KR200359311Y1 - Magnetic sensor - Google Patents

Abstract

The present invention relates to a magnetic sensor, and to a magnetic sensor that can reduce cost, improve productivity, and improve the working environment of the worker by minimizing the assembly labor and assembly time.

To this end, the present invention, a connector unit body is formed on one side is connected to the outside, the other side is a connector integral body which is injection-molded to be provided with a substrate accommodating portion in a shape that is part of the circumferential surface; A plurality of connection terminal portions disposed in the connector portion so as to be connected to the outside, a plurality of coupling terminal portions projecting along the vertical direction with respect to the plate surface of the board receiving portion, and exposed to the outside; A lead frame configured to include a connection terminal unit which is integrally formed by connecting a terminal unit and integrally installed in the connector integrated body; A magnet fixing part integrally injection-molded with the connector integrated body to protrude to one end of the connector integrated body; A portion of a circumferential surface is cut to form a substrate seating portion, a groove is formed to be recessed inwardly from the substrate seating portion, the magnet fixing portion is coupled to the groove, and the magnet is integral with the connector body; A plurality of receiving holes formed through the coupling terminal portion so as to be movable along the axial direction of the magnet and electrically connected to a position corresponding to the coupling terminal portion, and being slidably coupled on the substrate seating portion It provides a magnetic sensor comprising a; circuit board assembly.

Description

Magnetic sensor {MAGNETIC SENSOR}

The present invention relates to a magnetic sensor, and more particularly to a magnetic sensor for ignition control to control the ignition timing of the engine.

In general, the magnetic sensor is a type of sensor invented to detect the movement of an object through which a magnetic field is transmitted within a sensing area set close to each other. The magnetic sensor has a magnetic field in a functional relationship with the magnetic sensing element according to the magnetic flux density of the magnetic field and the strength and shape of the magnetic field. Differences occur in the detection distance, detection angle, sensitivity, etc., and this difference causes a change in detection characteristics not only by the influence of the individual characteristics of the magnetic sensing element and the permanent magnet, but also depending on the mutual position of the two components.

On the other hand, the magnetic sensor as described above is used in the ignition control to control the ignition timing of the engine mounted on the engine bar, the ignition control magnetic sensor detects the target of the gear type (tooth) is the face of the sensor The magnetic field change occurs when passing through the face and the slot, and the signal is transferred by converting it into an electrical signal.

1 is a view illustrating an assembly form of a magnetic sensor including a conventional magnetic sensing device, a magnet, and a printed circuit board.

2 is a view showing the structure of each component of the conventional magnetic sensor, Figure 3 is a view showing a state in which each component of FIG.

As shown, in the conventional ignition timing control magnetic sensor, a magnetic sensing element (Hall IC, MR IC) 11 is integrally assembled to the support 12, and the magnetic sensing element assembly 10 assembled as described above is The magnet 13, which is integrally assembled to the magnet 13, and the magnetic sensing element assembly 10 is integrally assembled as described above, has a circuit element 15 such as a capacitor and a resistor. After being assembled to the connector integrated body 16 together with the attached printed circuit board (PCB) 14, the plastic housing 17 is inserted into the structure.

Here, reference numeral 17a denotes a bush, and reference numeral 18 denotes an O-ring.

That is, in manufacturing a conventional ignition timing control magnetic sensor, the magnetic sensing element assembly 10 in which a magnetic sensing element 11 such as a Hall IC is integrally assembled with the support 12 is mounted on the magnet 13. After positioning the magnetic sensing element assembly 10 in the direction of N pole or S pole in the center axis of the magnet 13 as indicated by the arrow 19 of FIG. The position of the magnetic sensing element assembly 10 is fixed using an adhesive.

The assembled magnet assembly 9 includes a printed circuit board (PCB) 14 having a circuit element 15 such as a capacitor or a resistor attached to a surface mount device (SMD). In this case, one end of the printed circuit board 14 is connected to the lead (not shown) of the magnetic sensing element 11 assembled to the magnet 13 by soldering, and the other end is connected to the connector body. (16) is connected to the terminal (16a) by soldering.

As described above, after the magnet including the magnetic sensing element assembly 10 is assembled to the connector integrated body 16 together with the printed circuit board (PCB) 14, the connector integrated body 16 is provided with a plastic housing 17. After inserting and bonding the epoxy (epoxy) by injection / curing, or spin welding (spin welding) or heat welding method, such as the O-ring 18 is assembled to produce a finished product.

However, the conventional ignition timing control magnetic sensor as described above requires a magnetic sensing element support 12, which is a separate component, to support the magnetic sensing element 11, and also has a magnetic sensing element assembly on the magnet 13. After moving (10) to set the sensing position, it had to be fixed through a bonding process using an adhesive, which increases the number of assembly time and assembly time, there is a problem that the cost is increased and productivity is lowered.

In addition, the bonding process for fixing the magnetic sensing device assembly 10 has been a factor that hinders the working environment, such as adversely affecting the health of the worker.

Therefore, the present invention has been devised to solve the above problems, by minimizing the assembly labor and assembly time can reduce the cost, improve productivity, and provide a magnetic sensor that can improve the working environment of the operator. Its purpose is to.

1 is a view showing an assembly form of a magnetic sensor including a conventional magnetic sensing element, a magnet and a printed circuit board.

Figure 2 is a view showing the structure of each component of the conventional magnetic sensor.

3 is a view illustrating a state in which each component of FIG. 2 is coupled;

Figure 4 is a view showing the assembly structure of the magnetic sensor according to the present invention.

5 is a view showing a state in which each component of FIG. 4 is coupled.

Figure 6 is a magnetic sensor according to the present invention, showing the assembly structure with the housing.

FIG. 7 is a view illustrating a state in which each component of FIG. 6 is coupled;

8 is a magnetic sensor according to the present invention, illustrating a coupling structure of a magnet and a magnet fixing part.

9 is a magnetic sensor according to the present invention, showing another embodiment of a coupling structure of the magnet and the magnet fixing portion.

10a to 10b schematically show a manufacturing process of the magnetic sensor according to the present invention.

<Description of the symbols for the main parts of the drawings>

20: lead frame 20a: coupling terminal portion

20b: connection terminal part 20c: connection terminal part

21: integrated connector body 21a: the board receiving portion

21b: connector portion 21c: magnet fixing portion

21d: Fixed rib 21e: Guide rail

22: magnet 22a: substrate mounting portion

22b: Groove 22c: Rail Groove

23: printed circuit board assembly 23a: magnetic sensing element

23b: circuit element 23c: receiving hole

24: housing 25: O-ring

The present invention for achieving the above object, the connector unit is formed on one side is connected to the outside, the connector integral body which is injection-molded to be provided with a substrate accommodating part in the shape of the periphery of the peripheral surface; A plurality of connection terminal portions disposed in the connector portion so as to be connected to the outside, a plurality of coupling terminal portions projecting along the vertical direction with respect to the plate surface of the board receiving portion, and exposed to the outside; A lead frame configured to include a connection terminal unit which is integrally formed by connecting a terminal unit and integrally installed in the connector integrated body; A magnet fixing part integrally injection-molded with the connector integrated body to protrude to one end of the connector integrated body; A portion of a circumferential surface is cut to form a substrate seating portion, a groove is formed to be recessed inwardly from the substrate seating portion, the magnet fixing portion is coupled to the groove, and the magnet is integral with the connector body; A plurality of receiving holes formed through the coupling terminal portion so as to be movable along the axial direction of the magnet and electrically connected to a position corresponding to the coupling terminal portion, and being slidably coupled on the substrate seating portion Circuit board assembly; characterized in that comprises a.

In addition, the magnet fixing portion is formed in a width larger than the width of the groove is characterized in that the press-fit fixed to the groove.

In addition, it characterized in that it further comprises a fixing rib protruding integrally formed on the side of the magnet fixing portion in order to fix the coupling state of the magnet.

In addition, the fixing rib is plastically deformed along the width direction of the magnet fixing portion when the magnet is coupled, characterized in that to fix the magnet.

In addition, the fixing rib is formed long along the longitudinal direction of the magnet fixing portion, characterized in that a plurality of spaced apart at a predetermined interval is provided.

In addition, the fixing rib is characterized in that formed entirely on the side of the magnet fixing portion in the form of embossing.

In addition, it is characterized in that it further comprises a guide means for guiding the combination of the magnet fixing portion and the magnet and prevents the separation of the magnet.

The guide means may include a guide rail protruding from one of a side of the magnet fixing part and a side wall of the groove, and a rail groove recessed in the other so that the guide rail can be slidably coupled thereto. Characterized in that.

In addition, at least one of the coupling terminal portion protrudes through the magnet fixing portion, and is characterized in that it is exposed to the outside.

In addition, the printed circuit board assembly is characterized in that the slide is moved and fixed to the coupling terminal portion after the position setting.

In addition, the printed circuit board assembly is characterized in that it comprises a magnetic sensing element and a circuit element.

The circuit device may be at least one of a capacitor, a resistor, and a surge protector.

In addition, it is characterized in that it further comprises a housing coupled to surround the connector integrated body and forms an outer shape.

In addition, after the coupling of the housing is characterized in that it further comprises an O-ring integrally coupled to the circumferential surface.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

4 is a view showing the assembly structure of the magnetic sensor according to the present invention, 5 is a view showing a state in which each component of FIG.

In addition, Figure 6 is a magnetic sensor according to the present invention, a view showing the assembly structure with the housing, Figure 7 is a view showing a state in which each component of Figure 6 combined.

In addition, Figure 8 is a magnetic sensor according to the present invention, a view showing a coupling structure of the magnet and the magnet fixing portion, Figure 9 is a magnetic sensor according to the present invention, another embodiment of the coupling structure of the magnet and the magnet fixing portion Figure is a diagram.

On the other hand, Figure 10a to 10b is a view schematically showing a manufacturing process of the magnetic sensor according to the present invention.

As shown, the magnetic sensor according to the present invention, the connector portion 21b is connected to the outside is formed on one side, the injection molding to be provided with the substrate accommodating portion (21a) in a shape in which a portion of the peripheral surface is cut off Together with the connector integrated body 21, the lead frame 20 integrally installed inside the connector integrated body 21, and the connector integrated body 21 to protrude to one end of the connector integrated body 21. The magnet fixing part 21c integrally injection-molded and a part of the circumferential surface thereof are cut out to form a substrate seating part 22a, and a groove 22b is formed to be recessed inwardly from the substrate seating part 22a. The magnet 22 which is coupled through the magnet fixing part 21c to be integral with the connector integrated body 21, and the printed circuit board assembly 23 which is slidably coupled to the substrate seating part 22a. artillery To consist.

The connector-integrated main body 21 is provided with a connector portion 21b connected to the outside at one side thereof, and injection molded to have the substrate accommodating portion 21a in a shape in which a part of the circumferential surface thereof is cut off, and the inside thereof. The lead frame 20 is integrally installed in the insert method.

That is, the lead frame 20 protrudes along a direction perpendicular to the plurality of connection terminal portions 20b disposed on the connector portion 21b and the plate surface of the substrate accommodating portion 21a so as to be connected to the outside. And a plurality of coupling terminal portions 20a exposed to the outside, and connection terminal portions 20c which are integrally formed by connecting the connection terminal portions 20b and the coupling terminal portions 20a to form an integrated connector. It is integrally installed inside the main body 21.

In addition, the connector integrated body 21 is provided with a magnet fixing part 21c having a predetermined width so that the magnet 22 to be described later is coupled, and the magnet fixing part 21c is the board receiving part 21a. It is integrally injection molded together with the connector integrated body 21 to protrude to the end of the connector integrated body 21 in proximity to the ().

The magnet 22 has a rod-shaped portion having a predetermined length, and a portion of an outer diameter circumferential surface thereof is cut to form a substrate seating portion 22a, and a groove 22b is formed to be recessed inward along a radial direction from the substrate seating portion. The magnet 22 is integrally coupled to the connector integrated body 21 by the magnet fixing portion 21c being coupled through the groove 22b.

At this time, the magnet fixing part 21c is provided with a fixing rib 21d to fix the state in which the magnet 22 is coupled, which will be described below.

The fixing rib 21d protrudes integrally to the side of the magnet fixing portion 21c to fix the coupled state of the magnet 22 coupled to the connector integrated body 21 through the magnet fixing portion 21c. When the magnet 22 is coupled, plastic deformation is performed along the width direction of the magnet fixing part 21c, and the coupling state of the magnet 22 can be fixed.

In addition, the fixing ribs 21d may be formed to extend in the longitudinal direction of the magnet fixing part 21c, and a plurality of fixing ribs 21d may be provided to be spaced apart at regular intervals, and may have a triangular cross section or a circular cross section.

In addition, the fixed rib 21d may be formed in a shape having various cross sections such as a rectangular cross section besides a triangular cross section or a circular cross section, and as shown in FIG. 9, the fixed rib 21d is embossed. It can be formed entirely on the side of the magnet fixing portion (21c) in the form.

Therefore, the magnet 22 may be fixed to the connector-integrated main body 21 in such a way that the magnet 22 is press-fitted through the fixing rib 21d of the magnet fixing part 21c.

In addition, the groove width of the magnet fixing portion 21c is not required to form the fixing rib 21d so as to fix the coupling state of the magnet 22 coupled through the magnet fixing portion 21c as described above. After forming to have a width larger than the width of (22b), of course, it can be fixed by pressing.

Meanwhile, the guide means is provided to guide the coupling between the magnet 22 and the magnet fixing part 21c as described above, and to prevent the magnet 22 from being separated after the magnet 22 is coupled. same.

That is, the guide means includes a guide rail 21e protruding from one of the side surfaces of the magnet fixing part 21c and the side wall surface of the groove 22b, and the guide rail 21e is slidably coupled thereto. It is configured to include a rail groove (22c) formed to be recessed in the other one.

Therefore, the magnet 22 is guided through the guide means and can be stably coupled to the magnet fixing portion 21c, and after being coupled, it can be prevented from being separated through the guide means.

On the other hand, the printed circuit board assembly 23 is coupled to the magnet 22 integrally coupled to the connector integrated body 21 as described above, as described below.

The printed circuit board assembly 23 is integrally configured to include a magnetic sensing element 23a and a circuit element 23b, and the circuit element 23b includes at least one of a capacitor, a resistor, and a surge protector. It is configured, and is integrally coupled to the magnet 22 through the substrate mounting portion 22a.

In addition, the printed circuit board assembly 23 has a plurality of receiving holes so that the coupling terminal portion 20a of the lead frame 20 can be moved along the axial direction of the magnet 22 and electrically connected thereto. 23c is formed through the bar, whereby the printed circuit board assembly 23 slides along the axial direction of the magnet 22 in a state of being seated on the substrate seating portion 22a and is positioned relative to the magnet 22. By adjusting, the optimum sensing position is set.

After the printed circuit board assembly 23 is moved and the optimal sensing position is set as described above, the printed circuit board assembly 23 is soldered by soldering the coupling protrusion and the printed circuit board assembly 23 disposed in the accommodation hole 23c. Can be fixed integrally to the connector integrated body 21.

On the other hand, at least one of the coupling terminal portion 20a protrudes through the magnet fixing portion 21c and is formed to be exposed to the outside. At this time, the printed circuit board assembly 23 protrudes through the magnet fixing portion 21c. The receiving hole 23c is formed to penetrate at a position corresponding thereto so that the coupled terminal portion 20a can be movably accommodated, such a structure is such that the printed circuit board assembly 23 is more stably provided with a connector body. 21).

In addition, after the magnet 22 and the printed circuit board assembly 23 are integrally coupled to the connector integrated body 21 as described above, the connector integrated body 21 has a housing 24 made of plastic in the connector integrated body 21. The inner surface of the housing 24 may be inserted and combined to form an outer shape, and the epoxy may be injected / cured, or bonded through spin welding or thermal welding. By assembling the O-ring 25 integrally to produce a finished product.

Hereinafter, a manufacturing process of the magnetic sensor according to the present invention will be described with reference to FIGS. 10A to 10B.

As shown, the manufacturing process of the magnetic sensor according to the present invention, first, the connector portion 21b is connected to the outside on one side, the other side is provided with a substrate accommodating portion 21a in a shape that is cut off a portion of the circumference. Injection molding so as to, but the inside of the connecting terminal portion 20b disposed in the connector portion 21b and the coupling terminal portion protruding along the vertical direction with respect to the plate surface of the substrate receiving portion 21a (exposed to the outside) 20a, and the lead frame 20 including the connection terminal portion 20c which is integrally formed by connecting the connection terminal portion 20b and the coupling terminal portion 20a are integrally installed, and at one end thereof. The connector integrated body 21 is formed such that the magnet fixing portion 21c having a predetermined width protrudes.

Thereafter, the magnet 22 is provided to include the substrate seating portion 22a so that the printed circuit board assembly 23 can be seated and the groove 22b recessed inwardly from the substrate seating portion 22a. And the magnet 22 is integrally coupled to the connector integrated body 21 by coupling the magnet fixing portion 21c to the groove 22b.

The connector integrated body 21 is formed as described above, the magnet 22 is coupled, and the integrated printed circuit board assembly 23 is assembled including the magnetic sensing element 23a and the circuit element 23b. .

Next, the printed circuit board assembly 23 accommodates the coupling terminal portion 20a and is electrically connected to and coupled to the magnet 22 to be seated on the substrate seating portion 22a.

Finally, the manufacturing of the magnetic sensor is completed by coupling the housing 24 to surround the connector integrated body 21.

Meanwhile, in the step of assembling the printed circuit board assembly 23 including the magnetic sensing element 23a and the circuit element 23b as described above, the coupling terminal portion 20a is connected to the printed circuit board assembly 23. A receiving hole 23c that can be accommodated is formed in a hole.

In addition, as described above, the printed circuit board assembly 23 is coupled to the magnet 22 to receive the coupling terminal portion 20a and to be electrically connected to and seated on the substrate seating portion 22a. In FIG. 3, as the printed circuit board assembly 23 is moved on the magnet 22, the position of the magnet 22 and the printed circuit board assembly 23 is adjusted and an optimal sensing position is set.

In the above described a preferred embodiment of the present invention by way of example, the scope of the present invention is not limited to this specific embodiment, it can be carried out by appropriately changing within the scope described in the utility model claims. .

As seen above, according to the magnetic sensor according to the present invention, there is an effect that can reduce the cost, improve productivity by minimizing the assembly labor and assembly time.

In addition, the present invention has the effect of improving the working environment of the operator by excluding the bonding process of the conventional manufacturing process of the magnetic sensor.

Claims (17)

A connector integral body which is formed on one side of the connector to be connected to the outside and is injection molded so that the board receiving part is provided in a shape in which a portion of the peripheral surface is cut off; A plurality of connection terminal portions disposed in the connector portion so as to be connected to the outside, a plurality of coupling terminal portions projecting along the vertical direction with respect to the plate surface of the board receiving portion, and exposed to the outside; A lead frame configured to include a connection terminal unit which is integrally formed by connecting a terminal unit and integrally installed in the connector integrated body; A magnet fixing part integrally injection-molded with the connector integrated body to protrude to one end of the connector integrated body; A portion of a circumferential surface is cut to form a substrate seating portion, a groove is formed to be recessed inwardly from the substrate seating portion, the magnet fixing portion is coupled to the groove, and the magnet is integral with the connector body; A plurality of receiving holes formed through the coupling terminal portion so as to be movable along the axial direction of the magnet and electrically connected to a position corresponding to the coupling terminal portion, and being slidably coupled on the substrate seating portion And a circuit board assembly. The method of claim 1, The magnetic fixing unit is formed in a width larger than the width of the groove magnetic sensor, characterized in that the press-fit fixed to the groove. The method of claim 1, Magnetic sensor characterized in that it further comprises a fixing rib protruding integrally formed on the side of the magnet fixing portion to fix the coupled state of the magnet. The method of claim 3, wherein The fixing ribs are plastically deformed along the width direction of the magnet fixing part when the magnets are coupled to each other, thereby fixing the magnets. The method of claim 4, wherein The fixing rib is formed in the longitudinal direction of the magnet fixing portion, a magnetic sensor, characterized in that provided with a plurality of spaced apart at a predetermined interval. The method of claim 4, wherein The fixed ribs are magnetic sensors, characterized in that formed entirely on the side of the magnet fixing portion in the form of embossing. The method according to any one of claims 1 to 3, Magnetic sensor characterized in that it further comprises a guide means for guiding the combination of the magnet fixing portion and the magnet and prevents the separation of the magnet. The method of claim 7, wherein The guide means includes a guide rail protruding from any one of the side of the magnet fixing portion and the side wall surface of the groove, and a rail groove recessed to the other so that the guide rail can be slidably coupled to the guide rail. Magnetic sensor characterized by the above-mentioned. The method of claim 1, At least one of the coupling terminal portion protrudes through the magnet fixing portion, characterized in that the magnetic sensor is exposed to the outside. The method of claim 1, And the printed circuit board assembly is slidably moved and soldered to the coupling terminal part after positioning. The method according to claim 1 or 10, The printed circuit board assembly may include a magnetic sensing device and a circuit device. The method of claim 11, The circuit element is at least one of a capacitor, a resistor, a surge protector. The method of claim 1, Magnetic sensor, characterized in that further comprises a housing that is coupled to surround the connector integrated body. The method of claim 13, Magnetic sensor characterized in that it further comprises an O-ring integrally coupled to the circumferential surface after the coupling of the housing. delete delete delete