JPH0731583Y2 - lid - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a lid that is inserted into and fitted to an inner surface of a side wall of a case to be fixed, and is used, for example, as a back lid of a high-frequency distributor or the like.

[Prior art]

Conventionally, as shown in the cross section in FIG. 4, there is a lid made of a metal plate having a spring property, which is inserted into and fixed to the inner surface of the side wall of a substantially rectangular parallelepiped case whose one surface is open. The lid portion inserted into and fitted to the inner surface of the side wall of the case is formed by bending each side of the outer periphery at substantially right angles so that the outer peripheral end face is in the same direction as the insertion direction into the case.

[Problems to be solved by the device]

To install the above-mentioned lid on the inner surface of the side wall of the case, after aligning the outer periphery of the lid with the insertion portion of the case, hit the periphery of the lid with a hammer etc. and make the bent portion of the lid follow the inner surface of the side wall of the case. Has been achieved by. That is, the end surface of the bent portion of the lid is forcibly inserted into and fitted into the inner surface of the side wall of the case. Therefore, the above-described assembling work cannot be inserted only by hand, and there is a problem in that the work time varies and it takes too much time. Further, when removing the lid once assembled in the case, there was no choice but to pry a thin and pointed object between the case and the lid. As described above, if the lid is removed, it is difficult to insert the lid, and in the worst case, the removed lid may be deformed and cannot be reused. The present invention has been made to solve the above problems, and an object of the present invention is to provide a lid made of a metal plate having a spring property that can be easily attached to and detached from a case and can be reused. Is to provide.

[Means for Solving the Problems]

The structure of the device for solving the above-mentioned problems is a lid made of a metal plate having a spring property which is inserted and fitted and fixed to the inner surface of the side wall of the case, and the fitting is slightly larger than the size of the inner surface of the side wall of the case. A groove portion formed in a U-shaped gutter shape around the entire circumference so that the outer peripheral end surface is in a direction opposite to the inserting direction into the case, and the outer peripheral surface of the groove portion contacting the inner surface of the side wall of the case has a predetermined width. And a notch formed at least at one place by cutting out to approximately the bottom surface of the groove.

[Action]

The groove portion is formed in a U-shaped gutter shape around the entire circumference so that the outer peripheral end face is in the direction opposite to the insertion direction into the case with a fitting dimension slightly larger than the inner surface of the side wall of the case. The notch is formed in at least one position by notching the outer peripheral surface of the groove contacting the inner surface of the side wall of the case with a predetermined width to the substantially bottom surface of the groove. Since the outer peripheral end surface of the lid thus configured is in the direction opposite to the insertion direction of the case, it can be easily inserted into the case and can be incorporated. Then, at the position of the notch formed on the lid, a flat tool within the width of the notch is brought into contact with the groove of the lid and the end surface of the case in which the lid is inserted to apply the lever principle. The lid can be easily removed from the case.

【Example】

Hereinafter, the present invention will be described based on specific embodiments. FIG. 1 is a perspective view showing a lid according to the present invention. Further, FIG. 2 is a vertical sectional view showing a state in which the lid is inserted and incorporated in the case. A metal plate having a spring property is used for the lid 10, and a U-shaped gutter-shaped groove portion 16 is formed all around the metal plate. The groove 16 is formed by an inner surface 12, a bottom surface 13 and an outer peripheral surface which continue from the flat surface 11.
Consisting of 14 and. The flat surface 11 to the inner side surface 12 and the bottom surface 13 are formed by drawing, and the bottom surface 13 to the outer peripheral surface 14 are formed by bending. The outer peripheral surface 14 facing the case is
The outer peripheral end face 15 is bent so that the outer peripheral end face 15 is in a direction opposite to the insertion direction when assembled in the case 20 with a fitting dimension slightly larger than the dimension of the side wall inner surface 21 of 20. Further, the lid 10 is formed with a notch 17 at approximately the center of each of the two outer peripheral surfaces 14 facing each other. Next, the operation will be described. First, the case where the lid 10 is incorporated in the case 20 will be described. The lid 10 is inserted into the side wall inner surface 21 of the case 20 in such a direction that the outer peripheral end surface 15 of the lid 10 is opposite to the insertion direction into the case 20. In the initial stage of insertion, the outer peripheral surface 14 of the groove 16 of the lid 10 is the bottom surface.
Since it is a bent surface which is mountain-folded from 13, it is smoothly introduced along the side wall inner surface 21 of the case 20. Next, in the middle of the insertion, the outer peripheral end face 15 is inserted against the spring property so that the outer peripheral end face 15 fits the dimension of the side wall inner face 21 of the case 20. And
At the end of the insertion, the bottom surface 13 of the groove 16 of the lid 10 comes into contact with a predetermined contact surface 22 provided on the case 20, and assembling is completed as shown in FIG. This assembling work is performed by the groove 16 formed around the entire circumference of the lid 10.
It can be inserted by a jig for holding and positioning using the inner surface 12 of the. It can also be inserted by hand. Next, when removing the lid 10 from the case 20,
A description will be given with reference to FIGS. First, as shown in FIG. 3 (a), at the position where the notch 17 of the groove 16 of the lid 10 is provided, the tip of a tool or the like is flat and the tip of a tool or the like whose width is not greater than the width of the notch 17, The groove 16 of the lid is projected in the valley direction from the inner side surface 12 to the bottom surface 13 in the arrow direction. Next, as shown in FIG. 3 (b), the tool or the like is rotated in the direction of the arrow while being thrust as described above to bring the tool or the like into contact with the end surface 23 of the case 20. If the tool or the like is continued to rotate while continuing to rotate, the fixing of the outer peripheral end surface 15 of the lid 10 pressed by the tool or the like and the side wall inner surface 21 of the case 20 is released by the lever principle. Furthermore, if the tool is pushed and the rotation is continued, it is shown in FIG. 3 (c).
The lid 10 is lifted from the case 20 and completely removed from the case 20, as shown in FIG. At this time, since the outer peripheral surface 14 of the groove 16 of the lid 10 is only deformed by a tool or the like against its springiness, the lid 10 removed.
Will immediately return to its original shape. In the present embodiment, a substantially rectangular lid for a substantially rectangular parallelepiped case has been described, but a similar configuration can be made even if the case has a circular opening. Further, the difference between the volume determined in the state where the lid of the present invention is incorporated in the case and the volume determined in the conventional lid is only the volume of the groove portion, which is almost negligible. In addition, the lid of the present invention has good adhesion to the inner surface of the side wall of the case when assembled in the case, and has a high effect of shielding high frequencies.

[Effect of device]

The present invention provides a U-shaped gutter-shaped groove around the entire circumference so that the outer peripheral end surface is in the direction opposite to the direction of insertion into the case with a fitting dimension slightly larger than the inner surface of the side wall of the case. Has a notch formed in at least one position by cutting out the outer peripheral surface of the groove portion that comes into contact with the inner surface of the side wall of the groove to a substantially bottom surface of the groove with a predetermined width, and the lid of the present invention is incorporated into a case. It has a great effect that it is easy to remove and can be reused.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lid according to a specific embodiment of the present invention. FIG. 2 is a vertical cross-sectional view showing a state in which the lid according to the embodiment is inserted and incorporated in a case. FIGS. 3A to 3C are vertical sectional views showing a case where the lid according to the embodiment is removed from the case. FIG. 4 is a vertical cross-sectional view showing a state in which a conventional lid is inserted and incorporated in a case. 10 …… Lid, 12 …… Inside surface, 13 …… Bottom surface 14 …… Outer peripheral surface, 15 …… Outer peripheral end surface, 16 …… Groove 17 …… Notch, 20 …… Case, 21 …… Sidewall inner surface

Claims (1)

[Scope of utility model registration request] 1. A lid made of a metal plate having a spring property that is inserted into and fitted into an inner surface of a side wall of a case to be fixed, and the outer peripheral end surface has a fitting dimension slightly larger than a dimension of an inner surface of the side wall of the case. A groove formed in a U-shaped gutter shape around the entire circumference so as to be in the direction opposite to the insertion direction into the case, and the outer peripheral surface of the groove contacting the inner surface of the side wall of the case with a predetermined width up to the substantially bottom surface of the groove. A lid having a notch formed in at least one place by cutting out.