Connecting structure and range hood

Abstract

The utility model discloses a connecting structure and a range hood, belongs to the technical field of kitchen appliances, and is designed for solving the problems of high difficulty and the like of a split component. The connecting structure comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is cylindrical; the second connecting piece is cylindrical, the second connecting piece and the first connecting piece are installed in a nested mode, and the first connecting piece and the second connecting piece are each provided with a guide assembly; and the buckle assembly comprises a first clamping hook and a second clamping hook, one of the first clamping hook and the second clamping hook is arranged on the first connecting piece, the other of the first clamping hook and the second clamping hook is arranged on the second connecting piece, and the buckle assembly is used for connecting the first connecting piece to the second connecting piece. According to the connecting structure and the range hood disclosed by the utility model, the first connecting piece and the second connecting piece can be quickly mounted, the problem that the side close to the wall is not easy to mount through screws is solved, the processing cost is reduced, and the whole structure formed by assembling the first connecting piece and the second connecting piece is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a connection structure and a range hood. Background Art

[0002] A range hood is a household appliance that uses negative pressure to collect indoor cooking fumes. The collected cooking fumes are discharged outdoors or re-entered indoors after being filtered to purify the indoor air. The range hood mainly includes a smoke collecting cavity, a connecting pipe, a machine case and a fan. The smoke collecting cavity, the connecting pipe and the machine case are connected in sequence, and the fan is arranged in the machine case. After the fan is started, negative pressure can be formed in the smoke collecting cavity, the connecting pipe and the machine case.

[0003] Most of the existing range hoods are split structures, that is, the smoke collecting cavity, the connecting pipe and the machine case are all independent structures. When in use, the smoke collecting cavity, the connecting pipe and the machine case need to be connected together in sequence. In order to save indoor space, the smoke collecting cavity and the machine case are usually installed close to the indoor wall. Then one side of the connecting pipe will be attached to the indoor wall. Blocked by the wall, neither the side close to the wall at the connection between the connecting pipe and the smoke collecting cavity nor the side close to the wall at the connection between the connecting pipe and the machine case can be fixedly connected by connecting pieces such as screws, and the connection structure has poor stability.

[0004] If the structures such as the smoke collecting cavity, the connecting pipe, the machine case and the fan are assembled into one body in advance and then the whole structure is hung on the indoor wall, the volume of the whole machine structure is large, the installation is inconvenient, and the labor intensity is high. Content of the Utility Model

[0005] The purpose of the utility model is to provide a connection structure and a range hood, which solve the problem of great difficulty in split components and have a better use experience.

[0006] To achieve this purpose, on the one hand, the utility model adopts the following technical solutions:

[0007] A connection structure includes: a first connecting piece, which is cylindrical; a second connecting piece, which is cylindrical and is nested with the first connecting piece, and guiding components are respectively arranged on the first connecting piece and the second connecting piece; and a buckle component, which includes a first hook and a second hook. One of the first hook and the second hook is arranged on the first connecting piece, and the other of the first hook and the second hook is arranged on the second connecting piece. The buckle component is used to connect the first connecting piece to the second connecting piece.

[0008] In one preferred embodiment, the first hook includes a first hook mating surface and a first hook mounting inclined surface, the second hook includes a second hook mating surface and a second hook mounting inclined surface. The first hook mounting inclined surface can slide over the second hook mounting inclined surface, and the first hook mating surface can abut against the second hook mating surface to realize the connection between the first connecting piece and the second connecting piece.

[0009] In one preferred embodiment, the buckle assembly further includes an unlocking member, which can release the abutting state of the first hook and the second hook.

[0010] In one preferred embodiment, a rack is provided on the unlocking member. One of the first hook and the second hook includes a gear and a rotating shaft. The gear and the rotating shaft can rotate synchronously around the axis of the rotating shaft. The rack meshes with the gear. When the unlocking member moves, it can drive the gear to rotate around the axis of the rotating shaft, so as to release the abutting state of the first hook and the second hook.

[0011] In one preferred embodiment, the buckle assembly further includes a reset torsion spring. A torsion spring mounting groove is formed on the gear. One end of the reset torsion spring is connected to the torsion spring mounting groove, and the rotating shaft is arranged in the reset torsion spring.

[0012] In one preferred embodiment, the buckle assembly further includes an unlocking and reset elastic member. An unlocking and reset mounting hole is provided on the unlocking member, and one end of the unlocking and reset elastic member is inserted into the unlocking and reset mounting hole.

[0013] In one preferred embodiment, a limiting rib is provided on the outer wall surface of one of the first connecting member and the second connecting member, and the rack can move along the extending direction of the limiting rib.

[0014] In one preferred embodiment, the guiding assembly includes a matching limiting boss and a limiting groove. One of the limiting boss and the limiting groove is located on the first connecting member, and the other of the limiting boss and the limiting groove is located on the second connecting member.

[0015] On the other hand, the present invention adopts the following technical solutions:

[0016] A range hood, including a fan housing, a smoke collecting cavity, and a connecting pipe connected between the fan housing and the smoke collecting cavity. The range hood further includes the above-mentioned connecting structure. The first connecting member is connected to one of the fan housing and the connecting pipe, and the second connecting member is connected to the other of the fan housing and the connecting pipe; and / or, the first connecting member is connected to one of the smoke collecting cavity and the connecting pipe, and the second connecting member is connected to the other of the smoke collecting cavity and the connecting pipe.

[0017] In one preferred embodiment, among the first connecting member and the second connecting member, the one located above is inserted into the other one located below.

[0018] The connecting structure disclosed by the present invention includes a first connecting member, a second connecting member, and a buckle assembly. The buckle assembly is used to connect the first connecting member to the second connecting member, and can realize the quick installation of the first connecting member and the second connecting member. It not only solves the problem that it is not easy to install by screws on the wall side, but also reduces the processing cost, and the overall structure after the assembly of the first connecting member and the second connecting member is more firm.

[0019] The range hood disclosed by the present utility model further includes the above-mentioned connection structure, which can realize the quick installation among the split smoke collecting cavity, the connecting pipe and the fan chassis, and reduce the installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the range hood provided by the specific embodiment of the present utility model;

[0021] Figure 2 is a schematic combined structural view of the connection structure provided by the specific embodiment of the present utility model;

[0022] Figure 3 is a semi-sectional view of the combined structure of the connection structure provided by the specific embodiment of the present utility model;

[0023] Figure 4 is a front view of the combined structure of the connection structure provided by the specific embodiment of the present utility model;

[0024] Figure 5 is a schematic combined structural view of the first connecting piece and the limiting convex rib provided by the specific embodiment of the present utility model;

[0025] Figure 6 is a partial structural view of the first connecting piece and the limiting convex rib provided by the specific embodiment of the present utility model;

[0026] Figure 7 is a schematic structural view of the unlocking piece provided by the specific embodiment of the present utility model;

[0027] Figure 8 is a schematic combined structural view of the first hook, the gear and the rotating shaft provided by the specific embodiment of the present utility model;

[0028] Figure 9 is a schematic combined structural view of the second connecting piece and the second hook provided by the specific embodiment of the present utility model;

[0029] Figure 10 is a schematic view of the installation state of the connection structure provided by the specific embodiment of the present utility model;

[0030] Figure 11 is Figure 10 a partial enlarged view at A in;

[0031] Figure 12 is a schematic view of the installation state of the connection structure after the first hook installation inclined plane slides down along the second hook installation inclined plane to the bottommost end provided by the specific embodiment of the present utility model;

[0032] Figure 13It is a schematic diagram of the installation state of the connection structure when the first hook mating surface abuts against the second hook mating surface provided by the specific embodiment of the present utility model.

[0033] In the figure:

[0034] 1. First connecting member; 2. Second connecting member; 4. Limit convex rib; 5. Fan chassis; 6. Smoke collecting chamber; 7. Connecting pipe; 11. Limit convex platform; 12. Extension section; 13. Hook mounting hole; 14. Unlock reset mounting seat; 21. Limit groove; 31. First hook; 32. Second hook; 33. Unlock member; 34. Gear; 35. Rotating shaft; 36. Reset torsion spring; 37. Unlock reset elastic member; 41. Limit slot; 311. First hook mating surface; 312. First hook mounting inclined surface; 321. Second hook mating surface; 322. Second hook mounting inclined surface; 331. Rack; 332. Unlock reset mounting hole; 333. Handle base; 334. Handle; 341. Torsion spring mounting groove. Specific embodiment

[0035] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0041] This embodiment discloses a connection structure and a range hood including the connection structure. As Figure 1 shown, the range hood further includes a blower housing 5, a smoke collecting cavity 6, and a connecting pipe 7 connected between the blower housing 5 and the smoke collecting cavity 6. The smoke collecting cavity 6, the connecting pipe 7 and the interior of the blower housing 5 are sequentially communicated to form a pipeline for the oil fume airflow to pass through. The blower housing 5 is arranged in the ceiling, and a blower for generating negative pressure is arranged in the blower housing 5; the smoke collecting cavity 6 is arranged at a position close to the cooking range for collecting the oil fume generated by cooking nearby; the connecting pipe 7 is a flexible hose, which can change its shape according to the surrounding environment and can be installed in a relatively complex and narrow space, with a wide application range.

[0042] As Figures 2 to 4As shown, the connection structure includes a first connecting member 1 in the shape of a cylinder, a second connecting member 2 in the shape of a cylinder, and a snap component. The first connecting member 1 and the second connecting member 2 are nested and installed. Guide components are respectively arranged on the first connecting member 1 and the second connecting member 2, and the guide components can quickly align the first connecting member 1 and the second connecting member 2, improving the installation efficiency.

[0043] The first connecting member 1 is connected to the end of one of the blower housing 5 and the connecting pipe 7, and the second connecting member 2 is connected to the end of the other of the blower housing 5 and the connecting pipe 7; and / or, the first connecting member 1 is connected to the end of one of the smoke collecting chamber 6 and the connecting pipe 7, and the second connecting member 2 is connected to the end of the other of the smoke collecting chamber 6 and the connecting pipe 7. That is, the connecting structure is connected to at least one end of the connecting pipe 7, making the installation more convenient.

[0044] Among the first connecting member 1 and the second connecting member 2, the one located above is inserted into the other one located below, and the oil droplets condensed from the oil fume airflow will flow down along the inner walls of the first connecting member 1 and the second connecting member 2 from top to bottom, and will not seep out from the gap between the first connecting member 1 and the second connecting member 2.

[0045] The snap component includes a first hook 31 and a second hook 32. One of the first hook 31 and the second hook 32 is arranged on the first connecting member 1, and the other of the first hook 31 and the second hook 32 is arranged on the second connecting member 2. The snap component is used to connect the first connecting member 1 to the second connecting member 2, realizing the quick installation between the split smoke collecting chamber 6, the connecting pipe 7 and the blower housing 5, and reducing the installation difficulty.

[0046] Multiple groups of snap components can be arranged around the first connecting member 1 and the second connecting member 2, making disassembly and assembly more convenient; or only snap components can be arranged on the side of the first connecting member 1 and the second connecting member 2 against the wall, and on other sides, the first connecting member 1 and the second connecting member 2 are connected together by connecting pieces such as screws. This not only solves the problem that it is not easy to install by screws on the side against the wall, but also reduces the processing cost, and the overall structure after the first connecting member 1 and the second connecting member 2 are assembled is more firm.

[0047] The specific connection method between the connection structure and the smoke collecting chamber 6, the connecting pipe 7, and the blower housing 5 is not limited, and any method that can stably connect two structures in the prior art can be used. In this embodiment, as Figure 5As shown, an extension section 12 is formed at the edge of the first connecting member 1. The extension section 12 can be connected to the smoke collecting chamber 6, the connecting pipe 7 or the fan chassis 5 by means of screw connection or adhesion, etc. The connection structure is more stable and has strong anti-vibration ability. When the high-speed oil fume airflow passes through, the connection structure will not be separated from the smoke collecting chamber 6, the connecting pipe 7 and the fan chassis 5, and it is safer to use. The first connecting member 1 and the second connecting member 2 can be connected to the smoke collecting chamber 6, the connecting pipe 7 and the fan chassis 5 by means of snap connection, bonding, etc., and the installation efficiency is high.

[0048] On the basis of the above structure, as Figures 2 to 7 shown, the buckle assembly further includes an unlocking member 33, and the unlocking member 33 can make the first hook 31 and the second hook 32 release the abutting state. Specifically, the unlocking member 33 is in a long strip shape, and a handle base 333 and a handle 334 are provided at one end thereof. Pulling the handle 334 can make the unlocking member 33 move, so as to realize the first hook 31 moving away from the second hook 32 to release the abutting state. In order to prevent the unlocking member 33 from moving radially or detaching from the first connecting member 1, in this embodiment, a push rod fixing hole (not shown) is provided on the first connecting member 1, and the unlocking member 33 is connected to the push rod fixing hole through a guiding column and other structures, which not only does not affect the movement of the unlocking member 33 along its own extending direction, but also can prevent the unlocking member 33 from moving radially or detaching from the first connecting member 1, and it is safer to use.

[0049] As Figure 7 and Figure 8 shown, a rack 331 is provided on the unlocking member 33, and one of the first hook 31 and the second hook 32 includes a gear 34 and a rotating shaft 35. The gear 34 and the rotating shaft 35 can rotate synchronously around the axis of the rotating shaft 35. The rack 331 meshes with the gear 34. When the unlocking member 33 moves, it can drive the gear 34 to rotate around the axis of the rotating shaft 35, so as to make the first hook 31 and the second hook 32 release the abutting state. In this embodiment, the gear 34 and the rotating shaft 35 are connected to the first hook 31; the gear 34 and the rotating shaft 35 can be an integral structure or two independent structures connected fixedly, as long as the gear 34 and the rotating shaft 35 can rotate synchronously.

[0050] When pulling the handle 334 to make the unlocking member 33 move along its own extending direction, the rack 331 can drive the gear 34 to rotate around the axis of the rotating shaft 35. After the first hook 31 rotates a certain angle with the gear 34 and disengages from the second hook 32, the first connecting member 1 and the second connecting member 2 can be separated, realizing the quick disassembly between the smoke collecting chamber 6, the connecting pipe 7 and the fan chassis 5.

[0051] As Figure 3 , Figure 6 and Figure 8As shown, the buckle assembly further includes a return torsion spring 36. A torsion spring mounting groove 341 is formed on the gear 34, and a hook mounting hole 13 is provided on the first connecting member 1. The end of the rotating shaft 35 is inserted into the hook mounting hole 13. The rotating shaft 35 is inserted into the return torsion spring 36. One end of the return torsion spring 36 is connected to the torsion spring mounting groove 341, and the other end of the return torsion spring 36 is connected to the hook mounting hole 13.

[0052] When a tangential thrust is applied to the gear 34 and the gear 34 rotates around the axis of the rotating shaft 35, the return torsion spring 36 will be deformed to a certain extent and accumulate elastic force. When the force exerted by the return torsion spring 36 on the gear 34 is greater than the thrust, the return torsion spring 36 drives the gear 34 to rotate in the opposite direction until the gear 34 is reset.

[0053] Based on the above structure, the buckle assembly further includes an unlocking and resetting elastic member 37 (as Figure 4 shown). An unlocking and resetting mounting hole 332 is provided on the unlocking member 33, and an unlocking and resetting mounting seat 14 is provided on the first connecting member 1 (as Figure 5 shown). One end of the unlocking and resetting elastic member 37 is inserted into the unlocking and resetting mounting hole 332, and the other end of the unlocking and resetting elastic member 37 is connected to the unlocking and resetting mounting seat 14. When the handle 334 is pulled outwards, the unlocking and resetting elastic member 37 is stretched and deformed. The unlocking and resetting elastic member 37 will exert a reverse pulling force on the unlocking member 33 until the unlocking member 33 is reset.

[0054] To improve the mounting stability of the unlocking member 33, a limiting rib 4 is provided on the outer wall surface of one of the first connecting member 1 and the second connecting member 2. A limiting groove 41 is formed between the limiting rib 4 and the edge of the first connecting member 1. The unlocking member 33 is located in the limiting groove 41. When the unlocking member 33 moves along the limiting groove 41, the moving direction of the rack 331 is the same as the extending direction of the limiting rib 4, and the rack 331 will not move radially, ensuring that the rack 331 and the gear 34 always remain in a meshing state. In this embodiment, as Figure 5 shown, the limiting rib 4 is provided on the outer wall surface of the first connecting member 1.

[0055] Based on the above structure, as Figure 2 and Figure 4 shown, the guiding assembly includes a matching limiting boss 11 and a limiting groove 21. One of the limiting boss 11 and the limiting groove 21 is located on the outer side wall of the first connecting member 1, and the other of the limiting boss 11 and the limiting groove 21 is located on the outer side wall of the second connecting member 2. The extending directions of the limiting boss 11 and the limiting groove 21 are the same as the mounting direction of the first connecting member 1 and the second connecting member 2. During installation, after aligning the limiting boss 11 with the limiting groove 21 and pressing the first connecting member 1 or the second connecting member 2, the first connecting member 1 and the second connecting member 2 can be quickly sleeved together, improving the installation speed.

[0056] As Figure 8 and Figure 9 shown, the first hook 31 includes a first hook mating surface 311 and a first hook mounting inclined surface 312, and the second hook 32 includes a second hook mating surface 321 and a second hook mounting inclined surface 322. The first hook mounting inclined surface 312 can slide over the second hook mounting inclined surface 322, causing a certain degree of deformation of the first hook 31 to avoid jamming between the first hook 31 and the second hook 32. The first hook mating surface 311 can abut against the second hook mating surface 321 to prevent the first hook 31 and the second hook 32 from separating, thereby realizing the stable connection between the first connector 1 and the second connector 2.

[0057] Figure 10 and Figure 11 shown is that the first connector 1 is pressed downward relative to the second connector 2, the first hook mounting inclined surface 312 slides down along the second hook mounting inclined surface 322, and the first hook 31 rotates under the pushing of the second hook 32; Figure 12 shown is that after the first hook mounting inclined surface 312 slides down to the bottom end along the second hook mounting inclined surface 322, the first hook mounting inclined surface 312 separates from the second hook mounting inclined surface 322, and the first hook 31 no longer pushes the second hook 32; Figure 13 shown is that the first hook 31 rotates reversely under the action of the return torsion spring 36 (as Figure 3 shown), the first hook mating surface 311 abuts below the second hook mating surface 321, and the second hook mating surface 321 can prevent the first hook mating surface 311 from moving upward, realizing the buckling of the first hook 31 and the second hook 32.

[0058] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A connection structure, characterized in that: include: The first connecting member (1) is cylindrical; The second connecting member (2) is cylindrical and is nested with the first connecting member (1), and the first connecting member (1) and the second connecting member (2) are respectively provided with guide components; and A buckle assembly comprises a first hook (31) and a second hook (32), wherein one of the first hook (31) and the second hook (32) is arranged on the first connecting member (1), and the other of the first hook (31) and the second hook (32) is arranged on the second connecting member (2), and the buckle assembly is used to connect the first connecting member (1) to the second connecting member (2).

2. The connection structure according to claim 1, characterized in that: The first hook (31) comprises a first hook mating surface (311) and a first hook mounting inclined surface (312); the second hook (32) comprises a second hook mating surface (321) and a second hook mounting inclined surface (322); the first hook mounting inclined surface (312) can slide over the second hook mounting inclined surface (322); the first hook mating surface (311) can abut against the second hook mating surface (321) to achieve the connection between the first connecting member (1) and the second connecting member (2).

3. The connection structure according to claim 2, characterized in that: The buckle assembly further comprises an unlocking member (33), and the unlocking member (33) can release the first hook (31) and the second hook (32) from an abutting state.

4. The connection structure according to claim 3, characterized in that: The unlocking member (33) is provided with a rack (331); one of the first hook (31) and the second hook (32) comprises a gear (34) and a rotating shaft (35); the gear (34) and the rotating shaft (35) can rotate synchronously around the axis of the rotating shaft (35); the rack (331) is meshed with the gear (34); when the unlocking member (33) moves, it can drive the gear (34) to rotate around the axis of the rotating shaft (35), so that the first hook (31) and the second hook (32) are released from the abutting state.

5. The connection structure according to claim 4, characterized in that: The buckle assembly also includes a return torsion spring (36), a torsion spring installation groove (341) is formed on the gear (34), one end of the return torsion spring (36) is connected to the torsion spring installation groove (341), and the rotating shaft (35) is inserted into the return torsion spring (36).

6. The connection structure according to claim 4, characterized in that: The buckle assembly further comprises an unlocking and resetting elastic member (37), the unlocking member (33) is provided with an unlocking and resetting mounting hole (332), and one end of the unlocking and resetting elastic member (37) is inserted into the unlocking and resetting mounting hole (332).

7. The connection structure according to claim 4, characterized in that: A limiting ridge (4) is provided on the outer wall surface of one of the first connecting member (1) and the second connecting member (2), and the rack (331) can move along the extension direction of the limiting ridge (4).

8. The connection structure according to any one of claims 1 to 7, characterized in that: The guide assembly comprises a matching limiting boss (11) and a limiting groove (21), one of the limiting boss (11) and the limiting groove (21) is located on the first connecting member (1), and the other of the limiting boss (11) and the limiting groove (21) is located on the second connecting member (2).

9. A range hood, comprising a fan housing (5), a smoke collecting chamber (6), and a connecting pipe (7) connected between the fan housing (5) and the smoke collecting chamber (6), characterized in that: The range hood further comprises a connection structure as claimed in any one of claims 1 to 8, wherein a first connection member (1) is connected to one of the fan housing (5) and the connecting pipe (7), and a second connection member (2) is connected to the other of the fan housing (5) and the connecting pipe (7); and / or, the first connection member (1) is connected to one of the smoke collecting chamber (6) and the connecting pipe (7), and the second connection member (2) is connected to the other of the smoke collecting chamber (6) and the connecting pipe (7).

10. The range hood according to claim 9, characterized in that: Of the first connecting member (1) and the second connecting member (2), the one located at the top is inserted into the other one located at the bottom.

Images