JP2019145695A - Unit and unit mounting structure - Google Patents

Abstract

To provide a structure in which over-tightening of a packing interposed between a housing and a unit can be avoided without using spacers when installing the unit to cover an opening provided in the housing of an electrical equipment storage box.SOLUTION: A unit 1 attached so as to cover an opening provided in a housing 3 of an electrical equipment storage box is a unit including a projecting portion 11 projecting toward the housing so that a compression amount of a packing 4 interposed between the unit and the housing can be limited.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a unit attached to an electric equipment storage box and a unit mounting structure.

  It is known to provide a packing around the opening when the unit is attached to the opening of the housing. This packing plays a role of closing the gap between the housing and the unit when the unit is fastened and fixed with bolts. However, if the unit is attached too tightly, the packing may be crushed and the repulsive force may be reduced, and the waterproof performance may not be maintained. Therefore, as described in Patent Document 1, in order to secure a crushing allowance for the packing, a spacer for restricting tightening is provided.

JP 2001-007582 A

  However, since a spacer made of a separate member is provided around the screws and bolts, it is necessary to secure the width for attaching the spacer. Depending on the installation location, the width of the packing may be narrowed and the waterproof performance may be reduced. It was. In addition, since a separate spacer is required, the number of parts is increased and workability may be reduced.

  The inventor of the present case tried to solve the problem by diligently examining this point. The object of the present invention is to avoid over-tightening the packing interposed between the housing and the unit without using a spacer when mounting the unit so as to cover the opening provided in the housing of the electrical equipment storage box. It is to make it a simple structure.

  In order to solve the above problems, the unit is mounted so as to cover the opening provided in the housing of the electrical equipment storage box, and the compression amount of the packing interposed between the unit and the housing can be limited. The unit is provided with a protruding portion protruding toward the casing.

  In addition, it is preferable that the protruding portion protrudes on the outer peripheral side of the packing interposed between the unit and the housing.

  Moreover, it is preferable to set it as the structure in which the protrusion part was provided with the strip | belt-shaped contact surface.

  Moreover, it is preferable to set it as the structure which provided the notch which can drain in the strip | belt-shaped contact surface.

  Moreover, it is preferable to set it as the structure which provided the groove part which can be drained between a strip | belt-shaped contact surface and packing.

  Moreover, it is preferable to set it as the structure which provided the protrusion part in the louver member which suppresses the penetration | invasion of a foreign material.

  In the present invention, when the unit is mounted so as to cover the opening provided in the housing of the electrical equipment storage box, it is possible to avoid overtightening of the packing interposed between the housing and the unit without using a spacer. It becomes possible.

It is the disassembled perspective view which decomposed | disassembled the electric equipment storage box in embodiment into the housing | casing and the unit. It is a disassembled perspective view of the unit of embodiment. However, the top surface portion of the housing is also shown. It is the perspective view which looked at the main body base of an embodiment from the upper part. It is a perspective view which shows the state which turned the main body base shown in FIG. 3 upside down. It is a perspective view which shows the state which fixed the attachment metal fitting to the main body base. It is a perspective view of a mounting bracket. It is a perspective view of a louver member. It is a figure which shows the example of arrangement | positioning of a louver member. It is a perspective view which shows the state which fixed the attachment metal fitting and the louver member to the main body base. It is a perspective view which shows the state which fixed the attachment metal fitting, the louver member, and the ventilation fan to the main body base. It is a perspective view of a unit. It is the XII-XII end elevation of FIG. It is the elements on larger scale of FIG.

  The form for implementing this invention is shown below. The unit 1 of the present embodiment is a unit 1 that is attached so as to cover the opening 31 provided in the housing 3 of the electric device storage box 10. Moreover, it is the unit 1 provided with the protrusion part 11 which protruded in the housing | casing side so that the compression amount of the packing 4 interposed between the unit 1 and the housing | casing 3 can be restrict | limited. For this reason, when attaching the unit 1 so that the opening provided in the housing | casing 3 of the electrical equipment storage box 10 may be covered, the packing 4 interposed between the housing | casing 3 and the unit 1 without using a spacer is overtightened. Can be avoided. Therefore, the appropriate repulsive force of the packing 4 can be ensured and waterproof performance can be maintained.

  Hereinafter, the ventilation fan unit will be described as an example of the unit 1. The unit 1 may be another type of unit, but is preferably a heat countermeasure unit such as a louver unit, a heat exchanger unit, or a cooler unit.

  The unit 1 of the embodiment is connected to the housing 3 to form an electric device storage box 10. As understood from FIG. 1, the top surface 32 of the housing 3 includes an opening 31, and the unit 1 is attached so as to cover the opening 31.

  As can be understood from FIG. 2, the unit 1 of the embodiment includes a main body base 12, a ventilation fan 13 housed in the main body base 12, a louver member 14 attached to the periphery of the main body base 12, and a louver member 14. And a cover 15 that covers the ventilation fan 13 and the main body base 12. The cover 15 is placed on a cover support portion 24 attached to the main body base 12.

  As understood from FIGS. 3 and 4, the main body base 12 includes a side surface portion 21 having a substantially rectangular shape in plan view, and a bottom surface portion that forms a surface parallel to the mounting surface of the housing 3. 22 is provided. The packing 4 is disposed so as to contact the surface of the bottom plate 23 constituting the bottom surface portion 22 on the side of the housing 3. A plurality of mounting bolts 17 are fixed to the bottom surface portion 22, and these mounting bolts 17 are used when the unit 1 is fixed to the housing 3. When the mounting bolt 17 is fixed to the bottom plate 23, the mounting bolt 17 does not rotate together even when trying to screw the nut from the inside of the housing 3, so that the screwing becomes easy.

  As shown in FIG. 5, the main body base 12 is used with a mounting bracket 16 attached thereto. The mounting bracket 16 is formed by bending a single plate as shown in FIG. More specifically, one end of the mounting bracket 16 is formed to be the cover support portion 24, and the other end is bent to be the ventilation fan support portion 25 that supports the ventilation fan 13. In addition, the ventilation fan support part 25 is provided with a ventilation fan fixing hole 26 that is used when the ventilation fan 13 is fixed.

  Next, the louver member 14 attached to the main body base 12 will be described. The louver member 14 is attached to the main body base 12, and includes a main body base attaching portion 51 that contacts the main body base 12. Moreover, as shown in FIG. 7, the louver part 53 in which the some slit 52 was formed is provided. The louver part 53 is a part capable of releasing the air in the housing 3 sent from the ventilation fan 13 to the outside. In addition, the louver portion 53 functions so as to prevent foreign matter from entering the unit 1.

  The louver member 14 of the embodiment includes a protruding portion 11 that comes into contact with the housing 3, and a belt-like contact surface 54 provided on the protruding portion 11 can come into contact with the housing 3. If the protrusion 11 is provided on the louver member 14, the number of parts can be reduced, and the workability of the assembly work is improved. In addition, the louver member 14 of the embodiment includes a cover attachment portion 55 that contacts the cover 15, and the cover 15 can be fixed using a hole 56 provided in the cover attachment portion 55. As understood from FIG. 8, the louver member 14 formed in a substantially linear shape is disposed along the four sides of the opening 31. In addition, when the louver member 14 and the mounting bracket 16 are fixed to the main body base 12, as shown in FIG. 9, when the ventilation fan 13 is further attached, it becomes as shown in FIG. Further, when the cover 15 is attached and fixed with a screw member from this state, the state is as shown in FIG.

  As can be understood from FIG. 12 and FIG. 13, in the embodiment, the protruding portion 11 protrudes on the outer peripheral side of the packing 4 interposed between the unit 1 and the housing 3. For this reason, even if the protruding portion 11 is provided, the protruding portion 11 does not block the opening 31 of the housing 3, and the heat countermeasure in the housing 3 is not hindered. Further, the protruding portion 11 has a structure including a belt-like contact surface 54. For this reason, the belt-like contact surface 54 covers the packing 4, and deterioration from the external environment due to sunlight or the like can be reduced. Further, the presence of the band-shaped contact surface 54 can further prevent water from entering the unit 1.

  As can be understood from FIG. 13, in the embodiment, a mounting structure is provided in which a drainable groove portion 57 is provided between the belt-like contact surface 54 and the packing 4. For this reason, even if water enters from the gap between the housing 3 and the contact surface 54, it will pass through the groove 57, and it is difficult for water to enter the packing 4 side where it is more difficult for water to enter than the groove 57. Become. Note that there is a gap between the louver members 14, and water that has entered the groove portion 57 can be discharged to the outside through this gap. That is, in the embodiment, since the louver member 14 is arranged in a rectangular shape, the water that has entered the groove 57 from the four corners partitioned by the louver member 14 can be discharged.

  Although not shown, the belt-like contact surface 54 may be provided with a notch that can be drained. For example, by providing a notch extending from the end in the short direction to the groove 57 on the contact surface 54 of the louver member 14 formed of a single plate, the distance to the part where the intruded water can be discharged can be reduced. Can be shortened. Other means may be employed to shorten the distance to the site where the invading water can be discharged. For example, the length of the louver member 14 may be shortened, and the louver member 14 may be disposed so as to provide a space capable of draining between the louver members 14. More specifically, when a plurality of louver members 14 arranged along one side of the opening 31 are arranged as described above, the water that has entered the groove 57 from a location different from the four corners partitioned by the louver member 14 is used. Can be discharged.

  As described above, the present invention has been described by taking the embodiment as an example. However, the present invention is not limited to the above-described embodiment, and various aspects can be adopted. For example, the contact portion can be provided on the main body base.

  In addition, the opening can be provided on the side surface without being provided on the top surface.

DESCRIPTION OF SYMBOLS 1 Unit 3 Housing | casing 4 Packing 10 Electrical equipment storage box 11 Protrusion part 54 Contact surface 57 Groove part

Claims (6)

  A unit that is attached so as to cover the opening provided in the housing of the electrical equipment storage box, and protrudes toward the housing so that the compression amount of the packing interposed between the unit and the housing can be limited. A unit with parts.   The unit according to claim 1, wherein the protruding portion protrudes more on the outer peripheral side than the packing interposed between the unit and the housing.   The unit according to claim 2, wherein the protrusion has a belt-like contact surface.   The unit according to claim 3, wherein a notch that can be drained is provided on the belt-like contact surface.   The unit mounting structure according to claim 3 or 4, wherein a drainable groove is provided between the belt-like contact surface and the packing.   The unit according to any one of claims 1 to 4, wherein a protrusion is provided on the louver member that suppresses entry of foreign matter.

Images