Coil assembly structure for stator

Abstract

The utility model relates to magnetic induction coil assembly technical field, especially relates to a coil assembly structure for stator, coil assembly structure includes elastic mounting spare and expansion spare, elastic mounting spare can be worn in the inside of stator core, and it is formed with the multiple mounting protrusions that are arranged along the axial direction interval of elastic mounting spare and are annularly arranged along the outer periphery of elastic mounting spare on it, are used for matching with wire slot, and the placement area for placing signal wire is formed to the outer periphery side of mounting protrusion, the axial position of elastic mounting spare is equipped with expansion hole, and expansion hole extends to at least the radial inner side of mounting protrusion, expansion spare includes expansion column, and the outer diameter of expansion column is greater than the inner diameter of expansion hole, and expansion column can be inserted in expansion hole, so that elastic mounting spare occurs deformation to the radial outer side of itself, and makes mounting protrusion move to the radial outer side, so can promote the convenience and speed of signal wire assembly, guarantees the coil assembly effect simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of magnetic induction coil assembly technology, and in particular to a coil assembly structure for stator. Background Technology

[0002] Magnetic induction coils, as components that can change current through a magnetic field, are widely used in various devices. For example, rotary transformers use a combination of stator and rotor to transmit electrical signals to the rotor coils, causing the rotor to rotate and generate a magnetic field change. The electrical signal is then transmitted to the stator coils through the coupling of magnetic materials. Reducing the coupling gap between the stator and rotor (i.e., the gap between the stator and rotor) is one of the key factors in reducing signal loss. Currently, circumferential slots are created on the inner wall of the stator to wind the coils within these slots, further reducing the impact on the gap.

[0003] In the existing technology, the method of winding the coil involves manually threading the signal wire into the inside of the stator and then finding the position of the wire slot to wind it. However, since the internal wire slot cannot be seen during winding, the winding process is time-consuming and laborious, and the accuracy is poor, which affects the final winding effect of the coil and even affects the normal use of the magnetic induction coil. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of poor coil winding effect caused by manually winding the coil in the inner groove of the stator in the prior art, and to provide a coil assembly structure for the stator.

[0005] This utility model provides a coil assembly structure for a stator, which is used for the auxiliary assembly of signal lines and a stator core. Multiple annular grooves are formed on the inner ring surface of the stator core. The coil assembly structure includes an elastic mounting member and an expansion member. The elastic mounting member can be inserted through the inner side of the stator core. Multiple mounting protrusions are formed on the elastic mounting member, and these protrusions are spaced apart along the axial direction of the elastic mounting member and arranged annularly along the outer circumferential surface of the elastic mounting member to match the grooves. A placement area for placing signal lines is formed on the outer circumferential side of the mounting protrusions. An expansion hole is provided at the axial position of the elastic mounting member, and the expansion hole extends at least to the radially inner side of the mounting protrusion. The expansion member includes an expansion column, the outer diameter of which is larger than the inner diameter of the expansion hole. The expansion column can be inserted into the expansion hole to cause the elastic mounting member to deform radially outward and to cause the mounting protrusion to move radially outward.

[0006] The coil assembly structure provided by this utility model includes an elastic mounting member and an expansion member. The elastic mounting member can be inserted into the inner side of the stator core. Multiple mounting protrusions are formed on the elastic mounting member at intervals along its axial direction, and each mounting protrusion is arranged in a ring around the outer periphery of the elastic mounting member. A placement area for placing signal lines is formed on its outer periphery to match the wire groove. Correspondingly, an expansion hole extending at least radially outward from the axis of the elastic mounting member is provided. The expansion member includes an expansion column with an outer diameter larger than the inner diameter of the expansion hole. This allows the expansion column to deform the elastic mounting member radially outward after being inserted into the expansion hole, causing the mounting protrusion to move radially outward. Thus, the mounting protrusion, along with the signal line wound on it, can move towards the wire groove on the inner annular surface of the stator core, so that the signal line is located in the wire groove. This achieves the installation of the signal line. Compared to the existing method of manually winding the signal line inside the stator core, this improves the convenience and speed of signal line assembly while ensuring the effectiveness of coil assembly.

[0007] Preferably, a placement groove is provided on the outer peripheral surface of the mounting protrusion, and the placement groove extends along the extending direction of the mounting protrusion to form the placement area for placing the signal line. This arrangement allows the placement groove to provide a better fixing effect for the signal line.

[0008] Preferably, the elastic mounting component includes a mounting base and a deformable column, with one end of the deformable column connected to one end of the mounting base. The deformable column has a through groove extending radially from its outer surface to communicate with the expansion hole, and axially from its other end toward the mounting base. Multiple through grooves are arranged at circumferential intervals along the deformable column. This not only makes the deformable column easier to deform but also makes it easier for it to recover after deformation.

[0009] Preferably, one end of the deformable column is connected to the axial position of one end of the mounting base, so that one end of the mounting base forms a first positioning step surrounding the outer periphery of the deformable column; the first positioning step is used to abut against one end of the stator core, and when the first positioning step abuts against one end of the stator core, the mounting protrusion and the groove are arranged radially opposite to each other along the mounting member.

[0010] This configuration allows the first positioning step to abut against the end face of the stator core, thereby fixing the position of the mounting component relative to the stator core. This ensures that when the deformable column expands and deforms, the mounting protrusion can move accurately toward the inside of the slot.

[0011] Preferably, the mounting base has clearance holes or clearance slots for the signal wire to pass through. This design ensures that the removal of the mounting component after the signal wire is successfully fixed in the slot will not affect the signal wire's placement, and also facilitates the connection of the signal wire's end to subsequent circuitry.

[0012] Preferably, each of the mounting protrusions is provided with an adapter groove, which extends along the axial direction of the mounting member to both sides of the mounting protrusion. This arrangement facilitates the winding of a signal line from one mounting protrusion to the next.

[0013] Preferably, the expansion member further includes an expansion base, and one end of the expansion column is connected to the axial position of one end of the expansion base, so that one end of the expansion base forms a second positioning step surrounding the outer periphery of the expansion column, and the second positioning step is used to abut against the other end of the stator core.

[0014] By forming a second positioning step at one end of the expansion base, it can abut against the other end of the stator core after the expansion column is inserted into the expansion hole, thereby enabling the expansion column to be fully inserted into the expansion hole, ensuring sufficient support range and support effect for the deformed column.

[0015] Preferably, with the expansion column fully inserted into the expansion hole, the end of the expansion column extends to the opposite side of the mounting protrusion facing away from the expansion base.

[0016] Preferably, an abutment section is formed on the outer surface of the expansion base. This abutment section extends from one end edge of the expansion column in a direction away from the expansion column and is inclined radially outward towards the expansion base. This arrangement ensures that during the process of supporting the deformable column by the expansion member, no...

[0017] Preferably, the radial outer peripheral surface of the elastic mounting member is coated with a Teflon material; or, the elastic mounting member is made of Teflon material. This design creates a non-stick surface on the elastic mounting member, facilitating its removal after the adhesive has cured, without removing the cured adhesive and ensuring effective signal cable fixation.

[0018] Preferably, the difference between the outer diameter of the expansion column and the inner diameter of the expansion hole is 0.3mm-0.4mm, so as to ensure sufficient interference between the expansion column and the expansion hole without affecting the normal use of the elastic mounting component.

[0019] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the stator structure in the prior art.

[0021] Figure 2 This is a schematic diagram of the coil assembly structure and the signal line assembly structure provided in the embodiment of this utility model.

[0022] Figure 3 A schematic diagram of the elastic mounting component of the coil assembly structure provided in this embodiment of the utility model.

[0023] Figure 4 for Figure 3 A partial structural diagram of part A in the middle.

[0024] Figure 5 A schematic diagram of the expansion component of the coil assembly structure provided in this embodiment of the utility model.

[0025] Figure 6 A schematic diagram of the elastic mounting component for the stator and the coil assembly structure provided in this embodiment of the utility model.

[0026] Figure 7 A cross-sectional schematic diagram of the elastic mounting component of the stator and the coil assembly structure provided in this embodiment of the utility model.

[0027] Figure 8 This is a cross-sectional schematic diagram of the stator and the coil assembly structure provided in this embodiment of the present invention with the expansion column fully inserted into the expansion hole.

[0028] Figure 9 This is a flowchart illustrating the coil assembly method for the stator provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Stator; 11. Signal line; 12. Stator core; 13. Cable tray;

[0031] 2. Coil assembly structure; 21. Elastic mounting component; 211. Mounting protrusion; 212. Expansion hole; 213. Placement groove; 214. Mounting base; 215. Deformable column; 216. Through groove; 217. First positioning step; 218. Clearance hole; 219. Adapter groove; 22. Expansion component; 221. Expansion column; 222. Expansion base; 223. Second positioning step; 224. Clearance section. Detailed Implementation

[0032] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0033] Magnetic induction coils, as components that can change current through a magnetic field, are widely used in various devices. For example, in a rotary transformer, as an electrical signal transmission device, an electrical signal can be transmitted to the rotor coils through a combination of stator and rotor, causing the rotor to rotate and generate a change in magnetic field. Then, through the coupling of magnetic materials, a processed electrical signal is generated in the stator coils.

[0034] Specifically, please see Figure 1 As shown, the rotary transformer has a signal input terminal and a magnetic induction coil. The signal input terminal is an RF coaxial connector. Other signal generating devices can be plugged into the RF coaxial connector of the rotary transformer to input signals. The received signal is filtered by a choke coil and then transmitted further. The magnetic induction coil has a stator 1 and a rotor. The processed electrical signal is transmitted to the rotor coil, causing the rotor to rotate and generate a change in the magnetic field. Then, the electrical signal is transmitted to the stator 1 coil through the coupling of the magnetic material. The stator 1 mainly includes a signal line 11 and a stator core 12. The signal line 11 is wound on the stator core 12 to form a stator coil for connection with subsequent circuits. The stator core 12 is made of ferrite.

[0035] Reducing the coupling gap between stator 1 and rotor (i.e., the gap between stator 1 and rotor) is one of the key factors in reducing signal loss. Currently, a circumferential groove 13 is opened on the inner wall of stator 1 to wind the coil in the groove, so as to further reduce the occupation of the gap.

[0036] In the existing technology, the method of winding the coil is to manually insert the signal wire 11 into the inside of the stator 1 and then locate the position of the wire groove 13 for winding. However, since the internal wire groove 13 cannot be seen during winding, the winding process is time-consuming and laborious, and the accuracy is poor, which affects the final winding effect of the coil and even affects the normal use of the magnetic induction coil.

[0037] In view of the above situation, this utility model embodiment provides a coil assembly structure 2 for stator 1, so as to realize the assembly of the inner coil of stator 1 through the coil assembly structure 2, thereby enabling the coil to be wound quickly and accurately and the stator 1 structure to be manufactured, ensuring the assembly effect of stator 1.

[0038] The above is the core idea of ​​this utility model. The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] like Figures 2-8As shown, this embodiment of the present invention provides a coil assembly structure 2, which includes an elastic mounting member 21 and an expansion member 22. The elastic mounting member 21 has multiple mounting protrusions 211 arranged at intervals along the axial direction of the elastic mounting member 21 and arranged in a ring along the outer circumferential surface of the elastic mounting member 21. An expansion hole 212 is provided at the axial position of the elastic mounting member 21, extending at least to the radially inner side of the mounting protrusions 211. The expansion member 22 includes an expansion column 221, the outer diameter of which is larger than the inner diameter of the expansion hole 212. The expansion column 221 can be inserted into the expansion hole 212, causing the elastic mounting member 21 to deform radially outward and causing the mounting protrusions 211 to move radially outward.

[0040] The coil assembly structure 2 is used for auxiliary assembly of the signal line 11 and the stator core 12. Specifically, multiple annular grooves 13 are formed on the inner ring surface of the stator core 12 to place the signal line 11 to form the coil structure of the stator 1. The elastic mounting member 21 of the coil assembly structure 2 can be inserted through the inner side of the stator core 12. That is, when assembling the coil of the stator 1, the elastic mounting member 21 is inserted through the inner side of the stator core 12 to assemble the signal line 11. After the coil assembly is completed, the elastic mounting member 21 can be removed.

[0041] The mounting protrusions 211 on the elastic mounting member 21 are arranged axially at intervals on the outer peripheral surface of the elastic mounting member 21 and are circumferentially annular to match the wire grooves 13 on the inner annular surface of the stator core 12. Correspondingly, the outer peripheral side of the mounting protrusions 211 forms a placement area for placing the signal lines 11. In specific implementation, after the expansion column 221 of the expansion member 22 is inserted into the expansion hole 212, since the outer diameter of the expansion column 221 is larger than the inner diameter of the expansion hole 212, the elastic mounting member 21 will be expanded from the inside of the expansion hole 212, causing it to expand and deform in the radially outward direction. Furthermore, since the mounting protrusions 211 are provided on the outer peripheral surface of the elastic mounting member 21, the expansion and deformation of the elastic mounting member 21 in the radially outward direction means that the mounting protrusions 211 on the outer peripheral surface of the elastic mounting member 21 will also move in the radially outward direction.

[0042] Correspondingly, when the elastic mounting member 21 is inserted into the stator core 12 at a position where the mounting protrusion 211 matches the radial direction of the wire groove 13 along the stator core 12 and the elastic mounting member 21, the expansion column 221 is inserted. The mounting protrusion 211 then moves toward the wire groove 13, so that at least a portion of the mounting protrusion 211 is located inside the wire groove 13. Since the outer periphery of the mounting protrusion 211 forms a placement area for placing the signal line 11, the mounting protrusion 211, during movement, will drive the signal line 11 located in its placement area into the wire groove 13, so that the signal line 11 is facing the bottom of the wire groove 13, thereby finally realizing the placement operation of the signal line 11 in the wire groove 13. Furthermore, when the expansion column 221 is removed, the elastic mounting member 21 can recover its deformation due to its own elastic properties, thereby facilitating the removal of the elastic mounting member 21 from the inside of the stator core 12.

[0043] It should be noted that since glue is needed to fix the signal line 11 after it is placed in the wire groove 13, glue is also used to fix the signal line 11 simultaneously when using the coil assembly structure 2 provided in this embodiment of the present invention. Specifically, glue can be applied to the wire groove 13 before the elastic mounting member 21 is moved into the inside of the stator core 12, so as to fix the signal line 11 after it is placed into the wire groove 13 through the coil assembly structure 2.

[0044] In summary, the coil assembly structure 2 for the stator provided in this embodiment of the present invention includes an elastic mounting member 21 and an expansion member 22. The elastic mounting member 21 can be inserted into the inner side of the stator core 12. The elastic mounting member 21 has multiple mounting protrusions 211 spaced apart along its axial direction, and each mounting protrusion 211 is arranged in a ring along the outer periphery of the elastic mounting member 21. Its outer periphery forms a placement area for placing the signal line 11 to match the wire groove 13. Correspondingly, an expansion hole 212 extending at least radially outward from the mounting protrusion 211 is provided at the axis of the elastic mounting member 21. The expansion member 22 includes an expansion column 221, the outer diameter of which is larger than the expansion hole 221. The inner diameter of the hole 212 is adjusted so that after the expansion column 221 is inserted into the expansion hole 212, it will expand the elastic mounting member 21 towards its own radial outward, causing it to deform, and the mounting protrusion 211 will move radially outward. In this way, the mounting protrusion 211 can move along with the signal line 11 wound on it towards the wire groove 13 on the inner annular surface of the stator core 12, so that the signal line 11 is located in the wire groove 13. This realizes the installation of the signal line 11. Compared with the existing method of manually winding the signal line 11 inside the stator core 12, the coil assembly result provided by this utility model embodiment can improve the convenience and speed of assembling the signal line 11, not only ensuring the effect of coil assembly, but also further improving the assembly speed.

[0045] This embodiment uses the application of the coil assembly structure 2 in a rotary transformer as an example. Of course, in other embodiments, the coil assembly structure can also be applied to other stator 1 and rotor combination devices. In specific applications, the size and specifications of the coil assembly structure 2 can be adapted to the applicable object.

[0046] like Figure 9 As shown, in addition to the above-mentioned coil assembly structure 2, this embodiment of the invention also provides a coil assembly method for the stator, which uses the above-mentioned new full assembly structure to assist in the assembly of the coils of the stator 1. The coil assembly method specifically includes the following steps:

[0047] Step 101: Fill the wire grooves inside the stator core with glue;

[0048] Step 102: Wrap the signal wire around the mounting protrusion in sequence along the arrangement direction of the mounting protrusion, so that the signal wire is placed in a spiral shape in the placement area of ​​the elastic mounting component;

[0049] Step 103: Insert the elastic mounting piece with the signal line wound around it into the inside of the stator core, and make the mounting protrusion and the wire groove correspond to each other;

[0050] Step 104: Insert the expansion pin into the expansion hole of the elastic mounting component, so that the expansion pin pushes the elastic mounting component to expand and deform outward until the mounting protrusion moves into the groove.

[0051] Step 105: Remove the expansion column after the glue has solidified.

[0052] Specifically, when filling with adhesive, the adhesive should completely cover any position on the inner wire groove 13 of the stator core 1212 to ensure sufficient fixation of the coil and avoid any unstable installation due to insecure fixation, which could affect the performance of the magnetic induction coil. Furthermore, the amount of adhesive filled should be just enough to bond the signal wire 11 to the wire groove 13, to avoid excessive adhesive overflowing outside the wire groove 13 and affecting the maintenance of the gap between the stator 1 and the rotor. For example, a fast-drying adhesive, such as the 14250 5-minute epoxy adhesive from Dextromethorphan, Inc., can be used.

[0053] Furthermore, after the mounting protrusion 211 and signal line 11 are moved into the cable tray 13, the expansion column 221 and the elastic mounting member 21 can be kept stationary for a period of time to ensure complete curing of the adhesive. For example, the structure can be kept stationary for 3 to 5 minutes.

[0054] Furthermore, to facilitate the removal of the elastic mounting member 21 from the inside of the stator 1 after the signal line 11 is fixed in the wire groove 13 with adhesive, in some embodiments, the elastic mounting member 21 can be made of Teflon material. This design allows the elastic mounting member 21 to utilize the properties of Teflon to form a non-stick surface, thus facilitating its removal after the adhesive has cured, while also preventing the removal of the cured adhesive, ensuring the effective fixation of the signal line 11.

[0055] It should be noted that since the mounting protrusion 211 is formed on the elastic mounting member 21, it can be understood that the mounting protrusion 211 is part of the elastic mounting member 21. The elastic mounting member 21 is made of Teflon material, which means that the mounting protrusion 211 is also made of Teflon material.

[0056] Correspondingly, in other embodiments, the coating may be provided only on the radial outer peripheral surface of the elastic mounting member 21, and the coating may be made of Teflon material, which can also achieve the above-mentioned non-stick effect.

[0057] Based on the above, when setting the outer diameter of the elastic mounting member 21, the outer diameter of the elastic mounting member 21 can be slightly smaller than the inner diameter of the stator core 12, so that the elastic mounting member 21 can be smoothly inserted into the inner side of the stator core 12. It should be noted that the outer diameter of the elastic mounting member 21 mentioned here refers to the outer diameter dimension corresponding to the position of the mounting protrusion 211 of the elastic mounting member 21. Correspondingly, in order to ensure that the expansion column 221 can expand the elastic mounting member 21 without causing the elastic mounting member 21 to deform excessively, thus squeezing the signal line 11 or causing permanent deformation that makes it difficult to remove, the interference between the expansion column 221 and the expansion hole 212 can be further set.

[0058] In one specific implementation, the difference between the outer diameter of the expansion column 221 and the inner diameter of the expansion hole 212 can be 0.3mm-0.4mm, so as to ensure sufficient interference between the expansion column 221 and the expansion hole 212 without affecting the normal use of the elastic mounting component 21.

[0059] Furthermore, along the axial direction of the resilient mounting member 21, the width of the mounting protrusion 211 can be no greater than the width of the groove 13 along the axial direction of the stator core 12, for example, it can be slightly smaller than the width of the groove 13, so that the mounting protrusion 211 can be more easily inserted into the groove 13. In other possible embodiments, the mounting protrusion 211 can also be configured to be wider on the side closer to the axis of the resilient mounting member 21 and narrower on the side farther from the axis of the resilient mounting member 21, so as to make it easier for the mounting protrusion 211 to be inserted into the groove 13.

[0060] The length of the mounting protrusion 211, that is, the radial extension length of the mounting protrusion 211 along the elastic mounting member 21, can be set to be less than the depth of the wire groove 13 on the stator core 12, so that when the signal line 11 is placed into the wire groove 13 through the mounting protrusion 211, the wire groove 13 is guaranteed to have reserved space for the placement of the signal line 11.

[0061] like Figure 4 As shown, in some embodiments, a placement groove 213 is provided on the outer peripheral surface of the mounting protrusion 211. The placement groove 213 extends along the extending direction of the mounting protrusion 211 to form a placement area for placing the signal line 11. This arrangement allows the placement groove 213 to provide a better fixing effect for the signal line 11.

[0062] In a specific implementation, the placement groove 213 is formed by the outer peripheral surface of the mounting protrusion 211 being recessed radially inward towards the mounting protrusion 211. Its width can be set to be the same as or slightly larger than the outer diameter of the signal line 11, and its depth can be set to be smaller than the outer diameter of the signal line 11, so that part of the signal line 11 can protrude out of the placement groove 213, thereby facilitating contact with the adhesive in the groove 13 and ensuring successful bonding of the signal line 11.

[0063] like Figure 3 As shown, in some embodiments, the elastic mounting member 21 specifically includes a mounting base 214 and a deformable column 215, wherein one end of the deformable column 215 is connected to one end of the mounting base 214. Further, a through groove 216 is provided on the deformable column 215. Along the radial direction of the deformable column 215, the through groove 216 extends from the outer side of the deformable column 215 to communicate with the expansion hole 212. Along the axial direction of the deformable column 215, the through groove 216 extends from the other end of the deformable column 215 toward the mounting base 214.

[0064] The through groove 216 extends along the outer side of the deformable column 215 to communicate with the expansion hole 212. That is, the through groove 216 penetrates the deformable column 215 radially, thereby dividing the deformable column 215 into multiple parts. This allows the multiple parts of the deformable column 215 to deform in different directions after the expansion column 221 is inserted into the deformable column 215. This not only makes the deformable column 215 easier to deform, but also makes it easier for the deformable column 215 to recover after deformation.

[0065] Furthermore, there are multiple through slots 216, which are spaced apart along the circumference of the deformable column 215. For example, the multiple through slots 216 are evenly distributed along the circumference of the deformable column 215 to further ensure the uniformity of deformation along the circumference.

[0066] In practice, the expansion column 221 can be inserted into the deformable column 215 from the other end of the deformable column 215 to expand and deform the deformable column 215. It should be noted that when the deformable column 215 is divided into multiple parts by the through groove 216, the mounting protrusions 211 provided on the deformable column 215 are also cut off at the position of the through groove 216, but the overall annular extension shape of the mounting protrusions 211 is not affected.

[0067] Based on the above, regarding the length of the expansion column 221, in some embodiments, its end can extend to the other side of the mounting protrusion 211 opposite to the expansion base 222 while it is fully inserted into the expansion hole 212. See [link to relevant documentation] for details. Figure 8 As shown. This configuration ensures that all locations of the mounting protrusion 211 have the same amount of deformation, thereby guaranteeing a uniform and consistent fixing effect for the signal lines 11 throughout the wire groove 13.

[0068] For the length of the through groove 216, for example, it can be made to be at least not less than the axial length of the deformable column 215 so that the deformable column 215 can have a large amount of deformability.

[0069] like Figure 3 As shown, in some embodiments, one end of the deformable column 215 is connected to the axial position of one end of the mounting base 214, so that one end of the mounting base 214 forms a first positioning step 217 surrounding the outer periphery of the deformable column 215.

[0070] Specifically, a first positioning step 217 is formed at one end of the mounting base 214, that is, the outer diameter of the deformable column 215 is smaller than the outer diameter of the mounting base 214, so that an annular surface surrounding the outer periphery of the mounting column can be formed at the end face of the mounting base 214.

[0071] Furthermore, the first positioning step 217 is used to abut against one end of the stator core 12, and with the first positioning step 217 abutting against one end of the stator core 12, the mounting protrusion 211 and the wire groove 13 are arranged radially opposite to each other along the mounting member. This arrangement allows the first positioning step 217 to abut against the end face of the stator core 12, thereby fixing the position of the mounting member relative to the stator core 12. This ensures that when the deformable column 215 expands and deforms, the mounting protrusion 211 can accurately move towards the interior of the wire groove 13.

[0072] Since the mounting protrusion 211 is formed on the deformable post 215 of the mounting member, and when installing the signal line 11, it is necessary not only for the signal line 11 to be able to wrap around the stator core 12, but also for the end of the signal line 11 to extend outside the stator core 12 to connect with subsequent circuits. Therefore, in one possible implementation, the mounting base 214 can be provided with a clearance hole 218 or clearance groove for the signal line 11 to pass through.

[0073] For details, please refer to Figure 3 As shown, this embodiment uses the provision of a clearance hole 218 as an example for explanation. Specifically, the clearance hole 218 is provided through the mounting base 214 along the axial direction of the mounting base 214, and the clearance hole 218 is located at the end face of the first positioning step 217. When the signal line 11 is placed in the placement groove 213 on the mounting protrusion 211, one end of the signal line 11 can be passed through the clearance hole 218 first, and then the signal line 11 can be wound. Furthermore, after the signal line 11 is wound, the two ends of the signal line 11 can be pulled tight so that the signal line 11 can be tightly attached to the placement groove 213.

[0074] After the signal line 11 is successfully fixed in the slot 13, the mounting protrusion 211 separates from the slot 13 and the signal line 11 through the recovery deformation of the deformation post 215. At this time, when the mounting part is pulled outward, since the part of the signal line 11 that passes through the clearance hole 218 also extends along the axial direction of the mounting part, the process of pulling out the mounting part will not affect the signal line 11. After the mounting part is completely pulled out, the part of the signal line 11 that originally passed through the clearance hole 218 can be folded back so that it can be axially bonded to the axial groove on the inner side of the stator core 12.

[0075] Correspondingly, such as Figure 5 As shown, in some embodiments, the expansion member 22 further includes an expansion base 222, one end of the expansion column 221 is connected to the axial position of one end of the expansion base 222, so that one end of the expansion base 222 forms a second positioning step 223 around the outer periphery of the expansion column 221, the second positioning step 223 is used to abut against the other end of the stator core 12.

[0076] By forming a second positioning step 223 at one end of the expansion base 222, the expansion column 221 can abut against the other end of the stator core 12 after being inserted into the expansion hole 212, thereby enabling the expansion column 221 to be fully inserted into the expansion hole 212, so as to ensure that the deformation column 215 is provided with sufficient support range and support effect.

[0077] Similar to the clearance hole 218 on the mounting base 214, such as Figure 5As shown, for example, a clearance section may also be formed on the outer surface of the expansion base 222. The clearance section extends from one end edge of the expansion post 221 in a direction away from the expansion post 221 and is inclined radially outward toward the expansion base 222. This configuration can create clearance space for the signal line 11 that is left outside during the process of the expansion post 221 being inserted into the expansion hole 212, avoiding affecting the exposed part of the signal line 11, so as to ensure that the end of the signal line 11 can be connected to the circuit that needs to be connected.

[0078] Since the signal line 11 needs to be wound onto the next mounting protrusion 211 after completing one loop of signal line 11 on a mounting protrusion 211, in some embodiments, each mounting protrusion 211 is provided with a transition groove 219, which extends along the axial direction of the mounting member to both sides of the mounting protrusion 211.

[0079] In one possible implementation, all the transition slots 219 on the mounting protrusions 211 can be arranged along the same axial direction. In other possible implementations, all the transition slots 219 can be arranged sequentially at intervals along the circumference of the mounting protrusions 211. Furthermore, in other embodiments, the through slots 216 on the deformable column 215 can be directly used as transition slots 219 to reduce the number of slots on the stator core 12.

[0080] Furthermore, it should be noted that this embodiment describes the specific configuration of the coil assembly structure 2 when the groove 13 on the stator core 12 is annular. In other embodiments, when the groove 13 on the stator core 12 has other shapes, the extension shape of the mounting protrusion 211 on the coil assembly structure 2 can be adaptively adjusted accordingly. For example, if the groove 13 on the stator core 12 is a single spiral extension, the mounting protrusion 211 on the elastic mounting member 21 also has a spiral structure matching the groove 13 along the outer circumferential surface of the elastic mounting member 21. Therefore, any configuration in which the elastic mounting member 21 has mounting protrusions 211 for matching the groove 13 falls within the protection scope of the coil assembly structure 2 provided by this utility model.

[0081] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A coil assembly structure for a stator, characterized in that, For auxiliary assembly of signal lines and stator core, the inner ring surface of the stator core has multiple annular grooves, and the coil assembly structure includes: A flexible mounting member is used to pass through the inner side of the stator core. The flexible mounting member has a plurality of mounting protrusions. The plurality of mounting protrusions are arranged at intervals along the axial direction of the flexible mounting member and are arranged in a ring along the outer peripheral surface of the flexible mounting member to match the wire groove. The outer peripheral side of the mounting protrusion forms a placement area for placing signal lines. An expansion hole is provided at the axial position of the flexible mounting member. The expansion hole extends at least to the radial inner side of the mounting protrusion. An expansion member includes an expansion column, the outer diameter of which is larger than the inner diameter of the expansion hole. The expansion column can be inserted into the expansion hole to cause the elastic mounting member to deform radially outward and to cause the mounting protrusion to move radially outward.

2. The coil assembly structure as described in claim 1, characterized in that, A placement groove is provided on the outer peripheral surface of the mounting protrusion, and the placement groove extends along the extension direction of the mounting protrusion to form the placement area for placing signal lines.

3. The coil assembly structure as described in claim 1, characterized in that, The elastic mounting component includes a mounting base and a deformable column, with one end of the deformable column connected to one end of the mounting base; The deformable column is provided with a through groove. Along the radial direction of the deformable column, the through groove extends from the outer side of the deformable column to communicate with the expansion hole. Along the axial direction of the deformable column, the through groove extends from the other end of the deformable column toward the mounting base. The number of through slots is multiple, and the multiple through slots are arranged at intervals along the circumference of the deformable column.

4. The coil assembly structure as described in claim 3, characterized in that, One end of the deformable column is connected to the axial position of one end of the mounting base, so that one end of the mounting base forms a first positioning step surrounding the outer periphery of the deformable column; The first positioning step is used to abut against one end of the stator core, and when the first positioning step abuts against one end of the stator core, the mounting protrusion and the groove are arranged radially opposite to each other along the mounting member.

5. The coil assembly structure as described in claim 4, characterized in that, The mounting base is provided with clearance holes or clearance slots for the signal lines to pass through.

6. The coil assembly structure as described in claim 1, characterized in that, Each of the mounting protrusions is provided with a transition groove, which extends along the axial direction of the mounting component to both sides of the mounting protrusion.

7. The coil assembly structure as described in any one of claims 1-6, characterized in that, The expansion member further includes an expansion base, and one end of the expansion column is connected to the axial position of one end of the expansion base, so that one end of the expansion base forms a second positioning step surrounding the outer periphery of the expansion column. The second positioning step is used to abut against the other end of the stator core.

8. The coil assembly structure as described in claim 7, characterized in that, With the expansion column fully inserted into the expansion hole, the end of the expansion column extends to the other side of the mounting protrusion opposite to the expansion base. And / or, an avoidance section is formed on the outer surface of the expansion base, the avoidance section extending from one end edge of the expansion column in a direction away from the expansion column, and inclined radially outward toward the expansion base.

9. The coil assembly structure as described in any one of claims 1-6, characterized in that, The radial outer circumferential surface of the elastic mounting member is coated with a Teflon material; or, the elastic mounting member is made of Teflon material.

10. The coil assembly structure as described in any one of claims 1-6, characterized in that, The difference between the outer diameter of the expansion column and the inner diameter of the expansion hole is 0.3mm-0.4mm.

Images