Flame-retardant circuit board

Abstract

The utility model discloses a flame-retardant circuit board, which relates to the technical field of circuit boards and comprises an embedded support mechanism, the embedded support mechanism comprises an embedded support, and a hatch cover is arranged on the inner side of the embedded support. A circuit board mechanism is arranged at the top end of the embedded supporting mechanism, and a protection mechanism is arranged at the side end of the embedded supporting mechanism; the protection mechanism comprises a protection connecting support arranged at the side end of the embedded support, and a bottom support is arranged at the bottom end of the inner side of the protection connecting support. When the circuit board is used, the interior of the circuit board is protected only by adopting the flame-retardant gas and the protective cover, and the flame-retardant void filled with the flame-retardant gas is formed between the protective cover and the circuit board, so that a certain degree of flame-retardant effect can be provided when the protective cover is burnt through even if the protective cover is burnt, and the flame-retardant gas is not conductive, so that the flame-retardant effect is good. The problem of short circuit in the prior art can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a flame retardant circuit board. Background Art

[0002] A circuit board can be called a printed circuit board or a printed circuit board. It is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as a substrate. It has the characteristics of high wiring density, light weight, thin thickness, and good bendability. However, the flame retardant protection effect of existing circuit boards needs to be improved.

[0003] The prior art discloses a circuit board with a flame retardant protective structure with application number CN202220935944.8, which achieves the purpose of flame retardancy by setting a circuit board body, an outlet pipe, a thermally conductive rubber frame, a thermally conductive frame, a fire-retardant upper film, a fire-retardant lower film, a liquid flame retardant, compressed gas and a film.

[0004] However, the prior art still has certain defects. For example, the technical solution of application number CN202220935944.8 adopts fire-retardant film and flame retardant to achieve flame retardancy during use. However, the products of flame retardant and fire-retardant film after combustion may affect the circuit board that needs to be protected, causing problems such as internal short circuit of the circuit board and causing other losses. Utility Model Content

[0005] In order to solve the deficiencies mentioned in the above background technology, the purpose of the present utility model is to provide a flame retardant circuit board.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A flame retardant circuit board comprises an embedded support mechanism, wherein the embedded support mechanism comprises an embedded bracket, and a hatch is arranged inside the embedded bracket;

[0008] A circuit board mechanism is disposed at the top end of the embedded support mechanism, and a protection mechanism is disposed at the side end of the embedded support mechanism;

[0009] The protection mechanism comprises a protection connection bracket arranged at the side end of the embedded bracket, and a bottom bracket is arranged at the inner bottom end of the protection connection bracket;

[0010] A protection cover mechanism is arranged at the top of the circuit board mechanism, a protection control mechanism is arranged at the outer side of the protection mechanism, and a flame retardant box is fixedly installed at the inner side of the embedded support mechanism.

[0011] Furthermore, a stabilizing bracket is provided at the top of the hatch cover, a movable groove is provided on the inner side of the top of the hatch cover, and a movable baffle is provided at the top of the movable groove.

[0012] Furthermore, the circuit board mechanism includes a circuit board arranged at the top of the embedded bracket, components are arranged at the top of the circuit board, a timer chip is arranged at the rear end of the components, and a chipset is arranged at the side end of the timer chip.

[0013] Furthermore, a central bracket is arranged on the outer side of the protection connection bracket, and a top cover connection bracket is arranged on the top inner side of the protection connection bracket.

[0014] Furthermore, the protective cover mechanism includes a protective cover plate arranged at the top end of the embedded bracket, a cover plate connecting rod is arranged at the front end of the protective cover plate, and the cover plate connecting rod is arranged at the outside of the top cover connecting bracket.

[0015] Furthermore, the protection control mechanism includes a side bracket arranged on the outside of the embedded bracket, a movement limiting rod is arranged on the top of the side bracket, a limiting pull rod is arranged on the top of the front end of the side bracket, a compression spring is arranged on the outside of the limiting pull rod, a push plate is arranged on the front end of the compression spring, the outside of the rear end of the push plate is connected to the end of the limiting pull rod away from the side bracket, the limiting pull rod passes through the side wall of the side bracket and is fixedly connected to a connecting pull rod, and a fixed hook is fixedly connected to the outside of the connecting pull rod.

[0016] Furthermore, a lifting guide groove is provided at the top of the flame retardant box, an inner movable rod is slidably connected to the inner side of the lifting guide groove, the top of the inner movable rod is fixedly connected to the bottom end of the movable baffle, and a fire-proof bag is fixedly installed inside the flame retardant box.

[0017] Beneficial effects of the utility model:

[0018] 1. The utility model protects the inside of the circuit board by only using flame-retardant gas and a protective cover. A flame-retardant air chamber filled with flame-retardant gas is formed between the protective cover and the circuit board. Even if the protective cover is burned, a certain degree of flame-retardant effect can be provided when the protective cover is burned through. Moreover, the flame-retardant gas itself is non-conductive, which can prevent the short circuit problem in the prior art.

[0019] 2. When the utility model is in use, it can automatically control the compression spring to push according to the external environment, so as to control the top cover to close the circuit board, thereby protecting the circuit board in time and providing precious time for protecting the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the embedded support mechanism of the utility model;

[0023] Figure 3 This is a schematic diagram of the circuit board mechanism of the utility model;

[0024] Figure 4 It is a schematic diagram of the protection mechanism of the utility model;

[0025] Figure 5 It is a schematic diagram of the protection control mechanism of the utility model;

[0026] Figure 6 This is a schematic diagram of the flame retardant box mechanism of the utility model;

[0027] Figure 7 It is a schematic diagram of the closed state of the utility model.

[0028] In the figure: 1. embedded support mechanism; 11. embedded bracket; 12. hatch; 13. stabilizing bracket; 14. moving groove; 15. movable baffle; 2. circuit board mechanism; 21. circuit board; 22. components; 23. timer chip; 24. chipset; 3. protection mechanism; 31. protection connecting bracket; 32. bottom bracket; 33. center bracket; 34. top cover connecting bracket; 4. protection cover mechanism; 41. protection cover plate; 42. cover plate connecting rod; 5. protection control mechanism; 51. side bracket; 52. movement limiting rod; 53. limiting pull rod; 54. compression spring; 55. push plate; 56. connecting pull rod; 57. fixed pull hook; 6. flame retardant box; 61. lifting guide groove; 62. inner moving rod; 63. flame retardant bag. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] A flame retardant circuit board, such as Figure 1As shown, it includes an embedded supporting mechanism 1, a circuit board mechanism 2 is arranged at the top of the embedded supporting mechanism 1, a protection mechanism 3 is arranged at the side end of the embedded supporting mechanism 1, a protection cover mechanism 4 is arranged at the top of the circuit board mechanism 2, a protection control mechanism 5 is arranged on the outside of the protection mechanism 3, and a flame retardant box 6 is fixedly installed on the inside of the embedded supporting mechanism 1.

[0032] like Figure 2 As shown, the embedded support mechanism 1 includes an embedded bracket 11, a hatch cover 12 is arranged inside the embedded bracket 11, a stabilizing bracket 13 is arranged at the top of the hatch cover 12, a moving groove 14 is opened inside the top of the hatch cover 12, and a movable baffle 15 is arranged at the top of the moving groove 14.

[0033] The flame-retardant gas disposed inside the hatch 12 is discharged toward the top through the movable baffle 15, thereby forming a flame-retardant cabin filled with flame-retardant gas, thereby protecting the circuit board.

[0034] like Figure 3 As shown, the circuit board mechanism 2 includes a circuit board 21 arranged at the top of the embedded bracket 11, components 22 are arranged at the top of the circuit board 21, a timer chip 23 is arranged at the rear end of the component 22, and a chipset 24 is arranged at the side end of the timer chip 23.

[0035] like Figure 4 As shown, the protection mechanism 3 includes a protection connection bracket 31 arranged at the side end of the embedded bracket 11, a bottom bracket 32 ​​is arranged at the inner bottom end of the protection connection bracket 31, a center bracket 33 is arranged on the outer side of the protection connection bracket 31, and a top cover connection bracket 34 is arranged at the inner top end of the protection connection bracket 31.

[0036] like Figure 5 As shown, the protective cover mechanism 4 includes a protective cover plate 41 arranged at the top end of the embedded bracket 11 , a cover plate connecting rod 42 is arranged at the front end of the protective cover plate 41 , and the cover plate connecting rod 42 is arranged at the outside of the top cover connecting bracket 34 .

[0037] The protection control mechanism 5 includes a side bracket 51 arranged on the outside of the embedded bracket 11, a movement limiting rod 52 is arranged on the top of the side bracket 51, a limiting pull rod 53 is arranged on the top of the front end of the side bracket 51, a compression spring 54 is arranged on the outside of the limiting pull rod 53, a push plate 55 is arranged on the front end of the compression spring 54, and the rear end of the push plate 55 is connected to the end of the limiting pull rod 53 away from the side bracket 51. The limiting pull rod 53 passes through the side wall of the side bracket 51 and is fixedly connected to a connecting pull rod 56, and a fixed hook 57 is fixedly connected to the outside of the connecting pull rod 56.

[0038] By limiting the pull rod 53 and the compression spring 54 to control the push plate 55, the push plate 55 can be used to push the center bracket 33, so that the protection connecting bracket 31 drives the top cover connecting bracket 34, and the top cover connecting bracket 34 can be used to push the cover connecting rod 42, so as to drive the protection cover 41 to move and cover the outside of the circuit board mechanism 2, thereby protecting the circuit board mechanism 2.

[0039] During the protection process, the fixing hook 57 made of a fusible material is melted, and the material can be tin, so that the fixing hook 57 can no longer block the connecting rod 56, so that the compression spring 54 can push the connecting rod 56, so that the pushing plate 55 pushes the central bracket 33 to move, and the top cover connecting bracket 34 moves toward the top of the circuit board mechanism 2, forming a Figure 7 Status shown.

[0040] A lifting guide groove 61 is provided at the top of the flame retardant box 6, an inner moving rod 62 is slidably connected to the inner side of the lifting guide groove 61, the top of the inner moving rod 62 is fixedly connected to the bottom of the movable baffle 15, and a fire-proof bag 63 is fixedly installed inside the flame retardant box 6.

[0041] The top movable baffle 15 is controlled by the lifting guide groove 61 inside the flame retardant box 6, and the inner moving rod 62 moves inside the lifting guide groove 61, so that the flame retardant gas inside the top of the flame retardant bag 63 moves toward the top, thereby achieving flame retardancy.

[0042] When in use, place the circuit board on the top of the embedded bracket 11, and install the through holes on the circuit board corresponding to the position of the stable bracket 13. After installation, put it into normal use. In the process of use, if a fire or other situation occurs, when it is necessary to protect the circuit board and maintain the connection, the limiting rod 53 made of a temperature-sensitive low-melting-point alloy is used. When an open flame appears and the temperature rises, the fixed hook 57 connected to the limiting rod 53 softens, and the compression spring 54 pushes the push plate 55 to move to the front end, driving the center bracket 33. During the movement of the center bracket 33 to the front end, the top cover connecting bracket 34 moves to the front end, driving the cover connecting rod 42, so as to control the movement of the protective cover 41 to the front end. At the same time, the bottom bracket 32 ​​is also driven to move along the cabin. The top side wall of the cover 12 moves toward the front end. During this process, the movement of the bottom bracket 32 ​​drives the movable baffle 15 to move in the movable groove 14, allowing the gas of the flame retardant bag 63 inside the lifting guide groove 61 to be output to the top through the lifting guide groove 61. The gas here is a flame retardant gas that is lighter than air. The optional gas is compressed nitrogen, so that the flame retardant gas fills the position of the circuit board. The protective cover mechanism 4 and the flame retardant gas are used to synchronously realize internal flame retardancy to protect the circuit board. The bottom bracket 32 ​​can drive the movable baffle 15 to move during the process of being driven.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A flame retardant circuit board, comprising an embedded support mechanism (1), characterized in that: The embedded support mechanism (1) comprises an embedded bracket (11), and a hatch (12) is arranged inside the embedded bracket (11); A circuit board mechanism (2) is arranged at the top end of the embedded support mechanism (1), and a protection mechanism (3) is arranged at the side end of the embedded support mechanism (1); The protection mechanism (3) comprises a protection connection bracket (31) arranged at the side end of the embedded bracket (11), and a bottom bracket (32) is arranged at the inner bottom end of the protection connection bracket (31); A protective cover mechanism (4) is provided at the top of the circuit board mechanism (2), a protective control mechanism (5) is provided on the outside of the protective mechanism (3), and a flame retardant box (6) is fixedly installed on the inside of the embedded support mechanism (1).

2. A flame retardant circuit board according to claim 1, characterized in that: A stabilizing bracket (13) is arranged at the top of the hatch cover (12), a movable groove (14) is opened on the inner side of the top of the hatch cover (12), and a movable baffle (15) is arranged at the top of the movable groove (14).

3. A flame retardant circuit board according to claim 2, characterized in that: The circuit board mechanism (2) comprises a circuit board (21) arranged at the top end of the embedded bracket (11), components (22) are arranged at the top end of the circuit board (21), a timer chip (23) is arranged at the rear end of the components (22), and a chipset (24) is arranged at the side end of the timer chip (23).

4. A flame retardant circuit board according to claim 3, characterized in that: A central bracket (33) is arranged on the outside of the protection connection bracket (31), and a top cover connection bracket (34) is arranged on the top of the inside of the protection connection bracket (31).

5. A flame retardant circuit board according to claim 4, characterized in that: The protective cover mechanism (4) comprises a protective cover plate (41) arranged at the top end of the embedded bracket (11), a cover plate connecting rod (42) being arranged at the front end of the protective cover plate (41), and the cover plate connecting rod (42) being arranged at the outside of the top cover connecting bracket (34).

6. The flame retardant circuit board according to claim 5, characterized in that: The protection control mechanism (5) comprises a side bracket (51) arranged on the outside of the embedded bracket (11), a movement limiting rod (52) is arranged at the top of the side bracket (51), a limiting pull rod (53) is arranged at the top of the front end of the side bracket (51), a compression spring (54) is arranged on the outside of the limiting pull rod (53), a push plate (55) is arranged at the front end of the compression spring (54), the rear end of the push plate (55) is connected to the end of the limiting pull rod (53) away from the side bracket (51), the limiting pull rod (53) passes through the side wall of the side bracket (51) and is fixedly connected to a connecting pull rod (56), and the outside of the connecting pull rod (56) is fixedly connected to a fixed hook (57).

7. The flame retardant circuit board according to claim 5, characterized in that: The top of the flame retardant box (6) is provided with a lifting guide groove (61), the inner side of the lifting guide groove (61) is slidably connected with an inner moving rod (62), the top of the inner moving rod (62) is fixedly connected to the bottom end of the movable baffle (15), and a fire-proof bag (63) is fixedly installed inside the flame retardant box (6).

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