Connector with rear-mounted TPA assembly and assembling method thereof

Abstract

The invention discloses a connector with a rear-mounted TPA assembly and an assembling method thereof, the connector comprises a connector body, a TPA assembly and a terminal, and the TPA assembly is implanted into an inner cavity in the direction from the tail end to the head end of the connector body so as to effectively simplify the difficulty of assembling and disassembling operation between the TPA assembly and the connector body. The invention further discloses an assembling method of the connector with the rear-mounted TPA assembly, which is used for reducing and further reducing the mounting and dismounting difficulty of the TPA assembly, reducing the dependence of assembling the connector on an auxiliary mounting tool, improving the assembling accuracy of the connector and reducing the loss caused by improper assembling.

Description

Technical Field

[0001] The present invention relates to a connector, and in particular to a connector with a rear-mounted TPA component and an assembling method thereof. Background Art

[0002] For shell sealed connectors, the front TPA structure is currently commonly used on the market to achieve the terminal position assurance function. The so-called front TPA structure means that relative to one end of the terminal plugged into the TPA structure (connector body), the TPA structure is pre-installed into the connector housing from the other end of the connector body (the external end of the connector), or plugged and installed into the connector housing from the other end of the connector body, so as to cooperate with the terminal in the connector to lock the TPA installation method.

[0003] However, in connectors that use front-mounted TPA components, in order to improve the waterproof performance of the connector, the front end of the connector is usually set relatively high, and the high height of the connector head (the external end of the connector) makes the installation of the TPA difficult, so that the position movement and installation of the TPA require the use of auxiliary tools, and the operation is relatively complicated. Summary of the invention

[0004] The present invention provides a connector with a rear-mounted TPA component. The TPA component is plugged into the connector body from the same end as the terminal in a rear-mounted plug-in installation manner with the help of a snap-on structure, so that the TPA component can be stably snapped into the connector body and can be disassembled and replaced at any time, thereby simplifying the installation operation of the TPA component and solving at least one of the above-mentioned technical problems.

[0005] The present invention also provides an assembly method for a connector with a post-mounted TPA component. During the implantation and installation of the TPA component, the TPA component is first limited by a first limiting component and then by a second limiting component, so that the TPA component is finally locked and installed in the inner cavity. While ensuring the installation and fixing effect of the TPA component, the difficulty of post-mounted installation of the TPA component is reduced, and it is also used to solve some of the above-mentioned technical problems.

[0006] The technical solution of the present invention to solve the above-mentioned problem is: to provide a connector with a rear-mounted TPA component, the connector comprising a connector body, a TPA component, and a terminal, the rear end of the connector body having an inner cavity for implanting the TPA component, the inner cavity having an implantation opening, the bottom of the TPA component being provided with an interface for terminal connection, the TPA component being implanted into the inner cavity along a direction from the rear end to the head end of the connector body; a first limiting component being provided between the TPA component and the connector body, the first limiting component being used to limit the TPA component from exiting the inner cavity; a second limiting component being further provided between the TPA component and the connector body, the second limiting component being used to limit the movement of the TPA component in the inner cavity.

[0007] Furthermore, an elastic limiting arm is provided in the inner cavity of the connector body, and the limiting arm is inclined toward the center direction of the inner cavity. The limiting arm is also extended toward the implant opening direction, and the first limiting component and the second limiting component are both arranged between the limiting arm and the TPA component.

[0008] Furthermore, taking the implantation and installation direction of the TPA component as a first direction, and the second direction being opposite to the first direction, the first limiting component includes a first limiting member and a first blocking member, the first limiting member is arranged on the outside of the TPA component, and the first blocking member is arranged in the inner cavity, and the first limiting member and the first blocking member block and limit each other to restrict the TPA component from exiting the inner cavity along the second direction.

[0009] Furthermore, the second limiting component includes a second limiting piece and a second limiting groove, the second limiting piece is arranged on the outside of the TPA component, and the second limiting groove is opened in the inner cavity, and the second limiting piece and the second limiting groove cooperate with each other to limit the TPA component from other directions different from the first direction and / or the second direction, thereby limiting the movement of the TPA component in the inner cavity.

[0010] Furthermore, the second limiting member and the second limiting groove cooperate with each other to limit the direction of the TPA component to a third direction, and the third direction is perpendicular to the first direction. The second limiting member is also inclined toward the third direction, and the second limiting groove is inclined in the opposite direction of the third direction.

[0011] Furthermore, a locking position is provided in the inner cavity, and a positioning locking assembly is also provided between the TPA assembly and the connector body. The positioning locking assembly includes positioning locking end faces which are arranged relatively to each other and are respectively located on the TPA assembly and in the inner cavity. When the second limiting member is inserted into the second limiting groove, the two positioning locking end faces just contact to abut against each other for limiting, and then cooperate with the second limiting assembly to fix the TPA assembly at the locking position, so as to facilitate the connection between the terminal and the TPA assembly.

[0012] Further, along the first direction or the second direction, the first limiting member and the second limiting member are arranged adjacent to each other, and the second limiting groove is also provided on the first blocking member.

[0013] Furthermore, a pre-installation position is provided in the inner cavity, and an abutment positioning component is provided between the TPA component and the connector body. The abutment positioning component includes abutment positioning end faces that are relatively arranged and respectively located on the TPA component and in the inner cavity. The two abutment positioning end faces are positioned by contacting and sliding with each other to facilitate the TPA component to be implanted in the pre-installation position.

[0014] Furthermore, a third limiting assembly is provided between the TPA assembly and the connector body, and the third limiting assembly includes a third limiting end face arranged at the bottom of the inner cavity and a third abutting protrusion arranged on the TPA assembly, and the third abutting protrusion is limited by abutting against the third limiting end face to control the implantation depth of the TPA assembly.

[0015] Furthermore, at least one fourth positioning protrusion is provided on the TPA component, and a structural rib for forming a connection port for connecting the terminal is also provided in the inner cavity, and the fourth positioning protrusion cooperates with the structural rib to guide the positioning of the TPA component.

[0016] The present invention also provides an assembly method of a connector having a rear-mounted TPA assembly, the assembly method comprising the following steps: Step S1, pushing the TPA component into the inner cavity along the direction from the rear end to the head end of the connector body until the TPA component is limited by the first limiting component; Step S2, pushing the TPA assembly to move in the area between the bottom end of the inner cavity and the first limiting assembly along a direction perpendicular to the direction from the tail end to the head end of the connector body, until the TPA assembly is limited by the second limiting assembly to complete the assembly.

[0017] Furthermore, in step S1, a guiding structure is provided on the cavity wall of the inner cavity to guide the TPA component to be pushed to a position where it is limited by the first limiting component; in step S2, the first limiting component and the bottom end of the inner cavity cooperate to guide the TPA component to be pushed to a position where it is limited by the second limiting component.

[0018] Beneficial effects of the present invention: 1. The first limiting component and the second limiting component cooperate with each other to clamp and limit the TPA component from multiple directions to ensure that the TPA component can be stably locked in the inner cavity to ensure that the connector can work normally.

[0019] 2. The first limit assembly and the second limit assembly are both arranged on the limit arm. By moving the limit arm, the first limit assembly and the second limit assembly can be unlocked at the same time to disassemble the TPA assembly, thereby realizing easy disassembly operation.

[0020] 3. A pre-installed position and a locking position are provided in the inner cavity. The technician can first position and install the TPA component to the pre-installed position by abutting the positioning component, and then push the TPA component in the direction opposite to the third direction to push the TPA component to the locking position, so as to achieve the purpose of accurately locking and installing the TPA component into the inner cavity of the connector body, so as to facilitate terminal connection and improve the quality of connector series connection.

[0021] 4. The present invention abandons the scheme of setting the TPA component in front of the male end of the sealed housing connector, and overcomes the problems caused by the use of the front-mounted TPA component: the TPA component is installed in a deep position, it is difficult to apply force, and auxiliary tools are required to complete assembly and disassembly. Correspondingly, the rear-mounted TPA component scheme of the present invention is a new structural design, and under the premise of ensuring the sealing of the housing, the area where the TPA can apply force is increased, making the TPA assembly and disassembly process more convenient, improving efficiency, and reducing the cost of assembly and disassembly operations.

[0022] 5. The assembly method of the present invention does not seek to reduce the volume of the entire connector, but from the dual perspectives of how to facilitate the post-installation of the TPA component and ensure that the TPA component can be stably locked in the inner cavity, so as to appropriately expand the space size of the tail end of the inner cavity, so that the force application space of the TPA component from separation to pre-installation, pre-installation to locking, locking to pre-installation, and pre-installation to separation is sufficient, making the assembly and disassembly of the TPA more convenient, reducing the dependence on auxiliary installation tools, increasing the speed of connector assembly, and reducing the probability of installation errors such as improper installation of the TPA component and incorrect installation, thereby improving the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of the steps of the connector assembly method of this embodiment; Figure 2 An exploded view of the overall structure of the connector of this embodiment; Figure 3 is a structural diagram of the connector body of this embodiment; Figure 4 is one of the structural diagrams of the TPA component of this embodiment; Figure 5 This is the second structural diagram of the TPA component of this embodiment; Figure 6 It is a cross-sectional view of the structure principle when the TPA component of this embodiment is limited by the first limiting component; Figure 7 It is a cross-sectional view of the structure principle of the TPA assembly of this embodiment being pushed from the pre-installed position to the locked position; Figure 8 for Figure 3 A structural diagram of the connector body after it is rotated 180° around the first direction; 1-connector body, 11-inner cavity, 12-implantation opening, 13-limiting arm, 14-first blocking member, 15-second limiting groove, 16-third limiting end face; 2-TPA assembly, 21-interface, 22-first stopper, 23-second stopper, 24-third abutting protrusion, 25-fourth positioning protrusion, 26-positioning bump; 3-terminal, 4-positioning locking end face, 5-abutting positioning end face. DETAILED DESCRIPTION

[0025] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0026] See also Figure 2 ,by Figure 2Taking the direction shown as an example, a connector with a rear-mounted TPA component according to a specific embodiment of the present invention mainly includes a connector body 1, a TPA component 2, and a terminal 3. The left end of the connector body 1 is an external terminal, and the right end of the connector body 1 is provided with an inner cavity 11. The inner cavity 11 is only formed with an elliptical implantation opening 12 toward the right end of the connector body 1. The inner cavity 11 extends toward the inner left end of the connector body 1. The TPA component 2 can be plugged into the inner cavity 11. When the TPA component 2 is plugged into the inner cavity 11, the interface 21 at the bottom of the TPA component 2 is exposed at the implantation opening 12 of the inner cavity 11 for the terminal 3 to be plugged in. The three thus form a complete connector.

[0027] See also Figure 3 and Figure 4 ,by Figure 3 Taking the direction shown as an example, in some embodiments, the implantation and installation direction of the TPA component 2 is taken as the first direction, and with reference to the first direction, the direction opposite to the first direction is taken as the second direction, and the vertically upward direction is taken as the third direction. A limit arm 13 is respectively provided on the left and right sides of the inner cavity 11 of the connector body 1, and the two limit arms 13 are both inclined toward the center direction of the inner cavity 11. The two limit arms 13 are also arranged opposite to each other, and the structures of the two limit arms 13 are the same; a first limit assembly and a second limit assembly are also provided between the limit arm 13 and the TPA component 2, the first limit assembly is used to limit the TPA component 2 from exiting the inner cavity 11 along the second direction, and the second limit assembly is used to limit the movement of the TPA component 2 in the third direction, and the two cooperate with each other to stably lock the TPA component 2.

[0028] It should be noted that, in other embodiments, the third direction may not be the vertically upward direction, as long as there is a non-zero angle between the third direction and the first direction. For example, the two limit arms 13 are both relative to their positions. Figure 3 The position in the middle is rotated 30° around the first direction so that the limiting direction of the second limiting component also becomes a direction inclined 30° relative to the vertical upward direction, that is, the third direction is a direction inclined 30° relative to the vertical upward direction. At this time, the limiting effect of the second limiting component in the third direction cooperates with the limiting effect of the first limiting component in the first direction, and it can still stably limit and lock the TPA component 2.

[0029] In some embodiments, see Figure 3 and Figure 4Since the two limit arms 13 have the same structure, taking any one of the two limit arms 13 as an example, the first limit assembly includes a first limit piece 22 and a first blocking piece 14, the first limit piece 22 is a hard convex strip extending along the third direction or opposite to the third direction and arranged on the outer left side or outer right side of the TPA assembly 2, and the first blocking piece 14 is a hard convex strip extending along the third direction or opposite to the third direction and arranged on the left side or right side of the inner cavity 11; in this regard, when the TPA assembly 2 is inserted into the inner cavity 11, the first blocking piece 14 and the first limit piece 22 block and limit each other to prevent the TPA assembly 2 from falling out of the inner cavity 11 from the second direction.

[0030] In some embodiments, see Figure 3 , Figure 4 ,as well as Figure 6 , refer to Figure 3 In the direction shown, the second limiting assembly includes a second limiting member 23 and a second limiting groove 15. The second limiting member 23 is a wedge-shaped protrusion opened on the outer left side or the outer right side of the TPA assembly 2 and inclined toward the third direction. The second limiting groove 15 is a wedge-shaped groove opened on the left side or the right side of the inner cavity 11 and inclined in the opposite direction of the third direction. The second limiting groove 15 is also opened in the middle of the first blocking member 14, and one end of the first blocking member 14 facing the third direction is also transformed into an inclined slope. The first limiting member 22 and the second limiting member The positioning members 23 are also arranged adjacent to each other along the first direction or the second direction; in this way, after the technician implants the TPA component 2 into the inner cavity 11 along the first direction and enables the first limiting component to play a limiting role, the technician can then push the TPA component 2 in a direction opposite to the third direction, that is, upward, to further push the second limiting member 23 into the second limiting groove 15, so that the second limiting component also plays a limiting role, thereby enabling the first limiting component and the second limiting component to play a limiting role together, so as to cooperate with each other to lock and fix the TPA component 2.

[0031] It should be noted that, in this embodiment, please refer to Figure 5 , the limiting arm 13 is made of elastic material. In this regard, the technician can use an auxiliary tool to move the limiting arm 13 in a direction away from the center of the inner cavity 11, so that the first limiting member 22 can first pass over the first blocking member 14 along the first direction, and after the limiting arm 13 is released and the limiting arm 13 elastically returns, the first limiting member 22 and the first blocking member 14 are mutually limited to block the limiting TPA component 2 in the second direction; and the technician can also push the TPA component 2 upward to open the two limiting arms 13 through the second limiting member 23, so that the second limiting member 23 can smoothly slide along the third direction and be inserted into the second limiting groove 15.

[0032] In addition, the technician can only manually push the two limit arms 13 outward to unlock the first limit assembly and the second limit assembly, thereby disassembling the TPA assembly 2.

[0033] In some embodiments, see Figure 2 and Figure 3 , refer to Figure 2 As shown in the orientation, in order to cooperate with the first limiting component to further limit the TPA component 2 and control the implantation depth of the TPA component 2, a third limiting component is provided between the TPA component 2 and the connector body 1, and the third limiting component includes a third limiting end face 16 arranged at the bottom of the inner cavity 11 and a third abutting protrusion 24 arranged on the TPA component 2. The third abutting protrusion 24 is two plate structures that are relatively arranged and respectively located on the upper and lower sides of the TPA component 2. When the left end of the third abutting protrusion 24 abuts against the third limiting end face 16, the TPA component 2 is limited in the first direction, and when the left end of the third abutting protrusion 24 abuts against the third limiting end face 16, the first limiting member 22 also happens to block and limit each other with the first blocking member 14.

[0034] In some embodiments, see Figure 2 and Figure 4 , refer to Figure 4 In the direction shown in the figure, since there are multiple interfaces 21 at the bottom of the TPA component 2, and the interfaces 21 at different positions have different shapes, the corresponding terminals 3 are also different. In order to avoid the terminal 3 not being connected to the correct interface 21 due to the error in the implantation direction of the TPA component 2, three fourth positioning protrusions 25 are provided in the middle of the TPA component 2 toward the first direction, and the three fourth positioning protrusions 25 are arranged from left to right; and, please refer to Figure 8 , refer to Figure 7 In the direction shown in , a structural rib is correspondingly provided in the middle of the inner cavity 11, and a plurality of grooves are provided on the upper side of the structural rib for cooperating with one of the third abutment protrusions 24 of the TPA assembly 2 to further form a connection structure for terminal connection, and the lower side wall of the structural rib is a guide side wall for guiding the three fourth positioning protrusions to move along the first direction.

[0035] In this regard, when the technician implants the TPA component 2 into the pre-installed position in the inner cavity 11, the three fourth positioning protrusions 25 are also simultaneously inserted into the inner cavity 11 along the first direction under the guidance of the lower side wall of the structural reinforcement to prevent the problem of misinstallation of the TPA component 2 and to ensure that the installation direction of the TPA component 2 is correct.

[0036] Also, see Figure 4, the three fourth positioning protrusions 25 are also provided with limiting end edges 26 at the ends facing the first direction, wherein the fourth positioning protrusion 26 on the far left is provided with limiting end edges 26 on both sides, and the other two fourth positioning protrusions 25 have limiting end edges 26 only on the right side; in this regard, when the technician pushes the TPA assembly 2 from the pre-installed position to the locked position, the three fourth positioning protrusions 25 are also moved along the third direction at the same time, so that the four limiting end edges 26 respectively enter the four connection ports to block and limit the terminals 3 plugged into the connection ports to prevent the terminals from loosening.

[0037] In some embodiments, the inner cavity 11 is provided with a pre-installed position and a locking position. To facilitate the implantation of the TPA component 2 and to enable the TPA component 2 to be accurately pushed and implanted into the locking position of the inner cavity 11, please refer to Figure 6 ,by Figure 6 Taking the direction shown in as an example, the pre-installation position is located directly below the locking position. It can also be understood that the pre-installation position is located in the direction opposite to the third direction of the locking position.

[0038] See also Figure 2 , refer to Figure 2 In the direction shown, an abutment positioning assembly is also provided between the TPA assembly 2 and the connector body 1, and the abutment positioning assembly includes abutment positioning end faces 5 which are relatively arranged and respectively located on the TPA assembly 2 and in the inner cavity 11, namely: the upper end face of the third abutment protrusion 24 below the TPA assembly 2, the lower end face of the left front end of the structural plate, and the lower end face of the right rear end of the structural plate are all the abutment positioning end faces 5.

[0039] In this regard, in the process of pushing the TPA component 2 to be implanted into the pre-installed position in the inner cavity 11, the technician can make the upper end surface of the third abutment protrusion 24 below the TPA component 2 contact the lower end surface of the left front end of the structural plate and the lower end surface of the right rear end of the structural plate at the same time, and push the TPA component 2 along the first direction until the third abutment protrusion 24 abuts against the third abutment end surface, thereby pushing the TPA component 2 to accurately reach the pre-installed position.

[0040] Also, see Figures 2 to 4 , refer to Figure 2In the direction shown in , a positioning locking component is further provided between the TPA component 2 and the connector body 1, and the positioning locking component includes positioning locking end faces 4 that are relatively arranged and respectively located on the TPA component 2 and in the inner cavity 11, namely: the lower end face of the third abutting protrusion 24 above the TPA component 2, the upper end face of the left front end of the structural plate, and the upper end face of the right rear end of the structural plate are all positioning locking end faces 4. In this regard, when the TPA component 2 is pushed downward to the locking position, the lower end face of the third abutting protrusion 24 above the TPA component 2 is simultaneously abutted against the upper end face of the left front end of the structural plate and the upper end face of the right rear end of the structural plate to limit the TPA component 2 in the upward direction opposite to the third direction, so as to cooperate with the second limiting component to accurately lock the TPA component 2 and further prevent the TPA component 2 from moving upward.

[0041] It should be noted that in this embodiment Figure 2 The orientation of TPA component 2 in Figure 6 The TPA component 2 in the embodiment is oriented in the opposite direction.

[0042] An assembly method according to a specific embodiment of the present invention is used to assemble the connector in the above embodiment, and the assembly method comprises the following steps: Step S1, pushing the TPA component 2 into the inner cavity 11 along the direction from the rear end to the head end of the connector body 1 until the TPA component 2 is limited by the first limiting component; Step S2, pushing the TPA component 2 in a direction perpendicular to the direction from the tail end to the head end of the connector body 1 in the area between the bottom end of the inner cavity 11 and the first limiting component until the TPA component 2 is limited by the second limiting component to complete the assembly.

[0043] For details, please refer to Figure 1 and Figure 2 In this embodiment, the pre-installed position is the position where the TPA component 2 is limited by the first limiting component, and the inner cavity 11 is set to a shape in which the tail end space is larger than the head end space; in step S1, when the TPA component 2 is pushed into the inner cavity 11 of the connector body 1 along the direction from the tail end to the head end of the connector body 1, the force-bearing surface of the TPA component 2 is its bottom end surface; in the process of the TPA component being pushed into the inner cavity 11 at the pre-installed position and limited by the first limiting component, the TPA component is also guided to move by the abutment positioning component, and is also abutted and limited by the left and right cavity walls of the inner cavity 11, so as to reduce the collision between the TPA component 2 and the connector body 1 in the process of being pushed to the pre-installed position, reduce the installation damage to the TPA component 2, the connector body 1 and even the entire connector, and reduce the probability of the TPA component 2 being installed in the wrong position.

[0044] In some embodiments, after step S1 is completed, in addition to being limited in the second direction by the first limiting component, the TPA component 2 is also limited in the first direction with the inner cavity 11 by the third limiting component, that is, the TPA component 2 abuts against the third limiting end surface 16 at the bottom of the inner cavity 11 through the third abutting protrusion 24; at this time, with the cooperation of the first limiting component and the third limiting component, the TPA component 2 can only be pushed along the third direction or in the direction opposite to the third direction.

[0045] For this, see Figure 2 In step S2, when the TPA component 2 is pushed from the pre-installed position to the locked position in an upward direction (opposite to the third direction), the mutual limiting action of the first limit component and the third limit component can also be regarded as guiding the TPA component 2 when it moves upward, so as to simplify the difficulty of pushing the TPA component 2 from the pre-installed position to the locked position.

[0046] Anything not mentioned above is applicable to the prior art.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connector with a rear-mounted TPA assembly, characterized in that: The connector comprises a connector body (1), a TPA component (2), and a terminal (3); the rear end of the connector body (1) has an inner cavity (11) for implanting the TPA component (2); the inner cavity (11) has an implantation opening (12); the bottom of the TPA component (2) is provided with an interface (21) for connecting the terminal (3); the TPA component (2) is implanted in the inner cavity (11) along the direction from the rear end to the head end of the connector body (1); a first limiting component is provided between the TPA component (2) and the connector body (1), the first limiting component is used to limit the TPA component (2) from exiting the inner cavity (11); a second limiting component is also provided between the TPA component (2) and the connector body (1), the second limiting component is used to limit the movement of the TPA component (2) in the inner cavity (11); a waterproof gasket is also provided on the side of the rear end of the connector body facing its head end.

2. The connector according to claim 1, wherein: An elastic limiting arm (13) is also provided in the inner cavity (11) of the connector body (1). The limiting arm (13) is arranged obliquely toward the center direction of the inner cavity (11). The limiting arm (13) is also extended toward the implant opening (12). The first limiting assembly and the second limiting assembly are both arranged between the limiting arm (13) and the TPA assembly (2).

3. The connector according to claim 1, wherein: The implantation and installation direction of the TPA component (2) is taken as a first direction, and the second direction is opposite to the first direction. The first limiting component comprises a first limiting member (22) and a first blocking member (14). The first limiting member (22) is arranged on the outside of the TPA component (2), and the first blocking member (14) is arranged in the inner cavity (11). The first limiting member (22) and the first blocking member (14) block and limit each other to limit the TPA component (2) from exiting the inner cavity (11) along the second direction.

4. The connector according to claim 3, characterized in that The second limiting component comprises a second limiting member (23) and a second limiting groove (15), wherein the second limiting member (23) is arranged on the outer side of the TPA component (2), and the second limiting groove (15) is provided in the inner cavity (11), and the second limiting member (23) and the second limiting groove (15) cooperate with each other to limit the TPA component (2) in a direction other than the first direction and / or the second direction, thereby limiting the movement of the TPA component (2) in the inner cavity (11); along the first direction or the second direction, the first limiting member and the second limiting member are arranged adjacent to each other, and the second limiting groove is also provided on the first blocking member; the direction in which the second limiting member (23) and the second limiting groove (15) cooperate with each other to limit the TPA component (2) is a third direction, and the third direction is perpendicular to the first direction, the second limiting member (23) is also arranged to be inclined toward the third direction, and the second limiting groove (15) is arranged to be inclined in the opposite direction of the third direction.

5. The connector according to claim 4, characterized in that: A locking position is provided in the inner cavity (11), and a positioning locking assembly is also provided between the TPA assembly (2) and the connector body (1). The positioning locking assembly comprises positioning locking end faces (4) which are arranged opposite to each other and are respectively located on the TPA assembly (2) and in the inner cavity (11). When the second limiting member (23) is inserted into the second limiting groove (15), the two positioning locking end faces (4) just contact each other to abut against each other for limiting, thereby cooperating with the second limiting assembly to fix the TPA assembly (2) at the locking position, so as to facilitate the connection between the terminal (3) and the TPA assembly (2).

6. The connector according to claim 1, wherein: A pre-installed position is also provided in the inner cavity (11), and an abutment positioning component is also provided between the TPA component (2) and the connector body (1), the abutment positioning component comprising abutment positioning end faces (5) which are arranged opposite to each other and are respectively located on the TPA component (2) and in the inner cavity (11), the two abutment positioning end faces (5) being positioned by contacting and sliding with each other so that the TPA component (2) can be implanted in the pre-installed position.

7. The connector according to claim 1, wherein: A third limiting component is provided between the TPA component (2) and the connector body (1), the third limiting component comprising a third limiting end surface (16) arranged at the bottom of the inner cavity (11) and a third abutting protrusion (24) arranged on the TPA component (2), the third abutting protrusion (24) being limited by abutting against the third limiting end surface (16) to control the implantation depth of the TPA component (2).

8. The connector according to claim 1, wherein: At least one fourth positioning protrusion (25) is provided on the TPA component (2), and a structural rib body for forming a connection port for the terminal (3) to be plugged in is also provided in the inner cavity (11), and the fourth positioning protrusion (25) cooperates with the structural rib body to guide the positioning of the TPA component.

9. An assembly method for assembling the connector according to any one of claims 1 to 8, characterized in that: The assembly method comprises the following steps: Step S1, pushing the TPA component (2) into the inner cavity (11) along the direction from the rear end to the head end of the connector body (1) until the TPA component (2) is limited by the first limiting component; Step S2, pushing the TPA component (2) in a direction perpendicular to the direction from the rear end to the head end of the connector body (1) to move in the area between the bottom end of the inner cavity (11) and the first limiting component until the TPA component (2) is limited by the second limiting component, thereby completing the assembly.

10. The assembly method according to claim 9, characterized in that: In the step S1, a guiding structure is provided on the cavity wall of the inner cavity (11) to guide the TPA component (2) to be pushed to a position where it is limited by the first limiting component; in the step S2, the first limiting component and the bottom end of the inner cavity cooperate to guide the TPA component (2) to be pushed to a position where it is limited by the second limiting component.

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