JPH0573914U - High frequency coil - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a high-frequency coil in which the side surfaces of the case can be fixed to each other as necessary. According to the high frequency coil of the present invention, a lug 2 and a recess 3 are formed at opposite edges of the case 1 on the open end side, respectively.
A step 4 is formed by deeply cutting the edge of the recess 3 on the lug 2 side. [Effect] Since the step 4 is always inside the case 1 and the side surface of the base 5 is locked to the step 4, the base 5 does not extend outside the side surface of the case 1. Therefore, there is no obstacle on the side surface of the case 1, and the case 1 can be easily fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case of a high frequency coil whose terminals are directly surface-connected to a conductor pattern of a circuit board.

[0002]

[Prior Art]

 This type of high-frequency coil has a small shape that fits into a cube with one side of 4 mm or less, and a bobbin wound with a coil is fitted in a metal case. FIG. 4 is a perspective view of a conventional high-frequency coil case, and FIG. 5 is a bottom view of the high-frequency coil in which a bobbin base around which a coil is wound are fitted and fixed. As shown in FIG. 4, a lug 21 and a recess 22 are provided on the open end side of the metal case 20 along the opposite edges.

The lug 21 is formed such that its edge is partially elongated and protrudes. Although the recesses 22 are provided on both sides of the lug 21, they are formed by cutting the edges in the direction opposite to the open end side and pushing the side surface of the removed case 20 inward in a semicircle shape. .. The bobbin is fixed to the case 20 by fitting a quadrangular base 23 to the open end side of the case 20, and is fixed by being sandwiched between the edge of the recess 22 and the lug 21 in the vertical direction as shown in FIG.

In the horizontal direction, the side surface of the base 23 is sandwiched between the side surfaces of the case 20 on which the lug 21 is provided in the X direction, and the side surface of the base 23 is formed in the Y direction so that the edge is deeply cut to provide the recess 22. The side surface of the base 23 is locked and fixed to the case at the step 24. Reference numeral 25 is a terminal for surface connection which projects from the side surface of the base 23 in the Y direction. However, since the thickness of the step 24 is only the thin thickness of the metal of the case 20, in order to lock the side surface of the base 23 to the step 24, the base 23 is placed outside the side surface of the case 20 at the portion where the step 24 exists. You need to send it to.

Therefore, in the X direction, the base portion 25 protruding from the side surface of the case 20 to the outside interferes, and thus it is impossible to form a composite coil in which the side surfaces are fixed to each other. Of course, the side surface of the case 20 cannot be fixed because the terminal 25 is provided in the Y direction. When configuring various filters on a circuit board, it is necessary to form a composite coil that integrates a plurality of high-frequency coils, but it is possible to obtain such a composite coil with a high-frequency coil for surface connection. was difficult.

[0006]

[Problems to be solved by the device]

 An object of the present invention is to provide a high-frequency coil for surface connection in which the side surfaces of the case can be fixed to each other as necessary to easily form a composite coil.

[0007]

[Means for Solving the Problems]

 The high-frequency coil of the present invention has lugs formed on the opposite edges on the open end side of the case, the lugs partially protruding from the edges of the case, and the recesses formed by pushing the case side surfaces on both sides of the lug inward. The edge on the lug side of the recess is deeply cut to form a step in the middle of the recess, and the side surface of the base fitted to the open end side is locked by the step. It is characterized by

[0008]

【Example】

 An embodiment of the high frequency coil of the present invention will be described below with reference to FIGS. 1 is a perspective view of the case, and FIG. 2 is a bottom view showing a state in which the base of the bobbin is fitted and fixed in the case. The case 1 of the high-frequency coil according to the present invention is provided with a lug 2 and a recess 3 at opposite edges on the open end side.

The lug 2 has a slender edge, and the recess 3 is formed by pushing the side surfaces of the case 1 on both sides of the lug 2 inward in a substantially semicircular shape. The edge of the recess 3 has a step 4 formed midway along the edge of the recess 3 by deeply cutting the lug 2 side in the direction opposite to the open end side. The bobbin base 5 is fixed by being sandwiched between the horizontally bent lug 2 and the inner edge 6 of the recess 3 as shown in FIG.

In the horizontal X direction, the side surface of the base 5 is sandwiched between the side surfaces of the case 1 on which the lug 2 is provided, and in the Y direction, the side surface of the base 5 is locked by the four steps 4. It is fixed. Reference numeral 7 is a terminal for surface connection protruding from the side surface of the base 5 in the Y direction.

The base of the high-frequency coil configured as described above is locked by the step 4 along the edge of the recess 3 in the Y direction, and since the step 4 is inside the case 1, the base 5 is attached to the case 1. Does not have to be exposed to the outside of the side surface of. Therefore, the side surfaces of the case, in which the lugs 2 and the recesses 3 of the plurality of coils are formed, can be fixed to each other as needed to easily form the composite coil.

FIG. 3 is a perspective view of a case showing another embodiment of the high frequency coil of the present invention. A lug 11 and a recess 12 are provided on the opposite edges of the case 10 on the open end side, respectively. The recesses 12 are formed on both sides of the lug 11. The recesses 12 make two cuts 14 on the side surface of the case 10 in parallel with the lugs 11 and simply press the side surface of the case 10 between the cuts 14. It is formed by putting it in.

Then, a step 13 is formed by deeply cutting the edge of the recess 12 on the lug 11 side opposite to the open end side, and the side surface of the base is locked to the step 13. is there. The shape of the concave portion of the case may be variously modified as long as the step of the concave portion is formed inside the case.

[0014]

[Effect of the device]

 As described above, the high-frequency coil of the present invention has a step formed along the edge by deeply cutting the edges of the recesses on both sides of the lug formed on the open end side of the case, and is fitted to the open end side. The side surface of the base to be fitted is locked by the step inside the case. And the base fitted to the case does not go out from the side surface of the case. Therefore, it is possible to easily form the composite coil by fixing the side surfaces of the case to each other, if necessary, in a state where the composite coil can be used alone.

[Brief description of drawings]

FIG. 1 is a perspective view of a case showing an embodiment of a high frequency coil of the present invention.

FIG. 2 is a bottom view of the high frequency coil of the present invention.

FIG. 3 is a perspective view of a case showing another embodiment of the high frequency coil of the present invention.

FIG. 4 is a perspective view of a case of a conventional high frequency coil.

FIG. 5 is a bottom view of a conventional high frequency coil.

[Explanation of symbols]

 1 case 2 lugs

Claims (1)

[Scope of utility model registration request] 1. A lug, which partially projects from the edge of the case, and a recess, which is formed by pushing the side surfaces of the case on both sides of the lug inward, are formed at the opposite edges on the open end side of the case. The edge on the lug side of the recess is deeply cut to form a step in the middle of the recess, and the side surface of the base fitted to the open end side is locked by the step. And a high frequency coil.