CN113993314A - Charger with safety protection function - Google Patents

Abstract

The application provides a charger with safety protection function, including casing, plug, PCB board and USB interface, plug and USB interface fixed connection are at the both ends of casing respectively, and PCB board fixed connection is inside the casing, and the charger with safety protection function still includes the baffle, and the baffle is the barrel form, and the PCB board is located the inside of baffle, baffle and casing fixed connection, baffle have insulating nature, and the baffle has the fire resistance, and the baffle has the gas permeability. The baffle adsorbs and blocks the high temperature liquid drop, avoids or reduces the high temperature liquid drop and splashes to the inner wall of casing to reduce the casing and take place the possibility of catching fire because of contacting the high temperature liquid drop, solved among the prior art circuit or electronic components on the PCB board after the short circuit lead to the molten metal liquid drop to splash to the inner wall of casing and arouse the problem of catching fire easily.

Description

Charger with safety protection function

Technical Field

The application relates to the technical field of chargers, in particular to a charger with a safety protection function.

Background

The mobile phone charger in the prior art generally comprises a shell, a plug, a PCB and a USB interface, wherein the plug and the USB interface are respectively and fixedly connected to two ends of the shell, the PCB is fixedly connected inside the shell, the plug and the USB interface are respectively and electrically connected with the PCB, the plug is plugged into a socket in the charging process, one end of a data line is plugged into the USB interface, and the other end of the data line is connected with a charging interface of a mobile phone. In the charging process, a circuit or an electronic component on the PCB board may be short-circuited due to water inflow or aging, sparks or splashed molten solder droplets or splashed molten wiring terminal droplets are easy to occur during short circuit, and once the splashed high-temperature droplets are adhered to the inner wall of the shell, the shell is easy to burn, and finally the charger catches fire.

Disclosure of Invention

The application provides a charger with safety protection function for circuit or electronic components short circuit on the PCB board among the solution prior art leads to easily after the molten metal liquid drop to splash to the inner wall of casing and arouse the problem of catching fire.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

the utility model provides a charger with safety protection function, includes casing, plug, PCB board and USB interface, the plug with the USB interface is fixed connection respectively in the both ends of casing, PCB board fixed connection is in inside the casing, charger with safety protection function still includes the baffle, the baffle is the barrel form, the PCB board is located the inside of baffle, the baffle with casing fixed connection, the baffle has insulating nature, the baffle has the fire resistance, the baffle has the gas permeability.

In some embodiments, the partition board includes a metal frame and an insulating layer, the metal frame is fixedly connected to the housing, the insulating layer covers the outer surface of the metal frame, and the metal frame is provided with air holes.

In some embodiments, the metal framework comprises a transverse metal wire and a longitudinal metal wire, the transverse metal wire is perpendicular to the longitudinal metal wire, the transverse metal wire is fixedly connected with the longitudinal metal wire, the transverse metal wire and the longitudinal metal wire are arranged in a grid shape, the air holes are formed by surrounding the transverse metal wire and the longitudinal metal wire, and the insulating layers are respectively coated on the outer surface of the transverse metal wire and the outer surface of the longitudinal metal wire.

In some embodiments, the transverse wires are elastic and the longitudinal wires are elastic.

In some embodiments, the transverse wires are made of stainless steel material or spring steel material and the longitudinal wires are made of stainless steel material or spring steel material.

In some embodiments, the insulating layer is made of a polyester imide material or a polyamide imide material.

In some embodiments, the arrangement pitch of the longitudinal wires is equal to the arrangement pitch of the transverse wires.

In some embodiments, the arrangement pitch of the longitudinal wires is equal to two times the width of the vent holes, the diameter of the longitudinal wires is equal to the diameter of the transverse wires, the thickness of the insulating layer coated on the longitudinal wires is equal to the thickness of the insulating layer coated on the transverse wires, the radius of the longitudinal wires is greater than two times the thickness of the insulating layer coated on the longitudinal wires, and the thickness of the insulating layer coated on the longitudinal wires is between 0.05 mm and 0.1 mm.

In some embodiments, the housing is cylindrical, the partition is cylindrical, a central axis of the partition and a central axis of the housing are located on the same straight line, and a diameter of the partition is smaller than a diameter of an inner wall of the housing.

In some embodiments, the charger with the safety protection function further includes a front end cover and a rear end cover, the front end cover is fixedly connected with one end of the housing, the rear end cover is fixedly connected with the other end of the housing, the plug is fixedly connected with the front end cover, the USB interface is fixedly connected with the rear end cover, and the PCB board is fixedly connected with the front end cover;

the baffle plate also comprises a front end fixing ring and a rear end fixing ring, the central axis of the front end fixing ring and the central axis of the shell are positioned on the same straight line, the front end fixing ring is detachably and fixedly connected with the front end cover, and one surface of the front end fixing ring, which is close to the rear end cover, is fixedly connected with one end of the baffle plate;

the central axis of the rear end fixing ring and the central axis of the shell are positioned on the same straight line, the rear end fixing ring is detachably and fixedly connected with the rear end cover, and one surface of the rear end fixing ring, which is close to the front end fixing ring, is fixedly connected with the other end of the partition plate;

a first mounting groove is formed in one surface, close to the rear end cover, of the front end cover, the first mounting groove is annular, the central axis of the first mounting groove and the central axis of the shell are located on the same straight line, the front end fixing ring is inserted into the first mounting groove in the direction parallel to the central axis of the shell, and the outer wall of the front end fixing ring is tightly matched with the inner wall of the first mounting groove;

a second mounting groove is formed in one surface, close to the front end cover, of the rear end cover, the second mounting groove is annular, the central axis of the second mounting groove and the central axis of the shell are located on the same straight line, the rear end fixing ring is inserted into the second mounting groove in the direction parallel to the central axis of the shell, and the outer wall of the rear end fixing ring is tightly matched with the inner wall of the second mounting groove;

the front end fixing ring is made of elastic rubber materials, and the rear end fixing ring is made of elastic rubber materials;

the longitudinal metal wire is parallel to the central axis of the shell, the transverse metal wire is perpendicular to the central axis of the shell, one end, close to the front end cover, of the longitudinal metal wire is fixedly connected with the front end fixing ring, and one end, close to the rear end cover, of the longitudinal metal wire is fixedly connected with the rear end fixing ring.

Has the advantages that:

the utility model provides a charger with safety protection function, in the use, circuit or electronic components on the PCB board take place the short circuit after, soldering tin or metal joint on contact or the solder joint melt and produce high temperature melting's liquid drop and splash to all around, the high temperature liquid drop that splashes back on the baffle, the baffle adsorbs and blocks the high temperature liquid drop, avoid or reduce the high temperature liquid drop and splash to the inner wall of casing on, thereby reduce the casing and take place the possibility of catching fire because of contacting the high temperature liquid drop, metal framework in the baffle can lead to the heat to disperse the conduction fast, avoid the heat to concentrate, thereby reduce local temperature, further reduce the possibility of catching fire, circuit or electronic components on the PCB board among the prior art splash and lead to the problem that the molten metal liquid drop arouses catching fire on the inner wall of casing easily.

Drawings

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

Fig. 1 is a schematic structural diagram of a charger with a safety protection function in an embodiment of the present application;

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

FIG. 3 is an exploded view of the housing in an embodiment of the present application;

FIG. 4 is a schematic view of the housing of FIG. 3 from another perspective;

fig. 5 is a partially enlarged sectional view of the separator in the embodiment of the present application.

Reference numerals:

101. a housing; 102. a plug; 103. a PCB board; 104. a USB interface; 105. a partition plate; 106. a metal skeleton; 107. an insulating layer; 108. air holes are formed; 109. a transverse wire; 110. a longitudinal wire; 111. a front end cover; 112. a rear end cap; 113. a front end fixing ring; 114. a rear end fixing ring; 115. a first mounting groove; 116. and a second mounting groove.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacted with the second feature or indirectly contacted with the second feature through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the terms "a particular example," "one embodiment," "an example," "some embodiments," "some examples," "some embodiments," or "possible embodiments," 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 an embodiment of the application. 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 and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 and fig. 2, in an embodiment of the present application, a charger with a safety protection function is provided, which includes a housing 101, a plug 102, a PCB 103, and a USB interface 104, where the plug 102 and the USB interface 104 are respectively fixedly connected to two ends of the housing 101, the PCB 103 is fixedly connected inside the housing 101, the charger with a safety protection function further includes a partition 105, the partition 105 is in a shape of a cylinder, the PCB 103 is located inside the partition 105, the partition 105 is fixedly connected to the housing 101, the partition 105 has an insulating property, the partition 105 has a flame retardant property, and the partition 105 has an air permeability.

The charger with the safety protection function provided by the embodiment, in the using process, after a circuit or an electronic component on the PCB 103 is short-circuited, soldering tin or a metal joint on a contact or a welding point is melted to generate high-temperature molten liquid drops and splashes around, the splashed high-temperature liquid drops are splashed onto the partition plate 105, the partition plate 105 adsorbs and blocks the high-temperature liquid drops, and the high-temperature liquid drops are prevented or reduced from splashing onto the inner wall of the shell 101, so that the possibility that the shell 101 catches fire due to the contact of the high-temperature liquid drops is reduced, and the problem that the circuit or the electronic component on the PCB 103 in the prior art is short-circuited and then the molten metal liquid drops are easily splashed onto the inner wall of the shell 101 to cause fire is solved.

Referring to fig. 1 to 5, in some embodiments, the partition plate 105 includes a metal frame 106 and an insulating layer 107, the metal frame 106 is fixedly connected to the housing 101, the insulating layer 107 covers an outer surface of the metal frame, and the metal frame 106 is provided with a vent 108.

With the above embodiment, the metal skeleton 106 in the partition plate 105 can disperse and conduct heat rapidly, avoiding heat concentration, thereby reducing local temperature and further reducing the possibility of fire; the insulating layer 107 can prevent the short circuit or the electric leakage caused by the direct contact between the circuit or the electronic component on the PCB 103 and the metal framework 106; the PCB 103 generates heat in the working process, the air inside the partition 105 absorbs the heat of the PCB 103 after contacting with the PCB 103 to form hot air, the hot air can pass through the air holes 108 to move into the space between the shell 101 and the partition 105, and exchanges heat with the cold air between the inner wall of the shell 101 and the partition 105, so that the temperature in the space inside the partition 105 is reduced, and the heat dissipation performance of the charger with the safety protection function is improved.

In some embodiments, the metal framework 106 includes transverse wires 109 and longitudinal wires 110, the transverse wires 109 are perpendicular to the longitudinal wires 110, the transverse wires 109 are fixedly connected to the longitudinal wires 110, the transverse wires 109 and the longitudinal wires 110 are arranged in a grid, the ventilation holes 108 are formed by surrounding the transverse wires 109 and the longitudinal wires 110, and the insulating layer 107 is respectively coated on the outer surfaces of the transverse wires 109 and the outer surfaces of the longitudinal wires 110.

With the above embodiment, the longitudinal wires 110 and the transverse wires 109 are arranged in a grid pattern, and the longitudinal wires 110 and the transverse wires 109 are drawn and supported by each other, thereby improving the overall structural stability of the separator 105 and providing better flexibility as a whole.

In some embodiments, the transverse wires 109 are elastic and the longitudinal wires 110 are elastic.

Through the above embodiment, the transverse wire 109 and the longitudinal wire 110 can automatically restore to the original shape after being squeezed or collided, the transverse wire 109 and the longitudinal wire 110 are pulled and supported by each other after the housing 101 is violently collided, the transverse wire 109 and the longitudinal wire 110 are bent and deformed to contact the PCB 103 under the action of an excessive acceleration, after the collision is finished, the acceleration disappears or is reduced to a safety value or below, and the transverse wire 109 and the longitudinal wire 110 are respectively pulled by each other under the action of self elasticity to automatically restore to the original shape.

In some embodiments, the transverse wires 109 are made of stainless steel material or spring steel material and the longitudinal wires 110 are made of stainless steel material or spring steel material.

With the above embodiment, preferably, the transverse wires 109 are made of stainless steel material, and the longitudinal wires 110 are made of stainless steel material, so that the transverse wires 109 and the transverse wires 109 have good corrosion resistance and good flexibility, and can avoid permanent deformation after being pressed.

In some embodiments, the insulating layer 107 is made of a polyester imide material or a polyamide imide material.

Through the embodiment, the polyesterimide material is a common insulating material for the surface of the enameled wire, has the advantages of high temperature resistance, good insulating property and the like, the thickness of the polyester imide material coated on the surfaces of the transverse metal wire 109 and the longitudinal metal wire 110 can be very thin, the heat exchange efficiency between the longitudinal metal wire 110 and the transverse metal wire 109 and the air is improved, and meanwhile, the polyester imide material can have good insulating property.

In some embodiments, the pitch of the longitudinal wires 110 is equal to the pitch of the transverse wires 109.

With the above embodiment, the ventilation holes 108 are in a grid shape, and after the transverse wires 109 and the longitudinal wires 110 are subjected to the extrusion force, the peripheral edges of the ventilation holes 108 are subjected to more uniform force, so that the parallelism between the deformation direction and the radial direction of the shell 101 is higher.

In some embodiments, the arrangement pitch of the longitudinal wires 110 is equal to twice the width of the ventilation holes 108, the diameter of the longitudinal wires 110 is equal to the diameter of the transverse wires 109, the thickness of the insulating layer 107 coated on the longitudinal wires 110 is equal to the thickness of the insulating layer 107 coated on the transverse wires 109, the radius of the longitudinal wires 110 is greater than twice the thickness of the insulating layer 107 coated on the longitudinal wires 110, and the thickness of the insulating layer 107 coated on the longitudinal wires 110 is between 0.05 mm and 0.1 mm.

In some embodiments, the housing 101 is cylindrical, the partition 105 is cylindrical, a central axis of the partition 105 is aligned with a central axis of the housing 101, and a diameter of the partition 105 is smaller than a diameter of an inner wall of the housing 101.

In some embodiments, the charger with the safety protection function further includes a front cover 111 and a rear cover 112, the front cover 111 is fixedly connected with one end of the housing 101, the rear cover 112 is fixedly connected with the other end of the housing 101, the plug 102 is fixedly connected with the front cover 111, the USB interface 104 is fixedly connected with the rear cover 112, and the PCB 103 is fixedly connected with the front cover 111; the partition plate 105 further comprises a front end fixing ring 113 and a rear end fixing ring 114, the central axis of the front end fixing ring 113 and the central axis of the shell 101 are located on the same straight line, the front end fixing ring 113 is detachably and fixedly connected with the front end cover 111, and one surface, close to the rear end cover 112, of the front end fixing ring 113 is fixedly connected with one end of the partition plate 105; the central axis of the rear end fixing ring 114 and the central axis of the shell 101 are positioned on the same straight line, the rear end fixing ring 114 is detachably and fixedly connected with the rear end cover 112, and one surface of the rear end fixing ring 114 close to the front end fixing ring 113 is fixedly connected with the other end of the partition plate 105; a first mounting groove 115 is formed in one surface, close to the rear end cover 112, of the front end cover 111, the first mounting groove 115 is annular, a central axis of the first mounting groove 115 and a central axis of the shell 101 are located on the same straight line, the front end fixing ring 113 is inserted into the first mounting groove 115 along a direction parallel to the central axis of the shell 101, and the outer wall of the front end fixing ring 113 is tightly matched with the inner wall of the first mounting groove 115; a second mounting groove 116 is formed in one surface, close to the front end cover 111, of the rear end cover 112, the second mounting groove 116 is annular, a central axis of the second mounting groove 116 and a central axis of the shell 101 are located on the same straight line, the rear end fixing ring 114 is inserted into the second mounting groove 116 along a direction parallel to the central axis of the shell 101, and the outer wall of the rear end fixing ring 114 is tightly matched with the inner wall of the second mounting groove 116; the front end fixing ring 113 is made of an elastic rubber material, and the rear end fixing ring 114 is made of an elastic rubber material; the longitudinal metal wire 110 is parallel to the central axis of the casing 101, the transverse metal wire 109 is perpendicular to the central axis of the casing 101, one end of the longitudinal metal wire 110 close to the front end cover 111 is fixedly connected with the front end fixing ring 113, and one end of the longitudinal metal wire 110 close to the rear end cover 112 is fixedly connected with the rear end fixing ring 114.

Through the above embodiment, the front end fixing ring 113 and the rear end fixing ring 114 can respectively support and fix two ends of the partition plate 105, and the partition plate 105 is also convenient to mount on the casing 101, because the front end fixing ring 113 and the rear end fixing ring 114 have elasticity and insulativity, therefore, the partition plate 105 can be buffered and damped when the casing 101 is severely impacted, and meanwhile, the metal framework 106 is prevented from conducting electricity to the front end cover 111 or the rear end cover 112 after conducting electricity, the front end cover 111 and the rear end cover 112 are cracked and enter the conducting medium in the cracks, the front end fixing ring 113 and the rear end fixing ring 114 can prevent the metal framework 106 from contacting the conducting medium, and the safety of the charger with the safety protection function is improved.

The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The utility model provides a charger with safety protection function, includes casing, plug, PCB board and USB interface, the plug with the USB interface is fixed connection respectively in the both ends of casing, PCB board fixed connection is in inside the casing, its characterized in that, charger with safety protection function still includes the baffle, the baffle is the barrel form, the PCB board is located the inside of baffle, the baffle with casing fixed connection, the baffle has insulating nature, the baffle has the fire resistance, the baffle has the gas permeability.

2. The charger with safety protection function as claimed in claim 1, wherein the partition comprises a metal frame and an insulating layer, the metal frame is fixedly connected with the housing, the insulating layer covers the outer surface of the metal frame, and the metal frame is provided with air holes.

3. The charger with the safety protection function as claimed in claim 2, wherein the metal framework comprises a transverse metal wire and a longitudinal metal wire, the transverse metal wire is perpendicular to the longitudinal metal wire, the transverse metal wire is fixedly connected with the longitudinal metal wire, the transverse metal wire and the longitudinal metal wire are arranged in a grid shape, the air holes are formed by surrounding the transverse metal wire and the longitudinal metal wire, and the insulating layers are respectively coated on the outer surface of the transverse metal wire and the outer surface of the longitudinal metal wire.

4. The charger with safety protection function as claimed in claim 3, wherein the transverse wires are elastic and the longitudinal wires are elastic.

5. The charger with safety protection function as claimed in claim 4, wherein the transverse wires are made of stainless steel material or spring steel material, and the longitudinal wires are made of stainless steel material or spring steel material.

6. The charger with safety protection function as claimed in claim 5, wherein the insulating layer is made of a polyester imide material or a polyamide imide material.

7. The charger according to claim 3, wherein the arrangement pitch of the longitudinal wires is equal to the arrangement pitch of the transverse wires.

8. The charger with safety protection function as claimed in claim 7, wherein the arrangement pitch of the longitudinal wires is equal to twice the width of the vent holes, the diameter of the longitudinal wires is equal to the diameter of the transverse wires, the thickness of the insulating layer coated on the longitudinal wires is equal to the thickness of the insulating layer coated on the transverse wires, the radius of the longitudinal wires is greater than twice the thickness of the insulating layer coated on the longitudinal wires, and the thickness of the insulating layer coated on the longitudinal wires is between 0.05 mm and 0.1 mm.

9. The charger with safety protection function as claimed in any one of claims 3 to 8, wherein the housing is cylindrical, the partition is cylindrical, a central axis of the partition is aligned with a central axis of the housing, and a diameter of the partition is smaller than a diameter of an inner wall of the housing.

10. The charger with safety protection function as claimed in claim 9, further comprising a front end cap and a rear end cap, wherein the front end cap is fixedly connected to one end of the housing, the rear end cap is fixedly connected to the other end of the housing, the plug is fixedly connected to the front end cap, the USB interface is fixedly connected to the rear end cap, and the PCB board is fixedly connected to the front end cap.

The baffle still includes the solid fixed ring of front end and rear end retaining ring, the solid fixed ring's of front end axis with the axis of casing is located same straight line, the solid fixed ring of front end with the detachable fixed connection of front end cover, the front end retaining ring is close to the one side of rear end cover with the wherein one end fixed connection of baffle.

The central axis of the rear end fixing ring and the central axis of the shell are positioned on the same straight line, the rear end fixing ring is detachably and fixedly connected with the rear end cover, and one surface of the rear end fixing ring, which is close to the front end fixing ring, is fixedly connected with the other end of the partition plate;

a first mounting groove is formed in one surface, close to the rear end cover, of the front end cover, the first mounting groove is annular, the central axis of the first mounting groove and the central axis of the shell are located on the same straight line, the front end fixing ring is inserted into the first mounting groove in the direction parallel to the central axis of the shell, and the outer wall of the front end fixing ring is tightly matched with the inner wall of the first mounting groove;

a second mounting groove is formed in one surface, close to the front end cover, of the rear end cover, the second mounting groove is annular, the central axis of the second mounting groove and the central axis of the shell are located on the same straight line, the rear end fixing ring is inserted into the second mounting groove in the direction parallel to the central axis of the shell, and the outer wall of the rear end fixing ring is tightly matched with the inner wall of the second mounting groove;

the front end fixing ring is made of elastic rubber materials, and the rear end fixing ring is made of elastic rubber materials;

the longitudinal metal wire is parallel to the central axis of the shell, the transverse metal wire is perpendicular to the central axis of the shell, one end, close to the front end cover, of the longitudinal metal wire is fixedly connected with the front end fixing ring, and one end, close to the rear end cover, of the longitudinal metal wire is fixedly connected with the rear end fixing ring.

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