JPH0362530A - Case for lead frame - Google Patents

Abstract

PURPOSE:To prevent lead frames from projecting by a method wherein a case for lead frame use is provided with a stopper, which is held by a spring on the open surface of the case, is slided at a right angle to lateral grooves and can open and close the lateral grooves by an external force. CONSTITUTION:A stopper 1 is mounted in a case main body 4 in a state that it can be slided vertically and parts of the stopper 1 project from the bottom of the main body 4. A spring 2 pushes down the stopper 1 downward. The stopper 1 is provided with slits 5 at positions, where correspond to lateral grooves 6 formed in the sides facing each other of the case 4, of the stopper 1. When an external force is applied to the parts, which project from the bottom of the main body 4, of the stopper 1, the stopper 1 is slided upward and the slits 5 and the grooves 6 are made to coincide with each other and the taking in and out of components becomes possible. When the external force 3 is removed, the stopper 1 is slided by the spring 2 downward, the grooves 6 are closed and the taking in and out of the components becomes impossible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lead frame case used for storing and transporting semi-finished products in die bonding and bonding processes.

[Conventional technology]

The conventional lead frame case (hereinafter referred to as L/F case) has horizontal grooves 6 laminated on two opposing surfaces of the case body 24, as shown in FIGS. 8 and 9 (a) and (b). A semi-finished product is inserted into this horizontal groove 6 during the die bonding and bonding process.

It was stored and used for transportation with a structure that did not have a stopper on the open surface.

[Problem to be solved by the invention]

The conventional L/F case described above has a structure in which there is no stopper on the open surface. For this reason, electronic components in a lead frame state may be damaged due to vibrations, shocks, etc. that occur during transportation.
/F There is a drawback that electronic components can be damaged if they are dropped from the case or the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide an L/F case in which electronic components in the form of lead frames are not damaged due to jumping out or falling during transportation.

[Means to solve the problem]

The present invention provides a lead frame case that has horizontal grooves formed in a laminated manner on two opposing surfaces, and in which electronic components in the form of a lead frame are inserted into the horizontal grooves from the open surface and housed in a laminated manner. It has a stopper which is held by a spring and slides in a direction perpendicular to the lateral groove so that the lateral groove can be opened and closed by an external force.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway perspective view of a first embodiment of the present invention, FIG. 2 is a front view of the stopper in FIG. 1, and FIGS. 3(a) and (b).
) is a front view and a longitudinal sectional view showing the stopper in FIG. 1 in a closed state, and FIGS. 4(a) and 4(b) are a front view and a longitudinal sectional view showing the stopper in FIG. 1 in an open state.

In the first embodiment, as shown in FIG. 1, a stopper 1 is attached to a case body 4 so as to slide up and down, and a part of the stopper 1 protrudes from the bottom surface of the case body 4. The spring 2 is attached to press the stopper 1 downward.

As shown in FIG. 2, the stopper 1 is provided with a slit 5 at a position corresponding to a lateral groove 6 formed on two opposing surfaces of the case body 4.

When an external force 3 acts on the part of the case body 4 that protrudes from the bottom, the stopper 1 slides upward and the slit 5 and the horizontal groove 6 are aligned, as shown in FIGS. 4(a) and 4(b). electronic components can be taken in and out. Next, when the external force 3 is released, the stopper 1 is slid downward by the attached spring 2, and the horizontal groove 6 is closed, as shown in FIGS. 3(a) and 3(b). Electronic parts cannot be inserted or removed.

FIG. 5 is a partially cutaway perspective view of the second embodiment of the present invention, FIG. 6 is a sectional view showing the stopper in FIG. 5 in an open state, and FIG. 7 is a cross-sectional view showing the stopper in FIG. It is a sectional view showing a state.

In the second embodiment, as shown in FIG. 5, the stopper 11 is
It is attached to the case body 14 so as to slide left and right, and a portion thereof protrudes from the side surface of the case body 14. The spring 2 is attached so as to press the stopper 11 to the left side.

When the external force 3 acts on this stopper 11, the stopper 11 slides to the right as shown in FIG. When external force 3 is released, the seventh
As shown in the figure, the stopper 11 is slid to the left by the attached spring 2, and the stopper 11 covers the lateral groove 6 and is in a closed state, making it impossible to insert or remove electronic components.

〔Effect of the invention〕

As explained above, the present invention has a stopper held by a spring on the open surface of the L/F case, and when an external force is applied, the stopper slides, allowing electronic components to be inserted or removed, and when the external force is released, the stopper is attached. By having a mechanism in which the stopper slides and the horizontal groove of the case closes using a spring, it is effective to prevent electronic components stored in a stack from being damaged during transportation.

In addition, in the L/F case of the present invention, the aforementioned stopper automatically opens and closes due to its own weight, etc., so when this case is set in the device, the stopper automatically slides, allowing electronic components to be taken in and out, and removed from the device. Even when transporting,
Since the stopper automatically slides with a spring and the horizontal groove of the case closes, the operator does not need to be careful about electronic parts falling off when setting the L/F case into the equipment, and troubles such as work errors are avoided. It has a preventive effect.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a first embodiment of the present invention, FIG. 2 is a front view of the stopper in FIG. 1, and FIGS. 3(a) and (b).
) is a front view and longitudinal sectional view showing the stopper in FIG. 1 in a closed state, FIGS. 4(a) and 4(b) are a front view and longitudinal sectional view showing the stopper in FIG. 1 in an open state, and FIG. The figure is a partially cutaway perspective view of the second embodiment of the present invention, FIG. 6 is a sectional view showing the stopper in FIG. 5 in an open state, and FIG. 7 is a cross-sectional view showing the stopper in FIG. 5 in a closed state. The cross-sectional view shown in Fig. 8 is a conventional L/F.
FIG. 9(a) is a perspective view of an example of the case. (b) is a front view and a longitudinal sectional view of FIG. 8. 1.11...Stopper, 2...Spring, 3...
・External force, 4, 14.24...Case body, 5...Slit, 6...Horizontal groove.

Claims (1)

[Claims] In a lead frame case that has horizontal grooves formed in a laminated manner on two opposing surfaces, and in which electronic components in the form of a lead frame are inserted into the horizontal grooves from the open surface and stored in a laminated manner, the open surface is provided with a spring. A lead frame case characterized by having a stopper that is held and slides in a direction perpendicular to the lateral groove so that the lateral groove can be opened and closed by an external force.