JP2019027633A - Substrate fixing structure and refrigerator including the same - Google Patents

Abstract

To provide a substrate fixing structure which can fix a circuit board with a simple structure at the interior of a box body member such as a control box, and to provide a refrigerator including the substrate fixing structure.SOLUTION: A substrate fixing structure 40 fixes a circuit board 34 in a control box 20 housed in a refrigerator. Specifically, the circuit board 34 has: a first major surface 34E; a second major surface 34F; a first side 34A and a second side 34B extending in a first direction and facing each other; and a third side 34C and a fourth side 34D extending in a second direction and facing each other. A cutout contact part 41 which is a first movement restriction part contacts with the first side 34A of the circuit board 34 to restrict movement of the circuit board 34 along the first direction. Further, a sandwich part 42 which is a second movement restriction part contacts with the second side 34B of the circuit board 34 to restrict movement of the circuit board 34 along the second direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a board fixing structure for fixing a circuit board inside a box member incorporated in a refrigerator, for example, and a refrigerator provided with the board fixing structure.

  A general refrigerator has a plurality of storage rooms such as a freezing room and a refrigeration room inside a heat insulation box, and cool air cooled by a refrigeration cycle cooler is blown to each storage room, so that Cooling is performed so that the inside temperature is in a predetermined temperature range.

  Moreover, a control box for the user to adjust the internal temperature may be arranged in the refrigerator storage chamber. A refrigerator provided with such a control box is described in Patent Document 1, for example.

  There is also a control box that adjusts the internal temperature of the refrigerator by rotating the volume knob by the user. In such a control box, a circuit board is fixed inside the control box using fastening means such as screws. A volume element that rotates in synchronization with the knob is fixed to the circuit board. And a user can adjust the quantity of the cool air ventilated to a storehouse, for example, and can adjust the internal temperature of a storehouse by rotating a volume via a rotary knob.

JP 2002-305383 A

  However, in the control box structure described above, the circuit board to which the volume is fixed is fixed to the inner wall of the control box by fastening means using a nut or the like. Therefore, in the manufacturing process of a refrigerator, the operation | work which fixes a volume to the inner wall of a control box had the subject that it was complicated. Furthermore, there has been a problem that forgetting to tighten the nut occurs in the manufacturing process and the circuit board is not fixed to the control box.

  The present invention has been made in view of the above circumstances, and an object thereof is to reliably fix a circuit board with a simple configuration inside a box member such as a control box. It is in providing a board | substrate fixed structure and a refrigerator provided with the same.

  The present invention is a board fixing structure for fixing a circuit board on which a conductive pattern is formed inside a box member housed in a refrigerator, and the circuit board is a first main body facing the outside of the box member. A first main side and a second side that extend in a first direction along the inner surface of the box member and face each other, and a first main side that faces the first main surface; A first movement restricting portion extending from an inner surface of the box body member, the first movement restricting portion having a third side and a fourth side extending opposite to each other and extending in a second direction orthogonal to the direction; The movement of the circuit board along the first direction is restricted by contacting the first side of the circuit board, and a second movement restricting portion extending from the inner surface of the box member is provided on the circuit board. The movement along the second direction of the circuit board is restricted by contacting the two side edges. And features.

  Furthermore, in the board fixing structure of the present invention, an electronic component that is rotated by a user is fixed to the first main surface of the circuit board.

  Furthermore, in the board fixing structure of the present invention, the first movement restricting part is a notch abutting part that abuts a notch part where the first side of the circuit board is partially notched.

  Furthermore, in the board fixing structure of the present invention, the second movement restricting portion is a holding portion that holds the first side edge and the second side edge of the circuit board, and the second movement restricting portion is the second movement restricting portion. It arrange | positions at the both sides of 1 movement control part, It is characterized by the above-mentioned.

  Furthermore, in the board fixing structure of the present invention, a light emitting element is fixed to the first main surface of the circuit board, and the box member in the vicinity of the circuit board transmits light emitted from the light emitting element. It consists of a light part.

  Furthermore, in the board fixing structure of the present invention, the first movement restricting part is an insertion part into which the first side of the circuit board is inserted.

  Furthermore, in the board fixing structure of the present invention, the insertion part is formed in the vicinity of both end parts of the first side of the circuit board, and the second movement restricting part is formed at a position sandwiched between the insertion parts, It has a contact surface which contacts the 2nd principal surface of the circuit board, and a clamping part which clamps the 2nd side.

  Furthermore, in the board fixing structure according to the present invention, the second movement restricting portion tilts the circuit board so that light emitted from the light emitting element faces a center side in the refrigerator storage chamber. .

  Furthermore, in the substrate fixing structure of the present invention, a groove portion is formed in the light transmitting portion along the first side of the circuit board.

  The refrigerator of the present invention includes the above-described substrate fixing structure.

  The present invention is a board fixing structure for fixing a circuit board on which a conductive pattern is formed inside a box member housed in a refrigerator, and the circuit board is a first main body facing the outside of the box member. A first main side and a second side that extend in a first direction along the inner surface of the box member and face each other, and a first main side that faces the first main surface; A first movement restricting portion extending from an inner surface of the box body member, the first movement restricting portion having a third side and a fourth side extending opposite to each other and extending in a second direction orthogonal to the direction; The movement of the circuit board along the first direction is restricted by contacting the first side of the circuit board, and a second movement restricting portion extending from the inner surface of the box member is provided on the circuit board. The movement along the second direction of the circuit board is restricted by contacting the two side edges. And features. Therefore, when the circuit board is fixed inside the box member, the circuit board is fixed by the first movement restricting portion and the second movement restricting portion formed inside the box member without using a fastening means such as a nut. Therefore, it is possible to prevent the circuit board from being displaced due to the loosening of the nut. Furthermore, the process of fastening the nut in the manufacturing process is not necessary, and the circuit board can be fixed with a simple configuration in which the circuit board is locked to the first movement restricting portion and the second movement restricting portion. I can do it.

  Furthermore, in the board fixing structure of the present invention, an electronic component that is rotated by a user is fixed to the first main surface of the circuit board. Therefore, even if a rotational moment acts on the circuit board by being operated by the user, the movement of the circuit board is restricted by the first movement restricting portion and the second movement restricting portion. The circuit board is prevented from rotating.

  Furthermore, in the board fixing structure of the present invention, the first movement restricting part is a notch abutting part that abuts a notch part where the first side of the circuit board is partially notched. Therefore, the circuit board can be fixed with respect to the first direction with a simple configuration in which the notch contact portion is brought into contact with the notch portion of the circuit board.

  Furthermore, in the board fixing structure of the present invention, the second movement restricting portion is a holding portion that holds the first side edge and the second side edge of the circuit board, and the second movement restricting portion is the second movement restricting portion. It arrange | positions at the both sides of 1 movement control part, It is characterized by the above-mentioned. Therefore, the movement of the circuit board in the second direction can be restricted by holding the first side edge and the second side edge of the circuit board by the second movement restricting part which is the holding part. Furthermore, the circuit board can be more stably fixed to the box member by disposing the second movement restricting portion at a position sandwiching the first movement restricting portion.

  Furthermore, in the board fixing structure of the present invention, a light emitting element is fixed to the first main surface of the circuit board, and the box member in the vicinity of the circuit board transmits light emitted from the light emitting element. It consists of a light part. Therefore, the storage room of the refrigerator can be stably brightened by the light emitting element fixed to the circuit board fixed in a more stable state than the first movement restriction part and the second movement restriction part.

  Furthermore, in the board fixing structure of the present invention, the first movement restricting part is an insertion part into which the first side of the circuit board is inserted. Therefore, the circuit board can be fixed in the first direction by inserting the circuit board into the first movement restricting portion which is the insertion portion.

  Furthermore, in the board fixing structure of the present invention, the insertion part is formed in the vicinity of both end parts of the first side of the circuit board, and the second movement restricting part is formed at a position sandwiched between the insertion parts, It has a contact surface which contacts the 2nd principal surface of the circuit board, and a clamping part which clamps the 2nd side. Therefore, the second movement restricting portion abuts against the second main surface of the circuit board and sandwiches the second side, so that the circuit board can be firmly fixed in the second direction. The angle of the substrate can be kept at a predetermined angle.

  Furthermore, in the board fixing structure according to the present invention, the second movement restricting portion tilts the circuit board so that light emitted from the light emitting element faces a center side in the refrigerator storage chamber. . Therefore, by tilting the circuit board at the second movement restricting portion, the light emitted from the light emitting element travels toward the center of the storage room of the refrigerator, and can brightly illuminate the storage room.

  Furthermore, in the substrate fixing structure of the present invention, a groove portion is formed in the light transmitting portion along the first side of the circuit board. Therefore, for example, by transmitting the light emitted from the light emitting element which is an LED element through the light transmitting part in which the groove part is formed, it is possible to illuminate a wide area inside the storage chamber.

  The refrigerator of the present invention includes the above-described substrate fixing structure. Accordingly, the circuit board can be fixed at a predetermined position with a simple configuration inside the box member disposed in the refrigerator.

It is a front external view of the refrigerator which concerns on embodiment of this invention. It is a figure which shows the refrigerator which concerns on embodiment of this invention, (A) is a front view which shows a control box and its periphery part, (B) is a side view which shows a control box and its periphery part. It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, (A) is a perspective view which shows a control box, (B) is the case at the time of seeing a control box from another viewpoint It is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, (A) is a perspective view which shows the circuit board to which the rotating electronic component was fixed, (B) is a circuit board. It is an expansion perspective view which shows the board | substrate fixation structure to fix, (C) is an expansion perspective view which shows a board | substrate fixation structure and a circuit board. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, (A) is the figure which looked at the board | substrate fixing structure from upper direction, (B) was the board | substrate fixing structure seen from the front. (C) is the figure which looked at the board | substrate fixing structure from the right side, (D) is the figure which looked at the board | substrate fixing structure from back, (E) is the EE line of (C). (F) is a view of the substrate fixing structure as viewed from below, (G) is a sectional view taken along line GG of (C), and (H) is a circuit board. It is a perspective view to show, (I) is sectional drawing which expands and shows a 2nd clamping part, (J) is sectional drawing which expands and shows a 1st clamping part. It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, and is a perspective view which shows the circuit board to which the light emitting element was fixed. It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, (A) is an expansion perspective view which shows the board | substrate fixing structure to which the light emitting element was fixed, (B) is board | substrate fixing structure And (C) is a perspective view of the substrate fixing structure as seen from another viewpoint. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the board | substrate fixing structure which concerns on embodiment of this invention, and a refrigerator provided with the same, (A) is a perspective view which shows the circuit board fixed, (B) looked at the board | substrate fixing structure from upper direction. (C) is a cross-sectional view of the substrate fixing structure in the BB section, (D) is a diagram of the substrate fixing structure as viewed from the front, and (E) is a diagram of the substrate fixing structure as viewed from the right. (F) is the figure which looked at the board | substrate fixing structure from back, (G) is the figure which expanded and showed the clamping part, (H) is the figure which looked at the board | substrate fixing structure from the bottom. And (I) is an enlarged view of the insertion portion.

  Hereinafter, the refrigerator 10 which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, the directions of up, down, front, back, left, and right are used as appropriate.

  FIG. 1 is a side sectional view showing a schematic structure of a refrigerator 10 according to an embodiment of the present invention. As shown in FIG. 1, the refrigerator 10 includes a heat insulating box 11 as a main body, and a plurality of storage chambers for storing food and the like are formed inside the heat insulating box 11. Specifically, as the storage room, a freezing room 17 and a refrigerating room 18 are formed from the upper stage.

  The heat insulation box 11 which is the main body of the refrigerator 10 is a steel plate outer box 12 whose front surface is opened, and a synthetic resin inner box 13 which is disposed with a gap in the outer box 12 and has a front surface opened. It consists of and. A heat insulating material 14 made of polyurethane foam is filled and foamed in the gap between the outer box 12 and the inner box 13. In addition, the heat insulation partition wall 19 which divides the freezer compartment 17 and the refrigerator compartment 18 has employ | adopted the same heat insulation structure.

  Front opening of the freezer compartment 17 and the refrigerator compartment 18 is closed in the state which can be opened and closed by the heat insulation door which is not illustrated here. As the heat insulating door that closes the freezer compartment 17 and the refrigerator compartment 18, for example, a heat insulating door whose upper and lower ends on the right side are rotatably supported by the heat insulating box 11 can be adopted.

  In addition, shelves that divide each room in the vertical direction are arranged inside the freezer compartment 17 and the refrigerator compartment 18. Further, a storage container 60 slidable in the front-rear direction is disposed on the left side of the control box 20 inside the refrigerating chamber 18, and can be slid in the front-rear direction in the lowermost part of the refrigerating chamber 18. A storage container 61 is provided.

  Further, on the inner wall on the back side of the freezer compartment 17 and the refrigerator compartment 18 are formed a blower port through which cool air is blown and a return port through which the cooled cold air returns.

  Furthermore, although not shown here, a refrigeration cycle for cooling the cool air blown to each storage is built in the back side of the freezer compartment 17 and the refrigerator compartment 18. This refrigeration cycle is a vapor compression type having a compressor, a radiator, an expansion means, and a cooler, and cools the cool air with the cooler. The refrigerator 10 includes a control device (not shown). The control device executes predetermined arithmetic processing based on input values from sensors and controls each component device such as a compressor. Further, as will be described later, when the user rotates the volume knob 21, the control device changes, for example, the frequency at which the compressor of the refrigeration cycle is operated, thereby adjusting the indoor temperature of each storage.

  With reference to FIG. 2, the control box 20 with which the refrigerator 10 of this embodiment is provided is demonstrated. FIG. 2A is a front view of the refrigerator 10 showing an enlarged portion where the control box 20 is disposed, and FIG. 2B is a side view of the control box 20 as viewed from the inside.

  Referring to FIG. 2A, the control box 20 is a box member disposed at the upper right end of the refrigerator compartment 18, and a volume knob 21 and an open / close detection device 22 are provided on the front surface thereof. The volume knob 21 is rotatably attached to the housing of the control box 20. The user can raise the indoor temperature of the refrigerator compartment 18 by rotating the volume knob 21 in one direction, and can lower the indoor temperature of the refrigerator compartment 18 by rotating the volume knob 21 in the other direction. .

  The open / close detection device 22 has a switch structure that can be moved forward and backward. When the refrigerator compartment 18 is closed by a heat insulating door (not shown), the open / close detection device 22 is pressed by the heat insulating door. As a result, the open / close detection device 22 detects that the heat insulating door has closed the refrigerator compartment 18, and a light emitting element 29 described later disposed in the control box 20 does not emit light. On the other hand, when a heat insulating door (not shown) that closes the refrigerator compartment 18 is opened, the open / close detector 22 is not pressed by the heat insulating door and protrudes forward. As a result, the open / close detection device 22 detects that the heat insulating door is open, causes a light emitting element 29 described later disposed in the control box 20 to emit light, and illuminates the inside of the refrigerator compartment 18.

  With reference to FIG. 2 (B), the rail 31 is formed by making the side surface of the control box 20 protrude in the shape of a wall. The storage container 60 described above moves in the front-rear direction along the rail 31. A slit 24 is formed at the lower end of the control box 20, and a temperature sensor 23 is disposed in the vicinity of the slit 24. The temperature sensor 23 detects the indoor temperature of the refrigerator compartment 18, and a control device (not shown) compresses the compressor of the refrigeration cycle based on the output of the temperature sensor 23 so that the indoor temperature of the refrigerator compartment 18 falls within a predetermined temperature band. To control.

  The configuration of the control box 20 will be described in detail with reference to FIG. 3A is a perspective view showing the control box 20, and FIG. 3B is a perspective view when the control box 20 is viewed from another viewpoint. Here, in order to illustrate the internal configuration of the control box 20, the translucent portion 32 attached to the lower surface of the control box 20 is not illustrated.

  With reference to FIG. 3A and FIG. 3B, the control box 20 includes a box member 30 and each component incorporated in the box member 30. The control box 20 is made of synthetic resin such as injection-molded PP (Polypropylene), and has a main surface portion 26 extending in the up-down and front-rear directions, and a side surface portion 27 extending perpendicularly from the peripheral portion of the main surface portion 26 to the right. And a side portion 28. The volume knob 21 and the open / close detection device 22 are disposed on the side surface portion 27 facing the front of the box member 30. A circuit board 34 and a circuit board 35 on which conductive patterns are formed are disposed inside the box member 30. The circuit board 34 is disposed at the front end portion of the box member 30, and a variable resistor (electronic component) whose resistance value is changed by being rotated by a user's rotation operation through the volume knob 21 is mounted. The circuit board 35 is disposed at the lower end of the box member 30 and is mounted with a light emitting element 29 described later that illuminates the refrigerator compartment 18. Details of the circuit board 34 and the circuit board 35 will be described later. Moreover, the slit 24 is formed by partially opening the side surface portion 28.

  With reference to FIG. 4, a board fixing structure 40 for fixing the circuit board 34 to the box member 30 of the control box 20 will be described. 4A is a perspective view showing a circuit board 34 to which an electronic component 37 is fixed, and FIG. 4B is an enlarged perspective view showing a board fixing structure 40 for fixing the circuit board 34. FIG. C) is an enlarged perspective view showing the board fixing structure 40 and the circuit board 34.

  Referring to FIG. 4A, circuit board 34 is a board made of glass epoxy resin or the like, and conductive patterns (not shown) are formed on both main surfaces of circuit board 34. The circuit board 34 has a substantially rectangular shape, and has a first side 34A and a second side 34B that face each other in the left-right direction, and a third side 34C and a fourth side 34D that face each other in the vertical direction. ing. The first side 34A and the second side 34B extend along the first direction, and the third side 34C and the fourth side 34D extend along the second direction. The circuit board 34 has a first main surface 34E facing forward and a second main surface 34F facing backward.

  An electronic component 37 is fixed to the first main surface 34E facing the front of the circuit board 34. The electronic component 37 is connected to the volume knob 21 described above, and the resistance value of the built-in variable resistor is changed by rotating the front part thereof. Under use conditions, when the user rotates the volume knob 21, the front portion of the electronic component 37 also rotates together with the volume knob 21.

  Two cutout portions 36 are formed by partially cutting the first side 34 </ b> A of the circuit board 34 into a rectangular shape. The notch 36 is a part for fixing the position of the notch 36 in the vertical direction when the circuit board 34 is assembled to the box member 30.

  Although not shown in FIG. 4A, a terminal portion for connecting to the harness is mounted on the first main surface 34E of the circuit board 34.

  With reference to FIG. 4B, the circuit board 34 having the above-described configuration is disposed in the vicinity of the side surface portion 27 inside the box member 30. The first main surface 34E of the circuit board 34 faces the side surface portion 27. Further, the end portion of the electronic component 37 fixed to the first main surface 34 </ b> E of the circuit board 34 is connected to the volume knob 21 inserted into the inside through the opening of the side surface portion 27.

  A board fixing structure 40 that fixes the circuit board 34 inside the box member 30 will be described. The substrate fixing structure 40 includes a sandwiching portion 42 and a notch contact portion 41 that protrude toward the left from the inner surface of the main surface portion 26 of the box member 30. The notch contact portion 41 is a first movement restricting portion that fixes the circuit board 34 in the up and down direction, and the clamping portion 42 is a second movement restricting portion that fixes the circuit board 34 in the left and right direction. Here, two sandwiching portions 42 and two notch contact portions 41 are formed, and the sandwiching portion 42 is disposed at a position sandwiching the notch contact portion 41 in the vertical direction. The clamping part 42 and the notch contact part 41 are integrally formed by injection-molding synthetic resin such as PP together with other parts of the box member 30.

  As shown in FIG. 4C, the clamping part 42 has a first clamping part 43 at its intermediate part and a second clamping part 44 at its end part. The first clamping part 43 and the second clamping part 44 have a claw shape that can clamp the end of the circuit board 34. The distance between the first clamping part 43 and the second clamping part 44 is equal to the distance between the first side 34A and the second side 34B of the circuit board 34. Therefore, when the circuit board 34 is fixed by the board fixing structure 40, the first clamping part 43 clamps the first side 34A of the circuit board 34 and the second clamping part 44 clamps the second side 34B of the circuit board 34. To do. Further, the rear side main surface of the sandwiching portion 42 is a flat surface in contact with the first main surface 34 </ b> E of the circuit board 34. The clamping part 42 fixes the circuit board 34 with respect to the left-right direction and the front-back direction.

  Although not shown here, solder used for mounting the electronic component 37 is welded to the second main surface 34F of the circuit board 34. Therefore, the second main surface 34F of the circuit board 34 is formed with an uneven shape by solder. In the present embodiment, the rear-side main surface of the sandwiching portion 42 is in contact with the first main surface 34E of the circuit board 34 on which no uneven shape is formed by solder. By doing in this way, the circuit board 34 can be more stably fixed by the clamping part 42.

  Since the electronic component 37 mounted on the circuit board 34 rotates under use conditions, a rotational moment acts on the circuit board 34 accordingly. In this embodiment, since both ends in the longitudinal direction of the circuit board 34 are clamped by the clamping part 42, even if a rotational moment acts on the circuit board 34, the circuit board 34 is prevented from moving in the rotational direction. can do.

  As shown in FIG. 4C, the notch contact portion 41 is a portion where the upper end of the wall-like portion from which the main surface portion 26 is protruded is cut into a rectangle, and the position thereof is shown in FIG. It corresponds to the notch 36. Therefore, when the circuit board 34 is incorporated in the board fixing structure 40, each notch contact portion 41 is fitted in each notch portion 36. With this configuration, the circuit board 34 is fixed to the box member 30 along the vertical direction.

  In this embodiment, the position of the circuit board 34 is fixed by the board fixing structure 40 formed by projecting a part of the box member 30 into the inside without using the fastening structure described in the background art. ing. Therefore, by fitting the circuit board 34 into the board fixing structure 40, the circuit board 34 can be fixed to the box member 30, and a tool and labor for fastening are not required. Can be simplified.

  The above-described substrate fixing structure 40 will be described in detail with reference to FIG. This figure shows the substrate fixing structure 40 in detail. FIG. 5A is a view of the substrate fixing structure 40 as viewed from above. FIG. 5B is a view of the substrate fixing structure 40 as viewed from the front. 5C is a view of the substrate fixing structure 40 as viewed from the right side, FIG. 5D is a view of the substrate fixing structure 40 as viewed from the rear, and FIG. FIG. 5C is a cross-sectional view taken along line EE in FIG. 5C, FIG. 5F is a view of the substrate fixing structure 40 as viewed from below, and FIG. 5G is a line GG in FIG. 5H is a perspective view showing the circuit board 34, and FIG. 5I is an enlarged cross-sectional view showing the second clamping portion 44, and FIG. FIG. 4 is an enlarged cross-sectional view showing a first clamping part 43.

  Referring to FIGS. 5A and 5F, the holding portion 42 for holding the circuit board 34 includes a base portion 48, a first holding portion 43 formed on the left end side of the base portion 48, and a base portion. 48 has a second clamping part 44 formed on the right end side of 48 and an extending part 57 extending further to the right from the second clamping part 44. The base 48 is a substantially plate-like member having a rectangular cross section extending rightward from the main surface portion 26. The first clamping part 43 protrudes in a bowl shape from the base part 48 toward the rear and opens on the right side. The second clamping part 44 protrudes in the shape of a bowl from the base 48 toward the rear and opens on the left side. The first clamping portion 43 clamps the first side 34A of the circuit board 34 shown in FIG. The second clamping part 44 clamps the second side 34B of the circuit board 34 shown in FIG. The substrate fixing structure 40 has two sandwiching portions 42 having such a configuration at locations separated in the vertical direction.

  Referring to FIG. 5C, the substrate fixing structure 40 has a plate-like portion 45 that connects the upper holding portion 42 and the lower holding portion 42. As shown in FIGS. 5B and 5D, the plate-like portion 45 extends from the main surface portion 26 toward the right.

  Referring to FIGS. 5B and 5C, two front ribs 46 extending forward from the front surface of plate-like portion 45 are formed. The rear end of the front rib 46 is connected to the front rib 46. The left end of the front rib 46 is connected to the main surface portion 26. With reference to FIGS. 5C and 5D, two rear ribs 47 extending rearward from the rear surface of the plate-like portion 45 are formed. The front end of the rear rib 47 is connected to the main surface portion 26. Further, the left end of the rear rib 47 is connected to the main surface portion 26. By forming the front rib 46 and the rear rib 47 as described above, it is possible to increase the strength of the board fixing structure 40 in the front-rear direction. When the circuit board 34 is incorporated in the board fixing structure 40, the board fixing structure It is possible to prevent 40 from falling in the front-rear direction.

  Referring to FIG. 5 (E), a notch 62 is formed by cutting the upper surface of the rear rib 47 into a rectangular shape. The width of the notch 62 in the front-rear direction is substantially the same as that of the circuit board 34. As shown in FIG. 5C, the notch 62 is formed in each rear rib 47. When the circuit board 34 shown in FIG. 5 (H) is incorporated in the board fixing structure 40, each of the notches 36 formed on the lower surface of the circuit board 34 is fitted in each notch 62 of the board fixing structure 40. With this configuration, the circuit board 34 is positioned with respect to the board fixing structure 40 in the vertical direction.

  With reference to FIG. 5 (G), FIG. 5 (I), and FIG. 5 (J), the above-described first clamping part 43, second clamping part 44, and the like will be described in detail. FIG. 5 (I) shows the second clamping part 44 in an enlarged manner, and FIG. 5 (J) shows the first clamping part 43 in an enlarged manner.

  With reference to FIG. 5G, a plate-like support portion 58 is formed from the rear end of the first clamping portion 43 toward the main surface portion 26. The left end of the support portion 58 is connected to the main surface portion 26. By forming the support portion 58, the first clamping part 43 can be firmly supported from the left side. When the circuit board 34 is fitted into the first clamping part 43, the first clamping part 43 is deformed or damaged. Can be prevented.

  Referring to FIG. 5 (I), the second clamping portion 44 protrudes in a hook shape from the base portion 48 toward the rear, and further opens to the left, and a circuit is formed in this open portion. The second side 34B of the substrate 34 is fitted. The distance L10 between the second clamping part 44 and the base 48 is substantially the same as the thickness of the circuit board 34. The left end surface of the second clamping part 44 is an inclined surface that is inclined forward toward the left. With this configuration, the work of fitting the circuit board 34 into the board fixing structure 40 is facilitated.

  Referring to FIG. 5 (J), the first clamping portion 43 protrudes in a hook shape from the base portion 48 toward the rear, and opens to the right, and the circuit board is formed in the opening portion. 34 first side 34A is fitted. The distance L11 between the first clamping part 43 and the base 48 is the same as the distance L10 described above, and is substantially the same as the thickness of the circuit board 34. The right end surface of the first clamping portion 43 is an inclined surface that is inclined forward toward the right. With this configuration, the work of fitting the circuit board 34 into the board fixing structure 40 is facilitated.

  When fixing the circuit board 34 to the board fixing structure 40 described above, first, an operator fits the first side 34 </ b> A of the circuit board 34 into the first clamping part 43 of the board fixing structure 40. At this time, the notch 36 of the circuit board 34 shown in FIG. 5 (H) meshes with the notch 62 of the board fixing structure 40 shown in FIGS. 5 (C) and 5 (E). Next, with reference to FIG. 5F and FIG. 5H, the operator fits the second side 34 </ b> B of the circuit board 34 into the second clamping part 44 of the board fixing structure 40. At this time, the operator holds the extending portion 57 of the substrate fixing structure 40, so that this fitting becomes easy. With the above operation, the circuit board 34 can be fixed to the board fixing structure 40.

  With reference to FIGS. 6 and 7, a structure for fixing the circuit board 35 on which the light emitting element 29 is mounted inside the box member 30 will be described. FIG. 6 is a perspective view showing the circuit board 35. FIG. 7A is an enlarged perspective view showing a portion of the box member 30 where the circuit board 35 is disposed, and FIG. 7B is an enlarged perspective view showing the board fixing structure 50 and the circuit board 35. FIG. 7C is a perspective view of the fixing structure viewed from another viewpoint.

  With reference to FIG. 6, the circuit board 35 is a board | substrate which consists of glass epoxy resin etc. in which the conductive pattern was formed, for example, and is a board | substrate for mounting the light emitting element 29 which illuminates the storage chamber. Specifically, the circuit board 35 has a substantially rectangular shape, the first side 35A and the second side 35B facing each other in the left-right direction, and the third side 35C and the fourth side facing each other in the front-rear direction. It has a side 35D. Further, the circuit board 35 has a first main surface 35E facing downward and a second main surface 35F facing upward.

  Here, as an example, the two light emitting elements 29 are mounted on the first main surface 35E of the circuit board 35 as electronic components. As the light emitting element 29, for example, an LED is employed. In addition, a connection terminal 38 for connecting to the conductive wire is fixed to the second main surface 35F of the circuit board 35. The light emitting element 29 is connected to a power source via the connection terminal 38.

  With reference to FIG. 7A, the circuit board 35 having the above-described configuration is disposed so as to face the light-transmitting portion 32 fitted into the side surface portion 28 of the box member 30. Although not shown here, the light emitting element 29 fixed to the circuit board 35 faces the box member 30. The translucent portion 32 is made of a synthetic resin that is transparent or translucent to visible light, and the groove portion 33 is formed by recessing the inner surface thereof in a groove shape along the front-rear direction. On the inner surface of the light transmitting part 32, a plurality of groove parts 33 are formed at substantially equal intervals.

  The light emitted from the light emitting element 29 passes through the light transmitting part 32 and illuminates the refrigerator compartment 18 shown in FIG. Further, since the groove portion 33 is formed in the light transmitting portion 32, the light emitted straight from the light emitting element 29 is refracted by the groove portion 33. As a result, the refrigerator compartment 18 is illuminated as a whole.

  With reference to FIGS. 7A, 7B, and 7C, a configuration for fixing the circuit board 35 with the board fixing structure 50 will be described.

  As shown in FIG. 7B, the circuit board 35 is fixed inside the box member 30 by the board fixing structure 50. The board fixing structure 50 has an insertion part 51 as a first movement restricting part, and a clamping part 52 as a second movement restricting part.

  As shown in FIG. 7B, the insertion portion 51 is a portion in which the inner surface of the main surface portion 26 of the box member 30 protrudes in a hole shape toward the right, and the front-rear direction end portion of the circuit board 35 is Inserted. The insertion part 51 arrange | positioned ahead shown in FIG.7 (B) is exhibiting the shape fitted to the front lower end part of the circuit board 35 shown in FIG. The insertion part 51 arrange | positioned at the back shown to FIG. 7 (B) is exhibiting the shape fitted to the back lower end part of the circuit board 35 shown in FIG.

  The clamping part 52 is arrange | positioned between the insertion parts 51, and is the site | part which protruded the inner surface of the main surface part 26 of the box member 30 in the shape of a wall. As shown in FIGS. 7B and 7C, a flat base 53 is formed at the intermediate part of the clamping part 52, and a nail-like clamping part 54 is formed at the right end of the clamping part 52. Is formed. Further, a support portion 55 that extends upward in a plate shape from the base portion 53 and continues to the main surface portion 26 is formed. Since the support portion 55 is formed behind the base portion 53, the sandwiching portion 52 is inclined at a predetermined angle.

  The board fixing structure 50 has a contact portion 56 that comes into contact with the first main surface 35E of the circuit board 35 from below. The contact portion 56 is disposed between the sandwiching portion 52 and the insertion portion 51 in the front-rear direction. The abutting portion 56 is disposed below the sandwiching portion 52 and the insertion portion 51 in the vertical direction. When the contact portion 56 is viewed from the rear, the contact portion 56 has a substantially right triangle shape. The inclined surface of the contact portion 56 contacts the first main surface 35E of the circuit board 35.

  As shown in FIG. 7B, the circuit board 35 is fixed in the front-rear direction by inserting both end portions on the first side 35A side into the insertion portion 51. And the circuit board 35 is fixed in the left-right direction position by sandwiching the end of the central part on the second side 35 </ b> B side by the clamping part 54 of the clamping part 52. With the board fixing structure 50 having such a configuration, the position of the circuit board 35 inside the box member 30 is accurately fixed.

  Referring to FIG. 7A, when the sandwiching portion 52 is viewed from the rear, the sandwiching portion 52 has an inclined shape in which the tip end portion is tilted rightward with respect to the main surface portion 26. . By doing in this way, the circuit board 35 fixed by the clamping part 52 can be fixed so that it may incline rightward toward the downward direction. Therefore, with reference to FIG. 1, the light emitted from the light emitting element 29 mounted on the circuit board 35 can be advanced toward the center of the refrigerating chamber 18 to illuminate the refrigerating chamber 18 as a whole.

  As described above, since the clamping part 52 is a part inclined with respect to the main surface part 26, it is not easy to fasten the circuit board 35 to the clamping part 52 with fastening means such as screws as in the background art. In the present embodiment, by inserting and clamping the circuit board 35 into the board fixing structure 50 that is a part of the box body member 30, the box body member 30 can be easily fixed in a state inclined at a predetermined angle. it can. Furthermore, since the clamping part 52 consists of PP excellent in a softness | flexibility, the circuit board 35 can be fixed firmly.

  Further, the surface of the sandwiching portion 52 that faces downward from the base portion 53 is formed flat, and the base portion 53 is in contact with the second main surface 35 </ b> F of the circuit board 35. On the other hand, the light emitting element 29 is fixed to the first main surface 35E of the circuit board 35, and the light emitting element 29 is not fixed to the second main surface 35F. The base 53 is in contact with the second main surface 35F of the circuit board 35 to which the light emitting element 29 is not fixed. By doing in this way, it can prevent that the base 53 inhibits light emission and arrangement | positioning of the light emitting element 29. FIG.

  With reference to FIG. 8, the configuration and the like of the above-described substrate fixing structure 50 will be described in detail. FIG. 8A is a perspective view showing the circuit board 35 to be fixed, FIG. 8B is a view of the board fixing structure 50 as viewed from above, and FIG. 8C is B of the board fixing structure 50. FIG. 8D is a view of the substrate fixing structure 50 as viewed from the front, and FIG. 8E is a view of the substrate fixing structure 50 as viewed from the right. (F) is the figure which looked at the board | substrate fixing structure 50 from back, FIG.8 (G) is the figure which expanded and shows the clamping part 54, FIG.8 (H) looked at the board | substrate fixing structure 50 from the downward | lower direction. FIG. 8 (I) is an enlarged view of the insertion portion 51.

  With reference to FIG. 8B, FIG. 8E, FIG. 8D, etc., the board fixing structure 50 includes a holding portion 49 that holds the second side 35B of the circuit board 35, and the circuit board 35. And an insertion portion 51 into which the first side 35A is inserted. The sandwiching portion 49 includes a plate-like base 53 extending toward the right from the main surface portion 26, a sandwiching portion 54 formed on the right end side of the base 53, and an extending portion 63 that forms the right end of the base 53. Have.

  With reference to FIG. 8D and the like, the lower surface of the base 53 is a flat surface in contact with the second main surface 35F of the circuit board 35. In addition, the base 53 extends so as to incline downward toward the right in order to emit light emitted from the light emitting element 29 mounted on the circuit board 35 toward the center of the storage chamber. .

  With reference to FIG. 8D and the like, the clamping portion 54 protrudes downward from the right end side of the base portion 53 in a bowl shape, and opens toward the left. As shown in FIG. 8B, the clamping portion 54 is formed near the center of the base 53 in the front-rear direction. In addition, referring to FIG. 8G, a distance L <b> 20 between the tip of the clamping part 54 and the base 53 is substantially the same as the thickness of the circuit board 35.

  Referring to FIG. 8E, insertion portions 51 are formed at both ends of the substrate fixing structure 50 in the front-rear direction. As shown in FIGS. 8D and 8F, the insertion portion 51 is formed so as to protrude rightward from the main surface portion 26. Further, in the insertion portion 51, the main surface portion 26 protrudes to the right, so that a contact portion 64 lower than the insertion portion 51 is formed. When the circuit board 35 is inserted into the insertion part 51, the position of the circuit board 35 in the left-right direction can be defined by the contact part 64 coming into contact with the first side 35 </ b> A of the circuit board 35.

  Referring to FIG. 8I, the insertion portion 51 has an incomplete rectangle with a missing front side. The width L21 of the inner space of the insertion portion 51 in the vertical direction is substantially the same as the width of the circuit board 35. Further, the insertion portion 51 on the front side shown in FIG. 8 (E) has a shape symmetrical with the insertion portion 51 shown in FIG. 8 (I).

  With reference to FIG. 8B and FIG. 8D, a rib-like support portion 55 is formed by projecting upward the center of the upper surface of the base portion 53 in the front-rear direction. The lower end portion of the support portion 55 is continuous with the base portion 53, and the left end portion of the support portion 55 is continuous with the main surface portion 26. By forming the support portion 55, the base portion 53 can be reinforced, and the circuit board 35 can be more firmly held by the holding portion 49.

  With reference to FIG. 8B and FIG. 8D, the contact portion 56 is formed by projecting the lower portion of the insertion portion 51 downward in a rib shape. Two contact portions 56 are formed corresponding to each insertion portion 51. As shown in FIG. 8D, the upper side surface of the contact portion 56 is inclined so as to be parallel to the base portion 53 of the clamping portion 49. The distance at which the upper side surface of the contact portion 56 is separated from the lower side surface of the base portion 53 is substantially the same as the thickness of the circuit board 35. When the circuit board 35 is fixed by the board fixing structure 50, the first main surface 35E of the circuit board 35 is in contact with the upper side of the contact portion 56, and the second main surface 35F of the circuit board 35 is in contact with the lower side surface of the base 53. . That is, the circuit board 35 is sandwiched and fixed between the contact portion 56 and the base portion 53.

  When incorporating the circuit board 35 into the board fixing structure 50 having the above-described configuration, first, an operator inserts the first side 35 </ b> A of the circuit board 35 into the insertion portion 51 of the board fixing structure 50. With reference to FIG. 8E, the distance that the inner walls of the insertion portion 51 are separated from each other in the front-rear direction is substantially the same as the width in the front-rear direction of the substrate fixing structure 50. Therefore, the position of the circuit board 35 in the front-rear direction can be fixed by inserting the circuit board 35 into the insertion portion 51. Next, referring to FIG. 8D, the worker fits the second side edge 35 </ b> B of the circuit board 35 into the clamping part 54 of the clamping part 49. By doing so, the position of the circuit board 35 in the left-right direction is fixed. When performing this fitting, the operator can easily fit the circuit board 35 by pressing the extending portion 63 from above.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Refrigerator 11 Heat insulation box 12 Outer box 13 Inner box 14 Heat insulation material 15 Heat insulation door 16 Heat insulation door 17 Freezer room 18 Refrigeration room 19 Heat insulation partition wall 20 Control box 21 Volume knob 22 Opening / closing detection device 23 Temperature sensor 24 Slit 25 Opening 26 Main Surface part 27 Side part 28 Side part 29 Light emitting element 30 Box member 31 Rail 32 Translucent part 33 Groove part 34 Circuit board 34A First side 34B Second side 34C Third side 34D Fourth side 34E First main surface 34F 2nd main surface 35 Circuit board 35A 1st side edge 35B 2nd side edge 35C 3rd side edge 35D 4th side edge 35E 1st main surface 35F 2nd main surface 36 Notch part 37 Electronic component 38 Connection terminal 40 Board fixing Structure 41 Notch contact portion 42 Holding portion 43 First holding portion 44 Second holding portion 45 Plate-like portion 46 Front rib 47 Rear rib 48 Base portion 49 Holding portion 50 Substrate fixing structure 51 Insertion part 52 Clamping part 53 Base part 54 Clamping part 55 Support part 56 Contact part 57 Extension part 58 Support part 60 Storage container 61 Storage container 62 Notch part 63 Extension part 64 Contact part

Claims (10)

A board fixing structure for fixing a circuit board on which a conductive pattern is formed inside a box member housed in a refrigerator,
The circuit board extends in a first direction along a first main surface facing the outside of the box member, a second main surface facing the first main surface, and an inner surface of the box member. A first side and a second side opposite to each other; a third side and a fourth side extending opposite to each other and extending in a second direction orthogonal to the first direction;
The first movement restricting portion extending from the inner surface of the box member is in contact with the first side of the circuit board, thereby restricting movement of the circuit board along the first direction.
The second movement restricting portion extending from the inner surface of the box member is in contact with the second side of the circuit board, thereby restricting movement of the circuit board along the second direction. Substrate fixing structure.   The board fixing structure according to claim 1, wherein an electronic component that is rotated by a user is fixed to the first main surface of the circuit board.   3. The board fixing structure according to claim 2, wherein the first movement restricting part is a notch abutting part that abuts a notch part in which the first side of the circuit board is partially notched. The second movement restricting portion is a sandwiching portion that sandwiches the first side and the second side of the circuit board,
4. The substrate fixing structure according to claim 2, wherein the second movement restricting portion is disposed on both sides of the first movement restricting portion. 5. A light emitting element is fixed to the first main surface of the circuit board,
The board fixing structure according to claim 1, wherein the box member in the vicinity of the circuit board includes a light transmitting portion that transmits light emitted from the light emitting element.   The substrate fixing structure according to claim 5, wherein the first movement restricting portion is an insertion portion into which the first side of the circuit board is inserted. The insertion portion is formed near both end portions of the first side of the circuit board,
The second movement restricting portion is formed at a position sandwiched between the insertion portions, and has a contact surface that contacts the second main surface of the circuit board, and a clamping portion that clamps the second side. The substrate fixing structure according to claim 6.   The said 2nd movement control part inclines the said circuit board so that the light radiated | emitted from the said light emitting element may face the center side in the storage chamber of the said refrigerator, The any one of Claim 5-7 characterized by the above-mentioned. A substrate fixing structure according to claim 1.   9. The substrate fixing structure according to claim 5, wherein a groove portion is formed in the translucent portion along the first side of the circuit board. A refrigerator comprising the substrate fixing structure according to any one of claims 1 to 9.

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