Plugging connector with built-in channel and connector assembly

Abstract

The utility model discloses a plug-in connector with a built-in channel and a connector assembly, and relates to the field of electric connectors for rechargeable battery systems. The plug-in connector is provided with the insulating shell and the conductive terminal which are matched with the structure of an old connector, the insulating shell is provided with the first signal terminal comprising the terminal seat, the terminal contact and the elastic piece, and the terminal contact can slide in a telescopic mode along the axial direction in the insulating shell in an elastic reset mode. According to the connector assembly provided with the first signal terminal, the first signal terminal can be in conductive contact with the second signal terminal during plugging, so that the terminal contact can retract backwards when the connector is plugged with an old connector, plugging connection can be smoothly completed, meanwhile, in the connector assembly provided with the second signal terminal, the first signal terminal can be in conductive contact with the second signal terminal during plugging, and signal transmission is completed. Rich functions such as battery parameter identification and battery electric control are expanded from signals, the user experience is improved, and the popularization efficiency of new function products is improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical connectors for rechargeable battery systems, and particularly to a plug connector with built-in channels and a connector assembly. Background Art

[0002] In the field of RC models, lithium-ion batteries are an important part of their power systems, providing continuous and stable power output for the models. For ease of use and charging, lithium-ion batteries are usually equipped with connecting wires. During charging, the battery is removed from the RC model and conductively connected to the electrical connector on the charger through the electrical connector on the connecting wire.

[0003] In the radio control (RC) model industry, due to the wide variety of RC model devices, there are a large number of compatible rechargeable battery types, such as the number of battery cells, battery size specifications, battery capacity specifications, battery chemistry types, and so on. To be compatible with different battery types, corresponding charging devices have been introduced in the market. However, in traditional charging devices, users need to manually operate and set the battery type, which is cumbersome and prone to incorrect settings.

[0004] To enable the charging device to identify the battery, various methods such as radio frequency identification and two-dimensional codes have been adopted in the market, but the operation is still cumbersome. A relatively optimized solution is to improve the electrical connectors of the battery and the charging device. By adding signal channels, not only can the battery be automatically identified, but also other battery control functions can be enriched.

[0005] However, after the structures of the battery connector and the charging device connector are improved, they often cannot be adapted to the old-style connectors, making the existing charging devices and batteries of users unable to be adapted to the improved connectors. Summary of the Utility Model

[0006] To solve the problems existing in the prior art, the main purpose of the utility model is to provide a plug connector with built-in channels and a connector assembly. By improving the internal structure of the plug connector, signal channels are added to enrich the functions of the battery and the charging device, and at the same time, it can be adapted to the old-style connectors, thereby improving the user experience and enhancing the promotion efficiency of new devices.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, the present utility model provides a plug connector with a built-in channel. The plug connector includes an insulating housing with a jack or a plug post configured at the front end, and at least a pair of conductive terminals axially parallelly arranged in the jack or the plug post of the insulating housing. Among them, the plug connector further includes a first signal terminal, and the first signal terminal is axially parallel to the conductive terminals and arranged in the jack or the plug post of the insulating housing; the first signal terminal includes a terminal seat, a terminal contact and an elastic member. A chute is arranged on the terminal seat, the terminal contact can slide axially along the chute, and the elastic member is used to apply a forward elastic force to the terminal contact when the terminal contact slides backward.

[0009] Optionally, for the above plug connector, the first signal terminal is arranged between the pair of conductive terminals, and the distances between the axis of the first signal terminal and the axes of the two conductive terminals are the same.

[0010] Optionally, for the above plug connector, the first signal terminal is configured as one or two.

[0011] Optionally, for the above plug connector, if the front end of the insulating housing is configured with a jack, then the conductive terminal is a male conductive terminal, and the first signal terminal extends outward from the bottom of the jack.

[0012] Optionally, for the above plug connector, if the front end of the insulating housing is configured with a plug post, then the conductive terminal is a female conductive terminal, and the first signal terminal is arranged at the front end of the plug post and extends forward.

[0013] In a second aspect, based on the same inventive concept, the present utility model further provides a connector assembly with a built-in channel. The connector assembly includes a first connector and a second connector that can be plugged and mated with each other. The first connector includes an insulating female housing with a jack configured at the front end, and at least a pair of male conductive terminals axially parallelly arranged in the jack; the second connector includes an insulating female housing with a plug post configured at the front end, and at least a pair of female conductive terminals axially parallelly arranged in the plug post. Among them, the connector assembly further includes a first signal terminal and a second signal terminal.

[0014] The first signal terminal is arranged to extend along the plugging direction in one of the jack and the plug post, and the second signal terminal is arranged to extend along the plugging direction in the other of the jack and the plug post.

[0015] The first signal terminal includes a terminal seat, a terminal contact and an elastic member. A chute is arranged on the terminal seat, the terminal contact can slide axially along the chute, and the elastic member is used to apply a forward elastic force to the terminal contact when the terminal contact slides backward.

[0016] The position where the second signal terminal is provided corresponds to the first signal terminal, so that when the first connector and the second connector are plugged together, the front end of the second signal terminal abuts against the first signal terminal.

[0017] Optionally, in the above connector assembly, the first signal terminal is configured as one or two.

[0018] Optionally, in the above connector assembly, the first signal terminal is only arranged in the jack of the first connector extending only along the plugging direction, and the second signal terminal is only arranged in the plug post of the second connector extending only along the plugging direction.

[0019] Optionally, in the above connector assembly, the first signal terminal is arranged between the pair of conductive male terminals, and the distances between the axis of the first signal terminal and the axes of the two conductive male terminals are the same.

[0020] Optionally, in the first connector, the conductive male terminal and the first signal terminal are respectively provided with right-angle pins extending backward outside the insulating female housing, and a clamping end is arranged at the bottom of the insulating female housing.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] (1) In the plug connector of the present utility model, a conductive terminal and a first signal terminal are arranged in the jack or the plug post of the insulating housing. The first signal terminal is composed of a terminal seat, a terminal contact and an elastic member, so that the terminal contact can telescopically slide axially elastically and reset inside the insulating housing. Therefore, when plugging with an old model connector, the terminal contact can retract backward into the interior to facilitate the smooth completion of the plugging and realize the compatibility of the plug connector. At the same time, when plugging with a new model connector with built-in channels, the terminal contact remains in abutment under the action of the elastic member for signal transmission, and rich functions such as battery parameter identification and battery electronic control can be extended from the signal. Overall, the plug connection assembly of the present utility model can improve the user experience and increase the promotion efficiency of new function products.

[0023] (2) In the connector assembly of the present utility model, it is composed of a first connector and a second connector. The first signal terminal and the second signal terminal are respectively arranged on the two. The first signal terminal can telescopically slide axially elastically and reset, so that when the connector is plugged with an old model connector, the terminal contact can retract backward, thus enabling the completion of the plug connection. At the same time, when the first connector and the second connector are plugged, the first signal terminal can also conductively contact the second signal terminal to complete the signal transmission, realize rich functions such as battery parameter identification and battery electronic control extended from the signal, improve the user experience, and increase the promotion efficiency of new function products.

[0024] The present utility model will be further described below in conjunction with the accompanying drawings. Description of the Drawings

[0025] Figure 1 is a front view structural schematic diagram of a plug connector with a built-in channel according to an embodiment of the present utility model.

[0026] Figure 2 is a front view three-dimensional structural schematic diagram of a connector assembly with a built-in channel according to an embodiment of the present utility model.

[0027] Figure 3 is a sectional three-dimensional structural schematic diagram of the plug connector with a built-in channel when not plugged in according to an embodiment of the present utility model.

[0028] Figure 4 is a sectional three-dimensional structural schematic diagram of the plug connector with a built-in channel when plugged in according to an embodiment of the present utility model.

[0029] Figure 5 is a sectional three-dimensional structural schematic diagram of the first connector and an old-style male plug female terminal connector being docked according to an embodiment of the present utility model.

[0030] Figure 6 is a sectional three-dimensional structural schematic diagram of the second connector and an old-style female plug male terminal connector being docked according to an embodiment of the present utility model.

[0031] Reference Numerals: 11, insulating housing; 12, conductive terminal; 20, first connector; 21, insulating female housing; 22, jack; 23, conductive male terminal; 24, clamping end; 30, second connector; 31, insulating male housing; 32, plug post; 33, conductive female terminal; 40, first signal terminal; 41, terminal seat; 42, terminal contact; 43, elastic member; 50, second signal terminal; 601, old-style male plug female terminal connector; 602, old-style female plug male terminal connector. Detailed Embodiments

[0032] To better illustrate the purpose, technical solution and advantages of the present utility model, the following further describes in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0033] As Figure 1As shown in the figure, it is a plug connector with a built-in channel according to an embodiment of the present utility model. The plug connector includes an insulating housing 11 and a pair of conductive terminals 12. The front end of the insulating housing 11 can be configured with a jack or a plug post for the plug connector of this embodiment to be mated with another plug connector. The pair of conductive terminals 12 are axially parallel and arranged in the jack or the plug post of the insulating housing 11 for conductive connection when the plug connector of this embodiment is plugged into another plug connector.

[0034] Among them, a first signal terminal 40 is further arranged inside the front end of the insulating housing 11 which can be configured with a jack or a plug post. The first signal terminal 40 is composed of a terminal base, a terminal contact and an elastic member. The terminal contact is slidably arranged on the terminal base along the inner chute of the terminal base. Through the elastic member, the terminal contact can have a forward elastic force when the terminal contact slides backward.

[0035] Among them, if the insulating housing 11 of the plug connector is configured as a jack, the first signal terminal 40 is installed at the bottom of the jack. When not under pressure, the terminal contact protrudes out of the jack. When under pressure, the terminal contact can slide backward to the bottom of the jack. After the pressure is released, the terminal contact protrudes out of the jack again under the action of the elastic force. Thus, when the plug connector is plugged into another connector configured with a plug post, the terminal contact will be pushed into the inside of the terminal base by the plug post connector, and the plug post connector will be able to complete the docking with the plug connector of this embodiment. At the same time, when the plug connector of this embodiment is docked with another connector with the same built-in signal, the terminal contact will maintain the conductive contact of the connector with the built-in signal under the action of the elastic member, so as to realize signal transmission.

[0036] Similarly, if the insulating housing 11 of the plug connector is configured as a plug post, the first signal terminal 40 can be installed at the top of the plug post. When not under pressure, the terminal contact protrudes out of the top of the plug post. When under pressure, the terminal contact can slide backward into the top of the plug post. After the pressure is released, the terminal contact protrudes out of the top of the plug post again under the action of the elastic force. Thus, when the insulating housing 11 of the plug connector is configured as a plug post, it can not only be adapted to an old model of another connector with a jack and realize the basic conductive function, but also be adapted to a new model of another connector with a built-in signal and realize both the conductive function and the signal transmission function.

[0037] It can be seen that the plug connector of the present utility model is provided with a first signal terminal 40 which can be elastically reset and telescopically slide in the jack or the plug post of the insulating housing 11, so that the plug connector can not only be adapted to plug into an old model of connector, but also perform signal transmission during the plugging process with a new model of connector, realizing the enrichment of product functions on the basis of meeting compatibility.

[0038] Specifically in this embodiment, the first signal terminal 40 is disposed between a pair of conductive terminals 12, and the distances between the axis of the first signal terminal 40 and the axes of the two conductive terminals 12 are the same. Generally speaking, a pair of conductive terminals 12 are used to transmit the power of the positive and negative circuits. The first signal terminal 40 is arranged in the middle of the two conductive terminals 12, and the space inside the jack or the plug post can be fully utilized.

[0039] Specifically in this embodiment, the first signal terminal 40 is configured as one or two. Generally speaking, a signal loop with positive and negative poles is required to transmit signals. Setting two first signal terminals 40 can form a complete signal transmission. In some other solutions, the plug connector can also be configured with one as the signal positive line, and the conductive terminal 12 of the negative pole is borrowed as the signal negative line.

[0040] Specifically in this embodiment, if the front end of the insulating housing 11 is configured with a jack, the conductive terminal 12 is configured as a male conductive terminal, and the first signal terminal 40 extends outward from the bottom of the jack. Since the first signal terminal 40 is arranged in the jack, the first signal terminal 40 can be protected within the insulating housing 11, thereby improving the service life of the plug connector. In other embodiments, if the front end of the insulating housing 11 is configured with a plug post, the conductive terminal 12 is configured as a female conductive terminal, and the first signal terminal 40 can also be arranged at the front end of the plug post and extend forward.

[0041] As Figures 2 to 6 shown, it is a connector assembly with built-in channels according to an embodiment of the present invention. The connector assembly includes a first connector 20 and a second connector 30.

[0042] Among them, the first connector 20 is configured with a male terminal and female plug structure, which includes an insulating female housing 21 and a pair of male conductive terminals 23. The front end of the insulating female housing 21 is configured with a jack 22, and a pair of male conductive terminals 23 parallel to each other axially are arranged in the jack 22. Among them, the second connector 30 is configured with a female terminal and male plug structure that cooperates with the first connector 20, which includes an insulating male housing 31 and a pair of female conductive terminals 33. The front end of the insulating male housing 31 is configured with a plug post 32, and a pair of female conductive terminals 33 parallel to each other axially are arranged in the plug post 32. Specifically, the first connector 20 and the second connector 30 cooperate with each other, so that the plug post 32 of the insulating male housing 31 can be inserted into the jack 22 of the insulating female housing 21, and at the same time each male conductive terminal 23 can be inserted into the interior of each female conductive terminal 33 one by one.

[0043] In this embodiment, the connector assembly is applied to the power transmission of a system composed of a battery, a charger, and a load. A pair of male conductive terminals 23 of the first connector 20 and a pair of female conductive terminals 33 of the second connector 30 can be used to conduct the positive and negative power of the system.

[0044] For such a connector component, the parts of the insulating female housing 21 and the insulating male housing 31 for holding during plugging play an insulating and protective function. Generally speaking, the outer shapes of the insulating female housing 21 and the insulating male housing 31 are approximately rectangular parallelepiped shapes. The jacks 22 are arranged at the front end of the long side of the rectangular parallelepiped of the insulating female housing 21, the conductive male terminals 23 extend along the long side direction of the rectangular parallelepiped, and a pair of conductive male terminals 23 are arranged along the wide side direction of the rectangular parallelepiped. In addition, the cross-sectional shapes of the jacks 22 and the plug posts 32 are configured to be approximately rectangular. The contour size of the plug post 32 is smaller than that of the insulating male housing 31 to form a limiting step. On the basis of being able to be plugged and matched and insulatingly surround the conductive female terminal 33, the plug post 32 can be provided with a groove extending along the long side direction of the rectangular parallelepiped to achieve the purpose of saving materials. The contour shape of the jack 22 matches that of the plug post 32. In some solutions, the size of the jack 22 can be slightly smaller than that of the plug post 32 to make the plugging more firm. Grooves for reducing materials can also be provided on the inner wall of the jack 22. Furthermore, the conductive male terminal 23 is generally cylindrical, and the conductive female terminal 33 is also generally cylindrical and has a cylindrical hole inside, so that the conductive male terminal 23 is plugged into the conductive female terminal 33. In order to ensure the stability of terminal conduction, the conductive male terminal 23 is provided with a cross groove, and the outer diameter is slightly larger than that of the conductive female terminal 33. Thus, when plugged, the parts of the conductive male terminal 23 divided by the cross groove will elastically deform towards the center and apply contact pressure to the inner wall of the hole of the conductive female terminal 33.

[0045] To achieve the purpose of the present utility model, in this embodiment, the first connector 20 is further configured with a first signal terminal 40, and the first signal terminal 40 is arranged in the jack 22 of the insulating female housing 21 extending along the plugging direction. At the same time, the second connector 30 is further configured with a second signal terminal 50, and the second signal terminal 50 is arranged in the plug post 32 of the insulating male housing 31 extending along the plugging direction.

[0046] Among them, the first signal terminal 40 includes a terminal seat 41, a terminal contact 42 and an elastic member 43. The terminal seat 41 is fixed on the insulating female housing 21. A chute extending along the plugging direction is arranged in the terminal seat 41. The elastic member 43 is assembled in the chute of the terminal seat 41, and the terminal contact 42 is slidably arranged on the terminal seat 41 along the axial direction of the chute. One elastic end of the elastic member 43 abuts against the bottom of the chute of the terminal seat 41, and the other elastic end of the elastic member 43 abuts against the rear end of the terminal contact 42. Thus, when the front end of the terminal contact 42 is subjected to pressure, the terminal contact 42 will retract backward into the chute of the terminal seat 41, and at the same time, the elastic member 43 applies a forward elastic force to the terminal contact 42. When the pressure applied to the terminal contact 42 is released, the terminal contact 42 extends forward along the chute of the terminal seat 41 under the action of the elastic force.

[0047] Among them, the second signal terminal 50 is set at a position corresponding to the first signal terminal 40, so that when the first connector 20 and the second connector 30 are plugged together, the front end of the second signal terminal 50 abuts against the first signal terminal 40. At the same time, the front end position of the second signal terminal 50 does not exceed the front end of the plug post 32 of the second connector 30, so that the second signal terminal 50 is exposed outside the front end of the plug post 32, avoiding the obstruction caused by the second signal terminal 50 when the second connector 30 is plugged alone.

[0048] Reference Figure 3 and Figure 4 , when the first connector 20 is plugged into the second connector 30, the plug post 32 of the insulating male rubber housing will be inserted into the jack 22 of the insulating female housing 21, and a pair of conductive male terminals 23 will be plugged into a pair of conductive female terminals 33 one by one. At the same time, due to the corresponding positions, the terminal contact 42 of the first signal terminal 40 will be pushed by the second signal terminal 50 and retracted into the chute of the terminal seat 41. Under the action of the elastic member 43, the first signal terminal 40 and the second signal terminal 50 maintain conductive contact, so that not only power transmission can be realized through the conductive male terminal 23 and the conductive female terminal 33, but also signal transmission can be realized through the first signal terminal 40 and the second signal terminal 50, realizing rich functions such as battery parameter identification and battery electronic control extended from the signal.

[0049] For example, if the first connector 20 is applied to a charging device or a load, and the second connector 30 is applied to a battery, when the battery equipped with the second connector 30 is plugged into the charging device or load equipped with the first connector 20, not only power transmission can be realized, but also signal transmission can be realized. At the same time, the first signal terminal 40 is arranged in the jack 22, and the second signal terminal 50 is arranged in the plug post 32. The insulating female housing 21 and the insulating male housing 31 do not need to change in the external contour dimensions, so the design dimensions of the connectors installed on the charging device or load do not need to be changed either.

[0050] Reference Figure 5 , when the first connector 20 is plugged into the old - type male - to - female connector 601, the jack 22 of the first connector 20 will be inserted into the male plug structure of the old - type male - to - female connector 601. The male plug structure of the old - type male - to - female connector 601 will abut against the terminal contact 42 of the first signal terminal 40 and push the terminal contact 42 to retract into the chute of the terminal seat 41, so that the first connector 20 and the old - type male - to - female connector 601 can be successfully docked. For example, if the first connector 20 is applied to a charging device or a load, the old - type battery can be plugged into the charging device or load equipped with the first connector 20.

[0051] Reference Figure 6, when the second connector 30 is plugged into the old - style female - plug male - end connector 602, the plug - in post 32 of the second connector 30 will be inserted into the female - plug structure of the female - plug male - end connector. Since the front end of the second signal terminal 50 is located inside the front end of the plug - in post 32 of the second connector 30, when the front end of the plug - in post 32 of the second connector 30 is plugged into the old - style female - plug male - end connector 602, the front end of the second signal terminal 50 will not contact the bottom of the female - plug structure. Thus, the second connector 30 and the old - style female - plug male - end connector 602 can be successfully docked. For example, if the second connector 30 is applied to a battery, then the battery can be plugged into an old - style charging device for charging, and at the same time, the battery can be plugged into an old - style load for power supply.

[0052] Thus, when the first connector 20 and the second connector 30 are plugged and mated, they can not only have the conductive function but also realize the signal - transmission function. As a result, rich functions such as battery - parameter identification and battery electronic control can be extended from the signal, improving the user experience. When the first connector 20 is separately connected to the old - style male - plug female - end connector 601, the first connector 20 can be successfully plugged in, and the first signal terminal 40 does not pose an obstacle. When the second connector 30 is separately connected to the old - style female - plug male - end connector 602, the second connector 30 can be successfully plugged in, and the second signal terminal 50 does not pose an obstacle.

[0053] Regarding the connector assembly, as Figure 2 and Figure 3 shown, two first signal terminals 40 are configured. The two first signal terminals 40 are arranged along the long - side direction of the cuboid of the insulating female housing 21. The axes of the two first signal terminals 40 are located on the perpendicular bisector of a pair of conductive male terminals 23. The distance from the axis of any one of the first signal terminals 40 to the axis of the positive - pole conductive male terminal 23 is equal to the distance from the axis of this first signal terminal 40 to the axis of the negative - pole conductive male terminal 23. The two first signal terminals 40 can form a signal - transmission loop. At the same time, the setting position of the first signal terminals 40 makes full use of the space inside the jack 22. At the same time, the distance between each of the first signal terminals 40 is reasonable, and the distance between the first signal terminals 40 and the conductive male terminals 23 is reasonable, avoiding situations such as short - circuit and accidental electric shock. Similarly, the setting of the second signal terminal 50 also has similar characteristics.

[0054] Regarding the connector assembly, as Figure 3 and Figure 4As shown, in the first connector 20, a right-angle pin extending backward beyond the insulating female housing 21 is provided at the rear end of the conductive male terminal 23, so as to realize the surface mounting welding of the circuit board of the charging device or load. In the second connector 30, straight extension segments extending backward beyond the insulating male housing 31 are respectively provided at the rear ends of the conductive female terminal 33 and the second signal terminal 50, so as to facilitate the welding of the battery wires. In order to facilitate the surface mounting of the first connector 20, a clamping end 24 is provided at the bottom of the insulating female housing 21, and the clamping end 24 is used for clamping in the clamping holes of the circuit board.

[0055] The above embodiments mainly describe 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. What is described in the above embodiments and the specification only illustrates the principle 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 plug connector with a built-in channel, comprising an insulating housing (11) with a socket (22) or a socket post (32) at the front end, and at least one pair of conductive terminals (12) arranged axially parallel in the socket (22) or the socket post (32) of the insulating housing (11), characterized in that: It also includes a first signal terminal (40), which is axially arranged in the connector hole (22) or the connector column (32) of the insulating housing (11) in parallel with the conductive terminal (12); the first signal terminal (40) includes a terminal seat (41), a terminal contact (42) and an elastic member (43), the terminal seat (41) is provided with a slide groove, the terminal contact (42) can slide axially along the slide groove, and the elastic member (43) is used to apply a forward elastic force to the terminal contact (42) when the terminal contact (42) slides backward.

2. A plug connector with a built-in channel according to claim 1, characterized in that: The first signal terminal (40) is arranged between the pair of conductive terminals (12), and the distance between the axis of the first signal terminal (40) and the axis of the two conductive terminals (12) is the same.

3. The plug connector according to claim 1, characterized in that The number of the first signal terminal (40) is one or two.

4. A plug connector with a built-in channel according to claim 1, characterized in that: The front end of the insulating housing (11) is provided with a socket (22), the conductive terminal (12) is a conductive male terminal (23), and the first signal terminal (40) extends outward from the bottom of the socket (22).

5. A plug connector with a built-in channel according to claim 1, characterized in that: The front end of the insulating housing (11) is provided with a connector post (32), the conductive terminal (12) is a conductive female terminal (33), and the first signal terminal (40) is arranged at the front end of the connector post (32) and extends forward.

6. A connector assembly with a built-in channel, comprising a first connector (20) and a second connector (30) which can be plugged into each other, wherein the first connector (20) comprises an insulating female housing (21) with a socket (22) at the front end, and at least one pair of conductive male terminals (23) axially parallelly arranged in the socket (22); the second connector (30) comprises an insulating female housing (21) with a socket post (32) at the front end, and at least one pair of conductive female terminals (33) axially parallelly arranged in the socket post (32), characterized in that: It also includes a first signal terminal (40) and a second signal terminal (50), The first signal terminal (40) is arranged on one of the plug hole (22) and the plug post (32) in an extending manner along the plugging direction, and the second signal terminal (50) is arranged on the other of the plug hole (22) and the plug post (32) in an extending manner along the plugging direction; The first signal terminal (40) comprises a terminal seat (41), a terminal contact (42) and an elastic member (43); the terminal seat (41) is provided with a slide groove, the terminal contact (42) can slide in the axial direction along the slide groove, and the elastic member (43) is used to apply a forward elastic force to the terminal contact (42) when the terminal contact (42) slides backward; The second signal terminal (50) is arranged at a position corresponding to the first signal terminal (40) so that the front end of the second signal terminal (50) abuts against the first signal terminal (40) when the first connector (20) and the second connector (30) are plugged and connected.

7. A connector assembly with a built-in channel according to claim 6, characterized in that: The number of the first signal terminal (40) is one or two.

8. A connector assembly with a built-in channel according to claim 6, characterized in that: The first signal terminal (40) is arranged in the plug hole (22) of the first connector (20) so as to extend only along the plugging direction, and the second signal terminal (50) is arranged in the plug post (32) of the second connector (30) so as to extend only along the plugging direction.

9. A connector assembly with a built-in channel according to claim 8, characterized in that: The first signal terminal (40) is arranged between the pair of conductive male terminals (23), and the distance between the axis of the first signal terminal (40) and the axis of the two conductive male terminals (23) is the same.

10. A connector assembly with a built-in channel according to claim 8, characterized in that: In the first connector (20), the conductive male terminal (23) and the first signal terminal (40) are respectively provided with right-angle pins extending backwards outside the insulating female housing (21), and a locking terminal (24) is provided at the bottom of the insulating female housing (21).

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