Grounding structure, motor and driving assembly
By using conductive plates to connect the stator core and the circuit board in the linear motor, the problem of poor contact caused by the high grounding resistance of the stator core is solved, and a more reliable electrical connection is achieved.
Patent Information
- Application Number
- CN202423323579.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In linear motors, the grounding resistance between the stator core and the circuit board is relatively high, which can easily lead to poor contact.
Conductive sheets are used to connect the stator core and the circuit board. The current from the stator core is led out to the circuit board through the conductive sheets, and then introduced into the stator mounting bracket through the circuit board, ultimately achieving grounding.
It effectively reduces the grounding resistance of the stator core, improves the reliability of the electrical connection between the conductive sheet and the stator core and circuit board, and avoids poor contact.
Smart Images
Figure CN223785903U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor grounding technology, and in particular to a grounding structure, a motor and a drive assembly. Background Technology
[0002] A linear motor is a transmission device that directly converts electrical energy into linear motion mechanical energy without requiring any intermediate conversion mechanism.
[0003] In related technologies, linear motors are generally grounded by connecting the stator core to a PCB (Printed Circuit Board). However, the grounding resistance is relatively high, which can easily lead to poor contact. Utility Model Content
[0004] The main purpose of this utility model is to propose a grounding structure, motor and drive assembly, which aims to solve the problem of high grounding resistance of stator core, which easily leads to poor contact.
[0005] To achieve the above objectives, this utility model proposes a grounding structure, comprising:
[0006] Stator mounting bracket;
[0007] A frame, wherein the frame is disposed on the stator mounting bracket;
[0008] Stator core, the stator core being disposed on the frame;
[0009] A conductive sheet, one end of which is electrically connected to the stator core;
[0010] A circuit board, which is electrically connected to the end of the conductive sheet away from the stator core, and is disposed on the stator mounting bracket so that the circuit board is grounded through the stator mounting bracket.
[0011] In one embodiment, one end of the conductive sheet is sandwiched between the frame and the stator core.
[0012] In one embodiment, the frame includes an upper frame and a lower frame spliced together, and the stator core is sandwiched between the upper frame and the lower frame;
[0013] One end of the conductive sheet is clamped between the stator core and the upper frame or the lower frame.
[0014] In one embodiment, the upper skeleton and the lower skeleton are externally wound with a winding group, which is used to apply winding pressure to the upper skeleton and the lower skeleton.
[0015] In one embodiment, the skeleton has a first sidewall, a second sidewall, and a third sidewall connected in sequence, and the conductive sheet includes:
[0016] The first connecting piece is sandwiched between the frame and the stator core;
[0017] The second connecting piece is connected to the side of the first connecting piece that is exposed outside the skeleton and abuts against the first sidewall;
[0018] The third connecting piece is connected to the side of the second connecting piece away from the first connecting piece and abuts against the second sidewall;
[0019] The fourth connecting piece is connected to the side of the third connecting piece away from the second connecting piece and abuts against the third sidewall. The fourth connecting piece is electrically connected to the circuit board.
[0020] In one embodiment, the grounding structure further includes a pin located on the frame, and the end of the conductive sheet away from the stator core is electrically connected to the circuit board via the pin.
[0021] In one embodiment, the pin passes through the conductive sheet;
[0022] And / or, the pins are soldered to the circuit board.
[0023] In one embodiment, the circuit board is connected to the stator mounting bracket via a grounding connector.
[0024] To achieve the above objectives, this utility model also proposes an electric motor, including the grounding structure described above.
[0025] To achieve the above objectives, this utility model also proposes a drive assembly, including the motor described above.
[0026] The technical solution of this utility model uses conductive sheets to connect the stator core and the circuit board, so that the current of the stator core is led out from the conductive sheets to the circuit board, then introduced into the stator mounting bracket through the circuit board, and finally grounded through the stator mounting bracket. Because the conductive sheets connect the stator core and the circuit board, a tight connection is ensured, effectively guaranteeing the reliability of the electrical connection between the conductive sheets and the stator core and circuit board, thereby reducing the grounding resistance of the stator core and effectively solving the problem of high grounding resistance of the stator core, which easily leads to poor contact. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0028] Figure 1 This is a partial structural schematic diagram of an embodiment of the grounding structure provided by this utility model;
[0029] Figure 2 for Figure 1 The left view;
[0030] Figure 3 for Figure 1 The main view;
[0031] Figure 4 for Figure 1 Exploded view;
[0032] Figure 5 This is a schematic diagram of another part of the structure of an embodiment of the grounding structure provided by this utility model.
[0033] Explanation of icon numbers:
[0034] label name label name 10 Stator mounting bracket 41 First connecting piece 20 skeleton 42 Second connecting piece 21 upper skeleton 43 Third connecting piece 22 Lower skeleton 44 Fourth connecting piece 20a First side wall 40a Mounting holes 20b Second side wall 50 circuit board 20c Third side wall 60 Winding assembly 30 stator core 70 pin 40 conductive sheet 80 Grounding connector
[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0039] In related technologies, linear motors are generally grounded by connecting the stator core to the PCB (Printed Circuit Board). However, when the PCB is directly connected to the stator core, the clamping force between the PCB and the stator core is insufficient, resulting in poor tightness and a large grounding resistance of the stator core, which can easily lead to poor contact.
[0040] Based on the above problems, this utility model proposes a grounding structure to solve the problem of high grounding resistance of stator core 30, which easily leads to poor contact.
[0041] Please see Figures 1 to 5 In one embodiment of this utility model, the grounding structure includes a stator mounting frame 10, a frame 20, a stator core 30, a conductive sheet 40, and a circuit board 50; the frame 20 is disposed on the stator mounting frame 10; the stator core 30 is disposed on the frame 20; one end of the conductive sheet 40 is electrically connected to the stator core 30; the circuit board 50 is electrically connected to the end of the conductive sheet 40 away from the stator core 30, and is disposed on the stator mounting frame 10, so that the circuit board 50 is grounded through the stator mounting frame 10.
[0042] The technical solution of this utility model uses a conductive sheet 40 to connect the stator core 30 and the circuit board 50, so that the current of the stator core 30 is led out from the conductive sheet 40 to the circuit board 50, and then introduced into the stator mounting bracket 10 through the circuit board 50, and finally grounded through the stator mounting bracket 10. Because the conductive sheet 40 connects the stator core 30 and the circuit board 50, a tight connection is formed between the conductive sheet 40 and the stator core 30 and the circuit board 50, effectively ensuring the reliability of the electrical connection between the conductive sheet 40 and the stator core 30 and the circuit board 50, thereby reducing the grounding resistance of the stator core 30 and effectively solving the problem of high grounding resistance of the stator core 30, which easily leads to poor contact.
[0043] In this embodiment, the stator mounting bracket 10 is equivalent to the mounting base of the stator core 30. The stator core 30 is clamped and fixed by the frame 20, and then the frame 20 with the stator core is mounted on the stator mounting bracket 10. The frame 20 is an insulating component, and the stator mounting bracket 10 is a conductive component. The current of the stator core 30 is led out through the conductive sheet 40 to the circuit board 50, and then introduced into the stator mounting bracket 10 through the circuit board 50, finally achieving grounding through the stator mounting bracket 10.
[0044] In practical applications, the conductive sheet 40 can be a copper foil sheet, or an aluminum sheet, aluminum alloy sheet, or other structural components that can achieve conductivity.
[0045] Furthermore, the conductive sheet 40 can be directly electrically connected to the circuit board 50, or it can be indirectly electrically connected to the circuit board 50 through other conductive structural components.
[0046] Please see Figures 1 to 4 In one embodiment of this utility model, one end of the conductive sheet 40 is sandwiched between the frame 20 and the stator core 30.
[0047] With this configuration, by using the frame 20 and the stator core 30 to clamp one end of the conductive sheet 40, the tight connection between the conductive sheet 40 and the electronic core can be improved, thereby further enhancing the reliability of the electrical connection between the conductive sheet 40 and the stator core 30 and effectively reducing the grounding resistance of the stator core 30.
[0048] In some embodiments, an adhesive backing can be used to initially fix one end of the conductive sheet 40 to the frame 20, so that an adhesive layer is formed between the conductive sheet 40 and the frame 20, which can improve the installation reliability of the conductive sheet 40, thereby further improving the electrical connection reliability between the conductive sheet 40 and the stator core 30.
[0049] Please see Figures 1 to 4 In one embodiment of the present invention, the frame 20 includes an upper frame 21 and a lower frame 22 that are spliced together, and the stator core 30 is sandwiched between the upper frame 21 and the lower frame 22; one end of the conductive sheet 40 is sandwiched between the stator core 30 and the upper frame 21 or the lower frame 22.
[0050] This configuration, using the upper frame 21 and the lower frame 22 to clamp and fix the stator core 30, allows the conductive sheet 40 to be clamped between the stator core 30 and the upper frame 21 or the lower frame 22, making it easier to install the stator core 30 and the conductive sheet 40, and improving the installation reliability of the stator core 30 and the conductive sheet 40.
[0051] In this embodiment, the stator core 30 is held by the upper frame 21 and the lower frame 22, and the two ends of the stator core 30 are exposed. The two ends of the stator core 30 are the air gap surfaces of the motor.
[0052] In practical applications, the upper frame 21 and the lower frame 22 can be detachably connected by means of screws, snap-fit, etc., so as to facilitate the assembly and disassembly of the stator core 30 and the conductive sheet 40.
[0053] Please see Figure 1 In one embodiment of the present invention, a winding group 60 is wound around the upper skeleton 21 and the lower skeleton 22, and the winding group 60 is used to apply winding pressure to the upper skeleton 21 and the lower skeleton 22.
[0054] With this configuration, the winding assembly 60 can be wound around the upper frame 21 and the lower frame 22. The wound winding assembly 60 can apply winding pressure to the upper frame 21 and the lower frame 22, thereby increasing the clamping force of the upper frame 21 and the lower frame 22 on the stator core 30 and the conductive sheet 40, thereby further improving the reliability of the electrical connection between the conductive sheet 40 and the stator core 30, and achieving the purpose of reducing grounding resistance.
[0055] Please see Figure 4 In one embodiment of this utility model, the frame 20 is provided with a first sidewall 20a, a second sidewall 20b, and a third sidewall 20c connected in sequence. The conductive sheet 40 includes a first connecting piece 41, a second connecting piece 42, a third connecting piece 43, and a fourth connecting piece 44. The first connecting piece 41 is sandwiched between the frame 20 and the stator core 30. The second connecting piece 42 is connected to the side of the first connecting piece 41 exposed outside the frame 20 and abuts against the first sidewall 20a. The third connecting piece 43 is connected to the side of the second connecting piece 42 away from the first connecting piece 41 and abuts against the second sidewall 20b. The fourth connecting piece 44 is connected to the side of the third connecting piece 43 away from the second connecting piece 42 and abuts against the third sidewall 20c. The fourth connecting piece 44 is electrically connected to the circuit board 50.
[0056] This configuration, where the conductive sheet 40 is shaped to match the shape of the outer wall of the frame 20, allows the first connecting piece 41 of the conductive sheet 40 to be sandwiched between the frame 20 and the stator core 30, and the second connecting piece 42, the third connecting piece 43, and the fourth connecting piece 44 of the conductive sheet 40 to abut against the first side wall 20a, the second side wall 20b, and the third side wall 20c of the frame 20, respectively. This increases the contact area between the conductive sheet 40 and the frame 20, thereby improving the installation reliability of the conductive sheet 40.
[0057] In some embodiments, the conductive sheet 40 can be obtained by bending a single sheet structure three times to form a first connecting sheet 41, a second connecting sheet 42, a third connecting sheet 43, and a fourth connecting sheet 44.
[0058] Please see Figures 1 to 4In one embodiment of this utility model, the grounding structure further includes a pin 70, which is disposed on the frame 20. The end of the conductive sheet 40 away from the stator core 30 is electrically connected to the circuit board 50 through the pin 70.
[0059] This configuration makes assembly easier by connecting the conductive sheet 40 to the circuit board 50 via pin 70, and also improves the reliability of the electrical connection between the conductive sheet 40 and the circuit board 50.
[0060] In practical applications, pin 70 and conductive sheet 40 can be connected by welding, screw connection, snap-fit, or other methods to achieve electrical connection. Similarly, pin 70 and circuit board 50 can also be connected by welding, screw connection, snap-fit, or other methods to achieve electrical connection.
[0061] Please see Figure 4 In one embodiment of this utility model, the pin 70 passes through the conductive sheet 40.
[0062] This configuration, by threading pin 70 through conductive sheet 40, can improve the connection between pin 70 and conductive sheet 40, and prevent pin 70 from becoming detached from conductive sheet 40 during use, thus affecting the grounding effect.
[0063] In some embodiments, the end of the conductive sheet 40 away from the stator core 30 may be provided with a mounting hole 40a, and the pin 70 passes through the mounting hole 40a. In order to ensure the electrical connection effect between the conductive sheet 40 and the pin 70, the pin 70 may be interference-fitted with the mounting hole 40a of the conductive element.
[0064] Please see Figure 4 , Figure 5 In one embodiment of this utility model, pin 70 is soldered to circuit board 50.
[0065] This configuration, which connects pin 70 to circuit board 50 by soldering, can further improve the reliability of the connection between pin 70 and circuit board 50, thereby ensuring the electrical connection between pin 70 and circuit board 50 and preventing the pin 70 from becoming detached from circuit board 50 during use, which would affect the grounding effect.
[0066] Please see Figure 5 In one embodiment of this utility model, the circuit board 50 is connected to the stator mounting bracket 10 via a grounding connector 80.
[0067] With this configuration, while the circuit board 50 is mounted on the stator mounting bracket 10 using the grounding connector 80, the current of the circuit board 50 can also be introduced into the stator mounting bracket 10 through the grounding connector 80, so as to achieve the dual effect of connection and grounding.
[0068] In practical applications, the grounding connector 80 can be a grounding screw, a grounding clip, a grounding adhesive, etc.
[0069] This utility model also proposes a motor, which includes a grounding structure. The specific structure of the grounding structure is as described in the above embodiments. Since this motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The motor in this embodiment is a linear motor, especially a ring track linear motor.
[0070] This utility model also proposes a drive assembly, which includes a motor. The specific structure of the motor is as described in the above embodiments. Since this drive assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0071] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A grounding structure, characterized in that, include: Stator mounting bracket; A frame, wherein the frame is disposed on the stator mounting bracket; Stator core, the stator core being disposed on the frame; A conductive sheet, one end of which is electrically connected to the stator core; A circuit board, which is electrically connected to the end of the conductive sheet away from the stator core, and is disposed on the stator mounting bracket so that the circuit board is grounded through the stator mounting bracket.
2. The grounding structure as described in claim 1, characterized in that, One end of the conductive sheet is sandwiched between the frame and the stator core.
3. The grounding structure as described in claim 2, characterized in that, The frame includes an upper frame and a lower frame that are spliced together, and the stator core is sandwiched between the upper frame and the lower frame; One end of the conductive sheet is clamped between the stator core and the upper frame or the lower frame.
4. The grounding structure as described in claim 3, characterized in that, The upper skeleton and the lower skeleton are wound with a winding group, which is used to apply winding pressure to the upper skeleton and the lower skeleton.
5. The grounding structure as described in claim 2, characterized in that, The frame has a first sidewall, a second sidewall, and a third sidewall connected in sequence, and the conductive sheet includes: The first connecting piece is sandwiched between the frame and the stator core; The second connecting piece is connected to the side of the first connecting piece that is exposed outside the skeleton and abuts against the first sidewall; The third connecting piece is connected to the side of the second connecting piece away from the first connecting piece and abuts against the second sidewall; The fourth connecting piece is connected to the side of the third connecting piece away from the second connecting piece and abuts against the third sidewall. The fourth connecting piece is electrically connected to the circuit board.
6. The grounding structure as described in any one of claims 1 to 5, characterized in that, The grounding structure also includes pins, which are located on the frame, and the end of the conductive sheet away from the stator core is electrically connected to the circuit board through the pins.
7. The grounding structure as described in claim 6, characterized in that, The pin passes through the conductive sheet; And / or, the pins are soldered to the circuit board.
8. The grounding structure as described in any one of claims 1 to 5, characterized in that, The circuit board is connected to the stator mounting bracket via a grounding connector.
9. An electric motor, characterized in that, Includes the grounding structure as described in any one of claims 1 to 8.
10. A drive assembly, characterized in that, Includes the motor as described in claim 9.