CN215570735U

CN215570735U - Rack assembly and range hood

Info

Publication number: CN215570735U
Application number: CN202122230314.9U
Authority: CN
Inventors: 蔡茫; 王康; 孙玉良; 胡永; 杨敬豪
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-01-18
Anticipated expiration: 2031-09-15

Abstract

The application discloses frame assembly belongs to range hood technical field to solve and decorate the inconvenient technical problem of cover dismouting. This frame assembly includes the frame casing, decorate cover and connecting piece, wherein, the both ends of connecting piece are connected with the both sides that decorate the cover and extend to frame casing rear end face respectively, and the top face at the frame casing is fixed to the connecting piece, in order to realize decorating the fixed between cover and the frame casing, and simultaneously, because the top face at the frame casing is fixed to the connecting piece, consequently when the cover is decorated in the dismouting, be fixed or the split connecting piece realizes through the top face at the frame casing, because the top face of frame casing has bigger installation space, consequently whole dismouting process convenient and fast more.

Description

Rack assembly and range hood

Technical Field

The application belongs to the technical field of range hood, especially relates to a frame assembly and range hood.

Background

In the related art, the back surface of the decoration cover of the range hood is usually directly installed and fixed on the back surface of the frame through screws or rivets, but when the decoration cover is assembled in a production line, because the back surface of the frame and the back surface of the decoration cover are close to a production line plane, the installation space is limited, and therefore, when the decoration cover is assembled and disassembled, the screws are inconvenient to install or take out from the back surface of the frame.

Disclosure of Invention

The application aims at solving the technical problem that the existing decoration cover is inconvenient to disassemble and assemble at least to a certain extent. Therefore, the application provides a frame assembly and a range hood.

The rack assembly that this application embodiment provided includes:

a rack housing;

the decorative cover covers the front end face of the rack shell, and two sides of the decorative cover extend to the rear end face, opposite to the front end face, of the rack shell; and the number of the first and second groups,

and two ends of the connecting piece are respectively connected with two sides of the decorative cover on the rear end face and are fixed on the top end face of the frame shell.

Through setting up the connecting piece, and extend to the both sides of frame casing rear end face with the both ends of connecting piece and decorate the cover and be connected, and fix the connecting piece at the top face of frame casing, thereby will decorate cover and frame casing fixed connection, and, because the connecting piece is fixed at the top face of frame casing, consequently when the cover is decorated in the dismouting, realize through the fixed or split connecting piece at the top face of frame casing, because the top face of frame casing has bigger installation space, consequently whole dismouting process is convenient and fast more.

In some embodiments, both sides of the decorative cover on the rear end face are provided with connecting holes, both ends of the connecting piece are provided with connecting portions, and the two connecting portions are respectively inserted into the corresponding connecting holes to be fixed.

The connecting part is inserted into the connecting hole for fixing, so that the connecting part and the decorative cover can be quickly mounted or dismounted.

In some embodiments, the connecting portion is provided with a hook groove, and the hook groove is clamped with the decoration cover where the connecting hole is located.

Hook groove with decorate the cover joint back, can restrict the both sides removal of decorating the cover, further improve connecting portion and decorate the fixed connection effect of cover.

In some embodiments, two sides of the decoration cover on the rear end surface are flanges arranged on the decoration cover opposite to the rear end surface of the rack housing, and the connecting holes on two sides of the decoration cover are respectively located on two corresponding flanges.

Because the flange is positioned on the rear end surface of the frame shell, after the connecting part on the connecting piece is connected with the flange, the connecting part of the connecting piece and the decorative cover can not be seen from the front surface of the frame assembly, and the attractiveness of the whole frame assembly is improved.

In some embodiments, the connecting member includes a first mounting portion and a second mounting portion fixedly connected to the first mounting portion, two of the connecting portions are respectively disposed at two ends of the first mounting portion, the first mounting portion is fixed to the rear end face of the rack housing, and the second mounting portion is fixed to the top end face of the rack housing.

Because the top end face of the frame shell and the rear end face of the frame shell are not in the same plane, the first installation part and the second installation part are not in the same plane, and an included angle is formed between the first installation part and the second installation part, so that the bending strength of the connecting piece can be improved, and the bending of the connecting piece and the deformation of the decorative cover caused by the impact deformation of the connecting piece are reduced.

In some embodiments, the hook groove is located at a connection position of the connection part and the first installation part, and the first installation part is attached to the rib.

After the hook groove is connected with the flange at the connecting hole in a clamped mode, the first connecting portion can be attached to the flange, the flange provides supporting force for the first connecting portion, and the deformation degree of the connecting piece after impact is further reduced.

In some embodiments, the first mounting portion, the second mounting portion, and the connecting portion are integrally formed.

The first installation department, the second installation department and the connecting portion of integrated into one piece can reduce and connect required assembly process between first installation department, second installation department and the connecting portion, promote the reliability of whole connecting piece simultaneously.

In some embodiments, the second installation portion is provided with a through hole, a threaded hole corresponding to the through hole is formed in the top end face of the rack shell, and the second installation portion penetrates through the through hole through a screw and is fixedly connected with the top end face of the rack shell after being connected with the threaded hole.

Because the top end face of the rack shell has a larger installation space compared with the rear end face of the rack shell, the second installation part is fixed on the top end face of the rack shell from the top end of the rack shell by screws, the second installation part is prevented from being fixed on the rear end face of the rack shell, and the second installation part and the decoration cover connected with the second installation part can be fixed more conveniently.

In some embodiments, the rack housing includes a rack top plate located on a top end surface of the rack housing, and the threaded hole opens in the rack top plate.

The screw hole is seted up on the frame roof, and rethread screw is connected the second installation department with the frame roof and is fixed, can make second installation department and frame roof laminating, further improves the bending resistance of connecting piece.

The application also provides a range hood, including foretell frame assembly and being located the box subassembly of frame assembly below, the lower extreme of frame assembly with box subassembly fixed connection, the lower extreme of decorating the cover passes through the connecting piece compresses tightly and is fixed in on the box subassembly.

After being connected the connecting piece with the both sides of decorating the cover, it is fixed with the top face of connecting piece and frame casing again to at the in-process of fixed connection spare and frame casing, have decurrent downforce to the decoration cover, can compress tightly the lower extreme of decorating the cover on the box subassembly, reduce and decorate the rocking of cover lower extreme, make the fixed of decorating the cover more reliable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the decorative cover of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the structure of the connector;

fig. 5 is a schematic structural view of the range hood.

Reference numerals:

1000-a rack assembly; 1100-a rack housing; 1110-a rack back plate;

1200-a trim cover; 1210-a front cover plate; 1220-left shroud; 1230-right cover plate; 1240-a rib; 1241-connecting hole;

1300-a connector; 1310 — a first mounting portion; 1311-screw vias; 1320-a second mounting portion; 1330-a connecting portion; 1331-hook groove;

2000-case assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example one

The embodiment provides a frame assembly which is applied to a range hood and aims to solve the technical problem that an existing decoration cover is inconvenient to disassemble and assemble. The frame assembly of the present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

as shown in fig. 1, the rack assembly 1000 is applied to a range hood, and specifically, the rack assembly 1000 includes a rack housing 1100, a decoration cover 1200 and a connecting member 1300. The rack housing 1100 has a front end surface and a rear end surface opposite to the front end surface, a left end surface and a right end surface oppositely disposed between the front end surface and the rear end surface, and a top end surface located at the rack housing 1100. The decorating cover 1200 covers the front end surface of the rack housing 1100, and is used for shielding the rack housing 1100 of the range hood from the front surface, so as to achieve an aesthetic effect, where the front surface refers to the surface where the front end surface of the rack assembly 1000 is located. Both sides of the decorative cover 1200 extend to the rear end surface of the housing case 1100. Both sides of decorating cover 1200 and the both ends of connecting piece 1300 are connected fixedly to the both sides that will decorate cover 1200 are fixed, avoid decorating the both sides of cover 1200 and rock, make decorating cover 1200 lie in frame casing 1100 connect before relatively stable, later with connecting piece 1300 and frame casing 1100's top terminal surface fixed connection, thereby will decorate the both sides of cover 1200 and pass through connecting piece 1300 and frame casing 1100 fixed.

It can be understood that, since the fixed connection position of the connection piece 1300 and the rack casing 1100 is on the top end surface of the rack casing 1100, and the top end surface of the rack casing 1100 generally has a wider installation space compared with the back surface of the rack casing 1100, when the decoration cover 1200 is disassembled and assembled, the decoration cover 1200 can be fixed or separated from the rack casing 1100 only by fixing or separating the connection piece 1300 from the top end surface of the rack casing 1100, and the assembly or disassembly is more convenient.

In addition, when the range hood is assembled in a factory, the rear end face of the rack housing 1100 is usually placed on an assembly workbench, so that by adopting the structure of the rack assembly 1000 of the embodiment, the connecting piece 1300 is firstly connected with the two sides of the decorative cover 1200, then the decorative cover 1200 is covered on the rack housing 1100 from the front end face of the rack housing 1100, and then the connecting piece 1300 is fixedly connected with the top end face of the rack housing 1100, so that the decorative cover 1200 is installed and fixed, the problem that the assembly efficiency is influenced by the overturning of the rack housing 1100 is avoided, and the problem that the overturning of the rack housing 1100 may cause collision and scratches is also avoided.

Referring to fig. 3, the decoration cover 1200 includes a front cover plate 1210, a left cover plate 1220 and a right cover plate 1230, after the decoration cover 1200 is connected to the rack housing through the connection piece 1300, the front cover plate 1210 can shield the front end surface of the rack housing 1100, the right cover plate 1230 can shield the right end surface of the rack housing 1100, and the left cover plate 1220 can shield the left side surface of the rack housing. Therefore, the front end face, the left end face and the right end face of the rack casing 1100 in the front view angle can be completely shielded by the decoration cover 1200, and an attractive effect is achieved. The top view of the decoration cover 1200 from top to bottom may be a "U" shaped structure, or may be an arc structure with a preferred arc shape, which is not limited in this embodiment.

Preferably, decorate cover 1200 and frame casing 1100 and laminate, that is, decorate the front cover plate 1210 of cover 1200 and the laminating of the preceding terminal surface of frame casing 1100, left cover plate 1220 and the laminating of the left terminal surface of frame casing 1100, right cover plate 1230 and the laminating of the right terminal surface of frame casing 1100, thereby make decorate cover 1200 when receiving the striking, provide the holding power for decorating the cover by frame casing 1100, avoid decorating the cover and take place to warp, in addition, frame casing 1100 can play the guide effect to decorating cover 1200, when installing decorating cover 1200, can be with decorating cover 1200 from the top of frame casing 1100 slide into frame casing 1100, it is more convenient to install.

The decoration cover 1200 mainly plays a role in beauty, and the material of the decoration cover may be a thin steel plate, a thin aluminum plate, or an acrylic plate or a tempered glass plate, and the material of the decoration cover 1200 is not particularly limited in this embodiment. The front cover plate 1210, the left cover plate 1220 and the right cover plate 1230 are integrally formed, so that the overall strength of the decoration cover 1200 can be improved, and of course, in some embodiments, other fixing methods such as welding or riveting can be adopted between the front cover plate 1210 and the left cover plate 1220, and between the front cover plate 1210 and the right cover plate 1230.

As some embodiments, the top ends of the front cover plate 1210, the left cover plate 1220 and the right cover plate 1230 are located at the same horizontal plane, and the top end of the decoration cover 1200 is higher than the top end surface of the rack casing 1100, so that an installation space enough for installing or detaching the connection piece 1300 is formed between the decoration cover 1200 and the top end surface of the rack casing 1100, thereby preventing the connection piece 1300 and the rack casing 1100 from being influenced by other external environments, and at the same time, the part of the rack casing 1100 where the decoration cover 1200 is higher can also serve as a shield for an exhaust flue installed on the rack casing 1100. Of course, the top of the trim cover 1200 may also be selectively mounted to a top cover on top of the trim cover 1200 as desired, without affecting the connection of the connection piece 1300 to both sides of the trim cover 1200.

Referring to fig. 3, the connecting member 1300 is a substantially strip-shaped structural member, the two ends of the connecting member 1300 are provided with connecting portions 1330, the two sides of the decoration cover 1200 are provided with connecting holes 1241, and the connecting portions 1330 at the two ends of the connecting member 1300 are respectively inserted into the corresponding connecting holes 1241 and fixed with the connecting holes 1241, thereby fixing the relative positions of the two sides of the decoration cover 1200.

In some embodiments, the connection piece 1300 may also be fixedly connected to the decorative cover 1200 by a screw connection or a welding fixation, which does not affect the installation or removal of the connection piece 1300 to the top end surface of the rack housing 1100, but is more cumbersome when the connection piece 1300 and the decorative cover 1200 are removed.

The connecting portion 1330 is provided with a hook slot 1331, the width of the hook slot 1331 is greater than or equal to the hole wall thickness of the connecting hole 1241, and the hole wall thickness of the connecting hole 1241 is the thickness of both sides of the decorative cover 1200 because the connecting hole 1241 is arranged on both sides of the decorative cover 1200. After the connecting portion 1330 is inserted into the connecting hole 1241, the connecting portion 1330 can be further improved in stability of connection with the connecting hole 1241 by being clamped with the decoration cover 1200 through the hook slot 1331, and the connecting portion 1330 is prevented from being accidentally separated from the connecting hole 1241. Preferably, the width of the hook groove 1331 is equal to the hole wall thickness of the connection hole 1241, so that both side walls of the hook groove 1331 can abut the trim cover 1200 to prevent both sides of the trim cover 1200 from swinging in the hook groove 1331. Simultaneously, through the structure that sets up hook 1331, can enough reach the connecting piece 1300 and decorate the high-speed joint of cover 1200 both sides fixed, also can reach the effect of quick split.

In order to facilitate the clamping of the hook slot 1331 and the decoration cover 1200 where the connection hole 1241 is located, in this embodiment, the connection hole 1241 is set to be a waist-shaped hole, and the waist-shaped direction of the connection hole is a vertical direction, meanwhile, the opening of the hook slot 1331 can be opened upwards or downwards, so that in the clamping process of the hook slot 1331 and the decoration cover 1200 and after the clamping, the distance between two sides of the decoration cover 1200 can be kept unchanged, and meanwhile, the connection piece 1300 can have adjustability in the vertical direction. In the present embodiment, the hook slot 1331 is opened at the lower end of the connection portion 1330, and the opening direction of the hook slot 1331 faces downwards, so as to press and fix the lower end surface of the decoration cover 1200 to other structures of the range hood.

In some embodiments, the two ends of the connecting member 1300 can be fixedly connected to the two sides of the decorative cover 1200 by screws or rivets, or fixedly connected by welding, but the time required for disassembling the decorative cover 1200 and the connecting member 1300 by these fixing connection methods is long.

Referring to fig. 2, the decoration cover 1200 is a thin plate, a portion of two sides of the decoration cover 1200 extending to the rear end surface of the rack housing 1100 forms a rib 1240 opposite to the rear end surface, the two connection holes 1241 disposed at two sides of the decoration cover 1200 are respectively located on the two ribs 1240 formed at two sides, two ends of the connection piece 1300 are fixed with the connection holes 1241 on the ribs 1240, and the hook is clamped with the ribs 1240. Because the rib 1240 is located at the rear end surface of the rack casing 1100, and the connecting part 1300 and the rib 1240 are also located at the rear end surface of the rack casing 1100, the connecting part of the connecting part 1300 and the decoration cover 1200 cannot be observed in the front view, so that the function of hiding the connecting part 1330 of the decoration cover 1200 and the connecting part 1300 is achieved, and the attractive effect of the range hood in the front view is further improved.

In some embodiments, the first mounting portion 1310 is located at an outer side of the decorative cover 1200 and the rib 1240, the connecting portion 1330 is disposed at a side of the first mounting portion opposite to the rib 1240, and the connecting portion 1330 can be inserted into the connecting hole 1241 by moving the connecting member 1300 horizontally, and meanwhile, the inserted connecting portion 1330 is located inside the decorative cover 1200, so that the connecting portion 1330 can be better hidden, and the protruding connecting portion 1330 is prevented from scratching a person or a wall.

In some embodiments, the rib 1240 is formed by bending a sheet metal, or may be formed by welding.

With continued reference to fig. 1, the lower end of the rib 1240 of the trim cover 1200 is located at the rear end surface of the rack housing 1100, the upper end of the rib 1240 of the trim cover 1200 is higher than the top end surface of the rack housing 1100, and the connecting hole 1241 is located at the upper end surface of the rib 1240 to facilitate the installation or removal of the connecting element 1300 from the installation cavity.

Referring to fig. 1 and 3, the connecting member 1300 includes a first mounting portion 1310 and a second mounting portion 1320, both the first mounting portion 1310 and the second mounting portion 1320 are strip-shaped plates, one side of the first mounting portion 1310 is fixedly connected to one side of the second mounting portion 1320, and the first mounting portion 1310 and the second mounting portion 1320 have an included angle greater than 0 ° and less than 180 °, so that the first mounting portion 1310 and the second mounting portion 1320 form an angle structure, and the bending strength of the connecting member 1300 in the length direction is improved.

A threaded hole is formed in the top end face of the rack shell 1100, a screw through hole 1311 matched with the threaded hole is formed in the second mounting portion 1320, and after the plate surface of the second mounting portion 1320 is attached to the top end face of the rack, a screw penetrates through the threaded through hole to be connected with the threaded hole, so that the second mounting portion 1320 is fixedly connected with the top end face of the rack shell 1100. Of course, the second mounting portion 1320 may be fixed to the housing 1100 by riveting. The connecting portion 1330 and the hook groove 1331 provided at the lower end of the connecting portion 1330 are disposed at both ends of the first mounting portion 1310, both ends of the first mounting portion 1310 are located at the rear end surface of the rack housing 1100 and are parallel to the rib 1240, the connecting portion 1330 is disposed at both ends of the first mounting portion 1310 and faces the rear end surface of the rack housing 1100, and the connecting portion 1330 is perpendicular to the first mounting portion 1310, so that after the connecting member 1300 on the first mounting portion 1310 is connected to the connecting hole 1241 on the rib 1240, the connecting portion 1330 and the hook groove 1331 on the first mounting portion 1310 can be shielded by the first mounting portion 1310 and the decorative cover 1200.

Referring to fig. 4, in some embodiments, the mounting space of the rear end surface of the rack housing 1100 is limited, and therefore, the opening position of the hook slot 1331 is located at the connection position of the connection portion 1330 and the first mounting portion 1310, so that after the hook slot 1331 is connected with the connection hole 1241 on the rib 1240, the first mounting portion 1310 can be attached to the rib 1240, and the rib 1240 can provide a supporting force for the first mounting portion 1310, thereby preventing the second mounting portion 1320 from bending and deforming and reducing the mounting space of the rear end surface of the rack housing 1100 occupied by the first mounting portion 1310.

The first and second mounting

portions

1310 and 1320 are integrally formed and manufactured by a sheet metal process. Of course, the first mounting portion 1310 and the second mounting portion 1320 may also be fixedly connected by welding or by screwing or riveting, and the embodiment is not limited to the specific fixing manner of the first mounting portion 1310 and the second mounting portion 1320. In the related art, the top end surface of the rack housing 1100 is connected to the rear end surface of the rack housing 1100 at a generally right angle, and therefore, the first mounting portion 1310 and the second mounting portion 1320 in this embodiment are connected perpendicularly and have an included angle of 90 °, so that the first mounting portion 1310 can better fit with the top end surface of the rack housing 1100, and the second mounting portion 1320 can better fit with the rib 1240.

In some embodiments, a middle portion of the second mounting portion 1320 may further be provided with a protrusion toward the rear end surface of the rack housing 1100, so that the middle portion of the second mounting portion 1320 is attached to the rear end surface of the rack housing 1100, and both ends of the second mounting portion 1320 are attached to the rib 1240 of the trim cover 1200, so that the second mounting portion 1320 is more stably connected to the trim cover 1200 and the rack housing 1100.

Example two

The present embodiment provides a range hood, which includes the above-mentioned rack assembly 1000 and the box assembly 2000 located below the rack assembly 1000, the lower end of the rack casing 1100 is fixedly connected to the box assembly 2000, and when the decoration cover 1200 is covered outside the rack casing 1100, the lower end of the decoration cover 1200 is attached to the upper end of the box assembly 2000. Because the groove 1331 of the connecting piece 1300 is located at the lower end of the connecting portion 1330 in the foregoing, when the connecting piece 1300 is connected with the two sides of the decoration cover 1200, the groove 1331 is downwards clamped with the decoration cover 1200, and the lower end of the decoration cover 1200 is pressed and fixed on the upper end of the box assembly 2000, so that the decoration cover 1200 is further fixed, and the shaking of the decoration cover 1200 is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Claims

1. A frame assembly, comprising:

a rack housing;

2. The frame assembly of claim 1, wherein: decorate the cover and be located both sides on the rear end face all are equipped with the connecting hole, the both ends of connecting piece all set up connecting portion, two connecting portion insert respectively and correspond in the connecting hole fixed.

3. The rack assembly according to claim 2, wherein the connecting portion has a hook groove, and the hook groove is engaged with the decorative cover where the connecting hole is located.

4. The rack assembly according to claim 3, wherein the two sides of the decoration cover on the rear end face are flanges of the decoration cover opposite to the rear end face of the rack housing, and the connecting holes on the two sides of the decoration cover are respectively located on the two corresponding flanges.

5. The rack assembly according to claim 4, wherein the connecting member includes a first mounting portion and a second mounting portion fixedly connected to the first mounting portion, two of the connecting portions are respectively disposed at two ends of the first mounting portion, the first mounting portion is fixed to the rear end surface of the rack housing, and the second mounting portion is fixed to the top end surface of the rack housing.

6. The frame assembly of claim 5, wherein the hook slot is located at a connection of the connecting portion and the first mounting portion, and the first mounting portion is attached to the rib.

7. The frame assembly of claim 5, wherein the first mounting portion, the second mounting portion, and the connecting portion are integrally formed.

8. The rack assembly according to claim 5, wherein the second mounting portion has a through hole, the top end surface of the rack housing has a threaded hole corresponding to the through hole, and the second mounting portion is fixedly connected to the top end surface of the rack housing after passing through the through hole and being connected to the threaded hole by a screw.

9. The frame assembly of claim 8, wherein the frame housing includes a frame top plate at a top end face of the frame housing, the threaded hole opening in the frame top plate.

10. A range hood, comprising the rack assembly as claimed in any one of claims 1 to 9 and a box body component located below the rack assembly, wherein the lower end of the rack assembly is fixedly connected with the box body component, and the lower end of the decorative cover is pressed and fixed on the box body component through the connecting piece.