Socket connectors and pluggable connector devices

Abstract

A socket connector characterized in that it comprises: a first housing and several conductive pins received in the first housing, the several conductive pins being evenly distributed in at least two rows; the number of pins of the socket connector corresponds to the number of conductive pins; several strip-shaped upper projections are provided on a first surface of an inner side of the first housing, projecting from this side in a first direction; the several upper projections are spaced apart from one another and arranged side by side; several strip-shaped lower projections are provided on a second surface of another inner side of the first housing, opposite the side provided with the upper projections, projecting from this side in a first direction; the several lower projections are arranged side by side;Each upper projection corresponds to an upper projection position; each lower projection corresponds to a lower projection position; the upper projection has a different width than the lower projection; the first direction is an insertion direction of a connector, wherein a first mismapping protection structure is provided on at least one of the first and second surfaces; the first mismapping protection structure comprises an empty projection position and / or a recessed projection; the empty projection position is formed by the absence of a projection in the corresponding projection position, and the recessed projection is a projection with a recess; wherein the projection position containing the first mismapping protection structure constitutes a first coding, and the projection positions lacking a mismapping protection structure constitute a second coding;and wherein, in the case of socket connectors with the same number of pins but different coding types, at least two groups of codings differ between the upper protrusion positions or between the lower protrusion positions.

Description

Technical FieldThe embodiments of the present application relate to the technical field of connectors, in particular a socket connector and a pluggable connector device.Prior ArtA connector is an essential component of an electronic device and has the following technical effect: it makes a connecting bridge to a blocked point in a circuit or between separate circuits, so that the current can flow through and thus the predetermined function is achieved by the circuit.In an electrical connector device having a male connector and a female connector which are matingly coupled to each other, generally, electrical connection is made by matingly coupling a male end and a female end to each other to transmit electrical power or electrical signals. In an electrical connection system comprising a plurality of electrical connector devices, the plugs and sockets of the various electrical connector devices have similar or identical configurations. However, the different electrical connector devices could have different applications (e.g., for transferring different voltages, currents of different strengths, or different electrical signals), so that it is easily possible for the user to incorrectly mate a plug and a socket of different electrical connector devices. At present, the problem is that the connectors cannot be suitable for a broader range of customer applications due to the limited pin count and possible coding types of the protrusions.Content of the InventionThe embodiments of the present application provide a receptacle connector and pluggable connector device that increase pin count and possible coding types of the protrusions of the connector to meet customer requirements in multiple application scenarios.In a first aspect, the embodiments of the present application provide a receptacle connector comprising:a first housing and a plurality of conductive pins accommodated in the first housing, wherein the plurality of conductive pins are evenly distributed in at least two rows; a pin number of the female connector corresponds to the number of the conductive pins;A plurality of strip-shaped upper protrusions protruding from this side in a first direction are provided on a first surface of an inner side of the first housing; the plurality of upper protrusions are spaced apart from each other and arranged side by side; a plurality of strip-shaped lower protrusions protruding from this side in the first direction are provided on a second surface of another inner side of the first housing opposite to the side provided with the upper protrusions; the plurality of lower protrusions are arranged side by side; each upper protrusion corresponds to an upper protrusion position; each lower protrusion corresponds to a lower protrusion position; the upper protrusion has a different width than the lower protrusion; the first direction is a plug-in direction of a plug connector, whereinA first mis-plug protection structure is provided on at least one of the first and second surfaces; the first mis-plug protection structure comprises an empty protrusion position and / or a recessed protrusion; the empty protrusion position is formed by an absence of a protrusion in the corresponding protrusion position, and the recessed protrusion is a protrusion with a recess; wherein the protrusion position in which the first mis-plug protection structure is located represents a first coding, and the protrusion positions in which no mis-plug protection structure is located represent a second coding; and wherein in female connectors having an equal pin number but different coding types, at least two groups of codings are different between the upper protrusion positions or between the lower protrusion positions.Optionally, it is provided that the mis-plug protection structure is provided on the first surface and the second surface, respectively; and that the mis-plug protection structure on the first surface is a first upper mis-plug protection structure, and the mis-plug protection structure on the second surface is a first lower mis-plug protection structure; wherein the first upper mis-plug protection structure comprises a first upper empty protrusion position; and wherein the first lower mis-plug protection structure comprises a first lower recessed protrusion.Optionally, it is arranged that the number of conductive pins is in the range of 4 to 20; and that the plurality of conductive pins are arranged in two rows; wherein the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of conductive pins is 4; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of conductive pins is 6; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of conductive pins is 8; the receptacle connector comprises the coding types of double layer X coding, double layer Y coding, double layer Z coding and double layer W coding when the number of the conductive pins is 10; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 12; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 14; the receptacle connector comprises the coding types of double layer X coding, double layer Y coding, double layer Z coding and double layer W coding when the number of the conductive pins is 16; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of conductive pins is 18; the receptacle connector comprises the coding type of double layer X coding and double layer Y coding when the number of conductive pins is 20.Optionally, it is arranged that the number of the lower protrusion positions corresponds to the number of the conductive pins in a row, and that the number of the upper protrusion positions is larger by one than the number of the lower protrusion positions; that the first one of the lower protrusion positions and the first one of the upper protrusion positions are located on the same end of the female connector and the remaining upper and lower protrusion positions are each arranged one after the other in the same direction; that in the plug connector with the coding type of double layer X coding, the first upper misplugging protection structure is located in the first and the last one of the upper protrusion positions when the pin number is 4, 6, 8, 12, 14, 16, 18 or 20; the first upper misplugging protection structure is located in the fifth one of the upper protrusion positions when the pin number is 10; the first lower mis-mating protection structure is located in the next last one of the lower protrusion positions when the pin number is 6, 8, 10, 12, 14, 16, 18 or 20; and the first lower mis-mating protection structure is located in the last one of the lower protrusion positions when the pin number is 4; in the receptacle connector with the coding type of double layer Y coding, the first upper mis-mating protection structure is located in the first and second ones of the upper protrusion positions and the first lower mis-mating protection structure is located in the first one of the lower protrusion positions; that in the receptacle connector having the coding type of double layer Z coding, the first upper mis-plug protection structure is located in the first and third of the upper protrusion positions and the first lower mis-plug protection structure is located in the second of the lower protrusion positions; and that in the receptacle connector having the coding type of double layer W coding, the first upper mis-plug protection structure is located in the first and fourth of the upper protrusion positions and the first lower mis-plug protection structure is located in the third of the lower protrusion positions.Optionally, it is provided that the first lower recessed protrusion has a width larger than the other lower protrusions than the first lower recessed protrusion in an arrangement direction of the lower protrusions.Optionally, it is provided that the first lower recessed protrusion has a width greater than 2 mm and the lower protrusions other than the first lower recessed protrusion has a width less than 2 mm.Optionally, it is provided that the center of the upper protrusion positions is arranged offset with respect to the center of the lower protrusion positions.Optionally, it is provided that the center of the lower protrusion positions is arranged corresponding to the center of the lower row of conductive pins.Optionally, it is provided that the first of the upper protrusion positions is located on the left side of the upper row of conductive pins and the last of the upper protrusion positions is located on the right side of the upper row of conductive pins, wherein the distance between each two adjacent upper protrusion positions is the same, and wherein the remaining protrusion positions other than the first and the last of the upper protrusion positions are each located between two adjacent conductive pins in the upper row.Optionally, it is provided that the upper protrusion has a smaller width than the lower protrusion.In a second aspect, the embodiments of the present application provide a pluggable connector device including a receptacle connector according to the first aspect and a plug connector having a corresponding number of positions and a corresponding type of coding. The plug connector comprises:a second housing having a plurality of pin holes provided on a mating surface thereof; wherein the plurality of pin holes are evenly arranged in at least two rows; the pin number of the male connector corresponds to the number of the pin holes;A third surface of an outer side of the second housing is provided with a plurality of strip-shaped upper protrusion grooves recessed in a first direction from this side; the plurality of upper protrusion grooves are spaced apart from each other and arranged side by side; a fourth surface of another outer side of the first housing opposite to the side provided with the upper protrusion grooves is provided with a plurality of strip-shaped lower protrusion grooves recessed in the first direction from this side; the plurality of lower protrusion grooves are arranged side by side; each upper protrusion groove corresponds to an upper protrusion position and each lower protrusion groove corresponds to a lower protrusion position; the upper protrusion groove has a different width than the lower protrusion groove; and whereinFurther, on at least one of the third and fourth surfaces, there is provided a second misplugging protection structure formed to have a protrusion groove empty position and / or a protrusion groove having a convex part in the shape of a tricker tip, the protrusion groove empty position being formed by completely filling a protrusion groove in the corresponding protrusion position; and the protrusion position where the second misplugging protection structure is present represents a first coding, and the protrusion positions where there is no second misplugging protection structure represent a second coding; wherein in plug connectors having an equal pin number but different coding types, at least two groups of codings are different between the protrusion upper positions or between the protrusion lower positions.Optionally, it is arranged that, when the plug connector is inserted into the socket connector, the conductive pins project into the second housing through the pin holes; a plurality of upper projections and a plurality of lower projections are provided on an inner side surface of the first housing of the socket connector, respectively, and a plurality of upper projection grooves and a plurality of lower projection grooves are provided on an outer side surface of the second housing of the plug connector, respectively; and when the insertion, the upper projections are inserted into the upper projection grooves in the aligned projection positions and the lower projections are inserted into the lower projection grooves in the aligned projection positions.According to the technical solution of the embodiments of the present application, by providing a plurality of upper protrusion positions and a plurality of lower protrusion positions on the housing of the connector, the upper protrusions (protrusion grooves) are formed in the upper protrusion positions and the lower protrusions (protrusion grooves) are formed in the lower protrusion positions. By matching the projections to the projection groove in the corresponding projection position, the function of misplugging protection is realized. The upper mis-fitting prevention structure is also formed by removing a protrusion (a protrusion groove) in one of the upper protrusion positions or providing a protrusion (a protrusion groove) different from the protrusions (protrusion grooves) in the other protrusion positions. The lower mis-fitting prevention structure is formed by removing a protrusion (a protrusion groove) in one of the lower protrusion positions or providing a protrusion (a protrusion groove) different from the protrusions (protrusion grooves) in the other lower protrusion positions. By setting the arrangement position of the upper mis-fit prevention structure with respect to the upper protrusions (protrusion grooves) and the arrangement position of the lower mis-fit prevention structure with respect to the lower protrusions (protrusion grooves), a plurality of combinations of positions can be formed, so that a plurality of coding types of the connector can be defined from the different combinations of positions. In connectors with an equal pin number but different coding types, at least two groups of codings are different between the upper protrusion positions or between the lower protrusion positions. Here, the male connector is provided with pin holes in multiple positions in the housing and protrusion grooves on two opposing surfaces of outer sides of the housing. The female connector is provided with pins in multiple positions in the housing and with protrusions on two opposing surfaces of inner sides of the housing. This increases the pin count and possible coding types of the protrusions for a plug connector and a socket connector, respectively, and the plug connectors and the socket connectors having equal coding types and equal pin count can be inserted and disassembled into each other to meet customer requirements in multiple application scenarios.DESCRIPTION OF THE FIGURESFIG. 1 is a perspective view of a female connector according to an embodiment of the present application; FIG. 2 is a front view of the structure shown in FIG. 1 ; FIG. 3 is a perspective view of another female connector according to an embodiment of the present application; FIG. 4 is a front view of the structure shown in FIG. 3 ; FIG. 5 is a perspective view of another female connector according to an embodiment of the present application; FIG. 6 is a front view of the structure shown in FIG. 5 ; FIG. 7 is a perspective view of another female connector according to an embodiment of the present application; FIG. 8 is a front view of the structure shown in FIG. 7 ; FIG. 9 is a perspective view of a plug connector according to an embodiment of the present application; FIG. 10 is a perspective view of another plug connector according to an embodiment of the present application; FIG. 11 is a perspective view of another plug connector according to an embodiment of the present application; FIG. 12 is a perspective view of another plug connector according to an embodiment of the present application; and FIG. 13 is a structural perspective view of a pluggable electrical connector device according to an embodiment of the present application.DETAILED EMBODIMENTSThe present application will be described further in detail in conjunction with the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of, but not intended to limit, the present application. It should be noted that, for the sake of simplified description, not all structures but only the parts related to the present application are illustrated in the figures.The embodiments of the present application provide a receptacle connector. Referring to FIGS. 1-8, the receptacle connector includes:a first housing 100 and a plurality of conductive pins 130 accommodated in the first housing 100. The plurality of conductive pins 130 are arranged evenly distributed in at least two rows. The pin number of the female connector corresponds to the number of the conductive pins 130.On a first surface of an inner side of the first housing 100, a plurality of strip-shaped upper protrusions 110 protruding from this side in a first direction are provided. The plurality of upper protrusions 110 are spaced apart from each other and arranged side by side. On a second surface of another inner side of the first housing 100 opposite to the side provided with the upper protrusions 110, a plurality of strip-shaped lower protrusions 120 protruding from this side in the first direction are provided. The plurality of lower protrusions 120 are arranged side by side. Each upper protrusion 110 corresponds to an upper protrusion position. Each lower protrusion 120 corresponds to a lower protrusion position. The upper protrusion 110 has a different width than the lower protrusion 120. The first direction represents a plug-in direction of the plug connector.A first misplugging protection structure is provided on at least one of the first and second surfaces. The first mis-mating protection structure includes an empty protrusion position and / or a recessed protrusion. The empty protrusion position is formed by lack of protrusion in the corresponding protrusion position, and the recessed protrusion is a protrusion having a recess. The protrusion position in which the first mis-mating protection structure is located represents a first coding, and the protrusion positions in which no mis-mating protection structure is located represent a second coding. In female connectors having an equal pin number but different coding types, at least two groups of codes are different between the upper protrusion positions or between the lower protrusion positions.Specifically, the pin number of the female connector corresponds to the number of the conductive pins 130. The plurality of conductive pins 130 are arranged in two or more than two rows. The number of conductive pins 130 in each row is the same. In FIG. 1, 5 conductive pins 130 are shown by way of example, which are arranged in a row. Each upper protrusion 110 corresponds to an upper protrusion position. Each lower protrusion 120 corresponds to a lower protrusion position. The number of the upper protrusion positions may be the same as or different from the number of the lower protrusion positions. Since the upper protrusion 110 has a different width from the lower protrusion 120, it can thereby be prevented that the plug connector is inserted therein in a reverse wrong direction when inserted into the receptacle connector.Furthermore, a mismating protection structure is provided on at least one of the first and second surfaces, wherein the mismating protection structure on the first surface is a first upper mismating protection structure, and the mismating protection structure on the second surface is a first lower mismating protection structure. The first upper mis-fit prevention structure is formed by removing a protrusion in one of the upper protrusion positions or forming an upper protrusion 110 having a different shape from the protrusions in the other protrusion positions. The first lower mis-fit prevention structure is formed by removing a protrusion in one of the lower protrusion positions or forming a lower protrusion 120 having a different shape from the protrusions in the other lower protrusion positions. The details can be found in the following exemplary embodiments. By adjusting the arrangement position of the first upper mis-fit prevention structure with respect to the upper protrusions 110 and the arrangement position of the first lower mis-fit prevention structure with respect to the lower protrusions 120, a plurality of combinations of positions can be formed, so that a plurality of coding types of the female connector can be defined from the different combinations of positions. In the case of socket connectors with an identical pin number but different coding types, it is sufficient here if at least two groups of codings are different between the upper projection positions or between the lower projection positions. This may increase pin count of the receptacle connector to meet customer requirements in multiple application scenarios.Moreover, the plug connectors into which the socket connectors having different types of coding can be inserted, respectively, have different structures. The plug connector can only be inserted successfully into the plug connector if, during insertion, its structure and the first upper misinsertion protection structure and the first lower misinsertion protection structure of the socket connector can be matched to one another. At this time, the female connectors of different types are set to have the first upper misplugging protection structures and the first lower misplugging protection structures at different positions to prevent a male connector of a type other than the female connector from being inserted therein, so that the effect of misplugging protection is realized.Optionally, a plurality of conductive pins 130 are arranged in two rows to form a dual layer receptacle connector having a plurality of pins as shown in Figs. 1-8. In the dual-layer receptacle connector having a plurality of pins, the first upper mismating protection structure includes a first upper empty protrusion position, i.e., the first upper empty protrusion position is formed by the absence of an upper protrusion 110 in the corresponding upper protrusion position (as shown in FIGS. 1 to 8, zone a 1 represents a location where the first upper mismating protection structure is located). The first lower mis-mating protection structure includes a first lower recessed protrusion, i.e., the first lower recessed protrusion constitutes a lower protrusion 120 having a recess in the corresponding lower protrusion position (as shown in FIGS. 1 to 8, zone b 1 constitutes a location where the first lower mis-mating protection structure is located).Optionally, in the dual layer receptacle connector having a plurality of pins, the number of the conductive pins 130 is in the range of 4 to 20. The number of the lower protrusion positions corresponds to the number of the conductive pins 130 in a row, and the number of the upper protrusion positions is larger than the number of the lower protrusion positions by one. The first of the lower protrusion positions and the first of the upper protrusion positions are located on the same end of the female connector, and the remaining upper and lower protrusion positions are arranged one after another in the same direction, respectively. Here, 10 conductive pins 130 are shown in FIGS. 1 to 8 by way of example. Here, in the female connector, "1" means that a protrusion (upper protrusion 110 / lower protrusion 120) is present in the corresponding protrusion position, and "0" means that the protrusion (upper protrusion 110 / lower protrusion 120) is removed in the corresponding protrusion position, and "1" concave" means that a protrusion has a depression in the corresponding protrusion position, and thus a "concave" structure is formed. That is, in the present case, the first encoding refers to "1", the second encoding of a protrusion position in which the first upper mis-fit protection structure is located refers to "0", and the second encoding of a protrusion position in which the first lower mis-fit protection structure is located refers to "1" concave".When the number of the conductive pins 130 is 4, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 4 conductive pins 130, the first upper mismating protection structure is in the first and the last of the upper protrusion positions and the first lower mismating protection structure is in the last of the lower protrusion positions. In the receptacle connector with double layer Y coding having 4 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 6, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 6 conductive pins 130, the first upper mismating protection structure is in the first and the last of the upper protrusion positions and the first lower mismating protection structure is in the second of the lower protrusion positions. In the receptacle connector with double layer Y coding having 6 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 8, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 8 conductive pins 130, the first upper mismating protection structure is in the first and the last of the upper protrusion positions and the first lower mismating protection structure is in the third of the lower protrusion positions. In the receptacle connector with double layer Y coding having 8 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 10, the female connector includes the coding types of double layer X coding and double layer Y coding and double layer Z coding and double layer W coding. In the receptacle connector with double layer X coding, which has 10 conductive pins 130 (see FIGS. 1 and 2 ), the first upper mismating protection structure is located in the fifth of the upper protrusion positions and the first lower mismating protection structure is located in the fourth of the lower protrusion positions. In the receptacle connector with double layer Y coding, which has 10 conductive pins 130 (see FIGS. 3 and 4 ), the first upper mismating protection structure is located in the first and second of the upper protrusion positions, and the first lower mismating protection structure is located in the first of the lower protrusion positions. In the receptacle connector with double layer Z coding having 10 conductive pins 130 (see FIGS. 5 and 6 ), the first upper mismating protection structure is in the first and third of the upper protrusion positions and the first lower mismating protection structure is in the second of the lower protrusion positions. In the receptacle connector with the double layer W coding, which has 10 conductive pins 130 (see FIGS. 7 and 8 ), the first upper mismating protection structure is in the first and fourth of the upper protrusion positions and the first lower mismating protection structure is in the third of the lower protrusion positions.When the number of the conductive pins 130 is 12, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 12 conductive pins 130, the first upper mismating protection structure is in the first and last of the upper protrusion positions and the first lower mismating protection structure is in the fifth of the lower protrusion positions. In the receptacle connector with double layer Y coding having 12 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 14, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 14 conductive pins 130, the first upper mismating protection structure is in the first and last of the upper protrusion positions and the first lower mismating protection structure is in the sixth of the lower protrusion positions. In the receptacle connector with double layer Y coding having 14 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 16, the female connector includes the coding types of double layer X coding, double layer Y coding, double layer Z coding and double layer W coding. In the receptacle connector with double layer X coding having 16 conductive pins 130, the first upper mismating protection structure is in the first and last of the upper protrusion positions and the first lower mismating protection structure is in the seventh of the lower protrusion positions. In the receptacle connector with double layer Y coding having 16 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions. In the receptacle connector with double layer Z coding having 16 conductive pins 130, the first upper mismating protection structure is in the first and third of the upper protrusion positions and the first lower mismating protection structure is in the second of the lower protrusion positions. In the receptacle connector with double layer W coding having 16 conductive pins 130, the first upper mismating protection structure is in the first and fourth of the upper protrusion positions and the first lower mismating protection structure is in the third of the lower protrusion positions.When the number of the conductive pins 130 is 18, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 18 conductive pins 130, the first upper mismating protection structure is in the first and last of the upper protrusion positions and the first lower mismating protection structure is in the eighth of the lower protrusion positions. In the receptacle connector with double layer Y coding having 18 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.When the number of the conductive pins 130 is 20, the female connector includes the coding types of double layer X coding and double layer Y coding. In the receptacle connector with double layer X coding having 20 conductive pins 130, the first upper mismating protection structure is in the first and last of the upper protrusion positions and the first lower mismating protection structure is in the ninth of the lower protrusion positions. In the receptacle connector with double layer Y coding having 20 conductive pins 130, the first upper mismating protection structure is in the first and second of the upper protrusion positions, and the first lower mismating protection structure is in the first of the lower protrusion positions.Here, it is to be understood that in the plug connector of the coding type of double layer X coding, the first upper misplug prevention structure is located at the first and the last of the upper protrusion positions when the pin number is 4, 6, 8, 12, 14, 16, 18 or 20. When the pin number is 10, the first upper mis-mating protection structure is located at the fifth of the upper protrusion positions. When the pin number is 6, 8, 10, 12, 14, 16, 18, or 20, the first lower misplugging protection structure is located at the next to last one of the lower protrusion positions. When the pin number is 4, the first lower mis-mating protection structure is located at the last one of the lower protrusion positions. In the receptacle connector of the coding type of double layer Y coding, the first upper mismating protection structure is in the first and second of the upper protrusion positions and the first lower mismating protection structure is in the first of the lower protrusion positions. In the receptacle connector of the coding type of double layer Z coding, the first upper mismating protection structure is in the first and third of the upper protrusion positions and the first lower mismating protection structure is in the second of the lower protrusion positions. In the receptacle connector of the coding type of double layer W coding, the first upper mismating protection structure is in the first and fourth of the upper protrusion positions and the first lower mismating protection structure is in the third of the lower protrusion positions. By adjusting the arrangement position of the first upper mis-fit prevention structure with respect to the upper protrusions 110 and the arrangement position of the first lower mis-fit prevention structure with respect to the lower protrusions 120, multiple combinations of positions can be formed, so that multiple coding types of the connector can be defined from the different combinations of positions. Depending on the actual need, other types than X coding, Y coding, Z coding, W coding may be defined from the other combinations of positions.Optionally, it is provided that the first lower recessed protrusion 120 as the first lower recessed protrusion has a larger width than another lower protrusion 120 than the first lower recessed protrusion in an arrangement direction of the lower protrusions 120. This allows the lower protrusion 120 as the first lower mis-mating protection structure to have a sufficient width for forming a recess, which facilitates the manufacture of the recess. Here, the lower protrusion 120 as the first lower recessed protrusion has a width greater than 2 mm, and the other lower protrusion 120 as the first lower recessed protrusion has a width less than 2 mm. The upper protrusion 110 has a smaller width than the lower protrusion 120. The width of the conductive pin 130 is equal to the width of the lower protrusion 120.Optionally, it is provided that the center of the upper protrusion positions is arranged offset with respect to the center of the lower protrusion positions. That is, the center of the upper protrusions is offset from the center of the lower protrusions, so that the effect of misplugging protection can be further improved.Here, the center of the lower protrusion positions is located corresponding to the center of the lower row of conductive pins, the first of the upper protrusion positions is located on the left side of the upper row of conductive pins, and the last of the upper protrusion positions is located on the right side of the upper row of conductive pins, the distance between each two adjacent upper protrusion positions is the same, and the remaining protrusion positions other than the first and the last of the upper protrusion positions are each located between two adjacent conductive pins in the upper row. By the number of the upper protrusion positions being larger than the number of the lower protrusion positions by one, the width of the upper protrusion is smaller than the width of the lower protrusion. This makes it possible to provide sufficient space in the first surface to provide an additional upper protrusion. For example, the width of the upper protrusion is 0.7 mm and the width of the lower protrusion is 1.8 mm.The female connector according to the embodiments of the present application includes a first housing and a plurality of conductive pins accommodated in the first housing. The plurality of conductive pins are arranged in at least one row. The pin number of the female connector corresponds to the number of the conductive pins. The connector may be a single-layer, two-layer or multi-layer connector having a plurality of pins. By dividing a plurality of upper protrusion positions and a plurality of lower protrusion positions into two opposing surfaces on the inner side of the first housing of the connector, the upper protrusions are formed in the upper protrusion positions and the lower protrusions are formed in the lower protrusion positions. The first upper mis-fit prevention structure is formed by removing a protrusion in one of the upper protrusion positions or providing a protrusion different in structural shape from the protrusions in the other protrusion positions. The first lower mis-fit prevention structure is formed by removing a protrusion in one of the lower protrusion positions or providing a protrusion different in structural shape from the protrusions in the other lower protrusion positions. By adjusting the arrangement position of the first upper mis-fit prevention structure with respect to the upper protrusions and the arrangement position of the first lower mis-fit prevention structure with respect to the lower protrusions, multiple combinations of positions can be formed, so that multiple coding types of the connector can be defined from the different combinations of positions. This increases the pin count and possible keying types of the protrusions for a receptacle connector, and the plug connectors and receptacle connectors having equal keying types and pin count can be inserted and disassembled into each other to meet customer requirements in multiple application scenarios.The embodiments of the present application further provide a pluggable connector device including a female connector according to any of the above embodiments and a male connector having a corresponding number of positions and a corresponding coding type. If the pin number and the coding types of the male connector and the female connector are the same, the two connectors can be fitted into and pulled apart from each other. Referring to Figs. 9 to 12, the plug connector comprises:a second housing 200, wherein a plurality of pin holes 230 are provided on a mating surface of the second housing 200. The pin holes 230 in the plurality of positions are arranged evenly distributed in at least two rows.On a third surface of an outer side of the second housing 200, a plurality of strip-shaped upper protrusion grooves 210 are provided, which are recessed in a first direction from this side. The plurality of upper protrusion grooves 210 are spaced apart from each other and arranged side by side. On a fourth surface of an outer side of the first housing, which is opposite to the side provided with the upper protrusion grooves 210, a plurality of strip-shaped lower protrusion grooves 220 are provided, which are recessed in the first direction from this side. The plurality of lower protrusion grooves 220 are arranged side by side. Each upper protrusion groove 210 corresponds to an upper protrusion position and each lower protrusion groove 220 corresponds to a lower protrusion position. The upper protrusion groove 210 has a different width than the lower protrusion groove 220.In this case, a second misplugging protection structure is furthermore provided on at least one of the third and fourth surfaces, said second misplugging protection structure being formed such that it represents an empty projection groove position and / or a projection groove having a convex part in the form of a tricking tip, wherein the empty projection groove position is formed by completely filling a projection groove in the corresponding projection position; and in that the projection position in which the second misplugging protection structure is located represents a first coding, and the projection positions in which there is no second misplugging protection structure represent a second coding; wherein, in the case of plug connectors having an identical pin number but different coding types, at least two groups of codings are different between the upper projection positions or between the lower projection positions.It is to be understood that when the plug connector is inserted into the receptacle connector, the conductive pins protrude through the pin openings 230 into the second housing 200. Here, on an inner side surface of the first housing of the female connector, a plurality of upper protrusions and a plurality of lower protrusions are respectively provided, and accordingly, on an outer side surface of the second housing 200 of the male connector, a plurality of upper protrusion grooves 210 and a plurality of lower protrusion grooves 220 are respectively provided. When inserted, the upper protrusion is inserted into the upper protrusion groove 210 in the aligned protrusion position and the lower protrusion is inserted into the lower protrusion groove 220 in the aligned protrusion position.In the plug connector according to this embodiment, a misplugging protection structure is provided on at least one of the third and fourth surfaces on the outside of the second housing 200. The mismating protection structure on the third surface is a second upper mismating protection structure, and the mismating protection structure on the fourth surface is a second lower mismating protection structure. The second upper mis-fit prevention structure is formed by removing a protrusion groove in one of the upper protrusion positions (filling the protrusion groove so as to form a third surface-aligned surface) or providing an upper protrusion groove 210 different in shape from the protrusion grooves in the other protrusion positions. The second lower mis-fit preventing structure is formed by removing a protrusion groove in one of the lower protrusion positions (filling the protrusion groove so as to form a surface flush with the fourth surface) or providing a lower protrusion different in shape from the protrusions in the other lower protrusion positions. When the plug connector is inserted into the socket connector, the second upper misplugging protection structure on the third surface of the plug connector and the first upper misplugging protection structure on the first surface of the socket connector are matched to one another. The second lower misplugging structure on the fourth surface of the plug connector and the second lower misplugging structure on the second surface of the socket connector are matched to each other.Optionally, a plurality of conductive pin openings 230 are arranged in two rows, so that a dual-layer plug connector having a plurality of pins is formed, as shown in FIGS. 9 to 12. In the dual layer receptacle connector having a plurality of pins, the first upper mismating protection structure includes a filled first upper protrusion groove, i.e., the protrusion groove in one of the upper protrusion positions are completely filled, so that a surface aligned with the third surface is formed. Zone a2 represents a location where the second upper mis-mating protection structure is located, as shown in Figs. 9 to 12. The first lower mis-fit preventing structure is a first lower protrusion groove 220 having a protrusion, i.e., the central portion of a protrusion groove in one of the lower protrusion positions is completely filled so that a surface aligned with the fourth surface is formed. As shown in FIGS. 9 to 12, the region b2 represents a location where the second lower mis-mating protection structure is located. Here, the number of the conductive pin holes 230 is at least in the range of 4 to 20, and it is exemplarily shown in FIGS. 9 to 12 that the number of the conductive pin holes 230 is 10.When the number of the conductive pin holes 230 is 4, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pin holes 230 is 6, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pin holes 230 is 8, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pin holes 230 is 10, the plug connector includes the coding types of double layer X coding (see FIG. 9 ), double layer Y coding (see FIG. 10 ), double layer Z coding (see FIG. 11 ), and double layer W coding (see FIG. 12 ). When the number of the conductive pin holes 230 is 12, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pin holes 230 is 14, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pins 230 is 16, the plug connector comprises a coding type having double layer X coding, double layer Y coding, double layer Z coding and double layer W coding. When the number of the conductive pin holes 230 is 18, the plug connector includes the coding types of double layer X coding and double layer Y coding. When the number of the conductive pin holes 230 is 20, the plug connector includes the coding types of double layer X coding and double layer Y coding. In the male connector, "1" means that a protrusion groove (upper protrusion groove 210 / lower protrusion groove 220) is present in the corresponding protrusion position, and "0" means that the protrusion groove (upper protrusion groove 210 / lower protrusion groove 220) is removed in the corresponding protrusion position, and "1'-concave" means that the protrusion groove in the corresponding protrusion position is replaced with a protrusion groove having a protrusion. When the male connector and the female connector have the same pin number and the same coding types, the codes in the respective protrusion positions are the same.Optionally, it is provided that a protrusion groove having a convex part in the shape of a tricker tip has a width larger than the width of the lower protrusion groove 220 of a conventional shape in the arrangement direction of the lower protrusion grooves 220. Here, the width of the protrusion groove in the shape of a tricker tip is greater than 2 mm, and the width of the lower protrusion groove 220 of a conventional shape is less than 2 mm. The upper protrusion groove 210 has a smaller width than the lower protrusion groove 220. The width of the conductive pin hole 230 is equal to the width of the lower protrusion groove 220.Optionally, it is provided that the center of the upper protrusion positions is offset from the center of the lower protrusion positions in the arrangement direction of the protrusion positions on the third or fourth surface. That is, the center of the upper protrusions is offset from the center of the lower protrusions, so that the effect of misplugging protection can be further improved.Here, the center of the lower protrusion positions is arranged corresponding to the center of the lower row of conductive pin holes. The upper protrusion position is located between each two adjacent upper conductive pin holes. By the number of the upper protrusion positions being larger than the number of the lower protrusion positions by one, the width of the upper protrusion groove is smaller than the width of the lower protrusion groove. Thus, it is possible to provide sufficient space in the third surface to provide an additional upper protrusion groove.The socket connectors into which the plug connectors with different coding types can be inserted have different structures. The socket connector can only be inserted successfully into the plug connector if, during insertion, its structure and the first upper misinsertion protection structure and the first lower misinsertion protection structure of the plug connector can be matched to one another. At this time, the female connectors of different types are set to have the first upper misplugging protection structures and the first lower misplugging protection structures at different positions to prevent a male connector of a type other than the female connector from being inserted therein, so that the effect of misplugging protection is realized. Here, the plug connector in FIG. 9 is insertable into the receptacle connector in FIG. 1, the plug connector in FIG. 10 is insertable into the receptacle connector in FIG. 3, the plug connector in FIG. 11 is insertable into the receptacle connector in FIG. 5, and the plug connector in FIG. 12 is insertable into the receptacle connector in FIG. 7.Referring to FIG. 13, when the plug connector 2 of the stingable connector device is inserted into the socket connector 1, the conductive pins of the socket connector 1 protrude through the pin holes of the plug connector 2 into the second housing. Here, on an inner side surface of the first housing of the female connector 1, a plurality of upper protrusions and a plurality of lower protrusions are respectively provided, and accordingly, on an outer side surface of the second housing of the male connector 2, a plurality of upper protrusion grooves and a plurality of lower protrusion grooves are respectively provided. When inserted, the upper protrusion is inserted into the upper protrusion groove in the aligned protrusion position and the lower protrusion is inserted into the lower protrusion groove in the aligned protrusion position.Further, on at least one of the first and second surfaces on the inner side of the first housing, a mis-mating protection structure is provided. The mismating protection structure on the first surface is a first upper mismating protection structure, and the mismating protection structure on the second surface is a first lower mismating protection structure. The first upper mis-fit prevention structure is formed by removing a protrusion in one of the upper protrusion positions or providing an upper protrusion different in shape from the protrusions in the other protrusion positions. The first lower mis-fit preventing structure is formed by removing a protrusion in one of the lower protrusion positions or providing a lower protrusion different in shape from the protrusions in the other lower protrusion positions. By adjusting the arrangement position of the first upper mis-fit prevention structure with respect to the upper protrusions and the arrangement position of the first lower mis-fit prevention structure with respect to the lower protrusions, multiple combinations of positions can be formed, so that multiple coding types of the female connector can be defined from the different combinations of positions.On at least one of the third and fourth surfaces on the outer side of the second housing, a mis-mating protection structure is provided. The mismating protection structure on the third surface is a second upper mismating protection structure, and the mismating protection structure on the fourth surface is a second lower mismating protection structure. The second upper mis-fit prevention structure is formed by removing a protrusion groove in one of the upper protrusion positions or providing an upper protrusion groove different in shape from the protrusion grooves in the other protrusion positions. The second lower mis-fitting prevention structure is formed by removing a protrusion groove in one of the lower protrusion positions or providing a lower protrusion different in shape from the protrusions at the other lower protrusion positions. When the plug connector is inserted into the socket connector, the second upper misplugging protection structure on the third surface of the plug connector and the first upper misplugging protection structure on the first surface of the socket connector are matched to one another. The second lower misplugging structure on the fourth surface of the plug connector and the second lower misplugging structure on the second surface of the socket connector are matched to each other.It should be understood that the above description is only illustrative of preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that this present application is not limited to the specific embodiments described herein. Various obvious changes, modifications and substitutions may be made to those skilled in the art without departing from the scope of the present application. Therefore, although the present application is described in detail by the above embodiments, it is not limited to the above embodiments, but may also include many other equivalent embodiments without departing from the concept of the present application. The scope of the present application is determined by the scope of the appended claims.

Claims

A female connector characterized by comprising: a first housing and a plurality of conductive pins accommodated in the first housing, wherein the plurality of conductive pins are evenly arranged in at least two rows; a pin number of the female connector corresponds to the number of the conductive pins; on a first surface of an inner side of the first housing, a plurality of strip-shaped upper protrusions are provided protruding from this side in a first direction; the plurality of upper protrusions are spaced apart from each other and arranged side by side; on a second surface of another inner side of the first housing opposite to the side provided with the upper protrusions, a plurality of strip-shaped lower protrusions are provided protruding from this side in the first direction; the plurality of lower protrusions are arranged side by side; each upper protrusion corresponds to an upper protrusion position; each lower protrusion corresponds to a lower protrusion position; the upper protrusion has a different width than the lower protrusion; the first direction is a plug-in direction of a plug connector, wherein a first misplugging protection structure is provided on at least one of the first and second surfaces; the first misplugging protection structure comprises an empty protrusion position and / or a recessed protrusion; the empty protrusion position is formed by the absence of a protrusion in the corresponding protrusion position, and the recessed protrusion is a protrusion with a recess; wherein the protrusion position in which the first misplugging protection structure is located represents a first coding, and the protrusion positions in which no misplugging protection structure is located represent a second coding; and wherein, in female connectors having an equal pin number but different coding types, at least two groups of codings are different between the upper protrusion positions or between the lower protrusion positions.The receptacle connector of claim 1, characterized in that both the first surface and the second surface have the first mismating protection structure provided thereon; and the first mismating protection structure on the first surface is a first upper mismating protection structure, and the first mismating protection structure on the second surface is a first lower mismating protection structure; wherein the first upper mismating protection structure comprises a first upper empty protrusion position; and wherein the first lower mismating protection structure comprises a first lower recessed protrusion.The receptacle connector according to claim 2, characterized in that the number of the conductive pins is in the range of 4 to 20; and that the plurality of the conductive pins are arranged in two rows; wherein the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 4; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 6; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 8; the receptacle connector comprises the coding types of double layer X coding, double layer Y coding, double layer Z coding and double layer W coding when the number of the conductive pins is 10; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 12; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of the conductive pins is 14; the receptacle connector comprises the coding types of double layer X coding, double layer Y coding, double layer Z coding and double layer W coding when the number of the conductive pins is 16; the receptacle connector comprises the coding types of double layer X coding and double layer Y coding when the number of conductive pins is 18; the receptacle connector comprises the coding type of double layer X coding and double layer Y coding when the number of conductive pins is 20.The female connector according to claim 3, characterized in that the number of the lower protrusion positions corresponds to the number of the conductive pins in a row, and the number of the upper protrusion positions is larger by one than the number of the lower protrusion positions; that the first one of the lower protrusion positions and the first one of the upper protrusion positions are located on the same end of the female connector, and the remaining upper and lower protrusion positions are respectively arranged one after another in the same direction; that in the double layer X-coding type male connector, the first upper misplugging protection structure is located in the first and the last one of the upper protrusion positions when the pin number is 4, 6, 8, 12, 14, 16, 18 or 20; the first upper misplugging protection structure is located in the fifth one of the upper protrusion positions when the pin number is 10; the first lower mis-mating protection structure is located in the next last one of the lower protrusion positions when the pin number is 6, 8, 10, 12, 14, 16, 18 or 20; and the first lower mis-mating protection structure is located in the last one of the lower protrusion positions when the pin number is 4; in the receptacle connector with the coding type of double layer Y coding, the first upper mis-mating protection structure is located in the first and second ones of the upper protrusion positions and the first lower mis-mating protection structure is located in the first one of the lower protrusion positions; that in the receptacle connector having the coding type of double layer Z coding, the first upper mis-plug protection structure is located in the first and third of the upper protrusion positions and the first lower mis-plug protection structure is located in the second of the lower protrusion positions; and that in the receptacle connector having the coding type of double layer W coding, the first upper mis-plug protection structure is located in the first and fourth of the upper protrusion positions and the first lower mis-plug protection structure is located in the third of the lower protrusion positions.The female connector according to claim 4, characterized in that the first lower recessed protrusion has a larger width than the other lower protrusions than the first lower recessed protrusion in an arrangement direction of the lower protrusions.The female connector of claim 5, characterized in that the first lower recessed protrusion has a width greater than 2 mm and the other lower protrusions than the first lower recessed protrusion has a width less than 2 mm.The female connector according to claim 4, characterized in that the center of the upper protrusion positions is offset from the center of the lower protrusion positions.The female connector according to claim 7, characterized in that the center of the lower protrusion positions is arranged corresponding to the center of the lower row of conductive pins.The receptacle connector of claim 8, characterized in that the first of the upper protrusion positions is located on the left side of the upper row of conductive pins and the last of the upper protrusion positions is located on the right side of the upper row of conductive pins, wherein the distance between each two adjacent upper protrusion positions is the same, and wherein the remaining protrusion positions other than the first and the last of the upper protrusion positions are each located between two adjacent conductive pins in the upper row.The socket connector of claim 8, characterized in that the upper protrusion has a smaller width than the lower protrusion.A pluggable connector device, characterized by comprising: a female connector according to any one of claims 1 to 10; and a male connector having a corresponding pin number and a corresponding coding type, characterized in that the male connector comprises: a second housing, on a mating surface of which a plurality of pin holes are provided; wherein the plurality of pin holes are arranged evenly distributed in at least two rows; the pin number of the male connector corresponds to the number of pin holes; a plurality of strip-shaped upper protrusion grooves are provided on a third surface of an outer side of the second housing, which are recessed in a first direction from that side; the plurality of upper protrusion grooves are spaced apart from each other and arranged side by side; on a fourth surface of another outer side of the first housing, which is opposite to the side provided with the upper protrusion grooves, a plurality of strip-shaped lower protrusion grooves are provided, which are recessed in the first direction from this side; the plurality of lower protrusion grooves are arranged side by side; each upper protrusion groove corresponds to an upper protrusion position and each lower protrusion groove corresponds to a lower protrusion position; the upper protrusion groove has a different width than the lower protrusion groove; and at least one of the third and fourth surfaces is further provided with a second mis-fit preventing structure configured to have an empty protrusion groove position and / or a protrusion groove having a convex part in the form of a tricack tip, the empty protrusion groove position being formed by completely filling a protrusion groove in the corresponding protrusion position; and that the protrusion position in which the second misplugging structure is located represents a first coding and the protrusion positions in which no second misplugging structure is located represent a second coding; wherein in plug connectors with an identical pin number but different coding types, at least two groups of codings are different between the upper protrusion positions or between the lower protrusion positions.The pluggable connector device according to claim 11, characterized in that, when the plug connector is inserted into the receptacle connector, the conductive pins project into the second housing through the pin holes; wherein a plurality of upper protrusions and a plurality of lower protrusions are provided on an inner side surface of the first housing of the receptacle connector, respectively, and a plurality of upper protrusion grooves and a plurality of lower protrusion grooves are provided on an outer side surface of the second housing of the plug connector, respectively; and wherein, when the plug is inserted, the upper protrusions are inserted into the upper protrusion grooves in the aligned protrusion positions and the lower protrusions are inserted into the lower protrusion grooves in the aligned protrusion positions.

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