A thin-walled motor component axial connection structure and method

Abstract

The present invention relates to the technical field of thin-walled motors, and specifically discloses an axial connection structure and method for thin-walled motor components, including a body and a vibration reduction assembly, wherein the body is provided with a rear cover, a connection assembly, a dustproof assembly and a cooling assembly, wherein the rear cover is detachably connected to the rear end of the body, and the vibration reduction assembly is fixedly connected to the bottom of the body; the connection assembly includes a first baffle, a second baffle, a bolt and a rotor, wherein the outer peripheral edge of the first baffle is provided with a plurality of radial through holes, and the body is provided with a first matching hole corresponding to the radial through hole of the first baffle, wherein the first baffle is fixedly connected to the rear end of the body through the radial through hole, the first matching hole and a pin, and the second baffle is provided with a plurality of axial through holes. The present invention can achieve axial impact resistance, high impact resistance, timely cooling of the body, improving heat dissipation efficiency, preventing motor overheating, and extending motor life, and at the same time, lateral and vertical vibration reduction of the body is performed, thereby enhancing the vibration reduction effect and reducing the noise of the motor when it is working.

Description

Technical Field

[0001] The present invention relates to the technical field of thin-wall motors, and in particular to an axial connection structure and method for thin-wall motor components. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy through the principle of electromagnetic induction. Its main components include a stator and a rotor. Motors can be divided into three categories according to their power: large, medium, small, and micro. Thin-walled motors are motors designed with thinner walls. They are mainly used in applications that require weight and space. They are widely used in power tools, home appliances, micro robots, and other fields.

[0003] The existing technology still has the following areas for improvement: currently, most of the small and medium-sized thin-walled motors are fixed with radial screws, but the radial screw connection itself is not resistant to axial impact, and is easily damaged when the motor is subjected to external impact or load, and has weak impact resistance. Thin-walled motors have limited heat dissipation area, which may cause motor overheating, resulting in increased motor losses and shortened motor service life. When the motor is working, the vibration problem and the noise problem caused by the motor vibration are serious. The current vibration reduction methods are mostly only aimed at vertical vibration reduction, and cannot take into account both vertical and lateral vibration reduction at the same time, and the vibration reduction and noise reduction effect is weak. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides an axial connection structure and method for thin-walled motor components, which can achieve axial impact resistance and high impact resistance, can cool down the machine body in time, improve heat dissipation efficiency, prevent motor overheating, and extend the life of the motor, and at the same time, perform lateral and vertical vibration reduction on the machine body, enhance the vibration reduction effect, and reduce the noise when the motor is working.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A thin-walled motor component axial connection structure comprises a body and a vibration reduction assembly, wherein the body is provided with a rear cover, a connection assembly, a dustproof assembly and a cooling assembly, the rear cover is detachably connected to the rear end of the body, and the vibration reduction assembly is fixedly connected to the bottom of the body;

[0007] The connecting assembly includes a first baffle, a second baffle, bolts and a rotor, a plurality of radial through holes are formed on the outer peripheral edge of the first baffle, a first matching hole corresponding to the radial through hole of the first baffle is formed on the body, the first baffle is fixedly connected to the rear end of the body through the radial through hole, the first matching hole and a pin, a plurality of axial through holes are formed on the second baffle, a plurality of second matching holes corresponding to the axial through holes of the second baffle are formed on the first baffle, a plurality of bolts are provided, the second baffle is detachably connected to the first baffle through the axial through hole, the second matching hole and the bolts, and the rotor is rotatably connected to the body;

[0008] The dustproof component includes a filter, a vent and a guide cover, wherein a plurality of vents are provided, and the plurality of vents are opened at the front end of the body and the second baffle, and two filter screens are provided, and the two filter screens are detachably connected to the vents of the body and the second baffle, respectively, and the guide cover is detachably connected to the second baffle;

[0009] The cooling assembly includes a liquid inlet pipe, a liquid outlet pipe, a heat dissipation cover, a fan and a pipe, wherein the liquid inlet pipe is fixedly connected to the front end of the heat dissipation cover, the liquid outlet pipe is fixedly connected to the rear end of the heat dissipation cover, the fan is sleeved on the tail end of the rotor, and a plurality of pipes are provided, and the plurality of pipes are arranged inside the heat dissipation cover;

[0010] The vibration reduction assembly includes a first support plate and a vibration reduction frame, wherein a support column, a first limit block, a tension spring, a damper, a second support plate and a second limit block are arranged inside the vibration reduction frame, wherein the support column is fixedly connected between the first support plate and the second support plate, and a plurality of first limit blocks are arranged, and the plurality of first limit blocks are respectively fixedly connected at the end points inside the vibration reduction frame.

[0011] Preferably, the second support plate is arranged in a double-arrow shape, and the position of the arrow segment of the second support plate corresponds to the position of the first limit block.

[0012] Preferably, a second limit block is provided on both the arrow section of the second support plate and the first limit block, and both ends of the damper are rotatably connected between the second limit block of the arrow section of the second support plate and the second limit block on the first limit block.

[0013] Preferably, the tension spring is fixedly connected between the arrowhead segment of the second support plate and the first limiting block.

[0014] Preferably, the first baffle is located inside the body, and the second baffle is located inside the back cover.

[0015] Preferably, the first baffle is arranged in a circular ring shape, a through hole is opened in the middle of the second baffle, a through hole is opened in the middle of the front end of the body, and the rotor passes through the through holes of the first baffle, the second baffle and the body.

[0016] Preferably, the deflector is arranged in a pot shape, a protruding section is arranged inside the deflector, and a mounting hole is opened on the protruding section inside the deflector.

[0017] Preferably, a fixing hole is formed on the second baffle, and the fixing hole matches the mounting hole.

[0018] Preferably, the air guide cover is arranged outside the fan.

[0019] A method for axially connecting a thin-walled motor component, the method is as follows:

[0020] S1: Install the cooling assembly on the machine body and install the filter at the vent at the front end of the machine body;

[0021] S2: Install the first baffle plate at the rear end stop of the machine body. After installation, the first baffle plate is locked to the machine body by matching the pin, the first matching hole and the radial through hole.

[0022] S3: Install the rotor, and then install the second baffle, align the axial through hole of the second baffle with the second matching hole of the first baffle, axially connect and lock the second baffle with the first baffle by bolts, and install the filter at the vent hole of the second baffle;

[0023] S4: Install the fan at the rear end of the rotor, align the mounting hole of the air deflector with the fixing hole of the second baffle, and install the air deflector on the second baffle;

[0024] S5: Install the back cover onto the body.

[0025] S6: Install the machine body installed in S5 on the vibration reduction assembly.

[0026] The beneficial effects of the present invention are:

[0027] (1) By setting up the connection assembly, the technical effect that can be achieved is that the second baffle is detachably connected to the first baffle by a plurality of bolts. The bolts are arranged axially, and a plurality of bolts are arranged to disperse the impact force, so that the second baffle can withstand a large axial impact. The axial impact force can also improve the tightness of the connection between the first baffle and the second baffle, and the impact resistance is high. The rear cover can be detachably connected to the rear end of the body, which is convenient for inspection and maintenance of the internal structure. The first baffle is provided with a plurality of second matching holes corresponding to the axial through holes of the second baffle, which is convenient for positioning the second baffle.

[0028] (2) By setting up the dustproof component, the technical effect that can be achieved is that the two filters can be detachably connected to the air vents of the body and the second baffle respectively to prevent large particles from entering the body and affecting the operation of the body. The air guide cover can be detachably connected to the second baffle to guide the direction of the air flow, which is convenient for disassembly and maintenance.

[0029] (3) By setting up a cooling component, the technical effect that can be achieved is that the cooling component and the main component work closely together, which can cool down the motor in time, improve the heat dissipation efficiency, prevent the motor from overheating, and extend the life of the motor. Multiple pipes are set inside the heat dissipation cover to facilitate the input of more coolant and distribute it evenly, thereby improving the overall heat dissipation efficiency of the motor.

[0030] (4) The technical effect that can be achieved through the cooperation of the fan and the vent is that the air flow can flow smoothly inside the machine body, thereby improving the heat dissipation efficiency. The rotor drives the fan to rotate forward and reversely. In conjunction with the filter, it can not only prevent impurities from entering the machine body, but also discharge impurities blocked by the filter through reverse rotation. The fan only needs to be disassembled for cleaning and maintenance, which reduces the frequency of filter replacement and saves production costs.

[0031] (5) Through the cooperation between the air deflector and the fan, the technical effect that can be achieved is that a mounting hole is opened on the protruding section inside the air deflector, and a fixing hole is opened on the second baffle. The fixing hole matches the mounting hole, which facilitates the positioning of the air deflector on the second baffle and facilitates disassembly and maintenance. The air deflector is arranged outside the fan to guide the direction of the airflow and prevent impurities on the filter from splashing into the rear cover due to the rotation of the fan, which facilitates cleaning and maintenance.

[0032] (6) By setting up a vibration reduction component, the technical effect that can be achieved is to switch the oblique positive and negative stiffness back and forth to support the motor connected to the vibration reduction component, so that the motor absorbs and alleviates vibration through the vibration reduction component, while achieving lateral and vertical vibration reduction, enhancing the vibration reduction effect, and reducing the noise when the motor is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0034] Figure 1 is a three-dimensional diagram of the motor in the present invention;

[0035] Figure 2 A three-dimensional diagram of the internal structure of the rear cover in the present invention;

[0036] Figure 3 This is a front view of the internal structure of the rear cover in the present invention;

[0037] Figure 4 It is a cross-sectional view of the pipeline in the present invention;

[0038] Figure 5This is a structural diagram of the first baffle in the present invention;

[0039] Figure 6 This is a structural diagram of the second baffle in the present invention;

[0040] Figure 7 It is the overall assembly diagram of the present invention;

[0041] Figure 8 is a cross-sectional view of the vibration reduction assembly in the present invention;

[0042] Fig. 9 A three-dimensional diagram of the internal structure of the vibration-damping frame of the present invention;

[0043] Fig.10 A structural diagram of the damper and the second limit block in the present invention;

[0044] Description of main component symbols:

[0045] In the figure: 1. first baffle; 2. second baffle; 3. body; 4. filter; 5. vent; 6. liquid inlet pipe; 7. liquid outlet pipe; 8. back cover; 9. heat dissipation cover; 10. fan; 11. air guide cover; 12. bolts; 13. rotor; 14. mounting hole; 15. pipeline; 16. radial through hole; 17. axial through hole; 18. first matching hole; 19. second matching hole; 20. first support plate; 21. vibration damping frame; 22. support column; 23. first limit block; 24. tension spring; 25. damper; 26. second support plate; 27. second limit block. DETAILED DESCRIPTION

[0046] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" etc. is based on the orientation or position described in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0048] Reference Figures 1 to 10The present invention discloses an axial connection structure of thin-walled motor components, including a body 3 and a vibration reduction assembly. The body 3 is provided with a rear cover 8, a connection assembly, a dustproof assembly and a cooling assembly. The rear cover 8 is detachably connected to the rear end of the body 3, which is convenient for inspection and maintenance of the internal structure. The vibration reduction assembly is fixedly connected to the bottom of the body 3; the cooling assembly cooperates closely with the main assembly, can cool down the motor in time, improve the heat dissipation efficiency, prevent the motor from overheating, and extend the life of the motor;

[0049] The connecting assembly includes a first baffle 1, a second baffle 2, a bolt 12 and a rotor 13. The outer edge of the first baffle 1 is provided with a plurality of radial through holes 16. The body 3 is provided with a first matching hole 18 corresponding to the radial through hole 16 of the first baffle 1. The first baffle 1 is fixedly connected to the rear end of the body 3 through the radial through hole 16, the first matching hole 18 and the pin. The second baffle 2 is provided with a plurality of axial through holes 17. The first baffle 1 is provided with a plurality of second matching holes 19 corresponding to the axial through holes 17 of the second baffle 2, which is convenient for positioning the second baffle 2. A plurality of bolts 12 are provided. The second baffle 2 is detachably connected to the first baffle 1 through the axial through holes 17, the second matching holes 19 and the bolts 12. The bolts 12 are axially arranged, and a plurality of bolts 12 are provided to disperse the impact force, which can withstand large axial impact. The axial impact force can also improve the tightness of the connection between the first baffle 1 and the second baffle 2, and the impact resistance is high. The rotor 13 is rotatably connected to the body 3.

[0050] The dustproof component includes a filter 4, a vent 5 and a guide cover 11. A plurality of vents 5 are provided, and the plurality of vents 5 are opened on the front end of the body 3 and the second baffle 2. Two filter screens 4 are provided, and the two filter screens 4 are detachably connected to the vents 5 of the body 3 and the second baffle 2, respectively, to prevent large particles from entering the body 3 and affecting the work of the body 3. The guide cover 11 is detachably connected to the second baffle 2 to guide the airflow direction, which is convenient for disassembly and maintenance;

[0051] The cooling assembly includes a liquid inlet pipe 6, a liquid outlet pipe 7, a heat dissipation cover 9, a fan 10 and a pipe 15. The liquid inlet pipe 6 is fixedly connected to the front end of the heat dissipation cover 9, the liquid outlet pipe 7 is fixedly connected to the rear end of the heat dissipation cover 9, the fan 10 is sleeved on the tail end of the rotor 13, and a plurality of pipes 15 are provided. The plurality of pipes 15 are arranged inside the heat dissipation cover 9, so as to facilitate the input of more coolant and distribute it evenly, thereby improving the overall heat dissipation efficiency of the motor and preventing the motor from overheating.

[0052] The fan 10 and the vent 5 cooperate to allow the airflow to flow smoothly inside the body 3, thereby improving the heat dissipation efficiency. The rotor 13 drives the fan 10 to rotate forward and reversely, and cooperates with the filter 4 to prevent impurities from entering the body 3, and can also discharge impurities blocked by the filter 4 through reverse rotation. It is only necessary to disassemble the fan 10 for cleaning and maintenance, thereby reducing the replacement frequency of the filter 4 and saving production costs.

[0053] The vibration reduction assembly includes a first support plate 20 and a vibration reduction frame 21. A support column 22, a first limit block 23, a tension spring 24, a damper 25, a second support plate 26 and a second limit block 27 are arranged inside the vibration reduction frame 21. The support column 22 is fixedly connected between the first support plate 20 and the second support plate 26. A plurality of first limit blocks 23 are arranged, and the plurality of first limit blocks 23 are respectively fixedly connected at the end points inside the vibration reduction frame 21.

[0054] Reference Figure 8 and Fig. 9 The second support plate 26 is arranged in a double-arrow shape, and the position of the arrow section of the second support plate 26 corresponds to the position of the first limit block 23; the second support plate 26 arrow section and the first limit block 23 are both provided with a second limit block 27, and the two ends of the damper 25 are rotatably connected between the second limit block 27 of the arrow section of the second support plate 26 and the second limit block 27 on the first limit block 23; the tension spring 24 is fixedly connected between the arrow section of the second support plate 26 and the first limit block 23, and the first limit block 23, the tension spring 24, the damper 25, the second limit block 27 and the second support plate 26 cooperate to switch the oblique positive and negative stiffness back and forth to support the motor connected to the vibration reduction assembly, so that the motor absorbs and alleviates vibration through the vibration reduction assembly, and at the same time achieves lateral and vertical vibration reduction, enhances the vibration reduction effect, and reduces the noise when the motor is working.

[0055] Reference Figures 2 to 6 The first baffle plate 1 is located inside the body 3, and the second baffle plate 2 is located inside the back cover 8; the first baffle plate 1 is arranged in a circular ring shape, a through hole is opened in the middle of the second baffle plate 2, a through hole is opened in the middle of the front end of the body 3, and the rotor 13 passes through the through holes of the first baffle plate 1, the second baffle plate 2 and the body 3.

[0056] Reference Figure 2 , Figure 3 and Figure 6 The air deflector 11 is arranged in a pot shape, a protruding section is arranged inside the air deflector 11, and a mounting hole 14 is opened on the protruding section inside the air deflector 11; a fixing hole is opened on the second baffle 2, and the fixing hole matches the mounting hole 14, so that the air deflector 11 can be positioned on the second baffle 2 and disassembled and maintained conveniently; the air deflector 11 is arranged outside the fan 10, so as to guide the airflow direction and prevent impurities on the filter 4 from splashing into the rear cover 8 due to the rotation of the fan 10, so as to facilitate cleaning and maintenance.

[0057] Reference Figures 1 to 10 , the present invention discloses a method for an axial connection structure of a thin-walled motor component, the method is as follows:

[0058] S1: Install the cooling assembly on the body 3, and install the filter 4 at the vent 5 at the front end of the body 3;

[0059] S2: Install the first baffle 1 at the rear end stop of the body 3. After installation, the first baffle 1 is locked with the body 3 by matching the pin, the first matching hole 18 and the radial through hole 16.

[0060] S3: Install the rotor 13, and then install the second baffle 2, align the axial through hole 17 of the second baffle 2 with the second matching hole 19 of the first baffle 1, axially connect and lock the second baffle 2 with the first baffle 1 through the bolt 12, and install the filter 4 at the vent hole 5 of the second baffle 2;

[0061] S4: Install the fan 10 at the rear end of the rotor 13, align the mounting hole 14 of the air deflector 11 with the fixing hole of the second baffle 2, and install the air deflector 11 on the second baffle 2;

[0062] S5: Install the rear cover 8 on the body 3;

[0063] S6: Install the machine body 3 installed in S5 on the vibration reduction assembly.

[0064] The working principle and use process of the present invention are as follows: the motor is started, the rotor 13 rotates to drive the fan 10 to rotate and dissipate heat. When subjected to axial impact force, the force is transmitted to the second baffle plate 2 through the rear cover 8. The second baffle plate 2 and the first baffle plate 1 are more closely matched through the axially connected bolts 12, thereby ensuring the firmness and tightness of the motor connection.

[0065] The coolant is transported to the plurality of pipes 15 through the liquid inlet pipe 6 to cool the machine body 3 as a whole, and the coolant is output through the liquid outlet pipe 7 .

[0066] When the motor is working, the first limit block 23, the tension spring 24, the damper 25, the second limit block 27 and the second support plate 26 cooperate to switch the oblique positive and negative stiffness back and forth to support the motor connected to the vibration reduction assembly, so that the motor absorbs and relieves vibration through the vibration reduction assembly.

[0067] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A thin-walled motor component axial connection structure, characterized in that: It comprises a machine body (3) and a vibration reduction assembly, wherein the machine body (3) is provided with a rear cover (8), a connection assembly, a dust prevention assembly and a cooling assembly, the rear cover (8) is detachably connected to the rear end of the machine body (3), and the vibration reduction assembly is fixedly connected to the bottom of the machine body (3); The connecting assembly comprises a first baffle (1), a second baffle (2), bolts (12) and a rotor (13); a plurality of radial through holes (16) are formed on the outer peripheral edge of the first baffle (1); a first matching hole (18) corresponding to the radial through hole (16) of the first baffle (1) is formed on the machine body (3); the first baffle (1) is fixedly connected to the rear end of the machine body (3) through the matching of the radial through hole (16), the first matching hole (18) and the pin; The dustproof component comprises a filter (4), a vent (5) and a guide cover (11), wherein a plurality of vents (5) are provided, and the plurality of vents (5) are provided at the front end of the body (3) and on the second baffle (2), the guide cover (11) is arranged in a pot shape, a protruding section is provided inside the guide cover (11), a mounting hole (14) is provided on the protruding section inside the guide cover (11), a fixing hole is provided on the second baffle (2), the fixing hole matches the mounting hole (14), and the guide cover (11) is arranged outside the fan (10); The cooling assembly comprises a liquid inlet pipe (6), a liquid outlet pipe (7), a heat dissipation cover (9), a fan (10) and a pipe (15), wherein the liquid inlet pipe (6) is fixedly connected to the front end of the heat dissipation cover (9), and the liquid outlet pipe (7) is fixedly connected to the rear end of the heat dissipation cover (9); The vibration reduction assembly comprises a first support plate (20) and a vibration reduction frame (21); a support column (22), a first limit block (23), a tension spring (24), a damper (25), a second support plate (26) and a second limit block (27) are arranged inside the vibration reduction frame (21); the support column (22) is fixedly connected between the first support plate (20) and the second support plate (26); a plurality of first limit blocks (23) in the vibration reduction assembly are arranged; the plurality of first limit blocks (23) are respectively fixedly connected at end points inside the vibration reduction frame (21); and the second support plate (26) is fixedly connected to the first support plate (20) and the second support plate (26). The plate (26) is arranged in a double-arrow shape, the position of the arrow section of the second support plate (26) corresponds to the position of the first limit block (23), the arrow section of the second support plate (26) and the first limit block (23) are both provided with a second limit block (27), the two ends of the damper (25) are rotatably connected between the second limit block (27) of the arrow section of the second support plate (26) and the second limit block (27) on the first limit block (23), and the tension spring (24) is fixedly connected between the arrow section of the second support plate (26) and the first limit block (23).

2. The thin-walled motor component axial connection structure according to claim 1, characterized in that: The second baffle plate (2) in the dustproof assembly is provided with a plurality of axial through holes (17); the first baffle plate (1) is provided with a plurality of second matching holes (19) corresponding to the axial through holes (17) of the second baffle plate (2); a plurality of bolts (12) are provided; the second baffle plate (2) is detachably connected to the first baffle plate (1) via the axial through holes (17), the second matching holes (19) and the bolts (12); the rotor (13) is rotatably connected to the machine body (3); the first baffle plate (1) is located inside the machine body (3); and the second baffle plate (2) is located inside the rear cover (8).

3. The thin-walled motor component axial connection structure according to claim 1, characterized in that: Two filter screens (4) are provided, and the two filter screens (4) are detachably connected to the body (3) and the vent hole (5) of the second baffle (2), respectively; the air deflector (11) is detachably connected to the second baffle (2); the first baffle (1) is arranged in a circular ring shape, a through hole is provided in the middle of the second baffle (2), a through hole is provided in the middle of the front end of the body (3), and the rotor (13) passes through the through holes of the first baffle (1), the second baffle (2) and the body (3).

4. The thin-walled motor component axial connection structure according to claim 1, characterized in that: The fan (10) in the cooling assembly is sleeved on the rear end of the rotor (13), a plurality of the pipes (15) are provided, and the plurality of the pipes (15) are provided inside the heat dissipation cover (9).

5. A method for an axial connection structure of a thin-walled motor component, applied to an axial connection structure of a thin-walled motor component according to any one of claims 1 to 4, characterized in that: The method is as follows: S1: Install the cooling assembly on the machine body (3), and install the filter (4) at the vent hole (5) at the front end of the machine body (3); S2: Install the first baffle (1) at the rear end stop of the machine body (3), and after installation, lock the first baffle (1) and the machine body (3) by engaging the pin, the first matching hole (18) and the radial through hole (16); S3: installing the rotor (13), and after the installation, installing the second baffle (2), aligning the axial through hole (17) of the second baffle (2) with the second matching hole (19) of the first baffle (1), axially connecting and locking the second baffle (2) and the first baffle (1) with bolts (12), and installing the filter (4) at the vent hole (5) of the second baffle (2); S4: installing the fan (10) at the rear end of the rotor (13), aligning the mounting hole (14) of the air guide cover (11) with the fixing hole of the second baffle (2), and installing the air guide cover (11) on the second baffle (2); S5: Install the rear cover (8) on the machine body (3); S6: Install the machine body (3) installed in S5 on the vibration reduction assembly.

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