CN111465245B - Terminal protection device - Google Patents

Terminal protection device Download PDF

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Publication number
CN111465245B
CN111465245B CN202010243941.3A CN202010243941A CN111465245B CN 111465245 B CN111465245 B CN 111465245B CN 202010243941 A CN202010243941 A CN 202010243941A CN 111465245 B CN111465245 B CN 111465245B
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China
Prior art keywords
spring
dry powder
shell
plate
cavity
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CN202010243941.3A
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CN111465245A (en
Inventor
曾晓丹
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Guangdong Power Grid Co Ltd
Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202010243941.3A priority Critical patent/CN111465245B/en
Publication of CN111465245A publication Critical patent/CN111465245A/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/14Mounting supporting structure in casing or on frame or rack
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C13/00Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/006Portable extinguishers which are permanently pressurised or pressurised immediately before use for the propulsion of extinguishing powder
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C13/00Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/02Portable extinguishers which are permanently pressurised or pressurised immediately before use with pressure gas produced by chemicals
    • A62C13/04Portable extinguishers which are permanently pressurised or pressurised immediately before use with pressure gas produced by chemicals with separate acid container
    • A62C13/16Portable extinguishers which are permanently pressurised or pressurised immediately before use with pressure gas produced by chemicals with separate acid container with movable acid container ruptured by falling when operated
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C13/00Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/76Details or accessories
    • A62C13/78Suspending or supporting devices
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The embodiment of the invention discloses a terminal protection device which is used for fire prevention and comprises a first shell, a second shell and a herringbone top, wherein the first shell is of a cuboid structure with a downward opening, the second shell is of a cuboid structure with an upward opening, and the first shell is arranged above the second shell; the first shell and the second shell form a cavity; the herringbone roof is fixedly connected with the top of the first shell; an inner box is arranged in the cavity, the inner box is of a cuboid structure, and two side surfaces of the inner box are respectively provided with a first dry powder box; the top and the bottom of the inner box are respectively provided with a second dry powder box; a first ejector rod is arranged between the inner side wall of the cavity and the first dry powder box; a second ejector rod is arranged between the inner side wall of the cavity and the second dry powder box; when the device receives external force, the first ejector rod and the second ejector rod burst the first dry powder box and the second dry powder box around the inner box, and the dry powder covers the electronic elements of the inner box to prevent the inner box from catching fire.

Description

Terminal protection device
Technical Field
The invention relates to the technical field of electric power, in particular to a terminal protection device.
Background
Terminals, in particular terminals in the power domain, such as the code terminal system (ES) in the OSI network domain, refer to hosts in an OSI network, and a key concept for another in an OSI network IS the Intermediate System (IS), which refers to routers and switches, which transmit information over the network.
At present, the existing terminal system devices have the following disadvantages: the device has no protection function, and when the device is damaged, the device is easy to catch fire, so that danger is caused.
Disclosure of Invention
The invention aims to provide a terminal protection device which is used for conveniently realizing fire prevention.
In order to achieve the purpose, the invention adopts the following technical scheme: a terminal protection device comprises a first shell, a second shell and a herringbone top, wherein the first shell is of a cuboid structure with a downward opening, the second shell is of a cuboid structure with an upward opening, and the first shell is arranged above the second shell; the first shell and the second shell form a cavity; the herringbone roof is fixedly connected with the top of the first shell;
an inner box is arranged in the cavity, the inner box is of a cuboid structure, and two side surfaces of the inner box are respectively provided with a first dry powder box; the top and the bottom of the inner box are respectively provided with a second dry powder box; a first ejector rod is arranged between the inner side wall of the cavity and the first dry powder box; a second ejector rod is arranged between the inner side wall of the cavity and the second dry powder box; when the device is subjected to external pressure, the first ejector rod is used for bursting the first dry powder box; the second ejector pin is used for bursting the second dry powder box.
Optionally, a first spring is arranged between the inner side wall of the cavity and the first dry powder box; one end of the first spring is fixed on the inner side wall of the cavity; the other end of the first spring is fixed on the first dry powder box.
Optionally, the number of the first springs is two; the two first springs are respectively arranged on two sides of the first ejector rod.
Optionally, a spring assembly is arranged between the inner side wall of the cavity and the second dry powder box; the spring assembly comprises a slide rail, a slide block, a second spring and a first connecting rod; the sliding rail is provided with a groove with a downward opening, the groove is provided with a cross rod, and the sliding block is connected with the cross rod in a sliding manner; one side of the sliding block is fixedly connected with the second spring; the second spring is sleeved on the cross rod; one end of the first connecting rod is fixedly connected with one side of the sliding block, which is far away from the second spring; the other end of the first connecting rod is hinged with the side surface of the second dry powder box; and the two sides of the second dry powder box are respectively provided with the spring assembly.
Optionally, a lightning protection area is further disposed in the cavity, and the lightning protection area includes a lightning protection plate, a conductive plate, a movable plate and a fixed plate; the lightning protection plate is arranged on the fixing plate; one side of the fixed plate, which is far away from the lightning protection plate, is connected with the movable plate; the conducting plate is arranged at the bottom of the movable plate.
Optionally, an elastic element is arranged at the top end of the lightning protection plate, a fixed block is welded on one side of the elastic element, and a welding spot is arranged at the welding position of the fixed block and the lightning protection plate; a guide rod piece is arranged on one side, far away from the welding spot, of the fixed block and is connected with a third spring, and one side, far away from the guide rod piece, of the third spring is fixedly connected with a second connecting rod; one end of the second connecting rod, which is far away from the guide rod piece, vertically extends through the fixed plate and is fixedly connected with the movable plate; and a fourth spring is sleeved on the outer wall of the second connecting rod, and one end of the fixed plate and one end of the limiting part are fixedly connected with the fourth spring.
Optionally, a discharge tube is arranged inside the lightning protection plate, a temperature sensor is arranged at the bottom of the discharge tube, and an audible and visual alarm is arranged at the top of the first shell; the temperature sensor is electrically connected with the audible and visual alarm.
Optionally, a vent is arranged at an interface between the first housing and the second housing, and a first side plate extending outwards is arranged on one side of the first housing close to the vent; one side of the second shell, which is close to the ventilation opening, is provided with a second side plate which extends outwards; the bottom of the first side plate is hinged with a third connecting rod; a fifth spring is arranged between the inner wall of the third connecting rod and the inner wall of the ventilation opening; and a sponge block is arranged on one side of the third connecting rod, which is far away from the fifth spring.
Optionally, the number of the ventilation openings is two, and the two ventilation openings are respectively arranged at two interfaces at two sides of the first shell and the second shell.
The invention has the beneficial effects that: the embodiment of the invention provides a terminal protection device, which comprises a first shell, a second shell and a herringbone top, wherein the first shell is of a cuboid structure with a downward opening, the second shell is of a cuboid structure with an upward opening, and the first shell is arranged above the second shell; the first shell and the second shell form a cavity; the herringbone roof is fixedly connected with the top of the first shell; an inner box is arranged in the cavity, the inner box is of a cuboid structure, and two side surfaces of the inner box are respectively provided with a first dry powder box; the top and the bottom of the inner box are respectively provided with a second dry powder box; a first ejector rod is arranged between the inner side wall of the cavity and the first dry powder box; a second ejector rod is arranged between the inner side wall of the cavity and the second dry powder box; when the device is subjected to external pressure, the first ejector rod is used for bursting the first dry powder box; the second ejector pin is used for bursting the second dry powder box.
Through set up dry powder box and ejector pin around at the inner box, when the device received external force, the ejector pin broke inner box first dry powder box and second dry powder box all around, and the dry powder that flows from first dry powder box and second dry powder box covers inner box electronic component, prevents that the inner box from catching fire, plays the guard action.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic overall structure diagram of a terminal protection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an outer frame of a terminal protection device according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of a third spring of the terminal protection device according to the embodiment of the present invention;
fig. 4 is a partial enlarged view of a spring assembly of a terminal protection device according to an embodiment of the present invention.
In the figure: 1. a first housing; 2. a second housing; 3. a herringbone top; 4. a cavity; 5. an inner box; 6. a first dry powder cartridge; 7. a second dry powder cartridge; 8. a first ejector rod; 9. a second ejector rod; 10. a first spring; 11. a spring assembly; 111. a slide rail; 112. a slider; 113. a second spring; 114. a first link; 115. a cross bar;
12. a lightning protection zone; 121. a lightning protection plate; 122. a conductive plate; 123. a movable plate; 124. a fixing plate; 125. an elastic member; 126. a fixed block; 127. welding spots; 128. a guide bar member; 129. a third spring; 1210. a second link; 1211. a fourth spring; 1212. a limiting member; 1213. a discharge tube; 1214. a temperature sensor; 1215. an audible and visual alarm;
13. a vent; 131. a first side plate; 132. a second side plate; 133. a third link; 134. a fifth spring; 135. a sponge block.
Detailed Description
The embodiment of the invention provides a terminal protection device which is used for conveniently realizing fire prevention.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an overall structure of a terminal protection device according to an embodiment of the present invention; the terminal protection device comprises a first shell 1, a second shell 2 and a herringbone roof 3, wherein the first shell 1 is of a cuboid structure with a downward opening, the second shell 2 is of a cuboid structure with an upward opening, and the first shell 1 is arranged above the second shell 2; the first shell 1 and the second shell 2 form a cavity 4; the herringbone top 3 is fixedly connected with the top of the first shell 1;
an inner box 5 is arranged in the cavity 4, the inner box 5 is of a cuboid structure, and two side surfaces of the inner box 5 are respectively provided with a first dry powder box 6; the top and the bottom of the inner box 5 are respectively provided with a second dry powder box 7; a first ejector rod 8 is arranged between the inner side wall of the cavity 4 and the first dry powder box 6; a second ejector rod 9 is arranged between the inner side wall of the cavity 4 and the second dry powder box 7; when the device is subjected to external pressure, the first ejector rod 8 is used for bursting the first dry powder box 6; the second top bar 9 is used for breaking the second dry powder box 7.
Specifically, when the device receives external force too big, first ejector pin 8 and second ejector pin 9 burst interior case first dry powder box 6 and second dry powder box 7 all around, and the dry powder covers interior case electronic component, prevents that the interior case from catching fire, and this structure plays the fire prevention function to the interior case.
Further, a first spring 10 is arranged between the inner side wall of the cavity 4 and the first dry powder box 6; one end of the first spring 10 is fixed on the inner side wall of the cavity 4; the other end of the first spring 10 is fixed on the first dry powder box 6.
Specifically, set up first spring 10 on first dry powder box 6 and cavity 4 inside wall, can be so that when the device received external force, the spring compression plays the effect of buffering to the impulsive force, can play the guard action to inner box 6.
Further, the number of the first springs 10 is two; the two first springs 10 are respectively arranged at two sides of the first ejector rod 8.
Specifically, first spring 10 locates the both sides of first ejector pin respectively, and first spring 10 locates between first dry powder box 6 and the 4 inside walls of cavity, can be so that when the device received external force, the spring compression can reduce the impact force, realizes the buffering, can play the guard action to inner box 5.
Further, a spring assembly 11 is arranged between the inner side wall of the cavity 4 and the second dry powder box 7; the spring assembly 11 comprises a slide rail 111, a slide block 112, a second spring 113 and a first connecting rod 114; the slide rail 111 is provided with a groove with a downward opening, the groove is provided with a cross rod 115, and the slide block 112 is connected with the cross rod 116 in a sliding manner; one side of the sliding block 112 is fixedly connected with the second spring 113; the second spring 113 is sleeved on the cross rod 115; one end of the first link 114 is fixedly connected with one side of the sliding block 112 away from the second spring 113; the other end of the first link 114 is hinged with the side surface of the second dry powder box 7; and the two sides of the second dry powder box 7 are respectively provided with the spring components 11.
Specifically, when the device receives external force, first spring 10 warp, makes second spring 113 take place deformation under the cooperation of first link 114 and slide rail 111 simultaneously, can reduce the buffering, prevents that inner box 5 from damaging, and this structure has realized the shock-absorbing function of device.
Further, a lightning protection area 12 is further disposed in the cavity 4, and the lightning protection area 12 includes a lightning protection plate 121, a conductive plate 122, a movable plate 123 and a fixed plate 124; the lightning protection plate 121 is arranged on the fixing plate 124; the side of the fixed plate 124 away from the lightning protection plate 121 is connected to the movable plate 123; the conductive plate 122 is disposed at the bottom of the movable plate 123.
Specifically, the lightning protection sheet may be used to protect against lightning, conducting the lightning away from the conductive sheet.
Furthermore, an elastic element 125 is arranged at the top end of the lightning protection plate 121, a fixing block 126 is welded to one side of the elastic element 125, and a welding point 127 is arranged at the welding position of the fixing block 126 and the lightning protection plate 121; a guide rod piece 128 is arranged on one side of the fixed block 126, which is far away from the welding point 127, the guide rod piece 128 is connected with a third spring 129, and one side of the third spring 129, which is far away from the guide rod piece 128, is fixedly connected with a second connecting rod 1210; one end of the second connecting rod 1210, which is away from the guide rod 128, vertically extends through the fixed plate 124 and the movable plate 123 for fixed connection; a fourth spring 1211 is sleeved on an outer wall of the second connecting rod 1210, and one end of the fourth spring 1211, which is far away from the fixing plate 124, is fixedly connected to the limiting member 1212.
Specifically, when lightning strikes and the temperature is too high, the welding point 127 of the fixed block 126 and the lightning protection plate 121 melts, the fixed block 126 is separated from the lightning protection plate 121 under the action of the elastic member 125, the guide rod member 128 is separated from the limitation on the second connecting rod 1210 under the action of the third spring 129, and the second connecting rod 1210 is separated from the movable plate 123 by matching with the fourth spring 1211, so that the movable plate 123 is disconnected from the conductive plate 122 immediately.
Further, a discharge tube 1213 is arranged inside the lightning protection plate 121, a temperature sensor 1214 is arranged at the bottom of the discharge tube 1213, and an audible and visual alarm 1215 is arranged at the top of the first casing 1; the temperature sensor 1214 is electrically connected to the audible and visual alarm 1215.
Specifically, a discharge tube 1213 is disposed inside the lightning protection plate 121, and a temperature sensor 1214 is mounted at the bottom of the discharge tube 1213, where the temperature sensor 1214 may be of WRM-101 type; the audible and visual alarm 10 may be of the type LTE-1101.
When lightning strikes, the device is struck by lightning and the temperature is high, when the temperature of the discharge tube 1213 is higher than a preset value, the temperature sensor 1214 receives a signal and transmits the signal, and meanwhile, the audible and visual alarm 10 gives an alarm, so that the structure realizes real-time monitoring on the device.
Further, a vent 13 is arranged at the interface between the first housing 1 and the second housing 2, and a first side plate 131 extending outwards is arranged on one side of the first housing 1 close to the vent 13; a second side plate 132 extending outwards is arranged on one side of the second shell 2 close to the ventilation opening; the bottom of the first side plate 131 is hinged with a third connecting rod 133; a fifth spring 134 is installed between the inner wall of the third link 133 and the inner wall of the vent 13; a sponge block 135 is arranged on one side of the third connecting rod 133 far away from the fifth spring 134.
In a specific embodiment, when raining, the herringbone roof 3 can prevent the device from directly contacting with rainwater, rainwater flows down and splashes to the sponge block 135, the weight of the sponge block 135 is increased, the third connecting rod 133 compresses the fifth spring 134, the vent 13 can be blocked, rainwater is prevented from entering the device, when the device is sunny, rainwater in the sponge block 135 evaporates, the fifth spring bounces off the third connecting rod 133, namely, the airflow can be introduced into the device, and the functions of rain prevention, moisture prevention and ventilation of the device are achieved.
Further, the number of the ventilation openings 13 is two, and the two ventilation openings 13 are respectively arranged at two interfaces at two sides of the first shell 1 and the second shell 2.
In the embodiment, the number of the ventilation openings is two, each ventilation opening has the same structural design, when raining, the herringbone roof 3 can prevent the device from directly contacting with rainwater, the rainwater circulates from two sides, when the rainwater splashes to the sponge block 135, the weight of the sponge block 135 is increased, so that the third connecting rod 133 compresses the fifth spring 134, the ventilation opening 13 can be blocked, the rainwater is prevented from entering the device, when the rainwater in the sponge block 135 evaporates in sunny days, the fifth spring 134 bounces off the third connecting rod 133, namely, the airflow is introduced into the device, and convection ventilation can be realized through the ventilation openings.
In a specific embodiment, when the terminal protection device is used, the terminal system is firstly installed in the inner box 5, when raining, the herringbone roof 3 can prevent the device from directly contacting with rainwater, the rainwater circulates from two sides, when the rainwater splashes to the sponge block 135, the weight of the sponge block 135 is increased, so that the third connecting rod 133 compresses the fifth spring 134, the vent 13 can be blocked, the rainwater enters the device, when the rainwater in the sponge block 135 evaporates in a sunny day, the fifth spring 134 bounces off the third connecting rod 133, namely, the air can flow into the device, and the ventilation effect is achieved.
When the device receives external force, first spring 10 warp, and second spring 27 can take place deformation under the cooperation of first link 114 and slide rail 111 simultaneously, reduces the buffering, prevents that inner box 5 is impaired, and when the atress is too big, the shock attenuation is impaired, prevents that inner box 5 from catching fire, and the ejector pin breaks inner box 5 first dry powder box 6 and second dry powder box 7 all around, and the electronic component in the inner box 5 is covered to the dry powder, plays the effect of fire prevention.
When lightning strikes and the temperature is too high, the welding point 127 of the fixed block 126 and the lightning protection plate 121 is melted, the fixed block 126 is separated from the lightning protection plate 121 under the action of the elastic member 125, the guide rod member 128 is separated from the limit of the second connecting rod 1210 under the action of the third spring 129, and the second connecting rod 1210 is separated from the movable plate 123 by matching with the fourth spring 1211, so that the movable plate 123 is disconnected from the conductive plate 122, and the lightning protection of the device is realized by the structure.
In summary, an embodiment of the present invention provides a terminal protection device, including a first housing, a second housing, and a herringbone roof, where the first housing is a rectangular parallelepiped structure with a downward opening, the second housing is a rectangular parallelepiped structure with an upward opening, and the first housing is installed above the second housing; the first shell and the second shell form a cavity; the herringbone roof is fixedly connected with the top of the first shell; an inner box is arranged in the cavity, the inner box is of a cuboid structure, and two side surfaces of the inner box are respectively provided with a first dry powder box; the top and the bottom of the inner box are respectively provided with a second dry powder box; a first ejector rod is arranged between the inner side wall of the cavity and the first dry powder box; a second ejector rod is arranged between the inner side wall of the cavity and the second dry powder box; when the device is subjected to external pressure, the first ejector rod is used for bursting the first dry powder box; the second ejector pin is used for bursting the second dry powder box.
Through set up dry powder box and ejector pin around at the inner box, when the device received external force, the ejector pin broke inner box first dry powder box and second dry powder box all around, and the dry powder that flows from first dry powder box and second dry powder box covers inner box electronic component, prevents that the inner box from catching fire, plays the guard action.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. A terminal protection device is characterized by comprising a first shell, a second shell and a herringbone roof, wherein the first shell is of a cuboid structure with a downward opening, the second shell is of a cuboid structure with an upward opening, and the first shell is arranged above the second shell; the first shell and the second shell form a cavity; the herringbone roof is fixedly connected with the top of the first shell;
an inner box is arranged in the cavity, the inner box is of a cuboid structure, and two side surfaces of the inner box are respectively provided with a first dry powder box; the top and the bottom of the inner box are respectively provided with a second dry powder box; a first ejector rod is arranged between the inner side wall of the cavity and the first dry powder box; a second ejector rod is arranged between the inner side wall of the cavity and the second dry powder box;
when the terminal protection device is subjected to external pressure, the first ejector rod is used for bursting the first dry powder box, and the second ejector rod is used for bursting the second dry powder box;
a lightning protection area is also arranged in the cavity and comprises a lightning protection plate, a conductive plate, a movable plate and a fixed plate; the lightning protection plate is arranged on the fixing plate; one side of the fixed plate, which is far away from the lightning protection plate, is connected with the movable plate; the conducting plate is arranged at the bottom of the movable plate; the top end of the lightning protection plate is provided with an elastic part, one side of the elastic part is welded with a fixed block, and a welding spot is arranged at the welding position of the fixed block and the lightning protection plate; a guide rod piece is arranged on one side, far away from the welding spot, of the fixed block and is connected with a third spring, and one side, far away from the guide rod piece, of the third spring is fixedly connected with a second connecting rod; one end of the second connecting rod, which is far away from the guide rod piece, vertically extends through the fixed plate and is fixedly connected with the movable plate; and a fourth spring is sleeved on the outer wall of the second connecting rod, and one end of the fixed plate and one end of the limiting part are fixedly connected with the fourth spring.
2. The terminal protection device according to claim 1, wherein a first spring is disposed between an inner sidewall of the cavity and the first dry powder cartridge; one end of the first spring is fixed on the inner side wall of the cavity; the other end of the first spring is fixed on the first dry powder box.
3. The terminal protection device according to claim 2, wherein the first springs are two; the two first springs are respectively arranged on two sides of the first ejector rod.
4. The terminal protection device according to claim 1, wherein a spring assembly is disposed between the inner sidewall of the cavity and the second dry powder cartridge; the spring assembly comprises a slide rail, a slide block, a second spring and a first connecting rod; the sliding rail is provided with a groove with a downward opening, the groove is provided with a cross rod, and the sliding block is connected with the cross rod in a sliding manner; one side of the sliding block is fixedly connected with the second spring; the second spring is sleeved on the cross rod; one end of the first connecting rod is fixedly connected with one side of the sliding block, which is far away from the second spring; the other end of the first connecting rod is hinged with the side surface of the second dry powder box; and the two sides of the second dry powder box are respectively provided with the spring assembly.
5. The terminal protection device according to claim 1, wherein a discharge tube is arranged inside the lightning protection plate, a temperature sensor is arranged at the bottom of the discharge tube, and an audible and visual alarm is arranged at the top of the first shell; the temperature sensor is electrically connected with the audible and visual alarm.
6. The terminal protection device according to claim 1, wherein a vent is provided at an interface between the first housing and the second housing, and a first side plate extending outwards is provided at a side of the first housing close to the vent; one side of the second shell, which is close to the ventilation opening, is provided with a second side plate which extends outwards; the bottom of the first side plate is hinged with a third connecting rod; a fifth spring is arranged between the inner wall of the third connecting rod and the inner wall of the ventilation opening; and a sponge block is arranged on one side of the third connecting rod, which is far away from the fifth spring.
7. The terminal protection device according to claim 1, wherein the number of the ventilation openings is two, and the two ventilation openings are respectively arranged at two interfaces at two sides of the first housing and the second housing.
CN202010243941.3A 2020-03-31 2020-03-31 Terminal protection device Active CN111465245B (en)

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CN111465245B true CN111465245B (en) 2021-04-23

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