JP6199565B2 - refrigerator - Google Patents

Description

  Embodiments relate to a refrigerator.

  There is a refrigerator in which a circuit board is housed in an upper part of the back surface of a heat insulating box that is filled with a heat insulating material between an outer box and an inner box. For example, Patent Document 1 discloses a refrigerator in which a circuit board storage chamber is provided above the rear surface of a heat insulating box and the circuit board is disposed in the circuit board storage portion.

  The lead wire extending from the circuit board needs to be connected to a device in the machine room located below, an operation panel provided in front of the refrigerator, or the like. In the refrigerator in which the circuit board is disposed above the back surface of the heat insulation box, the lead wire is generally passed from the circuit board storage chamber to the space between the rear plate and the heat insulation box. Such a refrigerator is required to have a structure in which the lead wire can be easily passed between the heat insulating box and the rear plate.

  Moreover, in a refrigerator in which a circuit board is arranged above the heat insulation box, it is necessary to attach the rear plate after passing the lead wire through the back side of the heat insulation box, so that the rear plate can be easily attached. It has been demanded. However, in the conventional refrigerator, a groove for inserting the upper end portion of the rear plate is provided below the circuit board housing member constituting the circuit board housing chamber, and the upper end of the rear plate is slid from below to above in this groove. Since it has a structure to be inserted, it was necessary to attach it while sliding the rear plate upward. Since the rear plate is a large plate, mounting it while sliding it in this way is a very laborious work, and when inserting the slide, it does not fit into the groove and it is deformed or damaged. As a result, there is a problem that defective products are likely to appear.

JP-A-6-66474

  The present invention has been made in view of the above-described problems of the prior art, and allows a lead wire to be easily passed from a circuit board storage chamber to a space between a heat insulating box and a rear plate, and the rear plate can be easily formed. An object of the present invention is to provide a refrigerator that is easy to assemble by providing a structure that can be attached to a refrigerator.

An embodiment includes a hollow, substantially rectangular parallelepiped heat insulation box, and a recess provided as a circuit board storage chamber in a refrigerator including a circuit board storage chamber for storing a circuit board at a position above the back surface of the heat insulation box. A circuit board housing member provided with a lead wire through groove open to the back side, and a groove for passing the lead wire of the circuit board to the back side of the heat insulation box, and the heat insulation box A rear plate that covers a lower portion of the rear surface of the body than the circuit board storage chamber, and the rear plate has its upper end and lower end applied to the rear surface of the heat insulation box from the rear and fixed by screwing. In this manner, the rear plate is fixed to the heat insulating box while being pressed from the back side , and is provided with a backing plate that is a separate component from the circuit board housing member .

It is a back perspective view of the refrigerator in an embodiment. It is a perspective view of the circuit board storage member of the said refrigerator. It is an expansion perspective view in the state where the back plate of the refrigerator was removed. It is an expansion perspective view of the upper-end vicinity part of the rear plate of the refrigerator. It is explanatory drawing regarding the attachment method of the rear board in the said refrigerator. It is explanatory drawing regarding the attachment method of the rear board in the said refrigerator. It is explanatory drawing regarding the attachment method of the rear board in the said refrigerator. FIG. 8A is an enlarged cross-sectional view of the connection portion between the circuit board housing member and the rear plate in the embodiment, and FIG. 8B is an enlarged view of the connection portion between the conventional circuit board housing member and the rear plate. It is sectional drawing.

Hereinafter, embodiments will be described in detail with reference to the drawings. The refrigerator 1 of the embodiment shown in FIG. 1 includes a heat insulating box 3 configured by sandwiching a heat insulating material between an inner box and an outer box. A circuit board storage chamber 11 in which the circuit board 5 is stored is disposed above the heat insulation box 3, and a machine room 13 is disposed below the heat insulation box 3. A rear plate 15 is disposed between the circuit board storage chamber 11 and the machine chamber 13. In the following description, the refrigerator 1 will be described as being in a normal use state as shown in FIG. 1 and up and down and left and right when viewed from the front. However, when the refrigerator 1 is viewed from the back side, The top and bottom are the same as seen from the side, but the left and right are reversed. Further, in the assembly process, the back member is attached in such a manner that the back member is lowered "from above" while the front side of the refrigerator 1 is horizontally laid downward. With reference to the posture shown in the drawing, it may be described that the attachment is “from the rear” or “from the back”. Also,
The refrigerator 1 in this embodiment is characterized by a structure that allows the lead wire 8 to be easily passed from the circuit board storage chamber 11 to the space between the rear plate 15 and the heat insulating box 3. Further, the refrigerator 1 in the present embodiment does not need to be slid upward from the lower side when the rear plate 15 is attached to the heat insulation box 3, and the rear plate 15 is put on the back side of the heat insulation box 3, It is characterized in that the rear plate 15 can be easily fixed simply by fixing the plate 9 from the back.

  As shown in FIGS. 2 and 3, the circuit board housing chamber 11 is constituted by a circuit board housing member 21 made of plastic. FIG. 2 is a view of the refrigerator 1 as viewed from the rear. The left side of the drawing is the left and the right side is the right, which is opposite to the left and right when the refrigerator 1 is viewed from the front. The circuit board housing member 21 includes a recess 22 that constitutes the circuit board storage chamber 11, and the recess 22 is open on the back side. The recess 22 is formed of a bottom plate 31 and side walls 32 that rise from the outer peripheral edge of the bottom plate 31 to the back side. Although the bottom plate 31 has a substantially square shape, a portion from the lower end of the left side to the vicinity of the top and bottom center slightly protrudes to the left side and includes a step portion 33. The bottom plate 31 is formed with a plurality of screw holes 31a for fixing the circuit board 5 (only one screw hole 31a is visible in FIG. 2).

  A cover mounting portion 23 to which a circuit board storage chamber cover (not shown) is attached is formed to extend outward at the rear side end of the recess 22 of the circuit board storage chamber 11, that is, the rear side end of the side wall 32. Has been. The cover attaching portion 23 is formed with a plurality of screw holes 23a for fixing a circuit board storage chamber cover (not shown) with screws or the like. Further, an edge 24 is formed on the outer end of the cover mounting portion 23 so as to extend outward, and a step 25 is formed between the cover mounting portion 23 and the edge 24. .

  In the cover mounting portion 23D and the edge portion 24D located in the lower portion D, lead wire passage grooves 35 for passing the lead wires 8 of the circuit board 5 from the recesses 22 to the space between the heat insulating box 3 and the rear plate 15 are provided. Is formed. The lead wire through groove 35 is open in the vertical direction and on the back side, and connects the recess 22 and the space inside the rear plate 15 (the space between the rear plate 15 and the heat insulating box 3). Further, the lead wire passage groove 35 has a curved surface at the bottom (front side), and includes a fitting portion 35a to be fitted with a lead wire fixture 18 to be described later in the vicinity of the rear side end portion. In addition, the fitting part 35a is comprised by the level | step difference and notch in which a nail | claw enters. The lead wire 8 is disposed in the space between the rear board 15 and the heat insulating box 3 from the circuit board housing chamber 11 through the lead wire passage groove 35, and the lead wire fixture 18 from the back side in the lead wire passage groove 35. It is fixed by. 2 and 3, two lead wire through grooves 35 are provided. However, it is sufficient that at least one lead groove 35 is provided, and the number is not limited to two.

  A contact plate guide portion 37 is formed at a boundary portion between the cover attachment portion 23D and the edge portion 24D. The contact plate guide portion 37 includes an upper wall 37a that protrudes from the lower end edge of the cover attachment portion 23D to the back side, and a back wall 37b that extends downward from the back side end of the upper wall 37a. Slightly enters the back side of the edge 24D. That is, the upper portion of the edge portion 24D has a double structure by the edge portion 24D and the back wall 37b. A plurality of standing walls 37c are formed between the back wall 37b and the edge 24D. In addition, the back side of the edge portion 24D below the contact plate guide portion 37 is a contact plate placement portion 68 on which a later-described contact plate 9 is placed.

  The cover mounting portion 23D is formed with a plurality of protrusion grooves 38 for fitting and fixing end fixing protrusions 66 of the rear plate 15 to be described later. A portion of the abutting plate guide portion 37 located in the vicinity of the projection groove 38 is notched, and is formed so that the end fixing projection 66 of the rear plate 15 can enter the projection groove 38. A screw hole 38 a for screwing the protrusion 66 is formed at the bottom of the protrusion groove 38.

  In the left and right side portions of the circuit board housing member 21, an inclined portion 41 and a recessed portion 42 positioned above the inclined portion 41 are formed. The inclined portion 41 is connected to the end portions of the left and right edge portions 24L, 24R. Further, flanges 44 extending laterally are formed at both left and right end portions of the inclined portion 41. The flange 44 is a part that is fixed to the heat insulating box 3, and a screw hole 49 that is fixed to the heat insulating box 3 with a screw or the like is formed. A grip 48 is formed near the upper end of the recess 42.

  The lead wire fixture 18 is a member that fixes the lead wire 8 located in the lead wire through groove 35 from the back side. The lead wire fixture 18 includes a flat plate portion 18a that is substantially flush with the cover mounting portion 23D and the edge portion 24D of the circuit board housing member 21 when fitted in the lead wire through groove 35, and the left and right sides of the flat plate portion 18a. And side walls 18b that hang in the front direction from both ends. A fitting portion 18c that is fitted into the fitting portion 35a of the lead wire passage groove 35 is formed in the vicinity of the front side end portion of the side wall 18b. The fitting portion 18c is constituted by a plurality of claws or the like, and is formed so that the claws are engaged with a groove or the like formed in the fitting portion 35a of the lead wire through groove 35. Further, the flat plate portion 18 a is formed with a contact plate guide portion 18 d that is continuous with the contact plate guide portion 37 of the circuit board housing member 21 when fitted into the lead wire through groove 35.

  As shown in FIGS. 1 and 4, the rear plate 15 is on the back side of the heat insulating box 3 and covers the space between the circuit board storage chamber 11 and the machine chamber 13, and the left and right directions of the flat plate portion 61. And an inclined portion 62 that is inclined laterally (laterally) from the end portion. The inclined portion 62 is substantially flush with the inclined portion 41 of the circuit board housing member 21 when the rear plate 15 is attached to the heat insulating box 3. A flange 63 connected to the side plate 3a of the heat insulating box 3 is formed at the side end of the inclined portion 62, and a plurality of screw holes 63a are formed in the flange 63. In addition, a contact plate guide portion 64 is formed in the vicinity of the upper end of the rear plate 15 so as to extend in the left-right direction. The contact plate guide portion 64 is a portion that forms a contact plate placement portion 65 in which the contact plate 9 is placed between the contact plate guide portion 37 of the circuit board housing member 21. Further, a plurality of end fixing protrusions 66 arranged in the protrusion grooves 38 of the circuit board housing member 21 are formed at the upper end of the rear plate 15, and screw holes 67 are provided in the end fixing protrusions 66. It has been.

  As shown in FIG. 2, the contact plate 9 is an elongated plate-like body extending in the left-right direction, and includes a central flat plate portion 9 a and inclined portions 9 b positioned at both side ends (left-right direction end portions) of the flat plate portion 9 a. And a flange 9c protruding outward from both side ends of the inclined portion 9b. The flange 9c is formed with a screw hole 9d for connecting to the side plate 3a of the heat insulating box 3 with a screw or the like.

  Next, how to attach the rear plate 15 will be described with reference to FIGS. First, the circuit board 5 is housed in the recess 22 of the circuit board housing member 21, and the circuit board 5 is fixed with screws or the like. Then, the lead wire 8 extending from the circuit board 5 is passed through the lead wire through groove 35 to the back side of the heat insulating box 3. Next, the lead wire fixing tool 18 is fitted into the lead wire through groove 35 to fix the lead wire 8.

  After the mounting of the lead wire fixture 18 is completed, the rear plate 15 is disposed on the back side of the heat insulating box 3. When the rear plate 15 is disposed on the back side of the heat insulating box 3, it is only necessary to cover the back plate 15 from the back side of the heat insulating box 3. That is, the lower end of the rear plate 15 is placed above the machine chamber 13, and the vicinity of the upper end of the rear plate 15 is placed on the back side of the edge 24 </ b> D of the circuit board housing member 21. Then, the screw is screwed into the screw hole 67 of the end fixing protrusion 66 and the screw hole 38a of the protrusion groove 38, and the upper end of the rear plate 15 is temporarily fixed. At this time, the end fixing projection 66 is positioned in alignment with the projection groove 38 of the circuit board housing member 21. In this way, with the rear plate 15 disposed and temporarily fixed as shown in FIG. 6, the contact plate 9 is disposed on the contact plate disposition portion 65 formed near the upper end of the rear plate 15, and the flange 9 c is disposed on the heat insulating box 3. The screw is applied to the side plate 3a, and the screw is screwed into the screw hole 9d or 9e of the contact plate 9, the screw hole 69 of the rear plate 15, and the screw hole 24a of the contact plate arrangement portion 68 at the lower end edge of the substrate storage member 21 and fixed. To do. Thereby, the vicinity of the upper end of the rear plate 15 and the vicinity of the lower end of the circuit board housing member 21 are overlapped and fixed, and the portion overlapped by the contact plate 9 is pressed from the back side, and the contact plate 9 is attached to the heat insulating box 3. Securely fix. The rear plate 15 is also fixed to the side plate 3a of the heat insulating box 3 with screws. Note that a seal 81 such as a urethane seal is provided between the rear plate 15 and the edge 24D of the circuit board housing member 21 as shown in FIG.

  Thus, the refrigerator 1 in this embodiment provides the lead wire 8 from the circuit board storage chamber 11 to the space between the rear plate 15 and the heat insulating box 3 by providing the lead wire passage groove 35 in the circuit board storage member 21. Can be easily passed through. Therefore, when the lead wire 8 is passed from the circuit board housing chamber 11 to the space between the rear plate 15 and the heat insulating box 3, the lead wire 8 is sandwiched between the rear plate 15 and the circuit board housing member 21. It can be prevented from being cut or damaged due to damage. Moreover, since the operation | work which passes the lead wire 8 from the circuit board storage chamber 11 to the space between the backplate 15 and the heat insulation box 3 can be made easy, the work efficiency which assembles the refrigerator 1 can be improved.

In addition, since the backing plate 9 has a structure in which the backing plate placement portion 65 formed in the vicinity of the upper end of the rear plate 15 is pressed from the back side, when the rear plate 15 is attached, it is only necessary to cover it from the back side of the heat insulating box 3. There is no need to slide from below to above. That is, in the conventional refrigerator, as shown in FIG. 8B, a receiving portion 16 ′ for inserting the upper end portion of the rear plate 15 ′ is formed at the lower end portion of the circuit board housing member 21 ′. Therefore, in order to fix the rear plate 15 ′ to the heat insulating box 3, it is necessary to insert the upper portion of the rear plate 15 ′ into the receiving portion 16 ′ while sliding it from below to above. Since the rear plate 15 ′ is a large and heavy member, this operation is laborious. However, in this embodiment, it is only necessary to place the rear plate 15 on a predetermined place on the back side of the heat insulating box 3 and screw it in a state where the heat insulating box 3 is laid with the front side down, and the heavy rear plate. No need to slide 15 Therefore, it becomes easy to assemble the refrigerator 1 and work efficiency can be increased.

  Further, since the lead wire 8 in the lead wire passage groove 35 can be fixed by the lead wire fixing tool 18, the lead wire 8 does not jump out of the lead wire passage groove 35 when the rear plate 15 is attached. Installation work becomes easy.

  Further, since the rear plate 15 and the substrate storage member 21 overlap each other, that is, since the rear plate 15 is placed on the back side of the substrate storage member 21 and then screwed, the space between the rear plate 15 and the substrate storage member 21 is reduced. Can be easily sealed. Therefore, moisture or the like can be prevented from entering from the portion where the rear plate 15 and the substrate storage member 21 overlap.

  Although an embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Heat insulation box 5 Circuit board 8 Lead wire 9 Contact plate 9a Flat plate part 9b Inclination part 9c Flange 9d Screw hole 11 Circuit board storage chamber 13 Machine room 15 Rear plate 18 Lead wire fixture 18a Flat plate part 18b Side wall 18c Fitting Part 18d contact plate guide part 21 circuit board housing member 22 recess 23 cover mounting part 24 edge part 25 step 31 bottom plate 31a screw hole 32 side wall 33 step part 35 lead wire through groove 35a fitting part 37 contact plate guide part 37a upper wall 37b Rear wall 37c Standing wall 38 Protrusion groove 38a Screw hole 41 Inclined portion 42 Recessed portion 44 Flange 48 Grip portion 49 Screw hole 61 Flat plate portion 62 Inclined portion 63 Flange 63a Screw hole 64 Abutting plate guide portion 65 Abutting plate arrangement portion 66 For end fixing Projection 67 Screw hole

Claims (2)

In a refrigerator comprising a hollow and substantially rectangular parallelepiped heat insulation box, and a circuit board housing chamber for housing a circuit board in a rear upper position of the heat insulation box,
A circuit having a recess as the circuit board storage chamber, and a groove for passing a lead wire of the circuit board on the back side of the heat insulation box, and a lead wire groove opened on the back side A substrate storage member;
A rear plate that covers a lower part than the circuit board storage chamber on the back surface of the heat insulation box,
The rear plate has its upper end and lower end applied to the back of the heat insulation box from behind, and is fixed by screwing,
A refrigerator comprising a backing plate separate from the circuit board housing member, which is fixed to the heat insulating box while pressing the upper end portion of the rear plate from the back side.   2. The lead wire fixing tool for fixing the lead wire located in the lead wire passage groove in a shape in which the lead wire passage groove is closed from the back side, wherein the lead wire is fixed in the lead wire passage groove. Refrigerator.

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