Instrument anti-reverse connection power supply assembly

Abstract

This utility model relates to an instrument panel reverse connection protection power supply assembly in the field of automotive electronics technology. It includes: a power plug and a power socket used in conjunction with each other; a plug housing fixedly connected to the power plug; positive and negative pins symmetrically fixedly connected in the plug housing and electrically connected to the power supply wiring harness on the power plug; a slot on the power socket that mates with the plug housing; and a conductive base fixedly connected in the slot, electrically connected to the power supply wiring harness on the power socket. Using this structure, reverse connection can be prevented from the source. During vehicle maintenance and repair, even if an operator mistakenly attempts to reverse the connection, it will be unable to be inserted due to the mismatch between the pin and socket sizes. This effectively avoids damage to internal electronic components of the vehicle's instrument panel caused by reverse connection, reduces maintenance costs and failure risks, and ensures long-term reliable operation of the instrument system.

Description

Technical Field

[0001] This utility model relates to an instrument reverse connection protection power supply component, and in particular to an instrument reverse connection protection power supply component applied in the field of automotive electronics technology. Background Technology

[0002] In the field of vehicle manufacturing and maintenance, the instrument panel is the core component for displaying vehicle status information. Its stable power supply is of great significance for ensuring driving safety and achieving accurate vehicle condition monitoring. At present, the power connection of vehicle instrument panels mostly adopts the traditional plug-socket structure, which transmits power through simple pins and sockets. With the development of automotive electronics and intelligence, the integrated functions of the instrument panel are becoming increasingly complex, and the requirements for power supply stability and reliability against misconnection are constantly increasing. In conventional power supply components, although some designs use different pins based on the differences in positive and negative polarity, they mostly focus on electrical performance adaptation, such as reducing contact resistance through pin material and plating optimization, but there are shortcomings in structural design dimensions such as mechanical reverse connection protection and connection stability.

[0003] In most existing vehicle instrument panel power supply components, the connection relies solely on the operator's visual judgment of the positive and negative terminals of the pins. In maintenance scenarios (such as when the space is limited, the lighting is insufficient, or the maintenance personnel are negligent) and assembly lines (where errors are prone to occur during rapid operations), the risk of reverse connection remains high. Once reversed, the delicate electronic circuits inside the instrument panel (such as signal processing modules and microcontrollers) will be subjected to currents far exceeding the design thresholds due to reverse voltage surges, which will very likely cause component burnout and circuit board short circuits. This not only significantly increases maintenance costs and vehicle downtime but may also create safety hazards (such as the failure of fault warning functions, preventing the driver from noticing vehicle abnormalities in time). Therefore, this utility model is proposed. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to solve the problem of reverse connection of power supply components.

[0005] To address the aforementioned problems, this utility model provides an instrument reverse connection protection power supply assembly, comprising: a power plug and a power socket for mutual use; a plug housing fixedly connected to the power plug; a positive pin and a negative pin symmetrically fixedly connected in the plug housing and electrically connected to the power supply wiring harness on the power plug; a slot on the power socket for use with the plug housing; a conductive base fixedly connected in the slot and electrically connected to the power supply wiring harness on the power socket; the diameter of the positive pin being larger than the diameter of the negative pin; a positive socket and a negative socket on the conductive base for use with the positive pin and the negative pin; and a locking and fixing assembly for locking the power plug and the power socket together, installed on the power plug and the power socket.

[0006] In the aforementioned instrument reverse connection protection power supply assembly, the positive pin diameter is larger than the negative pin diameter plus the corresponding adapter hole, which prevents reverse connection of the power supply from the source. During vehicle maintenance and other operations, even if the operator accidentally tries to reverse the connection, it will not be able to be inserted because the pin and hole sizes do not match. This effectively avoids damage to the internal electronic components of the vehicle instrument due to reverse connection of the power supply, reduces maintenance costs and failure risks, and ensures the long-term reliable operation of the instrument system.

[0007] As a further improvement of this application, the locking and fixing assembly includes a first magnetic block and a second magnetic block. The first magnetic block is symmetrically embedded and fixedly connected to the opening end of the plug-in housing, and the second magnetic block is symmetrically embedded and fixedly connected to the slot.

[0008] As a further improvement of this application, a first magnetic ring is embedded and fixedly connected at the open end of the plug-in housing, and a second magnetic ring that cooperates with the first magnetic ring is embedded and fixedly connected at the end of the conductive base.

[0009] As a further improvement of this application, the power plug is provided with symmetrical positioning holes on both sides of the plug housing, and the power socket is provided with two symmetrical positioning rods fixedly connected on both sides of the conductive base.

[0010] As a further improvement of this application, the length of the positioning pin is longer than the length of the insertion housing.

[0011] As a further improvement to this application, a rounded chamfer is provided at the opening of the positioning socket.

[0012] In summary, compared with existing technologies, this instrument's reverse connection protection power supply assembly, through its design where the diameter of the positive pin is larger than that of the negative pin plus a corresponding adapter socket, prevents reverse connection of power from the source. During vehicle maintenance and other operations, even if the operator accidentally attempts to reverse the connection, it will not be able to be inserted due to the mismatch between the pin and socket sizes. This effectively avoids damage to the internal electronic components of the vehicle's instrument due to reverse connection of power, reduces maintenance costs and failure risks, and ensures the long-term reliable operation of the instrument system.

[0013] The magnetic adsorption design of the locking and fixing components ensures a tight connection between the power plug and the power socket even under complex vehicle operating conditions. Compared with ordinary power components without a locking structure, this can significantly reduce problems such as plug loosening and poor contact caused by vibration, ensuring a continuous and stable power supply to the instrument panel, avoiding abnormal instrument display and intermittent functional failures, and improving the reliability of vehicle instrument use and the driving experience.

[0014] The magnetic adsorption-assisted plug-in method simplifies the docking operation between the plug and the socket, reduces the installation difficulty and operation time, and has a more obvious advantage when connecting the instrument power supply in the narrow space of the vehicle, thus improving the efficiency of assembly and maintenance.

[0015] The component's structural design is based on the standard power interface size and power supply requirements of vehicle instruments. Under the premise of complying with vehicle electrical system standards, it can be adapted to the power connection scenarios of various vehicle models. As long as the vehicle instrument power interface specifications are matched, this reverse connection protection component can be used. It has a certain degree of universality, which makes it easy for automobile manufacturers and repair shops to apply or replace it in batches, and promotes the standardization and reliability upgrade of vehicle instrument power connection.

[0016] In summary, this instrument reverse connection protection power supply assembly, through its reasonable structural design and component coordination, achieves efficient reverse connection protection, stable connection, and convenient installation in vehicle instrument power connections, providing strong support for the stable operation of vehicle instrument systems and helping to improve the reliability and safety of the overall vehicle electrical system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure when the power plug and power socket are connected in the embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure when the power plug and power socket are separated in the embodiments of this application. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure when the power plug and power socket are separated in the embodiments of this application. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the power socket in the embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Power plug; 101. Plug housing; 102. Positive pin; 103. Negative pin; 104. First magnetic block; 105. Positioning socket; 106. Chamfered corner; 2. Power socket; 201. Slot; 202. Conductive base; 203. Positive socket; 2031. Negative socket; 204. Second magnetic block; 205. Positioning rod; 3. First magnetic ring; 4. Second magnetic ring. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] Implementation method:

[0025] Figures 1-4The diagram illustrates a reverse polarity protection power supply assembly for an instrument, comprising: a power plug 1 and a power socket 2 that cooperate with each other; a plug housing 101 fixedly connected to the power plug 1; a positive pin 102 and a negative pin 103 symmetrically fixedly connected in the plug housing 101 and electrically connected to the power transmission line harness on the power plug 1; a slot 201 on the power socket 2 that cooperates with the plug housing 101; a conductive base 202 fixedly connected in the slot 201 and electrically connected to the power transmission line harness on the power socket 2; the diameter of the positive pin 102 is larger than the diameter of the negative pin 103; the conductive base 202 has a positive socket 203 and a negative socket 2031 that cooperate with the positive pin 102 and the negative pin 103; and a locking and fixing assembly for locking the power plug 1 and the power socket 2 together, installed on the power plug 1 and the power socket 2.

[0026] The locking and fixing assembly includes a first magnetic block 104 and a second magnetic block 204. The first magnetic block 104 is symmetrically embedded and fixedly connected to the opening end of the insertion housing 101, and the second magnetic block 204 is symmetrically embedded and fixedly connected to the slot 201.

[0027] Before powering on the vehicle's instrument system, the operator must prepare the power plug 1 and power socket 2 equipped with the reverse connection protection power assembly. The power plug 1 is connected to the vehicle's power supply terminal through the power transmission cable harness, and the power socket 2 is connected to the vehicle's instrument circuit. Ensure that all components are in normal initial condition and that there is no physical damage or broken wiring.

[0028] When connecting or disconnecting, align the plug housing 101 of the power plug 1 with the slot 201 of the power socket 2. Since the diameter of the positive pin 102 is larger than that of the negative pin 103, and the positive socket 203 and negative socket 2031 on the conductive base 202 are compatible with the pin size, the positive pin 102 can be inserted into the positive socket 203 and the negative pin 103 can be inserted into the negative socket 2031 when connected in the correct direction. Reverse insertion will not be possible because the pin and socket size do not match. This achieves preliminary protection against reverse connection from a physical structure perspective.

[0029] During the insertion process, the first magnetic block 104 embedded in the opening end of the insertion housing 101 and the second magnetic block 204 in the slot 201 attract each other due to their opposite magnetic poles, generating a magnetic attraction force. This helps the plug and socket to quickly and accurately align, guides the insertion action to be completed smoothly, and further enhances the pre-fixing effect of the connection.

[0030] As the plug housing 101 is fully inserted into the slot 201, the first magnetic block 104 and the second magnetic block 204 come close together. The magnetic attraction force makes the power plug 1 and the power socket 2 fit tightly together. At this time, the locking and fixing component based on the magnetic blocks plays a role, using magnetic attraction force to lock the two together, ensuring a stable connection and preventing the plug from becoming loose or having poor contact due to vibration, bumps, etc. during vehicle operation.

[0031] After the above connection and locking are completed, the vehicle power supply is transmitted through the power plug 1's power cable harness, via the positive pin 102, positive socket 203, and negative pin 103, negative socket 2031, to the vehicle instrument power circuit connected to the power socket 2, so as to provide a continuous and stable power supply to the instrument system and ensure the normal operation of functions such as speed display, fuel level display, and fault warning light.

[0032] When it is necessary to inspect or replace the vehicle's instruments or power components, the operator applies an external force greater than the magnetic attraction force to separate the power plug 1 from the power socket 2 to complete the disassembly. After disassembly, the components can be inspected, maintained, or replaced, and then reassembled and used according to the above connection process.

[0033] By designing the positive pin 102 to have a diameter larger than the negative pin 103 plus a corresponding adapter hole, reverse power connection is prevented from the source. During vehicle maintenance and repair operations, even if the operator accidentally attempts to reverse the connection, it will not be able to be inserted due to the mismatch between the pin and the hole size. This effectively avoids damage to the internal electronic components of the vehicle's instrument panel caused by reverse power connection, reduces maintenance costs and failure risks, and ensures the long-term reliable operation of the instrument system.

[0034] The magnetic adsorption design of the locking and fixing components ensures that the power plug 1 and the power socket 2 remain tightly connected even under complex vehicle operating conditions (such as acceleration, braking, and driving on bumpy roads). Compared with ordinary power components without a locking structure, this can significantly reduce the problems of plug loosening and poor contact caused by vibration, ensure a continuous and stable power supply to the instrument, avoid abnormal instrument display and intermittent functional failure, and improve the reliability of vehicle instrument use and driving experience.

[0035] The magnetic adsorption-assisted plug-in method simplifies the docking operation between the plug and the socket, reduces the installation difficulty and operation time, and has a more obvious advantage when connecting the instrument power supply in the narrow space of the vehicle, thus improving the efficiency of assembly and maintenance.

[0036] The component's structural design is based on the standard power interface size and power supply requirements of vehicle instruments. Under the premise of complying with vehicle electrical system standards, it can be adapted to the power connection scenarios of various vehicle models. As long as the vehicle instrument power interface specifications are matched, this reverse connection protection component can be used. It has a certain degree of universality, which makes it easy for automobile manufacturers and repair shops to apply or replace it in batches, and promotes the standardization and reliability upgrade of vehicle instrument power connection.

[0037] In summary, this instrument reverse connection protection power supply assembly, through its reasonable structural design and component coordination, achieves efficient reverse connection protection, stable connection, and convenient installation in vehicle instrument power connections, providing strong support for the stable operation of vehicle instrument systems and helping to improve the reliability and safety of the overall vehicle electrical system.

[0038] Figures 1-4 As shown, a first magnetic ring 3 is embedded and fixedly connected at the open end of the plug-in housing 101, and a second magnetic ring 4 that cooperates with the first magnetic ring 3 is embedded and fixedly connected at the end of the conductive base 202.

[0039] In the reverse connection protection power supply assembly of this instrument, a first magnetic ring 3 is embedded and fixedly connected at the open end of the plug housing 101, and a second magnetic ring 4, which works in conjunction with the first magnetic ring 3, is correspondingly embedded and fixedly connected at the end of the conductive base 202. During long-term use of the vehicle, the positive plug 203 and the negative plug 2031 will inevitably wear down due to repeated plugging and unplugging, resulting in an increase in the diameter of the plug. At this time, the effect of reverse connection protection relying solely on the size difference between the pin and the plug will be weakened. The first magnetic ring 3 and the second magnetic ring 4 can construct a second line of defense against reverse connection using magnetic force. When connected in the correct direction, opposite magnetic poles attract each other, helping the plug and socket to connect smoothly. Once reverse connection is attempted, like magnetic poles repel each other, generating significant resistance. The operator can sense the abnormal resistance by touch and know in time that the reverse connection is in a state, thereby correcting the operation. This effectively avoids the failure of reverse connection protection due to plug wear, ensures the safety and reliability of the instrument power connection, and reduces the risk of damage to the instrument and vehicle electrical system caused by reverse connection.

[0040] Figures 1-4 As shown, the power plug 1 has symmetrically arranged positioning holes 105 on both sides of the plug housing 101, and the power socket 2 has two symmetrically fixed positioning rods 205 on both sides of the conductive base 202. When the power plug 1 and the power socket 2 are connected, the positioning rods 205 can be accurately inserted into the positioning holes 105 to form a mechanical guiding structure. This structure can pre-position and guide the relative positions of the plug and socket before the pins (including the positive pin 102 and the negative pin 103) and the sockets (positive socket 203 and negative socket 2031) make formal contact, ensuring that the pins... The positioning rod 205 and the positioning socket 105 can be aligned precisely in the correct direction and with the corresponding socket. Even in situations where the operating environment is limited (such as when the space is small and the light is insufficient during vehicle maintenance, making it difficult for operators to accurately observe the position of the pin and the socket) or where there are operational errors, the cooperation between the positioning rod 205 and the positioning socket 105 can effectively prevent the pin from colliding or scratching with the socket due to misalignment or tilting. This protects the structural integrity of the pin, reduces the probability of pin damage, ensures the long-term stable electrical connection performance of the power supply components, reduces instrument power supply failures caused by pin damage, and improves the reliability and service life of the vehicle instrument power connection.

[0041] The positioning rod 205 is longer than the plug housing 101. During the docking process between the power plug 1 and the power socket 2, when the operator holds the plug close to the socket, the longer positioning rod 205 will contact the plug before the positive pin 102 and negative pin 103 in the plug housing 101, and will be the first to insert into the positioning hole 105. It can complete the precise guidance through the cooperation of the positioning rod 205 and the hole before the pins and the hole make contact, ensuring that the relative position of the plug and the socket is in the correct state in the initial docking stage. Even if the operator has a slight angular deviation or positional shift during docking, the positioning rod 205 can automatically correct the direction through cooperation with the positioning hole 105, avoiding collisions and squeezing between the pins and the hole due to misalignment. This further enhances the guiding protection effect, reduces the risk of pin damage, and makes the docking operation smoother and safer.

[0042] The positioning socket 105 has a rounded chamfer 106 at its opening. When the positioning rod 205 approaches the positioning socket 105 during the initial docking phase, the smooth transition surface formed by the rounded chamfer 106 acts as a guide and buffer. Even if there is a slight misalignment between the rod and the socket, the end of the rod can naturally slide into the socket along the curved surface of the rounded chamfer 106. This avoids rod jamming or collision caused by sharp edges of the opening, reduces the precision requirements of the docking operation, and allows operators to more easily complete the docking of the positioning rod 205 and the socket in confined spaces or environments with poor visibility. This reduces mechanical wear during the docking process, improves overall assembly efficiency, and further ensures the accuracy and safety of subsequent docking of the pin and the socket.

[0043] It should be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0044] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. An instrument reverse connection protection power supply assembly, characterized in that, include: A power plug (1) and a power socket (2) that are used together; The plug housing (101) is fixedly connected to the power plug (1); Positive pin (102) and negative pin (103) are symmetrically fixedly connected in the plug housing (101) and electrically connected to the power supply wire harness on the power plug (1); The power socket (2) is provided with a slot (201) that is used in conjunction with the plug-in housing (101); A conductive base (202) is fixedly connected in the slot (201), and the conductive base (202) is electrically connected to the power supply wire harness on the power socket (2); The diameter of the positive electrode pin (102) is larger than the diameter of the negative electrode pin (103); The conductive base (202) is provided with a positive terminal hole (203) and a negative terminal hole (2031) for use with the positive terminal pin (102) and the negative terminal pin (103); A locking and fixing assembly for locking the power plug (1) and the power socket (2) together is installed on the power plug (1) and the power socket (2).

2. The instrument reverse connection protection power supply assembly according to claim 1, characterized in that, The locking and fixing assembly includes a first magnetic block (104) and a second magnetic block (204). The first magnetic block (104) is symmetrically embedded and fixedly connected to the opening end of the plug-in housing (101), and the second magnetic block (204) is symmetrically embedded and fixedly connected to the slot (201).

3. The instrument reverse connection protection power supply assembly according to claim 1, characterized in that, A first magnetic ring (3) is embedded and fixedly connected at the open end of the plug-in housing (101), and a second magnetic ring (4) that works in conjunction with the first magnetic ring (3) is embedded and fixedly connected at the end of the conductive base (202).

4. The instrument reverse connection protection power supply assembly according to claim 1, characterized in that, The power plug (1) is provided with positioning holes (105) symmetrically on both sides of the plug housing (101), and the power socket (2) is provided with two positioning rods (205) symmetrically fixedly connected on both sides of the conductive base (202).

5. The instrument reverse connection protection power supply assembly according to claim 4, characterized in that, The length of the positioning rod (205) is longer than the length of the insertion housing (101).

6. The instrument reverse connection protection power supply assembly according to claim 5, characterized in that, The positioning hole (105) has a circular chamfer (106) at its opening.

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