A high-voltage self-centering blind-mating floating connector and an assembly method thereof

Abstract

The present invention discloses a high-voltage self-centering blind-plug floating connector, which includes a plug and a socket. The plug includes a jack sleeve, one end of the jack sleeve connected to the inner conductor is insulated and connected to a hollow spherical column, an elastic ring is provided at the ball head end of the spherical column, a fastener is provided outside the spherical column, and the elastic ring is fixed in the fastener through a support; the socket includes a transfer plug, one end of the transfer plug is inserted into the first jack, and the other end is fixedly connected to the inner conductor of the cable. The spherical column in the plug can be rotated, swung and moved laterally, and the creepage distance in the plug and the socket is extended by a plastic sealing process, which greatly improves the withstand voltage level in a limited space. The assembly method of the connector includes: the steps of assembling the plug and the socket, and realizing the connection between the cable and the conductor by a plastic sealing process. The whole assembly process is simple, which ensures that the socket and the plug are firmly sealed while ensuring high voltage conduction.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to a high-voltage self-centering blind-plug floating connector and an assembling method thereof. Background Art

[0002] The high-voltage self-centering blind-plug floating connector is a connector that transmits instantaneous high voltage and high current. The normal operation in use is to push up the pre-installed integral light box with a plug and match it with the prefabricated socket at the upper end, thereby realizing the transmission of current and voltage.

[0003] Usually the main problems of high voltage connectors are:

[0004] 1. The floating part is a bellows or similar structure, and the elasticity of the bellows is used to achieve the axial expansion and contraction of the connector and the radial swing. However, this mechanism is not reliable enough in fatigue resistance due to the structure of the bellows itself. It is easy to have permanent deformation after use and needs manual correction. Otherwise, the connector will fail and be scrapped. At the same time, the radial and axial swing / floating range is not easy to control.

[0005] 2. Due to the limitation of the external dimensions and structure, the pressure range is limited. In order to meet the pressure standard, multi-layer sealing rings are used for sealing, which leads to problems such as excessive plugging and unplugging force of the connector and low pressure range.

[0006] 3. The lead-out cable lacks a proper fixing mechanism, and there is a risk of damaging the connector and cable during the swinging of the cable. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the present invention provides a high-voltage self-centering blind-mating floating connector with high pressure resistance and high reliability and an assembly method thereof.

[0008] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0009] Provided is a high-voltage self-centering blind-plug floating connector, which includes a plug and a socket. The plug includes a socket sleeve, one end of the socket sleeve is provided with a first socket, and the other end is connected to the inner conductor of the cable, and a plug shell is arranged outside the socket sleeve; one end of the socket sleeve connected to the inner conductor is insulated and connected to a hollow spherical column, an elastic ring is arranged at the ball head end of the spherical column, a fastener is arranged outside the spherical column, and the elastic ring is fixed in the fastener through a support;

[0010] The socket includes an adapter plug, one end of which is inserted into the first socket and the other end is fixedly connected to the inner conductor of the cable; the adapter plug is arranged in the socket shell, and the cable is fastened to the outside of the socket through a gland, and the end of the socket shell and the end of the plug shell are provided with a guide angle.

[0011] A method for assembling a high-voltage self-centering blind-mating floating connector comprises the following steps:

[0012] S1: Take a certain length of cable, remove the insulation layer, expose the inner conductor, insert the inner conductor into the jack sleeve, and press it tightly through the crimping process;

[0013] S2: Plastic-sealing the crimped jack sleeve to form a first molded plastic-sealed part;

[0014] S3: Take the spherical column, put the second retaining ring on the long column end of the spherical column, then buckle the spherical column into the top cover, and then put the first retaining ring on the spherical column;

[0015] S4: Place an elastic ring on the first retaining ring, screw the top cover locking nut onto the support, and then screw it into the top cover, and adjust the relative positions between the assembled parts through the top cover locking nut;

[0016] S5: insert the elastic support ring into the spherical column, then screw in the limit ring, clamp and position the elastic support ring, and then screw on the flange to form the first pre-component;

[0017] S6: inserting the first molded plastic seal into the plug housing, and then putting the soft sealing ring onto the cable until it is flush with the first molded plastic seal;

[0018] S7: Screw the plug locking nut into the plug housing, squeeze the soft sealing ring to lock it, and then put the second sealing ring on the plug housing to form a second pre-component;

[0019] S8: Screw the spherical column of the first pre-component into the predetermined position in the plug housing of the second pre-component to achieve threaded connection, and lock the first pre-component and the second pre-component into one through the flange, then install the floating spring collet into the support to the predetermined position, and then screw in the floating locking nut until the cable is positioned and clamped, and the plug assembly is completed;

[0020] S9: Take another cable of a certain length, remove the insulation layer, and expose the inner conductor; insert the inner conductor into the pin and press it tightly through the crimping process;

[0021] S10: Then plastic sealing is performed outside the pin to form a second molded plastic sealing part;

[0022] S11: Take the hole sleeve and screw it into the third socket, and make sure that the hole sleeve is flush with the end surface of the adapter plug, and then install it into the socket housing to a predetermined position;

[0023] S12: Put the first sealing ring into the corresponding position of the adapter plug, put the gasket onto the pin, and then insert the pin into the third socket until it is positioned;

[0024] S13: Put the soft sealing ring and the hard sealing ring into the predetermined position on the cable, then screw in the gland to lock it, tighten the nut of the gland to clamp the cable, and complete the assembly of the socket.

[0025] The beneficial effects of the present invention are as follows: this scheme is used to achieve high-voltage conduction, one end of the cable is connected to the jack sleeve through a crimping process, a jack is arranged inside the jack sleeve, and a jack structure is provided for the insertion of the plug and socket; and the adapter plug of the socket takes into account the dual functions of the pin and the connecting jack, the jack end can be inserted with the pin of the crimped lamp line, and the pin can cooperate with the jack of the plug to achieve high-voltage connection conduction of the plug and socket.

[0026] The spherical column in the plug can be rotated, swung and moved horizontally. The elastic support ring allows the spherical column to return to the correct position. When not under stress, the spherical column is in the center, which is convenient for plugging in. At the same time, the limit ring can accurately limit the swing angle of the spherical column, which provides a guarantee for the precise movement of the plug in X / Y / Z directions. The guide angle at the end of the plug can realize self-centering floating blind plugging between the plug and the socket. The creepage distance is extended through the plastic sealing process in the plug and the socket, which greatly improves the withstand voltage level in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the structure of the plug and the socket being plugged in.

[0028] Figure 2 A cross-sectional view of the plug.

[0029] Figure 3 A cross-sectional view of the socket.

[0030] Among them, 1. inner conductor, 2. cable, 3. floating locking nut, 4. floating spring collet, 5. locking screw, 6. support, 7. top cover locking nut, 8. elastic ring, 9. first retaining ring, 10. spherical column, 11. second retaining ring, 12. top cover, 13. elastic support ring, 14. limiting ring, 15. flange, 16. plug locking nut, 17. first soft sealing ring, 18. first molded plastic sealing part, 19. Plug shell, 20, jack sleeve, 21, socket shell, 22, adapter plug, 23, first sealing ring, 24, bolt, 25, reinforcement flange, 26, pin, 27, hole sleeve, 28, gasket, 29, third sealing ring, 30, second molded plastic sealing part, 31, second soft sealing ring, 32, hard sealing ring, 33, gland, 34, nut, 35, second jack, 36, annular insert, 37, second sealing ring. DETAILED DESCRIPTION

[0031] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0032] like Figures 1 to 3 As shown, the high-voltage self-centering blind-plug floating connector includes a plug and a socket, the plug includes a jack sleeve 20, one end of the jack sleeve 20 is provided with a first jack, the other end is connected to the inner conductor 1 of the cable 2, and a plug shell 19 is arranged outside the jack sleeve 20; the end of the jack sleeve 20 connected to the inner conductor 1 is insulated and connected to the hollow spherical column 10, the ball head end of the spherical column 10 is provided with an elastic ring 8, and a fastener is arranged outside the spherical column 10, and the elastic ring 8 is fixed in the fastener through a support 6.

[0033] The socket includes an adapter plug 22, one end of which is inserted into the first socket, and the other end is fixedly connected to the inner conductor 1 of the cable 2; the adapter plug 22 is arranged in the socket shell 21, and the cable 2 is fastened to the socket shell 21 through a cable gland 33, and a guide angle is arranged at the end of the socket shell 21 and the end of the plug shell 19.

[0034] This solution is used to achieve high-voltage conduction. One end of the cable 2 is connected to the jack sleeve 20 through a crimping process. A jack can be installed in the jack sleeve 20 to provide a jack structure for the plug and socket. The adapter plug 22 of the socket has both the pin 26 and the connecting jack. The pin 26 of the crimped lamp line can be inserted into the jack end, and the pin 26 can cooperate with the jack of the plug to achieve high-voltage connection and conduction of the plug and socket.

[0035] The spherical column 10 in the plug can be rotated, swung and moved horizontally. The elastic support ring 13 allows the spherical column 10 to return to the correct position. In the non-stressed state, the spherical column 10 is in the center position, which is convenient for plugging in. At the same time, the limit ring 14 can accurately limit the swing angle of the spherical column 10, which provides a guarantee for the precise movement of the plug in the three directions of X / Y / Z. Combined with the guide angle at the end of the plug, the guide angle realizes the self-centering floating blind plug between the plug and the socket. The creepage distance is extended through the plastic sealing process in the plug and the socket, which greatly improves the withstand voltage level in a limited space.

[0036] The end of the plug housing 19 is provided with a cylindrical step, and a second annular plug hole 35 is provided on the side wall of the cylindrical step. The end of the socket housing 21 is provided with an annular plug 36 inserted into the second plug hole 35, and the annular plug 36 is arranged between the adapter plug 22 and the socket housing 21. The annular plug 36 is inserted into the second plug hole 35 to increase the creepage path and the withstand voltage level.

[0037] A first sealing ring 23 is disposed outside the adapter plug 22, and a second sealing ring 37 is disposed outside the cylindrical step, so as to achieve sealing between the plug housing 19 and the socket housing 21 and cut off the creepage path.

[0038] The cable 2 is fixedly connected to the inner wall of the plug housing 19 through the plug locking nut 16, and the plug locking nut 16 is connected to the jack sleeve 20 through the first molded plastic sealing part 18, and the first molded plastic sealing part 18 is wrapped around the cable 2 and the jack sleeve 20. The first molded plastic sealing part 18 can fix the cable 2 while achieving internal sealing and extending the creepage distance.

[0039] A third socket is provided at the tail of the adapter plug 22, a pin 26 is provided in the third socket, and the pin 26 is connected to the third socket through a hole sleeve 27, the pin 26 is connected to the inner conductor 1 of the cable 2, and the third socket and the hole sleeve 27, the pin 26 and the hole sleeve 27 are all threadedly connected.

[0040] The pin 26 and the cable 2 are plastic-sealed with a second molded plastic sealing component 30, and the pin 26 is inserted into the second molded plastic sealing component 30 for fixed connection. A gasket 28 is arranged between the third plug hole and the second molded plastic sealing component 30, and the gasket 28 is sleeved on the outside of the pin 26; a third sealing ring 29 is arranged between the gasket 28 and the pin 26.

[0041] The second molded plastic sealing member 30 fixes the cable 2 and performs internal sealing at the same time, thereby extending the creepage distance and achieving a good sealing effect.

[0042] The fastener includes a top cover 12, which is sleeved on the outside of the spherical column 10, and a limit ring 14 and a flange 15 are arranged between one end of the top cover 12 and the plug housing 19, and the other end is fixedly connected to the support 6 through the top cover locking nut 7, and the support 6 is fixedly installed through the locking screw 5; one end of the limit ring 14 is sleeved on the sink of the top cover 12, and the other end is sleeved on the outside of the spherical column 10, and an elastic support ring 13 is arranged between the limit ring 14 and the spherical column 10. The limit ring 14 can accurately limit the swing angle of the spherical column 10.

[0043] The first retaining ring 9 and the second retaining ring 11 are respectively arranged on the left and right sides of the ball head of the spherical column 10, and the first retaining ring 9 and the second retaining ring 11 are both arranged in the top cover 12. A limit ring 14 and a floating locking nut 3 are arranged between the support 6 and the cable 2, and the floating locking nut is inserted between the support 6 and the limit ring 14 for fixed connection. Through the mutual cooperation between the top cover locking nut 7, the top cover 12 and the limit ring 14, the purposes of clamping and positioning the spherical column 10, the retaining ring and the elastic support ring 13 are achieved.

[0044] A first soft sealing ring 31 is arranged between the cable 2 and the socket shell 21, and a second soft sealing ring 17 is arranged between the cable 2 and the inner wall of the plug shell 19. The inner walls of the first soft sealing ring 31 and the second soft sealing ring 17 are both provided with a plurality of annular protrusions. The first soft sealing ring 31 and the second soft sealing ring 17 are sleeved on the outer wall of the cable 2, and a hard sealing ring 32 is arranged between the soft sealing ring and the gland 33.

[0045] The soft sealing ring cooperates with the plug locking nut 16 and the gland 33, as well as the hard sealing ring 32 to squeeze the soft sealing ring to achieve internal sealing and cut off the axial and radial creepage paths. At the same time, the high-pressure sealing effect is further improved through the soft sealing ring and the threaded design of the soft sealing ring surface (not limited to one side).

[0046] The socket housing 21 is provided with a metal reinforcing flange 25 which is locked by bolts 24 to improve the problem of insufficient mechanical strength and poor locking of the plastic flange 15 of the socket insulation housing, thereby solving the socket installation problem.

[0047] The assembly method of the high-voltage self-centering blind-mating floating connector comprises the following steps:

[0048] S1: Take a certain length of cable 2, remove the insulation layer, expose the inner conductor 1, insert the inner conductor 1 into the jack sleeve 20, and press it tightly through a crimping process;

[0049] S2: Plastic-sealing the crimped jack sleeve 20 to form a first molded plastic-sealed part 18;

[0050] S3: Take the spherical column 10, put the second retaining ring 11 on the long column end of the spherical column 10, then buckle the spherical column 10 into the top cover 12, and then put the first retaining ring 9 on the spherical column 10;

[0051] S4: Place the elastic ring 8 on the first retaining ring 9, screw the top cover locking nut 7 onto the support 6, and then screw it into the top cover 12, and adjust the relative positions between the assembled parts through the top cover locking nut 7;

[0052] S5: insert the elastic support ring 13 into the spherical column 10, then screw in the limiting ring 14, clamp and position the elastic support ring 13, and then screw on the flange 15 to form a first pre-component;

[0053] S6: insert the first molded plastic sealing part 18 into the plug housing 19, and then put the soft sealing ring onto the cable 2 until it is flush with the first molded plastic sealing part 18;

[0054] S7: Screw the plug locking nut 16 into the plug housing 19, squeeze the soft sealing ring to lock it, and then put the second sealing ring 37 on the plug housing 19 to form a second pre-component;

[0055] S8: Screw the spherical column 10 of the first pre-component into the predetermined position in the plug housing 19 of the second pre-component to achieve threaded connection, and lock the first pre-component and the second pre-component into one through the flange 15, then install the floating spring chuck 4 into the support 6 to the predetermined position, and then screw in the floating locking nut 3 until the cable 2 is positioned and clamped, and the plug assembly is completed;

[0056] S9: Take another cable 2 of a certain length, remove the insulation layer, and expose the inner conductor 1; insert the inner conductor 1 into the pin 26 and press it tightly through a crimping process;

[0057] S10: Then plastic sealing is performed outside the pin 26 to form a second molded plastic sealing part 30;

[0058] S11: Take the hole sleeve 27 and screw it into the third jack, and make sure that the hole sleeve 27 is flush with the end surface of the adapter plug 22, and then install it into the socket housing 21 to a predetermined position;

[0059] S12: insert the first sealing ring 23 into the corresponding position of the adapter plug 22, insert the gasket 28 onto the plug pin 26, and then insert the plug pin 26 into the third plug hole until it is positioned;

[0060] S13: Insert the soft sealing ring and the hard sealing ring 32 into the predetermined position on the cable 2, then screw in the gland 33 to lock it, tighten the nut 34 of the gland 33 to clamp the cable 2, and complete the assembly of the socket.

[0061] Turn the high-voltage self-centering blind-plug floating plug onto the light box, install the high-voltage self-centering blind-plug floating socket, push the light box to insert the high-voltage self-centering blind-plug floating plug into the high-voltage self-centering blind-plug floating socket to achieve high-voltage conduction connection function, and the high-voltage self-centering blind-plug floating plug can also be directly inserted into the high-voltage self-centering blind-plug floating socket to achieve high-voltage conduction. The whole assembly process is simple, ensuring that the socket and plug are firmly sealed while ensuring high-voltage conduction.

Claims

1. A high-voltage self-centering blind-mating floating connector, characterized in that: It comprises a plug and a socket, the plug comprising a socket sleeve (20), one end of the socket sleeve (20) being provided with a first socket, the other end being connected to the inner conductor (1) of the cable (2), and a plug shell (19) being arranged outside the socket sleeve (20); the end of the socket sleeve (20) connected to the inner conductor (1) being insulatedly connected to a hollow spherical column (10), the ball head end of the spherical column (10) being provided with an elastic ring (8), the outside of the spherical column (10) being provided with a fastener, and the elastic ring (8) being fixed in the fastener via a support (6); The socket comprises an adapter plug (22), one end of which is inserted into the first socket, and the other end of which is fixedly connected to the inner conductor (1) of the cable (2); the adapter plug (22) is arranged in a socket housing (21), and the cable (2) is fastened to the socket housing (21) via a cable gland (33); and a guide angle is provided at an end of the socket housing (21) and an end of the plug housing (19).

2. The high-voltage self-centering blind-mating floating connector according to claim 1, characterized in that: The end of the plug housing (19) is provided with a cylindrical step, and a circle of annular second plug holes (35) are provided on the side wall of the cylindrical step. The end of the socket housing (21) is provided with an annular insert (36) inserted into the second plug hole (35), and the annular insert (36) is arranged between the adapter plug (22) and the socket housing (21).

3. The high-voltage self-centering blind-mating floating connector according to claim 2, characterized in that: A first sealing ring (23) is arranged outside the adapter plug (22), and a second sealing ring (37) is arranged outside the cylindrical step.

4. The high-voltage self-centering blind-mating floating connector according to claim 1, characterized in that: The cable (2) is fixedly connected to the inner wall of the plug housing (19) via a plug locking nut (16), and the plug locking nut (16) is connected to the jack sleeve (20) via a first molded plastic sealing component (18), and the first molded plastic sealing component (18) is wrapped around the cable (2) and the jack sleeve (20).

5. The high-voltage self-centering blind-mating floating connector according to claim 1, characterized in that: The fastener comprises a top cover (12), the top cover (12) is sleeved on the outside of the spherical column (10), a limit ring (14) and a flange (15) are arranged in sequence between one end of the top cover (12) and the plug housing (19), and the other end is fixedly connected to the support (6) through a top cover locking nut (7); one end of the limit ring (14) is sleeved on the sink of the top cover (12), and the other end is sleeved on the outside of the spherical column (10), and an elastic support ring (13) is arranged between the limit ring (14) and the spherical column (10).

6. The high-voltage self-centering blind-mating floating connector according to claim 5, characterized in that: A first retaining ring (9) and a second retaining ring (11) are respectively arranged on the left and right sides of the ball head of the spherical column (10); the first retaining ring (9) and the second retaining ring (11) are both arranged in a top cover (12); a limit ring (14) and a floating locking nut (3) are arranged between the support (6) and the cable (2); the floating locking nut (3) is inserted between the support (6) and the limit ring (14) to be fixedly connected.

7. The high-voltage self-centering blind-mating floating connector according to claim 1, characterized in that: A third jack is provided at the rear of the adapter plug (22), a pin (26) is provided in the third jack, and the pin (26) is connected to the third jack via a hole sleeve (27), the pin (26) is connected to the inner conductor (1) of the cable (2), and the third jack and the hole sleeve (27) as well as the pin (26) and the hole sleeve (27) are all connected via threads.

8. The high-voltage self-centering blind-mating floating connector according to claim 7, characterized in that: The plug pin (26) and the cable (2) are externally plastic-sealed with a second molded plastic sealing member (30), the plug pin (26) is inserted into the second molded plastic sealing member (30) and fixedly connected, a gasket (28) is provided between the third plug hole and the second molded plastic sealing member (30), and the gasket (28) is sleeved outside the plug pin (26); a third sealing ring (29) is provided between the gasket (28) and the plug pin (26).

9. The high-voltage self-centering blind-mating floating connector according to claim 1, characterized in that: A first soft sealing ring (31) is arranged between the cable (2) and the socket housing (21), and a second soft sealing ring (17) is arranged between the cable (2) and the inner wall of the plug housing (19). The inner walls of the first soft sealing ring (31) and the second soft sealing ring (17) are both provided with a plurality of annular protrusions. The first soft sealing ring (31) and the second soft sealing ring (17) are sleeved on the outer wall of the cable (2), and a hard sealing ring (32) is arranged between the soft sealing ring and the cable gland (33).

10. An assembly method of a high-voltage self-centering blind-mating floating connector according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Take a cable (2) of a set length, remove the insulation layer, expose the inner conductor (1), insert the inner conductor (1) into the jack sleeve (20), and press it tightly through a crimping process; S2: Plastic-sealing the crimped jack sleeve (20) to form a first molded plastic-sealed part (18); S3: Put the second retaining ring (11) on the long column end of the spherical column (10), then buckle the spherical column (10) into the top cover (12), and then put the first retaining ring (9) on the spherical column (10); S4: placing an elastic ring (8) on the first retaining ring (9), screwing the top cover locking nut (7) onto the support (6), and then screwing it into the top cover (12), and adjusting the relative positions of the assembled parts through the top cover locking nut (7); S5: insert the elastic support ring (13) into the spherical column (10), then screw in the limiting ring (14), clamp and position the elastic support ring (13), and then screw on the flange (15) to form a first pre-component; S6: inserting the first molded plastic sealing part (18) into the plug housing (19), and then inserting the soft sealing ring onto the cable (2) until it is flush with the first molded plastic sealing part (18); S7: screwing the plug locking nut (16) into the plug housing (19), squeezing the soft sealing ring to lock it, and then inserting the second sealing ring (37) on the plug housing (19) to form a second pre-assembled component; S8: Screw the spherical column (10) of the first pre-component into a predetermined position in the plug housing (19) of the second pre-component, and lock the first pre-component and the second pre-component together through the flange (15), then install the floating spring clamp (4) into the support (6) to the predetermined position, and then screw the floating locking nut (3) until the cable (2) is positioned and clamped, and the plug assembly is completed; S9: Take another cable (2) of a set length, remove the insulation layer, and expose the inner conductor (1); insert the inner conductor (1) into the pin (26), and press it tightly through a crimping process; S10: then performing plastic sealing on the outside of the pin (26) to form a second molded plastic sealing part (30); S11: Take the hole sleeve (27) and screw it into the third plug hole, and make the hole sleeve (27) and the end surface of the adapter plug (22) flush, and then install it into the socket housing (21) to a predetermined position; S12: insert the first sealing ring (23) into the corresponding position of the adapter plug (22), insert the washer (28) onto the plug pin (26), and then insert the plug pin (26) into the third plug hole; S13: Insert the soft sealing ring and the hard sealing ring (32) into the predetermined position on the cable (2), then screw in the gland (33) to lock it, and tighten the nut (34) of the gland (33) to clamp the cable (2), thereby completing the assembly of the socket.

Images