Rotary connecting assembly, turning plate assembly and range hood

Abstract

The utility model provides a rotatory connection subassembly, flap subassembly and range hood, including first support, second support, rotating shaft and locking piece, rotating shaft has head and connecting section, connecting section passes through first support and second support in order, locking piece is connected to the one end of connecting section far away from head. The connecting section is rotationally connected with the first support, the second support is fixedly connected with the connecting section so as to rotate relative to the first support, a damping piece is arranged on the connecting section, and the damping piece provides rotation damping opposite to the rotation direction in the process that the second support rotates relative to the first support. According to the rotary connecting assembly, based on the arrangement of the damping piece, rotary damping can be provided, and the rotating speed of the second support can be reduced, so that the smooth rotating effect is provided, vibration is reduced, the rotating stability is effectively improved, it is guaranteed that the second support can rotate smoothly, and the problem of abnormal sound in the rotating process is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood technical field, specifically, it relates to a rotary connection assembly, a flap assembly and a range hood. BACKGROUND

[0002] With the improvement of people's life quality, the requirement of kitchen cooking environment is also increasing, and the range hood has become one of the indispensable kitchen household appliances in modern family. The range hood mostly includes a shell and a flap, part of the shell is enclosed to form a smoke collecting cavity with an air inlet, and the flap is rotatably connected to the shell. When the flap opens the air inlet, it is convenient to suck the oil fume. The flap not only can guide the oil fume, but also can avoid the problem of oil fume escaping.

[0003] Most of the existing flaps have no damping structure, which is unstable during rotation and prone to stop or shake, and the rotation is not smooth, accompanied by abnormal noise. UTILITY MODEL CONTENT

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the utility model, a rotary connection assembly is provided, and the technical scheme is as follows.

[0005] The rotary connection assembly includes a first support, a second support, a shaft and a locking piece. The shaft has a head and a connecting segment. The connecting segment sequentially passes through the first support and the second support. The locking piece is connected to one end of the connecting segment away from the head. The connecting segment is rotatably connected to the first support. The second support is fixedly connected to the connecting segment to be rotatable relative to the first support. A damping piece is arranged on the connecting segment. The damping piece provides a rotational damping opposite to the rotation direction during the rotation of the second support relative to the first support.

[0006] The rotary connection assembly of the utility model can provide rotational damping based on the arrangement of the damping piece, slow down the rotation speed of the second support, provide smooth rotation effect, reduce vibration, effectively improve the stability of rotation, ensure that the second support can rotate smoothly, and avoid abnormal noise during rotation.

[0007] Exemplarily, the damping piece is arranged on the side of the first support away from the second support. In this way, the damping piece can effectively provide rotational damping during the rotation of the second support relative to the first support, ensuring the stability during rotation.

[0008] Exemplarily, an elastic piece is arranged between the damping piece and the head. The elastic piece is configured to generate an axial damping parallel to the axial direction of the connecting segment when subjected to an external force. In this way, the elastic piece can compress the shaft in the axial direction, effectively improve the stability of rotation, ensure that the second support can rotate smoothly, and avoid abnormal noise during rotation.

[0009] For example, a first bowl-shaped gasket is sleeved on the connecting section and disposed between the head and the elastic member. This provides a good cushioning effect during assembly and reduces shock and vibration during rotation of the second bracket relative to the first bracket, ensuring stability during rotation and providing a certain degree of anti-loosening effect.

[0010] For example, the elastic member is sleeved on the connecting section, which makes it easier to install the elastic member and avoids the problem of the elastic member falling off during the rotation process.

[0011] For example, the connecting section has a flattened portion, which forms a cross-section of the connecting section into two opposing arcuate sections and two opposing straight sections. The first bracket is provided with a circular through-hole having a radius greater than that of the arcuate sections. This effectively ensures that the rotating shaft can rotate relative to the first bracket.

[0012] For example, the connecting section has a flattened portion, and the cross-section of the connecting section is formed by the flattened portion into two opposing arcuate sections and two opposing straight sections. The second bracket is provided with a first mating hole, which has a first straight hole wall, a second straight hole wall, and two first arcuate hole walls. The two straight sections respectively mate with the first straight hole wall and the second straight hole wall, and the arcuate section mates with the first arcuate hole wall. This effectively ensures that the second bracket remains stationary relative to the connecting section during rotation, allowing torque on the second bracket to be effectively transferred to the connecting section. Furthermore, by having the two straight sections respectively mate with the first straight hole wall and the second straight hole wall, and the arcuate section mates with the first arcuate hole wall, stability during rotation is effectively ensured, and positioning and installation of the second bracket are facilitated.

[0013] For example, the connecting section has a flattened portion, and the cross-section of the connecting section is formed by the flattened portion into two opposing arcuate sections and two opposing straight sections. The damping member is provided with a second mating hole, which has a third straight hole wall, a fourth straight hole wall, and two second curved hole walls. The two straight sections respectively mate with the third straight hole wall and the fourth straight hole wall, and the curved section mates with the second curved hole wall. This effectively ensures that the damping member remains stationary relative to the connecting section during rotation, while rotating relative to the first bracket, allowing the damping member to effectively provide rotational damping. Furthermore, by having the two straight sections respectively mate with the third straight hole wall and the fourth straight hole wall, and the curved section mates with the second curved hole wall, stability during rotation is effectively ensured, and positioning and installation of the damping member are facilitated.

[0014] For example, a barrier sheet is provided on the connecting section, separating the first bracket from the second bracket by the barrier sheet. This prevents the second bracket from rotating relative to the first bracket for a long time, causing wear and deformation, and affecting stability during rotation, when there is a certain pressure between the second bracket and the first bracket.

[0015] For example, a second bowl-shaped gasket is sleeved on the connecting section and disposed between the locking member and the second bracket. This provides a good cushioning effect during assembly and reduces shock and vibration during rotation of the second bracket relative to the first bracket, ensuring stability during rotation and providing a certain degree of anti-loosening effect.

[0016] According to another aspect of the present invention, a flap assembly is provided, comprising a flap and the aforementioned rotating connection assembly, wherein the flap is fixedly connected to a second bracket. Since the aforementioned rotating connection assembly has the aforementioned beneficial effects, the flap assembly including the aforementioned rotating connection assembly also has the aforementioned beneficial effects, which will not be further detailed here.

[0017] According to another aspect of the present invention, a range hood is provided, comprising a housing and the aforementioned flap assembly. The housing is provided with an air inlet, the first bracket is disposed on the housing, and the air inlet is opened or closed by the flap assembly. Since the aforementioned flap assembly has the aforementioned beneficial effects, a range hood including the aforementioned flap assembly also has the aforementioned beneficial effects, which will not be further detailed here.

[0018] The Summary of the Utility Model introduces a series of simplified concepts, which will be further described in detail in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0019] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0021] Figure 1 A perspective view of a range hood according to an exemplary embodiment of the present invention;

[0022] Figure 2 for Figure 1 A perspective view of the rotary connection assembly in the range hood shown;

[0023] Figure 3 for Figure 2 Exploded view of the rotating connection component in;

[0024] Figure 4 for Figure 2 A three-dimensional view of a rotating shaft in a rotating connection assembly;

[0025] Figure 5 for Figure 2 A perspective view of a damping member in a rotary connection assembly;

[0026] Figure 6 for Figure 2 A perspective view of the second bracket in the rotating connection assembly;

[0027] Figure 7 for Figure 2 A three-dimensional view of the first bracket in the rotating connection assembly.

[0028] The above drawings include the following reference numerals:

[0029] 1. Range hood; 10. Flap assembly; 110. Rotating connection assembly; 111. First bracket; 1111. Circular through-hole; 1112. Bracket body; 1113. First bending portion; 1113a. Second mounting hole; 1114. Second bending portion; 1114a. Third mounting hole; 112. Second bracket; 1121. First matching hole; 1121a. First straight hole wall; 1121b. Second straight hole wall; 1121c. First arc-shaped hole wall; 1122. First mounting hole; 113. Rotating shaft; 1131. Head; 1132. Connecting section; 1132a. Flattened portion; 11 32b, arc section; 1132c, straight section; 114, locking member; 115, damping member; 1151, second matching hole; 1151a, third straight hole wall; 1151b, fourth straight hole wall; 1151c, second arc-shaped hole wall; 116, elastic member; 1171, first bowl-shaped gasket; 1171a, first small end; 1171b, first large end; 1172, second bowl-shaped gasket; 1172a, second small end; 1172b, second large end; 118, partition plate; 119, gasket; 120, flap; 130, motor assembly; 20, housing; 210, air inlet. DETAILED DESCRIPTION

[0030] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0031] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0032] An embodiment of the present invention provides a rotating connection assembly. The rotating connection assembly provided by the present invention can be mounted on a flap assembly, which can be used in a range hood. The following describes a rotating connection assembly according to an embodiment of the present invention in detail with reference to the accompanying drawings.

[0033] See also Figures 1 to 7 The rotating connection assembly 110 may include a first bracket 111, a second bracket 112, a rotating shaft 113 and a locking member 114. The rotating shaft 113 may have a head 1131 and a connecting section 1132. The connecting section 1132 may pass through the first bracket 111 and the second bracket 112 in sequence. The locking member 114 may be connected to an end of the connecting section 1132 away from the head 1131. The connecting section 1132 may be rotatably connected to the first bracket 111. The second bracket 112 may be fixedly connected to the connecting section 1132 so as to be rotatable relative to the first bracket 111. A damping member 115 may be provided on the connecting section 1132. The damping member 115 may provide rotational damping in the opposite direction of rotation during the rotation of the second bracket 112 relative to the first bracket 111.

[0034] The rotating connection assembly 110 of the present invention, based on the setting of the damping member 115, can provide rotational damping, slow down the rotation speed of the second bracket 112, thereby providing a smooth rotation effect and reducing vibration, effectively improving the stability of the rotation, ensuring that the second bracket 112 can rotate smoothly, and avoiding the problem of abnormal noise during rotation.

[0035] In some embodiments, the damping member 115 can be made of manganese steel. Manganese steel has the characteristics of high hardness and wear resistance, and has a long service life. At the same time, the damping member 115 made of manganese steel has a rough surface and texture. During the rotation of the second bracket 112 relative to the first bracket 111, it can effectively provide rotational damping and effectively reduce the vibration generated by the second bracket 112 during the rotation. Of course, the damping member 115 can also be made of other materials. It should be understood that the damping member 115 can also be made of other materials, as long as it can provide rotational damping during the rotation of the shaft 113.

[0036] In some embodiments, the locking member 114 can be threadedly connected with the rotating shaft 113. The rotating shaft 113 can be a bolt, and the connecting segment 1132 can be provided with external threads. The locking member 114 can be a nut provided with internal threads on the inner side. In this way, the connection between the locking member 114 and the rotating shaft 113 is ensured to be firm, effectively avoiding the problem of loosening of the connection between the locking member 114 and the rotating shaft 113 during rotation, and the parts on the rotating shaft 113 can be axially limited at the end, ensuring the relative position between the parts to be fixed, and facilitating the disassembly and assembly of the locking member 114, thereby facilitating the disassembly and assembly of the parts. Of course, the locking member 114 can also be of other structures or connected with the rotating shaft 113 in other ways.

[0037] With reference to Figure 2 and Figure 3 , the damping member 115 can be provided on the side of the first support 111 away from the second support 112. In this way, during the rotation of the second support 112 relative to the first support 111, the damping member 115 can effectively provide rotation damping, ensuring the stability during rotation.

[0038] Again with reference to Figure 2 and Figure 3 , the damping member 115 and the head 1131 can be provided with an elastic member 116. The elastic member 116 is configured to generate axial damping parallel to the axial direction of the connecting segment 1132 when subjected to external force. In this way, the elastic member 116 can press the rotating shaft 113 in the axial direction, effectively improving the stability of rotation, ensuring smooth rotation of the second support 112, and avoiding the problem of abnormal sound during rotation. Specifically, the elastic member 116 can be a wave-shaped washer. The wave-shaped washer can effectively generate a reaction force when subjected to external force, thereby pressing the rotating shaft 113, and thereby effectively generating axial damping parallel to the axial direction of the connecting segment 1132. Of course, the elastic member 116 can also be a spring or other types of structures that can provide axial damping.

[0039] Again with reference to Figure 2 and Figure 3The first bowl-shaped washer 1171 can be sleeved on the connecting section 1132. The first bowl-shaped washer 1171 can be arranged between the head 1131 and the elastic member 116. In this way, the first bowl-shaped washer 1171 can provide good buffering effect during assembly, and can reduce impact and vibration during rotation of the second support 112 relative to the first support 111, thereby ensuring stability during rotation and having a certain anti-loosening effect. The first bowl-shaped washer 1171 can have a first small head end 1171a and a first large head end 1171b. Specifically, the first small head end 1171a can be arranged on the side of the first bowl-shaped washer 1171 close to the head 1131. Understandably, the contact area of the first small head end 1171a with the head 1131 is smaller than the contact area of the first large head end 1171b with the head 1131, so that arranging the first small head end 1171a on the side of the first bowl-shaped washer 1171 close to the head 1131 can make the friction between the first bowl-shaped washer 1171 and the head 1131 smaller, and the rotating shaft 113 can rotate more easily.

[0040] Again in combination with reference to Figure 2 and Figure 3 , the elastic member 116 can be sleeved on the connecting section 1132. In this way, the elastic member 116 is convenient to install, and the problem of falling off of the elastic member 116 during rotation is avoided.

[0041] In combination with reference to Figure 3 , Figure 4 and Figure 7 , the connecting section 1132 can have a milled flat portion 1132a. The cross section of the connecting section 1132 can form two opposite arc-shaped sections 1132b and two opposite flat sections 1132c through the milled flat portion 1132a. The first support 111 can be provided with a circular through hole 1111. The radius of the circular through hole 1111 (i.e., R2 in Figure 7 ) can be greater than the radius of the arc-shaped section 1132b (i.e., R1 in Figure 4 ). In this way, the rotating shaft 113 can effectively rotate relative to the first support 111.

[0042] In combination with reference to Figure 2 , Figure 3 , Figure 4 and Figure 6The connecting section 1132 may have a flattened portion 1132a. The cross section of the connecting section 1132 may be formed into two opposing arcuate sections 1132b and two opposing straight sections 1132c by the flattened portion 1132a. The second bracket 112 may be provided with a first mating hole 1121. The first mating hole 1121 may have a first straight hole wall 1121a, a second straight hole wall 1121b, and two first curved hole walls 1121c. The two straight sections 1132c may respectively mate with the first straight hole wall 1121a and the second straight hole wall 1121b. The curved section 1132b may mate with the first curved hole wall 1121c. In this way, the second bracket 112 is effectively ensured to remain stationary relative to the connecting section 1132 during the rotation process, allowing the torque on the second bracket 112 to be effectively transmitted to the connecting section 1132. Furthermore, by the two straight sections 1132c respectively abutting against the first straight hole wall 1121a and the second straight hole wall 1121b, and the curved section 1132b abutting against the first curved hole wall 1121c, stability during the rotation process is effectively ensured, and positioning and installation of the second bracket 112 are facilitated. It is understandable that the second bracket 112 can only be mounted on the connecting section 1132 when the two straight sections 1132c respectively abut against the first straight hole wall 1121a and the second straight hole wall 1121b, and the curved section 1132b abuts against the first curved hole wall 1121c.

[0043] See also Figures 2 to 5 The connecting section 1132 may have a flattened portion 1132a. The cross section of the connecting section 1132 may be formed into two opposing arcuate sections 1132b and two opposing straight sections 1132c by the flattened portion 1132a. The damping member 115 may be provided with a second mating hole 1151. The second mating hole 1151 may have a third straight hole wall 1151a, a fourth straight hole wall 1151b, and two second curved hole walls 1151c. The two straight sections 1132c may respectively mate with the third straight hole wall 1151a and the fourth straight hole wall 1151b. The curved section 1132b may mate with the second curved hole wall 1151c. This effectively ensures that the damping member 115 remains stationary relative to the connecting section 1132 during rotation, while simultaneously rotating relative to the first bracket 111, allowing the damping member 115 to effectively provide rotational damping. Furthermore, by having the two straight sections 1132c respectively abutting the third and fourth straight hole walls 1151a and 1151b, and the curved section 1132b abutting the second curved hole wall 1151c, stability during rotation is effectively ensured, and positioning and installation of the damping member 115 are facilitated. It is understood that the damping member 115 can only be positioned on the connecting section 1132 when the two straight sections 1132c respectively abut the third and fourth straight hole walls 1151a and 1151b, and the curved section 1132b abuts the second curved hole wall 1151c.

[0044] Understandably, during the rotation process, the first bracket 111 is fixed, and the second bracket 112 rotates relative to the first bracket 111, thereby driving the connecting section 1132 to rotate relative to the first bracket 111, and further driving the damping member 115 to rotate relative to the first bracket 111, so that the damping member 115 can effectively provide rotational damping, thereby improving stability during the rotation process.

[0045] See also Figure 2 and Figure 3 , a baffle 118 can be sleeved on the connecting section 1132. The first bracket 111 and the second bracket 112 can be separated by the baffle 118. In this way, when there is a certain pressure between the second bracket 112 and the first bracket 111, the problem of long-term relative rotation between the second bracket 112 and the first bracket 111, which causes mutual wear and deformation and affects the stability during the rotation process, is avoided. Specifically, the baffle 118 can be a flat washer. The flat washer can effectively reduce the mutual wear between the first bracket 111 and the second bracket 112, and the flat washer has a simple structure and is easy to install. Of course, the baffle 118 can also be other types of structures that can provide axial damping.

[0046] See also Figure 2 and Figure 3 , a second bowl-shaped gasket 1172 can be sleeved on the connecting section 1132. The second bowl-shaped gasket 1172 can be arranged between the locking piece 114 and the second bracket 112. In this way, the second bowl-shaped gasket 1172 can provide a good buffering effect during assembly, and can also reduce impact and vibration during the rotation of the second bracket 112 relative to the first bracket 111, thereby ensuring stability during the rotation process and having a certain anti-loosening effect. The second bowl-shaped gasket 1172 can have a second small head end 1172a and a second large head end 1172b. Specifically, the second small head end 1172a can be arranged on the side of the second bowl-shaped gasket 1172 close to the locking piece 114. It can be understood that the contact area between the second small end 1172a and the locking member 114 is smaller than the contact area between the second large end 1172b and the locking member 114. Therefore, setting the second small end 1172a on the side of the second bowl-shaped gasket 1172 close to the locking member 114 can make the friction between the second bowl-shaped gasket 1172 and the locking member 114 smaller, making it easier for the rotating shaft 113 to rotate.

[0047] In some embodiments, a washer 119 may be sleeved on the connecting section 1132. The washer 119 may be disposed between the second bowl-shaped washer 1172 and the second bracket 112. In this way, the stability during the rotation process may be further improved.

[0048] The relative positions of the various parts in the rotating connecting assembly 110 are explained here: the connecting section 1132 is provided with a first bowl-shaped gasket 1171, an elastic member 116, a damping member 115, a first bracket 111, a partition plate 118, a second bracket 112, a washer 119, a second bowl-shaped gasket 1172, and a locking member 114 in sequence from the end close to the head 1131 to the end away from the head 1131.

[0049] According to another aspect of the present invention, a flap assembly 10 is provided, comprising a flap 120 and the aforementioned rotational connection assembly 110. The flap 120 can be fixedly connected to a second bracket 112. Since the aforementioned rotational connection assembly 110 has the aforementioned beneficial effects, the flap assembly 10 including the aforementioned rotational connection assembly 110 also has the aforementioned beneficial effects, which will not be further elaborated herein.

[0050] In some implementations, such as Figure 2 、 Figure 3 and Figure 6 , the second bracket 112 may have a first mounting hole 1122. A connecting portion (not shown in the figure) may be provided on the flap 120. A first mating mounting hole that matches the first mounting hole 1122 may be provided on the connecting portion. The flap 120 and the second bracket 112 may be fixedly connected by inserting fasteners through the first mounting hole 1122 and the first mating mounting hole. In this way, the structure is simple and the second bracket 112 is easy to assemble and disassemble. Specifically, the fasteners may be screws, bolts, etc. Of course, the second bracket 112 may also be fixedly connected to the flap 120 in other ways.

[0051] According to another aspect of the present invention, a range hood 1 is provided, comprising a housing 20 and the flap assembly 10 described above. The housing 20 may be provided with an air inlet 210. A first bracket 111 may be provided on the housing 20. The air inlet 210 can be opened or closed by the flap assembly 10. Since the flap assembly 10 described above has the aforementioned beneficial effects, the range hood 1 including the flap assembly 10 also has the aforementioned beneficial effects, which will not be further elaborated herein.

[0052] In some embodiments, as Figure 2 、 Figure 3 and Figure 7The first bracket 111 may include a bracket body 1112 and a first bent portion 1113 and a second bent portion 1114 formed on the edge of the bracket body 1112 and extending away from the bracket body 1112. It is understandable that the first bent portion 1113 and the second bent portion 1114 may be located on the same side of the bracket body 1112. A circular through-hole 1111 may be provided on the bracket body 1112. The first bent portion 1113 may be provided on an end of the bracket body 1112 away from the circular through-hole 1111. The second bent portion 1114 may be provided between the circular through-hole 1111 and the first bent portion 1113. A second mounting hole 1113a may be provided on the first bent portion 1113. A third mounting hole 1114a may be provided on the second bent portion 1114. The housing 20 may be provided with a second mating mounting hole (not shown) and a third mating mounting hole (not shown) that mate with the second mounting hole 1113a and the third mounting hole 1114a. The first bracket 111 may be set on the housing 20 by inserting fasteners into the second mounting hole 1113a and the second mating mounting hole, and into the third mounting hole 1114a and the third mating mounting hole. In this way, the first bracket 111 is installed via the first bent portion 1113 and the second bent portion 1114, effectively ensuring the firmness of the connection between the first bracket 111 and the housing 20, avoiding the problem of the first bracket 111 falling off, and having a simple structure, making it easy to disassemble and assemble the first bracket 111. Specifically, the fasteners may be screws, bolts, etc. Of course, the first bracket 111 may also be set on the housing 20 in other ways.

[0053] Furthermore, the range hood 1 may further include a motor assembly 130. The motor assembly 130 may be used to realize the rotation of the flap 120 relative to the housing 20, thereby improving the user experience. Figure 1 In the XX direction (in the XX direction), the two rotating connection assemblies 110 can be arranged on either side of the flap 120. The motor assembly 130 can be arranged in the middle of the flap 120. This effectively ensures the stability of the flap 120's rotation relative to the housing 20, ensures the stability of the flap 120 during rotation, and avoids the problem of abnormal noise during rotation.

[0054] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0055] For ease of description, area-relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that area-relative terms include not only the orientation of the components as described in the figures, but also different orientations in use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0058] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary connection assembly comprising a first bracket, a second bracket, a rotating shaft, and a locking member, wherein the rotating shaft has a head and a connecting section, the connecting section sequentially passing through the first bracket and the second bracket, and the locking member is connected to an end of the connecting section away from the head, characterized in that: The connecting section is rotatably connected to the first bracket, and the second bracket is fixedly connected to the connecting section so as to be rotatable relative to the first bracket. A damping member is provided on the connecting section, and the damping member provides rotational damping in the opposite direction of rotation during the rotation of the second bracket relative to the first bracket.

2. The rotary connection assembly according to claim 1, characterized in that: The damping member is disposed on a side of the first bracket away from the second bracket.

3. The rotary connection assembly according to claim 2, characterized in that: An elastic member is provided between the damping member and the head portion, and the elastic member is configured to generate axial damping parallel to the axial direction of the connecting section when subjected to an external force.

4. The rotary connection assembly according to claim 3, characterized in that: A first bowl-shaped gasket is sleeved on the connecting section, and the first bowl-shaped gasket is arranged between the head and the elastic member.

5. The rotary connection assembly according to claim 3, characterized in that: The elastic member is sleeved on the connecting section.

6. The rotary connection assembly according to claim 1, characterized in that: The connecting section has a milled flat portion, and the cross section of the connecting section is formed into two opposite arc sections and two opposite straight sections through the milled flat portion; the first bracket is provided with a circular through hole, and the radius of the circular through hole is larger than the radius of the arc section.

7. The rotary connection assembly according to claim 1, wherein: The connecting section has a milled flat portion, and the cross-section of the connecting section is formed by the milled flat portion into two opposite arc sections and two opposite straight sections; the second bracket is provided with a first matching hole, the first matching hole has a first straight hole wall, a second straight hole wall and two first arc-shaped hole walls, the two straight sections are respectively fitted with the first straight hole wall and the second straight hole wall, and the arc section is fitted with the first arc-shaped hole wall.

8. The rotary connection assembly according to claim 1, wherein: The connecting section has a milled flat portion, and the cross-section of the connecting section is formed into two opposite arc sections and two opposite straight sections through the milled flat portion; the damping member is provided with a second matching hole, and the second matching hole has a third straight hole wall, a fourth straight hole wall and two second arc-shaped hole walls, the two straight sections are respectively fitted with the third straight hole wall and the fourth straight hole wall, and the arc section is fitted with the second arc-shaped hole wall.

9. The rotary connection assembly according to claim 1, wherein: The connecting section is sleeved with a blocking piece, and the first bracket and the second bracket are separated by the blocking piece.

10. The rotary connection assembly according to claim 1, wherein: A second bowl-shaped gasket is sleeved on the connecting section, and the second bowl-shaped gasket is arranged between the locking member and the second bracket.

11. A flap assembly, characterized in that: It comprises a flap and a rotating connection assembly as described in any one of claims 1 to 10, wherein the flap is fixedly connected to the second bracket.

12. A range hood, characterized in that: It comprises a shell and the flap assembly as claimed in claim 11, the shell is provided with an air inlet, the first bracket is provided on the shell, and the air inlet is opened or closed by the flap.

Images