A rear end cover assembly and motor

Abstract

This utility model relates to the field of motor technology, and particularly to a rear end cover assembly and a motor. The rear end cover includes an integrally formed wiring window on its first surface. A countersunk hole is formed at the edge of the wiring window, and a cavity is formed within the wiring window. A boss is formed on at least one side of the wiring window. An installation slot is formed on the top of the rear end cover. A first recessed stop and a second recessed stop are formed on the second surface of the rear end cover opposite to the first surface. An installation groove is formed at the bottom of the second recessed stop. This utility model's rear end cover provides reasonable space for the installation of a terminal block, rotary transformer, sealing gasket, rear cover plate, signal line, speed sensor, and pulse wheel, resulting in a reasonable overall layout and compact structure.

Description

Technical Field

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

[0002] As a key component of the motor system, the rear end cover of the motor must be designed to balance functionality and manufacturability. Its main functions include supporting the rotor, providing sealing protection, fixing components, and assisting in heat dissipation. Therefore, a rear end cover for the motor is needed to facilitate the installation of various components. Utility Model Content

[0003] This utility model solves the problems in related technologies and proposes a rear end cover assembly and motor. The rear end cover can provide reasonable space for the installation of terminal block, rotary transformer, sealing gasket, rear cover plate, signal line, speed sensor and pulse wheel, so that the overall layout is reasonable and the structure is compact.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a rear end cover assembly, including a rear end cover, a first surface of the rear end cover is provided with an integrally formed wiring window, a countersunk hole is provided at the edge of the wiring window, a cavity is provided inside the wiring window, a boss is provided on at least one side of the wiring window, an installation groove is provided on the top of the rear end cover, and a first recessed stop and a second recessed stop are provided on the second surface of the rear end cover opposite to the first surface, and an installation groove is provided at the bottom of the second recessed stop.

[0005] As a preferred embodiment, the wiring window is U-shaped.

[0006] As a preferred embodiment, the two bosses are symmetrically distributed on both sides of the wiring window, or one boss is distributed on one side of the wiring window.

[0007] As a preferred embodiment, the rear cover assembly further includes a terminal block, a rotary transformer, a sealing gasket, a rear cover plate, and a signal line. The terminal block is installed in the mounting slot, the rotary transformer is installed in the cavity, and the sealing gasket and the rear cover plate are sequentially and detachably installed in the recess. The signal line is electrically connected to the rotary transformer and is installed on the boss.

[0008] As a preferred embodiment, the rotary transformer is replaced by a speed sensor and a pulse wheel, with the speed sensor mounted on either side of the boss and the pulse wheel mounted inside the cavity.

[0009] In another aspect, this utility model also provides a motor, including the rear end cover assembly as described above.

[0010] As a preferred embodiment, the device also includes a housing and a front cover. Both ends of the housing are provided with a first convex stop and a second convex stop. The housing is secured to the corresponding stops on the front cover and the rear cover via the first convex stop and the second convex stop, and can be detachably installed via bolts.

[0011] As a preferred embodiment, the outer wall of the housing is provided with heat dissipation ribs and mounting protrusions at intervals along the circumference, and each heat dissipation rib and mounting protrusion is provided along the length direction of the housing, and the second protrusion stop is provided at both ends of the heat dissipation rib and mounting protrusion.

[0012] As a preferred embodiment, the two mounting protrusions at the bottom are detachably mounted with feet by bolts. Each foot includes a base body and a first support portion and a second support portion disposed on both sides of the base body. The bottom of the base body and the second support portion are provided with weight-reducing grooves, and the top of the base body is provided with protrusions.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The first side of the rear end cover of this utility model is provided with an integrally formed wiring window, providing sufficient operational space for stator wiring and facilitating the installation of stator output terminals and terminal blocks. A countersunk hole is provided at the edge of the wiring window for installing the rear cover plate and sealing gasket, meeting higher protection requirements. A chamber is provided inside the wiring window, providing a relatively independent space for installing a rotary transformer. Bosses are provided on both sides of the wiring window, allowing for the installation of a rotary transformer or speed sensor at any of the bosses according to the output requirements. The top of the rear end cover has an installation slot for installing the terminal block. The second side of the rear end cover, opposite the first side, has a first recessed stop and a second recessed stop. This double-recessed stop combination improves the structural rigidity of the rear end cover. An installation groove is provided at the bottom of the second recessed stop for installing an O-ring seal, improving the waterproof rating at the end cover stop. The housing body... Both ends of the base are equipped with stop marks, as are the ends of the heat dissipation fins and mounting protrusions. This double-stop design effectively utilizes the heat dissipation fins and mounting protrusions to form a cage-like body, greatly improving the overall structural strength of the motor. At the same time, it can reduce the wall thickness of the housing body and reduce material costs. Several heat dissipation fins and mounting protrusions are arranged along the circumferential direction on the outer wall of the housing body. The heat dissipation fins can be used for motor heat dissipation, and the mounting protrusions are used for installation with the front and rear end covers and the worktable. The support parts on both sides of the base body form a double support between the two support parts, which provides more stable support and avoids deformation caused by long-term vibration of single-leg support. Weight reduction grooves are opened at the bottom of the base body and the second support part, which can effectively reduce the material used for the base and reduce material costs, while also ensuring the structural strength of the base. The top of the base body is equipped with a protrusion, which can abut against the mounting protrusions on the housing when installed with the housing, so as to play a supporting role. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of the rear end cover of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the rear end cover of this utility model;

[0016] Figure 3 This is an exploded view of the rear cover assembly of Embodiment 1 of this utility model;

[0017] Figure 4 This is a schematic diagram of the rear end cover assembly of Embodiment 1 of this utility model;

[0018] Figure 5 This is an exploded view of the rear end cover assembly of Embodiment 2 of this utility model;

[0019] Figure 6 This is a schematic diagram of the rear end cover assembly of Embodiment 2 of this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the motor of this utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the casing of this utility model;

[0022] Figure 9 This is a schematic diagram of the structure of the base of this utility model.

[0023] In the picture:

[0024] 1. Rear end cover; 11. Wiring window; 12. Countersunk hole; 13. Chamber; 14. Boss; 15. Mounting slot; 16. First recessed stop; 17. Second recessed stop; 18. Mounting slot; 2. Wiring board; 3. Rotary transformer; 31. Rotary transformer mounting plate; 4. Sealing gasket; 5. Rear cover plate; 6. Signal line; 7. Housing; 71. First raised stop; 72. Second raised stop; 73. Heat dissipation fin; 74. Mounting protrusion; 8. Front end cover; 9. Foot; 91. Foot body; 92. First support part; 93. Second support part; 94. Weight reduction groove; 95. Protrusion; 10. Speed ​​sensor; 101. Pulse wheel. Detailed Implementation

[0025] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0031] Example 1

[0032] like Figures 1 to 4 As shown, a rear end cover assembly includes a rear end cover 1, a terminal block 2, a rotary transformer 3, a sealing gasket 4, a rear cover plate 5, and a signal line 6. The first surface of the rear end cover 1 has an integrally formed U-shaped wiring window 11, which provides sufficient operating space for the stator wiring, facilitating the installation of the stator output terminals and the terminal block 2. A countersunk hole 12 is provided at the edge of the wiring window 11, and the sealing gasket 4 and the rear cover plate 5 are sequentially installed in the countersunk hole 12 via bolts to meet higher protection requirements. A chamber 13 is provided inside the wiring window 11, and a rotary transformer 3 is installed in the chamber 13 via a rotary transformer mounting plate 31. The rotary transformer mounting plate 31 is a circle with a notch and is secured to the outer ring of the rotary transformer 3. The rotary transformer is secured to the outer ring of the rotary transformer via bolts. The mounting plate 31 is fixed inside the chamber 13. Bosses 14 are symmetrically arranged on both sides of the wiring window 11. Holes are provided on the bosses 14, allowing the rotary transformer to be installed on either side. Alternatively, bosses 14 can be installed on only one side, as shown in Figure 4. The signal line 6 passes through the holes on the bosses 14 and is electrically connected to the rotary transformer 3. A mounting slot 15 is provided on the top of the rear end cover 1, and a wiring plate 2 is installed inside the mounting slot 15. A first recessed stop 16 and a second recessed stop 17 are provided on the second surface of the rear end cover 1, opposite to the first surface. This double-recessed stop design of the rear end cover improves its structural rigidity. A mounting groove 18 is provided at the bottom of the second recessed stop 17 for installing an O-ring seal, improving the waterproof rating at the stop of the rear end cover.

[0033] Example 2

[0034] like Figure 5 and 6 As shown, unlike Embodiment 1, in this embodiment, the rotary transformer 3 is replaced by a speed sensor 10 and a pulse wheel 101. The speed sensor 10 is installed on either side of the boss 14, and the pulse wheel 101 is installed inside the chamber 13.

[0035] Example 3

[0036] like Figure 1-4 As shown in 7-9, another aspect of this utility model also provides a motor, including the rear end cover assembly in Embodiment 1.

[0037] In addition, it also includes a housing 7 and a front cover 8. Both ends of the housing 7 are formed with a first convex stop 71 and a second convex stop 72. The housing 7 is fastened to the corresponding stops on the front cover 8 and the rear cover 1 (i.e., the first concave stop 16 on the rear cover 1, and the concave stop on the front cover 8 is not shown) through the first convex stop 71 and the second convex stop 72 and can be detached and installed by bolts. The outer wall of the housing 7 is provided with heat dissipation ribs 73 and mounting protrusions 74 for motor heat dissipation at intervals along the circumference. Each heat dissipation rib 73 and mounting protrusion 74 is arranged along the length direction of the housing 7. The second convex stop 72 is provided at both ends of the heat dissipation rib 73 and the mounting protrusion 74. The mounting protrusion 74 is provided with screw holes. The three can be fastened by bolts passing through the screw holes on the front cover 8, the rear cover 1 and the mounting protrusion 74. This double stop design of the housing 7 effectively utilizes the heat dissipation ribs 73 and the mounting protrusions 74 to form a cage-shaped body, which greatly improves the overall structural strength of the motor, and at the same time can reduce the wall thickness of the housing 7 and reduce material costs.

[0038] In one embodiment, a foot 9 is detachably mounted on two mounting protrusions 74 at the bottom via bolts. The foot 9 includes a foot body 91 and a first support portion 92 and a second support portion 93 disposed on both sides of the foot body 91. The two support portions form a double support, which provides more stable support and avoids deformation caused by long-term vibration of a single foot support. A weight-reducing groove 94 is provided at the bottom of the foot body 91 and the second support portion 93. The weight-reducing groove 94 can be rectangular, U-shaped, triangular, arc-shaped, trapezoidal, etc. By reasonably designing the weight-reducing groove 94, the material used for the foot 9 can be effectively reduced, reducing material costs, while also ensuring the structural strength of the foot. A protrusion 95 is provided at the top of the foot body 91. When installed with the housing 7, the protrusion 95 can abut against the mounting protrusions 74 on the housing 7 to provide support.

[0039] Example 4

[0040] like Figure 5-9As shown, unlike Embodiment 3, the motor in this embodiment includes the rear end cover assembly in Embodiment 2.

[0041] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A rear end cover assembly, characterized in that: Includes a rear end cover (1), the first side of the rear end cover (1) is provided with an integrally formed wiring window (11), the edge of the wiring window (11) is provided with a countersunk hole (12), the wiring window (11) is provided with a cavity (13), at least one side of the wiring window (11) is provided with a boss (14), the top of the rear end cover (1) is provided with an installation slot (15), the second side of the rear end cover (1) opposite to the first side is provided with a first recessed stop (16) and a second recessed stop (17), the bottom of the second recessed stop (17) is provided with an installation groove (18).

2. The rear cover assembly according to claim 1, characterized in that: The wiring window (11) is U-shaped.

3. The rear cover assembly according to claim 1, characterized in that: The two protrusions (14) are symmetrically distributed on both sides of the wiring window (11) or one of the protrusions (14) is distributed on one side of the wiring window (11).

4. The rear cover assembly according to claim 1, characterized in that: The rear cover assembly also includes a terminal block (2), a rotary transformer (3), a sealing gasket (4), a rear cover plate (5), and a signal line (6). The terminal block (2) is installed in the mounting slot (15), the rotary transformer (3) is installed in the chamber (13), and the sealing gasket (4) and the rear cover plate (5) are sequentially and detachably installed in the countersunk hole (12). The signal line (6) is electrically connected to the rotary transformer (3) and is installed on the boss (14).

5. The rear end cover assembly according to claim 4, characterized in that: The rotary transformer (3) is replaced by a speed sensor (10) and a pulse wheel (101). The speed sensor (10) is installed on either side of the boss (14), and the pulse wheel (101) is installed in the chamber (13).

6. An electric motor, characterized in that: Includes the rear cover assembly as described in any one of claims 1-5.

7. The motor according to claim 6, characterized in that: It also includes a housing (7) and a front cover (8). Both ends of the housing (7) are formed with a first convex stop (71) and a second convex stop (72). The housing (7) is fastened to the corresponding stops on the front cover (8) and the rear cover (1) by the first convex stop (71) and the second convex stop (72) and can be detached and installed by bolts.

8. The motor according to claim 7, characterized in that: The outer wall of the housing (7) is provided with heat dissipation ribs (73) and mounting protrusions (74) at intervals along the circumference. Each heat dissipation rib (73) and mounting protrusion (74) is provided along the length direction of the housing (7). The second protrusion stop (72) is provided at both ends of the heat dissipation rib (73) and mounting protrusion (74).

9. The motor according to claim 8, characterized in that: The two mounting protrusions (74) at the bottom are detachably mounted with feet (9) by bolts. The feet (9) include a base body (91) and a first support part (92) and a second support part (93) disposed on both sides of the base body (91). The bottom of the base body (91) and the second support part (93) are provided with weight reduction grooves (94), and the top of the base body (91) is provided with protrusions (95).

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