JPH0595007U - Taping coil - Google Patents

Abstract

(57) [Summary] [Purpose] To improve taping workability. [Structure] In the taping coil 1, a coil is assembled on a base 3 made of a synthetic resin material, a terminal 5 is planted on the bottom surface of the base 3, and a lower end of a metal case 7 is fitted and fixed to the peripheral surface of the base 3. To be done. A pair of through holes 3b and 3c for press-fitting the taping terminals 8 and 9 are formed in the base 3 so as to face each other. When taping the taping coil 1, one end of each of the taping terminals 8 and 9 has a through hole 3b.
It is easily pressed into 3c. When the coil 1 is assembled on the substrate, the coil 1 is easily pulled out from the taping terminals 8 and 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a taping coil, and is particularly designed to facilitate taping.

[0002]

[Prior Art]

 In a conventional taping coil 1, a terminal-wound bobbin 2 wound as shown in FIG. 6 is housed and held in a metal cylindrical case 7. Lugs 7a and 7b for welding the taping terminals 8 and 9 may be provided on the lower ends of the opposite side surfaces of the case 7 so as to project downward (FIG. 6A), or the taping terminals 8 and 9 may be caulked. The caulking piece 7c (7d) for cutting is cut and raised (Fig. 6B). The taping coil 1 has a size of 5 mm on each side, which is quite small.

In order to tap these conventional taping coils 1, first, one end of a pair of taping terminals 8 and 9 is welded to lugs 7a and 7b of the case, respectively, or crimped with crimping pieces 7b and 7d. .. Next, the other ends of the taping terminals 8 and 9 are fixed on the tape mount 10 with an adhesive cover tape 11. The tape mount 10 is formed with through holes 10a used to convey the taped chain coils at the same pitch. When this chain coil is incorporated into the substrate, the taping terminals 8 and 9 are cut at appropriate positions.

[0004]

[Problems to be solved by the device]

 To taping a conventional taping coil, it is necessary to weld or crimp the taping terminal, which takes time. The present invention aims to solve this problem and improve the workability of taping.

[0005]

[Means for Solving the Problems]

 (1) For taping in which a coil is assembled on a base made of synthetic resin material, terminals are planted on the bottom surface of the base, and the lower end of a metal cylindrical case is fitted and fixed to the peripheral surface of the base. In the coil according to the first aspect of the present invention, a pair of through holes for press-fitting the taping terminals are formed in the base so as to face each other. (2) In the invention of claim 2, a pair of cutouts is provided at the lower end of the case, and projections that respectively fit with the cutouts are formed on the peripheral surface of the base. One through hole is formed in the vicinity of the portion or each protrusion. (3) In the invention of claim 3, one notch is provided at the lower end of the case, and a protrusion that fits with the notch is formed on the peripheral surface of the base. One through hole for press-fitting the taping terminal is formed in the vicinity.

Further, a semicircular groove, which is opposed to the through hole and which is semicircular when viewed from above and below, is formed in a vertical direction on the peripheral surface of the base facing the protrusion, and the groove of the case is closely opposed to the groove. An extruded part that is extruded to the outside in a semicircular shape when viewed from below is formed in the lower end in the up-down direction, and an insertion hole for inserting the taping terminal is formed between the extruded part and the groove. It (4) In the invention of claim 4, in the above-mentioned item (3), the through hole is formed instead of the one through hole (consisting of the semicircular groove of the base and the pushing portion of the case). Are formed, and as a result, the two insertion holes are formed to face each other. (5) According to the invention of claim 5, in the above (3) or (4), the extruding portion of the case is extended downward to form the ground lug. (6) In the invention of claim 6, of the terminals planted in the base, two opposing terminals are formed longer than the other terminals to serve as taping terminals. In addition, a recess is formed around the base of the taping / combined terminal of the base, the terminal of the coil is soldered in the recess, and then the filler is injected into the recess.

[0007]

【Example】

 An embodiment of this invention is shown in FIG. 1 to FIG. 5 with the same reference numerals attached to the portions corresponding to FIG. (A) Embodiments of claims 1 and 2 According to the invention of claim 1, as shown in FIGS. 1 and 2, a pair for press-fitting the taping terminals 8 and 9 between two opposing sides of the base 3. Through holes 3b and 3c are formed. 1B and 2B show a taped state. When the taping coil 1 is mounted on the substrate, the coil 1 is pulled out from the taping terminals 8 and 9. In this example, the grounding lugs 7a and 7b are arranged near the through holes 3b and 3c, respectively, but they may be moved to other places. For example, it is convenient in terms of pattern design of the substrate if the terminal 5 is provided near the terminal electrically connected to the ground.

According to the second aspect of the present invention, as shown in FIG. 2, the lower end of the case 7 is cut out at two opposite positions by substantially the thickness of the base 3 and a slight width to form a rectangular cutout portion. 7e and 7f are provided. Further, projections 3d and 3e which are fitted respectively to the cutouts are formed so as to face the peripheral surface of the base 3, and the taping terminals 8 and 9 are press-fitted into the projections or in the vicinity of the projections. Through holes 3b and 3c are formed. In this example, the earth lugs 7a and 7b are provided at the diagonally lower end of the case.

In the case of FIG. 2, the through holes 3b, 3c can be provided in the protrusions 3d, 3e or in the vicinity thereof even if there is no space for providing the through holes 3b, 3c in the base 3 as shown in FIG. It is especially effective for ultra-small coils. Although not shown in FIGS. 1 to 4, a rectangular hole as shown in FIG. 5B for accommodating a capacitor is formed in the base 3 so as to face the central portion of the plate surface. In many cases, the place where the through hole is drilled is extremely limited. (B) Embodiments of Claims 3 to 5 According to the invention of Claim 3, as shown in FIG. 3, notches 7f, protrusions 3e and through holes 3c similar to those in FIG. 2 are provided on one side of the bottom surface of the coil 1. It is provided. On the other hand, a semicircular groove 3f is formed in the vertical direction on the peripheral surface of the base 3 facing the protrusion 3e, facing the through hole 3c. Further, a push-out portion 21 extruded outward in a semi-circular shape when viewed from below is formed vertically at the lower end of the case 7 so as to face the groove 3f, and between the push-out portion 21 and the groove 3f. An insertion hole 22 for inserting the taping terminal 8 is formed.

The insertion hole 22 has a diameter larger than that of the through hole 3c so that the taping terminal 8 can be freely inserted and removed. The insertion hole 22 is used for preventing the taped coil from rotating, and the coil is held by one taping terminal press-fitted into the through hole 3c. Since the coil can be provided with directionality by providing the push-out portion 21, it is possible to prevent mistakes in the direction when taping, and it is easy to detect the coil in which the direction is reversed. .. Further, since the insertion hole 22 is formed further outside than the through hole 3b of FIG. 2 with respect to the center of the base 3, it is possible to form a microminiature coil in which there is no space for providing the through hole in the base 3 as shown in FIG. It is valid .

Although not specifically shown in the invention of claim 4, the same thing as the insertion hole 22 at the left end of FIG. 3A is symmetrically provided at the right end, and the through hole 3C of the same figure is deleted. According to the invention of claim 5, the push-out portion 21 is extended to form the earth lug 7a. The cross-section of the earth lug 7a is a semi-circular rib shape, which improves the strength of the lug. Furthermore, when taping, the taping terminals are adjacent to each other. (15 mm, extremely thin) is prevented.

In the above description, when the taping coil was assembled into the board, it was pulled out from the taping terminal. However, in some cases, the taping terminal is cut without pulling out and soldered to the board together with the other terminals 5. You can also do it. (C) Embodiment of Claim 6 In the invention of Claim 6, as shown in FIG. 4, among the terminals 5a to 5f planted in the base 3, the opposing terminals 5b and 5e are more than the other terminals. It is formed long and is used as a taping dual-purpose terminal. In addition, recesses 3g are formed around the bases of the taping / combined terminals 5b and 5e of the base 3, and the ends of the winding 4a are entangled in the recesses and half-bonded, and then the recess 3g is filled with a filler (for example, Adhesive) 24 is injected and cured.

Since the taping combined terminals 5b and 5e are extended from the other terminals, they are easily bent, and the ends of the windings 4a connected to the taping combined terminals 5b and 5e are disconnected due to the bending or external vibration. Since it is easy, by injecting and hardening the filling material 24 into the concave portion 3g, an external force is not applied to the end of the winding, and the disconnection is hard to occur. When the taped coil of FIG. 4 is mounted on the substrate, the taping-purpose terminals 25b and 5c are cut at appropriate positions.

In the case of FIG. 4, since the taping terminals 5b and 5e are provided, it is not necessary to provide a through hole or an insertion hole for inserting the taping terminal as in the case of FIGS. Especially effective for ultra-small coils.

[0015]

[Effect of the device]

 According to the invention of claims 1 to 5 (FIGS. 1 to 3), the coil is easily taped by inserting the taping terminals 8 and 9 into the through holes 3b and 3c or the insertion hole 22 provided on the bottom surface of the coil. can do. Therefore, the workability of taping is very good. Further, since the coil can be easily pulled out from the taping terminals 8 and 9 when the coil is mounted on the substrate, the work efficiency of mounting can be improved.

In the invention of claim 6 (FIGS. 4 and 5), since the taping terminals 5b and 5e are provided, when taping, the taping terminals 8 and 9 are welded or crimped to the coil as in the conventional case. It is a hassle.

[Brief description of drawings]

FIG. 1A is a bottom view showing an embodiment of the device of claim 1;
Is a front view of the case where the example A is taped.

FIG. 2A is a bottom view showing an embodiment of the invention of claim 1 or 2, and B is a front view when the embodiment of A is taped.

FIG. 3A is a bottom view showing an embodiment of the invention of claims 3 and 5, and B is a front view when the embodiment of A is taped.

FIG. 4A is a bottom view showing an embodiment of the invention of claim 6;
Is a front view of the case where the example A is taped.

5A and 5B are a side view and a perspective view, respectively, of the base 3 of FIG. 4A, and C is a cross-sectional view of a main part of A and B.

6A and 6B are perspective views showing a conventional taping coil for taping, and C is a front view of the taping coils A and B with the case removed.

Claims (6)

[Scope of utility model registration request] 1. A coil is assembled on a base made of a synthetic resin material, terminals are planted on the bottom surface of the base, and a lower end of a metal cylindrical case is fitted and fixed to the peripheral surface of the base. In the taping coil, a pair of through holes for press-fitting the taping terminals into the base are formed so as to face each other. 2. A pair of cutouts are provided at the lower end of the case so as to face each other, and projections that respectively fit with the cutouts are formed on the peripheral surface of the base. The taping coil according to claim 1, wherein one through hole is formed in the vicinity of the protrusion. 3. A coil is assembled on a base made of a synthetic resin material, terminals are planted on the bottom surface of the base, and a lower end of a metal cylindrical case is fitted and fixed to the peripheral surface of the base. In the taping coil, one notch is provided at the lower end of the case, and a protrusion that fits the notch is formed on the peripheral surface of the base, and the protrusion or the vicinity of the protrusion is formed. One through-hole for press-fitting the taping terminal is formed, and a semicircular groove facing the through-hole is formed on the peripheral surface of the base facing the projecting portion in a vertical direction. Formed in the vertical direction, the push portion extruded to the outer side of the semicircle viewed from below at the lower end of the case in close proximity to the groove is formed in the vertical direction, and between the push portion and the groove, Insertion hole is formed to insert the taping terminal. Is characterized in that is, coil taping. 4. The insertion hole (composed of a semi-circular groove of the base and an extruded portion of the case) instead of the one through hole according to claim 3, and as a result, A taping coil, wherein the two through holes are formed so as to face each other. 5. The taping coil according to claim 3, wherein the push-out portion of the case is extended downward to form a ground lug. 6. A coil is assembled on a base made of a synthetic resin material, a plurality of terminals are planted on the bottom surface of the base, and the lower end of a metal cylindrical case is fitted and fixed to the peripheral surface of the base. In the taping coil, the two terminals facing each other out of the terminals implanted in the base are formed longer than other terminals to serve as taping / combining terminals, and the base of the taping / combining terminals of the base is formed. A taping coil, characterized in that a recess is formed around, and a terminal of the coil is soldered in the recess, and then a filler is injected into the recess.