Internal box and data recorder

Abstract

The utility model provides an internal box and a data recorder, the internal box comprises a box body and an inner box, the box body is internally provided with a first accommodating cavity, and the box body is provided with a first opening communicated with the first accommodating cavity. The inner box comprises a box cover, the peripheral edge of the box cover is matched with the first opening, a second opening is formed in the box cover, a protruding part inserted into the first containing cavity is arranged on the box cover, and a storage cavity communicated with the second opening is formed in the protruding part. The data recorder comprises a shell, a protected device, an inner box, a storage module, a circuit board and a transmission line. The internal box and the data recorder are good in stability, the protection performance of the storage module can be improved, operators can conveniently improve related work efficiency, labor intensity is reduced, and the requirement of mass production can be met.

Description

Technical Field

[0001] The utility model relates to the field of data recorder design, in particular to an internal box and a data recorder. Background Art

[0002] In the transportation fields such as airplanes, cars, and railways, data recorders that record driving data are installed in transportation equipment. The data stored in the data recorder is extremely important and is the basis for judging the cause of the accident when the transportation equipment has an accident. The storage module of the data recorder is usually set in an internal box, which mainly protects the storage module. Therefore, designing an internal box with waterproof, high temperature resistance, drop resistance, and shock resistance is extremely important for evidence collection in the event of an abnormal accident. Utility Model Content

[0003] In order to provide the storage module placed in the data recorder with protection such as waterproof, high temperature protection, drop resistance and shock resistance, and to prevent the storage module from being destroyed by high temperature or mechanical damage in abnormal accidents, so as to ensure normal evidence collection work in the event of an accident, the utility model discloses an internal box and a data recorder.

[0004] The technical solution to achieve the purpose of the utility model is as follows:

[0005] The utility model discloses an internal box, comprising a box body and an inner box. The box body is provided with a first cavity, and the box body is provided with a first opening communicating with the first cavity.

[0006] The inner box includes a box cover, the outer peripheral edge of the box cover cooperates with the first opening, the box cover is provided with a second opening, the box cover is provided with a protrusion inserted into the first cavity, and the protrusion is provided with a storage cavity connected with the second opening.

[0007] Furthermore, a hollow layer is formed between the inner wall of the box body and the outer wall of the raised portion, and the hollow layer is filled with a phase-change liquid.

[0008] Furthermore, the box cover is sealed and fixed to the first opening via a sealant.

[0009] Furthermore, the storage cavity is filled with sealant, and the sealant covers the outside of the protected device in the storage cavity.

[0010] Furthermore, the sealant is a high temperature and high pressure resistant sealant.

[0011] Preferably, the high temperature and high pressure resistant sealant is a silicone sealant curing glue.

[0012] Furthermore, an annular protrusion is provided on the box cover and located on the outer periphery of the protruding portion, and the annular protrusion cooperates with the annular groove on the first opening.

[0013] Furthermore, the box body is a plastic box with a melting point less than 150°C.

[0014] Furthermore, the inner box is a plastic box, and the melting point of the inner box is greater than the melting point of the box body.

[0015] Furthermore, when the data logger is subjected to a high temperature fire environment, the box body melts when the ambient temperature is greater than 150° C., thereby releasing the pressure of the phase change liquid after high temperature vaporization, thereby reducing the ambient temperature and protecting the protected device in the inner box.

[0016] The embodiment of the utility model further provides a data recorder, comprising a housing, a protected device and the internal box described in the above embodiment, wherein the internal box is located inside the housing.

[0017] Among them, the protected device is a storage module, the storage module is arranged on a circuit board, the circuit board is provided with a transmission line that communicates with the storage module, the transmission line is partially located in the storage cavity, and the transmission line passes through the outlet on the shell to connect with an external device.

[0018] Furthermore, the data logger also includes a thermal insulation pad, which is located between the inner box and the inner wall of the outer shell.

[0019] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: the internal box of the utility model is formed by providing a raised portion integrally formed with the box cover on the box cover, and a storage cavity is provided in the raised portion, and the protected device is placed in the storage cavity and sealed, and the inner box is provided in the box body at the same time, which can improve the structural stability of the internal box and the protective performance of the protected device, reduce production time, and facilitate operators to improve the efficiency of related work and reduce labor intensity to meet the needs of mass production.

[0020] Furthermore, by filling the phase change liquid in the hollow layer formed between the inner box and the box body, the stability of the inner box can be further improved. At the same time, when subjected to high temperature or impact, the protected device can be deeply protected, thereby improving the protection safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1A three-dimensional diagram of an inner box disclosed in an embodiment of the utility model;

[0023] Figure 2 A cross-sectional view of an inner box disclosed in an embodiment of the utility model;

[0024] Figure 3 A three-dimensional diagram of a box body disclosed in an embodiment of the utility model;

[0025] Figure 4 A three-dimensional diagram of an inner box disclosed in an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the assembly of the inner box disclosed in the embodiment of the utility model;

[0027] Among them, 1. box body; 2. inner box; 3. storage cavity; 4. protected device; 5. hollow layer; 6. circuit board; 7. transmission line; 11. first cavity; 12. first opening; 121. annular groove; 21. box cover; 211. second opening; 212. annular protrusion; 22. protrusion. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0029] The following describes the implementation methods of the present application through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and the features of the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0030] The utility model embodiment discloses an inner box, see Figure 1 , Figure 2 and Figure 3 As shown, the internal box includes a box body 1 and an inner box 2 . A first cavity 11 is provided in the box body 1 . A first opening 12 communicating with the first cavity 11 is opened on the box body 1 .

[0031] Among them, see Figure 1 , Figure 2 and Figure 4As shown, the inner box 2 includes a box cover 21, the outer peripheral edge of the box cover 21 cooperates with the first opening 12, a second opening 211 is opened on the box cover 21, a protrusion 22 is inserted into the first cavity 11 on the box cover 21, and a storage cavity 3 connected to the second opening 211 is provided in the protrusion 22.

[0032] Further, see Figure 2 As shown, a hollow layer 5 is formed between the inner wall of the box body 1 and the outer wall of the protrusion 22, and the hollow layer 5 is filled with a phase-change liquid. On the one hand, the phase-change liquid can improve the structural stability of the inner box when there is severe vibration. On the other hand, in a high-temperature environment, the phase-change liquid can absorb heat to provide thermal protection for the protected device 4 in the inner box. Even when the box body is damaged by heat, the outflow of the phase-change liquid can avoid the increase in pressure in the first cavity 11 caused by high temperature, which can cause mechanical damage or high-heat damage to the protected device 4. At the same time, under low-temperature conditions, the phase-change liquid can also prevent the loss of heat in the storage cavity 3, which may cause the protected device 4 to fail to work normally at low temperatures, thereby improving the stability of the work of the protected device.

[0033] Furthermore, in order to improve the sealing performance of the inner box, after the box cover 21 is covered on the first opening 12, the contact surface between the box cover 21 and the first opening 12 is sealed and fixed with a sealant.

[0034] Furthermore, in order to further improve the stability of the protected device 4 in the storage cavity 3, prevent the protected device 4 from detaching from the storage cavity, and prevent moisture from entering the storage cavity 3 to improve its waterproof performance and avoid moisture damage to the protected device 4, after the protected device 4 is placed in the storage cavity 3, it is sealed with sealant so that the sealant covers the outside of the protected device 4 in the storage cavity 3.

[0035] Furthermore, the sealant is a high temperature and high pressure resistant sealant.

[0036] Preferably, the high temperature and high pressure resistant sealant is a silicone sealant curing glue.

[0037] Further, see Figure 3 and Figure 4 As shown, an annular protrusion 212 is provided on the box cover 21 and located on the outer periphery of the protruding portion 22 , and the annular protrusion 212 cooperates with the annular groove 121 on the first opening 12 .

[0038] Furthermore, the box body 1 is a plastic box with a melting point less than 150°C. The material of the box body 1 is selected as a plastic box, so that the box body 1 can be melted in a high temperature environment, so that the liquid or air in the hollow layer 5 between the box body 1 and the inner box 2 overflows, thereby avoiding high-temperature damage to the protected device 4 in the inner box 2.

[0039] Furthermore, the inner box 2 is a plastic box, and the melting point of the inner box 2 is greater than the melting point of the box body 1. By selecting the material of the inner box 2, the protected device 4 in the inner box 2 can be further protected to prevent the box body 1 from melting under high temperature conditions, causing the inner box 2 to also melt and thus causing damage to the protected device 4.

[0040] The embodiment of the utility model further provides a data recorder, comprising a housing, a protected device 4 and the internal box described in the above embodiment, wherein the internal box is located inside the housing.

[0041] Among them, the protected device 4 is a storage module, which is arranged on a circuit board 6. A transmission line 7 for communicating with the storage module is provided on the circuit board 6. Part of the transmission line 7 is located in the storage cavity 3, and the transmission line 7 passes through the outlet on the shell to connect with the external device.

[0042] Furthermore, the data logger also includes a thermal insulation pad, which is located between the inner box and the inner wall of the outer shell.

[0043] In the embodiment of the utility model, the outer shell is only used to accommodate the inner box, so the structure and material of the outer shell are not limited. When assembling the data logger, refer to Figure 5 As shown, first, the storage module and the transmission line 7 are connected to the circuit board 6 to ensure data transmission between the storage module and the transmission line 7; secondly, they are inserted into the storage cavity 3 in the raised portion 22 of the inner box 2, and are potted with a high-temperature and high-pressure resistant sealant to seal the storage module and part of the transmission line 7 in the storage cavity 3; then, the raised portion 22 of the inner box 2 is inserted into the first cavity 11 potted with the phase change liquid, and the box cover 21 is contacted and matched with the first opening 12, and fixed with a sealant; finally, the inner box is placed in the outer shell, and the transmission line 7 is led out from the lead hole on the outer shell and connected to the external device.

[0044] During use, if an abnormally high-temperature fire environment occurs, when the temperature to which the recorder is subjected is transferred to the inner box 2, the corners of the inner box 2 will melt first, causing the phase change liquid to leak. This can avoid the increase in pressure of the phase change liquid caused by the sealing of the inner box 2 in a high-temperature environment, resulting in high-temperature damage and mechanical damage to the storage module caused by the increase in the temperature of the inner box.

[0045] The embodiments of the utility model achieve the following technical effects: the internal box of the utility model is formed by providing a raised portion integrally formed with the box cover on the box cover, and a storage cavity is provided in the raised portion. The protected device is placed in the storage cavity and sealed, and the inner box is provided in the box body. This can improve the structural stability of the internal box and the protective performance of the protected device, reduce production time, and facilitate operators to improve the efficiency of related work and reduce labor intensity to meet the needs of mass production.

[0046] Furthermore, by filling the phase change liquid in the hollow layer formed between the inner box and the box body, the stability of the inner box can be further improved. At the same time, when subjected to high temperature or impact, the protected device can be deeply protected, thereby improving the protection safety.

[0047] In addition, a plastic with a melting point lower than 150°C is used as the box body, and a plastic with a melting point higher than that of the box body is used as the inner box. This allows the data recorder to release the pressure and heat of the phase change liquid by melting the box body in a high temperature environment, thereby protecting the storage module in the inner box.

[0048] Obviously, those skilled in the art should understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inner box, characterized in that: It comprises a box body (1) and an inner box (2), wherein a first cavity (11) is provided in the box body (1), and a first opening (12) communicating with the first cavity (11) is opened on the box body (1); The inner box (2) comprises a box cover (21), the outer peripheral edge of the box cover (21) cooperates with the first opening (12), a second opening (211) is provided on the box cover (21), a protrusion (22) inserted into the first cavity (11) is provided on the box cover (21), and a storage cavity (3) connected to the second opening (211) is provided in the protrusion (22).

2. An inner box according to claim 1, characterized in that: A hollow layer (5) is formed between the inner wall of the box body (1) and the outer wall of the raised portion (22), and the hollow layer (5) is filled with a phase-change liquid.

3. An inner box according to claim 1, characterized in that: The box cover (21) is sealed and fixed to the first opening (12) via a sealant.

4. An inner box according to claim 1, characterized in that: The storage cavity (3) is filled with sealant, and the sealant covers the outside of the protected device (4) in the storage cavity (3).

5. An inner box according to claim 3 or 4, characterized in that: The sealant is a high temperature and high pressure resistant sealant.

6. An inner box according to claim 5, characterized in that: The high temperature and high pressure resistant sealant is a silicone seal curing sealant.

7. An inner box according to claim 1, characterized in that: An annular protrusion (212) is provided on the box cover (21) and located on the outer periphery of the protruding portion (22); the annular protrusion (212) cooperates with the annular groove (121) on the first opening (12).

8. An inner box according to claim 1, characterized in that: The box body (1) is a plastic box with a melting point less than 150°C.

9. An inner box according to claim 1, characterized in that: The inner box (2) is a plastic box, and the melting point of the inner box (2) is greater than the melting point of the box body (1).

10. A data recorder, characterized in that: It comprises a housing, a protected device (4) and an internal box according to any one of claims 1 to 9, wherein the internal box is located inside the housing; The protected device (4) is a storage module, and the storage module is arranged on a circuit board (6). A transmission line (7) for communicating with the storage module is arranged on the circuit board (6), and a portion of the transmission line (7) is located in the storage cavity (3). The transmission line (7) passes through an outlet on the housing and is connected to an external device.

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