Range hood

Abstract

The present invention discloses a range hood. A range hood according to an embodiment of the present invention includes a body and a connection assembly. The body includes a first component and a second component. The connection assembly includes a base and a support that are detachably and rotatably connected to one another. The base is connected to the first component, and the support is connected to the second component, in such a manner that the first component and the second component are detachably and rotatably connected to one another. In the range hood according to the embodiment of the present invention, the first component may be a mounting plate, and the second component may be a condensation plate. By connecting the base to the first component or the mounting plate and the support to the second component or the condensation plate, the first component or the mounting plate is quickly, detachably and rotatably connected to the second component or the condensation plate.

Description

FIELD

[0001] The present invention relates to the field of kitchen appliance technologies, and more particularly, to a range hood.BACKGROUND

[0002] In the related art, in order to reduce the assembly complexity of a condensation plate of a range hood, facilitate the operation of an operator and the cleaning and maintenance of the condensation plate, the condensation plate is usually mounted at the range hood through a quick-release assembly. However, the mounting of the quick-release assembly is usually insecure, resulting in poor reliability. The condensation plate is prone to fall out accidentally due to external collision or vibration, thereby causing the condensation plate to fail or even be damaged.SUMMARY

[0003] An embodiment of the present invention provides a range hood.

[0004] A range hood according to an embodiment of the present invention includes a body and a connection assembly. The body includes a first component and a second component. The connection assembly includes a base and a support that are detachably and rotatably connected to one another. The base is connected to the first component, and the support is connected to the second component, in such a manner that the first component and the second component are detachably and rotatably connected to one another.

[0005] In the range hood according to the embodiment of the present invention, the first component may be a mounting plate, and the second component may be a condensation plate. By connecting the base to the first component or the mounting plate and the support to the second component or the condensation plate, the first component or the mounting plate is quickly, detachably and rotatably connected to the second component or the condensation plate.

[0006] Optionally, the base includes a connection portion, a guide post, and a locking protrusion. The connection portion is connected to the first component. The guide post is connected to the connection portion. The locking protrusion is disposed at a side surface of the guide post. The support includes a mounting portion and a connection plate. The mounting portion may be connected to the second component. The connection plate may be connected to the mounting portion. The connection plate may have a locking hole engaged with the locking protrusion. The guide post may be inserted into the locking hole to enable the locking protrusion to pass through the locking hole, in such a manner that the connection plate is limited between the locking protrusion and the connection portion.

[0007] In this way, the base may be fixed at the first component or the mounting plate by connecting the connection portion and the first component, and the support may be fixed at the second component or the condensation plate by connecting the mounting portion and the second component. Then, the connection plate is limited between the locking protrusion and the connection portion by the guide post being inserted into the locking hole and passing through the locking protrusion. As a result, the first component or the mounting plate is quickly, detachably and rotatably connected to the second component or the condensation plate.

[0008] Optionally, the locking protrusion may include a first locking protrusion and a second locking protrusion. Preferably, the first locking protrusion and the second locking may be arranged at intervals on the side surface of the guide post in an axial direction of the guide post. The guide post may be inserted into the locking hole, to enable the first locking protrusion and the second locking protrusion to pass through the locking hole sequentially, in such a manner that the connection plate is limited between the second locking protrusion and the connection portion.

[0009] Optionally, an orthographic projection of the first locking protrusion on the connection plate and an orthographic projection of the second locking protrusion on the connection plate are at least partially offset.

[0010] In this way, in the process that the second component rotates relative to the first component or the condensation plate rotates relative to the mounting plate, the second locking protrusion is engaged with the locking hole, causing the second locking protrusion to slide out of the locking hole. However, since the orthographic projection of the first locking protrusion on the connection plate and the orthographic projection of the second locking protrusion are at least partially offset. In this case, the first locking protrusion and the locking hole are also offset. Therefore, the connection plate cannot disengage from the first locking protrusion. Thus, the second component is prevented from disengaging from the first component during the rotation process, or the condensation plate is prevented from disengaging from the mounting plate during the rotation process.

[0011] Optionally, the first locking protrusion includes at least two first protrusions uniformly arranged in a circumferential direction of the guide post; and / or the second locking protrusion includes at least two second protrusions uniformly arranged in the circumferential direction of the guide post.

[0012] In this way, the two first protrusions and the two second protrusions can share stress, which helps to improve a service life of the first locking protrusion and a service life of the second locking protrusion.

[0013] Optionally, a first guide portion is provided on a side of the first protrusion away from the connection portion; and / or a second guide portion is provided on a side of the second protrusion away from the connection portion.

[0014] In this way, the first guide portion facilitates the insertion and locking of the first protrusion, and the second guide portion facilitates insertion and locking of the second protrusion. As a result, the quick-release base is easily used.

[0015] Optionally, an orthographic projection of an end surface of the second guide portion on the connection plate is located within an orthographic projection of the first protrusion on the connection plate.

[0016] In this way, after the first locking protrusion passes through the locking hole, an edge of the locking hole directly rests on the second guide portion. Therefore, the second guide portion can directly guide the second locking protrusion to pass through the locking hole without any jam. In this way, a reduction in a difficulty of locking the quick-release base is further facilitated.

[0017] Optionally, the first locking protrusion may be symmetrical about a first symmetry line; and the second locking protrusion may be symmetrical about a second symmetry line. Each of the first symmetry line and the second symmetry line may extend in a radial direction of the guide post, and an angle between the first symmetry line and the second symmetry line may be smaller than 90°.

[0018] In this way, since the first component may only rotate by 90° relative to the second component, if the angle between the first symmetry line and the second symmetry line is greater than 90°, it is difficult to quickly disassemble and assemble the first component and the second component. Therefore, the angle between the first symmetry line and the second symmetry line should be smaller than 90°, so that the difficulty of assembling and disassembling of the first component and the second component is reduced.

[0019] Optionally, a spacing between the second locking protrusion and the connection portion may be greater than a thickness of the connection plate and smaller than 1.2 times the thickness of the connection plate.

[0020] In this way, while not affecting the rotation of the connection plate at the guide post, limiting a movable range of the connection plate between the second locking protrusion and the connection portion helps to reduce a possibility of the connection plate to be disengaged from the second locking protrusion. At same time, limiting the movable range of the connection plate between the second locking protrusion and the connection portion can also reduce wear of the connection plate on the guide post.

[0021] Optionally, a spacing between the first locking protrusion and the second locking protrusion in an axial direction of the guide post may be greater than a thickness of the connection plate and smaller than 1.2 times the thickness of the connection plate.

[0022] In this way, while not affecting the rotation of the connection plate at the guide post between the first locking protrusion and the second locking protrusion, limiting a movable range of the connection plate herein helps to reduce a possibility of the connection plate disengaged from the first locking protrusion. At same time, limiting the movable range of the connection plate can also reduce the wear of the connection plate on the guide post.

[0023] Optionally, a third guide portion is provided on the side of the guide post away from the connection plate.

[0024] In this way, the third guide portion may be configured to guide the guide post to be inserted into the locking hole. As a result, assembling and disassembling of the connection assembly are facilitated.

[0025] Optionally, the connection portion includes a supporting plate and a fixing plate connected to the supporting plate. The fixing plate is connected to the first component, and the guide post is connected to the supporting plate. The connection portion further includes a reinforcement rib. The reinforcement rib has an end connected to the supporting plate and another end of the reinforcement rib connected to the fixing plate.

[0026] In this way, it is beneficial to improve structural strength and a service life of the base and to reduce maintenance cost of the base.

[0027] Optionally, the connection plate has two locking holes at two ends of the connection plate.

[0028] In this way, the two ends of the support can be quickly assembled and disassembled with the base. As a result, the support is easily adapted to more mounting cases.

[0029] Optionally, the two bases may be provided and arranged at intervals on the first component, and axes of two guide posts of the two bases may be collinear. The two supports are provided and arranged at intervals on the second component, and the two supports are in a one-to-one correspondence with the two bases.

[0030] In this way, cooperation of the two bases and the two supports helps to improve reliability of the detachable and rotatable connection between the first component and the second component.

[0031] Optionally, the guide posts of the two bases may face towards a same side.

[0032] In this way, the first component is quickly and easily assembled and disassembled with the second component.BRIEF DESCRIPTION OF THE DRAWINGS

[0033] These and other aspects and advantages of embodiments of the present invention will become apparent and more readily appreciated from the following descriptions made with reference to the accompanying drawings. FIG. 1 is a schematic structural view of a range hood according to an embodiment of the present invention. FIG. 2 is a schematic structural view of a base of a range hood according to an embodiment of the present invention. FIG. 3 is a front view of a base of a range hood according to an embodiment of the present invention. FIG. 4 is a schematic structural view of a support of a range hood according to an embodiment of the present invention.

[0034] Description of reference numerals of main elements: range hood 100, connection assembly 10, base 11, connection portion 111, supporting plate 1111, fixing plate 1112, reinforcement rib 1113, guide post 112, third guide portion 1121, first locking protrusion 113, first protrusion 1131, first guide portion 1132, second locking protrusion 114, second protrusion 1141, second guide portion 1142, support 12, mounting portion 121, connection plate 122, locking hole 123, first component 20, second component 30.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are illustrative only, and are intended to explain rather than limit the present invention. In the description of the present invention, it is to be understood that, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "over", "below", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "in", "out", "clockwise", "anticlockwise" refer to the directions and location relations which are the directions and location relations shown in the drawings, and for describing the present invention and for describing in simple, and which are not intended to indicate or imply that the device or the elements are disposed to locate at the specific directions or are structured and performed in the specific directions, which could not to be understood to the limitation of the present invention. In the description of the present invention, "plurality of" means two or more than two, unless specified otherwise.

[0036] In the present invention, unless specified or limited otherwise, terms "mounted," "connected," and "coupled" are understood broadly, such as fixed, detachable mountings, connections and couplings or integrated, and can be mechanical or electrical mountings, connections and couplings, and also can be direct and via media indirect mountings, connections, and couplings, and further may be inner mountings, connections and couplings of two components or interaction relations between two components. For those skilled in the art, the specific meaning of the above-mentioned terms in the embodiments of the present invention may be understood according to specific circumstances.

[0037] In the description of the present invention, unless otherwise specified and limited, the term "above" or "below" when referring to the first feature with respect to the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through another feature between them. In addition, the first characteristic is "on", "above", "over" the second characteristic may refer to the first characteristic is right over the second characteristic or is diagonal above the second characteristic, or just refer to the horizontal height of the first characteristic is higher than the horizontal height of the second characteristic. The first characteristic is "below" or "under" the second characteristic may refer to the first characteristic is right over the second characteristic or is diagonal under the second characteristic, or just refer to the horizontal height of the first characteristic is lower than the horizontal height of the second characteristic.

[0038] Many different embodiments or examples according to the present invention are used to realize different structures of the present invention. To simplify the present invention, components and settings in specific examples are described herein. Of course, they are merely exemplary and are not intended to limit the present invention. Moreover, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for purposes of simplicity and clarity and is in itself indicative of a relationship among the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art may recognize invention of other processes and / or use of other materials.

[0039] In the related art, in order to reduce the assembly complexity of a condensation plate of a range hood, facilitate the operation of an operator and the cleaning and maintenance of the condensation plate, the condensation plate is usually mounted at the range hood through a quick-release assembly. However, the mounting of the quick-release assembly is usually insecure, resulting in poor reliability. The condensation plate is prone to fall out accidentally due to external collision or vibration, thereby causing the condensation plate to fail or even be damaged.

[0040] Referring to FIG. 1, according to an embodiment of the present invention, there is provided a range hood 100. The range hood 100 includes a body and a connection assembly 10. The body includes a first component 20 and a second component 30. The connection assembly 10 includes a base 11 and a support 12. The base 11 is detachably and rotatably connected to the support 12, the base 11 is connected to the first component 20, and the support 12 is connected to the second component 30, in such a manner that the first component 20 and the second component 30 are detachably and rotatably connected to one another.

[0041] In the range hood 100 according to the embodiment of the present invention, the first component 20 may be a mounting plate, and the second component 30 may be a condensation plate. By connecting the base 11 to the first component 20 or the mounting plate and the support 12 to the second component 30 or the condensation plate, the first component 20 or the mounting plate is quickly, detachably and rotatably connected to the second component 30 or the condensation plate.

[0042] In other embodiments, the first component 20 may be a condensation plate of the range hood 100, and the second component 30 may be a mounting plate of the range hood 100.

[0043] In some embodiments, the connection assembly 10 includes a base 11 and a support 12. The base 11 includes a connection portion 111, a guide post 112, and a locking protrusion. The connection portion 111 is connected to the first component 20. The guide post 112 is connected to the connection portion 111. The locking protrusion is disposed at a side surface of the guide post 112. The support 12 includes a mounting portion 121 and a connection plate 122. The mounting portion 121 is connected to the second component 30. The connection plate 122 is connected to the mounting portion 121. The connection plate 122 has a locking hole 123 engaged with the locking protrusion. The guide post 112 is configured to be inserted into the locking hole 123, to enable the locking protrusion to pass through the locking hole 123, in such a manner that the connection plate 122 is limited between the locking protrusion and the connection portion 111.

[0044] In this way, the base 11 may be fixed at the first component 20 or the mounting plate by connecting the connection portion 111 and the first component 20, and the support 12 may be fixed at the second component 30 or the condensation plate by connecting the mounting portion 121 and the second component 30. Then, the connection plate 122 is limited between the locking protrusion and the connection portion 111 by the guide post 112 being inserted into the locking hole 123 and passing through the locking protrusion. As a result, the first component 20 or the mounting plate is quickly, detachably and rotatably connected to the second component 30 or the condensation plate.

[0045] In some embodiments, the locking protrusion includes a first locking protrusion 113 and a second locking protrusion 114. The first locking protrusion 113 and the second locking protrusion 114 are arranged at intervals on the side surface of the guide post 112 in an axial direction of the guide post 112. The guide post 112 is configured to be inserted into the locking hole 123, to enable the first locking protrusion 113 and the second locking protrusion 114 to pass through the locking hole 123 sequentially, in such a manner that the connection plate 122 is limited between the second locking protrusion 114 and the connection portion 111. An orthographic projection of the first locking protrusion 113 on the connection plate 122 and an orthographic projection of the second locking protrusion 114 on the connection plate 122 are at least partially offset.

[0046] In this way, in the process that the second component 30 rotates relative to the first component 20 or the condensation plate rotates relative to the mounting plate, the second locking protrusion 114 is engaged with the locking hole 123, causing the second locking protrusion 114 to slide out of the locking hole 123. However, since the orthographic projection of the first locking protrusion 113 on the connection plate 122 and the orthographic projection of the second locking protrusion 114 on the connection plate 122 are at least partially offset. In this case, the first locking protrusion 113 and the locking hole 123 are also offset. Therefore, the connection plate 122 cannot disengage from the first locking protrusion 113. Thus, the second component 30 is prevented from disengaging from the first component 20 during the rotation process, or the condensation plate is prevented from disengaging from the mounting plate during the rotation process.

[0047] Specifically, the connection portion 111 has a fixing hole connected to the mounting plate, and the connection portion 111 is detachably arranged at the mounting plate by a fastener passing through the fixing hole. The mounting portion 121 also has a fixing hole, and the mounting portion 121 is detachably arranged at the condensation plate by a fastener passing through the fixing hole.

[0048] The base 11 is integrally formed as one piece. Similarly, the support 12 is also integrally formed as one piece.

[0049] In other embodiments, the base 11 and the mounting plate may also be integrally formed as one piece. Similarly, the support 12 and the condensation plate are also integrally formed as one piece.

[0050] Referring to FIG. 2, in some embodiments, the first locking protrusion 113 includes at least two first protrusions 1131 uniformly arranged in a circumferential direction of the guide post 112; and / or the second locking protrusion 114 includes at least two second protrusions 1141 uniformly arranged in the circumferential direction of the guide post 112.

[0051] In this way, the two first protrusions 1131 and the two second protrusions 1141 can share stress, which helps to improve a service life of the first locking protrusion 113 and a service life of the second locking protrusion 114.

[0052] Specifically, in this embodiment, two first protrusions 1131 are provided and symmetrical about an axis of the guide post 112. Similarly, the two second protrusions 1141 are symmetrical about the axis of the guide post 112.

[0053] For ease of processing, the first protrusion 1131 and the second protrusion 1141 have identical shapes and sizes. Further, the first protrusion 1131 has a columnar shape, and the first protrusion 1131 of the columnar shape has a a side surface connected to a side surface of the guide post 112. In this embodiment, a cross section of the first protrusion 1131 has a shape that splice a rectangle and a semicircle together.

[0054] Referring to FIG. 2, in some embodiments, a first guide portion 1132 is provided at a side of the first protrusion 1131 away from the connection portion 111; and / or a second guide portion 1142 is provided at a side of the second protrusion 1141 away from the connection portion 111.

[0055] In this way, the first guide portion 1132 facilitates insertion and locking of the first protrusion 1131, and the second guide portion 1142 facilitates insertion and locking of the second protrusion 1141. As a result, a quick-release base 11 is easily used.

[0056] Specifically, the first guide portion 1132 and the second guide portion 1142 have same shapes. In this embodiment, the first guide portion 1132 is in a shape of a semi-conical frustum approximately. The first guide portion 1132 has a first guide surface at a side surface of the first guide portion 1132. The first guide surface includes a conical frustum surface and an inclined surface located at each of two sides of the conical frustum surface.

[0057] Further, in this embodiment, a fillet is provided at each of connections among all surfaces of the first locking protrusion 113.

[0058] Referring to FIG. 3, in some embodiments, an orthographic projection of an end surface of the second guide portion 1142 on the connection plate 122 is located within an orthographic projection of the first protrusion 1131 on the connection plate 122.

[0059] In this way, after the first locking protrusion 113 passes through the locking hole 123, an edge of the locking hole 123 directly rests on the second guide portion 1142. Therefore, the second guide portion 1142 can directly guide the second locking protrusion 114 to pass through the locking hole 123 without any jam. In this way, a reduction in a difficulty of locking the quick-release base 11 is further facilitated.

[0060] Specifically, during a mounting of the condensation plate, the locking hole 123 of the connection plate 122 is usually first arranged around the guide post 112. Then, the first locking protrusion 113 and the second locking protrusion 114 are sequentially passed through the locking hole 123 through translation and rotation. The orthographic projection of the end face of the second guide portion 1142 on the connection plate 122 is located within the orthographic projection of the first protrusion 1131 on the connection plate 122, and therefore during the mounting of the condensation plate by an operator, when the first locking protrusion 113 is aligned with the locking hole 123 and then the translation is performed, the first locking protrusion 113 passes through the locking hole 123. In this case, it is only necessary to continue translating without a need to rotate, and then the edge of the locking hole 123 directly rests on the second guide portion 1142. Under the guidance of the second guide portion 1142, the second locking protrusion 114 can easily pass through the locking hole 123.

[0061] In this embodiment, an orthographic projection of one side edge of the first guide surface on the connection plate 122 should just fall within an orthographic projection of a second guide surface.

[0062] In some embodiments, the first locking protrusion 113 is symmetrical about a first symmetry line, and the second locking protrusion 114 is symmetrical about a second symmetry line. The first symmetry line and the second symmetry line extend in a radial direction of the guide post 112, and the angle between the first symmetry line and the second symmetry line is smaller than 90°.

[0063] In this way, since the first component 20 may only rotate by 90° relative to the second component 30, if the angle between the first symmetry line and the second symmetry line is greater than 90°, it is difficult to quickly disassemble and assemble the first component 20 and the second component 30. Therefore, the angle between the first symmetry line and the second symmetry line should be smaller than 90°, so that the difficulty of assembling and disassembling of the first component 20 and the second component 30 is reduced.

[0064] Specifically, in this embodiment, the condensation plate may usually only rotate by about 90° when in use. When only one first protrusion 1131 and one second protrusion 1141 are provided, if the first symmetry line and the second symmetry line extend in the radial direction of the guide post 112 and the angle between the first symmetry line and the second symmetry line is greater than 90°, the condensation plate cannot be mounted because the condensation plate can only rotate by 90°. Therefore, when only the one first protrusion 1131 and the one second protrusion 1141 are provided, the first symmetry line and the second symmetry line extend in the radial direction of the guide post 112 and the angle between the first symmetry line and the second symmetry line should be smaller than 90°.

[0065] When one or more first protrusion 1131 and one or more second protrusion 1141 are provided and the plurality of first protrusions 1131 and the plurality of second protrusions 1141 are uniformly arranged circumferentially at the side surface of the guide post 112, due to the increase in number, a minimum angle is only required to be smaller than 90° due to the increased number of first protrusions 1131 and second protrusions 1141. When more than two first protrusions 1131 and more than two second protrusions 1141 are provided, a minimum angle should be smaller than and equal to 90°. Therefore, the angle problem does not need to be considered in this case.

[0066] Referring to FIG. 2, in some embodiments, a spacing between the second locking protrusion 114 and the connection portion 111 is greater than a thickness of the connection plate 122 and smaller than 1.2 times the thickness of the connection plate 122.

[0067] In this way, while not affecting the rotation of the connection plate 122 at the guide post 112, limiting the movable range between the second locking protrusion 114 and the connection portion 111 helps to reduce a possibility of the connection plate 122 to be disengaged from the second locking protrusion 114. At same time, limiting the movable range of the connection plate 122 between the second locking protrusion 114 and the connection portion 111 can also reduce wear of the connection plate 122 on the guide post 112.

[0068] Specifically, since the connection plate 122 should be detachably and rotatably disposed between the second locking protrusion 114 and the connection portion 111 after the normal mounting, a sufficient distance should be left between the second locking protrusion 114 and the connection portion 111 to enable the connection plate 122 to rotate without obstruction. Therefore, the spacing between the second locking protrusion 114 and the connection portion 111 is greater than the thickness of the connection plate 122 and smaller than 1.2 times the thickness of the connection plate 122.

[0069] In this embodiment, the spacing between the second locking protrusion 114 and the connection portion 111 should be slightly larger than the thickness of the connection plate 122. Further, in order to reduce friction between the connection plate 122 and the guide post 112, grease may be applied between the guide post 112 and the connection plate 122.

[0070] In some embodiments, a spacing between the first locking protrusion 113 and the second locking protrusion 114 in an axial direction of the guide post 112 is larger than a thickness of the connection plate 122 and smaller than 1.2 times the thickness of the connection plate 122.

[0071] In this way, while not affecting the rotation of the connection plate 122 on the guide post 112 between the first locking protrusion 113 and the second locking protrusion 114, limiting the movable range of the connection plate 122 herein can help to reduce a possibility of the connection plate 122 to be engaged from the first locking protrusion 113. At same time, limiting the movable range of the connection plate 122 can also reduce wear of the connection plate 122 on the guide post 112.

[0072] Specifically, when the second locking protrusion 114 is disengaged from the locking hole 123 due to external force exerted on the condensation plate, the connection plate 122 may rotate to a position between the first locking protrusion 113 and the second locking protrusion 114 due to the obstruction of the first locking protrusion 113. Therefore, in order to enable the condensation plate to remain functional when the connection plate 122 rotates to the position between the first locking protrusion 113 and the second locking protrusion 114, the spacing between the first locking protrusion 113 and the second locking protrusion 114 in the axial direction of the guide post 112 is greater than the thickness of the connection plate 122.

[0073] In this embodiment, the spacing between the first locking protrusion 113 and the second locking protrusion 114 in the axial direction of the guide post 112 is slightly greater than the thickness of the connection plate 122. Further, in order to reduce the friction between the connection plate 122 and the guide post 112, the grease may be applied between the guide post 112 and the connection plate 122.

[0074] Referring to FIG. 2, in some embodiments, a third guide portion 1121 is provided at the side of the guide post 112 away from the connection plate 122.

[0075] In this way, the third guide portion 1121 may be configured to guide the guide post 112 to be inserted into the locking hole 123. As a result, the assembling and disassembling of the connection assembly 10 are facilitated.

[0076] Specifically, the guide post 112 has a free end at the side of the guide post 112 away from the connection plate 122, and the third guide portion 1121 is disposed at the free end.

[0077] The third guide portion 1121 is in a shape of a conical frustum. Further, a fillet is provided at a connection between a top surface and a side surface of the third guide portion 1121, and a fillet is also provided at an edge corner where the third guide portion 1121 is connected to the guide post 112.

[0078] In some embodiments, the connection portion 111 includes a supporting plate 1111 and a fixing plate 1112 connected to the supporting plate 1111. The fixing plate 1112 is connected to the first component 20, the guide post 112 is connected to the supporting plate 1111. The connection portion 111 further includes a reinforcement rib 1113. The reinforcement rib 1113 has an end connected to the supporting plate 1111 and another end connected to the fixing plate 1112.

[0079] In this way, it is beneficial to improve structural strength and a service life of the base 11 and to reduce maintenance cost of the base 11.

[0080] Specifically, the supporting plate 1111 is disposed at a side edge of the fixing plate 1112 and perpendicular to the fixing plate 1112, and the guide post 112 is perpendicular to the supporting plate 1111. In this embodiment, the reinforcement rib 1113 is a right-angled triangle. The reinforcement rib 1113 has a right-angled side connected to the supporting plate 1111 and another right-angled side connected to the fixing plate 1112. The fillet is disposed at each of the edge and the corner of the supporting plate 1111 and the edge and the corner of the fixing plate 1112.

[0081] Further, an elongated groove is formed at the mounting plate. The elongated groove has a width slightly greater than a thickness of the fixing plate 1112, and a length slightly greater than a length of the fixing plate 1112. During the mounting, the fixing plate 1112 passes through the elongated groove and is fixed at a back surface of the mounting plate.

[0082] A limit portions is provided at each of two sides of the connection between the supporting plate 1111 and the fixing plate 1112, and two ends of the limit portions abut with two ends of the elongated groove to prevent the supporting plate 1111 from sliding in the elongated groove.

[0083] Two fixing holes are formed at the fixing plate 1112. During the mounting between the mounting plate and the condensation plate, a distance between one of the two fixing holes farther from the condensation plate and the supporting plate 1111 is greater than a distance between the other one of the two fixing holes closer to the condensation plate and the supporting plate 1111.

[0084] In other embodiments, in order to avoid stress concentration, the reinforcement rib 1113 may also be arranged in a trapezoidal shape. The reinforcement rib 1113 has two sides perpendicular to each other. One of the two sides of the reinforcement rib 1113 is connected to the supporting plate 1111, and the other one of the two sides of the reinforcement rib 1113 is connected to the fixing plate 1112.

[0085] Referring to FIG. 4, in some embodiments, two locking holes 123 are formed at two ends of the connection plate 122.

[0086] In this way, the two ends of the support 12 can be quickly assembled and disassembled with the base 11. As a result, the support 12 is easily adapted to more mounting cases.

[0087] Specifically, the connection plate 122 is connected to a side edge of the mounting portion 121, and the two locking holes 123 are formed at two ends of the connection plate 122 and symmetrical about a midline of the mounting portion 121. In this way, when the support 12 is connected to the condensation plate, the mounting portion 121 may be arranged at a right side of the connection plate 122 and connected to the condensation plate by a part of the support 12 located at a left edge of the condensation plate, and the mounting portion 121 may be arranged at a left side of the connection plate 122 and connected to the condensation plate by a part of the support 12 located at a right edge of the condensation plate, to enable the support 12 to be adapted to more different mounting cases.

[0088] In some embodiments, two bases 11 are provided and arranged at intervals on the first component 20; axes of two guide posts 112 are collinear; two supports 12 are provided and arranged on the second component 30 at intervals. The two supports 12 are in a one-to-one correspondence with the two bases1.

[0089] In this way, cooperation between the two bases 11 and the two support 12 helps to improve reliability of the detachable and rotational connection between the first component 20 and the second component 30.

[0090] Specifically, in this embodiment, the two supports 12 are arranged at the two sides of the condensation plate, and the two bases 11 cooperate and are in a one-to-one correspondence with the two supports 12. The guide post 112 serves as a rotary shaft of the condensation plate. To ensure that the condensation plate may rotate normally, the axes of the two guide posts 112 are collinear. As a result, the condensation plate has only one rotation axis.

[0091] In other embodiments, other numbers of bases 11 may also be provided, and axes of the guide posts 112 of all supports 12 should be collinear. The number of supports 12 is equal to the number of bases 11, and the supports 12 are in a one-to-one correspondence with the bases 11.

[0092] Referring to FIG. 1, in some embodiments, the guide posts 112 of the two bases 11 face towards a same side.

[0093] In this way, the first component is quickly and easily assembled and disassembled with the second component.

[0094] Specifically, the two bases 11 are identical in size, shape, etc., and the guide posts 112 of the two bases 11 face towards a same side. During the mounting, each of two connection plates 122 at the condensation plate is arranged around the guide post 112 in one direction, and the two connection plates 122 are detachably rotated and arranged between the second locking protrusion 114 and the connection portion 111 through the rotation and the translation.

[0095] In other embodiments, the two guide posts 112 may also be opposite to each other. In this case, a distance from an end portion of one of the two guide posts 112 to a root of the other one of the two guide posts 112 should be slightly smaller than a distance between the two connection plates 122, and the first locking protrusion 113 of any one of the two guide posts 112 should be oriented in same direction as the second locking protrusion 114 of the other one of the two guide posts 112. During the mounting, the connection plate 122 at one side should be locked between the second locking protrusion 114 and the connection portion 111 first, and then the guide post 112 at another side should be inserted into the connection plate 122 at the other side. As a result, the connection plates 122 at the two sides may be detachably rotated and arranged between the first locking protrusion 113 and the second locking protrusion 114 through the rotation and the translation.

[0096] In the description of this specification, descriptions with reference to the terms "an embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" etc., mean that specific features, structure, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. The appearances of the above phrases in various places throughout this specification are not necessarily referring to the same embodiment or example of the present invention. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0097] In addition, the terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance, or to implicitly show the number of technical features indicated. Thus, the feature defined with "first" and "second" may explicitly or implicitly comprise one or more this feature. In the description of the present invention, "a plurality of" means at least two, for example, two or three, unless specified otherwise.

Claims

1. A range hood (100), comprising: a body comprising a first component (20) and a second component (30); and a connection assembly (10) comprising a base (11) and a support (12) that are detachably and rotatably connected to one another, wherein: the base (11) is connected to the first component (20), and the support (12) is connected to the second component (30), in such a manner that the first component (20) and the second component (30) are detachably and rotatably connected to one another.

2. The range hood (100) according to claim 1, wherein: the base (11) comprises a connection portion (111) connected to the first component (20), a guide post (112) connected to the connection portion (111), and a locking protrusion disposed at a side surface of the guide post (112); the support (12) comprises a mounting portion (121) connected to the second component (30), and a connection plate (122) connected to the mounting portion (121), the connection plate (122) having a locking hole (123) engaged with the locking protrusion; and the guide post (112) is configured to be inserted into the locking hole (123) to enable the locking protrusion to pass through the locking hole (123) in such a manner that the connection plate (122) is limited between the locking protrusion and the connection portion (111).

3. The range hood (100) according to claim 2, wherein the locking protrusion comprises a first locking protrusion (113) and a second locking protrusion (114), wherein: the first locking protrusion (113) and the second locking protrusion (114) are arranged at intervals on the side surface of the guide post (112) in an axial direction of the guide post (112); the guide post (112) is configured to be inserted into the locking hole (123) to enable the first locking protrusion (113) and the second locking protrusion (114) to pass through the locking hole (123) in sequence in such a manner that the connection plate (122) is limited between the second locking protrusion (114) and the connection portion (111); and an orthographic projection of the first locking protrusion (113) on the connection plate (122) and an orthographic projection of the second locking protrusion (114) on the connection plate (122) are at least partially offset.

4. The range hood (100) according to claim 3, wherein: the first locking protrusion (113) comprises at least two first protrusions (1131) uniformly arranged in a circumferential direction of the guide post (112); and / or the second locking protrusion (114) comprises at least two second protrusions (1141) uniformly arranged in the circumferential direction of the guide post (112).

5. The range hood (100) according to claim 4, wherein: a first guide portion (1132) is provided on a side of the first protrusion (1131) away from the connection portion (111); and / or a second guide portion (1142) is provided on a side of the second protrusion (1141) away from the connection portion (111).

6. The range hood (100) according to claim 5, wherein an orthographic projection of an end surface of the second guide portion (1142) on the connection plate (122) is located within an orthographic projection of the first protrusion (1131) on the connection plate (122).

7. The range hood (100) according to any one of claims 3-6, wherein: the first locking protrusion (113) is symmetrical about a first symmetry line; and the second locking protrusion (114) is symmetrical about a second symmetry line, each of the first symmetry line and the second symmetry line extending in a radial direction of the guide post (112), and an angle between the first symmetry line and the second symmetry line being smaller than 90°.

8. The range hood (100) according to any one of claims 3-7, wherein a spacing between the second locking protrusion (114) and the connection portion (111) is greater than a thickness of the connection plate (122) and smaller than 1.2 times the thickness of the connection plate (122).

9. The range hood (100) according to any one of claims 3-8, wherein a spacing between the first locking protrusion (113) and the second locking protrusion (114) in an axial direction of the guide post (112) is greater than a thickness of the connection plate (122) and smaller than 1.2 times the thickness of the connection plate (122).

10. The range hood (100) according to any one of claims 2-9, wherein a third guide portion (1121) is provided on a side of the guide post (112) away from the connection plate (122).

11. The range hood (100) according to any one of claims 2-10, wherein the connection portion (111) comprises: a supporting plate (1111) and a fixing plate (1112) connected to each other, the fixing plate (1112) being connected to the first component (20), and the guide post (112) being connected to the supporting plate (1111); and a reinforcement rib (1113) having an end connected to the supporting plate (1111) and another end connected to the fixing plate (1112).

12. The range hood (100) according to any one of claims 2-11, wherein the connection plate (122) has two locking holes (123) at two ends of the connection plate (122).

13. The range hood (100) according to any one of claims 2-12, wherein: two bases (11) are provided and arranged at intervals on the first component (20), axes of two guide posts (112) of the two bases (11) being collinear; and two supports (12) are provided and arranged at intervals on the second component (30), the two supports (12) being in a one-to-one correspondence with the two bases (11).

14. The range hood (100) according to claim 13, wherein the guide posts (112) of the two bases (11) face towards a same side.

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