A connector

Abstract

The application belongs to the technical field of cable connection, and discloses a connector. The connector comprises a wire insertion tube, a wedge-shaped wire pressing part, an elastic part and a pressure sensor. The wedge-shaped wire pressing part is matched with a wire insertion hole in the wire insertion tube to realize self-locking after the wire is inserted and stable connection. The pressure sensor is arranged in the wire passing cavity to detect the pressure of the wire in the radial direction and the circumferential wall of the wire passing cavity, that is, the compression force borne by the wire, so that the compression state of the wire in the connector is known to the outside world, timely adjustment can be made, and the problem of not close contact between the wire in the radial direction and the circumferential wall of the wire passing cavity is avoided, and the safety hidden danger is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable connection, in particular to a connector. BACKGROUND

[0002] The bare wire of the cable is usually a stranded wire composed of multiple copper wires or aluminum wires. When the bare wire is inserted into the cable connector, on the one hand, the inserted end of the bare wire needs to meet the requirement of being inserted into the wire insertion hole of the connector, and the hole diameter of the wire insertion hole is larger than the wire diameter of the bare wire. On the other hand, the contact area between the bare wire and the peripheral wall of the conductive medium in the connector after insertion also needs to meet the requirement. The contact area between the bare wire and the peripheral wall of the conductive medium in the connector affects the current flow area. A small current flow area will cause a large resistance when the current passes through the bare (conductive) wire, and the resistance will be converted into heat, thereby causing the wire head to heat up, and even possibly causing a fire.

[0003] In the process of connecting the wire and the connector, the existing crimp-free terminal usually cannot obtain the internal information of the terminal, and cannot know whether the peripheral wall of the wire is tightly connected with the peripheral wall of the conductive medium in the connector after the wire is inserted into the connector. Therefore, if the contact area between the peripheral wall of the bare wire and the peripheral wall of the conductive medium in the connector is not tightly contacted, the wire will heat up greatly after being powered on due to a small current flow area, and there will be a safety hazard. SUMMARY

[0004] The present application aims to provide a connector which can ensure stable connection between the wire and the peripheral wall of the conductive medium, and can obtain the compression force borne by the wire.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A connector comprises a wire insertion tube, a wedge-shaped wire pressing part, an elastic part and a pressure sensor. The wire insertion tube comprises a first insertion tube and a second insertion tube, and the first insertion tube and the second insertion tube are respectively provided with an insertion section. The insertion section of the first insertion tube and the insertion section of the second insertion tube are inserted along the axial direction. The first insertion tube and the second insertion tube are both provided with a wire insertion hole extending along the axial direction thereof, and the diameter of the wire insertion hole gradually decreases in the direction away from the insertion section. The wedge-shaped wire pressing part is movably arranged in the wire insertion hole, and the wedge-shaped wire pressing part is provided with a wire passing cavity along the axial direction thereof. The end of the wedge-shaped wire pressing part away from the insertion section comprises a wedge-shaped part which can contract or expand relative to the axis of the wire passing cavity. The wedge-shaped part can contract under the pressing action of the hole wall of the wire insertion hole to lock the wire. The elastic part is arranged between the wedge-shaped wire pressing part of the first insertion tube and the wedge-shaped wire pressing part of the second insertion tube. The pressure sensor is arranged on the cavity wall of the wire passing cavity and flush with the surface of the cavity wall, and is used for detecting the compression force borne by the wire. The first insertion tube, the second insertion tube and the wedge-shaped wire pressing part are all made of a conductive material.

[0007] Preferably, the wedge-shaped wire pressing part is provided with a groove on the cavity wall of the wire passing cavity, and the pressure sensor is arranged in the groove; a first through hole is formed through the groove in the radial direction of the wire passing cavity, and is used for leading out the lead wire of the pressure sensor.

[0008] Preferably, the outer peripheral wall of the wedge-shaped wire pressing part is provided with a wire slot, and the lead wire is led out from the end surface of the wedge-shaped wire pressing part through the wire slot after being led out from the groove.

[0009] Preferably, the wire collecting tube is coaxially arranged in the plug-in section and located at one end of the wire insertion hole; the tube wall of the wire collecting tube is provided with a cavity, the cavity is coaxially provided with a bearing, and the outer ring of the bearing is fixedly provided with a clock spring; the lead wire is wound on the clock spring, and the two ends of the lead wire are respectively led out from the tube wall of the wire collecting tube in the axial direction.

[0010] Preferably, the clock spring is provided with two, and the two clock springs are spaced and arranged on the bearing.

[0011] Preferably, the elastic force of the clock spring is smaller than the locking force of the wedge-shaped wire pressing part to the wire.

[0012] Preferably, the pressure sensor is arranged in the circumferential direction of the cavity wall of the wire passing cavity.

[0013] Preferably, the pressure sensor comprises a resistance strain sensor.

[0014] Preferably, the fixing part is provided with a wire hole, and the wire hole is in communication with the inside and outside of the wire insertion tube.

[0015] Preferably, the electronic control board and the power taking coil are further included, the pressure sensor is electrically connected with the electronic control board, and the power taking coil is used for powering the electronic control board.

[0016] The beneficial effects of the present application are as follows:

[0017] The application discloses a connector which comprises a plug-in tube, a wedge-shaped wire pressing part, an elastic part, a fixing part and a pressure sensor. The plug-in tube comprises a first plug-in tube and a second plug-in tube, and the first plug-in tube and the second plug-in tube are respectively provided with a plug-in section. The plug-in section of the first plug-in tube and the plug-in section of the second plug-in tube are plugged in an axial direction. The first plug-in tube and the second plug-in tube are both provided with a wire insertion hole extending along the axial direction of the plug-in tube, and the diameter of the wire insertion hole gradually decreases in a direction away from the plug-in section. The wedge-shaped wire pressing part is movably arranged in the wire insertion hole, and the wedge-shaped wire pressing part is provided with a wire passing cavity along the axial direction of the wedge-shaped wire pressing part. An end of the wedge-shaped wire pressing part away from the plug-in section comprises a wedge-shaped part which can contract or expand relative to the axial direction of the wire passing cavity. The wedge-shaped part can contract under the pressing action of the hole wall of the wire insertion hole to lock the wire. The elastic part is arranged between the wedge-shaped wire pressing part of the first plug-in tube and the wedge-shaped wire pressing part of the second plug-in tube. The pressure sensor is arranged on the cavity wall of the wire passing cavity and flush with the surface of the cavity wall, and is used for detecting the compression force borne by the wire. The wedge-shaped wire pressing part and the wire insertion hole are matched to realize self-locking of the wire after being inserted and stable connection. The pressure sensor is arranged in the wire passing cavity to detect the pressure of the wire in the radial direction and the circumferential wall of the wire passing cavity, that is, the compression force borne by the wire, so that the compression state of the wire in the connector is known to the outside world, and timely adjustment can be made to avoid the problem that the wire in the radial direction and the circumferential wall of the wire passing cavity are not in close contact, thereby avoiding the safety hazard. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is an assembly structure schematic diagram of the connector provided by the embodiment of the application;

[0019] Figure 2 Fig. 2 is an axial cross-sectional structure schematic diagram of the connector provided by the embodiment of the application;

[0020] Figure 3 Fig. 3 is a cross-sectional structure schematic diagram of the wire receiver in Fig. 1; Figure 2 Fig. 4 is a cross-sectional structure schematic diagram of the wire receiver in Fig. 1;

[0021] Figure 4 Fig. 5 is a structure schematic diagram of the clockwork spring in Fig. 1; Figure 3 Fig. 6 is a structure schematic diagram of the clockwork spring in Fig. 1;

[0022] Figure 5 Fig. 7 is a structure schematic diagram of the connection relationship between the positioning pin and the lead wire in Fig. 1. Figure 2 Fig. 8 is a structure schematic diagram of the connection relationship between the positioning pin and the lead wire in Fig. 1.

[0023] In the drawings:

[0024] 1, first plug-in tube; 11, wire insertion hole; 12, wedge-shaped wire pressing part; 121, wire passing cavity; 122, groove; 123, first through hole; 124, wire slot; 14, first step part;

[0025] 2, second plug-in tube; 241, second step part; 242, third step part;

[0026] 3, positioning hole;

[0027] 31, fixing member; 32, second through hole; 311, shielding layer; 312, second insulating layer;

[0028] 4, elastic member;

[0029] 5, wire; 51, first insulating layer;

[0030] 6, take-up tube; 61, clock spring;

[0031] 13, resistance strain gauge; 131, lead wire;

[0032] 621, outer ring of bearing; 622, inner ring of bearing;

[0033] 631, first end face; 631', third through hole;

[0034] 632, second end face; 632', fourth through hole;

[0035] 70, insulating sleeve; 71, first insulating connecting sleeve; 711, fifth through hole; 72, second insulating connecting sleeve; 73, flange;

[0036] 80, electric control board; 81, power taking coil. DETAILED DESCRIPTION

[0037] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for the convenience of description.

[0038] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] This invention discloses a connector, such as Figures 1-2 As shown, the connector includes a connector tube, a wedge-shaped clamping element 12, an elastic element 4, a fixing element 31, and a pressure sensor. The connector tube includes a first connector tube 1 and a second connector tube 2, each with a insertion section. The insertion sections of the first connector tube 1 and the second connector tube 2 are axially inserted. Specifically, the insertion sections of the first connector tube 1 and the second connector tube 2 overlap after insertion; that is, the outer diameter of the insertion section of either the first connector tube 1 or the second connector tube 2 is less than or equal to the inner diameter of the other insertion section.

[0042] In some embodiments, a positioning hole 3 is provided at the overlapping position of the insertion segments of the first insertion tube 1 and the second insertion tube 2, and a fixing member 31 passes through the positioning hole 3 of the insertion segments to fix the relative position of the first insertion tube 1 and the second insertion tube 2. The fixing member 31 may be configured as a positioning pin.

[0043] In some specific embodiments, such as Figure 2As shown, the first step part 14 is arranged on the inner wall of the splicing section of the first splicing pipe 1, the second step part 241 is arranged on the inner wall of the splicing section of the second splicing pipe 2, and the third step part 242 is arranged on the outer wall of the splicing section of the second splicing pipe 2. It can be understood that the end of the splicing section of the first splicing pipe 1 abuts against the third step part 242 of the second splicing pipe 2, and the end of the splicing section of the second splicing pipe 2 abuts against the first step part 14 of the inner wall of the first splicing pipe 1. The first step part 14 of the first splicing pipe 1 also abuts against the end face of the inner wire collecting pipe 6 in the axial direction, and the second step part 241 of the second splicing pipe 2 also abuts against the end face of the inner wire collecting pipe 6 in the axial direction.

[0044] The first splicing pipe 1 and the second splicing pipe 2 are both provided with a wire inserting hole 11 extending along the axial direction thereof, the diameter of the wire inserting hole 11 gradually decreases in the direction away from the splicing section; the wedge-shaped wire pressing part 12 is movably arranged in the wire inserting hole 11, the wedge-shaped wire pressing part 12 is provided with a wire passing cavity 121 along the axial direction thereof, and the end of the wedge-shaped wire pressing part 12 away from the splicing section comprises a wedge-shaped part capable of being contracted or expanded relative to the axial direction of the wire passing cavity 121, and the wedge-shaped part can be contracted under the abutting action of the hole wall of the wire inserting hole 11 to lock the wire 5; the elastic part 4 is arranged between the wedge-shaped wire pressing part 12 of the first splicing pipe 1 and the wedge-shaped wire pressing part 12 of the second splicing pipe 2; the fixing part 31 is arranged in the splicing section and passes through the elastic part 4 in the radial direction of the splicing section, so as to fix the relative positions of the first splicing pipe 1, the second splicing pipe 2 and the elastic part 4; the pressure sensor is arranged on the cavity wall of the wire passing cavity 121 and flush with the surface of the cavity wall, and is used for detecting the compression force borne by the wire 5. The first splicing pipe 1, the second splicing pipe 2 and the wedge-shaped wire pressing part 12 are all made of conductive materials, and therefore, the insulating sleeve 70 is arranged on the outer periphery of the first splicing pipe 1 and the second splicing pipe 2 after the splicing assembly is completed. It can be understood that the wedge-shaped wire pressing part 12 and the wire inserting hole 11 are matched to realize the self-locking of the wire 5 after being inserted and the stable connection, the pressure sensor is arranged in the wire passing cavity 121 to detect the pressure of the wire 5 radially against the peripheral wall of the wire passing cavity 121, that is, the compression force borne by the wire 5, so that the outside world can know the compression state of the wire 5 in the connector, and the wire 5 can be adjusted in time to avoid the problem that the wire 5 radially against the peripheral wall of the wire passing cavity 121 is not tightly contacted, which exists the potential safety hazard.

[0045] Specifically, the internal structure of the first splicing pipe 1 except the splicing section is the same as the mirror image of the internal structure of the second splicing pipe 2 except the splicing section, and the internal structure of the first splicing pipe 1 is taken as an example for description.

[0046] As shown in the figure, Figure 2As shown, the inner wall of the wire insertion hole 11 in the first plug-in pipe 1 is frustoconical, and the end of the wire insertion hole 11 into which the wire 5 is inserted is a reduced diameter end, that is, the diameter of the wire insertion hole 11 gradually decreases in the direction away from the plug-in section, or in other words, the diameter of the wire insertion hole 11 gradually decreases in the direction from the plug-in section to the end of the wire insertion hole 11 into which the wire 5 is inserted. A wedge-shaped wire pressing piece 12 adapted to the frustoconical wire insertion hole 11 of the first plug-in pipe 1 is arranged in the plug-in pipe, and the wedge-shaped wire pressing piece 12 is electrically conductive. It can be understood that the wires 5 at both ends of the connector are electrically connected through the wedge-shaped wire pressing piece 12 of the first plug-in pipe 1, the first plug-in pipe 1, the plug-in section of the first plug-in pipe 1 and the plug-in section of the second plug-in pipe 2, the second plug-in pipe 2, and the wedge-shaped wire pressing piece 12 of the second plug-in pipe 2.

[0047] The wedge-shaped part of the wedge-shaped wire pressing piece 12 is composed of a plurality of pressing pieces with trapezoidal cross sections surrounding the first plug-in pipe 1 in the axial direction, and the wedge-shaped part formed by the surrounding is a frustum, and the inside of the frustum is formed with a wire passing cavity 121 for the wire 5, and the frustum and the wire passing cavity 121 are coaxially arranged. The plurality of pressing pieces of the wedge-shaped part can be contracted towards the axis of the wire passing cavity 121 under the pressing action of the hole wall of the wire insertion hole 11 to achieve the compression locking of the wire 5.

[0048] The wedge-shaped wire pressing piece 12 of the first plug-in pipe 1 and the wedge-shaped wire pressing piece 12 of the second plug-in pipe 2 are provided with an elastic member 4, which can be a compression spring. Optionally, a fixing member 31 is arranged to pass through the gap of the compression spring in the radial direction to fix the compression spring, so as to facilitate the synchronous reset of the wedge-shaped wire pressing pieces 12 at both ends of the elastic member 4. When the wire 5 passes through the wire passing cavity 121 of the wedge-shaped wire pressing piece 12, the compression spring is compressed. It can be understood that the wire 5 is wrapped with a first insulating layer 51, and the end of the wire 5 is exposed for connection. In use, when the end of the wire 5 is inserted into the wire passing hole, the wire passing cavity 121 needs to be moved towards one end of the fixing member 31 against the elastic force of the elastic member 4 to open the wire insertion hole 11 of the wire passing cavity 121, and then the wire 5 is inserted to the bottom and abuts against the positioning pin. The end of the wire 5 stops being inserted, and under the driving of the reset movement of the compression spring, the wedge-shaped wire pressing pieces 12 of the first plug-in pipe 1 and the second plug-in pipe 2 and the wire 5 move reversely. At this time, the compression spring resets and moves to drive the pressing pieces of the wedge-shaped wire pressing pieces 12 to press the exposed wire 5 to achieve self-locking, so that the wire 5 is in close contact with the wedge-shaped wire pressing pieces 12.

[0049] In some embodiments, the pressure sensor is arranged on the wall of the wire passing cavity 121 and flush with the surface of the wall, for detecting the compression force borne by the wire 5. Optionally, the pressure sensor is arranged near the end of the positioning pin. In some specific embodiments, the wedge-shaped wire pressing member 12 is provided with a groove 122 on the wall of the wire passing cavity 121, and the pressure sensor is arranged in the groove 122; a through hole is formed in the groove 122 in the radial direction of the wire passing cavity 121, for leading out the lead wire 131 of the pressure sensor, which can be understood as that the pressure sensor is electrically connected to the control unit through the lead wire 131. By arranging the groove 122, the wire 5 can smoothly pass through the wire passing cavity 121 without being affected by the pressure sensor.

[0050] In some embodiments, the outer peripheral wall of the wedge-shaped wire pressing member 12 is provided with a wire groove 124, and the lead wire 131 is led out from the end surface of the wedge-shaped wire pressing member 12 through the wire groove 124 after passing through the groove 122. The lead wire 131 is hidden in the wire groove 124 arranged on the outer peripheral surface of the wedge-shaped wire pressing member 12 and led out from the end surface of the wedge-shaped wire pressing member 12 near the end of the positioning pin. It can be understood that arranging the wire groove 124 to accommodate the hidden lead wire 131 can avoid the friction between the wedge-shaped wire pressing member 12 and the inner wall of the wire insertion tube (wire insertion hole 11) caused by the relative movement between them, which can cause the lead wire 131 to be damaged and exposed to the internal conductive wire, resulting in damage to the sensor or the control unit.

[0051] In some embodiments, the pressure sensors are arranged in a circumferential direction along the wall of the wire passing cavity 121, which can be understood as that arranging the pressure sensors in the circumferential direction along the wall of the wire passing cavity 121 can uniformly detect the compression force of each part of the wire 5 in the circumferential direction. The pressure sensors arranged in the circumferential direction can be considered as a group, and multiple groups of pressure sensors can also be arranged. The multiple groups of pressure sensors are also arranged in an axial direction along the wire passing cavity 121, for detecting the compression force of different positions of the wire 5 in the axial direction, so that the detection result is more accurate. In some specific embodiments, the pressure sensor includes a resistance strain sensor, and the resistance strain sensor includes a resistance strain gauge 13; wherein the resistance strain gauges 13 are arranged in a circumferential direction along the wall of the wire passing cavity 121. It can be understood that the resistance strain gauges 13 are insulated, which can ensure that the wire 5 will not burn out the pressure sensor after the pressure measurement is completed. It can be understood that the resistance strain gauges 13 are subjected to the radial bulging pressure generated by the wire 5 on the inner circumferential wall of the wedge-shaped wire pressing member 12, and the mechanical strain generated causes the resistance value of the internal metal strain gauge to change accordingly. By measuring the resistance value change of the metal strain gauge, the tightness of the contact between the exposed wire 5 and the peripheral wall of the wedge-shaped wire pressing member 12 can be determined. Multiple groups of resistance strain gauges 13 can also be arranged to more comprehensively measure the compression of different parts of the wire 5, so that the detection result is more accurate.

[0052] In some embodiments, the connector of the present application further comprises a take-up tube 6 coaxially arranged in the plug-in section and located at one end of the wire insertion hole 11; the take-up tube 6 is an insulating member, and the inner diameter of the take-up tube 6 is larger than the outer diameter of the compression spring and the wedge-shaped wire pressing member 12. The tube wall of the take-up tube 6 is a cavity, and a bearing is coaxially arranged in the cavity of the tube wall of the take-up tube 6, and the outer ring 621 of the bearing is coaxially arranged with a clock spring 61; a lead wire 131 is wound on the clock spring 61, and the two ends of the lead wire 131 are respectively axially pulled out from the tube wall of the take-up tube 6.

[0053] In some embodiments, two clock springs 61 are arranged on the bearing. It can be understood that since one end of the clock spring 61 rotates with the bearing, it is easy to cause the lead wire 131 to twist and bend, and the cavity space of the take-up tube 6 is small, which is easy to cause jamming and damage to the lead wire 131. Therefore, two clock springs 61 are arranged, and the two ends of the lead wire 131 can be stretched or retracted at the same time.

[0054] Specifically, as shown in Figures 2-4 the outer ring 621 of the bearing is coaxially arranged with two clock-type clock springs 61, and the same lead wire 131 is wound on the two clock springs 61 and is wound with the shape of the clock spring 61. One end of the clock spring 61 is fixed to the outer ring 621 of the bearing as a fixed end, and the other end is spirally wound on the outer ring 621 of the bearing as a stretching end. The lead wire 131 led out of the stretching end of one clock spring 61 passes through the third through hole 631' arranged on the first end surface 631 of the take-up tube 6 in the axial direction, and the lead wire 131 led out of the stretching end of the other clock spring 61 passes through the fourth through hole 632' arranged on the second end surface 632 of the take-up tube 6 in the axial direction. Among them, the lead wire 131 between the two clock springs 61 is connected from the position of the fixed end, so that the lead wire 131 at both ends of the take-up tube 6 can be pulled out and retracted, and the lead wire 131 between the two clock springs 61 can rotate with the bearing, so that the lead wire 131 as a whole is not easy to twist and deform. It can be understood that the arrangement of the take-up tube 6 makes the wedge-shaped wire pressing member 12 of the first plug-in tube 1 or the wedge-shaped wire pressing member 12 of the second plug-in tube 2 not affected when moving in the wire insertion hole 11, or in other words, the lead wire 131 of the pressure sensor will not be broken.

[0055] In some embodiments, the elastic force of the clock spring 61 is smaller than the locking force of the wedge-shaped wire pressing member 12 on the lead wire 5, so that the lead wire 131 can be easily pulled out and will not affect the locking of the wedge-shaped wire pressing member 12 on the lead wire 5.

[0056] In use, the inner ring 622 of the bearing is fixed to the inner wall of the wire collecting tube 6, and as the wedge-shaped wire pressing part 12 moves in the axial direction towards the wire 5 insertion port of the insertion hole 11, the wire 5 is pulled on the clock spring 61, the clock spring 61 rotates with the outer ring 621 of the bearing relative to the inner ring, the lead 131 of the released pressure sensor is lengthened, and the elastic force of the clock spring 61 is less than the locking force of the wedge-shaped wire pressing part on the wire 5; as the wedge-shaped wire pressing part moves in the axial direction thereof towards the positioning pin, the clock spring 61 rotates to recover the lead 131 of the pressure sensor under the action of its own contraction force.

[0057] In some embodiments, the fixing part 31 is provided with a wire hole that communicates between the inside and outside of the wire insertion tube. As shown in Figures 2-3 the drawing, the lead 131 led out from the stretched end of one clock spring 61 passes out through the third through hole 631' provided on the first end surface 631 in the axial direction of the wire collecting tube 6, then passes through the wire hole of the fixing part 31 and out of the wire insertion tube, and the lead 131 led out from the stretched end of the other clock spring 61 passes out through the fourth through hole 632' provided on the second end surface 632 in the axial direction of the wire collecting tube 6. In other words, the lead 131 of the pressure sensor passes out from the wire slot 124, passes into the wire collecting tube 6 through the fourth through hole 632' provided on the second end surface 632 in the axial direction of the wire collecting tube 6, then winds around the two clock springs 61, passes out through the third through hole 631' provided on the first end surface 631 in the axial direction of the wire collecting tube 6, then passes through the wire hole of the fixing part 31 and out of the wire insertion tube. In some specific embodiments, as shown in Figure 5 the drawing, the positioning pin is a hollow tube, the hollow interior serves as a wire hole, the inner wall of the tube is provided with a shielding layer 311 and a second insulating layer 312, and the second through hole 32 is formed in the tube wall to make the wire hole communicate with the inside of the wire insertion tube.

[0058] In some embodiments, the two ends of the insulating sleeve 70 are provided with a first insulating connecting sleeve 71 and a second insulating connecting sleeve 72. The circumferential direction of the open end of the first insulating connecting sleeve 71 is provided with a flap 73 extending towards the central axis thereof, which contacts the wire 5 so that the wire 5 is not easy to loosen.

[0059] In some embodiments, the connector of the present application further comprises an electric control board 80 and a power taking coil 81, wherein the pressure sensor is electrically connected to the electric control board 80, and the power taking coil 81 is used to power the electric control board 80. In some specific embodiments, as shown in Figure 2As shown, the cavity outside the wire passing position between the opening of the first insulating connecting sleeve 71 and the wire insertion hole 11 is provided with an electric control board 80 and a power taking coil 81 electrically connected with the electric control board 80 close to the insertion hole. The wire passing position and the electric control board 80 and the power taking coil 81 can be separated and fixed by an insulating barrier (not shown in the figure). The electric control board 80 is provided with a protection circuit and a shielding cover or shielding layer 311 made of soft magnetic alloy material to ensure long-term stable operation of the electric control board 80.

[0060] In some embodiments, the insulating sleeve 70 is provided with a first through hole 123 at a position corresponding to the end of the positioning pin, so as to lead out the lead wire 131 of the pressure sensor, and the first insulating connecting sleeve 71 is provided with a fifth through hole 711 to lead in and connect with the electric control board 80. In this way, the volume occupied by the lead wire 131 or part of the lead wire 131 in the connector can be small. In order to fix the lead wire 131 led into the first insulating connecting sleeve 71 from the positioning pin, a third insulating connecting sleeve can be arranged outside the insulating sleeve 70 to clamp the lead wire 131 between the insulating sleeve 70 and the third insulating connecting sleeve, or the lead wire 131 can be embedded in the sleeve wall of the insulating sleeve 70 and the sleeve wall of the first insulating connecting sleeve 71 during production and manufacturing. One end of the embedded lead wire can extend into the wire hole of the positioning pin to connect the lead wire 131 of the pressure sensor through the insertion head, and the other end can be led out from the sleeve wall of the first insulating connecting sleeve 71 to connect the electric control board 80.

[0061] In some specific embodiments, the electric control board 80 is provided with a single-chip microcomputer, a power module and a wireless module. The power taking coil 81 uses electromagnetic induction principle to take power by inducting the primary current flowing through the exposed wire 5 and the connector. The change of the on-off current generates a magnetic field, and the power taking coil 81 takes power by inducting the electromagnetic field generated by the current flowing through the exposed wire 5 in the first insulating connecting sleeve 71, and the current generated by induction in the power taking coil 81 charges the power module to provide normal operation of the single-chip microcomputer and the wireless module inside the electric control board 80. The pressure sensor connects the single-chip microcomputer through the lead wire 131 to convert the detected resistance change into an electric signal, and the single-chip microcomputer sends the resistance change signal to the wireless module, and the collected resistance change data is transmitted to the mobile phone, handheld detection device or host background in real time through wireless transmission. When installing or maintaining the terminal, the wire 5 is inserted into the insertion part, and whether the wire 5 is in close contact with the peripheral wall of the wedge-shaped wire pressing part in the connector can be displayed through the mobile phone software or the handheld detection device and an alarm is given.

[0062] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A connector characterized by comprising: The application relates to a connector, which comprises the following components: a plug-in tube, which comprises a first plug-in tube (1) and a second plug-in tube (2), the first plug-in tube (1) and the second plug-in tube (2) are respectively provided with plug-in sections, the plug-in section of the first plug-in tube (1) and the plug-in section of the second plug-in tube (2) are plugged in an axial direction, the first plug-in tube (1) and the second plug-in tube (2) are respectively provided with a wire insertion hole (11) extending along the axial direction, and the diameter of the wire insertion hole (11) gradually decreases in a direction away from the plug-in section; a wedge-shaped wire pressing part (12) movably arranged in the wire insertion hole (11), the wedge-shaped wire pressing part (12) is provided with a wire passing cavity (121) along the axial direction, and one end of the wedge-shaped wire pressing part (12) away from the plug-in section comprises a wedge-shaped part capable of being contracted or expanded relative to the axial direction of the wire passing cavity (121), and the wedge-shaped part can be contracted under the pressing action of the hole wall of the wire insertion hole (11) to lock the wire (5); a spring (4) arranged between the wedge-shaped wire pressing part (12) of the first plug-in tube (1) and the wedge-shaped wire pressing part (12) of the second plug-in tube (2); a pressure sensor arranged on the cavity wall of the wire passing cavity (121) and flush with the surface of the cavity wall, used for detecting the compression force borne by the wire (5); wherein the first plug-in tube (1), the second plug-in tube (2) and the wedge-shaped wire pressing part (12) are all made of conductive materials; the wedge-shaped wire pressing part (12) is provided with a groove (122) on the cavity wall of the wire passing cavity (121), and the pressure sensor is arranged in the groove (122); a first through hole (123) is formed in the groove (122) along the radial direction of the wire passing cavity (121), and used for leading out the lead wire (131) of the pressure sensor; the connector further comprises a wire collecting tube (6), the wire collecting tube (6) is coaxially arranged in the plug-in section and located at one end of the wire insertion hole (11); the tube wall of the wire collecting tube (6) is provided with a cavity, a bearing is coaxially arranged in the cavity, and the outer ring (621) of the bearing is fixedly provided with a clock spring (61); the clock spring (61) is wound with the lead wire (131), and the two ends of the lead wire (131) are respectively axially led out from the tube wall of the wire collecting tube (6); the elastic force of the clock spring (61) is smaller than the locking force of the wedge-shaped wire pressing part (12) on the wire (5).

2. The connector of claim 1, wherein the outer peripheral wall of the wedge-shaped wire pressing part (12) is provided with a wire groove (124), and the lead wire (131) is led out from the end surface of the wedge-shaped wire pressing part (12) through the wire groove (124) after being led out from the groove (122).

3. The connector of claim 1, wherein the clock spring (61) is provided with two clock springs (61) which are spaced and arranged on the bearing.

4. The connector of claim 1, wherein the pressure sensor is arranged along the circumferential direction of the cavity wall of the wire passing cavity (121).

5. The connector of claim 4, wherein, the pressure sensor comprises a resistance strain sensor.

6. The connector of claim 1, wherein It also comprises a fixing member (31) which is arranged through the plug-in section and radially through the elastic member (4), and a wire hole is arranged in the fixing member (31) to communicate the inside and outside of the wire plug.

7. The connector of any one of claims 1-6, wherein, It also comprises an electric control board (80) and a power taking coil (81), the pressure sensor is electrically connected with the electric control board (80), and the power taking coil (81) is used for supplying power to the electric control board (80).

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