Lithium battery hedge trimmer capable of rapidly replacing blade

Abstract

The utility model belongs to the field of hedge trimmers, and particularly relates to a lithium battery hedge trimmer capable of quickly replacing a blade, which comprises a body and a quick release component, the quick release assembly is provided with a shell, a fixed bin is fixedly installed in an inner cavity of the shell, a torque motor is fixedly installed at the bottom of the fixed bin, a first transmission wheel is fixedly installed at the output end of the torque motor, a transmission belt is in transmission connection with the periphery of the first transmission wheel, and a second transmission wheel is in transmission connection with the other side of the transmission belt. A linkage arm is hinged to the top of the second transmission wheel; a self-locking motor is driven to enable a threaded shaft to rotate, the threaded shaft is matched with a threaded sleeve to enable a movable plate to perform relative horizontal movement, clamping of clamping strips on the two sides in clamping grooves is canceled, a body is detached from a quick detaching assembly under the condition that a clamping plate is not limited, and the mounting and detaching functions are achieved; the problem that the replacement of the blade is often tedious is solved, and the adaptability in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of hedge trimmers, in particular to a lithium-powered hedge trimmer with rapidly replaceable blades. Background Art

[0002] Hedge trimmers, also known as hedge shears, are suitable for professional pruning in landscaping such as tea pruning, parks, gardens, and roadside hedges. According to the type of power unit, they can be divided into gasoline and electric types. Electric types are more environmentally friendly and quieter, and are therefore very popular among users.

[0003] Chinese patent number CN202223483357.9 discloses a lithium-ion hedge trimmer, comprising an operating handle assembly, a motor, a motor cover, a motor bottom shell, a reduction gear, a controller, a handle assembly and a tool assembly; the motor bottom shell is provided with a motor support body, the motor is assembled on the motor support body, and the stator of the motor and the motor support body divide the space between the motor cover and the motor bottom shell into two parts that are not connected to each other; a plurality of first air inlet holes are provided on the inner side of the motor support body, and a plurality of second air inlet holes are provided on the outer side; an air outlet is provided on the side wall of the motor support body facing the controller; and a cooling fan is installed under the motor.

[0004] As can be seen from the above, when the motor is operating, it drives the cooling fan to rotate at high speed, causing the blades to rotate, and air is blown out under the action of centrifugal force, forming an airflow. The air entering through the first air inlet is blown by the blades on the bottom surface of the cooling fan rotary disc and flows through the air outlet to the cooling reduction box and controller. However, this solution still has the following shortcomings: when the hedge trimmer is in use, if the blade of the hedge trimmer accidentally trims a hard object, the blade will be damaged, which will affect the subsequent use. The existing hedge trimmer is often cumbersome to replace the blade, which increases the labor intensity of the personnel and affects the work efficiency.

[0005] Therefore, in order to solve the above problems, a lithium-ion hedge trimmer with a quick-replaceable blade is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the prior art, in which blade replacement is often cumbersome, the utility model provides a lithium-powered hedge trimmer with rapidly replaceable blades.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the lithium-powered hedge trimmer with quickly replaceable blades described in the present invention comprises a main body and a quick-release assembly; the quick-release assembly is installed with a shell, the inner cavity of the shell is fixedly installed with a fixed bin, the bottom of the fixed bin is fixedly installed with a torque motor, the output end of the torque motor is fixedly installed with a first transmission wheel, the four sides of the first transmission wheel are connected to a transmission belt, the other side of the transmission belt is connected to a second transmission wheel, the top of the second transmission wheel is hinged with a linkage arm, and the other end of the linkage arm is hinged with a connector.

[0008] Preferably, the main body is installed with a fixed plate, a plurality of limit plates are fixedly installed on one side of the fixed plate, a movable knife strip is movably installed between the fixed plate and the limit plate, a connecting head is movably installed on one side of the movable knife strip, and a locking tooth is fixedly installed on the bottom of the fixed plate.

[0009] Preferably, a mounting plate is fixedly mounted on one side of the shell, a self-locking motor is fixedly mounted on one side of the mounting plate, a threaded shaft is fixedly mounted on the output end of the self-locking motor, a threaded shaft passes through and is threadedly connected to a threaded sleeve, and a movable plate is fixedly mounted around the threaded sleeve.

[0010] Preferably, four limiting rods are fixedly installed around the four sides of the mounting plate, and one end of the four limiting rods passes through and is movably mounted with a movable plate.

[0011] Preferably, a clamping plate is fixedly installed on one side of the fixed plate, the clamping plate is provided with two positioning slots, and is movably connected to a limiting rod through the positioning slots, and the clamping plate is clamped with two clamping strips through the clamping slots.

[0012] Preferably, a mounting plate is fixedly mounted on one side of the clamping strip, and a movable plate is fixedly mounted on one side of the other clamping strip.

[0013] The utility model is beneficial in that:

[0014] The utility model adopts the structural design of the quick-release assembly to drive the self-locking motor to rotate the threaded shaft, and the threaded shaft cooperates with the threaded sleeve to make the movable plate move horizontally relative to each other, and the clamping strips on both sides are unclamped in the clamping groove. When the clamping plate is not restricted, the main body can be disassembled from the quick-release assembly, thereby realizing the functions of installation and removal, solving the problem that the replacement of the knife strip is often complicated, and improving the adaptability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is an exploded schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the quick-release assembly structure of the utility model;

[0019] Figure 4 For the utility model Figure 3 A schematic diagram of the structure at center A;

[0020] Figure 5 It is an exploded schematic diagram of the main body structure of the utility model.

[0021] In the figure: 1. Main body; 2. Quick-release assembly; 11. Fixed plate; 12. Limiting plate; 13. Movable blade; 14. Gear; 21. Housing; 22. Fixed compartment; 23. Torque motor; 24. First transmission wheel; 25. Transmission belt; 26. Second transmission wheel; 27. Linkage arm; 28. Connector; 29. Mounting plate; 31. Self-locking motor; 32. Threaded shaft; 33. Limiting rod; 34. Threaded sleeve; 35. Clip; 36. Snap-in plate; 37. Snap-in groove; 38. Positioning groove; 39. Movable plate. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5As shown, a lithium-powered hedge trimmer with quickly replaceable blades includes a body 1 and a quick-release assembly 2. The quick-release assembly 2 is equipped with a housing 21. A fixed compartment 22 is fixedly installed in the inner cavity of the housing 21. A torque motor 23 is fixedly installed at the bottom of the fixed compartment 22. A first transmission wheel 24 is fixedly installed at the output end of the torque motor 23. A transmission belt 25 is connected to the periphery of the first transmission wheel 24. The other side of the transmission belt 25 is connected to the second transmission wheel 26. A linkage arm 27 is hinged to the top of the second transmission wheel 26, and a connector 28 is hinged to the other end of the linkage arm 27.

[0024] During operation, the torque motor 23 provides power, and in cooperation with each other, the second transmission wheel 26 is rotated. When the second transmission wheel 26 rotates, the linkage arm 27 is linked, which is conducive to driving the movable blade 13 to perform continuous reciprocating motion.

[0025] Furthermore, the body 1 is mounted with a fixed plate 11, a plurality of limit plates 12 are fixedly mounted on one side of the fixed plate 11, a movable blade 13 is movably mounted between the fixed plate 11 and the limit plates 12, a connector 28 is movably mounted on one side of the movable blade 13, and a latch 14 is fixedly mounted on the bottom of the fixed plate 11;

[0026] During operation, the movable blade 13 is limited by the installation of the limiting plate 12 through the fixed plate 11, while ensuring that it can move. When the linkage arm 27 is connected to one side of the movable blade 13 through the connecting head 28, the movable blade 13 is reciprocated to perform trimming work with the gap between the movable blade 13 and the locking teeth 14.

[0027] Furthermore, a mounting plate 29 is fixedly mounted on one side of the housing 21, a self-locking motor 31 is fixedly mounted on one side of the mounting plate 29, a threaded shaft 32 is fixedly mounted on the output end of the self-locking motor 31, a threaded sleeve 34 is threadedly connected to the threaded shaft 32, and a movable plate 39 is fixedly mounted around the threaded sleeve 34;

[0028] During operation, the self-locking motor 31 is installed so that when it stops working, it can be automatically locked to prevent it from being damaged or moved by external forces, which is beneficial to limiting the movement of the threaded shaft 32.

[0029] Furthermore, four limiting rods 33 are fixedly installed around the mounting plate 29, and one end of the four limiting rods 33 passes through and is movably mounted with a movable plate 39;

[0030] During operation, the cooperation between the threaded shaft 32 and the threaded sleeve 34 enables the movable plate 39 to move accordingly. In order to prevent the movable plate 39 from deviating during the activity, the installation of the limiting rod 33 is conducive to limiting the activity of the movable plate 39.

[0031] Furthermore, a clamping plate 36 is fixedly mounted on one side of the fixing plate 11. The clamping plate 36 has two positioning slots 38 formed therein and is movably connected to the limit rod 33 via the positioning slots 38. The clamping plate 36 is clamped with two clamping strips 35 via the clamping slots 37.

[0032] During operation, the positioning groove 38 is opened by the clamping plate 36 to facilitate the movable positioning of the clamping plate 36, thereby preventing the clamping groove 37 from being unable to dock with the clamping strip 35.

[0033] Furthermore, a mounting plate 29 is fixedly mounted on one side of the clamping strip 35, and a movable plate 39 is fixedly mounted on one side of the other clamping strip 35;

[0034] During operation, the movable plate 39 moves to drive the fixed clamping strip 35 on one side to move synchronously. When the movable plate 39 moves to a certain position, the clamping slot 37 is clamped by the two clamping strips 35 .

[0035] Working principle: The first transmission wheel 24 is rotated by driving the torque motor 23, and the transmission belt 25 on the first transmission wheel 24 transmits the second transmission wheel 26, so that the second transmission wheel 26 performs synchronous rotation. When the second transmission wheel 26 rotates, it drives the linkage arm 27 to perform relative movement. One end of the linkage arm 27 is connected to one side of the movable blade 13 through the connector 28. Under the limit of the fixed plate 11 and the limit plate 12, the movable blade 13 is reciprocated and cooperates with the latch 14 to perform the trimming operation. When the body 1 needs to be replaced, the self-locking motor is driven The machine 31 causes the threaded shaft 32 to rotate, and the threaded shaft 32 cooperates with the threaded sleeve 34 to convert the rotational movement of the threaded shaft 32 into linear movement of the threaded sleeve 34 and the movable plate 39. At this time, the clamping strips 35 on both sides are unclamped inside the clamping groove 37, and the main body 1 is disassembled on the quick-release assembly 2 without the clamping plate 36 being limited. Similarly, during installation, the positioning groove 38 on the clamping plate 36 is docked with the limiting rod 33, and the self-locking motor 31 is driven to make the clamping strip 35 move accordingly to clamp the clamping groove 37, so that the entire main body 1 is limited by clamping.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A lithium-ion hedge trimmer with a quick-change blade, characterized by: The invention comprises a main body (1) and a quick-release assembly (2); the quick-release assembly (2) is provided with a shell (21); a fixed chamber (22) is fixedly provided in the inner cavity of the shell (21); a torque motor (23) is fixedly provided at the bottom of the fixed chamber (22); a first transmission wheel (24) is fixedly provided at the output end of the torque motor (23); a transmission belt (25) is connected to the periphery of the first transmission wheel (24); the other side of the transmission belt (25) is connected to the second transmission wheel (26); a linkage arm (27) is hinged to the top of the second transmission wheel (26); and a connector (28) is hinged to the other end of the linkage arm (27).

2. The lithium-powered hedge trimmer with a quick-change blade according to claim 1, characterized in that: The body (1) is installed with a fixed plate (11), a plurality of limit plates (12) are fixedly installed on one side of the fixed plate (11), a movable blade (13) is movably installed between the fixed plate (11) and the limit plate (12), a connector (28) is movably installed on one side of the movable blade (13), and a latching tooth (14) is fixedly installed on the bottom of the fixed plate (11).

3. The lithium-powered hedge trimmer with a quick-change blade according to claim 1, characterized in that: A mounting plate (29) is fixedly mounted on one side of the housing (21), a self-locking motor (31) is fixedly mounted on one side of the mounting plate (29), a threaded shaft (32) is fixedly mounted on the output end of the self-locking motor (31), the threaded shaft (32) passes through and is threadedly connected to a threaded sleeve (34), and movable plates (39) are fixedly mounted around the threaded sleeve (34).

4. The lithium-powered hedge trimmer with quickly replaceable blades according to claim 3, characterized in that: Four limiting rods (33) are fixedly installed around the mounting plate (29), and one end of the four limiting rods (33) passes through and is movably installed with a movable plate (39).

5. The lithium-powered hedge trimmer with a quick-change blade according to claim 2, characterized in that: A clamping plate (36) is fixedly mounted on one side of the fixing plate (11). The clamping plate (36) is provided with two positioning grooves (38) and is movably connected to a limiting rod (33) through the positioning grooves (38). The clamping plate (36) is clamped with two clamping strips (35) through the clamping grooves (37).

6. The lithium-powered hedge trimmer with quickly replaceable blades according to claim 5, characterized in that: A mounting plate (29) is fixedly mounted on one side of the clamping strip (35), and a movable plate (39) is fixedly mounted on one side of the other clamping strip (35).

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