Multi-core branch cable connector

Abstract

The utility model discloses a multi-core branch cable connector, an upper shell and a lower shell are assembled to form a complete shell, a main cable and a branch cable penetrating into the shell are fixedly connected through a fixing piece, and the fixing piece comprises a locking block, a first bolt, a second bolt, a sliding block and a pressing block. The locking block is provided with a clamping groove for clamping the main cable in the radial direction of the main cable, the clamping groove penetrates through the locking block relative to the axial direction of the main cable, the locking block is provided with a sliding groove for the sliding block to slide in, and the first bolt penetrates through the sliding block and is in threaded connection with the sliding block. The pressing plate fixes the main cable and the branch cable on the inner wall of the clamping groove in a jacking mode through the first bolt, the threaded end of the first bolt abuts against the pressing plate, the second bolt is arranged on the sliding block in a penetrating mode, the second bolt is in threaded connection with the pressing plate, and the sliding block is provided with a through groove for the second bolt to slide up and down. According to the multi-core branch cable connector, cable wiring connection is more stable, and the phenomena of loosening and heating are reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable wiring technology, and in particular to a multi-core branch cable connector. Background Technology

[0002] Cables are typically rope-like structures made up of several or groups of conductors twisted together. Each group of conductors is insulated from each other and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated. Cable joints need to be connected, which requires the use of cable connectors.

[0003] Currently, the branch cable connectors on the market simply involve inserting the main cable and branch cable into the corresponding holes of the branch cable connector, and then fixing them to the branch cable connector with their respective bolts.

[0004] However, the aforementioned branch cable connector has the following defects: during the process of fixing the main cable and the branch cable, the main cable and the branch cable are only tightened and fixed in the branch cable connector by the threaded end of the bolt. The main cable and the branch cable are not directly pressed together, but are electrically connected through the branch cable connector. At the same time, the threaded end of the bolt is tightened on the main cable and the branch cable. Since the main cable and the branch cable are multi-core cables, the cable cores are easily broken apart. Often, only a part of the cable cores are tightened and fixed, which can easily lead to overheating during later use and even cause safety hazards such as fire. Utility Model Content

[0005] To make cable connections more stable and reduce the occurrence of loosening and overheating, this application provides a multi-core branch cable connector.

[0006] The multi-core branch cable connector provided in this application adopts the following technical solution:

[0007] A multi-core branch cable connector includes an upper housing and a lower housing, which are fixed together by fasteners. The upper and lower housings, when assembled, form a complete housing. The housing has a main cable hole for the main cable to pass through, the main cable hole penetrating the housing. The housing also has branch cables to pass through. The main cable and branch cables, passing through the housing, are fixedly connected by fasteners, which include a locking block, a first bolt, a second bolt, a sliding block, and a clamping block. The locking block is positioned radially towards the main cable. A locking groove is provided for the main cable to be inserted. The locking groove passes through the locking block in the axial direction relative to the main cable. The locking block is provided with a sliding groove for a sliding block to slide into. The first bolt passes through the sliding block and is threadedly connected to the sliding block. The clamping block uses the first bolt to press and fix the main cable and branch cable to the inner wall of the locking groove. The threaded end of the first bolt is pressed against the clamping block. The second bolt passes through the sliding block and is threadedly connected to the clamping block. The sliding block is provided with a through groove for the second bolt to slide up and down.

[0008] Optionally, the locking block is covered with an insulating flame-retardant plastic sleeve.

[0009] Optionally, the sliding groove passes through the locking block in the axial direction relative to the main cable, and the insulating flame-retardant plastic sleeve is provided with a stop block to limit the sliding block, the stop block being located at the end of one side of the sliding groove.

[0010] Optionally, the threaded end of the first bolt is provided with a groove, the groove being circular and its center coinciding with the center of the first bolt.

[0011] Optionally, the insulating flame-retardant plastic sheath has arc-shaped extension sections at both ends relative to the axial direction of the main cable.

[0012] Optionally, the insulating flame-retardant plastic sheath has arc-shaped extension sections at both ends relative to the axial direction of the main cable.

[0013] Optionally, the upper housing is provided with a filling hole for injecting sealant into the interior, the filling hole is connected to the interior of the housing, and the upper housing is provided with a sealing cap to seal the filling hole.

[0014] Optionally, the lower housing has a sealing groove on one side relative to the upper housing, and a sealing strip is provided in the sealing groove.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This application discloses a multi-core branch cable connector. Through the cooperation of a clamping block, a first bolt, and a second bolt, the main cable and branch cable can be stably fastened within the locking block, allowing direct electrical connection between the main cable and branch cable. Simultaneously, the filling of the housing with adhesive improves the sealing performance and also positions the cable joints and fasteners, further enhancing the stability of the cable connector connection and reducing the occurrence of loosening and overheating. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment of this application.

[0018] Figure 2 This is a perspective view of an embodiment of this application with the upper shell removed.

[0019] Figure 3 This is a perspective view of the fastener in the embodiment of this application.

[0020] Figure 4 This is a perspective view of the other side of the fastener in the embodiment of this application.

[0021] Figure 5 This is a perspective view of the first bolt in the embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Upper housing; 2. Lower housing; 3. Main cable hole; 4. Branch cable hole; 5. Fixing component; 51. Locking block; 52. First bolt; 53. Second bolt; 54. Sliding block; 55. Pressing block; 6. Snap-in groove; 7. Sliding groove; 8. Through groove; 9. Insulating flame-retardant plastic sleeve; 10. Stop block; 11. Groove; 12. Glue-filling hole; 13. Sealing cap; 14. Sealing groove; 15. Sealing strip; 16. Threaded hole; 17. Main cable; 18. Branch cable; 19. Arc-shaped extension section; 20. Limiting block. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a multi-core branch cable 18 connector, including an upper housing 1 and a lower housing 2. The upper housing 1 and the lower housing 2 are fixed together by fasteners, namely bolts. The upper housing 1 and the lower housing 2 are assembled together to form a complete housing. The housing has a main wire hole 3 for the main cable 17 to pass through, and the main wire hole 3 penetrates the housing. The housing also has a branch wire hole 4 for the branch cable 18 to pass through. The main cable 17 and the branch cable 18 inserted into the housing are fixedly connected by a fixing member 5. The fixing member 5 includes a locking block 51, a first bolt 52, a second bolt 53, a sliding block 54, and a pressing block 55. The locking block 51 has a locking groove 6 in the radial direction of the main cable 17 for the main cable 17 to be inserted. The locking groove 6 penetrates the locking block 51 in the axial direction relative to the main cable 17. The locking block 51 is provided with a sliding groove 7 for the sliding block 54 to slide into. The first bolt 52 passes through the sliding block 54 and is threadedly connected to the sliding block 54. The sliding block 54 is provided with a corresponding threaded hole 16. The clamping block 55 uses the first bolt 52 to press and fix the main cable 17 and the branch cable 18 to the inner wall of the slot 6. The threaded end of the first bolt 52 presses against the clamping block 55. The second bolt 53 passes through the sliding block 54 and is threadedly connected to the clamping block 55. The clamping block 55 is provided with a corresponding through hole with internal thread (not shown in the figure). The sliding block 54 is provided with a through groove 8 for the second bolt 53 to slide up and down. The first bolt 52 is an internal hexagonal bolt and there are two of them. The second bolt 53 is provided and is located between the two first bolts 52.

[0025] The main cable 17 contains three main cable cores, and the branch cable 18 also contains three branch cable cores. The outer insulation layer of the main cable core is stripped to expose the conductor, and the outer insulation layer of the end of the branch cable core is also removed to expose the conductor. The main cable core and the branch cable core are fixed to each other one by one by the fixing member 5, and the main cable core and the branch cable core are electrically connected.

[0026] During the process of fixing the main cable core and the branch cable core by the fixing piece 5, it is only necessary to first slide the slider out of the sliding groove 7, and then insert the exposed conductor part of the main cable core after circumferential stripping into the locking block 51 from the insertion groove 6. Next, insert the end conductor of the branch cable core after removing the insulation layer into the locking block 51 from one side (the main cable core and the branch cable core are distributed up and down along the axial direction of the first bolt 52). Then, slide the sliding block 54 into the sliding groove 7, and rotate the two first bolts 52 respectively. The ends of the two first bolts 52 abut against the pressing block 55, and the pressing block 55 presses against the conductor of the branch cable core. The main cable core and the branch cable core are fastened together by the inner wall of the pressing block 55 and the locking block 51. The second bolt 53 can be tightened later. The end of the second bolt 53 can pass through the clamping block 55 and abut against the branch cable core, so that the main cable core and the branch cable core are more stably fastened in the locking block 51. On the other hand, the setting of the second bolt 53 can limit the clamping block 55 in the axial direction of the main cable core. At the same time, the setting of the second bolt 53 ensures that the clamping block 55 and the sliding block 54 are always connected together, making it more convenient to install and less likely to be lost.

[0027] An insulating and flame-retardant plastic sleeve 9 is wrapped around the locking block 51. The insulating and flame-retardant plastic sleeve 9 is made of PP flame-retardant material and is injected onto the locking block 51 by direct injection molding.

[0028] The sliding groove 7 passes through the locking block 51 in the axial direction relative to the main cable 17. The insulating flame-retardant plastic sleeve 9 is provided with a stop 10 to limit the sliding block 54. The stop 10 is located at one end of the sliding groove 7. A limiting block 20 is provided on the other side wall of the insulating flame-retardant plastic sleeve 9 relative to the stop 10, and the limiting block 20 abuts against the side wall of the locking block 51. The stop 10 prevents the sliding block 54 from accidentally sliding out of the sliding groove 7, and, in conjunction with the limiting block 20, makes the connection between the locking block 51 and the insulating flame-retardant plastic sleeve 9 more stable.

[0029] A groove 11 is provided at the threaded end of the first bolt 52. The groove 11 is circular and its center coincides with the center of the first bolt 52. The groove 11 reduces the contact area between the first bolt 52 and the clamping block 55, making it easier to rotate during tightening and allowing for a tighter tightening.

[0030] Arc-shaped extension sections 19 are provided at both ends of the insulating flame-retardant plastic sheath 9 relative to the axial direction of the main cable 17. The conductor after the main cable core is stripped can be inserted into the locking block 51, while the non-environmentally friendly insulation layer can be located within the arc-shaped extension section 19.

[0031] The upper housing 1 is provided with a filling hole 12 for injecting sealant into the interior. The filling hole 12 communicates with the interior of the housing. A sealing cover 13 is provided on the upper housing 1 to seal the filling hole 12. The sealing cover 13 is fixed to the upper housing 1 by bolts. After the main cable 17 is fixed to the branch cable 18 by the fastener 5, the upper housing 1 and the lower housing 2 can be fixed by fasteners. Then, sealant is injected into the housing through the filling hole 12, and finally the sealing cover 13 is put on.

[0032] A sealing groove 14 is provided on the side of the lower housing 2 opposite to the upper housing 1, and a sealing strip 15 is provided in the sealing groove 14. In this way, when the upper housing 1 and the lower housing 2 are assembled together by bolts, there is a sealing strip 15 between their contact surfaces, thereby improving the sealing performance between the upper housing 1 and the lower housing 2.

[0033] The implementation principle of the wiring structure of a multi-core pre-branched cable 18 in this application embodiment is as follows: When it is necessary to electrically connect the branch cable 18 with the main cable 17, the outer insulation layer of the main cable core can be stripped to expose the conductor. The outer insulation layer of the branch cable core can also be stripped to expose the conductor. The main cable core and the branch cable core are then fixed to each other one by one by the fixing member 5 to achieve electrical connection. When fixing by the fixing member 5, the exposed conductor part of the main cable core after stripping is first inserted from the insertion groove 6 into the locking block 51. Then, the end conductor of the branch cable core after removing the insulation layer is inserted from one side of the locking block 51 into the locking block 51. Then, the sliding block 54 is slid in. The main cable core and the branch cable core are fastened together by rotating the two first bolts 52 into the sliding groove 7 and rotating the two first bolts 52 respectively. The ends of the two first bolts 52 abut against the clamping block 55, and the clamping block 55 presses against the conductor of the branch cable core. The main cable core and the branch cable core are fastened together by the inner wall of the clamping block 55 and the locking block 51. After the fasteners 5 are fixed one by one, the upper housing 1 and the lower housing 2 are assembled. The main cable 17 passes through the main wire hole 3 on the left and right sides respectively, and the branch cable 18 passes through the branch wire hole 4. The upper housing 1 and the lower housing 2 are fixed by fasteners. The sealant is filled into the housing through the glue filling hole 12. Finally, the glue filling hole 12 is sealed by the sealing cover 13.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-core branch cable (18) connector, comprising an upper housing (1) and a lower housing (2), wherein the upper housing (1) and the lower housing (2) are fixed by fasteners, and the upper housing (1) and the lower housing (2) are assembled to form a complete housing, wherein the housing is provided with a main wire hole (3) for a main cable (17) to pass through, the main wire hole (3) penetrating the housing, and the housing is also provided with a branch wire hole (4) for a branch cable (18) to pass through, wherein the main cable (17) and the branch cable (18) passing through the housing are fixedly connected by fasteners (5), characterized in that: The fastener (5) includes a locking block (51), a first bolt (52), a second bolt (53), a sliding block (54), and a clamping block (55). The locking block (51) has a locking groove (6) in the radial direction of the main cable (17) for the main cable (17) to be inserted. The locking groove (6) passes through the locking block (51) relative to the axial direction of the main cable (17). The locking block (51) has a sliding groove (7) for the sliding block (54) to slide into. The first bolt (52) passes through the sliding block. (54) is threadedly connected to the sliding block (54). The clamping block (55) uses the first bolt (52) to press and fix the main cable (17) and the branch cable (18) to the inner wall of the slot (6). The threaded end of the first bolt (52) is pressed against the clamping block (55). The second bolt (53) passes through the sliding block (54) and is threadedly connected to the clamping block (55). The sliding block (54) is provided with a through groove (8) for the second bolt (53) to slide up and down.

2. The multi-core branch cable (18) connector according to claim 1, characterized in that: The locking block (51) is covered with an insulating flame-retardant plastic sleeve (9).

3. A multi-core branch cable (18) connector according to claim 2, characterized in that: The sliding groove (7) passes through the locking block (51) in the axial direction relative to the main cable (17). The insulating flame-retardant plastic sleeve (9) is provided with a stop (10) to limit the sliding block (54). The stop (10) is located at the end of one side of the sliding groove (7).

4. A multi-core branch cable (18) connector according to claim 1, characterized in that: The threaded end of the first bolt (52) is provided with a groove (11), which is circular and its center coincides with the center of the first bolt (52).

5. A multi-core branch cable (18) connector according to claim 2, characterized in that: The insulating flame-retardant plastic sheath (9) has arc-shaped extension sections (19) at both ends of the main cable (17) in the axial direction.

6. A multi-core branch cable (18) connector according to claim 5, characterized in that: The insulating flame-retardant plastic sleeve (9) has a limiting block (20) on the side wall of the other end opposite to the stop block (10), and the limiting block (20) abuts against the side wall of the end of the locking block (51).

7. A multi-core branch cable (18) connector according to claim 1, characterized in that: The upper housing (1) is provided with a glue-filling hole (12) for injecting sealant into the interior. The glue-filling hole (12) is connected to the interior of the housing. The upper housing (1) is provided with a sealing cap (13) to seal the glue-filling hole (12).

8. A multi-core branch cable (18) connector according to claim 1, characterized in that: The lower housing (2) is provided with a sealing groove (14) on one side relative to the upper housing (1), and a sealing strip (15) is provided in the sealing groove (14).

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