JP5452298B2 - Large electronic component storage box and home appliances equipped with the same - Google Patents

Description

  The present invention relates to a storage box for large electronic components such as a capacitor, and a home electric appliance including the storage box.

  Conventionally, in a dehumidifier, for example, a large electronic component such as a condenser for driving a fan motor is installed directly on a substrate or attached to a space provided on the side of the substrate. Also in the case of a power supply board used in a washing machine, a unit case is disclosed in which a fan motor driving capacitor is directly attached to the power supply board (see, for example, Patent Document 1).

JP 2008-272196 A

However, the structure of the conventional large electronic component storage box has the following problems.
(1) In a structure in which heavy electronic components such as a condenser for driving a fan motor are directly mounted on a board, they may be dropped or overturned when attached to a product. There is a risk of damage to the substrate, the soldered portion, and the like.
(2) When the mounting portion for the large electronic component is provided on the side of the board, the space for the box is increased accordingly. For this reason, in addition to saving space, when using sheet metal parts to prevent the spread of fire, the number of parts increases and the covering area also increases, which increases costs such as material costs and management costs.
(3) When the space of the box becomes large, it is necessary to take a long cable harness for connecting the substrate and the capacitor.
(4) In recent years, demand for more compact home appliances such as dehumidifiers has become stronger, and the size of large electronic component storage boxes installed in such home appliances has also been reduced, such as reducing the size of the board. It is necessary to respond to the request.

  In view of the above-described problems, the present invention provides a large-sized electronic component storage box and a home appliance provided with the same that do not directly place large-sized electronic components such as a capacitor on a substrate and realize compact and space-saving. The purpose is to do.

Large electronic component storing box according to the present invention includes a lower case which printed circuit board is mounted, an upper case this is a cover of the lower case, and a holder having an electronic component housing section for holding the large electronic components of the condenser or the like, the which the erected Ru supporting leg on the lower case across the printed circuit board provided in the holder, the screw mounting portions for fixing the holders provided in the holder on the lower case, characterized in that it has a It is.

  By configuring in this way, the heavy load of a large electronic component such as a capacitor does not act on the printed circuit board, so that damage to the printed circuit board or the soldered portion can be suppressed even when an impact is applied when dropping or overturning. In addition, large electronic components such as capacitors are held by holders with support legs that are supported on the lower case across the printed circuit board, so the printed circuit board can be made as small as possible, and it is compact and saves space. can do.

It is a perspective view which shows the inside of the dehumidifier which mounts the large sized electronic component storage box in Embodiment 1 of this invention. 2 is a perspective view of a large electronic component storage box in Embodiment 1. FIG. It is a top view which shows a part inside large sized electronic component storage box. It is a side view of a large-sized electronic component storage box. It is an AA cross-section side view of FIG. It is a rear view of a large-sized electronic component storage box. It is a perspective view of a holder holding a capacitor. It is the perspective view which looked at the holder from the back side. It is a perspective view of a printed circuit board. It is a perspective view which shows the state which covered the large sized electronic component storage box with the cover for a fire spread prevention. It is a side view of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing the inside of a dehumidifier 100 equipped with a large electronic component storage box 10 according to Embodiment 1 of the present invention, and shows a state in which a front panel 110 is removed from a dehumidifier body 101.
As shown in FIG. 1, the large electronic component storage box 10 in the present embodiment is installed in the lower part in the main body of the dehumidifier 100. The large electronic component storage box 10 is stored in a case 50 for preventing fire spread made of sheet metal. In FIG. 1, 102 is a blower fan, 103 is a blow grill, 104 is an operation unit / display unit composed of a liquid crystal panel or the like, and 105 is a drawer type drain water tank. In addition, a refrigeration cycle apparatus including a compressor, a condenser, an evaporator, and the like (not shown) is disposed on the back side portion inside the dehumidifier body 101.

  2 is a perspective view of the large electronic component storage box 10, FIG. 3 is a plan view showing a part of the large electronic component storage box 10, FIG. 4 is a side view of the large electronic component storage box 10, and FIG. FIG. 6 is a rear view of the large electronic component storage box 10. 7 is a perspective view of the holder 31 holding the capacitor 30, FIG. 8 is a perspective view of the holder 31 seen from the rear side, and FIG. 9 is a perspective view of the printed circuit board 20.

  The large electronic component storage box 10 is formed in a shape having a substantially rectangular parallelepiped shape in the lower case 11 portion and a convex portion 13 protruding in a substantially right-angled trapezoidal shape from the center portion to the rear end portion of the upper case 12 portion. Has been. The substantially right trapezoidal convex portion 13 covers a portion where a holder for holding a large electronic component such as a capacitor described later is disposed. The outer shape of the large electronic component storage box 10 is matched to the installation space at the lower corner of the dehumidifier body 101 in which it is placed.

  The large electronic component storage box 10 includes a lower case 11 and an upper case 12 that is a lid of the lower case 11 and is formed of ABS resin or the like. A plurality of support ribs 14 are provided in the lower case 11, and a printed circuit board 20 is attached on the support ribs 14. The contour shape of the inner surface of the lower case 11 is formed so as to substantially match the outer shape of the printed circuit board 20. That is, the internal space of the lower case 11 is almost occupied by the size of the printed circuit board 20.

  A capacitor 30 that is a large electronic component is housed in a holder 31. The holder 31 includes a storage unit (electronic component storage unit) 32 for the capacitor 30 and two support legs 33 and 33 supported on the lower case 11 across the printed circuit board 20. The support legs 33 and 33 are inserted between the lower case 11 and the printed circuit board 20 to be supported. For this reason, since the weight load of the capacitor | condenser 30 is not applied to the printed circuit board 20, the impact at the time of a fall or a fall can be reduced.

  Further, as shown in FIG. 3, the support legs 33 and 33 of the holder 31 are fixed by fixing the printed circuit board 20 to the lower case 11 with one screw 25. In other words, the printed circuit board 20 and the screw mounting portion 34 of the holder 31 are fixed together by fastening one screw 25 together. With this configuration, the printed circuit board 20 and the holder 31 can be fixed easily and reliably.

Two electronic component storage portions 32 of the holder 31 are provided in this example, but may be one, or may be two or more. The front capacitor 30a is prevented from being pulled out by locking the front central portion of the front capacitor 30a with a claw 35 provided on the back side of the front end. The rear capacitor 30b is integrally mounted on the back side of the separate substrate 21, and is housed in the electronic component storage portion 31 on the back side. doing. The front capacitor 30a and the rear capacitor 30b are connected to lead wires 41 and 42, respectively, and are connected to the printed circuit board 20 via connectors 43 and 44, respectively.
The holder 31 is formed with harness fixing portions 37 and 38, and the lead wire 42 of the rear capacitor 30b is hung around the harness fixing portions 37 and 38 to prevent fluttering.

  Next, the fire spread prevention cover 50 will be described. 10 is a perspective view showing a state in which the large electronic component storage box 10 is covered with a cover 50 for preventing the spread of fire, FIG. 11 is a side view of FIG. 10, FIG. 12 is a sectional view taken along line BB of FIG. It is CC sectional drawing of.

The fire spread prevention cover 50 is made by sheet metal processing of a thin steel plate (for example, hot dip galvanized steel plate), and the electronic component storage box 10 is inserted from one side opening to cover the whole. . Therefore, the fire spread prevention cover 50 includes a cover main body 51 having one side surface opened and a cover side plate 52 that closes the opening.
With this configuration, it is safe because the fire spread is not limited to the inside.

  Since the large electronic component storage box 10 of the present embodiment is configured as described above, the following effects can be obtained.

(1) Since the capacitor 30 of the large electronic component is housed in the holder 31 and the support legs 33 and 33 of the holder 31 are supported by the lower case 11, the weight load of the capacitor 30 is not applied to the printed circuit board 20. Therefore, the impact at the time of dropping or falling can be reduced, and damage to the printed circuit board 20 or the soldered portion can be suppressed.

(2) Since the holder 31 separates the printed circuit board 20 and holds the capacitor 30, the printed circuit board 20 can be made smaller, and the size and space can be reduced. Moreover, the length of the lead wires 41 and 42 of the capacitor 30 can be shortened due to space saving.

(3) Since the holder 31 is fixed to the lower case 11 together with the printed circuit board 20 with at least one screw 25, the printed circuit board 20 and the holder 31 can be fixed easily and reliably.

(4) The holder 31 is provided with harness fixing portions 37 and 38, and the harness fixing portions 37 and 38 fix the relatively long lead wire 42 of the rear capacitor 30b. Can be suppressed.

(5) Since the entire large-sized electronic component storage box 10 is covered with the cover 50 for preventing fire spread made of sheet metal, there is no other spread of fire.

(6) When a substrate 21 different from the printed circuit board 20 is attached, such as the rear capacitor 30b, the holder 31 stores and holds the capacitor 30b so that the separate substrate 21 is not pressed. By comprising in this way, an extra load does not act on another board | substrate 21 or its soldering part.

(7) Since the holder 31 has the claws 35 and 36 for elastically locking the capacitor 30a and the capacitor 30b with the separate substrate 21, these capacitors can be securely held without dropping off.

(8) By fitting the upper case 12 so as to cover the outer side of the lower case 11, water can be prevented from entering.

(9) Since the large electronic component storage box 10 is installed at a low position such as the lower part of the dehumidifier 100, it is possible to mitigate the impact at the time of the fall.

Embodiment 2. FIG.
In the present embodiment, a holding portion (not shown) for the capacitor 30 is provided in the convex portion 13 of the upper case 12.
With this configuration as well, since the weight load of the capacitor 30 is not applied to the printed circuit board 20, damage to the printed circuit board 20 and the soldered portion due to impact can be suppressed. In addition, compactness and space saving can be realized.

Embodiment 3 FIG.
Although illustration is omitted, in the present embodiment, a recess is formed in the bottom of the lower case 11, and this recess serves as a holding part for the capacitor 30.
This configuration also has the same effect as the second embodiment.

  The large electronic component storage box of the present invention described above can be used not only for a dehumidifier but also for home appliances such as a washing machine, a refrigerator, a washing dryer, an air purifier, and an air conditioner.

  10 Large electronic component storage box, 11 Lower case, 12 Upper case, 13 Convex portion, 14 Support rib, 20 Printed circuit board, 21 Separate substrate, 25 Screw, 30 Capacitor, 31 Holder, 32 Electronic component storage portion, 33 Support leg, 34 Screw mounting part, 35, 36 Claw, 37, 38 Harness fixing part, 41, 42 Lead wire, 43, 44 Connector, 50 Cover for preventing fire spread, 51 Cover body, 52 Cover side plate, 100 Dehumidifier, 101 Dehumidifier Main body, 102 blower fan, 103 blowout grill, 104 operation unit / display unit, 105 drain water tank, 110 front panel.

Claims (11)

Wherein the lower case PCB is mounted, the upper case this is a cover of the lower case, and a holder having an electronic component housing section for holding the large electronic components of capacitors, etc., across the printed circuit board is provided on the holder a support leg that will be erected on the lower case, a large electronic component storing box characterized by having a a screw mounting portion for fixing the holder is provided on the holder to the lower case. The large-sized electronic component storage box according to claim 1 , wherein the screw mounting portion of the holder is fixed together with the printed board by being fastened to the lower case with at least one screw.   3. The large electronic component storage box according to claim 1, wherein the holder has a harness fixing portion for fixing a lead wire of the large electronic component.   The large electronic component storage box according to any one of claims 1 to 3, further comprising a cover for preventing the spread of fire that covers the entire lower case and upper case.   5. The large electronic component storage box according to claim 1, wherein, when a separate substrate is attached to the large electronic component, the holder is configured to store the large electronic component.   6. The large electronic component storage box according to claim 5, wherein the holder has a claw for elastically locking the large electronic component or the separate substrate. The large electronic component storage box according to claim 1, wherein the upper case is fitted so as to cover an outer side of the lower case.   The large electronic component storage box according to claim 1, wherein a holding portion for the large electronic component is provided in a convex portion of the upper case.   The large electronic component storage box according to claim 1, wherein a recess serving as a holding portion for the large electronic component is provided at the bottom of the lower case.   The large-sized electronic component storage box according to any one of claims 1 to 9, wherein the large-sized electronic component storage box is installed at a low position of the home appliance.   A home electric appliance comprising the large electronic component storage box according to claim 1.

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