A flat cable plate for an electric motor and a flat cable plate assembly

Abstract

The utility model discloses a kind of wire arrangement plate for motor, it is circular, the wire arrangement plate has first axial surface (101) and the second axial surface (102) opposite to first axial surface, wherein the first axial surface is used to connect with the stator of motor, the side where the second axial surface is equipped with wire clamping groove, the wire clamping groove at least includes the radial wire clamping groove extending along the radial direction of wire arrangement plate and the circumferential wire clamping groove (105) extending along the circumferential direction of wire arrangement plate.

Description

Technical Field

[0001] This utility model relates to a wiring structure, and more particularly to a wiring structure for a motor. Background Technology

[0002] During the assembly and operation of the motor, the stator, as the core stationary component, requires its windings to be electrically connected to the external power supply, controller, or terminal block through multiple wires (such as lead wires, phase wires, and bridge wires) to ensure the stable conversion of electrical energy into the stator magnetic field.

[0003] Currently, due to the trend of miniaturization and lightweight design of the overall structure of motors, the space reserved for wiring inside motors is generally limited. The gaps between the stator and end cover, rotor, bearing and other components are very small, and the space available to accommodate wires is extremely compact.

[0004] Currently, stator wires are mostly arranged in a "free-flowing" or "simple binding" manner: that is, after the wires are led out from the stator windings, they hang naturally in the gaps inside the motor, or are loosely secured only by a few cable ties. However, this wiring method has many drawbacks:

[0005] For example, messy wires can easily pile up and tangle in a limited space, which not only occupies the radial / axial clearance required for rotor rotation, but may also rub or collide with the high-speed rotating rotor, the fan that moves with the rotor, and other components, causing damage to the wire insulation layer and leading to safety accidents such as stator winding short circuit and motor leakage.

[0006] In addition, the stator core and windings generate heat when the motor is running. The messy pile of wires will hinder the internal airflow circulation, causing local temperature rise, accelerating the aging of the wire insulation layer, and shortening the service life of the motor. At the same time, the distance between the wires and conductive parts such as the stator core and metal end caps is difficult to control, and insulation breakdown is easily caused by insufficient creepage distance.

[0007] In addition, the motor will generate continuous vibration during operation. Loose wires are prone to displacement under the action of vibration, which will cause the wires at the terminal to be pulled by force, resulting in loose wiring and poor contact, which in turn causes abnormal motor start-stop, speed fluctuation and other faults. Utility Model Content

[0008] One of the objectives of this invention is to provide a wiring board for motors that has a simple structure, is easy to use, and can achieve orderly wiring at a low cost.

[0009] To achieve the above objectives, this utility model proposes a wiring board for a motor. The wiring board is annular in shape and has a first axial surface and a second axial surface opposite to the first axial surface. The first axial surface is used to connect with the stator of the motor. A wire-locking groove is provided on one side of the second axial surface. The wire-locking groove includes at least a radial wire-locking groove extending along the radial direction of the wiring board and a circumferential wire-locking groove extending along the circumferential direction of the wiring board.

[0010] Furthermore, in the wiring board for motor described in this utility model, a protrusion extending axially outward from the first axial surface is provided on the first axial surface.

[0011] Furthermore, in the wiring board for motor described in this utility model, the first axial surface is provided with a plurality of protrusions, which are evenly distributed along the circumferential direction of the wiring board.

[0012] Furthermore, in the wiring board for motors described in this utility model, the radial wire-locking groove is provided on the second axial surface and / or provided within the projection area of ​​the second axial surface.

[0013] Furthermore, in the wiring board for motor described in this utility model, a first cantilever portion extending radially outward from the wiring board is provided on the second axial surface, and the circumferential wire-locking groove includes at least a first circumferential wire-locking groove formed on the first cantilever portion, and the first circumferential wire-locking groove is located on the outer side of the wiring board in the radial direction.

[0014] Furthermore, in the wiring board for motor described in this utility model, a second cantilever portion extending radially inward from the wiring board is provided on the second axial surface, and the circumferential wire-locking groove includes at least a second circumferential wire-locking groove formed on the second cantilever portion, and the second circumferential wire-locking groove is located inside the wiring board in the radial direction.

[0015] Furthermore, in the wiring board for motor described in this utility model, the circumferential wire-locking groove includes a third circumferential wire-locking groove, which is disposed on the first cantilever portion extending radially outward from the wiring board and / or the second cantilever portion extending radially inward from the wiring board. The third circumferential wire-locking groove is located within the projection area of ​​the second axial surface of the wiring board.

[0016] Furthermore, in the wiring board for motors described in this utility model, the distance between two adjacent radial wire-locking grooves is 2 to 5 mm; and / or the distance between two adjacent circumferential wire-locking grooves is 2 to 5 mm.

[0017] Furthermore, in the wiring board for motors described in this utility model, the wiring board is an insulated wiring board.

[0018] Another objective of this invention is to provide a wiring board assembly for motors, which has a simple structure, is easy to use, and can connect the stator wires of the motor with as few connection busbar types as possible, and achieve orderly wiring.

[0019] Based on the above-mentioned utility model objectives, this utility model also provides a wiring board assembly for a motor, which includes a wiring board for a motor as described above, and a connecting busbar that is clamped in the wiring slot.

[0020] Furthermore, in the wiring board assembly for motors described in this utility model, the distance between the cable clamping groove for the connecting busbar and the end of the connecting busbar is ≥10mm.

[0021] The wiring board for motors described in this utility model has a simple structure, which can efficiently utilize the internal space of the motor to achieve orderly wiring, and can also ensure the minimum distance between each busbar. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of the wiring board for motors according to this utility model is shown from one perspective in one embodiment.

[0023] Figure 2 This invention provides a schematic diagram of the structure of the wiring board for motors in one embodiment, shown from another perspective.

[0024] Figure 3 This diagram shows a structural schematic of the wiring board assembly for a motor according to one embodiment of the present invention. Detailed Implementation

[0025] The wiring board and wiring board assembly for motors described in this utility model will be further explained and described below with reference to the accompanying drawings and specific embodiments. However, this explanation and description do not constitute an undue limitation on the technical solution of this utility model.

[0026] During the assembly and operation of the motor, the stator, as the core stationary component, requires its windings to be electrically connected to the external power supply, controller, or terminal block through multiple wires (such as lead wires, phase wires, and bridge wires) to ensure the stable conversion of electrical energy into the stator magnetic field.

[0027] Currently, on the one hand, due to the trend of miniaturization and lightweight design of the overall structure of motors, the space reserved for wiring inside motors is generally limited. The gaps between the stator and end cover, rotor, bearing and other components are very small, and the space available to accommodate wires is extremely compact.

[0028] On the other hand, the current arrangement of stator wires is mostly "free placement" or "simple binding": that is, after the wires are led out from the stator windings, they hang naturally in the gaps inside the motor, or are loosely fixed only by a few cable ties. However, this wiring method has many drawbacks and can easily cause motor failure.

[0029] Therefore, in one embodiment of this utility model, it is desirable to provide a wiring board for a motor that has a simple structure, low manufacturing cost, and is easy to use, and can achieve orderly wiring within the small space of the motor.

[0030] Figure 1 A schematic diagram of the structure of the wiring board for motors according to this utility model is shown from one perspective in one embodiment.

[0031] Figure 2 This invention provides a schematic diagram of the structure of the wiring board for motors in one embodiment, shown from another perspective.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments, the wiring board 100 for the motor is annular and is used to be mounted on the axial end face of the stator of the motor, and can be used as an insulating end plate of the stator.

[0033] The cable board 100 has a first axial surface 101 and a second axial surface 102 opposite to the first axial surface, wherein the first axial surface is used for connection with the stator of the motor.

[0034] In some more specific implementations, such as Figure 1 As shown, a protrusion 103 is provided on the first axial surface 101, extending axially outward from the first axial surface. The protrusion 103 can be adapted to be inserted into the groove on the end face of the stator shaft, thereby realizing the connection between the wiring board and the motor stator.

[0035] like Figure 1 As shown, in some more specific embodiments, the protrusion 103 may be provided in a plurality of forms, which are arranged along the circumferential direction of the ribbon cable plate, and more preferably, the plurality of protrusions are evenly arranged along the circumferential direction of the ribbon cable plate.

[0036] It should be noted that this utility model does not limit the number of protrusions 103, which can be as follows: Figure 1 The six shown could also be any number other than six or less.

[0037] Of course, in other specific implementations, the connection between the cable board 100 and the motor stator can also be made in other ways, such as by adhesive bonding or snap-fit ​​connection.

[0038] like Figure 2 As shown, the second axial surface 102 of the cable board 100 is provided on one side for setting the busbar. The cable groove includes at least a radial cable groove 104 extending along the radial direction of the cable board and a circumferential cable groove 105 extending along the circumferential direction of the cable board.

[0039] The radial wire-locking groove 104 is used to provide a busbar that extends at least partly in the radial direction, and the circumferential wire-locking groove 105 is used to provide a busbar that extends at least partly in the circumferential direction.

[0040] It should be noted that in this utility model, the wire-locking groove is located on the side of the second axial surface 102, which is the other side opposite to the side of the first axial surface, and does not refer only to the second axial surface itself. The "side" of the wire-locking groove on the second axial surface 102 means that the wire-locking groove can not only be set on the second axial surface, but also in the projection area of ​​the second axial surface, or in the radially inward or radially outward area of ​​the second axial surface.

[0041] With this configuration, the cable tray of this utility model can neatly and orderly arrange the busbars used for motor electrical connection around the cable tray, saving internal space of the motor and effectively avoiding various faults and risks that may be caused by the free hanging or bundling of wires.

[0042] In order to make the cable board adaptable to busbars of various shapes and positions, and to make the cable routing as compact and convenient as possible while ensuring the minimum distance between busbars, the cable slots involved in this utility model can include various types.

[0043] For example, Figure 2 As shown, in some more specific embodiments, the radial slot can be provided on the second axial surface 102, or it can be provided within the projection area of ​​the second axial surface. For example, in Figure 2 In the illustrated embodiment, the radial wire-locking groove 104 is directly disposed on the second axial surface, while another radial wire-locking groove 1041 is disposed within the projection area of ​​the second axial surface at a certain axial distance from the second axial surface. By providing radial wire-locking grooves at different positions, it is possible to adapt to busbars of various positions or shapes.

[0044] Of course, in other embodiments, the wire clamping groove can be positioned outside the second axial surface and its projected area by providing an extended cantilever and having the radial wire clamping groove disposed on the cantilever. Compared to this method, the structure with the radial wire clamping groove disposed on the second axial surface and its projected area is more compact and has better structural strength.

[0045] In some specific implementations, there are also various types of circumferential cable grooves.

[0046] For example, in Figure 2 In the embodiment shown, a first cantilever portion 106 of a cantilever structure extending radially outward from the cable tray is provided on the second axial surface. The circumferential cable retaining groove may include a first circumferential cable retaining groove 1051 formed on the first cantilever portion. It can be seen that the first circumferential cable retaining groove 1051 is located on the outer side of the cable tray in the radial direction.

[0047] In addition, a second cantilever portion 107 extending radially inward from the cable tray is provided on the second axial surface. The circumferential cable retaining groove may also include a second circumferential cable retaining groove 1052 formed on the second cantilever portion 107. It can be seen that the second circumferential cable retaining groove 1052 is located inside the cable tray in the radial direction.

[0048] Additionally, the circumferential cable retaining groove may also include a third circumferential cable retaining groove 1053. Although it is provided on the first cantilever portion 106 extending radially outward from the cable tray and / or the second cantilever portion 107 extending radially inward from the cable tray, the third circumferential cable retaining groove 1053 is located within the projection area of ​​the second axial surface of the cable tray. With this arrangement, at least two circumferential cable retaining grooves with unequal distances from the center of the cable tray can be provided on the same cantilever portion.

[0049] Of course, in some specific implementation methods, such as Figure 2 As shown, there can also be a second cantilever section, which is provided only with a second circumferential wire groove 1052.

[0050] In addition, in some specific implementation methods, such as Figure 2 As shown, there may also be a second cantilever 107, which is provided with at least two second circumferential cable clamping grooves that are not equidistant from the center of the cable tray.

[0051] Of course, in some specific embodiments, although not shown in the figure, there may be a first cantilever portion that only has a first circumferential wire-locking groove. Alternatively, in some specific embodiments, there may be a first cantilever portion that has at least two first circumferential wire-locking grooves that are not equidistant from the center of the cable tray.

[0052] In this way, the ribbon cable board can achieve orderly wiring in multiple rows.

[0053] To maintain structural compactness while ensuring minimal distance between busbars, in some specific embodiments, the spacing between two adjacent radial cable clamping slots can be 2–5 mm. Similarly, the spacing between two adjacent circumferential cable clamping slots can also be 2–5 mm.

[0054] Although the outer surface of the busbar has an insulating sheath, in order to further ensure insulation, in some specific embodiments, the cable board 100 can be an insulated cable board, such as a plastic cable board.

[0055] In some embodiments, this utility model also provides a wiring board assembly for a motor.

[0056] Figure 3 This diagram shows a structural schematic of the wiring board assembly for a motor according to one embodiment of the present invention.

[0057] like Figure 3 As shown, in some embodiments, the second axial surface side of the cable board 100 has a plurality of radial cable-holding grooves 104 and a plurality of circumferential cable-holding grooves 105, wherein at least a portion of the radial extension portion of the busbar 108 extending in the radial direction is provided in the radial cable-holding groove 104, and at least a portion of the circumferential extension portion of the busbar 108 extending in the circumferential direction is provided in the circumferential cable-holding groove 105.

[0058] With this configuration, the present invention can be compatible with busbars of various sizes, shapes, and positions with the widest possible adaptability. Furthermore, multiple busbars can be arranged side-by-side in the radial and / or axial directions, thereby saving wiring space and making the wiring neat and orderly.

[0059] Furthermore, due to the use of the wiring board of this utility model, the busbars set on the wiring board can also have their shapes standardized into several types by optimizing the path, which is conducive to the standardized manufacturing of busbars and can achieve the connection of motor stator wires with as few busbar types as possible.

[0060] For example, in such Figure 3 In the illustrated embodiment, the first busbar 1081 has a main body extending in the circumferential direction and two ends extending in the radially inward and radially outward directions, respectively, which can be used for connection with the phase wires of the motor electronics. Alternatively, the second busbar 1082 is trapezoidal and has two protruding legs, which can be used for star connection with the phase wires.

[0061] It should be noted that, Figure 3 The shape, position, and length of each busbar 108 shown are exemplary and are not intended to limit the present invention.

[0062] In addition, in some specific embodiments, in order to further avoid the adverse effects that the high temperature of welding may cause when the busbar is welded to the motor wires, the distance between the wire clamping groove for the busbar and the end of the busbar is ≥10mm.

[0063] It can be seen that the wiring board and its components for motors described in this utility model, with their compact structural design, efficiently utilize the internal space of the motor to achieve orderly wiring, and also ensure the minimum distance between each busbar.

[0064] It should be noted that the prior art within the scope of protection of this utility model is not limited to the embodiments given in this utility model document. All prior art that does not contradict the solution of this utility model, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the scope of protection of this utility model.

[0065] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0066] It should also be noted that the embodiments listed above are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments, and any similar changes or modifications made thereto that can be directly derived or easily conceived by those skilled in the art from the content disclosed in this utility model should fall within the protection scope of this utility model.

Claims

1. A wiring board for an electric motor, characterized in that, The cable board is annular in shape and has a first axial surface (101) and a second axial surface (102) opposite to the first axial surface. The first axial surface is used to connect with the stator of the motor. A wire-locking groove is provided on one side of the second axial surface. The wire-locking groove includes at least a radial wire-locking groove extending along the radial direction of the cable board and a circumferential wire-locking groove (105) extending along the circumferential direction of the cable board.

2. The wiring board for a motor as described in claim 1, characterized in that, The first axial surface is provided with a protrusion (103) extending outward from the first axial surface.

3. The wiring board for a motor as described in claim 2, characterized in that, The first axial surface is provided with a plurality of protrusions, which are evenly distributed along the circumferential direction of the cable board.

4. The wiring board for a motor as described in claim 1, characterized in that, Radial slots (104, 1041) are provided on the second axial surface and / or within the projection area of ​​the second axial surface.

5. The wiring board for a motor as described in claim 1, characterized in that, The second axial surface is provided with a first cantilever portion (106) extending radially outward from the cable tray, and the circumferential cable retaining groove includes at least a first circumferential cable retaining groove (1051) formed on the first cantilever portion, and the first circumferential cable retaining groove is located outside the cable tray in the radial direction.

6. The wiring board for a motor as described in claim 1, characterized in that, The second axial surface is provided with a second cantilever portion (107, 1071) extending radially inward from the cable tray. The circumferential cable retaining groove includes at least a second circumferential cable retaining groove (1052) formed on the second cantilever portion. The second circumferential cable retaining groove is located inside the cable tray in the radial direction.

7. The wiring board for a motor as described in claim 1, characterized in that, The circumferential cable retainer groove includes a third circumferential cable retainer groove (1053), which is disposed on a first cantilever portion extending radially outward from the cable tray and / or a second cantilever portion extending radially inward from the cable tray. The third circumferential cable retainer groove is located within the projection area of ​​the second axial surface of the cable tray.

8. The wiring board for a motor as described in claim 1, characterized in that, The spacing between two adjacent radial slots is 2-5 mm; and / or the spacing between two adjacent circumferential slots is 2-5 mm.

9. The wiring board for a motor as described in claim 1, characterized in that, The cable board is an insulated cable board.

10. A wiring board assembly for a motor, characterized in that, It includes a wiring board for a motor as described in any one of claims 1-9, and a busbar (108) fitted into the wiring slot.

11. The wiring harness assembly for a motor as described in claim 10, characterized in that, The distance between the slot for the busbar and the end of the busbar is ≥10mm.

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