Electrode member, terminal mounting structure, and european double socket

Abstract

This utility model relates to an electrode component, whose electrode plate is provided with a wire-fixing terminal structure. The conductive frame of the wire-fixing terminal structure is a cover-shaped structure fastened to the electrode plate, including a base plate, a transverse side plate, an end side plate, and an opening. The end side plate is provided with a wire insertion port. The elastic clamp in the wire clamping cavity has a positioning base plate supported on the base plate. The positioning base plate has active wire clamping pieces and passive insertion wire clamping pieces bent at both ends. A positioning notch is provided in the middle of one side edge of the base plate corresponding to the opening. A positioning interval is provided on the elastic clamp corresponding to the position of the positioning notch. A breaking groove is provided on the positioning base plate. The positioning base plate forms two end pieces with a gap based on the breaking groove. The passive insertion wire clamping piece includes individual units connected one-to-one with the two end pieces, and a breaking gap is formed between the two individual units. The breaking groove and the breaking gap constitute the positioning gap. A terminal mounting structure with the above-mentioned electrode component and a European-style double socket are also disclosed. It has the advantages of firm and reliable installation.

Description

Technical Field

[0001] This utility model relates to a wall socket, specifically a European-style socket. Background Technology

[0002] Traditional European-style wall sockets use a wiring structure with bolts and nuts on the electrode plates to secure the wires, which is then tightened by turning the bolts and nuts. This method is inconvenient to operate.

[0003] To address the aforementioned technical issues, the applicant developed a quick-connect terminal structure suitable for European-style sockets. However, the design of the electrode component structure suffers from insufficient reliability in fixing the wire terminals. Specifically, the European-style socket is a single-prong type, with only one socket on the electrode plate of the power supply electrode. Therefore, the electrode plate has a small length span, which may meet reliability requirements. However, for double-prong sockets, the electrode plate has two sockets, resulting in a large length span. When a quick-connect structure is used on the electrode plate, the structure exhibits some instability. Therefore, the applicant seeks to design a terminal structure that can be reliably positioned and fixed, thus satisfying not only single-prong European-style sockets but also double-prong European-style sockets. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide an electrode component with a reasonable positioning structure design.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An electrode component includes an electrode plate with a coupling portion formed at its end. The electrode plate has a wire-fixing terminal structure, which includes a conductive frame. The conductive frame is a cover-shaped structure that is fastened to the electrode plate to form a wire-clamping cavity. It includes a base plate opposite to the electrode plate, transverse side plates located on a pair of sides of the base plate, an end side plate located at one end of the base plate, and an opening opposite the end side plate. The end side plate has a wire insertion port. An elastic clamp is provided in the wire-clamping cavity. The elastic clamp has a positioning base plate supported on the base plate. Both ends of the positioning base plate are bent to form an active wire-clamping piece and a passive wire-receiving clamping piece. The active clamping piece and the passive socketing clamping piece extend toward the electrode plate and cooperate with the electrode plate. The electrode plate is provided with a tool hole leading to the active clamping piece. The characteristic is that: a positioning notch is provided in the middle of one side edge of the corresponding opening of the base plate, a positioning interval corresponding to the position of the positioning notch is provided on the elastic clamp, a splitting groove is provided on the positioning base piece, and the positioning base piece forms two end pieces with a gap based on the splitting groove. The passive socketing clamping piece includes a single unit connected to the two end pieces in a one-to-one correspondence, and a separation gap is formed between the two single units. The positioning gap is composed of the splitting groove and the separation gap.

[0006] Preferably, one end of each of the two transverse side plates corresponding to the opening has a stepped notch, thereby forming a positioning plate end that extends out of the bottom plate on the stepped notch.

[0007] Preferably, the spring bow portion of the passively inserted wire clamping piece includes a first C-shaped curved portion connecting to the base plate, an intermediate straight piece connecting to the first C-shaped curved portion, and a second C-shaped curved portion connecting to the intermediate straight piece, wherein the second C-shaped curved portion extends to clamping foot pieces.

[0008] Preferably, the electrode plate is folded along the edge of the tool hole to form a wire limiting plate, and the end side plate is folded along the edge of the wire insertion port to form a wire baffle. The wire baffle is spliced ​​to the end of the wire limiting plate. The wire limiting plate and the transverse side plate, as well as the wire baffle and the transverse side plate, cooperate to form a wire guiding channel.

[0009] Another objective of this invention is to provide a terminal mounting structure that provides a secure and reliable positioning.

[0010] The system includes a middle base, a bottom shell covering the middle base, and electrode components. The bottom shell has a terminal cavity with a terminal positioning cavity. The terminal cavity has a wire insertion hole for communication between the terminal positioning cavity and the outside. The electrode components include an electrode plate with a coupling portion formed at its end. The electrode plate has a wire-fixing terminal structure, which includes a conductive frame installed in the terminal positioning cavity. The conductive frame is a cover-shaped structure that is snapped onto the electrode plate to form a wire clamping cavity. It includes a bottom plate opposite to the electrode plate, transverse side plates on a pair of sides of the bottom plate, an end side plate at one end of the bottom plate, and an opening opposite the end side plate. The end side plate has a wire insertion port that corresponds to the wire insertion hole. The wire clamping cavity has an elastic clamp with a positioning base plate supported on the bottom plate. The positioning base plate has active wire clamping plates and passive insertion plates bent at both ends. The clamping piece, active clamping piece, and passive socket clamping piece extend towards the electrode plate and cooperate with it. The electrode plate has a tool hole leading to the active clamping piece. A button corresponding to the tool hole is provided on the middle seat. The push end of the button can pass through the tool hole and cooperate with the active clamping piece. The characteristic is that: a positioning notch is provided in the middle of one side edge of the opening of the base plate; a positioning interval corresponding to the positioning notch is provided on the elastic clamp; a split groove is provided on the positioning base plate; the positioning base plate forms two end pieces with a gap based on the split groove; the passive socket clamping piece includes individual units connected one-to-one on the two end pieces; a separation gap is formed between the two individual units; the positioning gap is composed of the split groove and the separation gap; a positioning rib is formed in the terminal positioning cavity; the positioning rib is inserted into the positioning gap; and the electrode plate is supported on the end of the positioning rib.

[0011] Another objective of this invention is to provide a European-style double-gang socket with quick wiring function, which has the advantages of convenient wire disassembly and assembly and good structural stability.

[0012] A European-style double socket includes a panel with two adjacent socket recesses. The center base, fixed to the bottom of the panel, has several quick-release buttons. The bottom shell, which covers the middle seat, has a terminal cavity formed on it, which has a terminal positioning cavity. The terminal cavity is provided with a wire insertion hole to enable communication between the terminal positioning cavity and the outside. And several electrode components, which are constrained on the bottom shell by the middle seat, namely two grounding electrode components and two power supply electrode components. The electrode component includes an electrode plate with a coupling portion. The electrode plate has a quick-release wire-fixing terminal structure. The wire-fixing terminal structure includes a conductive frame installed within a terminal positioning cavity. The conductive frame is a cover-shaped structure that snaps onto the electrode plate to form a wire-clamping cavity. It includes a base plate opposite to the electrode plate, transverse side plates on a pair of sides of the base plate, an end side plate at one end of the base plate, and an opening opposite the end side plate. The end side plate has a wire insertion port that corresponds to a wire insertion hole. An elastic clip is provided in the wire-clamping cavity. The elastic clip has a positioning base plate supported on the base plate. One end of the positioning base plate is bent into an active wire-clamping piece that extends towards and corresponds to the electrode plate. The electrode plate has a tool hole leading to the active wire-clamping piece. A quick-release button on the center seat corresponds to the tool hole. The push end of the quick-release button can pass through the tool hole and correspond to the active wire-clamping piece. On the positioning base plate of the power supply electrode component, a passive socket clamping wire piece is also formed at one end opposite to the active wire piece. The passive socket clamping wire piece extends towards the electrode plate and cooperates with the electrode plate. The features are as follows: a positioning notch is provided in the middle of one side edge of the bottom plate corresponding to the opening of the power supply electrode component; a positioning interval corresponding to the position of the positioning notch is provided on the elastic clamp of the power supply electrode component; a split groove is provided on the positioning bottom plate of the power supply electrode component; the positioning bottom plate forms two end plates with a gap based on the split groove; the passively inserted clamping piece includes individual units connected one-to-one with the two end plates; a separation gap is formed between the two individual units; the positioning gap is constituted by the split groove and the separation gap; a positioning rib is formed in the terminal positioning cavity corresponding to the power supply electrode component; the positioning rib is inserted into the positioning gap; and the electrode plate of the power supply electrode component is supported on the end of the positioning rib.

[0013] By adopting the above technical solution, a positioning structure is added to the fixed terminal on the electrode component of the wall socket. Specifically, a positioning notch is set on the bottom plate of the conductive frame, and a positioning interval corresponding to the position of the positioning notch is provided on the elastic clip. In this way, the middle seat of the wall socket forms a corresponding positioning structure (positioning rib), realizing the positioning of the conductive frame and the elastic clip, and the electrode plate can be supported on the positioning rib, thereby making the fixed terminal reliably positioned and fixed.

[0014] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the terminal installation structure of the wall socket of this utility model; Figure 2 for Figure 1 Top view; Figure 3 for Figure 2 A sectional view taken along line AA. Figure 4 for Figure 2 A sectional view cut along line BB. Figure 5 Explosion view of the terminal mounting structure of the wall socket of this utility model Figure 1 ; Figure 6 Explosion view of the terminal mounting structure of the wall socket of this utility model Figure 2 ; Figure 7 This is a schematic diagram of the structure of the bottom shell of this utility model; Figure 8 This is a schematic diagram of the structure of the electrode component of this utility model. Figure 1 ; Figure 9 This is a schematic diagram of the structure of the electrode component of this utility model. Figure 2 ; Figure 10 This is a diagram showing the elastic clip of the electrode component of this utility model in the disengaged state. Figure 11 This is a structural schematic diagram of the European-style double socket of this utility model. Detailed Implementation

[0016] See appendix Figures 1-10This utility model discloses a terminal mounting structure for a wall socket, including a middle base 1, a bottom shell 2 covering the middle base 1, and an electrode component 3. The electrode component 3 is constrained on the bottom shell 2 by the middle base 1. A terminal cavity portion 21 with a terminal positioning cavity is formed on the bottom shell 2. The terminal cavity portion 21 is provided with a wire insertion hole 211 to enable communication between the terminal positioning cavity and the outside. The electrode component 3 includes an electrode plate 31 with a coupling portion 311 formed at its end. In the attached figure, the electrode component 3 is a power supply electrode component, so the coupling portion is a plug sleeve, and there is a plug sleeve at both ends of the electrode plate 31 to meet the use of European double-gang sockets. Of course, as a feasible solution of this utility model, the coupling portion can also be a grounding elastic foot, or a single plug sleeve design, which can be appropriately adjusted according to the specific application scenario of the electrode component. A wire fixing terminal structure is provided on the electrode plate 31. The wire fixing terminal structure includes a conductive frame 32, which is installed in the terminal positioning cavity. The conductive frame 32 is fastened to the electrode plate 31 to form a clamp. The conductive frame 32, which is a cover-like structure of the cavity 320, includes a base plate 321 opposite to the electrode plate 31, transverse side plates 322 located on a pair of sides of the base plate 321, an end side plate 323 located at one end of the base plate 321, and an opening 324 opposite to the end side plate 323. A connector structure is provided at the bottom of the transverse side plates 322 and the end side plate 323 to fix the conductive frame 32 to the electrode plate 31. The end side plate 323 has a wire insertion port 3231, which connects to a wire insertion hole. In accordance with the corresponding arrangement of 211, in order to guide the insertion of the wire, the end side plate 323 is folded over to form a wire baffle 3232 at the position of the wire insertion inlet 3231. The electrode plate 31 is folded over to form a wire limiting plate 312 that is sequentially spliced ​​with the wire baffle 3232. In this way, the wire limiting plate 312 and the wire baffle 3232 form a barrier on one side. The barrier and the transverse side plate 322 cooperate to form a guiding channel for the wire. In addition, a shallow groove 313 is formed on the electrode plate 31 to guide the wire.

[0017] An elastic clamp 33 is provided in the clamping cavity 320. The elastic clamp 33 has a positioning base plate 331, which is supported on the base plate 321. The two ends of the positioning base plate 331 are bent to form an active clamping piece 332 and a passive insertion clamping piece 333. The active clamping piece 332 and the passive insertion clamping piece 333 extend toward the electrode plate 31 and cooperate with the electrode plate 31. That is, the wire is clamped and fixed by the clamping end of the active clamping piece 332 and the electrode plate 31, and by the clamping end of the passive insertion clamping piece 333 and the electrode plate 31. The electrode plate 31 has a tool hole 314 leading to the active clamping piece 332. One edge of the tool hole 314 is folded to form a wire limiting plate 312. A button 11 corresponding to the position of the tool hole 314 is provided on the middle seat 1. The pushing end of the button 11 can pass through the tool hole 314 and cooperate with the active clamping piece 332. By pressing the button 11, The driving part of the push-up active wire clamp 332 drives the wire clamping end of the active wire clamp 332 and the electrode plate 31 to expand the gap. The bottom plate 321 has a positioning notch 3211 in the middle of one side edge corresponding to the opening 324. The elastic clamp 33 has a positioning interval corresponding to the position of the positioning notch 3211. The positioning bottom plate 331 has a breaking groove 3311. The positioning bottom plate 331 forms two end pieces 3312 with a gap based on the breaking groove 3311. The passively inserted wire clamping piece 333 includes a single unit 333-1 connected to the two end pieces 3312 one by one. A separation interval 333-2 is formed between the two single units 333-1. The positioning interval is composed of the breaking groove 3311 and the separation interval 333-2. A positioning rib 212 is formed in the terminal positioning cavity. The positioning rib 212 is inserted into the positioning interval, and the electrode plate 31 is supported on the end of the positioning rib 212. The conductive frame 32 of the fixed terminal structure is positioned and engaged by the positioning notch 3211 and the positioning rib 212. The elastic clip 33 is positioned by the positioning interval and the positioning rib 212. After the positioning rib passes through the positioning notch and the positioning interval, the electrode plate is supported at the end of the positioning rib. With the cooperation of the middle seat, the fixed terminal structure is reliably positioned and fixed.

[0018] In this specific embodiment, the two transverse side plates 322 have stepped recesses 3221 at one end corresponding to the opening 324, thereby forming a positioning plate end 3222 extending out of the base plate 321 on the stepped recesses 3221. The terminal cavity 21 is formed with a stepped portion 213 extending into the stepped recesses 3221. A positioning socket 2131 is provided at the corner of the stepped portion 213. The stepped portion 213 is placed into the stepped recesses 3221 and cooperates with the elastic clip 33 for stopping. The positioning plate end 3222 is inserted into the positioning socket 2131. This achieves the stopping and restriction of the elastic clip, reduces the risk of displacement of the elastic clip when pushing and inserting wires, and further realizes the positioning and fixation of the conductive frame.

[0019] In another embodiment of this utility model, the spring bow portion of the passive socket clamping piece 333 includes a first C-shaped curved portion 3331 connecting to the base plate 321, an intermediate straight piece 3332 connecting to the first C-shaped curved portion 3331, and a second C-shaped curved portion 3333 connecting to the intermediate straight piece 3332. The second C-shaped curved portion 3333 extends to form a clamping foot piece 3334. The passive socket clamping piece has a more reliable elastic deformation capability. Simultaneously, the spring bow portion is designed with multiple bends, extending its size. Since the spring bow portion runs along the break groove, the positioning of the elastic clamp and the positioning rib is more reliable.

[0020] The terminal mounting structure of the wall socket disclosed in this utility model can be applied to European-style double sockets (such as...). Figure 4 As shown in the figure. The European-style double socket includes a panel 4, a middle base 1, a bottom shell 2, and several electrode components 3. The panel 4 has two adjacent socket grooves 41 recessed on it. The middle base 1 is fixed to the bottom of the panel 4 and has several quick-release buttons 11 formed on it. The bottom shell 2 covers the middle base 1 and has a terminal cavity 21 with a terminal positioning cavity 210 formed on it. The terminal cavity 21 has a wire hole for communication between the terminal positioning cavity 210 and the outside. The electrode components 3 are restricted to the bottom shell 2 by the middle base 1. The electrode components 3 on this socket are two grounding electrode components and two power supply electrode components. The wire-fixed terminal structure on the grounding electrode component is also a quick-connect structure design, which can adopt the structure design of the traditional European-style socket, so its structure will not be described in detail. The power supply electrode component installation structure adopts the terminal installation structure of the above embodiment to achieve a firm and reliable positioning and installation of the power supply electrode components. See Appendix. Figures 1-10 Therefore, the installation structure of the power supply terminal electrode components has been described in detail, so its structure will not be repeated here.

Claims

1. An electrode component, comprising an electrode plate with a coupling portion formed at its end, a wire-fixing terminal structure provided on the electrode plate, the wire-fixing terminal structure including a conductive frame, the conductive frame being a cover-shaped structure fastened to the electrode plate to form a wire-clamping cavity, including a base plate opposite to the electrode plate, transverse side plates located on a pair of sides of the base plate, an end side plate located at one end of the base plate, and an opening opposite to the end side plate, the end side plate having a wire insertion port, an elastic clamp provided in the wire-clamping cavity, the elastic clamp having a positioning base plate, the positioning base plate being supported on the base plate, the positioning base plate having active wire-clamping plates and passive wire-receiving clamping plates bent at both ends, the active wire-clamping plates and the passive wire-receiving clamping plates extending towards the electrode plate and correspondingly cooperating with the electrode plate, the electrode plate having a tool hole leading to the active wire-clamping plate, characterized in that: The base plate has a positioning notch at the center of one side edge corresponding to the opening. The elastic clamp has a positioning interval corresponding to the position of the positioning notch. The positioning base plate has a split groove. The positioning base plate forms two end pieces with a gap based on the split groove. The passive insertion clamping piece includes a single unit connected to the two end pieces in a one-to-one correspondence. A separation gap is formed between the two single units. The positioning gap is composed of the split groove and the separation gap.

2. The electrode component according to claim 1, characterized in that: The two transverse side plates have stepped notches at one end corresponding to the opening, thereby forming a positioning plate end that extends out of the bottom plate on the stepped notches.

3. The electrode component according to claim 1, characterized in that: The passively inserted wire clamping piece has a spring bow portion including a first C-shaped curved portion connecting to the base plate, an intermediate straight piece connecting to the first C-shaped curved portion, and a second C-shaped curved portion connecting to the intermediate straight piece. The second C-shaped curved portion extends to have a wire clamping foot piece.

4. The electrode component according to claim 1, characterized in that: The electrode plate is folded along the edge of the tool hole to form a wire limiting plate, and the end side plate is folded along the edge of the wire insertion port to form a wire baffle. The wire baffle is spliced ​​to the end of the wire limiting plate. The wire limiting plate and the transverse side plate, as well as the wire baffle and the transverse side plate, cooperate to form a wire guiding channel.

5. A terminal mounting structure for a wall socket, comprising a central base, a bottom shell covering the central base, and an electrode component. The bottom shell has a terminal cavity portion with a terminal positioning cavity formed thereon. The terminal cavity portion has a wire insertion hole for communication between the terminal positioning cavity and the outside. The electrode component includes an electrode plate with a coupling portion formed at its end. A wire-fixing terminal structure is provided on the electrode plate. The wire-fixing terminal structure includes a conductive frame. The conductive frame is installed in the terminal positioning cavity. The conductive frame is a cover-shaped structure that is snapped onto the electrode plate to form a wire clamping cavity. It includes a base plate opposite to the electrode plate, transverse side plates located on a pair of sides of the base plate, and a [missing information - likely a component name] located at one end of the base plate. The end side plate and the opening opposite to the end side plate are provided. The end side plate is provided with a wire insertion port, which corresponds to the wire insertion hole. An elastic clamp is provided in the wire clamping cavity. The elastic clamp has a positioning base plate, which is supported on the base plate. The two ends of the positioning base plate are bent into active wire clamping plates and passive wire receiving clamping plates. The active wire clamping plates and passive wire receiving clamping plates extend towards the electrode plate and correspond to the electrode plate. The electrode plate is provided with a tool hole leading to the active wire clamping plate. A button corresponding to the position of the tool hole is provided on the middle seat. The push end of the button can pass through the tool hole and correspond to the active wire clamping plate. The feature is: The base plate has a positioning notch at the center of one side edge corresponding to the opening. The elastic clamp has a positioning interval corresponding to the position of the positioning notch. The positioning base plate has a split groove. The positioning base plate forms two end pieces with a gap based on the split groove. The passive insertion clamping piece includes individual units that are connected one-to-one with the two end pieces. A separation gap is formed between the two individual units. The positioning gap is composed of the split groove and the separation gap. A positioning rib is formed in the terminal positioning cavity. The positioning rib is inserted into the positioning gap, and the electrode plate is supported at the end of the positioning rib.

6. The terminal mounting structure of the wall socket according to claim 5, characterized in that: The two transverse side plates have stepped recesses at one end corresponding to the opening, thereby forming a positioning plate end that extends out of the bottom plate on the stepped recesses. A stepped portion extending into the stepped recess is formed on the terminal cavity. A positioning socket is provided at the corner of the stepped portion. The stepped portion is placed into the stepped recess and cooperates with the elastic clamp stop. The positioning plate end is inserted into the positioning socket.

7. The terminal mounting structure of the wall socket according to claim 5, characterized in that: The passively inserted wire clamping piece has a spring bow portion including a first C-shaped curved portion connecting to the base plate, an intermediate straight piece connecting to the first C-shaped curved portion, and a second C-shaped curved portion connecting to the intermediate straight piece. The second C-shaped curved portion extends to have a wire clamping foot piece.

8. A European-style double socket, comprising a panel with two adjacent socket recesses; The middle base is fixed to the bottom of the panel, and the middle base has several quick-release buttons. The bottom shell covers the middle seat. A terminal cavity with a terminal positioning cavity is formed on the bottom shell. The terminal cavity is provided with a wire insertion hole to enable communication between the terminal positioning cavity and the outside. And several electrode components, which are constrained on the bottom shell by the middle seat, namely two grounding electrode components and two power supply electrode components. The electrode component includes an electrode plate with a coupling portion. The electrode plate has a quick-release wire-fixing terminal structure. The wire-fixing terminal structure includes a conductive frame installed within a terminal positioning cavity. The conductive frame is a cover-shaped structure that snaps onto the electrode plate to form a wire-clamping cavity. It includes a base plate opposite to the electrode plate, transverse side plates on a pair of sides of the base plate, an end side plate at one end of the base plate, and an opening opposite the end side plate. The end side plate has a wire insertion port that corresponds to a wire insertion hole. An elastic clip is provided in the wire-clamping cavity. The elastic clip has a positioning base plate supported on the base plate. One end of the positioning base plate is bent into an active wire-clamping piece that extends towards and corresponds to the electrode plate. The electrode plate has a tool hole leading to the active wire-clamping piece. A quick-release button on the center seat corresponds to the tool hole. The push end of the quick-release button can pass through the tool hole and correspond to the active wire-clamping piece. A passive socket clamping wire piece is also formed at one end of the positioning base plate of the power supply terminal electrode component opposite to the active wire piece. The passive socket clamping wire piece extends towards the electrode plate and corresponds to and cooperates with the electrode plate. The characteristic feature is that: The bottom plate of the power supply electrode component has a positioning notch at the center of one side edge corresponding to the opening. The elastic clamp of the power supply electrode component has a positioning interval corresponding to the position of the positioning notch. The positioning base plate of the power supply electrode component has a breaking groove. The positioning base plate forms two end plates with a gap based on the breaking groove. The passively inserted clamping piece includes a single unit connected to the two end plates in a one-to-one correspondence. A separation gap is formed between the two single units. The positioning gap is composed of the breaking groove and the separation gap. A positioning rib is formed in the terminal positioning cavity corresponding to the power supply electrode component. The positioning rib is inserted into the positioning gap, and the electrode plate of the power supply electrode component is supported on the end of the positioning rib.

9. The European-style double socket according to claim 8, characterized in that: The two transverse side plates on the power supply electrode component have stepped recesses at one end corresponding to the opening, thereby forming a positioning plate end that extends out of the base plate on the stepped recesses. The terminal cavity portion that corresponds to and cooperates with the power supply electrode component is provided with a positioning socket, and the positioning plate end is inserted into the positioning socket.

10. The European-style double socket according to claim 8, characterized in that: The passively inserted wire clamping piece has a spring bow portion including a first C-shaped curved portion connecting to the base plate, an intermediate straight piece connecting to the first C-shaped curved portion, and a second C-shaped curved portion connecting to the intermediate straight piece. The second C-shaped curved portion extends to have a wire clamping foot piece.

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