Circuit signal switching device and electronic equipment

Abstract

The utility model discloses a circuit signal switching device and electronic equipment, and relates to the field of electronic circuits. The device comprises a signal circuit, wherein a plurality of end points used for circuit signal communication are arranged on the two sides of the disconnection position of the signal circuit respectively; the communication circuit is arranged in the signal circuit, and first pins are arranged at the two ends of the communication circuit; wherein the first pin is connected with end points on the two sides of the disconnected part, and the connection relation is fixed; the switching circuit is arranged on the communication circuit, and a wiring layer and second pins on the two sides are arranged in the switching circuit; wherein the wiring layer comprises a connecting circuit between the second pins on the two sides and a parallel circuit between the second pins on the same side, and the second pins are connected with the first pins respectively. Based on the structure, the wiring layer is used for controlling the connection relation between the end points at the two ends of the disconnection position, and switching between circuit signals is achieved. Meanwhile, the circuit signals are transmitted through the interconnection pins of a mechanical structure, and the overcurrent capacity of the circuit signal switching device can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of electronic circuits, and particularly relates to a circuit signal switching device and an electronic device. Background Art

[0002] When the same interface in a circuit has different definitions, it is necessary to adjust the signal connection relationship between the interface and the electronic devices in the circuit according to different definitions, that is, to perform circuit signal switching. Among them, different definitions represent different types of signals or the same type of signals with different values, such as a power supply current signal and a data transmission signal, or a 10A current signal and a 1A current signal.

[0003] When performing circuit signal switching, mechanical switches or chip switches are usually used. Among them, mechanical switches can pass relatively large voltages and currents, but the number of signal paths of mechanical switches is small, generally only capable of two-way switching, and some mechanical switches can achieve multi-way switching, but they have a large volume. Chip switches can achieve multi-way signal switching and can automatically complete the switching operation through programming, but the voltage or current bearing capacity of the chips is weak and the applicable range is narrow.

[0004] Therefore, there is an urgent need for a circuit signal switching device to solve the above problems. Summary of the Utility Model

[0005] A circuit signal switching device and an electronic device proposed by the utility model are used to solve the problems of large occupied area and weak voltage and current bearing capacity in the existing circuit signal switching device.

[0006] To achieve the above object, the utility model proposes the following technical solutions:

[0007] In the first aspect of the utility model, a circuit signal switching device is provided, including:

[0008] A signal circuit, with multiple endpoints for circuit signal connection respectively arranged on both sides of the disconnection of the signal circuit;

[0009] A connection circuit arranged in the signal circuit, with first pins arranged at both ends of the connection circuit; wherein, the first pins are connected to the endpoints on both sides of the disconnection, and the connection relationship is fixed;

[0010] A transfer circuit arranged on the connection circuit, with a wiring layer and second pins on both sides arranged inside the transfer circuit;

[0011] Among them, the wiring layer includes a connection line between the second pins on both sides and a parallel line between the second pins on the same side, and the second pins are respectively connected to the first pins to connect the endpoints on both sides of the disconnection and are used to adjust the connection relationship between the endpoints on both sides of the disconnection.

[0012] Optionally, the combination of the connection circuit and the adapter circuit includes a connector and an adapter board, a circuit slot and a PCIE gold finger.

[0013] Optionally, the signal circuit is disposed on a circuit board.

[0014] Optionally, one end of the endpoint at the break of the signal circuit is connected to the input interface of the circuit board for receiving an external input signal; the other end of the break is connected to an electronic device on the circuit board for transmitting the external input signal to the corresponding electronic device.

[0015] Optionally, the connection of the first pin to the endpoints on both sides of the break includes that a plurality of first pins are connected in parallel to one endpoint.

[0016] Optionally, a slot opening is provided in the connection circuit; wherein, the adapter circuit is plugged into the connection circuit through the slot opening.

[0017] Optionally, the tail of the first pin extends into the slot opening so that when the adapter circuit is plugged into the connection circuit, the second pin is connected to the first pin.

[0018] Optionally, the second pin is serially connected to the first pin.

[0019] Optionally, the adapter circuit further includes a board body; second pins and wiring layers are provided on both sides of the board body; wherein, the wiring layers on both sides of the board body are connected through a metal medium penetrating the board body.

[0020] In a second aspect of the present invention, an electronic device is provided, including the circuit signal switching device described in the first aspect above.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention provides a circuit signal switching device, including: a signal circuit, on both sides of the break of the signal circuit, a plurality of endpoints for circuit signal connection are respectively provided; a connection circuit, disposed in the signal circuit, and first pins are provided at both ends of the connection circuit; wherein, the first pins are connected to the endpoints on both sides of the break, and the connection relationship is fixed; an adapter circuit, disposed on the connection circuit, and a wiring layer and second pins on both sides are provided in the adapter circuit; wherein, the wiring layer includes a connection line between the second pins on both sides and a parallel line between the second pins on the same side, and the second pins are respectively connected to the first pins to connect the endpoints on both sides of the break and are used to adjust the connection relationship between the endpoints on both sides of the break.

[0023] Based on the above structure, the circuit signal switching device provided by the present utility model utilizes the combination of a connection circuit and a transfer circuit to achieve the connection of the two ends of the signal circuit disconnection point, ensuring the normal transmission of circuit signals. At the same time, the connection relationship between the two ends of the disconnection point is controlled by the connection lines and parallel lines in the wiring layer to achieve the switching between circuit signals. In addition, this device uses mechanically structured interconnect pins to transmit circuit signals, which can effectively improve the stability of the transmission line and the over-current capacity of the circuit signal switching device. Description of the Drawings

[0024] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0025] Figure 1 is a schematic structural diagram of a circuit signal switching device provided by the present utility model;

[0026] Figure 2 is an exploded view of a circuit signal switching device provided by the present utility model;

[0027] Figure 3 is a top view of a circuit signal switching device provided by the present utility model;

[0028] Figure 4 is a schematic structural diagram of a transfer board provided by the present utility model;

[0029] Figure 5 is a schematic structural diagram of a connector provided by the present utility model;

[0030] Figure 6 is a cross-sectional view of a connector provided by the present utility model;

[0031] Figure 7 is a schematic connection circuit diagram of a circuit signal switching device provided by the present utility model.

[0032] In the figure: 1 - signal circuit; 2 - connection circuit; 3 - transfer circuit; 4 - circuit board; 11 - input interface; 12 - end point; 13 - electronic device; 21 - first pin; 22 - housing; 23 - fixing member; 24 - slot opening; 31 - second pin; 32 - board body; 33 - wiring layer; 34 - through hole. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the existing circuit structure, in order to implement the switching of different circuit signals, mechanical switches or chip switches are usually adopted. When the mechanical switch is a DIP switch or a rotary switch, although the signal switching can be relatively easily achieved. However, for example, in the case of a DIP switch, generally only one-to-two switching can be achieved, and multi-to-one switching cannot be achieved. While the rotary switch can achieve multi-to-one switching, the volume of the rotary switch is relatively large, occupying a relatively large area of the circuit board.

[0035] When the chip switch is a multiplexer, although the signal switching can be conveniently controlled by a program, generally, the multiplexer cannot simultaneously meet signals such as high voltage, high speed, and large current. If the interface in the circuit structure simultaneously has a power signal and a high-speed signal, and the signal transmission type is bidirectional transmission, then a general-purpose multiplexer chip switch cannot be found.

[0036] To solve the above problems, as Figures 1-4 shown, the present utility model provides a circuit signal switching device, including:

[0037] A signal circuit 1, with a plurality of endpoints 12 for circuit signal connection respectively arranged on both sides of the disconnection point of the signal circuit 1.

[0038] A connection circuit 2, arranged in the signal circuit 1, with first pins 21 arranged at both ends of the connection circuit 2. Among them, the first pins 21 are connected to the endpoints 12 on both sides of the disconnection point, and the connection relationship is fixed.

[0039] A transfer circuit 3, arranged on the connection circuit 2, with a wiring layer 33 and second pins 31 on both sides arranged inside the transfer circuit 3.

[0040] Among them, the wiring layer 33 includes connection lines between the second pins 31 on both sides and parallel lines between the second pins 31 on the same side. The second pins 31 are respectively connected to the first pins 21 to connect the endpoints 12 on both sides of the disconnection point and are used to adjust the connection relationship between the endpoints 12 on both sides of the disconnection point.

[0041] Based on the above structure, the circuit signal switching device provided by the utility model utilizes the combination of the connection circuit 2 and the transfer circuit 3 to achieve the connection of the two endpoints 12 at both ends of the disconnection of the signal circuit 1, ensuring the normal transmission of the circuit signal. At the same time, the connection relationship between the two endpoints 12 at the disconnection is controlled by the connection lines and parallel lines in the wiring layer 33 to achieve the switching between circuit signals. In addition, the device uses mechanical structure type interconnection pins to transmit circuit signals, which can effectively improve the stability of the transmission line and the over-current capacity of the circuit signal switching device.

[0042] The signal circuit refers to a communication circuit composed of an interface, a data transmission line, and electronic devices. In one implementation, the signal circuit 1 is disposed on the circuit board 4, and the circuit board 4 is usually a PCB (Printed Circuit Board). One end of the signal circuit 1 (set as the signal A end in the utility model) is usually the input interface 11 of the circuit board 4, and the other end (set as the signal B end in the utility model) is usually connected to the electronic components 13 inside the circuit board 4. Among them, the number of the input interfaces 11 can be one or more, and the type is not limited, such as it can be a power signal, a transmission signal, etc.

[0043] Assume that on the PCB board, the signal A end includes signals A1, A2, A3, A4..., and the signal B end includes signals B1, B2, B3, B4.... The above signal types include power signals such as VCC power supply and GND ground, and also include various input signals, output signals, or bidirectional signals. Among them, the signals at the signal B end are usually fixed, while the signals at the signal A end may be different according to the actual usage scenarios because they are connected to the external input interface 11 of the circuit board 4. Therefore, the circuit signal switching device provided by the utility model is required to switch the connection relationship between the signal A end and the signal B end under different usage scenarios.

[0044] The disconnection of the signal circuit 1 is usually disposed inside the circuit board 4, and the number of the endpoints 12 for circuit signal connection on both sides of the disconnection may be the same or different. Among them, one endpoint 12 at one end of the disconnection of the signal circuit 1 (i.e., the signal A end in the utility model) is connected to the input interface 11 of the circuit board 4 for receiving external input signals; the other endpoint 12 at the other end of the disconnection (i.e., the signal B end in the utility model) is connected to the electronic device 13 on the circuit board 4 for transmitting the external input signals to the corresponding electronic device 13.

[0045] In some embodiments, the combination of the connecting circuit 2 and the transfer circuit 3 includes a connector and a transfer board, a circuit slot and a PCIE (Peripheral Component Interconnect Express) gold finger. That is, the connecting circuit 2 is a combination of a connector and the transfer circuit 3 is a transfer board, or the connecting circuit 2 is a circuit slot and the transfer circuit 3 is a combination of a PCIE gold finger.

[0046] The following uses the combination of a connector and an adapter board (i.e., the connection circuit 2 is a connector and the adapter circuit 3 is an adapter board) as an example to illustrate the circuit signal adapter device provided by the utility model. The connector is usually an inter-board connector, such as Figures 5-6 As shown, the connector includes a first pin 21, a shell 22 and a fixing plate 23. The shell 22 is usually made of a material that is resistant to high temperature, corrosion, high strength and has good electrical insulation properties, including plastics, ceramics and composite materials. For example, the composite material can be carbon fiber reinforced plastic and glass fiber reinforced plastic. The first pin 21 is arranged inside the shell 22 and distributed on both sides of the shell 22. The material is usually an alloy or metal with good conductivity and mechanical strength, and the shape is mostly a bent needle pin. The top of the first pin 21 extends to the outside of the shell 22 shell, and is used to connect with the endpoints 12 on both sides of the disconnection point of the signal circuit 1. The fixing member 23 is also arranged in the shell 22, fixedly connected to the shell 22, and is used to fix the connector 2 on the surface of the circuit board 4 to prevent the connector 2 from moving, thereby improving the stability of the connection between the first pin 21 and the endpoint 12.

[0047] In some embodiments, a slot 24 is provided on the upper surface of the housing 22. The adapter board is inserted into the connector through the slot 24. Figure 6 As shown, the tail of the first pin 21 extends into the slot 24, so that when the adapter board is plugged into the connector, the second pin 31 is connected to the first pin 21. The second pin 31 is connected in series with the first pin 21, that is, they are in one-to-one contact.

[0048] The structure of the adapter board is as follows Figure 4As shown, the adapter board includes a second pin 31, a board body 32, and a wiring layer 33. Among them, the board body 32 is usually a cuboid with a relatively thin thickness, and the second pin 31 is a metal patch provided on both sides of the board body 32. The wiring layer 33 represents the set of connection lines between the second pins 31, including the connection lines between the second pins 31 on both sides and the parallel lines between the second pins 31 on the same side, etc. The wiring layer 33 can be provided on the two side surfaces of the board body 32 or in the interlayer of the board body 32 with a multi-layer structure. Among them, the wiring layers 33 on both sides of the board body 32 are connected through a metal medium penetrating the board body 32. Specifically, a plurality of through holes 34 are provided on the board body 32, and some of the through holes 34 are filled with conductive metal for conducting the connection lines in the wiring layer 33.

[0049] In some embodiments, the adapter board is inserted into the slot opening 24 of the connector, the second pin 31 is connected to the first pin 21, and the endpoints 12 at both ends of the disconnected signal circuit 1 are connected through the combination of the connector and the adapter board. Specifically, the two endpoints 12 form a connected circuit through the first pin 21 in the connector, the second pin 31 of the adapter board, and the wiring layer 33.

[0050] In one implementation, since the wiring layer 33 includes the connection lines between the second pins 31, the connection relationship between the endpoints 12 on both sides of the disconnection can be controlled through the wiring layer 33 to achieve the switching of the circuit signals in the signal circuit 1. Specifically, the connection relationship between the endpoints 12 on both sides of the disconnection can be adjusted by changing the connection relationship of the connection lines in the wiring layer 33 inside the adapter board. Or, a plurality of adapter boards with different wiring layers 33 are provided, and the connection relationship between the endpoints 12 on both sides of the disconnection is changed by switching different adapter boards.

[0051] In actual work, a signal circuit 1 including a disconnection is provided on the PCB board, the connector is embedded in the disconnection, the first pins 21 at both ends of the connector are respectively connected to the signal A end and the signal B end of the disconnection, and the adapter board is inserted on the connector. As Figure 7As shown in the figure. Among them, the connection relationship between the connector and the two endpoints 12 at the disconnection is fixed, but the specific connection method is not limited. It only needs to meet the signal transmission requirements in the signal circuit 1 in terms of the overcurrent capacity and transmission speed of the first pin 21 in the connector. If it is assumed that the signals at the A end of the signal include A1, A2, A3, A4... and the signals at the B end of the signal include B1, B2, B3, B4.... The signals at the A end and the B end of the signal are converged onto the adapter board through the connector, and based on the wiring layer 33 on the adapter board, the signals at the A end and the B end of the signal are connected through a determined corresponding relationship. Since there is more than one connection relationship between the signals A1, A2, A3, A4... and the signals B1, B2, B3, B4..., multiple adapter boards with different wiring layers 33 can be set. Each time the circuit signal connection relationship between the two endpoints 12 on both sides of the disconnection is switched, only the corresponding adapter card needs to be inserted into the connector. Among them, the number of connection relationships is not limited, including one-to-one, one-to-many, many-to-one, or many-to-many. At the same time, the connection order of the two endpoints 12 on both sides in the connection relationship can also be adjusted according to the different wiring layers 33. In addition, the applicable scenarios and connection relationships can be marked on the board body 32 of the adapter card by silk screening, so as to facilitate technicians to confirm and use.

[0052] Based on the above settings, the circuit signal switching device is mechanically connected through the connector and the adapter board, and the circuit slot and the PCIE gold finger. Compared with the multiplexer, it not only has a higher overcurrent capacity, but also has stronger stability of the transmission line. In addition, based on the high-speed and bidirectional transmission characteristics of the connector or the PCIE gold finger, the circuit signal switching device can meet the high-speed and bidirectional signal transmission requirements on the basis of realizing the circuit signal switching. For example, since this solution uses a connector and an adapter board to achieve signal connection, as long as the width of the pin trace is sufficient, it can theoretically withstand higher voltages and currents, and there is no limit to the signal transmission direction. Compared with some switching circuits built with switching chips or MOS transistors, their bandwidths are limited, but in this solution, as long as the performance of the connector is sufficient, it can also carry high-speed transmission signals. In addition, the circuit signal switching device in this case occupies a smaller area on the circuit board 4 compared with the mechanical switch.

[0053] In some embodiments, multiple first pins 21 of the connector can be connected in parallel to the same endpoint 12 to improve the overcurrent capacity of the circuit signal switching device. It should be noted that the more the number of parallel pins, the greater the overcurrent capacity.

[0054] In addition, if the circuit signals transmitted in the signal circuit 1 have requirements for impedance, then it is necessary to control the impedance of the connector and the trace impedance of the wiring layer 33 on the adapter board within a reasonable range.

[0055] Specifically, assume that there is a 4-pin terminal on a PCB board, and the pin definitions of the 4-pin terminal vary according to the access device. Assume that there are a total of 3 pin definitions for the 4-pin terminal, namely VCC, IN1, OUT1, GND; VCC, IN1, IN2, GND; and IN1, IN2, OUT2, GND. At the signal A end, there are signals VCC, IN1, IN2, OUT1, OUT2, GND, and at the signal B end, there are signals B1, B2, B3, B4. The above signals are all connected to the adapter board through connectors. Among them, the first adapter board connects the signals VCC, IN1, OUT1, GND to the signals B1, B2, B3, B4 respectively, the second adapter board connects the signals VCC, IN1, IN2, GND to the signals B1, B2, B3, B4 respectively, and the third adapter board connects the signals IN1, IN2, OUT2, GND to the signals B1, B2, B3, B4 respectively. In theory, only 10 of the first pins 21 of the connector are enough, but in fact, the number of the first pins 21 of the connector is more. If the supply current of the VCC power supply is 5A and the current-carrying capacity of one pin of the connector is 1A, then the two signals of VCC and GND can be respectively connected in parallel with 5 first pins 21 to meet the requirements of the supply current signal.

[0056] In the description of this specification, the descriptions referring to the terms "an embodiment", "example", "specific example", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A circuit signal switching device, characterized in that: include: A signal circuit, wherein a plurality of endpoints for connecting circuit signals are respectively arranged on both sides of a disconnection point of the signal circuit; A connecting circuit is arranged in the signal circuit, and first pins are arranged at both ends of the connecting circuit; wherein the first pins are connected to the endpoints at both sides of the disconnection, and the connection relationship is fixed; A switching circuit is arranged on the connecting circuit, wherein a wiring layer and second pins on both sides are arranged in the switching circuit; Among them, the wiring layer includes a connecting line between the second pins on both sides and a parallel line between the second pins on the same side. The second pins are respectively connected to the first pins to connect the endpoints on both sides of the disconnection and are used to adjust the connection relationship between the endpoints on both sides of the disconnection.

2. The circuit signal switching device according to claim 1, characterized in that: The combination of the connecting circuit and the adapter circuit includes a connector and an adapter board, a circuit slot and a PCIE gold finger.

3. The circuit signal switching device according to claim 1, characterized in that: The signal circuit is arranged on a circuit board.

4. The circuit signal switching device according to claim 3, characterized in that: The endpoint at one end of the disconnected portion of the signal circuit is connected to the input interface of the circuit board for receiving an external input signal; the endpoint at the other end of the disconnected portion is connected to an electronic device on the circuit board for transmitting the external input signal to the corresponding electronic device.

5. The circuit signal switching device according to claim 1, characterized in that: The first pin is connected to the endpoints on both sides of the disconnection point, including that a plurality of first pins are connected in parallel to one endpoint.

6. The circuit signal switching device according to claim 1, characterized in that: A slot opening is provided in the connecting circuit; wherein the switching circuit is plugged into the connecting circuit through the slot opening.

7. The circuit signal switching device according to claim 6, characterized in that: The tail of the first pin extends into the slot, so that when the switching circuit is plugged into the connecting circuit, the second pin is connected to the first pin.

8. The circuit signal switching device according to claim 1, characterized in that: The second pin is connected in series with the first pin.

9. The circuit signal switching device according to claim 1, characterized in that: The switching circuit also includes a board body; second pins and wiring layers are arranged on both sides of the board body; wherein the wiring layers on both sides of the board body are connected by a metal medium penetrating the board body.

10. An electronic device, characterized in that: It comprises a circuit signal switching device as described in any one of claims 1-9.

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