CN207852985U - Connecting terminal, electrical connection assembly and electrical connector assembly - Google Patents

Abstract

The utility model discloses a connection terminal, an electric connection assembly and an electric connector assembly. The connecting terminal includes a terminal body. The terminal body has an axial extension direction. The terminal body has a lumen wall. The lumen wall defines a lumen. The lumen extends along the axial direction of the terminal body, and is used for plug-fitting with mating terminals and electrically connecting with each other; and the connecting terminals are plate punching parts. The connecting terminal has a simplified structure and is convenient for mating.

Description

Connecting terminal, electrical connection assembly and electrical connector assembly

technical field

The utility model relates to an electric connection structure, in particular to a connection terminal, an electric connection assembly and an electric connector assembly.

Background technique

With the continuous application of electrical products, more and more connection terminals are used to realize the electrical connection between different electronic components. In particular, with the utilization of new energy sources, the use of electric vehicles is also increasing. Correspondingly, electrical connections inside vehicles such as electric vehicles often require corresponding connection terminals. How to make the connection terminal more suitable for the application becomes a factor that needs to be considered.

Utility model content

One of the purposes of the utility model is to overcome the deficiencies in the prior art and provide a connection terminal, an electrical connection assembly and an electrical connector assembly which are simple in structure and convenient for mating connection.

In order to achieve the above purpose, the utility model is realized through the following technical solutions:

The utility model provides a connection terminal. The connection terminal includes a terminal body. The terminal body has an axial extension direction. The terminal body has a lumen wall. The lumen wall defines a lumen. The lumen is extended along the axial direction of the terminal body, and is used for plug-fitting with the mating terminals and electrically connecting with each other; and the connecting terminals are plate punching parts.

Preferably, the connection terminal further includes an external connection part. The external connecting portion is continuously extended laterally from the terminal body, and is used for connecting external elements.

Preferably, the connection terminal further includes a guide portion. The guide portion is disposed on the outer peripheral surface of the terminal body. The guide portion is used to guide the connecting terminal to be axially installed into the mating housing.

Preferably, the connection terminal further includes a second guide portion. The second guide part is arranged on the outer peripheral surface of the terminal body, and is used for blocking and matching with the mating housing in the circumferential direction.

Preferably, the connection terminal further includes an axial retaining portion. The axial holding portion is a concave portion radially inwardly recessed from the outer peripheral surface of the terminal body. When the terminal body is installed into the accommodating cavity of the mating housing, the axial retaining portion can axially block fit with the mating housing.

Preferably, the axial retaining portion includes a retaining hole. The holding hole is surrounded by a wall of the holding hole, and the wall of the holding hole can axially block and cooperate with the anti-retraction part of the matching housing.

Preferably, the axial retaining portion further includes a limiting notch. The limiting notch is surrounded by walls of the limiting notch. When the secondary lock extends into the limiting notch, the wall of the limiting notch is used to axially block and cooperate with the secondary lock.

Preferably, the connection terminal further includes an installation and holding part. The mounting and retaining portion is protrudingly disposed on the inner surface of the lumen wall, and is used for axially blocking cooperation with the contact connector.

Preferably, the installation and holding portion includes a first protrusion and a second protrusion;

The first protruding portion and the second protruding portion are axially spaced apart. When the mating connector is installed axially between the first protrusion and the second protrusion, the mating connector can axially block the first protrusion and the second protrusion Cooperate.

Preferably, the connecting terminal is stamped from a whole metal plate.

Preferably, the metal plate has a first seam wall and a second seam wall. The first seam wall is opposite to the second seam wall. The first seam wall is provided with a limiting notch or a limiting groove. A retaining arm protrudes from the second seam wall. The retaining arm extends into the limiting notch or limiting groove along the circumference of the connecting terminal.

Preferably, the thickness of the lumen wall is uniform.

Preferably, the lumen is a circular lumen.

Preferably, the connection terminal is used for high-current electrical connection inside the electric vehicle.

The utility model provides an electrical connection assembly. The electrical connection assembly includes the connection terminal and the support case according to any one of the foregoing. The support housing includes cavity walls. The wall of the cavity surrounds a cavity. The connecting terminal extends into the accommodating cavity.

Preferably, the cavity wall is formed with a front end and a rear end in the axial direction. The front end of the cavity wall is provided with a blocking portion. The blocking portion protrudes radially inward. The terminal body is axially formed with a front end wall and a rear end wall. The front end wall of the terminal body can axially block fit with the blocking portion.

Preferably, the electrical connection assembly further includes contact connectors. The contact connector is accommodated in the lumen of the connection terminal. The contact connector is in electrical contact with the lumen wall, and is used for contact electrical connection with the mating terminal.

Preferably, the contact connector is an independent integral part, and is detachably accommodated in the lumen of the connection terminal.

Preferably, the electrical connection assembly further includes an insulating protection member. The insulating protection part is fixedly arranged in the lumen, and extends out of the lumen, so as to block and cooperate with the fingers of the human body.

Preferably, the insulating guard includes mounting feet. The inner wall of the lumen wall is provided with a guard mounting hole for accommodating and cooperating with the mounting feet to keep the insulating guard at an axial position in the lumen.

Preferably, holding holes are provided on the outer wall of the lumen wall. The holding hole is surrounded by a wall of the holding hole, and the wall of the holding hole can axially block and cooperate with the anti-retraction part of the supporting shell.

Preferably, the holding hole and the mounting hole of the guard communicate with each other to form a through hole for the connecting terminal to axially block fit with the supporting shell and the insulating guard at the same time.

Preferably, the insulating protection member further includes a protective blocking arm, the protective blocking arm extends to the front end of the lumen, and is used for blocking human fingers so as to prevent human fingers from making false contact with the connection terminals.

The utility model provides an electrical connector assembly. The electrical connector assembly includes the electrical connection assembly and a mating connector according to any one of the foregoing. The mating connector includes mating terminals. The mating terminal extends into the lumen and is electrically connected with the connecting terminal.

Compared with the prior art, the connecting terminal of the utility model can be mated and plugged with the corresponding male terminal through the lumen, and the overall structure is simplified. The connecting terminal is formed by stamping, which can save material and manufacturing cost, and is beneficial to popularization and application.

Description of drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a connection terminal provided by the present invention.

FIG. 2 is a schematic perspective view of the three-dimensional structure of the connecting terminal in FIG. 1 at another viewing angle.

FIG. 3 is a schematic diagram of the axial projection from the front end to the rear end of the connecting terminal in FIG. 1 .

Fig. 4 is a cross-sectional view of an electrical connection assembly provided by the present invention.

FIG. 5 is a schematic perspective view of the electrical connection assembly in FIG. 4 provided with mating terminals.

FIG. 6 is a schematic perspective view of another embodiment of the connection terminal in FIG. 1 .

FIG. 7 is a schematic perspective view of the three-dimensional structure of the connecting terminal in FIG. 6 at another viewing angle.

FIG. 8 is a schematic three-dimensional structure diagram of an electrical connection assembly provided by the present invention including the connection terminal in FIG. 6 .

FIG. 9 is an axial perspective cross-sectional view of the electrical connection assembly of FIG. 8 .

FIG. 10 is an axial cross-sectional view of the electrical connection assembly of FIG. 8 .

FIG. 11 is a schematic perspective view of another embodiment of the electrical connection assembly in FIG. 8 .

FIG. 12 is a schematic perspective view of another embodiment of the connection terminal in FIG. 1 .

FIG. 13 is a schematic projection view from the front end to the rear end of the connecting terminal in FIG. 12 .

FIG. 14 is a three-dimensional schematic diagram of an electrical connection assembly provided by the present invention including the connection terminal in FIG. 12 .

FIG. 15 is a schematic projection view from the front end to the rear end of the electrical connection assembly in FIG. 14 .

FIG. 16 is a schematic projection view from the rear end to the front end of the electrical connection assembly in FIG. 14 .

Fig. 17 is a cross-sectional view of yet another embodiment of the electrical connection assembly of Fig. 14 .

Fig. 18 is a schematic perspective view of the three-dimensional structure of the electrical connector provided by the utility model including the electrical connection assembly of Fig. 17.

FIG. 19 is a schematic perspective view of another embodiment of the connection terminal in FIG. 1 .

FIG. 20 is a three-dimensional structural schematic diagram of an electrical connector provided by the present invention including the connecting terminal of FIG. 19 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

Embodiment one:

Please refer to FIG. 1 to FIG. 3 , which are a connection terminal 101 provided by the present invention. The connection terminal 101 is used to realize the connection to power distribution. As a preferred embodiment, the connection terminal 101 is a female terminal that can be mated with a male terminal to realize electrical connection.

The connection terminal 101 includes a terminal body 10 . The specific shape and structure of the terminal body 10 only need to be able to support other structures of the connecting terminal 101 . The terminal body 10 has an axial direction. Correspondingly, the connecting terminal 10 is mated and connected with the corresponding male terminal along the axial direction. The connecting terminal 10 is formed with a front end 10a and a rear end 10b in the axial direction. Correspondingly, the front end 10a of the connection terminal 10 and the corresponding male terminal are firstly contacted and mated for assembly. The terminal body 10 also has a radial direction perpendicular to the axial direction. The connection terminal 10 has an outer peripheral surface 12a. The outer peripheral surface 12 a extends along the circumferential direction of the terminal body 10 . The outer peripheral surface 12a may include the outer peripheral surface of the lumen wall 12 described below. That is, the outer peripheral surface of the lumen wall 12 is configured as the outer peripheral surface 12 a of the terminal body 10 . Preferably, the terminal body 10 has a lumen wall 12 . The lumen wall 12 encloses a lumen 14 . Correspondingly, the lumen 14 is used to accommodate a male terminal, and is electrically connected to the male terminal through the lumen wall 12 . Specifically, the lumen 14 extends axially to form a through cavity. The specific shape of the lumen 14 can be selected according to requirements, as long as it can be mated with the corresponding male terminal. In order to facilitate the insertion and mating with the mating male terminal, in this embodiment, the lumen 14 is substantially a circular lumen.

In order to make full use of materials, facilitate manufacturing and maintain corresponding uniform performance, the thickness of the lumen wall 12 of the terminal body 10 is uniform.

A guiding portion 30 is disposed on the terminal body 10 . The guide portion 30 radially protrudes from the outer peripheral surface of the terminal body 10 . Specifically, the guide portion 30 protrudes continuously radially outward from the outer peripheral surface 12 a of the terminal body 10 . The guide portion 30 is used to accurately guide and install the connecting terminal 101 to a preset position in the corresponding support housing 200 . The guide part 30 can be any protruding structure, so as to be able to extend into the matching holding part 240 of the support housing 200 which is a limiting groove. In this embodiment, the guide portion 30 is a boss. In order to further facilitate the quick assembly of the connection terminal 101 and the support housing 200 , the guide portion 30 axially extends to the front end 10 a of the terminal body 10 . According to needs, the guide portion 30 can be axially protruded relative to the front end 10 a of the terminal body 10 . In this embodiment, in order to fully save material and space, the guide portion 30 is flush with the front end 10 a of the terminal body 10 . For the convenience of manufacture, in this embodiment, the guide portion 30 is a stamping structure. That is, the guide portion 30 is recessed from the inner surface of the lumen wall 12 and protrudes from the outer surface of the lumen wall 12 .

In order to further enhance the stable integration performance of the connecting terminal 101 firmly assembled in the corresponding supporting housing 200 , the guiding portion 30 has a side wall 32 . The side wall 32 is used to block and cooperate with the supporting shell 200 in a circumferential direction, so as to prevent the connecting terminal 101 from rotating relative to the supporting shell 200 . Correspondingly, the side wall 32 of the guide portion 30 is a blocking wall. In order to further stably hold the connecting terminal 101 , in this embodiment, a pair of side walls 32 , 32 b can respectively be fitted with the supporting shell 200 in a circumferential blocking direction, so as to prevent the connecting terminal 101 from being locked relative to the supporting shell 200 . Turn counterclockwise, turn clockwise.

In order to further facilitate the rapid installation of the connection terminal 101 to the correct position of the corresponding supporting shell 200 , the connection terminal 101 further includes a second guide portion 40 . The second guiding portion 40 radially protrudes from the outer peripheral surface of the terminal body 10 . The second guide part 40 may have the same structure as the guide part 30 . Correspondingly, the second guide portion 40 is roughly in the shape of a boss. In order to further improve the guiding performance of the second guiding portion 40 , the second guiding portion 40 is axially spaced apart from the guiding portion 30 . Further, for the convenience of assembly, the second guide part 40 is axially opposite to the guide part 30 . That is, the second guiding portion 40 is aligned with the guiding portion 30 along the axial direction of the terminal body 10 . Specifically, the second guiding portion 40 extends from the axial direction of the terminal body 10 to the rear end 10b of the terminal body 10 . In order to further prevent the connecting terminal 101 from rotating relative to the supporting shell 200 , a pair of side walls 42 , 42 b of the guiding portion 40 can be circumferentially blocked with the supporting shell 200 . Correspondingly, the second guide portion 40 can be circumferentially blocked with the corresponding supporting shell 200 , so as to further enhance the stable holding performance of the connecting terminal 101 relative to the supporting shell 200 . In order to facilitate manufacture, in this embodiment, the second guiding portion 40 is a stamping structure. That is, the guide portion 40 is recessed from the inner surface of the lumen wall 12 and protrudes from the outer surface of the lumen wall 12 .

In order to improve the overall stability of the connection terminal 101 , in this embodiment, the connection terminal 101 is one piece. Correspondingly, the connecting terminal 101 is manufactured from a whole metal plate. Preferably, the connecting terminal 101 is a plate punching part. In order to improve electrical conductivity, in this embodiment, the metal plate may be a copper plate. In order to make the performance of each part of the connecting terminal 101 consistent, the thickness of the metal plate is uniform. Optionally, the connecting terminal 101 is a round female terminal. That is, the outer peripheral surface of the connecting terminal 101 has a peripheral surface. Correspondingly, the terminal body 10 is in the shape of a round tube. The connection terminal 101 can be mated and plugged with the male terminal. Further, the connecting terminal 101 is used for electrical connection of large current inside the electric vehicle. That is to say, the connecting terminal 101 is a connecting terminal capable of transmitting large current inside the electric vehicle. If there is no special description, the "high current" that appears in the utility model can be a current with a current intensity of 20-85 amperes.

Embodiment two:

Referring to FIG. 4 , the present invention also provides an electrical connection assembly 201 . The electrical connection assembly 201 includes the aforementioned pair of connection terminals 101 and the support case 200 . The supporting shell 200 is used to support and hold the connecting terminal 101 and is assembled with the connecting terminal 101 .

The supporting shell 200 includes a shell body 220 . The shell body 220 has a cavity wall 221 . The cavity walls 221 define a cavity 223 . The accommodating cavity 223 is used for accommodating corresponding connecting terminals 101 . The specific shape and structure of the accommodating cavity 223 only need to be able to accommodate the corresponding connecting terminal 101 . The cavity wall 221 is formed with a front end 220a and a rear end 220b in the axial direction. In this embodiment, the front end 220 and the rear end 220b of the cavity wall 221 are the front end and the rear end of the shell body 220 . In order to facilitate matching and assembling, in this embodiment, the accommodating cavity 223 penetrates along the axial direction of the shell body 220 to form a through cavity. That is, the accommodating cavity 223 is in the shape of a lumen.

In order to matingly hold the connection terminals 101 , the inner surface 221 a of the cavity wall 221 is provided with a mating holding portion 240 . The mating retaining portion 240 is used to axially guide and cooperate with the guide portion 30 of the connecting terminal 101 , that is to constrain the axial installation direction of the connecting terminal 101 . The specific shape and structure of the mating holding portion 240 is sufficient as long as it can hold the corresponding guiding portion 30 . In this embodiment, in order to facilitate manufacture and form a stable position-limiting fit, the matching holding portion 240 is a position-limiting groove. The limiting groove is formed by being recessed from the inner surface 221 a of the cavity wall 221 . The limiting slot is extended along the axial direction of the housing body 220 . In this embodiment, the limiting groove can accommodate the guide part 30 and the second guide part 40 at the same time. Correspondingly, the limiting groove has a pair of groove side walls. The pair of sidewalls of the groove can block and cooperate with the guide portion 30 in a circumferential direction, so as to prevent the connecting terminal 101 from rotating relative to the supporting housing 200 . Further, the pair of groove walls can block and cooperate with the second guide portion 40 in a circumferential direction, so as to prevent the connecting terminal 101 from rotating relative to the supporting shell 200 .

As another implementation, the mating holding portion 240 may be a limiting rib (not shown in the figure). Correspondingly, the guide portion may be a radially recessed structure (not shown in the figure) such as a guide groove. The guide groove is recessed from the outer peripheral surface 12 a of the terminal body 10 . The guide groove extends along the axial direction of the terminal body 10 . Further, the second guiding portion may also be a second guiding groove. More specifically, the second guide groove may be communicated with the guide groove. The limiting rib can extend into the guiding groove, so as to guide the axial installation direction of the connecting terminal 101 and prevent the connecting terminal 101 from rotating in the circumferential direction.

In order to further stably hold the connecting terminal 101 , the supporting shell 200 further includes a blocking portion 260 . The blocking portion 260 is disposed at the front end of the shell body 220 . Specifically, the blocking portion 260 is disposed on the front end 220a of the cavity wall 221 . The blocking portion 260 only needs to be able to block fit with the connection terminal 101 to prevent the connection terminal 101 from escaping from the accommodating cavity 223 . Specifically, the blocking portion 260 protrudes radially from the inner surface of the cavity wall 221 , and can axially block and cooperate with the front end 10 a of the terminal body 10 . In order to further improve the stable blocking performance of the blocking portion 260 , the blocking portion 260 extends from the cavity wall 221 in a closed loop shape.

Correspondingly, the connection terminal 101 is inserted into the accommodating cavity 223 from the rear end 10 b of the terminal body 10 toward the front end 10 a. The blocking portion 260 can axially block fit with the front end 10a of the terminal body 10 to prevent the connecting terminal 101 from moving forward out of the accommodating cavity 223 .

The assembling relationship between the connecting terminal 101 and the supporting shell 200 will be described in detail below: the front end 10 a of the terminal body 10 is inserted from the rear end of the accommodating cavity 223 of the supporting shell 200 . The front end 10 a of the terminal body 10 can axially block fit with the blocking portion 260 of the supporting housing 200 . The connecting terminal 101 can axially block fit with the below-mentioned back-stop portion 280 of the supporting shell 200 . The guiding part 30 extends into the matching guiding part 240 which is a limiting groove, and can move to a preset position along the matching guiding part 240 . Correspondingly, the second guiding portion 40 extends into the mating guiding portion 240 . The guide part 30 and the second guide part 40 can cooperate with the rotation blocking of the mating guide part 240 , so as to prevent the connection terminal 101 from rotating relative to the supporting shell 200 .

Embodiment three:

Referring to FIG. 5 , the present invention provides an electrical connector assembly 301 . The electrical connector assembly 301 is electrically connected to the assembly 201 and a mating connector (not shown in the figure).

The mating connector includes mating terminals 302 . The mating terminal 302 axially extends into the accommodating cavity 223 of the supporting shell 200 , and is electrically connected to the connecting terminal 101 . Preferably, one end of the mating terminal 302 extends to be inserted into the lumen 14 of the connection terminal 101 and is electrically connected to the lumen wall 12 . The specific specifications and shapes of the mating terminals 302 are selected according to requirements. According to requirements, the mating connector further includes a mating housing (not shown in the figure). The mating housing is used to support the mating terminal 302 . It is easily conceivable that the specific shape and structure of the mating housing only need to be able to support the mating terminal 302 .

Embodiment four:

Please refer to FIG. 6 and FIG. 7 , the present invention provides another connecting terminal 401 . Different from the connection terminal 101 in the first embodiment, the connection terminal 401 includes a structure that matches with the matching supporting shell 200 .

The connection terminal 401 includes a terminal body 410 . The terminal body 410 has a lumen wall 412 . The lumen wall 412 defines a lumen 414 . An axial retaining portion 430 is disposed on the lumen wall 412 . The axial retaining portion 430 is used to block fit with the supporting shell 200 to prevent the connecting terminal 401 from moving relative to the supporting shell 200 . The axial retaining portion 430 may be any structure capable of achieving blocking fit. The axial holding portion 430 is a protruding blocking structure such as a boss or a cantilever. The axial holding portion 430 may also be a holding structure such as a groove. In this embodiment, the axial retaining portion 430 is a concave portion radially inward from the outer peripheral surface 412 a of the terminal body 410 . That is, in the radial direction along the terminal body 410 , the axial holding portion 430 is a concave structure extending inward from the outer peripheral surface 412 a. Preferably, the axial retaining portion 430 includes a retaining hole 432 . The retaining hole 432 is surrounded by a retaining hole wall 434 . When the blocking portion 260 of the supporting shell 200 radially extends into the holding hole 432 , the holding hole wall 434 can axially block and cooperate with the blocking portion 260 .

In order to further facilitate the installation of the lower insulating protection member 500 into the lumen 414 of the connecting terminal 401 . The holding hole 432 is a through hole. That is, the retaining hole 432 is disposed through the lumen wall 412 . Correspondingly, the retaining hole 432 communicates with the lumen 414 . Specifically, the blocking portion 260 of the supporting shell 200 extends from the lumen 414 and extends inwardly into the holding hole 432 . The mounting feet 515 of the insulating protection member 500 described below extend from the lumen 414 to the holding holes 432 . The shape of the retaining hole 432 is selected according to requirements, as long as the corresponding axial blocking can be realized. In this embodiment, in order to facilitate mating and assembling, the retaining hole 432 is approximately a semicircular hole or a letter “D” shaped hole.

In order to stably assemble the terminal protective cover 202 described below on the supporting shell 200 , a limiting hole 450 is provided on the outer peripheral surface of the lumen wall 412 of the connecting terminal 401 . The limiting hole 450 can axially block fit with the terminal protection sleeve 202 . The limiting hole 450 may be a blind hole. In this embodiment, in order to fully improve the position-limiting and maintaining performance, the position-limiting hole 450 is a through hole. Correspondingly, the limiting hole 450 extends from the outer peripheral surface of the lumen wall 412 through the inner peripheral surface 412b and communicates with the lumen 414 . The specific shape of the limiting hole 450 only needs to be able to achieve corresponding blocking. In this embodiment, in order to improve the performance of the position-limiting retention, a pair of position-limiting holes 450, 450b are arranged opposite to each other, and are rectangular holes.

In order to further improve the stable assembly performance of the connecting terminal 401 and the support housing 200 , the terminal body 410 of the connecting terminal 401 can axially block fit with the aforementioned secondary lock 300 . Correspondingly, the rear end 410b of the terminal body 410 is in blocking fit with the secondary lock 300 . In order to improve the barrier fit between the connecting terminal 401 and the secondary lock 300 , a limiting notch 436 is provided on the terminal body 410 of the connecting terminal 401 . The limit notch 436 is surrounded by a limit notch wall 438 and can contact and block the secondary lock 300 . Correspondingly, the limiting notch 436 is formed with an axial opening, so as to facilitate the locking portion 320 of the secondary lock 300 to be axially accommodated in the limiting notch 436 . Correspondingly, the limiting notch 436 serves as a preferred embodiment of the axial retaining portion 430 . Alternatively, the limiting notch 436 is a partial structure of the axial retaining portion 430 . That is, the axial retaining portion 430 includes a limiting notch 436 . Optionally, the limiting notch wall 438 includes an axial limiting wall 438a. The axial limiting wall 438a is used for axial blocking cooperation with the secondary lock 200 . Specifically, the axial limiting wall 438a prevents the secondary lock 200 from moving axially forward. Optionally, the limiting notch wall 438 includes a circumferential limiting wall 438b. The circumferential limiting wall 438 b is used to prevent the connecting terminal 401 from rotating relative to the supporting shell 200 . That is to say, the circumferential limiting wall 438 b can cooperate with the connecting terminal 401 in circumferential blocking. Specifically, a pair of circumferential limiting walls 438b are arranged facing each other, and are connected with the axial limiting walls 438a to enclose a letter "U"-shaped gap.

Embodiment five:

Please refer to FIG. 8 to FIG. 10 , the present invention provides another electrical connection assembly 501 . The electrical connection assembly 501 includes the aforementioned supporting shell 200 and the aforementioned connecting terminals 401 .

The matching relationship between the connecting terminal 401 and the support housing 200 will be specifically described below: the terminal body 410 extends into the lumen 414 . Correspondingly, the anti-retraction portion 280 extends from the lumen 414 into the holding hole 432, and axially blocks and cooperates with the holding hole wall 434, so as to prevent the connecting terminal 401 from moving relative to the support. The housing 200 moves axially. Correspondingly, the retaining hole 432 is equivalent to the first locking structure to prevent the connection terminal 401 from withdrawing from the accommodating cavity 223 .

In order to further facilitate the stable holding of the connecting terminal 401 , the cavity wall 221 is provided with a mounting hole 290 . The installation hole 290 is used to accommodate the secondary lock 300 for axially blocking the connection terminal 101 described below. In order to facilitate the assembly of the secondary lock 300 , the installation hole 290 radially penetrates the lumen wall 221 to form a through hole. Correspondingly, the installation hole 290 communicates with the accommodating cavity 223 .

In order to securely hold the secondary lock 300 described below, the cavity wall 221 is provided with a snap fit portion 295 . The snap fit portion 295 is used for snap fit with the secondary lock 300 . The snap fit portion 295 can be any structure that snap fits with the snap fit of the secondary lock 300 . For example, the clamping matching portion 295 is a clamping cavity or a clamping groove. In this embodiment, the snap fit portion 295 is a step capable of snapping and radially blocking fit. The snap fit portion 295 can radially snap fit with the secondary lock 200 so as to prevent the secondary lock 200 from withdrawing from the installation hole 290 . In this embodiment, a pair of snap fit portions 295 , 295 b radially snap fit with a corresponding pair of buckles 340 , 340 b.

In order to further stably hold the connecting terminal 401 , the support case 200 further includes a backstop portion 280 . The stop portion 280 radially protrudes from the inner surface 221 a of the cavity wall 221 . The anti-retraction portion 280 can axially block and cooperate with the connection terminal 401 to prevent the connection terminal 401 from withdrawing from the accommodating cavity 223 . Specifically, the anti-retraction portion 280 can axially block fit with the rear end 410 b of the terminal body 410 to prevent the connecting terminal 101 from withdrawing from the accommodating cavity 223 . The backstop portion 280 can be any radially protruding structure that can achieve axial blocking. In order to facilitate the anti-retraction part 280 to realize the blocking fit with the corresponding connection terminal 101 , the anti-retraction part 280 is a buckle. To further facilitate the assembly of the connecting terminal 401, the anti-retraction portion 280 is an undercut. Further, the anti-retraction portion 280 extends into the retaining hole 432 and can block fit with the retaining hole wall 434 to prevent the connecting terminal 401 from withdrawing from the supporting shell 200 .

The anti-retraction portion 280 can axially block fit with the rear end 410 b of the terminal body 410 to prevent the connecting terminal 401 from retreating backward out of the accommodating cavity 223 . Further, the blocking portion 260 and the anti-retraction portion 280 are respectively located at the front and rear ends of the matching guide portion 240 . That is, the above-mentioned blocking portion 260 , the above-mentioned matching guide portion 240 , and the above-mentioned anti-retraction portion 280 are distributed in sequence along the axial direction.

The electrical connection assembly 501 also includes a terminal protection sleeve 202 . The terminal protection cover 202 is disposed on the supporting shell 200 . Specifically, the terminal protection cover 202 has a mounting protrusion 252 . The installation protrusion 252 extends into the limiting hole 450 . In this embodiment, the pair of installation protrusions 252, 252b extend into the corresponding limiting holes 450, 450b, so as to realize an integrated assembly. More specifically, the protective terminal cover 202 extends into the accommodating cavity 223 of the supporting shell 200 . The terminal protection cover 202 is used to further protect the connection terminal 401 and improve performance such as insulation protection.

In order to further securely hold the connecting terminal 401 , the electrical connector assembly 301 further includes a secondary lock 300 . The secondary lock 300 is mounted on the support housing 200 and axially blocks and cooperates with the connection terminal 101 to prevent the connection terminal 101 from withdrawing backward from the accommodating cavity 223 . Specifically, the secondary lock 200 extends into the mounting hole 290 of the supporting shell 200 and is engaged with the rear end 10 b of the terminal body 10 in a blocking manner. The secondary lock 300 includes a locking portion 320 . The locking portion 320 protrudes radially, and is axially opposite to the rear end 10b of the terminal body 10 for blocking engagement.

In order to improve the stability of the secondary lock 300 , the secondary lock 300 further includes a buckle 340 . The buckle 340 is radially connected to the support housing 200 to prevent the secondary lock 300 from withdrawing from the installation hole 290 . As a modification, the secondary lock 300 can be plugged or bonded with the supporting shell 200 . In order to enhance the stability performance, a pair of buckles 340, 340b is engaged with a corresponding pair of snap-fitting parts 295, 295b.

The matching relationship between the connecting terminal 401 and the secondary lock 300 will be described in detail below: the locking portion 320 of the secondary lock 300 passes through the mounting hole 290 of the supporting shell 200 and extends to the limit within the bit gap 436 . The locking portion 320 can axially block and cooperate with the limiting notch wall 438 . Correspondingly, the limiting notch 436 forms a second locking cooperation relationship with the secondary lock 300 , so as to further enhance the performance of stably maintaining the connection terminal 401 as one.

In order to improve safety performance, the electrical connection assembly 501 includes an insulating protection member 500 . The insulating protection member 500 is constructed of electrical insulating material. Preferably, the insulating protection member 500 is made of rubber material. The insulating protection member 500 extends into the lumen 414 to avoid potential safety hazards caused by inserting parts of human fingers into the lumen 414 . The insulating shield 500 extends axially and extends to the front end of the lumen 414 . Specifically, the insulating protection member 500 has mounting feet 515 . The mounting feet 515 radially extend to the holding holes 432 of the connecting terminals 401 . Specifically, the mounting feet 515 extend from the lumen 414 to the holding holes 432 . In order to further enhance the stable holding performance of the insulating protection member 500 , in this embodiment, the pair of mounting legs 515 , 515 b respectively extend in opposite directions to be inserted into the corresponding pair of holding holes 432 , 432 b. The insulating guard 500 also has a guard blocking arm 530 . The protection blocking arm 530 extends continuously in the axial direction. The protective blocking arm 530 can extend to the front end of the lumen 414 . The protective blocking arm 530 can be used to directly contact with, for example, a human finger, so as to avoid false contact with the finger connection terminal 401 .

As another embodiment, the inner peripheral surface 412a of the cavity wall 412 is provided with a corresponding guard installation hole 435 . The mounting hole 435 of the protective element is used for accommodating the mounting feet 515 of the insulating protective element 500 . That is to say, the mounting holes 435 of the protective element and the holding holes 432 are respectively staggered. In this embodiment, the holding hole 432 is a through hole, which can accommodate the mounting foot 515 . That is, the guard mounting hole 435 is connected to the holding hole 432 to form a through hole. Correspondingly, the guard mounting hole 435b communicates with the holding hole 432b to form a through hole.

Embodiment six:

Referring to FIG. 11 , the present invention provides an electrical connector assembly 503 . The utility model provides an electrical connector assembly 503 . The electrical connector assembly 503 includes the aforementioned electrical connection assembly 501 and the mating terminal 302 .

The mating terminal 302 axially extends into the accommodating cavity 223 of the supporting shell 200 , and contacts and electrically connects with the connecting terminal 401 . Preferably, one end of the mating terminal 302 extends to be inserted into the lumen 414 of the connection terminal 401 and is electrically connected to the lumen wall 412 . The specific specifications and shapes of the mating terminals 302 are selected according to requirements.

Embodiment seven:

Please refer to FIG. 12 and FIG. 13 , the present invention provides another connecting terminal 601 . Different from the foregoing embodiments, the connection terminal 601 further includes a holding structure for holding the contact connector 700 described below.

The connection terminal 601 includes a lumen wall 612 . The lumen wall 612 may be a part of the terminal body 610 . The terminal body 610 serves as the main structure for the connection terminal 601 to realize electrical connection. The lumen wall 612 defines a lumen 614 . The lumen 614 is used to accommodate the contact connector 700 . The connection terminal 601 has an axial extension direction. Correspondingly, the lumen wall 612 is axially extended. The lumen wall 612 is axially formed with a front end 610a and a rear end 610b. Unless otherwise specified, "front and rear" appearing in the utility model are relative concepts. Specifically, the end where the connecting terminal 601 and the mating terminal 302 are first contacted and mated is the front end.

In order to facilitate the stable holding of the contact connector 700 , the connecting terminal 601 further includes an installation holding portion 630 . The mounting and maintaining portion 630 is disposed on the inner surface 612b of the lumen wall 612 . Accordingly, the lumen wall 612 has an outer surface 612a. The installation and holding portion 630 is used for axial blocking cooperation with the contact connector 700 . The specific shape and structure of the installation and holding portion 630 are sufficient as long as the corresponding contact connector 700 can be firmly held in the lumen 614 . For example, the installation and holding part 630 may be a buckle, so as to snap fit with the contact connector 700 . As a preferred embodiment, the installation and holding portion 630 may be a concave structure such as a limiting groove (not shown in the figure). Correspondingly, the contact connector 700 may be provided with a protruding structure (not shown in the figure). The protruding structure radially extends into the recessed structure, so that the contact connector 700 achieves axial blocking with the connection terminal 601 . Further, the radial dimension of the contact connector 700 can be reduced, so that the protruding structure can be easily installed into the recessed structure, and when the elastic deformation structure of the contact connector 700 is restored to deformation, the protruding structure can be Cooperate with the axial blocking of the concave structure.

For the convenience of manufacture, in this embodiment, the mounting and maintaining portion 30 is a protruding structure protruding from the inner surface 612b of the lumen wall 612 . That is to say, the installation and holding portion 630 protrudes radially so as to achieve an axial blocking fit with the contact connector 700 . The mounting and maintaining portion 630 may be a protruding structure such as a boss, a rib, or the like.

In order to further improve the axial blocking fit performance of the connection terminal 601 to the corresponding contact connector 700 , the installation and holding portion 630 includes a first protruding portion 632 and a second protruding portion 634 . The first protruding portion 632 and the second protruding portion 634 are arranged at intervals along the axial direction of the connection terminal 601 . Correspondingly, the space between the first protruding portion 632 and the second protruding portion 634 is used to accommodate the contact connector 700 . To fully save space, the first protruding portion 632 extends axially to be flush with the front end 610 a of the lumen wall 612 . In order to improve the position-limiting and holding performance of the mounting and maintaining portion 630 , the mounting and maintaining portion 630 and the contact connector 700 are surface-to-surface contact barriers. Specifically, the first protruding portion 632 has a first blocking surface 636 . The second protruding portion 634 has a second blocking surface 638 . The first blocking surface 636 is axially opposite to the second blocking surface 638 and spaced apart from each other. Preferably, the first blocking surface 636 is a plane; the second blocking surface 638 is a plane.

In order to further improve the holding performance of the connecting terminal 601 to the corresponding contact connector 700 , a plurality of installation and holding portions 630 are distributed along the circumferential direction of the connecting terminal 601 . Preferably, a plurality of the mounting and maintaining portions 630 are evenly distributed along the circumferential direction of the connecting terminal 601 . Correspondingly, a plurality of the first protruding portions 632 are evenly distributed along the circumferential direction of the connecting terminal 601 . A plurality of the second protruding portions 634 are evenly distributed along the circumferential direction of the connecting terminal 601 . The specific number of the first protrusions 632 can be selected according to needs, and can be one, two, three, four or more. The specific number of the second protrusions 634 can be selected according to needs, and can be one, two, three, four or more. In this embodiment, the six first protrusions 632 are evenly spaced in a circle in the circumferential direction. The six second protrusions 634 are evenly spaced in a circle in the circumferential direction. The first protruding portion 632 and the second protruding portion 634 may be axially opposite to each other.

The mounting and maintaining portion 630 can be manufactured in any manner. In order to facilitate manufacture, in this embodiment, the stamping structure of the mounting and holding portion 630 is used. Correspondingly, the mounting and maintaining portion 630 protrudes from the inner surface 612 b of the lumen wall 612 , and forms a depression on the outer surface 612 a of the lumen wall 612 . Specifically, the first protruding portion 632 and the second protruding portion 634 have stamping structures.

In order to improve the stability of the connection terminal 601, the connection terminal 601 is one piece. In order to facilitate manufacturing and save costs, the connecting terminal 601 is a stamped integral part.

Embodiment eight:

Referring to FIG. 14 to FIG. 16 , the present invention provides another electrical connection assembly 701 . The electrical connection assembly 701 includes the connection terminal 601 and the contact connector 700 described above.

Please also refer to the following FIG. 17 , the contact connector 700 is used for contact and electrical connection with the connection terminal 601 and the mating terminal 302 respectively. The contact connector 700 extends into the lumen 614 . The contact connector 700 is in axial blocking fit with the installation holding part 630 . The contact connector 700 includes a mating connection body 710 . The mating connection body 710 has a front end surface 710a and a rear end surface 710b. Specifically, the front end surface 710 a of the mating connection body 710 can axially block fit with the first protruding portion 632 . The rear end surface 710 b of the mating connection body 710 can axially block fit with the second protruding portion 634 . That is, the mating connection body 710 is disposed between the first protruding portion 632 and the second protruding portion 634 . More specifically, the first blocking surface 636 of the first protruding portion 632 can axially block fit with the front end surface 710 a of the contact connector 700 . The second blocking surface 638 of the second protruding portion 634 can axially block fit with the rear end surface 710 b of the contact connector 700 . As a preferred embodiment, the front end surface 710a of the contact connector 700 is a plane; the rear end surface 710b of the contact connector 700 is a plane. The contact connector 700 is an independent integral part. That is, the contact connector 700 is an integral part that is separated from other components and formed independently. The contact connector 700 is detachably accommodated in the lumen 614 .

In order to facilitate assembly, preferably, the contact connector 700 is an elastically deformable structure whose radial size can be reduced, so that it can be conveniently installed between the first protruding portion 632 and the second protruding portion 634 . The contact connector 700 extends along the circumference of the connection terminal 601 . More specifically, when the contact connector 700 is in a free state without external force, the radial dimension of the contact connector 700 is greater than or equal to the radial dimension of the lumen 614, thereby lifting the contact connector 700 The stable contact with the lumen wall 612 improves the stability of the axial blocking between the contact connecting member 700 and the mounting and maintaining portion 630 .

The contact connector 700 has one or more elastic arms 730 . The elastic arm 730 can radially butt against the lumen wall 612 of the connection terminal 601 and the mating terminal 302 respectively. Correspondingly, the contact connector 700 can form a multi-point electrical contact.

Embodiment nine:

Please refer to FIG. 17 , the present invention provides another electrical connection assembly 703 . Compared with the electrical connection assembly 701 described above, the electrical connection assembly 703 of this embodiment further includes the support case 200 described above. Correspondingly, the connection terminal 601 extends into the accommodating cavity 223 .

Embodiment ten:

Please refer to FIG. 18 , the present invention also provides an electrical connector assembly 705 . The electrical connector assembly 705 includes the aforementioned electrical connection assembly 701 and the aforementioned mating terminal 302 . The mating terminal 302 is in electrical contact with the connecting terminal 601 .

Please refer to FIG. 17 and FIG. 18 together. The matching relationship between the connection terminal 601 and the mating terminal 302 will be described in detail below: the contact connector 700 has a mating connection body 710 . The mating connecting body 710 extends into the lumen 614 of the connecting terminal 601 . And the outer surface 712 a of the mating connection body 710 is in contact with the lumen wall 612 for electrical connection. The mating connection body 710 has a mating connection lumen 714 . The mating connection lumen 714 is axially extended. The mating terminal 302 extends into the mating connection lumen 714 and contacts and electrically connects with the inner surface 712 b of the mating connection body 710 .

Embodiment eleven:

Please refer to FIG. 19 , the utility model provides another connection terminal 801 . Compared with the method of cutting, the connection terminal 801 is a stamped integral part, which can save material, facilitate manufacturing and save cost.

The connecting terminal 801 has a terminal body 810 . The terminal body 810 has a lumen wall 812 . The lumen wall 812 defines a lumen 814 . The connecting terminal 801 is formed into one piece by stamping. Preferably, in order to fully save material and facilitate manufacturing, the connecting terminal 801 is formed by punching a whole metal plate. In order to make the connecting terminal 801 have uniform electrical conductivity and mechanical strength, the thickness of the metal plate is uniform. That is to say, the connecting terminal 801 is made of a whole piece of metal plate with uniform thickness. Correspondingly, the thickness of the lumen wall 812 is uniform.

The connection terminal 801 also includes an external connection portion 830 . The external connecting portion 830 is continuously extended in the axial direction from the rear end of the terminal body 810 . The external connection portion 830 is used for connecting other electrical connection structures. In this embodiment, in order to facilitate electrical connection with external elements (not shown in the figure) such as flexible wires, the external connecting portion 830 includes a pair of connecting arms 832, 832b. The pair of connecting arms 832 , 832 b protrudes radially and surrounds a guiding groove 834 .

Correspondingly, the lumen 814 is formed by bending a flat metal plate. Preferably, in order to improve the stability of the lumen 814 , the lumen wall 812 has a first seam wall 816 and a second seam wall 818 disposed opposite to each other. The first seam wall 816 and the second seam wall 818 are located opposite to each other in the circumferential direction and surround the lumen 814 . A limiting notch 840 is disposed on the first seam wall 816 . As a modification, the limiting notch 840 can be replaced by, for example, a limiting groove. A holding arm 850 is disposed on the first seam wall 816 . The retaining arm 850 extends into the limiting notch 840 so as to axially block and cooperate with each other. Preferably, in order to enhance the performance of axial blocking fit, the retaining arm 850 is in the shape of an inverted trapezoid. That is, the shorter lower base of the inverted trapezoid is disposed on the first seam wall 816 . Correspondingly, the opening width of the limiting notch 840 gradually decreases.

Embodiment 12:

Please refer to FIG. 20 , the utility model also provides an electrical connection assembly 803 . The electrical connection assembly 803 includes the aforementioned supporting shell 200 and the aforementioned connecting terminals 801 . Correspondingly, the connecting terminal 801 extends into the accommodating cavity 223 of the supporting shell 200 .

Embodiment thirteen:

Please continue to refer to FIG. 20 , the utility model also provides an electrical connector 805 . The electrical connector assembly 705 includes the aforementioned electrical connection assembly 701 and the aforementioned mating terminal 302 . The mating terminal 302 is in electrical contact with the connecting terminal 601 .

The matching relationship between the connection terminal 801 and the mating terminal 302 will be described in detail below: the contact connector 700 has a mating connection body 710 . The mating connecting body 710 extends into the lumen 814 of the connecting terminal 801 . And the outer surface 712 a of the mating connection body 710 is in contact with the lumen wall 812 for electrical connection. The mating connection body 710 has a mating connection lumen 714 . The mating connection lumen 714 is axially extended. The mating terminal 302 extends into the mating connection lumen 714 and contacts and electrically connects with the inner surface 712 b of the mating connection body 710 . Further, in order to fully save space, the connecting terminal 302 has a socket cavity 314 . The insulation guard 500 has a guard barrier arm 530 . The protective blocking arm 530 is axially extended to block the insertion of human fingers. Correspondingly, the protection and blocking arm 530 extends into the insertion cavity 314 , thereby fully saving space.

It should be noted that in this utility model, such as "up, down", "left, right", "front, back", "one, other" etc. are relative orientation concepts, which are easy to understand by combining the drawings The relative spatial position of each component. Among them, the "axial direction" can be the length direction of the connecting terminal 101, 401, 601, 801, that is, the direction of assembly with the mating terminal 302; the "radial direction" is relatively perpendicular to the "axial direction"; the "circumferential direction" is It can refer to the direction around the "axis" or the circumferential direction.

The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Any modification, equivalent replacement or improvement within the spirit of the present utility model is covered by the claims of the present utility model. .

Claims (24)

1. a kind of connection terminal, which is characterized in that including：

Terminal body, the terminal body have axially extending direction；

The terminal body has wall of the lumen；The wall of the lumen surrounds a tube chamber；Axial direction of the tube chamber along the terminal body Be extended, for it is mating to matching terminal and be electrically connected to each other；And

The connection terminal is plate stamping part.

2. connection terminal according to claim 1, which is characterized in that further include：

Outer connection section, the outer connection section is extended from the terminal body is laterally consecutive, for connecting outer member.

3. connection terminal according to claim 1, which is characterized in that further include：

The peripheral surface in the terminal body is arranged in guide portion, the guide portion；

The guide portion is for guiding the connection terminal axially mounted to matching in shell.

4. connection terminal according to claim 1, which is characterized in that further include：

The peripheral surface in the terminal body is arranged in second guide portion, second guide portion, for circumferentially being hindered with to matching shell Gear cooperation.

5. connection terminal according to claim 1, which is characterized in that further include：

Portion is axially retained, the portion of axially retaining is the recessed portion to concave from the peripheral surface diameter of the terminal body；

When the terminal body is installed in the accommodating cavity with shell, the portion that axially retains can axially be hindered with to matching shell Gear cooperation.

6. connection terminal according to claim 5, it is characterised in that：

The portion of axially retaining includes retaining hole；

The retaining hole is surrounded by holding hole wall, and the holding hole wall can axially trap cooperation with to the stop portion with shell.

7. connection terminal according to claim 5, it is characterised in that：

The portion of axially retaining further includes spacing breach；The spacing breach is surrounded by spacing breach wall；

When secondary lock extends in the spacing breach, the spacing breach wall is used to axially trap cooperation with secondary lock.

8. connection terminal according to claim 1, which is characterized in that further include：

Maintaining part is installed, the installation maintaining part is provided projectingly on the inner surface of the wall of the lumen, is used for and is connected part Axially trap cooperation.

9. connection terminal according to claim 8, it is characterised in that：

The installation maintaining part includes the first protruding portion and the second protruding portion；

First protruding portion is arranged with the second protruding portion axially spaced-apart；

When to counter-connector it is axially mounted between first protruding portion and second protruding portion when, this is to counter-connector Cooperation can be axially trapped with first protruding portion and second protruding portion.

10. connection terminal according to claim 1, it is characterised in that：

The connection terminal is made of a block of metal plate punching press.

11. connection terminal according to claim 10, it is characterised in that：

The metallic plate has the first seam wall and the second seam wall；

The first seam wall is oppositely arranged with the second seam wall；

The first seam wall is provided with spacing breach or limiting slot；

The second seam wall has been provided projectingly retaining arm；

The retaining arm is along the circumferentially extending to the spacing breach or limiting slot of the connection terminal.

12. connection terminal according to claim 1, it is characterised in that：

The thickness uniformity of the wall of the lumen.

13. connection terminal according to claim 1, it is characterised in that：

The tube chamber is circular tube chamber.

14. connection terminal according to any one of claim 1 to 13, it is characterised in that：

The connection terminal is for large-current electric connection inside electric vehicle.

15. a kind of electrical connection module, which is characterized in that including：

Connection terminal according to any one of claim 1 to 14；And

Supporing shell, the supporing shell include chamber wall；The chamber wall surrounds an accommodating cavity；

The connection terminal extends in the accommodating cavity.

16. electrical connection module according to claim 15, it is characterised in that：

The chamber wall is being axially formed front end and rear end；

The front end of the chamber wall is provided with blocking portion；

The blocking portion is radially-inwardly provided projectingly；

The terminal body is being axially formed front bulkhead and aft bulkhead；

The front bulkhead of the terminal body can axially trap cooperation with the blocking portion.

17. electrical connection module according to claim 15, which is characterized in that further include：

Part is connected, the contact connectio part is accommodated in the tube chamber of the connection terminal；

The contact connectio part contacts electrical connection with the wall of the lumen, and for being electrically connected with to the contact of matching terminal.

18. electrical connection module according to claim 17, it is characterised in that：

The contact connectio part is independent integral piece, and is removably accommodated in the tube chamber of the connection terminal.

19. the electrical connection module according to any one of claim 15 to 18, which is characterized in that further include：

Insulating protector, the insulating protector are fixedly installed in the tube chamber, and extend the prominent tube chamber, are used for and human body Fingers blocks coordinate.

20. electrical connection module according to claim 19, it is characterised in that：

The insulating protector includes installation foot；

Protector mounting hole is provided on the inner wall of the wall of the lumen, for housing and coordinating the installation foot, by the insulation Protector is maintained at the intraluminal axial position.

21. electrical connection module according to claim 20, it is characterised in that：

It is provided with retaining hole on the outer wall of the wall of the lumen；

The retaining hole is surrounded by holding hole wall, and the holding hole wall can axially trap cooperation with the stop portion of supporing shell.

22. electrical connection module according to claim 21, it is characterised in that：

The retaining hole and the protector mounting hole are interconnected and form through-hole, for the connection terminal simultaneously with support Shell and the insulating protector axially trap cooperation.

23. electrical connection module according to claim 19, it is characterised in that：

The insulating protector further includes protection stop arm, and the protection stop arm extends to the front end of the tube chamber, for hindering Human finger is kept off to prevent human finger from being contactd by mistake with connection terminal.

24. a kind of electric coupler component, which is characterized in that including：

Electrical connection module according to any one of claim 15 to 23；And

To mating connector, described includes to matching terminal to mating connector；

It is described that matching terminal is extended in the tube chamber, and be electrically connected with the connection terminal.