CN117356281A - Pruning machine - Google Patents

Abstract

The present application discloses a pruning machine, which includes: a front-end device, which at least includes a cutting assembly extending along a longitudinal axis and a front housing that supports the cutting assembly; and a rear-end device, which at least includes a motor for driving the cutting assembly and a supporting motor. The rear shell; the connecting rod connects the front-end device and the rear-end device; the power supply device is supported by the rear shell and is used to provide electric energy to the motor; the rear-end device also includes a main handle for the user to hold, and the main handle is connected to a third A switch and a second switch, the second switch is arranged on the front side of the first switch; in the longitudinal axis direction, the distance between the first switch and the first cutting teeth of the cutting assembly is greater than or equal to 120 mm and less than or equal to 1000 mm. The above solution can provide a pruning machine with compact structure, easy operation and high safety performance.

Description

pruning machine

Technical field

The present application relates to a garden tool, specifically a pruning machine.

Background technique

As a garden tool, the pruner can be operated by the user to prune shrubs, hedges and other vegetation. A pruning machine usually includes a housing, a motor, a transmission device, and a cutting assembly. The cutting assembly includes a first blade and a second blade that can generate relative motion to achieve a cutting function. Most of the existing pruning machines that can be held by both hands do not have dual switches and have a low safety factor. The cutting height of pruning machines with dual switches is relatively low and cannot meet the cutting needs of users.

Contents of the invention

In order to solve the deficiencies of the existing technology, this application provides a pruning machine that is suitable for being held by both hands and is more portable and safer.

In order to achieve the above goals, this application adopts the following technical solutions:

A pruning machine, including: a front-end device, at least including a cutting assembly extending along a longitudinal axis and a front housing supporting the cutting assembly; a rear-end device, at least including a motor for driving the cutting assembly and supporting the The rear housing of the motor; a connecting rod connecting the front-end device and the rear-end device; a power supply device, supported by the rear housing, used to provide electrical energy to the motor; a main handle, connected to the main handle There is a first switch; a second switch, the second switch is arranged on the front side of the first switch; in the direction of the longitudinal axis, between the first switch and the first cutting tooth of the cutting assembly The distance is greater than or equal to 120mm and less than or equal to 1000mm.

Further, the rear housing further includes a receiving part and a combining part, the receiving part forms a first receiving space for accommodating the motor; the pruning machine further includes a power supply device, the power supply device is detachably Connected to the coupling portion, at least for powering the motor.

Further, the pruning machine further includes an auxiliary handle located on the front side of the main handle in the longitudinal axis direction; the auxiliary handle has a main grip part and at least two side grip parts for User holds.

Further, the pruning machine further includes a second switch installed on the auxiliary handle; the motor operates to drive the cutting assembly to work when the first switch and the second switch are operated simultaneously.

Further, in the longitudinal axis direction, the ratio of the distance from the first switch to the first cutting tooth and the distance from the second switch to the first cutting tooth is greater than or equal to 1 and less than or equal to 8.3 .

Further, the first switch is configured as a trigger, and the trigger is rotationally connected to the main handle; the second switch part is located in the third accommodation space formed by the auxiliary handle and is formed with the auxiliary handle. Sliding connection.

Further, the second switch extends generally along the inner side of the auxiliary handle and is arranged opposite to the main grip part and the side grip part of the auxiliary handle.

Further, the pruning machine further includes a circuit board assembly, the circuit board assembly is disposed in the first accommodation space; the first switch and the second switch are connected to the circuit board assembly.

Further, the communication between the circuit board assembly and the second switch may be configured as wired communication or wireless communication.

Further, the pruning machine further includes a control interface for being operated by a user to control the state of the pruning machine. The control interface is provided on the upper surface of the rear housing; the control interface at least includes a A speed regulating switch for controlling the rotation speed of the motor and a display interface for displaying the status of the power supply device.

Further, the pruning machine further includes a first transmission device and a second transmission device; the first transmission device is located in the rear housing, and the second transmission device is located in the front housing; the transmission shaft The first transmission device and the second transmission device are connected for transmitting power between the first transmission device and the second transmission device.

Further, the cutting assembly includes a first blade and a second blade and a blade bracket for supporting the first blade and the second blade, the blade bracket extending along the longitudinal axial direction; the blade The bracket is made of a mix of carbon fiber and fiberglass materials.

Description of the drawings

Figure 1 is a perspective view of a pruning machine as a specific embodiment;

Figure 2 is a perspective view of the pruning machine in Figure 1 after the rear housing is disassembled;

Figure 3 is a partial perspective view of the pruning machine in Figure 1 after the front housing is disassembled;

Figure 4 is an exploded view of the first transmission device located in the front housing;

Figure 5 is a perspective view of the connecting rod assembly;

Figure 6 is a perspective view of the connecting rod assembly in Figure 5 from another perspective;

Figure 7 is a perspective view of another embodiment of a cutting assembly suitable for the pruning machine of Figure 1;

Figure 8 is a partial exploded view of the cutting assembly in Figure 7;

Figure 9 is a perspective view of the pruning machine in Figure 1 from another perspective;

Figure 10 is a perspective view of the pruning machine in Figure 1 from another perspective;

Figure 11 is a perspective view of the positional relationship between the auxiliary handle and the front housing;

Figure 12 is a perspective view of the auxiliary handle, connecting rod and front housing in Figure 1;

Fig. 13 is a perspective view of the auxiliary handle in Fig. 12 after being disassembled.

Detailed ways

The present application will be specifically introduced below with reference to the accompanying drawings and specific embodiments.

The pruning machine 100 shown in FIG. 1 as a specific embodiment is used for users to operate to cut various shrubs, hedges and other vegetation. In order to facilitate the explanation of the technical solution of the present application, the directions shown by the arrows in Figure 1 are defined as: up, down, left, right, front and back.

One of ordinary skill in the art will understand that relative terms (e.g., “about,” “approximately,” “substantially,” etc.) used in connection with a quantity or condition are inclusive of the stated value and have the meaning indicated by the context (e.g., the term Including at least the degree of error associated with the measurement of a specific value, the tolerances associated with the specific value (e.g. manufacturing, assembly, use, etc.). Such terms should also be considered to disclose a range defined by the absolute values of both endpoints. Relative terms may refer to plus or minus a certain percentage (eg, 1%, 5%, 10% or more) of the indicated value. Of course, numerical values not expressed in relative terms should be disclosed as specific values subject to tolerances.

As shown in FIGS. 1 to 4 , the pruning machine 100 includes a front-end device 1 , a rear-end device 2 and a connecting rod assembly 3 . The front-end device 1 includes a cutting assembly 70 for outputting power and a front housing 20 that supports the cutting assembly 70 . The rear end device 2 includes a motor 30 for driving the cutting assembly 70 and a rear housing 10 that supports the motor 30 . The connecting rod assembly 3 connects the front end device 1 and the rear end device 2 . Specifically, the connecting rod assembly 3 includes a connecting rod 60 extending along the first axis 102 direction. The pruning machine 100 also includes a power supply device 40 and a transmission assembly 50 . The transmission assembly 50 is used to transmit power between the motor 30 and the cutting assembly 70 . The power supply device 40 is used to provide electric energy to the motor 30 . In this embodiment, the power supply device 40 may be a DC power supply, such as a battery pack. Of course, the power supply device 40 can also be configured as alternating current, such as commercial power.

Specifically, the rear housing 10 includes a receiving portion 11 for forming a first receiving space 111 , a main handle 13 for the user to hold, and a coupling portion 12 for connecting the power supply device 40 . The motor 30 and part of the transmission assembly 50 are disposed in the first accommodation space 111 formed by the accommodation portion 11 . The front housing 20 is disposed on the front side of the rear housing 10 and forms a second accommodation space (not shown in the figure) for accommodating part of the transmission assembly 50 and part of the cutting assembly 70 . Therein, the cutting assembly 70 extends along the longitudinal axis 101 . In this embodiment, the front housing 20 and the rear housing 10 are located at both ends of the connecting rod 60 for supporting the connecting rod 60 . In some embodiments, the main handle 13 is provided as a separate structure from the rear housing 10 . For example, the main handle 13 is independently sleeved on the connecting rod assembly 13 , that is, the main handle 13 is independently sleeved on the connecting rod 60 . In some embodiments, the connecting rod 60 is directly formed with a grip portion for the user to hold, thereby replacing the main handle 13 . It can be understood that the main handle 13 for the user to hold is not provided separately, but the original structure is improved to form a holding portion.

The motor 30 is disposed in the first accommodation space 111 , located on the rear side of the main handle 13 and on the upper side of the coupling part 12 . When the power supply device 40 is connected to the coupling part 12, in a plane perpendicular to the up and down direction, the projection of the motor 30 on the above plane overlaps with the projection of the power supply device 40 on the above plane. Specifically, the motor 30 includes a motor shaft 31 that rotates about a motor axis 301 . In this embodiment, the motor 30 is configured as a motor. In this way, a reasonable arrangement of the position of the motor 30 can improve the balance of the whole pruning machine 100 and improve the user experience. Of course, the motor 30 can also be disposed at other locations, such as the front side of the main handle 13 or in the second accommodation space.

The power supply device 40 is detachably connected to the combination part 12 for powering the motor 30 . Specifically, the coupling portion 12 is located on the rear side of the main handle 13 in the front-rear direction. In some embodiments, the power supply device 40 is detachably connected to the coupling part 12 along the first direction to power the motor 30 . Wherein, the first direction is parallel to the longitudinal axis 101 direction. In some embodiments, the power supply device 40 is detachably connected to the coupling part 12 along the second direction to power the motor 30 . The second direction intersects the direction of the longitudinal axis 101 . In some embodiments, the power supply device 40 is detachably connected to the coupling part 12 along the third direction to power the motor 30 . The third direction intersects obliquely with the direction of the longitudinal axis 101 . Of course, when the power supply device 40 is detachably connected to the coupling portion 12 along the third direction, the coupling portion 12 on the rear housing 10 needs to be appropriately changed, but this does not affect the position of, for example, the motor 30 in the rear housing 10 . It should be understood that in some embodiments, the cutting angle of the cutting assembly 70 is adjustable, and the above-mentioned longitudinal axis 101 should be understood as the longitudinal axis produced when the cutting assembly 70 is adjusted to a state parallel or substantially parallel to the connecting rod 60 Axis 101.

In some embodiments, the power supply device 40 includes a battery pack, and the rated output voltage of the battery pack is greater than or equal to 18V. Specifically, the rated output voltage of the battery pack is set to 56V. In other embodiments, the power supply device 40 includes two or more battery packs. The battery pack may specifically be a lithium battery pack, including a plurality of electrically connected battery cells. The number of battery cells determines the nominal voltage and power supply capacity of the battery pack. In this application, the insertion direction of the power supply device 40 and the number of battery packs are not limited. In other embodiments, the power supply device 40 may also be configured as a battery pack built into the rear housing 10 .

As shown in FIG. 2 , the pruning machine 100 also includes: a circuit board assembly 81 , a heat dissipation plate 82 and a fan 83 . The circuit board assembly 81 is electrically connected to the motor 30 , the heat sink 82 is used to dissipate heat to the circuit board assembly 81 , and the fan 83 is used to generate heat dissipation airflow. The circuit board assembly 81 , the heat dissipation plate 82 and the fan 83 are all arranged in the first accommodation space 111 . The rear housing 10 is also formed with an airflow inlet 841 and an airflow outlet 842 that communicate with the inside and outside of the rear housing 10. When the fan 83 rotates, it can generate a cooling airflow that enters the rear housing 10 from the airflow inlet 841 and flows through the motor 30, thereby affecting the motor 30. To dissipate heat.

The transmission assembly 50 is used to transmit power between the motor 30 and the cutting assembly 70 . In this embodiment, the transmission assembly 50 includes a first transmission device 51 and a second transmission device 52 as well as a transmission shaft 53 . The first transmission device 51 is connected to the motor 30 and is disposed in the first accommodation space 111 formed by the rear housing 10 . The second transmission device 52 is disposed in the second accommodation space formed by the front housing 20 . The transmission shaft 53 extends along the direction of the first axis 102 and is used for transmitting power between the first transmission device 51 and the second transmission device 52 . The front housing 20 can also be understood as the box body of the second transmission device 52 .

Specifically, the first transmission device 51 includes first transmission teeth 511 and second transmission teeth 512 . The first transmission tooth 511 is connected to the motor shaft 31 of the motor 30 and is driven by the motor shaft 31 to rotate around the motor axis 301 . The second transmission teeth 512 are driven by the first transmission teeth 511 to rotate around the first axis 102 . The motor axis 301 is parallel to the first axis 102 . In this embodiment, the first transmission teeth 511 and the second transmission teeth 512 are configured as helical gears. In this way, when the pruning machine 100 is running, the noise of the first transmission device 51 is smaller and the transmission is smoother. In this way, the use of one-stage transmission can greatly shorten the height of the transmission assembly 50 in the up and down direction, so that when the user operates the pruning machine 100, the center of gravity of the whole machine is closer to the connecting rod 60, thereby improving the user's operating feel.

The second transmission device 52 is disposed in the front housing 20 for converting the rotation transmitted from the motor 30 into the reciprocating motion of the cutting assembly 70 . The second transmission device 52 includes a first bevel gear 521 , a second bevel gear 522 and an eccentric shaft 525 . The first bevel gear 521 is connected to the transmission shaft 53 and is driven by the transmission shaft 53 to rotate around the first axis 102 . The second bevel gear 522 is driven by the first bevel gear 521 to rotate around the second axis 103 perpendicular to the first axis 102 . The second bevel gear 522 drives the eccentric shaft 525 to rotate synchronously around the second axis 103 . In this embodiment, the first bevel gear 521 has a first cone surface 5211, and the distance from the second axis 103 to the first cone surface 5211 is less than or equal to 18 mm. Further, the distance from the second axis 103 to the first tapered surface 5211 is less than or equal to 15 mm. Further, the distance from the second axis 103 to the first tapered surface 5211 is less than or equal to 12 mm.

A first eccentric part 523 and a second eccentric part 524 are also formed on the eccentric shaft 525 . Both the first eccentric part 523 and the second eccentric part 524 can rotate about the second axis 103 . Specifically, the first eccentric part 523 is used to cooperate with the first blade 71 , and the second eccentric part 524 is used to cooperate with the second blade 72 . In this embodiment, the centers of the first eccentric part 523 and the second eccentric part 524 are staggered, and the centers of the first eccentric part 523 and the second eccentric part 524 are on a plane parallel to the first axis 102 The projections are spaced a certain distance apart. In this way, the second bevel gear 522 drives the first eccentric portion 523 and the second eccentric portion 524 to rotate, thereby causing the first blade 71 and the second blade 72 to move relative to each other in the direction along the longitudinal axis 101 .

In this embodiment, the transmission assembly 50 is not taken as a whole, but is divided into a first transmission device 51 arranged on the rear side of the pruning machine 100 and a second transmission device 52 arranged on the front side of the pruning machine 100 . In this way, the weight of the transmission assembly 50 is evenly distributed in the front and rear directions of the pruning machine 100, which can effectively improve the balance of the entire machine and improve the user experience. On the other hand, in this application, the second transmission device 52 adopts one-stage gear transmission, which can effectively reduce the size of the transmission assembly 50 and reduce the weight of the entire machine.

In some embodiments, the front housing 20 is also formed with a first oil filling port 22 communicating with the second accommodation space. The first oil filling port 22 is located at the meshing point of the first bevel gear 521 and the second bevel gear 522 in the up and down direction. . The user can inject lubricating oil into the second transmission device 51 in the front housing 20 through the first oil filling port 22 to lubricate the transmission components, which can effectively reduce the wear of the transmission components and extend the service life of the transmission components. In this way, the lubricating oil injected into the front housing 20 by the user is quickly applied to the first bevel gear 521 and the second bevel gear 522 under the action of the first bevel gear 521 and the second bevel gear 522. It has better lubrication effect and can also prevent a large amount of lubricating oil from splashing on the inner wall of the front housing 20 . In this embodiment, a second oil filling port 23 is also included for providing lubricating oil to the cutting assembly 70 . The position of the second oil filling port 23 is a conventional position and will not be described in detail in this application.

In this embodiment, the connecting rod 60 connects the front housing 20 and the rear housing 10 . The connecting rod 60 extends along the first axis 102 direction to form a first end 61 and a second end 62 . The first end 61 of the connecting rod 60 is supported by the front housing 20 , that is, the first end 61 of the connecting rod 60 is fixedly connected to the front housing 20 . The second end 62 of the connecting rod 60 is supported by the rear housing 10 . Specifically, the second end 62 of the connecting rod 60 is supported by the gear box 513 provided in the rear housing 10 for accommodating the first transmission device 51 . That is, the second end 62 of the connecting rod 60 is fixedly connected to the rear housing 10 . Specifically, the front housing 20 is formed or connected with a first connecting end 21 for connecting the first end 61 of the connecting rod 60 . The front end surface 5131 of the gear box 513 is formed or connected with a second connecting end 5132 for connecting the second end 62 of the connecting rod 60 . In this embodiment, the first connecting end 21 of the front housing 20 is sleeved on the first end 61 of the connecting pipe 60 and is assembled by fastening with screws. The second connecting end 5132 of the gear box 513 is sleeved on the second end 62 of the connecting rod 60 and is fixedly installed in a tight fitting manner. Of course, it should be understood that those skilled in the art can design the connection method and connection position between the connecting rod 60 and the front housing 20 and the rear housing 10 according to actual application conditions, and this is not done in this application. limit.

In some embodiments, as shown in FIGS. 5 and 6 , the connecting rod 60 extends along the first axis 102 and is a hollow structure. It can be understood that the connecting rod 60 is formed with a first through hole 63 extending along the first axis 102 direction, and the transmission shaft 53 is disposed in the above-mentioned first through hole 63 along the first axis 102 direction. In some embodiments, the transmission shaft 53 may also be provided with a hollow structure. In this embodiment, the connecting rod 60 includes carbon fiber material, and the ratio of the density and tensile strength of the connecting rod 60 is greater than or equal to 4.5kg/(m3·MPa) and less than or equal to 15kg/(m3·MPa). The connecting rod 60 is manufactured using a special-shaped molding process. Of course, the connecting rod 60 can also be made of a mixture of carbon fiber material and plastic.

In this way, the strength of the connecting rod 60 of the pruning machine 100 can meet the requirements of the front housing 20 and the cutting assembly 70, and at the same time, the weight of the front part of the pruning machine 100 can be reduced, thereby improving the user's work efficiency and conducive to improvements. The position of the center of gravity of the pruner 100. Using the above-mentioned materials can reduce the weight of the pruning machine 100, allowing the user to save more effort during operation. In this embodiment, the connecting rod 60 is configured in a circular tube shape. It can be understood that the connecting rod 60 may also be configured in a square tubular shape or other shapes.

In some embodiments, the connecting rod assembly 3 further includes a plurality of stoppers 64 between the connecting rod 60 and the drive shaft 63 . Specifically, the limiting member 64 is sleeved on the driving shaft 53 and is used to limit the connecting rod 60 and the driving shaft 53 on a plane perpendicular to the first axis 102 . Of course, the limiting member 64 can also be directly connected to the inner wall of the connecting rod 60 . In this way, when the transmission shaft 53 is installed into the connecting rod 60, under the action of the plurality of limiting members 64, the transmission shaft 53 and the connecting rod 60 not only ensure high coaxiality, but also have high stability. , to ensure that when the user operates the pruning machine 100 for multi-angle cutting, the transmission shaft 53 can be well fixed in the connecting rod 60 and ensures a high coaxiality.

Referring to FIGS. 3 and 4 , the cutting assembly 70 is used to perform the cutting function of the pruning machine 100 . A part of the cutting assembly 70 is accommodated in the second accommodation space formed by the front housing 20 , and the other part extends out of the second accommodation space along the longitudinal axis 101 . In this embodiment, the cutting assembly 70 includes a first blade 71 driven by the motor 30 , a second blade 72 capable of reciprocating relative to the first blade 71 along the direction of the longitudinal axis 101 , a blade bracket 73 and a protective tooth 74 . Specifically, the cutting assembly 70 extends along the longitudinal axis 101 . A plurality of cutting teeth 711 are arranged on both the first blade 71 and the second blade 72 , and the plurality of cutting teeth 711 are equally spaced along the longitudinal axis 101 . The protective teeth 74 are used to prevent the user's legs and arms from extending between two adjacent cutting teeth 711 . Specifically, the blade space 73 is made of a mixture of carbon fiber material and glass fiber material.

In some embodiments, the center front housing 20 of the present application is also suitable for use with the cutting assembly 70a shown in Figures 7 and 8. Different from the cutting assembly 70 in FIG. 1 , when the cutting assembly 70a in this embodiment needs to be replaced, the blade can be replaced without opening the front housing 20 , which is more convenient.

Specifically, when the user needs to replace the first blade 71a on the cutting assembly 70a, first loosen and remove the screw on the third fastener 73a, and move the third fastener 73a in the fourth direction, so that The third fastener 73a is removable from the front housing 20. After the third fastener 73a is removed, the first blade 71a is moved in the fourth direction. When the first hole 712a on the first blade 71a moves to the fourth fastener 74a, the first blade 71a can move upward and disengage. Third fastener 73a. The above is the process of removing the first blade 71a. It can be understood that the steps of removing the second blade 72a and their installation steps are also familiar to those skilled in the art, and will not be described again here. In this way, the pruning machine 100 in the present application can adopt two forms of cutting components. Specifically, when installing and disassembling a cutting assembly, the front housing 20 needs to be opened first and then operated. Another kind of cutting assembly does not need to open the front housing 20 when replacing the blade, which is more convenient and faster.

Referring to FIG. 9 , in this embodiment, on the longitudinal axis 101 , the distance L1 from the front end of the cutting assembly 70 of the pruning machine 100 to the rear end of the rear housing 10 is greater than or equal to 1.1 m and less than or equal to 2.2 m. Further, the distance L1 from the front end of the cutting assembly 70 of the pruning machine 100 to the rear end of the rear housing 10 is greater than or equal to 0.9 m and less than or equal to 1.8 m. Further, the distance L1 from the front end of the cutting assembly 70 of the pruning machine 100 to the rear end of the rear housing 10 is greater than or equal to 0.7 m and less than or equal to 1.5 m. In this way, the pruning machine using the above settings can be operated with both hands, making it more portable and safer; on the other hand, the connecting rod structure allows the pruning machine to have a better cutting height, which is more conducive to meeting the different cutting needs of users. .

As shown in FIGS. 9 and 10 , the center of gravity G of the pruning machine 100 is located between the main handle 13 and the auxiliary handle 14 in the front-rear direction. Specifically, when the user performs flat cutting (as shown in FIG. 9 ), the user holds the main handle 13 with one hand and the main grip part 141 with the other hand. At this time, the center of gravity G of the pruning machine 100 is at The distance between the projection on the plane perpendicular to the up-down direction and the projection of the first axis 102 on the above-mentioned plane is relatively small, almost zero. When the user performs flat cutting (as shown in FIG. 10 ), one hand of the user holds the main handle 13 and the other hand holds the side grip part 142 . At this time, the user's hand holding the side grip part 142 can be used as far as possible. Possibly close to the connecting portion 143, so that the center of gravity G of the pruning machine 100 is as close as possible to the first axis 102, so that the pruning machine 100 will not tilt in the left and right directions, thereby achieving more stable operation. In this embodiment, the distance L4 from the center of gravity G of the pruning machine 100 to the first axis 102 is greater than or equal to 0 and less than or equal to 30 mm. Further, the distance L4 from the center of gravity G of the pruning machine 100 to the first axis 102 is greater than or equal to 0 and less than or equal to 20 mm. Further, the distance L4 from the center of gravity G of the pruning machine 100 to the first axis 102 is greater than or equal to 0 and less than or equal to 10 mm. In this application, setting the center of gravity of the pruning machine in this way can ensure the balance of the whole machine and reduce the user's fatigue during use.

Referring to FIGS. 2 and 12 , the pruning machine 100 further includes an auxiliary handle 14 located on the front side of the main handle 13 in the direction of the first axis 102 . When operating the pruning machine 100 for cutting operations, the user can hold the auxiliary handle 14 and the main handle 13 with both hands at the same time to achieve more stable operation. In this embodiment, the main handle 13 and the motor 30 are disposed on the same side of the auxiliary handle 14 , and the auxiliary handle 14 is closer to the cutting assembly 70 than the main handle 13 . The auxiliary handle 14 is also spaced apart from the main handle 13 by a certain distance in the direction of the first axis 102, so that the user can control the pruning machine 100 more stably.

Specifically, the auxiliary handle 14 is configured as a D-shaped handle and has multiple grip parts, which can meet the user's cutting needs in different directions, and is easy to operate and not prone to fatigue. In this embodiment, the auxiliary handle 14 includes a main grip part 141, a side grip part 142 and a connecting part 143. The main grip part 141 and the side grip part 142 are respectively used for the user to hold with the other hand when performing flat cutting or side cutting. Specifically, the main gripping portion 141 also extends in a direction perpendicular to the first axis 102 , and the main gripping portion 141 spans the pruning machine 100 in the left-right direction. In this way, when the user performs flat cutting, the user can hold the main handle 13 with one hand and the main grip portion 141 of the auxiliary handle 14 with the other hand, thereby achieving stable cutting. The number of side grip parts 142 is 2. The two side grip parts 142 are respectively provided on both sides of the main grip part 141. The main grip part 141 connects the two side grip parts 142. The extension of the side grip parts 142 The direction is perpendicular to the extension direction of the main grip portion 141 , and the extension direction of the side grip portion 142 also intersects obliquely with the first axis 102 . The connecting portion 143 is connected to the two side holding portions 142 respectively, and is used to fixedly install the auxiliary handle 14 to the pruning machine 100 . Specifically, in a plane perpendicular to the first axis 102, the projection of the auxiliary handle 14 on the plane surrounds a D-shaped area, and the projection of the connecting rod 60 on the above-mentioned plane is at least partially located within the D-shaped area.

In some embodiments, the auxiliary handle 14 is secured to the connecting rod 60 via the connection 143 . In some embodiments, the auxiliary handle 14 is fixedly mounted to the first connection end 21 of the front housing 20 through the connection portion 143 . In some embodiments, the auxiliary handle 14 is fixedly connected to both the connecting rod 60 and the first connecting end 21 of the front housing 20 through the connecting portion 143 . In this embodiment, the connecting portion 143 of the auxiliary handle 14 is connected to the connecting rod 60 through the first locking device 145, and is connected to the first connecting end 21 of the front housing 20 through the second locking device 146. As shown in FIG. 11 , the first connection end 21 of the front housing 20 is formed with a first end surface 211 , and the distance L5 from the auxiliary handle 14 to the plane where the first end surface 211 is located is greater than or equal to 0 and less than or equal to 90 mm. Further, the distance L5 from the auxiliary handle 14 to the plane where the first end surface 211 is located is greater than or equal to 0 and less than or equal to 70 mm. Further, the distance L5 from the auxiliary handle 14 to the plane where the first end surface 211 is located is greater than or equal to 0 and less than or equal to 50 mm. Further, the distance L5 from the auxiliary handle 14 to the plane where the first end surface 211 is located is greater than or equal to 0 and less than or equal to 20 mm. It should be understood that the distance L5 refers to the distance from the side of the auxiliary handle 14 close to the first end surface 211 to the first end surface 211 .

Specifically, the connecting portion 143 is formed with a groove 1431 capable of receiving the connecting rod 60 . During the assembly process, first the connecting rods 60 are placed in the second locking device 146, then they are placed in the above-mentioned groove 1431, and finally they are fixedly installed to the first fastener 1461 on the front housing 20. On one connecting end 21, at the same time, the second locking device 146, the first locking device 145 and the connecting portion 143 of the auxiliary handle 14 are fixed in the up and down direction through the second fastener 1462. In this way, while the auxiliary handle 14 is fixedly installed to the connecting rod 60 through the first locking device 145 and the second locking device 146, the auxiliary handle 14 is also fixed to the first connection end 21 of the front housing 20, thereby realizing the auxiliary handle. The position limits 14 in various directions improve the stability of the auxiliary handle 14 and improve the safety performance of the entire machine.

The pruning machine 100 also includes an operating component for a user to operate to control the status of the pruning machine 100 . Referring to FIG. 1 , the operating component includes at least a first switch 131 and a second switch 144 . The first switch 131 has a release state and a trigger state. Similarly, the second switch 144 also has a release state and a trigger state. The user can operate the first switch 131 and the second switch 144 to switch between the release state and the trigger state. The pruning machine 100 also includes a control device. When the first switch 131 and the second switch 144 are both in a triggered state, the control device controls the motor 30 to start. In this embodiment, the first switch 131 is set as a trigger. It should be understood that the first switch 131 is only an external component, which should also be connected to a circuit component, and the circuit component is disposed in the space formed by the main handle 13 .

Referring to FIG. 10 , in the front-rear direction, the distance L2 from the first switch 131 to the first cutting tooth 7111 of the cutting assembly 70 is greater than or equal to 0.12 m and less than or equal to 1000 mm. specifically. The first cutting teeth 7111 of the cutting assembly 70 may be the cutting teeth located at the rearmost end of the first blade 71 , or may be the cutting teeth located at the rearmost end of the second blade 72 . Further, in the front-rear direction, the distance L2 from the first switch 131 to the first cutting tooth 7111 of the cutting assembly 70 is greater than or equal to 0.2 m and less than or equal to 0.9 m. In this embodiment, the distance L3 from the auxiliary handle 14 to the first cutting teeth 7111 of the cutting assembly 70 is greater than or equal to 0.3 m and less than or equal to 0.8 m in the front-rear direction. Further, in the front-rear direction, the distance L3 from the auxiliary handle 14 to the first cutting teeth 7111 of the cutting assembly 70 is greater than or equal to 0.4 m and less than or equal to 0.6 m.

In some embodiments, the ratio of the distance from the first switch 131 to the first cutting tooth 7111 to the distance from the second switch 144 to the first cutting tooth 7111 is greater than or equal to 1 and less than or equal to 8.5. Further, the ratio of the distance between the first switch 131 and the first cutting tooth 7111 and the distance between the second switch 144 and the first cutting tooth 7111 is greater than or equal to 2 and less than or equal to 6. The ratio of the distance between the first switch 131 and the first cutting tooth 7111 and the distance between the second switch 144 and the first cutting tooth 7111 is greater than or equal to 3 and less than or equal to 5.

Specifically, the first switch 131 is installed to the main handle 13 and forms a rotational connection with the main handle 13 . The user's hand holding the main handle 13 can operate the first switch 131 to rotate to switch between the release state and the trigger state. In this embodiment, the first switch 131 is set as a trigger. The second switch 144 is installed on the auxiliary handle 14 and forms a sliding connection with the auxiliary handle 14 . The user's hand holding the auxiliary handle 14 can operate the second switch 144 to slide to switch between the release state and the trigger state. As shown in FIG. 13 , the auxiliary handle 14 is formed with a third accommodation space 146 for accommodating a partial second switch 144 . The second switch 144 is disposed inside the auxiliary handle 14 and substantially along the extending direction of the auxiliary handle 14 . In this way, the user can easily trigger the second switch 144 at various cutting angles when operating the pruning machine 100 . The second switch 144 is also connected to a signal line for outputting a signal or a power line for providing electric energy. In this embodiment, the above-mentioned power lines and signal lines are wrapped with plastic parts and located outside the connecting tube 60 , extending along the direction of the first axis 102 to the circuit board assembly 81 in the rear case 10 . In some embodiments, the second switch 144 can also be configured as a wireless switch, that is, no signal line is provided between the second switch 144 and the control device, but signal transmission is performed through wireless communication.

In some embodiments, the second switch 144 may also be disposed on the connecting rod 60 . Specifically, when the pruning machine 100 is not provided with the auxiliary handle 14, or when the gripping part for the user to hold is provided on the connecting rod 60, the second switch 144 is also provided on the connecting rod 60 accordingly.

In some embodiments, as shown in FIG. 1 , the operating component also includes a speed control unit, a display unit, a Bluetooth module and other control interfaces. The above-mentioned control interface may be provided on the rear housing 10 and located on the front side of the main handle 13 . Of course, the above control interface can also be set in other locations. Specifically, the speed control unit at least includes a speed control switch, and the user controls the rotation speed of the motor 30 through the speed control switch. The display unit may be used to display the current power of the power supply device 40 . The Bluetooth module can be used to communicate with other external devices or to communicate with internal settings.

The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the industry should understand that the above embodiments do not limit the present application in any way, and any technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present application.

Claims (12)

1. A pruner, comprising:

a front end device comprising at least a cutting assembly extending along a longitudinal axis and a front housing supporting the cutting assembly;

a back end device comprising at least a motor for driving the cutting assembly and a back housing supporting the motor;

a connecting rod connecting the front end device and the rear end device;

a power supply device supported by the rear housing for providing electrical power to the motor;

the main handle is connected with a first switch;

the pruning machine is characterized by further comprising:

a second switch provided on a front side of the first switch;

the distance between the first switch and the first cutting tooth of the cutting assembly in the direction of the longitudinal axis is greater than or equal to 120mm and less than or equal to 1000mm.

2. The pruner as claimed in claim 1, wherein the rear housing further comprises a receiving portion forming a first receiving space for receiving the motor, and a coupling portion; the pruner further comprises a power supply device detachably connected to the joint part at least for supplying power to the motor.

3. The pruner as recited in claim 2, further comprising an auxiliary handle located on a front side of the main handle in a longitudinal axis direction; the auxiliary handle has a main grip portion and at least two side grip portions for a user to grip.

4. A pruner as claimed in claim 3, further comprising a second switch mounted to the auxiliary handle; the motor is operated to drive the cutting assembly to operate when the first switch and the second switch are simultaneously operated.

5. The pruner of claim 4, wherein a ratio of a distance from the first switch to the first cutting tooth to a distance from the second switch to the first cutting tooth in the longitudinal axis direction is greater than or equal to 1 and less than or equal to 8.3.

6. The pruner of claim 4, wherein the first switch is configured as a trigger in rotational connection with the main handle; the second switch part is positioned in a third accommodating space formed by the auxiliary handle and is in sliding connection with the auxiliary handle.

7. The pruner of claim 6, wherein the second switch extends generally along an inner side of the auxiliary handle and is disposed opposite the main grip portion and the side grip portion of the auxiliary handle.

8. The pruner of claim 4, further comprising a circuit board assembly disposed within the first containment space; the first switch and the second switch are connected to the circuit board assembly.

9. The pruner of claim 8, wherein communication between the circuit board assembly and the second switch is configured as wired or wireless communication.

10. The pruner of claim 2, further comprising a control interface for being manipulated by a user to control a state of the pruner, the control interface being disposed at an upper surface of the rear casing; the control interface at least comprises a speed regulating switch for controlling the rotating speed of the motor and a display interface for displaying the state of the power supply device.

11. The pruner of claim 2, further comprising a first transmission and a second transmission; the first transmission device is positioned in the rear shell, and the second transmission device is positioned in the front shell; the transmission shaft is connected with the first transmission device and the second transmission device and is used for transmitting power between the first transmission device and the second transmission device.

12. The pruner of claim 1, wherein the cutting assembly includes first and second blades and a blade carrier for supporting the first and second blades, the blade carrier extending in the longitudinal axial direction; the blade support is formed by mixing a carbon fiber material and a glass fiber material.