Brake end cover structure of servo motor and wiring installation method

By using the staircase end cover port and multi -layer brakes to install the convex blocks and/or cut tanks in the brake end cover structure of the servo motor to solve the adaptation of different specifications of motors and brakes, improve the bearings, and improve the bearings. Life also enhances the protection and strength of the motor.

CN119341256APending Publication Date: 2025-01-21SUZHOU LEGO MOTORS CO LTD
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Patent Information

Application Number
CN202411734436.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-01-21

AI Technical Summary

Technical Problem

The brake end cap structure of existing servo motors is difficult to adapt to motors and brakes of different specifications and brands, resulting in inconsistent materials, degraded performance, increased sealing risk, and heat transfer problems during electrical connections, affecting the life of the bearing.

Method used

Design a brake end cover structure of a servo motor, using a stepped end cover port and multi -layer brakes to install the convex block and/or cut slot on the convex deconure to achieve different specifications and the adaptation of the brakes. Reduce the contact area of ​​the brake flange and end cover structure, increase thermal resistance, and avoid directly transmitting heat to the bearings.

Benefits of technology

The general adaptation of different specifications of motors and brakes of different specifications, reducing the risk of uniform material and decline in performance, increased the service life of the bearings, and enhanced electrical protection and mechanical strength.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

A braking end cover structure of a servo motor is characterized in that the end cover structure is respectively connected with a base and a brake protective cover on two sides, an end cover wire outlet communicated with an inner cavity of the base is radially arranged on the circumferential surface of the end cover structure, the end cover wire outlet is step-shaped, and the inner diameters of steps are gradually reduced from an inlet to an outlet; at least one brake wire outlet communicated with the brake protection cover is axially formed in the end cover wire outlet; a plurality of bosses are arranged on the end face, located on the brake side, of the end cover structure and distributed in an umbrella shape with the axis of the end cover structure as the circle center, and a plurality of protruding blocks and / or cutting grooves used for radially positioning the brake are sequentially arranged on the surface, facing the brake, of each boss in the radial direction of the boss. Through the design of the large-area outgoing line mounting platform, the design of the stepped end cover outgoing line opening and the design of the protruding blocks and / or the cutting grooves on the multi-layer brake mounting boss, the end cover can adapt to leads, connectors and brakes of different specifications, and the universality requirement of the end cover is met.
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Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a brake end cover structure of a servo motor and a wiring installation method. Background Art

[0002] With the diversification of working conditions, servo motors need to be equipped with brakes of different specifications and brands, and electrical interfaces of different specifications and brands, while ensuring the motors' waterproof, dustproof, and vibration-proof (electrical protection, mechanical strength) requirements, as well as the company's material standardization requirements. Therefore, the following issues arise: 1. According to the different electrical parameters and interfaces of the motor (customer requirements), connectors of different specifications and shapes need to be configured, so multiple sets of end covers need to be derived or transition plates 8 need to be added for transfer (see Figure 2 ), resulting in material inconsistency or performance degradation (increased risk of sealing).

[0003] 2. According to the different torque of the motor (customer needs), different specifications and brands of brakes need to be configured. Due to the different installation ports and installation holes, multiple sets of end cover molds are derived, resulting in inconsistent materials or too much processing allowance. The brake flange surface is in direct contact with the end cover. The heat generated by emergency braking can be quickly transferred to the bearing, which may have an adverse effect on the bearing life.

[0004] 3. Due to the customer's electrical interface definition requirements, the main power cable and the brake cable are defined on the same electrical connector. The outer diameter of the motor stator punching is smaller than the outer diameter of the brake, and it is difficult to lead the lead from the large outer diameter to the small outer diameter position (see Figure 1 , Figure 2 ), unless external wiring is used, but this brings new problems in protection, and it is necessary to pass through the end cover and then pass through the machine base, which brings protection problems and inconvenient operation process; or pass from a small inner diameter to a large inner diameter, but the main power cable has a large current and a large wire diameter, and there is brake dust on the brake side, and the brake flange is also prone to heat due to friction, which leads to difficulties in dust protection, reduced lead current carrying capacity (due to heat), and process operation.

[0005] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention. Summary of the invention

[0006] The purpose of the invention is to provide a brake end cover structure of a servo motor and a wiring installation method.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: A first aspect of the present invention provides a brake end cover structure of a servo motor, which is respectively connected to a machine base and a brake protective cover on both sides, and a radial end cover outlet connected to an inner cavity of the machine base is provided on a circumferential surface of the end cover structure, the end cover outlet is stepped and the inner diameter of each step decreases step by step from the inlet to the outlet, and at least one brake outlet connected to the brake protective cover is axially provided in the end cover outlet.

[0008] By adding a radial end cap outlet to the end cap structure and providing an axial brake outlet inside the end cap outlet, the electrical connection problem of small stator outer diameter and large brake outer diameter can be achieved. The stepped end cap outlet can be used for lead wires of different specifications to pass through and can be connected to connectors of different specifications.

[0009] The end cover structure is provided with a plurality of bosses on an end face located on the brake side, and the plurality of bosses are distributed in an umbrella shape with the axis of the end cover structure as the center of the circle, and the surface of each boss facing the brake is provided with a plurality of protrusions and / or grooves in sequence along its radial direction for radially positioning the brake, and the vertical surface of the protrusion and / or groove is matched with the stopper on the edge of the brake flange, and the radial inner plane of the protrusion and / or groove is in contact with the brake flange.

[0010] By setting the above-mentioned boss, the contact area between the brake flange and the end cover structure is reduced, the thermal resistance is increased, and the heat generated by frequent braking can be effectively prevented from being directly transferred to the bearing, thereby increasing the service life of the bearing.

[0011] A plurality of protrusions and / or grooves are arranged on the boss, which is suitable for radial positioning and installation of brakes of different specifications.

[0012] Preferably, the end cover outlet has at least two annular step surfaces, the treads of the annular step surfaces are inclined surfaces with rounded corners, so that the rounded corners of the incoming wire are smooth, which can provide reliable protection for the lead insulation of connectors of different specifications and avoid electrical failures caused by long-term wear of the lead insulation.

[0013] Preferably, a sealing ring is fixedly provided in the brake wire outlet, which can isolate the brake from the main stator winding of the servo motor and ensure that the insulation life of the winding is not affected by dust.

[0014] Preferably, when the surface of each boss facing the brake is provided with a plurality of protrusions and grooves for radially positioning the brake in sequence along its radial direction, the protrusions are arranged at the outer end of the boss, and the grooves are arranged at the middle and inner end of the boss. Larger brakes are radially positioned by the outer boss, smaller brakes are positioned by the inner boss, and smaller brakes are directly grooved on the plane.

[0015] Further preferably, the outer end of the boss extends circumferentially with the axis as the center to form an arc-shaped widened portion, and the protrusion extends circumferentially with the axis as the center to the arc-shaped widened portion.

[0016] Preferably, the plurality of grooves are stepped, and the thickness of the boss at the plurality of grooves increases step by step from the inner end to the outer end of the boss in the radial direction, so that the installation of brakes of various specifications can be applied. Although the thickness of the boss corresponding to a smaller brake is thinner, the service life of the end cover is not affected because the brake is small.

[0017] Preferably, the mounting screw holes on the end cover structure connected to the brake are opened on the boss, and a plurality of end cover reinforcing ribs are provided on the other end surface of the end cover structure corresponding to the mounting screw holes.

[0018] Preferably, a wire installation platform for fixing the connector is provided on the peripheral surface of the end cover structure corresponding to the end cover wire outlet, and the area of ​​the wire installation platform is set as large as possible to accommodate connectors of different specifications.

[0019] A second aspect of the present invention provides a wiring installation method for a servo motor, using the above-mentioned brake end cover structure, and the wiring installation method comprises: Wiring method: Prepare an end cap blank, the circumferential surface of which has a radial, stepped end cap outlet, and one end surface of which is integrally formed with a plurality of protrusions and / or grooves; According to the wire diameters of the main power line of the servo motor and the auxiliary line of the brake, the stepped end cover outlet is axially expanded from the tread to an adaptable diameter capable of accommodating the main power line and the auxiliary line of the brake, and a brake outlet capable of accommodating the auxiliary line of the brake is axially opened at the hole wall of the expanded end cover outlet; Lead the main power line into the end cover outlet, pass the brake auxiliary line through the brake outlet and lead it into the end cover outlet, the main power line and the brake auxiliary line meet at the main outlet hole and connect with the external connector, install the connector on the outlet installation platform on the end cover structure; Installation method: According to the outer diameter of the brake flange stop selected, process the bumps or grooves on the end cover structure; After the stator and rotor are assembled, the processed end cover structure is inserted into the rotating shaft and fixed on the machine base; the brake flange is radially positioned on the inner side of the protrusion or the groove, and the brake flange is in contact with the plane inside the protrusion or the groove; the brake rotor is inserted into the rotating shaft through the spline, and then the brake and flange, brake protection cover and end cover structure are fixed in sequence.

[0020] Preferably, a plurality of protrusions and / or grooves are integrally formed on the end cover structure; When the stopper matches one of the protrusions, the other protrusions located inside the protrusion are removed; When the stopper does not match any protrusion and the cutting groove, a cutting groove matching the stopper is machined on the surface of the boss.

[0021] The working principle and advantages of the present invention are as follows: The present invention can adapt to leads, connectors and brakes of different specifications through the design of a large-area outlet installation platform, a stepped end cover outlet port design, and a multi-layer brake mounting boss. It can also effectively solve the problems of large processing allowance and non-universal end cover blanks, thereby meeting the universal requirements of the end cover.

[0022] The present invention contacts the brake flange through the boss, and the contact area between the brake flange and the end cover structure becomes smaller, thereby increasing thermal resistance, effectively preventing heat generated by frequent braking from being directly transferred to the bearing, and increasing the service life of the bearing.

[0023] The invention can realize the electrical connection problem of small stator outer diameter and large brake outer diameter by adding a radial end cover wire outlet to the end cover structure and arranging an axial brake wire outlet in the end cover wire outlet.

[0024] The present invention provides a sealing ring in the brake wire outlet, thereby isolating the brake from the main stator winding, ensuring that the insulation life of the winding is not affected by dust.

[0025] The end cover wire outlet of the present invention is a stepped wire outlet with a rounded bevel. After processing, the rounded corners of the wire inlet can be smooth, which can provide reliable protection for the lead insulation of connectors of different specifications and avoid electrical faults caused by long-term wear of the lead insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 This is the assembly diagram of the motor structure of the present invention; Attached Figure 2 This is the original pitch motor structure assembly drawing; Attached Figure 3 It is a right isometric view of the end cover blank of the present invention; Attached Figure 4 It is a left isometric view of the end cover blank of the present invention; Attached Figure 5 A top view of the outlet of the end cover blank of the present invention; Attached Figure 6 This is a cross-sectional view of the outlet of the end cover blank of the present invention; Attached Figure 7 This is a cross-sectional view of the small-diameter processing of the outlet port of the end cover blank of the present invention; Attached Figure 8 This is a cross-sectional view of the end cap blank wire outlet processed with a large diameter according to the present invention; Attached Fig. 9It is a right view of the end cover structure when the brake of the present invention is matched with the outermost protrusion; Attached Fig.10 For the present invention Fig. 9 Sectional view at AA in the middle; Attached Fig.11 It is a right isometric view of the brake of the present invention when it is in cooperation with the outer convex block; Attached Fig.12 It is a right isometric view of the brake of the present invention when it is matched with the inner side projection; Attached Fig.13 It is a right isometric view of the brake of the present invention when it cooperates with the cut groove.

[0027] In the above attached figure: 1. End cover structure; 2 base; 3. Brake protection cover; 4 brakes; 5. Brake auxiliary line; 6 main power lines; 7. Connectors; 8 transition plate; 11. End cover outlet; 111 annular step surface; 12 brake cable outlet; 13 sealing ring; 14 bosses; 15 convex ring; 16 bumps; 17 Grooving; 18 mounting screw holes; 19 end cover reinforcement rib; 20 arc-shaped widening portion; 21 outlet installation platform. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0029] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0030] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0031] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0032] See attached Figure 1-13 The present invention provides a brake end cover structure of a servo motor. The end cover structure 1 is connected to a machine base 2 and a brake protection cover 3 on both sides by screws.

[0033] An end cover outlet 11 communicating with the inner cavity of the base 2 is radially formed on the circumference of the end cover structure 1. The end cover outlet 11 is stepped and the inner diameter of each step decreases step by step from the inlet to the outlet. The end cover outlet 11 has at least two annular step surfaces 111.

[0034] The minimum diameter of the end cover outlet 11 (i.e., the diameter of the annular step surface 111 at the outlet of the end cover outlet 11) needs to be designed according to the smallest outlet, suitable for connecting leads of different specifications of connectors 7; when the minimum diameter cannot pass the lead, the hole can be expanded from the diameter that can pass the lead to the smaller diameter, that is, the hole can be expanded vertically along the step facade, as shown in FIG. Figure 3-6 .

[0035] The tread of the annular step surface 111 is a bevel with rounded corners, so that the rounded corners of the incoming wire are smooth, which can provide reliable protection for the lead wire insulation of connectors 7 of different specifications, avoiding electrical failures caused by long-term wear of the lead wire insulation. Figure 4-5 .

[0036] At least one brake outlet 12 is axially provided in the end cover outlet 11 and communicated with the brake protective cover 3. In this embodiment, two brake outlets 12 are provided, one large and one small. The brake auxiliary line 5 can axially pass through the brake outlet 12 to enter the end cover outlet 11 and merge with the main power line 6 of the motor, so as to realize the electrical connection problem of small stator outer diameter and large brake 4 outer diameter.

[0037] A sealing ring 13 is fixedly arranged in the brake outlet 12, which can isolate the brake 4 from the main stator winding of the servo motor to ensure that the insulation life of the winding is not affected by dust. Both ends of the sealing ring 13 have sealing heads that limit the axial movement of the sealing ring 13 along the brake outlet 12. The outer wall of the sealing ring 13 is evenly provided with sealing rings along its length direction, and the sealing rings are interference fit with the brake outlet 12.

[0038] The end surface of the end cover structure 1 located on the brake 4 side is provided with a plurality of bosses 14, and the plurality of bosses 14 are distributed in an umbrella shape with the axis of the end cover structure 1 as the center. Each of the bosses 14 is connected to a convex ring 15 at the axis, and the convex ring 15 is sleeved on the outside of the motor shaft. The convex ring 15 and the boss 14 are integrally formed with the end cover structure 1. In order to strengthen the strength of the boss 14, the middle parts of the bosses are also connected by a reinforcing ring.

[0039] The surface of each boss 14 facing the brake 4 is provided with a plurality of bumps 16 and / or grooves 17 in sequence along its radial direction for radially positioning the brake 4. The vertical surface of the bump 16 and / or groove 17 is matched with the stopper on the edge of the flange of the brake 4, and the radial inner plane of the bump 16 and / or groove 17 is in contact with the flange of the brake 4.

[0040] In this embodiment, the surface of each boss 14 facing the brake 4 is sequentially provided with a plurality of protrusions 16 and grooves 17 along its radial direction for radially positioning the brake 4. The number and position of the protrusions 16 and grooves 17 can be set according to the specifications of the common brake 4 on the market. The protrusions 16 are arranged at the outer end of the boss 14, and the grooves 17 are arranged at the middle and inner end of the boss 14. In this arrangement, the protrusions 16 and grooves 17 will not affect each other, and can be used for positioning brakes 4 of different specifications.

[0041] During installation, the larger brake 4 is positioned radially by the outer boss 14. Figure 9-11 The smaller brake 4 is positioned by the inner boss 14, see Fig.12 ; Smaller grooves are cut directly on the plane 17, see Fig.13 .in, Fig. 9 , Fig.11 , Fig.12 , Fig.13 The shaded portion in the figure is the contact surface between the brake 4 and the end cover structure 1.

[0042] In other embodiments, the surface of each boss 14 facing the brake 4 may be provided with a plurality of protrusions 16 for radially positioning the brake 4 in sequence along its radial direction, and when the stopper of the brake 4 is matched with one of the protrusions 16, the other protrusions 16 located inside the protrusion 16 need to be removed to prevent the other protrusions 16 from affecting the plane contact between the flange of the brake 4 and the inside of the matching protrusion 16. When installing a smaller size brake 4, a groove 17 may be temporarily processed in the middle or inner end of the surface of the boss 14.

[0043] In other embodiments, the surface of each boss 14 facing the brake 4 may also be provided with a plurality of grooves 17 in sequence along its radial direction for radially positioning the brake 4. When installing the brake 4, the grooves 17 are temporarily processed according to the specifications of the brake 4.

[0044] The flange of the brake 4 contacts with several bosses 14 on the end cover structure 1, and the contact area is reduced, which increases the thermal resistance and can effectively prevent the heat generated by frequent braking from being directly transferred to the bearing, thereby increasing the service life of the bearing. Several bumps 16 and / or grooves 17 are arranged on the boss 14, which are suitable for radial positioning and installation of brakes 4 of different specifications.

[0045] To increase the strength of the bump 16 , the outer end of the boss 14 extends circumferentially with the axis as the center to form an arc-shaped widened portion 20 , and the bump 16 extends circumferentially with the axis as the center to the arc-shaped widened portion 20 .

[0046] The plurality of grooves 17 are stepped, and the thickness of the boss 14 at the plurality of grooves 17 increases step by step from the inner end to the outer end of the boss 14 in the radial direction, so that various specifications of the brake 4 can be installed. Although the thickness of the boss 14 corresponding to the smaller brake 4 is thinner, the service life of the end cover is not affected because the brake 4 is small.

[0047] See attached Figure 9-13 The brake 4 is connected to the end cover structure 1 through a flange and screws. A mounting screw hole 18 that can cooperate with the screw is opened on the end cover structure 1. The mounting screw hole 18 is opened on the boss 14. A plurality of end cover reinforcement ribs 19 are provided on the other end surface of the end cover structure 1 corresponding to the mounting screw hole 18. The end cover reinforcement ribs 19 can strengthen the strength of the end cover structure 1 and the boss 14 after the mounting screw hole 18 is opened.

[0048] An outlet installation platform 21 for fixing the plug connector 7 is arranged on the circumference of the end cover structure 1 corresponding to the end cover outlet 11. The area of ​​the outlet installation platform 21 needs to be as large as possible. The installation areas required for plug connectors 7 of different specifications are different. Therefore, a larger outlet installation platform 21 can adapt to plug connectors 7 of different specifications. The plug connector 7 is fixed to the outlet installation platform 21 by mounting screws. The length of the mounting screws required for plug connectors 7 of different specifications is different. Therefore, the depth of the end cover outlet 11 needs to ensure the maximum installation depth requirement of the mounting screws while ensuring air tightness.

[0049] The present invention also provides a wiring installation method for a servo motor, using the above-mentioned brake end cover structure 1, and the wiring installation method comprises: 1. Wiring method: An end cap blank is prepared, and a radial, stepped end cap outlet 11 is provided on the circumference of the end cap blank, and the inner diameter of each step of the stepped end cap outlet 11 is gradually reduced from the inlet to the outlet; a plurality of bosses 14 are integrally formed on one end face of the end cap blank, and the plurality of bosses 14 are distributed in an umbrella shape with the axis of the end cap structure 1 as the center of the circle; a plurality of protrusions 16 for radially positioning the brake 4 are integrally formed in sequence on the surface of each boss 14 along its radial direction, as shown in FIG. Figure 9-11 ; According to the wire diameters of the main power line 6 of the servo motor and the brake auxiliary line 5, the stepped end cover outlet 11 is axially expanded from the tread to an adaptable diameter capable of accommodating the main power line 6 and the brake auxiliary line 5, specifically, the hole is expanded in the direction of the smaller diameter; a brake outlet 12 capable of accommodating the brake auxiliary line 5 is axially opened at the hole wall of the expanded end cover outlet 11; Introduce the main power line 6 into the end cover outlet 11, pass the brake auxiliary line 5 through the brake outlet 12 axially opened on the end face of the end cover structure 1 and introduce it into the end cover outlet 11, the main power line 6 and the brake auxiliary line 5 merge at the main outlet hole and are connected to the external connector 7, and the connector 7 is fixedly installed on the outlet installation platform 21 on the end cover structure 1 by installing screws.

[0050] 2. Installation method: According to the outer diameter of the flange stopper of the selected brake 4, the protrusions 16 on the end cover structure 1 are processed. The processing method is: when the stopper is adapted to one of the protrusions 16, the other protrusions 16 located inside the protrusion 16 are removed. Fig.11 When the stopper does not fit with any of the projections 16, a groove 17 is machined on the surface of the boss 14 to fit with the stopper, see Fig.13 ; After the stator and rotor are assembled, the machined end cover structure 1 is inserted into the shaft through the shaft hole and fixed to the base 2 with screws; the brake 4 is radially positioned inside the protrusion 16 or the groove 17, and the flange of the brake 4 is in contact with the plane inside the protrusion 16 or the groove 17, as shown in FIG. Fig. 9 , Fig.11 , Fig.12 , Fig.13 The shaded portion in the figure is the contact surface between the brake 4 and the end cover structure 1; The brake and flange, the brake protection cover 3 and the end cover structure 1 are fixed in sequence by screws.

[0051] In other embodiments, the end cover blank may be pre-processed with a groove 17 adapted to the commonly used brake 4 on the market. For the installation of the brake 4 that is not commonly used, a groove 17 adapted thereto may be processed on site. Fig.13 .

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake end cover structure of a servo motor, the end cover structure is connected to a base and a brake protection cover on both sides respectively, and is characterized in that: An end cover outlet communicating with the inner cavity of the base is radially provided on the peripheral surface of the end cover structure, the end cover outlet is stepped and the inner diameter of each step decreases step by step from the inlet to the outlet, and at least one brake outlet communicating with the brake protective cover is axially provided in the end cover outlet; The end cover structure is provided with a plurality of bosses on an end face located on the brake side, and the plurality of bosses are distributed in an umbrella shape with the axis of the end cover structure as the center of the circle, and the surface of each boss facing the brake is provided with a plurality of protrusions and / or grooves in sequence along its radial direction for radially positioning the brake, and the vertical surface of the protrusion and / or groove is matched with the stopper on the edge of the brake flange, and the radial inner plane of the protrusion and / or groove is in contact with the brake flange.

2. The brake end cover structure of a servo motor according to claim 1, characterized in that: The end cover outlet has at least two annular step surfaces, and the treads of the annular step surfaces are inclined surfaces with rounded corners.

3. The brake end cover structure of a servo motor according to claim 1, characterized in that: A sealing ring is fixedly arranged in the brake wire outlet.

4. The brake end cover structure of a servo motor according to claim 1, characterized in that: The surface of each boss facing the brake is provided with a plurality of protrusions and grooves for radially positioning the brake in sequence along its radial direction. The protrusions are arranged at the outer ends of the bosses, and the grooves are arranged at the middle and inner ends of the bosses.

5. A brake end cover structure of a servo motor according to claim 1 or 4, characterized in that: The outer end of the boss extends circumferentially with the axis as the center to form an arc-shaped widened portion, and the protrusion extends circumferentially with the axis as the center to the arc-shaped widened portion.

6. A brake end cover structure of a servo motor according to claim 1 or 4, characterized in that: A plurality of the cutting grooves are in a stepped shape, and the thickness of the boss at the plurality of cutting grooves increases step by step from the inner end to the outer end of the boss in the radial direction.

7. The brake end cover structure of a servo motor according to claim 1, characterized in that: The mounting screw holes on the end cover structure connected to the brake are arranged on the boss, and a plurality of end cover reinforcing ribs are arranged on the other end surface of the end cover structure corresponding to the mounting screw holes.

8. The brake end cover structure of a servo motor according to claim 1, characterized in that: An outlet installation platform for fixing the connector is arranged on the peripheral surface of the end cover structure corresponding to the end cover outlet.

9. A wiring installation method for a servo motor, characterized in that: Using the brake end cover structure according to any one of claims 1 to 8, the wiring installation method comprises: Wiring method: Prepare an end cap blank, the circumferential surface of which has a radial, stepped end cap outlet, and one end surface of which is integrally formed with a plurality of protrusions and / or grooves; According to the wire diameters of the main power line of the servo motor and the auxiliary line of the brake, the stepped end cover outlet is axially expanded from the tread to an adaptable diameter capable of accommodating the main power line and the auxiliary line of the brake, and a brake outlet capable of accommodating the auxiliary line of the brake is axially opened at the hole wall of the expanded end cover outlet; Lead the main power line into the end cover outlet, pass the brake auxiliary line through the brake outlet and lead it into the end cover outlet, the main power line and the brake auxiliary line meet at the main outlet hole and connect with the external connector, install the connector on the outlet installation platform on the end cover structure; Installation method: According to the outer diameter of the brake flange stop selected, process the bumps or grooves on the end cover structure; After the stator and rotor are assembled, the processed end cover structure is inserted into the rotating shaft and fixed on the machine base; the brake flange is radially positioned on the inner side of the protrusion or the groove, and the brake flange is in contact with the plane inside the protrusion or the groove; the brake rotor is inserted into the rotating shaft through the spline, and then the brake and flange, brake protection cover and end cover structure are fixed in sequence.

10. A servo motor wiring installation method according to claim 9, characterized in that: The method for processing the bumps or grooves on the end cap structure comprises: When the stopper matches one of the protrusions, the other protrusions located inside the protrusion are removed; When the stopper does not match any protrusion and the cutting groove, a cutting groove matching the stopper is machined on the surface of the boss.