WO2017208920A1

WO2017208920A1 - Damper device

Info

Publication number: WO2017208920A1
Application number: PCT/JP2017/019318
Authority: WO
Inventors: 隆司原田; 堀尾　好正; 正久　昌利
Original assignee: パナソニック株式会社
Priority date: 2016-05-30
Filing date: 2017-05-24
Publication date: 2017-12-07
Also published as: CN109312974A; JP6764258B2; TW201741608A; JP2017215066A; TWI725179B

Abstract

Provided is a damper device configured so that it is unlikely that space for the pivoting of blade plates will be affected by the area of opening of the damper device, and the blade plates can operate even in small space. This damper device is provided with: a drive source (40); a plurality of blade plates (20); a frame body (10) for supporting the blade plates so that the blade plates can pivot; and a power transmission mechanism (50) for converting the drive power of the drive source into the pivotal movement of the blade plates. The frame body has a pair of openings (11, 12) which serve as a fluid inlet and a fluid outlet. The damper device is characterized in that, when a hollow section in the frame body, the hollow section being in communication with the pair of openings, is defined as a flow passage (10a) in the frame body, the plurality of blade plates are arranged within the flow passage along the first opening (11), which is one of the openings, so as to be parallel to each other.

Description

Damper device

The present invention relates to a damper device.

The following Patent Document 1 discloses a refrigerator provided with a damper device that controls a flow path of cool air circulating in the warehouse.

JP 2009-002545 A

The damper device of Patent Document 1 includes a single baffle, and rotates this to connect or block the cool air flow path. Therefore, in the damper device of Patent Document 1, the rotation space of the baffle increases in proportion to the opening area, and securing the rotation space of the baffle becomes a problem when providing a large opening area.

In view of the above problems, the problem to be solved by the present invention is to provide a damper device in which the rotation space of the slats is not easily influenced by the opening area of the damper device and can operate even in a narrow space.

In order to solve the above problems, a damper device according to the present invention includes a drive source, a plurality of blades, a frame that rotatably supports the blades, and a driving force of the drive source. And a power transmission mechanism for rotating each of the slats, and the frame body has a pair of openings that are a fluid inlet and outlet and the pair of openings in the frame body When the hollow part communicating with the part is used as the flow path part of the frame body, the plurality of blades are disposed along the first opening which is one of the openings in the flow path part. , And arranged in parallel.

By dividing the wing plate that opens and closes the fluid flow path into a plurality of pieces, even when the opening area of the damper device is increased, it is possible to suppress an increase in the rotation space of the wing plate. As a result, the damper device of the present invention can easily secure the space for rotating the slats and can be installed in a narrower space.

The dimension of each slat in the direction parallel to the rotational center line is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. And when the dimension of the flow path direction of the fluid in the flow path section is the height of the flow path section, the height of the flow path section may be higher than the width of each blade.

Since the damper device frame has a height that covers the plurality of slats, the slats can be more safely protected during shipment, storage, and installation of the damper device.

The dimension of each slat in the direction parallel to the rotational center line is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. And the height of the flow path portion is the same as the width of each slat or when the dimension of the fluid flow direction in the flow path part is the height of the flow path part, It is good also as a structure lower than a width | variety.

By dividing the wing plate that opens and closes the fluid flow path into a plurality of pieces, even when the opening area of the damper device is increased, it is possible to suppress an increase in the rotation space of the wing plate. With this configuration, the damper device of the present invention can be made thinner.

Further, it is preferable that the power transmission mechanism has a link mechanism disposed in the flow path portion, and a swing range of the link mechanism is within the flow path portion.

The link mechanism, which is a driving member for a plurality of slats, is configured so that the swinging operation is performed in the flow path portion of the frame body, and the mechanism is not protruded outside the frame body. The degree of freedom is increased.

Further, the power transmission mechanism has a link mechanism disposed in the flow path portion, and the power transmission mechanism is further connected to the link mechanism to transmit the driving force of the drive source to the link mechanism. A link driving member that is a member to be supported, and the frame includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member; Preferably, the plurality of slat support portions and the link driving member support portions are integrally formed with the frame body.

Since the blade support part and the link driving member support part are integrally formed with the frame body, the relative positional relationship between the blades and the link mechanism can be kept constant. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors can be suppressed, and the smooth operation of the slats can be ensured.

In addition, when the length of each slat in the direction parallel to the rotation center line is the length of the slat, a shaft projecting in the length direction is provided at both ends in the length direction of each slat. A first shaft portion is formed, and the frame body includes a plurality of blade support portions that are support portions of the blades, and each of the blade support portions includes a plurality of blade support portions. It is a bearing which supports the 1st axis part so that rotation is possible, and among the pair of slat support parts of each slat board, at least any one of the slat support parts is in a part of the peripheral direction. The first shaft portion is formed with an insertion port which is a cutout portion inserted in the radial direction with respect to the blade support portion, and the periphery of each blade support portion formed with the insertion port. The opening angle of the insertion port in the direction is not parallel to the direction perpendicular to the length direction of each slat in the first opening, and It is preferable that the angle is not a corner.

By forming the insertion port of the slat support portion obliquely with respect to the direction perpendicular to the length direction of each slat among the opening diameter direction of the first opening, the midway position of the slat rotation operation The outlet will be directed in the direction. Generally, when such a damper device is transported, the damper devices are arranged and packed in a direction in which the slats are closed or in a direction in which the slats are fully opened. By orienting the notch direction of the insertion port in a direction that is a midway position of the rotating operation of the slats, it is possible to prevent the slats from dropping from the slat support portions when the damper device is transported.

The pair of openings includes the first opening and a second opening that is the other opening, and the inner wall surface of the frame that defines the flow path portion includes the first opening. It is preferable that a taper is provided so that the diameter of the flow path is increased from one opening toward the second opening.

By providing the inner wall surface of the flow path with a taper, for example, water droplets formed on the flow path due to dew condensation are guided by the taper and flow out of the frame from the second opening. It is possible to suppress the problem that the fluid is deposited and the flow path of the fluid is blocked or the operation of the slats is hindered.

The power transmission mechanism includes a link mechanism disposed in the flow path, and the power transmission mechanism is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism. The link mechanism is connected to the link drive member when the length of the blade plate is the dimension of each blade plate in the direction parallel to the rotation center line. It is preferable to have a first link member to be connected, and a second link member for connecting the first link member and one end in the length direction of each slat.

Since the link mechanism has the first link member and the second link member, the first link member serves as a drive link, the second link member serves as an intermediate link, the frame body serves as a fixed link, and each wing plate serves as a driven link 4 A knot link mechanism can be configured. Thereby, it becomes possible to synchronize the rotation operation of each slat with a simple structure.

The power transmission mechanism includes a link mechanism disposed in the flow path, and the power transmission mechanism is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism. A link driving member that is a member; the link driving member includes a gear portion and an output shaft portion; and the driving force of the driving source is one or a plurality of gears included in the power transmission mechanism. Member is transmitted to the link drive member, and the gear portion of the link drive member and the gear member are accommodated in a gear box which is a case body, and the gear portion of the link drive member or the gear member, and the gear box Preferably, when the link driving member is at a predetermined angular position, it has a stopper portion that abuts against each other and blocks transmission of the driving force.

When the wing plate reaches its rotation limit angle, by blocking the transmission of the driving force with the power transmission member before the link mechanism, it is prevented that excessive stress is applied to the wing plate and the link mechanism, It is possible to suppress a decrease in the component life of the slats and the link mechanism.

Further, the power transmission mechanism has a link mechanism disposed in the flow path portion, and the power transmission mechanism is further connected to the link mechanism to transmit the driving force of the drive source to the link mechanism. A link driving member that is a member to be operated, and the length of each slat in the direction parallel to the rotation center line is the length of the slat. A first shaft portion that is a shaft portion protruding in the length direction is formed, and the frame body includes a plurality of blade support portions that are support portions of the blades and the link driving member. A link drive member support part, the link drive member support part is a bearing that rotatably supports the link drive member, and the plurality of blade support parts are respectively Is a bearing that rotatably supports the first shaft portion, and the link driving portion. Shaft hole direction of the support portion, and the shaft hole direction of each vane plate supporting portion preferably extends in a direction which is a straight line or in parallel.

The axial hole direction of these link drive member support parts and each slat support part is the same direction, so that the driving force can be efficiently transmitted, and the load applied to each member such as the twist of the slats is applied. Can be suppressed.

Further, the frame body has a plurality of slat support parts that are support parts of the slats, and protrudes in the length direction at both ends in the length direction of the slats. A first shaft portion, which is a shaft portion supported by the plate support portion, is formed. One end of each of the blades in the length direction protrudes in the length direction and is connected to the second link member. A second shaft portion that is a shaft portion is formed, and when the width in the direction perpendicular to the length direction on the front surface or the back surface of each blade plate is the width of the blade plate, It is preferable that the 2nd axial part is arrange | positioned at the both ends in the width direction of each said blade.

Since these shaft portions are provided at both ends in the width direction of each slat, the slat can be rotated with a minimum driving force and the operation accuracy of the slat can be improved.

The drive source is preferably a stepping motor.

The stepping motor can rotate in both forward and reverse directions, and the rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control using a rotary encoder or the like in order to detect the arrangement angle of the slats from time to time. Thereby, the number of parts in the whole apparatus can be reduced and the apparatus can be downsized.

The dimension of each slat in the direction parallel to the rotational center line is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. And, in the width direction of each slat, when the end of the slat on the rotation center line side is the base end of the slat, and the opposite end is the tip of the slat, The plurality of slats open and close the first opening by its rotational movement, and each slat is closed to the proximal end of the adjacent slat when the first opening is closed. It is good also as a structure which a front-end | tip part overlaps.

The sealing degree of the first opening can be increased by adopting a configuration in which the distal end portion of each slat overlaps with the proximal end portion of the adjacent slat when the slats are closed.

The dimension of each slat in the direction parallel to the rotational center line is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. And, in the width direction of each slat, when the end of the slat on the rotation center line side is the base end of the slat, and the opposite end is the tip of the slat, The tip of each slat may be made of an elastic member.

Since the tip of each slat is made of an elastic member, the degree of sealing of the first opening can be increased when each slat is closed.

The damper device according to the present invention can be operated even in a small space because the rotational space of the slats is not easily influenced by the opening area of the damper device.

It is a top view showing a schematic structure and operation of a damper device concerning an embodiment. It is an external appearance perspective view which shows the shape of a slat. It is the top view and side view sectional drawing which show the shape of a flame | frame. It is a disassembled perspective view of the damper device concerning an embodiment. It is a permeation | transmission top view which shows the reduction gear structure of a gear member. It is a side view which shows the structure of a stopper part. It is a side view which shows rocking | fluctuation operation | movement of a link mechanism. It is sectional drawing seen from the side explaining the opening angle of the insertion port of a slat board support part. It is a schematic diagram which shows the modification of a slat. It is a schematic diagram which shows the modification of a slat. It is sectional drawing seen from the side which shows the modification of a flame | frame.

Hereinafter, embodiments of a damper device according to the present invention will be described with reference to the drawings. The damper device D according to this embodiment is disposed inside a refrigerator (not shown) and controls the circulation of cold air in the refrigerator. The damper device D of the present embodiment is used, for example, in the middle of a refrigerator duct or between a duct and a storage chamber. The application target of the damper device of the present invention is not limited to a refrigerator, and can be applied to a wide range of equipment and facilities for the purpose of opening and closing a fluid flow path and adjusting the flow rate.

<Overview of overall configuration>
FIG. 1 is a plan view showing a schematic configuration and operation of a damper device D according to the present embodiment. FIG. 1A shows the damper device D with the slat 20 closed, and FIG. 1B shows the damper device D with the slat 20 open.

The damper device D includes three slats 20 and a frame 10 that is a frame that rotatably supports these slats 20. The frame 10 is formed with a first opening 11 and a second opening 12 which are a pair of openings that allow the inside of the frame 10 and the duct to communicate with each other. Cold air flows into the frame 10 of the present embodiment from the second opening 12 and out of the first opening 11. The slats 20 in this embodiment are arranged in parallel so as to follow the first opening 11 of the frame 10. These slats 20 are rotated by the driving force of the motor 40 provided in the damper device D to open and close the first opening 11. At the end of the frame 10 on the first opening 11 side, a flange portion 10f is formed extending from the entire circumference toward a position that is the center of the first opening 11. The first opening portion 11 is adjusted to have an opening area enough to cover the entire surface with the wing plate 20 by the flange portion 10f. No flange portion is provided on the second opening portion 12 side, so that the opening area of the second opening portion 12 is formed wider than the first opening portion 11 by the extension width of the flange portion 10f. Yes.

In the damper device D, a plate-like member that opens and closes the first opening 11 (a member corresponding to a baffle in Patent Document 1) is divided into a plurality of blades 20. For this reason, even when the opening area of the damper apparatus D becomes large, the rotation space of each blade 20 can be kept constant by increasing the number of blades 20. Thereby, the damper device D facilitates securing the rotation space of the slats 20 and can appropriately operate the slats 20 even in a narrow space.

<Configuration of slats>
FIG. 2 is an external perspective view showing the shape of the slat 20. The wing plate 20 is an elongated plate-like member. In the following description, the dimension of the slat 20 in the direction parallel to the rotation center line a is referred to as the length l of the slat 20, and the direction orthogonal to the length l direction on the front surface 20 a or the back surface 20 b of the slat 20. Is called the width w of the slat 20. In the following description, the end of the slat 20 on the side of the rotation center line a in the width w direction is referred to as a base end b of the slat 20 and the opposite end is referred to as a tip t of the slat 20. .

A first shaft portion 21 that is a shaft portion protruding in the length l direction is formed at both ends of the blade 20 in the length l direction. The first shaft portion 21 is rotatably supported by the frame 10, whereby the position of the rotation center line a of the slat 20 is determined. A second shaft portion 22 protruding in the length l direction is formed at one end of the wing plate 20 in the length l direction. The second shaft portion 22 receives the driving force of the motor 40 and reciprocates on an arc centered on the rotation center line a to determine the rotation angle of the slat 20. The first shaft portion 21 and the second shaft portion 22 are arranged at positions almost at both ends in the width w direction of the slat 20. Thereby, the slat 20 can be rotated with a minimum driving force, and the operation accuracy of the slat 20 is improved.

Both end faces in the width w direction of the slats 20 are constituted by curved surfaces with rounded corners on the front surface 20a side and the back surface 20b side. As a result, when the slats 20 are opened and closed, the adjacent slats 20 are prevented from coming into contact with the corners, and the gaps between the slats 20 when the first opening 11 is closed can be reduced. It is said that.

The second shaft portion 22 is provided with a reinforcing portion 22r integrally formed with the wing plate 20 and the second shaft portion 22. The reinforcing part 22r supplements the strength of the second shaft part 22 by supporting the side surface of the second shaft part 22 on the first shaft part 21 side. Further, the second shaft portion 22 is disposed slightly on the center side from the tip t of the slat 20. And the space S ₁ from the second shank 22 to the tip t, space S ₂ from the reinforcing portion 22r to the first shaft portion 21, when each blade plate 20 closes the first opening 11 will be described later wings This is a configuration for allowing the plate support 15 to escape into the space and preventing the blade 20 and the blade support 15 from contacting each other.

In the present embodiment, three slats 20 are used, but the upper limit is not particularly limited on the condition that the number of slats of the damper device of the present invention is two or more. For example, by reducing the width w of the slats 20 and disposing more slats 20 on the same area of the flow path, the rotational space of each slat 20 can be further reduced. Of course, as the number of parts increases, the failure rate and assembly man-hours also increase. On the other hand, if the number of the slats 20 is reduced, such a problem can be reduced, but the rotation space of the slats 20 is increased by the amount of the decrease in the number of slats 20. The number of slats of the damper device according to the present invention may be determined in accordance with the environmental conditions in which the damper device is used, taking into account the balance between the advantages and disadvantages associated with the increase / decrease. In the present embodiment, it is preferable that the number of slats 20 is an odd number because of the structure of a link mechanism 50l described later.

<Frame structure>
(overall structure)
FIG. 3 is a plan view and a side sectional view showing the shape of the frame 10. 3A is a plan view of the frame 10, and FIG. 3B is a cross-sectional view taken along the line AA in FIG. 3A.

The frame 10 is a substantially rectangular hollow frame that rotatably supports the three slats 20. The frame 10 has a second opening 12 and a first opening 11 through which cool air passes. Hereinafter, the hollow portion of the frame body 10 that communicates the second opening portion 12 and the first opening portion 11 is referred to as a flow path portion 10 a of the frame body 10. As described above, the frame 10 has the flange portion 10 f formed over the entire circumference of the first opening portion 11. Thereby, the rigidity of the frame 10 with respect to the external force is enhanced, and the deformation of the frame 10 due to the external force is suppressed. Further, the right end of the frame 10 as viewed in FIG. 3A is a space in which a gear box 10g which is a case-like portion in which a gear member 50g described later is accommodated and a link mechanism 50l described later is accommodated. The link mechanism arrangement portion 101 is integrally formed.

In the frame 10 of the present embodiment, the height h of the flow channel portion 10a is the width of each slat 20 when the dimension of the flow channel direction in the flow channel portion 10a is the height h of the flow channel portion 10a. The height is approximately the same as w. Thereby, thickness reduction of the whole damper apparatus D is achieved. The height h of the flow path portion 10a does not always have to be the same as the width w of the slat 20 and may be further lowered according to the environmental conditions in which the damper device D is used. It may be higher than the width w. For example, by making the height h of the flow path portion 10a higher than the width w of each vane plate 20, it is possible to prevent inadvertent application of force to the vane plate 20 when the damper device D is assembled or transported. .

(Configuration of slat support)
A plurality of slat support portions 15 that support the slats 20 are formed in the frame 10. Each of the slat support portions 15 is a bearing that rotatably supports the first shaft portion 21 of the slat 20. A pair of slat support portions 15 are provided at positions corresponding to both ends of the slat 20 in the length l direction. Of the pair of slat support portions 15 of each slat 20, the slat support portion 15 on the right side in FIG. 3A is formed on the flange portion 10 f, and a first shaft is formed on a part of the circumferential direction. An insertion port 15 a is formed as a cutout portion in which the portion 21 is inserted in the radial direction with respect to the wing plate support portion 15. The blade support part 15 on the left side in FIG. 3A is formed on the inner wall surface of the frame 10, and the shaft hole of the blade support part 15 is a recess that does not penetrate the side wall of the frame 10. Thereby, the grease applied to the slat support 15 is retained in the shaft hole, and the grease is prevented from easily flowing out to the outside.

Further, in the pair of slat support portions 15 arranged on the uppermost side in FIG. 3 (a), when the slat 20 to be supported is in a closed state, the tip t of the slat 20 is at the flange portion 10f. It has been adjusted to the overlapping position (see FIG. 1A). Furthermore, in the group of slat support portions 15 arranged at the lowermost side in FIG. 3A, when the slat 20 that supports the slat 20 is in a fully opened state, at least a part of the slat 20 is the first. The position is adjusted to be hidden behind the flange portion 10f when viewed from the opening 11 side (see FIG. 1B). In the damper device D of the present embodiment, the opening area of the first opening 11 is maximized by arranging the slat support 15 in this way.

FIG. 8 is a side cross-sectional view of the frame 10 shown in FIG. 3B when the slat 20 is disposed in a fully opened state. As shown in FIG. 8, the opening angle of the insertion port 15 a in the circumferential direction of each slat plate support portion 15 in which the insertion port 15 a is formed is, among the opening diameter directions of the first opening portion 11, An angle that is not parallel and not perpendicular to the short-side direction 11a that is a direction orthogonal to the length l direction of the slat 20 is inclined with respect to the short-side direction 11a of the first opening 11. It is set to an angle. The “opening diameter direction” of the first opening 11 is a plane direction that defines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. Further, the short side direction 11a and “parallel” mean a direction parallel to the Y axis direction in the coordinate axis display of FIG. 8, and the short side direction 11a and “right angle” mean a direction parallel to the Z axis direction in the coordinate axis display. Say.

By forming the insertion port 15 a of the slat support 15 at an angle with respect to the short side direction 11 a of the first opening 11, the insertion port 15 a is a direction in which the wing plate 15 is in the middle of the rotation operation. Will be opened. Generally, when a damper device such as the present invention is transported, the damper device is packed in a direction in which the slats are in a closed state or in a direction in which the slats are fully opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is oriented in the direction in which the blade plate 20 is in the middle of the rotation operation. It is prevented from falling off the plate support 15.

<Power transmission mechanism>
(overall structure)
FIG. 4 is an exploded perspective view of the damper device D of the present embodiment. The damper device D opens or closes the first opening 11 by rotating the slats 20 with the driving force of the motor 40 to connect or block the cool air flow path. The driving force of the motor 40 is transmitted to the wing plate 20 by the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l.

(motor)
A stepping motor is used as the motor 40 of this embodiment. The stepping motor can rotate in both forward and reverse directions, and the rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control using a rotary encoder or the like in order to detect the arrangement angle of the slats 20 from time to time. Thereby, reduction of the number of parts in the whole damper apparatus D and size reduction of an apparatus are achieved.

(Gear member)
FIG. 5 is a transparent plan view showing the speed reduction structure of the gear member 50g as viewed from the direction B of FIG. Hereinafter, the gear member 50g will be described with reference to FIGS.

The driving force of the motor 40 is decelerated through the gear member 50g from the motor pinion 41 fixed to the output shaft and transmitted to the link mechanism 50l. The gear member 50g is composed of five gear members, that is, a first gear 51 to a fourth gear 54 and a fifth gear 55 that is a link driving member that swings the link mechanism 50l.

The frame 10 and the motor 40 are connected by a middle case 30 which is a case body disposed between them. The first gear 51 is disposed in a space defined by the motor 40 and the middle case 30, and is rotatably supported by a support shaft 42 provided in the space. The second gear 52 to the fourth gear 54 are arranged in a space defined by the gear box 10g, which is a case-like portion of the frame 10, and the middle case 30, and can rotate on a support shaft 32 provided in the same space. It is supported by. The fifth gear 55 is rotatably supported by a concave portion 33 formed in the middle case 30 and a link driving member support portion 16 that is a bearing portion penetrating from the gear box 10g to the flow path portion 10a.

The first gear 51 to the fourth gear 54 are a reduction gear train that reduces the rotation of the motor pinion 41 and transmits it to the fifth gear 55. The fifth gear 55 is a member in which a gear portion 55g formed with a fan-shaped gear meshing with the fourth gear 54 and a shaft portion 55s that is an output shaft portion that transmits the driving force to the link mechanism 50l are integrated. It is. A portion of the outer peripheral surface of the shaft portion 55s of the fifth gear 55 is cut out in a flat shape. A pair of such notches are provided at positions that are symmetrical in the circumferential direction of the shaft portion 55s.

The first gear 51 to the fourth gear 54 constituting the gear member 50g are compound gears in which a large-diameter spur gear and a small-diameter spur gear are connected in the axial direction and integrated. The motor pinion 41 of the motor 40 meshes with the large diameter gear 51w of the first gear 51, and the rotation of the large diameter gear 51w is decelerated and transmitted to the small diameter gear 51n. The middle case 30 is formed with a covered cylindrical cover portion 31 protruding toward the frame 10, and a small-diameter gear 51n of the first gear 51 is accommodated in the cylinder. The cover portion 31 is partially cut away in the circumferential direction, and a portion of the small-diameter gear 51n is exposed therefrom. The exposed portion of the small diameter gear 51n meshes with the large diameter gear 52w of the second gear 52. Thereafter, the small diameter of the fourth gear 54 is sequentially changed from the small diameter gear 52n of the second gear 52 to the large diameter gear 53w of the third gear 53, from the small diameter gear 53n of the third gear 53 to the large diameter gear 54w of the fourth gear 54. The driving force of the motor 40 is decelerated and transmitted from the gear 54n to the gear portion 55g of the fifth gear 55.

FIG. 6 is a side view of the fifth gear 55 inserted into the link driving member support 16 as seen from the direction C of FIG. For convenience of explanation, members other than the frame 10 and the fifth gear 55 are not shown. The gear portion 55g of the fifth gear 55 and the gear box 10g of the frame 10 are brought into contact with each other when the blade 20 is at a predetermined rotation angle, that is, when the fifth gear 55 is at a predetermined angular position. The

stopper portions

10c and 55c are provided that block the transmission of the driving force to the link mechanism 50l by being in contact with each other. The power transmission mechanism 50 of the present embodiment is configured such that when the slat 20 reaches its rotation limit angle, the transmission of the driving force is interrupted by the power transmission member before the link mechanism 50l. Excessive stress is prevented from being applied to the wing plate 20 and the link mechanism 50l, and the reduction in the component life of the wing plate 20 and the link mechanism 50l is suppressed. In the present embodiment, the stopper portion 55 c is provided on the fifth gear 55, but the stopper portion on the gear member side of the present invention may be provided on a gear member other than the fifth gear 55. In this embodiment, the gear box 10g is integrally formed with the frame 10 as a part of the frame 10, but the gear box 10g may be a separate body from the frame 10.

(Link mechanism)
FIG. 7 is a view of the swinging operation of the link mechanism 50l as viewed from the direction C in FIG. FIG. 7A is a transmission side view when the blade 20 is in a fully open state, and FIG. 7B is a transmission side view when the blade 20 is in a closed state. Hereinafter, the link mechanism 50l will be described with reference to FIGS.

The link mechanism 50l includes a first link member 56 and a second link member 57. The first link member 56 receives the driving force of the fifth gear 55 and swings the second link member 57, whereby the second link member 57 moves the second shaft portion 22 of the three blades 20, The vanes 20 are reciprocated on an arc centered on the rotation center line a of the vanes 20 to rotate the vanes 20.

The first link member 56 is a member in which two substantially cylindrical bearings are connected to each other in the radial direction. The first link member 56 has a fitting hole 56b into which the shaft portion 55s of the fifth gear 55 is fitted, and a shaft hole 56a that rotatably supports the connecting shaft 57a of the second link member 57. Yes. The shape of the fitting hole 56 b of the first link member 56 corresponds to the shape of the shaft portion 55 s of the fifth gear 55. As a result, the portion of the shaft portion 55s cut out in the plane engages with the fitting hole 56b in the circumferential direction, and the fifth gear 55 and the first link member 56 rotate integrally.

The second link member 57 is a member mainly composed of an elongated plate-like body. Three connecting holes 57b that rotatably support the second shaft portion 22 of the three slats are formed on the surface of the second link member 57 on the slat 20 side, and on the opposite surface thereof The connecting shaft 57a supported by the shaft hole 56a of the first link member 56 protrudes toward the first link member 56 side.

In the link mechanism 50l, the wing plate 20, and the frame 10 of this embodiment, the first link member 56 is a drive link, the second link member 57 is an intermediate link, the frame 10 is a fixed link, and each wing plate 20 is a driven link. The four-bar linkage mechanism is configured. Thereby, it is possible to synchronize the rotation operation of each slat 20 with a simple structure.

Here, the shaft portion 55 s of the fifth gear 55 is supported on the link driving member support portion 16 of the frame 10. The link driving member support portion 16 and the wing plate support portion 15 described above are integrally formed on the frame 10 in the present embodiment. In the damper device D of the present embodiment, the relative position relationship between the blade 20 and the link mechanism 50l is constant because the blade support 15 and the link drive member support 16 are integrally formed with the frame 10. It is possible to keep on. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors is suppressed, and the smooth operation of the slats 20 is ensured.

Further, as can be seen from the fact that the second opening 12 side of the link mechanism 50l in FIG. 1 or FIG. It is within the range of 10a. That is, the link mechanism 50l of the present embodiment does not protrude from the end of the frame 10 in the entire process of the swinging operation. Thereby, the freedom degree of the installation place of the damper apparatus D is raised.

Furthermore, the axial hole direction of the link driving member support part 16 and the axial hole direction of each blade support part 15 extend in a straight line or parallel direction. The damper device D according to the present embodiment can efficiently transmit the driving force of the motor 40 by making the axial hole directions of the link driving member support portion 16 and the blade support portions 15 the same. In addition, the load applied to each member such as twisting of the slat 20 is suppressed.

<Modification>
Below, the modification of the damper apparatus D of previous embodiment is demonstrated. In the following description, configurations having the same or similar structures and functions as those of the previous embodiment are denoted by the same reference numerals as those of the previous embodiment, and detailed description thereof is omitted.

FIG. 9 and FIG. 10 are schematic views showing a modification of the slat 20. Each blade 20d in FIG. 9 and each blade 20e in FIG. 10 closed the first opening 11 and the base plate 25, which is the portion on the base end b side facing the first opening 11, respectively. Sometimes, it is constituted by an overlapping portion 26 that is a portion on the tip end t side that overlaps the substrate portion 25 of the

slats

20d, 20e adjacent to the right side in the drawing. As shown in FIG. 9, the gap provided between the overlapping part 26 of the slats 20d and the substrate part 25 of the adjacent slats 20d is when the cold air circulates by extending the flow path of the cold air. Thus, the sealing performance of the slat 20d is improved. Note that these overlapping portions 26 may be in contact with the substrate portions 25 of the adjacent slats 20d. In the overlapping portion 26 of the slat 20e shown in FIG. 10, an elastic member 27 is adhered to the surface of the adjacent slat 20e facing the substrate 25. Thereby, the clearance gap between the overlapping part 26 of the slat 20e and the board | substrate part 25 of the adjacent slat 20e is closed, and the sealing performance of the slat 20e is improved.

FIG. 11 is a side sectional view showing a modification of the frame 10. FIG. 11 is a view of the frame 10d viewed from the same direction as the frame 10 of FIG. The frame 10d according to this modification is provided with a taper on the inner wall surface 10i of the frame 10g that divides the flow path portion 10a so that the diameter of the flow path increases from the first opening 11 toward the second opening 12. Yes. By providing such a taper on the inner wall surface 10i, the frame 10d is guided by the inclination of the taper when the water droplets are formed on the flow path portion 10a by, for example, dew condensation. Since water droplets flow outside 10, the problem that ice accumulates in the flow path portion 10a and the flow path of the fluid is blocked or the operation of the slats 20 is hindered can be suppressed. Note that the frame 10d is arranged with the second opening 12 facing downward when arranged in the vertical flow path, and is arranged on the upstream side of the cold air when arranged in the horizontal flow path. It is assumed that the opening 12 is disposed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, all the blades 20 are rotated by the driving force of one motor 40, but a configuration in which each blade 20 is rotated using a plurality of motors 40 is conceivable.

Claims

A driving source;
Multiple slats,
A frame that rotatably supports each of the slats;
A power transmission mechanism for transmitting the driving force of the driving source to each of the blades and rotating the blades;
With
The frame body has a pair of openings that are an inlet and an outlet of a fluid,
When the hollow portion communicating with the pair of openings in the frame body is used as the flow path portion of the frame body,
The damper device, wherein the plurality of slats are arranged in parallel along the first opening which is one of the openings in the flow path.
The length in the direction parallel to the rotation center line of each slat is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. When the dimension of the flow path direction of the fluid in the flow path section is the height of the flow path section,
The damper device according to claim 1, wherein a height of the flow path portion is higher than a width of each of the blades.
The length in the direction parallel to the rotation center line of each slat is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. When the dimension of the flow path direction of the fluid in the flow path section is the height of the flow path section,
2. The damper device according to claim 1, wherein a height of the flow path portion is the same as a width of each of the blades or lower than a width of each of the blades.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The damper device according to claim 1, wherein a swing range of the link mechanism is within the flow path portion.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
The frame body includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member,
2. The damper device according to claim 1, wherein the plurality of blade support parts and the link driving member support part are integrally formed with the frame body.
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
A first shaft portion that is a shaft portion protruding in the length direction is formed at both ends in the length direction of each slat,
The frame body has a plurality of blade support portions that are support portions of the blades,
Each of the plurality of blade support portions is a bearing that rotatably supports the first shaft portion,
Of the pair of slat support portions of each slat, at least one of the slat support portions is partly in the circumferential direction, and the first shaft portion has a diameter relative to the slat support portion. An insertion port that is a notch that is inserted in the direction is formed,
The opening angle of the insertion port in the circumferential direction of each slat support formed with the insertion port is in a direction perpendicular to the length direction of each slat in the first opening. The damper device according to claim 1, wherein the damper device has an angle that is not parallel and not a right angle.
The pair of openings includes the first opening and the second opening which is the other opening.
A taper is provided on an inner wall surface of the frame body that defines the flow path portion so that the diameter of the flow path increases from the first opening toward the second opening. The damper device according to claim 1.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission mechanism includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
The link mechanism includes a first link member connected to the link driving member, and a second link member connecting the first link member and one end in the length direction of each slat. The damper device according to claim 1.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission mechanism includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
The link driving member has a gear portion and an output shaft portion,
The driving force of the driving source is transmitted to the link driving member by one or a plurality of gear members of the power transmission mechanism,
The gear portion of the link driving member and the gear member are accommodated in a gear box that is a case body,
The gear portion of the link driving member or the gear member, and the gear box have a stopper portion that abuts against each other and interrupts transmission of the driving force when the link driving member is at a predetermined angular position. The damper device according to claim 1.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
A first shaft portion that is a shaft portion protruding in the length direction is formed at both ends in the length direction of each slat,
The frame body includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member,
The link drive member support portion is a bearing that rotatably supports the link drive member,
Each of the plurality of blade support portions is a bearing that rotatably supports the first shaft portion,
2. The damper device according to claim 1, wherein an axial hole direction of the link driving member support part and an axial hole direction of each blade support part extend in a straight line or parallel direction.
The frame body has a plurality of blade support portions that are support portions of the blades,
At both ends in the length direction of each of the slats, a first shaft part that is a shaft part that protrudes in the length direction and is supported by the slat plate support part is formed,
At one end in the length direction of each of the slats, a second shaft portion that is a shaft portion protruding in the length direction and connected to the second link member is formed,
When the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat,
The damper device according to claim 8, wherein the first shaft portion and the second shaft portion are disposed at both ends in the width direction of the blades.
The damper device according to claim 1, wherein the driving source is a stepping motor.
The length in the direction parallel to the rotation center line of each slat is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. When the end of the slat in the width direction of each slat is the base end of the slat and the opposite end is the tip of the slat,
The plurality of slats open and close the first opening by its rotation operation,
2. The damper device according to claim 1, wherein when each of the slats closes the first opening, a tip end part of the slat overlaps with a base end part of the adjacent slats.
The length in the direction parallel to the rotation center line of each slat is the length of the slat, and the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat. When the end of the slat in the width direction of each slat is the base end of the slat and the opposite end is the tip of the slat,
The damper device according to claim 1, wherein a tip portion of each slat is made of an elastic member.