A hand-held electric hedge trimmer

Abstract

The utility model provides a kind of handheld electric hedge trimmer, belong to horticultural tool technical field, it solves the existing heavy hedge trimmer, high use cost and cannot handheld efficient and fast pruning work etc. Including transmission case mechanism and cutting mechanism, transmission case mechanism inside is equipped with transmission mechanism, transmission case mechanism upper end is equipped with driving handle mechanism, driving handle mechanism is connected with transmission mechanism, the end of cutting mechanism is slidably arranged in transmission case mechanism interior, the end of cutting mechanism is connected with transmission mechanism, driving handle mechanism is connected with external mobile battery. The utility model can prevent debris from entering the interior of the hedge trimmer, protect the stable operation of the interior mechanism of the hedge trimmer, allow the hedge trimmer to be handheld for multi-angle cutting and pruning, be flexible and convenient, allow reciprocating shearing motion, efficiently and quickly prune shrubs, have low use cost, the overall structure of the hedge trimmer is light and portable, and efficient and fast pruning work can be easily performed.

Description

Technical Field

[0001] This utility model belongs to the field of gardening tools technology, and relates to an electric hedge trimmer, particularly a handheld electric hedge trimmer. Background Technology

[0002] Hedge trimmers are professional pruning tools for landscaping. Compared to chainsaws, they are more effective at pruning plants and shrubs. The advent of hedge trimmers has replaced traditional tools, improving the efficiency of gardeners' pruning work. Existing hedge trimmers are generally handheld or vehicle-mounted. Vehicle-mounted trimmers are typically used for pruning shrubs in spacious and tidy areas. Existing handheld hedge trimmers generally use gasoline engines, which consume a lot of gasoline, resulting in high operating costs. They are also relatively heavy and inconvenient to use, requiring significant manual labor and making it difficult to perform efficient and rapid pruning work.

[0003] Therefore, we propose a handheld electric hedge trimmer that prevents debris from entering the interior, protects the stable operation of the internal mechanism, allows for multi-angle cutting by hand, is flexible and convenient, and can perform reciprocating cutting motion to quickly trim shrubs, making it highly efficient and fast. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a handheld electric hedge trimmer. The technical problem to be solved by this utility model is: how to achieve fast and convenient multi-angle free trimming of shrubs using a handheld hedge trimmer.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A handheld electric hedge trimmer includes a transmission box mechanism and a cutting mechanism. The transmission box mechanism has a transmission mechanism inside and a drive handle mechanism at the upper end of the transmission box mechanism. The drive handle mechanism is connected to the transmission mechanism. The end of the cutting mechanism is slidably disposed inside the transmission box mechanism and is connected to the transmission mechanism. The drive handle mechanism is electrically connected to an external mobile battery.

[0007] The working principle of this utility model is as follows: When using this hedge trimmer to prune shrubs, the operator connects the external portable battery to the drive handle mechanism, then turns on the switch to start the hedge trimmer. The drive handle mechanism drives the transmission mechanism to move inside the transmission box mechanism, and the transmission mechanism drives the cutting mechanism to perform reciprocating shearing motion. The cutting mechanism cuts the shrubs. The operator controls the movement direction and cutting position of the entire device by holding the drive handle mechanism. The angle of the device can be flexibly adjusted according to the shape of the shrub and the pruning requirements, thereby achieving multi-angle rapid cutting. It is easy to operate and has a high degree of freedom. Moreover, by connecting an external portable battery, the hedge trimmer reduces the overall structural weight, making it more portable when held and facilitating efficient and rapid pruning work.

[0008] The transmission box mechanism includes an upper protective shell and a lower protective shell. The lower protective shell is detachably disposed below the upper protective shell. An installation cavity is formed between the upper and lower protective shells. A gasket is provided between the upper and lower protective shells. An installation plate is provided at the upper rear side of the upper protective shell. Limiting guide semi-rings are provided on the front side of both the upper and lower protective shells. The two limiting guide semi-rings form a limiting guide frame.

[0009] With the above structure, the upper and lower protective shells are used to protect the internal transmission structure, the gasket is used for dust prevention, the mounting plate is used to install the drive handle mechanism, and the limiting guide frame composed of two limiting guide semi-rings is used to guide and limit the cutting mechanism and seal the connection between the cutting mechanism and the transmission box mechanism to prevent cutting debris from entering the transmission box mechanism.

[0010] The drive handle mechanism includes a motor housing, which is fixed to the upper end of the mounting plate. A drive motor is fixed inside the motor housing. A handle is provided on the rear side of the motor housing, and a control switch is provided on the handle. A power socket is provided on the rear side of the handle. In use, it is electrically connected to an external portable battery through the power socket.

[0011] With the above structure, when pruning shrubs, the worker inserts the plug of the external portable battery into the power socket to power the hedge trimmer, and then turns on the control switch to start the drive motor. The motor housing is used to install and protect the drive motor.

[0012] The transmission mechanism includes a transmission shaft, a rotating shaft, and two pressure plates symmetrically arranged vertically. The transmission shaft is rotatably mounted inside the rear side of the upper protective shell and is connected to the output shaft of the drive motor. A drive gear is fixed at the lower end of the transmission shaft. The rotating shaft is rotatably mounted between the upper and lower protective shells. A driven gear is fixed on the rotating shaft and meshes with the drive gear. Gear shafts are provided on both the upper and lower sides of the driven gear, and the distance from the axis of the upper gear shaft to the axis of the transmission shaft is less than the distance from the axis of the lower gear shaft to the axis of the transmission shaft. Transmission wheels are rotatably mounted on both gear shafts. The transmission wheels have a gourd-shaped structure and a connecting ring at the end of each transmission wheel. The two pressure plates are fixed on the upper and lower protective shells respectively, and the rotating shaft passes through the two pressure plates and the two gear shafts. The two pressure plates abut against the transmission wheels on the same side, and the front end of the pressure plates has a clearance groove.

[0013] With the above structure, the output shaft of the drive motor drives the transmission shaft to rotate, the transmission shaft drives the drive gear to rotate, the drive gear drives the driven gear and the rotating shaft to rotate inside the mounting cavity, the driven gear drives the two gear shafts to rotate, the gear shafts drive the corresponding transmission wheel components to move, the two transmission wheel components move alternately back and forth, the transmission wheel components rotate around the corresponding gear shafts, the transmission wheel components drive the corresponding connecting rings to move, the two connecting rings move alternately back and forth along the clearance groove of the pressure plate on the same side, the pressure plate is used to cooperate with the upper protective shell and the lower protective shell to limit the movement of the two transmission wheel components and prevent the transmission wheel components from moving out of order.

[0014] The cutting mechanism includes several equally spaced locking pins. Each locking pin has a fixed toothed cutter, a first fixing plate, two movable toothed cutters symmetrically arranged vertically, and a second fixing plate arranged vertically. The ends of the movable toothed cutters are rotatably disposed inside the connecting ring of the transmission wheel on the same side. The movable toothed cutters have several equally spaced sliding grooves. The number and size of the sliding grooves match the locking pins. The locking pins are slidably disposed inside the sliding grooves at corresponding positions of the two movable toothed cutters. The fixed toothed cutter and the first fixing plate are fixed to the lower front end of the upper protective shell, and the second fixing plate is fixed to the upper front end of the lower protective shell.

[0015] With the above structure, the two connecting rings drive the moving toothed cutters at corresponding positions to perform alternating reciprocating motion. When the moving toothed cutters move, they drive several sliding grooves on them to slide relative to the locking pins at corresponding positions. The two moving toothed cutters perform alternating reciprocating motion to cut the shrubs that enter the cutting teeth. Fixed plate two, fixed plate one and fixed toothed cutters are used to provide a support for the moving toothed cutters, and together with several locking pins, they form the track for the movement of the two moving toothed cutters. At the same time, several sliding grooves facilitate the reciprocating motion with the locking pins at corresponding positions.

[0016] The fixed tooth cutter includes a fixed tooth bar, the end of which is fixed to the lower front end of the upper protective shell. Several fixed teeth are fixed on both sides of the fixed tooth bar at equal intervals, and the fixed teeth on both sides are staggered.

[0017] The movable toothed cutter includes a movable toothed rod, which is slidably disposed between a fixed plate one and a fixed plate two. The end of the movable toothed rod is provided with a connecting shaft, which is rotatably disposed inside the connecting ring of the transmission wheel on the same side. Both sides of the movable toothed rod are provided with several equally spaced movable cutting teeth, and the movable cutting teeth on both sides are staggered.

[0018] With the above structure, several fixed cutting teeth are used to block cutting debris and prevent it from splashing upwards. The connecting ring drives the connecting shaft on the same side to move, the connecting shaft drives the moving toothed rod on the same side to move, and the moving toothed rod drives several moving cutting teeth on it to move. The two moving toothed rods move back and forth alternately, thereby driving several moving cutting teeth at corresponding positions to move back and forth alternately, thus cutting the shrub.

[0019] Compared with existing technologies, this handheld electric hedge trimmer has the following advantages:

[0020] 1. The transmission box mechanism protects the internal structure and prevents cutting debris from entering the transmission box mechanism, thus ensuring the stable operation of the internal mechanism.

[0021] 2. An external mobile battery is connected to the drive handle mechanism to power the hedge trimmer, reducing the overall structural weight and making it more portable when held. It also provides cutting power and controls the start and stop of cutting, making it easy to perform multi-angle cutting by hand, which is flexible and convenient.

[0022] 3. The drive handle mechanism drives the transmission mechanism to move inside the transmission box mechanism. The transmission mechanism drives the cutting mechanism to perform reciprocating shearing motion. The cutting mechanism reciprocates to cut the shrubs, thereby achieving shrub pruning. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a structural schematic diagram of some components in this utility model.

[0025] Figure 3 This is a partial cross-sectional schematic diagram of some components in this utility model.

[0026] Figure 4 This is a structural schematic diagram of the transmission box mechanism in this utility model.

[0027] Figure 5 This is a schematic diagram of the drive handle mechanism in this utility model.

[0028] Figure 6 This is a schematic diagram of the upper three-dimensional structure of the transmission mechanism in this utility model.

[0029] Figure 7This is a schematic diagram of the lower three-dimensional structure of the transmission mechanism in this utility model.

[0030] Figure 8 This is a schematic diagram of the cutting mechanism in this utility model.

[0031] Figure 9 This is an exploded structural diagram of the cutting mechanism in this utility model.

[0032] In the diagram: 1. Drive handle mechanism; 2. Transmission box mechanism; 3. Cutting mechanism; 4. Transmission mechanism; 5. Mounting plate; 6. Upper protective shell; 7. Lower protective shell; 8. Gasket; 9. Control switch; 10. Power socket; 11. Handle; 12. Motor housing; 13. Drive motor; 14. Transmission shaft; 15. Drive gear; 16. Driven gear; 17. Transmission wheel; 18. Pressure plate; 19. Connecting ring; 20. Rotating shaft; 21. Gear shaft; 22. Connecting shaft; 23. Sliding groove; 24. Fixing plate one; 25. Moving gear cutter; 26. Locking pin; 27. Fixed gear cutter; 28. Fixed gear; 29. ​​Fixing plate two. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figures 1-9 As shown, this handheld electric hedge trimmer includes a transmission box mechanism 2 and a cutting mechanism 3. The transmission box mechanism 2 is equipped with a transmission mechanism 4 inside. The upper end of the transmission box mechanism 2 is equipped with a drive handle mechanism 1, which is connected to the transmission mechanism 4. The end of the cutting mechanism 3 is slidably disposed inside the transmission box mechanism 2 and is connected to the transmission mechanism 4. The drive handle mechanism 1 is electrically connected to an external mobile battery.

[0035] In this embodiment, when using this hedge trimmer to prune shrubs, the operator connects the external portable battery to the drive handle mechanism 1, then turns on the switch to start the hedge trimmer. The drive handle mechanism 1 drives the transmission mechanism 4 to move inside the transmission box mechanism 2. The transmission mechanism 4 drives the cutting mechanism 3 to perform reciprocating shearing motion. The cutting mechanism 3 moves to cut the shrubs. The operator controls the movement direction and cutting position of the entire device by holding the drive handle mechanism 1. The angle of the device can be flexibly adjusted according to the shape of the shrub and the pruning requirements, thereby achieving multi-angle rapid cutting. The operation is simple and highly flexible. Moreover, by connecting an external portable battery, the hedge trimmer reduces the overall structural weight, making it more portable when held and facilitating efficient and rapid pruning work.

[0036] The transmission box mechanism 2 includes an upper protective shell 6 and a lower protective shell 7. The lower protective shell 7 is detachably disposed below the upper protective shell 6. An installation cavity is formed between the upper protective shell 6 and the lower protective shell 7. A gasket 8 is provided between the upper protective shell 6 and the lower protective shell 7. An installation plate 5 is provided at the upper rear side of the upper protective shell 6. A limiting guide semi-ring is provided on the front side of both the upper protective shell 6 and the lower protective shell 7. The two limiting guide semi-rings form a limiting guide frame.

[0037] In this embodiment, the upper protective shell 6 and the lower protective shell 7 are used to protect the internal transmission structure, the gasket 8 is used for dust prevention, the mounting plate 5 is used to install the drive handle mechanism 1, and the limiting guide frame composed of two limiting guide semi-rings is used to guide and limit the cutting mechanism 3 and seal the connection between the cutting mechanism 3 and the transmission box mechanism 2 to prevent cutting debris from entering the transmission box mechanism 2.

[0038] The drive handle mechanism 1 includes a motor housing 12, which is fixed to the upper end of the mounting plate 5. A drive motor 13 is fixed inside the motor housing 12. A handle 11 is provided on the rear side of the motor housing 12. A control switch 9 is provided on the handle 11. A power socket 10 is provided on the rear side of the handle 11. In use, it is electrically connected to an external mobile battery through the power socket 10.

[0039] In this embodiment, when pruning shrubs, the worker inserts the plug of the external portable battery into the power socket 10 to power the hedge trimmer, and then turns on the control switch 9 to start the drive motor 13. The motor housing 12 is used to install and protect the drive motor 13.

[0040] The transmission mechanism 4 includes a transmission shaft 14, a rotating shaft 20, and two pressure plates 18 arranged symmetrically on the upper and lower sides. The transmission shaft 14 is rotatably mounted inside the rear side of the upper protective shell 6, and is connected to the output shaft of the drive motor 13. A drive gear 15 is fixed to the lower end of the transmission shaft 14. The rotating shaft 20 is rotatably mounted between the upper protective shell 6 and the lower protective shell 7. A driven gear 16 is fixed on the rotating shaft 20, and the driven gear 16 meshes with the drive gear 15. Gear shafts 21 are provided on both the upper and lower sides of the driven gear 16, with the upper gear shaft 21 being the larger one. The distance from the axis of 1 to the axis of the transmission shaft 14 is less than the distance from the axis of the lower gear shaft 21 to the axis of the transmission shaft 14. Both gear shafts 21 are equipped with rotatable transmission wheel components 17. The transmission wheel component 17 has a gourd-shaped structure. The end of the transmission wheel component 17 is provided with a connecting ring 19. Two pressure plates 18 are fixed on the upper protective shell 6 and the lower protective shell 7 respectively. The rotating shaft 20 passes through the two pressure plates 18 and the two gear shafts 21. The two pressure plates 18 abut against the transmission wheel component 17 on the same side respectively. The front end of the pressure plate 18 is provided with an avoidance groove.

[0041] In this embodiment, the output shaft of the drive motor 13 drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the drive gear 15 to rotate, the drive gear 15 drives the driven gear 16 and the rotating shaft 20 to rotate inside the mounting cavity, the driven gear 16 drives the two gear shafts 21 to rotate, the gear shafts 21 drive the corresponding transmission wheel 17 to move, the two transmission wheel 17 move alternately back and forth, the transmission wheel 17 rotates around the corresponding gear shaft 21, the transmission wheel 17 drives the corresponding connecting ring 19 to move, the two connecting rings 19 move alternately back and forth along the clearance groove of the pressure plate 18 on the same side, the pressure plate 18 is used to cooperate with the upper protective shell 6 and the lower protective shell 7 to limit the movement of the two transmission wheel 17 and prevent the transmission wheel 17 from moving out of order.

[0042] The cutting mechanism 3 includes several equally spaced locking pins 26. From top to bottom, the locking pins 26 are provided with a fixed toothed cutter 27, a first fixing plate 24, two movable toothed cutters 25 symmetrically arranged at upper and lower positions, and a second fixing plate 29. The ends of the movable toothed cutters 25 are rotatably disposed inside the connecting ring 19 of the transmission wheel 17 on the same side. The movable toothed cutters 25 are provided with several equally spaced sliding grooves 23. The number and size of the sliding grooves 23 match the locking pins 26. The locking pins 26 are slidably disposed inside the sliding grooves 23 at the corresponding positions of the two movable toothed cutters 25. The fixed toothed cutter 27 and the first fixing plate 24 are fixed to the lower front side of the upper protective shell 6, and the second fixing plate 29 is fixed to the upper front side of the lower protective shell 7.

[0043] In this embodiment, the two connecting rings 19 drive the corresponding moving toothed cutter 25 to perform alternating reciprocating motion. When the moving toothed cutter 25 moves, it drives several sliding grooves 23 on it to slide relative to the corresponding locking pins 26. The two moving toothed cutters 25 perform alternating reciprocating motion to cut the shrubs that enter the cutting teeth. The second fixing plate 29, the first fixing plate 24 and the fixed toothed cutter 27 are used to provide a support for the moving toothed cutter 25, and together with several locking pins 26, they form the track for the movement of the two moving toothed cutters 25. At the same time, the several sliding grooves 23 facilitate the reciprocating motion with the corresponding locking pins 26.

[0044] The fixed tooth cutter 27 includes a fixed tooth bar, the end of which is fixed to the lower front end of the upper protective shell 6. Several equally spaced fixed cutting teeth 28 are fixed on both sides of the fixed tooth bar, and the fixed cutting teeth 28 on both sides are staggered.

[0045] The movable toothed cutter 25 includes a movable toothed rod, which is slidably disposed between the first fixed plate 24 and the second fixed plate 29. The end of the movable toothed rod is provided with a connecting shaft 22, which is rotatably disposed inside the connecting ring 19 of the transmission wheel 17 on the same side. Both sides of the movable toothed rod are provided with a number of equally spaced movable cutting teeth, and the movable cutting teeth on both sides are staggered.

[0046] In this embodiment, a number of fixed cutting teeth 28 are used to block cutting debris and prevent the debris from splashing upward. The connecting ring 19 drives the connecting shaft 22 on the same side to move. The connecting shaft 22 drives the moving toothed rod on the same side to move. The moving toothed rod drives a number of moving cutting teeth on it to move. The two moving toothed rods move back and forth alternately, thereby driving a number of moving cutting teeth at corresponding positions to move back and forth alternately, thereby cutting the shrub.

[0047] The working principle of this utility model is as follows: When using this hedge trimmer to prune shrubs, the operator inserts the plug of the external portable battery into the power socket 10 to power the hedge trimmer. Then, the control switch 9 is turned on, starting the drive motor 13. The output shaft of the drive motor 13 drives the transmission shaft 14 to rotate, which in turn drives the drive gear 15 to rotate. The drive gear 15 then drives the driven gear 16 and the rotating shaft 20 to rotate inside the mounting cavity. The driven gear 16 drives two gear shafts 21 to rotate, which in turn drives the corresponding transmission wheels 17 to move. 17. The transmission wheel 17 rotates around the gear shaft 21 at the corresponding position, driving the connecting ring 19 at the corresponding position to move. The two connecting rings 19 alternately reciprocate along the clearance groove of the pressure plate 18 on the same side. The pressure plate 18 is used to limit the movement of the two transmission wheels 17 in conjunction with the upper protective shell 6 and the lower protective shell 7 to prevent the transmission wheels 17 from moving out of order. The two connecting rings 19 drive the connecting shaft 22 at the corresponding position to move. The two connecting shafts 22 drive the moving tooth cutter 25 at the corresponding position to alternately reciprocate. When the moving tooth cutter 25 moves, it drives the tooth cutter on its... Several sliding grooves 23 slide relative to the corresponding locking pins 26, and two moving toothed cutters 25 reciprocate alternately. That is, the connecting ring 19 drives the connecting shaft 22 on the same side to move, the connecting shaft 22 drives the moving toothed rod on the same side to move, and the moving toothed rod drives several moving cutting teeth on it to move. The two moving toothed rods reciprocate alternately, thereby driving several moving cutting teeth at corresponding positions to reciprocate alternately, thereby cutting the shrubs and cutting the shrubs that have entered the fixed cutting teeth. The fixing plate 29, fixing plate 24, and fixed toothed cutter 27 are used to provide a support for the moving toothed cutter 25 and cooperate with it. Several locking pins 26 form the track for the movement of two moving toothed blades 25, while several sliding grooves 23 facilitate the reciprocating movement of the corresponding locking pins 26. The operator controls the movement direction and cutting position of the entire device by holding the drive handle mechanism 1. The angle of the device can be flexibly adjusted according to the shape of the shrub and the pruning requirements, thereby achieving multi-angle rapid cutting. It is easy to operate and has a high degree of freedom. In addition, the hedge trimmer reduces the overall structural weight by connecting an external mobile battery, making it lighter when held and facilitating efficient and rapid pruning work.

[0048] In summary, the transmission box mechanism 2 protects the internal structure and prevents cutting debris from entering the transmission box mechanism 2, thus ensuring the stable operation of the internal mechanism.

[0049] The external mobile battery is connected to the drive handle mechanism 1 to power the hedge trimmer, reducing the overall structural weight and making it more portable when held. It also provides cutting power and controls the start and stop of cutting, making it easy to perform multi-angle cutting by hand, which is flexible and convenient.

[0050] The drive handle mechanism 1 drives the transmission mechanism 4 to move inside the transmission box mechanism 2. The transmission mechanism 4 drives the cutting mechanism 3 to perform reciprocating shearing motion. The cutting mechanism 3 reciprocates to cut the shrub, thereby achieving shrub pruning.

[0051] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A handheld electric hedge trimmer, comprising a transmission mechanism (2) and a cutting mechanism (3), characterized in that, The transmission box mechanism (2) is equipped with a transmission mechanism (4) inside. The transmission box mechanism (2) is equipped with a drive handle mechanism (1) at the upper end. The drive handle mechanism (1) is connected to the transmission mechanism (4). The end of the cutting mechanism (3) is slidably disposed inside the transmission box mechanism (2). The end of the cutting mechanism (3) is connected to the transmission mechanism (4). The drive handle mechanism (1) is electrically connected to an external mobile battery. The transmission box mechanism (2) includes an upper protective shell (6) and a lower protective shell (7). The lower protective shell (7) is detachably disposed below the upper protective shell (6). An installation cavity is formed between the upper protective shell (6) and the lower protective shell (7). 7) A gasket (8) is provided between them. An installation plate (5) is provided on the upper rear side of the upper protective shell (6). A limiting guide half ring is provided on the front side of both the upper protective shell (6) and the lower protective shell (7). The two limiting guide half rings form a limiting guide frame. The drive handle mechanism (1) includes a motor housing (12). The motor housing (12) is fixed on the upper end of the installation plate (5). A drive motor (13) is fixed inside the motor housing (12). A handle (11) is provided on the rear side of the motor housing (12). A control switch (9) is provided on the handle (11). A power socket (10) is provided on the rear side of the handle (11). When in use, it is electrically connected to an external mobile battery through the power socket (10).

2. The handheld electric hedge trimmer according to claim 1, characterized in that, The transmission mechanism (4) includes a transmission shaft (14), a rotating shaft (20), and two pressure plates (18) arranged symmetrically on the upper and lower sides. The transmission shaft (14) is rotatably disposed inside the rear side of the upper protective shell (6), and the transmission shaft (14) is connected to the output shaft of the drive motor (13). A drive gear (15) is fixed at the lower end of the transmission shaft (14). The rotating shaft (20) is rotatably disposed between the upper protective shell (6) and the lower protective shell (7). A driven gear (16) is fixed on the rotating shaft (20). The driven gear (16) meshes with the drive gear (15). Gear shafts (21) are provided on both the upper and lower sides of the driven gear (16), and the upper gear... The distance from the axis of shaft (21) to the axis of transmission shaft (14) is less than the distance from the axis of the lower gear shaft (21) to the axis of transmission shaft (14). Both gear shafts (21) are provided with rotatable transmission wheel components (17). The transmission wheel component (17) has a gourd-shaped structure. The end of the transmission wheel component (17) is provided with a connecting ring (19). Two pressure plates (18) are fixed on the upper protective shell (6) and the lower protective shell (7) respectively. The rotating shaft (20) passes through the two pressure plates (18) and the two gear shafts (21). The two pressure plates (18) abut against the transmission wheel component (17) on the same side respectively. The front end of the pressure plate (18) is provided with a clearance groove.

3. A handheld electric hedge trimmer according to claim 2, characterized in that, The cutting mechanism (3) includes several equally spaced locking pins (26). The locking pins (26) are provided with a fixed toothed cutter (27), a first fixing plate (24), two moving toothed cutters (25) and a second fixing plate (29) arranged symmetrically at the top and bottom. The ends of the moving toothed cutters (25) are rotatably disposed inside the connecting ring (19) of the transmission wheel (17) on the same side. The moving toothed cutters (25) are provided with several equally spaced sliding grooves (23). The number and size of the sliding grooves (23) match the locking pins (26). The locking pins (26) are all slidably disposed inside the sliding grooves (23) at the corresponding positions of the two moving toothed cutters (25). The fixed toothed cutter (27) and the first fixing plate (24) are fixed to the lower front side of the upper protective shell (6), and the second fixing plate (29) is fixed to the upper front side of the lower protective shell (7).

4. A handheld electric hedge trimmer according to claim 3, characterized in that, The fixed tooth cutter (27) includes a fixed tooth bar, the end of which is fixed to the lower front side of the upper protective shell (6). Several equally spaced fixed cutting teeth (28) are fixed on both sides of the fixed tooth bar, and the fixed cutting teeth (28) on both sides are staggered. The moving tooth cutter (25) includes a moving tooth rod, which is slidably disposed between the first fixed plate (24) and the second fixed plate (29). The end of the moving tooth rod is provided with a connecting shaft (22), which is rotatably disposed inside the connecting ring (19) of the transmission wheel (17) on the same side. Both sides of the moving tooth rod are provided with several equally spaced moving cutting teeth, and the moving cutting teeth on both sides are staggered.

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