Stator casing and stator assembly with same

Abstract

The utility model relates to the field of stator assemblies, in particular to a stator casing and a stator assembly with the stator casing, which comprise a casing body. The interior of the machine shell body is hollow to form a containing cavity. A positioning structure used for positioning is arranged in the machine shell body. According to the stator casing disclosed by the utility model, through the arrangement of the positioning structure, the stability and the accuracy of the assembling position of the magnetic pole in the stator casing can be ensured; meanwhile, according to the stator assembly disclosed by the utility model, the stator casing, the magnetic pole structure and the positioning bracket are combined for use, so that the structure of the stator assembly can be simplified, and the overall structure of the stator assembly is compact; and subsequent automatic assembly is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of stator assembly, specifically a stator housing and a stator assembly having the stator housing. Background Technology

[0002] Permanent magnet starters have also been widely used.

[0003] A car starter motor needs to convert electrical energy into mechanical energy, and a permanent magnet starter motor can be one of the primary choices for a starter motor.

[0004] Compared to traditional electric vehicle starting systems, permanent magnet starters have a simpler structure and are easier to maintain. They also offer advantages such as fast response, low energy consumption, long lifespan, small size, and low cost. The permanent magnet starter stator assembly is one of the key components of an automotive starter. It primarily provides the magnetic field and is not only a magnetic field component but also a critical structural component of the starter assembly. Therefore, the design of the starter assembly greatly influences product performance, cost, and reliability.

[0005] Traditional stator assemblies generally include a stator housing and a magnetic pole structure. When the traditional magnetic pole structure is arranged inside the stator housing, it is prone to rotation or movement within the housing.

[0006] Meanwhile, traditional stator housings lack a self-positioning structure, requiring the addition of an internal positioning structure during subsequent use to ensure the stability and accuracy of the magnetic pole structure installation within the stator housing. This results in increased assembly time for the magnetic pole structure within the stator housing during actual assembly, hindering the improvement of stator assembly efficiency.

[0007] Existing patent 201821594992.5 - A snap-fit ​​connection for an automotive starter stator housing with a top plate - does not explicitly disclose the technical content that solves the above-mentioned technical problem.

[0008] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing stator assembly. Utility Model Content

[0009] The purpose of this invention is to provide a stator housing that facilitates the installation of magnetic pole structures within the stator housing.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0011] A stator housing includes a housing body; the housing body has a hollow interior forming a placement cavity; the housing body is provided with a positioning structure for positioning.

[0012] The positioning structure includes a magnetic limit position mechanism; the magnetic limit position mechanism includes at least one limiting protrusion disposed on the inner wall of the housing body.

[0013] The positioning structure also includes a guide limiting mechanism, which includes at least one guide protrusion disposed on the housing body.

[0014] The housing body has a positioning notch at one end.

[0015] The housing body has a positioning groove at one end; the positioning notch and the positioning groove are distributed on opposite ends of the housing body.

[0016] A stator assembly includes a stator housing; a magnetic pole structure is provided inside the housing; the magnetic pole structure includes a magnetic pole body; one end of the magnetic pole body abuts against a limiting protrusion in a positioning structure.

[0017] The magnetic pole body is provided with a guiding mechanism, which includes at least one guiding groove disposed on the outer side of the magnetic pole body; the guiding groove is used in conjunction with the guiding protrusion in the positioning structure.

[0018] The stator assembly also includes a positioning bracket disposed within the housing body; the positioning bracket and the magnetic limit position mechanism within the housing body are located at opposite ends of the magnetic pole structure.

[0019] The positioning bracket includes a bracket body, on which a positioning mechanism is provided; the positioning mechanism includes at least one positioning protrusion disposed on the bracket body; the positioning protrusion in the positioning mechanism is inserted into a corresponding guide groove on the outer side surface of the magnetic pole body.

[0020] The positioning bracket is a plastic bracket; the bracket body is provided with a through hole.

[0021] The stator assembly also includes a drain valve disposed on the housing body.

[0022] The advantages of this utility model are:

[0023] This utility model discloses a stator housing and a stator assembly having the stator housing.

[0024] The stator housing disclosed in this utility model, through the setting of the positioning structure, can ensure the stability and accuracy of the assembly position of the magnetic poles within the stator housing.

[0025] Meanwhile, the stator assembly disclosed in this utility model simplifies the stator assembly structure by combining the stator housing, magnetic pole structure and positioning bracket, and the overall structure of the stator assembly is compact, which facilitates subsequent automated assembly. Attached Figure Description

[0026] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0027] Figure 1 This is a first-view structural schematic diagram of the stator housing in this utility model.

[0028] Figure 2 This is a structural schematic diagram of the stator housing from a second perspective in this utility model.

[0029] Figure 3 This is a first-view structural schematic diagram of the stator assembly in this utility model.

[0030] Figure 4 This is a structural schematic diagram of the stator assembly from a second perspective in this utility model.

[0031] Figure 5 This is a schematic diagram of the magnetic pole structure in this utility model.

[0032] Figure 6 This is a schematic diagram of the positioning bracket in this utility model.

[0033] The markings in the above figures are all:

[0034] 1. Stator mechanism, 2. Magnetic pole structure, 3. Positioning bracket, 4. Drain valve. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0036] A stator housing 1 includes a housing body 11; the housing body 11 is hollow to form a placement cavity 16; the housing body 11 is provided with a positioning structure for positioning; the stator housing 1 disclosed in this utility model can ensure the stability and accuracy of the assembly position of the magnetic poles in the stator housing 1 through the setting of the positioning structure.

[0037] The stator housing 1 disclosed in this utility model is mainly an external protective structure for the stator assembly. It mainly includes a housing body 11, which is mainly made of galvanized sheet. In this utility model, the housing body 11 is hollow inside to form a placement cavity 16. The placement cavity 16 facilitates the subsequent installation and arrangement of the magnetic pole structure 2 and the positioning bracket 3.

[0038] The housing body 11 described in this utility model is provided with a positioning structure for positioning; the positioning structure in this utility model is mainly used to control and limit the position of the magnetic poles, so as to ensure the accuracy and stability of the magnetic pole installation position.

[0039] Furthermore, the positioning structure described in this utility model includes a magnetic limit position mechanism; the magnetic limit position mechanism is mainly used to limit the position of one end of the magnetic pole structure 2, and the magnetic limit position mechanism described in this utility model includes at least one limiting protrusion 12 provided on the inner wall of the housing body 11; the limiting protrusion 12 is equivalent to forming a protrusion on the inner wall of the housing body 11, and the end of the magnetic pole structure 2 presses against the limiting protrusion 12, thereby limiting the placement position of the magnetic pole structure 2 inside the housing body 11.

[0040] In this utility model, the magnetic limit position mechanism is generally provided with multiple limit protrusions 12, which are arranged in a parallel ring at intervals on the inner wall of the housing body 11; generally, three, six or nine can be provided.

[0041] Furthermore, the positioning structure in this utility model also includes a guide limiting mechanism, which includes at least one guide protrusion 13 disposed inside the housing body 11. In this utility model, the essential function of the guide limiting mechanism is to provide guidance and limitation. In actual use, the guide protrusion 13 cooperates with the guide groove 21 on the outer side of the magnetic pole body 201. The guide protrusion 13 is equivalent to being inserted into the guide groove 21. Based on this arrangement, the guide protrusion 13 can not only ensure the linearity of the magnetic pole structure 2 when it is assembled inside the housing body 11, but also limit the circumferential movement of the magnetic pole structure 2, preventing the magnetic pole structure 2 from rotating inside the housing body 11.

[0042] In this utility model, the guide limiting mechanism is generally provided with multiple guide protrusions 13, each guide protrusion 13 is used in conjunction with a guide groove 21, and the guide protrusions 13 are distributed in a spaced ring on the inner wall of the housing body 11; at the same time, in order to avoid interference, the guide protrusions 13 are required to be staggered with the limiting protrusions 12 mentioned above to avoid installation interference between the two.

[0043] Furthermore, in this utility model, one end of the housing body 11 is provided with a positioning notch 15; the positioning notch 15 is used for the installation and positioning of the brush holder; at the same time, one end of the housing body 11 is provided with a positioning groove 14; the positioning notch 15 and the positioning groove 14 are distributed on opposite ends of the housing body 11; the positioning groove 14 also plays a limiting and positioning role, mainly used for the installation and positioning of the lower drive cover of the starter motor.

[0044] A stator assembly includes a stator housing 1; a magnetic pole structure 2 is provided inside the housing; the magnetic pole structure 2 includes a magnetic pole body 201; one end of the magnetic pole body 201 abuts against a limiting protrusion 12 in a positioning structure; the stator assembly also includes a positioning bracket 3 disposed inside the housing body 11; the positioning bracket 3 and the magnetic limit positioning mechanism inside the housing body 11 are located at opposite ends of the magnetic pole structure 2.

[0045] In this utility model, the magnetic limit position mechanism and the positioning bracket 3 are set inside the stator housing 1 and are located at both ends of the magnetic pole structure 2. Through the cooperation of the two, the positions of both ends of the magnetic pole structure 2 can be limited. At the same time, with the help of the guide limit mechanism, the rotation of the magnetic pole structure 2 inside the stator housing 1 can be avoided. Through the cooperation of various mechanisms, the stability and accurate arrangement of the magnetic pole structure 2 inside the stator housing 1 can be guaranteed.

[0046] In addition, the stator assembly disclosed in this utility model can simplify the stator assembly structure by combining the stator housing 1, the magnetic pole structure 2 and the positioning bracket 3, and the overall structure of the stator assembly is compact, which facilitates subsequent automated assembly.

[0047] Furthermore, the magnetic pole body 201 described in this utility model is provided with a guiding mechanism. The guiding mechanism is mainly used in conjunction with the guiding and limiting mechanism. The combination of the guiding mechanism and the guiding and limiting mechanism can better ensure the stability and accuracy of the magnetic pole body 201 in the stator housing 1.

[0048] In addition, the guiding mechanism described in this utility model includes at least one guiding groove 21 disposed on the outer side of the magnetic pole body 201; the guiding groove 21 is used in conjunction with the guiding protrusion 13 in the positioning structure; the guiding protrusion 13 is inserted into the guiding groove 21, thereby achieving mutual positioning; thus ensuring the linearity of the magnetic pole structure 2 running in the stator housing 1 during assembly, and at the same time, after assembly, the stator housing 1 can perform circumferential positioning of the magnetic pole structure 2 to prevent the magnetic pole structure 2 from rotating in the stator housing 1.

[0049] Furthermore, the positioning bracket 3 described in this utility model includes a bracket body 31, which is the main structure of the positioning bracket 3. The bracket body 31 is provided with a through hole 32. The through hole 32 can be used for the armature shaft to pass through. In addition to supporting and limiting, the bracket body 31 also plays a good role in isolation, which can isolate the stator cavity from the deceleration cavity and prevent grease from penetrating into the stator cavity and contaminating the stator.

[0050] In this invention, the support body 31 is provided with a positioning mechanism. The positioning mechanism plays a good calibrating and limiting role, and its purpose is to ensure the stability of the support body 31 when inserted into the magnetic pole structure 2. Specifically, in this invention, the positioning mechanism includes at least one positioning protrusion 33 provided on the support body 31. The positioning protrusion 33 in the positioning mechanism is inserted into the corresponding guide groove 21 on the outer side of the magnetic pole body 201. Based on this arrangement, the positioning mechanism disclosed in this invention is equivalent to being inserted into the end of the magnetic pole structure 2, which can prevent relative rotation between the positioning support 3 and the magnetic pole structure 2.

[0051] In addition, in this utility model, the positioning bracket 3 and the housing body 11 can be connected by an interference fit, or other connection methods can be used.

[0052] Furthermore, the positioning bracket 3 described in this utility model is a plastic bracket; the plastic positioning bracket 3 can have the above-mentioned functions while reducing its own weight. At the same time, the plastic bracket has better insulation and corrosion resistance, which helps to ensure the service life of the positioning bracket 3.

[0053] Furthermore, the stator assembly described in this utility model also includes a drain valve 4 disposed on the housing body 11; the drain valve 4 is a blind-path type drain valve 4; the drain valve 4 disclosed in this utility model can prevent foreign objects from entering the stator housing 1, and can also effectively drain water, dissipate heat and avoid negative pressure.

[0054] specific:

[0055] The stator assembly disclosed in this utility model mainly includes a stator housing 1, a magnetic pole structure 2, and a positioning bracket 3.

[0056] The stator housing 1 of this utility model is provided with a limiting protrusion 12 and a guide protrusion 13 inside.

[0057] The magnetic pole structure 2 disclosed in this utility model includes a magnetic pole body 201, which is a composite magnetic pole; a guide groove 21 is provided on the outer surface of the magnetic pole body 201.

[0058] The positioning bracket 3 includes a bracket body 31; the bracket body 31 is provided with a positioning protrusion 33.

[0059] The stator assembly disclosed in this utility model has a stator housing 1 made of galvanized sheet and a magnetic pole structure 2 that is an integral composite magnetic ring. During assembly, the magnetic pole structure 2 is inserted into the stator housing 1, and then the positioning bracket 3 is inserted into the stator housing 1. Through the cooperation of the positioning bracket 3 and the magnetic limit mechanism, the positions of the two ends of the magnetic pole structure 2 can be limited. Based on the above design, it can be seen that the magnetic pole structure 2 disclosed in this utility model has limit components at both ends, which can well ensure the stability and accuracy of the installation position of the magnetic pole structure 2 in the stator housing 1.

[0060] The combination of the stator housing 1, magnetic pole structure 2 and positioning bracket 3 makes the overall stator structure compact, has good manufacturability, is easy to automate, and effectively solves stator boring and vibration resistance.

[0061] In this invention, the guide groove 21 on the magnetic pole body 201 has multiple functions. In this invention, the guide groove 21 and the guide protrusion 13 cooperate with each other, thereby preventing the magnetic pole body 201 from rotating in the stator housing 1.

[0062] The guide groove 21 end cooperates with the positioning protrusion 33 on the bracket body 31 to ensure the stability of the connection between the positioning bracket 3 and the magnetic pole body 201.

[0063] In addition, the positioning bracket 3 disclosed in this utility model is a plastic bracket structure. The positioning bracket 3 can limit the position of one end of the magnetic pole body 201. At the same time, the bracket body 31 in the positioning bracket 3 disclosed in this utility model is essentially a plate structure with holes. This plate structure has the function of an oil baffle, which isolates the stator cavity and the deceleration cavity, effectively preventing grease from overflowing. It is also designed with blind channels to effectively prevent grease from penetrating into the stator cavity and contaminating the stator.

[0064] In summary:

[0065] It can be seen that the stator assembly disclosed in this utility model has a simple process, reliable assembly, precise positioning and error prevention, and is easy to automate.

[0066] The product has a reliable structure, effectively preventing common problems such as boring and avoiding issues like magnetic pole breakage during production. It boasts high material utilization, effectively mitigating various common failure modes, and its design fully complies with manufacturing standards, making it easy for mass production.

[0067] Obviously, the specific implementation of this utility model is not limited to the above-mentioned methods. Any non-substantial improvements made using the inventive concept and technical solution of this utility model are within the protection scope of this utility model.

Claims

1. A stator assembly characterized by, The stator assembly comprises a stator shell; the stator shell comprises a shell body; the shell body is internally hollow to form a placing cavity; the shell body is internally provided with a positioning structure; the positioning structure comprises a magnetic pole limiting mechanism; the magnetic pole limiting mechanism comprises at least one limiting protrusion arranged on the inner wall of the shell body; The shell is internally provided with a magnetic pole structure; the magnetic pole structure comprises a magnetic pole body; one end of the magnetic pole body is in abutment with the limiting protrusion in the positioning structure; The stator assembly further comprises a positioning support arranged in the shell body; the positioning support is at the two ends of the magnetic pole structure in the magnetic pole limiting mechanism in the shell body.

2. A stator assembly according to claim 1, wherein The positioning structure further comprises a guide limiting mechanism; the guide limiting mechanism comprises at least one guide protrusion arranged on the inner wall of the shell body.

3. A stator assembly according to claim 1, wherein One end of the shell body is provided with a positioning notch.

4. A stator assembly according to claim 3, wherein One end of the shell body is provided with a positioning groove; the positioning notch and the positioning groove are distributed on the opposite ends of the shell body.

5. A stator assembly according to claim 1, wherein The magnetic pole body is provided with a guide mechanism; the guide mechanism comprises at least one guide groove arranged on the outer side of the magnetic pole body; the guide groove is used in cooperation with the guide protrusion in the positioning structure.

6. A stator assembly as claimed in claim 1, wherein The positioning support comprises a support body; the support body is provided with a positioning mechanism; the positioning mechanism comprises at least one positioning protrusion arranged on the support body; the positioning protrusion in the positioning mechanism is inserted into the corresponding guide groove on the outer side of the magnetic pole body.

7. A stator assembly according to claim 6, wherein The positioning support is a plastic support; the support body is provided with a penetrating through hole.

8. A stator assembly according to claim 1, wherein The stator assembly further comprises a drain valve arranged on the shell body.

Images