Rubber cover assembly and motor

Abstract

The utility model provides a rubber cover assembly and a motor, the rubber cover assembly comprises a rubber cover body, and the rubber cover body is provided with a first surface and a second surface which are opposite; the first surface is provided with a positive electrode power connection sheet and a negative electrode power connection sheet; the second surface is provided with a plurality of Christmas tree structures, the plurality of Christmas tree structures are distributed in an annular array, and every two adjacent Christmas tree structures are connected through an EMC (Electro Magnetic Compatibility) element to form a closed-loop electric loop; in the plurality of Christmas tree structures, at least one Christmas tree structure is connected with the positive electrode power connection sheet, at least one Christmas tree structure is connected with the negative electrode power connection sheet, and at least one Christmas tree structure is grounded. The motor comprises a shell, a rotor assembly, an end cover and the rubber cover assembly. According to the invention, the plurality of Christmas tree structures on the second surface of the rubber cover body and the closed-loop electric circuit formed by connecting the adjacent Christmas tree structures through the EMC elements simplify the assembling process of the EMC elements, improve the automation degree of EMC element assembling, reduce the labor cost and improve the productivity.

Description

Technical Field

[0001] This application belongs to the field of motor technology, and more specifically, relates to a rubber cover assembly and a motor. Background Technology

[0002] In traditional motor design and manufacturing applications, motor cover assemblies involve many EMC components. The assembly method is mostly wire insertion, which has a low degree of automation, high labor costs, and low production efficiency. Utility Model Content

[0003] The purpose of this application is to provide a rubber cap assembly and a motor to solve the technical problems of low automation in EMC component assembly, high labor costs, and low production efficiency in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a cap assembly, including a cap body, wherein the cap body has a first surface and a second surface opposite to each other;

[0005] The first surface is provided with a positive electrode contact piece and a negative electrode contact piece;

[0006] The second side is provided with multiple Christmas tree structures, which are arranged in a ring array. Adjacent Christmas tree structures are connected by EMC components to form a closed-loop electrical circuit. Among the multiple Christmas tree structures, at least one Christmas tree structure is connected to the positive terminal, at least one Christmas tree structure is connected to the negative terminal, and at least one Christmas tree structure is grounded.

[0007] Furthermore, the Christmas tree structure is provided with multiple wiring pins, which are connected to the terminals of the EMC component.

[0008] Furthermore, the wiring pin is soldered to the wiring terminal of the EMC component.

[0009] Furthermore, the EMC component includes an inductor disposed on a first surface of the cap body; the first surface is also provided with a connecting piece, one end of the inductor is connected to the connecting piece, and the other end of the inductor is connected to the positive terminal contact or the negative terminal contact.

[0010] Furthermore, the EMC component also includes a resistor, the two ends of which are respectively connected to two Christmas tree structures. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to the positive terminal or the negative terminal.

[0011] Furthermore, the EMC component also includes a first capacitor, the two ends of which are respectively connected to two Christmas tree structures. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to the positive terminal or the negative terminal.

[0012] Furthermore, the EMC component also includes a second capacitor, which is connected in parallel with the resistor.

[0013] Furthermore, the first surface of the rubber cap body is also provided with a carbon brush and a spring, the carbon brush being connected to the spring and the connecting piece respectively.

[0014] Furthermore, the cap assembly also includes an insulating element disposed on the second side of the cap body and covering the Christmas tree structure and the EMC element.

[0015] This application also provides an electric motor, comprising:

[0016] A housing having an open end;

[0017] A rotor assembly disposed within the housing;

[0018] The aforementioned cap assembly is disposed at the opening end, with the first surface of the cap body facing the interior of the housing;

[0019] End cap, which is connected to the opening end.

[0020] The beneficial effects of the rubber cover assembly and motor provided in this application are as follows: Compared with the prior art, the multiple Christmas tree structures on the second surface of the rubber cover body, and the closed-loop electrical circuit formed by the connection of adjacent Christmas tree structures through EMC components, simplify the assembly process of EMC components, improve the automation level of EMC component assembly, reduce labor costs, and increase production capacity. The design of the Christmas tree structure enables EMC components to be connected more stably and reliably, reducing the failure rate caused by poor connection. At the same time, it makes the structure of the rubber cover assembly more compact, reduces space occupation, and improves the overall performance of the motor. The motor provided in this application, due to the use of the aforementioned rubber cover assembly, also has the same advantages. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the first side of the adhesive cap assembly provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the second side of the adhesive cap assembly provided in an embodiment of this application;

[0024] Figure 3 A schematic diagram showing the connection of each component in the first surface of the cap assembly provided in this application embodiment;

[0025] Figure 4 A schematic diagram showing the connection of each component in the second side of the cap assembly provided in an embodiment of this application;

[0026] Figure 5 This is an exploded structural diagram of the motor provided in an embodiment of this application;

[0027] Figure 6 This is a three-dimensional structural diagram of the motor provided in an embodiment of this application.

[0028] The following are the labeling elements in the figure:

[0029] 10-Plastic cap assembly; 20-Housing; 30-Rotor assembly; 40-End cap; 50-Gear;

[0030] 100-plastic cover body;

[0031] 201-Positive terminal contact; 202-Negative terminal contact; 203-Inductor; 204-Connecting piece; 205-Carbon brush; 206-Spring;

[0032] 301 - Resistor; 302 - First capacitor; 303 - Second capacitor; 304 - Positive Christmas tree; 305 - Negative Christmas tree; 306 - First grounded Christmas tree; 307 - Second grounded Christmas tree. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Please refer to the following: Figure 1 and Figure 2 The adhesive cap assembly 10 provided in the embodiments of this application will now be described. The adhesive cap assembly 10 includes an adhesive cap body 100, which has a first side and a second side facing each other; the first side is provided with a positive electrode contact 201 and a negative electrode contact 202; the second side is provided with a plurality of Christmas tree structures, which are arranged in a ring array, and adjacent Christmas tree structures are connected by EMC components to form a closed-loop electrical circuit; among the plurality of Christmas tree structures, at least one Christmas tree structure is connected to the positive electrode contact 201, at least one Christmas tree structure is connected to the negative electrode contact 202, and at least one Christmas tree structure is grounded.

[0038] Compared with the prior art, the rubber cover assembly 10 provided in this application embodiment simplifies the assembly process of EMC components by using multiple Christmas tree structures on the second surface of the rubber cover body 100 and the closed-loop electrical circuit formed by connecting adjacent Christmas tree structures through EMC components. This improves the automation level of EMC component assembly, reduces labor costs, and increases production capacity. The design of the Christmas tree structure enables more stable and reliable connection of EMC components, reducing the failure rate caused by poor connection. At the same time, it makes the structure of the rubber cover assembly 10 more compact, reduces space occupation, and improves the overall performance of the motor. The motor provided in this application, due to the use of the aforementioned rubber cover assembly 10, also has the same advantages.

[0039] In this embodiment, EMC refers to Electromagnetic Compatibility, which is the ability of a device or system to operate normally in its electromagnetic environment without causing unacceptable electromagnetic interference to anything in that environment. EMC components are mainly used to suppress electromagnetic interference, preventing electromagnetic waves from interfering with the surrounding environment and equipment, as well as the mutual influence between devices. In the rubber cover assembly 10, the inclusion of EMC components not only enhances electromagnetic compatibility but also ensures the stable operation of the motor in various electromagnetic environments. Through meticulous design and layout, the combination of EMC components and the Christmas tree structure forms an efficient and stable electromagnetic protection system, providing strong support for the reliable operation of the motor.

[0040] In one embodiment of this application, the Christmas tree structure is provided with multiple wiring pins, which are connected to the terminals of EMC components.

[0041] In this embodiment, by setting multiple terminals, not only is the stability and reliability of the electrical connection ensured, but the assembly process is also further simplified. The connection between the terminals and the EMC component terminals, achieved through precise process control, ensures good electrical conductivity and mechanical fixation. This not only improves the component's vibration and interference resistance but also guarantees the stability and durability of the motor during long-term operation. Furthermore, the multiple terminal design allows the Christmas tree structure to flexibly adapt to different circuit layouts and connection requirements, enabling motor diversification and customization.

[0042] In one embodiment of this application, the wiring pins are soldered to the terminals of the EMC component.

[0043] In this embodiment, the welding connection not only ensures the robustness of the electrical connection but also improves its conductivity. Through a high-precision welding process, a stable electrical connection is formed between the terminal block and the EMC component's terminal, effectively reducing contact resistance and energy loss. Simultaneously, the welded connection also possesses good mechanical strength, capable of withstanding vibrations and impacts during motor operation, further enhancing the motor's reliability and durability. Furthermore, the welding process is relatively simple, easily automating production, improving efficiency, and reducing costs.

[0044] Specifically, micro-arc welding can be used to solder the terminals to EMC components. As an advanced welding technology, micro-arc welding offers advantages such as high weld quality, a small heat-affected zone, and minimal weld deformation. During the soldering process, micro-arc welding allows for precise control of welding temperature and time, ensuring the quality and performance of the weld joint. Furthermore, micro-arc welding is characterized by high welding speed and high production efficiency, meeting the demands of large-scale automated production. Therefore, using micro-arc welding as the soldering method for terminals to EMC components not only improves welding quality and production efficiency but also reduces production costs, providing strong technical support for motor manufacturing.

[0045] In one embodiment of this application, please refer to the following: Figure 1 and Figure 3 The EMC component includes an inductor 203, which is disposed on the first side of the cap body 100. The first side is also provided with a connecting piece 204. One end of the inductor 203 is connected to the connecting piece 204, and the other end of the inductor 203 is connected to the positive terminal contact piece 201 or the negative terminal contact piece 202.

[0046] In this embodiment, the connecting piece 204 acts as a bridge between the inductor 203 and other parts of the motor, playing a crucial role in conductivity. It is typically made of a metal material with good conductivity to ensure smooth current flow. Simultaneously, the design of the connecting piece 204 also takes into account the overall structure and layout of the motor to ensure its reasonable and stable installation position within the motor.

[0047] In this embodiment, inductor 203, as an important component of EMC components, primarily functions to suppress electromagnetic interference. During motor operation, inductor 203 absorbs and releases energy, thereby effectively reducing electromagnetic noise and radiation, protecting the normal operation of the motor and its surrounding equipment. Furthermore, inductor 203 can also improve the motor's power factor and enhance its power quality.

[0048] In this embodiment, the positive terminal 201 and the negative terminal 202 are the interfaces connecting the motor to an external power source. They are typically located on the second side of the cover body 100, forming a complete circuit with components such as the inductor 203 and connecting piece 204 on the first side. When the motor is running, current enters the motor through the positive terminal 201 and the negative terminal 202, providing the necessary electrical energy for the normal operation of the motor.

[0049] In one embodiment of this application, please refer to Figure 2 The EMC component also includes a resistor 301, with its two ends connected to two Christmas tree structures respectively. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to either the positive terminal 201 or the negative terminal 202.

[0050] This design not only enhances the functionality of the EMC component but also optimizes its structural layout. The introduction of resistor 301, as another crucial component of the EMC component, further improves electromagnetic compatibility performance. By connecting the two Christmas tree structures, resistor 301 effectively disperses and balances current, reducing electromagnetic interference. Simultaneously, grounding one Christmas tree structure quickly conducts any potential static electricity or interference current to the ground, preventing any impact on the motor and surrounding equipment. The connection of the other Christmas tree structure to either the positive terminal 201 or the negative terminal 202 ensures that current can enter the motor stably and smoothly, providing a solid guarantee for the normal operation of the motor. This meticulous design fully demonstrates the innovation and practicality of this application in motor EMC components.

[0051] In one embodiment of this application, please refer to Figure 2 The EMC component also includes a first capacitor 302, with its two ends connected to two Christmas tree structures respectively. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to either the positive terminal contact 201 or the negative terminal contact 202.

[0052] The addition of the first capacitor 302 further enriches the composition of EMC components and significantly enhances its filtering and anti-interference capabilities. Similar to resistor 301, the first capacitor 302, by connecting the two Christmas tree structures, achieves further current dispersion and balance, effectively reducing the generation of electromagnetic noise. Grounding one Christmas tree structure can quickly release accumulated static electricity or interference charges, preventing them from posing a potential threat to the motor and its surrounding circuits. The connection of the other Christmas tree structure to either the positive terminal 201 or the negative terminal 202 ensures that the motor receives a stable and clean current supply, which is crucial for ensuring stable motor operation. This design not only improves the electromagnetic compatibility performance of the motor but also enhances its overall reliability and durability.

[0053] In one embodiment of this application, please refer to Figure 2 The EMC component also includes a second capacitor 303, which is connected in parallel with the resistor 301.

[0054] The introduction of the second capacitor 303 further enhances the performance of the EMC components. Unlike the first capacitor 302, the parallel design of the second capacitor 303 and resistor 301 allows high-frequency noise in the circuit to be bypassed to ground more effectively, thereby further reducing the level of electromagnetic interference. This parallel structure not only improves the EMC components' ability to suppress high-frequency noise but also maintains circuit stability, ensuring stable operation of the motor under various operating conditions. Furthermore, the synergistic effect of the second capacitor 303 and resistor 301 helps optimize impedance matching in the circuit, reduces signal reflection, and further improves the motor's electromagnetic compatibility performance.

[0055] In one embodiment of this application, please refer to the following: Figure 1 and Figure 3 The first side of the rubber cap body 100 is also provided with a carbon brush 205 and a spring 206, and the carbon brush 205 is connected to the spring 206 and the connecting piece 204 respectively.

[0056] The combined design of carbon brush 205 and spring 206 ensures good electrical contact during motor operation, reducing current fluctuations caused by poor contact, which is crucial for stable motor operation. Connecting piece 204 acts as a bridge between carbon brush 205 and the motor's internal circuitry; its secure connection not only ensures smooth current transmission but also effectively prevents circuit faults caused by loose connections.

[0057] In one embodiment of this application, the cap assembly 10 further includes an insulating element disposed on the second side of the cap body 100 and covering the Christmas tree structure and EMC components.

[0058] The insulation design serves two purposes: firstly, it protects the Christmas tree structure and EMC components, preventing external impurities or moisture from corroding these critical parts, thus extending the motor's lifespan; secondly, it provides electrical isolation, ensuring the safe operation of the motor's internal circuitry and effectively preventing malfunctions caused by electrical short circuits.

[0059] Specifically, insulating paper can be used for the insulation components. Insulating paper has good insulation and heat resistance properties, enabling it to maintain stable electrical performance during motor operation, thereby ensuring the safe operation of the motor. At the same time, insulating paper also has good mechanical strength, capable of withstanding vibration and impact during motor operation, further enhancing the reliability and durability of the motor.

[0060] This application also provides an electric motor, which can be seen in conjunction with the application. Figure 5 and Figure 6The motor includes a housing 20, a rotor assembly 30, an end cap 40, and the aforementioned rubber cap assembly 10. The housing 20 has an open end; the rotor assembly 30 is disposed inside the housing 20; the rubber cap assembly 10 is disposed at the open end of the housing 20, and the first surface of the rubber cap body 100 faces the interior of the housing 20; the end cap 40 is connected to the open end of the housing 20.

[0061] The design of the end cover 40 not only enhances the overall structural strength of the motor but also serves as a seal, effectively preventing external impurities such as dust and moisture from entering the motor, thus ensuring a clean and dry operating environment. The EMC components in the rubber cover assembly 10 are protected by both the insulating component and the end cover 40, preventing EMC components from detaching and causing motor failure. The tight fit between the housing 20, rotor assembly 30, end cover 40, and rubber cover assembly 10 ensures the motor remains stable during high-speed operation, reducing vibration and noise generation.

[0062] Specifically, both the housing 20 and the end cap 40 can be made of metal materials, such as iron, aluminum alloy, or stainless steel. These materials have good mechanical strength and corrosion resistance, effectively protecting the internal components of the motor from damage caused by the external environment. At the same time, the good thermal conductivity of metal materials also helps the motor dissipate heat, ensuring stable operation of the motor even in high-temperature environments.

[0063] Specifically, the rotor assembly 30 includes a rotor core, rotor windings, and a shaft. The rotor core is made of laminated silicon steel sheets and has good magnetic permeability, used to support the rotor windings and transmit the magnetic field. The rotor windings are embedded in the slots of the rotor core, generating a magnetic field when energized, which interacts with the magnetic field generated by the stator, thereby realizing the rotation of the motor. The shaft passes through the center of the rotor core and is used to connect the rotor assembly 30 to the external mechanism of the motor to transmit torque.

[0064] Please refer to the following in this embodiment: Figure 5 and Figure 6 The motor also includes a gear 50, which is connected to the shaft. The gear 50 allows for more precise control and transmission of the motor's output. The gear 50 is made of high-strength, wear-resistant material to ensure its stability and durability during long-term operation. Through its connection to the shaft, the gear 50 can transmit the motor's rotational power to other mechanical components, enabling various complex mechanical actions.

[0065] In this embodiment, the motor can employ various circuit layouts, such as: 1Cx+2Cy+2R+2L, 2Cy+2R+2L, 2Cy+2L, and 2R+2L, 2L; where L represents inductor 203, R represents resistor 301, Cy represents first capacitor 302, and Cx represents second capacitor 303. Different circuit layouts can be selected based on the specific application scenario and requirements of the motor to achieve optimal performance and cost-effectiveness. For example, in applications requiring high electromagnetic compatibility, a 1Cx+2Cy+2R+2L circuit layout can be selected to achieve better EMC design results. In applications with certain cost requirements, circuit layouts such as 2Cy+2R+2L, 2Cy+2L, or 2R+2L, 2L can be selected to reduce the investment cost of the motor.

[0066] This embodiment uses a circuit layout of 1Cx+2Cy+2R+2L as an example; please refer to the following documentation as well. Figure 2 and Figure 4 The Christmas tree structure has four parts, including a positive Christmas tree 304, a negative Christmas tree 305, a first grounded Christmas tree 306, and a second grounded Christmas tree 307. Two inductors 203 are connected to the positive terminal 201 and the negative terminal 202, respectively. The positive terminal 201 is connected to the positive Christmas tree 304, and the negative terminal 202 is connected to the negative Christmas tree 305. Of the two resistors 301, one resistor 301 is connected to the first grounded Christmas tree 306 and the positive Christmas tree 304, and the other resistor 301 is connected to the negative Christmas tree 305 and the second grounded Christmas tree 307. Of the two first capacitors 302, one first capacitor 302 is connected to the first grounded Christmas tree 306 and the negative Christmas tree 305, and the other first capacitor 302 is connected to the positive Christmas tree 304 and the second grounded Christmas tree 307. A second capacitor 303 is connected in parallel with a resistor 301 and is connected to the first grounded Christmas tree 306 and the positive Christmas tree 304.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rubber cap assembly, characterized in that, Includes a cap body, the cap body having opposing first and second surfaces; The first surface is provided with a positive electrode contact piece and a negative electrode contact piece; The second side is provided with multiple Christmas tree structures, which are arranged in a ring array. Adjacent Christmas tree structures are connected by EMC components to form a closed-loop electrical circuit. Among the multiple Christmas tree structures, at least one Christmas tree structure is connected to the positive terminal, at least one Christmas tree structure is connected to the negative terminal, and at least one Christmas tree structure is grounded.

2. The cap assembly as described in claim 1, characterized in that, The Christmas tree structure has multiple wiring pins, which are connected to the terminals of the EMC component.

3. The cap assembly as described in claim 2, characterized in that, The terminal block is soldered to the terminal block of the EMC component.

4. The cap assembly as claimed in claim 1, characterized in that, The EMC component includes an inductor disposed on a first surface of the cap body; the first surface is also provided with a connecting piece, one end of the inductor is connected to the connecting piece, and the other end of the inductor is connected to the positive terminal contact or the negative terminal contact.

5. The cap assembly as described in claim 4, characterized in that, The EMC component also includes a resistor, the two ends of which are respectively connected to two Christmas tree structures. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to the positive terminal or the negative terminal.

6. The cap assembly as claimed in claim 5, characterized in that, The EMC component also includes a first capacitor, the two ends of which are respectively connected to two Christmas tree structures. One of the Christmas tree structures is grounded, and the other Christmas tree structure is connected to the positive terminal or the negative terminal.

7. The cap assembly as claimed in claim 6, characterized in that, The EMC component also includes a second capacitor, which is connected in parallel with the resistor.

8. The cap assembly as claimed in claim 4, characterized in that, The first side of the rubber cap body is also provided with a carbon brush and a spring, and the carbon brush is connected to the spring and the connecting piece respectively.

9. The cap assembly as described in any one of claims 1-8, characterized in that, The cap assembly also includes an insulating element disposed on the second side of the cap body and covering the Christmas tree structure and the EMC element.

10. An electric motor, characterized in that, include: A housing having an open end; A rotor assembly disposed within the housing; The cap assembly as described in any one of claims 1-9, wherein the cap assembly is disposed at the opening end, and a first surface of the cap body faces the interior of the housing; End cap, which is connected to the opening end.

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