An OBD extension connecting line

Abstract

The application discloses an OBD extension connecting line, which comprises a joint assembly, a switching circuit assembly, a circuit assembly and an extension assembly, the joint assembly comprises a male joint body, one side of the male joint body is fixedly connected with a trapezoidal socket, and a plurality of metal columns are embeddedly connected in the male joint body. The male joint body in the joint assembly is connected with the whole circuit of the device, a plurality of metal columns are arranged in the male joint body, the metal columns are connected with signals and main power supply, the main power supply is connected with the main power supply circuit through the contact metal wire, the main power supply circuit is connected with the first normally open contact and the second normally open contact, the first normally open contact and the second normally open contact are connected with the circuit connecting coil, the main power supply supplies power, the first normally open contact and the second normally open contact are adsorbed through the coil, the general power circuit is connected, when the main power supply is insufficient, the coil works, the first normally closed contact and the second normally closed contact are closed, and the auxiliary power supply is connected with the power circuit.

Description

Technical Field

[0001] This invention belongs to the field of OBD connection cable technology, and specifically relates to an OBD extension connection cable. Background Technology

[0002] The car's OBD connector has 16 pins, but not all of them are used. This number is due to an international standard; the pins are numbered 1-16 on the wide side. OBD monitors the engine, catalytic converter, particulate filter, oxygen sensor, emission control system, fuel system, EGR, and other systems and components in real time. It then connects to the electronic control unit (ECU) via information from different emission-related components. The ECU can detect and analyze emission-related faults. When an emission fault occurs, it records the fault information and related codes, and issues a warning light to alert the driver. A standard data interface ensures access to and processing of fault information.

[0003] Most existing OBD connectors are simply for signal transmission and power supply. Currently, OBD expansion cables on the market only expand the number of connections. Ordinary OBD cables cannot provide automatic switching between main power and backup power. When the main power is low, they cannot power the device, reducing battery life. Summary of the Invention

[0004] The purpose of this invention is to provide an OBD extension cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an OBD extension connection cable, comprising a connector assembly, a switching circuit assembly, a circuit assembly, and an extension assembly. The connector assembly includes a male connector body, a trapezoidal socket fixedly connected to one side of the male connector body, and multiple metal posts embedded inside the male connector body. The multiple metal posts are disposed inside the trapezoidal socket. Symmetrical metal contacts are movably engaged inside the male connector body. Two contact metal wires are connected to the male connector body, and one end of the two contact metal wires is connected to one end of the two metal posts.

[0006] The switching circuit assembly includes a connecting body and a conversion circuit embedded inside the connecting body, wherein the circuitry inside the conversion circuit is connected to two metal contacts and two contact metal wires respectively.

[0007] The circuit assembly includes a first bus and a second bus, both of which are provided with signal transmission lines and power lines.

[0008] The expansion component includes a first female connector and a second female connector. One end of the first female connector is connected to a plug block, and the plug block has a plug hole inside. One end of the first bus is connected to the first female connector, and one end of the second bus is connected to the second female connector.

[0009] Preferably, a middle plate is fixedly connected to one end of the male connector body, and the middle plate is disposed in the middle of multiple metal columns.

[0010] Preferably, symmetrical buckles are fixedly connected to both sides of the trapezoidal socket, and one end of each buckle is arc-shaped.

[0011] Preferably, the male connector body is connected to symmetrical rubber pads, and the rubber pads are provided with multiple anti-slip grooves.

[0012] Preferably, the conversion circuit includes a coil, a first normally open contact, a second normally open contact, a first normally closed contact, and a second normally closed contact. The input and output terminals of the coil are respectively connected to the connection lines of the first normally open contact and the second normally open contact. The connection lines of the first normally open contact and the second normally open contact are connected to the main power supply line, and the connection lines of the first normally closed contact and the second normally closed contact are connected to the auxiliary power supply line. A first fusible resistor is connected to the connection line of the first normally open contact, and a second fusible resistor is connected to the connection line of the first normally closed contact.

[0013] Preferably, the second female connector is configured the same as the first female connector, the second female connector and the first female connector are connected to the same circuit, and the number of internal insertion holes in the second female connector and the first female connector is the same as the number of metal posts.

[0014] Preferably, both the second female connector and the first female connector are connected with anti-slip rubber, and the second female connector and the first female connector are matched with the input interface of the equipment.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The male connector body in the connector assembly is used to connect the main circuit of the device. Multiple metal pillars are set inside the male connector body. Signal and main power are connected through the metal pillars. The main power is connected to the main power line through the contact metal wire. The main power line is connected to the first normally open contact and the second normally open contact. The first normally open contact and the second normally open contact are connected to the coil. The main power supply provides power. The first normally open contact and the second normally open contact are attracted by the coil and connected to the general power line. When the main power supply is insufficient, the coil works and the first normally closed contact and the second normally closed contact close. The auxiliary power supply is connected to the power line, realizing the automatic switching between the main power supply and the auxiliary power supply and improving the endurance.

[0017] (2) A first fusible resistor and a second fusible resistor are connected to the connection lines of the first normally open contact and the first normally closed contact respectively. When an abnormal overload occurs in the connection lines of the first normally open contact and the first normally closed contact, the first fusible resistor and the second fusible resistor will automatically melt and break, protecting the connected working device and avoiding damage caused by abnormal current. The protection effect is good.

[0018] (3) The male connector body is connected to the first female connector and the second female connector through the first bus and the second bus. The first female connector and the second female connector can realize the synchronous connection of two working devices. The male connector body is connected with a rubber pad to facilitate the insertion and removal of the male connector body by hand. The first female connector and the second female connector are both provided with corresponding anti-slip rubber to facilitate the insertion and removal of the first female connector and the second female connector with the working devices. The use effect is good. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side-view perspective view of the three-dimensional structure of the present invention;

[0021] Figure 3 This is a front view structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the conversion circuit structure of the present invention.

[0023] In the diagram: 1. Connector assembly; 101. Male connector body; 102. Trapezoidal socket; 103. Metal post; 104. Middle plate; 105. Metal contact; 106. Contact metal wire; 107. Snap-fit; 108. Rubber pad; 2. Switching circuit assembly; 201. Connecting body; 202. Conversion circuit; 203. Coil; 204. First normally open contact; 205. Second normally open contact; 206. First fusible resistor; 207. First normally closed contact; 208. Second normally closed contact; 209. Second fusible resistor; 3. Circuit assembly; 301. First bus; 302. Second bus; 4. Expansion assembly; 401. First female connector; 402. Second female connector; 403. Plug-in block; 404. Plug-in hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-4 This invention provides an OBD extension connection cable, including a connector assembly 1, a switching circuit assembly 2, a circuit assembly 3, and an extension assembly 4. The connector assembly 1 includes a male connector body 101, a trapezoidal socket 102 fixedly connected to one side of the male connector body 101, a plurality of metal posts 103 embedded inside the male connector body 101, the plurality of metal posts 103 being disposed inside the trapezoidal socket 102, symmetrical metal contacts 105 being movably engaged inside the male connector body 101, and two contact metal wires 106 connected to the male connector body 101, one end of the two contact metal wires 106 being connected to one end of the two metal posts 103.

[0026] The switching circuit assembly 2 includes a connecting body 201 and a switching circuit 202 embedded inside the connecting body 201. The circuit inside the switching circuit 202 is connected to two metal contacts 105 and two contact metal wires 106 respectively.

[0027] Line component 3 includes a first bus 301 and a second bus 302, both of which are provided with signal transmission lines and power lines;

[0028] The expansion component 4 includes a first female connector 401 and a second female connector 402. One end of the first female connector 401 is connected to a plug block 403. The plug block 403 has a plug hole 404 inside. One end of the first bus 301 is connected to the first female connector 401, and one end of the second bus 302 is connected to the second female connector 402.

[0029] The male connector body 101 inside connector assembly 1 is connected to the input interface. The trapezoidal socket 102 can be installed without mistake to avoid incorrect insertion. Connector assembly 1 is connected inside the device. Multiple metal posts 103 are used for signal input. At the same time, two of the metal posts 103 are connected to the main power supply. Meanwhile, the conversion circuit 202 inside the switching circuit assembly 2 switches the power supply line. The line assembly 3 includes a first bus 301 and a second bus 302. The first bus 301 and the second bus 302 are connected to the corresponding first female connector 401 and the second female connector 402. The first bus 301 and the second bus 302 can expand the connection port. The first female connector 401 and the second female connector 402 are connected to different working elements to realize multi-channel connection and have a wide range of applications.

[0030] In this embodiment, a middle plate 104 is fixedly connected to one end of the male connector body 101, and the middle plate 104 is disposed in the middle of a plurality of metal columns 103.

[0031] Intermediate isolation is achieved through the middle plate 104 inside the male connector body 101, while further preventing mistaken connection.

[0032] In this embodiment, symmetrical buckles 107 are fixedly connected to both sides of the trapezoidal socket 102, and one end of the buckle 107 is arc-shaped.

[0033] The device is connected and snapped together by symmetrical buckles 107 on both sides of the trapezoidal socket 102, which prevents the male connector body 101 from coming off during snapping, ensuring a secure connection and good performance.

[0034] In this embodiment, the male connector body 101 is further provided with symmetrical rubber pads 108, and the rubber pads 108 are provided with multiple anti-slip grooves.

[0035] The symmetrical rubber pads 108 on both sides of the male connector body 101 increase the anti-slip ability, making it easier for the male connector body 101 to be inserted and removed by hand, and the multiple anti-slip grooves on the rubber pads 108 increase the friction.

[0036] In this embodiment, the conversion circuit 202 further includes a coil 203, a first normally open contact 204, a second normally open contact 205, a first normally closed contact 207, and a second normally closed contact 208. The input and output terminals of the coil 203 are respectively connected to the connection lines of the first normally open contact 204 and the second normally open contact 205. The connection lines of the first normally open contact 204 and the second normally open contact 205 are connected to the main power supply line. The connection lines of the first normally closed contact 207 and the second normally closed contact 208 are connected to the auxiliary power supply line. A first fuse resistor 206 is connected to the connection line of the first normally open contact 204, and a second fuse resistor 209 is connected to the connection line of the first normally closed contact 207.

[0037] When the main power supply connected to the device is sufficient, the coil 203 starts, attracting the first normally open contact 204 and the second normally open contact 205, connecting the power line to the main power supply. Two metal contacts 105 are movably engaged on the male connector body 101, and the two metal contacts 105 are connected to the auxiliary power supply. When the main power supply is insufficient, the coil 203 does not work, and the first normally closed contact 207 and the second normally closed contact 208 are connected to the power line. At this time, the auxiliary power supply is turned on, providing power and realizing the conversion between the main power source and the auxiliary power supply.

[0038] In this embodiment, the second female connector 402 is configured the same as the first female connector 401, the second female connector 402 and the first female connector 401 are connected to the same line, and the number of the internal insertion holes 404 of the second female connector 402 and the first female connector 401 is the same as the number of the metal posts 103.

[0039] The second female connector 402 and the first female connector 401, which are configured with the same settings, are connected to different devices to expand the connection of the connected devices. The plug holes 404 inside the second female connector 402 and the first female connector 401 are used to connect signals and power, and to transmit the corresponding signals and power.

[0040] In this embodiment, both the second female connector 402 and the first female connector 401 are further provided with anti-slip rubber, and the second female connector 402 and the first female connector 401 are matched with the device input terminal interface.

[0041] The anti-slip rubber on the second female connector 402 and the first female connector 401 increases friction, making it easier for the hands to connect the second female connector 402 and the first female connector 401, resulting in better performance.

[0042] The working principle and usage process of this invention are as follows: When using the device, the male connector body 101 is grasped by hand and inserted into the connection port of the device. The male connector body 101 has a trapezoidal socket 102 connected to it. The trapezoidal socket 102 can prevent incorrect connection during device connection. Multiple metal posts 103 on the male connector body 101 are connected to corresponding interfaces. Two metal posts 103 are connected to the main power supply, and two metal posts 103 are connected to the main power supply line via contact metal wires 106. Two metal contacts 105 on the male connector body 101 are connected to the auxiliary power supply, and two metal contacts 105 are connected to the auxiliary power supply line. One end of the male connector body 101 is connected to a connecting body 201. A conversion circuit 202 is connected inside the connecting body 201. The conversion circuit 202 is used for switching between the main power supply and the auxiliary power supply. The multiple metal posts 103 inside the male connector body 101 are connected to the signal and main power supplies. The device is connected to the main power supply... When power is sufficient, coil 203 starts, attracting the first normally open contact 204 and the second normally open contact 205, connecting the power line to the main power supply. Two metal contacts 105 are movably latched on the male connector body 101, and these two metal contacts 105 are connected to the auxiliary power supply. When the main power supply is insufficient, coil 203 does not work, and the first normally closed contact 207 and the second normally closed contact 208 are connected to the power line. At this time, the auxiliary power supply is turned on, providing power and realizing the conversion between the main power source and the auxiliary power supply. The first bus 301 and the second bus 302 contain model lines and power supply lines. The first bus 301 and the second bus 302 are respectively connected to the first female connector 401 and the second female connector 402. The first female connector 401 and the second female connector 402 are connected to the connected devices. The plug holes 404 inside the first female connector 401 and the second female connector 402 output corresponding signals and circuits, enabling extended connections and accommodating the access of multiple devices, thus having a wide range of applications.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An OBD extension cable, comprising a connector assembly (1), a switching circuit assembly (2), a line assembly (3), and an extension assembly (4), characterized in that: The connector assembly (1) includes a male connector body (101), a trapezoidal socket (102) is fixedly connected to one side of the male connector body (101), a plurality of metal posts (103) are embedded and connected inside the male connector body (101), the plurality of metal posts (103) are arranged inside the trapezoidal socket (102), symmetrical metal contacts (105) are movably engaged inside the male connector body (101), and two contact metal wires (106) are connected to the male connector body (101), one end of the two contact metal wires (106) is connected to one end of the two metal posts (103); The switching circuit assembly (2) includes a connecting body (201) and a switching circuit (202) embedded inside the connecting body (201). The circuit inside the switching circuit (202) is connected to two metal contacts (105) and two contact metal wires (106). The line assembly (3) includes a first bus (301) and a second bus (302), both of which are provided with signal transmission lines and power lines; The expansion component (4) includes a first female connector (401) and a second female connector (402). One end of the first female connector (401) is connected to a plug block (403). The plug block (403) has a plug hole (404) inside. One end of the first bus (301) is connected to the first female connector (401), and one end of the second bus (302) is connected to the second female connector (402). The conversion circuit (202) includes a coil (203), a first normally open contact (204), a second normally open contact (205), a first normally closed contact (207), and a second normally closed contact (208). The input and output terminals of the coil (203) are connected to the connection lines of the first normally open contact (204) and the second normally open contact (205), respectively. The connection lines of the first normally open contact (204) and the second normally open contact (205) are connected to the main power supply line. The connection lines of the first normally closed contact (207) and the second normally closed contact (208) are connected to the auxiliary power supply line. A first fusible resistor (206) is connected to the connection line of the first normally open contact (204), and a second fusible resistor (209) is connected to the connection line of the first normally closed contact (207).

2. The OBD extension cable according to claim 1, characterized in that: One end of the male connector body (101) is fixedly connected to a middle plate (104), which is located in the middle of multiple metal columns (103).

3. The OBD extension cable according to claim 1, characterized in that: The trapezoidal socket (102) is fixedly connected to two symmetrical buckles (107) on both sides, and one end of the buckle (107) is arc-shaped.

4. An OBD extension cable according to claim 1, characterized in that: The male connector body (101) is connected to symmetrical rubber pads (108), and the rubber pads (108) are provided with multiple anti-slip grooves.

5. An OBD extension cable according to claim 1, characterized in that: The second female connector (402) is configured the same as the first female connector (401), and the second female connector (402) and the first female connector (401) are connected to the same circuit. The number of insertion holes (404) inside the two female connectors (402) and the first female connector (401) is the same as the number of metal pillars (103).

6. An OBD extension connection cable according to claim 1, characterized in that: Both the second female connector (402) and the first female connector (401) are connected with anti-slip rubber, and the second female connector (402) and the first female connector (401) are matched with the input interface of the equipment.

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