CN111312300A - Thermally protected data storage device - Google Patents

Abstract

The invention provides a data storage device, which comprises a shell, a main circuit board and an external connector, wherein the shell is provided with a plurality of ventilation openings, the main circuit board comprises a controller and a plurality of flash memory components, the main circuit board is arranged in the shell and is coated by a fireproof material, the external connector is arranged outside the shell, and a circuit connecting wire is connected between the main circuit board and the external connector.

Description

Thermally protected data storage device

technical field

The present invention relates to a data storage device, in particular to a data storage device with thermal protection function.

Background technique

At present, many mission factories or buses are mostly equipped with digital video recorder (digital video recorder, DVR). With the setting of the digital video recorder, not only can the production process of the factory or the condition of the passengers in the bus be monitored, but also the video recording function of the digital video recorder can be used to record images in case of emergencies, and then the images recorded by the digital video recorder can be used as a clarification. Evidence of responsibility.

Digital video recorders generally use a data storage device as a storage medium for recording images. Please refer to FIG. 1 , which is a circuit structure diagram of the data storage device. As shown in FIG. 1 , the data storage device 100 may be installed in a digital video recorder, which includes a housing 10 . The casing 10 can be a metal casing. A main circuit board 11 will be provided in the interior of the housing 10 . The main circuit board 11 includes a controller 13 , a plurality of flash memory components 15 and a connector 17 , and the controller 13 is respectively connected to the flash memory components 15 and the connector 17 . The connector 17 will protrude outside the housing 10 .

The conventional data storage device 100 is not designed to be fire and flame resistant. When a fire occurs in a factory or a bus, the fire source will cause the metal casing 10 of the data storage device 100 to be heated, and the inside of the metal casing 10 will be in a high temperature environment, which will burn the controller 13 and the flash memory device 15; or, The fire source will also conduct heat to the main circuit board 11 through the metal pins of the connector 17 and burn the controller 13 and the flash memory device 15 on the main circuit board 11 . The image stored in the burned flash memory device 15 will be damaged and cannot be read, so that the truth cannot be restored through the flash memory device 15 when an emergency occurs.

In view of this, the present invention will provide an innovative data storage device, which designs a thermal protection structure for the flash memory components in the data storage device, so as to ensure the integrity of the flash memory components in data storage, which will be the present invention the goal of.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a data storage device with thermal protection, comprising a casing and a main circuit board with flash memory components, a plurality of ventilation openings are disposed on the surface of the casing, and a fireproof material is disposed inside the casing , the main circuit board is placed inside the casing and covered by fireproof material; when a fire occurs, the fireproof material in the casing can effectively isolate the high temperature, so as to avoid the flash memory components on the circuit board from being burned by high temperature; in addition, the casing Air convection can be formed between the vents of the body and the fireproof material. When the heat generated by the fire is conducted to the fireproof material through the shell, the fireproof material can quickly dissipate heat through the air convection formed between the fireproof material and the vent. , so as to avoid the smoldering of the main circuit board covered by the fireproof material.

In order to achieve the above object, the present invention provides a data storage device with thermal protection, comprising: a first casing having a plurality of air vents; a main circuit board including a controller and a plurality of flash memory components, the controller is connected to A flash memory device, wherein the main circuit board is arranged in the first casing and is covered by a fireproof material; and an external connector is arranged outside the first casing and is electrically connected to the main circuit board through a circuit connection line.

In an embodiment of the present invention, the fireproof material is a ceramic fiber, a graphene or a plastic fireproof material.

In an embodiment of the present invention, the circuit connecting wire is a flexible circuit board or a flexible flat cable.

In an embodiment of the present invention, an external circuit board is further included, the external connector is disposed on the external circuit board, one end of the circuit connection line is electrically connected to the main circuit board and the other end is electrically connected to the external circuit board.

The present invention further provides a data storage device with thermal protection, comprising: a first casing with a plurality of ventilation openings; a second casing arranged in the first casing and surrounded by a ceramic fiber or a plastic covered with fireproof material; a main circuit board disposed in the second casing and including a controller and a plurality of flash memory components, the controller is connected to the flash memory components; and an external connector disposed outside the first casing and passing through A circuit connection line is electrically connected to the main circuit board.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a circuit structure diagram of a flash memory device in the prior art.

FIG. 2 is an exploded view of the structure of the data storage device of the present invention from a first perspective.

FIG. 3 is a perspective view of the structure of the data storage device of the present invention from a first perspective.

FIG. 4 is an exploded view of the structure of the data storage device of the present invention from a second perspective.

FIG. 5 is a perspective view of the structure of the data storage device of the present invention from a second perspective.

FIG. 6 is a cross-sectional view of the structure of the data storage device of the present invention.

FIG. 7 is a circuit structure diagram of the flash memory device of the present invention.

Among them, 100 data storage device 10 casing

11 Main circuit board 13 Controller

15 flash assembly 17 connector

200 data storage device 21 first casing

211 Top cover 212 Vents

213 Lower cover 2131 Recessed area

2132 Perforated 215 Sticker

231 Controller 233 Flash Component

250 External circuit boards 25 External connectors

251 Internal Connector 27 Second Housing

29 Circuit Connections 291 Circuit Wiring

300 hosts.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 and FIG. 6 , which are respectively an exploded view of the structure of the data storage device of the present invention from a first perspective, a perspective view of the structure of the first perspective, an exploded view of the structure of a second perspective, and a second perspective view. The three-dimensional view, cross-sectional view and circuit diagram of the structure. As shown in FIG. 2 to FIG. 6 , the data storage device 200 of the present invention is applied to the image recording of a digital video recorder or a driving recorder, and includes a first casing 21 , a main circuit board 23 and an external connection device 25.

The first casing 21 includes an upper cover 211 and a lower cover 213 . The upper cover 211 and the lower cover 213 are respectively provided with a plurality of ventilation openings 212 . In the present invention, a flammable sticker 215 can also be attached to the area where the vent 212 is located. The sticker 215 is marked with product-related information of the data storage device 200 , such as product manufacturing company, product serial number, product model, and the like.

The main circuit board 23 is an epoxy glass fiber board (FR4). In an embodiment of the present invention, the main circuit board 23 is disposed in the first casing 21 and is directly covered by a fireproof material 22 . Alternatively, in order to increase the sturdiness of the data storage device 200 , in another embodiment of the present invention, the main circuit board 23 is further disposed in a second casing 27 , and the main circuit board 23 is disposed in the first casing through the second casing 27 . The body 21 is covered by the fireproof material 22 through the second casing 27 . In the present invention, the fireproof material 22 is a ceramic fiber, a graphene or a plastic fireproof material.

As shown in FIG. 2 and FIG. 6 , the lower cover 213 of the first casing 21 further includes a recessed area 2131 . An external circuit board 250 will be disposed in the recessed area 2131 , an internal connector 251 and an external connector 25 will be disposed on the external circuit board 250 , and the internal connector 251 is electrically connected to the external connector 25 . As shown in FIGS. 2 , 4 and 6 , a through hole 2132 is provided in the recessed area 2131 of the lower cover 213 , one end of a circuit connection line 29 is electrically connected to the internal connector 251 of the external circuit board 250 and the other end passes through the through hole 2132 is electrically connected to the main circuit board 23 covered by the fireproof material 22 .

Please refer to FIG. 7 for a circuit structure diagram of the data storage device of the present invention, and refer to FIGS. 2 to 6 at the same time. The data storage device 200 of the present invention includes a first casing 21 , a main circuit board 23 and an external connector 25 . The first housing 21 includes a plurality of vents 211 , and a sticker 215 indicating product-related information can also be pasted on the area where the vents 211 are provided.

In one embodiment of the present invention, the main circuit board 23 is disposed in the first casing 21 and is directly covered by the fireproof material 22 ; or, in another embodiment of the present invention, the main circuit board 23 is further disposed in the second casing 27 Inside, the main circuit board 23 is arranged in the first casing 21 through the second casing 27 and is covered by the fireproof material 22 through the second casing 27 .

The main circuit board 23 includes a controller 231 and a plurality of flash memory components 233 . The controller 231 is connected to the flash memory component 233 . The external connector 25 is provided outside the first housing 21 . One end of the circuit connection wire 29 is electrically connected to the external connector 25 , and the other end passes through the first casing 21 , the fireproof material 22 and/or the second casing 27 to be electrically connected to the main circuit board 23 . The data storage device 200 is electrically connected to a host 300 using the external connector 25 .

The host 300 may be a digital video recorder or a driving recorder. When the host computer 300 operates, the recorded image is transmitted to the main circuit board 23 via the external connector 25 and the circuit connection line 29 . The controller 231 of the main circuit board 23 issues an access command to the flash memory device 233, so that the flash memory device 233 can store the image to be recorded by the host 300 according to the request of the access command.

When the data storage device 200 is in a fire scene, since the main board 23 is wrapped in the fireproof material 22 of the first casing 21, the fireproof material 22 in the first casing 21 will effectively isolate the external high temperature to avoid high temperature The flash memory component 233 on the motherboard 23 is burned. In addition, the circuit connection line 29 is a flexible printed circuit (Flexible Printed Circuit, FPC) or a flexible flat cable (Flexible Flat Cable, FFC). When the data storage device 200 is at the scene of a fire, the copper foil of the circuit wiring 291 on the circuit connection line 29 will be blown off by the heat source generated by the fire. In this way, the heat source generated by the fire will not be conducted to the main board 23 through the circuit connecting wires 29, so as to ensure that the flash memory components 233 on the main board 23 will not be affected by the high temperature.

In addition, when the data storage device 200 is at the scene of a fire, the flammable sticker 215 on the first casing 21 will be burned by the heat source generated by the fire, so that the vent 212 of the first casing 21 is exposed, and the first casing 21 is exposed. The fireproof material 22 inside the casing 21 can directly contact the outside air through the vent 212 , and air convection can be formed between the vent 212 and the fireproof material 22 . When the heat source generated by the fire is thermally conducted to the fireproof material 22 through the first casing 21 , the fireproof material 22 can dissipate heat through the air convection between the fireproof material 22 and the vent 212 , so as to prevent the interior of the fireproof material 22 from being coated The main circuit board 23 is smoldering. In addition, when the fire is over, the data storage device 200 can also rapidly cool down through the air convection formed between the vent 212 and the fireproof material 22, so as to avoid being in a high temperature state for a long time.

Continuing, many studies have shown that flash memory components (such as NAND FLASH) are under normal temperature (T<40°C), and their data retention capacity will not be affected. However, once the temperature is higher than normal temperature (T>40°C), Its data retention capacity will be greatly reduced. For example, under normal temperature (T<40°C), the data stored in the flash memory device should normally be stored for more than five years. When the temperature rises to 60°C, the data stored in the flash memory device can be stored for about one year. If the temperature rises above 85°C, the data stored in the flash memory components may only be stored for two or three days. Therefore, the data storage device 200 of the present invention will have a better thermal protection effect through the design of the fireproof material 22 and the air vent 212 to prevent the data storage device 200 from being in a high temperature state, thereby ensuring the integrity of data storage. sex.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Modifications should be included in the claims of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (8)

1. A data storage device with thermal protection, characterized in that, comprising: a first housing with a plurality of vents; a main circuit board including a controller and a plurality of flash memory components, the controller is connected to the flash memory components, wherein the main circuit board is arranged in the first casing and is covered by a fireproof material; and An external connector is disposed outside the first casing and is electrically connected to the main circuit board through a circuit connection line. 2 . The data storage device according to claim 1 , wherein the fireproof material is a ceramic fiber, a graphene or a plastic fireproof material. 3 . 3 . The data storage device according to claim 1 , wherein the circuit connection line is a flexible circuit board or a flexible flat cable. 4 . 4 . The data storage device according to claim 1 , further comprising an external circuit board, the external connector is disposed on the external circuit board, and one end of the circuit connection line is electrically connected to the external circuit board. 5 . the main circuit board and the other end is electrically connected to the external circuit board. 5. A data storage device with thermal protection, characterized in that, comprising: a first housing with a plurality of vents; a second shell, arranged in the first shell and covered by a ceramic fiber or a plastic fireproof material; a main circuit board disposed in the second casing and comprising a controller and a plurality of flash memory components, the controller is connected to the flash memory components; and An external connector is disposed outside the first casing and is electrically connected to the main circuit board through a circuit connection line. 6 . The data storage device according to claim 5 , wherein the fireproof material is a ceramic fiber, a graphene or a plastic fireproof material. 7 . 7 . The data storage device of claim 5 , wherein the circuit connection line is a flexible circuit board or a flexible flat cable. 8 . 8 . The data storage device according to claim 5 , further comprising an external circuit board, the external connector is disposed on the external circuit board, and one end of the circuit connection line is electrically connected to the external circuit board. 9 . the main circuit board and the other end is electrically connected to the external circuit board.

Images