A relay ring, motor and pump
By adopting conductive components with relay ring structures and insulating coverings, the winding end connections of multi-line parallel motors are simplified, solving the problems of winding end connection complexity and welding errors, and improving the reliability and performance of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI SHINHOO NEW ENERGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the winding end connection process of multi-line parallel motors is complex, prone to errors, and has problems such as increased contact resistance or connection failure caused by paint peeling.
The relay ring structure is adopted, including conductive components and insulating covering. The wiring parts are spaced apart along the circumference of the relay ring, which simplifies the connection of the winding ends, reduces the number of cross wires, and fixes the conductive busbar through the insulating covering, avoiding the complexity of welding.
The process of connecting the winding ends is simplified, the possibility of welding errors is reduced, contact resistance and heat generation are lowered, and motor performance is improved.
Smart Images
Figure CN224537892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pump technology, and in particular to a relay ring, a motor and a pump. Background Technology
[0002] With the increasing demand for low-pressure, high-power electric water pumps, the winding process of motors has become more complex, leading to the emergence of multi-wire parallel designs. In conventional multi-wire parallel schemes, each phase lead of the motor consists of multiple wires combined into one wire, which is then soldered to a flexible wire or a pin.
[0003] Because the winding slots of the motor are evenly arranged along the circumference of the insulation frame, and each winding slot contains a winding, the ends of multiple windings are also spaced apart along the circumference of the insulation frame. This results in a complex winding end connection process, with numerous and messy cross-wires, making it prone to errors and hindering product quality control. Furthermore, welding multiple wires can easily lead to uneven enamel peeling, resulting in increased contact resistance or connection failure. Utility Model Content
[0004] The purpose of this invention is to propose a relay ring to at least solve one of the aforementioned technical problems.
[0005] To achieve the above objectives, this utility model provides a relay ring, comprising:
[0006] A conductive component includes a conductive bus, pins, and multiple terminals. The pins and terminals are connected to the conductive bus and extend along the axial direction of the relay ring. The multiple terminals are spaced apart circumferentially along the relay ring. Each terminal includes a connecting portion and two clamping portions. One end of the connecting portion is connected to the conductive bus, and the other end is connected to the two clamping portions. The two clamping portions are spaced apart, and the connecting portion and the two clamping portions form a clamping groove. The clamping groove is configured to accommodate the end of a motor winding.
[0007] An insulating covering portion covers the outside of the conductive busbar, and the wiring portion and the pin extend out of the insulating covering portion.
[0008] Optionally, notches are provided on the first and second sides of the connecting portion, and the two clamping portions are spaced apart along the first direction, with the first and second sides arranged along the first direction.
[0009] Optionally, the minimum distance between the inner wall of the notch and the groove wall of the clamping groove is H1, and the dimension of the clamping part along the first direction is H, wherein H1≥H2.
[0010] Optionally, the notch is a circular arc notch.
[0011] Optionally, the relay ring includes three sets of conductive components. The three sets of conductive components are a first conductive component, a second conductive component, and a third conductive component arranged radially and spaced apart from each other along the relay ring. One of the first conductive component, the second conductive component, and the third conductive component is a U-phase conductive component, one is a V-phase conductive component, and one is a W-phase conductive component.
[0012] Optionally, the wiring portion is connected to the side of the first conductive component, the second conductive component, or the third conductive component near the center line of the relay ring.
[0013] Optionally, the wiring portion is an integral structure; and / or
[0014] The first conductive component is an integral structure, the second conductive component is an integral structure, and the third conductive component is an integral structure; and / or
[0015] The first conductive component, the second conductive component, and the third conductive component are all formed by stamping and bending, and / or
[0016] The insulating coating is formed on the outside of the conductive busbars of the first conductive component, the second conductive component, and the third conductive component by plastic coating.
[0017] Optionally, at least one positioning groove is formed on the outer peripheral surface of the insulating covering, the positioning groove being configured to accommodate a positioning part on the motor; and / or
[0018] The insulating covering part has at least two snap-fit holes, which are configured to snap into the buckles on the motor.
[0019] Another objective of this invention is to provide an electric motor that at least solves one of the aforementioned technical problems.
[0020] To achieve this objective, the second aspect of this utility model adopts the following technical solution:
[0021] An electric motor includes an insulating frame and a relay ring. The insulating frame is provided with a plurality of winding slots. The wiring portion corresponds one-to-one with the winding slot. A winding is provided in the winding slot. The end of the winding is clamped in the clamping slot and welded to the wiring portion.
[0022] Another object of this invention is to provide a pump that at least solves one of the aforementioned technical problems.
[0023] To achieve this objective, the third aspect of this utility model adopts the following technical solution:
[0024] A pump, including the aforementioned motor.
[0025] As can be seen from the above, the technical solution provided by this utility model has an insulating covering part covering the outside of the conductive busbar, and the wiring part and the pin extending out of the insulating covering part, thereby facilitating the connection between the wiring part and the end of the winding, and facilitating the insertion of the pin into the power supply structure.
[0026] Since multiple connection points are spaced apart circumferentially along the relay ring, it is not necessary to combine multiple wires of each phase winding into one wire. Instead, one can select the nearest connection point from among the multiple connection points, insert the end of the winding into the clamping groove of the nearest connection point, and then weld the end of the winding to the connection point.
[0027] Multiple connection points spaced circumferentially along the relay ring simplify the winding end connection process, reduce the number of cross wires, and make the wiring simpler and less prone to errors. The reduced number of wires welded at one time reduces the likelihood of uneven paint peeling leading to increased contact resistance or connection failure, while also lowering motor heat generation and improving motor performance. Attached Figure Description
[0028] Figure 1 This is a partial structural schematic diagram of the motor provided in an embodiment of the present utility model;
[0029] Figure 2 This is a schematic diagram of the structure of the relay ring provided in an embodiment of the present invention;
[0030] Figure 3 This is a schematic diagram of the structure of the second conductive component provided in an embodiment of the present invention;
[0031] Figure 4 This is a plan view of the relay ring provided in an embodiment of this utility model;
[0032] Figure 5 This is an exploded view of the relay ring provided in this embodiment of the utility model;
[0033] Figure 6 yes Figure 1 A magnified view of a section at point A in the middle;
[0034] Figure 7 yes Figure 1 A magnified view of a section at point B in the middle.
[0035] In the picture:
[0036] 1. First conductive component; 11. Conductive busbar; 12. Pin; 13. Wiring part; 131. Connecting part; 132. Clamping part; 133. Clamping groove; 134. Notch; 2. Second conductive component; 3. Third conductive component;
[0037] 4. Insulation covering part; 41. Positioning groove; 42. Snap-fit hole;
[0038] 10. Winding; 20. Insulating frame; 30. Positioning part; 40. Snap-fit; 401. Vertical part; 402. Snap-fit part; 50. Relay ring. Detailed Implementation
[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0040] This utility model defines certain directional terms. Unless otherwise stated, the directional terms used, such as "up", "down", "left", "right", "inner", and "outer", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of this utility model.
[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0043] This embodiment provides a relay ring 50 for use in the motor of a water pump, which can be an electronic pump, centrifugal pump, or circulating pump, but is not limited thereto.
[0044] like Figures 1-5 As shown, the relay ring 50 is connected to the insulating frame 20 of the motor and is circular in shape. The relay ring 50 provided in this embodiment includes a conductive component and an insulating covering part 4. Wherein,
[0045] like Figure 2 and Figure 3As shown, the conductive component includes a conductive bus 11, a pin 12, and multiple wiring portions 13. The pin 12 and the wiring portions 13 are both connected to the conductive bus 11. The pin 12 and the wiring portions 13 extend along the axial direction of the relay ring 50, and the multiple wiring portions 13 are arranged at intervals along the circumference of the relay ring 50.
[0046] The wiring portion 13 includes a connecting portion 131 and two clamping portions 132. One end of the connecting portion 131 is connected to the conductive bus 11, and the other end is connected to the two clamping portions 132. It can be understood that one end and the other end of the connecting portion 131 are arranged along the axial direction of the relay ring 50; that is, one end of the connecting portion 131 along the axial direction of the relay ring 50 is connected to the conductive bus 11, and the other end along the axial direction is connected to the clamping portions 132. The two clamping portions 132 are spaced apart, and the connecting portion 131 and the two clamping portions 132 form a clamping groove 133, which is configured to accommodate the end of the motor winding 10. Preferably, the two clamping portions 132 are spaced apart circumferentially along the relay ring 50. More specifically, the wiring portion 13 has a flat plate structure, so the two clamping portions 132 are spaced apart approximately circumferentially along the relay ring 50.
[0047] The insulating cover 4 covers the outside of the conductive bus 11, and the wiring part 13 and the pin 12 extend out of the insulating cover 4, thereby facilitating the connection of the wiring part 13 to the end of the winding 10, and facilitating the insertion of the pin 12 into the power supply structure.
[0048] Since multiple connection points 13 are spaced apart along the circumference of the relay ring 50, it is not necessary to combine the multiple wires of each phase winding 10 into a single wire. Instead, one connection point 13 can be selected from the multiple connection points 13, the end of the winding 10 can be inserted into the clamping groove 133 of the nearest connection point 13, and then the end of the winding 10 can be welded to the connection point 13.
[0049] The multiple wiring sections 13 spaced circumferentially along the relay ring 50 simplify the end connection process of the winding 10, reduce the number of cross wires, and make the wiring simpler and less prone to errors. The reduced number of wires welded at one time reduces the likelihood of problems such as increased contact resistance or connection failure caused by uneven paint peeling, while also reducing motor heat generation and improving motor performance.
[0050] Both the pin 12 and the terminal 13 extend axially along the relay ring 50. Therefore, the pin 12 and the terminal 13 do not protrude radially from the insulating frame 20, thus not increasing the radial dimension of the motor. The pin 12 is inserted into the power supply structure, and the power supply structure has a clearance groove corresponding to the terminal 13. Therefore, the pin 12 and the terminal 13 do not increase the overall axial dimension of the motor.
[0051] like Figure 3As shown, notches 134 are respectively provided on the first and second sides of the connecting portion 131, and two clamping portions 132 are spaced apart along a first direction. In this embodiment, the first direction is approximately tangential to the relay ring 50 where the connecting portion 131 is located. For ease of explanation, the two clamping portions 132 are named the first clamping portion and the second clamping portion, respectively. When the end of the winding 10 is placed in the clamping groove 133, the first clamping portion and the second clamping portion rotate slightly and move away from each other. The notches 134 provide clearance for the rotation of the roots of the first and second clamping portions, allowing them to move away from each other under a small force and preventing the roots of the first and second clamping portions from being torn. Optionally, the notches 134 are arc-shaped notches to avoid stress concentration.
[0052] like Figure 4 As shown, optionally, the distance H3 between the first clamping part and the second clamping part is greater than the outer diameter r of the enameled wire of the winding 10. Preferably, H3 = r + 0.1, in mm. This clamps the end of the winding 10 before welding, facilitating welding, and allows the core of the winding 10 to directly contact the terminal part 13 after the enamel peels off, resulting in lower contact resistance.
[0053] like Figure 4 As shown, optionally, the minimum distance between the inner wall of the notch 134 and the groove wall of the clamping groove 133 is H1, and the dimension of the clamping part 132 along the first direction is H2, where H1 ≥ H2. This ensures both the strength of the wiring part 13 and the ease with which the first and second clamping parts can rotate under external force. Preferably, H2 ≥ 0.5 * H3, thus ensuring the strength of the clamping part 132.
[0054] like Figure 5 As shown, the relay ring 50 includes three sets of conductive components: a first conductive component 1, a second conductive component 2, and a third conductive component 3. The first conductive component 1, the second conductive component 2, and the third conductive component 3 are arranged sequentially and at intervals along the radial direction of the relay ring 50, thereby saving axial space occupied by the relay ring 50 and reducing the axial dimension of the pump. For example, the first conductive component 1 is located on the outermost side.
[0055] Combination Figure 1 Since the insulating frame 20 is also a ring structure, the inner diameter of the relay ring 50 is approximately the same as the inner diameter of the insulating frame 20, and the outer diameter of the relay ring 50 is approximately the same as the outer diameter of the insulating frame 20. Therefore, the relay ring 50 will not increase the radial dimension of the pump.
[0056] One of the first conductive component 1, the second conductive component 2, and the third conductive component 3 is a U-phase conductive component, one is a V-phase conductive component, and one is a W-phase conductive component. Correspondingly, the three pins 12 are U-phase, V-phase, and W-phase pins, respectively.
[0057] The insulating covering part 4 is formed by plastic coating on the conductive bar 11 of the first conductive component 1, the conductive bar 11 of the second conductive component 2 and the conductive bar 11 of the third conductive component 3.
[0058] The first conductive component 1, the second conductive component 2, and the third conductive component 3 are independent. After being arranged in place, they are molded into a whole through plastic coating. The insulating covering part 4 wraps around the conductive bars 11 of the first conductive component 1, the second conductive component 2, and the third conductive component 3, insulatingly separating the three conductive bars 11 and isolating them from other structures. By forming the insulating covering part 4 through plastic coating, the functions of insulation and fixing the relative positions of the conductive components are achieved.
[0059] Preferably, the number of winding slots (i.e., the number of winding groups 10) is the same as the number of connection parts 13, and the connection parts 13 are located near the end of the winding group 10. In this embodiment, twelve winding slots are provided, with four winding slots corresponding to each other. Therefore, the first conductive component 1, the second conductive component 2, and the third conductive component 3 each have four connection parts 13 and one pin 12.
[0060] For example, the motor can be wired using a delta connection, where the beginning and end of the three-phase stator windings 10 are connected correspondingly. The connection between the beginning of the first phase winding and the end of the third phase winding can be considered as the U phase, which is connected to the wiring part 13 of the U phase conductive component. The connection between the beginning of the second winding and the end of the first winding can be considered as the V phase, which is connected to the wiring part 13 of the V phase conductive component. The connection between the beginning of the third winding and the end of the second winding can be considered as the W phase, which is connected to the wiring part 13 of the W phase conductive component.
[0061] Combination Figure 1 As shown, the ends of the two windings 10 connected to a terminal 13 are arranged in the clamping groove 133 along the axial direction of the relay ring 50. The welding of the ends of the two windings 10 is reliable and the contact resistance is small.
[0062] like Figure 3 and Figure 5As shown, the wiring portion 13 is connected to the side of the first conductive component 1, the second conductive component 2, or the third conductive component 3 near the center line of the relay ring 50, thereby reducing the radial dimension of the relay ring 50. For example, the wiring portions 13 on the first conductive component 1, the second conductive component 2, and the third conductive component 3 are located on the same circumference.
[0063] Optionally, the wiring section 13 is an integral structure.
[0064] Preferably, the first conductive component 1, the second conductive component 2, and the third conductive component 3 are integral structures, so as to facilitate the processing of the conductive components.
[0065] For example, the first conductive component 1, the second conductive component 2, and the third conductive component 3 are all formed by stamping and bending. Specifically, stamping forms an irregularly shaped plate, and then bending forms a pin 12 and a plurality of wiring portions 13.
[0066] The first conductive component 1, the second conductive component 2, and the third conductive component 3 are made of copper to reduce resistance.
[0067] like Figure 5 As shown, at least one positioning groove 41 is formed on the outer peripheral surface of the insulating covering part 4, and the positioning groove 41 is configured to accommodate the positioning part 30 on the motor. (Combined with...) Figure 1 and Figure 6 The insulating frame 20 is provided with a positioning part 30 extending along the axial direction of the motor, and the positioning part 30 is at least partially disposed in the positioning groove 41. The positioning groove 41 penetrates the insulating covering part along the axial direction. When the relay ring 50 is installed on the insulating frame 20, the relay ring 50 approaches the insulating frame 20 along the axial direction, and the positioning part 30 can be inserted into the positioning groove 41. For example, three positioning grooves 41 are evenly spaced along the circumference of the insulating covering part 4.
[0068] like Figure 5 As shown, the insulating covering part 4 has at least two snap-fit holes 42, which are configured to snap into the buckle 40 on the motor.
[0069] Combination Figure 1 and Figure 7The insulating frame 20 is provided with a buckle 40, which includes a vertical portion 401 and a snap-fit portion 402. One end of the vertical portion 401 is connected to the insulating frame 20, and the other end is connected to the snap-fit portion 402. The snap-fit portion 402 protrudes radially from the vertical portion 401 of the insulating frame 20, and the vertical portion 401 is elastic. When the relay ring 50 is installed on the insulating frame 20, the relay ring 50 approaches the insulating frame 20 axially, and the vertical portion 401 tilts towards the center of the insulating frame 20. The snap-fit portion 402 can pass through the snap-fit hole 42. Subsequently, the vertical portion 401 returns to its original position, and the snap-fit portion 402 can snap onto the upper surface of the insulating covering portion 4. For example, three snap-fit holes 42 are evenly spaced along the circumference of the insulating covering portion 4.
[0070] like Figure 1 As shown, this embodiment also provides a motor, including an insulating frame 20 and the aforementioned relay ring 50. The insulating frame 20 is provided with a plurality of winding slots, and the wiring part 13 corresponds to the winding slots one by one. A winding 10 is provided in the winding slot, and the end of the winding 10 is clamped in the clamping groove 133 and welded to the wiring part 13.
[0071] This embodiment provides a pump, including the motor described above.
[0072] Although the present invention has been described in detail above with general descriptions, specific embodiments, and experiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A relay ring, characterized in that, include: The conductive assembly includes a conductive bus (11), pins (12), and a plurality of terminals (13). The pins (12) and the terminals (13) are both connected to the conductive bus (11) and extend along the axial direction of the relay ring. The plurality of terminals (13) are spaced apart circumferentially along the relay ring. Each terminal (13) includes a connecting portion (131) and two clamping portions (132). One end of the connecting portion (131) is connected to the conductive bus (11), and the other end is connected to the two clamping portions (132). The two clamping portions (132) are spaced apart. The connecting portion (131) and the two clamping portions (132) form a clamping groove (133). The clamping groove (133) is configured to accommodate the end of the winding (10) of the motor. An insulating covering part (4) covers the outside of the conductive bar (11), and the wiring part (13) and the pin (12) extend out of the insulating covering part (4).
2. The relay ring according to claim 1, characterized in that, The connecting part (131) has notches (134) on its first and second sides respectively, and the two clamping parts (132) are spaced apart along the first direction. The first side and the second side are arranged along the first direction.
3. The relay ring according to claim 2, characterized in that, The minimum distance between the inner wall of the notch (134) and the groove wall of the clamping groove (133) is H1, and the dimension of the clamping part (132) along the first direction is H2, wherein H1≥H2.
4. The relay ring according to claim 2, characterized in that, The notch (134) is an arc notch.
5. The relay ring according to claim 1, characterized in that, The relay ring includes three sets of conductive components. The three sets of conductive components are a first conductive component (1), a second conductive component (2), and a third conductive component (3) arranged sequentially and at intervals along the radial direction of the relay ring. One of the first conductive component (1), the second conductive component (2), and the third conductive component (3) is a U-phase conductive component, one is a V-phase conductive component, and one is a W-phase conductive component.
6. The relay ring according to claim 5, characterized in that, The wiring part (13) is connected to the side of the first conductive component (1), the second conductive component (2), or the third conductive component (3) near the center line of the relay ring.
7. The relay ring according to claim 5, characterized in that, The wiring section (13) is an integral structure; and / or The first conductive component (1) is an integral structure, the second conductive component (2) is an integral structure, and the third conductive component (3) is an integral structure; and / or The first conductive component (1), the second conductive component (2), and the third conductive component (3) are all formed by stamping and bending, and / or The insulating covering (4) is formed by plastic coating on the conductive bar (11) of the first conductive component (1), the conductive bar (11) of the second conductive component (2), and the conductive bar (11) of the third conductive component (3).
8. The relay ring according to claim 1, characterized in that, At least one positioning groove (41) is provided on the outer peripheral surface of the insulating covering part (4), the positioning groove (41) being configured to accommodate the positioning part (30) on the motor; and / or The insulating covering part (4) has at least two snap-fit holes (42), which are configured to snap into the buckle (40) on the motor.
9. An electric motor, characterized in that, The device includes an insulating frame (20) and a relay ring as described in any one of claims 1-8. The insulating frame (20) is provided with a plurality of winding grooves. The wiring part (13) corresponds to each of the winding grooves. A winding (10) is provided in the winding groove. The end of the winding (10) is clamped in the clamping groove (133) and welded to the wiring part (13).
10. A pump, characterized in that, Includes the motor as described in claim 9.