JP2550874Y2 - Storage tray - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray for individually storing a plurality of rectangular parallelepiped objects, for example, QFP type ICs.

[0002]

2. Description of the Related Art FIG. 7 is a schematic plan view of a conventional IC storage tray used for storing and transporting a QFP type IC having gull wing type leads on four sides. The IC storage tray 1 is a molded plastic product,
As shown in FIG. 7, an IC divided into the same shape by a wall surface
Are arranged in two rows at an equal pitch. FIG. 8 is an enlarged plan view showing the IC storage section A of FIG. Ribs 2, 2, 3, and 3 are formed on the bottom surface of the IC housing portion A so as to form four sides of a rectangle, and the inner dimension of the rib is matched with the size of the IC package portion to be housed.

At present, according to the standards of the Japan Electronic Machinery Manufacturers Association, 5 ×
5,6 × 6,7 × 7,10 × 10,12 × 12,14 × 14,20 × 2
0, 24 × 24, 28 × 28, 32 × 32, 36 × 36, 40 × 40, 44 × 44
(mm) size square, and 5 × 7, 7 × 10, 10 × 14, 14
It defines the nominal size of the package portion of a rectangular IC having a size of × 20, 20 × 28, 28 × 40 (mm), and ribs having lengths and intervals corresponding to these dimensions are formed, respectively.

FIG. 9 is a sectional view taken along the line IX-IX of FIG. 8, in which the IC 6 is stored in the IC storage section A of FIG. The package portion of the IC 6 is fitted so as to be surrounded by the ribs 2, 2, 3, 3 formed on the bottom surface of the IC housing portion A. Since the package portion of the IC 6 is tapered so as to increase in thickness from the upper surface portion and the bottom portion toward the center of the side surface, when the package portion is fitted, the inner size is adjusted to the size of the bottom portion of the package portion. The ribs 2, 2, 3, 3 formed press the center of the side surface to restrain the movement of the IC. The height of the ribs 2, 2, 3, 3 is determined so that the tip of the lead does not contact the bottom surface of the IC storage section A when the package of the IC 6 is pressed. Since the portion is stored in the ribs 2, 2, 3, 3 and the bottom surface of the IC storage portion A in a non-contact manner, the lead portion is not damaged.

[0005]

[Problems to be Solved by the Invention] As described above, this I
The C storage tray can store a large number of ICs of the same size in an orderly manner without damaging the leads. However, for each dimension of the package portion of the IC, it is necessary to manufacture many types of molds for the storage tray dedicated to the IC, which has been expensive. In addition, if an attempt is made to store ICs having a common length of one of the package portions in the same tray, omitting the manufacture of the mold, for example,
An axa-dimension IC package portion is sandwiched between ribs on an axb-dimension (a <b) IC storage tray, and a lead portion on the other one side straddles the rib. Can be stored. However, the lead portions on the two side surfaces and the other side surface straddle the ribs and are not in contact with the storage portion A, but the lead portions formed on both ends of the remaining one side surface contact the ribs for the dimension b. Damage will result. The present invention has been made in view of such circumstances, and by providing or using a removable rib, a plurality of types of rectangular parallelepiped objects having at least one dimension different from each other are stored in the same tray. be able to. Accordingly, it is desirable to provide a storage tray that can share one type of mold and can hold a plurality of types of ICs without damaging the lead portion when the ICs are stored as a rectangular parallelepiped. Aim.

[0006]

SUMMARY OF THE INVENTION A storage tray according to the present invention has a plurality of storage portions, and a tray, which is formed on a bottom surface thereof and sandwiches a rectangular parallelepiped object by parallel ribs facing each other, includes a plurality of storage portions. In addition, a rib parallel to the rib is provided so as to be removable.

[0007]

In the storage tray of the present invention, ribs are formed on the bottom surface of each of the plurality of storage portions at positions where, for example, a rectangular parallelepiped object of a × b size can be stored, and between the parallel ribs separated by a length b, When a removable rib is formed in parallel at a position separated by a length a from any of the ribs, the rib is removed or left so that both a × b and a × a sizes can be obtained. A rectangular parallelepiped can be stored on one tray.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing embodiments thereof. FIG. 1 is a plan view of a storage tray according to the present invention for storing ICs of a × a and a × b dimensions (a <b). The storage tray 1 is a plastic molded product, and storage sections 7, 7,..., Which are partitioned into the same shape by wall surfaces, are arranged in two rows at an equal pitch. FIG. 2 is an enlarged partially cutaway perspective view of the storage section B of FIG.
FIG. 3 is an enlarged cross-sectional view taken along line III-III of the storage section B in FIG. 1. Ribs 21, 22, 2 that are shorter than length a
The ribs 21 and 22 are formed so that the ribs 21 and 22 are parallel and the inner method is b, and the ribs 23 and 24 are parallel and close to the rib 22 side so that the inner method is a. It constitutes four sides of a rectangle having dimensions.

The bottom surface of the storage portion B has a U-shaped opening 5 having a width c and opened to the rib 21 side in a plan view, and a portion surrounded by the opening 5 has a tongue shape. . This tongue part 8
Is thinner than the other portion of the bottom surface, and the rib 4 is formed at the tip of the tongue side portion 8 in parallel with the ribs 21 and 22 and apart from the rib 22 by a length a. The ribs 21, 22, 23, 24, and 4 have their upper surfaces at the same height, the ribs 21, 22, 23, and 24 are tapered on the inside facing each other, and the rib 4 is tapered on the rib 22 side.
The bottom surface of the storage portion B on the side of the ribs 21, 22, 23, 24, 4 where the taper is not provided is formed lower than other portions of the bottom surface so that the leads of the IC do not contact.

FIGS. 4 and 5 respectively show the III-I of the storage section B of FIG.
FIG. 4 is a cross-sectional view showing a state in which a × a and a × b ICs are stored in an enlarged cross-sectional view taken along line II. When accommodating an a × a IC, as shown in FIG. 4, the package portion is fitted in a square formed by ribs 22, 23, 24, and 4, and the lead portion straddles the rib. Then, when accommodating an a × b IC, as shown in FIG. 5, the rib 4 is lightly pushed to fold the tongue side 8 from the bottom surface of the accommodating portion B, and the ribs 21, 22, 23, 24 are used. The package is fitted into the resulting rectangle, and the lead is stored over the rib. Thus, the storage tray of the present invention having the removable rib 4 can store two types of ICs, a × a and a × b.

FIG. 6 is an enlarged plan view of the storage section 7 showing another embodiment of the present invention. In the embodiment shown in FIGS. 1 to 5, two parallel ribs 21, 22, 23, 24 facing each other and a rib 4 parallel to the ribs 21, 22 are formed. Instead, for example, as shown in FIG. 6A, a pair of parallel ribs 21 and 22 facing each other and a removable rib 4 parallel to these may be formed. Or FIG. 6 (b)
As shown in FIG. 5, ribs 21, 22, and 23 forming three sides, and a removable rib 4 parallel to the ribs 21 and 22 may be formed. Further, as shown in FIG. 6 (c), a pair of parallel ribs 21 and 22 facing each other, poss 25 and 26 separated by a length a and ribs 4 parallel to and removable from the ribs 21 and 22 are formed. You may.

In the embodiment shown in FIGS. 1 to 5, two types of ICs, a × a and a × b, are described.
As shown in (d), two sets of opposing parallel ribs 21,2
2, 23, 24, and a removable rib 4 is formed at a position parallel to the ribs 21, 22 at a distance a from the rib 22, and a removable rib 4 'is provided between the ribs 23, 24. Length c (c from 23
<A) The ribs 4 and 4 ′ are removed to remove an a × b IC by removing the ribs 4 and 4 ′, an a × a IC is removed by removing only the rib 4 ′, and only the rib 4 is formed by forming the ribs 4 and 4 in parallel. Then, b × c ICs and a × c ICs can be stored with the ribs 4 and 4 ′ remaining. In this way, by forming the removable rib at a plurality of locations, a plurality of types of ICs can be stored in one tray.

Since the storage tray of the present invention supports the IC on the side and bottom surfaces of the package portion, the storage tray can also store an IC having no lead portion, for example, a quad flat leadless package. Further, in this embodiment, the case where ICs are housed is described. However, the present invention is not limited to this, and any rectangular parallelepiped that requires careful handling can be housed.

[0014]

As described above, in the storage tray of the present invention, a plurality of types of rectangular parallelepiped objects can be stored in one type of tray by providing a removable rib on the bottom surface of the storage tray and folding it off. Therefore, one type of mold and a tray manufactured by this can be shared by a plurality of types of rectangular parallelepiped objects. Further, when the IC is stored as a rectangular parallelepiped object, a plurality of types of ICs can be stored in a storage unit having the same size of one tray without forcibly storing the IC in a storage unit having an inappropriate size and damaging the lead unit. The present invention has an excellent effect, for example, it can accommodate ICs.

[Brief description of the drawings]

FIG. 1 is a plan view of a storage tray according to the present invention.

FIG. 2 is a partially cutaway perspective view in which a storage section B of FIG. 1 is enlarged.

FIG. 3 is a cross-sectional view of the storage section B of FIG. 1 taken along the line III-III.

FIG. 4 is a cross-sectional view taken along line III-III of the storage section B of FIG. 1 showing a state in which an a × a IC is stored.

FIG. 5 is a cross-sectional view taken along line III-III of the storage section B of FIG. 1 showing a state in which a × b ICs are stored.

FIG. 6 is an enlarged plan view of a storage section showing another embodiment of the present invention.

FIG. 7 is a schematic plan view of a conventional storage tray.

8 is an enlarged plan view of the storage section A of FIG.

FIG. 9 is a cross-sectional view taken along line IX-IX of the storage section A of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage tray 2,3,21,22,23,24 Rib 4,4'Removable rib 5 Opening 6 IC 7 Storage part 8 Tongue side

Claims (1)

(57) [Scope of request for utility model registration] 1. A tray having a plurality of storage portions and opposed to each other and formed on a bottom surface thereof and having parallel ribs opposed thereto, wherein a rib parallel to the ribs can be removed between the ribs in a tray for holding a rectangular parallelepiped object. A storage tray, which is provided.