JP2018115832A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood which can reduce impact caused during open operation of a distributing plate in the range hood to which the distributing plate attached to a surface panel is attached.SOLUTION: A range hood 1 includes: a ventilation box 3 including a fan; a hood 2 attached to the lower side of the ventilation box; an inner surface panel 5 forming an inner surface of the hood and having an opening for taking air into the ventilation box; a distributing plate 10 which covers the opening while separating from the inner surface panel; and a hinge part 30 which supports a base end of the distributing plate so that the distributing plate can rotate in a vertical direction. The hinge part has a speed reduction mechanism which generates torque in an opposite direction when the distributing plate rotates in a downward direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a range hood, and more particularly to a range hood having a current plate.

  The range hood has a built-in airflow generator such as a sirocco fan or a turbofan, which sucks indoor air from the suction port of the inner panel and exhausts it through the ducts such as the ceiling and walls. A filter is attached to the suction port to collect oily smoke and the like generated during cooking from the sucked air.

  There is a range hood in which a baffle plate is arranged on the upstream side of the sucked air, which is the front surface of the suction port of the inner panel, so that the area of the suction port is reduced. The current plate is provided in order to increase the suction force by narrowing the area of the suction port and improve the suction efficiency.

  The current plate may be attached to the range hood so as to be openable and closable in order to clean the inner panel or the current plate itself. Therefore, as an example, a mechanism for attaching and supporting the rectifying plate to the inner surface panel includes a locking portion that can be unlocked provided on the front side, and a hinge portion that can be turned on the rear side. . For example, in Japanese Patent Application Laid-Open No. 2001-004181 (Patent Document 1), the hinge portion is laterally disposed between two pairs of support arms erected from a current plate on each of two turning hook arms provided on the inner panel side. This is a structure in which the two rotating shafts that are mounted are locked so that they can be inserted and removed.

JP 2001-004181 A

  When the mounting support mechanism of the current plate is a mechanism as disclosed in Patent Document 1, when the locking portion provided on the front side is released, the current plate rotates downward around the rotation axis and hangs downward. Then, the suction port of the inner panel is opened (FIG. 4). In the case of a wall-mounted range hood that is constructed with the back side in close contact with the wall, if the current plate rotates vigorously downward, it may collide with the wall surface on the back side of the range hood. Even if it is not a wall-mounted type, it may be dangerous if there are people or objects under or behind the range hood.

  In addition, the physical burden on the hinge portion increases as the current plate rotates vigorously downward. Furthermore, the operation in which the rectifying plate rotates vigorously downward may give an impression of lack of luxury.

  The objective in one situation of this invention is to provide the range hood which can suppress the impact in the open | release operation of this baffle plate in the range hood which the baffle plate attached to the inner surface panel was attached.

According to an embodiment, the range hood includes a blower box including a fan, a hood attached below the blower box, an inner panel that forms an inner surface of the hood and has an opening that takes air into the blower box. A rectifying plate that covers the opening in a state of being separated from the inner surface panel, and a hinge portion that supports the base end of the rectifying plate so as to be pivotable in the vertical direction. A reduction mechanism that generates reverse torque is provided.
When the hinge portion generates a reverse torque when the rectifying plate is rotated downward, the rotation speed is reduced during the opening operation of the rectifying plate. For this reason, the rectifying plate does not rotate vigorously downward during the opening operation, but rotates slowly. It is possible to prevent a violent collision with a person or object below.

Preferably, the hinge portion is attached to the inner surface panel, the holder portion that fixes and encloses the rotary damper to which the hinge shaft is rotatably attached, and the hinge portion is attached to the proximal end of the rectifying plate and extends in the axial direction with respect to the hinge shaft. And a hanger portion having a fitting portion that is slidably fitted.
Accordingly, the fitting portion can be fitted to and detached from the hinge shaft by sliding the hanger portion in the axial direction relative to the holder portion including the rotary damper to which the hinge shaft is attached. As a result, the current plate can be easily attached to and detached from the inner panel.

Preferably, one of the holder part and the hanger part has a guide groove, and the other of the holder part and the hanger part is inserted into a guide groove protruding toward the one side at a position corresponding to the guide groove. The guide groove is a groove portion extending in the rotation direction, allowing the guide pin to move in the rotation direction, and moving in the axial direction. A groove portion extending in the axial direction from a position in the middle of the first groove portion, allowing movement guidance in the axial direction of the guide pin and providing movement guidance in the rotation direction. A second groove portion to be restricted.
Thus, the guide pin and the first groove portion allow the rectifying plate to rotate in the vertical direction and restrict the sliding in the axial direction. Further, the guide pin and the second groove portion allow the rectifying plate to slide in the axial direction, and limit the vertical rotation. Therefore, the position where the current plate can be attached / detached is limited according to the position where the second groove portion is extended, and the current plate is not allowed to be attached / detached at other positions. As a result, it is possible to prevent the current plate from being unintentionally detached from the inner surface panel in the open state or in an unintended position during the opening / closing operation.

Preferably, the groove center of the second groove portion extends in a step shape in the axial direction, and the movement guide in the axial direction of the guide pin is allowed in multiple stages in the rotational direction.
Thereby, when attaching and detaching the current plate, the current plate is alternately slid in the axial direction and the rotation direction. For this reason, when the current plate is removed, it can be prevented that the current plate is unintentionally pushed in the axial direction when the current plate is in the attachment / detachment position, and the current plate is not intentionally detached from the inner surface panel. .

Preferably, one of the holder part and the hanger part has a mark indicating the position where the guide pin is provided, and the other of the holder part and the hanger part is a mark indicating the position where the second groove part is provided. Have.
Thus, when the user deliberately sets the angle of the current plate to a predetermined positional relationship between the mark indicating the position where the guide pin is provided and the mark indicating the position where the second groove is provided, the current plate Can be attached to and detached from the inner panel. Therefore, for example, the current plate can be prevented from being attached and detached unintentionally by the user at other positions such as during an opening / closing operation or in an open state or a closed state.

  According to this invention, in the range hood to which the current plate attached to the inner surface panel is attached, the downward rotation speed during the opening operation of the current plate is suppressed. As a result, the impact generated by the opening operation can be suppressed.

It is a partially cutaway side view of the range hood according to the embodiment. It is a perspective view from the downward direction of the range hood of a closed state. It is a perspective view from the downward direction of the open range hood. It is an enlarged view of a magnetized part. It is an enlarged view around a hinge part. It is an enlarged view around a hinge part. It is a figure showing a holder part. It is a figure showing a hanger part. It is an assembly perspective view of a holder part and a hanger part. It is a figure for demonstrating the attachment or detachment procedure of a baffle plate.

  Hereinafter, preferred embodiments will be described with reference to the drawings. In the following description, the same parts and components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, these descriptions will not be repeated.

[Description of the entire range hood]
FIG. 1 is a partially cutaway side view of a range hood 1 according to the present embodiment, and FIGS. 2 and 3 are perspective views of the range hood 1 from below. With reference to FIG. 1, the range hood 1 has the ventilation box 3 which incorporated the fan 4 which is an airflow generator, and the flat box type hood 2 attached to the lower part by which the lower surface was open | released.

  The hood 2 has an inner surface panel 5 that is a panel forming the inner surface. An opening (not shown) is provided in the vicinity of the connection portion of the hood 2 with the blower box 3, and the inner panel 5 has an opening 5 </ b> A for taking air into the blower box 3 at a position corresponding to the opening position. A filter 6 is provided in the opening 5A.

  A rectifying plate 10 is supported below the inner panel 5 and upstream of the air flow in the opening 5A so as to cover the opening 5A while being separated from the inner panel 5. The rectifying plate 10 rectifies the flow of air sucked from the opening 5A. The rectifying plate 10 has, for example, a square plate shape having four sides which are a rear edge portion 10a, a front edge portion 10b, a right edge portion 10c, and a left edge portion 10d. In addition, each edge part 10a, 10b, 10c, 10d points out the range containing the four sides of the baffle plate 10 and its vicinity. The vicinity includes, for example, a flange (not shown) formed in a flange shape from each side of the current plate 10.

  In the range hood 1, the air in the room in which the range hood 1 is installed rises by the air flow generated by the fan 4 and hits the inner surface panel 5 and the rectifying plate 10, and the opening 5 </ b> A from the gap between the inner surface panel 5 and the rectifying plate 10. Sucked into. At that time, the air passes through the filter 6, so that oil or dust contained in the air is collected by the filter 6. The indoor air sucked from the opening 5A passes through an opening (not shown) of the hood 2 and is taken into the blower box 3, passes through the fan 4 and is exhausted to the outside through a duct (not shown).

  The hood 2 is a flat box shape that is horizontal or substantially horizontal when the range hood 1 is installed. The back surface of the hood 2 and the back surface of the blower box 3 are the same surface or substantially the same surface, and the range hood 1 can be installed with the back surface in contact with the wall surface of the room (wall-mounted type). In the following description, it is assumed that the range hood 1 is walled by the back surface, but may be walled by the side surface. Moreover, the range hood 1 may be installed in contact with the ceiling without contacting the wall surface (ceiling type).

  The periphery of the opening 5A of the inner panel 5 has a surface shape that is horizontal or substantially horizontal when the range hood 1 is installed. The edge of the inner surface panel 5 extends downward to form a rear inner wall portion 5a, a front inner wall portion 5b, a right inner wall portion 5c, and a left inner wall portion 5d. The current plate 10 is supported by the inner surface panel 5 substantially parallel to the surface around the opening 5A of the inner surface panel 5.

  The inner surface panel 5 includes a magnetic material, and includes, for example, iron, cobalt, nickel, and the like. The inner panel 5 is made of, for example, an enamel.

  The support mechanism for supporting the rectifying plate 10 with respect to the inner panel 5 includes a magnetized part 20 and a hinge part 30. The hinge portion 30 pivotally supports the rectifying plate 10 so that the rectifying plate 10 can be rotated in the vertical direction with any one of the edge portions 10a, 10b, 10c, and 10d of the rectifying plate 10 as a base end. The hinge axis of the hinge portion 30 is parallel to the surface of the inner surface panel 5 and parallel to the edge portion of the rectifying plate 10 serving as the base end.

  The magnetized part 20 is provided on the front end side of the base end of the current plate 10. The front end side of the base end is a range excluding the one edge that is the base end of the current plate 10. The magnetized part 20 is magnetically attached to the magnetized part 5B which is a corresponding position of the inner panel 5.

  Preferably, the magnetized portion 20 is attached to each of two edges adjacent to the one edge. As an example, the hinge part 30 supports the rear edge part 10a of the rectifying plate 10 as a base end, and the magnetized part 20 is provided on each of the left and right edge parts 10c and 10d of the rectifying plate 10. As a result, the user can release the magnetic attachment to the inner surface panel 5 by holding the front of the left and right edge portions 10c, 10d of the current plate 10 with both hands, and the usability can be improved. The magnetized part 20 and the hinge part 30 will be described later in detail.

  The state in which the rectifying plate 10 is magnetically attached to the inner surface panel 5 is also referred to as a closed state in the following description. When in the closed state, the rectifying plate 10 is in the first position P1 represented by the solid line in FIG.

  FIG. 2 is a perspective view from below of the range hood 1 in which the current plate 10 is closed. As shown in FIG. 2, the current plate 10 is supported so as to cover the opening 5A in the closed state. Thereby, the flow of the air sucked into the opening 5A is rectified.

  When the magnetic adhesion to the inner surface panel 5 of the rectifying plate 10 is eliminated, the rectifying plate 10 rotates downward by its own weight. The rectifying plate 10 is supported by the hinge portion 30 with respect to the inner panel 5. The state in which the current plate 10 is supported with respect to the inner surface panel 5 is also referred to as an open state in the following description. A dotted line in FIG. 1 represents a third position P3 that is the position of the current plate 10 in the open state. When the magnetic adhesion to the inner surface panel 5 is eliminated, the rectifying plate 10 rotates downward from the position P1 to the position P3 through a position P2 described later by its own weight. This operation is also called an opening operation.

  FIG. 3 is a perspective view from below of the range hood 1 in which the current plate 10 is in an open state. As shown in FIG. 3, in the open state, the rectifying plate 10 is supported with respect to the inner surface panel 5, and the opening 5A is opened. Thereby, it becomes easy to wipe off the dirt on the surface of the inner panel 5 and the surface of the current plate 10 on the inner panel 5 side.

[Description of magnetized part]
With reference to FIGS. 1 to 3, the magnetized portion 20 is not provided on the inner surface panel 5 but is provided only on the rectifying plate 10. Therefore, as shown in FIG. 3, the surface shape of the inner surface panel 5 is not restricted by the magnetized portion 20. The inner panel 5 may be provided with a magnetized part 5B on which the magnetized part 20 is magnetized. Thereby, the surface of the inner surface panel 5 can be formed smoothly.

  The magnetized portion 5B may be concave from the surface of the inner panel 5, may be convex from the surface, or may not be uneven. That is, the smooth surface may include not only a completely flat surface having no unevenness, but also some unevenness that does not hinder the wiping operation of the surface portion of the inner surface panel 5. The unevenness that does not interfere with the wiping operation refers to unevenness with a gentle gradient with respect to the surface of the inner panel 5. As an example, it refers to a degree of unevenness in which the angle to the convex shape with respect to the surface of the inner panel 5 is smaller than 90 degrees, or the angle to the concave shape is smaller than 90 degrees. Thereby, even if some unevenness | corrugation has arisen, there are few dirts, such as oil adhering to the said uneven | corrugated | grooved part, Moreover, dirt can be easily wiped off with a cloth. Therefore, by making the surface of the inner surface panel 5 in such a shape, it is possible to improve the cleanability of the surface of the inner surface panel 5, and it is possible to keep dirt such as oil from accumulating and keep it clean.

  As an example, when the hinge portion 30 pivotally supports the rear edge portion 10a of the rectifying plate 10 at the rear inner wall portion 5a of the inner panel 5, the magnetized portions 20 are provided on the left and right edge portions 10c and 10d of the rectifying plate 10, respectively. . Specifically, the magnetized part 20 is provided in the vicinity of the position of the length l (el) from the front edge part 10b of each of the left and right edge parts 10c and 10d. When the length of the left and right edge portions 10c, 10d of the current plate 10 is L, the length l is 0 <l <L. Preferably, the length l is l≈L / 3. Since the magnetized portion 20 is provided at such a position, the rectifying plate 10 is reliably magnetically attached to the inner panel 5, and the user hangs his / her hands in front of the left and right edge portions 10c and 10d of the rectifying plate 10. The magnetic adhesion to the inner surface panel 5 of the rectifying plate 10 can be easily eliminated by weighting downward.

  FIG. 4 is an enlarged view of the magnetized part 20. Referring to FIG. 4, the magnetized part 20 is attached to the left and right edge parts 10 c and 10 d of the rectifying plate 10 by the attaching part 21. The attracting surface 20a of the magnetized part 20 with respect to the inner panel 5 is a smooth surface. The attracting surface 20a is magnetically attached to the magnetized portion 5B of the inner surface panel 5 by an attracting force by a magnet.

  Preferably, the adsorption surface 20a is covered with an elastic material such as rubber. Thereby, the metal sound produced when the magnetized part 20 is magnetized to the inner surface panel 5 can be prevented or reduced. Further, even if some unevenness or distortion occurs in the magnetized part 5B, the elastic material absorbs the unevenness or distortion and is magnetically attached to the inner panel 5. Further, it is possible to prevent the magnetized part 5B from being damaged by contact with the magnet.

  Preferably, the suction surface 20a is formed such that the length of the rectifying plate 10 in the rotational direction is longer than the length in the rotational axis direction. Specifically, referring to FIG. 4, the suction surface 20 a has a length in the direction parallel to the left edge portion 10 d (or right edge portion 10 c) of the rectifying plate 10, and the front edge portion 10 b (or rear edge portion). It is longer than the length in the direction parallel to 10a). Thereby, the efficiency of the magnetic attachment to the inner surface panel 5 of the baffle plate 10 can be improved.

  The attachment portion 21 attaches the magnetically attached portion 20 to the rectifying plate 10 so that the angle of the magnetically attached portion 20 with respect to the rectifying plate 10 is variable. The attachment portion 21 includes a fixed portion 21A fixed to the current plate 10 and a connecting portion 21B. One end of the connecting portion 21 </ b> B is fixed to the magnetized portion 20. Thus, the one end is fixed to the current plate 10 as a base end. The other end of the connecting portion 21B is pivotally supported by the fixed portion 21A so as to be rotatable in the same direction as the rotation direction of the rectifying plate 10. As a result, the load on the magnetized portion 20 when the current plate 10 is opened is suppressed.

  Preferably, the connecting portion 21 </ b> B is elastically deformable in a direction orthogonal to the rotation direction of the rectifying plate 10. As an example, the connecting portion 21B is formed of an elastic material such as resin, for example. Alternatively, the connecting portion 21B has an elastic structure such as a spring. As a result, even if some unevenness or distortion occurs in the magnetized part 5B, the magnetically attached part 20 is reliably and efficiently attached to the inner panel 5 at an angle corresponding to the unevenness or distortion. Can be made.

[Description of hinge part]
5 and 6 are enlarged views of the vicinity of the hinge portion 30. FIG. FIG. 5 shows a state in which the hinge portion 30 supports the current plate 10, and FIG. 6 shows a state in which the current plate 10 is removed. Referring to FIGS. 5 and 6, hinge portion 30 includes a holder portion 50 attached to inner surface panel 5 and hanger portion 11 attached to the proximal end of rectifying plate 10.

As an example, two holder portions 50 are attached to the left and right sides of the rear inner wall portion 5a of the inner surface panel 5 at positions that are substantially symmetrical. Thereby, the baffle plate 10 can be opened and closed stably. Moreover, the burden concerning the hinge part 30 in the case of opening operation | movement can be reduced. Alternatively, one holder portion 50 may be attached to substantially the center in the left-right direction of the rear inner wall portion 5a of the inner surface panel 5. Thereby, while being able to reduce the number of parts, cleaning property can be improved by simplifying a structure.
The hanger part 11 is attached to the position corresponding to the hinge part 30 of the rear edge part 10a which becomes the base end of the current plate 10.

  The hinge part 30 generates reverse torque when the current plate 10 is rotated downward. Thereby, the downward rotation speed of the current plate 10 is reduced during the opening operation. That is, the hinge part 30 has a deceleration function for decelerating when the rectifying plate 10 is rotated downward.

  The holder part 50 fixes and includes the damper 40. The damper 40 is, for example, a rotary damper or a swing damper. The hinge shaft 41 is rotatably attached to the damper 40. The damper 40 generates a reverse torque with respect to the downward rotation of the hinge shaft 41.

  FIG. 7 is a view showing the holder portion 50, and FIG. 8 is a view showing the hanger portion 11. 8A is a view of the hanger portion 11 as viewed from the current plate 10 side (the front surface), and FIG. 8B is a view from the back surface side thereof, that is, the inner panel 5 side (the back surface). It is a figure. In FIG. 7, the damper 40 is removed from the holder portion 50 for explanation.

  Referring to FIG. 7, the holder portion 50 includes a case portion 50A bent into a semi-cylindrical shell shape having an inner space capable of accommodating the damper 40, a stopper 53 protruding above the case portion 50A, Have

The damper 40 is built in the interior of the case portion 50 </ b> A so that the hinge shaft 41 attached to the damper 40 is exposed from the end of the holder portion 50. The damper 40 is fixed in the inner space of the holder unit 50.
The stopper 53 has a contact surface 33a that is continuous with the outer periphery of the case portion 50A and forms an angle with the outer peripheral surface.

  A cutout portion 51 is provided through the outer periphery of the case portion 50A. The notch 51 includes a first groove 51a extending in the rotation direction, and a second groove 51b extending in the axial direction from a position in the middle of the first groove 51a toward one end of the case portion 50A. ,including. Preferably, the groove center 51m of the second groove portion 51b extends stepwise in the axial direction. In other words, the groove center 51m of the second groove portion 51b extends in the axial direction through one or more bent portions 51d. Specifically, referring to FIG. 7, the second groove portion 51 b extending in the axial direction from the middle position of the first groove portion 51 a has a groove center via the bent portion 51 d with respect to the second groove portion 51 b. Are connected to the second groove 51c extending continuously in the axial direction.

  Furthermore, a mark 52 indicating the position of the second groove portions 51b and 51c is attached to the other end of the outer periphery of the case portion 50A. The mark 52 is, for example, a groove extending in the axial direction. Preferably, the mark 52 includes marks 52b and 52c indicating the positions of the second groove portions 51b and 51c, respectively. The marks 52b and 52c are, for example, grooves that are bent corresponding to the groove centers 51m of the second groove portions 51b and 51c and extend in the axial direction.

  With reference to FIG. 8 (A), the hanger part 11 has the joining part 12 for joining with the baffle plate 10 on the surface side, and the stopper 17 projected above the joining part 12. FIG.

  The joint part 12 has, for example, a hook part that can hold the rear edge part 10a of the rectifying plate 10 and a bolt hole for connecting the rear edge part 10a held by the hook part with a bolt. The hanger part 11 is joined to the rear edge part 10a by the joining part 12.

  The stopper 17 is provided continuously with the joint 12 and extends in parallel with the joint 12. The stopper 17 has an abutting surface 17 a that forms an angle from the surface of the hanger portion 11 on the side far from the joint portion 12. Further, a mark 16 indicating the position of a guide pin 15 to be described later is attached to a surface substantially parallel to the surface of the hanger portion 11 of the stopper 17. The mark 16 is, for example, a groove extending in parallel with the joint portion 12.

  Referring to FIG. 8B, the entire back surface of hanger portion 11 constitutes cover portion 13 that covers case portion 50 </ b> A of hinge portion 30. The cover portion 13 has a shape that matches the outer periphery of the case portion 50A.

  The cover portion 13 has an end portion provided with a fitting portion 14 that is detachably fitted to the hinge shaft 41. The fitting portion 14 is an annular portion whose central axis direction is parallel to the rear edge portion 10 a of the rectifying plate 10. The fitting part 14 regulates the rotation of the hinge shaft 41 in the fitted state.

  A guide pin 15 protrudes from the cover portion 13. The length of the guide pin 15 in the direction parallel to the joint 12 is equal to or less than the groove width of the first groove 51a. The length of the guide pin 15 in the direction orthogonal to the joint 12 is equal to or less than the groove width of the second groove 51b continuous from the first groove 51a. The height of the guide pin 15 from the back surface of the cover portion 13 is less than the length from the surface of the case portion 50A of the holder portion 50 to the damper 40 built in the case portion 50A.

[Explanation of rectifying plate opening operation]
FIG. 9 is an assembled perspective view of the holder part 50 and the hanger part 11. Referring to FIG. 9, the hinge shaft 41 exposed from the holder portion 50 has the fitting portion 14 and the shaft core aligned with each other, and the hanger portion from the end where the fitting portion 14 of the hanger portion 11 is not provided. 11 is inserted into the fitting portion 14 in the direction of the broken line arrow B in FIG. The hinge shaft 41 inserted into the fitting portion 14 is fitted with the fitting portion 14. When the hinge shaft 41 is inserted into the fitting portion 14 in the direction of the broken line arrow B, the cover portion 13 encloses the outer periphery of the case portion 50A of the holder portion 50.

  The hinge shaft 41 fitted to the fitting portion 14 is fixed in the rotation direction. Thereby, a rotational force is transmitted from the hanger part 11 to the hinge shaft 41 through the fitting part 14. That is, the rotational force generated by the vertical rotation of the current plate 10 joined to the joint 12 of the hanger part 11 is transmitted to the hinge shaft 41 via the fitting part 14.

  The hinge shaft 41 rotates with respect to the damper 40 fixed to the holder portion 50 by the rotational force transmitted through the fitting portion 14. The damper 40 generates reverse torque (upward) when the hinge shaft 41 is rotated downward, and applies the torque to the hinge shaft 41. The generated torque is transmitted to the hanger part 11, that is, the rectifying plate 10 joined to the joint part 12 of the hanger part 11 through the fitting part 14.

  As an example of a mechanism for fixing the hinge shaft 41 fitted to the fitting portion 14 in the rotation direction, the hinge shaft 41 and the fitting portion 14 each have a specific shape for restricting the rotation. The specific shape of the hinge shaft 41 and the fitting portion 14 is, for example, a D-shape in which a corresponding position of a circular cross section on a plane orthogonal to the axial direction is partially cut off. The notch 41a in the cross section of the hinge shaft 41 and the notch 14a of the fitting portion 14 are arranged at positions that coincide with each other when the hinge shaft 41 is inserted into the fitting portion 14 in the direction of the broken line arrow B in FIG. Is done. Therefore, when the hinge shaft 41 is inserted into the fitting portion 14 in the direction of the broken line arrow B in FIG. 9, the notch 41 a of the hinge shaft 41 is engaged with the notch 14 a of the fitting portion 14. Thereby, the hinge axis | shaft 41 is axially stopped. That is, the rectifying plate 10 to which the hanger portion 11 is attached is locked to the inner surface panel 5 to which the holder portion 50 that houses the damper 40 to which the hinge shaft 41 is attached is rotatably attached.

  The torque generated by the damper 40 in the direction opposite to the rotation of the rectifying plate 10 is transmitted to the rectifying plate 10, so that the rotational speed when the rectifying plate 10 rotates downward is reduced. That is, the rotation speed during the opening operation of the current plate 10 becomes slower than the rotation speed due to its own weight. Therefore, when opening the rectifying plate 10, the rectifying plate 10 does not rotate vigorously downward but rotates gently. Thereby, it is possible to prevent a violent collision with the wall surface on the back surface of the range hood 1 or a violent collision with a person or an object below the range hood 1 when the rectifying plate 10 is opened. Further, since the rectifying plate 10 is gently rotated from the position P1 to the position P3, it is possible to suppress a load applied to the hinge portion 30 serving as a rotation fulcrum. In addition, a high-class opening operation can be realized.

[Description of rectifying plate attachment / detachment mechanism]
The hinge shaft 41 fitted into the fitting portion 14 is fitted into the fitting portion 14 so as to be detachable in the direction of the broken line arrow B in FIG. For this reason, the magnetism of the magnetized portion 20 is eliminated, and as shown in FIG. Can be removed.

  When the current plate 10 is removed from the inner surface panel 5, the cleanability of the inner surface panel 5 is further improved and the cleanability of the current plate 10 is also improved. In the following description, the position of the hanger part 11 in the rotational direction in which the hinge shaft 41 can be inserted into and removed from the fitting part 14, that is, the rotational direction with respect to the holder part 50 of the hanger part 11 shown in FIG. 9. The position is also referred to as an attachment / detachment position of the current plate 10.

  The attachment / detachment position of the rectifying plate 10 is represented by a second position P2 in the range from the position P1 in the closed state to the position P3 in the open state in FIG. The position P2 is a position different from the position P1. By doing so, in a state where the rectifying plate 10 is attached to the inner surface panel 5, the locking is released unintentionally, and the rectifying plate 10 can be prevented from falling from the inner surface panel 5. Further, the position P2 is a position different from the position where the current plate 10 is in a state of hanging down from the inner surface panel 5 in the downward direction. By doing in this way, latching is cancelled | released unintentionally during the open | release operation of the baffle plate 10, and it can prevent that the baffle plate 10 falls.

  The guide pin 15 protrudes at a position on the cover portion 13 corresponding to the first groove portion 51a in a state where the rectifying plate 10 is mounted. As a result, the guide pin 15 is fitted into the first groove 51a in a state where the rectifying plate 10 is mounted. And the guide pin 15 inserted and inserted in the 1st groove part 51a is moved and guided along the 1st groove part 51a, ie, a rotation direction, with the rotation of the baffle plate 10 in the up-down direction. In other words, the first groove 51a and the guide pin 15 allow the rectifying plate 10 attached to the inner surface panel 5 to rotate in the vertical direction and limit sliding in the axial direction.

  The second groove 51b extends in the axial direction from the position at the attachment / detachment position of the guide pin 15 fitted and inserted into the first groove 51a. As a result, the guide pin 15 is guided to move along the second groove 51b, that is, in the direction of arrow A in FIG. 6 when the current plate 10 is slid in and removed from the direction of arrow A in FIG. In other words, the second groove 51b and the guide pin 15 allow sliding in the axial direction of the rectifying plate 10 attached to the inner surface panel 5 and restrict rotation in the vertical direction.

  Since the first groove portion 51a and the second groove 51b are provided in the holder portion 50 and the guide pin 15 is provided in the hanger portion 11, the attachment / detachment position of the rectifying plate 10 is within the range from the position P1 to the position P3. The rectifying plate 10 is not allowed to be attached / detached at the other positions. Thereby, it is possible to prevent the rectifying plate 10 from being unintentionally detached from the inner surface panel 5 in the open state or in an unintended position during the opening / closing operation.

  In addition, the 1st groove part 51a and the 2nd groove | channel 51b, and the guide pin 15 may be provided with respect to the holder part 50 and the hanger part 11 contrary to said description. That is, the first groove part 51 a and the second groove 51 b may be provided in the hanger part 11, and the guide pin 15 may be provided in the holder part 50.

  The marks 16 and 52 are arranged at positions that coincide with each other when the current plate 10 is attached to the inner surface panel 5 of the hanger part 11 and the holder part 50 when they are in the attach / detach position. That is, the rectifying plate 10 is slid in the direction A in FIG. 6 as the position in the rotational direction in which the mark 16 of the hanger part 11 is collinear with the mark 52 of the holder part 50 attached to the inner panel 5. The inner panel 5 can be attached and detached.

  Since the marks 16 and 52 are provided, the rectifying plate 10 is attached to and detached from the inner panel 5 only when the user intentionally sets the marks 16 and 52 to the same straight line. It is possible to prevent the user from unintentionally attaching and detaching at other positions such as the closed state.

  Preferably, the second groove 51b extends in the axial direction from the position of the guide pin 15 at the attachment / detachment position of the first groove 51a, and is further connected to the second groove 51c where the groove center is continuous via the bent part 51d. The That is, the center of the second groove portion extends in a step shape in the axial direction. For this reason, when the rectifying plate 10 is attached and detached, the guide pins 15 inserted and inserted into the second groove portions are alternately guided in the axial direction and the rotation direction.

  Preferably, the mark 52 of the holder part 50 includes a mark 52b corresponding to the second groove 51b and a mark 52c corresponding to the second groove 51c. By providing the marks 16, 52 b, 52 c, the rectifying plate 10 is attached to and detached from the inner panel 5 only when the user intentionally makes the mark 16 have the same angle as the mark 52 b or the mark 52 c. A method of attaching and detaching the current plate 10 in this case will be described in detail with reference to FIG.

  FIGS. 10A to 10D are diagrams for explaining a procedure for attaching and detaching the rectifying plate 10 when the groove center of the second groove portion extends in a step shape in the axial direction. Specifically, the mounting procedure of the rectifying plate 10 is shown in the order of FIG. 10 (A) → FIG. 10 (B) → FIG. 10 (C) → FIG. 10 (D), and FIG. 10 (D) → FIG. The procedure for removing the rectifying plate 10 from the inner surface panel 5 in the order of 10 (B) → FIG. 10 (A) is shown. Moreover, the solid line arrow A of FIG. 10 represents the direction at the time of attachment (attachment), and the dotted line arrow B represents the direction at the time of removal.

  When the rectifying plate 10 is attached, the hinge shaft 41 is attached to the cover portion 13 of the hanger portion 11 so that the mark 16 of the hanger portion 11 is aligned with the mark 52c of the holder portion 50 with respect to the inner surface panel 5. (FIG. 10A). Thereby, the guide pin 15 on the back surface of the cover portion 13 is inserted into the second groove 51c.

  Next, the rectifying plate 10 is slid in the direction of the solid arrow A, that is, in the direction in which the hinge shaft 41 is directed toward the fitting portion 14 (rightward) (FIG. 10B). As a result, the guide pin 15 is guided to move in the axial direction in the second groove 51c.

  When the guide pin 15 reaches the bent portion 51d, the movement guide is stopped by the bent portion 51d. Therefore, next, the rectifying plate 10 is rotated in the direction of rotation in the direction of the solid line arrow A until the angle at which the mark 16 is collinear with the mark 52b of the holder portion 50 (FIG. 10C). Thereby, the guide pin 15 on the back surface of the cover portion 13 is guided to move to the second groove 51b through the bent portion 51d.

  Next, the rectifying plate 10 is slid in the direction of the solid arrow A, that is, in the direction toward the fitting portion 14 (rightward) (FIG. 10D). Accordingly, the guide pin 15 is guided to move in the second groove 51b in the axial direction until it reaches the first groove 51a. That is, the hinge shaft 41 is fitted to the fitting portion 14 and the rectifying plate 10 is attached.

  When the rectifying plate 10 is removed, the direction of the dotted arrow B, that is, the hinge, is set so that the mark 16 of the hanger portion 11 is collinear with the mark 52b of the holder portion 50 with respect to the inner panel 5. The rectifying plate 10 is slid in the direction toward the tip of the shaft 41 (leftward) (FIG. 10D). As a result, the guide pin 15 moves from the first groove 51a to the second groove 51b and is guided to move in the axial direction in the second groove 51b.

  When the guide pin 15 reaches the bent portion 51d, the movement guide is stopped by the bent portion 51d. Therefore, next, the rectifying plate 10 is rotated in the direction of rotation in the direction of the dotted arrow B until the angle at which the mark 16 is collinear with the mark 52c of the holder portion 50 (FIG. 10C). Thereby, the guide pin 15 on the back surface of the cover portion 13 is guided to move to the second groove 51c through the bent portion 51d.

  Next, the rectifying plate 10 is slid in the direction of the dotted arrow B, that is, in the direction toward the tip of the hinge shaft 41 (leftward) (FIG. 10B). Thus, the guide pin 15 is guided to move in the second groove 51c in the axial direction until it reaches the end of the second groove 51c (FIG. 10A). That is, the hinge shaft 41 is removed from the fitting portion 14 and the rectifying plate 10 is removed.

  By extending the second groove portion in a stepped manner in the axial center of the groove center, the rectifying plate 10 is attached to the axial core when the rectifying plate 10 is attached and detached as described in FIGS. 10 (A) to (D). It is necessary to slide alternately in the direction and the rotation direction. For this reason, when the rectifying plate 10 is removed, the rectifying plate 10 is unintentionally pushed in the axial direction when the rectifying plate 10 is in the attaching / detaching position, and the rectifying plate 10 is unintentionally detached from the inner surface panel 5. Can be prevented.

  In addition, the holding mechanism of the rectifying plate 10 having the magnetized portion 20 shown in the above description is an example of the holding mechanism, and is not limited to the one described above. A general mechanism having an attachment support portion may be used.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Range hood 2 Hood 3 Blower box 4 Fan 5 Inner panel 5A Opening part 5B Magnetized part 5a Rear inner wall part 5b Front inner wall part 5c Right inner wall part 5d Left inner wall part 6 Filter 10 Current plate 10a Rear edge part 10b Front edge part 10c right edge portion 10d left edge portion 11 hanger portion 12 joint portion 13 cover portion 14 fitting portion 14a notch 15 guide pin 16 mark 17 stopper 17a abutting surface 20 magnetized portion 20a adsorbing surface 21 mounting portion 21A fixing portion 21B connection Part 30 Hinge part 40 Damper 41 Hinge shaft 41a Notch 50 Holder part 50A Case part 53 Stopper 33a Abutting surface 51 Notch part 51a First groove part 51b, 51c Second groove part 51d Bent part 51m Groove center 52, 52b, 52c Mark P1 First position P2 Second position P3 Third position

Claims (5)

A blower box with a fan;
A hood attached below the blower box;
Forming an inner surface of the hood, and an inner panel having an opening for taking air into the blower box;
A rectifying plate that covers the opening in a state of being separated from the inner panel;
A hinge portion that supports the base end of the current plate so as to be pivotable in the vertical direction, and
The hinge portion has a speed reduction mechanism that generates a reverse torque when the rectifying plate rotates downward. The hinge part is
A holder portion that is attached to the inner surface panel and includes a rotary damper that is rotatably attached to a hinge shaft;
The range hood according to claim 1, further comprising: a hanger portion attached to the base end of the current plate and having a fitting portion that fits slidably in the axial direction with the hinge shaft. One of the holder part and the hanger part has a guide groove,
The other of the holder part and the hanger part has a guide pin that is protruded toward the one side at a position corresponding to the guide groove, and is guided by being inserted into the guide groove.
The guide groove is
A groove portion extending in the rotation direction, the first groove portion allowing movement guide of the guide pin in the rotation direction and restricting movement guide in the axial direction;
A groove extending in the axial direction from a position in the middle of the first groove, the guide pin allowing movement guidance in the axial direction and restricting movement guidance in the rotation direction; The range hood of Claim 2 containing 2 groove parts. The groove center of the second groove portion extends stepwise in the axial direction,
The range hood according to claim 3, wherein movement guidance of the guide pin in the axial direction is allowed in multiple stages in the rotation direction. The one of the holder part and the hanger part has a mark indicating a position where the guide pin is provided,
The range hood according to claim 3 or 4, wherein the other of the holder part and the hanger part has a mark indicating a position where the second groove part is provided.

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