JP3931784B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic apparatus provided with a cover pivotally supported by a container so as to be rotatable between a position where an opening formed in the container is closed and a position where the opening is opened.
[0002]
[Prior art]
Conventionally, a battery is attached to an electronic device having a cover that opens and closes when a setting of various switches arranged inside the body is changed by operating from the outside, or a battery holder arranged inside the body. Various electronic devices including a cover that opens and closes when attaching and detaching are proposed (for example, Patent Document 1).
[0003]
In this type of electronic apparatus, as shown in FIG. 7, the bearing hole 22 formed in the pivotal support portion 21 of the synthetic resin cover 20 is projected from the inner peripheral edge of the opening 11 of the synthetic resin container 10. The cover 20 is rotatably held with respect to the container body 10 by fitting the rotary shaft 12 thus made. Here, the pivoting portion 21 of the cover 20 is formed with a mounting slit 23 that communicates with the bearing hole 22 and allows the rotary shaft 12 to be introduced into the bearing hole 22. The attachment slit 23 is open on the lower surface side in FIG. 7 and is formed narrower than the inner diameter of the bearing hole 22.
[0004]
[Patent Document 1]
JP-A-8-329918 (2nd to 3rd pages, FIG. 1, FIG. 2, FIG. 3)
[0005]
[Problems to be solved by the invention]
By the way, in the said conventional structure, since a pair of rotating shaft 12 which hold | maintains the cover 20 rotatably is provided in the container 10, the position and cover which the cover 20 closes the opening part 11 centering on the rotating shaft 12 is open | released. It can be freely rotated between the position and the position. However, when a force in the opening direction acts on the cover 20 in a state where the cover 20 opens the opening 11 and the rotation of the cover 20 in the opening direction is restricted by the container body 10, the rotating shaft 12 is broken, The cover 20 could not be attached to the body 10.
[0006]
The present invention has been made in view of the above reasons, and an object of the present invention is to provide an electronic device that can prevent a rotating shaft that is provided in a container body and that rotatably holds a cover from breaking. is there.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 is configured so as to be rotatable between a container body and a position where the opening formed in the container is closed and a position where the opening is opened. And a cover hole is formed in the cover, into which a rotating shaft projecting from the inner peripheral edge of the opening of the body is fitted, and the cover opens the opening and opens in the opening direction. An escape slit is formed in communication with the bearing hole for allowing the rotary shaft to escape from the bearing hole when a force in the opening direction is applied to the cover in a state where the rotation of the cover to the container is restricted . The mounting slit is formed so that the rotation shaft communicates with the bearing hole and can be introduced into the bearing hole from the direction orthogonal to the axial direction, and the escape slit and the mounting slit are provided separately. The cover opens the opening and how to open When the force in the opening direction is applied to the cover in a state where the rotation of the cover is restricted by the container, the rotating shaft is detached from the cover through the escape slit (that is, the cover is detached from the container). Since the rotation shaft can be prevented from breaking, and the cover is formed with a mounting slit that communicates with the bearing hole and allows the rotation shaft to be introduced into the bearing hole from a direction orthogonal to the axial direction. It can be easily attached even after the cover is removed from the body.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the present embodiment, a programmable controller that performs sequence control of a device to be controlled based on a sequence program is illustrated as an example of an electronic device. However, the technical idea of the present invention can also be applied to electronic devices other than a programmable controller.
[0010]
The programmable controller of the present embodiment includes a memory (not shown) that stores and holds a sequence program and data created by a user in the container 10 shown in FIG. 2, and a microprocessor (not shown) that operates according to the sequence program. And the like, and an operation unit 18 having a plurality of switches 18a for performing various settings and a display unit 19 for performing various displays are provided on the front side of the container 10.
[0011]
In addition, a battery holder (not shown) that detachably holds a backup battery (not shown) that maintains power supply to the memory and the like even when power supply from an external power supply is stopped in the container 10. Is formed in a portion corresponding to the battery holder on the upper wall of the vessel body 10, and an opening 11 having a rectangular shape is formed.
[0012]
Further, the programmable controller of the present embodiment has a rectangular cover 20 that is pivotally supported by the body 10 so as to be rotatable between a position where the opening 11 is closed and a position where the opening 11 is opened (see FIGS. 1 and 4). And the battery can be attached and detached by rotating the cover 20 to a position where the cover 20 opens the opening 11. The container 10 and the cover 20 are each formed of a synthetic resin.
[0013]
Three ribs 13 (see FIGS. 2, 3, and 5) for preventing the cover 20 from falling into the body 10 while closing the opening 11 from the inner peripheral edge of the opening 11 of the body 10. ) Is projected. Further, the cover 20 is formed with a pivotal support portion 21 at one end portion, and can be engaged with the lower surface of the peripheral portion of the opening portion 11 on the upper wall of the vessel 10 from both side portions of the other end portion of the cover 20. A locking convex portion 25 (see FIG. 4) is provided so that the locking convex portion 25 is engaged with the lower surface of the peripheral portion of the opening portion 11 while the opening portion 11 is closed by the cover 20. ing. On the other hand, on the upper surface of the upper wall of the vessel body 10, there is an operation recess 14 communicating with the opening 11 at a position near the other end of the cover 20 when the opening 11 is closed by the cover 20. The engagement state between the body 10 and the locking convex portion 25 is formed by inserting a finger or a jig into the operation concave portion 14 and applying a force in the direction in which the cover 20 opens the opening portion 11. Is released so that the cover 20 can be rotated. Further, the other end of the cover 20 is formed with a recess 26 that communicates with the operation recess 14 in a state in which the opening 11 is closed.
[0014]
By the way, as shown in FIG. 1, a pair of columnar rotating shafts 12, 12 project from the inner peripheral edge of the opening 11 to the container body 10. On the other hand, as described above, the cover 20 has the pivot portion 21 formed at one end, and the pivot portion 21 of the cover 20 has a bearing hole 22 into which the rotary shaft 12 is fitted. Here, the pivot portion 21 of the cover 20 is formed with a mounting slit 23 that communicates with the bearing hole 22 and allows the rotary shaft 12 to be introduced into the bearing hole 22 from a direction orthogonal to the axial direction. Further, as shown in FIG. 6A, the cover 20 opens the opening 11 and the surface of the cover 20 abuts against the body 10 as shown in FIG. 6), when the force of the opening direction is applied to the cover 20 in a state where the rotation of the cover 20 in the counterclockwise direction) in FIG. An escape slit 24 for escaping from the bearing hole 22 is formed in communication with the bearing hole 22. The mounting slit 23 is open on the lower surface side in FIG. 1, and is formed narrower than the inner diameter of the bearing hole 22 and the outer diameter of the rotary shaft 12, and the escape slit 24 is formed on the upper surface in FIG. The side is open, and is formed narrower than the inner diameter of the bearing hole 22 and the outer diameter of the rotating shaft 12.
[0015]
Thus, in this embodiment, when the cover 20 opens the opening 11 and the force in the opening direction acts on the cover 20 in a state where the rotation of the cover 20 in the opening direction is restricted by the container body 10, the rotating shaft 12 is removed from the pivotal support 21 through the escape slit 24 (that is, the cover 20 is detached from the body 10), so that the rotating shaft 12 can be prevented from being broken. In addition, the pivot portion 21 of the cover 20 is formed with a mounting slit 23 that communicates with the bearing hole 22 and allows the rotary shaft 12 to be introduced into the bearing hole 22 from a direction orthogonal to the axial direction. It can be easily attached even after it is detached from the body 10.
[0016]
In addition, although this embodiment demonstrated the cover 20 which can be rotated between the position which closes the opening part 11 formed in the site | part corresponding to a battery holder in the container 10, and the position which open | release, The above-described structure may be employed for a cover that opens and closes when setting a switch provided on the.
[0017]
【The invention's effect】
The invention of claim 1 includes a vessel and a cover pivotally supported by the vessel so as to be rotatable between a position where the opening formed in the vessel is closed and a position where the opening is opened. A bearing hole is formed in the pivotal support portion of the cover, into which a rotating shaft projecting from the inner peripheral edge of the opening of the body is fitted. The cover opens the opening and rotates the cover in the opening direction. An escape slit is formed to communicate with the bearing hole so that the rotating shaft escapes from the bearing hole when a force in the opening direction is applied to the cover in a state where the movement is restricted by the body. When a force in the opening direction is applied to the cover in a state where the opening is opened and the rotation of the cover in the opening direction is restricted by the container, the rotating shaft is detached from the cover through the escape slit (that is, the cover is removed from the container). The rotation axis is broken. There is an effect that it is possible to prevent the, also, the cover, since mounting slits to be introduced from the direction perpendicular to the rotation axis communicates with the bearing hole in the axial direction into the bearing hole is formed, There is an effect that it can be easily attached even after the cover is removed from the body.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a main part of a programmable controller showing an embodiment.
2A is a schematic external perspective view with a cover removed, and FIG. 2B is an enlarged view of a main part of FIG.
FIG. 3 is a schematic cross-sectional view of the relevant part showing the same as above, with the cover removed.
4A and 4B show a cover used for the above, wherein FIG. 4A is a schematic front view, and FIG. 4B is a schematic side view.
5A is a schematic cross-sectional view of a main part in a state where an opening is closed by a cover; FIG. 5B is a side cross-sectional view of a main part in a state where the opening is closed by a cover; It is a principal part expanded sectional view of the state which closed the opening part with the cover.
FIG. 6 is an explanatory diagram of a main part of the above.
FIG. 7 is an explanatory diagram of relevant parts showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Container 11 Opening part 12 Rotating shaft 20 Cover 21 Pivoting part 22 Bearing hole 23 Slit for attachment 24 Slit for escape

Claims (1)

A container, and a cover pivotally supported by the container so as to be rotatable between a position where the opening formed in the container is closed and a position where the opening is opened. In a state where a bearing hole into which a rotating shaft protruding from the inner peripheral edge of the body opening is fitted is formed, the cover opens the opening, and the rotation of the cover in the opening direction is restricted by the body. An escape slit that allows the rotary shaft to escape from the bearing hole when a force in the opening direction is applied to the cover is formed in communication with the bearing hole, and the rotary shaft extends from the direction orthogonal to the axial direction. An electronic device characterized in that a mounting slit that can be introduced into a bearing hole is formed, and an escape slit and a mounting slit are provided separately .

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