High integration low voltage complete switch cabinet with convenient wiring

Abstract

This invention belongs to the field of wiring technology, specifically disclosing a highly integrated low-voltage switchgear for convenient wiring. It includes multiple interconnected cabinets and a wiring structure. The wiring structure includes a housing fixed to the cabinet, with wires running through its interior. A connecting bucket is fixed to the wire at the inlet end of the housing, and a contact ball is fixed to the outlet end. A wire management assembly is distributed inside the housing, comprising a drive rod and rollers fixed at equal intervals on the drive rod. The rollers abut against the wires. One end of the drive rod is connected to a rotating base, which is rotatably connected to the output end of the rotating base. The rotating base is fixed to the side wall of the housing. A support member is sleeved on the other end of the drive rod away from the rotating base and fixed to the housing. The contact balls in this switchgear expand when heated, allowing the two expanding contact balls to clamp the wires. The rollers also cooperate with the contact balls to support the wires, achieving a stable connection of the wires to the intelligent control module.

Description

Technical Field

[0001] This invention belongs to the field of wiring technology, and specifically discloses a highly integrated low-voltage complete power switch cabinet that facilitates wiring. Background Technology

[0002] Low-voltage switchgear typically includes incoming line cabinets, outgoing line cabinets, busbar tie cabinets, and capacitor compensation cabinets. Each cabinet is equipped with a highly integrated set of intelligent control modules. They are no longer simple mechanical switch combinations, but have evolved into intelligent power distribution management units that integrate measurement, control, protection, and communication. To ensure the stable operation of the intelligent control modules inside these cabinets, cables are connected between adjacent cabinets. The cabinet of a low-voltage switchgear is equipped with a wiring structure. Currently, the wiring structure applicable to power switchgear on the market is usually composed of cable brackets and conductor structures. In actual use, the conductor structure drives the cable to be fixed on the cable bracket, which can realize the cable bracket supporting the cable on the power switchgear. The wiring structure of the aforementioned power switchgear does indeed provide a good fixation effect for the cables in actual use. However, the cable brackets do not have a good cable fixing structure. The cables connected to the power switchgear are usually in rigid contact with the cable brackets. When the intelligent control module inside the power switchgear is being repaired, the staff needs to pull the cables frequently, which can easily lead to wear on the outer wall of the cables. To prevent cable wear and tear on the power switchgear, flexible pads are fixed to the cable brackets and cable connection points. While these flexible pads do prevent the cables from rubbing against the cable brackets, they are susceptible to thermal expansion and contraction, which can lead to an unstable connection between the cables and the cable brackets on the power switchgear. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a highly integrated low-voltage switchgear that facilitates wiring, so as to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention provides a highly integrated low-voltage switchgear for convenient wiring, comprising multiple interconnected cabinets and wiring structures. The wiring structure includes a housing fixed to the cabinet, with wires running through the interior of the housing. A connecting bucket is fixed to the wire at the inlet end of the housing, and a sliding ball is fixed to the outlet end of the housing. Cable management groups are distributed inside the housing. The cable management assembly includes a transmission rod and rollers fixed at equal intervals on the transmission rod. The rollers abut against the cable. One end of the transmission rod is connected to a rotating base. The transmission rod is rotatably connected to the output end of the rotating base. The rotating base is fixed to the side wall of the housing. The other end of the transmission rod away from the rotating base is sleeved with a support member. The support member is fixed to the housing.

[0005] In the above technical solution, the housing further includes a heat dissipation mesh plate, which is distributed on the side of the housing away from the connecting bucket. The abutting sliders are distributed in the holes through which the wires pass through the heat dissipation mesh plate. There are two abutting sliders, and both abutting sliders abut against the wires.

[0006] In the above technical solution, further, a heat dissipation mesh is fixed on the shell, the heat dissipation mesh is distributed above the connecting bucket, and the heat dissipation mesh and heat dissipation mesh plate are connected to the inner cavity of the shell.

[0007] In the above technical solution, the support component further includes a sleeve, a rectangular rod is inserted into the sleeve, the rectangular rod is fixed to the end of the transmission rod away from the rotating seat, a mounting shell is rotatably sleeved on the sleeve, a bottom cover is fixed on the mounting shell, and the bottom cover is fixed to the inner wall of the shell.

[0008] In the above technical solution, a rotating column is further fixed at one end of the sleeve inserted into the mounting shell. The rotating column rotates on the bottom cover, and a coil spring is fixed between the rotating column and the inner wall of the mounting shell.

[0009] In the above technical solution, the outer wall of the sleeve is further provided with an abutment rod fixed inside the mounting shell, and the inner wall of the mounting shell is provided with two limiting blocks. The included angle between the two limiting blocks is a flat angle, and the abutment rod abuts against the limiting blocks.

[0010] In the above technical solution, a rectangular groove is further provided at one end where the sleeve and the rectangular rod are connected. The sleeve is connected to the rectangular rod through the rectangular groove, and the cross-section of the rectangular groove is larger than the cross-section of the rectangular rod.

[0011] In the above technical solution, the roller further includes abutting posts and circular pieces fixed at both ends of the abutting posts. The abutting posts are fixed at equal intervals on the transmission rod, and the abutting posts and circular pieces are integrally fixed with the transmission rod.

[0012] In the above technical solution, the surface of the abutting post is engraved with a rough texture, the abutting post and the wire abut together, and the wire is distributed between two circular pieces on the abutting post.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The contact ball and connecting cup in this switch cabinet can be made of thermally expanding silicone material. When the wire passes through the inside of the housing, the contact ball and connecting cup can be pulled by the wire. Subsequently, the contact ball and connecting cup undergo slight deformation. When the operator pulls the wire to connect to the intelligent control module, the contact ball and connecting cup provide resistance to the wire. This ensures that the wire between the contact ball and connecting cup is always in a taut state, which can avoid a large number of wires being distributed inside the housing, thereby facilitating heat dissipation of the wires inside the housing.

[0014] 2. The wires in the switch cabinet have a contact ball at one end that passes through the heat dissipation mesh. When the heat inside the cabinet passes through the heat dissipation mesh and enters the interior of the housing, the contact ball will expand due to the heat. This allows the two contact balls to clamp the wires tightly. At the same time, the rollers inside the housing can also cooperate with the contact ball to support the wires, thereby achieving a stable connection of the wires to the intelligent control module.

[0015] 3. The coil spring in this switchgear can drive the sleeve on the rotating column to rotate in the opposite direction under its own restoring force. At the same time, the transmission rod drives the abutment column to rotate in the opposite direction, thereby keeping the wires at the connection end of the wire and the intelligent control module in a taut state. Meanwhile, the abutment column will drive the lower part of the wire to push the connecting bucket, thereby making the wire no longer provide tension to the connecting bucket. The connecting bucket can pull the wire under its own restoring force, thus keeping the section of the wire passing through the shell in a taut state, avoiding excessive wire distribution inside the shell, and facilitating the maintenance of the intelligent control module by the staff. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the implementation state of the present invention; Figure 2 This is a schematic diagram illustrating the implementation of the wire penetrating the housing in this invention; Figure 3 This is a schematic diagram of the connection between the wire and the roller in this invention; Figure 4 This is a diagram showing the connection structure between the rotary seat and the transmission rod in this invention; Figure 5 This is a schematic diagram showing the disassembled rectangular rod and sleeve in this invention; Figure 6 This is a schematic diagram showing the distribution of the abutment rod and the limiting block in this invention; Figure 7 for Figure 2 Enlarged view of A in the middle; Figure 8 This is a schematic diagram of the roller structure in this invention.

[0017] 1. Cabinet body; 2. Heat dissipation mesh plate; 21. Connecting compartment; 22. Heat dissipation mesh; 23. Shell; 24. Abutting ball; 3. Wire; 4. Roller; 41. Transmission rod; 42. Mounting shell; 43. Rotary seat; 44. Abutting post; 45. Rectangular rod; 46. Sleeve; 47. Bottom cover; 48. Rotating post; 49. Limiting block; 410. Coil spring; 411. Abutting rod; 412. Circular plate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] Example 1: Please refer to Figures 1-8 As shown, the present invention provides a technical solution: This invention is a highly integrated low-voltage complete power switch cabinet with convenient wiring, including multiple interconnected cabinets 1 and wiring structure. The wiring structure includes a housing 23 fixed on the cabinet 1, a conductor 3 passing through the inside of the housing 23, a connecting bucket 21 fixed on the conductor 3 at the inlet end of the housing 23, a sliding ball 24 fixed at the outlet end of the housing 23, and a cable management group distributed inside the housing 23. Low-voltage switchgear typically includes incoming line cabinets, outgoing line cabinets, busbar tie cabinets, and capacitor compensation cabinets. Each switchgear is highly integrated with a feature-rich intelligent control module. To facilitate understanding of the technical solution shown in this invention, these switchgears are collectively referred to as cabinet 1. A wire 3 is connected between two adjacent cabinets 1. Since the low-voltage complete power switchgear includes multiple cabinets 1, each cabinet 1 is highly integrated with a feature-rich intelligent control module. In order for these intelligent control modules to work properly, multiple sets of wires 3 are connected between two adjacent cabinets 1. In order to prevent the wires 3 from being damaged during use, a wire management group is set on the cabinet 1. The cable management assembly includes a transmission rod 41 and rollers 4 fixed at equal intervals on the transmission rod 41. The rollers 4 abut against the wires 3. One end of the transmission rod 41 is connected to a rotating seat 43, which consists of a rotating tube and a seat body. The rotating tube can rotate on the seat body, and the seat body is fixed to the inner wall of the housing 23. The rotating tube is sleeved and fixed on the transmission rod 41. The transmission rod 41 is rotatably connected to the output end of the rotating seat 43. The rotating seat 43 is fixed to the side wall of the housing 23. The other end of the transmission rod 41 away from the rotating seat 43 is sleeved with a support member, which is fixed to the housing 23.

[0021] The housing 23 includes a heat dissipation mesh plate 2, which is distributed on the side of the housing 23 away from the connecting bucket 21. The abutting sliders 24 are distributed in the holes through which the wires 3 pass through the heat dissipation mesh plate 2. There are two abutting sliders 24, and both abutting sliders 24 abut against the wires 3.

[0022] Heat dissipation mesh 22 is fixed on the shell 23. The heat dissipation mesh 22 is distributed above the connecting bucket 21. Since hot air has the characteristic of rising, distributing the heat dissipation mesh 22 above the connecting bucket 21 can prevent more heat from the hot air from being transferred to the connecting bucket 21, thus preventing the connecting bucket 21 from being overheated and expanding. The connecting bucket 21 has a conical bucket-shaped structure. The wire 3 passes through the connecting bucket 21, which can prevent the wire 3 from easily detaching from the connecting bucket 21. The heat dissipation mesh 22 and the heat dissipation mesh plate 2 are connected to the inner cavity of the shell 23.

[0023] The support includes a sleeve 46, a rectangular rod 45 is inserted into the sleeve 46, the rectangular rod 45 is fixed to the end of the transmission rod 41 away from the rotating seat 43, a mounting shell 42 is rotatably sleeved on the sleeve 46, a bottom cover 47 is fixed on the mounting shell 42, and the bottom cover 47 is fixed to the inner wall of the shell 23. In actual use, the staff pre-groups the wires 3. The wire management group shown in this manual can support a group of wires 3 at the same time. The staff can add an appropriate number of wire management groups inside the housing 23 according to the actual situation. In order to make it easier to understand how the rollers 4 support the wires 3, each transmission rod 41 is shown with four rollers 4 in the attached drawings of this manual. The staff can add an appropriate number of rollers 4 on the transmission rod 41 according to the number of wires 3 in each group. When the staff fixes the turntable 43 and the bottom cover 47 inside the housing 23, the transmission rod 41 drives the rollers 4 to be distributed in the housing 23. Then the wire 3 passing through the housing 23 abuts against the rollers 4, thereby enabling the rollers 4 to organize the wire 3 passing through the housing 23, and also making it easier for the staff to inspect the wire 3. In actual use, the abutting ball 24 and the connecting bucket 21 can be made of silicone material that expands with heat. When the wire 3 passes through the inside of the housing 23, the abutting ball 24 and the connecting bucket 21 can be pulled by the wire 3. Subsequently, the abutting ball 24 and the connecting bucket 21 undergo slight deformation. The advantage of this design is that when the operator pulls the wire 3 to connect with the intelligent control module, the abutting ball 24 and the connecting bucket 21 provide resistance to the wire 3. This ensures that the wire 3 between the abutting ball 24 and the connecting bucket 21 is always in a taut state. The advantage of this design is that it avoids a large number of wires 3 being distributed inside the housing 23, thereby facilitating heat dissipation of the wires 3 inside the housing 23. When the wire 3 is connected to the intelligent control module, the abutting ball 24 and the connecting bucket 21 can pull the connection end of the wire 3 and the intelligent control module under the action of their own restoring force, thereby realizing that the connection end of the wire 3 and the intelligent control module is in a taut state. This can prevent the wire 3 from being randomly distributed inside the cabinet 1, making it easier for subsequent staff to inspect the wire 3. At the same time, it can prevent the heat generated by the wire 3 from being distributed too much inside the cabinet 1. It should be noted that the existing power switchgear is equipped with an air-cooling structure. Its main principle is to use fan blades to drive the low-temperature air from outside through the switchgear, so as to quickly dissipate the heat inside the switchgear. In order to keep the contact ball 24 clamping the conductor 3, a heat dissipation mesh plate 2 is installed on the shell 23. When the wire 3 passes through the housing 23 and connects to the intelligent control module, the air-cooling structure drives the heat inside the cabinet 1 to pass through the heat dissipation mesh 2 and enter the interior of the housing 23. At this time, the interior of the housing 23 will heat up. In order to dissipate the high temperature inside the housing 23 quickly, the housing 23 is provided with heat dissipation mesh 22. When the intelligent control modules on multiple cabinets 1 are connected through the wire 3, a gap can be set between two adjacent cabinets 1. The advantage of this design is that the high temperature air inside the housing 23 can pass through the heat dissipation mesh 22 and be discharged into the air between the two cabinets 1. Since the end of the wire 3 that passes through the heat dissipation mesh plate 2 is abutted by the abutting ball 24, when the heat inside the cabinet 1 passes through the heat dissipation mesh plate 2 and enters the interior of the shell 23, the abutting ball 24 will expand due to heat. This increases the strength of the abutting ball 24 in clamping the wire 3, so that the abutting ball 24 is always clamped on the wire 3. At the same time, the roller 4 inside the shell 23 can also cooperate with the abutting ball 24 to support the wire 3, thereby realizing the wire 3 is stably connected to the intelligent control module.

[0024] Example 2: Please refer to Figures 1-8 As shown, based on Embodiment 1, this invention provides a technical solution. Unlike Embodiment 1, in this embodiment, when the worker is inspecting the intelligent control module, the worker can pull the wire 3. At this time, the wire 3 will drive the connecting bucket 21 to deform, the rotating column 48 will drive the coil spring 410 to work. When the worker stops pulling the wire 3, the coil spring 410 can drive the sleeve 46 on the rotating column 48 to rotate in the opposite direction under its own restoring force. At the same time, the transmission rod 41 drives the abutment column 44 to rotate in the opposite direction, thereby making the part of the connection between the wire 3 and the intelligent control module taut. At the same time, the abutment column 44 will drive the lower part of the wire 3 to push the connecting bucket 21, thereby making the wire 3 no longer provide tension to the connecting bucket 21. The connecting bucket 21 can pull the wire 3 under its own restoring force, thereby making the section of the wire 3 passing through the shell 23 taut, avoiding too many wires 3 distributed inside the shell 23.

[0025] A rotating post 48 is fixed at one end of the sleeve 46 inserted into the mounting shell 42. The rotating post 48 rotates on the bottom cover 47. A coil spring 410 is fixed between the rotating post 48 and the inner wall of the mounting shell 42.

[0026] The outer wall of the sleeve 46 is fixed with an abutment rod 411 inside the mounting shell 42. The inner wall of the mounting shell 42 is fixed with two limiting blocks 49. The included angle between the two limiting blocks 49 is a flat angle. The abutment rod 411 and the limiting blocks 49 abut against each other. To prevent fatigue damage to the coil spring 410 when the rotating column 48 drives it to rotate, an abutment rod 411 is provided on the sleeve 46 and a limit block 49 is provided on the mounting shell 42. The abutment rod 411 can abut against the limit block 49, which allows the sleeve 46 to rotate only within 180 degrees, thereby limiting the fatigue of the coil spring 410 when the rotating column 48 rotates too much.

[0027] A rectangular groove is provided at one end where the sleeve 46 and the rectangular rod 45 are sleeved. The sleeve 46 is sleeved on the rectangular rod 45 through the rectangular groove, and the cross-section of the rectangular groove is larger than the cross-section of the rectangular rod 45.

[0028] The roller 4 includes abutment posts 44 and circular pieces 412 fixed at both ends of abutment posts 44. Abutment posts 44 are fixed at equal intervals on transmission rod 41. Abutment posts 44 and circular pieces 412 are integrally fixed with transmission rod 41.

[0029] The surface of the abutment post 44 is engraved with a rough texture. The abutment post 44 and the wire 3 abut against each other. The rough texture can achieve a suitable friction between the abutment post 44 and the wire 3, thereby enabling the wire 3 to drive the abutment post 44 to rotate. The wire 3 is distributed between the two circular pieces 412 on the abutment post 44. The surface of the abutment post 44 is engraved with a rough texture, which can create friction between the outer wall of the conductor 3 and the abutment post 44. When the worker pulls the conductor 3, the conductor 3 will drive the abutment post 44 to rotate, which prevents the conductor 3 from sliding and rubbing on the abutment post 44. Compared with the existing line support structure, the friction between the abutment post 44 and the outer wall of the conductor 3 is smaller. Since the contact ball 24 and the connecting bucket 21 are made of silicone material that expands with heat, in order to facilitate understanding of the working state of the contact ball 24 and the connecting bucket 21, it is assumed that the thermal expansion index of the contact ball 24 and the connecting bucket 21 is 40 degrees Celsius. When the temperature of the environment where the contact ball 24 and the connecting bucket 21 are located is lower than 40 degrees Celsius, it means that the working environment inside the cabinet 1 is good, or that the staff is inspecting the intelligent control module inside the cabinet 1. The contact ball 24 and the connecting bucket 21 slightly press against the wire 3. The advantage of this design is that it makes it easy for the staff to pull the wire 3. When the temperature of the environment where the contact ball 24 and the connecting bucket 21 are located is higher than 40 degrees Celsius, it means that the intelligent control module inside the cabinet 1 is in a high-load operation state. At this time, the contact ball 24 and the connecting bucket 21 will expand due to heat, and the clamping force of the contact ball 24 and the connecting bucket 21 on the wire 3 will increase, thereby preventing the vibration generated by the operation of the intelligent control module from causing the electrical terminal of the wire 3 to shake. When the wire 3 passes through the connecting bucket 21, the wire 3 will rub against the storage end of the connecting bucket 21. Since the abutting ball 24 will come into contact with the heat emitted by the cabinet 1, the abutting ball 24 may experience a decrease in its self-restoring force after long-term use. In order to keep the connection end of the wire 3 and the intelligent control module taut, a coil spring 410 is connected between the rotating column 48 and the mounting shell 42. When the staff inspects the intelligent control module inside the cabinet 1, the staff removes the damaged intelligent control module from the wire 3. Then the staff pulls the wire 3, which causes the connecting bucket 21 to deform. Since the wire 3 abuts against the abutting post 44, the wire 3 drives the transmission rod 41 to rotate through the abutting post 44. The transmission rod 41 drives the rotating post 48 on the sleeve 46 to rotate through the rectangular rod 45, thereby realizing the energy storage of the coil spring 410. When the operator does not pull on the wire 3, the coil spring 410 can drive the sleeve 46 on the rotating column 48 to rotate in the opposite direction under its own restoring force. At the same time, the transmission rod 41 drives the abutment column 44 to rotate in the opposite direction, thereby keeping the part of the wire 3 and the intelligent control module connection end in a taut state. Meanwhile, the abutment column 44 will drive the lower part of the wire 3 to push against the connecting bucket 21, thereby making the wire 3 no longer provide tension to the connecting bucket 21. The connecting bucket 21 can pull on the wire 3 under its own restoring force, thereby keeping the section of the wire 3 that passes through the housing 23 in a taut state, avoiding excessive distribution of the wire 3 inside the housing 23.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A highly integrated low-voltage switchgear for convenient wiring, comprising a cabinet (1) and a wiring structure, characterized in that: The wiring structure includes a housing (23) fixed on the cabinet (1), a wire (3) passing through the inside of the housing (23), a connecting bucket (21) fixed on the wire (3) at the wire inlet end of the housing (23), a sliding ball (24) fixed at the wire outlet end of the housing (23), and a cable management group distributed inside the housing (23). The cable management assembly includes a transmission rod (41) and rollers (4) fixed at equal intervals on the transmission rod (41). The rollers (4) abut against the wires (3). One end of the transmission rod (41) is connected to a rotating seat (43). The transmission rod (41) is rotatably connected to the output end of the rotating seat (43). The rotating seat (43) is fixed to the side wall of the housing (23). The other end of the transmission rod (41) away from the rotating seat (43) is fitted with a support member. The support member is fixed to the housing (23).

2. The highly integrated low-voltage switchgear for convenient wiring as described in claim 1, characterized in that, The housing (23) includes a heat dissipation mesh plate (2), which is distributed on the side of the housing (23) away from the connecting bucket (21). The abutting ball (24) is distributed in the hole through which the wire (3) passes through the heat dissipation mesh plate (2). There are two abutting balls (24), and both abutting balls (24) abut against the wire (3).

3. The highly integrated low-voltage switchgear for convenient wiring as described in claim 1, characterized in that, The housing (23) is fixed with heat dissipation mesh (22), which is distributed above the connecting bucket (21). The heat dissipation mesh (22) and the heat dissipation mesh plate (2) are connected to the inner cavity of the housing (23).

4. The highly integrated low-voltage switchgear for convenient wiring as described in claim 1, characterized in that, The support includes a sleeve (46), on which a rectangular rod (45) is inserted. The rectangular rod (45) is fixed to one end of the transmission rod (41) away from the rotating seat (43). A mounting shell (42) is rotatably sleeved on the sleeve (46). A bottom cover (47) is fixed on the mounting shell (42). The bottom cover (47) is fixed to the inner wall of the shell (23).

5. A highly integrated low-voltage switchgear for convenient wiring as described in claim 4, characterized in that, The end of the sleeve (46) inserted into the mounting shell (42) is fixed with a rotating column (48), which rotates on the bottom cover (47). A coil spring (410) is fixed between the rotating column (48) and the inner wall of the mounting shell (42).

6. A highly integrated low-voltage switchgear for convenient wiring as described in claim 4, characterized in that, The outer wall of the sleeve (46) is fixed with an abutment rod (411) inside the mounting shell (42). The inner wall of the mounting shell (42) is fixed with two limiting blocks (49). The included angle between the two limiting blocks (49) is a flat angle. The abutment rod (411) and the limiting blocks (49) abut against each other.

7. A highly integrated low-voltage switchgear for convenient wiring as described in claim 4, characterized in that, A rectangular groove is provided at one end of the sleeve (46) and the rectangular rod (45) that are connected. The sleeve (46) is connected to the rectangular rod (45) through the rectangular groove. The cross-section of the rectangular groove is larger than the cross-section of the rectangular rod (45).

8. A highly integrated low-voltage switchgear for convenient wiring as described in claim 1, characterized in that, The roller (4) includes abutment post (44) and circular pieces (412) fixed at both ends of abutment post (44). The abutment post (44) is fixed at equal intervals on transmission rod (41). The abutment post (44) and circular pieces (412) are integrally fixed with transmission rod (41).

9. A highly integrated low-voltage switchgear for convenient wiring as described in claim 8, characterized in that, The surface of the abutment post (44) is engraved with a rough texture. The abutment post (44) and the wire (3) abut against each other. The wire (3) is distributed between two discs (412) on the abutment post (44).

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