CN116625051A

CN116625051A - Air door device and refrigerator

Info

Publication number: CN116625051A
Application number: CN202310141065.7A
Authority: CN
Inventors: 横江悟
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Sankyo Corp
Priority date: 2022-02-18
Filing date: 2023-02-16
Publication date: 2023-08-22
Also published as: JP2023120657A

Abstract

A damper device and a refrigerator capable of reducing noise generated by vibration of the damper device using a motor as a driving source. The damper device (1) has a frame (2) and a housing (3), the frame has an opening (20) that is opened and closed by a shutter (4), and a drive mechanism (6) is accommodated between the housing and a partition (23). The housing is provided with a bottom (31) and a tube (32) that face the partition plate (23). A motor holding part (36) surrounding the outer periphery of a motor (61) and a shaft supporting part (35) arranged between the motor holding part and a third side plate (323) are arranged on the inner side of the cylinder part, and the motor holding part comprises: a first rib (37) extending in the Z direction (second direction) between the motor holding portion and the shaft supporting portion; and second ribs (38) intersecting the first ribs on both sides of the shaft support section in the Z direction and connected to the third side plate (323) and the motor holding section.

Description

Air door device and refrigerator

Technical Field

The invention relates to a damper device and a refrigerator.

Background

The damper device disposed in a cool air passage of a refrigerator or the like includes: the device includes a frame having a frame portion (an end plate portion and a main body portion) provided with an opening, a baffle rotatably supported by the frame, and a driving mechanism for driving the baffle, wherein the driving mechanism is accommodated inside a housing member coupled to a baffle provided at an end portion of the frame portion. The driving mechanism is provided with: a stepping motor disposed inside the housing member; and a gear train for transmitting rotation of the stepping motor to the shutter. The sector gear arranged at the final stage of the gear train is connected with a baffle plate.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2019-211195

In the damper device described in patent document 1, the drive mechanism is held inside the housing. When the damper device is driven, if the vibration of the motor is easily transmitted to the housing, there is a problem in that noise due to the vibration becomes large.

Disclosure of Invention

In view of the above, an object of the present invention is to reduce noise caused by vibration of a damper device using a motor as a driving source.

In order to solve the above problems, a damper device according to the present invention includes: a frame including a frame portion surrounding an opening portion and a partition plate disposed at an end portion of the frame portion; a shutter rotatably supported by the frame and opening and closing the opening; a driving mechanism including a motor and an output member for transmitting rotation of the motor to the shutter; and a case that is coupled to the partition plate and that accommodates the driving mechanism between the case and the partition plate, the case including: a bottom portion opposite to the partition plate; a first side plate and a second side plate that face each other in a second direction intersecting the first direction, with a direction from the partition plate toward the bottom portion as one side of the first direction; a third side plate and a fourth side plate that connect the first side plate and the second side plate and are opposite in a third direction intersecting the first direction and intersecting the second direction; a motor holding portion protruding from the bottom portion to the other side in the first direction between the first side plate and the second side plate, and surrounding an outer periphery of the motor; a shaft support portion that protrudes from the bottom portion to the other side in the first direction between the motor holding portion and the third side plate, and that supports the output member so as to be rotatable; a first rib extending in the second direction between the motor holding portion and the shaft supporting portion and connected to the first side plate and the second side plate; and a second rib extending in the third direction on both sides of the second direction of the shaft support portion, intersecting the first rib, and connected to the third side plate and the motor holding portion.

In the present invention, the motor is held by the motor holding portion having a shape surrounding the outer periphery of the motor, inside the case housing the driving mechanism with the partition plate. In addition, between the shaft support portion supporting the output member and the motor holding portion, a first rib extending in the second direction intersects a second rib extending in the third direction, opposite side plates are connected to each other by the first rib, and the motor holding portion is connected to the side plates by the second rib. Therefore, since the space in the housing is subdivided, the rigidity of the housing is improved, and the housing is less likely to vibrate. Therefore, the vibration of the motor is not easily transmitted to the housing, and therefore, noise caused by the vibration of the housing can be suppressed.

In the present invention, it is preferable that the motor support member further includes a third rib extending in the third direction between the shaft support member and the motor holding member, and connected to the motor holding member and the shaft support member. In this way, since the shaft support portion is connected to the motor holding portion, the space in the housing can be further subdivided, and the rigidity of the housing can be further improved. Therefore, noise caused by vibration of the housing can be suppressed.

In the present invention, it is preferable that the shaft support portion is connected to the third side plate. In this way, the motor holding portion is connected to the third side plate via the shaft support portion, so that the rigidity of the housing can be further improved. Therefore, noise caused by vibration of the housing can be suppressed.

In the present invention, the motor holding portion is preferably connected to the first side plate and the second side plate. In this way, the rigidity of the portion close to the motor can be improved. Therefore, the vibration of the motor is not easily transmitted to the housing, and therefore, noise caused by the vibration of the housing can be suppressed.

In the present invention, the motor holding portion is preferably connected to the fourth side plate. In this way, the rigidity of the portion close to the motor can be improved. Therefore, the vibration of the motor is not easily transmitted to the housing, and therefore, noise caused by the vibration of the housing can be suppressed.

In the present invention, the bottom portion preferably includes: a bottom plate that blocks an end of the motor holding portion on the opposite side of the separator; and a partition plate connected to the motor holding portion, the first side plate, the second side plate, the third side plate, and the fourth side plate, and located on the partition plate side with respect to the bottom plate, the first rib and the second rib protruding from the partition plate to the other side in the first direction. In this way, since the portion of the motor holding portion that is offset from the bottom plate in the first direction is supported via the partition plate, rigidity is improved, and vibration of the motor is less likely to be transmitted. Therefore, noise caused by vibration of the housing can be suppressed.

In the present invention, it is preferable that the bottom portion includes a first outer surface rib and a second outer surface rib protruding from the partition plate to one side in the first direction, the first outer surface rib extending in the second direction and being connected to the first side plate and the second side plate, and the second outer surface rib extending in the third direction and intersecting the first outer surface rib and being connected to the third side plate and the motor holding portion. In this way, by adopting a structure in which the bottom is divided by the ribs, the weight of the housing can be reduced while ensuring the rigidity of the bottom.

The damper device of the present invention can be used for a refrigerator having a cooler and a storage chamber to which cool air generated by the cooler is supplied, and is disposed at a cool air suction port of the storage chamber.

Drawings

Fig. 1 is a perspective view of a damper device to which the present invention is applied, viewed from the opposite direction from a damper.

Fig. 2 is a perspective view of the damper device shown in fig. 1, as viewed from the baffle side.

Fig. 3 is an exploded perspective view of the damper device shown in fig. 1.

Fig. 4 is an exploded perspective view of the diaphragm, drive mechanism and housing.

Fig. 5 is an exploded perspective view of the geared motor.

Fig. 6 is a plan view of the housing and the driving mechanism viewed from the partition plate side, and a plan view of the housing viewed from the partition plate side.

Fig. 7 is a cross-sectional perspective view of the housing (a cross-sectional perspective view cut at the A-A position of fig. 6 (b)).

Fig. 8 is a cross-sectional perspective view of the housing (a cross-sectional perspective view cut at the B-B position of fig. 6 (B)).

Fig. 9 is an explanatory view of a refrigerator provided with the damper device shown in fig. 1.

Detailed Description

Hereinafter, a damper device for a refrigerator to which the present invention is applied will be described with reference to the accompanying drawings. In the present specification, XYZ is a direction orthogonal to each other. The direction along the rotation center axis L of the shutter 4 is set as the X direction. The opening 20 opened and closed by the shutter 4 is oriented in the Z direction. The X direction is the first direction, the Z direction is the second direction, and the Y direction is the third direction. The description will be given with one side in the X direction being X1, the other side in the X direction being X2, one side in the Y direction being Y1, the other side in the Y direction being Y2, one side in the Z direction being Z1, and the other side in the Z direction being Z2.

(integral structure)

Fig. 1 is a perspective view of a damper device 1 to which the present invention is applied, as seen from the side opposite to a damper 4. Fig. 2 is a perspective view of the damper device 1 of fig. 1 viewed from the baffle 4 side. Fig. 3 is an exploded perspective view of the damper device 1 shown in fig. 1. Fig. 4 is an exploded perspective view of the partition plate 23, the driving mechanism 6, and the housing 3. Fig. 5 is an exploded perspective view of the geared motor 60. Fig. 6 (a) is a plan view of the housing 3 and the driving mechanism 6 viewed from the partition plate 23 side. Fig. 6 (b) is a plan view of the housing 3 viewed from the partition plate 23 side. Fig. 7 is a sectional perspective view of the housing 3 (a sectional perspective view cut at A-A position of fig. 6 (b)). Fig. 8 is a sectional perspective view of the housing 3 (a sectional perspective view cut at the B-B position of fig. 6 (B)).

As shown in fig. 1, 2, and 3, the damper device 1 includes: a frame 2 provided with an opening 20 that opens in the Z direction; a baffle 4 rotatably supported by the frame 2; and a housing 3 coupled to the frame 2. The frame 2 and the housing 3 are made of resin. The shutter 4 rotates about a rotation center axis L extending in the X direction, and opens and closes the opening 20.

The frame 2 includes: a frame 21 provided with an opening 20; a square tubular main body 22 protruding in the Z1 direction from the outer edge of the frame 21; and a partition 23 integrally formed with the X1-direction side plate portion of the main body 22. The case 3 faces the partition 23 from the X1 direction. The case 3 and the partition 23 are coupled by engaging the hooks 24 extending from the edge of the partition 23 in the X1 direction with the protrusions 30 formed on the side surfaces of the case 3. The partition 23 and the housing 3 constitute a rectangular parallelepiped frame that houses the driving mechanism 6 that drives the shutter 4.

The frame 2 includes a side plate 25 disposed at an end of the frame portion 21 on the X2 side and facing the separator 23 in the X direction. The frame 2 further includes a square tubular sealing plate portion 26, and the sealing plate portion 26 protrudes from the edge of the opening 20 toward the side (Z1 direction) of the baffle plate 4 at the frame portion 21. A heater (not shown) surrounding the sealing plate portion 26 is attached to the frame portion 21. The damper device 1 generates heat by energizing the heater, thereby preventing the damper 4 from being unable to move due to freezing.

The baffle 4 is rotatably supported between the partition plate 23 and the side plate 25. A cylindrical portion 41 protruding toward the X1 side and a cylindrical portion 42 protruding toward the X2 side are formed at the edge of the shutter 4 on the Y2 side. A coupling hole (not shown) is formed in the front end of the cylindrical portion 41, and the coupling hole is fitted into the front end of the shaft portion 691 of the output member 69 protruding from the shaft hole 27 penetrating the separator 23 toward the baffle plate 4. A shaft portion 44 is formed at the front end of the cylindrical portion 42, and is fitted into a shaft hole (not shown) formed in the side plate 25. Therefore, the baffle 4 is rotatably supported on the frame 2 with an axis line connecting the center of the shaft hole 27 of the partition plate 23 and the center of the shaft hole of the side plate 25 as a rotation center axis L.

The baffle 4 has: a resin opening/closing plate 45 larger than the opening 20; and a sheet-like elastic member 46 made of foamed polyurethane or the like, which is adhered to the surface of the opening portion 20 side of the opening/closing plate 45. The shutter 4 is rotated about the rotation center axis L by a driving mechanism 6 described later, and is moved to a closed position closing the opening 20 and an open position opening the opening 20. In the closed position, the resilient member 46 is in contact with the seal plate portion 26.

The damper device 1 is disposed inside a duct or the like constituting a cool air passage, for example. The cool air flows through the opening 20 from the side opposite to the side where the baffle 4 is disposed with respect to the opening 20. The cool air may flow through the opening 20 from the side where the baffle 4 is disposed with respect to the opening 20.

(drive mechanism 6)

As shown in fig. 3 and 4, the driving mechanism 6 is accommodated between the housing 3 and the partition 23. The drive mechanism 6 includes a gear motor 60 and an output member 69 driven by the gear motor 60. The output member 69 includes: a shaft portion 691 fitted to the shaft support portion 35 provided in the housing 3; and a sector gear 692 extending radially from the shaft portion 691. The output member 69 is rotatably supported by the shaft support portion 35 of the housing 3. As described above, the front end portion of the shaft portion 691 of the output member 69 extending in the X2 direction penetrates the shaft hole 27 provided in the partition plate 23, and is connected to the baffle plate 4.

As shown in fig. 5, the gear motor 60 has a motor 61 and a gear transmission mechanism 62 that transmits rotation of the motor 61 to an output member 69. The motor 61 includes: a metallic motor case 63 having a bottomed cylindrical shape; an end plate 64 blocking the open end of the motor housing 63; a cylindrical stator 65 disposed inside the motor case 63; a rotor (not shown) disposed inside the stator 65; and a partition member 66 disposed between the end plate 64 and the stator 65, and the motor 61 including the stepping motor is constituted by the motor housing 63, the rotor, and the stator 65.

The gear transmission mechanism 62 includes: a gear train 621 composed of a plurality of gears disposed between the partition member 66 and the end plate 64; and an output wheel 622 driven via a train 621. The rotation of the rotor is decelerated by the gear train 621 and transmitted to the output wheel 622. The output wheel 622 has: gear 623 which meshes with the gear of the final stage of gear train 621; a shaft portion 624 extending from the center of the gear 623 in the X2 direction; and a gear 625 (see fig. 2) connected to a tip end of a shaft 624 protruding in the X2 direction through a shaft support 641 provided in the end plate 64. Gear 625 meshes with sector gear 692 of output member 69.

The motor 61 includes: a terminal block 67 disposed in the cutout 631 of the motor case 63; and a terminal cover 68 covering the terminal block 67. The terminal block 67 is disposed radially outward of the insulator 652 around which the stator coil 651 is wound, and is integrally formed with the insulator 652. A plurality of connector terminals 70 are held by the terminal block 67. The plurality of connector terminals 70 are bent in the X1 direction on the radially outer side of the terminal block 67, and extend in the X1 direction in the gap between the terminal block 67 and the terminal cover 68. A stator coil 651 is electrically connected to the connector terminal 70.

(Shell)

The housing 3 has: a bottom 31 facing the separator 23 from the opposite side (X1 direction) of the frame 21; and a square tubular portion 32 protruding from the bottom portion 31 toward the separator 23 (X2 direction). The bottom portion 31 and the cylindrical portion 32 are quadrangular in that a long side extends in the Y direction and a short side extends in the Z direction when viewed from the X direction. As shown in fig. 3 and 6, the cylinder 32 includes: a first side plate 321 and a second side plate 322 opposing in the Z direction; and third and fourth side plates 323 and 324 opposed in the Y direction. The third side plate 323 connects the Y2 side ends of the first side plate 321 and the second side plate 322. The fourth side plate 324 connects the Y1 side ends of the first side plate 321 and the second side plate 322. Projections 30 which engage with the hooks 24 of the partition 23 are formed on the first side plate 321 and the second side plate 322.

The housing 3 is provided with a connector insertion port 33 through which the connector terminal 70 of the motor 61 is exposed to the side opposite to the partition plate 23. As shown in fig. 3 and 4, the connector insertion port 33 has a structure in which a corner portion connecting the fourth side plate 324 and the bottom 31 is cut away. When the mating connector is inserted into the connector insertion port 33, the connector terminal 70 of the motor 61 can be connected to an external wiring connected to the mating connector, and a drive signal can be supplied to the motor 61.

As shown in fig. 3 and 6, the case 3 includes a cylindrical boss portion 34 extending in the Z direction along the inner surfaces of the first side plate 321 and the second side plate 322. The boss 34 protrudes from the bottom 31 in the X2 direction and is connected to the first side plate 321 and the second side plate 322. When the separator 23 and the case 3 are coupled, the boss portion 34 is fitted with the protrusion 28 (see fig. 4) protruding from the separator 23 in the X1 direction.

The housing 3 includes a cylindrical shaft support portion 35 and a motor holding portion 36 disposed inside the tube portion 32. The shaft support portion 35 and the motor holding portion 36 protrude from the bottom portion 31 toward the side (X2 direction) where the partition plate 23 is located. The shaft support portion 35 and the motor holding portion 36 are disposed at the center of the housing 3 in the Z direction. The shaft support 35 is disposed at an end of the housing 3 on the third side plate 323 side (Y2 side). The motor holding portion 36 is disposed at an end of the housing 3 on the fourth side plate 324 side.

As shown in fig. 6 (a) and 6 (b), the motor holding unit 36 includes: a circular arc portion 361 surrounding the outer periphery of the motor case 63; and a pair of straight portions 362 surrounding both sides of the terminal cover 68 in the circumferential direction. The pair of straight portions 362 extend from the notch of the circular arc portion 361 in the Y1 direction, and are connected to both sides of the fourth side plate 324 in the circumferential direction of the connector insertion port 33. The circular arc portion 361 is connected to the inner surface of the first side plate 321 and the inner surface of the second side plate 322.

When the gear motor 60 is assembled to the housing 3, as shown in fig. 6 (a), a motor housing 63 is disposed inside the substantially cylindrical motor holding portion 36. A rib 363 (see fig. 8) extending in the Z direction is formed on the inner surface of the circular arc portion 361 of the motor holding portion 36. The outer peripheral surface of the motor case 63 contacts the tip of the rib 363, and is gently pushed into the motor holding portion 36.

As shown in fig. 4, the separator 23 is provided with a pressing portion 29 protruding in the X1 direction from a position facing the end plate 64 of the geared motor 60. When the separator 23 is coupled to the housing 3, the pressing portion 29 comes into contact with the end plate 64 of the gear motor 60 from the X2 side.

(reinforcing Structure of Shell)

On the inner side of the housing 3, a substantially cylindrical rib shape is provided as the motor holding portion 36 as described above. As shown in fig. 3 and 6, the motor holding portion 36 is disposed at an end of the housing 3 on the fourth side plate 324 side, and is separated from the third side plate 323. Accordingly, a first rib 37 extending in the Z direction, a second rib 38 extending in the Y direction, and a third rib 39 are arranged between the motor holding portion 36 and the third side plate 323, and a rib-based reinforcing structure is provided. The first rib 37, the second rib 38, and the third rib 39 protrude from the bottom 31 of the housing 3 in the X2 direction. The distal ends of the first rib 37, the second rib 38, and the third rib 39 are located closer to the X1 side than the distal ends of the shaft support portion 35 (see fig. 7).

The first rib 37 is disposed between the motor holding portion 36 and the shaft supporting portion 35, and is connected to the first side plate 321 and the second side plate 322. The second rib 38 is disposed at two positions on the Z1 side and the Z2 side of the shaft support portion 35, and intersects the first rib 37. The two second ribs 38 are connected to the motor holding portion 36 and the third side plate 323, respectively. The third rib 39 extends in the Y direction between the motor holding portion 36 and the shaft supporting portion 35, and connects the motor holding portion 36 and the shaft supporting portion 35. The shaft support portion 35 is connected to the third side plate 323 via a fourth rib 40 extending to the opposite side of the third rib 39.

As shown in fig. 7 and 8, the bottom 31 of the housing 3 includes: a bottom plate 311 that blocks an end of the motor holding portion 36 in the X1 direction; and a partition plate 312 located on the partition plate 23 side (X2 side) with respect to the bottom plate 311. In the present embodiment, the partition plate 312 is located at substantially the center of the housing 3 in the X direction. The bottom plate 311 and the partition plate 312 are plate-shaped with the X direction as the normal direction. The partition plate 312 connects the outer surface of the motor holding portion 36 and the inner surface of the tube portion 32 (the first side plate 321, the second side plate 322, the third side plate 323, and the fourth side plate 324). Therefore, the space accommodating the driving mechanism 6 is partitioned from the external space by the partition plate 312 on the outer peripheral side of the motor holding portion 36. The first rib 37, the second rib 38, the third rib 39, and the fourth rib 40 are connected to the partition 312, and protrude from the partition 312 in the X2 direction.

The bottom 31 of the housing 3 is reinforced by a first outer surface rib 313 and a second outer surface rib 314 protruding from the partition plate 312 in the X1 direction. As shown in fig. 4, the first outer surface rib 313 extends in the Z direction between the motor holding portion 36 and the third side plate 323, and is connected with the first side plate 321 and the second side plate 322. The second outer surface rib 314 extends in the Y direction and intersects the first outer surface rib 313. The second outer surface ribs 314 are arranged at equal intervals in 3 numbers, and connect the motor holding portion 36 and the third side plate 323. The front end surfaces of the first outer surface rib 313 and the second outer surface rib 314 in the X1 direction, the front end surface of the tube 32 in the X1 direction, and the bottom plate 311 are located on the same surface.

(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, a refrigerator main body 110 includes a plurality of storage chambers 111 and a cool air duct 112 for supplying cool air to the plurality of storage chambers 111, and a cool air inlet 113 for communicating the cool air duct 112 with the storage chambers 111 is provided with a damper device 1 to which the present invention is applied. The refrigerator main body 110 includes a cooler 114 that generates cool air, a fan 115 disposed in the cool 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, and adjusts the timing and amount of supply of cool air to the storage chamber 111.

(main effects of the present embodiment)

As described above, the damper device 1 of the present embodiment includes: a frame 2 including a frame portion 21 surrounding the opening portion 20 and a partition plate 23 disposed at an end portion of the frame portion 21; a shutter 4 rotatably supported by the frame 2 for opening and closing the opening 20; a driving mechanism 6 including a motor 61 and an output member 69 for transmitting rotation of the motor 61 to the shutter 4; and a case 3 coupled to the partition 23 and accommodating the driving mechanism 6 between the case and the partition 23. The housing 3 includes: a bottom 31 opposed to the separator 23 in the X direction (first direction); a first side plate 321 and a second side plate 322 that are opposite in the Z direction (second direction); a third side plate 323 and a fourth side plate 324 that connect the first side plate 321 and the second side plate 322, opposite in the Y direction (third direction); a motor holding portion 36 protruding in the X2 direction (first direction) from the bottom portion 31 between the first side plate 321 and the second side plate 322, surrounding the outer periphery of the motor 61; and a shaft support portion 35 that protrudes in the X2 direction (first direction) from the bottom portion 31 between the motor holding portion 36 and the third side plate 323, and supports the output member 69 so as to be rotatable. The housing 3 further includes: a first rib 37 extending in the Z direction (second direction) between the motor holding portion 36 and the shaft supporting portion 35 and connected to the first side plate 321 and the second side plate 322; and second ribs 38 extending in the Y direction (third direction) on both sides of the Z direction of the shaft support portion 35 and intersecting the first ribs 37, and connected to the third side plate 323 and the motor holding portion 36.

In the present embodiment, when the driving mechanism 6 is housed inside the housing 3 coupled to the partition 23 of the frame 2, the motor 61 is held by the motor holding portion 36 having a substantially cylindrical rib shape surrounding the outer periphery of the motor 61. In addition, between the shaft support portion 35 supporting the output member 69 and the motor holding portion 36, a first rib 37 extending in the Z direction (second direction) and a second rib 38 extending in the Y direction (third direction) intersect, the opposing first side plate 321 and second side plate 322 are connected by the first rib 37, and the motor holding portion 36 and third side plate 323 are connected by the second rib 38. Therefore, the space in the housing 3 is subdivided, and the rigidity of the housing 3 is improved, so that the housing 3 is less likely to vibrate, and the vibration of the motor 61 is less likely to be transmitted to the housing 3. Therefore, noise caused by vibration of the housing 3 can be suppressed.

In the case 3 of the present embodiment, in addition to the first rib 37 and the second rib 38 described above, a third rib 39 extending in the Y direction (third direction) is formed between the shaft support portion 35 and the motor holding portion 36, and therefore the motor holding portion 36 is connected to the shaft support portion 35. Further, a fourth rib 40 is provided to connect the shaft support portion 35 and the third side plate 323, and the motor holding portion 36 and the third side plate 323 are connected by the shaft support portion 35. Therefore, the rigidity of the portion of the housing 3 supporting the motor 61 and the output member 69 is improved, and therefore, the housing 3 is less likely to vibrate. Therefore, noise caused by vibration of the housing 3 can be suppressed.

In the case 3 of the present embodiment, the motor holding portion 36 is connected to the first side plate 321 and the second side plate 322, and the motor holding portion 36 is connected to the fourth side plate 324. Therefore, the rigidity of the portion near the motor 61 is high, and the vibration of the motor 61 is not easily transmitted to the housing 3, so that noise caused by the vibration of the housing 3 can be suppressed.

The bottom 31 of the case 3 of the present embodiment includes: a bottom plate 311 that blocks an end of the motor holding portion 36 on the X1 side (the side opposite to the separator 23); and a partition plate 312 connected to the motor holding portion 36, the first side plate 321, the second side plate 322, the third side plate 323, and the fourth side plate 324, and located on the X2 side (partition plate 23 side) with respect to the bottom plate 311, the first rib 37 and the second rib 38 protruding from the partition plate 312 in the X2 direction (first direction). Therefore, the portion of the motor holding portion 36 that is offset from the bottom plate 311 in the X2 direction (first direction) is supported via the partition plate 312, and therefore the rigidity of the motor holding portion 36 is high and vibration is not easy. Accordingly, the vibration of the motor 61 is not easily transmitted to the housing 3, and therefore, noise caused by the vibration of the housing 3 can be suppressed.

In the present embodiment, the bottom 31 includes a first outer surface rib 313 and a second outer surface rib 314 protruding from the partition plate 312 in the X1 direction. The first outer surface rib 313 extends in the Z direction and is connected to the first side plate 321 and the second side plate 322, and the second outer surface rib 314 extends in the Y direction and crosses the second outer surface rib 314 and is connected to the third side plate 323 and the motor holding portion 36. In this way, by adopting a structure in which the bottom 31 is divided by the ribs, it is possible to achieve weight reduction of the housing 3 while ensuring rigidity of the bottom 31.

The damper device 1 of the present embodiment can be used for a refrigerator 100, and the refrigerator 100 includes a cooler 114 and a storage chamber 111 to which cool air generated by the cooler 114 is supplied, and the damper device 1 is disposed at a cool air suction port 113 of the storage chamber 111.

(other embodiments)

The above-described embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited thereto, and various modifications can be made without departing from the spirit of the present invention. For example, in the bottom 31 of the housing 3, the position of the partition plate 312 in the X direction may be changed as appropriate. The damper device 1 in the above embodiment is used for a refrigerator, but is not necessarily limited to the damper device used for a refrigerator.

Symbol description

1 … damper device; 2 … frame; 3 … shell; 4 … baffle; 6 … drive mechanism; 20 … opening portions; 21 … frame portion; 22 … body portion; 23 … separator; 24 … hook; 25 … side panels; 26 … seal plate portion; 27, … shaft holes; 28 … convex portions; 29 … pressing part; 30 … projections; 31 … bottom; 32 … barrel portion; 33 … connector insertion opening; 34 … boss portion; 35 … shaft support; 36 … motor holder; 37 … first rib; 38 … second rib; 39 … third rib; 40 … fourth rib; 41. 42 … cylinder portion; 44 … shaft portion; 45 … opening and closing plate; 46 … elastic member; 60 … gear drive motor; 61 … motor; 62 … gear drive; 63 … motor housing; 64 … end plates; 65 … stator; 66 … partition member; 67 … terminal block; 68 … terminal cover; 69 … output member; 70 … connector terminals; 100 … refrigerator; 110 … refrigerator body; 111 … storage compartments; 112 … cold air duct; 113 … cool air suction inlet; 114 … cooler; 115 … fan; 120 … control means; 311 … bottom plate; 312 … separator plate; 313 … first outer surface ribs; 314 … second outer surface ribs; 321 … first side panel; 322 … second side panel; 323 … third side plate; 324 … fourth side panel; 361 and … arc portions; 362 … straight line portion; 363 … ribs; 621 … train; 622 … output wheel; 623 … gears; 624 … shaft portion; 625 … gears; 641 … shaft supporting sections; 651 … stator coils; 652 … insulator; 691 … shaft portion; 692 … sector gears; l … rotation central axis.

Claims

1. A damper device, comprising:

a frame including a frame portion surrounding an opening portion and a partition plate disposed at an end portion of the frame portion;

a shutter rotatably supported on the frame and opening and closing the opening;

a driving mechanism including a motor and an output member for transmitting rotation of the motor to the shutter; and

a housing coupled to the partition plate, the housing accommodating the driving mechanism between the housing and the partition plate,

the housing is provided with:

a bottom portion opposed to the partition plate;

a first side plate and a second side plate that face each other in a second direction intersecting the first direction, with a direction from the partition plate toward the bottom being a first direction side;

a third side plate and a fourth side plate that connect the first side plate and the second side plate and are opposite in a third direction intersecting the first direction and intersecting the second direction;

a motor holding portion that protrudes from the bottom portion to the other side in the first direction between the first side plate and the second side plate, and surrounds an outer periphery of the motor;

a shaft support portion that protrudes from the bottom portion to the other side in the first direction between the motor holding portion and the third side plate, and that rotatably supports the output member;

a first rib extending in the second direction between the motor holding portion and the shaft supporting portion and connected to the first side plate and the second side plate; and

and a second rib extending in the third direction on both sides of the second direction of the shaft support portion and intersecting the first rib, and connected to the third side plate and the motor holding portion.

2. The damper device of claim 1, wherein,

and a third rib extending in the third direction between the shaft support portion and the motor holding portion and connected to the motor holding portion and the shaft support portion.

3. The damper device of claim 2, wherein,

the shaft support portion is connected with the third side plate.

4. The damper device according to any one of claims 1 to 3, wherein,

the motor holding portion is connected to the first side plate and the second side plate.

5. The damper device according to any one of claims 1 to 4, wherein,

the motor holding portion is connected to the fourth side plate.

6. The damper device according to any one of claims 1 to 5, wherein,

the bottom part is provided with:

a bottom plate that blocks an end of the motor holding portion on the opposite side of the partition plate; and

a partition plate connected to the motor holding portion, the first side plate, the second side plate, the third side plate, and the fourth side plate and located on the partition plate side with respect to the bottom plate,

the first rib and the second rib protrude from the partition plate to the other side in the first direction.

7. The damper device of claim 6, wherein,

the bottom portion has a first outer surface rib and a second outer surface rib protruding from the partition plate to one side in the first direction,

the first outer surface rib extends in the second direction and is connected to the first side plate and the second side plate,

the second outer surface rib extends in the third direction and crosses the first outer surface rib, and is connected with the third side plate and the motor holding portion.

8. A refrigerator having a damper device according to any one of claims 1 to 7,

has a cooler and a storage chamber provided with cool air generated by the cooler,

the damper device is disposed at the cool air suction port of the storage chamber.