Direct-current brushless motor convenient to disassemble, maintain

Abstract

The utility model relates to the direct current brushless motor field's convenient to dismouting maintenance's direct current brushless motor, including end cover, casing and rotor, the inner chamber of end cover is provided with stator, the outside of stator is evenly provided with sliding block, the inner chamber of casing is provided with the sliding slot, the sliding block is connected with sliding slot slidingly, and when assembling, can through this sliding fit quick stator positioning installation in casing inner chamber, avoid the stator installation and appear the deviation, simultaneously provide the orientation for the subsequent stator's dismounting, improve the dismounting convenience, the upper end both sides of end cover are connected with the limiting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of brushless DC motors, and specifically to a brushless DC motor that is easy to disassemble and maintain. Background Technology

[0002] DC brushless motors are widely used in industrial automation equipment, home appliances, electric vehicles and other fields. In their internal structure, the stator, as the core power component, needs to be firmly assembled in the motor housing to ensure magnetic field stability and power output. The ease of disassembly and maintenance of the stator is directly related to the daily maintenance efficiency and long-term operating cost of the motor.

[0003] In the existing technology, the stator and housing of a brushless DC motor lack a dedicated positioning and guiding structure during assembly, which makes the stator prone to positional misalignment during installation. This increases assembly time and hinders subsequent stator disassembly. At the same time, locking the housing and stator mostly relies on bolt tightening or simple snap-fit ​​methods. Bolt tightening requires additional tools and the disassembly and assembly steps are cumbersome, while simple snap-fit ​​methods are prone to loosening under motor vibration, causing stator displacement and affecting the stability of motor operation. Ultimately, this results in low overall motor disassembly and maintenance efficiency and high operational difficulty. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned defects and provide a DC brushless motor that is easy to disassemble and maintain. It solves the technical problems of existing technologies, such as the need for additional tools to tighten bolts, cumbersome disassembly and assembly steps, and the easy loosening of simple snap-fit ​​connections under motor vibration, which causes stator displacement, affects the stability of motor operation, and ultimately results in low overall disassembly and maintenance efficiency and high operation difficulty.

[0005] The purpose of this utility model is achieved through the following means: a DC brushless motor that is easy to disassemble and maintain, including an end cover, a housing, and a rotor. The end cover is located at the upper end of the housing, the rotor is located in the inner cavity of the housing, and a stator is located in the inner cavity of the housing. Sliding blocks are evenly arranged on the outside of the stator, and a sliding groove is opened in the inner cavity of the housing. The sliding blocks are slidably connected to the sliding groove. During assembly, the stator can be quickly positioned and installed in the inner cavity of the housing through this sliding fit, avoiding the stator from shifting during installation. At the same time, it provides guidance for the subsequent disassembly of the stator, improving the convenience of disassembly and assembly. Limiting mechanisms are connected to both sides of the upper end of the end cover.

[0006] The limiting mechanism includes a push rod and a pressure plate. The push rod is slidably disposed on the upper end of the end cover. A first elastic element is connected between the push rod and the end cover. The pressure plate is inserted into the inner cavity of the end cover, and a clamping plate is connected to the bottom of the pressure plate. The stator and the outer surface of the housing are both provided with a slot adapted to the clamping plate, and a second elastic element is connected between the clamping plate and the end cover.

[0007] During assembly, after the end cover closes the top of the housing, the push rod is returned to its original position. The push rod can drive the pressure plate to descend, which in turn drives the clamping plate to insert into the slot, thereby locking the position of the housing and the stator and preventing the stator from shifting during motor operation. During disassembly, the push rod is pulled, and the clamping plate returns to its original position under the elastic force of the second elastic element, disengaging from the slot and releasing the lock on the housing and the stator. The limit state switching can be completed without the need for additional tools.

[0008] Furthermore, the top of the end cap is provided with a track groove, which is slidably connected to the bottom of the push rod. The first elastic element is disposed inside the track groove. The track groove can accurately guide the sliding direction of the push rod, preventing jamming or deviation during the sliding of the push rod and ensuring that the push rod can stably drive the pressure plate. At the same time, the track groove can accommodate and limit the first elastic element, preventing the elastic element from being deformed by external force or falling out of the installation position, and ensuring that the first elastic element has a stable reset effect on the push rod.

[0009] Furthermore, the inner cavity of the end cap is provided with a guide groove, and a guide block is slidably connected to the inner cavity of the guide groove. The guide block is connected to the locking plate. When the locking plate moves, it will drive the guide block to slide along the guide groove. The guide groove can limit the movement trajectory of the guide block, thereby ensuring that the locking plate can be accurately inserted into or disengaged from the locking slot, and preventing the locking plate from failing to cooperate with the locking slot due to offset. The second elastic element is disposed between the guide block and the guide groove. The outer side of the locking plate is provided with a reinforcing arm, which can enhance the structural strength of the locking plate, prevent the locking plate from bending or breaking after being subjected to locking pressure for a long time, and extend the service life of the limiting mechanism.

[0010] Furthermore, the top of the pressure plate is designed with a slope. This sloped structure can convert the horizontal sliding force of the push rod into the vertical downward force of the pressure plate, reducing the resistance of the push rod driving the pressure plate and making the descent of the pressure plate smoother. The top of the pressure plate is provided with a wear-resistant strip, which can reduce the wear caused by long-term contact and sliding between the push rod and the top of the pressure plate, prevent the gap between the two from increasing due to wear, and ensure the stability of power transmission.

[0011] Furthermore, a sealing ring is provided between the end cover and the housing. The sealing ring can fill the gap between the end cover and the housing, enhance the overall sealing of the motor, prevent external dust and moisture from entering the motor and corroding the internal components, and reduce noise leakage during motor operation. In addition, the housing is provided with reinforcing ribs on the outside, which can improve the deformation resistance of the housing and prevent the housing from deforming due to external impact or motor vibration, ensuring the stability of the internal cavity space of the housing and not affecting the coordinated operation of the stator and rotor. A capacitor and an output terminal are respectively provided on the top two sides of the end cover. The capacitor is provided with a protective sleeve, which can physically protect the capacitor from damage caused by external impact, friction or oil contamination, and ensure the stable operation of the motor circuit.

[0012] Furthermore, a push plate is connected to the outside of the push rod. The push plate increases the contact area between the operator and the push rod, allowing force to be applied without precise alignment of the push rod, thus improving the convenience of pushing or pulling the push rod. The outside of the push plate is equipped with an anti-slip sleeve, which increases the friction between the hand and the push plate, preventing the hand from slipping during operation. Especially when the hands are oily or sweaty, the push plate can still be stably controlled, improving operational safety.

[0013] The beneficial effects of this utility model are:

[0014] This easy-to-disassemble and maintain brushless DC motor uses a slider on the outside of the stator to slide into a groove in the inner cavity of the housing. During assembly, the stator can be quickly positioned and installed in the inner cavity of the housing, effectively preventing stator misalignment and providing guidance for subsequent stator disassembly, thus improving the convenience of stator assembly and disassembly. With the help of the limiting mechanisms on both sides of the end cover, after the end cover closes the top of the housing, the push rod returns to its original position, driving the pressure plate to descend and causing the locking plate to insert into the slots on the outside of the stator and housing, thus locking the position of the housing and stator and preventing stator displacement during motor operation, ensuring stable motor operation. During disassembly, simply pulling the push rod will cause the locking plate to return to its original position and disengage from the slot under the elastic force of the second elastic element, completing the limit state switching without the need for additional tools, further reducing the difficulty of motor assembly and disassembly, and improving the overall efficiency and convenience of motor assembly and disassembly. Attached Figure Description

[0015] Figure 1 This is a front view of the DC brushless motor of this utility model, which is easy to disassemble and maintain;

[0016] Figure 2 This is a schematic diagram of the end cover and housing of the DC brushless motor, which are designed for easy disassembly and maintenance according to this utility model, after disassembly.

[0017] Figure 3 This is a partial cross-sectional view of the DC brushless motor housing for easy disassembly and maintenance according to this utility model;

[0018] Figure 4 This is an external schematic diagram of the DC brushless motor limit mechanism of this utility model, which is easy to disassemble and maintain.

[0019] In the figure, 1 is the end cap; 2 is the housing; 21 is the slide groove; 3 is the rotor; 31 is the output end; 32 is the capacitor; 4 is the stator; 41 is the slider; 5 is the limiting mechanism; 51 is the push rod; 52 is the first elastic element; 53 is the push plate; 54 is the pressure plate; 55 is the clamping plate; 56 is the reinforcing arm; 57 is the guide block; and 58 is the second elastic element. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In this embodiment, refer to Figure 1 and Figure 2 The specific implementation of the easy-to-disassemble and maintain DC brushless motor includes an end cover 1, a housing 2, and a rotor 3. The end cover 1 is located at the upper end of the housing 2, and the rotor 3 is located in the inner cavity of the housing 2. The inner cavity of the housing 2 is provided with a stator 4, and sliders 41 are evenly arranged on the outside of the stator 4. The inner cavity of the housing 2 is provided with a sliding groove 21, and the sliders 41 are slidably connected to the sliding groove 21. During assembly, the stator 4 can be quickly positioned and installed in the inner cavity of the housing 2 through this sliding fit, avoiding the stator 4 from shifting during installation. At the same time, it provides guidance for the subsequent disassembly of the stator 4, improving the ease of disassembly and assembly. Limiting mechanisms 5 are connected to both sides of the upper end of the end cover 1.

[0022] The limiting mechanism 5 includes a push rod 51 and a pressure plate 54. The push rod 51 is slidably disposed on the upper end of the end cover 1. A first elastic element 52 is connected between the push rod 51 and the end cover 1. The pressure plate 54 is inserted into the inner cavity of the end cover 1, and a retaining plate 55 is connected to the bottom of the pressure plate 54. The stator 4 and the outer surface of the housing 2 are both provided with a retaining groove that matches the retaining plate 55. A second elastic element 58 is connected between the retaining plate 55 and the end cover 1.

[0023] Reference Figure 3 and Figure 4 During assembly, after the end cover 1 closes the top of the housing 2, the push rod 51 is returned to its original position. The push rod 51 can drive the pressure plate 54 to descend, which in turn drives the locking plate 55 to insert into the slot, thereby locking the position of the housing 2 and the stator 4 and preventing the stator 4 from shifting during motor operation. During disassembly, the push rod 51 is pulled, and the locking plate 55 returns to its original position under the elastic force of the second elastic element 58, disengaging from the slot and releasing the lock on the housing 2 and the stator 4. The limit state switching can be completed without the need for additional tools.

[0024] The top of the end cap 1 is provided with a track groove, which is slidably connected to the bottom of the push rod 51. The first elastic element 52 is disposed inside the track groove. The track groove can accurately guide the sliding direction of the push rod 51, preventing the push rod 51 from getting stuck or deviating when sliding, and ensuring that the push rod 51 can stably drive the pressure plate 54. At the same time, the track groove can store and limit the first elastic element 52, preventing the elastic element from being deformed by external force or falling out of the installation position, and ensuring that the first elastic element 52 has a stable reset effect on the push rod 51.

[0025] The inner cavity of the end cap 1 is provided with a guide groove, and a guide block 57 is slidably connected to the inner cavity of the guide groove. The guide block 57 is connected to the locking plate 55. When the locking plate 55 moves, it will drive the guide block 57 to slide along the guide groove. The guide groove can limit the movement trajectory of the guide block 57, thereby ensuring that the locking plate 55 can be accurately inserted into or disengaged from the slot, and preventing the locking plate 55 from being unable to cooperate with the slot due to offset. The second elastic element 58 is provided between the guide block 57 and the guide groove. The outer side of the locking plate 55 is provided with a reinforcing arm 56. The reinforcing arm 56 can enhance the structural strength of the locking plate 55, prevent the locking plate 55 from bending or breaking after being subjected to locking pressure for a long time, and extend the service life of the limiting mechanism 5.

[0026] The top of the pressure plate 54 is designed with a slope. This slope structure can convert the horizontal sliding force of the push rod 51 into the vertical downward force of the pressure plate 54, reduce the resistance of the push rod 51 driving the pressure plate 54, and make the descent of the pressure plate 54 smoother. The top of the pressure plate 54 is provided with a wear-resistant strip. The wear-resistant strip can reduce the wear caused by long-term contact and sliding between the push rod 51 and the top of the pressure plate 54, prevent the gap between the two from increasing due to wear, and ensure the stability of power transmission.

[0027] A sealing ring is provided between the end cover 1 and the housing 2. The sealing ring can fill the gap between the end cover 1 and the housing 2, enhance the overall sealing of the motor, prevent external dust and moisture from entering the motor and corroding the internal parts, and reduce noise leakage during motor operation. In addition, the housing 2 is provided with reinforcing ribs on the outside. The reinforcing ribs can improve the deformation resistance of the housing 2, prevent the housing 2 from being deformed by external impact or motor vibration, ensure the stability of the internal space of the housing 2, and not affect the coordinated operation of the stator 4 and rotor 3. A capacitor 32 and an output terminal 31 are respectively provided on the top two sides of the end cover 1. The capacitor 32 is provided with a protective sleeve. The protective sleeve can provide physical protection for the capacitor 32, prevent the capacitor 32 from being damaged by external impact, friction or oil contamination, and ensure the stable operation of the motor circuit.

[0028] The push rod 51 is externally connected to a push plate 53, which increases the contact area between the operator and the push rod 51, allowing force to be applied without precise alignment with the push rod 51, thus improving the convenience of pushing or pulling the push rod 51. The push plate 53 is equipped with an anti-slip sleeve, which increases the friction between the hand and the push plate 53, preventing the hand from slipping during operation. Especially when the hands are oily or sweaty, the push plate 53 can still be stably controlled, improving operational safety.

[0029] First, the stator 4 is assembled inside the housing 2 through the cooperation of the slider 41 and the groove 21. Then, the rotor 3 is connected to the stator 4. The top of the housing 2 is sealed by the end cover 1. Then, the push rod 51 is returned to its original position. The push rod 51 drives the pressure plate 54 to descend, which in turn drives the clamping plate 55 to move. The clamping plate 55 locks the positions of the housing 2 and the stator 4. When disassembly is required, the push rod 51 is pulled, and the clamping plate 55 returns to its original position through the second elastic element 58, releasing the lock on the housing 2 and the stator 4.

[0030] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A DC brushless motor that is easy to disassemble and maintain, comprising an end cover, a housing, and a rotor, wherein the end cover is disposed at the upper end of the housing, and the rotor is disposed in the inner cavity of the housing, characterized in that: The inner cavity of the housing is provided with a stator, and the outside of the stator is uniformly provided with sliders. The inner cavity of the housing is provided with a sliding groove, and the sliders are slidably connected to the sliding groove. Limiting mechanisms are connected to both sides of the upper end of the end cover. The limiting mechanism includes a push rod and a pressure plate. The push rod is slidably disposed on the upper end of the end cover. A first elastic element is connected between the push rod and the end cover. The pressure plate is inserted into the inner cavity of the end cover, and a retaining plate is connected to the bottom of the pressure plate. The stator and the outer surface of the housing are both provided with retaining grooves that are adapted to the retaining plate, and a second elastic element is connected between the retaining plate and the end cover.

2. The DC brushless motor that is easy to disassemble and maintain according to claim 1, characterized in that: The top of the end cap is provided with a track groove, which is slidably connected to the bottom of the push rod, and the first elastic element is disposed inside the track groove.

3. The DC brushless motor that is easy to disassemble and maintain according to claim 1, characterized in that: The end cap has a guide groove in its inner cavity, a guide block is slidably connected to the inner cavity of the guide groove, and the guide block is connected to the card plate. The second elastic element is disposed between the guide block and the guide groove, and a reinforcing arm is disposed on the outside of the card plate.

4. The DC brushless motor that is easy to disassemble and maintain according to claim 1, characterized in that: The top of the pressure plate is designed with a slope, and a wear-resistant strip is provided on the top of the pressure plate.

5. The DC brushless motor that is easy to disassemble and maintain according to claim 1, characterized in that: A sealing ring is provided between the end cap and the housing, and a reinforcing rib is provided on the outside of the housing. A capacitor and an output terminal are respectively provided on the top two sides of the end cap, and a protective sleeve is provided on the outside of the capacitor.

6. The DC brushless motor that is easy to disassemble and maintain according to claim 1, characterized in that: The push rod is externally connected to a push plate, and the push plate is externally provided with an anti-slip sleeve.

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