KR20110129724A - Fixing device for inductor - Google Patents

Abstract

PURPOSE: An inductor fixing apparatus is provided to offer a strong tolerance by combining a fixing unit in which a fixing hole is formed to a case and to prevent the damage of the case due to an outer shock by including a reinforcement member in a connecting site of the case and the fixing unit. CONSTITUTION: A case(20) is composed so that a core is accepted. The case is fixed to a bounding target. A fixing hole(31) is composed so that a separate fastening means is inserted into a fixing unit. The fixing hole is formed by being penetrated into the fixing unit. The case comprises an upper case in which one side is opened and a lower case(22) which fixes the core in the inner side of the upper case by closing the one side of the upper case which is opened. A protrusion is projected in order to support the lower case by being contacted to the contacting surface of the bounding target.

Description

Inductor Fixture {FIXING DEVICE FOR INDUCTOR}

The present invention is an inductor for preventing the malfunction or damage caused by external force such as vibration of the vehicle itself or the road surface of the product, such as the inverter, HDC, charger, etc., which are power control units for electric vehicles, or inductors used in these kinds of products. It relates to a fixing device.

The inductor consists of a coil with an inductance wound around the core, which is resistant to alternating current and is called inductive reactance. Induction action between coils is used as a principle, and cores are classified into co-core coils, magnetic core coils, stratified core cores, ferrites, etc. and are classified into tuning coils, choke coils, oscillating coils, and transformers according to their use.

In general, the installation structure of an inductor consists of an inductor core, an inductor case housing the inductor core, a coil winding the inductor case, and a PCB. In the conventional inductor installation method, the inductor core is placed in the inductor case, the outer surface of the inductor case is wound with a coil, the end of the coil penetrates through a hole formed in the bottom surface of the inductor case, and soldered to the bottom surface of the PCB. To fix it. That is, the PCB and the inductor are fixed by simply soldering the coil through the hole in the bottom surface of the inductor case. There is no additional fixing method.

Therefore, when the inductor is vibrated, all stresses are soldered by the fatigue strength, and when a crack or breakage occurs in the solder, problems such as disconnection of the electrical connection occur. The disconnection of the electrical connection means that the product is in a state of normal operation, which is a very serious situation.

Recently, the development has been accelerated by the use of inverters, HDCs, and chargers for electric vehicles including fuel cell vehicles and hybrid vehicles, but it is one of the biggest technical difficulties in using these products for electric vehicles. Is about seismic design.

The present invention is to improve the above problems with the prior art of soldering the inductor directly to the coil itself to the substrate to change the conventional fixing method, in addition to the addition of a separate configuration for fixing the inductor, such as vibration It is an object of the present invention to provide an inductor holding device that has resistance to external forces and rigidity.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

The inductor fixing device of the present invention is an inductor fixing device for fixing a core that is fixed to the coupling object, a case in which the core is accommodated, a fixing portion formed in the case so that the case is fixed to the coupling object, and the high A separate fastening means is inserted into the government and includes a fixing hole formed through the fixing part so that the fixing part is fastened to the coupling object.

In addition, the inductor fixing apparatus of the present invention has a space inside to accommodate the core, one side is open and the upper case made of a hollow shape, and closes the open one side of the upper case of the upper case Including a lower case for fixing the core therein, two fixing parts are formed, each fixing part is located on the outer surface opposite to the upper case with respect to the central axis of the upper case, the lower case is And a plurality of protrusions protruding downward to contact the contact surface of the coupling object to support the lower case.

In addition, the inductor fixing device of the present invention, the lower case includes a protrusion formed in the height direction on the outer surface, the upper case includes a groove formed to correspond to the protrusion in the height direction on the inner surface, the lower When the case closes the upper case, the protrusion is inserted into the groove so that the lower case is fixed to the upper case.

In addition, the inductor fixing device of the present invention is a case in which the case, the wide width direction is installed perpendicular to the contact surface of the coupling object, the fixing portion is a vertically long plate-like, and includes a fixing hole formed at each end one by one One side of the fixing part is connected to an outer side surface of the case in a direction of coupling to the coupling object.

In addition, the inductor fixing device of the present invention further comprises a boss for supporting the fixing portion and the other end of the coupling surface in the spaced space between the contact portion and the contact surface of the coupling object.

In addition, the inductor fixing device of the present invention further includes a reinforcing member having one side coupled to the fixing portion and the other side coupled to an outer surface of the case to support the case.

In addition, in the inductor fixing device of the present invention, the reinforcing member has one side of the reinforcing member which is coupled with the fixing part extends beyond the position of the fixing hole in the direction of the end of the fixing part from the coupling portion of the fixing part and the case, It is installed at the coupling part.

The inductor fixing device according to the present invention couples the fixing part having the fixing hole to the case, and inserts a separate fastening means into the fixing hole and couples it with the contact surface of the coupling object so that the inductor has strong resistance and rigidity against external force such as vibration. There is an advantage to have.

In addition, the inductor fixing device according to the present invention has almost the same resistance and stiffness to external forces as vibration as compared to the case of four fixing parts with only two fixing parts due to the supporting effect of a plurality of protrusions protruding downward of the lower case. Similar characteristics are shown.

In addition, the inductor fixing device according to the present invention has the advantage that the inductor can be installed in a narrow horizontal space because the inductor can be fixed vertically.

In addition, the inductor fixing device according to the present invention further includes a reinforcing member at a coupling portion of the case and the fixing part, thereby preventing damage to the case itself due to external force such as vibration.

1 is a perspective view showing a first embodiment of an inductor fixing device according to the present invention.
2 is a perspective view from above of a second embodiment of an inductor fixing device according to the present invention;
Figure 3 is a perspective view from below of a second embodiment of an inductor fixing device according to the invention.
Figure 4 is a side view showing a second embodiment of the inductor fixing device according to the present invention.
5 is a perspective view showing a third embodiment of the inductor fixing device according to the present invention.
6 is a use state diagram showing a third embodiment of the inductor fixing device according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

The inductor fixing device of the present invention is an inductor fixing device for fixing a core that is fixed to the coupling object, a case in which the core is accommodated, a fixing portion formed in the case so that the case is fixed to the coupling object, and the high A separate fastening means is inserted into the government and includes a fixing hole formed through the fixing part so that the fixing part is fastened to the coupling object. The case is fixed by inserting the fastening means into the fixing hole and fastening with the coupling object so that the inductor has resistance to vibration and rigidity.

1 is a perspective view showing a first embodiment of an inductor fixing device according to the present invention.

The inductor fixing device according to the present invention is an inductor fixing device for fixing a core fixed to a coupling object. The case 20 has a space therein so as to accommodate the core and is open at one surface thereof and has a hollow shape. And a lower case 22 for closing the open side of the case 21 and the upper case 21 to fix the core to the inside of the upper case 21, wherein the upper case 21 is a coupling object. It includes a fixing portion 30 is formed to protrude in the circumferential direction so as to be fixed to the fixed portion 30, the fixing portion 30 includes a fixing hole 31 is formed to penetrate to be coupled to the coupling object is inserted into a separate fastening means. do. By inserting the fastening means into the fixing hole 31 and fastening with the coupling object, the upper case 21 is fixed to have resistance and rigidity to vibration, so that the coupling object to which the inductor is attached is affected by vibration. In this case, there is an effect of preventing malfunction or damage.

In the present invention, the inductor is not only a general inductor as a broad inductor, but also includes a magnetic, transformer, etc., and the coupling object is a component to which the inductor of the wide meaning is attached and used, an inverter which is a power control unit for a PCB or an electric vehicle, Products such as HDC, chargers or the like can be a variety of devices.

The core may be a solenoid type core, an EI or EE type core, a toroidal type core, or the like according to the shape thereof. In the first embodiment, a large inductance is obtained compared to the size and the radiation noise is small. Toroidal cores are used. The upper case 21 and the lower case 22 may have various shapes according to the shape of the core. In the first embodiment, since the toroidal core is used, the shape of the upper case 21 may be different. In addition, the cross section is formed in a cylindrical shape having a donut shape, and the shape of the lower case 22 is also formed in a plate shape having a donut shape in cross section.

The fixing part 30 may be formed in various forms such as protruding or recessed in the upper case 21 in accordance with the coupling form and the number of coupling with the coupling object. In addition, a fixing hole 31 is formed in the fixing part 30, and a separate fastening means is inserted into the fixing hole 31 to be fastened to the coupling object, such that the upper case 21 is connected to the coupling object. Combined and fixed. Of course, the fastening means includes a screw, rivets and the like. In the first embodiment, the fixing part 30 is coupled to the flat contact surface of the coupling object and the coupling number is four. Specifically, the fixing portion 30 protrudes in the outer circumferential direction on the outer surface of the upper case 21 and at a predetermined interval such that the lower surface of the fixing portion 30 is parallel to the lower surface of the lower case 22. A total of four are formed. Accordingly, the fixing hole 31 formed in the fixing part 30 corresponds to the coupling position of the coupling object. Therefore, by inserting the fastening means into the fixing hole 31 and fastening to the coupling position of the coupling object, the lower surface of the lower case 22 and the fixing part 30 are in contact with the flat contact surface of the coupling object to support each other. As a result, the inductor has resistance and rigidity against external force such as vibration.

Meanwhile, the process of fixing the inductor to the coupling object will be described below. The upper case 21 is formed in a cylindrical shape having a cross section of a donut shape, the inside of which is empty, and one surface of the upper case 21 is open and the other surface is closed. The core is accommodated in an empty interior of the upper case 21, and the lower case 22 is closed to fix an open surface of the upper case 21 to fix the core, and the upper case in a coupled state. Coils are wound around the open inner and outer diameters of the 21 and the lower case 22, and the fastening means is inserted into the fixing hole 31 to fasten the upper case 21 to the coupling object. Bond to the object.

Figure 2 is a perspective view from above showing a second embodiment of the inductor fixing device according to the present invention, Figure 3 is a perspective view from below showing a second embodiment of the present invention, Figure 4 is a second embodiment of the present invention. It is a side view which shows the example.

In the second embodiment, unlike the first embodiment, two fixing parts 30 are formed, and the fixing parts 30 are reduced from four to two, but protrude downward from the lower case 22. And a plurality of protrusions 40 are formed to contact the contact surface of the coupling object to support the lower case 22. There is almost no difference in terms of the effect from the case where the fixing portion 30 is four by the supporting effect of the protrusion 40 on the contact surface of the coupling object. The second embodiment will be described in detail below.

The fixing part 30 is formed to be symmetrical to each other and protrude in the outer circumferential direction on the outer surface with respect to the central axis of the upper case 21. If the two fixing parts 30 are formed to be biased to one side of the outer surface of the upper case 21, the external force due to the vibration is not evenly transmitted to the left and right so that the inductor is affected by the vibration and causes malfunction or damage. It is easy to be.

In addition, four protrusions 40 are formed in the lower case 22 so as to protrude downward, and the protrusions 40 may cause the inductor to vibrate due to a supporting effect on the contact surface of the coupling object of the protrusions 40. The lower case 22 is positioned at an appropriate interval so as to be less affected by external force. In the second embodiment, four protrusions 40 protrude downward from the lower case 22 so as to be positioned at 0, 3, 6, and 9 o'clock, respectively, based on one of the fixing parts 40. Is formed.

When two screws of the fastening means are respectively inserted into the fixing holes 31 and tightened to be coupled to the coupling object, the protrusions 40 positioned at 3 and 9 of the protrusions 40 are the fixing portions 30. Since the force is applied to the left and right sides of the contact surface of the coupling object based on the center line connecting the upper case 21 has a resistance and rigidity against external forces such as vibration. That is, compared to the structure of fastening four screws even if only two screws are fastened, the resistance and stiffness to external forces such as vibration of the inductor show almost similar characteristics.

In addition, the method of coupling the upper case 21 and the lower case 22 may be various. In the second embodiment, the lower case 22 is coupled to the inner case of the upper case 21 in a coupling manner. It is shown.

The lower case 22 is formed with at least one protrusion 41 in the height direction on the outer surface, the inner surface of the upper case 21 in the insertion direction, that is, the height direction of the lower case 22 At least one groove 34 is formed to correspond to the protrusion 41. When the lower case 22 is inserted into the upper case 21, the protrusion 41 is inserted into the groove 34 so that the lower case 22 is fixed to the upper case 21. It is less affected by external forces. If the protrusions 41 and the grooves 34 are not provided, the lower case 22 inserted into the upper case 21 is greatly affected by external force such as vibration, and thus, the lower case 22 is not fixed and may be damaged. This is big.

Specifically, in the second embodiment, when the four protrusions 40 are inserted at the outer edge of the lower surface of the lower case 22 and the lower case 22 is inserted into the upper case 21, the protrusions 40 may be formed. One surface is formed in contact with the inner surface of the upper case 21, the height direction on one surface of the protrusion 40 in contact with the inner surface of the upper case 21 of the protrusion 40 of the 0 o'clock, 12 o'clock direction The protrusions 41 are formed. In addition, a groove 34 is formed on an inner side surface of the upper case 21 so as to correspond to the protrusion 41. Accordingly, when the lower case 22 is inserted into the inner surface of the upper case 21, the protrusion 41 and the groove 34 are closely coupled to each other, and thus the lower case inserted into the upper case 21. (22) is fixed to have resistance and rigidity against external forces such as vibration.

In addition, as shown in Figure 4 showing a side of the second embodiment of the present invention, when the contact between the fixing hole 31 and the contact surface of the coupling object is spaced between the boss 60 therebetween the fastening means The one end of the boss 60 supports the fixing hole 31 and the other end supports the contact surface of the coupling object when the fixing hole 31 and the boss 60 are inserted into the coupling object. The upper case 21 and the coupling of the coupling object makes the sense of stability.

Figure 5 is a perspective view showing a third embodiment of the inductor fixing device according to the present invention, Figure 6 is a state diagram showing a third embodiment of the present invention.

In the first and second embodiments, the circular cross section of the upper case 21 and the contact surface of the coupling object are parallel, but the third embodiment is the circular cross section of the upper case 21 and the coupling object. It is a case where the contact surface of the vertical and accordingly indicates that the fixing portion 30 is formed. That is, the inductor fixing device in the case where the upper case 21 is formed to stand.

Specifically, the upper case 21 is installed in the coupling object in a standing form, the fixing portion 30 is seen in the radial direction of the upper case 21 when viewed from above the upper case 21 in the radial direction It is formed along a long plate shape, the fixing hole 31 is formed at each end of the fixing portion 30, one by one. Then, one surface of the fixing portion 30 is coupled to be connected to the outer surface of the upper case 21 in the direction of coupling to the coupling object.

Therefore, the third embodiment has the advantage that the case is formed upright, so that it is easy to install when the installation space of the inductor is narrow horizontally. Then, the fastening means is inserted into each of the fixing holes 31 formed at both ends of the fixing part 30 to be fastened to the contact surface of the coupling object to fix the inductor.

In addition, one side is coupled to the fixing part 30 and the other side in order to strengthen the coupling of the upper case 21 and the fixing part 30 to prevent damage to the upper case 21 itself due to external force such as vibration. A reinforcing member 33 which is coupled to an outer surface of the upper case 21 to reinforce and support the upper case 21 is additionally formed at a coupling portion of the upper case 21 and the fixing part 30. In addition, one side of the reinforcing member 33 coupled with the fixing part 30 is fixed in the end direction of the fixing part 30 from the coupling portion of the fixing part 30 and the upper case 21. It is installed on the coupling portion to extend beyond the position of the hole 31 to strengthen the rigidity and resistance to the vibration of the fixing hole 31 to prevent damage to the upper case 21 itself and also the upper case 21 And the combination of the fixing part 30 is further strengthened.

Specifically, the reinforcing member 33 used in the first to third embodiments is formed in a plate shape of a right triangle. And, the first side of the two sides forming the right angle of the reinforcing member 33 is coupled to the upper surface of the fixing portion 30, preferably to enhance the rigidity and resistance to vibration of the fixing hole 31 The end of the first side is formed so as to extend beyond the position of the fixing hole 31 from the coupling portion of the fixing part 30 and the upper case 21. In addition, a second side of the reinforcing member 33 perpendicular to the first side is coupled to an outer surface of the upper case 21 in the first and second embodiments, and in the third embodiment, The upper surface of the fixing portion 30 and the outer surface of the upper case 21 is coupled to the portion connected. In addition, the reinforcing member 33 is formed to be symmetrical to face each other by two for each of the fixing portion (30). Therefore, the upper case 21 and the fixing part 30 are strengthened by the reinforcing member 33 and the resistance to the vibration of the fixing hole 31 is strengthened so that the upper case is affected by external force such as vibration. (21) can be prevented from being damaged.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

10 ... coil 20 ... case
21 ... upper case 22 ... lower case
30 ... fixing part 31 ... fixing hole
33 ... reinforcement member 34 ... groove
40 ... protrusion 41 ... protrusion
60 ... Boss

Claims (7)

An inductor fixing device for fixing a core fixed to the coupling object,
A case accommodating the core;
A fixing part formed in the case so that the case is fixed to the coupling object; And,
And a fixing hole inserted into the fixing part so that the fixing part is penetrated through the fixing part to be coupled to the coupling object.
The method of claim 1,
The case has a space therein for accommodating the core, and an upper surface of the upper case formed in a hollow shape and a lower case fixing the core in the upper case by closing an open surface of the upper case. Including,
Two fixing parts are formed, and each of the fixing parts is located on the outer surface opposite to the upper case with respect to the central axis of the upper case,
The lower case includes a plurality of protrusions protruding downward to contact the contact surface of the coupling object to support the lower case.
The method of claim 2,
The lower case includes a protrusion formed in the height direction on the outer surface,
The upper case includes a groove formed on the inner side to correspond to the protrusion in the height direction,
And the protrusion is inserted into the groove when the lower case closes the upper case so that the lower case is fixed to the upper case.
The method of claim 1,
The case is a case where the wide width direction is installed perpendicular to the contact surface of the coupling object,
The fixing part has a vertically long plate shape, and includes a fixing hole formed at each end one by one,
One side of the fixing unit, the inductor fixing device connected to the outer surface of the case in the direction of coupling to the coupling object.
5. The method according to any one of claims 1 to 4,
And a boss having one end supporting the fixing part and the other end supporting the contact surface of the coupling object in the spaced space between the fixing part and the contact surface of the coupling object.
5. The method according to any one of claims 1 to 4,
One side is coupled to the fixing portion and the other side is coupled to the outer surface of the case further comprises a reinforcing member for reinforcing the case to support the inductor.
The method of claim 6,
The reinforcing member is fixed to the inductor fixing device is provided with one side of the reinforcing member to be coupled to the fixing portion extending from the coupling portion of the fixing portion and the case more than the position of the fixing hole in the direction of the end of the fixing portion is installed on the coupling portion.

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