Buckle type parallel connection terminal

Abstract

The invention relates to the field of terminals, and discloses a buckle type parallel connection terminal, which comprises a shell, and two opposite ends of the shell are respectively provided with a connection port; the mounting frames are arranged on the two sides, without the connecting ports, of the shell; the operating rod is hinged to the mounting frame, and the two ends of the operating rod are divided into an operating end and a clamping end by taking a hinge point as a boundary; the clamping end is used for being clamped with a to-be-mounted component so as to realize mounting or dismounting; rapid installation and disassembly are achieved through rotation of the operating rod, the influence of a traditional installation mode on original electric quantity collection is avoided, the problems of circuit shaking, protection device failure or misoperation and the like caused by installation and disassembly in the prior art are solved, and disassembly-free and lossless parallel connection with original body terminals is achieved. And the operating rod is rotatably connected with the mounting frame and the clamping groove is in limiting fit with the clamping rod, so that the mounting stability is improved, and the stability of the terminal after mounting is ensured.

Description

Technical Field

[0001] The present invention relates to the field of terminals, in particular to a snap-on parallel connection terminal. Background Art

[0002] During the operation of the substation, the secondary equipment has been in service for an extended period, resulting in reduced equipment safety and posing a great threat to power supply reliability. The secondary equipment needs to be replaced and upgraded. Conventional upgrades and renovations of secondary protection and measurement and control devices are usually carried out when the primary operating mechanism is disconnected and the secondary circuit is not energized. Due to the load users' demand for continuous power supply, primary equipment power outages are not allowed. At this time, it is necessary to introduce a temporary secondary protection and measurement and control device during the renovation period to provide protection for the primary equipment during the removal of the old protection and measurement and control device, so as to ensure that the secondary protection equipment is not missing during the renovation and upgrade process. Therefore, there is a sharing of secondary circuits between the transitional protection and measurement and control device and the old protection device. There are usually two ways to achieve parallel connection of electrical quantities at the original terminal:

[0003] 1. A new set of wires is added to the original terminal wiring hole. The implementation of this method requires the original terminal to be disconnected, which affects the reliability of the old protection and control device in collecting electrical quantity signals. Figure 11 Taking terminal 01 as an example, the left side of the terminal is the primary mechanism cable, and the right side of the terminal is the secondary cable of the protection and measurement and control device. When a new set of wires is added to this connection point, the BH-1 cable on the right side of terminal 01 needs to be disconnected and then a new set of wires needs to be connected in parallel. This process will cause a loose connection or jitter between the BH-1 terminal and the main terminal.

[0004] 2. Use the patent application CN201521083033.3 above the original body terminal, and connect it with the original body terminal by screwing it with the middle bolt. When the original body terminal on site has "one input and multiple outputs" wiring, the original body terminal short-circuit guide needs to be disassembled. Figure 12 The secondary wiring terminals receive wires through 1N-1, and their outputs are used by secondary protection and measurement devices BH-1, BH-2, and BH-3. These three terminals are short-circuited via terminals 00A, 00B, and 00C. During installation using patent application CN201521083033.3, the shorting conductor studs 00A, 00B, and 00C must be disconnected. This operation will affect the electrical measurement data collected from the BH-1, BH-2, and BH-3 conductors on the right secondary protection device.

[0005] Therefore, the installation of existing terminal parallel connection technology products will affect the collection of circuit electrical quantities by the original secondary protection measurement and control device. That is, during the disassembly process, the loose connection of the circuit connector will cause circuit jitter, which may cause the secondary protection device to fail or the secondary relay protection device to malfunction. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is that the installation of existing terminal parallel connection technology products affects the collection of circuit electrical quantities by the original secondary protection measurement and control device, that is, during the disassembly process, the loose connection of the circuit connector will cause circuit jitter, which may cause the secondary protection device to fail or the secondary relay protection device to malfunction.

[0007] The above technical problem is solved by the following technical solution: The present invention proposes a snap-on parallel terminal, which includes:

[0008] a housing, wherein two opposite ends of the housing are respectively provided with connection ports;

[0009] A mounting frame, the mounting frame being arranged on both sides of the housing where no connection port is provided;

[0010] An operating lever, the operating lever being hinged to the mounting frame, and having two ends divided by a hinge point into an operating end and a clamping end; the clamping end is used to clamp with the component to be mounted to achieve installation or removal;

[0011] When the operating lever is in the first position, the engaging end engages with the component to be installed, enabling installation; when the operating lever is in the second position, the engaging end separates from the component to be installed, enabling removal. By controlling the operating end of the operating lever, the operating lever is rotated about the hinge point, and the specific position of the operating lever is adjusted. When the operating lever is in the first position, it engages with the component to be installed, and when the operating lever is in the second position, it separates from the component to be installed.

[0012] In a preferred embodiment of the snap-on parallel terminal of the present invention, the operating lever is rotatable about a hinge point between a first position and a second position. When the operating end of the operating lever is away from the housing relative to the snap-on end, the operating lever is in the first position; when the operating end of the operating lever is closer to the housing relative to the snap-on end, the operating lever is in the second position. The switching between the first and second positions of the operating lever is adjusted by changing the positional relationship between the operating end and the snap-on end.

[0013] In a preferred embodiment of the snap-on parallel connection terminal of the present invention, the snap-on end is bent toward the housing to form a snap, and the snap-on end is a hook-shaped structure for engaging with a groove of the component to be installed; the snap-on end is closer to the component to be installed than the operating end, and the operating end is farther away from the component to be installed than the snap-on end. By bending the snap-on end toward the housing to form a snap, a snap connection with the component to be installed is achieved, and the specific positional restrictions between the operating end and the snap-on end improve the operator's convenience in operating the device.

[0014] In a preferred embodiment of the snap-on parallel terminal of the present invention, a support rod is fixedly connected to a side of the mounting frame proximate to the operating rod, a sleeve is fixedly connected to the interior of the operating rod, and the sleeve is sleeved outside the support rod to achieve a rotational connection between the operating rod and the mounting frame. Alternatively, the support rod may be fixedly connected to the exterior of the operating rod while the sleeve is fixedly connected to the interior of the mounting frame; any hinged connection method that allows for rotational connection between the operating rod and the mounting frame will suffice.

[0015] In a preferred embodiment of the snap-on parallel connection terminal of the present invention, the support rod includes an inner rod fixedly connected to the outside of the mounting frame, an outer rod fixedly connected to one end of the inner rod, and slots provided on the outer rod and the outside of the inner rod. The slots are elongated slots that pass through the outer rod and are provided inside the inner rod. The edge profile of the outer rod is larger than the edge profile of the inner rod. When the operating rod is installed on the mounting frame, it is necessary to squeeze the sleeve of the operating rod against the top of the outer rod. At this time, the squeezing force and the slots will force the outer rods to move closer together, so that the sleeve can be sleeved on the outside of the inner rod through the outer rod, thereby completing the installation of the operating rod and the mounting frame. At the same time, the larger edge profile of the outer rod can limit the sleeve sleeved on the outside of the inner rod, thereby improving the reliability of the structure after the operating rod and the mounting frame are installed.

[0016] In a preferred embodiment of the snap-on parallel terminal of the present invention, a slot is defined at one end of the mounting bracket remote from the component to be mounted, and a latching rod is fixedly connected to the outer side of the operating end of the operating lever, the latching rod engaging the slot to limit and secure the operating lever. The latching rod engaging the slot allows the operating lever to be fixed in position when in the first position, thereby ensuring secure engagement with the component to be mounted.

[0017] In a preferred embodiment of the snap-on terminal of the present invention, the slot comprises a circular hole and a guide surface, wherein the guide surface is an arcuate surface, and the connection between the guide surface and the circular hole is higher than the bottom end of the circular hole. The guide surface is used to guide the latching rod into the circular hole to achieve a limited position fixation of the operating rod. The guidance of the guide surface facilitates the operator to engage the latching rod with the circular hole. The connection between the guide surface and the circular hole is higher than the bottom end of the circular hole, which ensures the stability of the latching rod after engagement with the circular hole and prevents the latching rod from easily falling off.

[0018] In a preferred embodiment of the snap-on parallel terminal of the present invention: the connection ports at the opposite ends of the shell are respectively an external wire interface and a metal spring-type conductor probe, the external wire interface is used to connect to an external wire, and the shell is provided with through holes at both ends of the connection port; the through holes will not block the disconnection and maintenance of the secondary cables of the components to be installed.

[0019] The metal spring-type conductor probe comprises a spring and a conductive probe. The conductive probe is connected to the housing via the spring to achieve elastic contact. The metal spring-type conductor probe is positioned at one end of the housing near the component to be mounted. The external wire interface is used to connect to an external wire interface to lead out the electrical quantities after parallel connection. The metal spring-type conductor probe is used to contact the conductor of the component to be mounted to achieve the electrical quantity parallel connection function.

[0020] In a preferred embodiment of the snap-on terminal block of the present invention, a protrusion is fixedly connected to the outer side of the housing, and a groove is formed on the side of the housing opposite the protrusion; the protrusion and the groove engage with each other to assemble multiple sets of terminals. By assembling multiple sets of terminals, the operator can select different installation methods according to different situations.

[0021] In a preferred embodiment of the snap-on parallel terminal of the present invention, a through slot is provided at the operating end of the operating rod, a long rod is inserted into the through slot, and the long rod and the through slot are plugged in through a clearance fit;

[0022] The long rod is used to insert into the through slots of the operating ends of multiple sets of terminals to achieve connection of multiple sets of terminals. By inserting the long rod into the through slots of multiple sets of terminals, the coordinated cooperation of multiple sets of terminals can be achieved, and the selection can be made according to needs.

[0023] The beneficial effects of the present invention are: rapid installation and disassembly are achieved through the rotation of the operating lever, which avoids the influence of the traditional installation method on the original electrical quantity collection, solves the problems of circuit jitter, failure or malfunction of the protection device caused by installation and disassembly in the prior art, and realizes non-disassembly and lossless connection with the original terminal. The rotational connection between the operating lever and the mounting frame and the limiting cooperation between the card slot and the card rod improve the installation stability and ensure the stability of the terminal after installation. Multiple groups of terminals can be assembled to achieve collaborative operation, which improves the convenience and efficiency of installation and disassembly, and reduces the overall occupied space. The overall design simplifies the installation process, reduces the risk of misoperation, improves the practicality and reliability of the equipment, and is suitable for the installation and maintenance of electrical equipment in a variety of scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0025] Figure 1 A perspective view of the present invention is shown.

[0026] Figure 2 Another perspective view of the present invention is shown.

[0027] Figure 3 A partial structural front view of the present invention is shown.

[0028] Figure 4 A top view of a local structure of the present invention is shown.

[0029] Figure 5 The figure shows the overall structure diagram of the operating lever of the present invention.

[0030] Figure 6 A schematic diagram of the first position structure of the present invention is shown.

[0031] Figure 7 A schematic diagram of the second position structure of the present invention is shown.

[0032] Figure 8 A schematic diagram of the structure of the present invention after installation is completed is shown.

[0033] Figure 9 A schematic diagram of a multi-group assembly structure of the present invention is shown.

[0034] Figure 10 Another perspective diagram of the multi-group assembly structure of the present invention is shown.

[0035] Figure 11 A schematic diagram of the prior art is shown.

[0036] Figure 12 A second schematic diagram of the prior art is shown. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0038] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0039] Reference Figure 1 、 Figure 2 、 Figures 6 to 8 , this embodiment provides a snap-on parallel connection terminal, which includes,

[0040] The housing 1 has connection ports at opposite ends thereof;

[0041] Mounting brackets 2 are provided on both sides of the housing 1 where no connection ports are provided;

[0042] The operating lever 3 is hinged to the mounting frame 2 and has an operating end 31 and a clamping end 32 at both ends thereof, with the hinge point as the boundary. The clamping end 32 is used to clamp with the component to be mounted to achieve installation or removal;

[0043] When the operating lever 3 is in the first position, the engaging end 32 engages with the component to be installed, enabling installation. When the operating lever 3 is in the second position, the engaging end 32 separates from the component to be installed, enabling removal. By controlling the operating end 31 of the operating lever 3, the operating lever 3 is rotated about the hinge point to adjust the specific position of the operating lever 3. When in the first position, the operating lever 3 engages with the component to be installed, and when in the second position, the operating lever 3 separates from the component to be installed.

[0044] The operating lever 3 is rotatable about the hinge point between a first position and a second position. When the operating end 31 of the operating lever 3 is farther from the housing 1 relative to the engaging end 32, the operating lever 3 is in the first position. When the operating end 31 of the operating lever 3 is closer to the engaging end 32 than to the housing 1, the operating lever 3 is in the second position. By changing the positional relationship between the operating end 31 and the engaging end 32, the switching between the first and second positions of the operating lever 3 is adjusted.

[0045] The connection ports at the opposite ends of the shell 1 are respectively an external wire interface 11 and a metal spring-type conductor probe 12. The external wire interface 11 is used to connect to an external wire. The shell 1 is provided with a through hole 13 at both ends of the connection port. The through hole 13 will not block the disconnection and maintenance of the secondary cable of the component to be installed.

[0046] The metal spring-loaded conductor probe 12 comprises a spring and a conductive probe. The conductive probe is connected to the housing 1 via the spring to achieve elastic contact. The metal spring-loaded conductor probe 12 is positioned at the end of the housing 1 near the component to be mounted. The external wire interface 11 is used to connect to an external wire interface to lead out the electrical quantities after parallel connection. The metal spring-loaded conductor probe 12 is used to contact the conductor of the component to be mounted, achieving the electrical quantity parallel connection function.

[0047] The operator presses the operating end 31 of the operating rod 3 toward the housing 1 to place the operating rod 3 in the second position, and at the same time inserts the metal spring-type conductor probe 12 into the interface of the component to be installed. Then, the operator presses the operating end 31 of the operating rod 3 away from the housing 1. At this time, the operating rod 3 is in the first position, so that the clamping end 32 of the operating rod 3 can be engaged with the groove of the component to be installed, thereby completing the fixed installation of the terminal.

[0048] As an example provided, Figure 5 The snap-fit ​​end 32 bends toward the housing 1 to form a buckle. The buckle is a hook-shaped structure that mates with the slot of the component to be mounted. Compared to the operating end 31, the snap-fit ​​end 32 is closer to the component to be mounted, while the operating end 31 is farther away from the snap-fit ​​end 32. When the operating lever 3 is in the first position, the snap-fit ​​end 32 bends toward the housing 1 to form a buckle, thereby achieving a snap connection with the component to be mounted. Furthermore, the specific positioning of the operating end 31 and the snap-fit ​​end 32 improves the operator's convenience in operating the device.

[0049] As an example provided, Figures 3 to 5 The mounting frame 2 is fixedly connected to a support rod 21 on the side near the operating rod 3. A sleeve 33 is fixedly connected to the interior of the operating rod 3. The sleeve 33 is sleeved outside the support rod 21 to achieve a rotational connection between the operating rod 3 and the mounting frame 2. Alternatively, the support rod 21 can be fixedly connected to the outside of the operating rod 3 while the sleeve 33 is fixedly connected to the inside of the mounting frame 2; any hinged connection method that can achieve a rotational connection between the operating rod 3 and the mounting frame 2 is sufficient.

[0050] The support rod 21 includes an inner rod 211 fixedly connected to the outside of the mounting frame 2, an outer rod 212 fixedly connected to one end of the inner rod 211, and a notch 213 defined on the outer rod 212 and the outside of the inner rod 211. The notch 213 is an elongated notch extending through the outer rod 212 and extending within the inner rod 211. The outer rod 212 has a larger edge profile than the inner rod 211. When the operating rod 3 is installed on the mounting frame 2, the sleeve 33 of the operating rod 3 is pressed against the top of the outer rod 212. The pressure from the notch 213 forces the outer rod 212 to move closer together, allowing the sleeve 33 to be inserted through the outer rod 212 and onto the outside of the inner rod 211, thus completing the installation of the operating rod 3 on the mounting frame 2. Furthermore, the larger edge profile of the outer rod 212 serves to limit the position of the sleeve 33 inserted onto the outside of the inner rod 211, thereby improving the structural reliability of the operating rod 3 after installation on the mounting frame 2.

[0051] As an example provided, Figure 3 、 Figure 5 The mounting frame 2 has a slot 22 at one end away from the component to be mounted. A latching rod 34 is fixedly connected to the outer side of the operating end 31 of the operating rod 3. The latching rod 34 engages with the slot 22 to limit and fix the operating rod 3. By engaging the latching rod 34 with the slot 22, the operating rod 3 can be fixed in the first position, thereby ensuring stability after being locked with the component to be mounted.

[0052] The latching slot 22 consists of a circular hole 221 and a guide surface 222. The guide surface 222 is an arc-shaped surface, and the connection between the guide surface 222 and the circular hole 221 is higher than the bottom end of the circular hole 221. The guide surface 222 is used to guide the latching rod 34 into the circular hole 221 to achieve the limited position and fixation of the operating rod 3. The guidance of the guide surface 222 makes it easier for the operator to lock the latching rod 34 into the circular hole 221. The connection between the guide surface 222 and the circular hole 221 is higher than the bottom end of the circular hole 221, which ensures the stability of the latching rod 34 after being locked with the circular hole 221 and prevents the latching rod 34 from easily falling off.

[0053] As an example provided, Figure 9 、 Figure 10 A protrusion 14 is fixedly connected to the outer side of the housing 1, and a groove 15 is formed on the side of the housing 1 opposite the protrusion 14. The protrusion 14 and the groove 15 are engaged and clamped together for assembling multiple sets of terminals. By assembling multiple sets of terminals, the operator can easily choose different installation methods according to different situations. When installing multiple sets of terminals, the protrusion 14 and the groove 15 can be engaged to achieve the assembly and connection of multiple sets of terminals, which not only reduces the overall occupied space, but also ensures the stability of the multiple sets after installation.

[0054] As an example provided, Figure 9 、 Figure 10 The operating end 31 of the operating rod 3 is provided with a through slot 4, in which a long rod 5 is inserted, and the long rod 5 is connected to the through slot 4 through a clearance fit;

[0055] Among them, the long rod 5 is used to insert the through slot 4 of the operating end 31 of multiple sets of terminals to achieve the connection of multiple sets of terminals. By inserting the long rod 5 into the through slot 4 of multiple sets of terminals, the coordinated cooperation of multiple sets of terminals can be achieved, and it can be selected according to needs.

[0056] When multiple groups of terminals are installed, the long rod 5 is inserted into the through slots 4 of the multiple groups of terminals, so that the limiting forces of the multiple groups of terminal clamping rods 34 and the clamping slots 22 can be summarized. At this time, the force to unlock any terminal is the sum of the clamping limiting forces of the multiple groups of terminals, thereby avoiding the situation where a single terminal is easily accidentally touched and causes the connection to become loose, further improving the practicality of the equipment.

[0057] At the same time, during the overall disassembly process, the disassembly of multiple groups of terminals can be completed by operating the operating levers 3 of the terminals at the center of the multiple groups of terminals, without the need to disassemble them individually one by one.

[0058] Furthermore, during installation, multiple sets of terminals can be preferentially engaged by engaging the protrusions 14 with the grooves 15, and then the long rods 5 are inserted into the through-grooves 4 of the multiple sets of terminals. This allows for simultaneous installation of the multiple sets of terminals. The traditional method of sequentially installing the terminals on the components to be installed is not only cumbersome, but also, after installing a single set of terminals, the adjacent terminals, during installation, not only need to be engaged with the components to be installed, but also need to be connected to the installed terminals through the protrusions 14 and grooves 15. This overall operation is inconvenient, and assembling the multiple sets of terminals first and then performing simultaneous installation is more convenient and quicker.

[0059] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A snap-on parallel terminal, characterized in that: include, A housing (1), wherein two opposite ends of the housing (1) are respectively provided with connection ports; A mounting frame (2), the mounting frame (2) being arranged on both sides of the housing (1) where no connection ports are provided; An operating rod (3), the operating rod (3) is hinged to the mounting frame (2), and its two ends are divided into an operating end (31) and a clamping end (32) with the hinge point as the boundary; the clamping end (32) is used to clamp with the component to be installed to achieve installation or removal; When the operating lever (3) is in the first position, the clamping end (32) is clamped with the component to be installed to achieve installation; when the operating lever (3) is in the second position, the clamping end (32) is separated from the component to be installed to achieve disassembly.

2. The snap-on parallel terminal according to claim 1, wherein: The operating lever (3) can rotate around a hinge point between a first position and a second position; when the operating end (31) of the operating lever (3) is away from the housing (1) relative to the clamping end (32), the operating lever (3) is in the first position; when the operating end (31) of the operating lever (3) is close to the housing (1) relative to the clamping end (32), the operating lever (3) is in the second position.

3. The snap-on parallel terminal according to claim 2, wherein: The clamping end (32) is bent toward the housing (1) to form a buckle, which is a hook-shaped structure for cooperating with a groove of a component to be installed; the clamping end (32) is closer to the component to be installed than the operating end (31), and the operating end (31) is farther away from the component to be installed than the clamping end (32).

4. The snap-on parallel terminal according to claim 3, characterized in that: A support rod (21) is fixedly connected to one side of the mounting frame (2) close to the operating rod (3); a sleeve (33) is fixedly connected to the interior of the operating rod (3); and the sleeve (33) is sleeved on the outside of the support rod (21) to achieve a rotational connection between the operating rod (3) and the mounting frame (2).

5. The snap-on parallel terminal according to claim 4, characterized in that: The support rod (21) comprises an inner rod (211) fixedly connected to the outside of the mounting frame (2), an outer rod (212) fixedly connected to one end of the inner rod (211), and a notch (213) provided on the outer rod (212) and the outer side of the inner rod (211); the notch (213) is a long strip-shaped notch that passes through the outer rod (212) and is provided inside the inner rod (211); the edge profile of the outer rod (212) is larger than the edge profile of the inner rod (211).

6. The snap-on parallel terminal according to claim 3 or 4, characterized in that: A clamping slot (22) is provided at one end of the mounting frame (2) away from the component to be mounted, and a clamping rod (34) is fixedly connected to the outer side of the operating end (31) of the operating rod (3), and the clamping rod (34) is clamped with the clamping slot (22) to limit and fix the operating rod (3).

7. The snap-on parallel terminal according to claim 6, characterized in that: The clamping slot (22) is composed of a circular hole (221) and a guide surface (222); the guide surface (222) is an arc-shaped surface; the connection between the guide surface (222) and the circular hole (221) is higher than the bottom end of the circular hole (221); the guide surface (222) is used to guide the clamping rod (34) into the circular hole (221) to achieve the limiting fixation of the operating rod (3).

8. The snap-on parallel terminal according to claim 7, characterized in that: The connection ports at opposite ends of the housing (1) are respectively an external wire interface (11) and a metal spring-type conductor probe (12); the external wire interface (11) is used to connect to an external wire, and through holes (13) are provided through both ends of the housing (1) where the connection ports are provided; The metal spring-type conductor probe (12) comprises a spring and a conductive probe, and the conductive probe is connected to the housing (1) via the spring to achieve elastic contact; the metal spring-type conductor probe (12) is arranged at one end of the housing (1) close to the component to be installed.

9. The snap-on parallel terminal according to claim 7 or 8, characterized in that: A protrusion (14) is fixedly connected to the outer side of the housing (1), and a groove (15) is provided on a side of the housing (1) opposite to the protrusion (14); the protrusion (14) and the groove (15) are engaged in a cooperating manner and are used for assembling multiple groups of terminals.

10. The snap-on parallel terminal according to claim 9, characterized in that: The operating end (31) of the operating rod (3) is provided with a through slot (4), a long rod (5) is inserted into the through slot (4), and the long rod (5) and the through slot (4) are plugged in through clearance fit; The long rod (5) is used to plug into the through slot (4) of the operating end (31) of multiple sets of terminals to achieve connection of the multiple sets of terminals.

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