CN206135117U - A TPA structure for shielded electrical connector - Google Patents

Abstract

The utility model discloses a TPA structure used for shielding electrical connectors, which includes a housing and a shielding cable. One end of the housing is provided with a terminal receiving chamber, and the other end is provided with a sealing wire receiving chamber. The terminal Terminals are installed in the storage cavity, and a baffle plate and a sealing body are installed in the sealing wire storage cavity in order from the inside to the outside, and a tail is installed on the end of the housing provided with the sealing wire storage cavity. The shielded cable passes through the tail clip, the sealing body, and the baffle in turn and is riveted into one with the terminal. The shielded cable is sequentially installed with a shielded inner sleeve and a shielded outer sleeve, and the shielded cable, the shielded inner sleeve The tube and the shielding outer sleeve are closely combined by riveting. The shielding inner sleeve and the shielding outer sleeve are located beside the baffle to realize the limit of the terminal after installation and prevent the terminal from falling off, greatly increasing the terminal in the connector. The retention force makes the structure suitable for the use requirements of new energy vehicles for high-voltage electrical connectors.

Description

TPA structure for shielding electrical connectors

technical field

The utility model relates to the field of high-voltage shielding electrical connectors for new energy vehicles, in particular to a TPA structure used for shielding electrical connectors.

Background technique

Existing high-voltage shielded electrical connectors, especially high-voltage shielded power connectors with punched terminals for new energy vehicles, usually have two ways to fix the punched terminals in the connector, one is that the terminals themselves have metal shrapnel , the terminal relies on the metal shrapnel to hang with the hanging table in the terminal receiving cavity in the connector, so that the terminal is fixed in the connector; the other is to set a plastic spring tongue in the terminal receiving cavity of the connector, and the plastic spring tongue after the terminal is loaded Extending into the terminal base body through elastic deformation, so as to realize the fixing of the terminal in the connector.

Analyzing the above two terminal fixing methods, the holding of the terminal in the connector needs to be realized by an elastic structure. One is to rely on the elastic force of the metal shrapnel, and the other is to rely on the elastic force of the plastic spring tongue. The high-voltage connector of the new energy vehicle is due to Involving high voltage, it must be safe and reliable enough, so there are high requirements for contact reliability, which requires the terminal to have sufficient holding force in the connector (that is, the force to prevent the terminal from falling off the connector housing). For elasticity structure, higher reliability must be realized with high-strength materials and larger structures, which is contrary to the development trend of miniaturization, lightweight, and low-cost connectors for new energy vehicles;

In summary, it can be seen that the fixing effect of the terminals of the existing high-voltage shielded power connectors with punched terminals for new energy vehicles in the connector is not ideal, and there are safety hazards in the connection structure.

Utility model content

The utility model overcomes the disadvantage of poor fixing effect of terminals in the connector in the prior art, and provides a TPA for shielding electrical connectors that increases the fixing effect of terminals in the connector, thereby improving the contact reliability of the connector structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

A TPA structure used for shielding electrical connectors, which includes a housing and a shielding cable. One end of the housing is provided with a terminal receiving cavity, and the other end is provided with a sealing body receiving cavity. The terminal receiving cavity is equipped with a terminal, the sealing body housing cavity is installed with a baffle and a sealing body in order from the inside to the outside, the housing is equipped with a tail clip at the end of the sealing body housing cavity, and the shielding The cable passes through the tail clamp, the sealing body, and the baffle in turn, and is riveted into one with the terminal. The shielded cable is installed with a shielded inner sleeve and a shielded outer sleeve in sequence, and the shielded cable, the shielded inner sleeve and the shielded outer sleeve are The way of riveting is tightly combined, and the shielding inner sleeve and the shielding outer sleeve are both located beside the baffle.

A further technical solution is that a terminal hanger is provided in the terminal receiving cavity, and a terminal metal shrapnel is arranged on the terminal, and the terminal metal shrapnel is clamped with the terminal hanger, and the terminal is fixedly mounted on the terminal storage space. Inside the cavity.

A further technical solution is that the surface of the tail clip is provided with a cable hole for the tail clip, the surface of the sealing body is provided with a sealing inner lip, the surface of the baffle is provided with a baffle cable hole, and the shielded cable Pass through the cable hole of the back clip, the sealing inner lip and the cable hole of the baffle in sequence.

A further technical solution is that, the housing is respectively provided with hanging platforms on both sides of the end portion provided with the sealing wire body receiving cavity, and the two sides of the tail clip are respectively provided with cantilever hanging grooves matched with the hanging platforms, so that After the cantilever hanging groove is clamped with the hanging table, the tail clip is fixedly installed on the housing.

A further technical solution is that the edge of the sealing wire body is provided with a sealing outer lip, and the sealing outer lip is matched with the housing cavity of the sealing wire body to realize a tail seal.

A further technical solution is that the diameter of the cable through hole of the baffle is smaller than the outer diameter of the shielding outer sleeve.

A further technical solution is that the shielding outer sleeve has a crimping portion at its end close to the baffle, and a shielding contact portion at its end away from the baffle.

A further technical solution is that a metal shield is further provided in the housing, and the metal shield is provided with a shield contact claw, and the shield contact claw contacts the shield contact part to realize shield conduction.

A further technical solution is that the shielded cable includes a cable core, and the cable core is sequentially provided with a cable insulating rubber and a cable outer sheath.

In the prior art, since the terminal is connected to the shielded cable, when the electrical connector is in use, the terminal is only fixedly installed in the connector housing by the elastic force provided by the metal spring or plastic spring, so when the shielded cable is pulled, The terminals are easy to fall off from the connector housing, so the connector contact reliability is very low, and this structure cannot meet the requirements for the use of high-voltage connectors for new energy vehicles. Therefore, in this technical solution, the shielded inner sleeve and the shielded outer sleeve are installed on the shielded cable, and the three are tightly combined by riveting. Then install the tail clip. First, because the shielding inner sleeve and the shielding outer sleeve are arranged next to the baffle, so that after the shielded cable is connected to the terminal and installed in the housing, the displacement of the shielded cable can be restricted by the baffle, so that It can realize the position limit after the terminal is installed. When the shielded cable is pulled outward, that is, when the terminal is subjected to the force to separate it from the housing, at this time, the terminal metal shrapnel is firstly connected with the terminal hanger to make the terminal Realize the first fixation in the shell, and then, the second fixation of the terminal in the shell can be realized through the shielding outer sleeve, shielding inner sleeve, baffle, sealing body, tail clamp and so on, so that the terminal is in the shell The installation in the body is more stable and will not fall off. The details are as follows. First, because the baffle is fixedly installed in the housing, a shielding sleeve is provided on one side of the baffle, and the diameter of the cable hole of the baffle is smaller than the outer diameter of the shielding sleeve. In this way, a resistance can be provided to the shielding outer sleeve, which can prevent the shielded cable from moving outward when it receives an external force, thereby preventing the terminal from falling off. The lip and the shell are sealed at the tail, that is, the sealing body is also fixedly installed in the shell, so that the sealing body can provide a resistance to the baffle and prevent the baffle from moving outward. The third is through the cantilever hanging groove and the hanging table. Cooperate with the tail clamp and fix it on the shell, so that the tail clamp can provide a resistance to the sealing body, thereby preventing the sealing body from moving outward. In summary, through the shielding outer sleeve, shielding inner sleeve, and baffle , the sealing body, the tail clip, and the resistance provided in turn (that is, the force opposite to the force that the terminal is subjected to to make it break away from the housing), so that the terminal will not fall off from the housing.

In this technical solution, a metal shield is provided inside the shell, shield contact claws are arranged inside the metal shield, a shield contact part is provided at the front end of the shield outer sleeve, a riveting part is provided at the rear, and the shield contact part contacts the shield contact claws, thereby realizing Shield conduction.

Compared with the prior art, the beneficial effects of the utility model are:

In the utility model, components such as a shielding outer sleeve, a shielding inner sleeve, a baffle plate, a sealing body, and a tail clip are arranged at the rear of the terminal, so as to realize the position limitation of the terminal after installation and prevent the terminal from falling off, greatly increasing the terminal's The retention force in the connector makes the structure suitable for the use requirements of new energy vehicles for high-voltage electrical connectors.

Description of drawings

FIG. 1 is a schematic diagram of an exploded structure of a TPA structure used for shielding an electrical connector according to an embodiment of the present invention.

FIG. 2 is an assembly diagram of FIG. 1 .

FIG. 3 is a schematic structural diagram of the housing in FIG. 1 .

Fig. 4 is a schematic structural diagram of the sealing body in Fig. 1 .

FIG. 5 is a schematic structural diagram of the tail clip in FIG. 1 .

FIG. 6 is a schematic structural diagram of the shielded cable in FIG. 1 .

As shown in the figure, the corresponding reference numerals are:

1-housing, 11-terminal storage cavity, 111-terminal hanger, 12-metal shield, 121-shield contact claw, 13-hanger, 14-sealing body cavity, 2-terminal, 21-terminal metal Shrapnel, 3-shielding outer sleeve, 31-shielding contact part, 32-riveting part, 4-shielding inner sleeve, 5-baffle, 51-baffle cable hole, 6-sealing body, 61-outer seal Lip, 62-sealed inner lip, 7 tail clamps, 71-cantilever hanging groove, 72-tail clamp cable through hole, 8-shielded cable, 81-cable insulation rubber, 82-cable outer sheath.

detailed description

Below in conjunction with accompanying drawing, the utility model is further elaborated.

As shown in Figure 1-6, the TPA structure used for shielding electrical connectors includes the housing 1 and the shielding cable 8. One end of the housing 1 is provided with a terminal receiving cavity 11, and the other end is provided with a sealing body receiving cavity 14. The terminal 2 is installed in the terminal housing cavity 11, the baffle plate 5 and the wire sealing body 6 are installed in the sealing wire housing cavity 14 according to the order from the inside to the outside, and the housing 1 is provided with the end of the sealing wire housing cavity 14. A tail clip 7 is installed at the bottom, and the shielded cable 8 passes through the tail clip 7, the sealing body 6, and the baffle 5 in turn, and is riveted with the terminal 2 to form one body. The shielded cable 8 is sequentially installed with a shielded inner sleeve 4 and a shielded outer sleeve. 3, and the shielded cable 8, the shielded inner sleeve 4 and the shielded outer sleeve 3 are closely connected by riveting, the shielded inner sleeve 4 and the shielded outer sleeve 3 are located next to the baffle 5, and the terminal receiving cavity 11 is provided with a terminal Hanging table 111, the terminal 2 is provided with a terminal metal shrapnel 21, and after the terminal metal shrapnel 21 and the terminal hanging table 111 are snapped together, the terminal 2 is fixedly installed in the terminal storage cavity 11, and the surface of the tail clip 7 is provided with a tail clip cable through hole 72, the surface of the sealing body 6 is provided with a sealing inner lip 62, the surface of the baffle 5 is provided with a baffle cable through hole 51, and the shielded cable 8 passes through the tail clip cable through hole 72, the sealed inner lip 62 and the baffle cable in turn Via 51 .

According to an embodiment of the present utility model, the housing 1 is provided with hanging platforms 13 on both sides of the end portion where the sealing body housing chamber 14 is provided, and the two sides of the tail clip 7 are respectively provided with cantilever hangers matched with the hanging platforms 13. Groove 71, the cantilever hanging groove 71 and the hanging table 13 are clamped and the tail clip 7 is fixedly installed on the housing 1. The edge of the sealing line body 6 is provided with a sealing outer lip 61, and the sealing outer lip 61 is accommodated with the sealing line body After the cavity 14 is matched, the tail end is sealed, and the diameter of the baffle cable through hole 51 is smaller than the outer diameter of the shielding outer sleeve 3 .

According to an embodiment of the present utility model, the shielding outer sleeve 3 has a riveting part 32 at its end close to the baffle 5, and a shielding contact part 31 at its end far away from the baffle 5. The housing 1 is also provided with a metal shielding The cover 12, the metal shielding cover 12 is provided with a shielding contact claw 121, and the shielding contact claw 121 is in contact with the shielding contact portion 31 to realize shielding conduction.

According to an embodiment of the present invention, the shielded cable 8 includes a cable core, on which a cable insulating rubber 81 and a cable outer sheath 82 are sequentially arranged.

The above specific embodiments describe the essence of the utility model in detail, but can not limit the protection scope of the utility model. Obviously, under the enlightenment of the utility model, those of ordinary skill in the art can also make many improvements and modifications. It should be noted that these improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims (9)

1. A TPA structure for shielding electrical connectors, characterized in that it includes a housing (1) and a shielded cable (8), and one end in the housing (1) is provided with a terminal accommodating chamber (11) , the other end is provided with a sealing body housing cavity (14), the terminal (2) is installed in the terminal housing cavity (11), and the sealing wire housing cavity (14) is installed in order from inside to outside The baffle (5) and the sealing body (6), the housing (1) is provided with a tail clip (7) at the end of the sealing body accommodation cavity (14), and the shielded cable (8) Pass through the tail clamp (7), sealing body (6) and baffle plate (5) in turn, and then riveted together with the terminal (2), and the shielded cable (8) is sequentially installed with a shielded inner sleeve (4) and the shielded outer sleeve (3), and the shielded cable (8), the shielded inner sleeve (4) and the shielded outer sleeve (3) are tightly combined by riveting, and the shielded inner sleeve (4) and the shielded outer sleeve (3) are all positioned at the side of baffle plate (5). 2. The TPA structure used for shielding electrical connectors according to claim 1, characterized in that, a terminal hanging table (111) is provided in the terminal accommodation cavity (11), and a terminal hanger (111) is provided on the terminal (2). The terminal metal shrapnel (21), the terminal metal shrapnel (21) is clamped with the terminal hanger (111), and then the terminal (2) is fixedly installed in the terminal receiving cavity (11). 3. The TPA structure for shielding electrical connectors according to claim 1, characterized in that, the surface of the tail clip (7) is provided with a tail clip cable via hole (72), and the sealing body (6) The surface is provided with a sealing inner lip (62), the surface of the baffle (5) is provided with a baffle cable hole (51), and the shielded cable (8) passes through the tail clip cable hole (72), sealing Inner lip (62) and baffle cable access (51). 4. The TPA structure for shielding electrical connectors according to claim 3, characterized in that, the housing (1) is respectively provided with two Hanging table (13), the two sides of the tail clip (7) are respectively provided with cantilever hanging grooves (71) that cooperate with the hanging table (13), and the cantilever hanging grooves (71) are snapped into the hanging table (13) Fix the end clip (7) on the housing (1). 5. The TPA structure for shielding electrical connectors according to claim 3, characterized in that, the edge of the sealing wire body (6) is provided with a sealing outer lip (61), and the sealing outer lip ( 61) After cooperating with the sealing line body accommodation cavity (14), the tail end is sealed. 6. The TPA structure for shielding electrical connectors according to claim 3, characterized in that the diameter of the baffle cable through hole (51) is smaller than the outer diameter of the shielding outer sleeve (3). 7. The TPA structure for shielding electrical connectors according to claim 1, characterized in that, the shielding outer sleeve (3) is a riveted portion (32) at its end close to the baffle (5), and Its end away from the baffle (5) is a shielding contact portion (31). 8. The TPA structure for shielding electrical connectors according to claim 7, characterized in that, a metal shield (12) is also arranged in the housing (1), and the metal shield (12) is set There are shielding contact claws (121), and the shielding contact claws (121) are in contact with the shielding contact portion (31) to realize shielding conduction. 9. The TPA structure for shielding electrical connectors according to claim 1, characterized in that, the shielded cable (8) includes a cable core, and the cable insulation rubber (81) and cable Outer sheath (82).