CN220507215U - Shell assembly capable of reducing exposure of fastening piece and fresh air equipment - Google Patents

Abstract

The utility model discloses a shell assembly for reducing the exposure of a fastener and fresh air equipment, wherein the shell assembly comprises a main body, a cover body and a connecting structure, wherein the main body is provided with a mounting cavity, the upper side of the main body is provided with an opening communicated with the mounting cavity, the mounting cavity is used for accommodating a fan component of the fresh air equipment, the cover body is arranged on the upper side of the main body and covers the opening, the connecting structure comprises a first connecting part arranged on the main body and a second connecting part arranged on the cover body, and the first connecting part and the second connecting part are detachably connected and matched so that the cover body is detachably connected with the main body, and the connecting structure covers the lower side of the cover body. According to the utility model, the main body is integrally provided with the fastener-free parts to be exposed, and the connecting structure for assembling the cover body and the main body is covered by the cover body, so that the fresh air equipment is convenient to assemble, the assembly efficiency is improved, and the fresh air equipment is smooth and attractive in appearance without obvious fastener exposure.

Description

Shell assembly capable of reducing exposure of fastening piece and fresh air equipment

Technical Field

The utility model relates to the technical field of air conditioning, in particular to a shell assembly for reducing exposure of a fastener and fresh air equipment.

Background

With the increasing demand of consumers for air quality, new fans are becoming increasingly popular in more homes and public environments. Current fresh air machine housings are made mainly using sheet metal processes, i.e. the housings are usually assembled with each other by a plurality of plates using a large number of small fasteners such as screws, rivets, etc., and such structures result in a large number of small fasteners left on the exterior surface of the fresh air machine, which is not attractive.

In order to improve the above problem, the main part of the casing in the prior art may be formed by a welding process, so that the exposure of the small-sized fasteners caused by the mutual fixing of part of the boards can be saved, but since a plurality of parts are generally required to be assembled in the fresh air system and part of the parts are required to be disassembled or replaced in the use stage, an installation cover plate for final assembly and maintenance is still required to be reserved, which results in the condition that the small-sized fasteners are exposed at the cover plate of the fresh air machine.

Disclosure of Invention

Therefore, the utility model aims to provide a shell assembly and fresh air equipment, which can reduce the exposure of small fasteners and have a more concise and attractive appearance.

In order to solve the above technical problems, the present utility model provides a housing assembly for reducing exposure of a fastener, including:

the main body is integrally arranged, a mounting cavity is formed in the main body, an opening communicated with the mounting cavity is formed in the upper side of the main body, and the mounting cavity is used for accommodating a fan component of fresh air equipment;

the cover body is arranged on the upper side of the main body and covers the opening; the method comprises the steps of,

the connecting structure comprises a first connecting part arranged on the main body and a second connecting part arranged on the cover body, wherein the first connecting part and the second connecting part are detachably connected and matched, so that the cover body is detachably connected with the main body.

In an embodiment, the open inner Zhou Cetu is provided with a mounting rib, the first connecting portion includes a plurality of mounting holes penetrating the mounting rib along an up-down direction, the second connecting portion includes a plurality of mounting posts protruding from a lower side of the cover, the mounting posts are correspondingly clamped to the mounting holes one by one, and the cover is supported on an upper side of the mounting rib.

In an embodiment, the main body includes a bottom plate, and a first side plate, a second side plate, a third side plate and a fourth side plate that extend along an up-down direction respectively, where the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected in a circumferential direction, and lower side edges are respectively connected with a circumferential side of the bottom plate, and upper side edges are jointly enclosed to form the opening.

In an embodiment, the first side plate and the third side plate are arranged at intervals in the front-rear direction, the second side plate and the fourth side plate are arranged at intervals in the transverse direction, the tops of the second side plate, the third side plate and the fourth side plate are flush, the tops of the first side plate are lower than the tops of the second side plate, the third side plate and the fourth side plate and flush with the upper side of the mounting rib, so that a mounting gap communicated with the opening is formed above the first side plate, each mounting hole is arranged in an elongated shape extending in the front-rear direction, and each mounting post and each mounting hole are slidably matched in the front-rear direction, so that the cover body has a sliding stroke of sliding backwards from the mounting gap to be assembled with the main body.

In an embodiment, each mounting column includes a connecting column connected to the lower side of the cover and a clamping column arranged at the lower end of the connecting column, the size of the clamping column in the transverse direction is larger than that of the connecting column, the mounting holes include a plurality of first mounting holes distributed at intervals along the upper sides of the first side plate and the second side plate, and a plurality of second mounting holes distributed at intervals along the upper sides of the third side plate and the fourth side plate, each first mounting hole is provided with a notch groove with an open front side, the size of the notch groove in the transverse direction is larger than that of the connecting column and smaller than that of the clamping column, each second mounting hole is provided with a front hole section and a rear hole section distributed in sequence in the front-rear direction, the size of the front hole section in the transverse direction is larger than that of the clamping column, and the size of the rear hole section in the transverse direction is larger than that of the connecting column and smaller than that of the clamping column.

In an embodiment, the front side of the first side plate is flush with the front side of the cover body, and the first side plate is provided with an electric control manhole, a heat exchange core manhole and a filter screen manhole in a penetrating manner along the front-rear direction.

In an embodiment, the housing assembly further comprises an access cover, the access cover is openably and closably covered on the front side of the cover body and the first side plate, the access cover comprises a first access cover covering the front of the electric control access hole, and a second access cover covering the heat exchange core access hole and the filter screen access hole, the first access cover is rotatably connected to the fourth side plate at one side in the transverse direction, and the second access cover is detachably clamped on the first side plate.

In one embodiment, the cover includes:

the front side of the first cover plate is provided with a front installation plate in a protruding mode, a reinforcing hole is formed in the front installation plate in a penetrating mode in the front-rear direction, and the front installation plate is connected to the front side of the first side plate in a threaded mode through a bolt penetrating through the reinforcing hole;

the second cover plate is assembled on the lower side of the first cover plate, a cavity is formed between the first cover plate and the second cover plate, and a plurality of mounting columns are convexly arranged on the lower side of the second cover plate; the method comprises the steps of,

the handle group is concavely arranged on the upper side of the first cover plate and is at least partially accommodated in the cavity.

In an embodiment, the bottom plate, the first side plate, the second side plate, the third side plate, and the fourth side plate are welded to each other to form the main body.

In order to solve the technical problems, the utility model provides fresh air equipment, which comprises:

the housing assembly for reducing the exposure of the fastening member as described above, wherein an air inlet side air duct and an air outlet side air duct are formed in the installation cavity, and the air inlet side air duct and the air outlet side air duct are respectively used for communicating indoor and outdoor; the method comprises the steps of,

the fan component comprises an air inlet side fan arranged in the air inlet side air duct and an air outlet side fan arranged in the air outlet side air duct.

The technical scheme provided by the utility model has the following advantages:

the utility model provides a shell assembly for reducing the exposure of a fastener and fresh air equipment with the shell assembly, wherein the shell assembly comprises a main body, a cover body and a connecting structure, the main body is provided with a mounting cavity, the upper side of the main body is provided with an opening communicated with the mounting cavity, the mounting cavity is used for accommodating a fan component of the fresh air equipment, the cover body is arranged on the upper side of the main body and covers the opening, the connecting structure comprises a first connecting part arranged on the main body and a second connecting part arranged on the cover body, and the first connecting part and the second connecting part are detachably connected and matched so that the cover body is detachably connected with the main body, and the connecting structure covers the lower side of the cover body. In the embodiment provided by the utility model, the main body is integrally provided with the fastener-free parts to be exposed, and the connecting structure for assembling the cover body and the main body is covered by the cover body, so that on one hand, the fresh air equipment is convenient to assemble, the assembly efficiency is improved, and on the other hand, the fresh air equipment has no obvious fastener-free parts to be exposed, and the appearance is smooth and attractive.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of a fresh air device according to the present utility model;

FIG. 2 is an exploded perspective view of the fresh air apparatus of FIG. 1;

FIG. 3 is a partial perspective view of the fresh air apparatus of FIG. 1 with the cover and access cover removed;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an exploded perspective view of the cover of FIG. 2;

FIG. 6 is a schematic perspective view of the underside of the second cover plate in FIG. 5;

fig. 7 is an enlarged schematic view at B in fig. 6.

Reference numerals illustrate:

100-fresh air equipment; 1-a housing assembly; 10-a body; 11-a first side plate; 111-an electric control manhole; 112-heat exchange core manhole; 113-a filter screen manhole; 12-a second side panel; 13-a third side panel; 14-a fourth side panel; 15-a bottom plate; 16-mounting ribs; 101-a mounting cavity; 102-open; 103-mounting notch; 20-a cover body; 21-a first cover plate; 211-mounting a front plate; 212-reinforcing holes; 22-a second cover plate; 23-handle group; 30-mounting holes; 31-a first mounting hole; 32-a second mounting hole; 321-a front hole section; 322-a rear hole section; 40-mounting posts; 41-connecting columns; 42-clamping the column; 50-access cover; 51 a first access cover; 52-a second access cover; 60-an electric control board; 61 air intake side fans; 62-an air outlet side fan; 63-heat exchange core; 64 screens.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Referring to fig. 1 and 2, the present utility model provides a housing assembly 1 and a fresh air device 100 for reducing the exposure of fasteners, wherein the fresh air device 100 is used for delivering outdoor fresh air indoors and exhausting indoor turbid air outdoors. The fresh air device 100 comprises a housing assembly 1 and a fan component, wherein an air inlet side air channel and an air outlet side air channel are formed in a mounting cavity 101 of the housing assembly 1 and are respectively used for being communicated with indoor and outdoor. The fan component comprises an air inlet side fan 61 arranged in the air inlet side air duct and an air outlet side fan 62 arranged in the air outlet side air duct, wherein the air inlet side fan 61 is used for driving outdoor airflow to flow from the air inlet side air duct to the indoor, and the air outlet side fan 62 is used for driving indoor turbid air to flow from the air outlet side air duct to the outdoor. The fresh air device 100 may further include other components such as a heat exchange core 63 and a filter screen 64 in the air intake side air duct or the air outlet side air duct as required, so as to improve the functionality and performance of the fresh air device 100.

The present utility model provides a housing assembly, the structure of which is schematically shown in fig. 1 to 3, and the housing assembly 1 includes a main body 10, a cover 20 and a connection structure. The main body 10 is integrally provided, the main body 10 is formed with a mounting cavity 101, an opening 102 communicating with the mounting cavity 101 is formed on the upper side of the main body 10, and the mounting cavity 101 is used for accommodating a fan component (shown in fig. 2) of the fresh air equipment 100. The cover 20 is provided on the upper side of the main body 10 and covers the opening 102. The connecting structure comprises a first connecting part arranged on the main body 10 and a second connecting part arranged on the cover body 20, wherein the first connecting part and the second connecting part are detachably connected and matched, so that the cover body 20 is detachably connected with the main body 10.

In this embodiment, due to the adoption of the integral main body 10 and the cover body 20 which are detachably connected, the fresh air device 100 does not need to use a large number of small fasteners during assembly, so that the exposure condition of the small fasteners is reduced, and the appearance aesthetic property of the fresh air device 100 is improved. Meanwhile, the cover 20 can be conveniently detached and installed, so that the fan component inside the fresh air device 100 can be conveniently overhauled or replaced.

The specific forms of the connecting part and the connecting matching part can be various, such as a buckle and a clamping groove which are matched with each other, a bolt and a screw hole, and the like. In a preferred embodiment, as shown in fig. 3 and 4, the inner portion Zhou Cetu of the opening 102 is provided with the mounting rib 16, the first connecting portion includes a plurality of mounting holes 30 penetrating the mounting rib 16 along the up-down direction, the second connecting portion includes a plurality of mounting posts 40 protruding from the lower side of the cover 20, the plurality of mounting posts 40 are correspondingly clamped to the plurality of mounting holes 30, and the cover 20 is supported on the upper side of the mounting rib 16.

In this embodiment, the fastening structure of the mounting hole 30 and the mounting post 40 on the mounting rib 16 is adopted, so that the cover 20 can be firmly connected to the main body 10, and meanwhile, the cover can be conveniently detached and mounted without using small fasteners such as screws. In addition, since the mounting ribs 16 and the mounting holes 30 are both located at the inner peripheral side of the opening 102 and the mounting posts 40 are both located at the lower side of the cover 20, there is no exposure of the small-sized fasteners in appearance, improving the external beauty of the fresh air equipment 100.

In one embodiment of the present utility model, as shown in fig. 2, the main body 10 includes a bottom plate 15, and a first side plate 11, a second side plate 12, a third side plate 13, and a fourth side plate 14 that extend in the up-down direction, where the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14 are sequentially connected in the circumferential direction, and the lower side edges are respectively connected to the circumferential side of the bottom plate 15, and the upper side edges are jointly enclosed to form an opening 102. The bottom plate 15, the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 are integrally formed, for example, can be integrally injection molded, and preferably, the plate 15, the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 are mutually welded to form the main body 10, so that small fasteners are not needed, the assembly is simple and convenient, the installation efficiency is improved, and the appearance aesthetic property of the fresh air equipment 100 is improved.

Further, as shown in fig. 3, the first side plate 11 is disposed at intervals in the front-rear direction with the third side plate 13, the second side plate 12 and the fourth side plate 14 are disposed at intervals in the lateral direction, the tops of the second side plate 12, the third side plate 13 and the fourth side plate 14 are flush, and the tops of the first side plate 11 are lower than the second side plate 12, the third side plate 13 and the fourth side plate 14 and flush with the upper side of the mounting rib 16, so that a mounting notch 103 communicating with the opening 102 is formed above the first side plate 11. Each mounting hole 30 is provided in an elongated shape extending in the front-rear direction, and each mounting post 40 is slidably engaged with each mounting hole 30 in the front-rear direction so that the cover 20 has a sliding stroke of sliding rearward from the mounting notch 103 to be fitted in place with the main body 10. In this way, the cover 20 can be inserted into the upper side of the opening 102 through the mounting notch 103 and slid in place along the sliding direction of the mounting hole 30 and the mounting post 40, thereby achieving the connection of the cover 20 and the main body 10. Similarly, the cover 20 can be removed from the body 10 by sliding in the opposite direction and removing the cover from the mounting notch 103. This sliding connection allows for more convenient and quick installation and removal of the cover 20. And the lid 20 inlays and locates the main part upside, and the week side of lid 20 is covered by curb plate all around, avoids the fastening structure of lid 20 week side to reveal and establishes.

In a preferred embodiment, as shown in fig. 3 to 7, each mounting post 40 includes a connection post 41 connected to the lower side of the cover 20 and a snap post 42 provided at the lower end of the connection post 41, the snap post 42 having a larger size in the lateral direction than the connection post 41. The plurality of mounting holes 30 include a plurality of first mounting holes 31 spaced apart along the upper sides of the first and second side plates 11 and 12, and a plurality of second mounting holes 32 spaced apart along the upper sides of the third and fourth side plates 13 and 14. Each first mounting hole 31 is provided as a notch groove with an open front side, and the size of the notch groove in the transverse direction is larger than the connecting column 41 and smaller than the clamping column 42. Each of the second mounting holes 32 has a front hole section 321 and a rear hole section 322 which are sequentially distributed in the front-rear direction, the front hole section 321 being larger than the click post 42 in the lateral direction, the rear hole section 322 being larger than the connection post 41 and smaller than the click post 42 in the lateral direction. When the cover 20 is connected to the main body 10, during the sliding stroke of the cover 20, the partial connecting posts 41 slide backward along the first mounting holes 31 from the notch grooves of the first mounting holes 31, the partial connecting posts 41 slide backward from the front hole sections 321 of the second mounting holes 321 to the rear hole sections 322, the clamping posts 42 are positioned at the lower sides of the mounting ribs 16, the transverse dimension of the clamping posts 42 is larger than that of the notch grooves, and the transverse dimension of the rear hole sections 322 is smaller than that of the clamping posts 42, so that the clamping posts 42 are clamped in the rear hole sections 322, and the clamping posts 42 are matched with the mounting ribs 16 after the cover 20 is assembled backward to limit the cover 20 from loosening up and down. In this way, a stable connection of the cover 20 and the body 10 is achieved. When the cover 20 is detached from the main body 10, the sliding is performed in the opposite steps.

The housing assembly provided in this embodiment, due to the adoption of the fitting structure of the connecting post 41 and the clamping post 42 with the first mounting hole 31 and the second mounting hole 32, allows the cover 20 to be connected to and detached from the main body 10 by simply sliding, without using small fasteners such as screws. Meanwhile, since the connecting post 41 and the clamping post 42 are both located at the lower side of the cover 20, and the first mounting hole 31 and the second mounting hole 32 are both located at the inner peripheral side of the opening 102, no small fastener is exposed in appearance, and the appearance aesthetic property of the fresh air device 100 is improved.

In a preferred embodiment, as shown in fig. 2 and 3, the front side of the first side plate 11 is flush with the front side of the cover 20, and the first side plate 11 is perforated with electric control service holes 111, heat exchange core service holes 112, and screen service holes 113 in the front-rear direction. The electrically controlled access holes 111 are used to access the electrically controlled panel 60 (shown in fig. 2) of the fresh air equipment 100, the heat exchange core access holes 112 are used to replace or maintain the heat exchange core 63 (shown in fig. 2) of the fresh air equipment 100, and the filter screen access holes 113 are used to replace or maintain the filter screen 64 (shown in fig. 2) of the fresh air equipment 100. In this way, the electric control plate 60, the heat exchange core 63 and the filter screen 64 of the fresh air device 100 can be detached from or replaced from the front side of the first side plate 11, thereby facilitating the maintenance of the fresh air device 100.

In one embodiment provided by the present utility model, as shown in fig. 1 and 2, the housing assembly 1 further includes an access cover 50, the access cover 50 being openably and closably provided to the front sides of the cover body 20 and the first side plate 11, the access cover 50 including a first access cover 51 provided to cover in front of the electric control access hole 111, and a second access cover 52 provided to cover the heat exchange core access hole 112 and the screen access hole 113. The first access cover 51 is rotatably connected to the fourth side plate 14 at one side in the lateral direction, and the second access cover 52 is detachably fastened to the first side plate 11. When the electric control plate 60, the heat exchange core 63 or the filter screen 64 of the fresh air device 100 needs to be overhauled or replaced, the corresponding first access cover 51 or the second access cover 52 is only required to be opened or removed. Meanwhile, the first access cover 51 and the second access cover 52 can also cover the front side of the cover body, so that the appearance of the housing assembly 1 is smoother and more attractive. Thus, the access cover 50 can protect the components inside the fresh air device 100 from external pollution or damage, and can shield the components inside the fresh air device 100 from influencing the appearance aesthetic property.

On the basis of the above embodiment, as shown in fig. 5, the cover 20 includes a first cover 21, a second cover 22 and a handle set 23, where a front side edge of the first cover 21 is provided with a front mounting plate 211 protruding downward, a reinforcing hole 212 is formed in the front mounting plate 211 in a front-rear direction, and the front mounting plate 211 is screwed to a front side of the first side plate 11 by a bolt penetrating through the reinforcing hole 212, so that the cover 20 is restricted from sliding forward. The second cover plate 22 is assembled on the lower side of the first cover plate 21, a cavity is formed between the first cover plate 21 and the second cover plate 22, and a plurality of mounting posts 40 are convexly arranged on the lower side of the second cover plate 22. The handle set 23 is recessed on the upper side of the first cover plate 21 and is at least partially accommodated in the cavity. The handle set 23 can be used to conveniently lift or move the housing assembly 1 or the fresh air device 100. So, the fastening structure between second connecting portion and the lid 20 sets up in second apron 22, and first apron 21 outward appearance is level and smooth and cover in second apron 22 upside for avoid fastening structure to reveal, make the new trend equipment appearance of equipment completion not have the fastener to expose, and the lid 20 structure that has the cavity still plays the sound insulation effect, reduces the noise of new trend equipment 100 during operation.

The fresh air equipment 100 provided by the utility model adopts the shell assembly 1 as the shell structure thereof, so that the fresh air equipment 100 has the advantages of smooth and attractive appearance, convenience and rapidness in assembly, simplicity and easiness in maintenance and the like.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims (10)

1. A housing assembly for reducing fastener exposure, comprising:

the main body is integrally arranged, a mounting cavity is formed in the main body, an opening communicated with the mounting cavity is formed in the upper side of the main body, and the mounting cavity is used for accommodating a fan component of fresh air equipment;

the cover body is arranged on the upper side of the main body and covers the opening; the method comprises the steps of,

the connecting structure comprises a first connecting part arranged on the main body and a second connecting part arranged on the cover body, wherein the first connecting part and the second connecting part are detachably connected and matched, so that the cover body is detachably connected with the main body.

2. The fastener exposure reducing housing assembly according to claim 1, wherein the open interior Zhou Cetu is provided with a mounting rib, the first connecting portion includes a plurality of mounting holes penetrating the mounting rib in an up-down direction, the second connecting portion includes a plurality of mounting posts protruding from a lower side of the cover body, the plurality of mounting posts are engaged with the plurality of mounting holes in a one-to-one correspondence, and the cover body is supported on an upper side of the mounting rib.

3. The fastener exposure-reducing housing assembly according to claim 2, wherein the main body includes a bottom plate, and first, second, third and fourth side plates extending in an up-down direction, respectively, the first, second, third and fourth side plates being disposed in series in a circumferential direction, and lower side edges being connected to the circumferential sides of the bottom plate, respectively, and upper side edges being enclosed together to form the opening.

4. A fastener exposure reducing housing assembly according to claim 3 wherein the first side panel is spaced apart from the third side panel in a front-to-rear direction, the second side panel and the fourth side panel are spaced apart in a lateral direction, the tops of the second side panel, the third side panel and the fourth side panel are flush, the tops of the first side panel being lower than the tops of the second side panel, the third side panel and the fourth side panel and flush with the upper side of the mounting rib such that a mounting gap is formed above the first side panel in communication with the opening, each mounting hole being provided in an elongated configuration extending in a front-to-rear direction, each mounting post slidably engaging each mounting hole in a front-to-rear direction such that the cover has a sliding travel from the mounting gap back to fit into position with the body.

5. The fastener exposure reducing housing assembly according to claim 4, wherein each of the mounting posts includes a connecting post connected to a lower side of the cover and a snap post provided at a lower end of the connecting post, the snap post having a larger size in a lateral direction than the connecting post, the plurality of mounting holes including a plurality of first mounting holes spaced along upper sides of the first side plate and the second side plate, and a plurality of second mounting holes spaced along upper sides of the third side plate and the fourth side plate, each of the first mounting holes being provided in a notch groove open at a front side, the notch groove having a larger size in a lateral direction than the connecting post and smaller than the snap post, each of the second mounting holes having a front hole section and a rear hole section spaced in a sequential direction, the front hole section having a larger size in a lateral direction than the snap post, the rear hole section having a larger size in a lateral direction than the connecting post and smaller than the snap post.

6. The fastener exposure reducing housing assembly of claim 4, wherein the front side of the first side plate is flush with the front side of the cover, and the first side plate is perforated in a front-to-rear direction with electrically controlled access holes, heat exchanger core access holes, and screen access holes.

7. The fastener exposure reduction housing assembly of claim 6, further comprising an access cover openably and closably covering the front sides of the cover and the first side plate, the access cover comprising a first access cover covering the front of the electrically controlled access aperture, and a second access cover covering the heat exchange core access aperture and the screen access aperture, the first access cover being rotatably connected to the fourth side plate on one side in a lateral direction, the second access cover being removably snap-fit to the first side plate.

8. The fastener exposure reducing housing assembly of any one of claims 4 to 7, wherein the cover comprises:

the front side of the first cover plate is provided with a front installation plate in a protruding mode, a reinforcing hole is formed in the front installation plate in a penetrating mode in the front-rear direction, and the front installation plate is connected to the front side of the first side plate in a threaded mode through a bolt penetrating through the reinforcing hole;

the second cover plate is assembled on the lower side of the first cover plate, a cavity is formed between the first cover plate and the second cover plate, and a plurality of mounting columns are convexly arranged on the lower side of the second cover plate; the method comprises the steps of,

the handle group is concavely arranged on the upper side of the first cover plate and is at least partially accommodated in the cavity.

9. The fastener exposure reducing housing assembly according to any one of claims 3 to 7, wherein the bottom panel, the first side panel, the second side panel, the third side panel, and the fourth side panel are welded to one another to form the body.

10. A fresh air device, comprising:

the fastener exposure-reducing housing assembly according to any one of claims 1 to 8, wherein an air intake side air duct and an air outlet side air duct are formed in the installation chamber, the air intake side air duct and the air outlet side air duct being respectively for communication between indoor and outdoor; the method comprises the steps of,

the fan component comprises an air inlet side fan arranged in the air inlet side air duct and an air outlet side fan arranged in the air outlet side air duct.