Charging socket with limiting structure

Abstract

The utility model discloses a charging socket with a limiting structure, which is characterized in that before a fixed part assembly is installed and displaced, a certain distance exists between the fixed part assembly and a shell and between the fixed part assembly and a power terminal so as to ensure the requirement of post-installation of a wire harness; the limiting ribs and the limiting bosses in the shell are matched with the limiting grooves of the fixing piece assembly, and plane limiting and axial limiting are carried out in the process that the fixing piece assembly is movably installed in the shell. A fixing part and heat conduction silica gel are assembled to form a fixing part assembly, and the heat conduction silica gel does not affect the installation of a charging socket part on the fixing part, so that temperature change information is transmitted through a contact point of a water drop type thermistor in the heat conduction silica gel, and the temperature monitoring of a power terminal is realized; the charging socket is simple in structure and convenient to install, can realize later installation of the cable, improves the temperature detection accuracy of the power terminal, and ensures the safety and reliability of components such as a fixed part and the power terminal in the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of charging sockets, in particular to a charging socket with a limiting structure. Background Art

[0002] For new energy vehicle charging sockets, the common installation sequence is to assemble the fixings, power terminals and wires into accessories and then install and fix them, followed by installing related accessories such as sealing rings and tail covers. This installation sequence is cumbersome and laborious, and pre-assembly can easily lead to quality problems such as poor limiting.

[0003] Moreover, the fixings, power terminals and other components are directly arranged in the shell, and only certain axial limits are performed. It is difficult to ensure the installation reliability of the fixings, power terminals and other components in the shell, which makes the installation of the charging socket inconvenient and the installation strength low, thereby affecting the service life of the charging socket. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a limiter for a charging socket and a charging socket, which can realize the post-installation of cables, improve the accuracy of temperature detection of power terminals, and ensure the safety and reliability of components such as fixings and power terminals in the shell.

[0005] The utility model solves the above problems through the following technical solutions:

[0006] A charging socket with a limiting structure, comprising: a fixing component assembly assembled by fixing components and thermally conductive silicone, a power terminal, a PCBA board, a shell tail cover, a shell and a cable. Before the fixing component assembly is installed and displaced, there is a certain distance between it and the shell and the power terminal installation position to ensure the requirements of the wiring harness after installation;

[0007] Among them, a plurality of limiting ribs and a plurality of limiting bosses are formed in the shell, and a plurality of limiting grooves corresponding to the limiting ribs and the limiting bosses in the shell are formed in the fixing component assembly. The limiting ribs in the shell cooperate with the limiting grooves of the fixing component assembly to perform planar limiting during the process of moving and installing the fixing component assembly in the shell; the limiting bosses in the shell cooperate with the limiting grooves of the fixing component assembly to perform axial limiting during the process of moving and installing the fixing component assembly in the shell;

[0008] The power terminal is arranged through the fixing component and is against the thermal conductive silicone;

[0009] A PCBA board is arranged on one side of the fixing component away from the housing, and a water drop type thermistor on the PCBA board penetrates the fixing component and is arranged in the thermal conductive silicone, so as to transmit temperature change information through the contact point of the water drop type thermistor in the thermal conductive silicone, thereby realizing temperature monitoring of the power terminal;

[0010] The cable passes through a shell tail cover that covers one end of the shell and is connected to a power terminal in the shell to realize rear installation of the cable.

[0011] As a further improvement, the power terminal is provided with a first circumferential groove, a second circumferential groove, a third circumferential groove and a concave surface, wherein the first circumferential groove is used to limit and fix with the snap-on of the shell to prevent the power terminal from retreating from the shell; the second circumferential groove is used to set a terminal sealing ring to seal the power terminal and the shell; the third circumferential groove serves as a limiting structure for the fixing part and the power terminal; and the concave surface is formed along the lower side of the terminal welding end and is connected with the third circumferential groove, which is used to limit and prevent rotation of the terminal welding end and the fixing part.

[0012] As a further improvement, the thermally conductive silicone is formed with a plurality of fixing fitting positions, a sensor mounting position for mounting a temperature sensor, and a terminal contact arc surface for contacting the power terminal;

[0013] The fixing component is formed with a plurality of silicone matching positions plugged into the thermally conductive silicone, a signal terminal mounting position for mounting the signal terminal, a power terminal mounting position for mounting the power terminal, and a PE terminal mounting position for mounting the PE terminal; the thermally conductive silicone is embedded in the fixing component and avoids the signal terminal mounting position, the power terminal mounting position, and the PE terminal mounting position, so that the thermally conductive silicone does not affect the installation of the charging socket component on the fixing component.

[0014] As a further improvement, the thermally conductive silicone also has a thermally conductive silicone body and a silicone thickened portion, and the sensor mounting position is arranged through the thermally conductive silicone body and the silicone thickened portion. The number of times the fixing part and the thermally conductive silicone are engaged is increased through the silicone thickened portion, thereby increasing the matching force.

[0015] As a further improvement, the thermally conductive silica gel is two pieces, which are symmetrically embedded in the fixing piece and have an interference fit with the power terminal.

[0016] As a further improvement, the power terminal mounting position is provided with a chamfered structure to facilitate pushing the power into place during the displacement of the fixing; the PE terminal mounting position is provided with a fixing bevel or chamfer to facilitate pushing the fixing into the limit point during the displacement; a local protrusion of the fixing is added between the rear side of the fixing and the power terminal to increase the creepage distance between the power terminal and the signal terminal.

[0017] As a further improvement, the limiting groove of the fixing component assembly matched with the limiting rib in the shell is U-shaped; the limiting groove of the fixing component assembly matched with the limiting boss in the shell is rectangular.

[0018] As a further improvement, there are at least three limiting ribs, and the three limiting ribs are arranged in a triangular shape so as to limit the middle part of the fixing component assembly;

[0019] There are at least four limiting bosses, and the four limiting bosses are arranged in a trapezoidal shape so as to limit the outer side of the fixing component assembly.

[0020] As a further improvement, the limiting ribs are arranged parallel to the displacement direction of the fixing assembly on the shell, and one of the limiting ribs is located between the two power terminals; one of the limiting bosses is connected to the limiting rib located between the two power terminals, and is located in the direction before the displacement of the fixing assembly.

[0021] As a further improvement, the fixing member is formed with a plurality of silicone bearing surfaces that match the thermally conductive silicone to ensure that the thermally conductive silicone is embedded in the fixing member;

[0022] The heat-conducting silica gel and the fixing piece are plugged in through a cylindrical and circular hole structure, or a cylindrical structure and a circular hole.

[0023] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0024] (1) The utility model changes the design of the fixing components to simplify the assembly process. The wiring harness can be installed after the charging socket is assembled, reducing the number of operations related to the pre-installation of the fixing accessories of the wiring harness;

[0025] (2) The utility model limits the axial displacement of the power terminal by displacing the fixing component assembly, thereby ensuring the installation position of the power terminal.

[0026] (3) The utility model transmits temperature change information through the contact point of the water droplet thermistor in the thermally conductive silicone rubber, thereby realizing temperature monitoring of the power terminal and making the detection more accurate.

[0027] (4) The utility model can also increase the number of times the fixing part and the thermally conductive silicone are engaged by improving the structure of the thermally conductive silicone and the fixing part, thereby increasing the matching force; and increase the creepage distance between the power terminal and the signal terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an assembly diagram of the thermal conductive silicone and the fixing piece in Example 1 to form a fixing piece assembly;

[0029] Figure 2 is an exploded schematic diagram of the fixing component assembly in Example 1;

[0030] Figure 3 This is a schematic diagram of the installation of the fixing component and the PCBA board in Example 1;

[0031] Figure 4 It is a schematic diagram of the installation of the fixing component assembly and the housing in Example 1;

[0032] Figure 5 Schematic diagram of the fixing component and the housing power terminal before and after installation displacement in Example 1;

[0033] Figure 6 It is a schematic diagram of the arrangement of the limiting ribs and limiting bosses of the housing in Example 1;

[0034] Figure 7 It is a schematic diagram of the arrangement of the limiting grooves of the fixing component assembly in Example 1;

[0035] Figure 8 It is a schematic diagram of the chamfer structure of the fixing member assembly and the arrangement of the fixing member inclined surface in Example 1;

[0036] Fig. 9 is a schematic diagram of the structure of the power terminal in Example 1;

[0037] Fig.10 This is a schematic diagram of the overall installation of the charging socket in Example 1;

[0038] Fig.11 This is a schematic diagram of the limiting position of the power terminal and the fixing member in Example 1;

[0039] Fig.12 It is an assembly diagram of the thermal conductive silicone and the fixing piece in Example 2 to form a fixing piece assembly;

[0040] Fig.13 is an exploded schematic diagram of the fixing component assembly in Example 2;

[0041] Fig.14 Schematic diagram of the fixing component and the housing power terminal before and after installation displacement in Example 2;

[0042] Fig.15 It is a schematic diagram of the installation of the fixing component assembly and the housing in Example 2;

[0043] Fig.16 Schematic diagram of the fixing component and the housing power terminal before and after installation displacement in Example 2;

[0044] Fig.17 It is a schematic diagram of the arrangement of the limiting ribs and limiting bosses of the housing in Example 2;

[0045] Fig.18 It is a schematic diagram of the arrangement of the limiting grooves of the fixing component assembly in Example 2;

[0046] Fig.19 It is a schematic diagram of the chamfer structure of the fixing member assembly and the arrangement of the fixing member inclined surface in Example 2;

[0047] Fig. 20 This is a schematic diagram of the overall installation of the charging socket in Example 2.

[0048] Reference numerals:

[0049] 1. Fixing piece; 11. Signal terminal installation position; 12. Silicone matching position; 13. Power terminal installation position; 14. PE terminal installation position; 15. Chamfered structure; 16. Fixing piece inclined surface; 17. Local protrusion of fixing piece; 18. Silicone bearing surface; aa, first U-shaped limiting groove; bb, second U-shaped limiting groove; cc, third U-shaped limiting groove; dd, first rectangular limiting groove; ee, second rectangular limiting groove; ff, third rectangular limiting groove; gg, fourth rectangular limiting groove; hh, fifth rectangular limiting groove; 2. Thermal conductive silicone; 21. Sensor installation position; 22. Fixing part matching position; 23. Terminal contact arc surface; 24. Silicone thickened part; 3. Shell; a. First limiting rib; b. Second limiting rib; c. Third limiting rib; d. First limiting boss; e. Second limiting boss; f. Third limiting boss; g. Fourth limiting boss; h. Fifth limiting boss; 4. Power terminal; 4-a. First circumferential groove; 4-b. Second circumferential groove; 4-c. Third circumferential groove; 4-e. Concave surface; 5. Shell tail cover; 6. Cable; 7. PE terminal; 8. PCBA board; 9. Water drop type thermistor. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] The utility model discloses a charging socket with a limiting structure, comprising: a fixing component assembly assembled by fixing components and thermal conductive silicone, a power terminal, a PCBA board, a shell tail cover, a shell and a cable. Before the fixing component assembly is installed and displaced, there is a certain distance between the fixing component assembly and the shell and the power terminal installation position to ensure the requirement of the wiring harness rear installation;

[0052] Among them, a number of limiting ribs and a number of limiting bosses are formed in the shell, and a number of limiting grooves corresponding to the limiting ribs and limiting bosses in the shell are formed in the fixing component assembly. The limiting ribs in the shell cooperate with the limiting grooves of the fixing component assembly to perform planar limiting on the process of moving and installing the fixing component assembly in the shell; the limiting bosses in the shell cooperate with the limiting grooves of the fixing component assembly to perform axial limiting on the process of moving and installing the fixing component assembly in the shell; the fixing component assembly is displaced to cover the existing distance, so that the fixing component assembly is abutted against the shell and the power terminal, and the charging socket is installed through the limiting structure, thereby ensuring the safety and reliability of the fixing components, power terminals and other components in the shell.

[0053] The power terminal is arranged through the fixing component and is against the thermal conductive silicone;

[0054] A PCBA board is arranged on one side of the fixing component away from the housing, and a water drop type thermistor on the PCBA board penetrates the fixing component and is arranged in the thermal conductive silicone, so as to transmit temperature change information through the contact point of the water drop type thermistor in the thermal conductive silicone, thereby realizing temperature monitoring of the power terminal;

[0055] The cable passes through a shell tail cover that covers one end of the shell and is connected to a power terminal in the shell, so that the cable can be installed later and the installation is convenient.

[0056] Embodiment 1:

[0057] Combined with Figure 1-11 As shown, a charging socket with a limiting structure comprises a fixing part 1, a thermal conductive silicone 2, a housing 3, a power terminal 4, a housing tail cover 5, a cable 6, a PE terminal 7 and other components, wherein:

[0058] The thermally conductive silicone 2 is formed with a plurality of fixing member matching positions 22 for plugging with the fixing member, a sensor mounting position 21 for mounting the temperature sensor, and a terminal contact arc surface 23 for contacting with the power terminal;

[0059] The fixing part 1 is formed with a plurality of silicone mating positions 12 for plugging with the thermal conductive silicone, a signal terminal installation position 11 for installing the signal terminal, a power terminal installation position 13 for installing the power terminal, and a PE terminal installation position 14 for installing the PE terminal; it is assembled with the thermal conductive silicone to form a fixing component and installed on the housing, and attention should be paid to the installation direction and installation point. The fixing component assembled with the entire thermal conductive silicone and the fixing component does not affect the installation of other components of the charging socket and the fixing component;

[0060] The power terminal 4 is arranged at the power terminal installation position 13 inside the fixing member, is located at the lower part of the thermal conductive silicone and contacts with the terminal contact arc surface of the thermal conductive silicone;

[0061] The PE terminal 7 is disposed at the PE terminal installation position 14 of the fixing member 1 and is installed in the housing 3 together with the fixing member assembly.

[0062] The thermal conductive silicone of the charging socket avoids the through-hole structure settings of the signal terminal mounting position 11, the power terminal mounting position 13, and the PE terminal mounting position 14 of the fixing part, so that the signal terminal can pass through the component assembled by the fixing part and the thermal conductive silicone; the lower side of the thermal conductive silicone is also formed with a terminal contact arc surface that contacts the power terminal 6, so that the contact area between the thermal conductive silicone and the power terminal 6 can be increased through the terminal contact arc surface, thereby improving the monitoring accuracy.

[0063] Specifically, in this embodiment, the fixing component assembly is suitable for a DC charging socket;

[0064] Among them: The structural design of thermal conductive silicone 2:

[0065] The sensor installation position 21 is a reserved position for the temperature sensor, which ensures subsequent temperature monitoring through heat conduction and that the temperature sensor is not damaged before and after the fixing part is moved.

[0066] A plurality of circular holes are used as the fixing part matching position 22 of the thermal conductive silicone rubber; they cooperate with the cylindrical structure on the fixing part as the silicone rubber matching position 12 to ensure that the thermal conductive silicone rubber position cannot move upward around the fixing part;

[0067] The terminal contact arc surface 23 increases the contact area with the power terminal. In this embodiment, the lower side of the thermal conductive silicone is formed with the terminal contact arc surface which is open downwards;

[0068] Optionally, the thermally conductive silicone 2 is further provided with:

[0069] The silicone thickened portion 24 is located at the rear end of the thermally conductive silicone and is integrally formed with the thermally conductive silicone body, and the sensor mounting position 21 is set through the thermally conductive silicone body and the silicone thickened portion; in order to increase the thickness of the thermally conductive silicone, it is repeatedly embedded to increase the matching force between the fixing part and ensure that the position of the thermally conductive silicone cannot move on the fixing part.

[0070] Structural design of fixing part 1:

[0071] The silicone matching position 12 matches with a plurality of circular holes on the thermally conductive silicone as the matching positions of the fixing part, so as to ensure that the thermally conductive silicone cannot move upward around the fixing part;

[0072] The signal terminal mounting position 11 and the reserved PCBA board 8 mounting position are matched with the signal terminal on the PCBA board;

[0073] The power terminal installation position 13 is an open slot, which is a reserved PE terminal installation position;

[0074] In this embodiment, the thermal conductive silicone is plugged into the plurality of silicone mating positions 12 of the fixing part through a plurality of fixing part mating positions 22 to achieve the installation relationship between the fixing part and the thermal conductive silicone. Of course, the installation method can also be other methods, not limited to this form, and it is only necessary to ensure that the position of the thermal conductive silicone cannot move circumferentially on the fixing part after completion.

[0075] Preferably, in this embodiment, there are two thermally conductive silicone rubbers, which are symmetrically embedded in the fixing member.

[0076] Install the fixture assembly composed of the thermally conductive silicone and the fixture, and ensure that the power terminal is inserted before the fixture assembly is displaced to ensure that the power terminal and the terminal sealing ring will not interfere with the thermally conductive silicone. It can also ensure that the thermally conductive silicone and the power terminal can form an interference fit through the displacement of the fixture.

[0077] The fixing component assembled by the thermal conductive silicone and the fixing component is installed on the PCBA board 8, and the temperature change information is transmitted through the contact point between the thermal conductive silicone and the water drop type thermistor 9 on the PCBA board, and the thermistor will not be affected before and after the fixing component moves. This effect is achieved by setting the sensor installation position as a waist hole in which the water drop type thermistor can move up and down, and the waist hole is located in the area enclosed by the circular hole as the fixing component matching position, that is, between the circular holes.

[0078] As a further preferred design, when the power terminal is fixed through the fixing assembly assembled from the fixing part and the thermal conductive silicone, the terminal contact arc surface of the thermal conductive silicone has an interference fit with the power terminal. Preferably, the interference fit is located on the left and right outer sides of the two power terminals.

[0079] Before the fixing assembly is installed, there is a certain distance between the housing 3 and the power terminal 4 to ensure the needs of the wiring harness after installation. At the same time, the shape of the moving process hole is not limited, as long as the fixing assembly is moved into place. The fixing assembly moves downward, and the fixing 1 is positioned and installed through the coordination of the structure of the fixing 1 and the housing 3.

[0080] Specifically, in this embodiment, the internal structure of the DC housing is designed as follows:

[0081] A plurality of vertical limiting ribs are arranged in the DC housing, including a first limiting rib a, a second limiting rib b, a third limiting rib c, etc., wherein the first limiting rib a and the second limiting rib b are parallel to each other and are located on the upper part of the signal terminal, and the third limiting rib c is parallel to the first limiting rib a and the second limiting rib b and is located between the two power terminals, that is, the first limiting rib a, the second limiting rib b, and the third limiting rib c are arranged in a triangle so as to limit the middle part of the fixing component.

[0082] A number of limiting bosses are provided, including a first limiting boss d, a second limiting boss e, a third limiting boss f, a fourth limiting boss g, a fifth limiting boss h, etc., wherein the first limiting boss d and the second limiting boss e are relatively arranged on the left and right sides of the shell, the third limiting boss f and the fourth limiting boss g are symmetrically arranged on the lower side of the shell, the fifth limiting boss h is arranged at the upper end of the third limiting rib c and is connected to the third limiting rib c, and is located in the direction before the displacement of the fixing component; the outer side of the fixing component is limited by the limiting boss.

[0083] Internal structure design of the fixing assembly:

[0084] The fixing component is formed with a U-shaped limiting groove that cooperates with the limiting ribs set on the DC shell, and a rectangular limiting groove that cooperates with the limiting boss set on the DC shell, realizing a one-to-one corresponding design. The limiting ribs and the U-shaped limiting groove cooperate to ensure the planar limitation of the fixing component during the movement; the limiting boss and the rectangular limiting groove cooperate to ensure the axial limitation of the fixing component during the movement.

[0085] Among them, the U-shaped groove includes a first U-shaped limiting groove aa, a second U-shaped limiting groove bb, and a third U-shaped limiting groove cc corresponding to the first limiting rib a, the second limiting rib b, and the third limiting rib c respectively; the rectangular limiting groove includes a first rectangular limiting groove dd, a second rectangular limiting groove ee, a third rectangular limiting groove ff, a fourth rectangular limiting groove gg and a fifth rectangular limiting groove hh corresponding to the first limiting boss d, the second limiting boss e, the third limiting boss f, the fourth limiting boss g, and the fifth limiting boss h respectively, wherein the third rectangular limiting groove, the fourth rectangular limiting groove and the fifth rectangular limiting groove are arranged on the fixing part and are formed by the fixing part alone, and the first rectangular limiting groove and the second rectangular limiting groove are formed by the fixing part and the outer side of the thermal conductive silicone.

[0086] Optionally, the power terminal insertion port of the fixing is set as a chamfered structure 15, which facilitates the fixing to be pushed to a specified position during movement; the PE terminal insertion port of the fixing is provided with a fixing inclined surface 16 or chamfered outward to facilitate the fixing to be pushed into the limit point during displacement. A local fixing protrusion 17 can also be added between the power terminals on the rear side of the fixing to increase the local height of the fixing between the power terminals and increase the creepage distance between the power terminals and the signal terminals.

[0087] Specifically, in this embodiment, the power terminal 4 simplifies the assembly process by changing the power terminal design, and the wiring harness can be installed after the charging socket is assembled, reducing the related operations of the wiring harness pre-installed fixing accessories. The terminal welding end of the power terminal 4 is connected to the cable 6, and the cable passes through the shell tail cover 5 and contacts the terminal welding end of the power terminal.

[0088] A first circumferential groove 4-a is added to the front end of the power terminal, a second circumferential groove 4-b is added to the middle part, and a third circumferential groove 4-c and a concave surface 4-e are added to the tail end, wherein the first circumferential groove 4-a is used to be fixed with the snap-on limit of the shell, so that the shell is sleeved outside the power terminal to prevent the power terminal from retreating from the shell; the second circumferential groove 4-b is used to set the terminal sealing ring, so as to seal the middle part of the power terminal and the shell to meet the protection requirements; the third circumferential groove 4-c is used as a limiting structure for the fixing part and the power terminal, and the concave surface 4-e is formed along the lower side of the terminal welding end and is connected with the third circumferential groove 4-c, which is used to limit and prevent the terminal welding end and the fixing part from rotating.

[0089] During installation, the terminal sealing ring is sleeved in the second circumferential groove 4-b of the power terminal, and then the DC housing 3 is sleeved outside the power terminal, and the DC housing snaps and the first circumferential groove of the power terminal are snapped and limited, so that the terminal sealing ring set in the second circumferential groove 4-b and the DC housing have interference fit to meet the protection level requirements; the fixing part 4 is sleeved on the rear end of the power terminal, and is snapped and limited with the third circumferential groove 4-c of the power terminal, and the concave surface 4-e is used to realize the anti-rotation and limit of the fixing part and the power terminal, and the power terminal is pressed tightly into the housing by the fixing part to prevent the power terminal from retreating and rotating; then, the back cover is closed on the DC housing, and the cable 6 can pass through the back cover and contact the terminal welding end of the power terminal inside it to realize the installation of the charging socket. The circumferential groove and the DC housing snap limit are added to simplify the assembly process, and the cable can be installed after the charging socket is assembled, reducing the related operations of the pre-installed fixing parts of the wiring harness. The power terminal is clipped and limited with the fixing part, and the power terminal is provided with a terminal sealing ring to meet the protection requirements.

[0090] Example 2

[0091] For details, please refer to the attached Figure 12-20 In this embodiment, the fixing component is suitable for an AC charging socket; the difference from Embodiment 1 is that:

[0092] Structural design of thermal conductive silicone:

[0093] The sensor installation position 21 is a reserved position for the temperature sensor, which ensures subsequent temperature monitoring through heat conduction. In this embodiment, the sensor installation position 21 is a concave hole and is open upward.

[0094] A plurality of cylinders, as the fixing fitting position 22 of the thermal conductive silicone, cooperate with the circular hole structure on the fixing member as the silicone fitting position 12, to ensure that the thermal conductive silicone cannot move upward around the fixing member;

[0095] The terminal contact arc surface 23 increases the contact area with the power terminal. In this embodiment, the upper side of the thermal conductive silicone is formed with the terminal contact arc surface which is open upwards;

[0096] The thickened silicone portion 24 is located at the rear end of the thermally conductive silicone and is integrally formed with the thermally conductive silicone body, and the sensor mounting position 21 is set at the sensor mounting position of the thickened silicone portion; the thickness of the thermally conductive silicone can be increased, and multiple interlocking settings can be made to increase the matching force between the thermally conductive silicone and the fixing part to ensure that the position of the thermally conductive silicone cannot move on the fixing part.

[0097] Refer to the attached Fig.13 , structural design of fixing part 1:

[0098] The silicone matching position 12 matches with a plurality of cylinders on the thermally conductive silicone as the fixing matching positions 22, so as to ensure that the thermally conductive silicone cannot move upward around the fixing;

[0099] A plurality of silicone bearing surfaces 18 matched with the thermally conductive silicone are provided to ensure that the thermally conductive silicone cannot move on the fixing member.

[0100] Signal terminal installation position 11, reserved L2 / L3 signal terminal installation position;

[0101] The power terminal installation position 13 is an open slot, which is a reserved PE terminal installation position;

[0102] In this embodiment, the thermal conductive silicone is connected with a plurality of circular hole structures as the silicone matching positions 12 of the fixing part through a plurality of cylinders as the fixing part matching positions 22, so as to realize the installation relationship between the fixing part and the thermal conductive silicone. Of course, the installation method can also be other methods, not limited to this form, and it is only necessary to ensure that the position of the thermal conductive silicone cannot move circumferentially on the fixing part after completion.

[0103] Preferably, in the present embodiment, there are two thermally conductive silicone rubbers which are symmetrically embedded in the fixing piece on the left and right sides; the thermally conductive silicone rubber avoids the through-hole structure of the fixing piece so that the L2 / L3 signal terminal can pass through the component assembled by the fixing piece and the thermally conductive silicone rubber; a terminal contact arc surface which contacts the power terminal is also formed on the inner side of the thermally conductive silicone rubber, so that the contact area between the thermally conductive silicone rubber and the power terminal can be increased through the terminal contact arc surface, thereby improving the monitoring accuracy.

[0104] Install the components assembled with thermal conductive silicone and fixings, and ensure that the power terminals are inserted before the components are moved, so as to ensure that the power terminals and terminal sealing rings will not interfere with the thermal conductive silicone. It can also ensure that the thermal conductive silicone and the power terminals can form an interference fit through the displacement of the fixings.

[0105] The assembly composed of the thermally conductive silicone and the fixings is installed on the PCBA board 4, and the temperature change information is transmitted through the contact points between the thermally conductive silicone and the water drop type thermistor 5 on the PCBA board. The fixings will not affect the thermistor before and after movement. This effect is achieved by setting the sensor installation position as an upper opening in which the water drop type thermistor can move up and down.

[0106] As a further preferred design, when the power terminal is fixed through the assembly composed of the fixing piece and the thermal conductive silicone, the terminal contact arc surface of the thermal conductive silicone has an interference fit with the power terminal. Preferably, the interference fit is located on the left and right inner sides of the two power terminals.

[0107] In this embodiment, specifically, the internal structure design of the AC housing is as follows:

[0108] A number of limiting ribs are arranged in the AC housing, including a first limiting rib a, a second limiting rib b, a third limiting rib c, etc., wherein the first limiting rib a and the second limiting rib b are parallel to each other and located in the middle of the housing, the third limiting rib c is located between the two power terminals and is also located in the middle of the housing, and the third limiting rib c is columnar;

[0109] A plurality of limiting bosses are arranged in the AC housing, including a first limiting boss d, a second limiting boss e, a third limiting boss f and a fourth limiting boss g, etc., which are symmetrically arranged on the left and right sides of the lower middle of the housing.

[0110] Internal structure design of the fixing assembly:

[0111] The fixing component is formed with a U-shaped limiting groove matched with the limiting rib provided on the AC housing, and a rectangular limiting groove matched with the limiting boss provided on the AC housing, realizing a one-to-one corresponding design. The limiting rib and the U-shaped limiting groove cooperate to ensure the plane limitation of the fixing component during the movement; the limiting boss and the rectangular limiting groove cooperate to ensure the axial limitation of the fixing component during the movement.

[0112] Among them, the U-shaped groove includes a first U-shaped limiting groove aa, a second U-shaped limiting groove bb, and a third U-shaped limiting groove cc corresponding to the first limiting rib a, the second limiting rib b, and the third limiting rib c respectively; the rectangular limiting groove includes a first rectangular limiting groove dd, a second rectangular limiting groove ee, a third rectangular limiting groove ff, and a fourth rectangular limiting groove gg corresponding to the first limiting boss, the second limiting boss, the third limiting boss, and the fourth limiting boss respectively, wherein the first rectangular limiting groove, the second rectangular limiting groove, the third rectangular limiting groove, and the fourth rectangular limiting groove are all composed of the structure on the outside of the fixing part, the third rectangular limiting groove and the fourth rectangular limiting groove are composed of the fixing part inclined surface on the outside of the fixing part; the first rectangular limiting groove and the second rectangular limiting groove are composed of the fixing part outer boss on the outside of the fixing part.

[0113] Optionally, the power terminal insertion port of the fixing is provided with a chamfered structure 15 to facilitate pushing the fixing to a specified position during movement; the PE terminal insertion port of the fixing is additionally provided with a fixing inclined surface 16 or a chamfer toward the outside to facilitate pushing the fixing into a limit point during displacement.

[0114] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A charging socket with a limiting structure, characterized in that: include: The fixing component, power terminal, PCBA board, housing tail cover, housing and cable are assembled by fixing components and thermal conductive silicone. Before the fixing component is installed, there is a certain distance between it and the housing and power terminal installation to ensure the requirements of the wiring harness after installation; Among them, a plurality of limiting ribs and a plurality of limiting bosses are formed in the shell, and a plurality of limiting grooves corresponding to the limiting ribs and the limiting bosses in the shell are formed in the fixing component assembly. The limiting ribs in the shell cooperate with the limiting grooves of the fixing component assembly to perform planar limiting during the process of moving and installing the fixing component assembly in the shell; the limiting bosses in the shell cooperate with the limiting grooves of the fixing component assembly to perform axial limiting during the process of moving and installing the fixing component assembly in the shell; The power terminal is arranged through the fixing component and is against the thermal conductive silicone; A PCBA board is arranged on one side of the fixing component away from the housing, and a water drop type thermistor on the PCBA board penetrates the fixing component and is arranged in the thermal conductive silicone, so as to transmit temperature change information through the contact point of the water drop type thermistor in the thermal conductive silicone, thereby realizing temperature monitoring of the power terminal; The cable passes through a shell tail cover that covers one end of the shell and is connected to a power terminal in the shell to realize rear installation of the cable.

2. A charging socket with a limiting structure according to claim 1, characterized in that: The power terminal is provided with a first circumferential groove, a second circumferential groove, a third circumferential groove and a concave surface, wherein the first circumferential groove is used for fixing with the snap-on limit of the shell to prevent the power terminal from retreating from the shell; the second circumferential groove is used for setting a terminal sealing ring to seal the power terminal and the shell; the third circumferential groove serves as a limiting structure for the fixing part and the power terminal; and the concave surface is formed along the lower side of the terminal welding end and is connected with the third circumferential groove, which is used to limit and prevent the terminal welding end and the fixing part from rotating.

3. The charging socket with a limiting structure according to claim 1, characterized in that: The thermally conductive silica gel is formed with a plurality of fixing parts matching positions, a sensor installation position for installing a temperature sensor, and a terminal contact arc surface for contacting the power terminal; The fixing component is formed with a plurality of silicone matching positions plugged into the thermally conductive silicone, a signal terminal mounting position for mounting the signal terminal, a power terminal mounting position for mounting the power terminal, and a PE terminal mounting position for mounting the PE terminal; the thermally conductive silicone is embedded in the fixing component and avoids the signal terminal mounting position, the power terminal mounting position, and the PE terminal mounting position, so that the thermally conductive silicone does not affect the installation of the charging socket component on the fixing component.

4. The charging socket with a limiting structure according to claim 3, characterized in that: The thermally conductive silicone also comprises a thermally conductive silicone body and a silicone thickened portion, and the sensor mounting position is arranged through the thermally conductive silicone body and the silicone thickened portion, and the number of times the fixing part and the thermally conductive silicone are engaged is increased through the silicone thickened portion, thereby increasing the matching force.

5. The charging socket with a limiting structure according to claim 3, characterized in that: The thermally conductive silica gel is in two pieces, which are symmetrically embedded in the fixing member and have an interference fit with the power terminal.

6. The charging socket with a limiting structure according to claim 3, characterized in that: The power terminal mounting position is provided with a chamfered structure to facilitate pushing the power into place during the displacement of the fixing; the PE terminal mounting position is provided with a fixing bevel or chamfer to facilitate pushing the fixing into the limit point during the displacement; a local protrusion of the fixing is added between the rear side of the fixing and the power terminal to increase the creepage distance between the power terminal and the signal terminal.

7. The charging socket with a limiting structure according to claim 1, characterized in that: The limiting groove of the fixing component assembly matched with the limiting rib in the shell is U-shaped; the limiting groove of the fixing component assembly matched with the limiting boss in the shell is rectangular.

8. The charging socket with a limiting structure according to claim 1, characterized in that: There are at least three limiting ribs, and the three limiting ribs are arranged in a triangle shape so as to limit the middle part of the fixing component assembly; There are at least four limiting bosses, and the four limiting bosses are arranged in a trapezoidal shape so as to limit the outer side of the fixing component assembly.

9. The charging socket with a limiting structure according to claim 8, characterized in that: The limiting ribs are arranged parallel to the displacement direction of the fixing assembly on the shell, and one of the limiting ribs is located between the two power terminals; one of the limiting bosses is connected to the limiting rib located between the two power terminals and is located in the direction before the fixing assembly is displaced.

10. The charging socket with a limiting structure according to claim 1, characterized in that: The fixing member is provided with a plurality of silicone bearing surfaces that match the thermally conductive silicone to ensure that the thermally conductive silicone is embedded in the fixing member; The heat-conducting silica gel and the fixing piece are plugged in through a cylindrical and circular hole structure, or a cylindrical structure and a circular hole.

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