A locking cable accessory terminal

Abstract

The application discloses an anti-loose cable accessory wiring terminal, which comprises a plate part and a pipe part connected with the plate part, the plate part is provided with a plate hole, and the pipe part is internally provided with a pipe inner hole; the plate part is provided with an anti-loose device; the plate part is internally provided with a semi-closed channel perpendicular to the plate surface of the plate part, an internal channel perpendicular to the semi-closed channel, and a hollow channel parallel to the semi-closed channel, the closed end of the semi-closed channel is communicated with one end of the internal channel, and the other end of the internal channel is communicated with the hollow channel; the anti-loose device comprises a first push rod arranged in the semi-closed channel, a first spring arranged at the closed end of the semi-closed channel, a first steel ball arranged at the channel opening of the semi-closed channel and smaller in diameter than the channel opening, a second push rod arranged in the internal channel, a third push rod and a fourth push rod arranged in the hollow channel, a second spring arranged between the third push rod and the fourth push rod, a second steel ball and a third steel ball respectively arranged at two channel openings of the hollow channel and smaller in diameter than the channel openings.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrical equipment, and particularly relates to a loosening-preventing cable accessory wiring terminal. BACKGROUND

[0002] The wiring terminal is a power fitting for connecting cables and equipment terminals to continuously conduct power in a power system, and is widely used in power transmission and distribution networks. The existing terminal structure comprises a plate part and a pipe part, the plate part is clamped between the sleeve and the connecting rod, the pipe part is internally provided with a pipe hole, and the conductor is connected in the pipe hole. Because the wiring terminal and the equipment sleeve both have resistance, when the line load is large, the wiring terminal connection part will heat up, the screw will oxidize, and in addition to thermal expansion and cold contraction, the connection part will deform, the screw will loosen, the cable and the sleeve connection will loosen and be not firm, thereby increasing the loop resistance value, causing heating and even causing a fire, and forming an accident hazard. SUMMARY

[0003] The present application aims to overcome the deficiencies of the prior art, and provides a loosening-preventing cable accessory wiring terminal.

[0004] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows:

[0005] The anti-loosening cable accessory terminal includes a plate (1) and a tube (2) connected to the plate (1). The plate (1) has a plate hole (3), and the tube (2) has an inner hole (4). The plate (1) is provided with an anti-loosening device. The plate (1) has a semi-enclosed channel (5) perpendicular to the plate surface, an internal channel (6) perpendicular to the semi-enclosed channel (5), and a hollow channel (7) parallel to the semi-enclosed channel (5). The closed end of the semi-enclosed channel (5) is connected to one end of the internal channel (6), and the other end of the internal channel (6) is connected to the hollow channel (7). The anti-loosening device includes a... The first push rod (8) is located in the semi-enclosed channel (5), a first spring (9) is located at the closed end of the semi-enclosed channel (5), a first steel ball (10) is located at the channel opening of the semi-enclosed channel (5) and has a diameter smaller than the channel opening diameter, a second push rod (11) is located in the inner channel (6), a third push rod (12) and a fourth push rod (13) are located in the hollow channel (7), a second spring (14) is located between the third push rod (12) and the fourth push rod (13), and a second steel ball (15) and a third steel ball (16) are located at the two channel openings of the hollow channel (7) and have a diameter smaller than the channel opening diameter, respectively; the first steel ball (18) is located in the inner channel (6), a first spring (9) is located at the closed end of the semi-enclosed channel (5), a first steel ball (10) is located at the channel opening of the semi-enclosed channel (5) and has a diameter smaller than the channel opening diameter, a first steel ball (10) is located at the channel opening of the semi-enclosed channel (5), ... 0) Connected to one end face of the first push rod (8), the other end face of the first push rod (8) is connected to the first spring (9); the second steel ball (15) is connected to one end face of the third push rod (12), the other end face of the third push rod (12) is connected to one end face of the fourth push rod (13) through the second spring (14), the other end face of the fourth push rod (13) is connected to the third steel ball (16); when the first spring (9) and the second spring (14) are in a non-loaded state, the edge of one end face of the second push rod (11) is connected to the edge of the end face of the first push rod (8), the first steel ball (10) protrudes from the channel opening, and the second steel ball (15) The first push rod (8) and the second push rod (11) are in the channel opening. The edge of the other end face of the second push rod (11) is connected to the edge of the end face of the third push rod (12) and the edge of the end face of the fourth push rod (13). The connection points of the end face edges of the first push rod (8) and the second push rod (11), the second push rod (11) and the third push rod (12), and the second push rod (11) and the fourth push rod (13) are all inclined surfaces (17). When the first spring (9) and the second spring (14) are under load, the first steel ball (10) is in the channel opening, and the second steel ball (15) and the third steel ball (16) are exposed in the channel opening.

[0006] Preferably, the anti-loosening device is positioned above the plate hole (3).

[0007] Preferably, the first spring (9) is a compression spring and the second spring (14) is a tension spring.

[0008] Preferably, the inclined plane is a 45° inclined plane.

[0009] The present invention will be further described below:

[0010] The application scenarios of the cable accessory terminal block described in this invention are as follows: Figure 4 As shown, one end of the cable accessory sleeve is fitted onto the wall sleeve (18). The cable accessory includes a front connector (19) and a rear connector (20). Cable accessory terminals are inserted into both the front connector (19) and the rear connector (20). The plate holes of the cable accessory terminal plate are passed through by bolts (21). One side of the plate of the terminal in the front connector (19) abuts against the end face of the wall sleeve (18) and the other side abuts against the end face of the connecting rod (22). One side of the plate of the terminal in the rear connector (20) abuts against the end face of the connecting rod (22) and the other side abuts against the flat washer (23) fastened to the bolt (21) by a nut (24). This invention incorporates an anti-loosening device on the plate of the cable accessory terminal block. When the plate is pressed down by components on both sides, the first steel ball receives pressure and is pushed into the opening of the semi-enclosed channel. The first steel ball provides thrust to the first push rod, causing the first push rod to move horizontally towards the closed end of the semi-enclosed channel and compress the first spring. Simultaneously, due to the horizontal movement of the first push rod, the edge of the first push rod's end face and the edge of the second push rod's end face are relatively displaced, pushing the second push rod to move vertically upward. Furthermore, due to the vertical movement of the second push rod, the edge of the second push rod's end face and the edges of the third and fourth push rods are relatively displaced, pushing the third and fourth push rods to move horizontally towards the two openings of the hollow channel, thereby exposing the second and third steel balls to the channel openings. At this time, the second spring is in a stretched state, and the second and third steel balls abut against the end faces on both sides of the plate (effectively increasing the frictional resistance between the terminal and the component in contact with the terminal, preventing relative displacement between the terminal and the component in contact with the terminal), forming a secure and tight connection to prevent the cable accessory from loosening. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0013] Figure 3 This is a schematic diagram of the anti-loosening device in the terminal block of the anti-loosening cable accessory according to the present invention;

[0014] Figure 4 This describes the application scenario of the cable accessory terminal block described in this invention.

[0015] In the diagram: 1. Plate section; 2. Tube section; 3. Plate hole; 4. Tube inner hole; 5. Semi-enclosed channel; 6. Internal channel; 7. Hollow channel; 8. First push rod; 9. First spring; 10. First steel ball; 11. Second push rod; 12. Third push rod; 13. Fourth push rod; 14. Second spring; 15. Second steel ball; 16. Third steel ball; 17. Inclined surface; 18. Through-wall sleeve; 19. Front connector; 20. Rear connector; 21. Bolt; 22. Connecting rod; 23. Flat washer; 24. Nut. Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0017] See Figures 1 to 3The anti-loosening cable accessory terminal includes a plate portion 1 and a tube portion 2 connected to the plate portion 1. The plate portion 1 has a plate hole 3, and the tube portion 2 has an inner tube hole 4. The plate portion 1 is provided with an anti-loosening device. The plate portion 1 has a semi-enclosed channel 5 perpendicular to the plate surface, an internal channel 6 perpendicular to the semi-enclosed channel 5, and a hollow channel 7 parallel to the semi-enclosed channel 5. The closed end of the semi-enclosed channel 5 is connected to one end of the internal channel 6, and the other end of the internal channel 6 is connected to the hollow channel 7. The anti-loosening device includes a terminal block provided in the semi-enclosed channel 1. The system includes: a first push rod 8 within the enclosed channel 5; a first spring 9 located at the closed end of the semi-enclosed channel 5; a first steel ball 10 located at the channel opening of the semi-enclosed channel 5 with a diameter smaller than the channel opening diameter; a second push rod 11 within the internal channel 6; a third push rod 12 and a fourth push rod 13 within the hollow channel 7; a second spring 14 located between the third push rod 12 and the fourth push rod 13; and second steel balls 15 and third steel balls 16 located at the two channel openings of the hollow channel 7 with diameters smaller than the channel opening diameter. The first steel ball 10 and the... One end face of the push rod 8 is connected to the first spring 9; the other end face of the push rod 8 is connected to the first spring 9; the second steel ball 15 is connected to one end face of the third push rod 12, and the other end face of the third push rod 12 is connected to one end face of the fourth push rod 13 via the second spring 14, and the other end face of the fourth push rod 13 is connected to the third steel ball 16; when the first spring 9 and the second spring 14 are in a non-loaded state, the edge of one end face of the second push rod 11 is connected to the edge of the end face of the first push rod 8, the first steel ball 10 is exposed at the channel opening, and the second steel ball 15 and The third steel ball 16 is inside the channel opening. The edge of the other end face of the second push rod 11 is simultaneously connected to the edge of the end face of the third push rod 12 and the edge of the end face of the fourth push rod 13. The connection points of the end face edges of the first push rod 8 and the second push rod 11, the second push rod 11 and the third push rod 12, and the second push rod 11 and the fourth push rod 13 are all inclined surfaces 17. When the first spring 9 and the second spring 14 are under load, the first steel ball 10 is inside the channel opening, and the second steel ball 15 and the third steel ball 16 are exposed outside the channel opening.

[0018] The anti-loosening device is positioned above the plate hole 3. The first spring 9 is a compression spring, and the second spring 14 is a tension spring. The inclined plane is a 45° inclined plane.

Claims

1. A terminal block for anti-loosening cable accessories, the terminal block comprising a plate portion (1) and a tube portion (2) connected to the plate portion (1), the plate portion (1) having a plate hole (3), and the tube portion (2) having an inner hole (4); characterized in that, The plate (1) is provided with an anti-loosening device; the plate (1) is provided with a semi-enclosed channel (5) perpendicular to the plate surface, an internal channel (6) perpendicular to the semi-enclosed channel (5), and a hollow channel (7) parallel to the semi-enclosed channel (5). The closed end of the semi-enclosed channel (5) is connected to one end of the internal channel (6), and the other end of the internal channel (6) is connected to the hollow channel (7); the anti-loosening device includes a first push rod (8) provided in the semi-enclosed channel (5), a first spring (9) provided at the closed end of the semi-enclosed channel (5), and a spring (9) provided at the semi-enclosed channel (5). The structure includes a first steel ball (10) at the opening of the channel (5) with a diameter smaller than the opening diameter, a second push rod (11) inside the internal channel (6), a third push rod (12) and a fourth push rod (13) inside the hollow channel (7), a second spring (14) between the third push rod (12) and the fourth push rod (13), and a second steel ball (15) and a third steel ball (16) at the two openings of the hollow channel (7) with a diameter smaller than the opening diameter; the first steel ball (10) is connected to one end face of the first push rod (8), and the other end face of the first push rod (8) is connected to the first... Spring (9) is connected; the second steel ball (15) is connected to one end face of the third push rod (12), and the other end face of the third push rod (12) is connected to one end face of the fourth push rod (13) through the second spring (14), and the other end face of the fourth push rod (13) is connected to the third steel ball (16); when the first spring (9) and the second spring (14) are in a non-loaded state, the edge of one end face of the second push rod (11) is connected to the edge of the end face of the first push rod (8), the first steel ball (10) protrudes from the channel opening, and the second steel ball (15) and the third steel ball (16) are inside the channel opening. The edge of the other end face of the second push rod (11) is connected to the edge of the end face of the third push rod (12) and the edge of the end face of the fourth push rod (13). The connection points of the end face edges of the first push rod (8) and the second push rod (11), the connection points of the end face edges of the second push rod (11) and the third push rod (12), and the connection points of the end face edges of the second push rod (11) and the fourth push rod (13) are all inclined surfaces (17). When the first spring (9) and the second spring (14) are under load, the first steel ball (10) is inside the channel opening, and the second steel ball (15) and the third steel ball (16) are exposed outside the channel opening.

2. The anti-loosening cable accessory terminal block as described in claim 1, characterized in that, The anti-loosening device is positioned above the plate hole (3).

3. The anti-loosening cable accessory terminal block as described in claim 1, characterized in that, The first spring (9) is a compression spring, and the second spring (14) is a tension spring.

4. The anti-loosening cable accessory terminal block as described in claim 1, characterized in that, The inclined plane is a 45° inclined plane.

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