Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by the following embodiments, which are taken in conjunction with the accompanying drawings.
Fig. 1 illustrates a vehicle 1000 according to an embodiment of the present invention. As shown in fig. 1, a vehicle 1000 includes a wiring harness 200 and a hub 100.
The vehicle 1000 may be a fuel automobile, an electric vehicle, a new energy automobile, or the like. The vehicle 1000 further includes a vehicle body (not shown), and electric devices 300 and an Electronic Control Unit (ECU) 400 provided in the vehicle body. The electric devices 300 are used to realize functions required for the operation of the vehicle 1000, and for example, the electric devices 300 are an engine, an ABS system, a lamp, a wiper washing system, an audio system, an airbag, a power seat, a seat belt switch, and the like. The electronic control unit 400 is used to control the operation of the electric device 300.
The wire harness 200 is a component in which a contact terminal (connector) punched from a copper material is press-bonded to an electric wire and a cable, and then an insulator is molded or a metal case is added to the outside of the component, and a connection circuit is formed by bundling the components. In the present embodiment, the wire harness 200 is provided in the vehicle body, and can be assembled to the vehicle body by panel fixing, snap fixing, band fixing, pipe clamp fixing, and the like. The numerous electrical devices 300 correspond to the numerous wire harnesses 200, such as an engine wire harness, an ABS system wire harness, a lamp wire harness, a wiper washing system wire harness, an audio system wire harness, an airbag wire harness, an electric seat wire harness, a seatbelt switch wire harness, and the like.
In one embodiment, the wiring harness 200 includes an input wiring harness 210 and an output wiring harness 220, the input wiring harness 210 is used for electrically connecting with the electronic control unit 400, and the output wiring harness 220 is used for electrically connecting with the electric devices 300; when the input harness 210 is docked with the output harness 220, the electronic control unit 400 is electrically connected with the electrical devices 300. In the prior art, an input wire harness 210 and an output wire harness 220 are butted through an inline, once a vehicle model or a functional configuration is changed, the related wire harnesses are redesigned, and the design workload is large.
In one embodiment, the wiring harness 200 on the vehicle 1000 is modular.
Specifically, the wire harness 200 may be divided into a plurality of harness modules, for example: the front radar wiring harness module, the headlight wiring harness module, the front cabin trunk wiring harness module, the front cabin accessory wiring harness module, the engine wiring harness module, the instrument trunk wiring harness module, the instrument accessory wiring harness module, the automobile body trunk wiring harness module, the safety accessory wiring harness module, the ceiling wiring harness module, the door wiring harness module, the rear radar wiring harness module, the rear lamp wiring harness module and the like. Each harness module includes one or more input harnesses 210 and an output harness 220. A plurality of harness modules are each received in the hub 100. In one embodiment, each harness module may be distinguished by a different color of the harness 200. In this way, the wiring harnesses 200 of the vehicle 1000 are divided in a modular manner, and the management workload for a large number of wiring harnesses 200 is reduced.
Fig. 2 to 5 illustrate the hub 100 according to an embodiment of the present invention, wherein the hub 100 is used to electrically connect the input harness 210 and the output harness 220. Specifically, the hub 100 includes a housing 10, a connector 20, a switch module 30, and a control module 40.
The housing 10 serves to fix the connector 20, the switch module 30 and the control module 40. The housing 10 may have a cylindrical or columnar structure, such as a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc. In one embodiment, the housing 10 includes a sidewall 11, and the connection member 20 is disposed on the sidewall 11. In one embodiment, the material of the housing 10 is plastic. For example, at least one of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), Polycarbonate (PC), and Polyimide (PI). That is, the housing 10 may be made of a single plastic material selected from PET, PMMA, PC or PI. In this manner, the housing 10 made of plastic can prevent the electrical circuit within the hub 100 from being shorted.
The number of the connectors 20 is plural, and the plural connectors 20 are each provided on the housing 10 and used to electrically connect the wire harness 200. In the present embodiment, the plurality of connectors 20 is two, three or more, and the plurality of connectors are respectively used for electrically connecting the input harness 210 and the output harness 220 to form an input/output loop. For example, referring to fig. 4, the number of the connecting members 20 is two, and the two connecting members 20 are respectively used for electrically connecting one input harness 210 and one output harness 220 to form an input-output loop. For another example, referring to fig. 6, the number of the connecting elements 20 is four, one connecting element 20 (the first connecting element 21 shown in fig. 6) is electrically connected to one input harness 210, and three plug elements 20 (the second connecting element 22 shown in fig. 6) are electrically connected to three output harnesses 220, respectively, to form three input and output loops; alternatively, three connectors 20 are electrically connected to three input wires 210, and one connector 20 is electrically connected to one output wire 220, so as to form three input/output loops.
In the using process, an assembler can respectively insert the plurality of wiring harness modules into the corresponding connecting pieces 20 according to a preset matching rule. The predetermined assembly rule is to assign different connectors 20 to different harness modules, respectively. Specifically, all the connectors 20 are numbered, and the connectors 20 with different numbers are respectively assigned to different harness modules. For example, connector a and connector b are assigned to the front radar harness module, connector c and connector d are assigned to the headlight harness module, and connector e and connector f are assigned to the front cabin trunk harness module. When a certain wire harness 200 needs to be replaced, only the wire harness 200 needs to be connected into the corresponding connector 20, and a new wire harness 200 does not need to be redesigned to electrically connect the electric device 300 and the electronic control unit 400, so that the design workload is reduced, and the production cost is reduced.
The switch module 30 is disposed in the housing 10 and electrically connected to the plurality of connectors 20, respectively, and the switch module 30 is used for connecting a circuit between at least two connectors 20. When the switch module 30 is in the on state, the two wire harnesses 200 electrically connected to the connection member 20 are butted. When the switch module 30 is in the off state, the wire harness 200 electrically connected to the connector 20 is disconnected from the docking circuit.
Specifically, the switch module 30 is connected in series in one or more input/output loops. In one embodiment, a switch module 30 is connected in series in an input-output loop. Taking fig. 4 as an example, two connecting members 20 form an input/output circuit, and a switch module 30 is connected in series to the input/output circuit; for another example, as shown in fig. 7, four connectors 20 are respectively used for connecting two input harnesses 210 and two output harnesses 220, which form two input and output loops, and each input and output loop is provided with one switch module 30. In another embodiment, the switch modules 30 are connected in series in a plurality of input-output loops. The switch module 10 is electrically connected to a connecting member 20 (shown as a first connecting member 21 in fig. 8) electrically connected to the input harness 210 and a plurality of connecting members 20 (shown as a second connecting member 22 in fig. 8) electrically connected to the output harness 220, respectively, so as to make the plurality of input/output circuits simultaneously conductive or individually conductive. Taking fig. 8 as an example, one connecting element 20 is electrically connected to one input wire harness 210, three plug elements 20 are electrically connected to one output wire harness 220, so as to form three input/output loops, and one switch module 30 is connected in series to the three input/output loops for simultaneously connecting or separately connecting the three input/output loops.
The control module 40 is disposed in the housing 10 and electrically connected to the switch module 30, and the control module 40 is used for controlling the switch module 30 to be turned on and off. In one embodiment, the control module 40 is a chip or a control circuit. In one embodiment, the control module 40 is electrically connected to the electronic control unit 400 through the switch module 30 and the input harness 210 in sequence, and the control module 40 controls the switch module 30 to be turned on and off according to a function control signal of the electronic control unit 400. When the electronic control unit 400 does not send out the function control signal, the control module 40 controls the switch module 30 to be in the off state, and the loop between the input harness 210 and the output harness 220 is disconnected; when the electronic control unit 400 sends out the function control signal, the control module 40 controls the switch module 30 to be conducted according to the function control signal, and the loop between the input harness 210 and the output harness 220 is communicated. Taking the electric device 300 as a turn signal as an example, the electronic control unit 400 is electrically connected to the turn signal through the input harness 210, one connector 20, the switching module 30, the other connector 20, and the output harness 220 in sequence. When receiving the function control signal of the turn signal, the control module 40 controls the switch module 30 to be turned on to electrically connect the input harness 210 and the output harness 220, thereby lighting the turn signal. In another embodiment, the control module 40 is electrically connected directly to the electronic control unit 400.
In the above hub 100, the housing 10 is provided with the connectors 20, the switch module 30 and the control module 40, the switch module 30 is electrically connected to at least two of the connectors 20 and the control module 40, and the switch module 30 is used for communicating a loop between at least two of the connectors 20. When at least two wire harnesses 200 are respectively connected to the connecting member 20, the control module 40 may control the switch module 30 to be turned on or off according to the functions required by the vehicle 1000, so as to connect any two or more input/output circuits, and thus, it is convenient to manage the plurality of wire harnesses 200. In addition, when a certain wire harness 200 needs to be replaced or newly added, the wire harness 200 only needs to be connected into the corresponding or empty connector 20, the new wire harness 200 does not need to be redesigned to electrically connect the electric device 300 and the electronic control unit 400, the structure of the hub 100 does not need to be changed, the design workload is reduced, and the production cost is reduced.
Referring to fig. 2 and 4, in one embodiment, the connector 20 is a connector 23, and the connector 23 includes a connector body 231 and a connection terminal 232. The plug body 231 is inserted through a mounting hole 12 (see fig. 2) formed in the housing 10 and received in the housing 10 for mating with a plug socket of the wire harness 200. The connection terminal 232 is fixedly connected to the plug body 231, one end of the connection terminal 232 is electrically connected to the connection terminal of the wire harness 200, and the other end of the connection terminal 232 is electrically connected to the switch module 30. The plug main body 231 is formed with a stopper 233 at the mounting hole 12, and the stopper 233 serves to restrict the rotation of the wire harness 200 about the plugging direction of the wire harness 200 when the plug main body 231 is mated with the socket of the wire harness 200.
The plug body 231 is entirely or partially housed in the housing 10, and the stopper 233 is provided in the mounting hole 12. The limiting part 233 is one or more grooves formed on the plug main body 231, and when the plug main body 231 is matched with the plug seat of the wire harness 200, the plug seat of the wire harness 200 is clamped with the limiting part 233, so that the position of the wire harness 200 is limited, and the wire harness 200 is prevented from rotating around the plug direction of the wire harness 200 to enable the plug connector 23 to be not tightly connected with the wire harness 200. Of course, in other embodiments, the limiting portion 233 may also be one or more protrusions formed on the plug main body 231.
In one embodiment, the connection terminal 232 is a PIN (PIN). In another embodiment, the connection terminal 232 is a copper terminal.
In one embodiment, the connector 20 may also be a terminal post. The terminals are provided on the case 10 and electrically connected to the switch module 30. In use, the connection terminals of the wire harness 200 are wound around the posts, thereby connecting the wire harness 200 into the circuit of the hub 100.
Referring to fig. 4, in one embodiment, the hub 100 further includes a circuit board 50 and a conductive member 5151, the circuit board 50 is disposed in the housing 10 and electrically connected to the conductive member 51, the switch module 30 and the control module 40 are disposed on the circuit board 50, and the plurality of connecting members 20 are electrically connected to the conductive member 51.
The circuit board 50 may be a printed circuit board or a flexible circuit board. The conductive member 51 can be conductive, such as a wire, a metal sheet, or the like. The connecting members 20 are electrically connected to the conductive members, the conductive member 51 is electrically connected to the circuit board 50, and the switch module 30 and the control module 40 are disposed on the circuit board 50, so that the connecting members 20 can be electrically connected to the switch module 30 sequentially through the conductive member 51 and the circuit board 50. Electrically connecting the connection member 20 and the switch module 30 by means of the circuit board 50 and the conductive member 51 facilitates wiring of the hub 100 and also facilitates fixing of the switch module 30 and the control module 40. In one embodiment, the first connecting member 21 and the second connecting member 22 are electrically connected to the conductive member 51, respectively, and then the conductive member 51 is electrically connected to the circuit board 50.
In another embodiment, at least two connectors 20 may also be electrically connected to the switch module 30 by direct wires.
In one embodiment, the switch module 30 is an analog switch. The analog switch comprises a controlled end, a first controlled switch end and a second controlled switch end, wherein the controlled end is electrically connected with the control module 40, and the first controlled switch end and the second controlled switch end are respectively electrically connected with different connecting pieces 20.
The analog switch is a switch for controlling a signal path by using characteristics of an analog device (e.g., a Junction Field-Effect Transistor (JFET)) or a Semiconductor Field-Effect Transistor (MOSFET)), and is mainly used for completing a switching function of connecting or disconnecting a signal link. Specifically, the analog switch is a tristable circuit, which can determine the connection state of the first controlled switch terminal and the second controlled switch terminal according to the level of the controlled terminal. When the controlled end is in an enabling state, the first controlled switch end and the second controlled switch end are in a conducting state; when the controlled end is in a non-enabled state, the first controlled switch end and the second controlled switch end are in a blocking state, and at the moment, no matter how the input signal in the first controlled switch end changes, the output of the analog switch is in a high-resistance state. In one embodiment, the first controlled switch terminal is electrically connected to the first connecting member 21, and the second controlled switch terminal is electrically connected to the second connecting member 22.
Because the analog switch has the characteristics of low power consumption, high speed, no mechanical contact, small volume, long service life and the like, after the control module 40 controls the analog switch to be conducted, the electric connection between the input wiring harness 210 and the output wiring harness 220 can be quickly realized. When a certain wiring harness 200 is replaced, the control module 40 can also control the analog switch to quickly disconnect the wiring harness loop. For example, when the output harness 220 is replaced and plugged, the control module 40 may control the analog switch to quickly disconnect the input harness 210 from the original output harness 220, and to connect the input harness 210 to the new output harness 220.
In another embodiment, the switch module 30 may also be an electronic switch. The controlled terminal of the electronic switch controls the first controlled switch terminal and the second controlled switch terminal to be switched on or off according to the electrical signal provided by the control module 40.
In another embodiment, the switch module 30 may also be a relay.
Referring to fig. 2 and 4, in one embodiment, the housing 10 further includes a top wall 13, the top wall 13 and the side wall 11 together form a receiving groove 14, and the switch module 30 and the control module 40 are received in the receiving groove 14. The hub 100 further includes a protective cover 60, wherein the protective cover 60 is coupled to the sidewall 11 and used for covering the receiving slot 14.
The protective cover 60 provides protection against water, dust, and the like for the switch module 30, the circuit board 50, and the control module 40 disposed in the receiving groove 13. In addition, the protective cover 60 is also detachable, and when any one of the connectors 20 or the internal circuit board 50 is out of order, the protective cover 60 can be detached from the detachable case 10, thereby replacing the failed part.
Referring to fig. 2 and 4, in one embodiment, the housing 10 further includes a top wall 13, the top wall 13 and the side wall 11 together form a receiving groove 14, and the switch module 30 and the control module 40 are received in the receiving groove 14. The hub 100 further includes a fastener 70, the fastener 70 being disposed on the top wall 13 and serving to fix the housing 10 to the body of the vehicle 1000.
The fixing member 70 is fixedly coupled to the housing 10. In the using process, after the input wire harness 210 and the output wire harness 220 are respectively connected into the corresponding connecting pieces 20, the hub 100 can be fixed on the vehicle body only by fixing the fixing piece 70 on the vehicle body of the vehicle 1000, and the input wire harness 210 and the output wire harness 220 can be fixed on the vehicle body in a centralized manner. The fixing member 70 may be one or more of a snap structure, a bolt structure and a limiting hole, and the fixing manner of the fixing member 70 and the vehicle body includes, but is not limited to, a snap connection, a bolt connection or an adhesive connection.
Specifically, taking fig. 4 as an example, in one embodiment, the fixing element 70 is a fastening element 71, and the fastening element 71 includes a body 711 and a fixing portion 712 that are fixedly connected. The body 711 is provided on the housing 10, and the fixing portion 712 is provided on the body 711 in a reverse-buckling shape and is adapted to be snapped into the body of the vehicle 1000.
When the hub 100 is fixed to the vehicle body, the housing 10 of the hub 100 can be fixed to the vehicle body of the vehicle 1000 by inserting the fixing portion 712 into a metal plate or a plastic member of the vehicle body. In one embodiment, the body 711 and the fixing portion 712 are integrally formed, and the latch 71 is integrally formed with the housing 10.
Referring to fig. 3 and 4, in one embodiment, the connecting member 20 includes a first connecting member 21 and a second connecting member 22, the housing 10 includes a sidewall 11, the first connecting member 21 and the second connecting member 22 are disposed on the sidewall 11, the first connecting member 21 is used for electrically connecting the input harness 210, and the second connecting member 22 is used for electrically connecting the output harness 220.
In use, the input harness 210 is coupled to the first connector 21 and the output harness 220 is coupled to the second connector 22. The control module 40 controls the switch module 30 to be conducted, and the input and output loops of the input harness 210, the first connector 21, the second connector 22 and the output harness 220 are conducted, so that the electronic control unit 400 and the electric device 300 are electrically connected. In this way, the input wire harnesses 210 are collected to the hub 100 through the first connector 21, and the output wire harnesses 220 are collected to the hub 100 through the second connector 22, so that the management of the plurality of wire harnesses 200 is facilitated.
In one embodiment, the first connector 21 and the second connector 22 are I/O interfaces. When the electronic control unit 400 is connected to the electric device 300 sequentially through the input harness 210, the hub 100 and the output harness 220, the electronic control unit 400 is in communication connection with the electric device 300, the electronic control unit 400 may send a control signal to the electric device 300, and the electric device 300 may also feed back an electric signal to the electronic control unit 400.
In one embodiment, the first connecting member 21 and the second connecting member 22 have different marks, such as color marks, text marks, and the like. The input harness 210 is connected to the first connector 21 according to the mark, and the output harness 220 is connected to the second connector 22 according to the mark, so that the assembling personnel can conveniently and quickly connect the input harness 210 and the output harness 220 to the hub 100.
Referring to fig. 3, in one embodiment, there is one first connecting member 21 and one second connecting member 22. An input and output loop is formed between the first connecting piece 21 and the second connecting piece 22.
Referring to fig. 7, in one embodiment, the first connecting members 21 are multiple, the first connecting members 21 have the same size, the second connecting members 22 are multiple, and the second connecting members 22 have the same size.
A plurality of input and output loops are formed between the plurality of first connectors 21 and the plurality of second connectors 22. If the number of the first connecting elements 21 is N, the number of the second connecting elements 22 is M, and N, M are all natural numbers greater than 1, where N and M may be equal or different, then N × M input/output loops are formed between the first connecting elements 21 and the second connecting elements 22. Since the plurality of first connectors 21 have the same size and the plurality of second connectors 22 have the same size, the plurality of first connectors 21 can be adapted to the input harnesses 210 of different vehicle types or the input harnesses 210 of different configurations of the same vehicle type, and the plurality of second connectors 22 can be adapted to the output harnesses 220 of different vehicle types or the output harnesses 220 of different configurations of the same vehicle type, so that the commonality of the hub 100 and the commonality of the harnesses 200 are improved.
In one embodiment, the sidewall 11 is a plurality of sub-sidewalls 111, and the first connecting member 21 and the second connecting member 22 are disposed on the same sub-sidewall 111.
In another embodiment, the sidewall 11 is a plurality of sub-sidewalls 111, and the first connecting member 21 and the second connecting member 22 are respectively disposed on different sub-sidewalls 111.
The different sub-sidewalls 111 may be two opposite sub-sidewalls of the casing 10, or two adjacent sub-sidewalls of the casing 10. In this manner, the input harness 210 and the output harness 220 can be flexibly mounted to the hub 100.
Specifically, taking fig. 4 as an example, the casing 10 is a quadrangular prism, and two opposite sub-sidewalls are respectively provided with a first connecting piece 21 and a second connecting piece 22. Of course, in other embodiments, a plurality of first connectors 21 may be disposed on each sub-sidewall 111, and a plurality of second connectors 22 may be disposed on each second sub-sidewall. Further, taking the housing 10 as a triangular prism as an example, the first sub-sidewall 141 and the second sub-sidewall 142 are two adjacent sub-sidewalls. Since the position of the first connecting member 21 and the position of the second connecting member 22 are related to the shape of the housing 10, the embodiments of the present invention are all included as long as the reasonable position setting of the housing 10 and the connecting member 20 of the hub 100 is satisfied, and no further limitation is made herein.
Referring to fig. 6, in one embodiment, the number of the second connecting members 22 is multiple, the number of the switch modules 30 is multiple, and the plurality of second connecting members 22 correspond to the plurality of switch modules 30 one to one. The number of the first connecting pieces 22 is one, the first connecting pieces 21 are electrically connected with the plurality of switch modules 30, and the plurality of switch modules 30 are respectively electrically connected with the corresponding plurality of second connecting pieces 22.
The number of the switching modules 30 is plural, and each switching module 30 corresponds to one input/output circuit of the electronic control unit 400 and the electric device 300. As shown in fig. 6, the number of the first connection members 21 is one, the number of the switch modules 30 is three, and the number of the second connection members 22 is three. The control module 40 is electrically connected with the three switch modules 30 respectively, and a first connecting piece 21 is electrically connected with a second connecting piece 22a through the switch module 30a to realize the connection of the loops L1 of the input wiring harness 210 and the output wiring harness 220 a; the switch module 30b is electrically connected with the second connecting piece 22b, so that the input wiring harness 210 and the loop L2 of the output wiring harness 220b are connected; the switch module 30c is electrically connected to the second connector 22c to electrically connect the output harness 220c, and the input harness 210 and the output harness 220c are connected to each other through the loop L3. In this manner, each input and output circuit is independent of each other, and one electronic control unit 400 can individually control one electric device 300.
Referring to fig. 7, in one embodiment, the number of the second connecting members 22 is multiple, the number of the switch modules 30 is multiple, and the plurality of second connecting members 22 correspond to the plurality of switch modules 30 one to one. The number of the first connecting pieces 21 is multiple, and the multiple first connecting pieces 21 correspond to the multiple second connecting pieces 22 one by one; the plurality of first connectors 21 are electrically connected to the corresponding plurality of switch modules 30, and the plurality of switch modules 30 are electrically connected to the corresponding plurality of second connectors 22.
In the present embodiment, the plurality is two, three, four, or four or more. The number of the switching modules 30 is plural, and each switching module 30 corresponds to one input/output circuit of the electronic control unit 400 and the electric device 300. As shown in fig. 7, the number of the first connection members 21 is two, the number of the switch modules 30 is two, and the number of the second connection members 22 is two. The first connector 21a is electrically connected to the second connector 22a through the switch module 30a to realize loop connection of the input harness 210a and the output harness 220 a. The first connector 21b is electrically connected to the second connector 22b through the switch module 30b to realize the loop connection of the input harness 210b and the output harness 220 b. In this manner, each input and output circuit is independent of each other, and one electronic control unit 400 can individually control one electric device 300.
Referring to fig. 8, in one embodiment, the number of the first connecting members 21 is one, the number of the switch modules 30 is one, and the number of the second connecting members 22 is plural; the switch module 30 corresponds to a plurality of second connectors. The first connecting member 21 is electrically connected to the switch module 30, and each of the switch modules 30 is electrically connected to the corresponding second connecting member 22.
In the present embodiment, the plurality is two, three, four, or four or more. As shown in fig. 8, the number of the first connecting members 21 is one, the number of the switch modules 30 is one, and the number of the second connecting members 22 is three. The first connection 21 corresponds to three input and output circuits of the electronic control unit 400 and the electric device 300. The control module 40 is electrically connected to the switch module 30, and the first connector 21 is electrically connected to the second connector 22a, the second connector 22b, and the second connector 22c through the same switch module 30, so as to connect the loops L1 of the input harness 210 and the output harness 220a, the loops L2 of the input harness 210 and the output harness 220b, and the loops L3 of the input harness 210 and the output harness 220c, respectively.
In the using process, the input wiring harness 210 electrically connected with the electronic control unit 400 is connected into the first connecting piece 21, the output wiring harness 220 electrically connected with three different electric devices 300 is electrically connected with the second connecting piece 22, the control module 40 sends out different function control signals according to the electronic control unit 400 to determine the electric device 300 to be controlled, and controls the switch module 30 on the corresponding input and output loop to be conducted, so that the first connecting piece 21 and the second connecting piece 22 on the corresponding loop are conducted, and the electronic control unit 400 is connected with the electric device 300 to be controlled.
Continuing with the previous example of the headlights (high beam, turn signal, dipped headlight), when the electronic control unit 400 sends a turning control signal, the control module 40 controls the switch module 30 to switch on the circuit corresponding to the turning function, so as to turn on the turn signal; when the high beam control signal is sent by the electronic control unit 400, the control module 40 controls the switch module 30 to switch on the loop corresponding to the high beam function, so as to light the high beam; when the low beam control signal is sent by the electronic control unit 400, the control module 40 controls the switch module 30 to switch on the circuit corresponding to the low beam function, so as to turn on the low beam.
Thus, when a certain output harness 220 needs to be replaced, the control module 40 only needs to change the loop connection in the hub 100, and does not need to change the connection between the input harness 210 and the first connector 210. In addition, when a certain output harness 220 is newly added, the control module 40 can change the state of the switch module 30 only by connecting the output harness 220 into the empty second connecting piece 22, match the input harness 210 corresponding to the output harness 220, and does not need to redesign the new output harness 220, thereby reducing the design workload and the production cost.
In another embodiment, the number of the first connectors 21 is plural, the number of the switch modules 30 is plural, and the number of the second connectors 22 is plural; the plurality of first connecting pieces 21 correspond to the plurality of switch modules 30 one to one, and each switch module 30 corresponds to the plurality of second connecting pieces 22. The plurality of first connectors 21 are electrically connected to the corresponding plurality of switch modules 30, and the plurality of switch modules 30 are electrically connected to the corresponding plurality of second connectors 22.
The number of the first connecting pieces 21 is the same as that of the switch modules 30, the first connecting pieces correspond to the switch modules 30 one by one, the number of the second connecting pieces 22 is larger than that of the first connecting pieces 21 and that of the switch modules 30, and each switch module 30 corresponds to a plurality of the second connecting pieces 22. Referring to fig. 1 and 8 together, when the hub 100 is electrically connected to the input harnesses 210 of a plurality of electronic control units 400, for example, one harness module corresponds to one electronic control unit 400, or a plurality of harness modules correspond to one electronic control unit 400, each electronic control unit 400 corresponds to one first connecting member 21, one switch module 30, and a plurality of second connecting members 22, by adding a corresponding number of first connecting members 21 and switch modules 30 on the basis of fig. 8. In this way, the control module 40 sends different function control signals according to different electronic control units 400 to determine the electric device 300 to be controlled, and controls the switch module 30 on the corresponding input/output circuit to be turned on, so as to turn on the first connecting element 21 and the second connecting element 22 of the corresponding circuit, thereby realizing the connection between the electronic control unit 400 and the electric device 300 to be controlled.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.