Insulating protective sleeve for wiring terminal

Abstract

The utility model relates to an insulating protective sleeve for a wiring terminal. The insulating protective sleeve comprises a first sleeve body and an angle adjusting mechanism, the angle adjusting mechanism comprises a terminal side connecting part and a cable side connecting part; according to the protective sleeve, on the basis of a first cylindrical main body of a terminal side connecting part, a plurality of arc-shaped sheet-shaped extension bodies extending from the end part are enclosed to form an open mounting space, and then a second cylindrical main body of a cable side connecting part is movably connected with the first cylindrical main body, so that continuous and smooth adjustment is realized; and various complex installation scenes such as direct connection, bending, inclination and the like can be easily coped with. And the shielding plate made of a flexible material slides in the shielding plate accommodating groove in a self-adaptive manner and is tightly attached to the arc-shaped surface, so that a gap between the terminal side connecting part and the cable side connecting part is filled, a sealing barrier is formed, and dust and water vapor are prevented from invading from a rotating gap. According to the protection sleeve, multi-angle free adjustment of the wiring terminal and the drainage cable is realized, reliable protection at any angle is ensured, and the angle limitation of a traditional protection device is thoroughly broken through.

Description

Technical Field

[0001] This application relates to the field of power equipment protection technology, specifically to an insulating protective sleeve for wiring terminals. Background Art

[0002] In electrical connection systems, the connection point between the terminal block and the current-carrying cable is a critical node for current transmission, and its insulation performance directly affects the safety and stability of the entire circuit system. However, existing protective measures for connection points have many limitations: traditional insulating sleeves are mostly fixed-angle integrated structures, which are difficult to adapt to the multi-angle connection requirements between the terminal block and the current-carrying cable in different installation scenarios. Forcing them on can easily lead to tearing of the sleeve or poor sealing, creating safety hazards; some adjustable protective devices have complex structural designs, which increases manufacturing costs, and the excessive number of connecting parts leads to low assembly efficiency. Furthermore, dust and moisture can easily accumulate in the gaps, reducing insulation performance. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this application provides an insulating protective sleeve for wiring terminals, specifically adopting the following technical solution:

[0004] An insulating protective sleeve for a terminal block is provided for protecting the connection point between the terminal block and the lead cable. The insulating protective sleeve includes a first sleeve body and an angle adjustment mechanism. The first sleeve body is fitted onto the terminal block, and the angle adjustment mechanism is fitted onto the connection point between the terminal block and the lead cable.

[0005] The angle adjustment mechanism includes a terminal-side connection part and a cable-side connection part;

[0006] The terminal-side connection portion is provided with a hollow first cylindrical body. One end of the first cylindrical body is provided with a plurality of arc-shaped extensions. The connection position between the first cylindrical body and the extensions is provided with mounting holes, which penetrate radially through the first cylindrical body. One side of the extension is connected to the side surface of the first cylindrical body, and the other side of the extension extends in a direction away from the first cylindrical body. The other side of the extension encloses and forms an installation space for the cable-side connection portion to extend into.

[0007] The cable-side connection portion is provided with a hollow second cylindrical body. The second cylindrical body has a first end near the terminal-side connection portion and a second end away from the terminal-side connection portion. The first end is provided with a connecting ear symmetrically arranged along the axis of the second cylindrical body, and the connecting ear is provided with a mounting shaft perpendicular to the axis of the second cylindrical body. The mounting shaft is connected to the mounting hole.

[0008] Optionally: The extension body includes two first extension bodies and two second extension bodies symmetrically arranged along the axis of the first cylindrical body, with a first gap between the first extension bodies and the second extension bodies on the same side; a cover plate receiving groove is provided on the side of the first cylindrical body located between the two first extension bodies.

[0009] Optionally: A cover plate made of flexible material is fixedly connected to the outer surface of the second cylindrical body, and the cover plate extends into the cover plate receiving groove.

[0010] Optionally: The two first extensions are provided with arc-shaped limiting devices on their opposite sides, the arc-shaped limiting devices being used to restrict the movement of the baffle along the edge of the first extension.

[0011] Optionally: Both the terminal-side connection and the cable-side connection are provided with a first slit, which is used to allow the angle adjustment mechanism to be opened to a certain angle.

[0012] Optionally, the second extension is provided with at least one second slit, the second slit being used to provide deformation space for the second extension.

[0013] Optionally, the first cylindrical body has at least one third slit near the second extension, the third slit being used to provide deformation space to the compressed first cylindrical body.

[0014] Optionally, the insulating protective sleeve further includes a second sleeve body, which is sleeved on the drain cable and fixedly connected to the cable side connection portion.

[0015] Optionally: the first sleeve body and the terminal side connection part are integrally molded and connected; the second sleeve body and the cable side connection part are integrally molded and connected.

[0016] Optionally: the first sleeve body is connected to the terminal side connection part by a snap-fit ​​connection; the second sleeve body is connected to the cable side connection part by a snap-fit ​​connection.

[0017] The technical solution of this application achieves the following beneficial effects:

[0018] The insulating protective sleeve for the terminal block of this application is based on the first cylindrical body of the terminal-side connection part in the angle adjustment mechanism. Multiple arc-shaped sheet-like extensions extending from its ends enclose an open installation space. This arc-shaped structure possesses a certain degree of elastic deformation capability, providing a basic buffer for angle adjustment. Subsequently, the second cylindrical body of the cable-side connection part forms a stable rotation fulcrum with the mounting shaft and mounting hole, ensuring both the flexibility of the cable-side connection part's rotation around the axis and preventing protection failure due to excessive shaking. This allows the connection part to achieve continuous and smooth adjustment at angles of 90° and above, easily handling various complex installation scenarios such as direct connection, bending, and oblique orientation. Furthermore, with angle adjustment, a flexible material shield slides adaptively within the shield receiving groove, closely fitting the arc-shaped surface to ensure the gap between the terminal-side connection part and the cable-side connection part is filled, forming a sealing barrier, enhancing the sealing effect, and preventing dust and moisture from entering through the rotation gap. This protective sleeve enables multi-angle free adjustment of the terminal block and the lead cable, ensuring reliable protection at any angle, completely breaking the angle limitations of traditional protective devices. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the insulating protective sleeve used for wiring terminals in the embodiments of this application.

[0020] Figure 2 This is a side view of the insulating protective sleeve for the wiring terminal in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the overall structure of the cable-side connection portion in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the overall structure of the terminal side connection portion in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the back structure of the terminal side connection portion in an embodiment of this application.

[0024] Figure 6 for Figure 5 A magnified structural diagram of position A in the middle.

[0025] Figure 7 This is a schematic diagram showing the state of the insulating protective sleeve after angle adjustment in the embodiments of this application.

[0026] Figure 8 This is a schematic diagram showing the state of the insulating protective sleeve in use in the embodiments of this application.

[0027] The specific meanings of the reference numerals in the attached figures are as follows:

[0028] 1-Second sleeve; 2-Cable side connection part; 21-Second cylindrical body; 22-Connecting ear; 23-Mounting shaft; 24-Shelter plate; 3-Terminal side connection part; 31-First cylindrical body; 311-Third slit; 32-First extension body; 321-Arc-shaped limit; 33-Second extension body; 331-Second slit; 34-Mounting hole; 35-Snap-in groove; 36-Shelter plate receiving groove; 4-First sleeve; 5-Wire terminal; 6-Draining cable; 7-First slit. DETAILED DESCRIPTION

[0029] The present application will now be further described with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application and should not be construed as limiting the scope of protection of the present application. It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present application.

[0030] The insulating protective sleeve in this embodiment is mainly used as a protective device for power equipment. It is generally made of high-performance transparent insulating material. It is primarily used to cover and protect the terminals and related components of power equipment, such as insulators, clamps, and connectors, to prevent safety hazards such as short circuits and discharges caused by foreign object contact, small animal intrusion, rain and snow erosion, or accidental human contact. It is applicable to the insulation protection of power equipment and related components of various voltage levels. This insulating protective sleeve can be applied to power equipment such as circuit breakers, composite surge arresters, disconnect switches, drop-out surge arresters, drop-out fuses, cable head protection, high-voltage transformers, voltage transformers (PTs), overhead conductor warnings, W32 circuit breakers, and ceramic surge arresters.

[0031] It should be noted that the insulating protective sleeve in this embodiment generally uses a high light transmittance insulating material, which combines high insulation and weather resistance. This means it meets the insulation requirements of the corresponding voltage level, effectively blocks the risk of electric arc and leakage, and allows maintenance personnel to directly observe the equipment's operating status without frequent disassembly and inspection. Simultaneously, this insulating protective sleeve also possesses environmental resistance properties such as UV resistance, high and low temperature resistance, moisture resistance, and salt spray resistance, making it suitable for long-term outdoor use.

[0032] Example 1:

[0033] Specifically, such as Figure 1 and Figure 2As shown in Embodiment 1 of this application, an insulating protective sleeve for a terminal block 5 is disclosed, comprising a first sleeve body 4, an angle adjustment mechanism, and a second sleeve body 1. The first sleeve body 4 is sleeved on the terminal block 5 and is made of high-strength polyvinyl chloride (PVC), which has good insulation properties and aging resistance, and can work stably within a wide range of ambient temperatures. The angle adjustment mechanism is sleeved at the connection position between the terminal block 5 and the lead-in cable 6, and is made entirely of modified polypropylene, which has high mechanical strength and a certain degree of elasticity, suitable for the deformation requirements during angle adjustment.

[0034] Specifically, in this embodiment 1, the angle adjustment mechanism includes a terminal-side connecting part 3 and a cable-side connecting part 2. Wherein... Figure 4 As shown, the terminal side connection part 3 is provided with a hollow first cylindrical body 31, one end of which is provided with a plurality of arc-shaped extensions. The arc design of the extensions gives them good elasticity, and the arc surface of the extensions can be used to seal the end of the first cylindrical body 31.

[0035] Furthermore, the extension body described in this embodiment 1 includes two first extension bodies 32 and two second extension bodies 33 symmetrically arranged along the axis of the first cylindrical body 31. A first gap is provided between the first extension bodies 32 and the second extension bodies 33 located on the same side. This first gap can divide the extension body into two independent units, that is, it provides deformation space, so that the extension body can better adapt to the rotation of the cable side connection part 2 during the angle adjustment process, avoiding damage caused by rigid contact. At the same time, during the angle adjustment process, only the second extension body 33 is deformed, without affecting the first extension body 32.

[0036] Furthermore, in this embodiment, one side of the extension is connected to the side surface of the first cylindrical body 31, and the other side extends in the direction away from the first cylindrical body 31. The extension forms an installation space for the cable-side connection part 2 to extend into, which provides sufficient space for the rotation of the cable-side connection part 2.

[0037] Furthermore, such as Figure 3As shown, in this embodiment 1, the cable-side connecting part 2 is provided with a hollow second cylindrical body 21. The second cylindrical body 21 has a first end near the terminal-side connecting part 3 and a second end away from the terminal-side connecting part 3. The first end is provided with a connecting ear 22 symmetrically arranged along the axis of the second cylindrical body 21. The connecting ear 22 is provided with a mounting shaft 23 perpendicular to the axis of the second cylindrical body 21. In this embodiment 1, the terminal-side connecting part 3 is provided with a mounting hole 34 at the connection position between the first cylindrical body 31 and the first extension 32. The mounting hole 34 passes through the radial direction of the first cylindrical body 31. The mounting hole 34 can keep the cable-side connecting part 2 fixed and has a certain rotation capability. The terminal-side connecting part 3 and the cable-side connecting part 2 can be connected by the mounting shaft 23 and the mounting hole 34, so that the two can rotate smoothly and avoid excessive shaking, and achieve flexible angle adjustment. It should be noted that, to ensure that the terminal-side connecting part 3 and the cable-side connecting part 2 remain fixed after angle adjustment in Embodiment 1, the mounting shaft 23 and the mounting hole 34 can adopt an interference fit structure. Alternatively, a positioning structure can be provided between the mounting shaft 23 and the mounting hole 34. For example, an annular groove can be machined on the outer circumferential surface of the mounting shaft 23, and a corresponding elastically expandable positioning protrusion can be provided on the inner wall of the mounting hole 34. When adjusted to the required angle, the positioning protrusion engages with the annular groove to achieve fixation. In addition, a friction locking structure can be used, with friction plates added to the mating surfaces of the mounting shaft 23 and the mounting hole 34. By adjusting the clamping force between the two, the angle can be fixed by friction. Furthermore, a tooth meshing structure can also be designed, with annularly distributed teeth at the end of the mounting shaft 23 and matching tooth grooves on the inner side of the mounting hole 34. After adjusting the angle, positioning is achieved through the meshing of the teeth and tooth grooves.

[0038] It should be noted that the insulating protective sleeve in this embodiment 1 also includes a second sleeve body 1, which is fitted onto the lead-in cable 6. The second sleeve body 1 and the first sleeve body 4 are made of the same material, and the second sleeve body 1 and the cable-side connecting part 2 are integrally molded. The injection molding process ensures connection strength and sealing. Similarly, the first sleeve body 4 and the terminal-side connecting part 3 can also be integrally molded, and the injection molding process ensures the stability of the connection. To facilitate the installation of the insulating protective sleeve, this embodiment 1 provides a first slit 7 on both the terminal-side connecting part 3 and the cable-side connecting part 2, facilitating the installation of the angle adjustment mechanism. During installation, the cable-side connecting part 2 can be fitted onto the corresponding connection position by prying open the first slit 7 of the terminal-side connecting part 3, eliminating the need for complex operations and tools and improving installation efficiency. Furthermore, based on the above structure, when installing and using this insulating protective sleeve, it can be installed while the equipment is energized using a dedicated installation tool, avoiding power outage operations and improving work efficiency.

[0039] It should be noted that, in combination Figure 7As shown, in this embodiment 1, when adjusting the angle of the terminal-side connecting part 3 and the cable-side connecting part 2, especially when both are adjusted to a 90° position, that is, when the axis of the terminal-side connecting part 3 and the axis of the cable-side connecting part 2 are perpendicular, the second extension 33 will block the cable-side connecting part 2. Therefore, in this embodiment 1, at least one second slit 331 is provided on the second extension 33, for example, as shown in the figure. Figure 3 As shown, in this embodiment 1, the second extension body 33 is provided with two second slits 331. One second slit 331 is located in the middle of the second extension body 33, and the other second slit 331 is located at the connection position between the second extension body 33 and the first cylindrical body 31. The second slit 331 can partially separate the second extension body 33 from the first cylindrical body 31, and can also divide the second extension body 33 into two small individual pieces. When the cable side connection part 2 is adjusted from 180° to 90°, due to the large angle adjustment range, the first cylindrical body 31 will squeeze the two small individual pieces respectively during this process, causing them to open outwards so that the cable side connection part 2 can pass through. At the same time, after the cable side connection part 2 passes through, the individual pieces that are no longer squeezed will return to their original position to maintain the covering ability. Therefore, by setting the second slit 331, the second extension body 33 can be provided with deformation space, avoiding the entire second extension body 33 from breaking due to excessive force, and enhancing the durability of the angle adjustment mechanism.

[0040] Furthermore, in this embodiment 1, two third slits 311 are provided at the position of the first cylindrical body 31 near the second extension 33. The third slits 311 cause a portion of the second cylindrical body 21 to form multiple arc-shaped piece units, and the arc-shaped piece units are symmetrically distributed. When the first cylindrical body 31 is squeezed, the squeezed arc-shaped piece units will open outward to provide a receiving space. Therefore, the third slits 311 can also provide deformation space to prevent the cable-side connection part 2 from squeezing the first cylindrical body 31 and causing it to break when it passes through, so as to ensure the structural integrity of the terminal-side connection part 3.

[0041] In addition, such as Figure 5 and Figure 6As shown, in this embodiment 1, a shield receiving groove 36 is provided on the side of the first cylindrical body 31 located between the two first extensions 32, which provides a position for the installation of the shield 24 and enhances the overall protective performance. In addition, a shield 24 made of flexible material is fixedly connected to the outer surface of the second cylindrical body 21. The shield 24 is made of silicone rubber, which has good flexibility and weather resistance. It can deform with the angle change of the cable-side connection part 2 and always maintains a good fit with the shield receiving groove 36, effectively blocking the intrusion of external dust, moisture and other substances. Furthermore, in this embodiment 1, arc-shaped limiters 321 are provided on the opposite sides of the two first extensions 32. The arc-shaped limiters 321 can constrain the shield 24. When the angle between the cable-side connection part 2 and the terminal-side connection part 3 is adjusted, it can be ensured that the shield 24 moves along the arc-shaped limiters 321, thereby ensuring that the shield 24 is in close contact with the extension, realizing the covering of the opening after the angle adjustment, and ensuring the stability of the protective function of the shield 24.

[0042] Furthermore, in this embodiment, the shield 24 extending into the shield receiving groove 36 can be structurally designed. In this embodiment, a stop structure can be provided at the end of the shield 24 to prevent the shield 24 from dislodging from the shield receiving groove 36 due to positional shift during angle adjustment or long-term use. For example, in this embodiment 1, at least one strip groove can be provided on the side wall of the shield receiving groove 36, and a stop block can be provided at the end of the shield 24. By placing the stop block in the strip groove, the stop block can be kept moving along the strip groove during angle adjustment. When the stop block moves to the longest position of the strip groove, it will restrict the shield 24 from continuing to move, thereby preventing the shield 24 from dislodging from the shield receiving groove 36.

[0043] Furthermore, to improve installation efficiency, the first body 4 and the terminal side connection part 3 can be integrally molded and connected; similarly, the second body 1 and the cable side connection part 2 can also be integrally molded and connected. This structure is suitable for scenarios where batch protection of the same type of wiring terminals 5 is required, and can also be used in live working environments.

[0044] Combination Figure 8 As shown, the installation process of the insulating protective sleeve in this embodiment 1 is as follows:

[0045] First, prepare the terminal block 5 and the lead cable 6 to be installed, ensuring that there are no obvious stains or damage at the connection points.

[0046] Then, pry open the first slit 7 of the terminal side connection part 3 and accurately insert the mounting shaft 23 of the cable side connection part 2 into the mounting hole 34 of the terminal side connection part 3. During the insertion process, the angle can be adjusted appropriately to ensure that the mounting shaft 23 is fully inserted into the mounting hole 34.

[0047] Then, by prying open the first slit 7 of the terminal side connection part 3 and the cable side connection part 2, elastic deformation occurs at the first slit 7, and the angle adjustment mechanism is fitted onto the connection position between the terminal 5 and the lead cable 6.

[0048] At this point, the terminal-side connecting part 3 will be fitted onto the terminal 5, and the cable-side connecting part 2 will be fitted onto the lead-in cable 6. Since the first sleeve 4 and the terminal-side connecting part 3 are integrally formed, the first sleeve 4 and the terminal-side connecting part 3 are firmly connected, and the first sleeve 4 completely covers the surface of the terminal 5. The second sleeve 1 and the cable-side connecting part 2 are integrally formed, and the second sleeve 1 will be fitted onto the lead-in cable 6, completing the installation of the entire insulating protective sleeve.

[0049] During use, when the connection angle changes, the cable-side connection part 2 rotates within the mounting hole 34 via the mounting shaft 23. During rotation, the shield 24 moves within the shield receiving groove 36, and the arc-shaped limiter 321 limits the shield 24 to prevent it from shifting. Simultaneously, the second slit 331 and the third slit 311 provide deformation space for the second extension 33 and the first cylindrical body 31, respectively, ensuring smooth angle adjustment and structural stability. The insulating protective sleeve employing this structure can withstand multiple angle adjustment cycles without structural damage and maintains good protective performance.

[0050] Example 2:

[0051] The difference between this embodiment 2 and embodiment 1 is that the first body 4 and the terminal side connection part 3 are connected by a snap-fit, and the second body 1 and the cable side connection part 2 are connected by a snap-fit.

[0052] Specifically, in combination Figure 1 and Figure 4 As shown, in this embodiment 2, a snap-fit ​​protrusion is provided at one end of the first sleeve 4, which is made of ABS material to provide good rigidity and wear resistance. A snap-fit ​​groove 35 is provided at the corresponding position of the terminal-side connecting part 3, and its size matches the snap-fit ​​protrusion. Similarly, a snap-fit ​​protrusion of the same specification is provided at one end of the second sleeve 1, and a snap-fit ​​groove 35 of the same specification is provided at the corresponding position of the cable-side connecting part 2. In use, the first sleeve 4 is aligned with the terminal-side connecting part 3 and pressed together; similarly, the second sleeve 1 is aligned with the cable-side connecting part 2 and pressed together. At this time, the snap-fit ​​protrusion will be embedded in the snap-fit ​​groove 35, thereby connecting the first sleeve 4 and the second sleeve 1 to the angle adjustment mechanism respectively.

[0053] The installation process of the insulating protective sleeve in this embodiment 2 is as follows:

[0054] During installation, first install the angle adjustment mechanism to the connection position according to the method in Example 1, ensuring that the mounting shaft 23 and the mounting hole 34 fit well. Then, align the snap-fit ​​protrusion of the first sleeve 4 with the snap-fit ​​groove 35 of the terminal-side connection part 3, apply a certain force to press it, so that the snap-fit ​​protrusion fully enters the snap-fit ​​groove 35, achieving a stable connection between the first sleeve 4 and the terminal-side connection part 3. Next, connect the second sleeve 1 to the cable-side connection part 2 in the same way through the snap-fit ​​structure to complete the installation.

[0055] The above connection method facilitates quick disassembly when maintenance is required, and will not damage the components during disassembly. Furthermore, since the first set 4 and the second set 1 are detachable, they can be used to protect different specifications of terminal blocks 5. When in use, only the first set 4 and the second set 1 that are compatible with the terminal blocks 5 need to be replaced, which can reduce manufacturing difficulty.

[0056] In addition, the structure, material and performance of other components in this embodiment 2 are consistent with those in embodiment 1 to ensure the performance stability and consistency of the overall insulating protective sleeve.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An insulating protective sleeve for terminal blocks, used to protect the connection point between the terminal block and the lead cable, characterized in that, The insulating protective sleeve includes a first sleeve body and an angle adjustment mechanism. The first sleeve body is sleeved on the terminal block, and the angle adjustment mechanism is sleeved on the connection position between the terminal block and the lead cable. The angle adjustment mechanism includes a terminal-side connection part and a cable-side connection part; The terminal-side connection portion is provided with a hollow first cylindrical body. One end of the first cylindrical body is provided with a plurality of arc-shaped extensions. The connection position between the first cylindrical body and the extensions is provided with mounting holes, which penetrate radially through the first cylindrical body. One side of the extension is connected to the side surface of the first cylindrical body, and the other side of the extension extends in a direction away from the first cylindrical body. The other side of the extension encloses and forms an installation space for the cable-side connection portion to extend into. The cable-side connection portion is provided with a hollow second cylindrical body. The second cylindrical body has a first end near the terminal-side connection portion and a second end away from the terminal-side connection portion. The first end is provided with a connecting ear symmetrically arranged along the axis of the second cylindrical body, and the connecting ear is provided with a mounting shaft perpendicular to the axis of the second cylindrical body. The mounting shaft is connected to the mounting hole.

2. The insulating protective sleeve for wiring terminals according to claim 1, characterized in that, The extension body includes two first extension bodies and two second extension bodies arranged symmetrically along the axis of the first cylindrical main body, with a first gap between the first extension bodies and the second extension bodies on the same side; a cover plate receiving groove is provided on the side of the first cylindrical main body located between the two first extension bodies.

3. The insulating protective sleeve for wiring terminals according to claim 2, characterized in that, The outer surface of the second cylindrical body is fixedly connected to a cover plate made of flexible material, and the cover plate extends into the cover plate receiving groove.

4. The insulating protective sleeve for wiring terminals according to claim 3, characterized in that, The two first extensions are provided with arc-shaped limiting devices on their opposite sides, which are used to restrict the movement of the baffle along the edge of the first extension.

5. The insulating protective sleeve for wiring terminals according to claim 1, characterized in that, Both the terminal-side connection and the cable-side connection are provided with a first slit, which is used to allow the angle adjustment mechanism to be opened to a certain angle.

6. The insulating protective sleeve for wiring terminals according to claim 2, characterized in that, The second extension has at least one second slit, which provides deformation space for the second extension.

7. The insulating protective sleeve for wiring terminals according to claim 6, characterized in that, The first cylindrical body has at least one third slit near the second extension, the third slit being used to provide deformation space to the compressed first cylindrical body.

8. The insulating protective sleeve for wiring terminals according to claim 1, characterized in that, The insulating protective sleeve also includes a second sleeve body, which is sleeved on the drain cable and is fixedly connected to the cable side connection part.

9. The insulating protective sleeve for wiring terminals according to claim 8, characterized in that, The first sleeve body and the terminal side connection part are integrally molded and connected; the second sleeve body and the cable side connection part are integrally molded and connected.

10. The insulating protective sleeve for wiring terminals according to claim 8, characterized in that, The first sleeve is connected to the terminal side connection part by a snap-fit ​​connection; the second sleeve is connected to the cable side connection part by a snap-fit ​​connection.

Images