JPH0334937Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention consists of a circuit unit equipped with an electric circuit, an optical circuit, etc., and a storage case to house it, and is mainly installed in a home (indoors). The present invention relates to in-home equipment, and particularly to the structure of a storage case.

This type of in-home device includes a type of repeater-like device, and a device that has a function of converting an electrical signal into an optical signal and outputting it, and various other functions. As shown in FIG. 4, the home device 10 is installed on a shelf 4 provided in the rack 1, or as shown in FIG. There are many. 4A is a front view of the rack 1, and B is a right side view of the rack 1. Reference numerals 2 and 3 are a pair of left and right support columns, 5 is a back wall of the rack, and 8 is an outside line ( Enter/
output lines, power lines, optical cables, etc.). FIG. 5 is a side view of the table 7 placed adjacent to the wall 6, and reference numeral 8 indicates an outside line connected to the in-home device 10. In general, after the in-home device 10 is installed on the shelf 4 of the rack 1 or on the table and the outside line 8 is connected, it is necessary to make adjustments such as its functions. For this adjustment operation, it is necessary to remove the case cover that constitutes the in-home device 10.

[Conventional technology]

FIG. 3 is a diagram showing the structure of conventional home equipment.
A is a side view of the in-home device 20 (however, storage case 2
2 is a cross-sectional view), B is a rear view seen from the direction of arrow A in A. When facing FIG. 3A, the left hand side will be referred to as the front side of the device 20 and other parts, and the right hand side will be referred to as the rear side, and when facing from the front side to the rear side, the left hand side will be referred to as the left side, and the right hand side will be referred to as the right side. do.

This in-home device 20 is composed of a circuit unit 21 equipped with an electric circuit, an optical circuit, etc., and a storage case 22 for storing and fixing the circuit unit 21. On the front surface of the circuit unit 21, knobs 21a and 21b for adjusting a changeover switch, variable resistance, etc. are provided. The storage case 22 consists of a case body 23 and a case cover 24 that is attached to the case body 23 from the front. The case body 23 includes a bottom plate 23a and a bottom plate 2.
The circuit unit 21 is arranged and fixed on the bottom plate 23a, rubber legs 23c are fixedly provided at the four corners of the lower surface of the bottom plate 23a, and an external line connecting connector 23d is fixed on the back plate 23b. will be placed. And this connector 2
An outside line (not shown, see reference numeral 8 in FIGS. 4 and 5) is connected to 3d. The case cover 24 includes a front plate 24a, a ceiling plate 24b, a left side plate 24c, and a right side plate 24d, and has an open bottom and back surface. Front plate 24 of case cover 24
a L-shaped fitting 25 facing the bent part 24e at the lower end
is fixed to the front plate 24a, forming a female engaging portion 26. By fitting the front edge (male engaging part) 23e of the bottom plate 23a into the female engaging part 26, the case body 23 and the front part of the case cover 24 are fixed in the vertical direction. The inner surfaces of the left and right side plates 24c and 24d of the case cover 24 are connected to the case body 2.
The case body 23 and the case cover 24 are fixed to each other in the left-right direction by contacting the left and right side surfaces of the bottom plate 23a and the back plate 23b of No. 3. Ceiling board 2
L-shaped metal fittings 27A and 27B facing the upper right and left corners of the back plate 23b are fixed on the inner surface of the rear portion of the rear plate 4b. By fixing these L-shaped fittings 27A, 27B to the back plate 23b with setscrews 28, the case body 23 and the case cover 24 are fixed to each other in the front-rear direction and the up-down direction.
The storage case 22 is constructed in this way, and when operating the adjustment knobs 21a and 21b, loosen the setscrews 28 and remove them, and then pull out the case cover 24 forward (in the direction of arrow B) to remove it. There is a need.

Next, as another conventional example, although not shown, the front plate 24a of the conventional example (FIG. 3) is provided with an insertion hole for inserting an instrument, etc. for operating the adjustment knobs 21a, 21b. , another front cover is arranged on the front surface of the front plate 24a at a predetermined interval, the lower end of this front cover and the lower end of the front plate 24a are connected via a hinge, and the upper end of the front cover is Some are configured to be detachably fixed to the upper end of the face plate 24a via a magnet or the like. In this case, when adjusting the adjustment knob, it is sufficient to simply pivot the front cover forward about the hinge and fold it down, and there is no need to remove the case cover, but the structure becomes complicated.

[Problem that the invention attempts to solve]

In the conventional example (FIG. 3), when removing the case cover 24, in order to remove the set screw 28, it is necessary to turn the device 20 in half so that the back side is on the front side. For this reason, the back plate 23
Since an unreasonable tensile force is applied to the external line connected to the external line connecting connector 23d of b (see reference numeral 8 in Figures 4 and 5), there is a risk of damage to the external line, and especially undesirable results for optical cables. Furthermore, since it is necessary to half-turn the device 20 and return it to its original position before and after adjustment, there is a problem that the adjustment work is time-consuming. 27A, 27
In order to allow the circuit unit 21 to pass through, notches 21c, 21 extending in the front and back direction are provided on both left and right shoulders of the circuit unit 21.
d, and the mounting volume of the circuit unit 21 is reduced accordingly. In addition, the above-mentioned other conventional example has the advantage that there is no need to remove the top cover during adjustment, but it requires the provision of another front cover, which complicates the structure and increases costs.
Since it is necessary to centrally arrange the adjustment parts of the circuit unit on the front side, there is a problem that this cannot be applied when the circuit unit structure can be moved up and down. The present invention was devised for the purpose of solving these problems.

[Means for solving problems]

The present invention provides an in-home device structure that solves the above-mentioned problems, and as a means thereof, according to the present invention, a circuit unit equipped with an electric circuit, an optical circuit, etc. is housed in a storage case, and the storage case has a case body having a bottom plate and a back plate,
The case includes a case cover, which has a front panel, a ceiling panel, and left and right side panels, and has an open bottom and back surface, and is removably attached to the case body from the front side so as to cover the front surface and both left and right sides of the case body. In an in-home device that is fixed to the main body in the vertical direction, the horizontal direction, and the rear direction, a through guide hole is formed in at least one place near the upper edge of the case main body back plate, and the back plate corresponds to the guide hole. An engaging knob having an upwardly protruding piece is disposed on the outer surface of the holder, and a locking leaf spring is disposed on the inner surface opposite to the engaging knob, and both of these are passed through the guide hole and moved in the vertical direction along the guide hole. At a position above the engaging knob, the upwardly protruding piece engages with a forward fixing member disposed on the lower surface of the case cover ceiling plate, and the locking leaf spring engaging with a notch formed in the upper edge of the back plate above the guide hole to elastically fix the engagement knob in the upper position, and in the lower position of the engagement knob;
There is provided an in-home device structure configured such that the upwardly protruding piece detaches from the front fixing member of the case cover to release the case cover in the front direction.

[Effect]

The above home device structure allows you to easily attach and remove the case cover by extending your hand from the front side of the home device to the back and moving the engagement knob up and down, without having to move the home device as it was originally installed. Furthermore, by providing the engaging knob, there is no need to provide cutouts on both the left and right shoulders of the circuit unit, so it is possible to prevent the mounting volume of the circuit unit from being reduced.

〔Example〕

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

FIG. 1 is a diagram showing an embodiment of the in-home device structure of the present invention, in which A is a side view of the in-home device 30 (however, the storage case 22 is shown in cross section), and B is an arrow A in A.
Rear view from the side, case cover 24
and a rear view with the engagement knob 31 removed, and FIG. 2 is an enlarged detailed view of the attachment part of the engagement knob 32 in FIG. This is a rear view, when facing FIG. Let's call the right-hand side the right side. In addition, in these figures, the third
The same or equivalent parts as those in the figure (conventional example) are denoted by the same reference numerals.

Therefore, this home device 30 is composed of a circuit unit 21 equipped with an electric circuit, an optical circuit, etc., and a storage case 22 for storing and fixing this circuit unit 21. Adjustment knobs 21a and 21b for adjustment parts such as switches and resistors are provided. The storage case 22 consists of a case body 23 and a case cover 24 that is attached to the case body 23 from the front. The case body 23 is composed of a bottom plate 23a and a back plate 23b standing upright from the rear end of the bottom plate 23a.The circuit unit 21 is arranged and fixed on the bottom plate 23a, and rubber legs 23c are fixed to the four corners of the lower surface of the bottom plate 23a. Furthermore, an external line connection connector 23d is provided on the back plate 23b. Then, external lines such as input/output lines, power lines, and optical cables (not shown, see reference numeral 8 in Figs. 4 and 5) are connected to the connector 23d.
d and the circuit unit 21 are also electrically connected to each other. The case cover 24 has a front panel 24a, a ceiling panel 24b, a left panel 24c, and a right panel 24d, and has an open bottom and back surface, and covers the front surface and both left and right side surfaces of the case body 23. It is attached to the case body 23 from the front side. An L-shaped metal fitting 25 is attached to the front plate 24 at a predetermined interval, facing the bent portion 24e at the lower end of the front plate 24a of the case cover 24.
4a, and the bent portion 24e and the L-shaped fitting 25 form a female engaging portion 26. By fitting the front end edge (male engaging part) 23e of the bottom plate 23a into the female engaging part 26, the case cover 24 is fixed to the case body 23 in the rear direction and the front part in the vertical direction. Ru. case cover 24
The case body 23 and the case cover 24 are fixed to each other in the left-right direction by the respective inner surfaces of the left and right side plates 24c and 24d coming into contact with the left and right end surfaces of the bottom plate 23a and the back plate 23b of the case body 23. In this way, this embodiment is similar to the prior art example (FIG. 3) described above with respect to the configuration of each part described above. The feature of this embodiment is that engaging knobs 31 that can be slid in the vertical direction are provided on the left and right upper portions of the back plate 23b of the case body 23, and a front fixing member 36 is provided on the rear part of the ceiling plate 24b of the case cover 24. This is because we have established the following. As clearly shown in FIGS. 1 and 2, the engagement knob 31 has an upwardly protruding piece 31a and an operating portion 31b.
The fitting portion 31c is formed into a deformed L-shape from the back plate 23b and the fitting portion 31c. (in the direction of arrow C). As clearly shown in FIG. 2, a locking plate spring 32 is disposed inside the back plate 23b facing the engagement knob 31, and is fixed to the fitting portion 31c by a fixing screw 33. . As a result, the engagement knob 31 moves the plate spring 3 onto the back plate 23b.
2 along with the through guide hole 34 so as to be slidable in the vertical direction (in the direction of arrow C). Leaf spring 32
As clearly shown in FIG. 2, a protrusion 32a is provided, the upper end of which is bent and protrudes toward the back plate 23b. Installed in abutment.
A front fixing member 36 is fixed to the lower surface of the ceiling plate 24b of the case cover 24 in correspondence with the upwardly protruding piece 31a of the engagement knob 31. As shown in FIG. 2, this front fixing member 36 has a fixing portion 36a.
and the engaging portion 36b are formed to have a substantially right-angled cross-sectional shape. Further, as clearly shown in FIG. 1C, notches 35 are formed at the left and right corners of the upper edge of the back plate 23b, corresponding to the guide holes 34, respectively. This notch 35 corresponds to the protrusion 3 of the above-mentioned locking leaf spring 32.
2a, and also serves to allow the front fixing member 36 fixed to the cover ceiling plate 24b to pass through when the case cover 24 is attached or detached. At this time, in order to fix the rear part of the case cover 24 in the vertical direction, an engaging part 37 that can be engaged with each other from the front side is provided at the center part in the left and right direction at the rear part of the ceiling plate 24b of the case cover 24 (see FIG. ). Engagement part 3
7 consists of a pair of Z-shaped metal fittings 37a and 37b,
37a is on the lower surface of the ceiling board 24b, and 37b
are fixed to the upper surface of the circuit unit 21, respectively.

Now, in this embodiment configured as described above, when removing the case cover 24 from the case body 23, the hand is extended from the front side to the back side and the engaging knob 3 is removed.
1, and push down the engagement knob 31 to the position shown by the solid line in FIG. 2 (lower position), and then move the case cover 24 forward (in the direction of arrow B).
It can be easily removed by pulling it out. Also,
When attaching the case cover 24 to the case body 23, lower the engagement knob 31 in advance to the lower position shown by the solid line in FIG. direction)
When the front plate 24a is pushed in to the position where it abuts the front edge 23e of the bottom plate 23a of the case body 23, the front edge 23e engages with the female engagement portion 26, and the engagement portion 37 of the top plate 24b also engages. At the same time, the case cover 24 is fixed in the vertical, horizontal, and rearward directions.Next, when the engagement knob 31 is pushed up to the upper position shown by the two-dot chain line 31-1 in FIG. The upward protruding piece 31a engages with the engaging portion 36b of the front fixing member 36, and the case cover 24 is fixed in the front direction, so that the case body 2
3 is completely fixed. In addition, the engagement knob 31 is
At the upper position shown by the two-dot chain line 31-1 in FIG. , elastically fixed. In this way, in this embodiment, the case cover 24 can be easily attached and detached without moving the case body 23 in which the circuit unit 21 is housed and fixed from the initial installation state, and the case cover 24 can be easily attached and detached. It is possible to eliminate the need to provide longitudinal notches (21c, 21d in FIG. 3) on both left and right shoulders of the circuit unit 21 as shown in FIG.

[Effect of idea]

As explained above, according to the present invention, by extending the hand from the front side of the device and moving the engagement knob provided on the back of the device up and down, the device can be moved from the initial state of installation. Since the case cover can be easily attached and detached, it is possible to prevent excessive tensile force from being applied to the external wires, improving workability such as function adjustment and maintenance inspection. Since it is not necessary to provide a notch extending in the front-rear direction on the shoulder, significant effects such as preventing the mounting volume of the circuit unit from being reduced can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the in-home device structure of the present invention, in which A is a side view of the in-home device 30 (however, the storage case 22 is shown in cross section), and B is an arrow A in A.
Rear view from the side, case cover 24
and a rear view with the engagement knob 31 removed, and FIG. 2 is an enlarged detailed view of the attachment part of the engagement knob 31 in FIG. The rear view and FIG. 3 are diagrams showing the structure of a conventional in-home device, where A is a side view of the in-home device 20 (however, the storage case 22 is shown in cross section), and B is a rear view seen from the direction of arrow A in A. 4 and 5 are diagrams showing the installed state of the in-home device 10, in which FIG. 4A is a front view of the rack 1, FIG. 4B is a right side view of FIG. 4A, and FIG. The figure shows a side view of a table 7 placed adjacent to a wall 6. 30... In-home device related to the present invention, 21... Circuit unit, 21a, 21b... Adjustment knob,
22...Storage case, 23...Case body, 23
a...Bottom plate, 23b...Back plate, 23d...External line connection line connector, 23e...Bottom plate front end line (male engagement part), 24...Case cover, 24a...Front plate, 24b...Ceiling plate , 24c...Left side plate, 24
d... Right side plate, 24e... Bent part, 26... Female engagement part, 31, 31-1... Engagement knob, 31
a...Upward protruding piece, 31b...Operation section, 31c
... Fitting portion, 32 ... Locking plate spring, 32a, 3
2a-1...Protrusion, 33...Fixing screw, 34
...Through guide hole, 35...Notch, 36...
Front fixing member, 36a...Fixing portion, 36b...
Engagement part, 37...Engagement part, 37a, 37b...Z
shaped metal fittings.

Claims (1)

[Scope of utility model registration request] A circuit unit including an electric circuit, an optical circuit, etc. is housed in a storage case, and the storage case has a case body having a bottom plate and a back plate, and a front plate, a ceiling plate, and left and right side plates. A case cover, which has an open bottom and back surface and is removably attached to the case body from the front and covers the front and left and right sides of the case body, is attached to the case body in the vertical, horizontal, and rearward directions. In the in-home device fixed to the case body, the back plate of the case body has a through guide hole formed in at least one location near the upper edge, and an upwardly protruding piece is provided on the outer surface of the back plate corresponding to the guide hole. An engagement knob is disposed, and an engagement plate spring is disposed on the inner surface opposite to the engagement knob, and both of these are connected through the guide hole so as to be slidable in the vertical direction along the guide hole. At the upper position of the fitting knob, the upwardly protruding piece engages with a forward fixing member disposed on the lower surface of the case cover ceiling plate, and the locking leaf spring is attached to the upper edge of the back plate above the guide hole. The engaging knob is elastically fixed in the upper position by engaging with the formed notch, and the upwardly protruding piece is detached from the front fixing member of the case cover when the engaging knob is in the lower position. An in-home device structure characterized in that the case cover is configured to be opened in a forward direction.