Pruner and power tool

Abstract

The utility model relates to a pruner and an electric tool. The pruner comprises: a casing provided with a casing air inlet and a casing air outlet which are independent from each other and arranged at an interval; a blade assembly; the motor is arranged in the machine shell and provides driving force for the blade assembly. The motor comprises a motor air inlet, a motor air outlet and an internal circulation space communicated with the motor air inlet and the motor air outlet; the blocking piece is arranged between the motor and the machine shell, the blocking piece is matched with the motor to divide an inner cavity of the machine shell into an air inlet area and an air outlet area, the machine shell air inlet and the motor air inlet are communicated with the air inlet area, and the machine shell air outlet and the motor air outlet are communicated with the air outlet area; the motor comprises a motor outer wall, and a gap is formed between the motor outer wall and the machine shell. The blocking piece is configured to block airflow from flowing from the air outlet area to the air inlet area through the gap between the outer wall of the motor and the machine shell. According to the pruning machine, by arranging the blocking piece, the air inlet airflow loss of the motor can be reduced, and the situation that unclean airflow flows into the motor is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power tools, in particular to a trimmer and an electric tool. BACKGROUND

[0002] The trimmer is a power tool for gardening pruning. In the related art, there is a gap between the motor and the machine shell of the trimmer to reduce the vibration transmitted to the user. The hot air flow out of the motor air outlet and the external air flow into the machine shell from the machine shell air outlet may flow into the motor air inlet from the gap between the motor and the machine shell, and then flow into the motor. SUMMARY

[0003] Therefore, the present application provides a trimmer and an electric tool, which can inhibit the hot air flow out of the motor air outlet and the external air flow into the machine shell from the machine shell air outlet from flowing back to the motor air inlet through the gap between the motor and the machine shell, thereby prolonging the service life of the motor.

[0004] In a first aspect, the present application provides a trimmer, comprising:

[0005] a machine shell, wherein a machine shell air inlet and a machine shell air outlet are arranged on the machine shell and are independent of each other and spaced apart;

[0006] a blade assembly configured to perform a work task;

[0007] a motor arranged in the machine shell and configured to provide driving force for the blade assembly, wherein the motor comprises a motor air inlet, a motor air outlet, and an internal flow space connected between the motor air inlet and the motor air outlet;

[0008] a barrier arranged between the motor and the machine shell, wherein the barrier cooperates with the motor to divide an inner cavity of the machine shell into an air inlet area and an air outlet area, the machine shell air inlet and the motor air inlet are connected to the air inlet area, and the machine shell air outlet and the motor air outlet are connected to the air outlet area;

[0009] the motor comprises a power output shaft and a motor outer wall extending along the power output shaft, and a gap is arranged between the motor outer wall and the machine shell;

[0010] the barrier is configured to block the air flow from the air outlet area to the air inlet area through the gap between the motor outer wall and the machine shell.

[0011] In some embodiments, the trimmer is configured such that at least part of the air flow enters the air inlet area from the machine shell air inlet, then flows into the internal flow space from the motor air inlet, then flows out of the motor air outlet to the air outlet area, and finally flows from the machine shell air outlet to the outside of the machine shell.

[0012] In some embodiments, the barrier is configured to be at least partially elastic or flexible; or, the barrier is configured to be at least partially rigid, and a gap is provided between the barrier and the housing.

[0013] In some embodiments, the housing air inlet includes a front end surface away from the housing air outlet and a rear end surface close to the housing air outlet in the extension direction of the power output shaft; the housing air outlet includes a front end surface close to the housing air inlet and a rear end surface away from the housing air inlet in the extension direction of the power output shaft; and the barrier is disposed between the rear end surface of the housing air inlet and the front end surface of the housing air outlet.

[0014] In some embodiments, the barrier is annular; the barrier includes a housing connecting portion configured to mount the barrier to the housing, a motor connecting portion configured to mount the barrier to the motor, and an intermediate extension portion extending between the housing connecting portion and the motor connecting portion.

[0015] In some embodiments, the motor connecting portion includes a motor engaging end surface configured to engage with the motor and close to an end surface of the intermediate extension portion, airflow flowing to the motor engaging end surface is guided to flow towards a direction close to the motor air inlet; in the extension direction of the power output shaft of the motor, a distance between the motor engaging end surface and the motor air inlet is less than a distance between the motor engaging end surface and the motor air outlet.

[0016] In some embodiments, the motor connecting portion includes a motor engaging end surface configured to engage with the motor and close to an end surface of the intermediate extension portion, airflow flowing to the motor engaging end surface is guided to flow towards a direction close to the motor air inlet; in the extension direction of the power output shaft of the motor, a distance between the motor engaging end surface and the motor air inlet is less than a distance between the motor engaging end surface and the motor air outlet.

[0017] In some embodiments, the motor connecting portion is sleeved with the motor outer wall; a limiting clamping groove is provided on the housing inner wall, and the housing connecting portion is clamped and matched with the housing inner wall through the limiting clamping groove.

[0018] In some embodiments, the barrier includes a corrugated structure extending between the housing and the motor outer wall, the corrugated structure is configured to at least buffer the vibration transmitted from the motor to the housing in the radial direction of the power output shaft of the motor.

[0019] In some embodiments, the barrier includes oppositely arranged inner and outer barrier walls connected at one end to form a cavity therebetween, the other end of the inner barrier wall being connected to the motor, and the other end of the outer barrier wall being connected to the housing.

[0020] In some embodiments, the trimmer extends along three orthogonal spatial directions of length extension direction L, width extension direction W, and height extension direction H; the trimmer further includes a main handle provided on the housing for a user to hold, and in the height extension direction H, with one end of the housing on which the main handle is provided being upper, and the other end of the housing away from the main handle being lower; in the height extension direction H, the motor air inlet is located on the upper side of the motor air outlet, and the housing air inlet is located on the upper side of the housing air outlet.

[0021] In some embodiments, in a use state of the trimmer, the motor air inlet is located on the upper side of the motor air outlet.

[0022] In a second aspect, the present application provides an electric power tool, comprising:

[0023] a housing, the housing being provided with a housing air inlet and a housing air outlet which are independently arranged and spaced apart from each other;

[0024] a working assembly configured to perform a working task;

[0025] a motor provided in the housing and configured to provide driving force for the working assembly; the motor includes a motor air inlet, a motor air outlet, and an internal flow space connecting the motor air inlet and the motor air outlet;

[0026] a barrier provided between the motor and the housing, the barrier cooperating with the motor to divide an internal cavity of the housing into an air inlet region and an air outlet region, the housing air inlet and the motor air inlet being in communication with the air inlet region, and the housing air outlet and the motor air outlet being in communication with the air outlet region;

[0027] the motor includes a power output shaft and a motor outer wall extending along the direction of the power output shaft, and a gap is provided between the motor outer wall and the housing;

[0028] the barrier is configured to block airflow from the air outlet region to the air inlet region via the gap between the motor outer wall and the housing.

[0029] The aforementioned pruning machine and power tools, by installing a baffle between the motor and the housing, prevent airflow from the outlet area through the gap between the motor's outer wall and the housing to the inlet area. This suppresses the airflow from the motor outlet and the airflow entering the housing from the outlet from the housing back to the motor inlet through the gap between the motor's outer wall and the housing. This reduces airflow loss, improves the motor's heat dissipation performance, and reduces the inflow of unclean air into the motor, thus improving the motor's reliability, extending its service life, and enhancing the user experience. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a pruning machine according to some embodiments of this application.

[0031] Figure 2 This is a three-dimensional structural schematic diagram of a pruning machine according to some embodiments of this application from another perspective.

[0032] Figure 3 This is a partially exploded structural diagram of a pruning machine according to some embodiments of this application.

[0033] Figure 4 This is a partially exploded structural diagram of a pruning machine according to some embodiments of this application from another perspective.

[0034] Figure 5 This is a fully exploded structural diagram of a pruning machine according to some embodiments of this application.

[0035] Figure 6 This is a partial cross-sectional view of a pruning machine according to some embodiments of this application.

[0036] Figure 7 This is a bottom view of a pruning machine according to some embodiments of this application.

[0037] Figure 8 for Figure 7 A cross-sectional view of section AA in the middle.

[0038] Figure 9 for Figure 7 A sectional view of section DD in the middle.

[0039] Figure 10 for Figure 8 A magnified structural diagram at point E in the middle.

[0040] Figure 11 This is a partially enlarged cross-sectional view of a pruning machine according to some embodiments of this application.

[0041] Figure 12 for Figure 8 A magnified structural diagram at point B in the middle.

[0042] Figure 13 forFigure 7 Cross-sectional view of the middle C-C section.

[0043] Figure 14 Front view of the trimmer part structure for some embodiments of the present application.

[0044] Figure 15 Perspective view of the vibration isolation sleeve for some embodiments of the present application.

[0045] Figure 16 Perspective view of the vibration isolation sleeve for some embodiments of the present application.

[0046] Reference signs:

[0047] 100, trimmer;

[0048] 1, blade assembly; 11, blade; 111, first blade; 112, second blade;

[0049] 2, drive mechanism; 21, motor; 211, motor air inlet; 212, motor air outlet; 213, internal flow space; 214, power output shaft; 215, motor outer wall; 22, transmission module; 23, fan; 24, electrical components;

[0050] 3, housing; 31, grip part; 311, main handle; 312, rear handle; 32, first half shell; 33, second half shell; 34, connecting hole; 35, housing air inlet; 36, housing air outlet; 37, air inlet area; 38, air outlet area; 39, limiting clamping groove;

[0051] 4, drive housing; 41, mounting part; 42, front edge; 43, rear edge;

[0052] 5, first support structure; 51, limiting mounting hole; 52, support beam;

[0053] 6, second support structure; 61, elastic support; 611, matching surface; 62, mounting groove; 63, mounting column;

[0054] 7, elastic damping member;

[0055] 8, vibration isolation sleeve; 81, inner hole; 82, lug part; 83, stop part; 84, embedded part;

[0056] 9, barrier; 91, housing connecting part; 911, housing engaging end surface; 92, motor connecting part; 921, motor engaging end surface; 93, intermediate extension part; 94, corrugated structure; 941, wave crest part; 942, wave trough part; 95, inner barrier wall; 96, outer barrier wall;

[0057] 10, filter screen;

[0058] Length extension direction L; width extension direction W; height extension direction H. DETAILED DESCRIPTION

[0059] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways without some of the specific details described herein, and it is understood that the present application is not limited to the embodiments described below. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0061] In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application, unless specifically defined and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal level than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal level than the second feature.

[0064] It should be noted that an element referred to as being "fixed" or "set" on another element can be directly on the other element or can exist with an intermediate element. An element is considered to be "connected" to another element, which can be directly connected to the other element or can exist with an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the present application are for illustrative purposes only and are not intended to be the only implementation.

[0065] The trimmer is a power tool for gardening pruning, which can be used for pruning various low shrubs, hedges and other outdoor plants such as green plants. The trimmer usually includes a casing, a motor, a gear box, a blade assembly and a holding handle, etc. The holding handle is used to hold the trimmer, and the blade assembly is driven to move for pruning operation through the gear box. The motor is arranged in the casing, and the motor is used to provide driving force for the blade assembly.

[0066] In the related art, there is a gap between the motor and the casing to reduce the vibration transmitted to the user. It can occur that the hot air flow flowing out of the motor air outlet strays into the motor air inlet from the gap between the casing and the motor, and then flows into the motor interior through the motor air inlet. The hot air flow flowing into the motor interior affects the heat dissipation of the motor, which can affect the service life of the motor. It can also occur that the external air flowing into the casing from the casing air outlet strays into the motor air inlet from the gap between the casing and the motor, and then flows into the motor interior through the motor air inlet. Since the possibility of the external air carrying impurities is relatively large, the unclean air flowing into the motor interior can affect the service life of the motor.

[0067] Figure 1 Fig. 1 is a perspective view of a trimmer according to some embodiments of the present application, Figure 2 Fig. 2 is a perspective view of the trimmer according to some embodiments of the present application from another angle, Figure 3 Fig. 3 is a partially exploded view of the trimmer according to some embodiments of the present application, Figure 4 Fig. 4 is a partially exploded view of the trimmer according to some embodiments of the present application from another angle, Figure 5 Fig. 5 is an exploded view of the trimmer according to some embodiments of the present application.Figure 6 is a partial sectional view of a trimmer according to some embodiments of the present application, Figure 7 is a bottom view of a trimmer according to some embodiments of the present application, Figure 8 is a sectional view along A-A, Figure 7 is a sectional view along B-B, Figure 9 is a sectional view along C-C, Figure 7 is a sectional view along D-D, Figure 10 is a sectional view along E-E, Figure 8 is an enlarged structural schematic view at E, Figure 11 is a partial enlarged sectional view of a trimmer according to some embodiments of the present application.

[0068] As shown in Figures 1 to 8 , the embodiments of the present application provide a trimmer 100. The trimmer 100 comprises a housing 3, a blade assembly 1, a motor 21 and a barrier 9. As shown in Figures 9 to 11 , the housing 3 is provided with a housing air inlet 35 and a housing air outlet 36 which are independent and spaced apart. The blade assembly 1 is configured to perform a work task. The motor 21 is arranged in the housing 3 and provides driving force for the blade assembly 1. The motor 21 comprises a motor air inlet 211, a motor air outlet 212 and an internal flow space 213 which communicates the motor air inlet 211 and the motor air outlet 212. The barrier 9 is arranged between the motor 21 and the housing 3, and the barrier 9 cooperates with the motor 21 to divide the internal cavity of the housing 3 into an air inlet area 37 and an air outlet area 38. The housing air inlet 35 and the motor air inlet 211 communicate with the air inlet area 37, and the housing air outlet 36 and the motor air outlet 212 communicate with the air outlet area 38. The motor 21 comprises a power output shaft 214 and a motor outer wall 215 which extends in the direction of the power output shaft 214, and a gap D2 is provided between the motor outer wall 215 and the housing 3. The barrier 9 is configured to block airflow from the air outlet area 38 to the air inlet area 37 through the gap between the motor outer wall 215 and the housing 3.

[0069] Figure 9 and Figure 10 the hollow arrows in Figure 11 indicate the direction of airflow.

[0070] The blade assembly 1 is a functional module for performing a trimming work task. The trimmer 100 comprises a driving mechanism 2, which comprises the motor 21, and the power output shaft 214 of the motor 21 is in driving connection with the blade assembly 1 to provide driving force for the blade assembly 1. When the trimmer 100 is working, the motor 21 drives the blade assembly 1 to reciprocate to perform trimming work.

[0071] The motor outer wall 215 extends in the extension direction of the power output shaft 214. The internal flow space 213 of the motor 21 is located in the motor outer wall 215, and the motor air inlet 211 and the motor air outlet 212 communicate with the internal flow space 213.

[0072] The shell 3 is used to provide a mounting space. The motor 21 is mounted in the mounting space of the shell 3, and a gap D2 is provided between the motor outer wall 215 and the shell 3. The cutter bar assembly 1 and the motor 21 will vibrate when working. By providing the gap D2 between the motor outer wall 215 and the shell 3, the motor outer wall 215 and the shell 3 are not in direct contact, which can reduce the vibration generated by the motor 21 directly transmitted to the shell 3, reduce the vibration felt by the user, help to reduce the fatigue degree of the user when working for a long time, and improve the user experience.

[0073] The shell air inlet 35 and the shell air outlet 36 are connected with the mounting space of the shell 3, the shell air inlet 35 is used for the shell 3 to intake air, and the shell air outlet 36 is used for the shell 3 to exhaust air. Since the shell air inlet 35 and the shell air outlet 36 are independently and spaced apart from each other, the air intake position and the air exhaust position of the shell 3 are far apart, which can reduce the mutual interference of the air intake and the air exhaust of the shell 3.

[0074] The blocking piece 9 is arranged in the shell 3 and located between the motor 21 and the shell 3. The blocking piece 9 cooperates with the motor 21 to form two mutually separated cavities in the shell 3, so as to form mutually independent air intake area 37 and air exhaust area 38 in the shell 3. The specific structure of the blocking piece 9 is not limited here, as long as it can cooperate with the motor 21 to separate the mounting space inside the shell 3 into two mutually independent cavities. That is, the air intake area 37 is an air inlet cavity, and the air exhaust area 38 is an air outlet cavity. The shell air inlet 35 and the motor air inlet 211 are connected through the air intake area 37, the shell air outlet 36 and the motor air outlet 212 are connected through the air exhaust area 38, and the air intake area 37 and the air exhaust area 38 are fluidly connected by the internal flow space 213 of the motor 21.

[0075] When the pruning machine 100 works, the external airflow is sucked into the air intake area 37 from the shell air inlet 35, then enters the internal flow space 213 of the motor 21 from the motor air inlet 211, the airflow flowing through the inside of the motor 21 flows into the air exhaust area 38 through the motor air outlet 212, and then is blown out of the pruning machine 100 from the shell air outlet 36. The external airflow can heat and cool the motor 21 when passing through the inside of the motor 21, which can reduce the temperature of the motor 21 during work and avoid overheating failure of the motor 21.

[0076] By providing the blocking piece 9, the blocking piece 9 blocks the airflow from the air exhaust area 38 to the air intake area 37 through the gap D2 between the motor outer wall 215 and the shell 3, so that the blocking piece 9 can inhibit the airflow flowing out of the motor air outlet 212 and the airflow entering the shell 3 from the shell air outlet 36 from flowing through the gap D2 between the motor outer wall 215 and the shell 3 to the motor air inlet 211.

[0077] Due to the reduction of the backflow of the hot air flow from the motor air outlet 212 to the motor air inlet 211 inside the casing 3, the problem of the reduction of the working efficiency of the motor 21 caused by the hot air flow sucked into the casing 3 can be reduced. At the same time, the backflow of the air flow to the casing air inlet 35 inside the casing 3 can be inhibited, the problem of the cooling air entering the casing 3 being blocked caused by the backflow of the air flow inside the casing 3 can be reduced, the mutual interference of the air inlet and the air outlet inside the casing 3 can be reduced, and the air flow entering the motor air inlet 211 can be guided, thereby reducing the air flow loss into the motor 21. Due to the reduction of the air flow loss into the motor 21, the heat dissipation performance of the motor 21 can be improved, and the temperature of the motor 21 during operation can be reduced. Due to the reduction of the air flow carrying foreign matters from the casing air outlet 36 into the casing 3 and into the motor air inlet 211, the unclean air flow flowing into the motor 21 can be reduced. In this way, the reliability of the motor 21 can be improved, and the service life of the motor 21 can be prolonged.

[0078] The pruning machine 100 of the embodiment of the application can inhibit the air flow flowing out of the motor air outlet 212 and the air flow entering the casing 3 from the casing air outlet 36 from flowing through the gap D2 between the motor outer wall 215 and the casing 3 to the motor air inlet 211, can reduce the air flow loss of the motor 21, is conducive to improving the heat dissipation performance of the motor 21, can reduce the unclean air flow flowing into the motor 21, is conducive to improving the reliability of the motor 21 and prolonging the service life of the motor 21, and improves the user experience.

[0079] In some embodiments, as shown in Figure 3 The pruning machine 100 can further include a filter screen 10 covering the casing air inlet 35. When the pruning machine 100 is working, the air flow flows into the casing 3 from the casing air inlet 35. By arranging the filter screen 10 at the casing air inlet 35, the air inlet air flow can be filtered, and the external dust, leaf debris and other foreign matters can be reduced from flowing into the motor 21 along with the air flow. In this way, the air inlet air flow of the motor 21 is cleaner, which is conducive to improving the reliability of the motor 21 and prolonging the service life of the motor 21.

[0080] In some embodiments, as shown in Figures 9 to 11 The pruning machine 100 is configured to flow at least part of the air flow from the casing air inlet 35 into the air inlet area 37, then from the motor air inlet 211 into the internal flow space 213, and then from the motor air outlet 212 to the air outlet area 38, and finally from the casing air outlet 36 to the outside of the casing 3.

[0081] By controlling the flow direction of the air flow, at least part of the air flow flows through the inside of the motor 21, the motor 21 can be cooled by heat exchange, the temperature of the motor 21 during operation can be effectively reduced, overheating failure of the motor 21 can be avoided, and the reliability of the motor 21 can be improved and the service life of the motor 21 can be prolonged.

[0082] In some embodiments, as shown in Figure 10 The driving mechanism 2 of the pruning machine 100 can also include a fan 23 arranged at one end of the motor 21 in the extension direction of the power output shaft 214. The fan 23 can be arranged close to the motor air inlet 211 or close to the motor air outlet 212. The fan 23 can generate an air flow flowing through the motor 21 when working to cool and dissipate heat of the motor 21. By arranging the fan 23, the flow direction of the air flow can be controlled.

[0083] In some embodiments, the driving mechanism 2 can also include an electrical component 24 for controlling the motor 21, and the electrical component 24 can be arranged in the air outlet area 38, and the air flow flowing out of the motor air outlet 212 can flow through the electrical component 24. The electrical component 24 can include a control board. By arranging the electrical component 24 in the flow path of the cooling air flow, the electrical component 24 can be cooled and prevented from overheating, which is beneficial to improve the reliability of the motor 21.

[0084] In some embodiments, the blocking piece 9 is configured to be at least partially made of elastic material or flexible material.

[0085] The blocking piece 9 can be integrally formed of elastic material or flexible material, or part of the structure of the blocking piece 9 can be made of elastic material or flexible material, which is not limited herein. For example, the elastic material can include but is not limited to rubber or thermoplastic elastomer (TPE), etc. For example, the flexible material can include but is not limited to polyurethane (PU), acrylic resin, etc. In some specific embodiments, the blocking piece 9 can be a rubber piece. In some embodiments, the housing 3 and the motor 21 are connected with the blocking piece 9, so that the motor 21 and the housing 3 are connected in a soft manner. The soft connection can weaken the vibration transmission of the motor 21 to the housing 3.

[0086] In this way, at least part of the blocking piece 9 has elasticity or flexibility, the blocking piece 9 is arranged between the motor 21 and the housing 3, and can play a buffering and damping role, weaken the vibration transmission of the motor 21 to the housing 3, and reduce the direct transmission of the vibration of the motor 21 to the housing 3, thereby reducing the vibration felt by the user, reducing the fatigue degree of the user during long-time operation, and improving the user experience.

[0087] In some embodiments, the barrier 9 is configured to be at least partially rigid, and a gap is provided between the barrier 9 and the casing 3.

[0088] The rigid material can include, but is not limited to, plastic, composite material, metal material, etc. The plastic can be engineering plastic, etc. By configuring the barrier 9 to be at least partially rigid, the barrier 9 can have good dimensional stability, effectively blocking the airflow. Meanwhile, by providing a gap between the barrier 9 and the casing 3, the vibration can be reduced from being directly transmitted to the casing 3, which is conducive to reducing the vibration felt by the user.

[0089] In some embodiments, as shown in Figure 10 and Figure 11 , the casing air inlet 35 includes a front end face away from the casing air outlet 36 and a rear end face close to the casing air outlet 36 in the extension direction of the power output shaft 214; the casing air outlet 36 includes a front end face close to the casing air inlet 35 and a rear end face away from the casing air inlet 35 in the extension direction of the power output shaft 214; and the barrier 9 is disposed between the rear end face of the casing air inlet 35 and the front end face of the casing air outlet 36.

[0090] The barrier 9 is disposed between the rear end face of the casing air inlet 35 and the front end face of the casing air outlet 36, which means that the barrier 9 will not exceed the rear end face of the casing air inlet 35 or the front end face of the casing air outlet 36 in the extension direction of the power output shaft 214. By such a configuration, the barrier 9 is located at a position that has less impact on the intake airflow and the exhaust airflow, which can reduce the shielding of the barrier 9 to the casing air inlet 35 and the casing air outlet 36, reduce the impact of the barrier 9 on the intake airflow and the exhaust airflow, and is conducive to reducing airflow loss and improving heat dissipation performance.

[0091] In some embodiments, as shown in Figures 9 to 11 , the barrier 9 is annular; and the barrier 9 includes a casing connecting portion 91, a motor connecting portion 92, and an intermediate extending portion 93. The casing connecting portion 91 is configured to mount the barrier 9 to the casing 3. The motor connecting portion 92 is configured to mount the barrier 9 to the motor 21. The intermediate extending portion 93 extends between the casing connecting portion 91 and the motor connecting portion 92.

[0092] The annular barrier 9 is conveniently sleeved and installed in the annular gap D2 between the motor outer wall 215 and the casing 3. The barrier 9 is installed to the casing 3 through a casing connecting portion 91. The installation mode of the casing connecting portion 91 to the casing 3 is not limited here, which can include but is not limited to clamping, bonding, fastener connection, etc. The barrier 9 is installed to the motor 21 through a motor connecting portion 92. The installation mode of the motor connecting portion 92 to the motor 21 is not limited here, which can include but is not limited to clamping, bonding, fastener connection, etc. An intermediate extension portion 93 is connected between the casing connecting portion 91 and the motor connecting portion 92, and the intermediate extension portion 93 blocks the gap D2 between the motor outer wall 215 and the casing 3, thereby achieving the blocking of the airflow passing through the gap D2 between the motor outer wall 215 and the casing 3. The specific shape and material of the intermediate extension portion 93 are not limited here, as long as it can block the airflow.

[0093] In this way, the barrier 9 is conveniently installed in the gap D2 between the casing 3 and the motor outer wall 215, and the barrier 9 can effectively block the airflow from flowing through the gap D2 between the casing 3 and the motor outer wall 215, reduce the intake airflow loss of the motor 21, reduce the inflow of unclean airflow into the motor 21, and help improve the reliability and prolong the service life of the motor 21. Moreover, the structure of the barrier 9 is simple, easy to manufacture, and can reduce costs.

[0094] In some embodiments, as shown in Figure 10 and Figure 11 The motor connecting portion 92 includes a motor engaging end face 921, which is configured to engage with the motor 21 and is an end face close to the intermediate extension portion 93. When the airflow flows to the motor engaging end face 921, it will be guided to flow in a direction close to the motor air inlet 211. In the extension direction of the power output shaft 214 of the motor 21, the distance L3 between the motor engaging end face 921 and the motor air inlet 211 is less than the distance L4 between the motor engaging end face 921 and the motor air outlet 212.

[0095] The motor connecting portion 92 can guide the airflow entering from the casing air inlet 35 to flow toward the motor air inlet 211. At the same time, the motor engaging end face 921 is relatively closer to the motor air inlet 211, so that the motor connecting portion 92 of the barrier 9 is arranged close to the motor air inlet 211. In this way, the airflow entering from the casing air inlet 35 can be better guided to flow in a direction close to the motor air inlet 211, which is conducive to guiding the cooling airflow into the motor 21, thereby improving the air intake efficiency and the heat dissipation performance of the motor 21.

[0096] In some embodiments, as shown in Figure 10 and Figure 11As shown, the casing connecting portion 91 comprises a casing joint end face 911 configured to be jointed with the casing 3 and close to the end face of the middle extension portion 93, and the airflow flowing to the casing joint end face 911 is guided to flow in the direction of the middle extension portion 93. In the extension direction of the power output shaft 214 of the motor 21, the distance L5 between the casing joint end face 911 and the casing air inlet 35 is smaller than the distance L6 between the casing joint end face 911 and the casing air outlet 36.

[0097] The casing connecting portion 91 can guide the airflow entering from the casing air inlet 35 to flow to the middle extension portion 93, the middle extension portion 93 can receive the airflow entering from the casing air inlet 35 and make the airflow flow along the middle extension portion 93 towards the motor connecting portion 92, and the airflow is guided by the motor connecting portion 92 to flow to the motor air inlet 211, so that the barrier piece 9 can have the effect of converging the airflow. At the same time, the casing joint end face 911 is relatively closer to the casing air inlet 35, so that the casing connecting portion 91 of the barrier piece 9 is arranged close to the casing air inlet 35. In this way, the airflow entering from the casing air inlet 35 can be better guided to flow towards the middle extension portion 93, the converging effect is better, and it is beneficial to guide the airflow entering from the casing air inlet 35 to flow into the motor air inlet 211, so as to improve the air inlet efficiency and improve the heat dissipation performance of the motor 21.

[0098] In some embodiments, as shown in Figures 14 to 16 As shown, the motor connecting portion 92 is sleeved with the outer wall of the motor 21. The inner wall of the casing 3 is provided with a limiting clamping groove 39, and the casing connecting portion 91 is clamped and matched with the inner wall of the casing 3 through the limiting clamping groove 39, so as to clamp and assemble the barrier piece 9 with the casing 3. For example, the limiting clamping groove 39 can comprise an annular clamping groove, and an annular rib plate can be arranged on the inner wall of the casing 3, at least two annular rib plates are arranged in the extension direction of the power output shaft 214 of the motor 21, and an annular clamping groove is formed between adjacent two annular rib plates; and the casing connecting portion 91 is at least partially clamped in the annular clamping groove. In some embodiments, the casing 3 can also be provided with a clamping protrusion on the inner wall, and the casing connecting portion 91 is correspondingly provided with a clamping groove, and the clamping protrusion and the clamping groove are matched and clamped to clamp and match the casing connecting portion 91 with the casing 3. In this way, the barrier piece 9 can be quickly and detachably connected with the casing 3 and the motor 21, and the installation and disassembly are convenient, which is beneficial to maintenance and prolongs the service life of the motor 21.

[0099] In some embodiments, as shown in Figure 9 As shown, the barrier piece 9 comprises a corrugated structure 94 extending between the casing 3 and the motor outer wall 215, and the corrugated structure 94 is configured to at least buffer the vibration transmitted from the motor 21 to the casing 3 in the radial direction of the power output shaft 214 of the motor 21.

[0100] The corrugated structure 94 is a structure with an arc or wave shape in the radial cross section of the power output shaft 214. The corrugated structure 94 has a wave shape in the radial cross section of the power output shaft 214, that is, the corrugated structure 94 includes at least one wave peak part 941 and at least one wave valley part 942, and the wave peak part 941 is connected to the wave valley part 942. The radial cross section of the wave peak part 941 and the wave valley part 942 along the power output shaft 214 can include, but is not limited to, an arc shape, a triangular broken line, a square broken line, or a trapezoidal broken line, etc. The extension direction of the corrugated structure 94 can be arranged along the radial direction of the power output shaft 214, and a single-layer corrugated structure 94 can be formed; or the extension direction of the corrugated structure 94 can be arranged to intersect the radial direction of the power output shaft 214, so that the corrugated structure 94 is folded in the radial direction of the power output shaft 214, thereby forming a double-layer corrugated structure 94. In some embodiments, the corrugated structure 94 can be at least part of the middle extension part 93.

[0101] By arranging the corrugated structure 94 to buffer the vibration transmitted from the motor 21 to the machine shell 3, the vibration of the motor 21 transmitted to the machine shell 3 is further reduced, the vibration felt by the user is reduced, and the user experience is improved.

[0102] In addition, when the motor 21 vibrates or is displaced by external force, the barrier 9 will be pulled, so that the barrier 9 will be stretched. By arranging the corrugated structure 94, the corrugated structure 94 can be deformed, the stretchable range of the barrier 9 can be increased, the barrier 9 can be prevented from being damaged by excessive stretching, and the service life can be prolonged.

[0103] In some embodiments, as shown in Figure 11 The barrier 9 includes oppositely arranged inner barrier walls 95 and outer barrier walls 96, the inner barrier walls 95 and the outer barrier walls 96 are connected at one end, and a cavity is formed between the inner barrier walls 95 and the outer barrier walls 96; the other end of the inner barrier walls 95 is connected to the motor 21, and the other end of the outer barrier walls 96 is connected to the machine shell 3.

[0104] The radial cross section of the inner barrier wall 95 along the power output shaft 214 can include, but is not limited to, a straight line shape, an arc shape, or a wave shape. The radial cross section of the outer barrier wall 96 along the power output shaft 214 can include, but is not limited to, a straight line shape, an arc shape, or a wave shape.

[0105] In this way, the barrier 9 forms a double-layer structure, so that the barrier 9 can withstand greater deformation, the stretchable range of the barrier 9 is larger, and the barrier 9 can be further prevented from being damaged by excessive stretching. Moreover, the double-layer barrier 9 can better converge airflow, which is conducive to better guiding the airflow into the motor air inlet 211, thereby improving the air inlet efficiency and improving the heat dissipation performance of the motor 21.

[0106] In some embodiments, as shown inFigure 1 、 Figures 3 to 5 As shown in FIG. 1, the trimmer 100 extends along three orthogonal spatial directions, i.e., a length extension direction L, a width extension direction W, and a height extension direction H. The trimmer 100 further includes a main handle 311 provided on the housing 3 for a user to hold. In the height extension direction H, with one end of the housing 3 on which the main handle 311 is provided as the top and an end of the housing 3 away from the main handle 311 as the bottom. In the height extension direction H, the motor air inlet 211 is located on the upper side of the motor air outlet 212, and the housing air inlet 35 is located on the upper side of the housing air outlet 36.

[0107] When the trimmer 100 is in use, a user operates the trimmer 100 to perform trimming work. At this time, the length extension direction L of the trimmer 100 is the front-rear direction, and along the length extension direction L, the blade assembly 1 is located at the front side of the trimmer 100. The width extension direction W of the trimmer 100 is the left-right direction. The height extension direction H of the trimmer 100 is approximately the up-down direction. It can be understood that when the trimmer 100 is in use, the possibility of foreign matter being carried by the airflow on the lower side of the trimmer 100 is greater.

[0108] By arranging the motor air inlet 211 on the upper side of the motor air outlet 212 and the housing air inlet 35 on the upper side of the housing air outlet 36, when the trimmer 100 is in use, air can be taken in from the upper side of the trimmer 100 and air can be taken out from the lower side of the trimmer 100. This can reduce the inflow of unclean airflow into the motor 21, so that the intake airflow is cleaner, thereby reducing the entry of external impurities into the motor 21, which is conducive to improving the reliability of the motor 21 and prolonging the service life of the motor 21, and improving the user experience.

[0109] In some embodiments, in the use state of the trimmer 100, the motor air inlet 211 is located on the upper side of the motor air outlet 212. In this way, when the trimmer 100 is in use, air is taken in from the upper side and air is taken out from the lower side, which can reduce the inflow of unclean airflow into the motor 21, the intake airflow is cleaner, which can reduce the entry of external impurities into the motor 21, which is conducive to improving the reliability of the motor 21 and prolonging the service life of the motor 21.

[0110] In some embodiments, the extension direction of the power output shaft 214 of the motor 21 is parallel to the height extension direction H, and the motor air inlet 211 is arranged at the upper end of the motor 21. In some embodiments, the housing air inlet 35 can be provided with at least two, and the at least two housing air inlets 35 are arranged on opposite sides of the housing 3 along the width extension direction W. The housing air outlet 36 can also be provided with at least two, and the at least two housing air outlets 36 are arranged on opposite sides of the housing 3 along the width extension direction W.

[0111] Based on the same concept, the application also provides an electric tool. The electric tool comprises a housing 3, a working assembly, a motor 21 and a barrier 9. The housing 3 is provided with a housing air inlet 35 and a housing air outlet 36 which are independent of each other and are arranged separately. The working assembly is configured to perform a working task. The motor 21 is arranged in the housing 3 and provides driving force for the working assembly. The motor 21 comprises a motor air inlet 211, a motor air outlet 212 and an internal flow space 213 which is in communication with the motor air inlet 211 and the motor air outlet 212. The barrier 9 is arranged between the motor 21 and the housing 3, and the barrier 9 cooperates with the motor 21 to divide the inner cavity of the housing 3 into an air inlet area 37 and an air outlet area 38. The housing air inlet 35 and the motor air inlet 211 are in communication with the air inlet area 37, and the housing air outlet 36 and the motor air outlet 212 are in communication with the air outlet area 38. The motor 21 comprises a power output shaft 214 and a motor outer wall 215 which extends in the direction of the power output shaft 214, and a gap D2 is arranged between the motor outer wall 215 and the housing 3. The barrier 9 is configured to block the airflow from flowing from the air outlet area 38 to the air inlet area 37 through the gap D2 between the motor outer wall 215 and the housing 3.

[0112] The electric tool has the same beneficial effects as the pruning machine 100, and thus will not be described here.

[0113] In some embodiments, as shown in Figures 1 to 8 , Figure 12 and Figure 13 , Figure 12 is an enlarged structural schematic view of B in Figure 8 , and Figure 13 is a sectional view of C-C in Figure 7 . The pruning machine 100 extends along three orthogonal spatial directions, i.e., a length extension direction L, a width extension direction W and a height extension direction H. The pruning machine 100 comprises a blade assembly 1, a driving mechanism 2, a housing 3, a driving housing 4, a first supporting structure 5 and a second supporting structure 6. The blade assembly 1 is configured to perform a pruning task. The driving mechanism 2 is configured to drive the blade assembly 1. The housing 3 is provided with a holding portion 31. The driving housing 4 is configured to mount the driving mechanism 2, and the housing 3 and the driving housing 4 have a gap D1 therebetween. The first supporting structure 5 comprises a limiting mounting hole 51 which is arranged on one of the housing 3 and the driving housing 4 along the width extension direction W, and a supporting beam 52 which is arranged on the other one of the housing 3 and the driving housing 4 along the width extension direction W, the supporting beam 52 is arranged in the limiting mounting hole 51, and the limiting mounting hole 51 at least limits the movement of the supporting beam 52 in the height extension direction H. The second supporting structure 6 comprises at least one elastic supporting member 61 which is arranged in the gap between the housing 3 and the driving housing 4, the at least one elastic supporting member 61 is supported between the housing 3 and the driving housing 4 and at least limits the movement of the driving housing 4 relative to the housing 3 in the width extension direction W.

[0114] When the trimmer 100 is in use, a user holds the handle 31 to operate the trimmer 100 to perform a trimming operation. At this time, the handle 31 is located on the upper side of the trimmer 100 along the height extension direction H.

[0115] The drive mechanism 2 includes a motor 21 that drives the blade assembly 1 to reciprocate along the length extension direction L to perform a trimming operation.

[0116] The trimmer 100 generates vibrations when it is in operation. The vibrations are mainly generated by the movement of the blade assembly 1 and the drive mechanism 2. The higher the speed of the movement of the drive mechanism 2 and the higher the speed of the cutting movement of the blade assembly 1, the better the cutting effect, but the greater the vibrations generated. Among them, the amplitude of the vibrations generated by the trimmer 100 is the largest along the width extension direction W, the second largest along the length extension direction L, and the smallest along the height extension direction H. For example, the rotational speed of the drive mechanism 2 can range from 2200 revolutions per minute (r / min) to 2500 r / min, and the maximum amplitude of the trimmer 100 is 5 millimeters (mm).

[0117] The drive mechanism 2 is mounted to the drive housing 4. The blade assembly 1 can be arranged on the drive mechanism 2 or mounted to the drive housing 4, which is not limited herein. The blade assembly 1 and the drive mechanism 2 are the main vibration sources when the trimmer 100 is in operation, and the vibrations generated by the drive mechanism 2 and the blade assembly 1 are transmitted to the drive housing 4, so that the blade assembly 1, the drive mechanism 2, and the drive housing 4 are the vibration source parts of the trimmer 100.

[0118] The handle 31 is arranged on the machine housing 3, and the handle 31 can be held by a user when the trimmer 100 is in use. The machine housing 3 is the holding part of the trimmer 100. In some embodiments, the handle 31 can include a main handle 311 and a rear handle 312, which facilitates the user to hold the trimmer 100 with both hands to perform an operation.

[0119] The machine housing 3 can be provided with a limiting mounting hole 51, and the drive housing 4 is provided with a support beam 52; or the machine housing 3 is provided with a support beam 52, and the drive housing 4 is provided with a limiting mounting hole 51. The limiting mounting hole 51 is arranged to extend along the width extension direction W, and the support beam 52 is arranged to extend along the width extension direction W.

[0120] The support beam 52 is arranged in the limiting mounting hole 51, and the driving housing 4 and the casing 3 can be connected through the first support structure 5. The limiting mounting hole 51 at least limits the movement of the support beam 52 in the height extension direction H, that is, at least in the height extension direction H, the support beam 52 can abut against the inner wall of the limiting mounting hole 51, so that the first support structure 5 can at least provide a support force in the height extension direction H. In this way, in the height extension direction H, the driving housing 4 can be supported on the casing 3 through the first support structure 5, so as to achieve the suspension installation of the driving housing 4 on the casing 3, that is, the vibration source part of the pruning machine 100 is suspended and installed on the holding part, so as to achieve the split installation of the pruning machine 100.

[0121] After installation, as shown in Figure 6 and Figure 7 , there is a gap D1 between the driving housing 4 and the casing 3, and the driving housing 4 is movably arranged in the casing 3, so that the driving housing 4 is not in direct contact with the casing 3, which can reduce the direct transmission of vibration to the holding part 31 of the casing 3 and affect the user experience. In some embodiments, the casing 3 can provide a mounting space, and the driving housing 4 is at least partially accommodated in the casing 3.

[0122] Since the limiting mounting hole 51 at least limits the movement of the support beam 52 in the height extension direction H, the first support structure 5 can limit the movement of the driving housing 4 in the height extension direction H, limit the displacement amount of the driving housing 4 relative to the casing 3 in the height extension direction H, and further limit the displacement amount of the driving mechanism 2 in the height extension direction H. It can reduce the displacement amount of the blade assembly 1 driven by the driving mechanism 2 in the height extension direction H, and further reduce the shaking amount of the blade assembly 1 during cutting, which can reduce the influence of shaking on cutting precision during cutting, and is beneficial to improve the cutting quality.

[0123] The driving housing 4 is supported on the machine shell 3 in the width extension direction W by at least one elastic support 61. The elastic support 61 can be supported on one side of the driving housing 4, or can be supported on opposite sides of the driving housing 4, which is not limited herein. The elastic support 61 has elasticity, so that the second support structure 6 can provide an elastic support force in the width extension direction W. For example, the elastic support 61 can be made of an elastic material, for example, the elastic material can include but is not limited to rubber or thermoplastic elastomer (TPE), etc. In this way, in the width extension direction W, the driving housing 4 can be elastically supported on the machine shell 3 by the second support structure 6, and the transmission of vibration to the holding part 31 of the machine shell 3 can be further reduced. At the same time, since the elastic support 61 at least limits the movement of the driving housing 4 relative to the machine shell 3 in the width extension direction W, the displacement amount of the driving housing 4 relative to the machine shell 3 in the width extension direction W is limited, and the displacement amount of the driving mechanism 2 in the width extension direction W is limited, the displacement amount of the blade assembly 1 driven by the driving mechanism 2 in the width extension direction W can be reduced, the shaking amount of the blade assembly 1 during cutting can be further reduced, and the cutting quality can be further improved.

[0124] The pruning machine 100 of the embodiment has a vibration source part and a holding part arranged separately, and has a gap D1 between the driving housing 4 and the machine shell 3, so that the driving housing 4 is movably mounted on the machine shell 3, thereby suspending the vibration source part of the pruning machine 100 on the holding part, which can reduce the transmission of vibration to the holding part 31 of the machine shell 3, reduce the vibration felt by the user, and reduce the fatigue degree of the user during long-time operation. By arranging the first support structure 5, the driving housing 4 can be supported and limited in the height extension direction H to limit the movement of the driving housing 4 relative to the machine shell 3 in the height extension direction H; by arranging the second support structure 6, the driving housing 4 can be supported and limited in the width extension direction W to limit the movement of the driving housing 4 relative to the machine shell 3 in the width extension direction W; and the first support structure 5 and the second support structure 6 cooperate with each other to form a multi-point support and limiting structure between the driving housing 4 and the machine shell 3, which has higher support stability and reliability, effectively limits the movement of the driving housing 4 relative to the machine shell 3, and thereby reduces the displacement amount of the vibration of the driving housing 4. Since the displacement amount of the driving housing 4 is reduced, the displacement amount of the vibration of the driving mechanism 2 is reduced, and thereby the shaking amount of the blade assembly 1 during cutting is reduced, which can improve the problem of shaking during cutting caused by the suspension structure. Since the shaking amount of the blade assembly 1 is reduced, the influence of shaking during cutting on cutting accuracy can be reduced, which is beneficial to improve the cutting quality, and can also improve the cutting speed of the blade assembly 1, which is beneficial to improve the cutting effect. In this way, the pruning machine 100 can reduce the transmission of vibration to the holding part 31 while reducing the shaking during cutting, which is beneficial to meet the performance requirements of high cutting speed and low vibration at the same time, has better cutting effect, and improves the user experience.

[0125] In some embodiments, as shown in Figures 1 to 8 , Figure 12 and Figure 13 , the trimmer 100 extends along three orthogonal spatial directions, a length extension direction L, a width extension direction W, and a height extension direction H. The trimmer 100 comprises a blade assembly 1, a driving mechanism 2, a housing 3, a driving housing 4, and a first support structure 5. The blade assembly 1 is configured to perform a trimming task. The driving mechanism 2 is configured to drive the blade assembly 1. The housing 3 is provided with a holding portion 31. The driving housing 4 is configured to mount the driving mechanism 2, and the housing 3 and the driving housing 4 have a gap D1 therebetween. The first support structure 5 comprises a limiting mounting hole 51 provided on one of the housing 3 and the driving housing 4 along the width extension direction W, and a support beam 52 provided on the other of the housing 3 and the driving housing 4 along the width extension direction W, the support beam 52 being gapingly threaded in the limiting mounting hole 51, and the limiting mounting hole 51 at least limiting movement of the support beam 52 in the height extension direction H.

[0126] In this embodiment, the pruning machine 100 has a blade assembly 1, a drive mechanism 2, and a drive housing 4 as its vibration source, and a housing 3 as its gripping part, thus separating the pruning machine 100 into two parts. By providing a gap D1 between the drive housing 4 and the housing 3, the drive housing 4 is movably mounted on the housing 3, suspending the vibration source of the pruning machine 100 above the gripping part. This prevents direct contact between the drive housing 4 and the housing 3, reducing the direct transmission of vibration to the gripping part 31 of the housing 3, thus reducing the vibration felt by the user and decreasing fatigue during prolonged operation. The first support structure 5 provides support and limitation for the drive housing 4 in the height extension direction H, restricting its movement relative to the housing 3 in this direction and reducing the displacement of the drive housing 4 during vibration. This reduction in the displacement of the drive housing 4 reduces the displacement of the drive mechanism 2, thereby reducing the swaying of the blade assembly 1 during cutting and improving the swaying problem caused by the suspended structure. Because the amount of wobbling in the blade assembly 1 is reduced, the impact of wobbling on cutting accuracy during cutting is reduced, which is beneficial to improving cutting quality. It also increases the cutting speed of the blade assembly 1, further enhancing the cutting effect. By setting the support beam 52 of the first support structure 5 to be held in the limiting mounting hole 51 with a gap, the support beam 52 can move within the limiting mounting hole 51. The movement of the support beam 52 can buffer and dampen the drive housing 4, meaning the first support structure 5 also serves as a buffer and damping mechanism. This reduces the transmission of vibration from the drive housing 4 to the machine housing 3, further reducing vibration transmission to the grip 31. Thus, the pruning machine 100 can reduce vibration transmission to the grip 31 while simultaneously reducing wobbling during cutting, effectively meeting the performance requirements of both high cutting speed and low vibration, resulting in better cutting effects and an improved user experience.

[0127] In some embodiments, such as Figure 12 As shown, the gap d between the support beam 52 and the limiting mounting hole 51 is not less than 2 mm.

[0128] The gap d between the support beam 52 and the limiting mounting hole 51 refers to the gap d between the outer wall of the support beam 52 and the inner wall of the limiting mounting hole 51. By setting the gap d between the support beam 52 and the limiting mounting hole 51 to be not less than 2 mm, the movable amount of the support beam 52 in the limiting mounting hole 51 is greater than or equal to 2 mm. Since the first support structure 5 buffers the vibration of the driving shell 4 through the movement of the support beam 52 in the limiting mounting hole 51, when the amount of vibration of the driving shell 4 during the operation of the trimmer 100 does not exceed 2 mm, for example, the amplitude of the driving shell 4 can be within the range of 1.5 mm to 2 mm, at this time, the driving shell 4 can be effectively buffered and damped through the movement of the support beam 52, effectively reducing the vibration transmitted to the holding portion 31 of the machine shell 3, reducing the vibration felt by the user, and improving the user experience.

[0129] In some embodiments, as shown in Figures 2 to 5 、 Figure 7 and Figure 13 , the trimmer 100 further comprises an elastic damping member 7 arranged between the machine shell 3 and the driving shell 4, and the elastic damping member 7 is configured to inhibit the vibration generated by the driving shell 4 from being transmitted to the machine shell 3.

[0130] The elastic damping member 7 has elasticity, and by arranging the elastic damping member 7 between the driving shell 4 and the machine shell 3, the elasticity of the elastic damping member 7 can be used to buffer and damp the driving shell 4, thereby inhibiting the vibration of the driving shell 4 from being transmitted to the machine shell 3, further reducing the vibration transmitted to the holding portion 31 of the machine shell 3, reducing the vibration felt by the user, and improving the user experience.

[0131] In some embodiments, as shown in Figures 2 to 5 、 Figure 7 and Figure 13 , the trimmer 100 can include at least two elastic damping members 7 arranged on opposite sides of the driving shell 4 along the width extension direction W. In this way, the vibration can be inhibited from being transmitted to the machine shell 3 from the opposite sides of the driving shell 4, the buffering and damping effect is better, the vibration felt by the user is further reduced, and the user experience is improved.

[0132] In some embodiments, the elastic damping member 7 and the elastic support member 61 are different forms of elastic elements.

[0133] The elastic damping member 7 and the elastic support member 61 are different forms of elastic elements, which means that the material, structure, etc. of the elastic damping member 7 and the elastic support member 61 are different, and at least one of the elastic modulus, stiffness and damping ratio of the elastic damping member 7 and the elastic support member 61 is different, so that the elastic damping member 7 and the elastic support member 61 can respectively complete different functions. In this embodiment, the elastic damping member 7 mainly plays a role of elastic damping, and the elastic support member 61 mainly plays a role of elastic support.

[0134] By simultaneously setting different forms of elastic elements, the elastic damping and elastic support of the driving housing 4 can be simultaneously performed, the vibration and support problems can be simultaneously improved, the vibration is reduced while the shaking during cutting is reduced, the performance of high cutting speed and low vibration can be simultaneously met, the cutting effect is better, and the user experience is improved. Moreover, the first support structure 5 and the elastic support member 61 limit the displacement amount of the vibration of the driving housing 4, the elastic deformation range of the elastic damping member 7 can be reduced, and the service life of the elastic damping member 7 can be prolonged.

[0135] In some embodiments, the elastic damping member 7 is configured as a spring.

[0136] The spring is a mechanical part that works by using elasticity. The specific type of the spring is not limited here, for example, the spring can be but is not limited to a coil spring, a butterfly spring, a plate spring, etc. The manufacturing material of the spring can be but is not limited to spring steel, copper alloy, nickel alloy, and composite materials such as carbon fiber, etc. The spring has good buffering performance and can effectively absorb vibration and impact energy. In some embodiments, one end of the spring is connected to the driving housing 4, and the other end is connected to the machine case 3, so that the driving housing 4 is connected to the machine case 3 in a suspended manner.

[0137] In this way, the elastic damping member 7 has good buffering and damping performance, can effectively reduce the transmission of the vibration of the driving housing 4 to the holding part 31 of the machine case 3, reduce the vibration felt by the user, improve the user experience, and the spring structure is simple, and the manufacturing and use are convenient.

[0138] In some embodiments, the elastic damping member 7 can adopt a spring with a small elastic modulus, for example, the elastic modulus of the spring can be in the range of 2.5 Newton per millimeter (N / mm) to 6 N / mm. In this way, the stiffness of the spring is large, so that the elastic damping member 7 can provide a support force between the driving housing 4 and the machine case 3, which is beneficial to reduce the displacement amount of the vibration of the driving housing 4, further reduce the shaking amount of the blade assembly 1 during cutting, reduce the influence of the shaking during cutting on the cutting accuracy, and improve the cutting quality.

[0139] In some embodiments, the elastic support member 61 is configured as a rubber member.

[0140] The elastic support member 61 is made of rubber. Rubber is a high-elasticity polymer material with reversible deformation. By setting the elastic support member 61 as a rubber member, the elastic support member 61 has high elasticity and good support performance, which can effectively play a supporting and damping role.

[0141] In some embodiments, as shown in FIG. 2, the elastic damping member 7 is arranged between the driving housing 4 and the first support structure 5, and the elastic support member 61 is arranged between the first support structure 5 and the machine case 3. Figure 5As shown, the elastic support 61 can have a mating surface 611 in a substantially spherical shape. The second support structure 6 can further include a mounting groove 62 that mates with the elastic support 61. The mounting groove 62 can be provided on the casing 3 or the drive housing 4. The mounting groove 62 can have a shape that is adapted to the shape of the mating surface 611 of the elastic support 61. In this way, the elastic support 61 and the mounting groove 62 can cooperate to support and dampen vibrations in multiple directions. In some embodiments, the second support structure 6 can further include a mounting post 63 for mounting the rubber member. One of the mounting groove 62 and the mounting post 63 can be provided on the casing 3, and the other can be provided on the drive housing 4.

[0142] In some embodiments, as shown in FIG. 1, the support beam 52 and the limiting mounting hole 51 can have a cross-sectional shape that is substantially circular or elliptical. Figure 12

[0143] The cross section of the support beam 52 and the limiting mounting hole 51 refers to a cross section perpendicular to the width extension direction W. The cross-sectional shape of the support beam 52 can be the same as or different from the cross-sectional shape of the limiting mounting hole 51, which is not limited herein. For example, the cross-sectional shape of the support beam 52 and the cross-sectional shape of the limiting mounting hole 51 can both be circular or both be elliptical. Taking the cross-sectional shape of the support beam 52 as an example, the support beam 52 can be cylindrical, conical frustum-shaped, or spindle-shaped, which is not limited herein. In some embodiments, the inner diameter of the limiting mounting hole 51 is greater than the diameter of the support beam 52, so that there is a gap between the limiting mounting hole 51 and the support beam 52.

[0144] In this way, the support beam 52 and the limiting mounting hole 51 have a simple structure. In the state that the support beam 52 and the limiting mounting hole 51 are concentric, the size range of the gap between the support beam 52 and the limiting mounting hole 51 can be easily determined by setting the size relationship between the diameter of the support beam 52 and the inner diameter of the limiting mounting hole 51, which is simple and convenient to use.

[0145] In some embodiments, the support beam 52 is provided on the casing 3, and the limiting mounting hole 51 is provided on the drive housing 4.

[0146] In some embodiments, as shown in FIG. 1, the support beam 52 and the limiting mounting hole 51 can have a cross-sectional shape that is substantially circular or elliptical. Figure 3 Figure 5 and Figure 13 ​​As shown, the casing 3 can include a first half casing 32 and a second half casing 33. The support beam 52 can be a whole beam, one of the first half casing 32 and the second half casing 33 is fixedly connected with the support beam 52, and the other is provided with a connecting hole 34 corresponding to the support beam 52. The first half casing 32 and the second half casing 33 are detachably buckled and connected by cooperating and connecting the support beam 52 with the connecting hole 34. For example, the connecting hole 34 can be a screw hole, and the support beam 52 can be connected through a screw column and the connecting hole 34. When the casing 3 and the driving shell 4 are installed, the support beam 52 passes through the limiting installation hole 51 on the driving shell 4, the first half casing 32 and the second half casing 33 are buckled, and the support beam 52 is cooperatively connected with the connecting hole 34, so as to connect the casing 3 and the driving shell 4. The support beam 52 can also be two support short beams, which are respectively arranged on the first half casing 32 and the second half casing 33. When installed, the two support short beams are respectively inserted into the limiting installation hole 51 on the driving shell 4 and are butted, so as to buckle and connect the first half casing 32 and the second half casing 33. The support beam 52 can be integrally formed with the first half casing 32 and / or the second half casing 33, or can be a separate component, which is not specifically limited here. In some embodiments, the driving shell 4 is provided with a mounting portion 41 protruding in the height extension direction H, and the limiting installation hole 51 is provided on the mounting portion 41 in the width extension direction W. In this way, the installation of the casing 3 and the driving shell 4 is more simple and convenient.

[0147] In some embodiments, as shown in Figure 5 , at least two elastic supports 61 are arranged between the casing 3 and the driving shell 4, and the at least two elastic supports 61 are arranged on opposite sides of the driving shell 4 in the width extension direction W.

[0148] In this way, the at least two elastic supports 61 can provide support force to the opposite sides of the driving shell 4 in the width extension direction W, so that the first support structure 5 and the second support structure 6 cooperatively form at least three-point support limiting of the driving shell 4, and the stability and reliability of the support are higher, which is beneficial to further limit the displacement amount of the driving shell 4 relative to the casing 3, thereby reducing the shaking amount of the blade assembly 1 during cutting, reducing the influence of shaking on cutting precision during cutting, improving cutting quality, and improving cutting effect.

[0149] In some embodiments, the two elastic supports 61 on the opposite sides of the driving shell 4 in the width extension direction W are symmetrically arranged. In this way, the support force received by the driving shell 4 in the width extension direction W can be symmetrically distributed, further improving the stability of supporting the driving shell 4.

[0150] In some embodiments, as shown in Figure 3 , Figure 5 , and Figure 14 , Figure 14As shown in FIG. 1, the drive mechanism 2 includes a motor 21 and a transmission module 22 arranged in the length extension direction L of the drive housing 4. The motor 21 is in transmission connection with the blade assembly 1. In the length extension direction L of the drive housing 4, the drive housing 4 includes a front edge 42 close to the blade assembly 1 and a rear edge 43 away from the blade assembly 1. One of the first support structure 5 and the second support structure 6 is arranged close to the front edge 42 of the drive housing 4, and the other is arranged close to the rear edge 43 of the drive housing 4. The drive housing 4 has a length L2 in the length extension direction L. The distance L1 between the first support structure 5 and the second support structure 6 is greater than or equal to one third of the length L2 of the drive housing 4.

[0151] The transmission module 22 can include, but is not limited to, a speed reduction transmission device, etc. The motor 21 and the blade assembly 1 can be in transmission connection through the transmission module 22. When the drive mechanism 2 is installed in the drive housing 4, the motor 21 and the transmission module 22 are arranged in the length extension direction L of the drive housing 4. The front edge 42 of the drive housing 4 is close to the blade assembly 1, and the rear edge 43 of the drive housing 4 is away from the blade assembly 1, i.e. the transmission module 22 is close to the front edge 42 of the drive housing 4, and the motor 21 is close to the rear edge 43 of the drive housing 4. The motor 21 and the transmission module 22 are the two main vibration sources of the trimmer 100 during operation. Therefore, the drive housing 4 is provided with two support limiting areas in the length extension direction L, one of which is close to the front edge 42 of the drive housing 4, i.e. close to the transmission module 22; the other is close to the rear edge 43 of the drive housing 4, i.e. close to the motor 21.

[0152] The first support structure 5 can be arranged close to the front edge 42 of the drive housing 4, and the second support structure 6 can be arranged close to the front edge 42 of the drive housing 4. At this time, the first support structure 5 supports the support limiting area close to the front edge 42 of the drive housing 4, and the second support structure 6 supports the support limiting area close to the rear edge 43 of the drive housing 4. Alternatively, the first support structure 5 can be arranged close to the rear edge 43 of the drive housing 4, and the second support structure 6 can be arranged close to the front edge 42 of the drive housing 4. At this time, the first support structure 5 supports the support limiting area close to the rear edge 43 of the drive housing 4, and the second support structure 6 supports the support limiting area close to the front edge 42 of the drive housing 4. In this way, the first support structure 5 and the second support structure 6 support the two support limiting areas of the drive housing 4 respectively, so as to support and limit the two main vibration sources, which can improve the support and limitation effect of the drive housing 4, limit the displacement of the vibration of the drive housing 4, and further reduce the shaking amount of the blade assembly 1 during cutting.

[0153] The distance L1 between the first support structure 5 and the second support structure 6 refers to the distance between the mutually close sides of the support beam 52 and the elastic support 61 in the length extension direction L. It can be understood that the distance L1 between the first support structure 5 and the second support structure 6 is less than the length L2 of the driving housing 4. By setting the distance L1 between the first support structure 5 and the second support structure 6 to be greater than or equal to one third of the length L2 of the driving housing 4, the support force provided by the first support structure 5 and the second support structure 6 can be dispersedly arranged on the driving housing 4, the support limiting effect of the driving housing 4 can be improved, the support stability and reliability are better, which is beneficial to further limit the displacement amount of the driving housing 4 vibration, thereby reducing the shaking amount of the blade assembly 1 during cutting, reducing the influence of shaking on cutting precision during cutting, improving cutting quality, and improving cutting effect.

[0154] In some embodiments, as shown in Figure 14 , one of the elastic support 61 and the elastic damping member 7 is arranged close to the front edge 42 of the driving housing 4, and the other is arranged close to the rear edge 43 of the driving housing 4.

[0155] Corresponding to two main vibration sources, the driving housing 4 is further provided with two damping regions in the length extension direction L, one of which is close to the front edge 42 of the driving housing 4, and the other is close to the rear edge 43 of the driving housing 4. In some embodiments, the elastic damping member 7 can be arranged in the damping region close to the front edge 42, for example, the elastic damping member 7 can include a tension spring, and two tension springs are connected to opposite sides of the driving housing 4 in the width extension direction W. The elastic support 61 is arranged in the damping region close to the rear edge 43, for example, the elastic support 61 can include an elastic pad, and two elastic pads are respectively abutted to opposite sides of the driving housing 4 in the width extension direction W. In some embodiments, the damping region close to the front edge 42 is close to the main handle 311; and the damping region close to the rear edge 43 is close to the rear handle 312.

[0156] By arranging the damping and support limiting structures at the front edge 42 and the rear edge 43 of the driving housing 4 respectively, the whole machine damping requirement of the trimmer 100 can be met, and the displacement amount of the driving housing 4 vibration during the operation of the trimmer 100 is limited, the blade assembly 1 is effectively damped and shaken, the vibration is reduced, the cutting precision is affected, the performance of high cutting speed and low vibration is met at the same time, the cutting effect is better, and the user experience is improved.

[0157] In some embodiments, as shown in Figure 3 , Figure 5 and Figure 14As shown, the transmission module 22 comprises a speed reduction transmission assembly connected with the power output shaft 214 of the motor 21, for example, the speed reduction transmission assembly can comprise a gear box. The knife bar assembly 1 can comprise a knife bar 11, the rear end of the knife bar 11 is connected with the speed reduction transmission assembly, the motor 21 drives the knife bar 11 to reciprocate through the speed reduction transmission assembly to perform pruning work. In the height extension direction H, the elastic support 61 is supported on the region of the drive housing 4 close to the motor 21, which is beneficial to improve the support limiting effect of the drive housing 4.

[0158] In some embodiments, as shown in Figure 3 、 Figures 12 to 14 As shown, the trimmer 100 further comprises a vibration isolation sleeve 8 sleeved between the support beam 52 and the limiting installation hole 51. The vibration isolation sleeve 8 is at least partially made of elastic or flexible material. The vibration isolation sleeve 8 is configured to make the movable distance of the support beam 52 relative to the limiting installation hole 51 in the length extension direction L greater than the movable distance of the support beam 52 relative to the limiting installation hole 51 in the height extension direction H.

[0159] The vibration isolation sleeve 8 is arranged between the support beam 52 and the inner wall of the limiting installation hole 51, and the inner wall of the limiting installation hole 51 is supported on the support beam 52 through the vibration isolation sleeve 8. The vibration isolation sleeve 8 is at least partially made of elastic or flexible material, so that the vibration isolation sleeve 8 at least partially has elasticity or flexibility. For example, the elastic material can include but is not limited to rubber or thermoplastic elastomer (TPE) and the like. For example, the flexible material can include but is not limited to polyurethane (PU), acrylic resin and other high molecular materials with good bending plasticity. By arranging the vibration isolation sleeve 8 with elasticity or flexibility between the support beam 52 and the inner wall of the limiting installation hole 51, the vibration isolation sleeve 8 can play a role of elastic damping or buffering energy absorption, and can be used for vibration isolation to reduce the transmission of vibration of the drive housing 4 to the machine housing 3 through the support beam 52, thereby further reducing the transmission of vibration to the holding part 31, reducing the vibration felt by the user, reducing the fatigue degree of the user during long-time operation, and improving the user experience.

[0160] At the same time, by designing the structure and / or material of the vibration isolation sleeve 8, the movable distance of the support beam 52 relative to the limiting installation hole 51 in the length extension direction L can be made greater than the movable distance of the support beam 52 relative to the limiting installation hole 51 in the height extension direction H.

[0161] For example, in some embodiments, the vibration isolation sleeve 8 has an inner hole 81 passing through, and the vibration isolation sleeve 8 is movably sleeved on the support beam 52 through the inner hole 81, and the support beam 52 can move in the inner hole 81. The inner diameter of the inner hole 81 in the length extension direction L can be greater than the inner diameter in the height extension direction H, so as to realize that the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the length extension direction L is greater than the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the height extension direction H. In some embodiments, the vibration isolation sleeve 8 is in interference fit with the support beam 52 in the height extension direction H, so that the movable displacement of the support beam 52 relative to the vibration isolation sleeve 8 in the height extension direction H can be limited to zero.

[0162] In some embodiments, the vibration isolation sleeve 8 can be arranged to have a deformation amount in the length extension direction L greater than a deformation amount in the height extension direction H, and the support beam 52 is moved relative to the limiting mounting hole 51 through the deformation of the vibration isolation sleeve 8, so as to realize that the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the length extension direction L is greater than the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the height extension direction H.

[0163] Since the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the height extension direction H directly affects the displacement amount of the drive housing 4 relative to the cabinet 3 in the height extension direction H, by arranging the vibration isolation sleeve 8 to make the movable distance of the support beam 52 relative to the limiting mounting hole 51 in the height extension direction H smaller, the displacement amount of the drive housing 4 relative to the cabinet 3 in the height extension direction H can be limited while the vibration is reduced, which is beneficial to improve the damping effect while reducing the shaking amount of the blade assembly 1 during cutting, avoiding that the shaking amount is large during cutting to affect the cutting precision, which is beneficial to improve the cutting quality, and since the shaking amount of the blade assembly 1 is reduced, the cutting speed of the blade assembly 1 can be improved, which is beneficial to meet the performance requirements of high cutting speed and low vibration at the same time, improve the cutting effect, and improve the user experience.

[0164] In some embodiments, as shown in Figure 13 , Figure 15 and Figure 16 , Figure 15 is a schematic view of the three-dimensional structure of the vibration isolation sleeve 8 of some embodiments of the present application, Figure 16 is a schematic view of the three-dimensional structure of the vibration isolation sleeve 8 of some embodiments of the present application from another perspective. The vibration isolation sleeve 8 includes a lug portion 82 and a stop portion 83, the lug portion 82 and the stop portion 83 are connected in sequence along the axial direction of the inner hole 81, and the outer diameter of the stop portion 83 is greater than the outer diameter of the lug portion 82, so that the axial cross-sectional shape of the vibration isolation sleeve 8 is L-shaped. The lug portion 82 is arranged in the limiting mounting hole 51, and the stop portion 83 is located outside the limiting mounting hole 51 and abuts against the axial end face of the limiting mounting hole 51, so as to install the vibration isolation sleeve 8 in the limiting mounting hole 51.

[0165] In some embodiments, the stop portion 83 of the vibration isolation sleeve 8 can abut between the axial end faces of the limiting installation hole 51 and the casing 3 or the drive housing 4 in the width extension direction W. The stop portion 83 can play a vibration isolation role in the width extension direction W, further reducing the transmission of vibration to the holding portion 31 of the casing 3; the stop portion 83 can also provide a support force in the width extension direction W, limiting the relative displacement of the drive housing 4 and the casing 3 while isolating vibration, which is conducive to reducing the displacement of the drive mechanism 2, thereby reducing the amount of shaking of the blade assembly 1 during cutting, which can improve cutting quality and enhance user experience.

[0166] In some embodiments, the lug portion 82 is in interference fit with the limiting installation hole 51. The lug portion 82 can be embedded in the limiting installation hole 51 to interference fit the vibration isolation sleeve 8 to the limiting installation hole 51. In this way, the vibration isolation sleeve 8 is more stable when installed in the limiting installation hole 51 and is less likely to shake, which is conducive to reducing the amount of shaking of the blade assembly 1 during cutting and improving cutting quality.

[0167] In some embodiments, as shown in Figure 13 both axial ends of the limiting installation hole 51 are provided with a vibration isolation sleeve 8. The two vibration isolation sleeves 8 abut the axial end faces of the axial ends of the limiting installation hole 51, respectively. The support beam 52 passes through the two vibration isolation sleeves 8. In this way, the support force received by the support beam 52 is more dispersed, the support force provided by the first support structure 5 is more evenly distributed, and the support between the drive housing 4 and the casing 3 is more stable and reliable, which is conducive to further reducing the amount of shaking of the blade assembly 1 during cutting, improving cutting quality, and enhancing user experience.

[0168] In some embodiments, as shown in Figure 15 and Figure 16 The vibration isolation sleeve 8 further comprises an embedded piece 84, which is embedded in the inner hole 81 of the vibration isolation sleeve 8. The support beam 52 passes through the embedded piece 84, and there is a gap between the outer wall of the support beam 52 and the inner wall of the embedded piece 84. By providing the embedded piece 84, the support beam 52 is kept in the inner hole 81 of the vibration isolation sleeve 8 with a gap, which can further reduce the transmission of vibration to the casing 3 through the support beam 52, thereby reducing the transmission of vibration to the holding portion 31, which is conducive to enhancing user experience.

[0169] In some embodiments, as shown in Figures 1 to 5 The blade assembly 1 comprises a blade 11, the reciprocating speed of the blade 11 is greater than or equal to 5000spm (strokes per minute), and the vibration acceleration of the trimmer 100 is less than or equal to 2.5 m / s² (meters per second squared).

[0170] The blade 11 of the blade assembly 1 is driven to reciprocate by the driving mechanism 2 to perform the trimming operation, wherein the blade 11 performs the reciprocating cutting more than or equal to 5000 times per minute. In some embodiments, as shown in Figure 5 The blade 11 can include a pair of first blade 111 and second blade 112 stacked one above the other, and each of the first blade 111 and the second blade 112 can include a body portion extending along the length extension direction L and a blade tooth portion provided on the body portion for cutting the vegetation. The blade tooth portion can be provided in a plurality of numbers on opposite sides of the body portion along the width extension direction W, i.e. the blade tooth portion is provided on both opposite sides of the body portion. The blade tooth portion and the body portion can be integrally formed, for example. The first blade 111 and the second blade 112 are respectively drivingly connected with the driving mechanism 2, and the first blade 111 and the second blade 112 can be driven to reciprocate by the driving mechanism 2 to perform the cutting operation. In this way, the first blade 111 and the second blade 112 form double-action cutting, and the cutting efficiency is twice that of single-action cutting.

[0171] The vibration of the trimmer 100 is mainly caused by the movement of the driving mechanism 2 and the blade 11, and is mainly caused by the blade 11. The mass of the blade 11 affects the vibration frequency of the trimmer 100. In some embodiments, the amplitude of the trimmer 100 is maximally 5mm.

[0172] By setting the reciprocating speed range of the blade 11, the vibration acceleration of the trimmer 100 is controlled within a predetermined range, which is beneficial to reduce the vibration of the trimmer 100, reduce the vibration felt by the user, reduce the fatigue degree of the user when working for a long time, and improve the user experience.

[0173] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0174] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be construed as limiting the scope of the patent application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A pruner, characterized in that, The pruning machine comprises: a casing, the casing being provided with a casing air inlet and a casing air outlet which are independent of each other and are arranged at intervals; a cutter bar assembly configured to perform a work task; a motor arranged in the casing and configured to provide driving force for the cutter bar assembly, the motor comprising a motor air inlet, a motor air outlet, and an internal flow space which is in communication with the motor air inlet and the motor air outlet; a barrier arranged between the motor and the casing, the barrier being configured to divide an inner cavity of the casing into an air inlet area and an air outlet area, the casing air inlet and the motor air inlet being in communication with the air inlet area, and the casing air outlet and the motor air outlet being in communication with the air outlet area; the motor comprising a power output shaft and a motor outer wall which extends along the power output shaft, and a gap being arranged between the motor outer wall and the casing; the barrier being configured to block air flow from the air outlet area to the air inlet area through the gap between the motor outer wall and the casing.

2. The pruning machine according to claim 1, wherein the pruning machine is configured such that at least part of the air flow enters the air inlet area from the casing air inlet, then flows into the internal flow space from the motor air inlet, then flows out of the motor air outlet to the air outlet area, and finally flows to the outside of the casing from the casing air outlet.

3. The pruning machine according to claim 1, wherein the barrier is at least partially made of elastic or flexible material; or the barrier is at least partially made of hard material, and a gap is arranged between the barrier and the casing.

4. The pruning machine according to any one of claims 1 to 3, wherein the casing air inlet comprises a front end surface which is away from the casing air outlet and a rear end surface which is close to the casing air outlet along the extension direction of the power output shaft; the casing air outlet comprises a front end surface which is close to the casing air inlet and a rear end surface which is away from the casing air inlet along the extension direction of the power output shaft; and the barrier is arranged between the rear end surface of the casing air inlet and the front end surface of the casing air outlet.

5. The pruning machine according to claim 4, wherein the barrier is annular, and comprises: a casing connecting portion configured to mount the barrier to the casing; a motor connecting portion configured to mount the barrier to the motor; and an intermediate extension portion which extends between the casing connecting portion and the motor connecting portion.

6. The pruning machine according to claim 5, wherein the motor connecting portion comprises a motor engaging end surface which is configured to engage with the motor and is close to an end surface of the intermediate extension portion; and in the extension direction of the power output shaft of the motor, the distance between the motor engaging end surface and the motor air inlet is smaller than the distance between the motor engaging end surface and the motor air outlet. And / or, the casing connecting portion comprises a casing joint end face configured to be jointed with the casing and close to an end face of the intermediate extension portion; in the extension direction of the power output shaft of the motor, the distance between the casing joint end face and the casing air inlet is smaller than the distance between the casing joint end face and the casing air outlet.

7. The trimmer of claim 6, wherein, The barrier comprises a corrugated structure extending between the casing and the motor outer wall, the corrugated structure being configured to buffer the vibration transmitted from the motor to the casing at least in the radial direction of the power output shaft of the motor.

8. The trimmer of claim 7, wherein, The barrier comprises oppositely arranged inner and outer barrier walls connected at one end and forming a cavity therebetween, the other end of the inner barrier wall being connected to the motor, and the other end of the outer barrier wall being connected to the casing.

9. The trimmer of any one of claims 1 to 3, wherein, The trimmer extends along three orthogonal spatial directions of length extension direction L, width extension direction W, and height extension direction H; The trimmer further comprises a main handle provided on the casing for a user to hold, and in the height extension direction H, with the end of the casing where the main handle is provided as the top and the end of the casing away from the main handle as the bottom; In the height extension direction H, the motor air inlet is located on the upper side of the motor air outlet, and the casing air inlet is located on the upper side of the casing air outlet.

10. An electric power tool characterized by comprising: Comprise: a casing, the casing being provided with a casing air inlet and a casing air outlet which are independently arranged and spaced apart; a working assembly configured to perform a work task; a motor provided in the casing to provide driving force for the working assembly; the motor comprises a motor air inlet, a motor air outlet, and an internal flow space communicating the motor air inlet and the motor air outlet; a barrier provided between the motor and the casing, the barrier cooperating with the motor to divide the internal cavity of the casing into an air inlet region and an air outlet region, the casing air inlet and the motor air inlet being in communication with the air inlet region, and the casing air outlet and the motor air outlet being in communication with the air outlet region; the motor comprises a power output shaft and a motor outer wall extending in the direction of the power output shaft, and a gap is provided between the motor outer wall and the casing; the barrier is configured to block the airflow from the air outlet region to the air inlet region via the gap between the motor outer wall and the casing.

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