CN111343812A

CN111343812A - Fire retardant housing and electronic equipment

Info

Publication number: CN111343812A
Application number: CN202010151511.9A
Authority: CN
Inventors: 朱乘军
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-06-26
Anticipated expiration: 2040-03-06
Also published as: CN111343812B

Abstract

The application discloses back-fire relief shell and electronic equipment includes: the upper cover is provided with a first bottom plate and a first side plate, the first side plate extends from the first bottom plate to the direction deviating from the plane of the first bottom plate, the first bottom plate and the first side plate are enclosed to form a first accommodating cavity for accommodating a power supply, and the first side plate is provided with a wiring port; the top cap, with the upper cover block, the top cap has second bottom plate and second curb plate, and the second curb plate is extended to the orientation that deviates from second bottom plate place plane by the second bottom plate, and the second bottom plate encloses with the second curb plate and establishes the second that is used for holding the upper cover and holds the chamber, corresponds position department with the wiring mouth on the second bottom plate and is equipped with the protrusion piece that is used for filling the wiring mouth. This application is when the protection power, and the flame that can also produce in all directions separation power department can also fill the space that the wiring mouth exposes, avoids flame to spread to the outside by wiring mouth department. Therefore, the fire-retardant shell of the application has high fire-retardant grade, safe use and wide application range.

Description

Fire retardant housing and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment accessories, in particular to a fire retardant shell and electronic equipment.

Background

Along with the development of science and technology and the improvement of living standard of people, more and more electronic products fill the life of people, bring great convenience to people and bring many potential safety hazards. Therefore, ensuring the fire-proof function of the electronic product is a crucial part in eliminating the safety hazard. The power source is an energy source of the electronic product, and needs to be connected with an external power grid for charging frequently, so that the power source is easy to become an ignition source of the electronic product. When the power supply is on fire, the flame can spread around the position as the center and spread to other electronic components, and the danger is extremely high. Although all be provided with fire resistive construction among the present electronic product, do not do the pertinence design in the source power position department that catches fire mostly, flame easily diffuses, leads to electronic product's fire prevention level lower, and there is great limitation in the applicable scene.

Content of application

The application provides a back-fire relief shell and electronic equipment can prevent the flame diffusion of power department, improves fire-protection rating.

According to one aspect of the application, there is provided a firestop enclosure comprising:

the upper cover is provided with a first bottom plate and a first side plate, the first side plate extends from the first bottom plate to the direction deviating from the plane of the first bottom plate, the first bottom plate and the first side plate are enclosed to form a first accommodating cavity for accommodating a power supply, and the first side plate is provided with a wiring port;

the top cap is connected with the upper cover, and the top cap has second bottom plate and second curb plate, and the second curb plate is extended to the orientation that deviates from second bottom plate place plane by the second bottom plate, and the second bottom plate encloses with the second curb plate and establishes the second that is used for holding the upper cover and holds the chamber, corresponds position department with the wiring mouth on the second bottom plate and is equipped with the protrusion piece that is used for filling the wiring mouth. This design can wrap up the power completely and hold the intracavity at first holding chamber and second, when protecting the power, can also be in the flame that produces of all directions upper separation power department, even in wiring mouth position department, also owing to there being the existence of protrusion piece, can get up the space filling that the wiring mouth exposes, avoid flame to spread to the outside by wiring mouth department. High fire-proof grade and safe use.

According to some embodiments, the number of the first side plates is four, each first side plate is respectively distributed around the first bottom plate to form a closed first accommodating cavity, and at least one first side plate is provided with a wiring port. This design can make the power be in the confined first chamber that holds, and the power all is equipped with first curb plate all around, relies on first curb plate to realize the separation to power department flame, and the reliability is higher.

According to some embodiments, the top cover further comprises a steel sheet, the shape of the steel sheet is the same as that of the second bottom plate, the size of the steel sheet is the same as that of the second bottom plate, and the steel sheet is embedded in the second bottom plate. This design can make whole all covered by the steel sheet in the second bottom plate, after electronic equipment's power was on fire, even take place the engineering plastics of second bottom plate all impaired adverse circumstances, the existence of steel sheet also can ensure that flame can not break through the restriction of top cap and stretch to the outside, has promoted the factor of safety of back-fire relief shell.

According to some embodiments, a surface of the second bottom plate facing the second receiving chamber is coated with a fire retardant coating. This design can reduce the second bottom plate surface the flammability, retard the speed of stretching of flame for improve the fire endurance of second bottom plate, further strengthen the back-fire relief effect of top cap and in order to promote the factor of safety in use of back-fire relief shell.

According to some embodiments, the first bottom panel is integrally formed with the first side panel;

the second bottom plate and the second side plate are integrally formed. This design can make upper cover, top cap have an organic whole nature, and the structure is inseparabler firm not have the gap, is favorable to the separation flame. And moreover, the processing procedures of the upper cover and the top cover can be reduced by adopting an integrated forming process, the batch production is facilitated, the production efficiency is improved, and the production cost is reduced.

According to some embodiments, the assembly gap of the upper cover and the power supply is less than 1mm, and the assembly gap of the top cover and the upper cover is less than 1 mm. This design can make the unable clearance transmission of following between upper cover and the top cap of flame of power department go out, and fire behavior is good, and factor of safety is high.

According to some embodiments, the upper cover further comprises a placing area for placing the electronic element, and the placing area is formed by enclosing one side of the first side plate, which faces away from the first accommodating cavity, and the first bottom plate. The design can flexibly adjust the installation and distribution positions of electronic elements in the electronic equipment, and is convenient for the integral assembly of the electronic equipment.

According to some embodiments, the upper cover further includes a third bottom plate disposed in the placement area, the third bottom plate is fixed to the first bottom plate, and the electronic component is disposed on a surface of the third bottom plate. The design can facilitate the installation and distribution of the electronic components in the placement.

According to some embodiments, a bent portion is disposed on a side of the third bottom plate close to the first side plate, and the bent portion extends toward a direction close to the first bottom plate. This design can avoid causing the influence to the electronic component on the third bottom plate with the flame that probably reveals from first curb plate department also the separation outside the kink, has further promoted the back-fire relief performance of the back-fire relief shell of this embodiment.

According to another aspect of the present application, there is provided an electronic device including:

a firestopped enclosure as in any one of the above. The design can prevent flame generated at the power supply of the electronic equipment from being blocked and prevent the flame from diffusing from the wiring port to the outside. High fire-proof grade and safe use.

The application provides a back-fire relief shell and electronic equipment, this back-fire relief shell include upper cover and top cap. The upper cover has first bottom plate and first curb plate, and first bottom plate encloses with first curb plate and establishes into the first chamber that holds that can hold the power, and has seted up the wiring mouth on the first curb plate. The top cover is provided with a second bottom plate and a second side plate, a second accommodating cavity capable of accommodating the upper cover is formed by the second bottom plate and the second side plate in a surrounding mode, and a protruding piece capable of filling the wiring port is arranged on the second bottom plate. This application is through the structural design of upper cover and top cap, wraps up the power completely and holds the intracavity at first chamber and the second of holding, when protecting the power, can also be in the flame that produces of separation power department in all directions, even at wiring mouth position department, also owing to there is the existence of protrusion, can pack the space that the wiring mouth exposes, avoids flame to spread to the outside by wiring mouth department. Therefore, the fire-retardant shell of the application has high fire-retardant grade, safe use and wide application range.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of the structure of a firestop enclosure in an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of the upper cover in the embodiment of the present application;

FIG. 3 is a schematic view of the internal structure of the top cover in the embodiment of the present application;

FIG. 4 is an enlarged schematic view of the embodiment of the present application showing the engagement between the protrusion and the wire connection port;

FIG. 5 is an exploded view of the power supply and electronics in an installed position in a firestopped housing in an embodiment of the present application;

fig. 6 is a schematic cross-sectional view illustrating a positional relationship between the third base plate and the first base plate in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Although the fire retardant housings in the prior art are provided with fire resistant structures, most of them are not specifically designed at locations of the power source where fires are likely to occur. Thus, when a power supply inside the electronic device is ignited, the flame spreads around the power supply, and spreads to other electronic components, resulting in large-area combustion, which is extremely dangerous. Therefore, the application range of the product in the prior art has great limitation. For this reason, IEC (International Electro technical commission) has established the IEC62368 standard, which requires that circuit power (including cells) of electronic equipment exceed 15W and requires a V0 fire rating for the housing structure, and requires enforcement in most countries and regions of the world. The V0 fire rating is an evaluation rating for fire safety to evaluate the ability of a material to extinguish after being ignited. The fire-retardant grades are increased by HB, V2, V1 and V0. The specific requirements of the V0 fire rating are: after two 10 second burn tests on the samples, the flame extinguished within 10 seconds. No combustible material can fall off.

Referring to fig. 1-6, to address the above-mentioned problems, embodiments of the present application provide a firestop housing 100, where the firestop housing 100 includes an upper cover 110 and a top cover 120. As the name implies, the fire-retardant housing 100 is a housing structure with a fire-retardant function in the electronic device 10, and is used for carrying, fixing and protecting various components inside the electronic device 10, and its appearance, size, shape, etc. vary with different functional requirements of the electronic device 10, and is not limited herein.

The upper cover 110 is one of main structures of the fire retardant housing 100, and the upper cover 110 has a first bottom plate 111 and a first side plate 112, and the first side plate 112 extends from the first bottom plate 111 to a direction away from a plane where the first bottom plate 111 is located. That is, the first bottom plate 111 and the first side plate 112 are both plate-shaped structures, and their thickness dimensions are small and negligible compared with their other two dimensions. The first bottom plate 111 and the first side plate 112 are not coplanar, and one end of the first side plate 112 is fixed to the first bottom plate 111 in an unlimited manner, which may be welding, gluing, screwing, or the like. The other end of the first side plate 112 extends out of the plane of the first bottom plate 111, and the extending direction is away from the first bottom plate 111. Therefore, the first bottom plate 111 intersects with the first side plate 112 and forms an included angle. Since other components or assemblies of the electronic device 10 can be further mounted in the space outside the first accommodating cavity 113 on the first bottom plate 111, the fixing position of the first side plate 112 on the first bottom plate 111 may be at the edge of the first bottom plate 111, or may not be at the edge of the first bottom plate 111, according to the mounting conditions of other components or assemblies on the first bottom plate 111. When a component of the electronic device 10 is mounted on the first bottom plate 111, the component may cooperate with the first side plate 112 to enclose the first accommodating cavity 113, and at this time, the number of the first side plate 112 may be reduced appropriately. When the first bottom plate 111 is not provided with other components of the electronic device 10, at least three first side plates 112 are required to be connected end to end on the first bottom plate 111 to form a closed space, which is the first accommodating cavity 113. The included angle between the first side plate 112 and the first bottom plate 111 is not limited, and may be an acute angle, a right angle, or an obtuse angle. In the present embodiment, in order to increase the fixing firmness between the first side plate 112 and the first bottom plate 111, the included angle is set to be a right angle, that is, the first side plate 112 is disposed perpendicular to the first bottom plate 111. In order to avoid scratching components inside the electronic device 10, rounded corners may be disposed at the connecting position of the first side plate 112 and the first bottom plate 111 to form smooth transition, and the appearance of the upper cover 110 is improved. Accordingly, after the power source 130 is disposed in the closed first receiving cavity 113, the first bottom plate 111, the first side plate 112 and other parts or components of the electronic device 10 are used to block the power source 130, so that the flame at the power source 130 can be blocked in all directions in the plane of the first bottom plate 111. The first bottom plate 111 and the first side plate 112 need to be made of fireproof materials, for example, in this embodiment, the first bottom plate 111 and the first side plate 112 are made of AT140 aluminum-titanium alloy, and such materials have the advantages of small density, high strength, high temperature resistance, good oxidation resistance, and the like.

In addition, in order to facilitate the wiring cable 150 of the power supply 130, the first side plate 112 is provided with a wiring port 114. The wiring connected to the power source 130 may be connected to the outside of the first receiving chamber 113 through the wiring port 114. The size and shape of the wire connection port 114 and the position of the first side plate 112 can be flexibly adjusted according to the requirement of wire connection. Moreover, if complex situations such as a large number of wires on the power source 130 and non-uniform positions occur, a plurality of wire connection ports 114 may be disposed on one first side plate 112 or a plurality of wire connection ports 114 may be disposed on a plurality of first side plates 112, respectively, so as to meet the wire connection requirements of the power source 130. However, if the opening of the wire connection port 114 is too large, a large gap may be left after the wire connection is completed, and the flame at the power supply 130 may be spread out of the first accommodation chamber 113 through the wire connection port 114. Therefore, it is also necessary to incorporate a top cover 120 to achieve further fire resistance.

The top cover 120 is another main structure of the fire retardant housing 100, the top cover 120 is connected with the upper cover 110, and the connection mode can be a clamping mode, that is, the connection mode is realized by adopting an elastic clamping piece such as a buckle and the like which are common in the technical field, so that the top cover 120 and the upper cover 110 are more firmly fixed and are convenient to detach. The top cover 120 has a second bottom plate 121 and a second side plate 122, and the second side plate 122 extends from the second bottom plate 121 to a direction away from the plane of the second bottom plate 121. Similarly, the second bottom plate 121 and the second side plate 122 are both plate-shaped structures, and their thickness dimensions are small and negligible compared to their other two dimensions. The second bottom plate 121 and the second side plate 122 are not coplanar, and one end of the second side plate 122 is fixed to the second bottom plate 121, which may be welded, glued, screwed, or the like, as is common in the art. The other end of the second side plate 122 extends out of the plane of the second bottom plate 121, and the extending direction is away from the second bottom plate 121. The second bottom plate 121 intersects the second side plate 122 and forms an included angle, so that the second bottom plate 121 and the second side plate 122 enclose a second accommodating cavity 123 for accommodating the upper cover 110. The second receiving chamber 123 does not need to play a role of a main flame blocking, and therefore, the second receiving chamber 123 may be semi-closed, and the number of the second side plates 122 is not limited. The included angle between the second side plate 122 and the second bottom plate 121 is not limited, and may be an acute angle, a right angle, or an obtuse angle. In the present embodiment, in order to enhance the fixing firmness between the second side plate 122 and the second bottom plate 121, the included angle is set to be a right angle, that is, the second side plate 122 is disposed perpendicular to the second bottom plate 121. In order to avoid scratching components inside the electronic device 10, rounded corners may be disposed at the connecting position of the second side plate 122 and the second bottom plate 121 to form smooth transition, and the appearance of the top cover 120 is also improved. The second bottom plate 121 and the second side plate 122 need to be made of fireproof materials, for example, the second bottom plate 121 and the second side plate 122 in this embodiment are made of PC engineering plastics, and have high plasticity, light weight, and flame retardancy.

In order to solve the above-mentioned problem that the flame at the power supply 130 is diffused to the outside of the first receiving chamber 113 through the wire port 114, a protrusion 124 for filling the wire port 114 is provided on the second bottom plate 121 at a position corresponding to the wire port 114. The protrusion 124 fills and seals the gap left after the wiring at the wiring port 114 is completed, as shown in fig. 4, so that the flame at the power source 130 can be prevented from spreading from the wiring port 114 to the outside of the first accommodating chamber 113. The size, shape, number of fittings, and the like of the projecting member 124 are set with reference to the wire connection port 114. Since the top cover 120 can accommodate the upper cover 110 therein, the protrusion 124 provided on the second bottom plate 121 of the top cover 120 can cover the wire connection port 114 at every position, ensuring that the gap on each wire connection port 114 is filled with the protrusion 124. Thus, the flame at the power supply 130 cannot spread, so that the fire retardant housing 100 in this embodiment has high fire-proof rating, safe use and wide application range.

Referring to fig. 2, in order to make the space of the first accommodating cavity 113 more compact and fix the power source 130 more firmly, the number of the first side plates 112 is four, and each first side plate 112 is respectively distributed around the first bottom plate 111 to form a closed first accommodating cavity 113. Like this, power 130 is located and all is equipped with first curb plate 112 around in the first chamber 113 that holds of confined, power 130, relies on first curb plate 112 to realize the separation to power 130 department flame, and the reliability is higher. The fixing manner between the four first side plates 112 is not limited, and may be welding, gluing, screwing, etc. which are common in the art. The shape formed by enclosing the four first side plates 112 is not limited, and may be any quadrilateral. In this embodiment, the four first side plates 112 enclose a rectangle, and have the same shape as the power source 130, so that the waste of space in the upper cover 110 can be minimized. At this time, at least one of the first side plates 112 is provided with a wiring port 114 for facilitating the wiring cable 150 of the power supply 130. The wire ports 114 may be formed in any one or more of the four first side plates 112.

Since the second bottom plate 121 in the top cover 120 needs to be made of PC engineering plastic in some cases in consideration of manufacturing process, use environment and the like, in order to further increase the safety factor of the fire retardant housing 100 of this embodiment in use, in some embodiments, the top cover 120 further includes a steel sheet, the shape of the steel sheet is the same as that of the second bottom plate 121, the size of the steel sheet is the same as that of the second bottom plate 121, and the steel sheet is embedded in the second bottom plate 121. During the production of the second bottom plate 121, a casting process may be used to directly embed the steel sheet into the second bottom plate 121. Like this, can all be covered by the steel sheet in the second bottom plate 121, after the power 130 of electronic equipment 10 catches fire, even take place the engineering plastics of second bottom plate 121 all impaired adverse circumstances, the existence of steel sheet also can ensure that flame can not break through the restriction of top cap 120 and stretch to the outside, has promoted the factor of safety of back-fire relief shell 100.

In another embodiment, the surface of the second bottom plate 121 facing the second receiving cavity 123 is coated with a fire-retardant coating. As noted above, to further enhance the fire retarding effect of top cover 120 to increase the safety factor of use of fire retardant housing 100 of this embodiment, a fire retardant coating may also be applied to the surface of second floor 121 facing second receiving cavity 123. The fireproof coating can reduce the flammability of the surface of the coated material, retard the flame propagation speed, and is a special coating for improving the fire endurance of the coated material. The fire protection principle of a fire protection coating is roughly: the fireproof coating is difficult to burn or not, so that the protected substrate is not directly contacted with air, and the ignition speed of the substrate is delayed. The fire-retardant coating has a low thermal conductivity, and can delay the transmission of flame temperature to the substrate, and the like. The fireproof coating can be divided into a water-based fireproof coating and a solvent-based fireproof coating according to different classification methods; or organic fire-resistant coatings, inorganic fire-resistant coatings, etc. There is no limitation on the kind, coating method, thickness, etc. of the fire-retardant coating layer.

As shown in fig. 2 and 3, in some embodiments, the first bottom plate 111 and the first side plate 112 are integrally formed; and the second bottom plate 121 and the second side plate 122 are integrally formed. The first bottom plate 111 and the first side plate 112, and the second bottom plate 121 and the second side plate 122 are integrally formed, so that the structure is more compact and firm without gaps, and flame can be blocked. In addition, the integrated forming process can reduce the processing procedures of the upper cover 110 and the top cover 120, thereby facilitating mass production, improving the production efficiency and reducing the production cost.

Referring to the requirements in the IEC62368 standard, when the assembly gap between the parts or components is greater than 1mm, there may be a case where the flame leaks out from the assembly gap position, and the V0 fire rating is not achieved. Thus, to increase the fire rating of firestop enclosure 100 in this embodiment, the fit gap between upper cover 110 and power source 130 may be less than 1mm, and the fit gap between top cover 120 and upper cover 110 may be less than 1 mm. Therefore, the flame at the power supply 130 cannot be transmitted out from the gap between the upper cover 110 and the top cover 120, and the fireproof performance is good and the safety factor is high.

Referring to fig. 5, the top cover 110 further includes a placement area 115 for placing the electronic device 140. That is, the placing region 115 is a space on the first base plate 111 except the first receiving cavity 113, and can be used for placing the electronic component 140. The first side plate 112 is a boundary between the first accommodating cavity 113 and the placing area 115, one side of the first side plate 112 is the first accommodating cavity 113, the other side of the first side plate 112 is the placing area 115, and the placing area 115 is formed by enclosing one side of the first side plate 112, which is away from the first accommodating cavity 113, and the first bottom plate 111. The size, shape, etc. of the placement area 115 are determined according to the size and number of the electronic components 140 to be mounted, and can be flexibly adjusted. It should be noted that the number of the placement areas 115 in the upper cover 110 may be one, or may be a plurality of placement areas distributed at different positions, and may be set according to actual use requirements.

In order to facilitate the installation and distribution of the internal electronic components 140, referring to fig. 5 and 6, the top cover 110 further includes a third bottom plate 116. The third bottom plate 116 is a plate-like structure, and the thickness dimension thereof is negligibly small compared with the dimensions in the other two directions. The third bottom plate 116 is disposed in the placement area 115, and the third bottom plate 116 is fixed to the first bottom plate 111 in an unlimited manner, which may be a welding, gluing, screwing, or the like manner commonly found in the art. The electronic component 140 is disposed on a surface of the third base plate 116. The types of electronic components 140 include, but are not limited to, resistors, capacitors, chips, sensors, and the like.

As shown in fig. 6, a bent portion 117 is disposed on a side of the third bottom plate 116 close to the first side plate 112, and the bent portion 117 extends toward the first bottom plate 111. Due to the existence of the bending part 117, and the bending part 117 extends towards the direction close to the first bottom plate 111, so that the third bottom plate 116 can be fixed with the first bottom plate 111 through the bending part 117, the surface space of the first bottom plate 111 is saved, flame which may be leaked from the first side plate 112 is blocked outside the bending part 117, the influence on the electronic element 140 on the third bottom plate 116 is avoided, and the fire retardant performance of the fire retardant housing 100 of the embodiment is further improved.

The embodiment of the present application also provides an electronic device 10, where the electronic device 10 includes the fire retardant housing 100 described in any one of the above. The electronic device 10 may be any mobile device, such as any one of a mobile phone, a tablet computer, a notebook computer, a personal digital assistant, a smart phone, a smart watch, and the like. In the use process of the electronic device 10 in this embodiment, the power supply 130 is completely wrapped in the first accommodating cavity 113 and the second accommodating cavity 123, so that the power supply 130 is protected, and flame generated at the power supply 130 can be blocked in all directions, even at the position of the wire connection port 114, due to the existence of the protruding member 124, the exposed space of the wire connection port 114 can be filled, and the flame can be prevented from being diffused from the wire connection port 114 to the outside. High fire-proof grade and safe use.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A firestop enclosure for blocking a flame at a power source, comprising:

the upper cover is provided with a first bottom plate and a first side plate, the first side plate extends from the first bottom plate to the direction away from the plane where the first bottom plate is located, the first bottom plate and the first side plate are enclosed to form a first containing cavity for containing the power supply, and the first side plate is provided with a wiring port;

the top cover is connected with the upper cover, the top cover is provided with a second bottom plate and a second side plate, the second side plate extends towards the direction deviating from the plane where the second bottom plate is located, the second bottom plate and the second side plate are surrounded to form a second containing cavity used for containing the upper cover, and a protruding part used for filling the wiring port is arranged at the position, corresponding to the wiring port, of the second bottom plate.

2. The firestop enclosure of claim 1,

the number of the first side plates is four, the first side plates are respectively distributed on the periphery of the first bottom plate to form a closed first accommodating cavity, and the wiring port is formed in at least one first side plate.

3. The firestop enclosure of claim 1,

the top cover further comprises a steel sheet, the shape of the steel sheet is the same as that of the second bottom plate, the size of the steel sheet is equal to that of the second bottom plate, and the steel sheet is embedded in the second bottom plate.

4. The firestop enclosure of claim 1,

and the surface of the second bottom plate facing the second accommodating cavity is coated with a fireproof coating.

5. The firestop enclosure of claim 1,

the first bottom plate and the first side plate are integrally formed;

the second bottom plate and the second side plate are integrally formed.

6. The firestop enclosure of claim 1,

the assembly clearance of upper cover with the power is less than 1mm, just the top cap with the assembly clearance of upper cover is less than 1 mm.

7. The firestop enclosure of claim 1,

the upper cover further comprises a placing area for placing electronic elements, and the placing area is formed by surrounding one side of the first side plate, which deviates from the first containing cavity, with the first bottom plate.

8. The firestop enclosure of claim 7,

the upper cover further comprises a third bottom plate, the third bottom plate is arranged in the placing area and fixed on the first bottom plate, and the electronic element is arranged on the surface of the third bottom plate.

9. The firestop enclosure of claim 8,

one side of the third bottom plate, which is close to the first side plate, is provided with a bending part, and the bending part extends towards the direction close to the first bottom plate.

10. An electronic device, comprising:

a firestop housing as claimed in any one of claims 1 to 9.