Damper device and refrigerator

Abstract

To provide a damper device and a refrigerator which enable suppression of increase in size of a case member.SOLUTION: A damper device includes a frame 2 in which an opening 210 is provided in a frame section 21 orthogonal to a partition plate 20, a baffle rotatably supported by the frame 2, a drive mechanism 6, and a case member 3 provided with a bottom plate section 31 that forms a space 30 in which the drive mechanism 6 is disposed between the partition plate 20 and the bottom plate section 31. In the drive mechanism 6, a connector terminal having a front end facing the opposite side of the partition plate 20 is held on a geared motor, and a connector insertion opening is formed in the bottom plate section 31 so as to expose the connector terminal facing the opposite side of the partition plate 20. The drive mechanism 6 includes a motor section, an output member 69 connected to the baffle, and a gear transmission mechanism that transmits rotation of the motor section to the output member 69. The connector terminal, the motor section, and the output member 69 are arranged in this order so that at least a part of each overlaps with the others in the Y direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a damper device and a refrigerator.

Background Art

[0002] A damper device disposed in a cold air passage or the like of a refrigerator includes a frame provided with an opening in a frame portion orthogonal to a partition plate, a baffle rotatably supported by the frame, a drive mechanism for driving the baffle, and a case member coupled to the frame so as to cover the partition plate from the side opposite to the frame portion. A drive mechanism is disposed between the partition plate and the bottom plate portion of the case member. Regarding such a damper device, in the drive mechanism, a structure has been proposed in which a motor shaft of a motor portion is directly connected to a baffle, and a connector insertion port for exposing a connector terminal held by the motor portion toward the side opposite to the partition plate is provided in the bottom plate portion (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the damper device described in Patent Document 1, the configuration of the drive mechanism is not specifically disclosed, and depending on the configuration of the drive mechanism, there is a problem that the case member becomes large in the rotational axis direction of the baffle.

[0005] In view of the above problems, an object of the present invention is to provide a damper device and a refrigerator that suppress the enlargement of the case member.

Means for Solving the Problems

[0006] In order to solve the above problems, the damper device according to the present invention includes a frame provided with an opening in a frame portion orthogonal to the partition plate, a baffle rotatably supported by the frame for opening and closing the opening, a drive mechanism for driving the baffle, and a bottom plate portion coupled to the frame so as to cover the partition plate from the side opposite to the frame portion, and configuring a space in which the drive mechanism is disposed between the bottom plate portion and the partition plate. A case member, and a motor portion that is a drive source of the drive mechanism is held by the case member with a motor shaft facing the partition plate side, and the drive mechanism includes the motor portion, an output member connected to the baffle, and a gear transmission mechanism that transmits the rotation of the motor portion to the output member. The bottom plate portion is provided with a connector insertion port for exposing a connector terminal held by the motor portion toward the side opposite to the partition plate, and the connector terminal, the motor portion, and the output member are arranged such that at least a part of each other overlaps in a predetermined direction in this order.

[0007] In the present invention, since the connector terminal, the motor portion, and the output member are arranged such that at least a part of each other overlaps in a predetermined direction in this order, compared with the case where the connector terminal, the motor portion, and the output member are not arranged to overlap in the predetermined direction, the dimension in the direction orthogonal to the predetermined direction of the case member can be reduced.

[0008] In the present invention, the output member includes a shaft portion connected to the baffle and rotating about the rotation center axis of the baffle, and the connector terminal, the stator of the motor portion, and the shaft portion of the output member are arranged such that at least a part of each other overlaps in the predetermined direction It is preferably arranged. In this way, the dimension in the direction orthogonal to the predetermined direction of the case member can be made smaller.

[0009] In the present invention, the gear transmission mechanism includes a gear that transmits the rotation of the motor unit to the output member, and it is preferable that the gear of the gear transmission mechanism and the shaft portion of the output member are arranged so that at least a part of them overlaps with each other in the predetermined direction. In this way, the dimension of the case member in the direction orthogonal to the predetermined direction can be made smaller.

[0010] In the present invention, the opening is a rectangle having a long side extending in a first direction along the rotation central axis of the baffle and a short side extending in a second direction orthogonal to the first direction, and the predetermined direction is preferably the second direction. In this way, the direction orthogonal to the predetermined direction of the case member becomes the front-rear direction of the damper device that is orthogonal to the first direction and the second direction respectively, so that the thickness of the damper device can be miniaturized.

[0011] In the present invention, the case member includes positioning portions for positioning the case member and the partition plate. The positioning portions are provided in two in a state of being separated from each other in the direction orthogonal to the predetermined direction, and are preferably arranged between the motor unit and the output member in the predetermined direction. In this way, since the positioning portions are close to the motor unit and the output member, the rotation of the motor unit is likely to be smoothly transmitted to the output member. Also, thereby, since the positioning portions are arranged between the motor unit and the output member which are likely to become dead spaces, the dimension of the case member in the direction orthogonal to the predetermined direction can be made smaller.

[0012] The damper device according to the present invention can be used in a refrigerator. The refrigerator has a cooler and a storage chamber to which the cool air generated by the cooler is supplied, and the damper device is arranged at the cool air intake in the storage chamber.

Effects of the Invention

[0013] In the present invention, since a connector insertion port for exposing the connector terminal held by the motor unit toward the side opposite to the partition plate of the frame is provided in the bottom plate portion of the case member, power can be supplied to the motor unit via the connector. Therefore, there is no need to route the lead wire between the bottom plate portion and the partition plate. Further, since the motor unit is held by the case member with the motor shaft facing the side of the partition plate, the connector terminal held by the motor unit is located at a position close to the bottom plate portion. Therefore, the insertion of the connector is easy, for example, it is not necessary to insert the connector deeply.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0015] With reference to the drawings, a damper device for a refrigerator to which the present invention is applied will be described. The following description In the description, the rotation center axis of the baffle 4 is defined as L, the direction along the rotation center axis L is defined as the X direction (first direction), the direction in which the opening 210 faces is defined as the Z direction, and the direction orthogonal to the X direction and the Z direction is defined as the Y direction (second direction). Also, one side in the X direction is defined as X1, the other side in the X direction is defined as X2, one side in the Y direction is defined as Y1, the other side in the Y direction is defined as Y2, one side in the Z direction is defined as Z1, and the other side in the Z direction is defined as Z2 for the description.

[0016] (Overall Structure) FIG. 1 is a perspective view of a damper device 1 to which the present invention is applied, as viewed from the side of the case member 3. FIG. 2 is a perspective view of the damper device 1 shown in FIG. 1, as viewed from the side of the frame 2. FIG. 3 is an exploded perspective view showing a state in which the baffle 4 and the like are removed from the damper device 1 shown in FIG. 1.

[0017] The damper device 1 shown in FIGS. 1, 2, and 3 includes a frame 2 provided with an opening 210 in a frame portion 21 orthogonal to the partition plate 20, a baffle 4 rotatably supported by the frame 2, and a case member 3 coupled to the frame 2 so as to cover the partition plate 20 from the side opposite to the frame portion 21. The frame 2 and the case member 3 are made of resin.

[0018] The case member 3 has a bottom plate portion 31 facing the partition plate 20 on the side opposite to the frame portion 21, and a rectangular tube portion 32 protruding from the bottom plate portion 31 toward the partition plate 20. The tube portion 32 has side plate portions 321 and 322 facing each other in the Z direction, and side plate portions 323 and 324 facing each other in the Y direction. The bottom plate portion 31 and the tube portion 32 are quadrilaterals in which the long side extends in the Y direction and the short side extends in the Z direction when viewed from the X direction. The partition plate 20 and the case member 3 are coupled by a hook portion 203 of the partition plate 20.

[0019] Frame 2 has a rectangular tube-shaped body portion 22 that protrudes from the outer edge of the frame portion 21 to the other side Z2 in the Z direction. The partition plate 20 is configured as a portion located on one side X1 in the X direction in the body portion 22. The body portion 22 has a side plate 25 that faces the partition plate 20 on the other side X2 in the X direction. Further, the frame 2 is provided with a rectangular tube-shaped seal plate portion 23 that protrudes from the edge of the opening 210 in the frame portion 21 toward the side where the baffle 4 is located.

[0020] The baffle 4 is rotatably supported by the frame 2 between the partition plate 20 and the side plate 25. More specifically, a first bearing portion 11 is formed between the end portion on the other side Y2 in the Y direction of the baffle 4 and the partition plate 20, and a second bearing portion 12 is formed between the end portion on the other side Y2 in the Y direction of the baffle 4 and the side plate 25. Therefore, the baffle 4 is rotatably supported by the frame 2 with the axis connecting the first bearing portion 11 and the second bearing portion 12 as the rotation center axis L.

[0021] The first bearing portion 11 includes a protrusion 24 that protrudes from the partition plate 20 toward the baffle 4, and a cylindrical portion 441 formed on the baffle 4 so that the protrusion 24 fits therein. The cylindrical portion 441 is configured to protrude from the end of the cylindrical portion 440 of the baffle 4 toward the partition plate 20. The second bearing portion 12 is constituted by a shaft hole 250 formed in the side plate 25 of the frame 2 and a shaft portion 451 that protrudes from the cylindrical portion 450 of the baffle 4 and fits into the shaft hole 250.

[0022] When the baffle 4 is driven by a drive mechanism 6 described later with reference to FIG. 4 and the like, it contacts the seal plate portion 23 to close the opening 210, and when it separates from the seal plate portion 23, it opens the opening 210. The baffle 4 has a resin-made opening and closing plate 40 that is larger in size than the opening 210, and a sheet-shaped elastic member 49 made of foamed polyurethane or the like attached to the surface of the opening and closing plate 40 on the side of the opening 210, and the elastic member 49 contacts the seal plate portion 23. The cylindrical portion 440 of the first bearing portion 11, the cylindrical portion 450 of the second bearing portion 12, the cylindrical portion 441, and the shaft portion 451 are formed in the opening and closing plate 40.

[0023] The damper device 1 is disposed, for example, inside a duct or the like that constitutes a cold air passage. Cold air flows through the opening 210 from the side opposite to the side where the baffle 4 is disposed with respect to the opening 210. Also, cold air may flow through the opening 210 from the side where the baffle 4 is disposed with respect to the opening 210.

[0024] (Configuration of the drive mechanism 6) FIG. 4 is an exploded perspective view showing the inside of the case member 3 shown in FIG. 1 and the like. FIG. 5 is a perspective view of the drive mechanism 6 and the like shown in FIG. 4. FIG. 6 is an exploded perspective view showing the structure of the case member 3 side of the partition plate 20 shown in FIG. 1 and the like. FIG. 7 is an exploded perspective view of the geared motor 60 shown in FIG. 4.

[0025] In FIGS. 4 and 5, in the case member 3, the bottom plate portion 31 constitutes a space 30 in which the drive mechanism 6 is disposed between the partition plate 20. In the case member 3, on the inner surfaces of the two side plate portions 321 and 322, positioning cylindrical portions 331 and 332 and columnar portions 351 and 352 having positioning shaft portions 351a and 352a formed thereon are formed, and on the inner surface of the side plate portion 323, a cylindrical portion 34 for shaft support is formed. On the inner surface of the side plate portion 324, two engaging plate portions 361 and 362 are formed. The cylindrical portions 331 and 332, the columnar portions 351 and 352, and the engaging plate portions 361 and 362 are connected to the bottom plate portion 31. On the inner surface of the bottom plate portion 31, a circular recess 371 in which the bottom of the geared motor 60 described later is disposed is formed. Also, in the case member 3, an engaging protrusion 325 is formed on the outer surface of the cylindrical portion 32. Here, the cylindrical portions 331 and 332 correspond to the positioning portions of the present invention.

[0026] As shown in FIG. 6, on the surface 20a of the partition plate 20 opposite to the frame portion 21, there are shaft portions 201 and 202 that fit into the cylindrical portions 331 and 332 of the case member 3, cylindrical portions 205 and 206 into which the shaft portions 351a and 352a of the columnar portions 351 and 352 of the case member 3 fit, and a shaft hole 204 that overlaps the cylindrical portion 34 for the shaft of the case member 3 in the X direction. Further, on the partition plate 20, there are formed a hook portion 203 that engages with the protrusion 325 of the case member 3, an annular portion 207, a first stopper 208 that defines the fully open position, and a second stopper 209 that defines the fully closed position.

[0027] As shown below with reference to FIGS. 4, 5, and 7, the drive mechanism 6 includes a motor portion 61 that is a drive source, an output member 69 connected to the baffle 4, and a gear transmission mechanism 65 that transmits the rotation of the motor portion 61 to the output member 69. In this embodiment, in the drive mechanism 6, a geared motor 60 in which the motor portion 61 and the gear transmission mechanism 65 are integrated is held by the case member 3 with the motor shaft 604 facing the partition plate 20 side. In the geared motor 60, a connector terminal 68 is held by the motor portion 61 with its tip facing away from the partition plate 20.

[0028] More specifically, the geared motor 60 includes a bottomed cylindrical metal motor case 602, an end plate 601 that closes the open end of the motor case 602, a cylindrical stator 603 disposed inside the motor case 602, a rotor (not shown) disposed inside the stator 603, and a base plate 605 disposed between the end plate 601 and the stator 603. The motor portion 61, which is a stepping motor, is constituted by the motor case 602, the rotor, and the stator 603. A gear transmission mechanism 65 is formed between the base plate 605 and the end plate 601, and the gear transmission mechanism 65 is integrated with the motor portion 61.

[0029] In the rotor, a pinion 64 is fixed to a motor shaft 604 facing the side of the partition plate 20. The gear transmission mechanism 65 includes a first compound gear 651 meshing with the pinion 64, a second compound gear 652 meshing with the first compound gear 651, a third compound gear 653 meshing with the second compound gear 652, a fourth compound gear 654 meshing with the third compound gear 653, and an output gear 655 having a gear 656 meshing with the fourth compound gear 654. In the output gear 655, a gear 66 is connected to a shaft portion 657 protruding from the end plate 601. Therefore, the rotation of the rotor is decelerated by the gear transmission mechanism 65 and transmitted to the gear 66.

[0030] Here, a terminal block 607 is integrally formed on the insulator 608 of the stator 603 on the radially outer side. The terminal block 607 protrudes radially outward through a notch 602a of the motor case 602. A plurality of connector terminals 68 are held on the terminal block 607 with their tips facing away from the partition plate 20. The plurality of connector terminals 68 are electrically connected to the coil wires constituting the stator coil 606. Engagement claws 609 are formed on both circumferential sides of the terminal block 607. The engagement claws 609 hold a cover 67 integrally formed with a connector housing 670 that covers the connector terminals 68 from the radially outer side.

[0031] When the geared motor 60 is disposed inside the case member 3, engagement plate portions 361 and 362 of the case member 3 hold the terminal block 607 and the engagement claws 609 from both circumferential sides. As a result, the geared motor 60 has the motor portion 61 held by the bottom plate portion 31 of the case member 3. At that time, holes 601a and 601b formed in the end plate 601 are fitted onto shaft portions 351a and 352a of columnar portions 351 and 352 of the case member 3.

[0032] The output member 69 includes a first shaft portion 691 that fits into a cylindrical portion 34 for the shaft of the case member 3, a sector gear 690 that protrudes radially from the first shaft portion 691, and a second shaft portion 692 that protrudes from the sector gear 690 on the side opposite to the first shaft portion 691. The output member 69 is rotatably supported by the bottom plate portion 31 via the cylindrical portion 34 of the case member 3.

[0033] Therefore, all of the drive mechanism 6 can be assembled to the case member 3. Further, after all of the drive mechanism 6 is assembled to the case member 3, when the case member 3 is placed over the partition plate 20, the protrusion 325 of the case member 3 engages with the hook portion 203 of the partition plate 20, and the case member 3 and the partition plate 20 are coupled. At that time, the shaft portions 201, 201 of the partition plate 20 fit into the cylindrical portions 331, 332 of the case member 3, and the shaft portions 351a, 352a of the case member 3 fit inside the cylindrical portions 205, 206 of the partition plate 20. Further, the shaft portion 657 of the output gear 655 is located inside the annular portion 207 of the partition plate 20. Also, the second shaft portion 692 of the output member 69 passes through the shaft hole 204 of the partition plate 20. Therefore, if the baffle 4 is attached to the frame 2, the second shaft portion 692 of the output member 69 fits into the connection hole formed in the end face of the cylindrical portion 440 of the baffle 4, so that the output member 69 and the baffle 4 can be connected.

[0034] Thus, in the damper device 1 of this embodiment, the geared motor 60 is held by the case member 3 coupled to the frame 2 so as to cover the partition plate 20 of the frame 2 from the side opposite to the frame portion 21. For this reason, with respect to the frame 2, since there is no need to hold the geared motor 60, the structure of the frame 2 can be simplified. Also, since the geared motor 60 is used, in the case member 3 as well, there is no need to have a structure in which the plurality of gears of the gear transmission mechanism 65 can rotate individually. Therefore, the structure of the case member 3 can also be simplified.

[0035] Also, in this embodiment, the output member 69 is rotatably supported by the case member 3. Further, since all of the gear transmission mechanism 65 is provided on the case member 3 side, there are advantages such as that the meshing between the gears of the gear transmission mechanism 65 and the sector gear 690 of the output member 69 can be performed with high accuracy.

[0036] (Configuration of the connector insertion port 310) On the bottom plate portion 31 of the case member 3, there is provided a connector insertion port 310 for exposing the connector terminal 68 described with reference to FIG. 7 toward the side opposite to the partition plate 20. In the present embodiment, the connector insertion port 310 has a structure in which an end portion of the bottom plate portion 31 is cut out.

[0037] Inserted into the connector insertion port 310 is a first connector 16 to which one end portion 851 of a plurality of motor lead wires 85 is connected, and the plurality of motor lead wires 85 are each electrically connected to the connector terminal 68. Also, the other end portion 852 of the plurality of motor lead wires 85 is connected to the second connector 17 shown in FIG. 1. Therefore, if the second connector 17 is connected to the upper control device, a drive signal can be supplied to the motor unit 61 via the second connector 17, the motor lead wires 85, and the connector terminal 68. The motor lead wires 85 have a structure in which the conducting wires are covered by an insulating layer.

[0038] Thus, in the damper device 1 of the present embodiment, the bottom plate portion 31 of the case member 3 is provided with a connector insertion port 310 for exposing the connector terminal 68 for supplying power to the motor unit 61 toward the side opposite to the partition plate 20 of the frame 2. For this reason, the insertion of the first connector 16 into the connector insertion port 310 is easier than in the mode where the connector insertion port 310 opens at a position far from the bottom plate portion 31 toward the partition plate 20 on the side surface of the case member 3.

[0039] Also, the connector terminal 68 is held by the geared motor 60 with its tip facing the side opposite to the partition plate 20. For this reason, it is not necessary to connect the motor unit 61 and the connector terminal 68 with a lead wire, so the work of routing the lead wire is not required. Therefore, the productivity of the damper device 1 can be increased.

[0040] Also, different from the structure in which the motor shaft of the motor unit 61 is directly connected to the baffle, in this embodiment, since the rotation of the motor unit 61 is transmitted to the baffle 4 via the gear transmission mechanism 65 and the output member 69, the degree of freedom in design with respect to the position of the motor unit 61 can be increased. Therefore, the degree of freedom in design can also be increased with respect to the position of the connector terminal 68 held by the motor unit 61. Therefore, the degree of freedom in design with respect to the position where the connector insertion port 310 is arranged, such as providing the connector insertion port 310 at the end of the bottom plate portion 31, can be increased.

[0041] (Configuration such as heater 9) FIG. 8 is a perspective view of the engaging portion 76 and the like with respect to the heater lead wire 80 shown in FIG. 1. As shown in FIG. 4, on the surface of the frame portion 21 of the frame 2 on the side where the baffle 4 is located, the heater 9 is attached so as to surround the opening 210. The heater 9 has a sheet shape formed between two sheets 96 and 97. The heater 9 is fixed to the frame portion 21 in a state of being positioned by the holes 961 and 971 of the sheets 96 and 97 and the protrusion 215 of the frame portion 21. Therefore, it is possible to prevent the baffle 4 and the frame portion 21 from being adsorbed by freezing. Power supply portions 91 and 92 are formed at each of both ends of the heater 9, and the power supply portions 91 and 92 include terminal portions 910 and 920 protruding from the side of the heater 9 to the other side Z2 in the Z direction. As shown in FIG. 2, a plurality of heater lead wires 80 are connected to the power supply portions 91 and 92. The heater lead wire 80 has a structure in which a conductor is covered with an insulating layer.

[0042] In this embodiment, the number of heater lead wires 80 is two, and the plurality of heater lead wires 80 are composed of a first lead wire 81 and a second lead wire 82. One end portions 811 and 821 of the first lead wire 81 and the second lead wire 82 are connected to the power supply portions 91 and 92, respectively, and the other end portions 812 and 822 are connected to the second connector 17 shown in FIG. 1. Therefore, if the second connector 17 is connected to the upper control device, power can be supplied to the heater 9 via the second connector 17 and the heater lead wire 80.

[0043] In this embodiment, each of the first lead wire 81 and the second lead wire includes a first extending portion 816, 826 extending along the surface on the frame portion 21 side of the partition plate 20 at a position separated from the rotation center axis L to one side Y1 in the Y direction, a second extending portion 817, 827 extending along the outer surface of the case member 3 or the frame 2, and a third extending portion 818, 828 extending away from the case member 3. Here, the first extending portions 816, 826 and the second extending portions 817, 827 extend within the guide groove 7 provided in the case member 3 or the frame 2. In this embodiment, the guide groove 7 includes a first groove 71 in which the first lead wire 81 extends and a second groove 72 in which the second lead wire 82 extends.

[0044] As shown in FIGS. 2 and 8, each of the first groove 71 and the second groove 72 includes a first portion 711, 721 extending from the boundary portion with the frame portion 21 to the boundary portion with the side plate portion 321 on the surface 20b on the frame portion 21 side of the partition plate 20, and a second portion 712, 722 obliquely extending from the boundary portion with the partition plate 20 to the boundary portion with the bottom plate portion 31 in the side plate portion 321 of the case member 3. In the first groove 71, the first portion 711 and the second portion 712 are connected at the corner formed by the surface on the frame portion 21 side of the partition plate 20 and the side plate portion 321. In the second groove 72, the first portion 721 and the second portion 722 are connected at the corner formed by the surface on the frame portion 21 side of the partition plate 20 and the side plate portion 321.

[0045] In the first groove 71, the first extending portion 816 of the first lead wire 81 extends inside the first portion 711, and the second extending portion 817 of the first lead wire 81 extends inside the second portion 712. In the second groove 72, the first extending portion 826 of the second lead wire 82 extends inside the first portion 721, and the second extending portion 827 of the second lead wire 82 extends inside the second portion 722. Here, the second portion 712 of the first groove 71 and the second portion 722 of the second groove 72 are connected near the end on the bottom plate portion 31 side of the side plate portion 321. In the first lead wire 81 and the second lead wire 82, the fourth extending portions 815, 825 extending between the second extending portions 817, 827 and the third extending portions 818, 828, and the third extending portions 818, 828 extend together in a bundle.

[0046] As will be described below with reference to FIG. 8, the case member 3 and the frame 2 are configured with engaging portions 76 that engage with the fourth extending portions 815 and 825 of the first lead wire 81 and the second lead wire 72. Further, the case member 3 and the frame 2 are configured with clamping portions 77 that clamp and hold the fourth extending portions 815 and 825 of the first lead wire 81 and the second lead wire 72 from both sides.

[0047] In this embodiment, the clamping portion 77 includes an end portion 315 of the bottom plate portion 31 exposed from the notch portion of the side plate portion 321, and a protruding portion 326 protruding from the side plate portion 321 so as to overlap the end portion 315. The fourth extending portions 815 and 825 of the first lead wire 81 and the second lead wire 82 are held by the clamping portion 77 by being clamped between the second side plate portion 321 and the end portion 315 of the bottom plate portion 31, and between the protruding portion 326 of the second side plate portion 321 and the end portion 315 of the bottom plate portion 31. In this embodiment, the protruding portions 326 are formed at two locations.

[0048] Further, the engaging portion 76 is configured by providing a gap between the bottom plate portion 31 and the side plate portion 324 so as to form a protruding portion 317 that faces the bottom plate portion 31 with a gap via the side plate portion 324. In such an engaging portion 76, the protruding portion 317 engages with the fourth extending portions 815 and 825 by allowing a portion between the portion clamped by the clamping portion 327 and the third extending portions 818 and 828 of the fourth extending portions 815 and 825 of the first lead wire 81 and the second lead wire 82 to pass between the end portion of the side plate portion 324 and the protruding portion 317.

[0049] Thus, in the damper device 1 of this embodiment, the first extending portions 816 and 826 and the second extending portions 817 and 827 of the first lead wire 81 and the second lead wire 82 included in the heater lead wire 80 extend in the first groove 71 and the second groove 72 provided in the case member 3 or the frame 2. Therefore, even if the third extending portions 818 and 828 of the first lead wire 81 and the second lead wire 82 are pulled, the holding force by the first groove 71 and the second groove 72 resists such a force, so that a large force is not applied to the connection portion of the first lead wire 81 and the second lead wire 82 with the heater 9. Therefore, it is possible to suppress the first lead wire 81 and the second lead wire 82 from detaching from the heater 9. This can be suppressed.

[0050] Further, the fourth extending portions 815 and 825 of the first lead wire 81 and the second lead wire 82 are held by the engaging portion 76 and the clamping portion 77. Therefore, even if the third extending portions 818 and 828 of the first lead wire 81 and the second lead wire 82 are pulled, the holding force by the engaging portion 76 and the clamping portion 77 resists such a force, so that a large force is not applied to the connection portion of the first lead wire 81 and the second lead wire 82 with the heater 9. Therefore, it is possible to suppress the first lead wire 81 and the second lead wire 82 from detaching from the heater 9. Further, the engaging portion 76 and the clamping portion 77 hold the first lead wire 81 and the second lead wire 82 together in two. For this reason, the routing of the first lead wire 81 and the second lead wire 82 can be efficiently performed, and the holding force of the engaging portion 76 and the clamping portion 77 is large.

[0051] (Configuration of Refrigerator) FIG. 9 is an explanatory view of a refrigerator 100 provided with the damper device 1 shown in FIG. 1. In the refrigerator 100 shown in FIG. 9, the refrigerator main body 110 includes a plurality of storage chambers 111 and a cold air duct 112 that supplies cold air to the plurality of storage chambers 111. A damper device 1 to which the present invention is applied is provided at a cold air intake port 113 that communicates the cold air duct 112 and the storage chamber 111. Further, the refrigerator main body 110 includes a cooler 114 that generates cold air, a fan 115 disposed in the cold air duct 112, and a control device 120. The control device 120 controls the opening and closing operation of the damper device 1 based on a signal from a sensor (not shown) provided in the storage chamber 111 to adjust the supply timing and supply amount of cold air to the storage chamber 111.

[0052] (Other embodiments) The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, the present invention may be applied when the partition plate 20 is separate from the frame 2. Further, the damper device 1 in the above-described embodiment is for a refrigerator, but is not necessarily limited to a damper device used in a refrigerator.

Explanation of reference numerals

[0053] 1… Damper device, 2… Frame, 3… Case member, 4… Baffle, 6… Driving mechanism, 7… Guide groove, 9… Heater, 11… First bearing portion, 12… Second bearing portion, 16… First connector, 17… Second connector, 20… Partition plate, 21… Frame portion, 22… Barrel portion, 23… Seal plate portion, 24… Projection, 25… Side plate, 30… Space, 31… Bottom plate portion, 32… Cylindrical portion, 40… Opening / closing plate, 49… Elastic member, 60… Geared motor, 61… Motor portion, 65… Gear transmission mechanism, 68… Connector terminal, 69… Output member, 71… First groove, 72… Second groove, 76… Engaging portion, 77… Clamping portion, 80… Heater lead wire, 81… First lead wire, 82… Second lead wire, 85… Motor lead wire, 91, 92… Power supply portion, 100… Refrigerator, 110… Refrigerator body, 111… Storage room, 112… Cold air duct, 113… Cold air intake port, 114… Cooling machine, 115… Fan, 120… Control device, 310… Connector insertion port, 317, 326… Protrusion, 321, 322, 323, 324… Side plate portion, 361, 362… Engaging plate portion, 601… End plate, 602… Motor case, 602a… Notch, 603… Stator, 604… Motor shaft, 605… Floor, 606… Stator coil, 607… Terminal block, 608… Insulator, 655… Output gear, 670… Connector housing, 690… Sector gear, 691… First shaft portion, 692… Second shaft portion, 711, 721… First part, 712, 722… Second part, 910, 920… Terminal portion, L… Rotation center axis

Claims

1. A frame provided with an opening in a frame portion orthogonal to the partition plate, a baffle rotatably supported by the frame for opening and closing the opening, a drive mechanism for driving the baffle, a case member having a bottom plate portion coupled to the frame so as to cover the partition plate from the side opposite to the frame portion, and constituting a space in which the drive mechanism is disposed between the case member and the partition plate, and having, a motor portion which is a drive source of the drive mechanism is held by the case member with the motor shaft facing the partition plate side, the bottom plate portion is provided with a connector insertion port for exposing a connector terminal held by the motor portion toward the side opposite to the partition plate, the drive mechanism includes the motor portion, an output member connected to the baffle, and a gear transmission mechanism for transmitting the rotation of the motor portion to the output member, the damper device, wherein the connector terminal, the motor portion, and the output member are arranged such that at least a part of each of them overlaps with each other in a predetermined direction in this order.

2. the output member includes a shaft portion connected to the baffle and rotating about the rotation center axis of the baffle, the damper device according to claim 1, wherein the connector terminal, the stator of the motor portion, and the shaft portion of the output member are arranged such that at least a part of each of them overlaps with each other in the predetermined direction.

3. the gear transmission mechanism includes a gear for transmitting the rotation of the motor portion to the output member, the damper device according to claim 2, wherein the gear of the gear transmission mechanism and the shaft portion of the output member are arranged such that at least a part of each of them overlaps with each other in the predetermined direction.

4. the opening is a rectangle having a long side extending in a first direction along the rotation center axis of the baffle and a short side extending in a second direction orthogonal to the first direction, the damper device according to any one of claims 1 to 3, wherein the predetermined direction is the second direction.

5. the case member includes a positioning portion for positioning the case member and the partition plate, the damper device according to any one of claims 1 to 4, wherein two positioning portions are provided so as to be separated from each other in a direction orthogonal to the predetermined direction, and are disposed between the motor portion and the output member in the predetermined direction.

6. A refrigerator comprising the damper device defined in any one of claims 1 to 5, a cooler, a storage chamber to which the cold air generated by the cooler is supplied, and having wherein the damper device is disposed at an intake port of cold air in the storage chamber.

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