JPH09159343A - Motor-driven damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit miniaturization, prevent the flow of fluid, such as cold air, from being bothered and, further, close a baffle surely. SOLUTION: This motor-driven damper device operates a baffle 4 so as to be opened and closed with respect to an opening unit 3 employing an electric motor as a driving source and is provided with a closing force providing member 15, providing the baffle 4 with a force in the direction of closing. The opening unit 3 is formed in a tubular frame body 2, whose both ends are opened, while the baffle 4 is provided in the frame body 2 so as to be pivoted and moved in the frame body 2 between a position, whereat the baffle 4 is not abutted against the opening unit 3, and another position, whereat the baffle 4 is abutted against the opening unit 3. The baffle 4 is connected to the driving source so as to have a predetermined playing gap (g) while the baffle 4 retains an inclination freely with respect to the abutting surface of the opening unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper device that uses a motor as a drive source and operates a baffle with respect to an opening, and more particularly to a damper device suitable for controlling intake of cold air in a refrigerator.

[0002]

2. Description of the Related Art A conventional damper device, particularly a motor type damper device 50 for a refrigerator, has a baffle 52 and a drive mechanism portion 53 such as a motor sandwiching a rotary fulcrum shaft 51, as shown in FIGS. Is arranged (see Japanese Patent Laid-Open No. 6-109354). A leaf spring (not shown) that constantly presses the baffle 52 in the closing direction is arranged behind the baffle 52.

A motor type damper device 5 having such a structure
0 is used in the refrigerator 60 as shown in FIG. That is, the refrigerator 60 is divided into a freezing compartment 61, a refrigerating compartment 62, and a vegetable compartment 63, and an evaporator 64 is provided at the bottom of the freezing compartment 61. Evaporator 6
A fan motor 65 is arranged at the rear of the No. 4 to circulate the obtained cool air to the freezer compartment 61 and the refrigerating compartment 62.

A partition slope 66 is provided between the evaporator 64 and the refrigerating compartment 62 to block the cool air of the evaporator 64 from directly flowing into the refrigerating compartment 62. On the other hand, a cold airflow passage 67 is formed between the rear part of the partition slope 66 and the rear inner wall of the refrigerator 60, and the damper device 50 is arranged in the cold airflow passage 67. When the baffle 52 of the damper device 50 is open, the cold airflow passage 67, which is a passage for the cool air, is configured to have a crank shape. Further, the damper device 50 is installed so as to be held by the partition wall 68 forming a part of the cold airflow passage 67.

In recent years, with the use of refrigerators as mid-freezers, refrigerators of the type in which the cool air obtained at the central evaporator is turned to a refrigerating room at an upper position and at a remote position have also appeared.

[0006]

The conventional motor type damper device 50 shown in FIGS. 15 and 16 is of a type orthogonal to the cold air flow passage 67 and can be used only for bending the flow of cold air at a right angle.

Further, in the refrigerator 60 using such a damper device 50, since the cold airflow passage 67 has a crank shape, the cold airflow passage 67 becomes long and a loss occurs in terms of cold air transmission. This loss is extremely disadvantageous to a refrigerator that has been made into a mid-freezer because of its long cold air passage. Moreover, since the cold airflow passage 67 has a crank shape, as shown in FIG.
The protrusion width M to the inside of the refrigerator 60 becomes large, which is one of the causes for reducing the volume of the refrigerator 60.

Further, the opening operation of the baffle 52 does not open to a position parallel to the flow of cold air, but FIG.
Since the baffle 52 becomes a resistance against the flow of the cool air, it is not preferable for the quick diffusion of the cool air, as shown in FIG.

Further, such a motor type damper device 5
In the damper device used in a refrigerator or the like including 0, it is required to completely shut off cool air when the baffle 52 is in the closed position.

The present invention has been made in consideration of the above problems, can be downsized, and can surely close the baffle without obstructing the flow of fluid such as cold air. An object of the present invention is to provide a motor-type damper device that can perform the above.

[0011]

In order to achieve such a problem, according to the first aspect of the invention, a motor is used as a drive source to open and close the baffle with respect to the opening, and a force in the closing direction is applied to the baffle. In a motor type damper device having a closing force imparting member for imparting an opening, an opening is formed inside a tubular frame whose both ends are open, and a position and an opening not contacting the opening inside the frame. A baffle that pivotally moves between a position where the baffle abuts is provided, the baffle is rotationally connected to a drive source by providing a predetermined play, and the baffle is held so as to be tiltable with respect to a contact surface of the opening.

In addition, in the invention described in claim 2, in the motor type damper device described in claim 1, the frame has a substantially square pole shape and a size that can be fitted into a duct in the refrigerator. Further, in the invention according to claim 3, claim 1
In the described motor type damper device, the frame body is a duct in the refrigerator.

In the invention according to claim 4, the invention according to claim 2
Alternatively, in the motor type damper device described in the paragraph 3, the supporting portion for rotatably supporting the baffle is a supporting portion for movably supporting the baffle in a contact surface direction of the opening when the baffle is in a position in contact with the opening. It is said that. Furthermore, in the invention of claim 5, in the motor type damper device of claim 2 or 3, the baffle is rotatably held by a member for rotating the baffle.

In this motor type damper device, the rotational force of the motor is transmitted to the baffle via the fan gear and the like, and the baffle operates with respect to the opening. An opening is formed inside the tubular frame, and the baffle moves between a position in contact with the opening and a position in which it does not contact the opening. Therefore, the fluid flowing along the frame,
For example, the cold air in the refrigerator flows along the frame. Further, since the baffle is rotationally connected to the drive source by providing a predetermined play and is held so as to be tiltable with respect to the contact surface of the opening, there is some play in the mechanical allowance. Then, by utilizing this mechanical allowance, the closing force applying member such as a spring firmly presses the baffle against the contact surface.

It should be noted that the damper device can be installed in the rectangular pillar-shaped duct in the refrigerator by making the frame body into a substantially rectangular pillar-shaped shape and the size thereof to be fitted into the duct in the refrigerator. And is preferable for refrigerators. Further, when the frame body is a duct in the refrigerator, the cool air of the refrigerator can be controlled only by attaching a motor or a baffle.

In addition, if the structure of the support part of the baffle that can be tilted to the contact surface is a structure that supports the baffle so that it can move in the contact surface direction when the baffle is in contact with the opening, The baffle can be tilted around the part. Also, when the member for rotating the baffle is rotatably held by the member, the baffle rotates about the member,
Abut the opening.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a motor type damper device of the present invention will be described with reference to FIGS. In addition,
This motor type damper device is used in a refrigerator.

In this motor type damper device, a stepping motor 1 serving as a drive source, a cylindrical frame body 2 having both ends open, and an opening 3 formed obliquely with respect to the frame body 2.
And a baffle 4 that opens and closes the opening 3.

The stepping motor 1 has an output shaft 5 made of SUS, and a pinion 6 made of polyacetal (hereinafter referred to as POM) is fitted to the output shaft 5. The shaft end 6a of the pinion 6 on the side opposite to the stepping motor 1 is supported in a bearing shape by a concave portion 2b of the side 2a of the frame 2. The pinion 6 meshes with the fan-shaped gear 7 made of POM, reduces the rotation of the stepping motor 1 and transmits it to the fan-shaped gear 7. A magnet 8 made of an isotropic ferrite magnet is fixed to one end of the fan gear 7, while a Hall IC 9 for detecting the approach of the magnet 8 is attached to the frame body 2 on the printed circuit board 10.
Is fixed through. A shaft 13 made of SUS is fitted in the through hole 7b of the rotation center portion 7a of the fan gear 7 to transmit the rotation of the fan gear 7 to the shaft portions 4a and 4b of the baffle 4. A cover 11 made of ABS resin is fitted to the frame body 2 so as to cover these moving mechanisms for moving the baffle 4, and is attached to the frame body 2 by screws 12 and 12. The shaft portions 4a, 4 of the baffle 4 are
The b and the shaft 13 form a support portion of the baffle 4.

The frame body 2 is made of ABS resin, and in this embodiment, has a quadrangular prism shape, and is provided with an attachment hook portion 2c at one end. And
An opening 3 is formed inside the frame body 2, and the baffle 4 and the baffle shaft portions 4 a and 4 b are housed in the frame body 2.

On the other hand, the opening 3 is formed by surrounding an opening 3b with an opening forming portion 3a which projects obliquely from the frame body 2. The opening 3 of the opening forming portion 3a
The portion facing b is a contact portion 3c protruding toward the baffle 4 and forms a contact surface. Further, the opening forming portion 3a on the shaft 13 side is provided with the shaft portions 4a, 4 of the shaft 13 and the baffle 4.
Since it largely protrudes obliquely so as to cover b, if this motor-type damper device is attached in the state of FIG. 1, frost and thawed water will collect in the root portion 3d of the opening forming portion 3a. In order to prevent this problem, a drainage hole 2d is formed on the side surface of the frame body 2, and the root portion 3d is formed as an inclined surface which descends as it approaches the drainage hole 2d as shown in FIG. Although the opening 3 is formed integrally with the frame body 2, it may be a separate member.

The baffle 4 is made of polycarbonate, and a soft tape 14 made of foamed polyethylene is fixed to the opening 3 side of the baffle 4. Further, the baffle 4 is rotatable about shaft portions 4a and 4b through which the shaft 13 penetrates, and moves between an open position indicated by a chain line in FIG. 1 and a closed position indicated by a solid line. A spring locking portion 4h is provided at a substantially central position of the baffle 4, and one end of a coil spring 15 serving as a closing force applying member is hooked. The other end of the coil spring 15 is hooked on a groove 2 e formed in the frame 2. Further, a bearing 16 with a locking portion is fitted on the shaft 13 to support the shaft 13. In addition, one end of the shaft 13 penetrates the shaft portion 4 b of the baffle 4, is supported by the frame body 2, and the other end is supported by the cover 11.

As shown in FIG. 4, the shaft portion 4a of the baffle 4 is provided with a shaft insertion cutout hole 4c, a through hole 4d, and a groove 4f into which the central pin 17 of the shaft 13 is inserted. There is. Further, the shaft portion 4b is provided with a through hole 4e and a groove 4g into which the pin 18 on one end side of the shaft 13 is inserted.

As shown in FIG. 5, the shaft 13 has a through hole 13a for holding the center pin 17 therethrough, a through hole 13b for holding the pin 18 at one end side, and a pin at the other end side. A through hole 13c for penetrating and holding 19 and a flat small diameter portion 13d for inserting into the shaft insertion cutout hole 4c of the baffle 4 are provided.

The baffle 4 and the shaft 13 configured as described above
The engagement with is performed by pins 17, 18 and 19. This engagement is carried out by first holding the baffle 4 on the frame pair 2 at a position substantially corresponding to the installation position thereof, and inserting the shaft formed in one of the shaft portions 4a, 4b of the baffle 4 shown in FIG. The flat small-diameter portion 13d of the shaft 13 in which the pins 17, 18, and 19 are previously inserted and fixed in the cutout hole 4c is shown in FIG.
Insert in the direction of arrow b in (A). In addition to the pins 17, 18, and 19, the fan gear 7 and the bearing 16 with a locking portion are fixed to the shaft 13 in advance.

Thereafter, the shaft 13 is further inserted, and the shaft portion 4
It is incorporated in the through hole 4d of a. Then, install the shaft 13 in FIG.
6A and 6A, the shaft 13 is moved to the left and one end of the shaft 13 is inserted into the through hole 4e of the shaft portion 4b. In this way,
The baffle 4 and the shaft 13 are integrally assembled to the frame body 2. At this time, the end of the shaft 13 is held by the frame body 2, and the bearing 16 with the locking portion is also held by the frame body 2. The bearing 16 with the engaging portion has an elastic engaging portion 16a, and the tip thereof is a hook portion 16b. Therefore, after fitting into the bearing through hole provided in the frame body 2, the hook portion 16
It does not come off due to the action of b.

The pins 17, 18 and 19 are provided on the shaft portion 4a.
The groove 4f, the groove 4g of the shaft portion 4b, and the groove 7c formed in the rotation center portion 7a of the fan gear 7 are located at a total of three places. The pins 17 and 18 and the shaft portions 4a and 4b of the baffle 4 are engaged with each other with a slight clearance g for play. In addition, the shaft 13 and the shaft portion 4 of the baffle 4
Engagement with a and 4b is performed with a slight play gap h so that the baffle 4 can be tilted with respect to the opening 3. That is, the direction perpendicular to the surface of the opening 3, which is the same as the direction in which the pin 16 is inserted, has a slight gap h in the vertical direction, and a slight gap h exists between the shaft 13 and the shaft portions 4a, 4 of the baffle 4.
b.

The motor type damper device thus constructed is incorporated in a refrigerator in the form as shown in FIG. 7, for example. Here, the same members as those shown in FIG. 17 are designated by the same reference numerals, and the description thereof is omitted.

The refrigerator 20 is a mid-freezer refrigerator, and has a freezer compartment 61 in the center, a refrigerating compartment 62 in the upper part, and a vegetable compartment 63 in the lower part. And the duct 21 which blows cold air to the refrigerating room 62.
Is formed, and the motor type damper device is fitted in a portion of the duct 21 communicating with the refrigerating chamber 62. That is, the frame 2 of this motor type damper device is fitted so as to form a part of the duct 21, and the damper device itself also serves as the duct 21. The motor type damper device may be attached not to the refrigerating compartment 62 but to the vegetable compartment 63, or to both compartments as shown in FIG.

Next, the operation of this motor type damper device will be described.

A CPU or the like for controlling the temperature in the refrigerator 20 issues a command to the motor type damper device to introduce cold air. Then, the stepping motor 1 is driven, and its rotation is performed by the pinion 6, the sector gear 7, the shaft 13, the shaft portion 4a,
The signal is transmitted to the baffle 4 via the line 4b. As a result, the baffle 4 separates from the opening 3 against the elastic force of the coil spring 15 and moves to the open position (see the alternate long and short dash line in FIG. 1) which is a position parallel to the frame body 2.

When the baffle 4 is in the open position, the fan gear 7
The magnet 8 adhered to is rotated to a portion close to the Hall IC 9. Therefore, the Hall IC 9 generates a signal for stopping the stepping motor 1, and the stepping motor 1 stops driving. At this time, the elastic force of the coil spring 15 acts on the baffle 4 to move it to the closed position, but the open position state is held by the energization holding force of the stepping motor 1 or the reluctance torque. The signal generated by the Hall IC 9 serves as an origin signal, and defines the origin of the movement of the baffle 4.

A room to which cold air is sent, for example, a cold room 62
When the baffle 4 cools down and a signal instructing to close the baffle 4 is generated, the stepping motor 1 is rotated in the direction opposite to that in the previous driving in the opening direction, and the baffle 4 starts to be driven in the closing direction. Then, the movement position from the origin is detected by the pulse number, and when the predetermined pulse number is reached,
It is determined that the baffle 4 is at the closed position, and the driving of the stepping motor 1 is stopped. The driving of the stepping motor 1 is stopped by moving the pins 17 and 18 within the play gap g even after the soft tape 14 fixed to the baffle 4 contacts the contact portion 3c of the opening 3. And then stop. For this reason, the force of the coil spring 15 acts on the baffle 4, and the soft tape 14 having elastic force is pressed, and the contact portion 3c bites the soft tape 14 firmly without any gap. At the time of this contact, the contact portion 3c of the opening 3
If there is a variation in the amount of protrusion or the shape of the baffle 4, there is a possibility that the contact will not be completed even if there is a gap g, but with this motor type damper, the contact surface can be tilted freely. Since there is such a gap h, even if there is such a variation, it is possible to abut in a perfect shape.

Here, the moving time from the open position of the baffle 4 (the position indicated by the chain line in FIG. 1) to the closed position (the position indicated by the solid line in FIG. 1) is controlled by the pulse generation rate. In this example, 10
0 pps for 25.8 seconds, 200 pps for 12.9 seconds, 3
It is set to 8.6 seconds at 00 pps. Or, if you want to stop the baffle 4 in the middle of opening and closing instead of the completely open position, move the baffle 4 to the open position once to return to the home position, and then the pulse from the home position This is done by stopping the stepping motor 1 in a smaller number of stages than in the case. It should be noted that the moving angle α from the open position (the one-dot chain line position in FIG. 1) to the closed position (the solid line position in FIG. 1)
Is 45 degrees in this embodiment, but other angles can be appropriately adopted.

In the embodiment shown in FIGS. 1 to 7, since the opening 3 is formed obliquely with respect to the frame body 2, the moving angle of the baffle 4 becomes small and one end of the coil spring 15 is connected to the frame body 2. In addition, the other end can be engaged with the baffle 4 to operate. Therefore, the coil spring 15 is attached to the frame 2
The baffle 4 can be housed inside, can be made compact, and its force can be sufficiently exerted, so that the baffle 4 can be surely opened without a gap. In addition, since the open position of the baffle 4 is set to be substantially parallel to the frame body 2, cold air flowing along the frame body 2 in the open state is blocked by the baffle 4 and the opening 3. Almost nothing is done, and it flows straight. Therefore, there is no loss of cold air transmission,
A refrigerator with good efficiency of cold air transmission and diffusion.

The above-described embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. is there. For example, as the frame body 2, the duct in the refrigerator may be used as it is to form the frame body. Also,
The moving mechanism may be placed inside the duct wall of the refrigerator. That is, the cover 11 may be used together with the duct wall of the refrigerator. Further, the baffle 4 may be driven in the opening direction by a motor, and the closing direction may be driven by a spring force such as a coil spring. Further, as the motor, in addition to the stepping motor 1, other motors such as an AC synchronous motor and a DC motor can be used. Further, instead of the sector gear 7, a normal gear may be used. Further, the opening 3 may not be inclined with respect to the frame 2 but may be in a direction perpendicular to the frame 2. In addition, the opening position of the baffle 4 may be not obliquely parallel to the frame 2 but may be oblique.

The structure around the baffle 4 is as follows.
The structure shown in FIGS. 8 and 9 may be used. FIG.
2 is a view corresponding to FIG. 2, and FIG. 9 is a partial cross-sectional view as seen from the direction of the arrow IX in FIG. 8, and the same parts as those represented by the reference numerals shown in FIGS. 1 and 2 are the same. It is indicated by a symbol. In this example, a baffle shaft 31 that is rotatable so as to be parallel to the long side of the baffle 4 is provided, and both ends of the baffle shaft 31 are supported by the arms 32 and 32. Here, the arm portions 32, 32 are fixed to the shaft 13, and the shaft 1
While rotating integrally with 3, the baffle 4 is rotatable around the baffle shaft 31 as a fulcrum.

Further, the peripheral structure of the baffle 4 may be the structure shown in FIG. In this example, the baffle shaft 31 shown in FIG. 8 is passed through the baffle shaft insertion portion 33 protruding to the back surface of the baffle 4, and the baffle shaft 31 is supported by the arms 32 and 32.

Further, instead of the coil spring 15, a magnet 34 as shown in FIGS. 11 and 12 is attached to the entire circumference of the baffle 4 or at several places, while a magnetic material such as iron is made to the entire circumference or some places of the opening forming portion 3a. The material 35 may be attached. In this case, the magnet 34 may be replaced by a magnetic material, the other magnetic material 35 may be a magnet, or both may be magnets. As described above, when the baffle 4 is brought into contact with the opening 3 by using the magnet, a large driving force by the stepping motor 1 or the like is required only when the baffle 4 is separated from the opening 3, and In the position, the baffle 4 is not loaded. For this reason, a holding force such as a dayant torque is almost unnecessary. As a result, the drive source such as the motor can be downsized. If a magnet is used as the magnet 34, it is preferable when it is attached to the entire circumference of the baffle.

When a magnet is used, as shown in FIG.
Also, a structure as shown in FIG. 14 may be used. That is, the magnet 36 is attached to the center of the baffle 4 by the spring 37 so as to be slightly movable in the vertical direction with respect to the opening 3. On the other hand, a bridging portion 3e extending from the opening forming portion 3a is formed in the center of the opening 3, and a magnetic material 38 such as iron is arranged in the center thereof. Also in this example, the same combination of magnet and magnetic material as in FIGS. 11 and 12 may be used. In the case of this example, in addition to the effect that the drive source such as the motor can be downsized as in FIGS. 11 and 12, various errors can be absorbed by the spring 37, so that the manufacturing work and the assembling work become easy.

In each of the above-described embodiments, the case where the motor type damper device of the present invention is used for controlling the cool air in the refrigerator has been described, but the present invention is also applicable to other devices that handle fluids such as air conditioners and water supply devices. The invention can be applied.

[0042]

As described above, in the motor type damper device according to the first aspect of the present invention, since the baffle is provided inside the tubular frame, the damper device is fitted to the tubular duct or the like. Since it can be installed, space loss can be reduced. Moreover, cold air or the like flowing along the frame can be flowed along the frame as it is. Also, the fluid flowing along the frame, for example, cold air in the refrigerator,
It flows straight along the frame. For this reason, there is no transmission loss of cold air and the like, and the fluid flows smoothly, and when used in a refrigerator, the refrigerator has high efficiency of cold air transmission and cold air diffusion. In addition, since the closing force applying member can firmly close the baffle by utilizing a mechanical allowance, fluid such as cold air can be completely shut off.

According to the second aspect of the present invention, the frame is formed in a quadrangular prism shape and has a size to be fitted into a duct in the refrigerator, which is preferable as a damper device for a refrigerator. Further, in the invention according to claim 3, since the frame body is a duct in the refrigerator, the attachment to the refrigerator is extremely easy.

Furthermore, according to the second and third aspects of the present invention, since the frame has a size that fits in the duct of the refrigerator, or the duct itself, it is necessary to make the duct part have a special shape on the refrigerator side. Since the dead space for the damper device as in the conventional case does not occur as well as it disappears, the damper device is extremely suitable as a damper device for a refrigerator.

Further, in the present invention as set forth in claim 4, since the baffle can be tilted around the support portion, even if an error such as an assembly error occurs on the contact surface distant from the support portion, the error is easily caused by the baffle side. It can be absorbed. In addition, claim 5
In the above-described invention, the baffle rotates around the member that holds the baffle so that the baffle is rotatable, so that the opening and closing of the opening can be easily performed by the rotation.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a motor type damper device of the present invention, (A) is a sectional view thereof, and (B) is an enlarged view of a shaft portion thereof.

FIG. 2 is a partially cutaway front view in which the front frame portion and the opening forming portion are omitted, as viewed from the direction of arrow II in FIG. 1;

FIG. 3 is a view as viewed from the direction of arrow III in FIG. 2, with a cover removed and a stepping motor virtually added.

FIG. 4 is a view showing a baffle used in the embodiment shown in FIGS. 1 to 3, (A) is a rear view, (B) is a front view seen from an arrow B of (A), (C) is a side view seen from the arrow C of (A).

5 is a diagram showing a shaft used in the embodiment shown in FIGS. 1 to 3, (A) is a front view, and (B) is a plan view.

FIG. 6 is a view for explaining a method of assembling the baffle and the shaft used in the embodiment shown in FIGS. 1 to 3, (A) is a plan view, and (B) is an arrow of (A). It is the figure seen from the B direction.

FIG. 7 is a sectional view showing an example of a refrigerator to which the motor type damper device of the present invention is applied.

FIG. 8 is a side view showing a frame and an opening in section for explaining a modified example of the baffle of the motor type damper device of the present invention.

9 is a view from the direction of the arrow IX in FIG.

FIG. 10 is a side view with a frame and an opening in section for explaining a second modified example of the baffle of the motor type damper device of the present invention.

FIG. 11 is a side view of a cross section of a frame and an opening for explaining a modification of the closing force imparting member of the motor type damper device of the present invention.

FIG. 12 is a view as seen from the direction of the arrow XII in FIG. 11, and is a partially cutaway front view in which a front frame portion and an opening forming portion are omitted.

FIG. 13 is a side view with a frame and an opening in section for explaining a second modification of the closing force imparting member of the motor type damper device of the present invention.

FIG. 14 is a view as seen from the direction of the arrow XIV in FIG. 13, and is a front view of a main part with the front frame and the opening forming part omitted.

FIG. 15 is a front view of a conventional damper device.

16 is a partially cutaway side view of FIG.

FIG. 17 is a cross-sectional view showing an example of a refrigerator to which a conventional damper device is applied.

[Explanation of symbols]

 1 Stepping Motor (Motor) 2 Frame 3 Opening 3c Abutment 4 Baffles 4a, 4b Shaft (Support) 6 Pinion 7 Fan Gear 13 Shaft (Support) 14 Soft Tape 15 Coil Spring (Closing Force Applying Member) 21 Duct g Gap for play h Gap for play

Claims (5)

[Claims] 1. A motor type damper device having a motor as a drive source, which opens and closes a baffle with respect to an opening and has a closing force applying member which applies a force in a closing direction to the baffle, both ends of which are opened. Inside the tubular frame, while forming the opening, inside the frame,
The baffle that pivotally moves between a position that does not abut the opening and a position that abuts the opening is provided. The baffle is rotationally connected to the drive source with a predetermined play, and the opening is provided. A motor type damper device characterized in that it is held so as to be tiltable with respect to the contact surface of the section. 2. The motor type damper device according to claim 1, wherein the frame body has a substantially quadrangular prism shape and is sized to fit into a duct in a refrigerator. 3. The motor type damper device according to claim 1, wherein the frame body is a duct in a refrigerator. 4. A support portion for rotatably supporting the baffle, the support portion for movably supporting the baffle in a contact surface direction of the opening when the baffle is in a position in contact with the opening. The motor-type damper device according to claim 2 or 3, characterized in that. 5. The motor type damper device according to claim 2, wherein the baffle is rotatably held by a member that rotates the baffle.