A cable connector

Abstract

The present invention discloses a cable connector, which comprises two identical connection units. Each connection unit includes an insulating sleeve. One end of the outer side of the insulating sleeve is provided with a first external thread, and the other end is provided with a second external thread. A conductive inner core is inserted into the insulating sleeve, and an extrusion spring is arranged at one end of the conductive inner core. A screw sleeve is sleeved outside the insulating sleeve, and an internal thread of the screw sleeve capable of engaging with the first external thread is arranged inside the screw sleeve. The second external thread engages with the internal thread at one end of a sealing sleeve, and the other end of the sealing sleeve has a blocking hole. A cable sleeve passes through the blocking hole, and a raised sleeve blocking edge is arranged in the middle of the cable sleeve, and the sleeve blocking edge is blocked by the blocking hole. This connector can effectively electrically connect the ends of two cables, will not cause a circuit break due to thermal expansion and contraction, has good waterproof performance, can also effectively reduce the influence of sand powder on the connection operation, and is simple to operate and easy to use in use.

Description

Technical Field

[0001] The present invention relates to an electrical connection device, and particularly to a cable connector for electrically connecting the conductive ends of two cables. Background Art

[0002] When conducting prospecting for minerals, oil, etc. in the wild, it is often necessary to connect different sections of cables to increase their length to supply power to the detection equipment. At this time, the connection between cables should ensure reliable connection strength, good insulation sealing performance, and waterproof and sand-proof performance, and also ensure that the connection components will not become loose or open circuit due to the influence of thermal expansion and contraction. However, harsh environments such as sandy fields, rain, and large day-night temperature differences in the wild often cause electrical connection failures between cables, such as the connection device being mixed with sand powder and unable to make effective contact, being washed by rain and causing electric leakage, or being open circuit due to thermal expansion and contraction. Currently, there is no good connection device to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide a cable connector that can effectively electrically connect the ends of two cables, will not cause an open circuit due to thermal expansion and contraction, has good waterproof performance, can also effectively reduce the influence of sand powder on the connection operation, and is simple to operate and easy to use in practice.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A cable connector includes two identical connection units. The connection unit includes an insulating sleeve. One end of the outer side of the insulating sleeve has a first external thread, and the other end has a second external thread. A conductive inner core passes through the insulating sleeve. One end of the conductive inner core is a contact end, and the other end is a cable connection end. There is a raised inner core blocking edge in the middle of the conductive inner core. A waterproof sealing ring is provided at the opening of the insulating sleeve around the contact end, and a compression spring is provided on one side of the cable connection end; a screw sleeve is sleeved outside the insulating sleeve, and the screw sleeve is provided with a screw sleeve internal thread that can engage with the first external thread; the second external thread engages with the sealing sleeve internal thread at one end of the sealing sleeve, and the other end of the sealing sleeve has a blocking hole. A cable sleeve passes through the blocking hole. There is a raised sleeve blocking edge in the middle of the cable sleeve. A sleeve sealing ring is provided on one side of the sleeve blocking edge, and the sleeve sealing ring is hermetically connected to the insulating sleeve. The sleeve blocking edge is blocked by the blocking hole.

[0006] Preferably, a number of first grooves longitudinally passing through the first external thread are provided on the first external thread, a number of second grooves longitudinally passing through the screw sleeve internal thread are provided on the screw sleeve internal thread, and a number of protrusions that can penetrate into the second grooves are provided on the side of the second external thread.

[0007] Preferably, a number of convex ribs are provided on the outer side wall of the screw sleeve.

[0008] Preferably, the contact end has a contact inclined surface.

[0009] Preferably, a washer is sleeved on the cable connection end of the conductive inner core.

[0010] Preferably, several waterproof sealing rings are provided on the inner side wall of the cable sleeve.

[0011] In the above technical solution, when in use, two cables are respectively inserted into the cable sleeves of two connection units, and the bare wires of the cables are welded to the cable connection ends of the conductive inner cores. Then, the first external threads of the two connection units can be engaged and connected with the internal threads of the screw sleeve of any party, and the waterproof sealing rings on both sides are in close contact to prevent water from flowing in from the contact part. Since the sealing sleeve presses the compression spring, the conductive inner core is always in a state of being pressed by the spring. When the two conductive inner cores are in contact, they also press against each other, exerting a reaction force on the compression spring. In this way, regardless of a certain amount of expansion or contraction during thermal expansion and contraction, good electrical contact is always maintained under the action of the compression spring. The settings of the sealing sleeve and the sleeve sealing ring also ensure the waterproofness of this connection part. The cable sleeve itself can be made of rubber material with self-waterproofness, and the waterproof sealing rings inside it have further waterproof performance. During the connection operation, the settings of the first groove and the second groove can make the abrasive powder leak out, preventing the abrasive powder from mixing into the threads and causing connection difficulties. And when one screw sleeve rotates and engages with the first external threads of the two connection units, the other screw sleeve can be sleeved on the protrusion of the insulating sleeve inside it to play a role in preventing the insulating sleeve on this side from rotating axially, which is beneficial to the connection of the first screw sleeve to the two first external threads. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the present invention. Detailed Embodiments

[0013] The present invention will be further described below with reference to the drawings:

[0014] As Figure 1As shown in the figure, this cable connector includes two identical connection units 1. Each connection unit has an insulating sleeve 2, with a first external thread 210 at one end and a second external thread 211 at the other end. A conductive inner core 3 is inserted into the insulating sleeve 2. One end of the conductive inner core is a contact end 310, which can be a flat surface or an inclined surface. The flat surfaces or inclined surfaces of the contact ends of the two conductive inner cores are fitted together to complete the electrical connection. The other end is a cable connection end 311. During use, the bare wire of the cable is welded to the cable connection end 311. In the middle of the conductive inner core 3, there is a raised inner core blocking edge 312 for blocking the compression spring 6 sleeved on the conductive inner core. A waterproof sealing ring 4 is also provided between the contact end 310 and the insulating sleeve 2. The waterproof sealing ring 4 is arranged at the opening of the insulating sleeve 2 and protrudes from the opening. When the two insulating sleeves are connected together, the waterproof sealing rings 4 are closely attached to prevent water from flowing in from the contact area. To make the compression spring 6 squeeze the conductive inner core more evenly, a washer 5 can be sleeved on the cable connection end of the conductive inner core. The compression spring 6 squeezes the washer 5, and the washer 5 then squeezes the conductive inner core. A screw sleeve 7 is sleeved on the outside of the insulating sleeve 2. The inner side of the screw sleeve 7 is provided with an internal screw thread 711 of the screw sleeve. One screw sleeve 7 can connect the two insulating sleeves 2 through the first external thread 210 thereon (that is, one screw sleeve is simultaneously sleeved on the two first external threads. At this time, the other screw sleeve retreats to the other end of the insulating sleeve to expose the first external thread for the previous screw sleeve to use). At this time, the contact ends 310 of the two conductive inner cores 3 are in contact, and the two waterproof sealing rings 4 are closely attached.

[0015] To prevent the mixing of sand powder from blocking the engagement of the internal and external threads, several longitudinal first grooves 212 are provided on the first external thread 210, and several second grooves 712 that cross the internal screw thread 711 of the screw sleeve 7 are also provided on the internal screw thread 711 of the screw sleeve 7. In this way, when the screw sleeve 7 engages with the first external thread 210 on the two insulating sleeves 2, the sand powder can leak out in time from the first grooves and the second grooves to prevent the blockage of the thread engagement. Several protrusions 213 can also be provided on the side of the insulating sleeve 2 close to the second external thread 211, so that the second groove 712 can be sleeved on these protrusions. In this way, when the screw sleeve 7 is sleeved on these protrusions 213, when the screw sleeve 7 of the other connection unit connects the two insulating sleeves 2, the insulating sleeve 2 being connected can be prevented from rotating axially because its screw sleeve and the protrusions are fixed, increasing the smoothness of the operation. Several ridges 713 can be provided on the outside of the screw sleeve 7 to facilitate gripping.

[0016] A sealing sleeve 8 is sleeved on the second external thread 211. The internal thread 810 of the sealing sleeve thereon engages with the second external thread 211, and the other end has a blocking hole 811. One end of the cable sleeve 9 passes through the blocking hole 811. One side of the sleeve blocking edge 910 on the cable sleeve 9 contacts the blocking hole and is blocked by the blocking hole. A sleeve sealing ring 911 is installed at another place. The sleeve sealing ring 911 is in close contact with the insulating sleeve 2, so that the contact part has waterproof performance. At the same time, one end of the cable sleeve 9 presses the compression spring 6.

[0017] The cable sleeve can be made of rubber. The cable passes through it. After the cable sleeve shrinks, it can isolate rainwater outside. Several waterproof sealing rings can also be added to the inner wall of the cable sleeve to enhance the water isolation effect.

[0018] When using this cable connector, it is very easy to connect two connection units together. It has good waterproof effect, is not affected by sand, and the thermal expansion and contraction caused by the cold and hot temperature difference will not weaken the electrical connection effect of the two contact ends.

[0019] This embodiment is only an illustration of the concept and implementation of the present invention, and does not limit it. Under the concept of the present invention, the technical solutions without substantial transformation are still within the protection scope.

Claims

1. A cable connector, comprising two identical connection units, characterized in that, The connection unit includes an insulating sleeve. One end of the outer side of the insulating sleeve has a first external thread, and the other end has a second external thread. A conductive inner core is inserted into the insulating sleeve. One end of the conductive inner core is a contact end, and the other end is a cable connection end. There is a raised inner core blocking edge in the middle of the conductive inner core. A waterproof sealing ring is provided at the opening of the insulating sleeve around the contact end, and a compression spring is provided on one side of the cable connection end; A screw sleeve is sleeved outside the insulating sleeve, and the screw sleeve is provided with an internal thread of the screw sleeve that can engage with the first external thread; The second external thread engages with the internal thread of the sealing sleeve at one end of the sealing sleeve. The other end of the sealing sleeve has a blocking hole, and a cable sleeve passes through the blocking hole. There is a raised sleeve blocking edge in the middle of the cable sleeve, and a sleeve sealing ring is provided on one side of the sleeve blocking edge. The sleeve sealing ring is hermetically connected to the insulating sleeve, and the sleeve blocking edge is blocked by the blocking hole.

2. The cable connector according to claim 1, wherein, A number of first grooves longitudinally passing through the first external thread are provided on the first external thread, a number of second grooves longitudinally passing through the internal thread of the screw sleeve are provided on the internal thread of the screw sleeve, and a number of protrusions capable of penetrating into the second grooves are provided on the side of the second external thread.

3. The cable connector according to claim 2, characterized in that, A number of ridges are provided on the outer side wall of the screw sleeve.

4. The cable connector according to claim 1, 2 or 3, characterized in that, The contact end has a contact inclined surface.

5. The cable connector according to claim 1, 2 or 3, characterized in that, A washer is sleeved on the cable connection end of the conductive inner core.

6. The cable connector according to claim 4, characterized in that, A number of waterproof sealing rings are provided on the inner side wall of the cable sleeve.

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