WO2021114352A1

WO2021114352A1 - Housing structure of wiring terminal

Info

Publication number: WO2021114352A1
Application number: PCT/CN2019/126610
Authority: WO
Inventors: 饶小坡
Original assignee: 江门市创艺电器有限公司
Priority date: 2019-12-10
Filing date: 2019-12-19
Publication date: 2021-06-17
Also published as: CN211182572U

Abstract

A housing structure of a wiring terminal. The housing structure of the wiring terminal is composed of an integrally structured housing (1) and press cap (2). Once assembled, the housing (1) and press cap (2) form a fixed compact structure. A metal connector (4) is placed in an internal cavity, is limited and fixed thereby, and will only be deformed by an elastic piece under the action of pulling out the cap. Another fixing portion of the metal connector (4) is positioned and limited, and the composed housing structure can also achieve wire insertion/wire stripping actions, improve wiring stability, and improve the smoothness and pressing stability of the pull-out cap action, and may also define the positioning of a wire (3) after wiring.

Description

Shell structure of wiring terminal

Technical field

The utility model relates to the technical field of insulating fittings of a connecting terminal, in particular to a housing structure of a connecting terminal.

Background technique

As a connecting component of electronic components, electrical appliances, etc., the terminal can play the effect of wiring and energization, and realize a good connection function of the wiring energization. It is an important wiring component for the connection of electrical appliances and the connection between the terminal and the terminal. Some of the existing wiring terminals realize the functions of one-step wiring and one-step disconnection by the way of pulling out the cover to cooperate with the metal connector, which facilitates the wiring and disconnection. Generally, this type of terminal is composed of several major components, which are an insulating shell structure composed of a shell and a gland, a metal connector placed in the cavity of the shell structure, and a metal connector that penetrates into the cavity of the shell structure from the top of the shell. The general principle of the connecting piece contacting or pressing the metal connecting piece's cover is: the elastic piece of the metal connecting piece is pressed down by applying force on the pulling cover to form a certain gap with the fixed insert of the metal connecting piece, and the wire is inserted After the shell is in the gap, then the pull-out cover is reset. At this time, the elastic sheet clamps the wire and the fixed sheet at the top under the action of the elastic force to form a stable connection; when the wire is disconnected, only need to be pulled up Pulling out the cover applies force to the elastic sheet, and the elastic sheet no longer clamps the wire, which can realize the purpose of pulling out the wire to form a wire break. In principle, the metal connecting piece is fixed in the shell structure and the fixed part of the metal connecting piece cannot be displaced. Only the elastic sheet deforms under the action of pulling out the cover. At the same time, the pulling out part and the shell structure also form a coordinated installation. The structure not only plays the role of insulation, but also has the functions of limit metal connectors and limit pull cover, and also has functions such as improving the stability of the connection. The existing shell structure adopts the upper and lower shells to assemble together and the front and rear shells to assemble and other structural forms. The formed internal cavity is used as the installation position of the metal connector and serves as a limit function, so the shell structure has a very important role. , It will directly affect the stability and other performance of the metal connector wiring; and the existing shell structure still has many inferior products, which will lead to the low electrical conductivity of the overall terminal block, which will affect the quality of the wiring; and the existing shell The structure also does not have some solutions specifically designed for the structure of the metal connection piece to make the metal connection piece stable and compactly fixed in the shell, or there is no multi-point positioning of the force point of the metal connection piece to form a fixed installation structure; therefore, the current Some shell structures need to be improved.

Utility model content

The utility model aims to overcome the defects of the prior art, and aims to provide a housing structure of a terminal block. The housing structure of the terminal block is composed of an integrally structured housing and a gland, and the housing and the gland are assembled to form a compact and fixed The structure of the metal connector is placed in the internal cavity and fixed by its limit. Only the elastic sheet will deform when the cover is pulled out. The other fixed parts of the metal connector are positioned and restricted, and the shell structure is composed It can also realize the plug-in/off-wire function, improve the stability of the connection, improve the smoothness of the pull-out action and the stability of the pressing, and can also limit the positioning of the wire after the connection.

The technical solution adopted by the utility model to solve its technical problems is: a housing structure of a terminal block, which includes a housing and a gland, which are matched and installed and fixed with each other, and the housing and the gland are matched and installed to form an internal cavity and connect the wires with the wires. The effective metal connector is fixedly limited in the internal cavity, and the housing and the gland are of an integrated structure; the front end of the housing is provided with at least two sockets that allow the corresponding wires to be inserted into the internal cavity, and the back end It is a plug end smaller than the outer size of the shell; the top of the shell is a plug-in board assembly extending from the top of the socket to the rear of the shell, the plug-in board assembly includes at least two plug-in boards, one end of the plug-in board is fixed and integrated with the top of the plug-in port, The other end of the plug-in board is inserted into the gland to form installation and fixation. Between the sides of adjacent plug-in boards and between the outside of the plug-in board near the side of the housing and the outside of the housing, there are left covers that allow the terminal to be pulled out and inserted into the internal cavity. The inserting gap of the pull cover, the two sides of the insert plate are recessed with sliding grooves that are fitted with the rotating head of the pull cover; the bottom of the inserting port extends toward the inner cavity, and there is a fixed end of the elastic sheet for positioning and pressing the metal connector Positioning protruding head, the positioning protruding head and the bottom of the internal cavity form a positioning cavity groove, the fixed end of the elastic sheet of the metal connector is placed in the positioning cavity groove; the inner side of the gland is provided with the plug end of the housing for fitting installation Socket slot, the upper part of the gland is provided with an insert limit slot that allows the fixed insert on the top surface of the back of the metal connector to be inserted, and the gland is located below the insert limit slot with a tight metal connector back The metal surface positioning plate, the adjacent positioning plate and the side surface of the gland and the outermost positioning plate are formed with threading positioning slots corresponding to the threading holes on the back of the metal connector; the casing or/and the gland are provided for testing Test port for power connection.

The general structure of the metal connector and the pull-out cover that are configured to form an integral terminal with the shell structure is as follows: the metal connector includes a fixed insert that is arranged horizontally, and the bottom of the fixed insert extends downward to form an integral structure and is provided with a threading hole. Sheet, the bottom plate fixedly connected to the bottom of the threading sheet, the elastic body extending inward and upward at one end of the bottom plate to reach the top of the threading hole, the fixed insert and the threading sheet form a similar cross section with a shape similar to "7", the bottom plate and the elastic sheet Form a shape similar to "ゝ" in cross section. The pull-out cover consists of a handle and two pressing plates with a branched symmetrical structure extending downwards from the handle. The inner side of the two pressing plates is provided with a rotating head that slides into the slot of the plug-in board. The pull-out cover extends from the insertion gap of the pull-out cover. After entering the internal cavity, the rotating head is put into the chute, the bottom of the pressing plate is attached to the top surface of the elastic sheet or a force less than the reset elasticity of the elastic sheet is applied to the elastic sheet (the elastic sheet is not deformed), and the handle of pulling the cover lies flat Or slightly lift up on the front end of the shell and protrude a small part. After the pull-out cover is installed in the housing structure, when the pull-out cover is pulled up, the pressing end of the pull-out cover presses the elastic sheet of the metal connector, and when the pull-out cover is pulled up to 90 degrees or more, the pressing end of the pull-out cover presses The elastic sheet reaches the maximum deformation amplitude, forming a good wiring effect; if the dial lift is less than 90 degrees, it is easy to be opened by the elastic sheet under the reset force and the dial cover is unsuccessfully opened due to the small lift angle and insufficient pressure. To the initial state, or the distance that the elastic sheet is pressed down is small, which leads to difficulties in wiring.

Further, the plug end protrudes from the side and bottom of the housing in the rear direction and forms a secondary step with the side and bottom of the housing, the plug end of the housing is located on the inside, and the side and bottom of the housing are located on the outside; the socket groove It is composed of a side slot that fits into the side of the plug end and a bottom slot that fits into the bottom of the plug end; the upper part of the gland is provided with an insert board slot that matches the insert end of the insert board; The installation and fixation of the plug end and the socket slot and the installation and fixation of the plug-in board and the plug-in board slot are fixed by bonding or ultrasonic welding, or by buckle assembly.

Further, the buckle assembly includes a protruding bottom side card protruding head provided on the bottom surface of the plug end, a top side protruding card protruding head provided on the top surface of the plug-in board, and a bottom side card protruding provided at the bottom of the bottom slot and the bottom side card protruding. The bottom card notch fastened by the head fitting, and the top card slot provided on the top of the plug-in board slot and fastened with the top card protrusions can also include a side card protrusion and a device provided on the side of the plug end. The side card slot on the side slot that is fastened with the side card protrusion; the insertion end of the card with the top card protrusion is a card plug and extends from the bottom of the card, the card plug After being inserted into the plug-in board slot, the plug-in board and the pressing cover form a butt-joint installation and fixation, and each plug-in board plug corresponds to its respective plug-in board slot to form a fixed fastening installation.

Further, the positioning protrusions are triangular, trapezoidal, or diamond-shaped so that the space of the positioning cavity is gradually narrowed from the outside to the inside.

Further, the positioning plate presses against the metal surface between the adjacent threading holes of the metal connector, the threading holes and the threading positioning grooves are arranged to face each other, and the positioning grooves are separated by the positioning plate.

Further, the slot of the threading positioning slot is larger than the hole of the threading hole or smaller than the hole of the threading hole, and the hole of the threading hole and the slot of the threading positioning slot are both larger than the cross-sectional diameter of the metal end of the wire.

Further, the two sides of the insert limiting slot have protruding arc-shaped protrusions extending toward the top.

Further, the test port is arranged at the rear end of the gland.

Alternatively, the front end of the casing and the rear end of the gland are respectively provided with a casing test port and a gland test port.

Further, the four corners of the housing and the gland are rounded and rectangular after being installed and buckled.

In summary, the housing structure of the connecting terminal of the present invention is composed of an integrated housing and a gland. The housing and the gland are assembled to form a fixed and compact structure, and the metal connector is placed in the internal cavity and limited by it. Position fixation, only the elastic sheet deforms under the action of pulling out the cover, other fixed parts of the metal connector are positioned and restricted, and the composed shell structure can also realize the plug-in/off-line function and improve the stability of the wiring. The smoothness and pressing stability of the pull-out action are improved, and the positioning of the wire after wiring can be limited.

Description of the drawings

Fig. 1 is an exploded schematic diagram of a housing structure of a terminal connector according to Embodiment 1 of the present invention;

Figure 2 is a front view of the housing;

Figure 3 is a rear view of the housing;

Figure 4 is a top view of the housing;

Figure 5 is a bottom view of the housing;

Figure 6 is a perspective view of the housing;

Figure 7 is a perspective view of the housing in another direction;

Figure 8 is a front view of the gland;

Figure 9 is a rear view of the gland;

Figure 10 is a top view of the gland;

Figure 11 is a bottom view of the gland;

Figure 12 is a perspective view of the gland;

Figure 13 is a perspective view of the gland from another direction;

Figure 14 is a partial cross-sectional view of the gland and the metal connector after the installation of the gland with the slot of the threading positioning slot smaller than the hole of the threading hole;

Figure 15 is a partial cross-sectional view of the gland and the metal connector after the installation of the gland with the slot of the threading positioning slot larger than the hole of the threading hole;

Figure 16 is a schematic diagram of the overall connection terminal;

Figure 17 is a cross-sectional view of the integral terminal;

Figure 18 is a cross-sectional view when the terminal and the wire are not connected;

Figure 19 is a cross-sectional view of the wiring terminal when the cover is pulled up and the wire is not connected;

Figure 20 is a cross-sectional view of the terminal and the wire after being connected;

Figure 21 is a cross-sectional view of the wiring terminal and the wire after being disconnected;

Figure 22 is a schematic diagram of the housing adopting a three-position wiring structure;

Figure 23 is a schematic diagram of the gland adopting a three-position wiring structure;

Figure 24 is a schematic diagram of the housing adopting a five-position wiring structure;

Figure 25 is a schematic diagram of a five-position wiring structure for the gland;

Figure 26 is a schematic diagram of the housing adopting a two-position wiring structure and an ultrasonic welding method;

Figure 27 is a schematic diagram of a two-position wiring structure and an ultrasonic welding method used for the gland;

Figure 28 is a schematic diagram of the housing adopting a three-position wiring structure and an ultrasonic welding method;

Figure 29 is a schematic diagram of the gland adopts a three-position wiring structure and an ultrasonic welding method;

Figure 30 is a schematic diagram of the housing adopting a five-position wiring structure and an ultrasonic welding method;

Figure 31 is a schematic diagram of a five-position wiring structure and an ultrasonic welding method for the gland;

Figure 32 is a cross-sectional view of the installation of the integral terminal using ultrasonic welding;

Figure 33 is a schematic diagram of the housing using a two-position wiring structure and the buckle assembly using upper and lower and side buckle structures;

Figure 34 is a schematic diagram of the gland adopts a two-position wiring structure and the buckle assembly adopts a top and bottom and side buckle structures;

Figure 35 is a schematic diagram of the housing adopts a five-position wiring structure and the buckle assembly adopts a top and bottom and side buckle structures;

Figure 36 is a schematic diagram of the gland adopts a five-position wiring structure and the buckle assembly adopts a top and bottom and side buckle structures;

Figure 37 is a schematic diagram of the gland adopts a five-position wiring structure and the buckle assembly adopts a top and bottom and side buckle structures;

Figure 38 is a schematic diagram of the gland adopts a five-position wiring structure and the buckle assembly adopts a top and bottom and side buckle structures;

39 is a cross-sectional view of the integral connection terminal of Embodiment 2;

FIG. 40 is a schematic diagram of a two-position wiring structure adopted for the housing of Embodiment 2;

41 is a schematic diagram of another direction in which the housing of Embodiment 2 adopts a two-position wiring structure;

FIG. 42 is a schematic diagram of a two-position wiring structure used for the gland of Embodiment 2;

FIG. 43 is a schematic diagram of another direction in which the gland of Embodiment 2 adopts a two-position wiring structure;

FIG. 44 is a schematic diagram of a three-position wiring structure adopted for the housing of Embodiment 2;

FIG. 45 is a schematic diagram of another direction in which the housing of Embodiment 2 adopts a three-position wiring structure;

Figure 46 is a schematic diagram of a three-position wiring structure used for the gland of Embodiment 2;

Fig. 47 is another schematic diagram showing the three-position wiring structure adopted by the gland of the second embodiment;

FIG. 48 is a schematic diagram of a five-position wiring structure adopted for the housing of Embodiment 2;

FIG. 49 is a schematic diagram of another direction in which the housing of Embodiment 2 adopts a five-position wiring structure;

Figure 50 is a schematic diagram of a five-position wiring structure used for the gland of Embodiment 2;

Fig. 51 is a schematic diagram showing another direction of the five-position wiring structure used for the gland of the second embodiment.

Detailed ways

Example 1

The housing structure of a wiring terminal described in the first embodiment of the utility model is shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11. , Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20 and Figure 21, the shell structure includes a shell 1 and a gland 2 that are fitted and buckled and mounted with each other. The The shell structure is a shell structure with a two-position plug-in method. The shell and the gland are fitted to form an internal cavity and the metal connector 4 that forms the wiring effect with the wire 3 is fixedly confined in the internal cavity. The shell and gland are both It is a one-piece structure; the front end of the housing is provided with two sockets 5 that allow the corresponding wires to be inserted into the internal cavity, and the back end is a plug end 25 that is smaller than the outer dimension of the housing; the top of the housing is a socket The plug-in board assembly 6 extends from the top to the rear end of the housing. The plug-in board assembly includes two plug-in boards 7. One end of the plug-in board is fixed to the top of the plug-in port to form a whole body, and the other end of the plug-in board is inserted into the gland to form a buckle connection. Between the sides and between the outer side of the plug-in board close to the side of the housing and the outer side of the housing, there is a plug-in gap 8 that allows the plugging of the terminal to be inserted into the internal cavity. Both sides of the plug-in board are recessed The sliding groove 10 installed in cooperation with the rotating head of the pull-out cover 9; the bottom of the socket extends towards the inner cavity direction. There is a positioning protrusion 11 that locates and presses the elastic piece of the metal connector to fix one end. The positioning protrusion 11 is connected to the inner cavity. A positioning cavity groove 12 is formed at the bottom, and the fixed end of the elastic piece of the metal connector is placed in the positioning cavity groove; the inner side of the gland is provided with a socket groove 13 that is matched with the plug end of the shell and clamped, and the upper part of the gland There is an insert limit slot 14 that allows the fixed insert on the top surface of the back of the metal connector to be inserted, and a positioning plate 15 for pressing the metal surface of the back of the metal connector is provided in the gland under the limit slot of the insert. A threading positioning slot 16 corresponding to each threading hole 27 on the back of the metal connector is formed between the adjacent positioning plate and the side surface of the gland and the outermost positioning plate.

The general structure of the metal connector and the pull-out cover that are configured to form an integral terminal with the shell structure is as follows: the metal connector includes a fixed insert that is arranged horizontally, and the bottom of the fixed insert extends downward to form an integral structure and is provided with a threading hole. Sheet, the bottom plate fixedly connected to the bottom of the threading sheet, the elastic body extending inward and upward at one end of the bottom plate to reach the top of the threading hole, the fixed insert and the threading sheet form a similar cross section with a shape similar to "7", the bottom plate and the elastic sheet Form a shape similar to "ゝ" in cross section. The pull-out cover consists of a handle and two pressing plates with a branched symmetrical structure extending downwards from the handle. The inner side of the two pressing plates is provided with a rotating head that slides into the slot of the plug-in board. The pull-out cover extends from the insertion gap of the pull-out cover. After entering the internal cavity, the rotating head is put into the chute, the bottom of the pressing plate is attached to the top surface of the elastic sheet or a force less than the reset elasticity of the elastic sheet is applied to the elastic sheet (the elastic sheet is not deformed), and the handle of pulling the cover lies flat Or slightly lift up on the front end of the shell and protrude a small part.

In this embodiment, the plug end protrudes from the side and bottom of the housing in the rearward direction and forms a secondary step with the side and bottom of the housing, the plug end of the housing is located on the inside, and the side and bottom of the housing are located on the outside; The socket slot is composed of a side slot 19 that fits into the side of the plug end and a bottom slot 20 that fits into the bottom of the plug end; the upper part of the gland is provided with an insert plate that matches the insert end of the insert plate. Slot 22; the plug end and the socket slot are installed and fixed, and the plug-in board and the plug-in board slot are fastened and fixed by buckle components.

In this embodiment, the buckle assembly includes a bottom card protrusion 17 provided on the bottom surface of the plug end and protruding, a top card protrusion 18 provided on the top surface of the plug-in board and protruding, and a bottom slot The bottom card notch 21 that is fastened by the bottom and the bottom card protruding head, the top card notch 23 that is provided on the top of the plug-in board slot and is fastened with the top card protruding head; an insert board with a top card protruding head The insertion end is a plug-in board plug and extends from the bottom of the board. After the plug-in board plug is inserted into the plug-in board slot, the plug-in board and the gland form a butt joint installation and fixation. Each plug-in board plug corresponds to its respective plug-in board slot to form a fixing buckle. Install tightly.

In this embodiment, the positioning protrusion is a diamond shape that is slightly inclined downward, so that the space of the positioning cavity is gradually narrowed from the outside to the inside. The positioning protrusion can also be trapezoidal.

In this embodiment, the positioning plate presses against the metal surface between the adjacent threading holes of the metal connector, the threading holes and the threading positioning grooves are arranged facing each other, and the positioning grooves are separated by the positioning plate.

In this embodiment, the slot of the threading positioning slot is smaller than the hole of the threading hole, as shown in Figure 14; it can also be that the slot of the threading positioning slot is larger than the hole of the threading hole, which can make the wire metal easier Pass into the threading positioning groove and reach the deepest wall surface of the threading positioning groove, that is, the metal end of the wire can penetrate to the closed surface of the threading positioning groove, increase the contact area of the wire metal terminal connection, and improve the stability of the connection, as shown in Figure 15. Shown. The opening of the threading hole and the notch of the threading positioning slot are both larger than the cross-sectional diameter of the metal end of the wire.

In this embodiment, convex arc-shaped protrusions 24 extend toward the top on both sides of the insert limiting slot.

In this embodiment, the rear end of the gland is provided with a test port 26 for testing the power connection, and the test port is provided between the threading positioning grooves.

In this embodiment, the four corners of the housing and the gland are rounded rectangles after mounting and buckling.

As shown in Fig. 22, Fig. 23, Fig. 24, and Fig. 25, the housing and gland of the housing structure of the first embodiment can also adopt a three-position plug-in method or a five-position plug-in housing structure.

In this embodiment, the installation and fixation of the plug end and the socket slot and the installation and fixation of the plug-in board and the plug-in board slot can also be fixed by bonding or ultrasonic welding, as shown in Figure 26, Figure 27, Figure 28, Figure 29, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26, Figure 27, Figure 28, Figure 29, Figure 26. 30. As shown in Figure 31 and Figure 32.

In this embodiment, the structure of the buckle assembly further adds a side locking projection 29 provided on the side of the plug end and a side locking notch 30 provided on the side slot to cooperate with the side locking projection. , Which is fixed by top buckle installation, bottom buckle installation and side buckle installation, as shown in Figure 33, Figure 34, Figure 35, Figure 36, Figure 37, Figure 38. It is also possible to simply adopt the fixing of the side snap-fitting of the side snap protrusion and the side snap notch.

Example 2

This embodiment 2 is modified on the basis of embodiment 1, and the details are as follows:

The front end of the housing and the back end of the gland of this embodiment are respectively provided with a housing test port 27 and a gland test port 28. The positioning protrusion is triangular, so that the space of the positioning cavity is gradually narrowed from the outside to the inside. The shell and gland can also adopt two-position plug-in mode, three-position plug-in mode or five-position plug-in mode shell structure; as shown in Figure 39, Figure 40, Figure 41, Figure 42, Figure 43, Figure 44, Figure 45, As shown in Figure 46, Figure 47, Figure 48, Figure 49, Figure 50 and Figure 51.

The above are only preferred embodiments of the present utility model, and do not limit the technical content of the present utility model in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

A housing structure of a wiring terminal, which is characterized in that it comprises a housing and a gland that are mutually matched and installed and fixed, and the housing and the gland are cooperatively installed to form an internal cavity, and the metal connector that forms a wiring effect with the wire is fixedly confined to the internal cavity. In the cavity, the housing and the gland are both an integral structure; the front of the housing is provided with at least two sockets that allow the corresponding wires to be inserted into the internal cavity, and the back end is a plug end with a smaller outer size than the housing; The top of the housing is a plug-in board assembly extending from the top of the socket to the rear of the housing. The plug-in assembly includes at least two plug-in boards. One end of the plug-in board is fixed to the top of the plug-in port to form an integrated body, and the other end of the plug-in board is inserted into the gland to form installation Fixed, between the sides of adjacent plug-in boards and between the outer side of the plug-in board near the side of the housing and the outer side of the housing, there is a plug-in gap that allows the pull-out cover of the terminal to be inserted into the internal cavity, and the two sides of the plug-in board The sides are all recessed with sliding grooves that are installed in conjunction with the rotating head of the pull-out cover; the bottom of the socket extends toward the inner cavity, and there is a positioning protrusion that locates and presses the elastic piece of the metal connector to fix one end. The positioning protrusion is connected to the internal cavity. A positioning cavity groove is formed at the bottom of the cavity, and the fixed end of the elastic sheet of the metal connector is placed in the positioning cavity groove; the inner side of the gland is provided with a socket groove that is installed in cooperation with the plug end of the shell, and the upper part of the gland is provided There is an insert limit slot that allows the fixed insert on the top surface of the back of the metal connector to be inserted, and a positioning plate that presses the metal surface of the back of the metal connector is provided in the gland under the limit slot of the metal connector, adjacent to the positioning plate A threading positioning slot corresponding to each threading hole on the back of the metal connector is formed between the side surface of the gland and the outermost positioning plate; the casing or/and the gland are provided with a test port for testing the power connection.
The housing structure of a wiring terminal according to claim 1, wherein the plug end protrudes from the side and bottom of the housing in the rear direction and forms a secondary step with the side and bottom of the housing. The plug of the housing The end is located on the inside, and the side and bottom of the housing are on the outside; the socket slot is composed of a side slot that is mated with the side of the plug end and a bottom slot that is mated with the bottom of the plug end; the upper part of the gland The plug-in board slot is provided with the plug-in end of the plug-in board; the plug end and the socket groove are installed and fixed, and the plug-in board and the plug-in board slot are fixed by bonding or ultrasonic welding, or by buckle assembly. fixed.
The housing structure of a wiring terminal according to claim 2, wherein the buckle assembly includes a bottom surface card protrusion provided on the bottom surface of the plug end and protruding, and a protrusion provided on the top surface of the plug-in board. The top card protruding head, the bottom card notch provided at the bottom of the bottom slot and the bottom card protruding head to fasten together, the top card notch provided at the top of the board slot and the top card protruding head fastened together, and It may include a side card protrusion provided on the side of the plug end and a side card slot provided on the side slot for buckling with the side card protrusion; an insertion end with a top card protrusion The part is a plug-in board plug and extends from the bottom of the plug-in board. After the plug-in board plug is inserted into the plug-in board slot, the plug-in board and the gland form a butt joint installation and fixation. Each plug-in board plug corresponds to its respective plug-in board slot to form a fixed buckle installation .
The housing structure of a wiring terminal according to claim 3, wherein the positioning protrusion is triangular, trapezoidal, or rhombus, so that the space of the positioning cavity is gradually narrowed from the outside to the inside.
The housing structure of a wiring terminal according to claim 4, wherein the positioning plate presses against the metal surface between the adjacent threading holes of the metal connecting piece, and the threading hole and the threading positioning slot are arranged facing each other. , The positioning slot is separated by the positioning plate.
The housing structure of a wiring terminal according to claim 5, wherein the slot of the threading positioning slot is larger than the hole of the threading hole or smaller than the hole of the threading hole, and the hole of the threading hole and the threading positioning The notches of the grooves are all larger than the cross-sectional diameter of the metal end of the wire.
The housing structure of a wiring terminal according to claim 6, wherein the two sides of the insert limiting slot have protruding arc-shaped protrusions extending toward the top.
The housing structure of a terminal according to claim 7, wherein the test port is provided at the rear end of the gland.
The housing structure of a terminal block according to claim 7, wherein the front end of the housing and the back end of the gland are respectively provided with a housing test port and a gland test port.
The housing structure of a connecting terminal according to any one of claims 1 to 9, wherein the four corners of the housing and the gland are rounded and rectangular after being installed and buckled.