Conductive core for connector, connector, connector assembly and electronic equipment

Abstract

The utility model discloses a conductive core for a connector, the connector, a connector assembly and electronic equipment. Wherein the conductive core comprises a connection terminal used for being connected with external equipment and a metal strip, and the metal strip comprises a first end, a second end and a buffer section formed between the first end and the second end. The first end is connected with the connecting terminal, the second end serves as a pin and is used for being connected with a circuit board of the electronic equipment, and the buffer section is in an undulating wave shape or a sawtooth shape and is roughly equal to the two sections in width. According to the embodiment of the invention, the buffer section is arranged and used for absorbing the stress borne by the conductive core, so that the strength of the conductive core is not damaged while the pins and the circuit board are in high-reliability connection, and the manufacturing efficiency of the conductive core can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a conductive core for a connector, a connector, a connector assembly and an electronic device. Background Art

[0002] For example, in the known embodiment disclosed in the publication number CN112003051A, the conductive core of the connector includes a solder pin disposed at one end thereof for soldering to a circuit board, and a connecting portion disposed at the other end thereof for connecting to a conductive structure of an external connector. When the conductive structure of the external connector is connected to the connecting portion, stress may exist between the conductive structure and the connecting portion. In fact, the stress that affects the reliability of the connection between the solder pin and the circuit board includes not only the force exerted by the external connector on the connecting portion, but also the force caused by external vibration during the use of the connector.

[0003] In order to prevent the above stress from being transmitted to the solder pin and affecting the connection reliability between the solder pin and the circuit board, a flexible portion is provided between the connecting portion and the solder pin. When the connecting portion is subjected to the force of the external connector (specifically, the conductive structure of the connector), the flexible portion can buffer or weaken the force transmitted to the solder pin through its own deformation, thereby improving the connection reliability between the solder pin and the circuit board.

[0004] In the known embodiment, the following flexible portion solutions are provided. For example, the flexible portion is a portion with a smaller cross-sectional profile disposed between the connecting portion and the welding foot. Alternatively, the flexible portion is a section of a cable with good flexibility connecting the connecting portion and the welding foot. When the connecting portion is subjected to an external force, the cable can absorb the external force through its own deformation, thereby reducing or preventing the external force from being transmitted to the welding foot.

[0005] However, the above-mentioned flexible portion solution has some defects to a greater or lesser extent.

[0006] For example, in an embodiment where the flexible portion is a section with a smaller cross-sectional profile disposed between the connecting portion and the solder foot, the width of the conductive core portion material is essentially narrowed, which results in the conductive core having a stress buffering effect, but with a loss in strength. Those skilled in the art should know that stress is easily concentrated in the narrowed or weakened section of the material. Therefore, the flexible section of this embodiment is more likely to be at risk of breaking due to stress concentration. In addition, the above-mentioned method of narrowing the material also requires additional narrowing processes to be applied to the conductive core, such as punching, cutting, etc., in order to finally obtain the flexible portion, which reduces the manufacturing efficiency of the conductive core.

[0007] In the embodiment where the flexible portion is a section of a cable with good flexibility connecting the connecting portion and the soldering foot, an additional cable is required to connect the soldering foot and the connecting portion, which also reduces the manufacturing efficiency of the conductive core. Utility Model Content

[0008] In view of this, the utility model provides a conductive core, a connector, a connector assembly and an electronic device for a connector, which absorbs the stress on the conductive core to maintain a high-reliability connection between the pin and the circuit board without damaging the strength of the conductive core and can improve the manufacturing efficiency of the conductive core.

[0009] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0010] A conductive core for a connector includes: a connection terminal for connecting to an external device, and a metal strip. The metal strip includes a first hardened section, a second hardened section, and a buffer section integrally formed between the two hardened sections. The first hardened section is connected to the connection terminal, and the second hardened section is used as a pin for connecting to a circuit board. The buffer section is wavy or sawtooth-shaped with ups and downs, and the width of the buffer section is substantially equal to that of the two hardened sections.

[0011] Preferably, the number of the second hardening section is one.

[0012] A connector comprises: a housing and a conductive core as described in the above embodiment. The conductive core is partially disposed in the housing, and an outer end of the second hardened section is exposed from the housing.

[0013] Preferably, the housing comprises:

[0014] The main body is provided with a hollow chamber for accommodating the conductive core therein, and one end of the hollow chamber is open;

[0015] A rear cover connected to the open end of the main body member and provided with a through hole, through which the second hardened section passes;

[0016] The flexible buffer is arranged between the main body and the back cover to buffer vibration.

[0017] Preferably, a buckle is provided on the outer wall of the opening end of the main body, and an opening for the buckle to be inserted is provided through the side wall of the rear cover. The cross-sectional shape of the opening is gourd-shaped or 8-shaped, including protrusions extending inward from two opposite inner side walls of the opening, and the two protrusions divide the opening into two opening parts arranged along the axial direction: a first opening part close to the main body and a second opening part away from the main body. The cross-sectional area of ​​the first opening part is larger than the cross-sectional area of ​​the buckle, and the cross-sectional area of ​​the second opening part is approximately equal to the cross-sectional area of ​​the buckle. The buckle is inserted into the second opening part and is stopped by the two protrusions.

[0018] Preferably, the outer wall thickness of the main body at the opening end is reduced to form a step, and the buckle is formed on the step. There are two flexible buffers, which are sleeved outside the step and are respectively located on both sides of the buckle.

[0019] Preferably, a lining structure for accommodating part of the conductive core is provided in the housing, and the lining structure comprises a first lining part which is roughly cylindrical, and a second lining part which is butt-jointed with the end of the first lining part and is roughly conical. The end of the first lining part which is opposite to the second lining part is bent radially outward to form a limit hook, and a flexible buffer is clamped between the limit hook and the buckle.

[0020] Preferably, the second lining portion includes a plurality of elastic inclined petals, which define a substantially conical closing channel. The outer wall of the connecting terminal is provided with a plurality of outwardly tilted spring sheets and a plurality of limiting protrusions, and the limiting protrusions are located between the spring sheets and the connecting terminal. The connecting terminal passes through the closing channel, and the end of the inclined petal is limited between the spring sheet and the limiting protrusion.

[0021] Preferably, the internal space of the shell includes an expansion cavity and a necking cavity connected to the expansion cavity, and the inner diameter of the necking cavity is smaller than the inner diameter of the expansion cavity. The lining structure is completely accommodated in the expansion cavity, and the connecting terminal is accommodated in the necking cavity. A radial limiting channel is formed on the inner wall of the necking cavity, and the connecting terminal is inserted into the radial limiting channel, and the radial limiting channel is used to radially limit the connecting terminal.

[0022] Preferably, the connector is a female connector, the inner diameter of the necking cavity is uniform, and the necking cavity as a whole forms a radial limiting passage. Alternatively, the connector is a male connector, and part of the inner wall of the necking cavity protrudes inward to form a radial limiting passage.

[0023] Preferably, the open end of the shell is inserted into a flexible sealing plug in an interference fit manner, and one end of the second hardened section extends through the flexible sealing plug to the outside of the shell.

[0024] A connector assembly comprises: the connector as described in the above embodiment, which is defined as a first connector; and a second connector which is detachably plugged into and matched with the first connector.

[0025] An electronic device comprises: a housing, a circuit board arranged in the housing, and a connector as described in the above embodiment. The connector is fixedly arranged on a side wall of the housing, and the second hardening section is connected to the circuit board.

[0026] This embodiment provides a wavy buffer zone with a width substantially equal to that of the two hardened zones to absorb the stress on the conductive core so as to maintain a high-reliability connection between the pin and the circuit board without damaging the strength of the conductive core and to improve the manufacturing efficiency of the conductive core. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A It is a three-dimensional exploded view of a mother-on-board connector using a conductive core according to an embodiment of the utility model;

[0028] Figure 1B A top view of a mother-on-board connector using a conductive core according to an embodiment of the utility model;

[0029] Figure 1C for Figure 1B Sectional view of section AA;

[0030] Figure 1D A top view of a mother-on-board connector using a conductive core according to another embodiment of the present invention;

[0031] Figure 1E for Figure 1D Sectional view of the CC section;

[0032] Figure 1F A schematic diagram of the structure in which the connecting terminal of the conductive core is a female terminal;

[0033] Figure 1G for Figure 1F The main view of

[0034] Figure 1H for Figure 1F A schematic diagram of the structure of the alternative scheme;

[0035] Figure 2A It is a three-dimensional exploded view of a board male connector using a conductive core according to an embodiment of the utility model;

[0036] Figure 2B A top view of a board male connector using a conductive core according to an embodiment of the utility model;

[0037] Figure 2C for Figure 2B Cross-sectional view of the middle BB section;

[0038] Figure 2D A schematic diagram of a structure in which the connecting terminal of the conductive core is a male terminal;

[0039] Figure 2E for Figure 2D The main view of

[0040] Figure 2F for Figure 2D A schematic diagram of the structure of the alternative scheme;

[0041] Figure 3 It is a structural diagram of the male wire connector and the female board connector when they are mated;

[0042] Figure 4 This is a structural diagram of the male board connector and the female wire connector when mating. DETAILED DESCRIPTION

[0043] Referring to the description of the known embodiment provided in CN112003051A, the connector 100 of this embodiment can also be used in a variety of electronic devices including inverters to achieve electrical connection between the electronic device and an external device (such as other electronic devices or external cables).

[0044] The scheme of fixing the connector 100 to the electronic device can also be found in the description of CN112003051A, which will not be described here. The electronic device includes a housing and a circuit board disposed in the housing. The connector 100 is fixedly disposed on the side wall of the housing, and the pins of the connector 100 (the second hardened section 10242, described below) are connected to the circuit board, and the connection method can be, for example, welding.

[0045] In this embodiment, the connector 100 may be as follows: Figures 1A to 1G The motherboard connector shown can also be FIG. 2A to FIG. 2E The board male connector shown in the figure is not limited to this embodiment. Figure 3 and Figure 4 As shown, the connector assembly 1000 provided in this embodiment includes a connector 100 (defined as a first connector 100) as described in the following embodiment, and a second connector 200 that can be detachably plugged and matched with the first connector 100. The first connector 100 can be the above-mentioned board female connector or board male connector, and accordingly, the second connector 200 is a board male / line male connector or a board female / line female connector, which is not limited in this embodiment.

[0046] like Figure 1A , Figure 1C , Figure 2A and Figure 2C As shown, the connector 100 includes a housing 101 and a conductive core 102 partially disposed in the housing 101. The housing 101 includes two parts: a main body 1011 that is generally cylindrical, a rear cover 1012 that is detachably connected to the main body 1011, and a flexible buffer 1013 disposed between the main body 1011 and the rear cover 1012 for buffering vibration. The main body 1011 is provided with a hollow chamber 1014 for accommodating the conductive core 102 therein, and one end of the hollow chamber 1014 (such as Figure 1C and Figure 2C The back cover 1012 is detachably connected to the open end of the main body 1011.

[0047] The rear cover 1012 and the main body 1011 can be connected by snap-fitting, such as Figure 1A and Figure 2AAs shown, a buckle 1015 is provided on the outer wall of the opening end of the main body 1011 , an opening 1016 is penetrated through the side wall of the rear cover 1012 , and the buckle 1015 is embedded in the opening 1016 to achieve a fixed connection between the rear cover 1012 and the main body 1011 .

[0048] like Figure 1B , Figure 2B As shown, in one embodiment, the cross-sectional shape of the opening 1016 is gourd-shaped or 8-shaped, and includes protrusions 1016c extending inward from two opposite inner side walls of the opening 1016, and the two protrusions 1016c respectively press against two opposite outer side walls of the buckle 1015. The two protrusions divide the opening 1016 into two opening parts arranged along the axial direction: a first opening part 1016a close to the main body 1011 and a second opening part 1016b away from the main body 1011. The cross-sectional area of ​​the first opening part 1016a is larger than the cross-sectional area of ​​the buckle 1015, and the cross-sectional area of ​​the second opening part 1016b is substantially equal to the cross-sectional area of ​​the buckle 1015, that is, the cross-sectional area of ​​the second opening part 1016b is smaller than the cross-sectional area of ​​the first opening part 1016a. The buckle 1015 is embedded in the second opening part 1016b and is stopped by the two protrusions 1016c to prevent the buckle 1015 from retreating into the first opening part 1016a.

[0049] During assembly, the buckle 1015 is first inserted into the larger first opening portion 1016a, and then the back cover 1012 is pushed forward so that the buckle 1015 crosses the protrusion 1016c and enters the smaller second opening portion 1016b. Thus, the two protrusions 1016c can limit and stop the buckle 1015, thereby preventing the back cover 1012 from rotating in the circumferential direction and fixing it in the axial direction. In this way, the buckle connection design can not only facilitate the assembly of the back cover 1012 and the main body 1011, but also fix and limit the back cover 1012 after the two are assembled, so as to prevent the back cover 1012 from moving in the circumferential direction and / or axial direction relative to the main body 1011. Since the second hardened section 10242 of the conductive core 102 passes through the back cover 1012, the relative fixation of the back cover 1012 is beneficial to the structure and position stability of the conductive core 102, and further beneficial to the reliability of its connection with the circuit board.

[0050] Furthermore, the thickness of the outer wall of the main body 1011 at the open end is reduced to form a step 1017, and the buckle 1015 is formed on the step 1017. There are two flexible buffers 1013, which are sleeved outside the step 1017 and respectively located on both sides of the buckle 1015. In this way, the flexible buffer 1013 can buffer external vibration, thereby providing vibration damping protection for the conductive core 102 (especially the second hardened section 10242 used for connecting with the circuit board), reducing or even avoiding the risk of disconnection between the second hardened section 10242 and the circuit board due to vibration transmission to the second hardened section 10242.

[0051] The housing 101 is provided with a lining structure 1018 for accommodating part of the conductive core 102 therein. The lining structure 1018 includes a first lining portion 1018a which is roughly cylindrical, and a second lining portion 1018b which is butt-jointed with the end of the first lining portion 1018a and is roughly conical. The end of the first lining portion 1018a which is opposite to the second lining portion 1018b is bent radially outward to form a limit hook 1018c. One of the flexible buffer members 1013 (such as Figure 1C and Figure 2C The right side flexible buffer member 1013 shown in FIG. 1 is clamped between the limit hook 1018c and the buckle 1015, and the other flexible buffer member 1013 (as shown in FIG. Figure 1C and Figure 2C The left flexible buffer member 1013 is shown to be clamped between the stop surface of the step 1017 and the buckle 1015 and corresponds to the first opening portion 1016a.

[0052] The second lining portion 1018b includes a plurality of elastic inclined petals 1018d, and the plurality of inclined petals 1018d define a substantially conical closing channel 1018e. The outer wall of the connecting terminal 1021 (described below) of the connector 100 is provided with a plurality of outwardly tilted spring pieces 1022 and a plurality of limiting protrusions 1023, and the limiting protrusions 1023 are located between the spring pieces 1022 and the connecting terminal 1021. The connecting terminal 1021 passes through the closing channel 1018e, and the end of the inclined petal 1018d is limited between the spring piece 1022 and the limiting protrusion 1023. Referring to the description of CN112003051A, when the conductive core 102 is inserted into the lining structure 1018, the plurality of inclined petals 1018d abut against the outer side surface of the spring piece 1022, so that the spring piece 1022 is elastically deformed inward. After the conductive core 102 is pushed in further so that the spring sheet 1022 passes over the plurality of inclined petals 1018d, the spring sheet 1022 returns to the outwardly tilted state under the action of its own elastic force. At this time, the end of the inclined petal 1018d enters between the spring sheet 1022 and the limiting protrusion 1023, thereby preventing the conductive core 102 from falling out of the housing 101.

[0053] The internal space of the housing 101 includes an expanded cavity 1014 (i.e., a hollow chamber 1014 defined by the main body 1011), and a necked cavity 1019 connected to the expanded cavity 1014, wherein the inner diameter of the necked cavity 1019 is smaller than the inner diameter of the expanded cavity 1014. The lining structure 1018 is completely accommodated in the expanded cavity 1014, and the connecting terminal 1021 is accommodated in the necked cavity 1019. A radial limiting passage 1019a is formed on the inner wall of the necked cavity 1019, and the connecting terminal 1021 is inserted into the radial limiting passage 1019a. The inner diameter of the radial limiting passage 1019a is slightly larger than the outer diameter of the connecting terminal 1021, so as to radially limit the connecting terminal 1021. Compared with CN112003051A, in which the connecting terminal part of the conductive core is cantilevered in the shell, this embodiment radially limits the connecting terminal 1021 by setting a radial limiting channel 1019a with an inner diameter slightly larger than the outer diameter of the connecting terminal 1021 in the necking cavity 1019, thereby ensuring the stability of the position of the conductive core 102 in the shell 101.

[0054] In this embodiment, "slightly larger than" can be interpreted as the connection terminal 1021 and the radial limiting channel 1019a are clearance-matched, and the clearance between the two is between 0.1-0.5mm. That is, the inner diameter of the radial limiting channel 1019a is 0.2-1.0mm larger than the outer diameter of the connection terminal 1021. In this way, the clearance between the two is guaranteed to achieve the assemblability of the conductive core 102, and the radial movement of the connection terminal 1021 of the conductive core 102 is reduced, so as to avoid the connection terminal 1021 from swinging in the housing 101 when subjected to external vibration.

[0055] Furthermore, the connection terminal 1021 is radially limited by the channel 1019a, and one end (outer end) of the lining structure 1018 is fixed to the outer wall of the connection terminal 1021 by means of a plurality of inclined petals 1018d, and the other end (inner end) is fixed between the open end of the main body 1011 and the axial flange by means of a limiting hook 1018c, thereby achieving axial fixation of the lining structure 1018 in the housing 101. Similarly, in order to achieve radial limitation, the outer diameter of the lining structure 1018 can also be designed to be slightly smaller than the inner diameter of the expansion cavity 1014.

[0056] like Figure 1C As shown, in some embodiments, the inner diameter of the necking cavity 1019 is uniform, so that the necking cavity 1019 as a whole forms a radial limiting channel 1019a. Figure 2C As shown, in other embodiments, part of the inner wall of the necking cavity 1019 protrudes inward to form a radial limiting channel 1019a.

[0057] As described above, the connection terminal 1021 of the conductive core 102 is used to connect to an external device. The type of the connection terminal 1021 determines the type of the connector 100. Specifically, when the connection terminal 1021 is a female terminal, the connector 100 is a female board connector. When the connection terminal 1021 is a male terminal, the connector 100 is a male board connector.

[0058] Combination Figure 1F , Figure 1G , Figure 2D and Figure 2D As shown, the conductive core 102 further includes a metal strip 1024 that is substantially in the shape of a strip. The metal strip 1024 is made of a metal material such as copper, and includes a first hardened section 10241 formed at a first end, a second hardened section 10242 formed at a second end opposite to the first end, and a buffer section 10243 that is integrally formed between the first hardened section 10241 and the second hardened section 10242. The first hardened section 10241 is connected to the connection terminal 1021, such as by welding, and the second hardened section 10242 is used as a pin for connection to a circuit board. The buffer section 10243 is substantially in a wavy or sawtooth shape with ups and downs, and the width of the buffer section 10243 is substantially equal to that of the first hardened section 10241 and the second hardened section 10242.

[0059] A wavy or serrated buffer section 10243 having a width substantially equal to that of the two hardened sections is provided to absorb the stress on the conductive core 102 so that the pins and the circuit board maintain a high reliability connection without damaging the strength of the conductive core 102 and improve the manufacturing efficiency of the conductive core 102.

[0060] The back cover 1012 is provided with a through hole, and the second hardened section 10242 passes through the through hole, so that the outer end of the second hardened section 10242 is exposed from the housing 101 to achieve connection with the circuit board.

[0061] In another alternative embodiment, the conductive core 102 may be inserted and fixed in the housing 101 using a plug-type structure. Figure 1D and Figure 1E As shown, the open end of the housing 101 is inserted into a flexible sealing plug 1020 in an interference fit manner, and the second hardened section 10242 is also provided with a through hole, so that the outer end of the second hardened section 10242 can pass through the flexible sealing plug 1020 and extend to the outside of the housing 101. In this embodiment, the flexible sealing plug 1020 can simultaneously have the functions of the back cover 1012 and the flexible buffer 1013 in the above-mentioned embodiment, that is, only the flexible sealing plug 1020 is used to achieve the dual functions of fixing the conductive core 102 and buffering vibration, so that the structure of the housing 101 and the assembly of the conductive core 102 are relatively simpler.

[0062] In this embodiment, the second hardened section 10242 as the pin is one in number. Due to the structural design of this embodiment, the performance of the conductive core 102 in buffering and absorbing stress is better than that of the prior art, so the reliability of the connection between the pin (the second hardened section 10242) and the circuit board is better. Therefore, compared with the prior art, the connection strength between the pin and the circuit board is lower, which provides conditions for reducing the number of pins. The reduction in the number of pins can reduce the production process of the metal strip 1024, thereby improving the production efficiency of the metal strip 1024.

[0063] In this embodiment, the upper surface and the side wall of the second hardened section 10242 are respectively provided with first tenons 1025, the first tenons 1025 on the upper surface and the first tenons 1025 on the side wall are arranged at intervals along the length direction, and the surfaces of the two groups of first tenons 1025 facing each other are straight surfaces, and the surfaces away from each other are inclined surfaces. Through the two groups of first tenons 1025, the second hardened section 10242 and the rear cover 1012 can be plugged and fixed.

[0064] like Figure 1H and Figure 2F As shown in FIG. 1 , in another alternative embodiment, both groups of first tenons 1025 are disposed on the side wall of the second hardened section 10242. Similarly, the two groups of first tenons 1025 are spaced apart along the length direction, and the outer surface of the group of first tenons 1025 located on the outside along the length direction is an inclined surface, and the structure of the group of first tenons 1025 located on the inside can be the same as that of FIG. Figure 1F and Figure 2D The first tenon 1025 of the embodiment shown has the same structure, that is, one straight surface and one inclined surface, and can also be as follows Figure 1H and Figure 2F Both sides shown are straight.

[0065] Similarly, a group of second tenons 1026 are provided on the upper and lower surfaces of the second hardened section 10242 along the length direction, and the second tenons 1026 protrude outward along the height direction. In addition, the outer surface of the second protrusion 1026 along the length direction is an inclined surface. Along the length direction, the second protrusion 1026 is located outside the outermost first tenon 1025. The second tenons 1026 are used to achieve a fixed connection between the second hardened section 10242 and the circuit board.

[0066] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A conductive core for a connector, characterized in that: include: Connection terminals, used for connection with external devices; The metal strip comprises: a first hardened section formed at a first end, a second hardened section formed at a second end opposite to the first end, and a buffer section integrally formed between the first hardened section and the second hardened section; the first hardened section is connected to the connecting terminal, the second hardened section is used as a pin for connecting to a circuit board, the buffer section is wavy or sawtooth-shaped with ups and downs, and the width of the buffer section is substantially equal to that of the first hardened section and the second hardened section.

2. The conductive core according to claim 1, characterized in that The number of the second hardened section is one.

3. A connector, characterized in that: include: case; The conductive core according to claim 1 or 2, wherein the conductive core is partially disposed in the shell, and an outer end of the second hardened section is exposed from the shell.

4. The connector according to claim 3, characterized in that The housing comprises: The main body is provided with a hollow chamber for accommodating the conductive core therein, and one end of the hollow chamber is open; a rear cover connected to the open end of the main body and provided with a through hole, through which the second hardened section passes; The flexible buffer is arranged between the main body and the back cover and is used for buffering vibration.

5. The connector according to claim 4, characterized in that: The outer wall of the main body at the opening end is provided with a buckle, and the side wall of the rear cover is penetrated with an opening for the buckle to be inserted, and the cross-sectional shape of the opening is gourd-shaped or 8-shaped, including protrusions extending inward from two opposite inner side walls of the opening, and the two protrusions divide the opening into two opening parts arranged along the axial direction: a first opening part close to the main body and a second opening part away from the main body; The cross-sectional area of ​​the first opening portion is larger than the cross-sectional area of ​​the buckle, and the cross-sectional area of ​​the second opening portion is substantially equal to the cross-sectional area of ​​the buckle; the buckle is embedded in the second opening portion and is stopped by the two protrusions.

6. The connector according to claim 5, characterized in that The outer wall thickness of the main body at the open end is thinned to form a step, and the buckle is formed on the step; the number of the flexible buffer parts is two, and the two flexible buffer parts are sleeved outside the step and are respectively located on both sides of the buckle.

7. The connector according to claim 6, characterized in that A lining structure for accommodating part of the conductive core is provided in the shell, and the lining structure includes a first lining part which is roughly cylindrical, and a second lining part which is connected to the end of the first lining part and is roughly conical; the end of the first lining part which is away from the second lining part is bent radially outward to form a limiting hook, and one of the flexible buffer parts is clamped between the limiting hook and the buckle.

8. The connector according to claim 7, wherein: The second lining portion includes a plurality of elastic inclined petals, which define a roughly conical closing channel; the outer wall of the connecting terminal is provided with a plurality of outwardly tilted spring sheets and a plurality of limiting protrusions, and the limiting protrusions are located between the spring sheets and the connecting terminal; the connecting terminal passes through the closing channel, and the end of the inclined petal is limited between the spring sheet and the limiting protrusion.

9. The connector according to claim 7, characterized in that: The internal space of the shell includes an expansion cavity and a necking cavity connected to the expansion cavity, the inner diameter of the necking cavity is smaller than the inner diameter of the expansion cavity; the lining structure is completely accommodated in the expansion cavity, and the connecting terminal is accommodated in the necking cavity; a radial limiting channel is formed on the inner wall of the necking cavity, the connecting terminal is inserted into the radial limiting channel, and the radial limiting channel is used to radially limit the connecting terminal.

10. The connector according to claim 9, characterized in that The connector is a female board connector, and the inner diameter of the necking cavity is uniform, so that the necking cavity as a whole forms the radial limiting channel; or, the connector is a male board connector, and part of the inner wall of the necking cavity protrudes inward to form the radial limiting channel.

11. The connector according to claim 3, characterized in that The open end of the shell is inserted into a flexible sealing plug in an interference fit manner, and one end of the second hardened section extends through the flexible sealing plug to the outside of the shell.

12. A connector assembly, characterized in that: include: The connector according to any one of claims 3 to 11, wherein the connector is defined as a first connector; The second connector is detachably plugged into and mated with the first connector.

13. An electronic device, characterized in that: include: shell; A circuit board is arranged in the housing; According to the connector as described in any one of claims 3-11, the connector is fixedly arranged on the side wall of the housing, and the second hardened section is connected to the circuit board.

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