A detachable stator coil of a direct current motor

Abstract

The utility model discloses a kind of detachable stator coil of direct current motor, it is related to the installation and dismounting field of stator, including the stator core of installation in the inner wall of shell, the front end of stator core and rear end are connected by fixed mechanism, the fixed mechanism is used to fix the multiple silicon steel sheets of the stator core, the fixed mechanism is connected with the shell by positioning mechanism, the front end of the shell is fixedly installed with front end cover, the rear end of the shell is fixedly installed with rear end cover, the end face of the shell is integrally formed with the outward protruding front pressing plate on the front end cover, the end face of the shell is integrally formed with the outward protruding rear pressing plate on the rear end cover. The utility model can realize the boltless fixing of stator core by setting positioning mechanism, front pressing plate and rear pressing plate, its fixed effect is stable, and it will not appear to shake, to realize the process of convenient installation and dismounting.

Description

Technical Field

[0001] This utility model relates to the field of stator installation and disassembly, specifically a detachable stator coil for a DC motor. Background Technology

[0002] The stator core of a DC motor is usually fixed to the inner cavity of the housing by bolts. When a short circuit or open circuit occurs in the coil on the stator core slot, the stator core and coil need to be disassembled. This requires the removal of multiple fixing bolts, making the installation and disassembly process inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a detachable stator coil for a DC motor in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detachable stator coil for a DC motor, comprising a stator core installed on the inner wall of a housing, the front end and rear end of the stator core being connected by a fixing mechanism, the fixing mechanism being used to fix multiple silicon steel sheets of the stator core, the fixing mechanism being connected to the housing by a positioning mechanism, a front end cover being fixedly installed on the front end of the housing, a rear end cover being fixedly installed on the rear end of the housing, a front pressure plate protruding outwardly integrally formed on the end face of the front end cover near the housing, and a rear pressure plate protruding outwardly integrally formed on the end face of the rear end cover near the housing.

[0005] As a further embodiment of this utility model: the fixing mechanism includes a front clamping plate located at the front end of the stator core, a limiting post that extends through to the outside of the back end of the stator core is welded to one end of the front clamping plate near the stator core, a rear clamping plate that limits the back end of the stator core is threaded onto the outer wall of the limiting post, and a clamping nut that clamps the rear clamping plate is threaded onto the threaded part of the outer wall of the limiting post.

[0006] As a further embodiment of this utility model: the positioning mechanism includes a front positioning post integrally formed on the front end of the protruding ring on the inner wall of the outer shell and a rear positioning ear integrally formed on the back end of the protruding ring on the inner wall of the outer shell.

[0007] As a further embodiment of this utility model: the positioning mechanism also includes a plurality of front positioning ears integrally formed on the outer periphery of the front clamping plate, and the interior of the front positioning ears is provided with a first circular hole that mates with the outer periphery of the front positioning post;

[0008] The positioning mechanism also includes a plurality of rear positioning posts integrally formed on the back end of the rear clamping plate, the outer periphery of the rear positioning posts being inserted into the second circular hole in the rear positioning ear.

[0009] As a further embodiment of this utility model: the end face of the rear pressure plate near the outer shell is provided with a receiving groove for accommodating the limiting post and the clamping nut, and the end face of the rear pressure plate near the outer shell is provided with a positioning hole for accommodating the end of the rear positioning post.

[0010] As a further improvement of this utility model, coils are wound on the channels of the stator core.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting up a positioning mechanism, a front pressure plate and a rear pressure plate, boltless fixing of the stator core can be achieved. The fixing effect is stable and there will be no shaking, thus realizing a convenient installation and disassembly process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0015] Figure 3 This is a schematic diagram of the installation of the front positioning post of this utility model;

[0016] Figure 4 This is a schematic diagram of the installation of the rear positioning post of this utility model.

[0017] In the diagram: 1. Stator core; 2. Outer shell; 3. Front end cover; 4. Front pressure plate; 5. Rear end cover; 6. Rear clamping plate; 7. Limiting post; 8. Clamping nut; 9. Front positioning ear; 10. Front positioning post; 11. Rear pressure plate; 12. Receiving groove; 13. Positioning hole; 14. Rear positioning post; 15. Rear positioning ear; 16. Coil; 17. Front clamping plate. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-4In this embodiment of the present invention, a detachable stator coil of a DC motor includes a stator core 1 installed on the inner wall of a housing 2. The front end and rear end of the stator core 1 are connected by a fixing mechanism. The fixing mechanism is used to fix multiple silicon steel sheets of the stator core 1. The fixing mechanism is connected to the housing 2 by a positioning mechanism. A front end cover 3 is fixedly installed on the front end of the housing 2, and a rear end cover 5 is fixedly installed on the rear end of the housing 2. A front pressure plate 4 protruding outward is integrally formed on the end face of the front end cover 3 near the end face of the housing 2. A rear pressure plate 11 protruding outward is integrally formed on the end face of the rear end cover 5 near the end face of the housing 2. A coil 16 is wound on the slot of the stator core 1.

[0020] In this embodiment: First, when installing the stator core 1, the front end cover 3 and the rear end cover 5 are not connected to the outer shell 2. Then, the stator core 1 with the coil 16 wound in the channel is inserted into the inner cavity of the outer shell 2. At this time, the positioning mechanism restricts the stator core 1 to a preset position in the inner cavity of the outer shell 2. Then, the front end cover 3 and the rear end cover 5 can be installed at both ends of the outer shell 2. After the front end cover 3 and the rear end cover 5 are effectively fixed, the front pressure plate 4 and the rear pressure plate 11 press and limit the stator core 1 positioned in the preset position. When it is necessary to disassemble the stator core 1, the stator core 1 can be disassembled by opening the front end cover 3. The installation and disassembly process is relatively convenient.

[0021] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4 The fixing mechanism includes a front clamping plate 17 located at the front end of the stator core 1. A limiting post 7 that extends through to the outside of the back end of the stator core 1 is welded to one end of the front clamping plate 17 near the stator core 1. A rear clamping plate 6 that limits the back end of the stator core 1 is threaded onto the outer wall of the limiting post 7. A clamping nut 8 that clamps the rear clamping plate 6 is threaded onto the threaded part of the outer wall of the limiting post 7.

[0022] In this embodiment: when assembling multiple silicon steel sheets that make up the stator core 1, multiple silicon steel sheets are fitted onto the outer wall of the limiting post 7. At this time, the front clamping plate 17 limits the silicon steel sheet at the frontmost end. After all the silicon steel sheets are stacked, the rear clamping plate 6 is fitted onto the outer wall of the limiting post 7 until the rear clamping plate 6 limits the last silicon steel sheet. Finally, the clamping nut 8 is tightened onto the threaded part of the limiting post 7 and completely tightened. At this time, the stator core 1 can be formed.

[0023] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4The positioning mechanism includes a front positioning post 10 integrally formed on the front end of the protruding ring on the inner wall of the outer shell 2 and a rear positioning ear 15 integrally formed on the back end of the protruding ring on the inner wall of the outer shell 2. The positioning mechanism also includes a plurality of front positioning ears 9 integrally formed on the outer periphery of the front pressing plate 17, and the interior of the front positioning ear 9 is provided with a first circular hole that mates with the outer periphery of the front positioning post 10. The positioning mechanism also includes a plurality of rear positioning posts 14 integrally formed on the back end of the rear pressing plate 6, and the outer periphery of the rear positioning posts 14 is inserted into the second circular hole in the rear positioning ear 15.

[0024] In this embodiment: When installing the stator core 1, the stator core 1 is placed into the inner cavity of the outer shell 2. During the process of installing the stator core 1 into place, the front clamping plate 17 drives the front positioning ear 9 to dock with the front positioning post 10 until the first round hole is fully inserted into the outer wall of the front positioning post 10. At this time, the front end of the front positioning post 10 is flush with the front end of the front positioning ear 9.

[0025] Simultaneously, the rear positioning pin 14 is inserted into the second round hole of the rear positioning ear 15 until the rear positioning ear 15 contacts the rear clamping plate 6. At this time, the stator core 1 is moved to the preset fixed position. Then, the front cover 3 and the rear cover 5 are installed with bolts respectively. After the front cover 3 and the rear cover 5 are installed, the front pressure plate 4 and the rear pressure plate 11 press the front clamping plate 17 and the rear clamping plate 6 respectively. At this time, the position of the stator core 1 is limited.

[0026] Please refer to this carefully. Figure 3 and Figure 3 The rear pressure plate 11 has a receiving groove 12 on the end face near the outer shell 2 to accommodate the limiting post 7 and the clamping nut 8, and a positioning hole 13 on the end face near the outer shell 2 to accommodate the end of the rear positioning post 14.

[0027] In this embodiment: Before installing the stator core 1, the rear end cover 5 can be fixedly installed first. When installing the stator core 1, the design of the receiving groove 12 and the positioning hole 13 can avoid interference during the installation process.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A detachable stator coil for a DC motor, comprising a stator core (1) mounted on the inner wall of a housing (2), characterized in that, The front end and rear end of the stator core (1) are connected by a fixing mechanism. The fixing mechanism is used to fix multiple silicon steel sheets of the stator core (1). The fixing mechanism is connected to the outer shell (2) by a positioning mechanism. A front end cover (3) is fixedly installed on the front end of the outer shell (2), and a rear end cover (5) is fixedly installed on the rear end of the outer shell (2). A front pressure plate (4) protruding outward is integrally formed on the end face of the front end cover (3) near the end face of the outer shell (2), and a rear pressure plate (11) protruding outward is integrally formed on the end face of the rear end cover (5) near the end face of the outer shell (2).

2. The detachable stator coil of a DC motor according to claim 1, characterized in that, The fixing mechanism includes a front clamping plate (17) located at the front end of the stator core (1). A limiting post (7) is welded to one end of the front clamping plate (17) near the stator core (1) and extends to the outside of the back end of the stator core (1). A rear clamping plate (6) for limiting the back end of the stator core (1) is threaded onto the outer wall of the limiting post (7). A clamping nut (8) for clamping the rear clamping plate (6) is threaded onto the threaded part of the outer wall of the limiting post (7).

3. The detachable stator coil of a DC motor according to claim 2, characterized in that, The positioning mechanism includes a front positioning post (10) integrally formed on the front end of the protruding ring on the inner wall of the outer shell (2) and a rear positioning ear (15) integrally formed on the back end of the protruding ring on the inner wall of the outer shell (2).

4. A detachable stator coil for a DC motor according to claim 3, characterized in that, The positioning mechanism also includes a plurality of front positioning ears (9) integrally formed on the outer periphery of the front clamping plate (17), and the interior of the front positioning ears (9) is provided with a first circular hole that mates with the outer periphery of the front positioning post (10). The positioning mechanism also includes a plurality of rear positioning posts (14) integrally formed on the back end of the rear clamping plate (6), the outer periphery of the rear positioning posts (14) being inserted into the second round hole in the rear positioning ear (15).

5. A detachable stator coil for a DC motor according to claim 4, characterized in that, The rear pressure plate (11) has a receiving groove (12) on the end face near the outer shell (2) to accommodate the limiting post (7) and the clamping nut (8), and a positioning hole (13) on the end face near the outer shell (2) to accommodate the end of the rear positioning post (14).

6. A detachable stator coil for a DC motor according to claim 1, characterized in that, The stator core (1) has coils (16) wound on its slots.

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