Louver

Abstract

The utility model discloses a shutter which is applied to an air interchanger, is in a sheet shape, is installed inside a connector and rotates inside the connector through a rotating part, the shape of the outer contour of the shutter is consistent with the shape of the longitudinal section of the connector, and the shutter comprises a first sheet part and a second sheet part located on one side of the first sheet part. The shutter further comprises a convex part, and the convex part is located between the first sheet-shaped part and the second sheet-shaped part. According to the blind window, the protruding part can separate airflow flowing through the outer surface of the blind window, the first sheet-shaped part and the area, facing the upper layer of the first side of the first sheet-shaped part, of the protruding part form a high-air-pressure area, and high air pressure is pressed to the outer surface of the first sheet-shaped part in the vertical direction of the blind window; and no airflow flows through the second side, facing the second sheet-shaped part, of the convex part and the outer surface of the second sheet-shaped part, and the second side of the convex part and the inner surface of the second sheet-shaped part are pushed by the blown airflow, so that the second sheet-shaped part is easily pushed away towards the downstream side of the joint, and the smooth opening of the shutter is further realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a shutter. Background Art

[0002] In order to prevent outdoor foreign objects from entering the ventilation device and prevent outdoor wind from flowing into the room, the ventilation device of the prior art needs to be provided with a shutter on the air outlet side of the ventilation device to open or close the ventilation air path, and the shutter can be switched between an open state and a closed state. When the shutter is opened, due to the air pressure around the shutter, when the wind speed of the ventilation fan is low, when the shutter is opened at an angle of 45 degrees to the horizontal direction, the high air pressure formed on the outside will prevent the shutter from being fully opened, thereby affecting the ventilation volume. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides a shutter, which separates the airflow flowing through the outer surface of the shutter by a convex portion, so that the shutter can be opened smoothly.

[0004] The venetian blind proposed in the utility model is applied to a ventilation device, is in the shape of a sheet, is installed inside a joint and rotates inside the joint through a rotating part, the shape of the outer contour of the venetian blind is consistent with the longitudinal cross-sectional shape of the joint, includes a first sheet portion and a second sheet portion located on one side of the first sheet portion; it is characterized in that the venetian blind also includes: a convex portion, the convex portion is located between the first sheet portion and the second sheet portion.

[0005] In some optional embodiments, the convex portion includes: a first bent portion, a second bent portion and a raised portion, the raised portion having a first end and a second end relative to each other; the two ends of the first bent portion are respectively connected to the first end of the first sheet portion and the raised portion, and the two ends of the second bent portion are respectively connected to the second sheet portion and the second end of the raised portion; the first sheet portion, the first bent portion, the raised portion, the second bent portion and the second sheet portion are connected in sequence.

[0006] In some optional embodiments, a midline of a longitudinal cross section of the shutter in a horizontal direction is a transverse axis, a midline in a vertical direction is a longitudinal axis, and an axial direction of the transverse axis is parallel to an axial direction of the rotating part.

[0007] In some optional embodiments, the top contour line of the raised portion is a convex line, and the raised portion is formed by bending and extending from the convex line toward the first bending portion and bending and extending toward the second bending portion along the longitudinal axis.

[0008] In some optional embodiments, the first sheet portion, the convex portion and the rotating portion are all located on the same side of the horizontal axis.

[0009] In some optional embodiments, the rotating parts include two, the two rotating parts are respectively arranged on opposite sides of the second bending part, and the two rotating parts are symmetrically arranged relative to the longitudinal axis.

[0010] In some optional embodiments, the two rotating parts rotate around the same axis, the axis is a center connecting line of the two rotating parts, and the length of the axis is less than the length of the horizontal axis.

[0011] In some optional embodiments, the shutter has an inner surface and an outer surface opposite to each other, and in a closed state of the shutter, the inner surface faces the upstream side of the joint, and the outer surface faces the downstream side of the joint;

[0012] The convex portion protrudes toward the downstream side of the joint relative to the outer surface, and is recessed toward the downstream side of the joint relative to the inner surface.

[0013] In some optional embodiments, the inner surface is provided with ribs, the ribs extend from the first sheet portion to the second sheet portion, and at least one of the ribs coincides with the longitudinal axis.

[0014] In some optional embodiments, a support rib is formed on the side of the protruding rib facing the inner surface, and the support rib extends from the protruding rib toward the outer side of the joint and is vertically connected to the inner surface of the protrusion.

[0015] In some optional embodiments, the first sheet portion is planar or curved, and / or the second sheet portion is planar or curved.

[0016] The convex portion of the shutter of the utility model can separate the airflow flowing through the outer surface of the shutter, and no airflow flows through the second side of the convex portion facing the second sheet portion and the outer surface of the second sheet portion, and the second side of the convex portion and the inner surface of the second sheet portion are pushed by the blown airflow, so that the second sheet portion can be easily pushed open toward the downstream side of the joint, thereby achieving smooth opening of the shutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A front perspective view of a shutter according to an embodiment of the present invention;

[0019] Figure 2 A front view of a shutter according to an embodiment of the utility model;

[0020] Figure 3 A rear perspective view of a shutter according to an embodiment of the present invention;

[0021] Figure 4 A rear view of the shutter according to an embodiment of the utility model;

[0022] Figure 5 A schematic diagram of a shutter in an embodiment of the utility model in an open state in a ventilation device;

[0023] Figure 6 for Figure 5 A local enlarged schematic diagram of point A in the middle.

[0024] [Reference Signs]

[0025] The shutter 100, the first sheet portion 11, the convex portion 12, the first bending portion 121, the raised portion 122, the convex surface line 1221, the first side 1222, the second side 1223, the first end 1224, the second end 1225, the second bending portion 123, the second sheet portion 13, the rotating portion 14, the axis line 141, the engaging hole 142, the protruding rib 15, the supporting rib 16, the outer surface 101, the inner surface 102, the horizontal axis 103, the longitudinal axis 104, the ventilation device 200, the joint 21, the engaging portion 22, and the limiting portion 23. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0027] The following orientation or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present disclosure. Specifically, relative to the above, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0029] The utility model provides a shutter, which is combined with Figures 1 to 6 The shutter of the utility model is described in detail.

[0030] Figure 1 It is a front perspective view of the shutter of the utility model; Figure 2 It is a front view of the shutter of the utility model; Figure 3 It is a back perspective view of the shutter of the utility model; Figure 4 It is a rear view of the shutter of the utility model; Figure 5 It is a schematic diagram of the shutter of the utility model in an open state in a ventilation device; Figure 6 for Figure 5 A local enlarged schematic diagram of point A in the middle.

[0031] The shutter 100 of the utility model is applied to the ventilation device 200. The shutter 100 is in the shape of a sheet, installed inside the joint 21 and rotated inside the joint 21 through the rotating part 14. The shape of the outer contour of the shutter 100 is consistent with the longitudinal cross-sectional shape of the joint 21, including a first sheet portion 11 and a second sheet portion 13 located on one side of the first sheet portion 11; the shutter 100 also includes a convex portion 12, which is located between the first sheet portion 11 and the second sheet portion 13.

[0032] Specifically, the ventilation device 200 has an air inlet side and an air outlet side, and the shutter 100 is installed on the air outlet side of the ventilation device 200. The ventilation volume is adjusted by opening or closing the shutter 100. A joint 21 is formed on the air outlet side of the ventilation device 200. The joint 21 is a cylindrical body, and the longitudinal section of the joint 21 is circular, elliptical or other shapes. The longitudinal section of the joint 21 refers to the section perpendicular to the flow direction of the airflow inside the joint 21. The ventilation device 200 includes a volute and a ventilation unit arranged in the volute. The joint 21 can be a separate component, which is detachably connected to the volute, or can be integrally formed with the volute of the ventilation device 200. The shape of the outer contour of the shutter 100 is consistent with the longitudinal section of the joint 21, and the shape of the outer contour of the shutter 100 is adapted to the shape of the longitudinal section of the joint 21, so that the airflow inside the joint 21 is blocked when the shutter 100 is closed.

[0033] The shutter 100 is rotatably mounted inside the joint 21 through the rotating part 14. An air outlet is formed at the end of the joint 21. The longitudinal direction of the rotating part 14 is used as a dividing line. The side of the joint 21 facing the inside of the volute is defined as the upstream side of the joint 21, and the other side of the joint 21 is defined as the downstream side of the joint 21. The shutter 100 is a sheet-shaped body. It can be understood that along the circumferential direction of the shutter 100, there is a gap between the edge of the shutter 100 and the inner wall surface of the joint 21 to ensure that the shutter 100 rotates smoothly inside the joint 21 and avoid noise caused by friction between the edge of the shutter 100 and the joint 21.

[0034] The shutter 100 has a closed state and an open state. When the shutter 100 is in the closed state, the shutter 100 is parallel or nearly parallel to the longitudinal section of the joint 21, and the shutter 100 can block the air outlet of the joint 21 to prevent foreign matter from entering the interior of the ventilation device 200 through the joint 21. When the shutter 100 is in the open state, a ventilation duct is formed between the shutter 100 and the inner wall surface of the joint 21, and the air in the ventilation device 200 flows through the ventilation duct and is blown to the outside. When the shutter 100 is in the fully open state, the shutter 100 is opened to nearly 90 degrees, that is, the shutter 100 is perpendicular to the longitudinal section of the joint 21, and the extension direction of the shutter 100 from the first sheet portion 11 to the second sheet portion 13 is consistent with the air outlet direction of the joint 21.

[0035] The venetian blind 100 includes a first sheet portion 11 and a second sheet portion 13. The first sheet portion 11 and the second sheet portion 13 may be in the same plane, or the first sheet portion 11 and the second sheet portion 13 may be staggered along the thickness direction of the venetian blind 100. A convex portion 12 is formed between the first sheet portion 11 and the second sheet portion 13. The convex portion 12 is convexly arranged toward the same side of the first sheet portion 11 and the second sheet portion 13. The convex portion 12 may be a solid body, or a sheet body with a preset curvature. The venetian blind 100 is installed in the joint 21. When the venetian blind 100 is in the closed state, the convex portion 12 convexly projects toward the downstream side of the joint 21.

[0036] The shutter 100 can be made of resin injection molding, and the material of the shutter 100 can also be metal or other materials. For example, the shutter 100 is made of resin material, and the shutter 100 is overall light and thin, which helps the shutter 100 to be opened smoothly, reduces the noise generated during the rotation process, and ensures the ventilation volume.

[0037] The opening process of the shutter 100 is described in detail below.

[0038] The ventilation device 200 is in operation, and the shutter 100 is in a closed state. The airflow passes through the volute and blows toward the joint 21. The shutter 100 is impacted by the airflow and gradually tilts to open. For example, the first sheet portion 11 tilts toward the upstream side of the joint 21, and the second sheet portion 13 tilts toward the downstream side of the joint 21, so that the shutter 100 switches from the closed state to the open state. In the process of the shutter 100 gradually opening, a first ventilation duct is formed between the edge of the first sheet portion 11 and the inner wall surface of the joint 21, and a second ventilation duct is formed between the edge of the second sheet portion 13 and the inner wall surface of the joint 21. The shutter 100 has an outer surface 101 and an inner surface 102 opposite to each other. In the closed state of the shutter 100, the outer surface 101 of the shutter 100 faces the downstream side of the joint 21, and the inner surface 102 faces the upstream side of the joint 21. The convex portion 12 has a first side facing the first sheet portion 11 and a second side facing the second sheet portion 13.

[0039] When the opening tilt angle is within the range of 35 to 45 degrees to the horizontal direction, when the airflow passes through the first ventilation duct, the airflow close to the outer surface 101 of the first side of the first sheet portion 11 and the convex portion 12 forms a low pressure due to the fast flow rate. Under the action of atmospheric pressure, the upper area of ​​the first side of the first sheet portion 11 and the convex portion 12 makes the airflow close to the edge of the blind 100 flow from the first sheet portion 11 to the first side of the convex portion 12 along the outer surface 101 of the blind 100, that is, the upper area of ​​the first side of the first sheet portion 11 and the convex portion 12 forms a high pressure area, and the high pressure presses against the outer surface 101 of the first sheet portion 11 along the vertical direction of the blind 100.

[0040] The airflow is blocked when passing through the first side of the convex portion 12, and then blows toward the inner wall surface of the joint 21 along the bending direction of the first side of the convex portion 12, so that the airflow fails to flow through the second side of the convex portion 12 and the outer surface 101 of the second sheet portion 13. Since no airflow flows through the second side of the convex portion 12 and the outer surface 101 of the second sheet portion 13, and the second side of the convex portion 12 and the inner surface 102 of the second sheet portion 13 are pushed by the airflow blown out by the ventilation device 200, it is easy to push the second sheet portion 13 toward the downstream side of the joint 21, thereby allowing the blind 100 to open smoothly.

[0041] Furthermore, a limiting portion 23 is provided on the inner wall surface of the joint 21. The limiting portion 23 is an irregular arc-shaped plane plate extending vertically from the lowest point below the inner wall toward the upper part of the inner wall. The limiting portion 23 can prevent the blind 100 from turning in the opposite direction of the normal opening when rotating, thereby preventing the external airflow from blowing back into the room.

[0042] In an embodiment of the present disclosure, the venetian blind 100 includes a first sheet portion 11, a second sheet portion 13 and a convex portion 12 located between the first sheet portion 11 and the second sheet portion 13, the convex portion 12 can separate the airflow flowing through the outer surface 101 of the venetian blind 100, and the first sheet portion 11 and the convex portion 12 form a high-pressure area in the upper area of ​​the first side of the first sheet portion 11 facing the first sheet portion 11, and the high air pressure is pressed toward the outer surface 101 of the first sheet portion 11 along the vertical direction of the venetian blind 100, while the second side of the convex portion 12 facing the second sheet portion 13 and the outer surface 101 of the second sheet portion 13 have no airflow flowing through, and the second side of the convex portion 12 and the inner surface 102 of the second sheet portion 13 are pushed by the blown airflow, so that the second sheet portion 13 is easily pushed open toward the downstream side of the joint 21, thereby achieving smooth opening of the venetian blind 100.

[0043] In the embodiments of the present disclosure, Figure 1 and Figure 2 As shown, the convex portion 12 includes a first bending portion 121, a second bending portion 123 and a raised portion 122, and the raised portion 122 has a first end 1224 and a second end 1225 opposite to each other; the two ends of the first bending portion 121 are respectively connected to the first sheet portion 11 and the first end 1224 of the raised portion 122, and the two ends of the second bending portion 123 are respectively connected to the second sheet portion 13 and the second end 1225 of the raised portion 122; the first sheet portion 11, the first bending portion 121, the raised portion 122, the second bending portion 123 and the second sheet portion 13 are connected in sequence.

[0044] Specifically, the convex portion 12 includes a first bending portion 121, a second bending portion 123 and a raised portion 122. The first bending portion 121 and the second bending portion 123 are located on opposite sides of the raised portion 122. The raised portion 122 is approximately V-shaped. The raised portion 122 has a first side 1222 facing the first bending portion 121 and a second side 1223 facing the second bending portion 123. The raised portion 122 has a first end 1224 connected to the first bending portion 121 and a second end 1225 connected to the second bending portion 123.

[0045] One end of the first bending portion 121 is connected to the first sheet portion 11, and the other end of the first bending portion 121 is connected to the first end 1224 of the raised portion 122. The curvature of the first bending portion 121 is set according to actual needs, and the first bending portion 121 realizes a smooth transition from the first sheet portion 11 to the raised portion 122. One end of the second bending portion 123 is connected to the second end 1225 of the raised portion 122, and the other end of the second bending portion 123 is connected to the second sheet portion 13. The curvature of the second bending portion 123 is set according to actual needs, and the second bending portion 123 realizes a smooth transition from the raised portion 122 to the second sheet portion 13. The first bending portion 121 and the second bending portion 123 can be symmetrically arranged relative to the center plane of the raised portion 122. The first sheet portion 11, the first bending portion 121, the protruding portion 122, the second bending portion 123 and the second sheet portion 13 are connected in sequence, and the first sheet portion 11, the first bending portion 121, the protruding portion 122, the second bending portion 123 and the second sheet portion 13 can be integrally formed by an injection molding process.

[0046] The airflow flows from the first sheet portion 11 through the first bent portion 121 along the outer surface 101 of the louver 100. Due to the obstruction of the protrusion 122, the airflow blows toward the inner wall surface of the joint 21 along the bending direction of the protrusion 122. The first bent portion 121 effectively guides the airflow, so that the airflow flowing through the first ventilation duct flows along the outer surface 101 of the first sheet portion 11 toward the outer surface 101 of the first bent portion 121, and further blows toward the inner wall surface of the joint 21 along the bending direction of the first side 1222 of the protrusion 122. The airflow fails to flow through the second side 1223 of the protrusion 122 and the outer surface 101 of the second sheet portion 13, which is conducive to the smooth opening of the louver 100.

[0047] In the embodiment of the present disclosure, the convex structure composed of the first bending portion 121, the second bending portion 123 and the protruding portion 122 allows the shutter 100 to be opened smoothly even at a lower wind speed. At the same time, when the shutter 100 is in a fully open state, the convex structure will not block the airflow, thereby ensuring maximum ventilation.

[0048] In the embodiments of the present disclosure, Figure 2 and Figure 3 As shown, the horizontal center line of the longitudinal section of the shutter 100 is the transverse axis 103 , the vertical center line is the longitudinal axis 104 , and the axial direction of the transverse axis 103 is parallel to the axial direction of the rotating part 14 .

[0049] Specifically, the longitudinal section of the shutter 100 has a horizontal direction and a vertical direction. The midline in the horizontal direction is the horizontal axis 103 , and the midline in the vertical direction is the longitudinal axis 104 . The shutter 100 is elliptical, and the length of the horizontal axis 103 is greater than the length of the longitudinal axis 104 .

[0050] The axial direction of the horizontal axis 103 is perpendicular to the air outlet direction of the ventilation device 200, and the axial direction of the rotating part 14 is parallel to the axial direction of the horizontal axis 103. The inner wall surface of the joint 21 is provided with a clamping part 22, and the clamping part 22 cooperates with the rotating part 14 to realize the rotation of the rotating part 14. For example, the clamping part 22 is a convex column, which extends from the outer surface 101 of the blind 100 along the vertical direction of the blind 100 to form the rotating part 14, and the rotating part 14 has a clamping hole 142, and the clamping part 22 passes through the clamping hole 142 of the rotating part 14, so that the rotating part 14 rotates around its axis 141. Or the clamping part 22 is provided with a clamping hole, which extends along the outer surface 101 of the blind 100 to form the rotating part 14, and the rotating part 14 is a convex column, which passes through the clamping hole of the clamping part 22, so that the rotating part 14 rotates around its axis 141.

[0051] The axis direction of the rotating part 14 is parallel to the axis direction of the horizontal axis 103 , and the axis direction of the horizontal axis 103 is perpendicular to the air outlet direction of the ventilation device 200 , so as to ensure that the rotating part 14 can rotate smoothly under the blowing action of the airflow.

[0052] In the embodiments of the present disclosure, Figure 2 As shown, the top contour line of the protrusion 122 is a convex line 1221 , and the protrusion 122 is formed by bending and extending from the convex line 1221 toward the first bending portion 121 and bending and extending toward the second bending portion 123 along the longitudinal axis 104 .

[0053] Specifically, the two sides of the longitudinal axis 104 on the shutter 100 are symmetrically arranged, and the top contour line of the raised portion 122 is a convex line 1221, which is parallel to the axial direction of the transverse axis 103, that is, the axial direction of the transverse axis 103, the axial direction of the rotating portion 14 and the convex line 1221 are parallel.

[0054] Along the longitudinal axis 104, the convex line 1221 is bent and extended toward the first bending portion 121 to form a first side 1222 of the protruding portion 122, and the convex line 1221 is bent and extended toward the second bending portion 123 to form a second side 1223 of the protruding portion 122. The first side 1222 of the protruding portion 122 and the second side 1223 of the protruding portion 122 are symmetrical about the convex line 1221. The curvature of the first side 1222 and the curvature of the second side 1223 of the protruding portion 122 are set according to actual needs.

[0055] During the opening process of the shutter 100, the air flow flows through the first ventilation duct, and the outer surface 101 of the first sheet portion 11 and the first bent portion 121 effectively guides the air flow to the first side 1222 of the raised portion 122, and the raised portion 122 can block the air flow from continuing to flow toward the second side 1223 of the raised portion 122. The first side 1222 of the raised portion 122, which is perpendicular to the air outlet direction, allows the air flow to be blown toward the inner wall surface of the joint 21 along the bending direction of the first side 1222 of the raised portion 122 to the greatest extent, effectively preventing the air flow from flowing over the first side 1222 of the raised portion 122 to the second side 1223 of the raised portion 122 and the outer surface 101 of the second sheet portion 13, and at the same time makes the shutter 100 easier to open.

[0056] When the shutter 100 is in the fully opened state, the curved surface of the first side 1222 of the raised portion 122 facilitates airflow to smoothly pass over the raised portion 12 and flow outdoors.

[0057] In the embodiments of the present disclosure, Figure 2 As shown, the first sheet portion 11 , the convex portion 12 and the rotating portion 14 are all located on the same side of the horizontal axis 103 , for example, the first sheet portion 11 , the convex portion 12 and the rotating portion 14 are all located on the upper side of the horizontal axis 103 in the vertical direction.

[0058] Specifically, the louver 100 is defined to have a top end, a bottom end, a left end, and a right end, and the distance from the horizontal axis 103 to the top end is equal to the distance from the horizontal axis 103 to the bottom end. The first sheet portion 11, the convex portion 12, and the rotating portion 14 are all located on the same side of the horizontal axis 103. During the opening process of the louver 100, the first sheet portion 11 is inclined toward the upstream side of the joint 21, and the second sheet portion 13 is inclined toward the downstream side of the joint 21.

[0059] The surface area of ​​the first sheet portion 11 is smaller than that of the second sheet portion 13. When the airflow flows through the second ventilation duct, the area of ​​the inner surface 102 of the second sheet portion 13 blown by the airflow is larger than the area of ​​the inner surface 102 of the first sheet portion 11. The thrust received by the second sheet portion 13 is greater than the thrust received by the first sheet portion 11, so that the second sheet portion 13 is easier to be pushed open, thereby achieving smooth opening of the blinds 100.

[0060] In the embodiments of the present disclosure, Figure 1 and Figure 2 As shown, the rotating parts 14 include two, and the two rotating parts 14 are respectively disposed on two opposite sides of the second bending part 123 , and the two rotating parts 14 are symmetrically disposed relative to the longitudinal axis 104 .

[0061] Specifically, there are two rotating parts 14, and the outer surface of the second bending part 123 is defined as the second bending surface of the second bending part 123. The two rotating parts 14 are arranged at intervals along the length direction of the second bending surface, and the two rotating parts 14 are arranged symmetrically with respect to the longitudinal axis 104. One rotating part 14 is located at the left end of the second bending surface, and the other rotating part 14 is located at the right end of the second bending surface.

[0062] When the airflow pushes the shutter 100 , the two rotating parts 14 drive the shutter 100 to rotate, which effectively avoids uneven force on the shutter 100 during the rotation process, and is conducive to the smooth rotation of the shutter 100 .

[0063] In the embodiments of the present disclosure, Figure 2 As shown, the two rotating parts 14 rotate around the same axis 141 . The axis 141 is the center connecting line of the two rotating parts 14 . The length of the axis 141 is less than the length of the horizontal axis 103 .

[0064] Specifically, the axes of the two rotating parts 14 coincide with each other, the center connecting line of the two rotating parts 14 is the axis line 141, and the two rotating parts 14 rotate around the same axis line 141. It can be understood that the left and right edges of the shutter 100 are configured with notches near the rotating parts 14, and the notches are used to avoid the engaging part 22 provided on the inner wall surface of the joint 21.

[0065] The length of the axis 141 is smaller than that of the horizontal axis 103 , which facilitates the assembly of the rotating portion 14 and the engaging portion 22 , and ensures that the shutter 100 will not interfere with the internal structure of the joint 21 during the rotation process.

[0066] In the embodiments of the present disclosure, Figure 5 As shown, the shutter 100 has a relative inner surface 102 and an outer surface 101. When the shutter 100 is closed, the inner surface 102 faces the upstream side of the joint 21, and the outer surface 101 faces the downstream side of the joint 21; the protrusion 12 protrudes toward the downstream side of the joint 21 relative to the outer surface 101, and is recessed toward the downstream side of the joint 21 relative to the inner surface 102.

[0067] Specifically, the two opposite surfaces of the shutter 100 are the inner surface 102 and the outer surface 101 of the shutter 100 . When the shutter 100 is in a closed state, the inner surface 102 of the shutter 100 faces the upstream side of the joint 21 , and the outer surface 101 of the shutter 100 faces the downstream side of the joint 21 .

[0068] The convex portion 12 includes a first bending portion 121, a raised portion 122 and a second bending portion 123. The convex portion 12 has a convex surface and a concave surface. Relative to the outer surface 101, the convex portion 12 protrudes toward the downstream side of the joint 21, that is, the convex surface faces the downstream side of the joint 21; relative to the inner surface 102, the convex portion 12 is recessed toward the downstream side of the joint 21, that is, the concave surface faces the upstream side of the joint 21.

[0069] The convex portion 12 can separate the airflow flowing through the outer surface 101 of the shutter 100 , and the convex and concave structures of the convex portion 12 are conducive to the lightweight of the shutter 100 .

[0070] In the embodiments of the present disclosure, Figure 3 and Figure 4 As shown, the inner surface 102 is provided with ribs 15 , and the ribs 15 extend from the first sheet portion 11 to the second sheet portion 13 , and at least one rib 15 coincides with the longitudinal axis 104 .

[0071] Specifically, the inner surface 102 of the shutter 100 is provided with a rib 15, the extension direction of the rib 15 is consistent with the extension direction of the longitudinal axis 104, and the rib 15 extends from the first sheet portion 11 to the second sheet portion 13, that is, one end of the rib 15 is close to the edge of the first sheet portion 11, and the other end of the rib 15 is close to the edge of the second sheet portion 13.

[0072] In an optional embodiment of the present disclosure, the number of the ribs 15 is not specifically limited. For example, the number of the ribs 15 is one, and the rib 15 coincides with the longitudinal axis 104; or the number of the ribs 15 is three, one rib 15 coincides with the longitudinal axis 104, and the other two ribs 15 are symmetrically arranged with respect to the longitudinal axis 104.

[0073] During the installation of the blind 100, an external force is applied to the blind 100, and the blind 100 is elastically deformed. After the engaging hole 142 of the rotating part 14 is aligned with the engaging part 22 of the joint 21, the external force is released, and the engaging part 22 is engaged with the engaging hole 142 of the rotating part 14. The blind 100 is elastically deformed during the installation process, and the ribs 15 can ensure the strength of the blind 100 after the elastic deformation, ensure that the blind 100 can be restored to its original state after installation, and help to improve the structural strength of the blind 100 to avoid deformation during use.

[0074] In the embodiments of the present disclosure, Figure 3 As shown, a support rib 16 is formed on one side of the protruding rib 15 facing the inner surface 102 . The support rib 16 extends from the protruding rib 15 toward the outer side of the joint 21 and is vertically connected to the inner surface 102 of the protrusion 12 .

[0075] Specifically, the support rib 16 extends from the side of the protruding rib 15 facing the inner surface 102 toward the inner surface 102 of the first bending portion 121, the inner surface 102 of the raised portion 122 and the inner surface 102 of the second bending portion 123. The protruding rib 15, the first bending portion 121, the raised portion 122 and the second bending portion 123 are all connected to the support rib 16, and the support rib 16 is perpendicular to the inner surface 102 of the blind 100.

[0076] When the shutter 100 is opened, the outer surface 101 of the first bent portion 121 and the outer surface 101 of the first side 1222 of the raised portion 122 are impacted by the airflow, and the support ribs 16 are beneficial to enhancing the structural strength of the raised portion 12 to prevent the raised portion 12 from being deformed under the impact of the airflow.

[0077] In the embodiment of the present disclosure, the first sheet portion 11 is planar or curved, and / or the second sheet portion 13 is planar or curved.

[0078] Specifically, the shape of the first sheet portion 11 and the shape of the second sheet portion 13 are set according to actual needs. For example, the first sheet portion 11 is planar and the second sheet portion 13 is also planar; or the first sheet portion 11 is planar and the second sheet portion 13 is curved; or the first sheet portion 11 is curved and the second sheet portion 13 is planar; or the first sheet portion 11 is curved and the second sheet portion 13 is also curved.

[0079] like Figure 3 As shown, for example, the first sheet portion 11 and the second sheet portion 13 are both in the shape of arc surfaces. The farther the first sheet portion 11 is from the convex surface, the gentler the curvature becomes. The second sheet portion 13 bends and bulges toward the outside of the joint 21 starting from the connection with the second bending portion 123 .

[0080] When the shutter 100 is opened, the airflow flows to the inner surface 102 of the second sheet portion 13. The curved surface of the second sheet portion 13 has a certain buffering effect on the airflow, which is conducive to the smooth opening of the shutter 100. After the shutter 100 is fully opened, the airflow flows through the outer surface 101 of the second sheet portion 13. The curved surface of the second sheet portion 13 is conducive to smoother air flow.

[0081] In summary, the shutter 100 of the present invention has the following beneficial effects.

[0082] A convex portion 12 is provided between the first sheet portion 11 and the second sheet portion 13 of the louver 100. The convex portion 12 includes a protruding portion 122. The protruding portion 12 can separate the airflow flowing through the outer surface 101, so that the first sheet portion 11, the first bent portion 121 and the upper region of the first side 1222 of the protruding portion 122 form a high pressure area, and the high pressure is pressed toward the outer surface 101 of the first sheet portion 11 along the vertical direction of the louver 100. Since no airflow flows through the second side 1223 of the protruding portion 122, the second bent portion 123 and the outer surface 101 of the second sheet portion 13, and the second side 1223 of the protruding portion 122, the second bent portion 123 and the inner surface 102 of the second sheet portion 13 are pushed by the airflow blown out by the ventilation device 200, it is easy to push the second sheet portion 13 toward the downstream side of the joint 21, thereby allowing the louver 100 to open smoothly.

[0083] The first sheet portion 11, the convex portion 12 and the rotating portion 14 are all located on the same side of the horizontal axis 103. The surface area of ​​the first sheet portion 11 is smaller than the surface area of ​​the second sheet portion 13. When the airflow flows through the second ventilation duct, the area of ​​the inner surface 102 of the second sheet portion 13 blown by the airflow is larger than the area of ​​the inner surface 102 of the first sheet portion 11. The thrust received by the second sheet portion 13 is greater than the thrust received by the first sheet portion 11, so that the second sheet portion 13 is easier to be pushed open, thereby achieving smooth opening of the blinds 100.

[0084] The ribs 15 extend from the first sheet portion 11 to the second sheet portion 13, and at least one rib 15 coincides with the longitudinal axis 104. The shutter 100 undergoes elastic deformation during installation, and the ribs 15 can ensure the strength of the shutter 100 after elastic deformation, ensuring that the shutter 100 can return to its original state after installation, and are conducive to improving the structural strength of the shutter 100 to avoid deformation during use. The support ribs 16 are conducive to enhancing the structural strength of the convex portion 12 to prevent the convex portion 12 from being deformed under the impact of airflow.

[0085] So far, the embodiments of the present invention have been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0086] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element are not limited to the various specific structures and shapes mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A louver, applied to a ventilation device, in the form of a sheet, installed inside a joint and rotated inside the joint through a rotating part, the outer contour of the louver is consistent with the longitudinal cross-sectional shape of the joint, comprising a first sheet portion and a second sheet portion located on one side of the first sheet portion; characterized in that: The shutter further includes a convex portion, wherein the convex portion is located between the first sheet portion and the second sheet portion.

2. The shutter according to claim 1, characterized in that: The convex portion includes: a first bending portion, a second bending portion and a convex portion, and the convex portion has a first end and a second end opposite to each other; The two ends of the first bent portion are respectively connected to the first end of the first sheet portion and the protruding portion, and the two ends of the second bent portion are respectively connected to the second end of the second sheet portion and the protruding portion; the first sheet portion, the first bent portion, the protruding portion, the second bent portion and the second sheet portion are connected in sequence.

3. The shutter according to claim 2, characterized in that: The center line of the longitudinal cross section of the shutter in the horizontal direction is the transverse axis, and the center line in the vertical direction is the longitudinal axis. The axial direction of the transverse axis is parallel to the axial direction of the rotating part.

4. The shutter according to claim 3, characterized in that: The top contour line of the raised portion is a convex line, and the raised portion is formed by bending and extending from the convex line toward the first bending portion and bending and extending toward the second bending portion along the longitudinal axis direction.

5. The shutter according to claim 3 or 4, characterized in that: The first sheet portion, the convex portion and the rotating portion are all located on the same side of the horizontal axis.

6. The shutter according to claim 5, characterized in that: The two rotating parts include two rotating parts, which are respectively arranged on two opposite sides of the second bending part, and the two rotating parts are symmetrically arranged relative to the longitudinal axis.

7. The shutter according to claim 6, characterized in that: The two rotating parts rotate around the same axis, the axis is the center connecting line of the two rotating parts, and the length of the axis is less than the length of the horizontal axis.

8. The shutter according to claim 3, characterized in that: The shutter has an inner surface and an outer surface facing each other, wherein in a closed state of the shutter, the inner surface faces the upstream side of the joint and the outer surface faces the downstream side of the joint; The convex portion protrudes toward the downstream side of the joint relative to the outer surface, and is recessed toward the downstream side of the joint relative to the inner surface.

9. The shutter according to claim 8, characterized in that: The inner surface is provided with ribs, and the ribs extend from the first sheet portion to the second sheet portion, and at least one of the ribs coincides with the longitudinal axis.

10. The shutter according to claim 9, characterized in that: A support rib is formed on one side of the protruding rib facing the inner surface. The support rib extends from the protruding rib toward the outer side of the joint and is vertically connected to the inner surface of the convex portion.

11. The shutter according to claim 1, characterized in that: The first sheet-shaped portion is planar or curved, and / or the second sheet-shaped portion is planar or curved.

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