An input terminal

Abstract

This invention belongs to the field of electrical connection structure technology and discloses an input terminal, including a housing and at least two sets of guide strips disposed within the housing. The housing includes an insertion part for inserting into a switch or cabinet socket and an outer end protruding from the socket. Each guide strip has an end that extends out of the insertion part and is electrically connected to an internal circuit. The ends are exposed, and the length of each guide strip's end is different. The internal circuit makes contact with the exposed end of each guide strip to conduct electricity. The outer end of the housing is provided with a wiring hole corresponding to each set of guide strips. A connector is provided in the wiring hole, and the conductive end of the wire bundle entering the wiring hole is pressed against the end of the guide strip away from the insertion part to form a conductive contact through the connector. The outer end of the housing is also provided with an adjustment hole corresponding to each wiring hole. An external tool is inserted into the adjustment hole and cooperates with the movable clamping block of the connector to perform a wire clamping operation. This invention has a simple structure and is easy to assemble and disassemble.

Description

Technical Field

[0001] This invention belongs to the field of electrical connection structure technology, and specifically relates to an input terminal. Background Technology

[0002] Terminal blocks are electrical connection elements used to achieve reliable connections between wires or between wires and electrical equipment in a circuit. They work by fixing wires to terminals through methods such as crimping, welding, or bolting, ensuring smooth current flow. Structural features include metal contacts wrapped with insulating material, designed for easy installation and disassembly, and available in various specifications to accommodate different wire diameters and current loads, while ensuring connection stability and safety. They are widely used in electrical control cabinets, distribution boxes, electronic equipment, and other electrical systems.

[0003] There are many types of terminal blocks, the most common being screw terminals, spring terminals, and pluggable terminals. Screw terminals secure wires by tightening screws and are suitable for applications requiring a firm connection; spring terminals use spring force to ensure reliable connections and facilitate quick insertion and removal, making them suitable for applications requiring frequent connections; pluggable terminals allow for easy connection and disconnection of circuits and are commonly used in modular equipment.

[0004] Existing terminal blocks connected to server racks or switches typically employ a pluggable structure for easy disassembly, installation, and replacement. These terminal blocks are generally located on the outward-facing side of the rack or switch, featuring several outlets for output terminals, but also including a single power supply terminal for the entire rack or switch. This power supply terminal usually uses a multi-row cable connector to access the external power source, with internal wiring within the rack or switch for conductive connections. However, since these power supplies are primarily for external circuitry and are typically used infrequently, they require high stability in installation and power connection. The parallel multi-row connectors often become entangled with surrounding output terminals due to various wiring configurations. Unplugging adjacent output terminals can easily affect the stability of the wiring harness at the power supply terminal, especially since multi-row connectors often lack corresponding isolation structures. Furthermore, when installed with the rack or switch, only the exposed metal sections of equal length arranged side-by-side are visible for wiring, making incorrect connections and potential faults easy to occur. Summary of the Invention

[0005] To address the problems of existing technologies, this invention provides an integrated input terminal. Before the device leaves the factory, a highly distinguishable guide strip is installed to differentiate the circuits. At the same time, a corresponding internal docking structure is provided to quickly form a connection. This can replace the wiring method, and the fixed conductive structure can be directly plugged in to achieve conductivity.

[0006] The technical solution adopted in this invention is as follows:

[0007] In a first aspect, the present invention provides an input terminal that is inserted onto the same end face of a switch or cabinet as several output terminals and connected to an internal circuit to supply power to the several output terminals. The input terminal includes a housing and at least two sets of guide bars disposed within the housing. The housing includes an insertion part that is inserted into a socket of the switch or cabinet and an outer end that protrudes from the socket. The guide bars have an end that protrudes from the insertion part and is electrically connected to the internal circuit. The ends are exposed and the length of the end of each guide bar is different. The internal circuit contacts and conducts electricity with the exposed end of each guide bar.

[0008] The outer end of the housing is provided with a wire insertion hole corresponding to each group of guide strips. A wire connector is provided in the wire insertion hole. The conductive end of the wire bundle entering the wire insertion hole is pressed against the end of the guide strip away from the insertion part to form a conductive contact through the wire connector.

[0009] The outer end of the housing is also provided with an adjustment hole corresponding to each plug hole. An external tool is inserted into the adjustment hole and cooperates with the movable clamping block of the connector to perform the wire clamping operation.

[0010] It should be noted that the input terminal in this invention is an independent plug-in fixed connector used to provide a port for connecting the internal circuitry of a cabinet or switch to an external circuitry. When inserted, it precisely aligns with the socket of the cabinet or switch for a secure connection. The housing of the fixed input terminal is divided into an outer end and an insertion part based on the socket end face. The outer end serves as the part connecting to the external circuitry, and the provided insertion hole is the connection end. This integrated input terminal, after the insertion part is fully inserted into the socket of the cabinet or switch and secured, has exposed current-carrying strips that contact and conduct electricity with the mating structure inside the cabinet or switch. The entire input terminal has at least two sets of current-carrying strips, each set including two strips, i.e., a positive and a negative pole, or two ends forming a loop for connecting AC power. All sockets of the cabinet or switch are located on the same end face, which has several output terminals for loading external electrical equipment. There is only one input terminal, located at the socket at the end.

[0011] In conjunction with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the portions of the guide strips that protrude from the insertion portion are all sheet structures of the same thickness and width, and a slot is provided in the socket of the cabinet or switch to engage each guide strip, wherein an elastic conductive sheet is provided in the slot to abut against the end of the guide strip that protrudes from the insertion portion.

[0012] In conjunction with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein a plurality of positioning slots are provided on the surface where the thickness of the guide strip is located along the length direction of the guide strip, and an elastic conductive sheet provided in each slot has an extension portion facing the insertion side of the guide strip and covering the guide strip, and the extension portion has a protrusion corresponding to the positioning slot, and the protrusion is embedded in the positioning slot to form a snap-fit ​​fixation.

[0013] In conjunction with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the extension of the elastic conductive sheet is a plurality of annular clips fixed inside the cabinet or switch for insertion of corresponding guide strips, and the annular clips are electrically connected to the elastic conductive sheet through a metal conductor.

[0014] In conjunction with the first embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the insertion portion of the housing has an insulating isolation strip that separates the two sets of guide strips, the length of the insulating isolation strip being greater than the length of the longest guide strip.

[0015] In conjunction with the first embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the insertion portion of the housing has an insulating isolation strip that separates two sets of guide strips, the guide strips include four strips arranged in parallel at equal intervals, the insulating isolation strip has a cross-shaped cross section at the starting end near the root of the insertion portion, the insulating isolation strip extends outward from the center position of the four guide strips near the root of the insertion portion along the guide strips in four plates connected in a cross shape, and at the end where the extension of each guide strip stops, there is at least one plate that stops extending.

[0016] In conjunction with the fifth embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein a positioning groove for a corresponding insulating isolation strip is provided in the socket of a cabinet or switch, the positioning groove having a cross-shaped slot for accommodating the insertion of the insulating isolation strip, and the insulating isolation strip being inserted into the positioning groove to form a snap-fit ​​limit.

[0017] In conjunction with the first aspect or several embodiments of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the outer end of the housing includes two sets of first and second wire insertion holes arranged in a stepped manner along the insertion direction of the housing, and the first wire insertion holes are close to the insertion part.

[0018] The second insertion hole is perpendicularly adjacent to the adjustment hole corresponding to the first insertion hole. A wire clamp is provided outside the second insertion hole. The wire clamp fits against the end face of the second insertion hole when inserting / removing the wire harness, and has two through holes for the wire harness to pass through.

[0019] A wire pressing area is provided on the same end face as the second insertion hole. When the wire harness is inserted into the second insertion hole and fixed, the wire presser is displaced relative to the housing and, while keeping the wire harness passing through the wire presser, bends the wire harness and pushes it toward the wire pressing area away from the adjustment hole of the first insertion hole. The wire presser has an end that engages with the housing. When the end of the wire presser engages with the housing, the wire harness inserted into the second insertion hole is pressed by the wire presser and extends outward in a direction perpendicular to the second insertion hole. The wire harness forms a bending buffer part bound by the wire presser in the wire pressing area.

[0020] In conjunction with the seventh embodiment of the first aspect, the present invention provides an eighth embodiment of the first aspect, wherein the wire clamp is rotatably connected to the housing, and the wire clamp has a sliding wire clamping rod that is slidably connected to the wire clamp. When the wire clamp clamps the wire bundle toward the wire clamping area, it pushes the sliding wire clamping rod to reduce the cross-section of the wire bundle passing through the through hole of the wire clamp and bends the wire bundle against the wire clamping area.

[0021] In conjunction with the first aspect or several embodiments of the first aspect, the present invention provides a ninth embodiment of the first aspect, wherein the housing includes a main body and an upper cover and a lower cover that are fastened to each other on both sides of the main body, and each side of the main body is provided with a set of mounting grooves for placing guide strips, and the guide strips disposed in the mounting grooves are limited by the fastening of the upper cover and the lower cover;

[0022] Each mounting slot has two sets of vertically connected adjustment holes and wiring holes at its outer end. The connector is located at the end of the mounting slot and has a movable pressure block facing the adjustment hole and a wiring port facing the wiring hole.

[0023] The main body is rotatably connected to a cover at each set of adjustment holes, and the cover is rotated and locked to cover the adjustment holes.

[0024] The main body has a safety groove at one end relative to the insertion hole, and a safety module housing is provided on the safety groove. A fuse connected in series with each set of guide strips is provided in the safety groove.

[0025] The beneficial effects of this invention are as follows:

[0026] (1) The present invention has an integrated shell structure, which is divided into an insertion part and an outer end. After being snapped into the cabinet or switch, it can directly connect with the internal circuit of the cabinet or switch through two sets of internally allocated guide strips to form a distinction, thereby improving the efficiency and safety of disassembly and assembly.

[0027] (2) By setting the guide strip to an unequal length structure and cooperating with the structure provided inside the cabinet or switch, the present invention achieves socketing and limiting fixation, improves connection stability and the separation between different circuits, and by optimizing the cooperation relationship between the elastic conductive sheet and the guide strip, it can also provide multiple guarantees for the conductive connection relationship.

[0028] (3) By setting a cross-shaped insulating isolation strip structure between the guide strips, the present invention can not only separate each guide strip, but also avoid short circuits between adjacent guide strips during insertion or disassembly under the requirements of limited space and low cost. At the same time, in conjunction with the positioning groove, it can also provide better guidance and limiting effect for access terminals with a certain length inserted into the cabinet or switch. It can also increase the isolation effect between each guide strip and form a separate channel for each guide strip, thereby further improving its stability.

[0029] (4) The present invention first optimizes the setting relationship between the two sets of plug holes and adjustment holes at the outer end, and avoids the insertion position of the wire harness by setting in a stepped manner. At the same time, it can arrange the position of the adjustment hole corresponding to the plug hole as compactly as possible. Furthermore, through the provided wire clamping structure, the wire harness led out of the plug hole is bent outward as much as possible in this stepped plug hole layout in a low-cost manner, and has a bent buffer part, which further improves the connection stability between the wire harness and the plug hole. When the wire harness is pulled once, the bending buffer part provides a buffering effect to avoid directly affecting the connection state with the plug hole.

[0030] (5) The present invention also optimizes the overall structure by setting up an upper cover, a lower cover and a main structure, so as to facilitate the installation and disassembly and replacement of the two sets of four guide strip structures. Furthermore, a safety module is set on the other side of the main body, which indicates the status of the fuses in the two circuits through the indicator lights inside. Attached Figure Description

[0031] Figure 1 This is an isometric view of the unpressed state using the first pressing scheme in an embodiment of the present invention;

[0032] Figure 2 This is an isometric view of the wire-pressing state using the first wire-pressing scheme in an embodiment of the present invention;

[0033] Figure 3 This is a plan view of the wire harness being fixed under the first wire pressing scheme in an embodiment of the present invention.

[0034] Figure 4 This is an isometric view of the unpressed state using the second pressing scheme in an embodiment of the present invention;

[0035] Figure 5 This is an isometric view of the wire-pressing state under the second wire-pressing scheme in an embodiment of the present invention;

[0036] Figure 6 This is a planar schematic diagram of the exploded state of the input terminal in an embodiment of the present invention;

[0037] Figure 7 This is a first isometric view of the exploded state of the input terminal in an embodiment of the present invention;

[0038] Figure 8 This is a second isometric view of the explosion state of the input terminal in an embodiment of the present invention.

[0039] In the diagram: 1-Main body, 2-Upper cover, 3-Lower cover, 4-Fuse module housing, 5-Status indicator light, 6-Adjustment hole, 7-First insertion hole, 8-Second insertion hole, 9-Wire clamp, 10-Guide strip, 11-Baffle, 12-Wire clamping area, 13-Snap-fit ​​fixing block, 14-Sliding wire clamping rod, 15-Connector, 16-Insulating isolation strip, 17-Wire harness, 18-Fuse. Detailed Implementation

[0040] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0046] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] This embodiment discloses an input terminal, specifically one installed on a cabinet or switch with multiple ports for line management. The connected circuits include power supply circuits and signal circuits. The input terminal in this embodiment mainly has two sets of lines, namely two loops connected to four interfaces, as detailed below:

[0048] The input terminal includes a housing structure, within which four guide strips 10 are disposed. In this embodiment, the guide strips 10 are metal sheets with length, width, and height decreasing sequentially, and the length being more than ten times the width, and the width being more than five times the thickness. Corresponding guide strips 10 are provided inside the socket of the cabinet or switch.

[0049] The housing is divided into an insertion section and an outer section based on the connector end face for insertion into a switch or cabinet. The insertion section is smaller than the outer section, and the outer section has an annular end face at the connection point with the insertion section. When the access terminal is inserted into the corresponding connector, this annular end face can abut against the surface of the connector edge. The outer section surface is also provided with a resiliently deformable snap-fit ​​fixing block 13. When the access terminal is inserted into the connector, the snap-fit ​​fixing block 13 is located inside the connector and aligns with the slot provided on the inner end face of the connector to form a limiting position. Thus, the snap-fit ​​fixing block 13 detachably and limitingly connects the entire housing to the switch or cabinet.

[0050] The guide bar 10 has an end that extends out of the insertion part and is electrically connected to the internal circuit. The end is exposed and the length of the end of each guide bar 10 is different. The internal circuit contacts and conducts electricity with the exposed end of each guide bar 10.

[0051] Reference Figures 1-5The diagram shows the external structure of a combined input terminal. Two sets of insertion holes are located on the outer end, and each set of insertion holes has an adjustment hole 6 on a vertically adjacent surface. A connector 15, a rectangular metal structure, is installed inside each insertion hole and is electrically connected to the guide strip 10. A movable pressure block, which in this embodiment is a screw structure, is threaded into the connector 15. Rotating the movable pressure block can compress and press the conductor inserted into the connector 15, or pull the two mutually sliding connecting parts of the connector 15 to move relative to each other, thereby reducing the gap and clamping and fixing the conductor inserted into the gap.

[0052] Regarding the structure of the guide strip 10, this embodiment optimizes and limits its design, referring to... Figure 7 and Figure 8 The exploded structural diagram shown illustrates that the portions of the guide strips 10 extending beyond the insertion section are all sheet structures of uniform thickness and width. One portion is fixed within the housing and electrically connected to the corresponding connector 15, while the other portion extends through the housing and enters the cabinet or switch to connect to the internal circuitry. To distinguish them, each guide strip 10 has a different length, and its end is provided with openings and numbers. The openings facilitate wire routing, and the numbers distinguish the corresponding insertion holes, allowing for internal wiring connections.

[0053] In this embodiment, the guide strip 10 is directly connected to the conductive structure inside the cabinet or switch. Specifically, the cabinet or switch has a connection structure corresponding to each guide strip 10, i.e., a slot for each guide strip 10. The slot contains an elastic conductive sheet that abuts against the end of the guide strip 10 that protrudes from the insertion part. Furthermore, on the surface of the guide strip 10 along its thickness direction, several positioning slots are provided along its length. Each slot contains an elastic conductive sheet with an extension facing the insertion side of the guide strip 10 and enclosing it. The extension has a protrusion corresponding to the positioning slot, which is then inserted into the positioning slot to form a snap-fit ​​fixation.

[0054] Reference Figure 1 As shown in the figure, several positioning slots are staggered on the upper and lower narrow and long surfaces of each guide strip 10 to match the protruding structure of the extension. This achieves the effect of locking and limiting, and also provides a segmented insertion feel, making it easy to determine the insertion depth during installation.

[0055] Furthermore, the extension of the elastic conductive sheet is a number of annular clips fixed inside the cabinet or switch for insertion into the corresponding guide strip 10. The annular clips are electrically connected to the elastic conductive sheet through a metal conductor.

[0056] Furthermore, in order to improve the separation between the four guide strips 10, this embodiment provides a dedicated isolation structure within the housing, as shown in the reference. Figures 1-5 In the middle, the insertion part of the housing has an insulating isolation strip 16 that separates the two sets of guide strips 10, and the length of the insulating isolation strip 16 is greater than the length of the longest guide strip 10.

[0057] The insertion part of the housing has an insulating isolation strip 16 that separates the two sets of guide strips 10. The guide strips 10 include four strips that are equally spaced and parallel. The insulating isolation strip 16 has a cross-shaped cross section at the starting end near the root of the insertion part. The insulating isolation strip 16 extends outward from the center position of the four guide strips 10 near the root of the insertion part along the guide strips 10 in four plates connected in a cross shape. At the end where the extension of each guide strip 10 stops, there is at least one plate that stops extending.

[0058] Reference Figure 8 As can be seen, the end of the final insulating barrier 16 is L-shaped, with the two plates shortened to correspond to the two shorter guide strips 10. The length of the insulating barrier 16 is less than the length of the longest guide strip 10, and its two plates extend to the end of the second longest guide strip 10 before stopping. At this point, the longest guide strip 10 and the second longest guide strip 10 are completely separated, and there is no need to set a longer insulating barrier 16 for isolation.

[0059] Meanwhile, in order to achieve better positioning and guidance, a positioning groove corresponding to the insulating isolation strip 16 is provided in the socket of the cabinet or switch. The positioning groove has a cross-shaped slot to accommodate the insertion of the insulating isolation strip 16. The insulating isolation strip 16 is inserted into the positioning groove to form a snap-fit ​​limit.

[0060] Furthermore, refer to Figures 1-8 This embodiment adopts a split input terminal structure, wherein the housing includes a main body 1 and an upper cover 2 and a lower cover 3 that are fastened to each other on both sides of the main body 1. Each side of the main body 1 is provided with a set of mounting grooves for placing the guide strip 10. The guide strip 10 set in the mounting groove is limited by the fastening of the upper cover 2 and the lower cover 3.

[0061] Each mounting slot has two sets of vertically connected adjustment holes 6 and wire insertion holes at its outer end. The connector 15 is located at the end of the mounting slot and has a movable pressure block facing the adjustment hole 6 and a wiring port facing the wire insertion hole.

[0062] The main body 1 has a cover 11 rotatably connected to each set of adjustment holes 6, which rotates and closes to cover the adjustment holes 6. A safety groove is provided on the end of the main body 1 opposite to the insertion hole, and a safety module housing 4 is provided on the safety groove. A fuse 18 connected in series with each set of guide strips 10 is provided inside the safety groove. A status indicator light 5 is also provided inside the safety groove. An opening is provided on the safety module housing 4 to expose the status indicator light 5, allowing for easy viewing of the status of the fuse 18 corresponding to the status indicator light 5 from the outside. A flashing red light indicates that one fuse 18 has blown, while a solid red light indicates that both fuses 18 have blown and need to be replaced.

[0063] Reference Figure 8 The fuse 18 in the fuse slot is fixed by a snap-fit ​​method. As not shown in the figure, there are two sets of contacts in the fuse slot, which are connected to two fuses 18 respectively, and are used to connect the fuses 18 in series into the corresponding circuit.

[0064] It is worth noting that, referring to Figure 1 In this embodiment, the outer end face of the input terminal faces the end face of the adjacent output terminals. Generally, the wiring harness 17 of the output terminal runs perpendicular to the direction of the insertion hole of the access terminal in this embodiment. This arrangement is because the main input line requires high stability. To differentiate it from the excessive front wiring in the cabinet or among several switches, different entry directions are used to provide differentiation. However, since this terminal is different from the output terminal and requires high connection stability, a bolt-type wire connection is used, i.e., the adjustment hole 6 faces outward, and the wire enters from the side, unlike the output terminal where the operating end and the entry end are on the same end face. However, since two lines are connected, a special interface arrangement is used, as follows:

[0065] The outer end of the housing includes two sets of first insertion holes 7 and second insertion holes 8 arranged in a stepped manner along the insertion direction of the housing. The first insertion hole 7 is close to the insertion part. The second insertion hole 8 is perpendicularly adjacent to the adjustment hole 6 corresponding to the first insertion hole 7. A wire clamp 9 is provided outside the second insertion hole 8. The wire clamp 9 fits against the end face of the second insertion hole 8 when inserting / removing the wire harness 17 into the second insertion hole 8, and has two through holes for the wire harness 17 to pass through.

[0066] A wire pressing area 12 is provided on the same end face as the second insertion hole 8. When the wire harness 17 is inserted into the second insertion hole 8 and fixed, the wire pressing device 9 is displaced relative to the housing and, while keeping the wire harness 17 passing through the wire pressing device 9, bends the wire harness 17 and pushes it toward the wire pressing area 12 away from the adjustment hole 6 of the first insertion hole 7. The wire pressing device 9 has an end that engages with the housing. When the end of the wire pressing device 9 engages with the housing, the wire harness 17 inserted into the second insertion hole 8 is pressed by the wire pressing device 9 and extends outward in a direction perpendicular to the second insertion hole 8. The wire harness 17 forms a bending buffer part bound by the wire pressing device 9 in the wire pressing area 12.

[0067] As one implementation method, refer to Figure 4 and Figure 5 The wire presser 9 is a simple sliding connection method. A sliding groove is provided at the corresponding position of the upper cover 2 and the lower cover 3. A slider is provided on the upper and lower edges of the wire presser 9 and is inserted into the corresponding sliding groove for sliding connection. The slider itself also has a rotating shaft, so that the wire presser 9 with the slider can rotate around the rotating shaft to a certain extent.

[0068] exist Figure 4 As can be seen, when the cover 11 of the adjustment hole 6 corresponding to the second insertion hole 8 is opened, the wire clamp 9 is attached to the surface of the second insertion hole 8. At this time, the wire harness 17 is inserted into the second insertion hole 8, and the wire harness 17 passes through the two through holes of the wire clamp 9 at the same time.

[0069] Then, using an Allen wrench inserted into the adjustment hole 6, the conductive portion of the inserted wire harness 17 is pressed and fixed. The cover 11 is then placed on top, and the wire clamp 9 is pulled. First, it is rotated at a certain angle, turning the arc-shaped portion on the left side of the clamp as shown in the diagram outwards. Then, the wire clamp 9 is slid towards the clamping area 12, finally moving to... Figure 5 After reaching the desired state, the moving end of the wire clamp 9 is secured by a snap-fit ​​structure (not shown in the figure). As the entire wire clamp 9 moves toward the wire clamping area 12, the wire harness 17 passing through the through hole of the wire clamp 9 is pulled and dragged to one side of the wire clamping area 12 by the arc-shaped part. This effectively moves the wire harness 17 towards the front, avoiding the area of ​​the adjustment hole 6 of the first insertion hole 7, and also bends the wire harness 17 towards the front, forming a bend. Since the wire clamp 9 presses part of it against the wire clamping area 12, pulling the wire harness 17 from the outside will first be restricted by the wire clamp 9, improving its connection stability.

[0070] As one implementation method, refer to Figures 1-3The wire clamp 9 is rotatably connected to the housing. The wire clamp 9 has a sliding wire clamping rod 14 that is slidably connected to it. When the wire clamp 9 binds the wire harness 17 toward the wire clamping area 12, it pushes the sliding wire clamping rod 14 to reduce the cross-section of the wire harness 17 passing through the through hole of the wire clamp 9 and bends the wire harness 17 against the wire clamping area 12. Not shown in the figure, a snap-fit ​​structure for locking and fixing the wire clamp 9 is provided at the rotation point of the cover 11 corresponding to the second insertion hole 8. This snap-fit ​​structure can release the already connected wire clamp 9 by pressing against it from one side. That is, only when the cover 11 is closed can the wire clamp 9 be flipped to clamp the wire harness 17 toward the wire clamping area 12. At this time, the sliding wire clamping rod 14 is moved to bind the wire harness 17, and the end of the wire clamp 9 can be fixedly connected to the snap-fit ​​structure. When it is necessary to operate the wire harness 17 in the first insertion hole 7, opening the cover 11 corresponding to the first insertion hole 7 will not affect the operation of the cover 11 and the adjustment hole 6 corresponding to the first insertion hole 7. The wire clamp 9 can completely bind and press the wire harness 17 within the clamping area 12. When it is necessary to dispose of the wire harness 17 in the second insertion hole 8, simply rotate the cover 11 corresponding to the second insertion hole 8. At this time, the cover 11 will contact the locking structure, and the locking structure will be triggered to release the wire clamp 9 during the continuous action of opening the cover 11. Due to the torsion spring or the elastic potential energy of the wire harness 17 itself, the wire clamp 9 will automatically reset and release the wire harness 17 after release. At this time, the movable clamping block in the adjustment hole 6 can be rotated to release the wire harness 17 inserted into the second insertion hole 8.

[0071] Furthermore, in the two embodiments described above, the wire clamp 9 can also be linked with the cover 11. That is, through a connecting rod, pull rope, or other means, the wire clamp 9 and the cover 11 corresponding to the second insertion hole 8 can be linked to form a transmission relationship. When the cover 11 is opened, the wire clamp 9 remains attached to the end face of the second insertion hole 8, without affecting the passage of the wire harness 17 inserted into the second insertion hole 8. When the cover 11 is rotated, the wire clamp 9 is rotated together, thereby bending and constraining the wire harness 17. It is only necessary to provide a snap-fit ​​limiting structure for the cover 11 at the adjustment hole 6 to fix the cover 11 so that the wire clamp 9 can always bind the wire harness 17.

[0072] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. An input terminal, which, along with a plurality of output terminals, is inserted onto the same end face of a switch or cabinet and connected to an internal circuit to supply power to the plurality of output terminals, characterized in that: Includes a housing and at least two sets of guide strips (10) disposed within the housing. The housing includes an insertion part for inserting into a switch or cabinet socket and an outer end protruding outside the socket. The guide strips (10) have an end that extends out of the insertion part and is electrically connected to the internal circuit. The ends are exposed and the length of the end of each guide strip (10) is different. The internal circuit contacts and conducts electricity with the exposed end of each guide strip (10). The outer end of the housing is provided with a wire insertion hole corresponding to each group of guide strips (10). A wire connector (15) is provided in the wire insertion hole. The conductive end of the wire bundle (17) entering the wire insertion hole is pressed with the end of the guide strip (10) away from the insertion part to form a conductive contact through the wire connector (15). The outer end of the housing is also provided with an adjustment hole (6) corresponding to each wire insertion hole. An external tool is inserted into the adjustment hole (6) and cooperates with the movable pressure block of the wire connector (15) to perform wire pressing operation. The outer end of the housing includes two sets of first insertion holes (7) and second insertion holes (8) arranged in a stepped manner along the insertion direction of the housing, with the first insertion holes (7) close to the insertion part; The second insertion hole (8) is perpendicularly adjacent to the adjustment hole (6) corresponding to the first insertion hole (7). A wire clamp (9) is provided outside the second insertion hole (8). The wire clamp (9) fits against the end face of the second insertion hole (8) when inserting / removing the wire harness (17) into the second insertion hole (8), and has two through holes for the wire harness (17) to pass through. A wire pressing area (12) is provided on the same end face as the second insertion hole (8). When the wire harness (17) is inserted into the second insertion hole (8) and fixed, the wire presser (9) is displaced relative to the housing and, while keeping the wire harness (17) passing through the wire presser (9), bends the wire harness (17) and pushes it toward the wire pressing area (12) away from the adjustment hole (6) of the first insertion hole (7). The wire presser (9) has an end that engages with the housing. When the end of the wire presser (9) engages with the housing, the wire harness (17) inserted into the second insertion hole (8) is pressed by the wire presser (9) and extends outward in a direction perpendicular to the second insertion hole (8). The wire harness (17) forms a bent buffer part bound by the wire presser (9) in the wire pressing area (12). The wire clamp (9) is rotatably connected to the housing. The wire clamp (9) has a sliding wire clamping rod (14) that is slidably connected to the wire clamp (9). When the wire clamp (9) binds the wire bundle (17) toward the wire clamping area (12), it pushes the sliding wire clamping rod (14) to reduce the cross-section of the wire bundle (17) passing through the wire clamp (9) and bends the wire bundle (17) against the wire clamping area (12). A snap-fit ​​structure for snapping and fixing the wire clamp (9) is provided at the rotation point of the cover (11) corresponding to the second insertion hole (8). The snap-fit ​​structure releases the already connected wire clamp (9) by pressing against it from one side. When the cover (11) is on, the wire clamp (9) can flip to clamp the wire harness (17) toward the wire clamping area (12). At this time, the sliding wire clamping rod (14) is moved to bind the wire harness (17). The end of the wire clamp (9) is fixedly connected to the snap-fit ​​structure. Under the action of the torsion spring or the elastic potential energy of the wire harness (17) itself, the wire clamp (9) will automatically reset and release the wire harness (17) after release. The linkage between the wire clamp (9) and the cover (11) of the corresponding second insertion hole (8) forms a transmission relationship. When the cover (11) is opened, the wire clamp (9) remains attached to the end face of the second insertion hole (8) and does not affect the wire harness (17) inserted into the second insertion hole (8) from passing through. When the cover (11) is rotated, the wire clamp (9) is rotated together to bend and constrain the wire harness (17).

2. An input terminal according to claim 1, characterized in that: The portion of each guide strip (10) that protrudes from the insertion part is a sheet structure of the same thickness and width. Each guide strip (10) is provided with a slot in the socket of the cabinet or switch. The slot is provided with an elastic conductive sheet that abuts against the end of the guide strip (10) that protrudes from the insertion part.

3. An input terminal according to claim 2, characterized in that: The surface of the guide strip (10) where the thickness is located is provided with a number of positioning slots along the length of the guide strip (10). Each slot has an elastic conductive sheet with an extension that faces the guide strip (10) and covers the guide strip (10). The extension has a protrusion corresponding to the positioning slot. The protrusion is embedded in the positioning slot to form a snap-fit ​​fixation.

4. An input terminal according to claim 3, characterized in that: The extension of the elastic conductive sheet is a number of ring-shaped clips fixed inside the cabinet or switch for the insertion of corresponding guide strips (10). The ring-shaped clips are electrically connected to the elastic conductive sheet through a metal conductor.

5. An input terminal according to claim 2, characterized in that: The insertion portion of the housing has an insulating isolation strip (16) that separates the two sets of guide strips (10), the length of which is greater than the length of the longest guide strip (10).

6. An input terminal according to claim 2, characterized in that: The insertion part of the housing has an insulating isolation strip (16) that separates the two sets of guide strips (10). The guide strips (10) include four strips that are equally spaced and arranged in parallel. The insulating isolation strip (16) has a cross-shaped cross section at the starting end near the root of the insertion part. The insulating isolation strip (16) extends outward from the center position of the four guide strips (10) near the root of the insertion part along the guide strips (10) in four plates connected in a cross shape. At the end where each guide strip (10) stops extending, there is at least one plate that stops extending.

7. An input terminal according to claim 6, characterized in that: A positioning groove for a corresponding insulating isolation strip (16) is provided in the socket of the cabinet or switch. The positioning groove has a cross-shaped slot for accommodating the insertion of the insulating isolation strip (16). The insulating isolation strip (16) is inserted into the positioning groove to form a snap-fit ​​limit.

8. An input terminal according to any one of claims 1-7, characterized in that: The housing includes a main body (1) and an upper cover (2) and a lower cover (3) that are fastened to each other on both sides of the main body (1). Each side of the main body (1) is provided with a set of mounting grooves for placing the guide strip (10). The guide strip (10) set in the mounting groove is limited by the fastening of the upper cover (2) and the lower cover (3). Each mounting slot has two sets of vertically connected adjustment holes (6) and wire insertion holes at its outer end. The connector (15) is located at the end of the mounting slot and has a movable pressure block facing the adjustment hole (6) and a wiring port facing the wire insertion hole. The main body (1) is rotatably connected with a cover (11) at each set of adjustment holes (6), and the cover (11) rotates and fastens to cover the adjustment holes (6); The main body (1) has a safety groove at one end relative to the plug hole, and a safety module housing (4) is provided on the safety groove. A fuse (18) connected in series on each set of guide strips (10) is provided in the safety groove.

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