JPH0715188Y2 - Closed case open structure - Google Patents

Description

[Detailed Description of the Invention] [Outline] The present invention relates to an opening structure of a close case composed of an upper case and a lower case, and more specifically, to a structure for mechanically opening the upper case, which can be easily opened without damaging the upper case. For the purpose, it is an open structure of a close case, which consists of an upper case and a lower case and is joined airtightly by overlapping the mating surfaces of the peripheral edges,
A push pin that is provided in the peripheral edge of the upper case and slides in the opening direction, and both ends thereof are pivotally supported in a recessed hole provided in the mating surface of the lower case so as to be swingable alternately, and one end of the push pin contacts the tip of the push pin. The push-up lever pushes the push pin to open the upper case. The push-up lever pushes the push-pin to open the upper case.

[Industrial application field]

The present invention relates to an opening structure of a close case composed of an upper case and a lower case, and more particularly to a structure for mechanically opening the close upper case.

For example, a case for accommodating and sealing an electronic circuit includes an upper case and a lower case, and the electronic circuit is put in the lower case and the upper case is hermetically closed. At this time, if a rubber packing made of neoprene or the like is inserted between the upper case and the lower case and screwed for a long period of time, the upper case and the lower case may come into close contact with each other due to the rubber packing. There is a demand for an opening structure that can be easily opened when the upper case needs to be opened.

[Conventional technology]

As shown in the perspective view of FIG. 4 and the side sectional view of the main part of FIG. 5, the conventional open structure of the contact case is such that, in the case of the contact case described above, an upper case 11 and a lower case formed by molding a synthetic resin material. A rubber packing 13 made of neoprene or the like is inserted between the two and 12, and they are screwed together by a mounting screw 14.

Check the electronic circuit 15 in the lower case 12
When removing 14 and opening the upper case 11, the rubber packing 13 sticks and is in close contact because it is screwed together for a long time, and the tip of the driver etc. is inserted between the upper case 11 and the lower case 12 and pry open. And so on.

[Problems to be solved by the device]

However, according to the above structure, the upper case is in close contact and cannot be opened easily. Therefore, if the upper case is opened with a screwdriver or the like, the case or the rubber packing will be damaged, or if the case is opened carefully, it will take time. There was a problem of hanging.

In view of the above problems, it is an object of the present invention to provide an opening structure for a contact case that can be easily opened without damaging the upper case.

[Means for Solving the Problems]

To achieve the above object, in the contact case opening structure of the present invention, both ends of a push pin that is provided at the peripheral edge of the upper case and slides in the opening direction and the recessed holes provided in the mating surface of the lower case are alternately arranged. It consists of a flip-up lever which is pivotally supported and one end of which abuts on the tip of the push pin and the other end of which abuts on the mating surface of the upper case.The push pin is pushed to push the upper case. Configure to open.

[Action]

By pushing one end of the flip-up lever pivotally supported on the lower case with the push pin provided on the upper case, the pushing force is increased by the lever action and the mating surface of the upper case is pushed by the other end of the flip-up lever. It can be opened.

〔Example〕

Hereinafter, the gist of the present invention will be described in detail based on the embodiments shown in the drawings.

As shown in the exploded perspective view of the main part of FIG. 1 and the sectional view of the main part assembly side in FIG. 2, a rubber packing 3 such as neoprene is inserted between the upper case 1 and the lower case 2 and screwed with a mounting screw 4. The upper case 1 has a countersunk hole 1a at the outer side position of the rubber packing 3 on the peripheral mating surface.
And the pin hole 1b communicating therewith is further opened, and the middle of the pin hole 1b is cut out by a lateral hole 1c opened from the side surface. On the other hand, the shaft part that slides in the head part 6a and the pin hole 1b that enter the counterbore 1a
A push pin 6 composed of 6b is provided. The push pin 6 is inserted through the counterbore 1a after inserting the compression spring 7 into the shaft 6b.
A retaining ring 8 is inserted into a groove 6b-1 provided around the middle of 6b. The push pin 6 is held in a state in which the retaining ring 8 is engaged with the upper surface of the lateral hole 1c and is biased upward by the compression spring 7.

The lower case 2 includes a plate-shaped flip-up lever 9 corresponding to the push pin 6 inserted and attached to the upper case 1. That is, a recessed hole 2a for inserting the flip-up lever 9 is opened in the mating surface of the lower case 2, and a shaft hole 2b is formed from the side surface so as to cross the recessed hole 2a.
The flip-up lever 9 is pivotally supported at both ends thereof alternately by a support shaft 10 press-fitted into the shaft hole 2b, for example, a spring pin, so that the lever ratio is about 1: 5. At that time, as shown in FIG. 2, the protrusion 9a at one end of the flip-up lever 9 abuts on the mating surface of the upper case 1, and the other end abuts on the tip of the push pin 6 to move the push pin 6 in the direction of arrow A. The positional relationship is such that the upper case 1 is pushed and opened in the direction of arrow B.

When opening the upper case 1, as shown in the side sectional view of FIG. 3, the mounting screw 4 is removed, the push pin 6 is strongly pressed, and the upper case 1 is pushed open by the flip-up lever 9.

In this way, by setting the push pin on the upper case and the flip-up lever on the lower case, after removing the mounting screw, push the push pin and increase the pushing force by the lever action of the flip-up lever (in this case, Since the lever ratio is about 1: 5, it is 5 times the spring pressure of the compression spring, which can be neglected with a small force to return the push pin, and can be ignored). It can be pushed up and released. Regardless of the amount of pushing up, as long as a gap G is formed on the mating surface as shown in FIG. 3, it can be easily opened for subsequent peeling.

[Effect of device]

As described above in detail, according to the present invention, the contact case can be easily pushed open with a push pin without inserting a tool or the like unlike the conventional case, and the work can be performed in a short time without being scratched. It is very useful for practical use, such as improving the efficiency of and improving the economic efficiency by reusing cases.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of an embodiment according to the present invention, FIG. 2 is a sectional side view of an essential part assembly of FIG. 1, and FIG. 3 is a side sectional view showing a state where the upper case of FIG. 2 is pushed open. FIG. 4 is a perspective view according to the prior art, and FIG. 5 is a side sectional view of a main part of FIG. In the figure, 1 is an upper case, 2 is a lower case, 6 is a push pin, and 9 is a flip-up lever.

Continued Front Page (72) Inventor Shojiro Taniguchi, 1015 Kamiodanaka, Nakahara-ku, Kawasaki, Kanagawa, Fujitsu Limited (72) Inventor, Katsumi Fujii 1015, Uedaka, Nakahara-ku, Kawasaki, Kanagawa (56) Reference Reference Japanese Patent Laid-Open No. Sho 63-190248 (JP, A) Actual Open Sho 60-155088 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An open structure of a close contact case, which comprises an upper case and a lower case and overlaps their mating surfaces at their peripheral edges in an airtight manner, and which comprises a push pin provided on the peripheral edge of the upper case and sliding in the opening direction. , A flip-up lever in which both ends are alternately pivotably supported in a recessed hole provided in the mating surface of the lower case, one end of which abuts against the tip of the push pin and the other end of which abuts against the mating surface of the upper case. And a push-up lever that pushes the upper case open with a flip-up lever.