JPH0356547Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a series of electronic parts, and more particularly to a series of electronic parts, in which a large number of chip parts are held in an embossed type holder.

(Prior Art) Chip-shaped electronic components have conventionally been mounted on printed circuit boards using automatic mounting machines. One means of supplying such chip parts is a continuous roll of electronic parts. Typically, a series of electronic components is wound and held on a reel.

(Problems to be Solved by the Invention) In an automatic mounting machine, a large number of serially wound electronic components wound on a reel are used and held side by side. Accordingly, conventional automatic mounting machines using continuous winding bodies for electronic components have tended to become larger. The reason for this is the width of the electronic component series. However, the width of the tape-shaped holder itself is standardized, and cannot be unnecessarily narrowed. To this end, it is conceivable to remove the flange, which has a large effect on the overall width of the electronic component serially wound body. However, without the flange, the wound tape-shaped series of electronic components would collapse due to impact during transportation, for example.

Therefore, the main purpose of this invention is to provide a continuous roll of electronic components that has a small overall width and does not cause the load to collapse.

(Means for solving the problem) This invention consists of a cavity formed in a resin tape, a first part protruding from the bottom of the cavity at a position different from the position of the cavity, and a first part fitted into the first part. When the electronic component chain is wound around the winding core, the first part of a certain layer is fitted into the second part of the adjacent winding layer. , a series of electronic parts.

(Function) The first part and the second part of the adjacent layers are fitted together, and this fitting mainly prevents the movement of the electronic component chain in the axial direction of the wound body and prevents it from collapsing. .

(Effects of the invention) According to this invention, compared to the conventional reel type, since there is no flange, it is possible to obtain an electronic component serially wound body having a smaller overall width or thickness.
Therefore, the automatic mounting machine using this can also be downsized. Furthermore, since no reel is used, not only is it possible to significantly reduce costs in terms of materials and processes, but there is also no need to collect such reels.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Embodiment) FIG. 1 is an illustrative cross-sectional view showing an embodiment of this invention. The electronic component series 10 includes a series of tape-shaped electronic component series 14 wound in a laminated manner around a cylindrical or columnar winding core 12 .

As shown in FIG. 2, the electronic component series 14 includes a holder 16 in which a large number of cavities 18, 18, . And this holding body 1
6, there are feed holes 20 at a constant pitch on the side in the width direction.
20,... are formed. A chip component 22 is housed in each of the cavities 18, and in this state, a cover sheet 24 is pasted on the upper surface of the holder 16 except for the portion of the feed hole 20, and the chip component 22 is sealed within the cavity 18. Ru. This cover sheet 24 is also made of, for example, a synthetic resin film, and the side edges of the cover sheet 24 are thermally welded to hold the holder 1.
It is glued to 6.

A groove 26 that continues in the length direction of the holder 16 is formed on the side end side of the feed hole 20 of the holder 16 . As shown in FIG. 2, the groove 26 has a bag-like cross section with a narrow opening. Further, below this groove 26, a protrusion 28 that protrudes from there and continues in the longitudinal direction of the holding body 16.
is formed. The cross-sectional shape of this protrusion 28 is the groove 26.
It has a water droplet shape that is squeezed at its upper end, similar to the cross-sectional shape of . The thickness of the protrusion 28 is selected to be slightly smaller than the thickness of the groove 26. However, the width of the opening of the groove 26 is selected to be slightly smaller than the thickness of the protrusion 28. Further, the height of the protrusion 28 and the depth of the groove 26 are approximately similar, and at least a part of the protrusion 28, preferably all, is connected to the cavity 18.
protrudes downward from the bottom surface 18a.

Cutouts 30, 30, . . . are formed at appropriate intervals on the lower edge of the protrusion 28. This notch 30
The holding body 16, that is, the electronic component series 14 is placed on the winding core 1.
This is to alleviate the "wrinkles" caused by the difference in circumferential length at the radial position when winding the wire.

As shown in FIG. 3, the winding core 12 is made of a cylindrical member made of, for example, resin.
Its width or thickness W1 is selected to be slightly larger than the width W2 (FIG. 1) of the tape-shaped electronic component series 14 wound around it. A slit 12a is formed on the circumferential surface of the winding core 12. This slit 12a ensures the start of winding by inserting the tip of the electronic component string 14 therein.

Holder 1 of electronic component series 14 as shown in FIG.
6 is located at the slit 1 of the winding core 12 shown in FIG.
2a, thereby forming a winding start. Thereafter, the winding core 12 is rotated, and the electronic component series 14 are sequentially wound in a laminated manner on the circumferential surface of the core 12 as shown in FIG. In this state, as can be clearly seen from FIG. 1, the protrusions 28 formed on the holder 16 of a certain layer fit into the grooves 26 of the holder 16 of the layer below it. Since the width of the opening of the groove 26 is smaller than the thickness of the protrusion 28, the protrusion 28
6 is prevented. That is, the grooves 26 and the protrusions 28 in the adjacent layers connect the holders 16, ie, the electronic component series 14, in the adjacent layers to each other. Therefore, the electronic component continuous winding body 10
It is possible to prevent deformation not only in the axial direction but also in the circumferential direction.

FIG. 4 is a perspective view showing an example of an electronic component series used in another embodiment of this invention. This electronic component series 14 is similarly formed as an embossed type, and a groove 32 having a V-shaped cross section is formed in place of the groove 26 and protrusion 28 shown in FIG.

Then, an electronic component series 1 as shown in FIG.
4 are sequentially wound in a laminated manner on the side surface of the winding core 12, as shown in FIG. and thereby the winding body 1 of the electronic component series 14
0 in the axial direction is regulated.

FIG. 6 is a perspective view showing an example of an electronic component series used in another embodiment of this invention. In this embodiment, a side surface portion 34 is formed that hangs downward from the side end portion of the holding body 16. A recess 36 is formed in the upper part of this side part 34, and the lower end of the side part 34 is bent inward to form an engaging part 38. The upper end of the side surface portion 34 is located slightly inward, and therefore the upper end of the side surface portion 34 is formed to be slightly narrower than the lower portion thereof.

When the electronic component chain 14 as shown in FIG. 6 is wound in a layered manner on the circumferential surface of the winding core 12, as shown in FIG. 38 fits into a recess 36 formed in the side surface 34 of the lower layer holder. At this time, since the upper portion of the side surface portion 34 is formed narrowly, the side surface portion 34 becomes substantially flush and flat.

There is a constant gap G between the lower end of the side surface portion 34, that is, the engaging portion 38, and the bottom surface of the cavity 18. Such a gap G serves to prevent the lowermost layer of the holder from being crushed when the holder is wound as shown in FIG. That is,
The engaging portion 38 of the side surface portion 34 of the holder of the lowermost electronic component series contacts the winding core 12, and the bottom surface 18a of the cavity 18 does not contact the winding core 12. Therefore, the elastic force of the side surface portion 34 can effectively prevent the cavity of that layer from being destroyed.

FIG. 8 is a perspective view showing another example of the electronic component series used in this invention. In this example, the first
In both the embodiments shown in FIG. 5 and FIG. 5, the protrusions engage with the recesses to prevent misalignment between the layers. As another means for preventing such displacement, an electronic component series shown in FIG. 8 is used.

In FIG. 8, both ends of the holder 16 are bent and bent, and the lower ends of the side portions 34 are further bent inward, so that the holder 16 has a part that protrudes downward from the bottom surface of the cavity 18. A sloped portion 40 is formed. A slit 42 is formed at the end of the holding body 16 in the width direction.

When the electronic component string 14 shown in FIG. 8 is wound around the winding core 12 in a laminated manner, as shown in FIG. The electronic component series of the two layers is thereby prevented from moving in the axial or circumferential direction by the inclined portion 40 and the slit 42.

Although the feed hole is omitted in FIG. 8, the slit 42 may be used as the feed hole in this embodiment.

FIG. 10 is an illustrative view showing an example of a holding structure for a large number of serially wound electronic components. The electronic component series 10 formed according to the embodiment described above is supported as shown in FIG. 10 during transportation. That is, both flanges 48 connected by a shaft 46
A large number of electronic component serially wound bodies 10 are supported between them. At this time, the flange 48 serves, for example, as a reinforcing member during transportation.

As can be seen from FIG. 10, by using the electronic component continuous winding body 10 of this invention, the width can be made significantly smaller than that using a conventional flanged reel. It is advantageous in terms of space factors such as.

When a large number of electronic component series 10 are held as shown in FIG. 10, the difference W3 between the width W1 of the winding core 12 and the width W2 of the electronic component series 14 (or 14')
is effective as a clearance between adjacent electronic component serially wound bodies 10.

However, suitable spacers (not shown) may be interposed in such clearance areas for reinforcement, for example during transportation.

The fitting portion consisting of the first portion and the second portion was formed at the end portion in the width direction in any of the above embodiments. However, the fitting portion may be formed at any suitable position, such as in the immediate vicinity of the cavity or between the cavity and the feed hole, as long as it is at least at a position different from the position of the cavity.

Further, in the embodiments of FIGS. 1 and 5, the fitting portions are formed only on one side in the width direction, but they may be formed on both sides with the cavity in between.

Further, the shapes, arrangement, etc. of the illustrated fitting portions, that is, the first portion and the second portion are merely examples, and may be arbitrarily changed or modified as necessary.

[Brief explanation of the drawing]

FIG. 1 is an illustrative cross-sectional view showing one embodiment of this invention. FIG. 2 is a perspective view showing an example of a series of electronic components used in the embodiment shown in FIG. FIG. 3 is a perspective view showing an example of the winding core. FIG. 4 is a perspective view showing another example of the electronic component series. FIG. 5 is a sectional view showing a state in which the series of electronic components shown in FIG. 4 is wound.
FIG. 6 is a perspective view showing still another example of the electronic component series. FIG. 7 is a sectional view showing another embodiment of this invention in which the electronic component series of FIG. 6 is used. FIG. 8 is a perspective view showing still another example of the electronic component series. FIG. 9 is an illustrative cross-sectional view showing a state in which the series of electronic components shown in FIG. 8 is wound. FIG. 10 is an illustrative view showing a state in which a large number of electronic component serially wound bodies are held side by side. In the figure, 10 is an electronic component continuous winding body, 16 is a holding body, 18 is a cavity, 26 is a groove, 28 is a protrusion, 30 is a notch, 34 is a side surface, 36 is a recess, 3
8 represents an engaging portion, 40 represents an inclined portion, and 42 represents a slit.

Claims (1)

[Claims for Utility Model Registration] 1. By molding a resin tape, a large number of cavities are formed distributed in the length direction of the tape, and a first cavity protrudes downward from the bottom surface of the cavity at a position different from the position where the cavities are formed. a part and a second part into which the first part can be fitted, and each cavity includes a series of electronic parts holding a chip part, the series of electronic parts being wound around the outer surface of the winding core, A serially wound electronic component body, wherein one part is fitted into the adjacent second part. 2. The electronic component serially wound body according to claim 1, wherein the second portion includes a recess. 3. The electronic component serially wound body according to claim 1, wherein the second portion includes a slit.