Detachable power output device and handheld gardening tool

Abstract

The detachable power output device comprises a power head providing power output, a control handle and a connecting rod, the control handle is fixed to the connecting rod, one end of the connecting rod is detachably connected with the power head, the power head is provided with a first terminal part externally connected with communication control, and the first terminal part is provided with a second terminal part. The control handle is provided with a second terminal portion corresponding to the first terminal portion and a switch electrically connected with the second terminal portion, the second terminal portion is matched with the first terminal portion in a pluggable inserting mode, so that signal connection is formed between the control handle and the power head, a user can control the power head to operate through the switch, and the power head outputs power. And the first terminal part and the second terminal part can be separated, and then the power head is detached from the end part of the connecting rod, so that the control handle and the power head are completely separated, the packaging size is reduced, and the storage is more convenient.

Description

Technical Field

[0001] The utility model relates to a garden tool, in particular to a detachable power output device and a handheld garden tool. Background Art

[0002] Garden tools are equipment for maintaining green landscapes. They are mechanized or semi-mechanized tools that work on lawns, hedges, flowers, and trees, replacing most manual labor. Most garden tools are handheld garden tools, including lawn mowers, brush cutters, high-branch saws, hedge shears, etc. In order to facilitate the trimming of green plants that are higher or farther away, handheld garden tools are made longer and longer. Existing garden tools include front-powered garden tools and rear-powered garden tools. The rear-powered garden tools generally include a rear-mounted power head, a control handle, a connecting rod, and a working head. The working head is mounted on the front end of the connecting rod. The control handle is fixedly connected to the rear-mounted power head and mounted on the rear end of the connecting rod. The control handle controls the rear-mounted power head to start outputting power to drive the working head to work. The housing of the control handle and the housing of the rear-mounted power head can be integrally formed or fixed together by screws.

[0003] For example, Chinese invention patent CN103448037A discloses a rear-mounted power tool, which includes a power head providing a power source, a control handle, and an output rod connected to the power head. The power head includes a shell, in which a battery pack and a power drive device are arranged; one end of the output rod is connected to the power drive device to provide power, the other end of the output rod is connected to a connector, and the other end of the connector is connected to the working head. The control handle includes a grip and a handle body connected to one end of the grip, the rear end of the grip is integrally formed with the shell, the output rod is inserted into the grip and the handle body and connected to the power head, a power switch is provided on the handle body, and a self-locking switch and a main switch are provided on the grip.

[0004] For example, Chinese utility model patent CN204180548U discloses a handheld garden tool, which includes a housing power device, a handle control device, an upper tube, a lower rod, a connecting sleeve and a working head. The housing power device is installed at the upper end of the upper tube, the lower rod is connected to the upper tube, and the working head is installed at the lower end of the lower rod. The housing power device includes a right housing and a left housing, and the handle control device includes a right handle and a left handle. The right handle and the left handle on the handle control device are respectively assembled on the right housing and the left housing of the housing power device by screws.

[0005] As handheld garden tools are getting longer and longer, their storage and transportation have become extremely inconvenient. To solve this problem, a structure with a detachable connecting rod connecting the power head and the working head has appeared on the market, which can split the whole into a power head with a control handle, a connecting rod and a working head, and the disassembled connecting rod can be split into multiple rod sections, thereby reducing the overall length. However, the overall structure composed of the power head and the control handle after the split is still relatively large, and the existing rear-mounted power head and the control handle are connected as a whole. The power head and the control handle cannot be disassembled into two independent parts for storage or packaging, and cannot achieve good storage, preservation, and packaging and transportation effects. Utility Model Content

[0006] Since the rear-mounted power head and the control handle are an integrated whole and cannot be disassembled into two independent components, and thus cannot be well stored and packed for transportation, the utility model provides a detachable power output device and a handheld garden tool.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a detachable power output device, including a power head providing power output, a control handle and a connecting rod, the control handle is fixed on the connecting rod, one end of the connecting rod is detachably connected to the power head, the power head is provided with a first terminal part for external communication control, the control handle is provided with a second terminal part corresponding to the first terminal part and a switch electrically connected to the second terminal part, the second terminal part and the first terminal part are pluggable and matched to form a signal connection between the control handle and the power head.

[0008] A further preferred technical solution of the present invention is: a channel running through the front and back of the control handle is provided for the connecting rod to pass through, and the connecting rod passes through the channel and is detachably fixedly connected to the control handle.

[0009] A further preferred technical solution of the present utility model is: the power head includes a shell, a motor arranged in the shell for providing power, the first terminal part includes a socket opened on the shell, a terminal seat arranged in the socket, and a first terminal core arranged in the terminal seat for signal connection, the second terminal part includes a terminal connector, a second terminal core arranged in the terminal connector, the control handle is provided with a control line extending to the outside, the terminal connector is arranged on the wire end of the control line, and the terminal connector is inserted into the socket to make the first terminal core and the second terminal core electrically conductive.

[0010] A further preferred technical solution of the present invention is: 4-8 first terminal wire cores are provided in the terminal seat, and the same number of second terminal wire cores as the first terminal wire cores are provided in the terminal connector.

[0011] A further preferred technical solution of the present invention is that the control handle can slide relatively along the connecting rod to change the distance between the control handle and the power head, and a locking mechanism is provided on the control handle to lock the control handle and the connecting rod.

[0012] A further preferred technical solution of the present utility model is: the locking mechanism includes a locking seat, a first locking bolt and a first locking nut arranged on at least one side of the front and rear sides of the control handle, a locking hole opposite to the channel and for the connecting rod to pass through is provided on the locking seat, a first locking opening connected to the locking hole is provided on one side of the locking seat, and first locking parts connected to the first locking nut are provided on both sides of the first locking opening for the first locking bolt to pass through, and tightening the first locking bolt makes the locking hole smaller to clamp the connecting rod passing through.

[0013] A further preferred technical solution of the present invention is: the control handle is located at the front side of the power head, the first terminal portion is located at the front of the power head, and the second terminal portion is located at the rear of the control handle.

[0014] A further preferred technical solution of the present invention is: a control circuit board is provided in the housing, the motor is electrically connected to the control circuit board, and the first terminal core is electrically connected to the control circuit board via a signal control line.

[0015] A further preferred technical solution of the present utility model is: a connecting pipe for inserting the end of the connecting rod is fixed at the front end of the shell, a second locking opening is opened on the side wall of the connecting pipe, and second locking parts are provided on both sides of the second locking opening. The second locking bolt passes through the two second locking parts and is connected to the second locking nut. Tightening the second locking bolt makes the pipe opening of the connecting pipe smaller to clamp the inserted connecting rod end.

[0016] The handheld garden tool includes a detachable power output device, a transmission mechanism and a working head for operation. The working head is connected to the front end of a connecting rod, and the power head is connected to the rear end of the connecting rod. The transmission mechanism receives the power output by the power head and transmits it to the working head, so that the working head operates.

[0017] Compared with the prior art, the advantage of the present invention is that the control handle is fixed on the connecting rod, one end of the connecting rod is detachably connected to the power head, the power head is provided with a first terminal part for external communication control, the control handle is provided with a second terminal part corresponding to the first terminal part and a switch electrically connected to the second terminal part, the second terminal part and the first terminal part are pluggable and matched to form a signal connection between the control handle and the power head, the user can control the operation of the power head through the switch to make the power head output power, and by separating the first terminal part and the second terminal part and then removing the power head from the end of the connecting rod, the control handle and the power head can be completely disassembled, reducing the packaging size and making it easier to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0019] Figure 1 It is a schematic diagram of the overall structure of a handheld garden tool;

[0020] Figure 2 This is a disassembled diagram of the power head, connecting rod and control handle;

[0021] Figure 3 for Figure 2 A local enlarged view of point A;

[0022] Figure 4 It is a structural diagram of the power head;

[0023] Figure 5 It is a structural diagram of the control handle;

[0024] Figure 6 This is the top view of the power head and connecting rod;

[0025] Figure 7 This is a longitudinal cross-sectional diagram of the power head and connecting rod when they are separated.

[0026] In the figure: 1. power head; 2. second terminal part; 3. control line; 4. connecting pipe; 5. connecting rod; 6. control handle; 7. switch; 8. working head; 9. boss; 10. socket; 11. terminal seat; 12. terminal hole; 13. shell; 14. first terminal part; 15. second locking opening; 16. second locking part; 17. second locking bolt; 18. second locking nut; 19. handle body; 20. grip; 21. terminal connector; 22. locking seat; 23. locking hole; 24. first locking opening; 25. first locking part; 26. first locking nut; 27. first locking bolt; 28. motor; 29. control circuit board; 30. core shaft. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0029] Figure 1-Figure 7 As shown, the handheld garden tool includes a power head 1 that provides power output, a control handle 6, a connecting rod 5, a transmission mechanism, and a working head 8 for operation. The working head 8 is connected to the front end of the connecting rod 5, and the power head 1 is connected to the rear end of the connecting rod 5. The control handle 6 is fixed to the connecting rod 5 and is located in front of the power head 1. The control handle 6 is provided with a switch 7. The transmission mechanism connects the working head 8 and the power head 1. When the user holds the control handle 6 to operate the handheld garden tool, the switch 7 is triggered to start the power head 1 to output power. The transmission mechanism receives the power output of the power head 1 and transmits it to the working head 8, causing the working head 8 to operate. The front and rear ends here are considered to be the front when the handheld garden tool is close to the working area when operating, and the rear end when the user is holding or away from the working area. The direction shown in the figure is the front.

[0030] The working head 8 can be a mowing head, a saw head assembly, or a hedge trimmer cutting head. When the working head 8 is a mowing head, the handheld garden tool works as a mowing machine. When the working head 8 is a saw head assembly, the handheld garden tool works as a high-branch saw. When the working head 8 is a hedge trimmer cutting head, the handheld garden tool works as a hedge trimmer. This patent is not limited to the above-mentioned working heads 8. Other garden tool heads driven by the motor 28 are applicable to this patent.

[0031] Figure 6 、 Figure 7 As shown, in addition, the transmission mechanism can be a core shaft 30 or a flexible shaft arranged in the connecting rod 5, and the two ends of the core shaft 30 or the flexible shaft are respectively connected to the power head 1 and the working head 8, so that the power output by the power head 1 can be transmitted to the working head 8 through the core shaft 30 or the flexible shaft, so that the working head 8 moves to operate.

[0032] In addition, the connecting rod 5 can be formed by detachably connecting multiple sections of pipes, or can be an integrated pipe.

[0033] The rear end of the connecting rod 5 is detachably connected to the power head 1. The power head 1 is provided with a first terminal portion 14 for external communication control, and the control handle 6 is provided with a second terminal portion 2 corresponding to the first terminal portion 14. The switch 7 is electrically connected to the second terminal portion 2. The second terminal portion 2 and the first terminal portion 14 are pluggable and matched to form a signal connection between the control handle 6 and the power head 1. The user can operate the control handle 6, and the control signal emitted from the control handle 6 can be transmitted to the power head 1 through the connection between the second terminal portion 2 and the first terminal portion 14, thereby realizing control of the power head 1.

[0034] Figure 2As shown, and since the rear end of the connecting rod 5 is detachably connected to the power head 1, and the first terminal portion 14 and the second terminal portion 2 are pluggable, the second terminal portion 2 can be unplugged from the first terminal portion 14, and then the power head 1 can be removed from the rear end of the connecting rod 5, so that the power head 1 and the control handle 6 are completely separated into two independent parts, thereby achieving the effect of reducing the packaging size and making it easier to store the handheld garden tool.

[0035] Preferably, the first terminal portion 14 is provided at the front of the power head 1 , and the second terminal portion 2 is provided at the rear of the control handle 6 opposite to the power head 1 .

[0036] The power head 1 includes a shell 13 and a motor 28 arranged in the shell 13 for providing power. When the rear end of the connecting rod 5 is connected to the power head 1, the core shaft 30 or soft shaft in the connecting rod 5 is connected to the output shaft of the motor 28 to receive the power output by the output shaft of the motor 28.

[0037] Figure 3 、 Figure 4 As shown, the first terminal portion 14 includes a socket 10 provided on the shell 13, a terminal seat 11 provided in the socket 10, and a first terminal core for signal connection provided in the terminal seat 11. The socket 10 is located on the front side of the shell 13. A control circuit board 29 is also provided in the shell 13. The motor 28 is electrically connected to the control circuit board 29. The first terminal core is electrically connected to the control circuit board 29 through a signal control line. The control signal emitted from the control handle 6 is transmitted to the control circuit board 29 through the first terminal core. After receiving the signal, the control circuit board 29 controls the working state of the motor 28, such as start and stop or speed change.

[0038] In addition, the terminal seat 11 is arranged in the socket 10, and the terminal seat 11 is surrounded by the shell 13 of the power head 1, so that the terminal seat 11 is not easily damaged, and the built-in terminal makes the overall appearance of the power head 1 more simple and beautiful.

[0039] Figure 5 As shown, the second terminal portion 2 includes a terminal connector 21 and a second terminal wire core arranged in the terminal connector 21. The control handle 6 is provided with a control wire 3 extending to the outside. The control wire 3 extends from the rear of the control handle 6. The terminal connector 21 is arranged on the wire end of the control wire 3. The terminal connector 21 is inserted into the socket 10 to make the first terminal wire core and the second terminal wire core electrically conductive.

[0040] A plurality of terminal holes 12 are provided on the end face of the terminal seat 11, the first terminal wire core is arranged in the terminal hole 12, the terminal connector 21 is provided with a plug-in hole for inserting the terminal seat 11, and the second terminal wire core is arranged in the plug-in hole. When the terminal connector 21 is inserted into the socket 10, the terminal seat 11 is inserted into the plug-in hole, and at the same time, the second terminal wire core is inserted into the corresponding terminal hole 12 and electrically connected with the first terminal wire core in the terminal hole 12.

[0041] When the terminal fitting 21 is inserted into the socket 10 , the first terminal wire core and the second terminal wire core are electrically connected by contact, or the first terminal wire core and the second terminal wire core are electrically connected by plugging.

[0042] The terminal block 11 is provided with 4-8 first terminal cores, each of which is connected to a signal control line, which is connected to the control circuit board 29. The terminal connector 21 is provided with the same number of second terminal cores as the first terminal cores, and the first terminal cores and the second terminal cores are arranged in a one-to-one correspondence. The above-mentioned control line 3 is composed of the same number of signal control lines as the second terminal cores, and each second terminal core is connected to a signal control line. The above-mentioned switch 7 is electrically connected to the second terminal portion 2 through the signal control line. Preferably, the terminal block 11 is provided with 7 first terminal cores.

[0043] By setting 4-8 first terminal cores in the terminal seat 11 and setting the same number of second terminal cores as the first terminal cores in the terminal connector 21, different groups of first terminal cores and second terminal cores are electrically conductive and can transmit different control signals, so that the control handle 6 can control different functions of the power head 1, such as adjusting the gear, controlling the start and stop, or forward and reverse rotation and other functions, so that it is not limited to controlling the start and stop of the motor 28 only through the switch 7.

[0044] The detachable connection method between the power head 1 and the connecting rod 5 is the same as the connection method between the pipe body of the existing connecting rod 5 and the detachable connection method between the connecting rod 5 and the working head 8. Please refer to patent CN219165219U and patent CN103448037B.

[0045] As shown in the figure, the specific details are as follows: a connecting pipe 4 for inserting the end of the connecting rod 5 is fixed to the front end of the housing 13, a second locking opening 15 is opened on the side wall of the connecting pipe 4, and second locking parts 16 are provided on both sides of the second locking opening 15. A second locking bolt 17 passes through the two second locking parts 16 and is connected to the second locking nut 18. Tightening the second locking bolt 17 makes the pipe opening of the connecting pipe 4 smaller to clamp the inserted end of the connecting rod 5.

[0046] In addition, a limiting hole can be set on the rear end of the connecting rod 5, and a first threaded hole connected to the connecting pipe 4 is opened on the side wall of the connecting pipe 4. A limiting bolt is connected to the first threaded hole. When the rear end of the connecting rod 5 is inserted into the connecting pipe 4, the limiting bolt is rotated into the connecting pipe 4 so that the limiting bolt is inserted into the limiting hole to limit the connecting rod 5, so that the rear end of the connecting rod 5 is more firmly connected to the connecting pipe 4.

[0047] During disassembly, it is only necessary to unscrew the second locking bolt 17 and the limit bolt to pull the connecting rod 5 out of the connecting pipe 4, thereby completing the separation of the connecting rod 5 and the power head 1.

[0048] The socket 10 is provided on the upper side of the connecting tube 4 , and a boss 9 protruding toward the control handle 6 is provided at the front of the housing 13 . The boss 9 is located on the upper side of the connecting tube 4 , and the socket 10 is provided on the surface of the boss 9 .

[0049] The control handle 6 is provided with a channel running through the front and back for the connecting rod 5 to pass through. The connecting rod 5 passes through the channel and is detachably fixed to the control handle 6. The connecting rod 5 is detachably connected to the control handle 6, so that after the rear end of the connecting rod 5 is separated from the power head 1, the control handle 6 can be removed from the connecting rod 5, and the connecting rod 5, the control handle 6 and the power head 1 are separated into three independent parts, which is convenient for free assembly and reduces the packaging size, and is also convenient for storage.

[0050] The control handle 6 can slide relative to the connecting rod 5 to change the distance between the control handle 6 and the power head 1. A locking mechanism is provided on the control handle 6 to lock the control handle 6 and the connecting rod 5. The user can adjust the distance between the control handle 6 and the power head 1 according to his or her own habits and holding method, making it more applicable.

[0051] The exposed control wire 3 can be a spring wire or a longer wire to meet the adjustment of the distance between the control handle 6 and the power head 1.

[0052] Figure 5 As shown, the locking mechanism includes a locking seat 22, a first locking bolt 27 and a first locking nut 26 arranged on at least one side of the front and rear sides of the control handle 66. The locking seat 22 is provided with a locking hole 23 opposite to the channel and for the connecting rod 5 to pass through. One side of the locking seat 22 is provided with a first locking opening 24 connected to the locking hole 23. Both sides of the first locking opening 24 are provided with first locking parts 25 for the first locking bolt 27 to pass through and connected to the first locking nut 26. Rotating the first locking bolt 27 makes the locking hole 23 smaller to clamp the connecting rod 5 passing through, so that the control handle 6 and the connecting rod 5 are fixed. When the control handle 6 needs to be removed from the connecting rod 5, the first locking bolt 27 is unscrewed to enlarge the locking hole 23 to loosen the clamped connecting rod 5, so that the connecting rod 5 can be detached from the channel, and the control handle 6 is separated from the connecting rod 5.

[0053] The control handle 6 includes a grip 20 for hand holding and a handle body 19 connected to the front end of the grip 20. A channel runs through the grip 20 and the handle body 19. A locking seat 22 is provided on the rear side of the grip 20 and the front side of the handle body 19. The switch 7 is set on the grip 20.

[0054] The locking mechanism used to lock the control handle 6 and the connecting rod 5 is not limited to the one described above. Conventional structures that can lock the control handle 6 from sliding on the connecting rod 5 are also applicable to this patent. For example, the connecting rod 5 may be provided with a plurality of holes along its length, and a locking bolt may be provided on the control handle 6. The locking bolt may be screwed into one of the holes to lock the control handle 6 and the connecting rod 5. Another example is a locking bolt provided on the control handle 6. The inner end of the locking bolt may be screwed into the side wall of the connecting rod 5 to secure the control handle 6 to the connecting rod 5.

[0055] The power head 1 is connected to a power source for power supply. For example, a power interface is provided on the power head 1 for connecting to an external power source, or a battery pack insertion slot is provided on the power head 1 for inserting a battery pack, or a rechargeable battery is built into the shell 13, and a charging interface for charging the rechargeable battery is provided on the shell 13.

[0056] The above describes the detachable power take-off device and handheld garden tool provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is intended only to facilitate understanding of the present invention and its core concept. It should be noted that those skilled in the art may, without departing from the principles of the present invention, make various improvements and modifications to the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A detachable power output device, comprising a power head, a control handle and a connecting rod for providing power output, characterized in that: The control handle is fixed on the connecting rod, one end of the connecting rod is detachably connected to the power head, the power head is provided with a first terminal part for external communication control, the control handle is provided with a second terminal part corresponding to the first terminal part and a switch electrically connected to the second terminal part, the second terminal part and the first terminal part are pluggable and matched to form a signal connection between the control handle and the power head.

2. The detachable power take-off device according to claim 1, characterized in that: The control handle is provided with a channel which passes through the front and back for the connecting rod to pass through. The connecting rod passes through the channel and is detachably fixedly connected to the control handle.

3. The detachable power take-off device according to claim 1, characterized in that: The power head includes a shell and a motor arranged in the shell for providing power. The first terminal part includes a socket opened on the shell, a terminal seat arranged in the socket, and a first terminal core arranged in the terminal seat for signal connection. The second terminal part includes a terminal connector and a second terminal core arranged in the terminal connector. The control handle is provided with a control wire extending to the outside. The terminal connector is arranged on the wire end of the control wire. The terminal connector is inserted into the socket to make the first terminal core and the second terminal core electrically conductive.

4. The detachable power take-off device according to claim 3, characterized in that: The terminal seat is provided with 4-8 first terminal wire cores, and the terminal connector is provided with the same number of second terminal wire cores as the first terminal wire cores.

5. The detachable power take-off device according to claim 2, characterized in that: The control handle can slide relatively along the connecting rod to change the distance between the control handle and the power head. The control handle is provided with a locking mechanism to lock the control handle and the connecting rod.

6. The detachable power take-off device according to claim 5, characterized in that: The locking mechanism includes a locking seat, a first locking bolt and a first locking nut arranged on at least one side of the front and rear sides of the control handle. The locking seat is provided with a locking hole opposite to the channel and for the connecting rod to pass through. One side of the locking seat is provided with a first locking opening connected to the locking hole. Both sides of the first locking opening are provided with first locking parts connected to the first locking nut for the first locking bolt to pass through. Tightening the first locking bolt makes the locking hole smaller to clamp the connecting rod passing through.

7. The detachable power take-off device according to claim 1, characterized in that: The control handle is located at the front side of the power head, the first terminal portion is arranged at the front of the power head, and the second terminal portion is arranged at the rear of the control handle.

8. The detachable power take-off device according to claim 3, characterized in that: A control circuit board is provided in the housing, the motor is electrically connected to the control circuit board, and the first terminal wire core is electrically connected to the control circuit board via a signal control wire.

9. The detachable power take-off device according to claim 3, characterized in that: A connecting pipe for inserting the end of the connecting rod is fixed to the front end of the shell, and a second locking opening is opened on the side wall of the connecting pipe. Second locking parts are provided on both sides of the second locking opening. The second locking bolt passes through the two second locking parts and is connected to the second locking nut. Tightening the second locking bolt makes the pipe opening of the connecting pipe smaller to clamp the inserted connecting rod end.

10. Handheld garden tool, characterized in that, It comprises a detachable power output device, a transmission mechanism and a working head for operation as described in any one of claims 1 to 9, wherein the working head is connected to the front end of the connecting rod, the power head is connected to the rear end of the connecting rod, and the transmission mechanism receives the power output by the power head and transmits it to the working head, so that the working head operates.

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