Stator assembly for improving structure for mounting sensor

Abstract

The present invention relates to a stator assembly for improving a structure for mounting a sensor, comprising: a sensor unit comprising a housing body for mounting a sensor and a component at a predetermined position, and a cover for sealing the housing body; a bobbin in the center of which a central core, which is formed with a mounting part for coupling the sensor unit, is embedded; provided is a coil winding assembly which is formed by winding a coil on a bobbin, coupling a sensor unit to a seating portion formed on a central core of the coil winding assembly, and then integrally performing secondary molding, and which can prevent contamination, and has the advantages of convenience and reduced defects in assembly and manufacturing processes.

Description

Technical Field

[0001] The present invention relates to a stator assembly that forms magnetic force through electricity. More specifically, it relates to a stator assembly that forms a sensor unit from sensors and components that constitute a stator for providing power in industrial fields such as automobiles, thereby enabling the minimization of defects during the manufacturing process of the stator and improving the structure for installing the sensor. Background Art

[0002] Generally, a stator is a device for converting electrical energy into mechanical energy. It consists of a stator and a rotor. The stator is formed by winding a coil around a bobbin of a split core made of laminated thin iron sheets, and connecting multiple split cores with wound coils into a circular shape for assembly.

[0003] The above-mentioned stator has a conventional structure, and various shapes and styles of stators with the above basic structure are provided in the automotive industry and various industrial machinery.

[0004] In the above-mentioned stator, a center core for separating the N and S poles of magnetic force is formed in the center of a bobbin around which a coil is wound. On one side of the center core, there are sensors for sensing the up and down positions of a piston that moves through the magnetic force of the stator and components with various functions, and a stator assembly with a wound coil.

[0005] The manufacturing process of the above-mentioned conventional stator is as follows: After installing a sensor and components for sensing the up and down positions of a piston that moves through the magnetic force of the stator on the center core and one side of the center core respectively, the center core is inserted into the center of the bobbin. Thus, a stator bobbin with a center core and sensor components is manufactured. Then, after winding a coil around the stator bobbin, over-molding is performed to manufacture the stator.

[0006] When manufacturing a stator through the above manufacturing process, there is a disadvantage that it is not easy to detect defects in the sensor for sensing the up and down positions of the piston.

[0007] In particular, there are no components for protecting the sensor. Therefore, there is a disadvantage that the probability of defects occurring during the process of inserting the center core into the bobbin together with the center core, the process of winding a coil around the bobbin, and the over-molding process is relatively high. Moreover, there are many problems in terms of structure, such as reduced durability and foreign object blocking function.

[0008] [Prior Art Documents]

[0009]

Patent Document

[0010] Authorized Patent No. 10-1141964 (authorized on April 25, 2012)

[0011] Authorized Patent No. 10-1361391 (authorized on February 4, 2014) Summary of the Invention

[0012] Technical Problem to be Solved by the Invention

[0013] In order to solve the above problems, the object of the present invention is to form a sensor unit composed of a sensor for sensing the up and down position of a piston operating by magnetic force through a stator and components, thereby improving the durability of protecting the sensor, and satisfying the conditions for detecting foreign object blockage and defects.

[0014] Moreover, the object is to provide a high-quality stator assembly by minimizing defects during the process of winding a coil around a bobbin and manufacturing a stator by over-molding through embedding a center core and a sensor unit into the center of the bobbin.

[0015] Technical Solution for Solving the Problem

[0016] To solve the above technical problems, the present invention improves a stator assembly for installing a sensor, including: a sensor unit composed of a housing main body for arranging a sensor and components capable of controlling the stator function at a predetermined position and a lid for sealing the housing main body; a center core having a mounting portion for coupling the sensor unit; a coil winding assembly formed by winding a coil around a bobbin embedded in the center of the center core, and the sensor unit is coupled to the mounting portion formed on the center core constituting the coil winding assembly, and the present invention is formed by integrally performing over-molding in a state where the sensor unit is coupled to the mounting portion formed on the center core.

[0017] Effects of the Invention

[0018] According to the present invention, a sensor unit is composed of a sensor and components for controlling the stator function, thereby preventing contamination caused by foreign objects, and forming a structure coupled to the mounting portion of the center core formed in the center of the bobbin, so it has the advantage of easily detecting defects of components such as sensors.

[0019] In particular, it has the following advantages: After winding the coil around the bobbin with the central core embedded in the center of the bobbin, the sensor unit is assembled. Therefore, when the central core is embedded in the center of the bobbin, or during the process of forming the coil winding, breakage of components such as the sensor can be prevented, thereby reducing defective situations and providing high-quality components. Brief Description of the Drawings

[0020] Figure 1 A perspective view showing the overall configuration of the stator assembly of the present invention;

[0021] Figure 2 A perspective view showing the configuration of the sensor unit of the present invention;

[0022] Figure 3 A perspective view showing the configuration of the bobbin of the stator assembly of the present invention;

[0023] Figure 4 A perspective view showing the Figure 3 internal configuration of the present invention;

[0024] Figure 5 A plan view showing the internal configuration of the stator assembly of the present invention;

[0025] Figure 6 A partial cross-sectional view of the stator assembly of the present invention;

[0026] Figure 7 A perspective view showing the manufacturing steps of the stator assembly of the present invention.

[0027] Description of the Reference Numerals

[0028] 1: Sensor unit

[0029] 2: Housing main body

[0030] 3: Cover

[0031] 4: Sensor

[0032] 5: Component

[0033] 6: Support protrusion

[0034] 10: Central core

[0035] 11: Injection molding hole

[0036] 12: Groove

[0037] 15: Bobbin

[0038] 16: Coil winding assembly Detailed Description of the Invention

[0039] Hereinafter, a stator assembly that improves the structure for mounting a sensor according to the present invention will be described in detail. This description is based on embodiments for implementing the present invention. The technical idea of the present invention is not limited to the embodiments described in this specification and should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present invention.

[0040] Moreover, even if the effects of the configurations of the present invention are not explicitly described when explaining the embodiments of the present invention, the effects predictable through the corresponding configurations should be recognized.

[0041] Next, the configuration of a stator assembly that improves the structure for mounting a sensor according to the present invention will be described in detail with reference to the accompanying drawings.

[0042] The configuration of a stator assembly that improves the structure for mounting a sensor according to the present invention is composed of a sensor unit (Sensor unit) 1 formed by combining a housing main body 2 that mounts a sensor 4 and a component 5 at a predetermined position and a lid 3 that seals the housing main body 2. Moreover, support protrusion portions 6 for engaging with an accommodation portion 10-1 of a center core 10 are formed on both sides of the housing main body 2 that constitutes the sensor unit 1.

[0043] The center core 10 is formed with an accommodation portion 10-1 for engaging the sensor unit (Sensor unit) 1, and grooves 12 are formed at equal intervals in the injection molding hole 11 and the outer peripheral edge to allow the injection molding material to flow in during over-molding.

[0044] The center core (Center core) configured as described above is inserted into the center of a bobbin to manufacture a bobbin 15. Then, coils 13 are wound around both sides with the center core 10 of the bobbin 15 as a reference to form a coil winding assembly 16. Moreover, the support protrusion portions 6 formed on the housing main body 2 of the sensor unit (Sensor unit) 1 are assembled to the accommodation portion 10-1 of the center core 10 of the coil winding assembly 16 in an interference fit manner.

[0045] As described above, in a state where the sensor unit 1 is engaged with the accommodation portion 10-1 of the center core 10 of the coil winding assembly 16, over-molding is integrally performed on the whole to form the sensor unit 1 and the coil winding assembly 16 into one body, thereby constituting a stator assembly that improves the structure for mounting a sensor.

[0046] Reference numeral 50 in the drawings refers to a wire guiding groove, 51 refers to a wire terminal, and 52 refers to a lead wire.

[0047] The operation of the stator assembly of the present invention configured as described above to improve the structure for mounting a sensor will be described in detail below.

[0048] First, a sensor 4 for detecting the up and down movement distance of a plunger in the stator assembly and components 5 with various functions are installed at a predetermined position inside the housing main body 2, and a sensor unit 1 is formed by sealing with a lid 3. Therefore, during the storage, assembly, and transportation of the sensor unit 1, foreign matter can be prevented from entering and contaminating. Also, since the above-mentioned sensors and other components form a single sensor unit 1, it is convenient for handling and assembly, etc., and the malfunction of the sensor can be detected at any time.

[0049] Moreover, when the center core 10 is inserted into the center of the bobbin 15 through the injection molding holes 11 formed in the center core 10 and then secondary molded, the injection molding materials can be interconnected through the injection molding holes 11. Thus, the center core 10 and the bobbin 15 are firmly formed as a single body.

[0050] In particular, with the center core 10 inserted into the middle of the bobbin 15 as a reference, coil windings 13 are wound on both sides to form a coil winding assembly 16. Then, the sensor unit 1 is combined with the placement portion 10-1 of the center core 10 constituting the coil winding assembly 16. Therefore, during the process of winding the coil 13 on the bobbin 15, the sensor 4 and the components 5 with various functions can be prevented from being damaged.

[0051] Also, the support protrusion 6 formed on the housing main body 2 constituting the sensor unit 1 is in interference fit with the placement portion 10-1 of the center core 10. Therefore, during the process of manufacturing the coil winding assembly 16 and the process of secondary molding (Over-Molding) the coil winding assembly 16, the sensor unit 1 can be prevented from shaking and being displaced. Thus, the sensor unit 1 can accurately perform the sensor function without error at the correct position of the placement portion 10-1 formed on the center core.

[0052] The method for manufacturing the stator assembly of the above-described structure for improving the installation of a sensor will be described below.

[0053] It includes the step of manufacturing a sensor unit 1 composed of a housing main body 2 that places sensors and components for controlling the stator function at a predetermined position and has support protrusions formed on both sides, and a lid for sealing the housing main body.

[0054] Step of manufacturing a center core 10 which forms a placement portion 10-1 for coupling the sensor unit, and has grooves 12 formed at equal intervals in the injection molding hole 11 and the outer peripheral edge;

[0055] Step of manufacturing a bobbin 15 by inserting the center core 10 manufactured through the above step into the middle of the bobbin;

[0056] Step of manufacturing a coil winding assembly 16 of the wound coil by winding coils 13 on both sides with the center core 10 of the bobbin 15 manufactured through the above step as the center;

[0057] Step of coupling the sensor unit 1 to the placement portion 10-1 of the center core 10 inserted into the middle of the bobbin of the coil winding assembly 16; and placing the coil winding assembly 16 in a mold for secondary molding, thereby manufacturing a stator assembly that improves the structure for mounting the sensor.

Claims

1. A stator assembly with an improved structure for mounting a sensor, characterized in that: include: A central core body, which is formed with a placement portion for combining the sensor unit, and grooves are formed at equal intervals in the injection molding hole and the outer periphery so as to enter the injection molding during secondary molding; A coil winding assembly, which is formed by embedding the central core into the center of the bobbin to form a bobbin, and then winding the coil on both sides based on the central core embedded in the center of the bobbin; A sensor unit is installed in a placement portion of a central core formed in the center of the coil winding assembly to control a stator function, Furthermore, the sensor unit is integrally formed by secondary molding in a state where the sensor unit is coupled to a seating portion formed on a central core constituting the coil winding assembly.

2. The stator assembly with improved structure for mounting a sensor according to claim 1, characterized in that: The sensor unit is composed of a housing body in which the sensor and components are placed at predetermined positions, and a cover for sealing the housing body.

3. The stator assembly with improved structure for mounting a sensor according to claim 2, characterized in that: Support protrusions for coupling with the seating portion of the central core are formed on both sides of the housing body constituting the sensor unit.

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