Motor end cover, motor end cover assembly and motor

Abstract

This utility model provides a motor end cover, a motor end cover assembly, and a motor. The motor end cover includes an end cover body, a first cable connection hole on a mounting flange on the edge of the end cover body, a protrusion on the inner end face of the end cover body, forming a corresponding cavity on the outer end face, and a through hole in the protrusion to allow the motor cable on the inner end face to be accommodated in the cavity. This utility model ensures sufficient space for the motor cable and connector on the outer end face of the motor end cover, preventing interference between the motor cable and connector and other components of the motor, thus avoiding failure risks and safety hazards. It eliminates the need for a dedicated junction box or extended mounting flange, thereby preventing the motor from becoming excessively large, effectively increasing the applicability of the motor, facilitating serialization of motor development, saving mold costs, and reducing development and production costs.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor end cover, a motor end cover assembly, and a motor. Background Technology

[0002] Motors with brakes typically have the brake fixed to the rear end face of the motor end cover. The motor cables inside the motor pass through the motor end cover and are placed between the brake and the rear protective cover of the brake. Because the space between the brake and the rear protective cover of the brake is relatively tight, the terminal cables and connectors are squeezed for a long time, which may pose a risk of failure and safety hazards. Some motors also have a junction box specifically placed between the end cover and the brake, or on the side of the motor. This arrangement will result in the motor itself being too large, reducing its applicable range and increasing production costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a motor end cover, a motor end cover assembly, and a motor, which can ensure sufficient space for the motor cable on the outer end face of the motor end cover, and avoid interference between the motor cable and the connecting connector on the outer end face of the motor end cover and other components of the motor, thus preventing failure risks and safety hazards; it eliminates the need for a dedicated junction box or extended mounting flange, thereby avoiding an excessively large motor size, effectively improving the applicability of the motor, facilitating the serialization development of the motor, saving mold costs, and reducing development and production costs.

[0004] The technical solution adopted in this utility model is as follows: A motor end cover includes an end cover body, the edge of which is provided with a mounting flange, and the inner end face of the end cover body is provided with a protrusion, so that the outer end face of the end cover body forms a corresponding cavity. The protrusion is provided with a through hole, so that the motor cable on the inner end face side is accommodated in the cavity through the through hole.

[0005] In addition, the motor end cover proposed according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the motor cable includes a first cable and a second cable. A first cable connection hole is provided on the mounting flange. A first through hole is provided on the side of the protrusion near the first cable connection hole. A second through hole is also provided on the other side of the protrusion. The first cable of the motor passes through the first cable connection hole and the first through hole in sequence and is connected to the second cable of the motor in the cavity. The second cable is connected to the internal circuit of the motor through the second through hole.

[0006] According to one embodiment of the present invention, the mounting flange is further provided with a phase wire connection hole, which is located on the side of the mounting flange away from the protrusion, so that the phase wire of the motor extends out through the phase wire connection hole.

[0007] According to one embodiment of the present invention, cable fixing heads are respectively installed on the first cable connection hole and the phase wire connection hole.

[0008] According to one embodiment of the present invention, a pulse wheel mounting portion is provided at the center of the end cap body, the cavity is connected to the pulse wheel mounting portion, and a first sensor mounting portion is provided at the connection between the cavity and the pulse wheel mounting portion. The first sensor mounting portion includes a threaded hole for fixing the first sensor.

[0009] According to one embodiment of the present invention, the mounting flange is further provided with at least one second sensor mounting portion, the second sensor mounting portion including a boss protruding from the mounting flange, the boss having a mounting position for the second sensor.

[0010] In addition, to achieve the above objectives, this utility model also proposes a motor end cover assembly.

[0011] A motor end cap assembly includes a motor end cap as described above; and a brake, the brake being mounted on the outer end face of the end cap body.

[0012] According to one embodiment of the present invention, the brake is provided with a rear protective cover, which is installed on the outer end face of the end cover body.

[0013] In addition, to achieve the above objectives, this utility model also proposes an electric motor.

[0014] An electric motor includes: a rotor-stator assembly and a motor end cover assembly as described above, the motor end cover being mounted on the rotor-stator assembly via the mounting flange.

[0015] According to one embodiment of the present invention, the rotor-stator assembly includes: a housing stator assembly, the housing stator assembly having a mounting portion adapted to the mounting flange; and a rotor assembly, the rotor shaft of which passes through the motor end cover via a bearing and is connected to the spline block of the brake.

[0016] The beneficial effects of this utility model are: This utility model's motor end cover features a protrusion on the inner end face of the end cover body, creating a corresponding cavity on the outer end face. A through-hole in the protrusion connects the space on the inner end face of the end cover body to the cavity, allowing the motor cable to be accommodated within the cavity. This ensures sufficient space for the motor cable and connector on the outer end face of the motor end cover, preventing interference between the motor cable and connector and other motor components (such as brakes), thus avoiding potential failures and safety hazards. Furthermore, because the cavity corresponds to the protrusion, the motor cable and connector do not require additional space outside the motor end cover, eliminating the need for a dedicated junction box or extended mounting flange. This prevents the motor from becoming excessively large, effectively expanding its applicability, facilitating serialization, saving mold costs, and reducing development and production costs.

[0017] The end cap assembly of this utility model, since it includes the motor end cap described above, also has the above-mentioned beneficial effects. Moreover, since the brake is installed on the outer end face of the end cap body, it will not encroach on the connection space of the internal cables of the motor, ensuring sufficient wiring space.

[0018] The motor of this invention, having included the end cap assembly described above, also possesses the aforementioned beneficial effects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the motor end cover according to an embodiment of the present utility model; Figure 2 for Figure 1 Rear view of the motor end cover in the illustrated embodiment; Figure 3 This is a schematic diagram of the motor cable connection relationship according to an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the cooperation relationship between the sensor and the motor end cover according to one embodiment of the present invention; Figure 5 This is an exploded view of the motor end cover assembly according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the motor structure according to an embodiment of the present utility model; Figure 7 This is an exploded view of a motor according to an embodiment of the present invention.

[0020] Figure label: 1. End cap body; 11. Inner end face; 12. Protrusion; 13. Outer end face; 14. Cavity; 15. First through hole; 16. Second through hole; 17. Pulse wheel mounting part; 18. First sensor mounting part; 181. Threaded hole; 2. Mounting flange; 21. First cable connection hole; 22. Phase wire connection hole; 23. Second sensor mounting part; 231. Boss; 232. Third through hole; A. First cable; B. Second cable; C. Phase wire; 10. Motor end cap; 20. Brake; 30. Rear cover; 40. Housing stator assembly; 50. Rotor assembly; 60. Bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 and Figure 2 As shown, the motor end cover of this utility model embodiment includes an end cover body 1. The edge of the end cover body 1 is provided with a mounting flange 2 for mounting the motor end cover on the rotor-stator assembly. The inner end face 11 of the end cover body 1 is provided with a protrusion 12, so that the outer end face 13 of the end cover body 1 forms a corresponding cavity 14. The protrusion 12 is provided with through holes (15, 16), so that the motor cable on the inner end face side is accommodated in the cavity through the through holes (15, 16).

[0023] It is understood that in this embodiment, the motor end cover has a protrusion 12 on the inner end face 11 of the end cover body 1, which forms a corresponding cavity 14 on the outer end face 13 of the end cover body 1. The space on the inner end face 11 of the end cover body 1 is connected to the cavity 14 by opening a through hole in the protrusion 12. This allows the motor cable to be accommodated in the cavity 14 through the through hole, ensuring sufficient space for the motor cable and connector on the outer end face 13 of the motor end cover. This avoids interference between the motor cable and connector on the outer end face 13 of the motor end cover and other components of the motor (such as the brake), which could lead to failure risks and safety hazards. Moreover, since the cavity 14 corresponds to the protrusion 12, the motor cable and connector on the outer end face 13 do not need to occupy additional space outside the motor end cover. There is no need to specially set up a junction box or extend the mounting flange 2, which can avoid the motor itself being too large, effectively improve the applicability of the motor, facilitate the serial development of the motor, save mold costs, and reduce development and production costs.

[0024] like Figure 2 and Figure 3As shown, in one embodiment of this utility model, the motor cable may include a first cable A and a second cable B. A first cable connection hole 21 is provided on the mounting flange 2. A first through hole 15 is provided on one side of the protrusion 12 near the first cable connection hole 21, and a second through hole 16 is provided on the other side of the protrusion 12. The first cable A of the motor passes through the first cable connection hole 21 and the first through hole 15 in sequence, and connects to the second cable B of the motor in the cavity 14. The second cable B is connected to the internal circuit of the motor through the second through hole 16. The first cable A may be an eight-core signal cable, and the second cable B may be a thermal cable. Those skilled in the art can also configure the first cable A and the second cable B according to actual needs. The cavity 14 can also be used for connecting the first cable A to other motor cables, etc., and this embodiment does not impose any limitations.

[0025] In one embodiment of this utility model, a phase wire connection hole 22 may also be provided on the mounting flange 2. The phase wire connection hole 22 may be located on the side of the mounting flange 2 away from the protrusion 12, so that the phase wire C of the motor can extend through the phase wire connection hole 22. Since the phase wire connection hole 22 is located on the side of the mounting flange 2 away from the protrusion 12, the phase wire C will not be interfered with by the protrusion 12, the first cable A, and the second cable B when it extends out of the phase wire connection hole 22, thus avoiding mutual compression and damage between the cables.

[0026] In one embodiment of this utility model, cable fixing heads can be installed on the first cable connection hole 21 and the phase wire connection hole 22 respectively, which serve to fix and protect the cable.

[0027] like Figure 4 As shown, in one embodiment of this utility model, a pulse wheel mounting part 17 is provided at the center of the end cover body 1 to mount the pulse wheel. The motor shaft can also extend from the pulse wheel mounting part 17 through the pulse wheel. The cavity 14 is connected to the pulse wheel mounting part 17. A first sensor mounting part 18 is provided at the connection between the cavity 14 and the pulse wheel mounting part 17. The first sensor mounting part 18 includes a threaded hole 181 for fixing the first sensor, so that the first sensor, such as a speed sensor, can be installed in the cavity 14 through the threaded hole 181 to measure the speed of the shaft. The cable of the first sensor can also be directly connected to the first cable A in the cavity 14, which facilitates the synchronous transmission of the detection result of the first sensor to the motor controller. Moreover, since the first sensor is installed in the cavity 14, the motor end cover and other motor components outside the motor end cover, such as brakes, can provide good protection for the first sensor and prevent other components outside the motor from bumping into the first sensor.

[0028] In one embodiment of this utility model, the mounting flange 2 is further provided with at least one second sensor mounting part 23. The second sensor mounting part 23 includes a boss 231 protruding from the mounting flange 2. The boss 231 may be provided with a mounting position for the second sensor, such as a third through hole opening position. When the third through hole 232 is open, the second sensor can be inserted into the motor end cover through the third through hole 232 to perform data acquisition and other operations. This makes it possible to install the second sensor without opening the motor, and the second sensor can be installed directly through the boss 231, making replacement and installation more convenient. When there is no plan to install the second sensor on the motor end cover, the third through hole opening position can be left unopened. The second sensor can also be a speed sensor. When the motor end cover is provided with both the first sensor mounting part 18 and the second sensor mounting part 23, the speed sensor can be installed on either the first sensor mounting part 18 or the second sensor mounting part 23 according to actual needs. There can also be multiple second sensor mounting parts 23. The protrusions 231 of the multiple second sensor mounting parts 23 can have different shapes to adapt to different models of sensors. It is convenient to install the sensor on one or more of the second sensor mounting parts 23 according to actual needs and sensor models. This embodiment does not impose any limitations.

[0029] In addition, to achieve the above objectives, this utility model also proposes a motor end cover assembly.

[0030] like Figure 5 As shown, the motor end cover assembly of this utility model embodiment includes a motor end cover 10 as described above and a brake 20, with the brake 20 mounted on the outer end face 13 of the end cover body 1.

[0031] The motor end cover assembly according to the present utility model includes the motor end cover 10 described above, and therefore also has the above-mentioned beneficial effects. Moreover, since the brake 20 is installed on the outer end face 13 of the end cover body 1, it will not encroach on the connection space of the internal cables of the motor, thus ensuring sufficient wiring space.

[0032] In one embodiment of this utility model, a rear cover 30 may also be provided outside the brake 20. The rear cover 30 is installed on the outer end face 13 of the end cover body 1 to play a protective role.

[0033] In addition, to achieve the above objectives, this utility model also proposes an electric motor.

[0034] like Figure 6 and Figure 7As shown, the motor of this embodiment includes a rotor-stator assembly and a motor end cover assembly as described above. The motor end cover 10 is mounted on the rotor-stator assembly via a mounting flange 2. Specifically, the rotor-stator assembly may include a housing stator assembly 40 and a rotor assembly 50. The housing stator assembly 40 is provided with a mounting portion adapted to the mounting flange 2, so that the motor end cover 10 is mounted on the rotor-stator assembly via the mounting flange 2 and the mounting portion of the housing stator assembly 40. The rotating shaft of the rotor assembly 50 is connected to the spline block of the brake 20 via a bearing 60 passing through the motor end cover 10.

[0035] The motor according to the present invention, since it includes the motor end cover assembly described above, also has the aforementioned beneficial effects.

[0036] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A motor end cover, comprising an end cover body (1), wherein the edge of the end cover body (1) is provided with a mounting flange (2), characterized in that, The inner end face (11) of the end cap body (1) is provided with a protrusion (12), so that the outer end face (13) of the end cap body (1) is correspondingly formed with a cavity (14). The protrusion (12) is provided with a through hole, so that the motor cable on the inner end face (11) side is accommodated in the cavity (14) through the through hole.

2. The motor end cover according to claim 1, characterized in that, The motor cable includes a first cable (A) and a second cable (B). A first cable connection hole (21) is provided on the mounting flange (2). A first through hole (15) is provided on the side of the protrusion (12) near the first cable connection hole (21). A second through hole (16) is also provided on the other side of the protrusion (12). The first cable (A) of the motor passes through the first cable connection hole (21) and the first through hole (15) in sequence and is connected to the second cable (B) of the motor in the cavity (14). The second cable (B) is connected to the internal circuit of the motor through the second through hole (16).

3. The motor end cover according to claim 2, characterized in that, The mounting flange (2) is also provided with a phase wire connection hole (22), which is located on the side of the mounting flange (2) away from the protrusion (12), so that the phase wire (C) of the motor extends through the phase wire connection hole (22).

4. The motor end cover according to claim 3, characterized in that, Cable fixing heads are respectively installed on the first cable connection hole (21) and the phase wire connection hole (22).

5. The motor end cover according to claim 1, characterized in that, The end cap body (1) has a pulse wheel mounting part (17) at its center. The cavity (14) is connected to the pulse wheel mounting part (17). A first sensor mounting part (18) is provided at the connection between the cavity (14) and the pulse wheel mounting part (17). The first sensor mounting part (18) includes a threaded hole (181) for fixing the first sensor.

6. The motor end cover according to claim 1, characterized in that, The mounting flange (2) is further provided with at least one second sensor mounting part (23), the second sensor mounting part (23) includes a boss (231) protruding from the mounting flange (2), the boss having a mounting position for the second sensor.

7. A motor end cover assembly, characterized in that, include: Motor end cover (10) as described in any one of claims 1-6 above. Brake (20), the brake (20) is mounted on the outer end face (13) of the end cover body (1).

8. The motor end cover assembly according to claim 7, characterized in that, The brake (20) is provided with a rear protective cover (30), which is installed on the outer end face (13) of the end cover body (1).

9. An electric motor, characterized in that, include: Stator-rotor assembly; As described in claim 7 or 8 above, the motor end cover (10) is mounted on the rotor-stator assembly via the mounting flange (2).

10. The motor according to claim 9, characterized in that, The rotor-stator assembly includes: The housing stator assembly (40) is provided with a mounting portion that is adapted to the mounting flange (2); The rotor assembly (50) has its shaft connected to the spline block of the brake (20) via a bearing (60) passing through the motor end cover (10).

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