Motor bearing plate and vehicle motor assembly

Abstract

The utility model relates to a motor bearing plate and a vehicle motor assembly. The motor bearing plate is used for supporting and fixing a motor stator, and a winding lead of the motor stator extends out of the motor bearing plate and is connected with a corresponding connecting terminal of a wire harness. According to the utility model, the motor bearing plate is provided with the clamping grooves which are used for clamping the cables of the wire harness. The motor assembly comprises a wire harness, a motor stator and the motor bearing plate, the motor stator is fixed on the motor bearing plate, the wire harness comprises a plurality of connecting wires, and the connecting wires are fixed on the motor bearing plate through the clamping grooves. According to the utility model, firm fixation of the wire harness is realized through the clamping groove, and force borne by the wire harness is prevented from being transmitted to a part connected with the connecting terminal of the wire harness, so that the risk of poor contact of a motor caused by loosening of the connecting part is prevented.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and more particularly to a vehicle motor assembly and a motor bearing plate thereof. Background Art

[0002] The vehicle motor assembly includes a motor stator and a motor carrier plate. Other motor components are housed in the motor stator, and the motor carrier plate is used to support and fix the motor stator. The leads of each phase winding of the motor stator extend from the motor carrier plate and are connected to the corresponding terminals of the wiring harness, usually by welding.

[0003] During vehicle operation, the wiring harness is often subjected to forces. If the wiring harness is not securely fastened, this force can be transferred to the welds, causing them to loosen and potentially causing poor contact with the motor.

[0004] Therefore, there is a need to firmly fix the wiring harness of the vehicle motor assembly to prevent the welding parts of the wiring harness and the winding leads from loosening, thereby causing the motor to stop working or not work continuously due to poor contact. Utility Model Content

[0005] The present invention provides a method for securely securing a wiring harness. In a first aspect, the present invention provides a motor carrier plate for supporting and securing a motor stator. Winding leads of the motor stator extend from the motor carrier plate and connect to corresponding connectors of the wiring harness. According to the present invention, the motor carrier plate is provided with a retaining groove for retaining the individual cables of the wiring harness. The provision of the retaining groove ensures a secure fixation of the individual cables of the wiring harness.

[0006] According to an embodiment, the slot is defined by two protrusions protruding from the surface of the motor carrier plate. Preferably, each protrusion is provided with a ridge on the side facing the slot to enhance the fixing effect of the slot. Preferably, the ridge is arranged in the middle position.

[0007] Preferably, the side of each protrusion facing away from the slot gradually becomes thicker from top to bottom. With this arrangement, the strength of the protrusion can be improved.

[0008] Preferably, the top of each protrusion is rounded. This arrangement can avoid damaging the wiring harness.

[0009] Preferably, the motor carrier plate is provided with a slot near the connection terminal of each cable in the wiring harness. This arrangement helps prevent the force acting on the wiring harness from being transferred to the part connected to the connection terminal of the wiring harness, such as the part welded to the winding lead of the motor stator.

[0010] According to an embodiment, multiple groups of slots are spaced apart on the motor carrier plate, starting from the connection terminals connecting the wiring harness to the winding leads, along the extension direction of the wiring harness. These slots are not aligned, thereby reducing the transfer of tension from the wiring harness end to the welding end. The number of slots in each group corresponds to the number of connection terminals connected to the winding leads of the wiring harness, for example, three. Each group of slots can be spaced apart or continuous.

[0011] According to an embodiment, the motor carrier plate further includes a wire harness clamp, which is constructed as a hinged structure and includes two halves, the two halves being hinged at one end, and one half being able to rotate relative to the other half about a hinge axis to open and close the wire harness clamp. Preferably, when the wire harness clamp is closed, the wire harness is locked, thereby securing the wire harness and reducing the possibility of the wire harness being transferred to the welding position. At the same time, this design also provides a mechanical fixing solution, such as by screws passing through through holes provided on the other end of the two halves, thereby effectively reducing the external tension on the wire harness being transferred to the welding position.

[0012] Preferably, the sides of the two halves facing the harness are each formed with a concave configuration to conform to the contours of the individual cables of the harness. This arrangement can accommodate different wire diameters and avoid excessive squeezing of the individual cables of the harness when closing.

[0013] According to an embodiment, the motor carrier plate is a plastic molded component.

[0014] In a second aspect, the present invention provides a vehicle motor assembly comprising a wiring harness, a motor stator, and the aforementioned motor carrier plate. The motor stator is secured to the motor carrier plate, and the wiring harness comprises a plurality of connecting wires, each of which is secured to the motor carrier plate, for example, via slots and / or wiring harness clamps on the motor carrier plate.

[0015] The connecting wires include three winding connecting wires and a grounding wire. The winding connecting wires are respectively connected to the three-phase winding leads of the motor stator. The grounding wire is connected to the stator laminations constituting the motor stator, for example, by screws passing through the motor bearing plate.

[0016] The present invention securely secures the wiring harness through the slots and harness clamps, preventing the forces experienced by the harness from being transmitted to, for example, the welds between the motor stator winding leads and the harness terminals, thereby preventing the risk of the welds becoming loose. Furthermore, the slots and harness clamps of the present invention can be formed during the molding of the motor carrier plate, making them easy to manufacture. No additional structure is required to secure the harness, reducing assembly parts and steps, and lowering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] An embodiment of the present invention will be explained in more detail in the accompanying drawings, in which:

[0018] Figure 1is a schematic perspective view of a motor assembly including a motor carrier plate according to an embodiment of the present invention;

[0019] Figure 2 is based on Figure 1 A schematic enlarged perspective view of one of the slots of the motor carrier plate is shown;

[0020] Figure 3 is based on Figure 1 A schematic enlarged perspective view of the wiring harness clamp of the motor carrier plate is shown, with the wiring harness clamp in an open position.

[0021] In the accompanying drawings, for the sake of clarity, the embodiments of the present invention are shown in a simplified manner. The accompanying drawings are not necessarily shown to scale. Like reference numerals in the accompanying drawings represent similar components. DETAILED DESCRIPTION

[0022] Figure 1 A schematic diagram of a motor assembly including a motor carrier plate according to an embodiment of the present invention is shown. As shown, the motor assembly 1 comprises a motor stator 10 and a motor carrier plate 20. A motor (not shown) is housed within the stator 10, which is secured to the motor carrier plate 20. The motor stator 10 is provided with locating pins 11, and the motor carrier plate 20 has corresponding locating holes 21 to facilitate assembly of the two components. The motor carrier plate 20 is typically a molded plastic component.

[0023] Motor assembly 1 also includes a wiring harness 30, which comprises a sleeve 31 and three winding connection wires 32. Each winding connection wire 32 has a connection terminal 33 for welding to a corresponding one of the three phase winding leads 40 of the motor stator. Furthermore, to meet electromagnetic compatibility requirements, wiring harness 30 also includes a grounding wire 34 with a connection terminal 35. Grounding wire 34 passes through motor carrier plate 20 and is connected to the stator laminations that constitute the motor stator via screws 36. In this example, sleeve 31 does not need to cover all cables, exposing the individual cables of the wiring harness for easier connection.

[0024] The motor carrier plate 20 is provided with a plurality of slots for fixing the winding connection wires 32 and the ground wires 34 of the wiring harness 30. Figure 1In the embodiment, starting from the vicinity of the connection terminal 33 and along the extension direction of the winding connection wire 32, three groups of slots are provided on the motor carrier plate 20, namely slots 22, 23 and 24, each group of slots has three slots, which are used to fix the three winding connection wires 32 respectively. For the grounding wire 34, a slot 25 is provided on the motor carrier plate 20. In addition, near the sleeve 31, the motor carrier plate 20 is provided with a wire harness clamp 26, which is a hinged structure so that it can be opened and closed. When the wire harness clamp 26 is closed, the cable can be tightened to prevent external force of the cable from being transmitted to the welding point, and at the same time, an optional mechanical fixing position is provided. If necessary, the wire harness clamp 26 can be locked by a screw 27 to further fix the wire harness 20 and increase the reliability of the design.

[0025] At the locations where the connecting terminals 33 and the winding leads 40 are to be welded, the motor carrier plate 20 is provided with a potting area 28, which is constructed as an annular structure protruding from the surface of the motor carrier plate 20 to define a groove to facilitate potting after welding so that the welding location is sealed and insulated.

[0026] The slots 22 are separated from each other and are respectively adjacent to three potting areas 28. The slots 23 are also separated from each other, while the slots 24 are adjacent to each other. The slots 22, 23 and 24 are spaced apart from each other.

[0027] Each of the latching slots 22 , 23 , 24 and 25 is defined by two protrusions protruding from the surface of the motor carrier plate 20 . Figure 2 A schematic diagram illustrates the structure of one of the retaining slots 23. As shown, the retaining slot 23 is defined by two protrusions 23a, between which the winding connection wire 32 is retained. Furthermore, each protrusion 23a has a ridge 23b on the side facing the winding connection wire 32 to enhance the retention of the retaining slot 23. In this example, the ridge 23b is positioned in the middle, but other locations are also possible.

[0028] To improve the strength of the protrusion 23a, the side of each protrusion 23a facing away from the winding connection wire 32 gradually becomes thicker from top to bottom. In addition, the top of each protrusion 23a is rounded to avoid damaging the winding connection wire 32.

[0029] The structures of the remaining card slots are similar to that of the card slot 23 and will not be described in detail here.

[0030] Figure 3The structure of the harness clamp 26 is shown. As shown in the figure, the harness clamp 26 is a hinged structure, including a first half 26a and a second half 26b. The two halves are hinged together at one end, and the other ends are provided with through holes 26c and 26d. The first half 26a can rotate relative to the second half 26b about the hinge axis to open and close the harness clamp 26. When closed, it can tighten the cable to prevent external forces from being transmitted to the welding point, while providing an optional mechanical fixing position, which can be fixed by screws 27 (see Figure 1 ) passes through 26c and 26d to lock the wire harness 30, thereby further securing the wire harness 30. In addition, a concave structure 26e is formed on the side of the two halves facing the wire harness 30 to conform to the contours of the cables (winding connection wire 32 and ground wire 34) of the wire harness 30, thereby preventing the cables of the wire harness 30 from being excessively squeezed when closing.

[0031] The embodiments described herein are for illustrative purposes only. Furthermore, the features disclosed in this utility model may be used independently of other features disclosed in this utility model, or may be combined with other features disclosed in this utility model when necessary. Therefore, this utility model is not limited to the embodiments shown herein. Based on the embodiments of this utility model, those skilled in the art may derive other embodiments without creative effort, and these embodiments also fall within the scope of protection of this utility model.

Claims

1. A motor carrier plate for supporting and fixing a motor stator, wherein winding leads of the motor stator extend from the motor carrier plate and are connected to corresponding connection terminals of a wiring harness, characterized in that: The motor carrier plate is provided with a clamping slot for clamping the cables of the wiring harness.

2. The motor carrier plate according to claim 1, characterized in that: The latching slot is defined by two protrusions protruding from the surface of the motor carrier plate.

3. The motor carrier plate according to claim 2, characterized in that: A ridge is provided on a side of each protrusion facing the slot, and the ridge is arranged at a middle position.

4. The motor carrier plate according to claim 2 or 3, characterized in that: A side of each protrusion facing away from the card slot gradually becomes thicker from top to bottom.

5. The motor carrier plate according to claim 2 or 3, characterized in that: The top of each protrusion is rounded.

6. The motor carrier plate according to any one of claims 1 to 3, characterized in that: The motor carrier plate is provided with card slots near the connection terminals of each cable of the wiring harness.

7. The motor carrier plate according to any one of claims 1 to 3, characterized in that: Starting from the connection terminals where the wiring harness is connected to the winding leads, multiple groups of slots are arranged at intervals on the motor carrier plate along the extension direction of the wiring harness, and the number of slots in each group corresponds to the number of connection terminals where the wiring harness is connected to the winding leads.

8. The motor carrier plate according to any one of claims 1 to 3, characterized in that: The motor carrier plate further comprises a harness clamp which is constructed as a hinged structure and comprises two halves hinged at one end, wherein one half can rotate relative to the other half around a hinge axis to open and close the harness clamp.

9. The motor carrier plate according to claim 8, characterized in that: When the harness clamp is closed, the harness clamp is locked by screws passing through through holes provided on the other ends of the two halves.

10. The motor carrier plate according to claim 8, characterized in that: The sides of the two halves facing the wiring harness are each formed into a concave configuration to conform to the contours of the individual cables of the wiring harness.

11. A vehicle motor assembly, comprising a wiring harness and a motor stator, characterized in that: The motor assembly includes a motor carrier plate according to any one of claims 1 to 10, wherein the motor stator is fixed on the motor carrier plate, and the wiring harness includes a plurality of connecting wires, each connecting wire being fixed to the motor carrier plate via a slot.

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