Automobile regulator circuit break protection device

Abstract

The utility model discloses an automobile regulator circuit break protection device, which comprises an insulating shell, circuit break metal structures, a pre-tightening structure and a connecting wire, the two circuit break metal structures are respectively and oppositely arranged in the insulating shell, each circuit break metal structure comprises a first metal sheet, a second metal sheet and a contact head, the first metal sheet is of a bent structure, one end of the first metal sheet is fixedly arranged in the insulating shell, and the other end of the first metal sheet and the contact head are integrally formed. The second metal sheet is embedded in the inner ring of the bent part of the first metal sheet; wherein the thermal expansion coefficient of the first metal sheet is greater than that of the second metal sheet, and the shapes of the two contact heads are matched with each other; the pre-tightening ends of the two pre-tightening structures are connected with the corresponding first metal sheets in an insulating manner; the connecting line is respectively connected with the two first metal sheets and is connected in series with the output circuit of the regulator. According to the utility model, when the regulator fails and the current is increased suddenly, the circuit is disconnected automatically to protect the regulator.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of regulator, especially relates to a car regulator circuit protection device. BACKGROUND

[0002] In the automobile electrical system, the regulator plays a vital role, it is responsible for the output voltage, current etc. of automobile generator parameter adjustment, to ensure that the automobile electrical equipment can be under stable, suitable power supply normal operation, however due to the complex and changeable environment of automobile driving, the regulator may fail due to a variety of reasons, among which circuit overload or internal component short circuit is a common situation, once such failure occurs, it often leads to the rapid increase of the current inside the regulator, and then makes the regulator temperature rise rapidly.

[0003] When facing such abnormal temperature rise, the traditional car regulator lacks effective protection mechanism, and only when the fault is serious to a certain extent, for example, the relevant circuit elements are burned out, the whole circuit will be broken, but at this time the automobile electrical system may have suffered great damage, and even may affect the normal driving safety of the automobile, and also increase the maintenance cost and difficulty.

[0004] Moreover, in some cases, even if the fault does not immediately cause serious consequences, the continuous high temperature will accelerate the aging and damage of the regulator and other related electrical components, reducing the overall reliability and service life of the automobile electrical system. SUMMARY

[0005] The utility model aims at at least one of the above-mentioned technical problems in the technical field.

[0006] To achieve the above purpose, the utility model discloses a car regulator circuit protection device, including: insulating shell, circuit breaking metal structure, pre-tightening structure and connecting line, wherein two circuit breaking metal structures are oppositely arranged in the insulating shell, each circuit breaking metal structure includes a first metal sheet, a second metal sheet and a contact head, wherein the first metal sheet is a bending structure, and one end of the first metal sheet is fixedly arranged in the insulating shell, and the other end is integrally formed with the contact head, the inner circle of the bending part of the first metal sheet is provided with an embedding groove, and the second metal sheet is embedded in the embedding groove, wherein the thermal expansion coefficient of the first metal sheet is greater than that of the second metal sheet, and the shapes of the two contact heads are matched with each other, two pre-tightening structures are arranged in the insulating shell, and the pre-tightening ends of the two pre-tightening structures are connected with the corresponding first metal sheets in insulation, and the connecting line is connected with the two first metal sheets to form a power circuit and is connected in series with the output circuit of the regulator.

[0007] In addition, the automobile regulator circuit breaking protection device has the following additional technical features.

[0008] As a further description of the above technical solution: the first metal sheet is provided with a connecting head at one end away from the contact head, and the connecting line is connected to the connecting head.

[0009] As a further description of the above technical solution: the contact head is of an arc-shaped structure, and the inner and outer rings of the two contact heads are tightly connected.

[0010] As a further description of the above technical solution: the pre-tightening structure comprises an insulating plate, a spring and a support, wherein the support is arranged in the insulating shell; the insulating plate is connected to the support through the spring, and abuts on the inner side of the first metal sheet.

[0011] As a further description of the above technical solution: a plurality of ventilation slots are formed in the insulating shell.

[0012] As a further description of the above technical solution: the insulating shell is provided with a threading opening at each side, one end of the connecting line is connected to the corresponding first metal sheet, and the other end is threaded out of the threading opening and extends outward.

[0013] As a further description of the above technical solution: the embedding groove and the second metal sheet are coated with a silver plating layer, and the connecting part of the first metal sheet and the second metal sheet is filled with conductive paste.

[0014] The automobile regulator circuit breaking protection device has the following beneficial effects:

[0015] (1) When the regulator temperature rises to a specific critical value due to a fault, the first metal sheet (with a large thermal expansion coefficient) produces greater expansion deformation relative to the second metal sheet (with a small thermal expansion coefficient), so that the first metal sheet deforms towards the inner ring, thereby separating the two contact heads and timely cutting off the circuit, effectively preventing the fault from further expanding, and avoiding more serious damage to the automobile electrical system caused by continuous abnormal operation of the regulator, such as burning other expensive electronic components, causing electrical fires, etc., greatly improving the safety of the automobile electrical system.

[0016] (2) After the fault is eliminated, for example, the internal fault of the regulator is repaired, the overload condition disappears, and as the temperature decreases, the bimetallic sheet returns to its original shape, the two contact heads re-contact, and the circuit is automatically turned on, so that the regulator can continue to work normally without manual reset operation, which is convenient and fast, ensures the continuous and stable operation of the automobile electrical system, reduces the downtime of the automobile caused by the action of the protection device, and improves the use efficiency of the automobile.

[0017] (3) through the pre-tightening structure to the first metal sheet pre-tightening force, in the normal working temperature range, even if the bimetallic sheet has a small thermal deformation tendency, can ensure that the contact head between keep close, stable connection, effectively prevent the circuit instability phenomenon caused by the first metal sheet slight deformation when not reaching the critical temperature, such as poor contact caused by voltage fluctuation, current intermittent interruption, etc., so as to ensure that the automobile electrical equipment can continuously obtain stable and reliable power supply, improve the working performance and service life of the automobile electrical equipment.

[0018] The additional aspects and advantages of the present application will be partially given in the following description, some of which will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is the internal structure schematic diagram of the automobile regulator circuit protection device according to one embodiment of the present application;

[0021] Figure 2 is the local A enlarged schematic diagram according to one embodiment of the present application;

[0022] Figure 3 is the local B enlarged schematic diagram according to one embodiment of the present application;

[0023] Figure 4 is the internal structure schematic diagram of the automobile regulator circuit protection device according to another embodiment of the present application;

[0024] As shown in the figure:

[0025] 100, insulating shell;101, threading port;200, circuit breaking metal structure;201, connecting head;210, first metal sheet;220, second metal sheet;230, contact head;300, pre-tightening structure;310, insulating plate;320, spring;330, support;400, connecting wire. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] The automobile regulator circuit breaking protection device is described below with reference to the drawings.

[0028] As shown in Figure 1 and Figure 4 The automobile regulator circuit breaking protection device can include an insulating shell 100, a circuit breaking metal structure 200, a pre-tightening structure 300 and a connecting wire 400.

[0029] The two circuit breaking metal structures 200 are oppositely arranged in the insulating shell 100.

[0030] Each circuit breaking metal structure 200 includes a first metal sheet 210, a second metal sheet 220 and a contact head 230.

[0031] The first metal sheet 210 is a bent structure, one end of which is fixedly arranged in the insulating shell 100, and the other end is integrally formed with the contact head 230. An embedding groove is formed in the inner circle of the bent part of the first metal sheet 210, and the second metal sheet 220 is embedded in the embedding groove. The thermal expansion coefficient of the first metal sheet 210 is greater than that of the second metal sheet 220, and the shapes of the two contact heads 230 are matched with each other.

[0032] The two pre-tightening structures 300 are arranged in the insulating shell 100, and the pre-tightening ends of the two pre-tightening structures 300 are insulatively connected with the corresponding first metal sheets 210. The connecting wire 400 is connected with the two first metal sheets 210 to form a power circuit and is connected in series with the output circuit of the regulator.

[0033] Specifically, when the automobile regulator works normally, its working temperature is within a normal range. At this time, since the pre-tightening structure 300 exerts a pre-tightening force on the first metal sheet 210, even if the first metal sheet 210 and the second metal sheet 220 have a slight thermal deformation tendency due to the change of the normal working temperature, the contact heads 230 can still maintain a close and stable connection state.

[0034] At this time, the current flows smoothly through the power circuit formed between the two first metal sheets 210 by the connecting wire 400, and is connected in series with the output circuit of the regulator, thereby ensuring that the electrical equipment of the automobile can continuously obtain stable and reliable power supply, the entire automobile electrical system operates stably, and the electrical equipment can work normally.

[0035] When the automobile regulator fails due to circuit overload or internal component short circuit, the internal current of the regulator will increase sharply, and then its temperature will rise rapidly. As the temperature continues to rise, when a certain critical value is reached, since the thermal expansion coefficient of the first metal sheet 210 is greater than that of the second metal sheet 220, the first metal sheet 210 will have greater expansion deformation relative to the second metal sheet 220.

[0036] Due to the first metal sheet 210 is a bending structure, one end is fixed in the insulating shell 100, the other end is integrally formed with the contact head 230, under the thermal expansion difference, the first metal sheet 210 will deform to the inner ring (that is, deform to the inner ring direction of the bending part embedded with the second metal sheet 220), and press down the pre-tightening structure 300, so that the two contact heads 230 originally matched and closely contacted are separated, thereby cutting off the circuit in time, effectively preventing the fault from further expanding, avoiding more serious damage such as burning other expensive electronic components, causing electrical fire and the like to the automobile electrical system due to the continuous abnormal operation of the regulator, and ensuring the safety of the automobile electrical system.

[0037] When the fault inside the regulator is repaired, for example, the overload condition disappears, the temperature of the regulator will decrease, at this time, the first metal sheet 210 and the second metal sheet 220 will return to the original shape due to the decrease of the temperature, along with the first metal sheet 210 returning to the original shape, the two contact heads 230 originally separated will re-contact, the circuit is automatically turned on, so that the regulator can continue to work normally, and the whole process does not need manual reset operation, which is convenient and fast, ensures that the automobile electrical system can continue to operate stably, reduces the downtime of the automobile caused by the action of the protection device, and improves the use efficiency of the automobile.

[0038] As a possible case, the first metal sheet 210 has a large thermal expansion coefficient, for example, it can be brass, which is a copper-zinc alloy, and it can produce obvious expansion deformation when the temperature changes; the thermal expansion coefficient of the second metal sheet 220 is small, for example, it can be invar steel, which is a nickel-36% iron-nickel alloy, and its thermal expansion coefficient is very low, so under the same temperature change, the size change of invar steel is very small, therefore, when cooperating with the first metal sheet 210 made of brass, due to the large expansion degree of brass and the small expansion degree of invar steel, the first metal sheet 210 will produce sufficient relative deformation relative to the second metal sheet 220, so as to achieve the purpose of separating the contact head 230.

[0039] In an embodiment of the present application, as shown in Figure 2 The end of the first metal sheet 210 away from the contact head 230 is provided with a connecting head 201, and the connecting line 400 is connected to the connecting head 201.

[0040] It should be noted that the connecting head 201 can adopt a shape convenient for wiring, such as a metal ring or a threaded columnar structure, etc., so as to facilitate the connecting line 400 to be connected thereto by winding, screwing or other suitable ways, and reduce the possibility of affecting the stability of the circuit due to loose connection.

[0041] In addition, the insulation shell 100 is provided with a threading hole 101 on each side, one end of the connecting wire 400 is connected with the corresponding first metal sheet 210, the other end is threaded out of the threading hole 101 and extends outward.

[0042] It should be noted that the design of the threading hole 101 provides a channel for the connecting wire 400 to thread out of the insulation shell 100, so that the connecting wire 400 can orderly extend outward after being connected to the first metal sheet 210, avoiding disorderly arrangement of the wire inside the insulation shell 100, ensuring the regularity of the internal structure of the device; on the other hand, the threading hole 101 can limit and protect the connecting wire 400 to some extent, preventing the connecting wire 400 from being easily displaced or damaged due to external force pulling, friction and other conditions during operation of the device, ensuring stable current transmission and reliable connection with the external circuit (such as series connection with the regulator output circuit).

[0043] In an embodiment of the present application, the contact head 230 is an arc-shaped structure, and the inner and outer rings of the two contact heads 230 are tightly connected.

[0044] It should be noted that the arc-shaped structure can provide a larger contact area, compared with a planar structure or other shapes, when the arcs are tightly fitted together, a more continuous and uniform conductive path can be formed at the contact point. When the current passes through, it can be more smoothly conducted from one contact head 230 to another, reducing the problem of excessive contact resistance that may be caused by a small contact area, thereby ensuring the stability of current transmission in the entire circuit, so that each electrical equipment in the automobile electrical system can obtain stable and reliable power supply, avoiding voltage fluctuations, intermittent interruptions and other situations caused by poor contact.

[0045] In an embodiment of the present application, as shown in Figure 3 The pre-tightening structure 300 includes an insulation plate 310, a spring 320 and a bracket 330.

[0046] The bracket 330 is erected in the insulation shell 100; the insulation plate 310 is connected to the bracket 330 through the spring 320, and the insulation plate 310 abuts on the inner side of the first metal sheet 210.

[0047] It should be noted that in the normal installation state, the spring 320 is in a certain compression state, and generates an outward spring force through its elastic deformation, which is transmitted to the insulation plate 310 connected thereto, so that the insulation plate 310 can tightly abut on the inner side of the first metal sheet 210, thereby exerting a pre-tightening force on the first metal sheet 210.

[0048] In the normal working temperature range of the automobile regulator, even if the first metal sheet 210 and the second metal sheet 220 have a slight thermal deformation tendency due to temperature changes, the pre-tightening force of the spring 320 can ensure that the contact heads 230 remain closely and stably connected, preventing unstable phenomena of the circuit caused by slight deformation of the first metal sheet 210, such as voltage fluctuations, intermittent interruption of current, and the like caused by poor contact.

[0049] Moreover, the elastic properties of the spring 320 enable it to adaptively adjust the spring force within a certain range according to actual conditions, such as when the device is subjected to certain external disturbances such as shaking, it can still maintain a relatively stable pre-tightening effect on the first metal sheet 210. Only when the temperature of the first metal sheet 210 is relatively large and a large deformation occurs, the insulating plate 310 is pressed down, so that the spring 320 is compressed, and the two contact heads 230 are separated.

[0050] In an embodiment of the present application, a plurality of ventilation slots are formed in the insulating shell 100.

[0051] It should be noted that during the normal working process of the automobile regulator, even if no failure occurs, the internal circuit elements will also generate a certain amount of heat in the powered state. The ventilation slots can promote air circulation, so that these heat can be timely dissipated with the flow of air, avoiding the accumulation of heat inside the insulating shell 100, thereby helping to maintain each element in a relatively suitable working temperature environment, ensuring the stability of its performance and prolonging its service life.

[0052] In an embodiment of the present application, the embedded groove and the second metal sheet 220 are coated with a silver plating layer, and the connection between the first metal sheet 210 and the second metal sheet 220 is filled with conductive paste.

[0053] It should be noted that the silver plating layer has extremely low resistivity, and when the embedded groove and the second metal sheet 220 are both coated with a silver plating layer, the contact resistance at the contact between the two can be greatly reduced. Because in the circuit, too large contact resistance will lead to increased power loss and may also cause local heating and other adverse phenomena, and the good conductivity of the silver plating layer can ensure that the current passes more smoothly between the first metal sheet 210 and the second metal sheet 220, improving the conductivity efficiency of the entire circuit and ensuring that each device of the automobile electrical system can obtain stable and sufficient power supply. For example, compared to an ordinary metal surface without silver plating, the voltage drop generated by the silver plating layer surface will be much smaller under the same current passing conditions, allowing the power to be transmitted more efficiently.

[0054] In addition, the connection between the first metal sheet 210 and the second metal sheet 220 inevitably has some microscopic gaps, and even if the surface processing precision is high, it is difficult to achieve complete close fitting. The conductive paste can well fill these gaps, which is a paste-like substance with good conductivity, and after filling the connection, it can build a continuous conductive channel at the microscopic level, so that the current can pass from the first metal sheet 210 to the second metal sheet 220 without any obstruction, further reducing the contact resistance at this point, ensuring the continuity and stability of the entire circuit, and avoiding situations such as voltage fluctuations, intermittent power outages, and other factors that affect the normal operation of automotive electrical equipment due to poor contact.

[0055] In summary, according to the automobile regulator circuit protection device according to the embodiments of the present application, when the regulator temperature rises to a certain critical value due to a fault, the first metal sheet 210 (with a large thermal expansion coefficient) will expand and deform more relative to the second metal sheet 220 (with a small thermal expansion coefficient), causing the first metal sheet 210 to deform inwardly, thereby separating the two contact heads 230 and cutting off the circuit in time, effectively preventing the fault from further expanding, and avoiding more serious damage to the automotive electrical system caused by continuous abnormal operation of the regulator, such as burning other expensive electronic components, causing electrical fires, etc., greatly improving the safety of the automotive electrical system.

[0056] After troubleshooting, for example, the regulator internal fault is repaired, the overload condition disappears, and as the temperature decreases, the bimetallic sheet returns to its original shape, the two contact heads 230 re-contact, and the circuit is automatically turned on, allowing the regulator to continue to work normally without the need for manual reset operation, which is convenient and efficient, ensuring the continuous and stable operation of the automotive electrical system, reducing the downtime of the vehicle caused by the action of the protection device, and improving the use efficiency of the vehicle.

[0057] By applying a pre-tightening force to the first metal sheet 210 through the pre-tightening structure 300, even if the bimetallic sheet has a slight tendency to deform, it can ensure that the contact heads 230 remain tightly and stably connected, effectively preventing the circuit from being unstable due to slight deformation of the first metal sheet 210 when the critical temperature is not reached, such as voltage fluctuations caused by poor contact, intermittent interruption of current, etc., thereby ensuring that the automotive electrical equipment can continuously obtain stable and reliable power supply, and improving the working performance and service life of the automotive electrical equipment.

[0058] In the description of the specification, the terms "first", "second", "third", etc. are used only to describe various features, and are not to be construed as indicating or implying relative importance or a specific order of limiting the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0059] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. An automotive regulator circuit protection device, characterized by, The utility model relates to an electric circuit breaker, comprising: an insulating shell (100), a circuit-breaking metal structure (200), a pre-tightening structure (300) and a connecting wire (400), wherein, two of the circuit-breaking metal structures (200) are oppositely arranged in the insulating shell (100), each of the circuit-breaking metal structures (200) comprises a first metal sheet (210), a second metal sheet (220) and a contact head (230), wherein, the first metal sheet (210) is in a bent structure, one end of the first metal sheet (210) is fixedly arranged in the insulating shell (100), and the other end is integrally formed with the contact head (230); an embedding groove is formed in the inner circle of the bent part of the first metal sheet (210); the second metal sheet (220) is embedded in the embedding groove; wherein the thermal expansion coefficient of the first metal sheet (210) is greater than that of the second metal sheet (220), and the shapes of the two contact heads (230) match each other; two pre-tightening structures (400) are arranged in the insulating shell (100), and the pre-tightening ends of the two pre-tightening structures (400) are connected to the corresponding first metal sheets (210) in an insulating manner; the connecting wire (400) connects the two first metal sheets (210) to form a power circuit and is connected in series with the output circuit of a regulator.

2. The automotive regulator circuit protection device as claimed in claim 1, wherein, one end of the first metal sheet (210) away from the contact head (230) is provided with a connecting head (201), and the connecting wire (400) is connected to the connecting head (201).

3. The automotive regulator circuit protection device as defined in claim 1, wherein the contact head (230) is in an arc structure, and the inner and outer circles of the two contact heads (230) are tightly connected.

4. The automotive regulator circuit protection device as defined in claim 1, wherein the pre-tightening structure (400) comprises an insulating plate (410), a spring (420) and a support (430), wherein, the support (430) is arranged in the insulating shell (100); the insulating plate (410) is connected to the support (430) through the spring (420), and the insulating plate (410) abuts on the inner side of the first metal sheet (210).

5. The automotive regulator circuit protection device as defined in claim 1 wherein, a plurality of ventilation slots are formed in the insulating shell (100).

6. The automotive regulator circuit protection device as defined in claim 1 wherein, threading openings (101) are arranged on the two sides of the insulating shell (100), one end of the connecting wire (400) is connected to the corresponding first metal sheet (210), the other end of the connecting wire (400) is threaded out of the threading opening (101) and extends outward.

7. The automotive regulator circuit protection device as defined in claim 1 wherein, the embedding groove and the second metal sheet (220) are coated with a silver plating layer, and the connecting part of the first metal sheet (210) and the second metal sheet (220) is filled with conductive paste.

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