Integrated anti-loose splayed tail plug inner frame

Abstract

The application relates to the technical field of plugs and particularly relates to an integrated anti-loosening splayed tail plug inner frame, which comprises an inner frame block, characterized in that two insertion grooves are formed in one side surface of the inner frame block, two connecting plates are fixedly connected to one side surface of the principle insertion groove of the inner frame block, and an anti-loosening device is arranged on the surface of the inner frame block on the side where the two connecting plates are close to each other. The anti-loosening device makes the connecting wire installed on the connecting plate on one side of the inner frame block more stable and firm. The integrated plug inner frame of the splayed tail plug can be better connected with the plug connecting wire in use, the inner frame block is not prone to loosening and breaking of the welding position due to swinging of the connecting wire in subsequent assembly and use process, the connecting wire is prevented from being separated, abnormal use or open-circuit of the plug is avoided, the use effect of the plug is improved, and the service life of the plug inner frame is prolonged.

Description

Technical Field

[0001] This invention relates to the field of plug technology, and more particularly to an integrated anti-loosening figure-eight plug inner frame. Background Technology

[0002] The figure-eight plug is a common type of electrical plug in daily life. Its plug end is shaped like the number 8 and has two sockets for matching the corresponding metal guide rod on the electrical appliance. The internal structure of the figure-eight plug is mainly composed of a plug inner frame. In order to improve the convenience of use and the efficiency of operation, the existing inner frame will integrate some components to form an integrated plug inner frame. The inner frame is then fixed to the various parts of the plug to maintain the normal production and use of the plug.

[0003] In the traditional manufacturing process of figure-eight plug inner frames, the two connecting wires of the plug are respectively connected to the inner walls of two metal connecting plates on one side of the plug inner frame. Then, the plug wires are welded to the connecting plates using a welding machine. After that, insulation and other components are covered and fixed to the surface of the inner frame. However, in actual operation, it has been found that during the manufacturing process of the plug, the plug wires on one side of the inner frame are swung around. Frequent swinging and pulling can cause tearing damage to the welding position of the connecting plates, and even cause the welding points to loosen and detach. This affects normal connection production or daily use, leading to abnormal situations such as open circuits, and also affects the use effect and practicality of the plug inner frame. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where, during the manufacturing process of plugs, the plug wires on one side of the inner frame are subject to swinging and pulling operations. Frequent swinging and pulling can cause tearing damage to the welding position of the connecting piece, and even cause the welding point to loosen and detach, thus affecting normal connection production or daily use, leading to abnormal situations such as open circuits, and also affecting the use effect and practicality of the plug inner frame. Therefore, this invention proposes an integrated anti-loosening figure-eight plug inner frame.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated anti-loosening figure-eight plug inner frame, comprising an inner frame block, wherein two slots are formed on one side surface of the inner frame block, and two connecting pieces are fixedly connected to one side surface of the slots of the inner frame block. An anti-loosening device is provided on the surface of the inner frame block on the side where the two connecting pieces are close to each other. The anti-loosening device makes the connecting wires installed on the connecting pieces on one side of the inner frame block more stable and secure, and less likely to loosen or detach during assembly and use, ensuring the normal use of the figure-eight plug and preventing abnormal short circuits. A protective device is provided on one side surface of the inner frame block on the side of the anti-loosening device. The protective device forms a closed protection for the anti-loosening device on the inner frame block, preventing abnormal movement and damage to the components of the anti-loosening device, and facilitating the installation and fixing of components on the surface of the inner frame block.

[0006] The effect achieved by the above components is as follows: When assembling the inner frame of the figure-eight plug, firstly, the two connecting wires of the plug are inserted into the inner walls of the two connecting plates on the surface of the inner frame. Then, using appropriate equipment, the connecting wires and connecting plates are welded and fixed between the two components. Next, the anti-loosening device on one side of the inner frame is operated to reinforce and stabilize the plug connecting wires on the inner wall of the connecting plates. Then, a protective device is used to cover and shield the relevant parts of the protective device. Finally, the insulating sheath and other components of the figure-eight plug are wrapped around the surface of the inner frame. At this time, when the integrated inner frame of the figure-eight plug is in use, it can better and more stably connect with the plug connecting wires. It is less likely that the connecting wires will loosen or break during subsequent assembly and use due to the swing of the connecting wires, causing the connecting wires to detach and resulting in abnormal use or open circuit of the plug. This improves the use effect of the plug and extends the service life of the inner frame.

[0007] Preferably, the anti-loosening device includes a rotating frame, which is fixedly connected to the side surfaces of two connecting plates on the inner frame block that are close to each other. The rotating frame has a U-shaped cross-section. Rotating plates are rotatably connected to the arc surfaces at both ends of the rotating frame. An arc plate is fixedly connected to one side surface of the rotating plate. A connecting plate is fixedly connected to one side surface of the rotating frame. A screw is fixedly connected to the surface of the connecting plate. A fixing rod is slidably connected to the arc surface of the screw. The fixing rod has a trapezoidal cross-section. Stabilizing rods are fixedly connected to both sides of the surface of the connecting plate. A stop block is fixedly connected to one end of the stabilizing rod. Limiting holes are respectively opened on the surface of the fixing rod on both sides of the screw. The stabilizing rod is slidably connected to the inner wall of the limiting hole. A nut is threaded onto the arc surface of the screw.

[0008] The effect achieved by the above components is as follows: When assembling the inner frame of the figure-eight plug, firstly, the two connecting wires of the plug are inserted into the inner walls of the two connecting plates on the surface of the inner frame. Then, using appropriate equipment, the connecting wires and connecting plates are welded and fixed between the two components. Then, the nut on one side of the inner frame is operated, causing the nut to rotate on the arc surface of the screw. Due to the sliding limiting effect of the stabilizing rod and the limiting hole on the surface of the fixing rod on the connecting plate, the fixing rod slides stably on the screw. At this time, the rotating plate will rotate on the arc surface of the rotating frame, thereby driving the arc plate fixedly connected on one side of the rotating plate to rotate and insert into the groove on the surface of the connecting plate until the arc plate contacts and squeezes the plug wires on the inner wall of the connecting plate. At this time, when the integrated inner frame of the figure-eight plug is used, it can better connect stably with the plug connecting wires. It is less likely that the inner frame will loosen or break at the welding position due to the swing of the connecting wires during subsequent assembly and use, causing the connecting wires to detach, resulting in abnormal use of the plug or open circuit. This improves the use effect of the plug and extends the service life of the inner frame.

[0009] Preferably, an operating block is fixedly connected to the surface of the nut, and the surface of the operating block is provided with several anti-slip stripes.

[0010] The effect achieved by the above components is as follows: by setting the operating block, the nut can rotate on the screw, and when the stabilizing rod is pressed and fixed in position, the nut can be rotated more conveniently and quickly, so that the rotating plate can rotate more quickly during use, resulting in the arc plate being able to better press against the surface of the connecting line, improving the convenience of fixing the position of the arc plate, and also improving the convenience of using the inner frame block to a certain extent.

[0011] Preferably, the inner wall of the arc-shaped plate is fixedly connected with a reinforcing pad, the reinforcing pad being a metal pad, and the inner wall of the reinforcing pad having a plurality of evenly distributed reinforcing protrusions.

[0012] The effect achieved by the above components is as follows: by setting the reinforcing pad, when the contact of the arc plate and the surface of the connecting wire are pressed together, the reinforcing protrusion of the reinforcing pad on the inner wall of the arc plate is pressed against the connecting wire, which further increases the friction of the pressing and fixing. This ensures a more stable connection of the components of the figure-eight plug when the connecting wire is loosened during welding with the connecting piece, and improves the effectiveness and functionality of the anti-loosening device.

[0013] Preferably, torsion springs are respectively fitted onto the arc surfaces at both ends of the rotating frame, and the two ends of the torsion springs are respectively fixedly connected to the surfaces of the rotating frame and the rotating plate.

[0014] The effect achieved by the above components is as follows: by setting the torsion spring, after the connecting plate and the connecting line are connected and fixed by welding or other methods, the rotating plate can rotate under the torsional force of the torsion spring, so that the fixedly assembled arc plate quickly contacts and presses against the connecting line on the inner wall of the connecting plate, which improves the convenience of using the anti-loosening device and provides more efficient and faster reinforcement protection for the connecting line.

[0015] Preferably, bearings are fixedly connected to the arc surfaces at both ends of the rotating frame, the inner ring of the bearing is fixedly connected to the arc surface of the rotating frame, and the outer ring of the bearing is fixedly connected to the inner wall of the rotating frame.

[0016] The effects achieved by the above components are as follows: by setting the bearings, the rotating plate rotates more smoothly on the arc surface of the rotating frame, and the rotational wear between the rotating plate and the rotating frame is reduced, making it less likely for the components to malfunction. This makes the contact and pressing of the arc plate in the groove of the connecting piece more stable, which can better ensure the assembly stability of the connecting line and improve the high efficiency of the inner frame block assembly.

[0017] Preferably, a connecting groove is formed on the surface of the arc-shaped plate near the screw, and the stabilizing rod is slidably connected to the inner wall of the connecting groove.

[0018] The effect achieved by the above components is as follows: by setting the connecting groove, when the fixing rod contacts and squeezes the rotating plate, it ensures stable contact between the fixing rod and the rotating plate, making it less likely for the rotating plate to shake or shift abnormally. This allows the arc plate to better reinforce and squeeze the connecting line in the inner wall of the connecting piece, thus improving the effectiveness of the anti-loosening device.

[0019] Preferably, the protective device includes two rotating shafts, which are fixedly connected to the surface of the inner frame block, and the two rotating shafts are located on both sides of the rotating frame on the surface of the inner frame block. Fixed plates are rotatably connected to the arc surfaces of the two rotating shafts, and bolts are inserted through the surface of the fixed plates. A protective cover is provided on the surface of the inner frame block at the position of the screw component. The cross-section of the protective cover is U-shaped, and threaded grooves are opened on both sides of the surface of the protective cover. The bolts are threadedly connected to the inner wall of the threaded grooves.

[0020] The effect achieved by the above components is as follows: When the anti-loosening device is used to reinforce and stabilize the connecting wires on the connecting piece, the protective cover is placed on the surface of the rotating frame, covering all components at the position of the rotating frame. Then, the fixing plates on the two rotating shafts are rotated so that the fixing plates contact and press against one side surface of the protective cover. Then, the thread is inserted into the surface of the fixing plate, and the bolt is continuously rotated until the thread is threaded into the thread groove on the surface of the protective cover, thereby stabilizing the position of the protective cover. At this time, when the anti-loosening device is used to reinforce and protect the inner frame block, it can cover and protect all components of the anti-loosening device, which facilitates the subsequent covering of the insulating skin and other components on the surface of the inner frame block. This ensures the normal installation and production of the plug, and is less likely to cause puncture damage or other negative impacts to the insulating skin and other components, thus extending the normal use of the figure-eight plug.

[0021] Preferably, a washer, which is a rubber ring, is fitted onto the arc surface of the bolt.

[0022] The effect achieved by the above components is as follows: by setting the washer, when the bolt is inserted into the surface of the fixed plate, the bolt can be more closely contacted with the surface of the fixed plate, thereby making the bolt more firmly connected to the inner wall of the thread groove, less prone to rotation and loosening, better ensuring the stable assembly of the protective cover, and improving the stability of the protective cover in use.

[0023] Preferably, the protective cover has reinforcing grooves on both sides of its surface, and the fixing plate is inserted into the inner wall of the reinforcing groove.

[0024] The effect achieved by the above components is as follows: by setting the reinforcing groove, one side of the fixing plate can be inserted into the reinforcing groove on the surface of the protective cover during installation. This ensures the temporary positional stability of the protective cover. Furthermore, when the bolts are rotated to fix the position of the protective cover, the connection and alignment with the threaded groove is more accurate and quick, improving the convenience of using the protective device and facilitating the subsequent installation of components such as insulating sheets.

[0025] In summary, the beneficial effects of the present invention are as follows:

[0026] In this invention, the integrated inner frame of the figure-eight plug can better and more stably connect with the plug connecting wire during use. It is less likely that the inner frame will loosen or break at the welding position due to the swing of the connecting wire during subsequent assembly and use, causing the connecting wire to detach and resulting in abnormal use of the plug or open circuit. This improves the use effect of the plug and extends the service life of the inner frame.

[0027] In this invention, when the anti-loosening device reinforces and protects the inner frame block, it can shield and protect the various components of the anti-loosening device, thereby facilitating the subsequent covering of the insulating skin and other components on the surface of the inner frame block. This ensures the normal installation and production of the plug, and is less likely to cause puncture damage or other negative impacts to the insulating skin and other components, thus extending the normal use of the figure-eight plug. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of the connecting piece location of the present invention;

[0030] Figure 3 This is a three-dimensional structural diagram of the anti-loosening device of the present invention;

[0031] Figure 4 This is a three-dimensional structural diagram of the arc-shaped plate position of the present invention;

[0032] Figure 5 For the present invention Figure 4 A side-view, upward-looking three-dimensional structural diagram;

[0033] Figure 6 This is an exploded three-dimensional structural diagram of the protective device of the present invention;

[0034] Figure 7 For the present invention Figure 6 A side view of the three-dimensional structure.

[0035] Legend: 1. Inner frame block; 2. Slot; 3. Connecting piece; 4. Anti-loosening device; 41. Rotating frame; 42. Rotating plate; 43. Arc plate; 44. Connecting plate; 45. Screw; 46. Fixing rod; 47. Connecting groove; 48. Nut; 49. Stabilizing rod; 410. Limiting hole; 411. Stop block; 412. Operating block; 413. Reinforcing pad; 414. Torsion spring; 415. Bearing; 5. Protective device; 51. Rotating shaft; 52. Fixing plate; 53. Protective cover; 54. Bolt; 55. Threaded groove; 56. Washer; 57. Reinforcing groove. Detailed Implementation

[0036] Reference Figure 1 and Figure 2As shown, the present invention provides a technical solution: an integrated anti-loosening figure-eight plug inner frame, including an inner frame block 1. Two slots 2 are formed on one side surface of the inner frame block 1. Two connecting pieces 3 are fixedly connected to one side surface of the inner frame block 1 via the slots 2. An anti-loosening device 4 is provided on the surface of the inner frame block 1 on the side where the two connecting pieces 3 are close to each other. The anti-loosening device 4 makes the connecting wires installed on the connecting pieces 3 on one side of the inner frame block 1 more stable and secure, preventing loosening or detachment during assembly and use, ensuring the normal use of the figure-eight plug, and reducing the risk of abnormal short circuits. A protective device 5 is provided on one side surface of the inner frame block 1 on the side of the anti-loosening device 4. The protective device 5 forms a closed protection for the anti-loosening device 4 on the inner frame block 1, preventing abnormal movement or damage to the components of the anti-loosening device 4, and facilitating the installation and fixing of components on the surface of the inner frame block 1. When the inner frame block of the figure-eight plug... 1. During assembly, first insert the two connecting wires of the plug into the inner walls of the two connecting pieces 3 on the surface of the inner frame block 1. Then, use appropriate equipment to weld and fix the connecting wires to the connecting pieces 3. Next, operate the anti-loosening device 4 on one side of the inner frame block 1 to reinforce and stabilize the plug connecting wires on the inner wall of the connecting pieces 3. Then, use the protective device 5 to cover and shield the relevant parts of the protective device 5. Finally, wrap the insulating sheath and other parts of the figure-eight plug on the surface of the inner frame block 1. At this time, the integrated plug inner frame of the figure-eight plug can better and more stably connect with the plug connecting wires during use. It is less likely that the connecting wires will loosen or break during subsequent assembly and use due to the swing of the connecting wires, causing the connecting wires to detach and resulting in abnormal use or open circuit of the plug. This improves the use effect of the plug and extends the service life of the plug inner frame.

[0037] Reference Figure 1 - Figure 5As shown in this embodiment: the anti-loosening device 4 includes a rotating frame 41, which is fixedly connected to the two connecting pieces 3 on the inner frame block 1 on their adjacent sides. The rotating frame 41 has a U-shaped cross-section, and rotating plates 42 are rotatably connected to the arc surfaces at both ends of the rotating frame 41. An arc plate 43 is fixedly connected to one side surface of the rotating plate 42, and a connecting plate 44 is fixedly connected to one side surface of the rotating frame 41. A screw 45 is fixedly connected to the surface of the connecting plate 44, and a fixing rod is slidably connected to the arc surface of the screw 45. 46. ​​The cross-section of the fixing rod 46 is trapezoidal. Stabilizing rods 49 are fixedly connected to both sides of the surface of the connecting plate 44. A stop block 411 is fixedly connected to one end of the stabilizing rod 49. Limiting holes 410 are respectively opened on both sides of the screw 45 on the surface of the fixing rod 46. The stabilizing rod 49 is slidably connected to the inner wall of the limiting hole 410. A nut 48 is threadedly connected to the arc surface of the screw 45. When the inner frame block 1 of the figure-eight plug is used and assembled, the two connecting wires of the plug are first inserted into the two connecting pieces on the surface of the inner frame block 1. In the inner wall of the 3rd component, the connecting wire and the connecting piece 3 are welded and fixed between the two components using appropriate equipment. Then, the nut 48 on one side of the inner frame block 1 is operated to rotate on the arc surface of the screw 45. Due to the sliding limiting effect of the stabilizing rod 49 on the connecting plate 44 and the limiting hole 410 on the surface of the fixing rod 46, the fixing rod 46 slides stably on the screw 45. At this time, the rotating plate 42 will rotate on the arc surface of the rotating frame 41, thereby driving the arc plate 43 fixedly connected on one side of the rotating plate 42 to rotate and insert into the groove on the surface of the connecting piece 3 until the arc plate 43 contacts and squeezes the plug wire on the inner wall of the connecting piece 3. At this time, the integrated plug inner frame of the figure-eight plug can better connect stably with the plug connecting wire during use, and it is not easy for the inner frame block 1 to loosen or break at the welding position due to the swing of the connecting wire during subsequent assembly and use, causing the connecting wire to detach, resulting in abnormal use of the plug or open circuit. This improves the use effect of the plug and extends the service life of the plug inner frame.

[0038] Reference Figure 1 - Figure 5As shown in this embodiment: an operating block 412 is fixedly connected to the surface of the nut 48. The surface of the operating block 412 is provided with several anti-slip stripes. By setting the operating block 412, the nut 48 can rotate on the screw 45. When the stabilizing rod 49 is pressed and fixed in position, the nut 48 can be rotated more conveniently and quickly. This allows the rotating plate 42 to rotate more quickly during use, resulting in the arc plate 43 being able to better press against the surface of the connecting line. This improves the convenience of fixing the position of the arc plate 43 and also improves the ease of use of the inner frame block 1 to a certain extent. The inner wall of the device is fixedly connected with a reinforcing pad 413, which is a metal pad. The inner wall of the reinforcing pad 413 has several evenly distributed reinforcing protrusions. By setting the reinforcing pad 413, when the contact plate 43 contacts and presses against the surface of the connecting wire, the reinforcing protrusions of the reinforcing pad 413 on the inner wall of the arc plate 43 press against the connecting wire, which further increases the friction of the pressing and fixing. This better ensures the stable connection of each component of the figure-eight plug during assembly when the connecting wire is wobbling and loose when it is welded to the connecting piece 3, and improves the use effect and functionality of the anti-loosening device 4.

[0039] Reference Figure 1 - Figure 5As shown in this embodiment: Torsion springs 414 are respectively fitted onto the arc surfaces at both ends of the rotating frame 41. The two ends of the torsion springs 414 are fixedly connected to the surfaces of the rotating frame 41 and the rotating plate 42, respectively. Through the torsion springs 414, after the connecting piece 3 and the connecting line are connected and fixed by welding or other methods, the rotating plate 42 can rotate under the torsional force of the torsion springs 414. This allows the fixedly assembled arc plate 43 to quickly contact and press against the connecting line on the inner wall of the connecting piece 3, improving the ease of use of the anti-loosening device 4 and providing more efficient and rapid reinforcement protection for the connecting line. Bearings 415 are fixedly connected to the arc surfaces at both ends of the rotating frame 41. The inner ring of the bearing 415 is fixedly connected to the arc surface of the rotating frame 41, and the outer ring of the bearing 415 is fixedly connected to the inner wall of the rotating frame 41. Through the bearings 415, the rotating plate 42 rotates under the torsional force of the rotating frame 41. When rotating on the arc surface, the rotation is smoother and more fluid, reducing rotational wear between the rotating plate 42 and the rotating frame 41, making it less likely for the components to malfunction. This makes the arc plate 43 more stable when it contacts and presses into the groove of the connecting piece 3, ensuring better assembly stability of the connecting line and improving the efficiency of the inner frame block 1. A connecting groove 47 is provided on the side of the arc plate 43 near the screw 45. The stabilizing rod 49 is slidably connected to the inner wall of the connecting groove 47. Through the setting of the connecting groove 47, when the fixing rod 46 contacts and presses the rotating plate 42, it ensures stable contact between the fixing rod 46 and the rotating plate 42, making it less likely for the rotating plate 42 to wobble or shift abnormally. This allows the arc plate 43 to better reinforce and press the connecting line in the inner wall of the connecting piece 3, improving the effectiveness of the anti-loosening device 4.

[0040] Reference Figure 1 , Figure 3 and Figure 6As shown in this embodiment: the protective device 5 includes two rotating shafts 51, which are fixedly connected to the surface of the inner frame block 1, and the two rotating shafts 51 are located on both sides of the rotating frame 41 on the surface of the inner frame block 1. Fixing plates 52 are rotatably connected to the arc surfaces of the two rotating shafts 51, and bolts 54 are inserted through the surface of the fixing plates 52. A protective cover 53 is provided on the surface of the inner frame block 1 at the location of the screw 45 component. The protective cover 53 has a U-shaped cross-section, and threaded grooves 55 are respectively opened on both sides of the surface of the protective cover 53. The bolts 54 are threadedly connected to the inner walls of the threaded grooves 55. When the anti-loosening device 4 is used to reinforce and stabilize the connecting line on the connecting piece 3, the protective cover 53 is covered on the surface of the rotating frame 41. The components at the position of the rotating frame 41 are shielded and covered. Then, the fixing plates 52 on the two rotating shafts 51 are rotated so that the fixing plates 52 contact and press against one side surface of the protective cover 53. Then, the thread is inserted through the surface of the fixing plate 52. Then, the bolt 54 is rotated until the thread is threadedly connected to the thread groove 55 on the surface of the protective cover 53, thereby stabilizing the position of the protective cover 53. At this time, when the anti-loosening device 4 is reinforcing and protecting the inner frame block 1, it can shield and protect the components of the anti-loosening device 4. This makes it easier to cover the surface of the inner frame block 1 with the insulating skin and other components, ensuring the normal installation and production of the plug and preventing negative impacts such as puncture damage to the insulating skin and other components, thus extending the normal use of the figure-eight plug.

[0041] Reference Figure 1 , Figure 3 and Figure 7 As shown in this embodiment: a washer 56 is fitted on the arc surface of the bolt 54. The washer 56 is a rubber ring. By setting the washer 56, when the bolt 54 is inserted into the surface of the fixing plate 52, the bolt 54 can fit more closely to the surface of the fixing plate 52, thereby making the bolt 54 more firmly connected to the inner wall of the threaded groove 55. It is not easy to rotate and loosen, which better ensures the stable assembly of the protective cover 53 and improves the stability of the protective cover 53 in use. Reinforcing grooves 57 are respectively opened on both sides of the surface of the protective cover 53. The fixing plate 52 is inserted into the inner wall of the reinforcing groove 57. By setting the reinforcing groove 57, when the protective cover 53 is installed, one side of the fixing plate 52 can be inserted into the reinforcing groove 57 on the surface of the protective cover 53. This can ensure the temporary stability of the protective cover 53. Then, when the bolt 54 rotates to fix the position of the protective cover 53, it can be more accurately and quickly connected and aligned with the threaded groove 55, improving the convenience of using the protective device 5 and making it easier to install the insulating skin and other components.

[0042] Working principle: When assembling the inner frame block 1 of the figure-eight plug, firstly, insert the two connecting wires of the plug into the inner walls of the two connecting pieces 3 on the surface of the inner frame block 1. Then, using appropriate equipment, weld and fix the connecting wires and connecting pieces 3 between the two components. At this time, the arc plate 43 fixedly connected on the rotating plate 42 will rotate under the torsional force of the torsion spring 414 on the rotating frame 41, causing the arc plate 43 to rotate and insert into the groove on the surface of the connecting piece 3. Then, rotate the operating block 412 fixedly connected on the nut 48, causing the nut 48 to rotate on the arc surface of the screw 45. Due to the sliding limiting effect of the stabilizing rod 49 on the connecting plate 44 and the limiting hole 410 on the surface of the fixing rod 46, the fixing rod 46 is able to rotate on the arc surface of the screw 45. With stable sliding on the screw 45, the rotating plate 42 will rotate on the arc surface of the rotating frame 41, thereby driving the arc plate 43 fixedly connected to one side of the rotating plate 42 to contact and squeeze the plug wire on the inner wall of the connecting piece 3. The reinforcing protrusion on the reinforcing pad 413 fixedly connected to the inner wall of the arc plate 43 will also squeeze the plug wire. At this time, the integrated plug inner frame of the figure-eight plug can better connect stably with the plug connecting wire during use. It is less likely that the inner frame block 1 will loosen or break at the welding position due to the swing of the connecting wire during subsequent assembly and use, causing the connecting wire to detach, resulting in abnormal use of the plug or open circuit. This improves the use effect of the plug and extends the service life of the plug inner frame.

[0043] When the anti-loosening device 4 is used to reinforce and stabilize the connecting wire on the connecting piece 3, the protective cover 53 is placed on the surface of the rotating frame 41 to cover all the components at the position of the rotating frame 41. Then, the fixing plate 52 on the two rotating shafts 51 is rotated so that the fixing plate 52 contacts and presses against one side surface of the protective cover 53, and the fixing plate 52 is inserted into the reinforcement groove 57 on the surface of the protective cover 53. Then, the threaded part with the washer 56 is inserted into the surface of the fixing plate 52, and the bolt 54 is rotated until the thread is threadedly connected to the threaded groove 55 on the surface of the protective cover 53, thereby stabilizing the position of the protective cover 53. At this time, when the anti-loosening device 4 is used to reinforce and protect the inner frame block 1, it can cover and protect all the components of the anti-loosening device 4, which makes it easier to cover the surface of the inner frame block 1 with the insulating skin and other components. This ensures the normal installation and production of the plug and is less likely to cause puncture damage or other negative impacts to the insulating skin and other components, thus extending the normal use of the figure-eight plug.

Claims

1. An integrated anti-loosening figure-eight plug inner frame, comprising an inner frame block (1), characterized in that: Two slots (2) are provided on one side surface of the inner frame block (1). Two connecting pieces (3) are fixedly connected to one side surface of the slots (2) of the inner frame block (1). An anti-loosening device (4) is provided on the side of the inner frame block (1) where the two connecting pieces (3) are close to each other. The anti-loosening device (4) makes the connecting wire installed on the connecting piece (3) on one side of the inner frame block (1) more stable and firm, and it is not easy to loosen or detach during assembly and use, ensuring the normal use of the figure-eight plug and preventing abnormal short circuits. A protective device (5) is provided on one side surface of the inner frame block (1) where the anti-loosening device (4) is located. The protective device (5) forms a closed protection for the anti-loosening device (4) on the inner frame block (1), making it difficult for the components of the anti-loosening device (4) to undergo abnormal changes and damage, and facilitating the installation and fixing of the components on the surface of the inner frame block (1).

2. The integrated anti-loosening figure-eight plug inner frame according to claim 1, characterized in that: The anti-loosening device (4) includes a rotating frame (41), which is fixedly connected to the two connecting pieces (3) on the inner frame block (1) on one side of each other. The rotating frame (41) has a U-shaped cross-section. The two ends of the rotating frame (41) are respectively rotatably connected to rotating plates (42). An arc plate (43) is fixedly connected to one side of the rotating plate (42). A connecting plate (44) is fixedly connected to one side of the rotating frame (41). A screw (45) is fixedly connected to the surface of the connecting plate (44). A fixing rod (46) is slidably connected to the arc surface of the screw (45). The cross section of the fixing rod (46) is trapezoidal. A stabilizing rod (49) is fixedly connected to both sides of the surface of the connecting plate (44). A stop block (411) is fixedly connected to one end of the stabilizing rod (49). Limiting holes (410) are opened on both sides of the screw (45) on the surface of the fixing rod (46). The stabilizing rod (49) is slidably connected to the inner wall of the limiting hole (410). A nut (48) is threadedly connected to the arc surface of the screw (45).

3. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: An operating block (412) is fixedly connected to the surface of the nut (48), and the surface of the operating block (412) is provided with several anti-slip stripes.

4. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: The inner wall of the arc plate (43) is fixedly connected with a reinforcing pad (413), which is a metal pad, and the inner wall of the reinforcing pad (413) is fixedly connected with a number of evenly distributed reinforcing protrusions.

5. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: The two ends of the rotating frame (41) are respectively fitted with torsion springs (414), and the two ends of the torsion springs (414) are respectively fixedly connected to the surfaces of the rotating frame (41) and the rotating plate (42).

6. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: Bearings (415) are fixedly connected to the arc surfaces at both ends of the rotating frame (41). The inner ring of the bearing (415) is fixedly connected to the arc surface of the rotating frame (41), and the outer ring of the bearing (415) is fixedly connected to the inner wall of the rotating frame (41).

7. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: A connecting groove (47) is provided on the surface of the arc plate (43) near the screw (45), and the stabilizing rod (49) is slidably connected to the inner wall of the connecting groove (47).

8. The integrated anti-loosening figure-eight plug inner frame according to claim 2, characterized in that: The protective device (5) includes two rotating shafts (51), which are fixedly connected to the surface of the inner frame block (1) respectively. The two rotating shafts (51) are located on both sides of the rotating frame (41) on the surface of the inner frame block (1). Fixed plates (52) are rotatably connected to the arc surfaces of the two rotating shafts (51). Bolts (54) are inserted through the surface of the fixed plates (52). A protective cover (53) is provided on the surface of the inner frame block (1) at the position of the screw (45) component. The cross-section of the protective cover (53) is "U" shaped. Threaded grooves (55) are opened on both sides of the surface of the protective cover (53). The bolts (54) are threadedly connected to the inner wall of the threaded grooves (55).

9. The integrated anti-loosening figure-eight plug inner frame according to claim 8, characterized in that: A washer (56) is fitted on the arc surface of the bolt (54), and the washer (56) is a rubber ring.

10. The integrated anti-loosening figure-eight plug inner frame according to claim 8, characterized in that: The protective cover (53) has reinforcement grooves (57) on both sides of its surface, and the fixing plate (52) is inserted into the inner wall of the reinforcement groove (57).

Images