Servo motor

Abstract

The utility model provides a servo motor, which comprises a front flange, a casing, a rear flange, a fan assembly and a fan cover, the front flange is connected with one end of the casing, the rear flange is connected with the other end of the casing, the servo motor further comprises a rear cover plate locked with the rear flange, and the fan assembly is mounted in the fan cover through the rear cover plate. The fan assembly is connected with the center of the rear cover plate through a locking piece; a plurality of first connecting parts are arranged on the periphery of the rear flange, second connecting parts corresponding to the first connecting parts are arranged on the periphery of the rear cover plate, and the first connecting parts and the second connecting parts are arranged on the outer side of the fan assembly and locked with the wall of the machine shell through locking devices.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a servo motor. Background Art

[0002] The servo motor will generate a lot of heat during operation. If the heat cannot be dissipated in time, it may affect the normal operation of the motor and may cause damage to the motor. Therefore, the heat dissipation problem of the servo motor is a very important issue, and corresponding measures need to be taken to ensure the normal operation of the servo motor.

[0003] Currently, most servo motors are usually cooled by air. A fan is installed in the motor, and the cooling air generated by the fan flows through the air duct to take away the heat generated by the motor.

[0004] The size of the fan that can be installed in the servo motor determines the heat dissipation performance of the motor. For the current air-cooled servo motor, the fan is installed in the wind cover at the rear end of the housing installation cavity. In order to increase the heat dissipation performance, the air duct is set between the housing body and the installation cavity. The fan is often fixed in the wind cover by the rear cover. The installation area of ​​the rear cover determines the size of the fan that can be installed.

[0005] CN220358931U discloses a motor housing and a servo motor, wherein a rear flange is installed on the inner side of a mounting cavity, and a rear cover plate and a fan assembly are simultaneously installed on the inner side of the mounting cavity, resulting in that the mounting structure of the rear cover plate occupies the mounting position of the fan assembly, the installed fan is small in size, and the air cooling efficiency is low.

[0006] At the same time, in this solution, the casing includes a casing body and an installation cavity, the installation cavity is flush with the end face of the casing body, the front flange is connected to the casing by abutting against the casing through an extension, and because the end cover of the front flange is not abutted against the end cover of the casing, the foot cannot be close to the end face of the whole machine when it is installed. There is a gap between the foot and the cover plate of the front flange, that is, the end face of the whole machine, which will cause the motor to be unstable during use, thereby aggravating mechanical vibration and causing wear and damage to the motor. Utility Model Content

[0007] The utility model provides a servo motor, which can increase the size of an installed fan and improve the air cooling effect.

[0008] In order to solve the above technical problems, the utility model provides a servo motor, including a front flange, a casing, a rear flange, a fan assembly, and a hood, wherein the front flange is connected to one end of the casing, the rear flange is connected to the other end of the casing, and also includes a rear cover plate locked with the rear flange, the fan assembly is installed in the hood through the rear cover plate, and the fan assembly is connected to the center of the rear cover plate by a locking piece; a plurality of first connecting parts are arranged around the rear flange, and second connecting parts corresponding to the first connecting parts are arranged around the rear cover plate, the first connecting part and the second connecting part are arranged on the outside of the fan assembly, and are locked with the casing wall by a locking device

[0009] In some embodiments, the casing includes a casing body and an installation cavity for installing a stator and rotor assembly, the installation cavity is arranged inside the casing body, and a plurality of air ducts extending along the length direction of the casing body are formed between the casing body and the installation cavity; one end of the installation cavity extends outward along the casing body to form a flange installation portion, and the front flange is inserted into the inner cavity of the flange installation portion.

[0010] In some of the embodiments, two anchor fixing grooves are symmetrically provided at the bottom of the flange mounting portion for fixing the front anchors, and the anchor fixing grooves are arranged along the length direction of the flange mounting portion.

[0011] In some embodiments, the anchor fixing groove is composed of two L-shaped ribs arranged opposite to each other.

[0012] In some of the embodiments, a plurality of hanging fixing grooves extending along the length direction of the casing are provided around the casing body.

[0013] In some embodiments, the lifting and fixing groove includes a first part and a second part, the first part is formed by slotting the shell wall of the casing body toward the installation cavity, and the second part is slotted along a direction perpendicular to the first part so that the lifting and fixing groove forms a T-shaped groove.

[0014] In some embodiments, a motor junction box is further included. A recessed groove is provided on the top of one end of the rear flange of the casing for installation. The recessed groove penetrates through the top of the casing to form a wire outlet hole. The motor junction box is arranged above the recessed groove and wires are connected through the wire outlet hole.

[0015] In some of the embodiments, the bottom of the sink extends radially inward to form an extension platform.

[0016] In some of the embodiments, heat dissipation ribs are provided on the outer surface of the installation cavity along the length direction of the air duct.

[0017] In some of the embodiments, the fan assembly includes a fan and an air guide ring, wherein the air guide ring is used to guide the wind entering from the ventilation holes of the air cover into the fan.

[0018] In some of the embodiments, the outer peripheral surface of the rear flange is provided with avoidance grooves corresponding to the air ducts one by one to prevent the air ducts from being blocked.

[0019] In some of the embodiments, the wind shield is connected to the casing wall and covers the outside of the fan assembly, and the rear shell of the wind shield is a flat square.

[0020] In some embodiments, a stopper is provided on the inner wall of the inner cavity of the flange mounting portion, and a stopper groove cooperating with the stopper is provided on the extending portion.

[0021] In some embodiments, the front flange includes a cover plate and an extension portion, the extension portion is inserted into the inner cavity of the flange mounting portion, and the cover plate abuts against an end surface of the flange mounting portion.

[0022] In some embodiments, a stopper is provided on the inner wall of the inner cavity of the flange mounting portion, and a stopper groove cooperating with the stopper is provided on the extending portion.

[0023] In some embodiments, a stator and rotor assembly is arranged in the installation cavity, the motor rotor extends into the front flange, the casing is formed by hot extrusion of aluminum profiles, a winding core is arranged in the installation cavity, and the winding core and the casing constitute a stator assembly.

[0024] In some embodiments, the housing body is square, and the four top corners of the housing body are rounded.

[0025] Compared with the prior art, the beneficial effects of the present invention include:

[0026] 1. The motor of the utility model connects the first connection part of the rear flange and the second connection part of the rear cover plate to the casing wall, so that the mounting structure of the rear cover plate for fixing the fan assembly is on the outside of the fan assembly and does not occupy the installation space of the fan assembly, thereby increasing the installation area of ​​the rear cover plate, increasing the volume of the fan that can be accommodated, and improving the air cooling efficiency.

[0027] 2. By setting the anchor mounting groove on the flange mounting portion extending outward, and inserting the extension of the front flange into the inner cavity of the flange mounting portion, the anchor is closer to the end face, reducing the gap, making the motor more stable, and reducing mechanical vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the exploded diagram of the servo motor;

[0029] Figure 2 It is a three-dimensional diagram of the servo motor;

[0030] Figure 3 for Figure 2 A front view of

[0031] Figure 4 for Figure 2 Side view of

[0032] Figure 5 for Figure 2 A top view of

[0033] Figure 6 for Figure 2 Rear view of

[0034] Figure 7 This is a three-dimensional diagram of the servo motor housing;

[0035] Figure 8 for Figure 7 A front view of

[0036] Fig. 9 for Figure 7 Side view of

[0037] Fig.10 for Figure 7 A top view of

[0038] Fig.11 for Figure 7 A magnified image of point A;

[0039] Fig.12 It is the cross-sectional view of the front flange stop;

[0040] Fig.13 Schematic diagram of a motor with ground feet installed. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0044] Reference Figure 1-12 The present embodiment provides a servo motor, including a front flange 1, a casing 2, a rear flange 4, a fan assembly, and a fan cover 8. The front flange 1 is connected to one end of the casing 2, and the rear flange 4 is connected to the other end of the casing 2. It also includes a rear cover plate 5 locked with the rear flange, and the fan assembly is installed in the fan cover 8 through the rear cover plate 5.

[0045] Specifically, the fan assembly is connected to the center of the rear cover 5 through a locking piece; four first connecting parts 41 are arranged on the upper, lower, left and right sides of the rear flange 4, and second connecting parts 51 corresponding to the first connecting parts 41 are arranged on the four sides of the rear cover 5. The first connecting part 41 and the second connecting part 51 are locked to the casing wall through a locking device, so that the first connecting part 41 and the second connecting part 51 are arranged on the outside of the fan assembly.

[0046] The stator and rotor assembly is installed in the installation cavity 21 of the housing 2, the motor rotor extends into the front flange 1, the housing 2 is formed by hot extrusion of aluminum profiles, a winding core is arranged in the installation cavity 21, and the winding core and the housing 2 form a stator assembly. The fan assembly includes a fan 6 and an air guide ring 7, and the air guide ring 7 is used to guide the wind entering from the ventilation hole of the wind cover 8 into the fan 6.

[0047] The casing 2 includes a casing body 22, the installation cavity 21 is arranged inside the casing body 22, and a plurality of air ducts 23 extending along the length direction of the casing body are formed between the casing body 22 and the installation cavity 21; in order to prevent the air ducts 23 from being blocked, the outer peripheral surface of the rear flange 4 is provided with avoidance grooves 42 corresponding to the air ducts 23 one by one.

[0048] The motor of this embodiment connects the first connecting portion 41 of the rear flange 4 and the second connecting portion 51 of the rear cover 5 to the casing wall, so that the mounting structure of the rear cover 5 for fixing the fan assembly is located on the outside of the fan assembly and does not occupy the installation space of the fan assembly, thereby increasing the installation area of ​​the rear cover 5, increasing the volume of the fan that can be accommodated, and improving the air cooling efficiency.

[0049] Furthermore, in order to make the foot closer to the end face of the whole machine, one end of the installation cavity 21 extends outward along the casing body 22 to form a flange installation part 211, and the front flange 1 includes a cover plate 11 and an extension part 12, and the extension part 12 is inserted into the inner cavity of the flange installation part 211, and the cover plate 1 abuts against the end face of the flange installation part 211. The air duct 23 between the casing body 22 and the installation cavity 21 can increase the speed of heat dissipation, and the installation cavity 21 extends outward to form a flange installation part 211, and two foot fixing grooves 2111 are symmetrically arranged at the bottom of the flange installation part 211 for fixing the front foot 10-1, and the foot fixing groove 2111 is composed of two L-shaped ribs arranged opposite to each other, and the foot fixing groove 2111 is arranged along the length direction of the flange installation part 211. When the extension of the front flange is inserted into the inner cavity of the flange mounting portion 211, the cover plate 11 abuts against the end of the flange mounting portion 211. At this time, the cover plate 11 is the end face of the entire machine. Therefore, installing the front foot 10-1 on the flange mounting portion 211 can make the foot closer to the end face of the entire machine, thereby reducing the gap in the foot installation and making the motor more stable.

[0050] After the inner cavity is formed, the tolerance range is relatively large. In order to avoid the overall shape and position tolerance exceeding the tolerance after installation, in this embodiment, an inner stop 212 is set on the inner wall of the flange mounting portion 211, and an outer stop 121 is set on the outer wall of the extension portion 12.

[0051] Furthermore, the casing body 22 is provided with a plurality of lifting and fixing grooves 221 extending along the length direction of the casing, and the lifting and fixing grooves 221 include a first part 2211 and a second part 2212. The first part 2211 is formed by slotting the shell wall of the casing body 22 toward the installation cavity 21, and the second part 2212 is slotted in a direction perpendicular to the first part 2211 so that the lifting and fixing groove 221 forms a T-shaped groove.

[0052] The hoisting fixing groove 221 can be fixed with fixing strips such as anchors, lifting ears, motor junction boxes and other related accessories.

[0053] Specifically, the lifting ears 9 on both sides of the motor are respectively fixed in the lifting and fixing grooves 221 on both sides of the casing body 22. When the motor is lifted, the lifting ears 9 on both sides of the motor can be pulled to lift the motor for assembly. The lifting and fixing grooves 211 at the bottom of the casing body 22 fix the rear foot 10-2, and the lifting and fixing grooves 211 at the top of the casing body 22 are used to fix the motor terminal box 3.

[0054] In order to connect the motor junction box 3, in this embodiment, a recessed groove 24 is provided at the top of one end of the rear flange of the housing 2, and the recessed groove 24 penetrates through the top of the housing to form a wire outlet hole, and the motor junction box 3 is arranged above the recessed groove 24 and wired through the wire outlet hole. At the same time, the motor junction box 3 is fixed by the hoisting fixing groove 221 at the top of the housing.

[0055] In order to seal the sink 24 with a stepped sealing ring, the bottom of the sink 24 extends radially inward to form an extension platform 241 , so that the stepped sealing ring can be used for sealing, and the horizontal surface of the sealing ring just abuts against the extension platform 241 .

[0056] In order to further improve the heat dissipation performance, heat dissipation ribs 212 are provided on the outer surface of the installation cavity 21 along the length direction of the air duct 23 .

[0057] In order to further increase the installation space of the fan, the wind cover 8 is installed on the outside of the air duct of the casing body 22 and is connected to the end face of one end of the rear flange of the casing body 22. The rear shell of the wind cover 8 is a flat square and not concave inward, so the installation space of the fan can be further increased.

[0058] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A servo motor, comprising a front flange, a casing, a rear flange, a fan assembly, and a hood, wherein the front flange is connected to one end of the casing, the rear flange is connected to the other end of the casing, and further comprising a rear cover plate locked with the rear flange, wherein the fan assembly is installed in the hood through the rear cover plate, and characterized in that: The fan assembly is connected to the center of the rear cover by a locking piece; a plurality of first connecting parts are arranged around the rear flange, and second connecting parts corresponding to the first connecting parts are arranged around the rear cover, and the first connecting parts and the second connecting parts are arranged on the outside of the fan assembly and locked to the casing wall by a locking device.

2. The servo motor according to claim 1, characterized in that: The casing includes a casing body and an installation cavity for installing a stator and rotor assembly. The installation cavity is arranged inside the casing body, and a plurality of air ducts extending along the length direction of the casing body are formed between the casing body and the installation cavity. One end of the installation cavity extends outward along the casing body to form a flange installation portion, and the front flange is inserted into the inner cavity of the flange installation portion.

3. The servo motor according to claim 2, characterized in that: Two anchor fixing grooves are symmetrically arranged at the bottom of the flange mounting portion for fixing the front anchors, and the anchor fixing grooves are arranged along the length direction of the flange mounting portion.

4. The servo motor according to claim 3, characterized in that: The anchor fixing groove is composed of two L-shaped ribs arranged opposite to each other.

5. The servo motor according to claim 2, characterized in that: A plurality of hoisting fixing grooves extending along the length direction of the casing are arranged around the casing body.

6. The servo motor according to claim 5, characterized in that: The hanging fixing groove includes a first part and a second part, the first part is formed by slotting the shell wall of the shell body toward the installation cavity, and the second part is slotted along a direction perpendicular to the first part so that the hanging fixing groove forms a T-shaped groove.

7. The servo motor according to claim 1, characterized in that: It also includes a motor junction box. After the casing is installed, a recessed groove is provided on the top of one end of the flange. The recessed groove penetrates through the top of the casing to form a wire outlet hole. The motor junction box is arranged above the recessed groove and wires are connected through the wire outlet hole.

8. The servo motor according to claim 7, characterized in that: The bottom of the sink extends radially inward to form an extension platform.

9. The servo motor according to claim 2, characterized in that: The outer surface of the installation cavity is provided with heat dissipation ribs along the length direction of the air duct.

10. The servo motor according to claim 1, characterized in that: The fan assembly includes a fan and an air guide ring, wherein the air guide ring is used to guide the wind entering from the ventilation hole of the wind cover into the fan.

11. The servo motor according to claim 2, characterized in that: The outer peripheral surface of the rear flange is provided with avoidance grooves corresponding to the air ducts one by one to prevent the air ducts from being blocked.

12. The servo motor according to claim 1, characterized in that: The wind cover is connected to the casing wall and covers the outside of the fan assembly, and the rear shell of the wind cover is in a flat square shape.

13. The servo motor according to claim 2, characterized in that: The front flange includes a cover plate and an extension portion, the extension portion is inserted into the inner cavity of the flange mounting portion, and the cover plate abuts against an end surface of the flange mounting portion.

14. The servo motor according to claim 13, characterized in that: The flange mounting portion is provided with an inner stopper, and the flange extending portion is provided with an outer stopper.

15. The servo motor according to any one of claims 2-6, 9, 11, 13, and 14, characterized in that: A stator and rotor assembly is arranged in the installation cavity, the motor rotor extends into the front flange, the casing is formed by hot extrusion of aluminum profiles, a winding core is arranged in the installation cavity, and the winding core and the casing form a stator assembly.

16. The servo motor according to any one of claims 1 to 14, characterized in that: The casing body is square, and the four top corners of the casing body are rounded.

Images