Pruning machine

Abstract

The utility model belongs to the technical field of gardening tools, and particularly relates to a pruning machine which comprises a machine frame and a transmission gear box, a control circuit and a driving motor used for driving the transmission gear box are arranged in the machine frame, a supporting plate, a first blade and a second blade are arranged on the front portion of the transmission gear box, and a transmission gear is arranged in the transmission gear box. The rack comprises a connecting base, the connecting base extends towards the front side to form a grip, a control switch electrically connected with the control circuit is arranged on the grip, the grip extends towards the transmission gear box to form a connecting column, the connecting column and the connecting base are detachably connected with the front portion and the rear portion of the upper end of the transmission gear box respectively, and a grabbing and lying groove is formed between the grip and the transmission gear box. The utility model aims to provide the trimmer which is simple in structure and low in production cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to garden tool technical field, especially relate to a trimmer. BACKGROUND

[0002] The trimmer, also called a hedge trimmer or a tea picker, is a machine specially used for trimming hedges, lawn edges and other greening projects, and is suitable for trimming equipment of various types of hedges and lawn edges.

[0003] The market trimmer shell mostly covers the motor and transmission gear box, and the blade of the trimmer is worn out from the shell. For example, the light multipurpose electric trimmer disclosed in Chinese utility model patent CN 202120606146.6 includes a motor, a power transmission mechanism, a blade holder and a blade, and is characterized in that: the power transmission mechanism is composed of an upper aluminum shell, upper bearings, upper friction plates, a power pinion, upper connecting rods, an eccentric gear, lower connecting rods, lower friction plates, lower bearings and a lower aluminum shell. The upper and lower bearings are respectively embedded into the upper and lower aluminum shells, the upper and lower friction plates are respectively fixed to the upper and lower aluminum shells, the upper and lower center shafts of the eccentric gear are respectively inserted into the upper and lower bearings, the power pinion is fixed to the motor power shaft and passes through the through hole of the upper aluminum shell, the power pinion is engaged with the outer teeth of the eccentric gear, the large diameter holes of the upper and lower connecting rods are respectively sleeved on the eccentric wheels above and below the eccentric gear, and the upper and lower aluminum shells are fixed together, and the small diameter holes of the upper and lower connecting rods are respectively sleeved on the upper and lower blades.

[0004] In the above structure, the power transmission mechanism is covered by the left and right plastic shells, which can improve the appearance of the trimmer. However, the lower parts of the left and right plastic shells are prone to be scratched and damaged during use, which affects the normal use of the trimmer. In addition, the structure requires positioning walls in the left and right plastic shells to match the upper and lower aluminum shells, which makes the structure of the left and right plastic shells more complex and increases the production cost. SUMMARY

[0005] In order to overcome the defects in the prior art, the utility model aims to provide a trimmer with simple structure and low production cost.

[0006] The utility model aims to achieve the following effects:

[0007] The utility model provides a trimmer, including frame and transmission gear box, be provided with control circuit and the drive motor for driving transmission gear box in frame, transmission gear box front part is provided with support plate, first blade and second blade, transmission gear box is provided with transmission gear, the frame includes connecting seat, connecting seat extends to the forward side and forms the handle, the handle is provided with control switch with control circuit electricity connection, the handle extends to transmission gear box and forms the connecting column, the connecting column and connecting seat are detachable with the front and rear of transmission gear box upper end respectively, and the handle and transmission gear box form the grab groove.

[0008] The utility model further sets up: the frame includes left casing and right casing of detachable connection, transmission gear box is provided with installation protruding, installation protruding passes between left casing and right casing, and left casing and right casing abut on installation protruding both sides respectively.

[0009] The utility model further sets up: installation protruding is provided with connecting groove, and left casing and right casing are provided with installation hole, left casing is provided with connecting protruding, connecting protruding is provided with installation hole in it, and one side of connecting protruding is provided with step portion, and right casing is provided with abutting wall, connecting protruding is arranged in connecting groove, and first fastener passes through installation hole and connecting groove and controls left casing and right casing relative fixed, and drives installation protruding to abut on step portion through abutting wall.

[0010] The utility model further sets up: left casing is provided with at least two groups of connecting protruding, and transmission gear box is provided with connecting groove corresponding to each connecting protruding respectively, and a plurality of groups of connecting protruding and connecting groove cooperate to make the frame and transmission gear box positioning connection.

[0011] The utility model further sets up: left casing and right casing are provided with installation cavity and motor cavity, and installation cavity and motor cavity communicate with each other, and drive motor is fixedly arranged on transmission gear box and passes into motor cavity, and air inlet is arranged on the side wall of installation cavity, and the inboard of air inlet is provided with a baffle, and the side wall of motor cavity is provided with air outlet, and the rotating shaft of control motor is provided with fan blade, and fan blade drives external air to enter the frame through air inlet and is discharged through air outlet.

[0012] The utility model further sets up: the upper side of handle front part is provided with the knob for adjusting the rotating speed of drive motor, and the front side of knob is provided with display screen, and knob and display screen are electrically connected with control circuit respectively.

[0013] The utility model further sets up: transmission gear box includes the upper shell and lower shell of detachable connection, the upper shell and lower shell form drive cavity between, drive cavity is provided with eccentric block and two groups transmission connecting rod, drive motor passes through transmission gear and eccentric block drive transmission connecting rod movement, and drives first blade and second blade through transmission connecting rod respectively, the one end of support plate, first blade and second blade all are equipped with in drive cavity, and drive cavity is fixed with first guide block, first blade and second blade all are equipped with first guide groove, first guide groove is equipped with in drive cavity and cooperates with first guide block, first blade and second blade exposed part is equipped with second guide groove, support plate is equipped with with second guide groove adaptation second guide block.

[0014] The utility model further sets up: transmission gear both sides all are equipped with eccentric block, eccentric block is rotatively connected with transmission connecting rod respectively, drive cavity is provided with sliding gasket, sliding gasket sets up between transmission connecting rod and upper shell or lower shell.

[0015] The utility model further sets up: drive motor is fixed with connecting disc, connecting disc and transmission gear box are detachable connection, and connecting disc is equipped with positioning convex, transmission gear box is equipped with with positioning convex adaptation positioning hole, and connecting disc is equipped with bearing, and drive motor's output shaft passes through bearing and is connected with transmission gear.

[0016] The utility model further sets up: the connecting column both sides respectively extend and form the connecting foot, and fastener passes through respectively through connecting foot and is detachable with transmission gear box.

[0017] The utility model has the advantages compared with prior art:

[0018] 1, the utility model discloses in the process using of trimmer, and the lower end is easy to knock and scrape, and because transmission gear box sets up below the frame, and transmission gear box mostly is made of metal material, and the lower end of trimmer is not easy to damage in the process using, avoid the sundries to enter trimmer, be favorable to prolong the service life of trimmer, and the structure in transmission gear box sets up outside the frame, only needs the lower end of frame and transmission gear box adaptation can, be favorable to simplify the structure of frame, and reduce the volume of frame, be favorable to reduce the production cost of trimmer, and the production and processing of frame are convenient, and because connecting column and connecting seat are detachable with the front and rear of transmission gear box upper end respectively, be favorable to the stable connection of frame and transmission gear box, and make connecting column and connecting seat form grab groove between, convenient for user to use.

[0019] 2. The setting of the mounting protrusions in the present invention facilitates the stable installation of the frame and the transmission gear box, avoids the transmission gear box from shaking to the sides of the frame during use, and is convenient for users to use; the setting of the connecting protrusions and the connecting grooves facilitates the stable installation of the frame and the transmission gear box. When disassembling the frame and the transmission gear box, the left shell and the right shell need to be disassembled first. Since the user will grasp the left shell and the right shell during use, the frame and the transmission gear box will not be accidentally separated during use, which is convenient for users to use and helps to improve the safety of the trimmer.

[0020] 3. The provision of at least two groups of connecting protrusions and connecting grooves in the present invention facilitates the positioning connection between the frame and the transmission gear box, and is beneficial to improving the stability of the installation of the frame and the transmission gear box, avoiding damage to the connection position between the frame and the transmission gear box during use; the provision of fan blades, air inlets and air outlets facilitates cooling of the trimmer during use, avoiding overheating of the trimmer after long-term use, and since a block is provided on the inside of the air inlet, it is beneficial to reduce the entry of debris into the outer casing, avoiding overheating and damage to the trimmer.

[0021] 4. The dial button arranged on the upper front side of the handle in the present invention allows the user to flexibly adjust the speed of the drive motor, and the display screen arranged on the front side of the dial button allows the user to observe the status of the trimmer in real time, making it convenient for the user to use; the first guide block in the drive chamber is close to the connection position between the transmission connecting rod and the first blade or the second blade, which is conducive to the stable sliding of the first blade and the second blade, avoiding deflection or shaking of the first blade and the second blade during use, and is conducive to extending the service life of the trimmer; the setting of the sliding gasket is conducive to reducing the friction of the transmission connecting rod during use, which is conducive to reducing the wear of the trimmer and extending the service life of the trimmer.

[0022] 5. The setting of the connecting plate in the present invention facilitates the positioning connection between the drive motor and the transmission gear box, and since the bearing is provided on the connecting plate, it is conducive to the stable installation of the output shaft of the drive motor, reduces the deflection and shaking of the output shaft of the drive motor, and is conducive to reducing the energy consumption of the drive motor; the setting of the connecting foot can prevent the connecting column from swinging to the sides of the transmission gear box, which is conducive to the stable installation of the frame and the transmission gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the partial structure of the utility model after the right shell is removed;

[0025] Figure 3 It is an explosion diagram of the utility model;

[0026] Figure 4 It is a structural diagram of the left housing in the utility model;

[0027] Figure 5 Fig. 2 is a structural schematic view of the right shell in the utility model;

[0028] Figure 6 Fig. 3 is a sectional view of the connection structure of the driving motor and the transmission gear box in the utility model;

[0029] Figure 7 Fig. 4 is a structural schematic view of the upper shell in the utility model;

[0030] Figure 8 Fig. 5 is a structural schematic view of the support plate in the utility model;

[0031] Figure 9 Fig. 6 is a structural schematic view of the first blade in the utility model;

[0032] Figure 10 Fig. 7 is a structural schematic view of the driving motor in the utility model.

[0033] Fig. 1 is a structural schematic view of the utility model, and the specific meaning of the figure mark is as follows: 1 is a rack; 11 is a connecting seat; 12 is a handle; 13 is a connecting column; 14 is a left shell; 15 is a right shell; 16 is a mounting cavity; 17 is a motor cavity; 111 is a mounting hole; 131 is a connecting foot; 141 is a connecting protrusion; 142 is a step part; 151 is a abutting wall; 161 is an air inlet hole; 162 is a stop block; 171 is an air outlet;

[0034] 2 is a transmission gear box; 21 is an upper shell; 22 is a lower shell; 23 is a transmission gear; 24 is a transmission connecting rod; 25 is a sliding gasket; 211 is a mounting protrusion; 212 is a connecting groove; 213 is a positioning hole; 3 is a support plate; 31 is a first blade;

[0035] 32 is a second blade; 33 is a second guide block; 34 is a first guide block; 311 is a first guide groove;

[0036] 312 is a second guide groove; 4 is a driving motor; 41 is a connecting disc; 42 is a positioning protrusion; 43 is a bearing; 44 is a fan blade; 45 is an output shaft; 5 is a control circuit; 51 is a control switch; 52 is a knob; 53 is a display screen. DETAILED DESCRIPTION

[0037] The utility model will be further described in combination with the drawings and specific embodiments:

[0038] Reference Figures 1 to 10As shown, a trimmer, comprising a rack 1 and a transmission gear box 2, the rack 1 is provided with a control circuit 5 and a driving motor 4 for driving the transmission gear box 2, the transmission gear box 2 is provided with a support plate 3, a first blade 31 and a second blade 32 in the front part, and the transmission gear box 2 is provided with a transmission gear 23, the rack 1 comprises a connecting seat 11, the connecting seat 11 extends to the front side to form a handle 12, the handle 12 is provided with a control switch 51 electrically connected with the control circuit 5, the handle 12 extends to the transmission gear box 2 to form a connecting column 13, the connecting column 13 and the connecting seat 11 are respectively detachably connected with the front part and the rear part of the upper end of the transmission gear box 2, and a grab groove is formed between the handle 12 and the transmission gear box 2, the lower end of the trimmer is easy to knock and scratch during use, in the structure, the transmission gear box 2 is arranged below the rack 1, and the transmission gear box 2 is mostly made of metal material, so that the lower end of the trimmer is not easy to be damaged during use, the debris is prevented from entering the trimmer, the service life of the trimmer is prolonged, the structure of the rack 1 is simplified, the volume of the rack 1 is reduced, the production cost of the trimmer is reduced, the production and processing of the rack 1 are facilitated, and the user is facilitated to use.

[0039] Since no other parts need to be installed in the connecting column 13, the cross section of the connecting column 13 is mostly small, so that the connecting column 13 is extended to form a connecting leg 131 on both sides in the utility model, the fastener passes through the connecting leg 131 and is detachably connected with the transmission gear box 2, the connecting leg 131 is arranged to avoid the swinging of the connecting column 13 to both sides of the transmission gear box 2, and the stability of the installation of the rack 1 and the transmission gear box 2 is facilitated.

[0040] The rack 1 comprises a left shell 14 and a right shell 15 which are detachably connected, the transmission gear box 2 is provided with a mounting protrusion 211, the mounting protrusion 211 penetrates between the left shell 14 and the right shell 15, the left shell 14 and the right shell 15 are respectively abutted on both sides of the mounting protrusion 211, the mounting protrusion 211 is arranged to facilitate the stable installation of the rack 1 and the transmission gear box 2, avoid the swinging of the transmission gear box 2 to both sides of the rack 1 during use, and facilitate the user to use.

[0041] The utility model discloses mounting protrusion 211 is provided with connecting groove 212, left casing 14 and right casing 15 right casing 15 all are provided with mounting hole 111, left casing 14 is provided with connecting protrusion 141, and connecting protrusion 141 is provided with mounting hole 111, and connecting protrusion 141 one side is provided with step portion 142, and right casing 15 is provided with abutting wall 151, and connecting protrusion 141 is arranged in connecting groove 212, and first fastener passes through mounting hole 111 and connecting groove 212 control left casing 14 and right casing 15 relative fixed, and drive mounting protrusion 211 abutting on step portion 142 through abutting wall 151, and the setting of connecting protrusion 141 and connecting groove 212 is convenient for the stable installation of rack 1 and transmission gear box 2, and when rack 1 and transmission gear box 2 are disassembled, left casing 14 and right casing 15 need to be disassembled first, and because the user will grip left casing 14 and right casing 15 in the use process, rack 1 and transmission gear box 2 will not accidentally separate during use, which is convenient for the user to use, and is favorable for improving the safety of trimmer.

[0042] Preferably, the left casing 14 is provided with at least two groups of connecting protrusions 141, and the transmission gear box 2 is provided with connecting grooves 212 corresponding to each connecting protrusion 141. The multiple groups of connecting protrusions 141 and connecting grooves 212 cooperate to position and connect the rack 1 and the transmission gear box 2. The at least two groups of connecting protrusions 141 and connecting grooves 212 facilitate the positioning and connection of the rack 1 and the transmission gear box 2, and are beneficial to improve the stability of the installation of the rack 1 and the transmission gear box 2, avoiding damage to the connection position of the rack 1 and the transmission gear box 2 during use. The transmission gear box 2 is provided with three mounting protrusions 211, and two mounting protrusions 211 are arranged in the connecting seat 11. The two mounting protrusions 211 are respectively provided with connecting grooves 212. The connecting seat 11 is respectively provided with connecting protrusions 141 adapted to the two connecting grooves 212. One mounting protrusion 211 is arranged in the connecting column 13 and located between the left casing 14 and the right casing 15.

[0043] The left casing 14 and the right casing 15 are provided with an installation cavity 16 and a motor cavity 17. The installation cavity 16 and the motor cavity 17 are in communication. The driving motor 4 is fixedly arranged on the transmission gear box 2 and penetrates into the motor cavity 17. The installation cavity 16 is provided with an air inlet hole 161 on the side wall. The air inlet hole 161 is provided with a stop block 162 on the inner side. The motor cavity 17 is provided with an air outlet 171 on the side wall. The driving shaft of the control motor is provided with a fan blade 44. The fan blade 44 drives the external air to enter the rack 1 through the air inlet, and is discharged through the air outlet 171. The fan blade 44, the air inlet, and the air outlet 171 facilitate the cooling of the trimmer during use, avoiding overheating of the trimmer after long-term use. The stop block 162 arranged on the inner side of the air inlet hole 161 is beneficial to reduce the entry of sundries into the shell, avoiding overheating damage of the trimmer.

[0044] The utility model discloses a knob 52 for adjusting the rotating speed of the driving motor 4 is arranged on the upper side of the front part of the handle 12, a display screen 53 is arranged on the front side of the knob 52, the knob 52 and the display screen 53 are electrically connected with the control circuit 5 respectively, the knob 52 arranged on the upper side of the front part of the handle 12 is convenient for the user to adjust the rotating speed of the driving motor 4 flexibly, and the display screen 53 arranged on the front side of the knob 52 is convenient for the user to observe the state of the trimmer in real time, which is convenient for the user to use.

[0045] The transmission gear box 2 includes detachably connected upper shell 21 and lower shell 22, the driving cavity is formed between the upper shell 21 and the lower shell 22, the eccentric block and two groups of transmission connecting rods 24 are arranged in the driving cavity, the driving motor 4 drives the transmission connecting rod 24 to move through the transmission gear 23 and the eccentric block, and drives the first blade 31 and the second blade 32 through the transmission connecting rod 24 respectively, one end of the support plate 3, the first blade 31 and the second blade 32 are all arranged in the driving cavity, and the first guide block 34 is fixedly arranged in the driving cavity, the first guide groove 311 is arranged on the first blade 31 and the second blade 32, and the first guide groove 311 is arranged in the driving cavity and is matched with the first guide block 34, the second guide groove 312 is arranged on the part of the first blade 31 and the second blade 32 exposed outside, and the second guide block 33 matched with the second guide groove 312 is arranged on the support plate 3, since the first guide block 34 in the driving cavity is close to the connecting position of the transmission connecting rod 24 and the first blade 31 or the second blade 32, the stable sliding of the first blade 31 and the second blade 32 is facilitated, the transmission between the two and the first blade 31 and the second blade 32 is avoided to be too large in the use process, the first blade 31 and the second blade 32 are prevented from being deviated or shaken, and the service life of the trimmer is prolonged.

[0046] In the embodiment, the transmission gear 23 is provided with eccentric blocks on both sides, and the transmission connecting rods 24 are rotatably connected to the eccentric blocks, respectively, the sliding gasket 25 is arranged in the driving cavity and between the transmission connecting rod 24 and the upper shell 21 or the lower shell 22, and the sliding gasket 25 is arranged in the driving cavity and between the transmission connecting rod 24 and the upper shell 21 or the lower shell 22, and the sliding gasket 25 is arranged in the driving cavity and between the transmission connecting rod 24 and the upper shell 21 or the lower shell 22.

[0047] The connecting disc 41 is fixedly arranged on the driving motor 4, the connecting disc 41 is detachably connected with the transmission gear box 2, the positioning protrusion 42 is arranged on the connecting disc 41, the positioning hole 213 matched with the positioning protrusion 42 is arranged on the transmission gear box 2, the bearing 43 is arranged on the connecting disc 41, the output shaft 45 of the driving motor 4 passes through the bearing 43 and is connected with the transmission gear 23, the connecting disc 41 is arranged to facilitate the positioning connection of the driving motor 4 and the transmission gear box 2, the bearing 43 is arranged on the connecting disc 41, the stable installation of the output shaft 45 of the driving motor 4 is facilitated, the deflection and shaking of the output shaft 45 of the driving motor 4 are reduced, and the energy consumption of the driving motor 4 is reduced.

[0048] The above embodiments are only preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A trimmer comprising a frame (1) and a transmission gear box (2), a control circuit (5) and a driving motor (4) for driving the transmission gear box (2) are arranged in the frame (1), a support plate (3), a first blade (31) and a second blade (32) are arranged at the front of the transmission gear box (2), a transmission gear (23) is arranged in the transmission gear box (2), characterized in that: The rack (1) comprises a connecting seat (11) extending to the front side to form a handle (12), the handle (12) is provided with a control switch (51) electrically connected with the control circuit (5), the handle (12) extends to the transmission gear box (2) to form a connecting column (13), the connecting column (13) and the connecting seat (11) are respectively detachably connected with the front and rear parts of the upper end of the transmission gear box (2), and a grabber groove is formed between the handle (12) and the transmission gear box (2).

2. A trimmer according to claim 1, characterised in that: The rack (1) comprises a left shell (14) and a right shell (15) detachably connected, the transmission gear box (2) is provided with a mounting protrusion (211) penetrating between the left shell (14) and the right shell (15), and the left shell (14) and the right shell (15) are respectively abutted on both sides of the mounting protrusion (211).

3. A trimmer according to claim 2, characterised in that: The mounting protrusion (211) is provided with a connecting groove (212), the left shell (14) and the right shell (15) are both provided with a mounting hole (111), the left shell (14) is provided with a connecting protrusion (141) provided with a mounting hole (111), one side of the connecting protrusion (141) is provided with a stepped portion (142), the right shell (15) is provided with an abutting wall (151), the connecting protrusion (141) penetrates in the connecting groove (212), a first fastener passes through the mounting hole (111) and the connecting groove (212) to control the relative fixation of the left shell (14) and the right shell (15), and the abutting wall (151) drives the mounting protrusion (211) to abut on the stepped portion (142).

4. A trimmer according to claim 3, characterised in that: The left shell (14) is provided with at least two groups of connecting protrusions (141), the transmission gear box (2) is provided with connecting grooves (212) corresponding to the connecting protrusions (141) respectively, and the multiple groups of connecting protrusions (141) and the connecting grooves (212) cooperate to positionally connect the rack (1) and the transmission gear box (2).

5. A trimmer according to claim 2, wherein: The left shell (14) and the right shell (15) are provided with a mounting cavity (16) and a motor cavity (17), the mounting cavity (16) and the motor cavity (17) are in communication with each other, a driving motor (4) is fixedly arranged on the transmission gear box (2) and penetrates in the motor cavity (17), the side wall of the mounting cavity (16) is provided with an air inlet hole (161), the inner side of the air inlet hole (161) is provided with a stop block (162), the side wall of the motor cavity (17) is provided with an air outlet (171), a fan blade (44) is arranged on the rotating shaft of the control motor, the fan blade (44) drives external air to enter the rack (1) through the air inlet, and is discharged through the air outlet (171).

6. A trimmer according to claim 1, characterized in that: The front upper side of the handle (12) is provided with a knob (52) for adjusting the rotating speed of the driving motor (4), the front side of the knob (52) is provided with a display screen (53), and the knob (52) and the display screen (53) are respectively electrically connected with the control circuit (5).

7. A trimmer according to claim 1, characterized in that: The transmission gear box (2) comprises a detachable upper shell (21) and lower shell (22), the driving cavity is formed between the upper shell (21) and the lower shell (22), the eccentric block and two groups of transmission connecting rods (24) are arranged in the driving cavity, the driving motor (4) drives the transmission connecting rod (24) to move through the transmission gear (23) and the eccentric block, and drives the first blade (31) and the second blade (32) through the transmission connecting rod (24), one end of the support plate (3), the first blade (31) and the second blade (32) is arranged in the driving cavity, and the first guide block (34) is fixedly arranged in the driving cavity, the first guide groove (311) is arranged on the first blade (31) and the second blade (32), the first guide groove (311) is arranged in the driving cavity and matched with the first guide block (34), the second guide groove (312) is arranged on the exposed part of the first blade (31) and the second blade (32), and the second guide block (33) matched with the second guide groove (312) is arranged on the support plate (3).

8. A trimmer according to claim 7, characterised in that: The transmission gear (23) is provided with eccentric blocks on both sides, the transmission connecting rods (24) are rotatably connected to the eccentric blocks, the sliding gasket (25) is arranged in the driving cavity, and the sliding gasket (25) is arranged between the transmission connecting rod (24) and the upper shell (21) or the lower shell (22).

9. A trimmer according to claim 1, characterized in that: The driving motor (4) is fixedly provided with the connecting disc (41), the connecting disc (41) is detachably connected with the transmission gear box (2), the connecting disc (41) is provided with the positioning protrusion (42), the transmission gear box (2) is provided with the positioning hole (213) matched with the positioning protrusion (42), and the connecting disc (41) is provided with the bearing (43), the output shaft (45) of the driving motor (4) passes through the bearing (43) and is connected with the transmission gear (23).

10. A trimmer according to claim 1, characterized in that: The connecting column (13) is extended to form the connecting foot (131) on both sides, and the fastener passes through the connecting foot (131) and is detachably connected with the transmission gear box (2).

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