JP6764258B2 - Damper device - Google Patents

Description

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 cold air circulating in the refrigerator.

JP-A-2009-002545

The damper device of Patent Document 1 includes a single baffle, and by rotating the baffle, the flow path of cold air is communicated or blocked. Therefore, in the damper device of Patent Document 1, the rotation space of the baffle increases in proportion to the opening area, and when the opening area is increased, securing the rotation space of the baffle becomes a problem.

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

In order to solve the above problems, the damper device of the present invention uses a drive source, a plurality of wing plates, a frame body that rotatably supports each wing plate, and the driving force of the drive source. The frame body has a pair of openings that are an inlet and an outlet for fluid, and the pair of openings in the frame body includes a power transmission mechanism that transmits to and rotates each of these blade plates. When the hollow portion communicating with the portions is used as the flow path portion of the frame body, the plurality of wing plates are placed in the flow path portion along the first opening which is one of the openings. , The power transmission mechanism is connected to the plurality of wing plates, and the link mechanism for adjusting the flow rate of the fluid by rotating these wing plates and the link mechanism are connected to the link mechanism. It has a link drive member which is a shaft body that transmits the driving force of the drive source to the link mechanism, and the length of each blade plate and the frame body is parallel to the rotation center line of each blade plate. When the direction is taken, the link mechanism includes a first link member connected to the link drive member, and a second link member connecting the first link member and one end of each blade plate in the longitudinal direction. The frame body has a plurality of wing plate support portions that are support portions of the wing plates, and both ends of the wing plates in the length direction are projected in the length direction. The first shaft portion, which is a shaft portion supported by the wing plate support portion, is formed, and the one end portion, which is one end portion in the length direction of each wing plate, protrudes in the length direction. When the second shaft portion, which is a shaft portion connected to the second link member, is formed and the dimension in the direction orthogonal to the length direction on the front surface or the back surface of each blade plate is defined as the width of the blade plate, the above. The first shaft portion and the second shaft portion are arranged at both ends or in the vicinity thereof in the width direction of each of the feather plates, and the frame body has a link mechanism arrangement portion which is a space for accommodating the link mechanism. In the length direction of the frame body, the link mechanism arranging portion has the plurality of wings rather than the first shaft portion of the one side end portion of the plurality of wing plates and the wing plate supporting portion supporting the first shaft portion. It is provided at a position away from the plate, and each of the wing plates rotates in the same direction and at the same angle as the first link member due to the rotation of the link driving member .

By dividing the wing plate that opens and closes the fluid flow path into a plurality of sheets, it is possible to suppress the expansion of the rotation space of the wing plate even when the opening area of the damper device becomes large. As a result, the damper device of the present invention can easily secure a rotation space for the wing plate, and can be installed in a narrower space. Further, 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 blade plate serves as a driven link. A four-section link mechanism can be configured. This makes it possible to synchronize the rotational movements of each wing plate with a simple structure. Further, since these shaft portions are provided near both ends in the width direction of each wing plate, the wing plate can be rotated with the minimum driving force, and the operation accuracy of the wing plate can be improved. ..

Further, before the flow direction of the dimension of the fluid when the height of the flow path unit in Kiryuro portion, the height of the channel section, the may be higher construction than the width of each vane.

Since the frame of the damper device has a height that covers the plurality of blade plates, the blade plates can be more safely protected at the time of shipment, storage, and installation of the damper device.

Further, before the flow direction of the dimension of the fluid when the height of the flow path unit in Kiryuro portion, the height of the channel section, the same as the width of each vane, or the respective blades The configuration may be lower than the width of.

By dividing the wing plate that opens and closes the fluid flow path into a plurality of sheets, it is possible to suppress the expansion of the rotation space of the wing plate even when the opening area of the damper device becomes large. With this configuration, the damper device of the present invention can reduce the thickness of the frame.

Further, the link mechanism is disposed in the flow path portion, the swinging range of the link mechanism preferably fit into the channel portion.

The link mechanism, which is a driving member of a plurality of blades, performs its swinging operation in the flow path portion of the frame body, and the mechanism is not projected outside the frame body. The degree of freedom is increased.

Further, the link mechanism is disposed in the flow path portion, the frame has a link drive member support portion is a support portion of the front Symbol link drive member, said plurality of blades support part and the link The drive member support portion is preferably integrally molded with the frame body.

Since the wing plate support portion and the link drive member support portion are integrally molded with the frame body, the relative positional relationship between the wing plate and the link mechanism can be kept constant. As a result, it is possible to suppress the influence of the dimensional error and the assembly error on the position accuracy of these members and ensure the smooth operation of the wing plate.

Further, the prior SL plurality of blades support part, a bearing, each of which supports the first shaft portion rotatably, one of the pair of blade support part of each of the vanes, one of at least one The wing plate support portion has an insertion port formed in a part in the circumferential direction, which is a notch in which the first shaft portion is inserted in the radial direction with respect to the wing plate support portion. The opening angle of the insertion port in the circumferential direction of each wing plate support portion on which the mouth is formed is not parallel to the direction orthogonal to the length direction of each wing plate in the first opening. And it is preferable that the angle is not a right angle.

By forming the insertion port of the wing plate support portion diagonally with respect to the direction orthogonal to the length direction of each wing plate in the opening radial direction of the first opening, the intermediate position of the rotation operation of the wing plate The outlet will be directed in the direction of. Generally, when transporting such a damper device, the damper device is arranged and packed in a direction in which the wing plate is closed or in a direction in which the wing plate is fully opened. By directing the notch direction of the insertion port to the direction in which the rotation operation of the wing plate is in the middle position, it is possible to prevent the wing plate from falling off from the wing plate support portion during transportation of the damper device.

Further, the pair of openings is composed of the first opening and the second opening which is the other opening, and the inner wall surface of the frame for partitioning the flow path has the first opening. It is preferable that the taper is provided so that the diameter of the flow path increases from the first opening to the second opening.

By providing a taper on the inner wall surface of the flow path portion, for example, water droplets formed on the flow path portion due to dew condensation are guided by the taper and flow out of the frame through the second opening, so that ice is formed in the flow path portion. It is possible to suppress the trouble that the flow path of the fluid is blocked due to the accumulation of ice and the operation of the blade plate is hindered.

Further, the link mechanism is disposed in the flow path portion, the link driving member, the gear unit, and has an output shaft portion, the driving force of the driving source is one the power transmission mechanism has or It is transmitted to the link drive member by a plurality of gear members, and the gear portion of the link drive member and the gear member are housed in a gear box which is a case body, and the gear portion of the link drive member or the gear member, and It is preferable that the gear box has a stopper portion that abuts against each other and blocks the transmission of the driving force when the link driving member is at a predetermined angle position.

When the wing plate reaches its rotation limit angle, the power transmission member in front of the link mechanism blocks the transmission of the driving force, thereby preventing excessive stress from being applied to the wing plate and the link mechanism. It is possible to suppress a decrease in the life of parts of the wing plate and the link mechanism.

Further, the link mechanism is disposed in the flow path portion, the frame has a link drive member support portion is a support portion of the front Symbol link drive member, the link driving member supporting part, said link It is a bearing that rotatably supports the drive member, and each of the plurality of wing plate support portions is a bearing that rotatably supports the first shaft portion, and is in the shaft hole direction of the link drive member support portion. , And the shaft hole direction of each of the wing plate support portions is preferably extended in a direction in which they are in a straight line or parallel to each other.

Since the shaft hole directions of the link drive member support portion and each blade support portion are in the same direction, the driving force can be efficiently transmitted, and the load applied to each member such as the twist of the blade plate can be applied. It can be suppressed.

Further, the drive source is preferably a stepping motor.

The stepping motor can rotate in both forward and reverse directions, and its rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control by a rotary encoder or the like in order to detect the arrangement angle of the wing plate at each time. As a result, it is possible to reduce the number of parts in the entire device and reduce the size of the device.

Further, in the width direction before Symbol each vane, the end portion of the pivot axis side of the該羽plate proximal end of該羽plate, the end portion on the opposite side thereof when the distal end portion of the該羽plate The plurality of wing plates open and close the first opening by the rotation operation, and each wing plate is attached to the base end portion of the adjacent wing plate when the first opening is closed. The tip portions may overlap each other.

By configuring the tip of each wing plate to overlap with the base end of the adjacent wing plate when each wing plate is closed, the degree of sealing of the first opening can be increased.

Further, in the width direction before Symbol each vane, the end portion of the pivot axis side of the該羽plate proximal end of該羽plate, the end portion on the opposite side thereof when the distal end portion of the該羽plate The tip of each wing plate may be made of an elastic member.

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

In the damper device of the present invention, the rotation space of the blade plate is not easily affected by the opening area of the damper device, and the damper device can be operated even in a narrow space.

It is a top view which shows the schematic structure and operation of the damper device which concerns on embodiment. It is an external perspective view which shows the shape of a wing plate. It is a plan view and a side view sectional view which shows the shape of a frame. It is an exploded perspective view of the damper device which concerns on embodiment. It is a transmission plan view which shows the deceleration 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 the rocking operation of a link mechanism. It is a side view sectional view explaining the opening angle of the insertion port of the wing plate support part. It is a schematic diagram which shows the deformation example of a wing plate. It is a schematic diagram which shows the deformation example of a wing plate. It is a side view sectional view which shows the deformation example of a frame.

Hereinafter, embodiments of the damper device according to the present invention will be described with reference to the drawings. The damper device D according to the present embodiment is arranged 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, by being fitted in the middle of a duct of a refrigerator or between a duct and a storage chamber. The application target of the damper device of the present invention is not limited to the refrigerator, but can be applied to a wide range of devices and equipment for the purpose of opening and closing the flow path of the fluid and adjusting the flow rate.

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

The damper device D has three blade plates 20 and a frame 10 which is a frame body that rotatably supports the blade plates 20. The frame 10 is formed with a first opening 11 and a second opening 12, which are a pair of openings that communicate the inside of the frame 10 with the duct. Cold air flows into the frame 10 of the present embodiment through the second opening 12 and flows out from the first opening 11. The wing plates 20 in this embodiment are arranged side by side in parallel along the first opening 11 of the frame 10. These blade plates 20 are rotated by the driving force of the motor 40 included 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 extending from the entire circumference toward the center of the first opening 11 is formed. The first opening 11 is adjusted by the flange portion 10f to an opening area sufficient to cover the entire surface with the blade plate 20. No flange portion is provided on the second opening 12 side, whereby the opening area of the second opening 12 is formed wider than that of the first opening 11 by the extension width of the flange portion 10f. There is.

In the damper device D, a plate-shaped member (a member corresponding to a baffle in Patent Document 1) that opens and closes the first opening 11 is divided into a plurality of blade plates 20. Therefore, even when the opening area of the damper device D becomes large, the rotation space of each blade plate 20 can be kept constant by increasing the number of blade plates 20. As a result, the damper device D makes it easy to secure a rotation space for the blade plate 20, and makes it possible to appropriately operate the blade plate 20 even in a narrow space.

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

At both ends of the wing plate 20 in the length l direction, first shaft portions 21 which are shaft portions protruding in the length l direction are formed. The first shaft portion 21 is rotatably supported by the frame 10, whereby the position of the rotation center line a of the blade plate 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 a 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 blade plate 20. The first shaft portion 21 and the second shaft portion 22 are arranged at positions that are substantially both ends of the blade plate 20 in the width w direction. As a result, the blade plate 20 can be rotated with the minimum driving force, and the operation accuracy of the blade plate 20 is improved.

Both end faces of the wing plate 20 in the width w direction are formed by curved surfaces having rounded corners on the front surface 20a side and the back surface 20b side. This prevents the corners from coming into contact with the adjacent blades 20 when the blades 20 are opened and closed, and it is possible to reduce the gap between the blades 20 when the first opening 11 is closed. It is said that.

The second shaft portion 22 is provided with a wing plate 20 and a reinforcing portion 22r integrally molded with the second shaft portion 22. The reinforcing portion 22r supplements the strength of the second shaft portion 22 by supporting the side surface of the second shaft portion 22 on the first shaft portion 21 side. Further, the second shaft portion 22 is arranged slightly closer to the center than the tip t of the blade plate 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 portion 15 to escape into the space and preventing the blade plate 20 and the blade plate support portion 15 from coming into contact with each other.

Although three wing plates 20 are used in the present embodiment, the upper limit thereof is not particularly limited provided that the number of wing plates of the damper device of the present invention is two or more. For example, by narrowing the width w of the wing plates 20 and arranging more wing plates 20 with respect to the flow path of the same area, the rotation space of each wing plate 20 can be further suppressed. As the number of parts increases, the failure rate and assembly man-hours naturally increase. On the other hand, if the number of wing plates 20 is reduced, such a problem can be alleviated, but the rotation space of the wing plates 20 is increased by the amount that the number of wing plates 20 is reduced. The optimum number of wing plates of the damper device of the present invention may be determined according to the environmental conditions in which the damper device is used, in consideration of the balance between the advantages and disadvantages associated with the increase and decrease of the damper device. In this embodiment, it is preferable that the number of blades 20 is an odd number due to the structure of the link mechanism 50l described later.

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

The frame 10 is a substantially rectangular hollow frame that rotatably supports the three blades 20. The frame 10 is formed with a second opening 12 and a first opening 11 for allowing cold air to pass through the frame. Hereinafter, the hollow portion of the frame body 10 connecting the second opening portion 12 and the first opening portion 11 is referred to as a flow path portion 10a of the frame body 10. As described above, the frame 10 is formed with a flange portion 10f over the entire circumference of the first opening 11. As a result, the rigidity of the frame 10 with respect to the external force is increased, and the deformation of the frame 10 due to the external force is suppressed. Further, at the end of the frame 10 on the right side in FIG. 3A, there is a space in which the gear box 10g, which is a case-shaped portion in which the gear member 50g described later is housed, and the link mechanism 50l, which is also described later, are housed. The link mechanism arrangement portion 10l and 10l are integrally molded.

In the frame 10 of the present embodiment, when the dimension of the flow path portion 10a in the flow path direction is the height h of the flow path portion 10a, the height h of the flow path portion 10a is the width of each blade plate 20. It is said to be about the same height as w. As a result, the thickness of the entire damper device D is reduced. The height h of the flow path portion 10a does not always have to be the same as the width w of the wing plate 20, and may be further lowered depending on 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 blade plate 20, it is possible to prevent the blade plate 20 from being inadvertently applied with force during assembly or transportation of the damper device D. ..

(Structure of wing plate support)
A plurality of wing plate support portions 15 that support the wing plate 20 are formed in the frame of the frame 10. The wing plate support portion 15 is a bearing that rotatably supports the first shaft portion 21 of the wing plate 20. A pair of wing plate support portions 15 are provided for each wing plate 20 at positions corresponding to both ends of the wing plate 20 in the length l direction. Of the pair of wing plate support portions 15 of each wing plate 20, the wing plate support portion 15 on the right side in FIG. 3A is formed on the flange portion 10f, and the first axis is partly formed in the circumferential direction thereof. An insertion port 15a is formed, which is a notch in which the portion 21 is inserted in the radial direction with respect to the wing plate support portion 15. The wing plate support portion 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 wing plate support portion 15 is a recess that does not penetrate the side wall of the frame 10. As a result, the grease applied to the wing plate support portion 15 is retained in the shaft hole, and the grease is prevented from easily flowing out to the outside.

Further, in the set of the blade plate support portions 15 arranged on the uppermost side in FIG. 3A, when the blade plate 20 supporting the blade plate 20 is in the closed state, the tip portion t of the blade plate 20 is attached to the flange portion 10f. It is adjusted to the overlapping position (see FIG. 1 (a)). Further, in the set of the wing plate support portions 15 arranged at the lowermost side in FIG. 3A, when the supporting wing plate 20 is in the fully open state, at least a part of the wing plate 20 is first. It is adjusted to a position 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 blade plate support portion 15 is arranged in this way, so that the opening area of the first opening portion 11 is maximized.

FIG. 8 is a side sectional view when the wing plate 20 is arranged in a fully open state with respect to the frame 10 shown in FIG. 3 (b). As shown in FIG. 8, the opening angle of the insertion port 15a in the circumferential direction of each wing plate support portion 15 on which the insertion port 15a is formed is one of the opening radial directions of the first opening 11. The angle is not parallel and not perpendicular to the short side direction 11a, which is the direction orthogonal to the length l direction of the wing plate 20, that is, is oblique to the short side direction 11a of the first opening 11. It is set to an angle. The "opening radial direction" of the first opening 11 is a plane direction that determines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. The short side direction 11a and "parallel" refer to the direction parallel to the Y-axis direction in the coordinate axis display of FIG. 8, and the short side direction 11a and "parallel" refer to the direction parallel to the Z-axis direction in the same coordinate axis display. Say.

By forming the insertion port 15a of the wing plate support portion 15 diagonally with respect to the short side direction 11a of the first opening portion 11, the insertion port 15a is in the direction in which the rotation operation of the wing plate 15 is in the middle position. Will be opened to. Generally, when a damper device as in the present invention is transported, the damper devices are arranged and packed in a direction in which the wing plates are closed or in a direction in which the wing plates are fully opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is directed to the direction in which the rotation operation of the blade plate 20 is in the middle position, so that the blade plate 20 is winged when the damper device D is transported. It is prevented from falling off from the plate support portion 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 rotates the blade plate 20 by the driving force of the motor 40 to open and close the first opening 11, thereby communicating or blocking the flow path of cold air. The driving force of the motor 40 is transmitted to the blade plate 20 by the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l.

(motor)
A stepping motor is used for the motor 40 of the present embodiment. The stepping motor can rotate in both forward and reverse directions, and its rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control by a rotary encoder or the like in order to detect the arrangement angle of the blade plate 20 at that time. As a result, the number of parts in the entire damper device D is reduced and the size of the device is reduced.

(Gear member)
FIG. 5 is a transmission plan view showing a deceleration structure of the gear member 50 g seen from the B direction of FIG. Hereinafter, the gear member 50 g will be described with reference to FIGS. 4 and 5.

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

The frame 10 and the motor 40 are connected by an inner case 30, which is a case body arranged between them. The first gear 51 is arranged in a space partitioned 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 partitioned by the gear box 10g, which is a case-shaped portion of the frame 10, and the middle case 30, and can rotate on a support shaft 32 provided in the space. Is supported by. The fifth gear 55 is rotatably supported by a recess 33 formed in the middle case 30 and a link drive member support portion 16 which 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 reduction gear trains that reduce the rotation of the motor pinion 41 and transmit it to the fifth gear 55. The fifth gear 55 is a member in which a gear portion 55g having a fan-shaped gear that meshes with the fourth gear 54 and a shaft portion 55s that is an output shaft portion that transmits the driving force thereof to the link mechanism 50l are integrated. Is. A part of the outer peripheral surface of the shaft portion 55s of the fifth gear 55 is cut out in a plane shape. A pair of such notches are provided at positions symmetrical with respect to the circumferential direction of the shaft portion 55s.

The first gear 51 to the fourth gear 54 constituting the gear member 50 g are composite gears in which a large-diameter spur gear and a small-diameter spur gear are axially connected and integrated. The large-diameter gear 51w of the first gear 51 meshes with the motor pinion 41 of the motor 40, and the rotation of the large-diameter gear 51w is reduced and transmitted to the small-diameter gear 51n. The middle case 30 is formed with a covered tubular cover portion 31 protruding toward the frame 10, and a small diameter gear 51n of the first gear 51 is housed in the cylinder. A part of the cover portion 31 in the circumferential direction is cut out, and a part of the small diameter gear 51n is exposed from the cutout. The exposed portion of the small-diameter gear 51n meshes with the large-diameter gear 52w of the second gear 52. After that, the small diameter gear 52n of the second gear 52 to the large diameter gear 53w of the third gear 53, the small diameter gear 53n of the third gear 53 to the large diameter gear 54w of the fourth gear 54, and the small diameter of the fourth gear 54 sequentially. 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 drive member support portion 16 as viewed from the C direction 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 come into contact with each other when the blade plate 20 reaches a predetermined rotation angle, that is, when the fifth gear 55 reaches a predetermined angle position. It has stopper portions 10c and 55c that block the transmission of the driving force to the link mechanism 50l when they come into contact with each other. The power transmission mechanism 50 of the present embodiment is configured to block the transmission of the driving force by the power transmission member before the link mechanism 50l when the blade plate 20 reaches its rotation limit angle. Excessive stress is prevented from being applied to the wing plate 20 and the link mechanism 50l, and the decrease in the component life of the wing plate 20 and the link mechanism 50l is suppressed. In the present embodiment, the fifth gear 55 is provided with the stopper portion 55c, 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 the present embodiment, the gear box 10g is integrally molded 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 of FIG. FIG. 7A is a transparent side view when the wing plate 20 is in the fully open state, and FIG. 7B is a transparent side view when the wing plate 20 is in the closed state. Hereinafter, the link mechanism 50l will be described with reference to FIGS. 4 and 7.

The link mechanism 50l is composed of a first link member 56 and a second link member 57. The first link member 56 swings the second link member 57 by receiving the driving force of the fifth gear 55, whereby the second link member 57 causes the second shaft portion 22 of the three blade plates 20 to swing. Each of the wing plates 20 is reciprocated on an arc centered on the rotation center line a of the wing plates 20 to rotate each wing plate 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. There is. The shape of the fitting hole 56b of the first link member 56 corresponds to the shape of the shaft portion 55s of the fifth gear 55. As a result, the portion cut out in the plane of the shaft portion 55s 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 whose main configuration is an elongated plate-like body. Three connecting holes 57b are formed on the surface of the second link member 57 on the wing plate 20 side to rotatably support the second shaft portion 22 of the three wing plates, and on the surface on the opposite side thereof. The connecting shaft 57a supported by the shaft hole 56a of the first link member 56 projects toward the first link member 56.

In the link mechanism 50l, the wing plate 20, and the frame 10 of the present embodiment, the first link member 56 is used as a drive link, the second link member 57 is used as an intermediate link, the frame 10 is used as a fixed link, and each wing plate 20 is used as a driven link. It constitutes a four-section link mechanism. This makes it possible to synchronize the rotational movements of each blade plate 20 with a simple structure.

Here, the shaft portion 55s of the fifth gear 55 is supported by the link drive member support portion 16 of the frame 10. The link drive member support portion 16 and the above-mentioned wing plate support portion 15 are integrally molded on the frame 10 in the present embodiment. In the damper device D of the present embodiment, the blade plate support portion 15 and the link drive member support portion 16 are integrally molded with the frame body 10, so that the relative positional relationship between the blade plate 20 and the link mechanism 50l is constant. It is possible to keep it in. As a result, the influence of dimensional error and assembly error on the position accuracy of these members is suppressed, and the smooth operation of the wing plate 20 is ensured.

Further, as can be seen from the fact that the second opening 12 side of the link mechanism 50l is covered with the cover portion 19 in FIGS. 1 and 4, the swing range of the link mechanism 50l is the flow path portion of the frame 10. It is within the range of 10a. That is, the link mechanism 50l of the present embodiment does not have its end protruding outside the frame 10 in the entire process of its swinging operation. As a result, the degree of freedom in the installation location of the damper device D is increased.

Further, the shaft hole direction of the link drive member support portion 16 and the shaft hole direction of each blade plate support portion 15 extend in a direction in which they are in a straight line or parallel to each other. In the damper device D of the present embodiment, the drive force of the motor 40 can be efficiently transmitted because the shaft hole directions of the link drive member support portion 16 and each blade plate support portion 15 are the same. In addition, the load applied to each member such as the twist of the blade plate 20 is suppressed.

<Modification example>
A modification of the damper device D of the above embodiment will be described below. In the following description, configurations having the same or similar structure and function as those in the previous embodiment are designated by the same reference numerals as those in the previous embodiment, and detailed description thereof will be omitted.

9 and 10 are schematic views showing a modified example of the wing plate 20. Each of the wing plates 20d of FIG. 9 and each wing plate 20e of FIG. 10 closed the substrate portion 25, which is a portion on the base end portion b side facing the first opening 11, and the first opening 11, respectively. Occasionally, it is composed of an overlapping portion 26 which is a portion on the tip end portion t side which overlaps with the substrate portion 25 of the blade plates 20d and 20e adjacent to the right side in the drawing. As shown in FIG. 9, the gap provided between the overlapping portion 26 of the blade plate 20d and the substrate portion 25 of the adjacent blade plate 20d is when the cold air flows by extending the flow path of the cold air. The resistance of the blade 20d is increased, thereby improving the sealing performance of the blade plate 20d. The overlapping portion 26 may be in contact with the substrate portion 25 of the adjacent blade plate 20d. An elastic member 27 is attached to the overlapping portion 26 of the blade plates 20e shown in FIG. 10 on the surface of the adjacent blade plates 20e facing the substrate portion 25. As a result, the gap between the overlapping portion 26 of the wing plate 20e and the substrate portion 25 of the adjacent wing plate 20e is closed, and the sealing performance of the wing plate 20e is enhanced.

FIG. 11 is a side sectional view showing a modified example of the frame 10. FIG. 11 is a view of the frame 10d viewed from the same direction as the frame 10 of FIG. 3 (b). The frame 10d according to this modification is provided with a taper on the inner wall surface 10i of the frame 10g that partitions the flow path portion 10a so that the flow path is expanded from the first opening 11 to the second opening 12. There is. By providing such a taper on the inner wall surface 10i, the frame 10d is guided by the inclination of the taper when water droplets are formed in the flow path portion 10a due to dew condensation, for example, and the frame 10d is guided from the second opening 12 to the frame. Since the water droplets flow out of the water droplet 10, it is possible to suppress problems such as ice accumulating on the flow path portion 10a and blocking the fluid flow path or hindering the operation of the blade plate 20. When the frame 10d is arranged in the vertical flow path, the second opening 12 is arranged downward, and when it is arranged in the horizontal flow path, the frame 10d is arranged on the upstream side of the cold air. It shall be arranged with the opening 12 facing.

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

D Damper device 10 Frame body 10a Flow path portion 10i Tapered 10g Gear box 10c Stopper section 11 First opening 11a Short side direction of the first opening 12 Second opening h Flow path section 10a Height 15 Feather plate support 15a outlet 16 Link drive member support 20 Feather plate 20a Front surface 20b Back surface a Rotation center line of the wing plate 20 l Length of the wing plate 20 w Width of the wing plate 20 b Base end of the wing plate 20 t Feather plate 20 Tip 21 1st shaft 22 2nd shaft 26 Overlapping 27 Elastic 40 Motor (drive source)
50 Power transmission mechanism 50g Gear member 50l Link mechanism 55 Fifth gear (link drive member)
55g Gear part 55c Stopper part 55s Output shaft part 56 First link member 57 Second link member

Claims (12)

With the drive source
With multiple blades,
A frame body that rotatably supports each of the blades and
A power transmission mechanism that transmits the driving force of the drive source to each of the wing plates and rotates each of these wing plates.
With
The frame has a pair of openings that are fluid inlets and outlets.
When the hollow portion of the frame body communicating with the pair of openings is used as the flow path portion of the frame body,
The plurality of wing plates are arranged side by side in parallel in the flow path portion along the first opening which is one of the openings .
The power transmission mechanism is connected to the plurality of wing plates, and is connected to a link mechanism that adjusts the flow rate of the fluid by rotating these wing plates, and the driving force of the drive source. It has a link drive member, which is a shaft body that transmits to the link mechanism.
When the direction parallel to the rotation center line of each wing plate is the length direction of each wing plate and the frame body,
The link mechanism includes a first link member connected to the link drive member, and a second link member connecting the first link member and one end of each wing plate in the length direction.
The frame body has a plurality of wing plate support portions that are support portions of the wing plates.
At both ends of each wing plate in the length direction, a first shaft portion that protrudes in the length direction and is supported by the wing plate support portion is formed, and in the length direction of each wing plate. At one end, which is one end, a second shaft portion, which is a shaft portion that protrudes in the length direction and is connected to the second link member, is formed.
When the width of the wing plate is defined as the width of the wing plate in the direction orthogonal to the length direction on the front surface or the back surface of each wing plate, the first shaft portion and the second shaft portion are in the width direction of each wing plate. It is located at or near both ends and
The frame body has a link mechanism arrangement portion which is a space for accommodating the link mechanism, and the link mechanism arrangement portion is the one end portion of the plurality of wing plates in the length direction of the frame body. It is provided at a position away from the plurality of blade plates from the first shaft portion and the blade plate support portion that supports the first shaft portion.
A damper device characterized in that each of the wing plates rotates in the same direction and at the same angle as the first link member due to the rotation of the link driving member . The flow direction of the dimension of the fluid when the height of the flow path portion before Kiryuro unit,
The damper device according to claim 1, wherein the height of the flow path portion is higher than the width of each wing plate. The flow direction of the dimension of the fluid when the height of the flow path portion before Kiryuro unit,
The damper device according to claim 1, wherein the height of the flow path portion is the same as the width of each wing plate or lower than the width of each wing plate. The link mechanism is arranged in the flow path portion and is arranged .
The damper device according to any one of claims 1 to 3, wherein the swing range of the link mechanism is contained in the flow path portion. The link mechanism is arranged in the flow path portion and is arranged .
The frame has a link drive member support portion is a support portion of the front Symbol link drive member,
The damper device according to claim 1 to 4, wherein the plurality of blade plate support portions and the link drive member support portion are integrally molded with the frame body. Before SL plurality of blades support part is a bearing, each of which rotatably supports the first shaft portion,
Of the pair of wing plate support portions of each wing plate, at least one of the wing plate support portions has a diameter of the first shaft portion with respect to the wing plate support portion in a part in the circumferential direction. An outlet, which is a notch that is inserted in the direction, is formed.
The opening angle of the insertion port in the circumferential direction of each wing plate support portion on which the insertion port is formed is relative to a direction orthogonal to the length direction of each wing plate in the first opening. The damper device according to any one of claims 1 to 5, wherein the angle is not parallel and not at right angles. The pair of openings is composed of the first opening and the second opening which is the other opening.
The inner wall surface of the frame body for partitioning the flow path portion is characterized in that a taper is provided so that the flow path expands in diameter from the first opening to the second opening. The damper device according to any one of claims 1 to 6. The link mechanism is arranged in the flow path portion and is arranged .
The link drive member has a gear portion and an output shaft portion, and has a gear portion and an output shaft portion.
The driving force of the drive source is transmitted to the link drive member by one or more gear members of the power transmission mechanism.
The gear portion of the link drive member and the gear member are housed in a gear box which is a case body.
The gear portion of the link drive member, the gear member, and the gear box have a stopper portion that abuts against each other and blocks the transmission of the driving force when the link drive member reaches a predetermined angle position. The damper device according to any one of claims 1 to 7 , wherein the damper device is characterized. The link mechanism is arranged in the flow path portion and is arranged .
The frame has a link drive member support portion is a support portion of the front Symbol link drive member,
The link drive member support portion is a bearing that rotatably supports the link drive member.
Each of the plurality of wing plate support portions is a bearing that rotatably supports the first shaft portion.
Any one of claims 1 to 8 , wherein the shaft hole direction of the link drive member support portion and the shaft hole direction of each blade plate support portion extend in a direction in which they are in a straight line or parallel to each other. The damper device according to one item. The damper device according to any one of claims 1 to 9 , wherein the drive source is a stepping motor. In the width direction before Symbol each vane base end portion of the該羽plate the ends of the pivot axis side of the該羽plate, the end portion on the opposite side thereof when the distal end portion of the該羽plate,
The plurality of blades open and close the first opening by the rotation operation thereof.
Any one of claims 1 to 10 , wherein each of the wing plates overlaps the base end portion of the adjacent wing plate when the first opening is closed. The damper device described in. In the width direction before Symbol each vane base end portion of the該羽plate the ends of the pivot axis side of the該羽plate, the end portion on the opposite side thereof when the distal end portion of the該羽plate,
The damper device according to any one of claims 1 to 11 , wherein the tip end portion of each wing plate is made of an elastic member.

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