An output terminal

Abstract

The present invention belongs to the technical field of power connection structure, and discloses an output terminal, including a shell and positive and negative guide pieces independently arranged in the shell; the front end of the shell has a wire jack for external load line access, and the ends of the positive and negative guide pieces are respectively located in the inner space of a wire jack; the rear end of the shell has an opening for the other ends of the positive and negative guide pieces to pass through, and the shell has a negative pole table for external negative wiring to connect the negative guide piece, and the positive guide piece passes through the opening and extends away from the shell to form a positive wiring end, and the length of the positive guide piece is greater than that of the negative guide piece, and the positive wiring parts of the positive guide pieces of all wiring terminals arranged in the same cabinet are connected to the same positive power supply board. The present invention is suitable for load equipment with different power requirements, and can quickly operate wiring.

Description

Technical Field

[0001] The invention belongs to the technical field of power connection structures, and in particular relates to an output terminal. Background Art

[0002] The terminal block is an electrical connection element used to achieve reliable connection between wires in a circuit or between wires and electrical equipment. The principle is to fix the wires to the terminals by crimping, welding or bolting to ensure smooth passage of current. The structural features include a metal contact body wrapped in insulating material, designed to be easy to install and disassemble, with a variety of specifications to adapt to different wire diameters and current loads, while ensuring the stability and safety of the connection. It is widely used in electrical systems such as electrical control cabinets, distribution boxes, and electronic equipment.

[0003] There are many types of terminals, the most common ones are screw terminals, spring terminals, plug-in terminals, etc. Screw terminals fix the wires by tightening the screws, and are suitable for occasions that require a firm connection; spring terminals use spring force to ensure the reliability of the connection, which is convenient and quick to plug and unplug, and is suitable for applications with frequent plug-in and plug-in; plug-in terminals can easily connect and disconnect the circuit, and are often used in modular equipment.

[0004] For the wiring terminals set in the cabinet, especially those used for connecting load lines in large quantities and requiring debugging, adjustment and replacement of lines on site, improving the connection efficiency and adapting to various load requirements is one of the improvement directions of the existing general-purpose wiring terminals. Existing wiring terminals, especially those used as high-power output terminal structures, usually adopt a track installation method, that is, through the shared positive and negative metal strips on the track, all the wiring terminals set on the track at the same time are connected, so as to achieve quick installation and share the positive and negative poles. This type of cabinet and wiring terminals cannot be wired separately once they leave the factory, but when the existing cabinets meet the power supply requirements of some different loads, this type of universal wiring terminals, especially the output terminals, need additional structural improvements, which is not only troublesome but also has certain hidden dangers in electricity use.

[0005] At the same time, the load connections of existing terminal blocks are mostly fixed with bolts, which has low operating efficiency, especially for a large number of square wire ends of the same specification, when wiring and debugging operations are required, the overall efficiency is low, and it will also cause the operator to simply connect the operating bolts in order to save time, which also has safety hazards and is mainly not conducive to improving the efficiency of a large number of wiring work. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides an output terminal, which belongs to a wiring terminal structure. It is mainly adapted to a specially set cabinet structure by improving the negative electrode structure, so that each output terminal has an independent negative electrode connection line, which can ensure that loads with different power demands can be wired in the same cabinet. At the same time, the wiring work can be quickly realized through the push block and trigger block structure.

[0007] The technical solution adopted by the present invention is:

[0008] In a first aspect, the present invention provides an output terminal, which is arranged in a cabinet to connect a power supply line and has a port for connecting a plurality of loads to output electric energy, and comprises a housing and a positive electrode guide piece and a negative electrode guide piece which are independently arranged in the housing;

[0009] The front end of the shell is provided with a wire plug hole for connecting an external load line, and the ends of the positive electrode guide piece and the negative electrode guide piece are respectively located in the inner space of a wire plug hole;

[0010] The rear end of the shell has an opening for the other ends of the positive guide plate and the negative guide plate to pass through, and the shell has a negative pole platform for external negative pole wiring to connect the negative pole guide plate. The positive pole guide plate passes through the opening and extends away from the shell to form a positive pole wiring end. The length of the positive pole guide plate is greater than that of the negative pole guide plate, and the positive pole wiring parts of the positive pole guide plates of all wiring terminals arranged in the same cabinet are connected to the same positive pole power supply board.

[0011] It should be noted that this type of output terminal is used for high-power electrical energy output connection, and the ports it has are arranged in rows in the cabinet to facilitate external load line access. The internal positive and negative guide plates are different from other wiring terminals in that the rear ends of the positive poles are powered by the same conductor or wiring, that is, the positive poles of all wiring terminals arranged in the cabinet are of equal potential. However, the negative pole will be designed with a separate negative pole platform structure according to the different loads, for the end of the negative pole guide plate that has just passed through the shell to connect to the external negative pole wiring. The negative pole wiring is a separate cable that will be connected to the negative end of the corresponding potential according to demand, that is, the negative pole of each output terminal may be connected to a different potential, resulting in a potential difference for each negative pole. In order to achieve this effect, the output terminal designed in this application is provided with different shell structures and guide plate structures, wherein the positive pole guide plate is longer and has an extension after passing through the shell, so as to facilitate connection to the positive power supply board at the far end. Since the output terminals are arranged at equal distances in the cabinet, each output terminal has a positive current guide plate of the same length. After the output terminal is installed in the corresponding installation position, the end of the positive current guide plate on the rear side will approach or contact the positive power supply board. At this time, only measures need to be taken to ensure the stability of its connection. This longer setting method is to leave a certain space, so that it is convenient to connect several internal negative pole wires to the negative pole platform of the corresponding output terminal, and by taking measures to keep the end of the negative pole wire stably connected to the negative pole guide plate at the negative pole platform, so as to achieve separate negative pole wiring for each output terminal.

[0012] As for the defined front and rear ends, the side connected to the load is the front end, and generally the end face of this side faces the cabinet door to facilitate external wiring operations, while the rear end is the end connected to the internal circuit of the cabinet, and is generally set inward after being fixed.

[0013] In combination with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the opening of the negative electrode guide piece corresponding to the rear end of the shell is the same as the cross-sectional size of the negative electrode guide piece, the negative electrode platform is an L-shaped plate structure formed by extending the shell outward, and a hexagonal groove is provided on the negative electrode platform, and an electrode bolt is placed in the groove, and the end of the negative electrode guide piece passing through the opening is attached to the surface of the groove and has a through hole corresponding to the electrode bolt.

[0014] In combination with the first aspect, the present invention provides a second implementation of the first aspect, wherein the shell comprises a bottom shell and an upper cover that are buckled together, and the upper cover and the bottom shell are detachably and limitably connected via a number of buckles and positioning components.

[0015] In combination with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the positive electrode cavity and the negative electrode cavity are independent of each other in the bottom shell;

[0016] One end of the positive electrode cavity is connected to the wire plug hole of the corresponding positive electrode, and the other end is connected to the positive electrode channel provided in the bottom shell for placing the positive electrode guide piece, and the positive electrode guide piece penetrates into the positive electrode cavity and contacts and conducts electricity with the conductor entering from the wire plug hole;

[0017] One end of the negative electrode cavity is connected to the wire plug hole of the corresponding negative electrode, and the other end is connected to the negative electrode channel arranged in the bottom shell for placing the negative electrode guide plate. The negative electrode guide plate penetrates into the negative electrode cavity and contacts and conducts electricity with the conductor entering from the wire plug hole.

[0018] In combination with the second embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein an elastic clip is respectively provided in the positive electrode cavity and the negative electrode cavity, and an operating hole is provided on the end face of the shell where the wire plug hole is provided, corresponding to each wire plug hole, and the elastic clip has an end portion located in the operating hole, and the elastic clip is pushed by a push block provided in the operating hole to clamp / release the conductor entering the wire plug hole.

[0019] In combination with the third embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the elastic clip is an elastic metal sheet body sleeved on the end of the positive electrode guide piece or the negative electrode guide piece, the elastic clip is electrically connected to the positive electrode guide piece or the negative electrode guide piece to form a clamping space, and the elastic clip further has a clamping hole in the direction of the port of the corresponding wire jack inside the shell;

[0020] The elastic clip has an elastic force that always constrains the clamping hole. The push block squeezes the elastic clip to overcome the elastic force and adjust the opening size of the clamping hole to clamp / release the conductor entering the clamping space.

[0021] In combination with the fifth embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein the elastic clip has a bent and arched protrusion, the end face of the protrusion is in the operating hole and is in contact and extrusion with the wedge-shaped surface of the push block, and a lubrication area is provided on the end face of the protrusion at a distance of no more than 1 mm from the edge of the protrusion, and the lubrication area is provided with a lubrication layer with a thickness of no more than 1 mm.

[0022] In combination with the fifth embodiment of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein a raised limit strip is provided at the edge where the inner port of the wire plug hole is located, and the movable portion of the elastic clip slides against the inner port of the wire plug hole, and when the clamping hole is expanded, the edge of the clamping hole crosses the limit strip to clamp and limit to maintain the expanded state;

[0023] The wire socket is also provided with a trigger block that can slide along the wire socket. The trigger block has a channel to prevent the external conductor from being inserted into the positive cavity or the negative cavity, and has a trigger end that is inserted into the positive cavity or the negative cavity and contacts the elastic clip. When the elastic clip is clamped and limited by the limit bar, the trigger block is pushed from the outside to push the elastic clip out of contact with the limit bar and is pulled back to the locking clamping hole by the elastic force.

[0024] In combination with the seventh implementation of the first aspect, the present invention provides an eighth implementation of the first aspect, wherein the trigger block is a tubular structure having an operating end protruding from an opening end surface of the wire insertion hole;

[0025] The wire jack and the operating hole have a connecting portion, the trigger block has a connecting portion that is linked to the push block through the connecting portion, and when the push block pushes the elastic clip to be limited by the limit bar, the trigger end of the trigger block does not contact the elastic clip;

[0026] When inserting an external conductor into the wire jack, the operating end drives the push block to first push the elastic clip to engage with the limit strip, and then push the trigger block inward so that the trigger end pushes the elastic clip out of contact with the limit strip.

[0027] In combination with several embodiments of the first aspect, the present invention provides a ninth embodiment of the first aspect, wherein the bottom shell is further provided with a thermal trip cavity between the positive electrode channel and the negative electrode channel, and the thermal trip cavity is communicated with the negative electrode channel;

[0028] The negative electrode guide plate includes a thermal release pre-stressing part and a thermal release fixing part as independent structures, one end of the thermal release pre-stressing part extends to the negative electrode platform and is connected to the negative electrode wiring, and one end of the thermal release fixing part extends to the negative electrode cavity and is connected to the external conductor;

[0029] The thermal trip pre-stressing part and the thermal trip fixing part are conductively connected by low-temperature soldering in the thermal trip cavity. When the load power connected to the output terminal exceeds a set threshold, the low-temperature soldering connection melts and the thermal trip pre-stressing part is elastically deformed and separated to cut off power.

[0030] The beneficial effects of the present invention are:

[0031] (1) The present invention adopts a special structural design of the housing and the electrode guide sheet, and is provided with a longer positive electrode guide sheet for fixed connection with the positive electrode power supply board provided in the cabinet, so that the positive electrode guide sheets of several output terminals can be directly connected with the positive electrode power supply board to form an equal potential after being installed in the corresponding position of the cabinet. At the same time, a sufficient length is provided to form an avoidance zone, so that the negative electrode platform close to the housing is connected to the external negative electrode wiring, which can meet the different power supply requirements of the same cabinet for different loads;

[0032] (2) The present invention realizes quick connection of the conductor of the external load by means of the push block, the elastic clamp structure, the positive electrode guide plate, and the negative electrode guide plate, thereby avoiding the use of bolts and improving the wiring efficiency. At the same time, through different push block external structure designs and operation hole channel designs, the push block can be operated with a dedicated tool, and an end structure that is convenient for direct hand pressing operation can also be provided, thereby improving the operating efficiency.

[0033] (3) The present invention also optimizes the structure of the elastic clamp so that the end surface in contact with the push block has a lubrication area of ​​sufficient area, thereby maintaining a small friction between the push block and the elastic clamp during multiple push contacts, thereby avoiding the problem of increased resistance of the push block after multiple uses;

[0034] (4) The present invention provides a trigger block structure to provide an operating end at the line plug hole, which can prevent the external conductor or cable from freely entering or exiting the line plug hole. At the same time, the limit bar structure can be used to limit and fix the elastic clip when the maximum clamping hole is maintained. Then, after inserting a conductor of sufficient length, the trigger block can be synchronously triggered by the finger that pushes the conductor or cable into the line plug hole, pushing the internal elastic clip to lose the limiting force and directly lock the clamping hole, thereby achieving a synchronous effect. At the same time, after pressing the push block, the clamping hole can be kept in the maximum state, and then the conductor or cable can be inserted as needed, which is more convenient to operate.

[0035] (5) The present invention also optimizes the push block and the trigger block to be set as a linkage structure, so that when the cable or conductor is inserted into the wire jack with one hand, the trigger block is driven to drive the push block to expand the clamping hole, and then the second stage triggering effect of the trigger block allows the conductor of sufficient length to enter the clamping space and be clamped and fixed by the elastic clip. This method does not require tools or additional hands to operate the push block, further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is an axonometric diagram of a plurality of output terminals arranged in a cabinet in an embodiment of the present invention;

[0037] Figure 2 is a plan view of a plurality of output terminals arranged in a cabinet in an embodiment of the present invention;

[0038] Figure 3 is an external plan schematic diagram of an output terminal in an embodiment of the present invention;

[0039] Figure 4 is an external isometric diagram of an output terminal in an embodiment of the present invention;

[0040] Figure 5 is an exploded diagram of the output terminal of the first solution in the embodiment of the present invention;

[0041] Figure 6 is an axonometric view of a positive electrode guide plate in an embodiment of the present invention;

[0042] Figure 7 is an internal plan view of an output terminal of the first solution in an embodiment of the present invention;

[0043] Figure 8 is an internal plan view of an output terminal of the second solution in an embodiment of the present invention;

[0044] Fig. 9 is a first isometric view of the interior of the output terminal of the second solution in an embodiment of the present invention;

[0045] Fig.10 is a second isometric view of the interior of the output terminal of the second solution in the embodiment of the present invention;

[0046] Fig.11 The present invention Fig.10 A is a partial enlarged schematic diagram in FIG.

[0047] In the figure: 1-terminal, 101-upper cover, 102-bottom shell, 2-positive guide plate, 3-negative guide plate, 301-thermal release pre-stressing part, 302-thermal release fixing part, 4-pressing card, 5-wire jack, 6-push block, 7-elastic clip, 701-lubrication area, 8-electrode bolt, 9-trigger block, 10-limiting strip, 11-operating hole, 12-positive power supply board, 13-negative wiring, 14-cabinet plate, 15-mounting hole, 16-negative table. DETAILED DESCRIPTION

[0048] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] Embodiment 1:

[0056] This embodiment discloses an output terminal, which is a connector device arranged in a cabinet for connecting a load and a power supply line, and has two lines, a positive line and a negative line.

[0057] This embodiment is explained by setting a number of such output terminals in a power cabinet. The core point is to achieve two improvements through the optimized output terminal structure. First, the current universal output terminal can only connect to the positive and negative poles of the unified power supply, and cannot achieve the effect of connecting different loads to different cathode point potentials. Second, in large cabinets, the existing output terminal is fixed with bolts to connect to the wiring harness. The inefficient mode is changed to meet the needs of wiring and testing with more different load lines through a more efficient operating structure.

[0058] Specifically, refer to Figure 1, the figure shows that a cabinet panel 14 in the cabinet is provided with a plurality of wiring terminals 1, and a plurality of mounting holes 15 are evenly spaced on the vertical plate of the cabinet panel 14. The mounting holes 15 in this embodiment are rectangular openings hollowed out on the vertical plate. Each wiring terminal 1 has two parts, an inner part and an outer part, from the outside, wherein the outer size is larger than the inner part, and a group of pressing clamps 4 are symmetrically arranged at the connection between the outer part and the inner part. During installation, the inner part of the wiring terminal 1 is inserted into any mounting hole 15 from the outer side of the vertical plate until the two pressing clamps 4 on the side are squeezed and deformed, and form a clamping limit with the edge of the mounting hole 15. Since the size of the mounting hole 15 is smaller than the outer size, the wiring terminal 1 is clamped at the mounting hole 15 by pressing the clamps 4 to form a fixed connection. Each pressing clamp 4 has an outwardly protruding end, and the two pressing ends are pressed inward by two fingers at the same time, so that the entire wiring terminal 1 can be removed.

[0059] Furthermore, each terminal block 1 has a shell made of insulating material, the outside of the shell is exposed to the cabinet, and the metal part of the load harness end is cut to remove part of the insulating layer and inserted into the wire socket 5 set on the front of the shell to form a connection. There are two wire sockets 5, corresponding to the cathode and the anode respectively, and an icon indicating the negative or positive pole is set in the vacant area on one side of each wire socket 5. A positive current guide plate 2 and a negative current guide plate 3 are set inside the shell, and two openings are set on the end face on the inner side of the shell. One end of the positive current guide plate 2 is inside the corresponding wire socket 5, and the other end passes through the opening and extends a certain length to contact and conduct electricity with the positive power supply plate 12 set on the cabinet plate 14. One end of the negative current guide plate 3 is inside the wire socket 5 corresponding to the negative pole, and the other end passes through the opening and is connected to the external negative pole wiring 13 close to the rear end face of the shell.

[0060] Reference Figure 1 and Figure 2 A negative electrode platform 16 is provided at the opening of the shell corresponding to the negative electrode guide sheet 3. The negative electrode platform 16 is an L-shaped plate structure formed by extending the outer edge of the shell corresponding to the opening outward. A hexagonal recess is provided on one side of the negative electrode platform 16, and an electrode bolt 8 is provided in the recess. The end of the negative electrode guide sheet 3 passing through the corresponding opening is provided with an opening corresponding to the electrode bolt 8. The installation is to fit the annular connector of the corresponding negative electrode connection 13 to the part of the negative electrode guide sheet 3 with the opening on the negative electrode platform 16, and fix it by providing a screw corresponding to the electrode bolt 8.

[0061] Furthermore, a metal positive power supply board 12 is fixed by bolts at a position away from the mounting hole 15 of the cabinet plate 14, and the positive current guide piece 2 extending from each terminal block 1 installed at the mounting hole 15 is of the same length, and fits exactly at the positive power supply board 12. The positive power supply board 12 is provided with a plurality of screw holes, corresponding to the openings at the ends of the positive current guide piece 2, which are also fixed by bolts. Since this part is the inner side of the cabinet plate 14, there is no need to replace the load harness as many times as the outer part, and it can be fixed by bolts.

[0062] Figure 1 and Figure 2 It can be seen that the extended length of the anode guide plate is much greater than the extended length of the negative guide plate, and the ratio of the extended lengths is not less than 4. This ensures that there is sufficient space at the negative electrode platform 16 for connecting and arranging the negative electrode wiring 13 connected to each terminal 1.

[0063] The above embodiment is used to illustrate how to connect different negative pole connections 13 to meet the power demand of each different load, and then this embodiment describes how to improve the connection efficiency.

[0064] Further, see Figure 3-Figure 7 , providing a structural setting method inside the terminal block 1.

[0065] The shell includes an upper cover 101 and a bottom shell 102 that are interlocked. A plurality of connection holes are provided in the bottom shell 102. A plurality of clips and connection columns are provided on the upper cover 101. A relatively stable limited fixed connection is formed between the clips and the connection columns and the bottom shell 102.

[0066] Reference Figure 5 and Figure 7 The bottom shell 102 has two independent spaces corresponding to the positive electrode and the negative electrode, wherein the space corresponding to the positive electrode includes an anode cavity and an anode channel that are interconnected, wherein the positive electrode guide 2 is arranged in the anode channel, one end of which is in the anode cavity, and the other end of which passes through the opening to connect to the external positive electrode power supply board 12. The space corresponding to the negative electrode also includes a negative electrode cavity and a negative electrode channel, and a negative electrode guide 3 is arranged in the negative electrode channel, one end of which is in the negative electrode cavity, and the other end of which passes through the outlet.

[0067] Among them, the positive electrode cavity and the negative electrode cavity are both connected to the wire jack 5 on the corresponding side, the external wire harness is inserted into the wire jack 5, and a certain length of exposed metal conductor part is formed in the positive electrode cavity or the negative electrode cavity, and the exposed metal conductor part is conductively connected with the positive electrode guide plate 2 or the negative electrode guide plate 3 through the contact.

[0068] Reference Figure 5 and Figure 6It can be seen that an elastic clip 7 is provided at the end of each of the positive electrode guide piece 2 and the negative electrode guide piece 3, and an operation hole 11 is provided in the bottom shell 102 corresponding to each wire plug hole 5, and the elastic clip 7 is arranged in the operation hole 11. The elastic clip 7 and the two guide pieces are made of metal sheets of the same specification by bending to form an annular structure connected end to end, and are fixed by clamping with the end of the positive electrode guide piece 2 or the negative electrode guide piece 3.

[0069] In this embodiment, the operating hole 11 is connected to the positive electrode cavity or the negative electrode cavity, and the connection point is the anode guide plate or the negative guide plate 3, and the elastic clip 7 has a flat portion that fits on the surface of the positive guide plate 2 or the negative guide plate 3 at the connection point, and the other side has a protruding portion protruding outward, and one side of the protruding portion has a clamping hole facing the corresponding wire plug hole 5, and a certain clamping space is formed between the protruding portion and the positive guide plate 2 or the negative guide plate 3, and the end of the wire harness entering from the wire plug hole 5 can pass through the clamping hole and be in the clamping space.

[0070] Since the entire protrusion is a bent structure, the protrusion has an elastic force to move away from the flat front contacted by the positive electrode guide sheet 2 or the negative electrode guide sheet 3 in the initial state, that is, in the absence of external force, the protrusion always has a tendency to move outward, and the clamping hole is an opening part in the positive electrode cavity or the negative electrode cavity. The clamping hole can be regarded as divided into two by the positive electrode guide sheet 2 or the negative electrode guide sheet 3. When there is no external force, the clamping hole in the positive electrode cavity or the negative electrode cavity has the smallest size, and the external conductor cannot be inserted into the clamping space in the clamping hole. By pushing the protrusion from the side, the part in the positive electrode cavity or the negative electrode cavity slides, so that the clamping hole continues to become larger until the external conductor can pass through, and when the external force is removed, the elastic clip 7 will reset and clamp the conductor already in the clamping space, so as to achieve the effect of maintaining a stable electrical connection.

[0071] Among them, a push block 6 corresponding to the elastic clip 7 is also provided in the operating hole 11. The push block 6 in this embodiment has a force-bearing end at the outer end surface of the operating hole 11. Figure 5 In the middle, there is a slotted groove on the flat surface of the push block 6, and a tool is used to push the push block 6 to squeeze the protrusion of the elastic clip 7 inward. In order to achieve better pushing and guiding, the end face inside the push block 6 is set to a wedge shape, thereby achieving the effect of side extrusion.

[0072] Reference Figure 6 As shown, the elastic clip 7 has a bent and arched protrusion, the end face of the protrusion is in the operating hole 11 and is in contact and extrusion with the wedge-shaped surface of the push block 6, and a lubrication area 701 is provided on the end face of the protrusion with a distance of no more than 1 mm from the edge of the protrusion, and the lubrication area 701 is provided with a lubrication layer with a thickness of no more than 1 mm.

[0073] With the above arrangement, the wiring steps are as follows: first, the wire harness end to be inserted into the wire jack 5 is processed so that it has enough exposed metal parts, and then the wire harness is inserted into the corresponding wire jack 5. At this time, a tool is used to push the push block 6 on the corresponding side to enlarge the size of the clamping hole in the positive cavity or the negative cavity so that the exposed metal part inserted from the wire jack 5 can be smoothly passed. When the inserted length reaches the standard, the external tool is removed, so that the push block 6 loses its driving force, and the elastic clip 7 is elastically reset to squeeze out the push block 6, and the exposed metal part in the clamping space is clamped and fixed.

[0074] In other embodiments, the structure of the push block 6 is optimized, and its end face is configured to protrude from the end face of the operating hole 11, and its end is configured to be an enlarged end that is convenient for finger contact operation, so that the push block 6 can be pushed only by manual operation.

[0075] In another embodiment, referring to Figure 8-Figure 11 Based on the above method, further optimization is performed to achieve a state where the push block 6 can lock the elastic clip 7 to maintain the maximum clamping hole by pushing the push block 6 once, so as to avoid always maintaining the force on the push block 6 before inserting the wiring harness, thereby improving efficiency. A trigger block 9 is provided at the wire plug hole 5, which can reciprocate along the axial direction of the wire plug hole 5.

[0076] Among them, the trigger block 9 is a tubular structure, and there is enough space in the middle to avoid the wiring harness inserted into the wire socket 5. At the same time, in the positive cavity or the negative cavity, the side surface of the raised portion of each elastic clip 7 is in contact with the inner end face of the opening of the wire socket 5. A limit strip 10 structure is provided at the inner edge of the wire socket 5. The limit strip 10 structure has a certain height, and the part of the elastic clip 7 that slides in contact with the end face can be conveniently clamped by the limit strip 10 to maintain a temporary fixed state. At this time, the push block 6 squeezes the elastic clip 7 to the maximum value, so that the opening of the clamping hole is stably maintained at the maximum expansion area, and the corresponding wire socket 5 and the clamping hole remain in a corresponding state, and the wiring harness inserted from the wire socket 5 can enter the clamping space through the clamping hole.

[0077] The trigger block 9 has a trigger end that can pass through the internal port of the wire jack 5. The trigger end is an annular end face that can abut against the outer peripheral surface of the clamping hole. As the trigger block 9 continues to move inward, the elastic clip 7 is pushed inward, so that the inner edge of the clamping hole is out of contact with the limit strip 10. At this time, the elastic clip 7 loses its limiting effect and will directly contract the clamping hole with the elastic force to fix the inserted wire harness.

[0078] In this embodiment, the outer end of the trigger block 9 is higher than the opening end surface of the wire jack 5, or Fig. 9As shown in the figure, a concave end surface is formed between the two wire jacks 5, and a part of the structure of the trigger block 9 is exposed. The finger can directly press this part so that the trigger block 9 can slide inward to achieve the triggering effect. The contact area can also be increased to form an enlarged end.

[0079] This setting method can meet the needs of wiring, that is, corresponding to the installed several wiring terminals 1, each push block 6 is pushed into the operating hole 11 by hand or tool, and the elastic clips 7 in the two wire plug holes 5 are maintained in the maximum clamping hole state to keep stable. At this time, the external load wiring harness is arranged and quickly inserted into the corresponding wire plug hole 5, and at the same time, the finger used to insert the wiring harness pushes the trigger block 9 to trigger the unlocking effect to quickly clamp the inserted wiring harness. This method does not need to maintain the pushing force of the push block 6 all the time, and can also maintain the maximum expansion state of the clamping hole for a certain period of time, which brings a more flexible operation method to the wiring.

[0080] As another embodiment, the wire plug-in hole 5 and the operating hole 11 have a connecting part, the trigger block 9 has a connecting part which is linked with the push block 6 through the connecting part, and when the push block 6 pushes the elastic clip 7 to be limited by the limit strip 10, the trigger end of the trigger block 9 does not contact the elastic clip 7; when an external conductor is inserted into the wire plug-in hole 5, the operating end is operated to drive the push block 6 to first push the elastic clip 7 to be limited by the limit strip 10, and then push the trigger block 9 inward so that the trigger end pushes the elastic clip 7 to break contact with the limit strip 10.

[0081] This method is a two-stage fixing method. In the first stage, the trigger block 9 pushes the push block 6 to expand the clamping hole of the elastic clip 7 to the maximum and is limited to maintain stability. In the second stage, the trigger block 9 is continuously pushed to unlock the elastic clip 7 to enable it to be clamped quickly. Different from the above scheme, there is another simple implementation method, which does not require the additional limit bar 10, that is, the trigger block 9 and the push block 6 form an integrated structure, but there is no need to operate the push block 6 and insert the wire harness by two hands respectively. The wire harness to be inserted into the wire jack 5 can be directly inserted with one hand, and at the same time, the finger presses against the trigger block 9 to open the clamping hole.

[0082] Furthermore, based on the above embodiment, the overload protection effect inside the wiring terminal 1 is achieved by improving the structure inside the bottom shell 102 .

[0083] Among them, refer to Figure 8The bottom shell 102 is also provided with a thermal trip cavity between the positive electrode channel and the negative electrode channel, and the thermal trip cavity is connected to the negative electrode channel; the negative electrode guide plate 3 includes a thermal trip pre-stressing part 301 and a thermal trip fixing part 302 as independent structures, one end of the thermal trip pre-stressing part 301 extends to the negative electrode platform 16 and is connected to the negative electrode wiring 13, and one end of the thermal trip fixing part 302 extends to the negative electrode cavity and is connected to the external conductor; the thermal trip pre-stressing part 301 and the thermal trip fixing part 302 are conductively connected by low-temperature soldering in the part located in the thermal trip cavity, and when the load power connected to the output terminal exceeds the set threshold, the low-temperature soldering connection is melted and the thermal trip pre-stressing part 301 is elastically deformed and separated to cut off the power.

[0084] It should be noted that in this method, the thermal trip fixing portion 302 and / or the thermal trip pre-stressing portion 301 adopts a heat-generating conductor material, which can generate enough heat to melt the low-temperature soldered connection part under rated power, but under normal power, the heat is not enough to change the state of the low-temperature soldered connection part.

[0085] The present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. An output terminal, which is arranged in a cabinet to connect a power supply line and has ports for connecting several loads to output electric energy, characterized in that: It comprises a shell and a positive electrode guide piece (2) and a negative electrode guide piece (3) which are independently arranged in the shell; The front end of the housing is provided with a wire plug hole (5) for connecting an external load line, and the ends of the positive electrode guide plate (2) and the negative electrode guide plate (3) are respectively located in the inner space of a wire plug hole (5); The rear end of the shell has an opening for the other ends of the positive electrode guide piece (2) and the negative electrode guide piece (3) to pass through, and the shell has a negative electrode platform (16) for connecting the external negative electrode wiring (13) to the negative electrode guide piece (3). The positive electrode guide piece (2) passes through the opening and extends away from the shell to form a positive electrode wiring end. The length of the positive electrode guide piece (2) is greater than the length of the negative electrode guide piece (3), and the positive electrode wiring parts of the positive electrode guide pieces (2) of all wiring terminals arranged in the same cabinet are connected to the same positive electrode power supply board (12); The opening of the negative electrode guide piece (3) corresponding to the rear end of the shell has the same cross-sectional size as the negative electrode guide piece (3); the negative electrode platform (16) is an L-shaped plate structure formed by extending the shell outward; a hexagonal recessed groove is provided on the negative electrode platform (16); an electrode bolt (8) is placed in the recessed groove; the end of the negative electrode guide piece (3) passing through the opening is attached to the surface of the recessed groove and has a through hole corresponding to the electrode bolt (8).

2. An output terminal according to claim 1, characterized in that: The housing comprises a bottom shell (102) and an upper cover (101) which are buckled together, and the upper cover (101) and the bottom shell (102) are detachably and limitably connected via a plurality of buckles and positioning components.

3. An output terminal according to claim 2, characterized in that: Mutually independent positive electrode chambers and negative electrode chambers in the bottom shell (102); One end of the positive electrode cavity is in communication with the wire plug hole (5) corresponding to the positive electrode, and the other end is in communication with a positive electrode channel provided in the bottom shell (102) for accommodating a positive electrode guide plate (2), wherein the positive electrode guide plate (2) penetrates into the positive electrode cavity and contacts and conducts electricity with a conductor entering from the wire plug hole (5); One end of the negative electrode cavity is connected to the wire plug hole (5) of the corresponding negative electrode, and the other end is connected to a negative electrode channel arranged in the bottom shell (102) for accommodating a negative electrode guide plate (3). The negative electrode guide plate (3) penetrates into the negative electrode cavity and contacts and conducts electricity with a conductor entering from the wire plug hole (5).

4. An output terminal according to claim 3, characterized in that: An elastic clip (7) is provided in each of the positive electrode cavity and the negative electrode cavity. An operating hole (11) is provided on the end surface of the shell on which the wire insertion hole (5) is provided, corresponding to each wire insertion hole (5). The elastic clip (7) has an end portion located in the operating hole (11). A push block (6) provided in the operating hole (11) pushes the elastic clip (7) to clamp / release the conductor entering the wire insertion hole (5).

5. An output terminal according to claim 4, characterized in that: The elastic clip (7) is an elastic metal sheet body sleeved on the end of the positive electrode guide sheet (2) or the negative electrode guide sheet (3), the elastic clip (7) is electrically connected to the positive electrode guide sheet (2) or the negative electrode guide sheet (3) to form a clamping space, and the elastic clip (7) also has a clamping hole in the direction of the port of the corresponding wire plug hole (5) inside the shell; The elastic clip (7) has an elastic force that always constrains the clamping hole, and the push block (6) squeezes the elastic clip (7) to overcome the elastic force and adjust the opening size of the clamping hole to achieve clamping / releasing of the conductor entering the clamping space.

6. An output terminal according to claim 5, characterized in that: The elastic clip (7) has a bent and arched protrusion, the end face of the protrusion is in the operating hole (11) and is in contact and extrusion with the wedge-shaped surface of the push block (6), and a lubrication area (701) is provided on the end face of the protrusion with a distance of no more than 1 mm from the edge of the protrusion, and the lubrication area (701) is provided with a lubrication layer with a thickness of no more than 1 mm.

7. An output terminal according to claim 5, characterized in that: A raised limiting strip (10) is provided at the edge where the inner port of the wire insertion hole (5) is located, and the movable part of the elastic clip (7) slides against the inner port of the wire insertion hole (5), and when the clamping hole is expanded, the edge of the clamping hole crosses the limiting strip (10) to clamp and limit the position so as to maintain the expanded state; The wire insertion hole (5) is also provided with a trigger block (9) which can slide along the wire insertion hole (5). The trigger block (9) has a passage for preventing an external conductor from being inserted into the positive cavity or the negative cavity, and has a trigger end which is inserted into the positive cavity or the negative cavity and contacts the elastic clip (7). When the elastic clip (7) is engaged and limited by the limit strip (10), the trigger block (9) is pushed from the outside to push the elastic clip (7) out of contact with the limit strip (10) and is pulled back into the locking clamping hole by the elastic force.

8. An output terminal according to claim 7, characterized in that: The trigger block (9) is a tubular structure, and has an operating end protruding from the open end surface of the wire insertion hole (5); The wire insertion hole (5) and the operation hole (11) have a connecting portion, the trigger block (9) has a connecting portion linked to the push block (6) through the connecting portion, and when the push block (6) pushes the elastic clip (7) to be limited by the limit strip (10), the trigger end of the trigger block (9) does not contact the elastic clip (7); When inserting an external conductor into the wire insertion hole (5), the operating end drives the push block (6) to first push the elastic clip (7) to engage with the limit strip (10) and then push the trigger block (9) inward so that the trigger end pushes the elastic clip (7) out of contact with the limit strip (10).

9. An output terminal according to any one of claims 3 to 8, characterized in that: The bottom shell (102) is further provided with a thermal release cavity between the positive electrode channel and the negative electrode channel, and the thermal release cavity is communicated with the negative electrode channel; The negative electrode guide piece (3) comprises a thermal release pre-stressing portion (301) and a thermal release fixing portion (302) as independent structures, one end of the thermal release pre-stressing portion (301) extends to the negative electrode platform (16) and is connected to the negative electrode wiring (13), and one end of the thermal release fixing portion (302) extends into the negative electrode cavity and is connected to an external conductor; The thermal trip pre-stressing part (301) and the thermal trip fixing part (302) are electrically connected via low-temperature soldering in the part located in the thermal trip cavity; when the load power connected to the output terminal exceeds a set threshold, the low-temperature soldering connection is melted and the thermal trip pre-stressing part (301) is elastically deformed to separate and cut off power.

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