Circuit board anti-burning protector

Abstract

The invention belongs to the technical field of line protection devices, and provides a circuit board anti-burning protector, which comprises a fuse used for automatically fusing when overload or short circuit occurs in a circuit, and a protection sleeve arranged outside the fuse and used for protecting the circuit board. The protective sleeve is used for preventing the fuse from being interfered or damaged by an external environment in a normal working state and facilitating the installation and replacement of the fuse; and the bottom box is installed at the lower end of the protective sleeve, and the bottom box is used for installing the protector in a circuit board and is used for supporting and protecting the fuse. The fuse is sealed through the protective sleeve, the bottom box, the limiting piece and the guiding piece, direct contact between the fuse and the external environment can be effectively isolated, so that the electric shock risk caused by mistaken touch or circuit faults is remarkably reduced, the influence of physical factors such as vibration and impact in the external environment on the fuse can be reduced, and the service life of the fuse is prolonged. And poor circuit contact caused by the influence of the fuse is avoided, so that the stability and the reliability can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit protection devices, in particular to a circuit board burn-out protection device. Background Art

[0002] Micro LED modules are products based on LED miniaturization and matrix technology. They miniaturize the traditional inorganic LED array, and each LED pixel at the micron level can be independently positioned and lit. These micron-level LED pixels are integrated on a chip or substrate through precise manufacturing and assembly processes to form a high-density, individually driven LED array.

[0003] Micro LED module circuits may encounter various loads or short circuits during operation, which can easily lead to serious consequences such as overheating, damage, or even fire of the circuit board. Therefore, it is necessary to install a fuse in the Micro LED module circuit board. The fuse can quickly disconnect the circuit when the current exceeds the rated value, thereby avoiding damage caused by overload. This protection mechanism is crucial to ensure the stability and safety of the Micro LED module circuit.

[0004] At present, the practice of directly connecting fuses in circuit boards has achieved basic current protection functions, but lacks the necessary protection mechanism to cope with the challenges of the external environment. Specifically, when impurities such as moisture and dust invade the installation environment of the fuse or the circuit board area, it is very easy to cause a short circuit or fuse failure, which not only weakens its due protection function, but may also cause further damage to the circuit system. What's more serious is that in extreme cases such as circuit overload or short circuit, the fuse may be accompanied by sparks when it blows, greatly increasing the risk of fire caused by it. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a circuit board burn-out protector to solve the above problems.

[0006] A circuit board burn-out protector, comprising:

[0007] A fuse, which is used to automatically blow when an overload or short circuit occurs in the circuit;

[0008] A protective cover is arranged outside the fuse, and is used to prevent the fuse from being disturbed or damaged by the external environment in normal working state and to facilitate the installation and replacement of the fuse;

[0009] A bottom box is installed at the lower end of the protective cover, and the bottom box is used to install the protector in the circuit board and to support and protect the fuse;

[0010] A limiting member, which is arranged inside the bottom box, and two limiting members are provided, and the limiting members are used to limit the protective cover;

[0011] The guide member is installed inside the bottom box, and is used to drive the limiting member to move along the bottom box, change the position of the limiting member, and lock and unlock the protective cover.

[0012] Preferably, the limiting member comprises a fixing column fixedly mounted inside the bottom box, a connecting column is slidably mounted inside the bottom box, an elastic member is fixedly mounted on the outer surface of the fixing column, and the elastic member is fixedly connected to the connecting column.

[0013] Preferably, a movable groove is slidably installed inside the bottom box, the movable groove is fixedly connected to the connecting column, and the movable groove abuts against the protective cover.

[0014] Preferably, an elastic sheet is fixedly mounted on the lower end of the movable groove, a limiting plate is fixedly mounted on the free end of the elastic sheet, and the limiting plate abuts against the protective cover.

[0015] Preferably, a limiting groove is provided at the lower end of the bottom box, a ramp is provided inside the limiting groove, the free end of the elastic sheet is located inside the limiting groove, and the free end of the elastic sheet and the lower end of the limiting plate are both in contact with the ramp.

[0016] Preferably, the guide member comprises a guide track and a clamping slot provided at the upper end of the movable slot, a sliding clamping rod is slidably installed inside the guide track, and the sliding clamping rod is clamped with the clamping slot.

[0017] Preferably, a mounting groove is provided on one side of the base box, and one end of the guide rail is rotatably connected to the mounting groove.

[0018] Preferably, the guide rails include linear guide rails, inclined guide rails and separation guide rails.

[0019] Preferably, a box cover is provided at the upper end of the bottom box, and the box cover is used to close the bottom box.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes effective locking of the protective cover and the fuse through the synergistic effect of the bottom box, the sliding card rod, the card slot and the limit plate. This locking mechanism can prevent the protective cover and the fuse from falling off, thereby avoiding circuit failure or safety accidents caused by the exposure or loosening of the fuse. When the fuse is burned out, the user only needs to push the protective cover and cancel the thrust, and the elastic potential energy of the elastic part can be used to unlock it, and then the new fuse can be easily taken out and replaced. This process does not require the use of additional tools or complicated steps, and is easy to use.

[0022] 2. The present invention seals the fuse through a protective cover, a bottom box, a limiter and a guide, which can effectively isolate the direct contact between the fuse and the external environment, thereby significantly reducing the risk of electric shock caused by accidental touch or circuit failure, and can reduce the influence of physical factors such as vibration and impact in the external environment on the fuse, avoiding the fuse from causing poor circuit contact due to its influence, and then can improve its stability and reliability. Secondly, it can prevent impurities such as moisture and dust from contacting the fuse 1, avoiding circuit short circuit or fuse failure caused by moisture or pollution, and can effectively isolate the external environment from erosion of the fuse, so as to significantly extend the service life of the fuse. Finally, in certain circumstances, such as circuit overload or short circuit, the fuse may melt and produce sparks. The sealing process can reduce the possibility of sparks splashing, thereby reducing the risk of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal first-view structure of the present invention;

[0025] Figure 3 It is a partial structural schematic diagram of the present invention;

[0026] Figure 4 It is a partial structural schematic diagram of the present invention;

[0027] Figure 5 It is a schematic diagram of the internal second viewing angle structure of the present invention;

[0028] Figure 6 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0029] In the figure:

[0030] 1. Fuse; 2. Protective cover; 3. Bottom box; 4. Box cover; 5. Limiting piece; 51. Fixed column; 52. Elastic piece; 53. Connecting column; 54. Moving slot; 55. Limiting slot; 56. Ramp; 57. Elastic sheet; 58. Limiting plate; 6. Guide piece; 61. Guide rail; 62. Slot; 63. Sliding lever; 64. Mounting slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0032] As attached Figure 1 To Attachment Figure 6 As shown:

[0033] Embodiment 1: The present invention provides a circuit board burn-out protector, comprising:

[0034] A fuse 1, wherein the fuse 1 is used to automatically blow when an overload or short circuit occurs in the circuit;

[0035] A protective cover 2, which is arranged outside the fuse 1, and the protective cover 2 is used to prevent the fuse 1 from being disturbed or damaged by the external environment in a normal working state and to facilitate the installation and replacement of the fuse 1;

[0036] A bottom box 3 is installed at the lower end of the protective cover 2. The bottom box 3 is used to install the protector in the circuit board and to support and protect the fuse 1.

[0037] A limiting member 5 is arranged inside the bottom box 3, and two limiting members 5 are provided, and the limiting members 5 are used to limit the protective cover 2;

[0038] The guide member 6 is installed inside the bottom box 3 , and is used to drive the limiting member 5 to move along the bottom box 3 , change the position of the limiting member 5 , and lock and unlock the protective cover 2 .

[0039] As can be seen from the above, by welding the bottom box 3 in the circuit board circuit, and then installing the protector into the circuit board, the protective cover 2 with the fuse 1 installed inside is inserted into the inside of the bottom box 3. In this process, the protective cover 2 will contact the limiter 5, and this contact will cause the guide 6 to move. As the guide 6 moves, the limiter 5 will also be displaced accordingly, thereby locking the protective cover 2. After the locking is completed, the two ends of the fuse 1 are connected to the circuit so that it can function normally. When the circuit is overloaded or short-circuited, the fuse 1 will automatically blow, thereby quickly cutting off the circuit and protecting other components and equipment in the circuit from damage. If the fuse 1 breaks and needs to be replaced, the personnel can push the protective cover 2 forward. This pushing action will cause the guide 6 to move again, and drive the limiter 5 to move, thereby releasing the lock on the protective cover 2. Once the lock is released, the protective cover 2 can be taken out of the bottom box 3 and replaced with a new fuse 1.

[0040] Embodiment 2: This is the second embodiment of the present invention, comprising:

[0041] A fuse 1, wherein the fuse 1 is used to automatically blow when an overload or short circuit occurs in the circuit;

[0042] A protective cover 2, which is arranged outside the fuse 1, and the protective cover 2 is used to prevent the fuse 1 from being disturbed or damaged by the external environment in a normal working state and to facilitate the installation and replacement of the fuse 1;

[0043] A bottom box 3 is installed at the lower end of the protective cover 2. The bottom box 3 is used to install the protector in the circuit board and to support and protect the fuse 1.

[0044] A limiting member 5 is arranged inside the bottom box 3, and two limiting members 5 are provided, and the limiting members 5 are used to limit the protective cover 2;

[0045] The limiting member 5 includes a fixing column 51 fixedly mounted inside the bottom box 3 , a connecting column 53 is slidably mounted inside the bottom box 3 , an elastic member 52 is fixedly mounted on the outer surface of the fixing column 51 , and the elastic member 52 is fixedly connected to the connecting column 53 .

[0046] A moving groove 54 is slidably mounted inside the bottom box 3 . The moving groove 54 is fixedly connected to the connecting column 53 , and the moving groove 54 abuts against the protective cover 2 .

[0047] An elastic piece 57 is fixedly mounted on the lower end of the moving groove 54 , and a limiting plate 58 is fixedly mounted on the free end of the elastic piece 57 . The limiting plate 58 abuts against the protective cover 2 .

[0048] A limiting groove 55 is formed at the lower end of the bottom box 3 , a ramp 56 is arranged inside the limiting groove 55 , the free end of the elastic sheet 57 is located inside the limiting groove 55 , and the free end of the elastic sheet 57 and the lower end of the limiting plate 58 are both in contact with the ramp 56 .

[0049] The guide member 6 is installed inside the bottom box 3. The guide member 6 is used to drive the limit member 5 to move along the bottom box 3, change the position of the limit member 5, and lock and unlock the protective cover 2. The guide member 6 includes a guide rail 61 and a card slot 62 opened at the upper end of the moving slot 54. A sliding card rod 63 is slidably installed inside the guide rail 61, and the sliding card rod 63 is engaged with the card slot 62. A mounting slot 64 is provided on one side of the bottom box 3, and one end of the guide rail 61 is rotatably connected to the mounting slot 64. The guide rail 61 includes a linear guide rail, an inclined guide rail, and a separation guide rail.

[0050] As can be seen from the above, when it is used specifically, it is first necessary to insert the protective cover 2 with the built-in fuse 1 into the interior of the bottom box 3. During this insertion process, the protruding part of the protective cover 2 will abut against the movable groove 54, thereby pushing the movable groove 54 to move forward on the bottom box 3. This forward movement causes the free end of the sliding card rod 63 to move under the guidance of the guide rail 61. The free end of the sliding card rod 63 will smoothly transition from the linear guide area to the oblique guide area, and finally be engaged in the card slot 62. At the same time, as the movable groove 54 moves forward, the elastic member 52 will be gradually stretched, and the elastic sheet 57 at the lower end of the movable groove 54 will also move forward. Driven by the movable groove 54, the free end of the elastic sheet 57 and the limit plate 58 gradually move forward and rise along the ramp 56. When the sliding card rod 63 is fully engaged in the card slot 62, the limit plate 58 just rises to its highest point, thereby effectively blocking and locking the protective cover 2;

[0051] When the fuse 1 is burned out, the protective cover 2 is pushed forward and the thrust is removed. In the process of pushing, the movable slot 54 moves forward again, so that the free end of the sliding card rod 63 enters the separation guide rail, and then returns to the linear guide rail from the separation guide rail. In this process, the limit slot 55 moves backward under the elastic potential energy of the elastic member 52, and squeezes the elastic sheet 57, driving the elastic sheet 57 and the limit plate 58 to slide down along the ramp 56, so that the free end of the elastic sheet 57 and the limit plate 58 return to the inside of the limit slot 55, and then the limit plate 58 no longer locks the protective cover 2, and the protective cover 2 is taken out and replaced with a new fuse 1;

[0052] Through the coordinated action of the bottom box 3, the sliding card rod 63, the card slot 62 and the limit plate 58, the protective cover 2 and the fuse 1 are effectively locked. This locking mechanism can prevent the protective cover 2 and the fuse 1 from falling off, thereby avoiding circuit failures or safety accidents caused by the exposure or loosening of the fuse 1. When the fuse 1 is burned out, the user only needs to push the protective cover 2 and cancel the thrust, and the elastic potential energy of the elastic member 52 can be used to unlock it, and then the new fuse 1 can be easily taken out and replaced. This process does not require the use of additional tools or complicated steps, and is convenient to use.

[0053] By sealing the fuse 1 with the protective cover 2, the bottom box 3, the stopper 5 and the guide 6, the direct contact between the fuse 1 and the external environment can be effectively isolated, thereby significantly reducing the risk of electric shock caused by accidental touch or circuit failure, and reducing the influence of physical factors such as vibration and impact in the external environment on the fuse 1, avoiding the poor circuit contact caused by the influence of the fuse 1, and then improving its stability and reliability. Secondly, it can prevent moisture, dust and other impurities from contacting the fuse 1, avoiding circuit short circuit or fuse 1 failure caused by moisture or pollution, and effectively isolating the external environment from erosion of the fuse 1, so as to significantly extend the service life of the fuse 1. Finally, in certain circumstances, such as circuit overload or short circuit, the fuse 1 may melt and generate sparks. The sealing process can reduce the possibility of sparks splashing, thereby reducing the risk of fire.

[0054] Embodiment 3: This is the third embodiment of the present invention, comprising:

[0055] A fuse 1, wherein the fuse 1 is used to automatically blow when an overload or short circuit occurs in the circuit;

[0056] A protective cover 2, which is arranged outside the fuse 1, and the protective cover 2 is used to prevent the fuse 1 from being disturbed or damaged by the external environment in a normal working state and to facilitate the installation and replacement of the fuse 1;

[0057] A bottom box 3 is installed at the lower end of the protective cover 2. The bottom box 3 is used to install the protector in the circuit board and to support and protect the fuse 1.

[0058] A limiting member 5 is arranged inside the bottom box 3, and two limiting members 5 are provided, and the limiting members 5 are used to limit the protective cover 2;

[0059] The guide member 6 is installed inside the bottom box 3 , and is used to drive the limiting member 5 to move along the bottom box 3 , change the position of the limiting member 5 , and lock and unlock the protective cover 2 .

[0060] A box cover 4 is disposed at the upper end of the bottom box 3 , and the box cover 4 is used to close the bottom box 3 .

[0061] As can be seen from the above, the limiter 5 and the guide 6 are installed in the bottom box 3, and the limiter 5 and the guide 6 protect the protective cover 2 and the fuse 1 in the bottom box 3, and then the box cover 4 is sealed to effectively form a protective space through the bottom box 3 and the box cover 4, thereby effectively improving the stability and reliability of the protector.

[0062] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0063] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0067] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circuit board burn-out protector, characterized in that: include: A fuse (1), wherein the fuse (1) is used to automatically blow when an overload or short circuit occurs in the circuit; A protective cover (2) is arranged outside the fuse (1), and the protective cover (2) is used to prevent the fuse (1) from being disturbed or damaged by the external environment in a normal working state and to facilitate the installation and replacement of the fuse (1); A bottom box (3) is installed at the lower end of the protective cover (2), and the bottom box (3) is used to install the protector in the circuit board and to support and protect the fuse (1); A limiting member (5) is arranged inside the bottom box (3), two limiting members (5) are provided, and the limiting members (5) are used to limit the position of the protective cover (2); A guide member (6) is installed inside the bottom box (3), and the guide member (6) is used to drive the limiting member (5) to move along the bottom box (3), change the position of the limiting member (5), and is used to lock and unlock the protective cover (2).

2. A circuit board burn-out protector as claimed in claim 1, characterized in that: The limiting member (5) comprises a fixing column (51) fixedly mounted inside the bottom box (3), a connecting column (53) slidably mounted inside the bottom box (3), an elastic member (52) fixedly mounted on the outer surface of the fixing column (51), and the elastic member (52) is fixedly connected to the connecting column (53).

3. A circuit board burn-out protector as claimed in claim 1, characterized in that: A movable groove (54) is slidably mounted inside the bottom box (3), the movable groove (54) is fixedly connected to the connecting column (53), and the movable groove (54) abuts against the protective cover (2).

4. A circuit board burn-out protector as claimed in claim 1, characterized in that: An elastic sheet (57) is fixedly mounted on the lower end of the movable groove (54), a limiting plate (58) is fixedly mounted on the free end of the elastic sheet (57), and the limiting plate (58) is in contact with the protective sleeve (2).

5. A circuit board burn-out protector as claimed in claim 1, characterized in that: A limiting groove (55) is provided at the lower end of the bottom box (3), a ramp (56) is provided inside the limiting groove (55), the free end of the elastic sheet (57) is located inside the limiting groove (55), and the free end of the elastic sheet (57) and the lower end of the limiting plate (58) are both in contact with the ramp (56).

6. A circuit board burn-out protector as claimed in claim 5, characterized in that: The guide member (6) comprises a guide track (61) and a clamping slot (62) which are provided at the upper end of the movable slot (54); a sliding clamping rod (63) is slidably installed inside the guide track (61); and the sliding clamping rod (63) is clamped with the clamping slot (62).

7. A circuit board burn-out protector as claimed in claim 6, characterized in that: A mounting groove (64) is provided on one side of the bottom box (3), and one end of the guide rail (61) is rotatably connected to the mounting groove (64).

8. A circuit board burn-out protector as claimed in claim 6, characterized in that: The guide rail (61) comprises a linear guide rail, an inclined guide rail and a separation guide rail.

9. A circuit board burn-out protector as claimed in claim 6, characterized in that: A box cover (4) is provided at the upper end of the bottom box (3), and the box cover (4) is used to close the bottom box (3).

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