Wire connector and use method thereof

Abstract

The invention discloses a wire connector and a using method thereof, and relates to the technical field of low-voltage power distribution, and the wire connector comprises an insulating protective shell, a first wire is inserted into the opening end of one side of the insulating protective shell, and the end, located in the insulating protective shell, of the first wire is connected with a sawtooth conductive plate; a second wire is inserted into the opening end of the other side of the insulating protective shell, one end of the second wire abuts against the upper portion of the sawtooth conductive plate, and the insulating protective shell is further in threaded connection with a bolt used for pressing the second wire against the sawtooth conductive plate. And the bolt moves towards the direction in which the second wire is pressed on the sawtooth conductive plate, so that the sawtooth conductive plate punctures an insulating layer at the end part of the second wire, the sawtooth conductive plate is connected with a metal wire in the second wire, and the connection of the first wire and the second wire is quickly completed.

Description

Technical Field

[0001] This invention relates to the field of low-voltage power distribution technology, specifically to a wire connector and its usage method. Background Technology

[0002] In the field of electrical equipment, the connection between wires can generally be made using connectors (such as terminal blocks, WAGO clamps). For example, a piercing connection terminal disclosed in CN213660642U includes a terminal cover, an upper piercing component, a lower piercing component, and a terminal bottom cover. After the terminal cover and the terminal bottom cover are fixed, the upper piercing component and the lower piercing component are sealed and pressed together. By piercing the insulation layer of the first wire and the second wire by the upper piercing component and the lower piercing component, the first wire and the second wire can be made conductive.

[0003] Although the technical solutions disclosed in the above documents can achieve the connection of two wires, the following problems still exist in the process of use: First, there are multiple connection points such as between the piercing part and the wire, between the piercing connecting piece and the elastic buckle, and between the upper cover and the lower cover. The failure of any connection point will lead to the overall functional failure, and the failure probability increases synchronously with the number of connection points; Second, the structure is complex, and the installation and disassembly steps are cumbersome. Summary of the Invention

[0004] This invention provides a wire connector to enable quick connection between two wires.

[0005] The present invention provides the following technical solution: a wire connector, comprising an insulating protective shell, wherein a first wire is inserted into an open end on one side of the insulating protective shell, and one end of the first wire located inside the insulating protective shell is connected to a serrated conductive plate; a second wire is inserted into an open end on the other side of the insulating protective shell, and one end of the second wire abuts against the top of the serrated conductive plate; and a bolt for pressing the second wire against the serrated conductive plate is also threaded onto the insulating protective shell.

[0006] As a further improvement of the present invention, the head of the bolt is detachably connected to the screw.

[0007] As a further improvement of the present invention, the insulating protective shell is provided with a silicone sleeve at the outlet end of the second conductor, and the insulating protective shell is provided with a silicone cap at the inlet end of the bolt, and the silicone sleeve and the silicone cap are connected by a silicone strip.

[0008] As a further improvement of the present invention, the sawtooth conductive plate includes a straight rod segment fixed to the end of the first conductor and a strip plate fixed to the other end of the straight rod segment. The cross-section of the straight rod segment is rectangular. The strip plate is fixed at one side edge of the straight rod segment. The strip plate has two toothed plates arranged perpendicular to the surface of the strip plate along its length direction. The end of the strip plate away from the straight rod segment is bent at 90° in the direction away from the toothed plates to form a backstop.

[0009] As a further improvement of the present invention, a terminal sleeve is provided inside the insulating protective shell. The terminal sleeve is an annular frame with openings on both sides. One side of the annular frame is opened for the insertion of a first wire, and the other side is opened for the insertion of a second wire. One side frame of the annular frame is provided with a recess for placing a strip plate, and a threaded hole for bolt insertion is provided on the side frame opposite the recess.

[0010] As a further improvement of the present invention, the insulating protective shell is a split structure, including a first insulating shell half and a second insulating shell half. The inner walls of the first insulating shell half and the second insulating shell half are provided with U-shaped support plates for supporting the straight rod section. The inner walls of the first insulating shell half and the second insulating shell half are also provided with mounting grooves for installing terminal sleeves.

[0011] As a further improvement of the present invention, the first insulating shell half and the second insulating shell half are provided with an outwardly extending convex ring half at the inlet end of the bolt, and the outer ring contour of the convex ring half is adapted to the inner ring contour of the silicone cap.

[0012] The present invention also discloses a method for using a wire connector, applicable to the aforementioned wire connector, comprising the following steps:

[0013] Insert the serrated conductive plate of the first conductor into the insulating protective shell through an opening on one side.

[0014] Insert one end of the second wire into the insulating protective shell from the opening on the other side, so that one end of the second wire abuts against the serrated conductive plate.

[0015] Tighten the bolts, which press the second conductor against the serrated conductive plate, causing the serrated conductive plate to pierce the insulation layer of the second conductor and come into contact with the metal wire inside the second conductor.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this invention, the insulating protective shell not only provides hardware support for the connection between the first conductor and the second conductor, but also provides electrical insulation for the connection between the first conductor and the second conductor. At the same time, by tightening the bolts on the insulating protective shell, the bolts are moved in the direction of pressing the second conductor onto the serrated conductive plate, so that the serrated conductive plate pierces the insulation layer at the end of the second conductor, and the serrated conductive plate connects with the metal wire inside the second conductor, thus completing the connection between the first conductor and the second conductor.

[0018] 2. In this invention, the bolt head and shank are designed to be separate. When the head breaks, the shank remains completely inside the insulating protective shell. This avoids electric shock caused by the bolt head protruding from the shell and also reduces the size and material usage of the insulating protective shell, as no protective structure is needed to cover the bolt head. Furthermore, when the bolt head breaks under torque, it provides positive feedback to the installer, demonstrating ergonomics and efficient wire connection during construction.

[0019] 3. In this invention, the straight rod segment with a rectangular cross-section facilitates the positioning and state of the first conductor. The straight rod segment located inside the insulating protective shell will not rotate under the support of the U-shaped support plate, thus facilitating the alignment of the toothed plate with the second conductor. Two toothed plates are arranged at intervals on the strip plate. On the one hand, the two toothed plates ensure that the insulation layer of the second conductor is pierced. On the other hand, the distance between the two toothed plates also serves to position the second conductor, so that the second conductor is stably attached to the strip plate and the toothed plate under the pressure of the bolt. Attached Figure Description

[0020] Figure 1 , 2 This is a schematic diagram of the assembly of the wire connector in this invention.

[0021] Figure 3 , 4 This is a cross-sectional structural diagram of the wire connector in this invention.

[0022] Figure 5 This is a schematic diagram of the serrated conductive plate in this invention.

[0023] Figure 6 This is a schematic diagram of the structure of the terminal sleeve in this invention.

[0024] Figure 7 , 8 This is a schematic diagram of the internal structure of the first insulating shell half and the second insulating shell half in this invention.

[0025] Figure 9 This is a schematic diagram of the bolt structure.

[0026] Figure 10 ,11 This is a physical image of the wire connector in this invention.

[0027] In the diagram: 10. Insulating protective shell; 11. First insulating shell half; 12. Second insulating shell half; 13. U-shaped support plate; 14. Mounting groove; 15. Convex ring half; 20. First conductor; 21. Serrated conductive plate; 30. Second conductor; 40. Bolt; 41. Head; 42. Screw; 51. Silicone sleeve; 52. Silicone cap; 53. Silicone strip; 211. Straight rod section; 212. Strip plate; 213. Toothed plate; 214. Anti-reverse part; 60. Terminal sleeve; 61. Recess; 62. Threaded hole. Detailed Implementation

[0028] The technical solutions of the embodiments of this specification will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this specification and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this specification.

[0029] In the description of this application, terms such as "front," "rear," "inner," "outer," "upper," "lower," "left," and "right" are used only to indicate orientation or positional relationship for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0030] Example 1

[0031] Please see Figures 1-9 As shown, a wire connector includes an insulating protective shell 10. A first wire 20 is inserted into an open end on one side of the insulating protective shell 10, and one end of the first wire 20 inside the insulating protective shell 10 is connected to a serrated conductive plate 21. A second wire 30 is inserted into an open end on the other side of the insulating protective shell 10, and one end of the second wire 30 abuts against the top of the serrated conductive plate 21. A bolt 40 for pressing the second wire 30 against the serrated conductive plate 21 is also threaded onto the insulating protective shell 10.

[0032] In the above scheme, the insulating protective shell 10 not only provides hardware support for the connection between the first conductor 20 and the second conductor 30, but also provides electrical insulation for the connection part of the first conductor 20 and the second conductor 30. At the same time, by tightening the bolt 40 on the insulating protective shell 10, the bolt 40 is moved in the direction of pressing the second conductor 30 onto the serrated conductive plate 21, so that the serrated conductive plate 21 pierces the insulation layer at the end of the second conductor 30, and the serrated conductive plate 21 connects with the metal wire inside the second conductor 30, thus completing the connection between the first conductor 20 and the second conductor 30.

[0033] like Figure 9 As shown, further, the head 41 of the bolt 40 is detachably connected to the screw 42; the connection between the head 41 of the bolt 40 and the screw 42 can be achieved by neck scoring, that is, by machining an annular score on the upper end of the screw 42 to form a weakening groove. The depth, width and radius of the score determine the breaking torque. The deeper the score, the smaller the breaking torque. Alternatively, it can be connected by adhesive bonding. It is agreed that the head 41 can only be broken and separated from the screw 42 when the torque is ≥8 (N·m), and the breaking torque must be within 9 (N·m).

[0034] This design ensures that when the torque reaches 8 N·m, the head 41 of the bolt 40 separates from the screw 42, leaving the screw 42 completely inside the insulating protective shell 10. This prevents electric shock due to the bolt head 41 protruding from the shell, and also reduces the size and material requirements of the shell 10 by eliminating the need for a protective structure to cover the bolt head 41. Furthermore, when the bolt head 41 breaks under torque, it provides positive feedback to the installer, demonstrating ergonomics and efficient wire connection during installation.

[0035] like Figure 1 , 2 As shown in Figures 3 and 4, in order to prevent the broken screw 42 from being exposed to the outside air, a corresponding protective structure is designed: the insulating protective shell 10 is provided with a silicone sleeve 51 at the outlet end of the second conductor 30, and the insulating protective shell 10 is provided with a silicone cover 52 at the inlet end of the bolt 40, and the silicone sleeve 51 and the silicone cover 52 are connected by a silicone strip 53.

[0036] like Figure 5As shown above, the sawtooth conductive plate 21 includes a straight rod segment 211 fixed to one end of the first conductor 20 and a strip plate 212 fixed to the other end of the straight rod segment 211. The straight rod segment 211 has a rectangular cross-section. The strip plate 212 is fixed to one side edge of the straight rod segment 211. The strip plate 212 has two toothed plates 213 arranged perpendicular to its surface along its length. The end of the strip plate 212 away from the straight rod segment 211 is bent 90° away from the toothed plates 213 to form a stop portion 214. The sawtooth conductive plate 21 and the first conductor 20 are connected by a crimping process, so that the first conductor 20 and the sawtooth conductive plate 21 are seamlessly connected, increasing the current carrying capacity between the first conductor 20 and the sawtooth conductive plate 21. The straight rod segment 211 with a rectangular cross-section facilitates the positioning and state of the first conductor 20, that is, the first conductor 20 is positioned... After the conductor 20 is placed into the insulating protective shell 10, the rectangular cross-section straight rod section 211 prevents the first conductor 20 from rotating, while facilitating the alignment of the toothed plate 213 with the second conductor 30. Two toothed plates 213 are spaced apart on the strip plate 212. On the one hand, the two toothed plates 213 ensure that the insulation layer of the second conductor 30 is pierced. On the other hand, the distance between the two toothed plates 213 also serves to position the second conductor 30, so that the second conductor 30 is stably pressed against the strip plate 212 and the toothed plate 213 under the pressure of the bolt 40. After the teeth of the toothed plate 213 are inserted into the second conductor 30, the pressing of the bolt 40 can also fix the second conductor 30, preventing the second conductor 30 from detaching from the insulating protective shell 10. The anti-retraction part 214 is set to cooperate with the terminal sleeve 60, so that the first conductor 20 will not come out of the insulating protective shell 10.

[0037] The connection method between the serrated conductive plate 21 and the first conductor 20 is as follows: the insulation layer at one end of the first conductor 20 is stripped off, so that the metal wire at that end is exposed. Copper sheet is used to wrap the outside of the metal wire, and the outer periphery of the wrapped section of the metal wire is rectangular. The rectangular wrapped section is the straight rod section 211. The remaining part of the copper sheet forms the strip plate 212 and the toothed plate 213 in sequence.

[0038] like Figure 6 As shown, to facilitate the positioning of the strip plate 212, a terminal sleeve 60 is provided inside the insulating protective shell 10. The terminal sleeve 60 is an annular frame with openings on both sides. One side of the annular frame is opened for the insertion of the first wire 20, and the other side is opened for the insertion of the second wire 30. One side of the annular frame is provided with a recess 61 for placing the strip plate 212, and a threaded hole 62 for the bolt 40 to enter is provided on the side side opposite the recess 61. In use, the strip plate 212 is embedded in the recess 61, and the anti-retraction part 214 at one end of the strip plate 212 is in contact with the outer frame wall of the annular frame, thereby preventing the first wire 20 from retracting from the insulating protective shell 10.

[0039] like Figure 7 , 8 As shown, to facilitate the insertion of the first conductor 20 and the second conductor 30 into the insulating protective shell 10, the insulating protective shell 10 has a split structure, including a first insulating shell half 11 and a second insulating shell half 12. The inner walls of both the first insulating shell half 11 and the second insulating shell half 12 are provided with U-shaped support plates 13 for supporting the straight rod section 211. The inner walls of both the first insulating shell half 11 and the second insulating shell half 12 are also provided with mounting grooves 14 for installing the terminal sleeve 60. The U-shaped support plates 13 support the outer side of the straight rod section 211, thereby determining the position of the sawtooth conductive plate 21. When the first conductor 20, the second conductor 30, and the terminal sleeve 60 are all installed inside the insulating protective shell 10, the first insulating shell half 11 and the second insulating shell half 12 are welded together using ultrasonic welding, forming a sealed and non-removable insulating protective shell 10.

[0040] like Figure 7 , 8 As shown, to facilitate the sealing of the silicone cap 52 at the inlet end of the bolt 40, the first insulating shell half 11 and the second insulating shell half 12 are provided with an outwardly extending convex ring half 15 at the inlet end of the bolt 40. The outer contour of the convex ring half 15 is adapted to the inner contour of the silicone cap 52. In addition, the silicone cap 52 can also be welded to the convex ring half 15 using an ultrasonic process to further fix the silicone cap 52.

[0041] The wire connector provided in this application can be used in low-voltage power distribution. It is commonly used for external terminals of meter boxes or leads in distribution cabinets.

[0042] Example 2

[0043] A method of using a wire connector, applicable to the wire connector in Embodiment 1, includes the following steps:

[0044] S1. Insert the serrated conductive plate 21 of the first conductor 20 into the insulating protective shell (10) from one side opening of the insulating protective shell 10.

[0045] S2. Insert one end of the second wire 30 into the insulating protective shell 10 from the opening on the other side of the insulating protective shell 10, and make one end of the second wire 30 abut against the serrated conductive plate 21.

[0046] S3. Tighten bolt 40. Bolt 40 presses the second conductor 30 onto the serrated conductive plate 21, causing the serrated conductive plate 21 to pierce the insulation layer of the second conductor 30 and come into contact with the metal wire inside the second conductor 30.

[0047] Furthermore, when all components of the wire connector are in a separate state, the specific usage method includes the following steps:

[0048] S1. Insert one end of the serrated conductive plate 21 of the first conductor 20 into the terminal sleeve 60, and make the strip plate 212 embedded in the recess 61, and then screw the screw 42 of the bolt 40 into the threaded hole 62.

[0049] S2. Install the terminal sleeve 60 containing the first wire 20 into the mounting groove 14 inside the first insulating shell half 11;

[0050] S3. Connect the second insulating shell half 12 to the first insulating shell half 11, and weld the second insulating shell half 12 to the first insulating shell half 11 into a whole.

[0051] S4. Weld the silicone sleeve 51 to the inlet end of the second conductor 30 of the insulating protective shell 10.

[0052] S5. Insert one end of the second wire 30 into the insulating protective shell 10, and place one end of the second wire 30 on the two toothed plates 213.

[0053] S6. Apply a torque of 8 N·m to 9 N·m to the bolt 40, causing the head 41 of the bolt 40 to break and separate from the screw 42, with the screw 42 located inside the insulating protective shell 10.

[0054] S7. Place the silicone cap 52 around the outer edge of the convex ring formed by the two convex ring halves 15.

[0055] In the above examples, the welding process is ultrasonic welding.

[0056] The embodiments described above are merely preferred embodiments of this specification and are not intended to limit the scope of this specification. Any modifications and improvements made by those skilled in the art to the technical solutions of this specification without departing from the spirit of this specification should fall within the protection scope defined by the claims of this specification.

Claims

1. A wire connector, characterized in that, The device includes an insulating protective shell (10), with a first wire (20) inserted into one open end of the insulating protective shell (10), and one end of the first wire (20) inside the insulating protective shell (10) connected to a serrated conductive plate (21). A second wire (30) is inserted into the other open end of the insulating protective shell (10), and one end of the second wire (30) abuts against the top of the serrated conductive plate (21). The insulating protective shell (10) is also threaded with a bolt (40) for pressing the second wire (30) against the serrated conductive plate (21).

2. The wire connector according to claim 1, characterized in that, The head (41) of the bolt (40) is detachably connected to the screw (42).

3. The wire connector according to claim 1 or 2, characterized in that, The insulating protective shell (10) is provided with a silicone sleeve (51) at the outlet end of the second conductor (30), and a silicone cover (52) is provided at the inlet end of the bolt (40), and the silicone sleeve (51) and the silicone cover (52) are connected by a silicone strip (53).

4. The wire connector according to claim 1 or 2, characterized in that, The sawtooth conductive plate (21) includes a straight rod segment (211) fixed to the end of the first conductor (20) and a strip plate (212) fixed to the other end of the straight rod segment (211). The straight rod segment (211) has a rectangular cross-section. The strip plate (212) is fixed to one side edge of the straight rod segment (211). The strip plate (212) has two toothed plates (213) arranged perpendicular to the surface of the strip plate (212) along its length direction. The end of the strip plate (212) away from the straight rod segment (211) is bent 90° away from the toothed plate (213) and forms a backstop (214).

5. The wire connector according to claim 4, characterized in that, The insulating protective shell (10) is provided with a terminal sleeve (60). The terminal sleeve (60) is an annular frame with openings on both sides. One side of the annular frame is opened for the insertion of the first wire (20), and the other side is opened for the insertion of the second wire (30). One side of the annular frame is provided with a recess (61) for placing a strip plate (212). A threaded hole (62) for a bolt (40) is provided on the side frame opposite the recess (61).

6. The wire connector according to claim 5, characterized in that, The insulating protective shell (10) is a split structure, including a first insulating shell half (11) and a second insulating shell half (12). The inner walls of the first insulating shell half (11) and the second insulating shell half (12) are provided with U-shaped support plates (13) for supporting the straight rod section (211). The inner walls of the first insulating shell half (11) and the second insulating shell half (12) are also provided with mounting grooves (14) for installing the terminal sleeve (60).

7. The wire connector according to claim 6, characterized in that, The first insulating shell half (11) and the second insulating shell half (12) are provided with an outwardly protruding convex ring half (15) at the inlet end of the bolt (40), and the outer ring contour of the convex ring half (15) is adapted to the inner ring contour of the silicone cap (52).

8. A method of using a wire connector, applicable to the wire connector according to any one of claims 1-7, characterized in that, The following usage steps are included: Insert the serrated conductive plate (21) of the first conductor (20) into the insulating protective shell (10) from one side opening; Insert one end of the second wire (30) into the insulating protective shell (10) through the opening on the other side, and make one end of the second wire (30) abut against the sawtooth conductive plate (21); Tighten the bolt (40), and the bolt (40) presses the second conductor (30) onto the serrated conductive plate (21), so that the serrated conductive plate (21) pierces the insulation layer of the second conductor (30) and comes into contact with the metal wire inside the second conductor (30).

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