JPH0648911Y2 - Unit case mounting mechanism - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention relates to the invention of a unit case mounting mechanism, in which a unitized case is simplified in the mounting part formed on the main body case part of the reception / amplification device for television co-listening. In addition, it is intended to provide a unit case attachment mechanism that can be properly attached and detached and has excellent operability.

(Industrial field of use) A mechanism for mounting a unit case inside a reception / amplification device for television co-listening.

(Prior Art) A channel-dedicated amplifier, which is a receiving and amplifying device for television co-listening, has been conventionally known. That is, as a countermeasure for a reception failure of television reception, it has been conventionally adopted variously as one of the reception-related devices for improving the reception so as to achieve a high-quality reception as a facility that enables multiple households in the area to receive the same (listen together).

The one conventionally used for mounting a unitized case in a main body case such as a television common listening reception / amplification device is as shown in FIGS. 8 to 10.

That is, in the structure shown in FIG. 8, the mounting plates 22 and 22 are provided opposite to each other on the main body chassis 21 provided in the main body case 20, and the entire surface plate 26 of the unit case 25 is projected from the unit case 25 to make the mounting plate 22
The unit case 25 is inserted into and removed from the main body chassis 21 by the plug plug 24, and each attachment plate 22 is attached to the main body chassis 21 by the fixing means 23.

In FIG. 9, a long screw 28 for mounting is used in place of the mounting plate 22 as described above, and is fixed to the main body chassis 21 by a nut 30.

Further, the one shown in FIG. 10 is one in which the unit cases 31, 32, and 33 of the input circuit section, the amplification section, and the output mixing circuit section are engaged with each other and are fixed by the case cover 34, which is an amplification section. The engaging stage 31a is provided opposite to the intermediate unit case 31, both side unit cases 32 which are an input circuit section and an output mixing circuit section,
33 is provided with receiving stages 32a, 33a and is fixed to the main body chassis 21 by a mounting plate 22 as shown in FIG. 8 or a long screw 28 for mounting as shown in FIG. 9 or an intermediate case 31 as shown in FIG. And the engaging steps 32a or 33a as described above between the two cases 32 and 33 on both sides.
And the receiving stage 31a are connected by a connecting plug 34, and the cases 32 and 33 on both sides are connected to the main body chassis 21 by a connecting plug 35, and the case lid 38 holds the front surface of the intermediate case 31. By fixing the fixing piece 36 and closing the case lid 34, the fixing piece 36 fixes the intermediate case 31 and thus both side cases 32, 33.

(Problems to be solved by the invention) In the above-mentioned conventional one shown in FIG.
22 are installed oppositely, and a large number of mounting screws 27 for these mounting plates 22, or fixing means 23 are adopted, which is complicated and increases the number of steps. Further, it is necessary to form a brim-shaped projection for fixing to the unit case 25 with a screw 27 for mounting, and the mounting space becomes large.

Even though the disadvantages of FIG. 8 are covered in FIG. 9 to some extent, this FIG. 9 requires extra long screws 28 and overlapping nuts 30. In addition, since the unit case 25 itself is fixed by the long screw 28, it needs to be made particularly large, and the mounting space on the main body chassis 10 must be large.
Furthermore, the long screw 28 inserted into the unit case 25 often has an adverse electrical effect on the electric elements or circuits in the case, and the number of mounting steps also increases accordingly.

The one in Fig. 10 has the merit that the number of installation steps is small because it is enough to assemble each unit, but the installation is not always stable just by pressing the intermediate case with the case lid 38, especially with the plug connector. Since the unit cases on both sides are attached, it is difficult to obtain a stable connection. If the middle unit case is removed, both unit cases are likely to come off together. Therefore, in each unit case, the mounting mechanism shown in FIG. 8 or 9 is often used together, and the disadvantages of FIGS. 8 and 9 cannot be solved. Further, it is necessary to separately consider grounding and the like, and it is not easy to accurately obtain the centering of the plug connector provided on the bottom surface side when mounting the intermediate unit case.

"Constitution of device" (Means for solving the problem) A mechanism for attaching a unit case to a case body, which is slidably provided at a bottom corner of one unit case to be fixed to the case body. , A lock portion facing the engagement hole formed in the main body chassis to be attached is formed on the base end side, and the lock portion is slidably provided on the one unit case described above and positioned on the side surface of the one unit case. It has an elastic slide piece provided with an elastic pressure portion on the tip side, and the elastic pressure portion is pressed and deformed between the elastic unit and the other unit case mounted on the main body chassis to engage the other unit case. The unit case holder is characterized in that it is attached and slid so as to be locked in the engagement hole in the main body chassis. Mechanism.

(Operation) By inserting the lock portion into the engagement hole of the main body chassis and sliding the elastic slide piece, the lock portion formed on the proximal end side is locked to the hole edge of the engagement hole and one unit case is attached to the main body. Lock to chassis.

The elastic portion on the front end side of the elastic slide piece that has slid as described above is bonded to the side surface of one unit case, and in this state, the other unit case is attached to engage the other unit case on the main body chassis. To wear. Further, in this way, the elastic pressure portion is sandwiched between both unit cases, and the lock portion is pressure-bonded to the engaging hole portion of the main body chassis, thereby forming a proper grounding relationship with respect to those unit cases.

If the elastic slide piece is improperly mounted, one of the units cannot be mounted, which prevents imperfect fixation and protects the device.

(Embodiment) A concrete embodiment of the present invention will be described with reference to the accompanying drawings. The general structural relationship of the present invention is shown in FIG. Case 5 and input / output unit case unit 1
And the power supply case 5 and the input / output section case unit 1, and the input demultiplexing or frequency converting section unit 2, the amplifying section unit 3 and the output mixing section unit 4 are independent from each other. As a body, it is connected to parallel multiple stations by each plugging method. FIG. 2 shows a circuit having such a configuration as shown in FIG. 2, and the cases of the units 2, 3, and 4 described in the main body case 20 are connected in multiples. The bottom surface of the main body case 20 is provided with input connection ports 16 and 17 and an output connection port 22.

Main body case 20 of each unit 2, 3, 4 between the input / output unit case unit 1 and the power supply case 5 described above.
FIG. 3 and the following figures specifically show the mounting relationship with respect to the case main body as shown in FIG. 3 or FIG.
The main body chassis 10 is attached to the inner surface of the main body chassis 10.
A plurality of unit cases 2, 3 and 4 are attached to the intermediate unit case 3, both side unit cases 2 and 4 are positioned on both sides of the intermediate unit case 3, both side unit cases 2 and 4 and the main body chassis 20 are plug-connected 6 and the intermediate unit case The relationship between the three and the both side unit cases 2 and 4 is such that they are connected by the plug connector 7 is the same as that of FIG. 8 described above. The elastic slide piece 11 is provided on the mounting / dismounting side of the intermediate unit case 3 on the bottom surfaces of the both-side unit cases 2 and 4 in the configuration. That is, the elastic slide piece 11 is as shown in detail in FIG. 7 together with FIG.
A lock portion 8 facing the engagement hole 9 formed in the main body chassis 10 is bent and formed on the base end side, and a mounting / removing surface of the intermediate unit case 3, that is, both side unit cases 2 is formed on the tip end side thereof. The pressure suppression part 12 located on the side of 4 is L
It is formed by bending into a shape. It should be noted that guide projections 13 are formed on both sides of such an elastic slide piece 11, and both side plates 2a or 4a of the unit case 2 or 4 on both sides are formed.
It is engaged with the long hole 15 formed in
Both sides unit case 2 or 4 within the allowable range by
When the elastic slide piece 11 is pulled out from both side unit cases 2 or 4 as shown by the phantom line in FIG. 4, the lock portion 8 on the base end side is completely slid. By adopting a detachable relationship with the engagement hole 9,
By setting the unit case 2 or 4, the lock portion 8 can be accurately inserted into or removed from the engagement hole 9. On the other hand, by setting the unit case 2 or 4 in this way and then sliding the elastic slide piece 11 as shown by the solid line in FIG. 6, the lock portion 8 engages deeply with the inner edge of the engaging hole 9. It is obvious that the lock portion 8 is spring-displaced by the displacement amount σ, and therefore the unit case 2 or 4 cannot be removed from the main body chassis 10 in this locked state. As shown by the phantom line in FIG. 6, the tip portion of the elastic pressure portion 12 protruding and separated from the side surface of the unit case 2 or 4 is located between the opposite side unit cases 2 and 4 as shown in FIGS. It functions as a safety mechanism that is joined to the corners of the bottom surface of the intermediate unit case 3 to be inserted and blocks the insertion, or automatically retracts when the intermediate unit case 3 is strongly pressed in, and the virtual unit shown in FIG. The elastic slide piece 1 set in a linear state and in an open state
Is automatically locked. That is, the elastic slide piece 1 forms a locked state, and both side unit cases 2 and 4 are
Although it is preferable that the intermediate unit case 3 is inserted in a state where the intermediate unit case 3 is fixed to the main body chassis 10, even if the intermediate unit case 3 is accidentally press-fitted in the unlocked state, both sides are automatically inserted. A locked state is formed for the unit cases 2 and 4.

Further, in the mounted state of the intermediate unit case 3 as shown in FIG. 1, the elastic slide piece 11 is tightly crimped to the main body chassis 20 at the base end side, and the tip side is placed in both unit cases 2 or 4 and 3. It is properly pressed against and effectively forms a grounding relationship.

Since the elastic slide piece 1 slides appropriately and is biased by being elastically pressed, it does not need a special space and may be a processed product made of a simple sheet metal or the like.

[Advantage of the Invention] According to the present invention as described above, both side unit cases such as the main body case of the television co-listening reception / amplification device can be accurately fixed and mounted on such a unit case. It is possible to effectively elastically lock an intermediate unit case such as that described above and to form a preferable elastic contact relationship for grounding, which makes it possible to use wall surfaces, pillars, etc. Since the unit cases like those lined up in line are preferably fastened, and of course, one-touch installation is possible without the need for mounting means such as mounting screws, which requires a lot of man-hours, it can be mounted near the top of the mast or mast. It is extremely easy to carry out the loading and unloading operations that must be done at high places, and no special space is required for such mounting. Since it is an easy sheet metal product and brings about the above-mentioned special and various effects, it is a device having a great industrial effect.

[Brief description of drawings]

FIG. 1 shows the technical contents of the present invention. FIG. 1 is a perspective view of a television co-listening reception / amplification device as an example to which the mounting mechanism according to the present invention is applied, and FIG. FIG. 3 is a sectional view of an assembled state of one embodiment according to the present invention, FIG. 4 is a sectional view showing its mounting / dismounting operation state, and FIG. 5 is an elastic slide piece. 6 is a cross-sectional explanatory view showing the mounting / dismounting relationship with respect to the base chassis, FIG. 6 is a partial sectional view showing the working relationship of the elastic slide piece in an enlarged manner, and FIG. 7 is a state in which the elastic slide piece is attached to the unit case. And FIG. 8 to FIG. 10 are cross-sectional explanatory views showing a conventional unit case attachment mechanism, respectively. However, in these drawings, 1 is an input / output section case unit, 2 is an input demultiplexing or frequency conversion section unit which is one of both side unit cases, 3 is an amplification unit unit which is an intermediate unit case, and 4 is both side units. The output mixing unit, which is the other side of the case, 5 is a power supply case, 6,
7 is a plug connection plug, 8 is a lock portion, 9 is an engagement hole, 10 is a main body chassis, 11 is an elastic slide piece, 12 is an elastic pressure portion, 13 is a guide protrusion, 15 is a guide elongated hole, 16 and 17 are Input connection port, 20
Indicates the case body.

Claims (1)

[Scope of utility model registration request] 1. A mechanism for attaching a unit case to a case body, which is slidably provided at a bottom corner portion of one unit case to be fixed to the case body and is formed on a body chassis to be attached. The lock part facing the dowel is formed on the base end side, is slidably provided on the one unit case described above, and the elastic pressure part positioned on the side surface of the one unit case is provided on the tip side. In the main body chassis, there is an elastic slide piece, and the elastic pressure portion is press-fitted and deformed between the elastic unit and the other unit case mounted on the main body chassis to lock the other unit case. A unit case attachment mechanism, characterized in that the unit case attachment mechanism is adapted to be locked in the engagement hole.