Plastic support structure with three capacitors and two inductors

Abstract

The utility model provides a plastic support structure with three capacitors and two inductors, comprising a plastic support, the upper surface and / or the lower surface of the plastic support is provided with a first mounting groove, a second mounting groove and a third mounting groove; the two electric connection parts are uniformly distributed on the plastic support in the circumferential direction; one end of each inductor is connected with the electric brush, and the other end of each inductor is connected with the electric connecting part; the two first capacitors are arranged in the two second mounting grooves respectively, one end of each first capacitor is connected with the electric connection part, and the other end of each first capacitor serves as a grounding end and is used for being connected with a motor shell; and the second capacitor is arranged in the third mounting groove and is connected in parallel between the two electric connection parts. The plastic support structure with the three capacitors and the two inductors is compact and neat in structure, reasonable in layout and convenient to assemble, enables the whole equipment to achieve high-efficiency electromagnetic compatibility in a compact space, guarantees the stability of electronic components under severe working conditions such as high temperature and high-frequency vibration, and is good in using effect and wide in application range.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to a plastic bracket structure with three capacitors and two inductors. Background Art

[0002] Electric motors are widely used as drive devices in various fields. For example, in the automotive field, electric motors, and especially DC motors, are often used as drive devices for vehicle doors, seats, tailgates, and other parts. Current DC motors generally have no electronic components or only a small number of electronic components installed, resulting in poor electromagnetic compatibility performance. With the rapid development of the automotive industry, the automotive industry's demand for electric motors is increasing, and the requirements for electric motors' electromagnetic compatibility performance are becoming increasingly stringent. Current micromotor designs typically use a dual-capacitor dual-inductor structure, which makes it difficult to meet the high electromagnetic compatibility requirements. At the same time, due to structural influences, assembly is inconvenient, and problems such as false connections and mutual interference are easily generated during vibration. In addition, the structure is loose and not compact. Utility Model Content

[0003] Technical problems to be solved

[0004] The technical problem to be solved by the utility model is to provide a plastic bracket structure with three capacitors and two inductors which has a compact structure, a reasonable layout, is easy to assemble, saves labor and has better electromagnetic compatibility.

[0005] Technical solutions to the problem

[0006] The utility model provides a plastic bracket structure with three capacitors and two inductors, which includes:

[0007] A plastic support 1, wherein both end surfaces of the plastic support 1 are penetrated by a central hole 100, and the upper surface and / or lower surface of the plastic support 1 are provided with a first mounting groove 103, a second mounting groove 1041, and a third mounting groove 1042. There are two first mounting grooves 103 and two second mounting grooves 1041, and each is evenly distributed around the circumference.

[0008] There are two brushes evenly distributed circumferentially on the plastic support 1;

[0009] There are two electrical connection parts 6 and they are evenly distributed on the plastic support 1 in the circumferential direction. The ends of the electrical connection parts 6 extend downward to the outside of the plastic support 1 and serve as power input terminals.

[0010] Two inductors 4 are respectively disposed in the two first mounting slots 103 , one end of the inductor 4 is connected to one of the brushes, and the other end is connected to one of the electrical connection parts 6 ;

[0011] Two first capacitors 52 are respectively disposed in the two second mounting slots 1041 , one end of the first capacitor 52 is connected to one of the electrical connection portions 6 , and the other end is used as a ground terminal for connection to the motor housing;

[0012] The second capacitor 51 is disposed in the third mounting groove 1042 and connected in parallel between the two electrical connection portions 6 .

[0013] Furthermore, the first mounting groove 103 is provided on the upper surface of the plastic support 1 , and the second mounting groove 1041 and the third mounting groove 1042 are provided on the lower bottom surface of the plastic support 1 .

[0014] Furthermore, the brush includes a first metal plug plate 3 fixed on the plastic support 1 and a brush holder fixed on the first metal plug plate 3, the end of the brush holder is provided with a brush body, the first metal plug plate 3 serves as the fixed end and electrical connection end of the brush, and one end of the inductor 4 is electrically connected to the first metal plug plate 3.

[0015] Furthermore, a first wire groove is provided on the top of the first metal insert plate 3 for placing wires and performing spot welding to achieve electrical connection.

[0016] Furthermore, a first slot 101 is provided on the upper surface of the plastic support 1 , and the first metal insert plate 3 is clamped in the first slot 101 . The side wall of the first metal insert plate 3 is provided with barbs 321 .

[0017] Furthermore, the first slot 101 is located outside the first installation slot 103 .

[0018] Furthermore, a first boss 12 is provided at the bottom of the plastic support 1 , and the lower end of the first slot 101 passes through the first boss 12 .

[0019] Furthermore, two second slots 102 are evenly distributed circumferentially on the plastic support 1, and the axis of the second slot 102 is parallel to the axis of the center hole 100. A second metal plug plate is clamped in the second slot 102, and the lower end of the second metal plug plate extends to the outside of the plastic support 1 and serves as a power input end. The top of the second metal plug plate is provided with a second wire groove for placing wires and spot welding to achieve electrical connection.

[0020] Furthermore, a second boss 11 is provided at the lower end of the plastic support 1 , and the lower end of the second slot 102 passes through the second boss 11 .

[0021] Furthermore, an elastic clip 621 is provided on the side wall of the second metal insert plate, and the end of the elastic clip 621 contacts the bottom surface of the second boss 11 to achieve position limiting and fixing of the second metal insert plate.

[0022] Beneficial effects

[0023] The utility model has a plastic bracket structure with three capacitors and two inductors, and a capacitor is connected in parallel between the two brushes to form a positive and negative pole cross-capacitor structure, which has better EMC effect and higher stability and reliability. The upper and lower multi-slot structure is convenient for the placement and wiring of capacitors and inductors, further improving the compactness of the overall structure, which is conducive to reducing electromagnetic interference and ensuring the stable operation of the equipment in complex environments. The multi-metal plug-in structure is set up, which is easy to assemble, with high assembly precision and good reliability. At the same time, it can be used as an electrical connection end and can be spot-welded to achieve electrical connection. The connection is convenient and the stability is high. Under extreme conditions such as high-speed vibration or temperature changes, the structure can still remain firm. Stable electrical connection effectively reduces the failure rate caused by poor contact. In addition, this design not only ensures functionality, but also takes into account the convenience of later maintenance; the provision of wiring slots facilitates the placement and spot welding of wires, avoids the tedious wiring process, further reduces potential failure points, and improves the overall reliability and maintenance efficiency of the equipment; the plastic bracket structure of the three capacitors and two inductors of the utility model is compact and neat, with a reasonable layout and easy assembly, so that the overall equipment can achieve high-efficiency electromagnetic compatibility in a compact space, ensuring the stability of electronic components under harsh working conditions such as high temperature and high-frequency vibration, with good use effect and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the plastic bracket with three capacitors and two inductors of the utility model;

[0025] Figure 2 This is a schematic structural diagram of the plastic bracket structure with three capacitors and two inductors according to the utility model from another angle;

[0026] Figure 3 This is a cross-sectional view of the plastic bracket structure with three capacitors and two inductors of the utility model;

[0027] Figure 4 This is a schematic diagram of the installation of the first metal insert plate of the plastic bracket structure with three capacitors and two inductors of the utility model;

[0028] Figure 5 This is a schematic diagram of the exploded structure of the plastic bracket structure with three capacitors and two inductors of the utility model;

[0029] Figure 6 This is a structural diagram of a plastic support of a plastic support structure with three capacitors and two inductors according to the present invention;

[0030] Figure 7 This is a structural schematic diagram of the plastic support of the plastic support structure of three capacitors and two inductors of the utility model from another angle;

[0031] Figure 8 This is a schematic diagram of the brush ground structure of the plastic bracket structure with three capacitors and two inductors of the utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the electrical connection portion of the plastic bracket structure with three capacitors and two inductors of the utility model;

[0033] Figure 10 This is a schematic diagram of the wiring principle of the plastic bracket structure with three capacitors and two inductors of the utility model. DETAILED DESCRIPTION

[0034] The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0035] See Figures 1-10 The utility model provides a plastic bracket structure with three capacitors and two inductors, which includes a plastic support 1, a brush 2, an electrical connection part 6, an inductor 4 and a capacitor.

[0036] The plastic support 1 serves as a mounting carrier for mounting the brush 2, the electrical connection part 6, the inductor 4 and the capacitor. The plastic support 1 is cylindrical as a whole and is made of plastic with insulating properties. A center hole 100 is penetrated at the center of both end faces of the plastic support 1, which can accommodate the commutator at the end of the rotor. In this application, in order to reasonably design the layout of the above components, the center hole 100 is elliptical or runway-shaped, and a first mounting groove 103, a second mounting groove 1041 and a third mounting groove 1042 are provided on the upper surface or the lower surface of the plastic support 1, or on both the upper surface and the lower surface of the plastic support 1. There are two first mounting grooves 103 and two second mounting grooves 1041, and each is evenly distributed circumferentially, that is, there are two first mounting grooves 103 and they are evenly distributed circumferentially, and there are two second mounting grooves 1041 and they are also evenly distributed circumferentially.

[0037] There are two brushes 2, which are evenly distributed circumferentially on the plastic support 1. The brushes are used to contact the commutator on the rotor for commutation of the motor. There are two electrical connection parts 6, which are evenly distributed circumferentially on the plastic support 1. The end of the electrical connection part 6 extends downward to the outside of the plastic support 1, which serves as the power input terminal of the motor.

[0038] There are two inductors 4, which are respectively arranged in the two first mounting grooves 103. One inductor corresponds to one brush and one electrical connection part. One end of the inductor 4 is connected to one of the brushes, and the other end is connected to one of the electrical connection parts 6, that is, the inductor 4 is connected in series between the electrical connection part and the brush; there are two first capacitors 52, which are respectively arranged in the two second mounting grooves 1041. One first capacitor 52 corresponds to one electrical connection part and a brush. One end of the first capacitor 52 is connected to one of the electrical connection parts 6, and the other end is used as a grounding end for connection to the motor housing; there is one second capacitor 51, which is arranged in the third mounting groove 1042. The second capacitor 51 is connected in parallel between the two electrical connection parts 6.

[0039] The following is a detailed description of the circuit connection part of this application, see Figure 10 The above-mentioned two first capacitors 52 are respectively the first capacitor I52a and the first capacitor II52b, the two inductors 4 are respectively the inductor I4a and the inductor II4b, the two electrical connecting parts are respectively the electrical connecting part I6a and the electrical connecting part II6b, the two brushes are respectively the brush I and the brush II, the wiring terminal of the electrical connecting part I6a is divided into three branches, the three branches are respectively connected to the first capacitor I52a, the second capacitor 51 and the first end of the inductor I4a, the second end of the first capacitor I52a is grounded, and the second end of the inductor I4a is connected to the brush I; the wiring terminal of the electrical connecting part II6b is divided into three branches, the three branches are respectively connected to the first end of the first capacitor II52b, the inductor II4b and the second end of the second capacitor 51, the second end of the first capacitor II52b is grounded, and the second end of the inductor II4b is connected to the brush II. In order to facilitate wiring, the second ends of the first capacitor I52a and the second capacitor II52b are connected to each other and then grounded.

[0040] To facilitate assembly and wiring and improve the overall compactness of the structure, in this embodiment, the first mounting groove 103 is opened on the upper surface of the plastic support 1, and the second mounting groove 1041 and the third mounting groove 1042 are opened on the lower bottom surface of the plastic support 1.

[0041] In the present application, the brush includes a first metal plug-in plate 3 and a brush holder. The first metal plug-in plate 3 is made of metal and has conductivity. At the same time, a first slot 101 is provided on the upper surface of the plastic support 1. The first slot 101 is a strip-shaped structure, which is located on the outside of the first mounting groove 103. The first metal plug-in plate 3 is clamped in the first slot 101. The side wall of the first metal plug-in plate 3 is provided with a barb 321, which can realize the fixation of the first metal plug-in plate 3 in the first slot 101 to prevent it from sliding outward and causing deviation. For details, refer to Figure 8The first metal plug plate 3 includes a rectangular first plate body 31, the lower end of the first plate body 31 extends downwardly to form a first plug portion 32, the width of the first plug portion 32 is smaller than the width of the first plate body 31, so that a downward step surface is formed between the two for limiting axial insertion, and a plurality of barbs 321 with a triangular cross-section are provided on both side walls of the first plug portion 32, and a rectangular piece is provided at the top center position of the first plate body 31, which is horizontally bent 90 degrees to form a first connecting portion 311, and the end of the first connecting portion 311 is bent upward 90 degrees to form a second connecting portion 312, which forms a groove-like structure with the first plate body 31, forming a first wiring groove, which is used to place the wire. The conductor of the wire is spot welded in the groove to form an electrical connection; the above structural design facilitates the overall wiring, improves the internal cleanliness, and facilitates electrical connection, convenient loading and unloading and later maintenance; the brush holder is welded or riveted Fixed on the first metal plug plate 3, the brush holder is L-shaped as a whole, and includes a sheet-like first seat body 21 that is fixed to the first metal plug plate 3. The first seat body is bent inward by about 90 degrees to form a second seat body 22. The end of the second seat body is bent 5-10 degrees in the same direction to form a third seat body 23. A mounting hole is opened on the third seat body 23, and a brush body is installed in the mounting hole for connecting to the commutator of the rotor; the above-mentioned first metal plug plate 3 serves as the fixed end of the brush and also as the electrical connection end. One end of the inductor 4 is electrically connected to the first metal plug plate 3; in the present application, two first bosses 12 are provided at the bottom of the plastic support 1. The two first bosses 12 are located directly below the two first slots 101, and the lower end of the first slot 101 passes through the first boss 12, which can increase the contact area between the first metal plug plate 3 (first plug-in part) and the plastic support, thereby enhancing the installation stability and reducing the problem of poor contact caused by vibration. Furthermore, the design of the first wiring slot takes into account the placement and fixation of wires, effectively avoiding mutual interference between wires and ensuring stable signal transmission. This series of sophisticated designs not only optimizes the performance of the product but also facilitates maintenance for the user.

[0042] Improve the reliability and stability of structural connections.

[0043] At the same time, there are two second slots 102 evenly distributed on the circumference of the plastic support 1. The axis of the second slot 102 is parallel to the axis of the center hole 100. A second metal insert is provided in the second slot 102. The lower end of the second metal insert extends outside the plastic support 1 and serves as a power input terminal. For details, see Figure 9The second metal plug-in plate is made of conductive metal and includes a plate-shaped second plate body 61, which is inserted into the second slot 102. The lower end of the second plate body 61 extends downward to form an electrical connector 62. The width of the electrical connector 62 is smaller than the width of the second plate body 61. Therefore, a downward step surface is formed between the two for axial limit. The electrical connection is located outside the plastic support. An elastic clip 621 is provided on the side wall of the electrical connector 62, which is formed by stamping to form an inverted triangle structure. The end of the elastic clip 621 contacts the bottom surface of the plastic support 1 to limit and fix the second metal plug-in plate to prevent it from loosening. A rectangular clip is provided at the top center of the second plate body 61. The rectangular piece is horizontally bent 90 degrees to form a third connecting portion 631. The end of the third connecting portion 631 is bent upward 90 degrees to form a fourth connecting portion 632. A trough-like structure is formed between the third connecting portion 631 and the second plate 61, forming a second wiring slot for placing wires. The conductors of the wires are spot welded into the slot to form an electrical connection. The above structural design facilitates overall wiring and improves internal neatness. At the same time, it facilitates electrical connection and facilitates loading and unloading of the boss 11. The second boss 11 is located directly below the second slot 102, and the lower end of the second slot 102 passes through the second boss 11. It can increase the contact area between the second metal insert and the plastic support, enhance mechanical stability, and ensure the accuracy of the electrical connection. In addition, this design helps to reduce assembly errors, so that the equipment can still maintain excellent electrical performance during high-speed operation, extend service life, and reduce maintenance costs.

[0044] The utility model has a plastic bracket structure with three capacitors and two inductors, and a capacitor is connected in parallel between the two brushes to form a positive and negative pole cross-capacitor structure, which has better EMC effect and higher stability and reliability. The upper and lower multi-slot structure is convenient for the placement and wiring of capacitors and inductors, further improving the compactness of the overall structure, which is conducive to reducing electromagnetic interference and ensuring the stable operation of the equipment in complex environments. The multi-metal plug-in structure is set up, which is easy to assemble, with high assembly precision and good reliability. At the same time, it can be used as an electrical connection end and can be spot-welded to achieve electrical connection. The connection is convenient and the stability is high. Under extreme conditions such as high-speed vibration or temperature changes, the structure can still remain firm. Stable electrical connection effectively reduces the failure rate caused by poor contact. In addition, this design not only ensures functionality, but also takes into account the convenience of later maintenance; the provision of wiring slots facilitates the placement and spot welding of wires, avoids the tedious wiring process, further reduces potential failure points, and improves the overall reliability and maintenance efficiency of the equipment; the plastic bracket structure of the three capacitors and two inductors of the utility model is compact and neat, with a reasonable layout and easy assembly, so that the overall equipment can achieve high-efficiency electromagnetic compatibility in a compact space, ensuring the stability of electronic components under harsh working conditions such as high temperature and high-frequency vibration, with good use effect and a wide range of applications.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A plastic bracket structure with three capacitors and two inductors, characterized in that: include: A plastic support, wherein both end surfaces of the plastic support are penetrated by a central hole, and the upper surface and / or lower surface of the plastic support are provided with a first mounting groove, a second mounting groove, and a third mounting groove, wherein the first mounting groove and the second mounting groove are both two and are evenly distributed around the circumference; There are two brushes evenly distributed on the plastic support in the circumferential direction; There are two electrical connection parts that are evenly distributed on the plastic support in a circumferential direction, and the ends of the electrical connection parts extend downward to the outside of the plastic support and serve as power input terminals; Two inductors are respectively arranged in the two first mounting slots, one end of the inductor is connected to the brush, and the other end is connected to the electrical connection portion; Two first capacitors are respectively disposed in the two second mounting slots, one end of the first capacitor is connected to the electrical connection portion, and the other end serves as a ground terminal for connection to the motor housing; The second capacitor is disposed in the third mounting groove and connected in parallel between the two electrical connection portions.

2. The plastic bracket structure with three capacitors and two inductors according to claim 1, wherein: The first mounting groove is formed on the upper surface of the plastic support, and the second mounting groove and the third mounting groove are formed on the lower bottom surface of the plastic support.

3. The plastic bracket structure with three capacitors and two inductors according to claim 1, wherein: The brush includes a first metal plug plate fixed on the plastic support and a brush holder fixed on the first metal plug plate. The end of the brush holder is provided with a brush body. The first metal plug plate serves as the fixed end and electrical connection end of the brush. One end of the inductor is electrically connected to the first metal plug plate.

4. The plastic bracket structure with three capacitors and two inductors according to claim 3, wherein: A first wire trough is provided on the top of the first metal insert plate for placing wires and performing spot welding to achieve electrical connection.

5. The plastic bracket structure with three capacitors and two inductors according to claim 3, wherein: A first slot is provided on the upper surface of the plastic support, the first metal inserting plate is clamped in the first slot, and a side wall of the first metal inserting plate is provided with barbs.

6. The plastic bracket structure with three capacitors and two inductors according to claim 5, characterized in that: The first slot is located outside the first installation slot.

7. The plastic bracket structure with three capacitors and two inductors according to claim 5, wherein: A first boss is provided at the bottom of the plastic support, and the lower end of the first slot passes through the first boss.

8. The plastic bracket structure with three capacitors and two inductors according to claim 1, wherein: Two second slots are evenly distributed circumferentially on the plastic support, and the axes of the second slots are parallel to the axis of the center hole. A second metal plug plate is clamped in the second slot, and the lower end of the second metal plug plate extends outside the plastic support and serves as a power input end. The top of the second metal plug plate is provided with a second wire groove for placing wires and performing spot welding to achieve electrical connection.

9. The plastic bracket structure with three capacitors and two inductors according to claim 8, characterized in that: A second boss is provided at the lower end of the plastic support, and the lower end of the second slot passes through the second boss.

10. The plastic bracket structure with three capacitors and two inductors according to claim 9, characterized in that: An elastic clip is provided on the side wall of the second metal insert plate, and the end of the elastic clip contacts the bottom surface of the second boss to achieve position limiting and fixing of the second metal insert plate.

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