Connector

Abstract

The utility model relates to a connector which comprises a shell, a tube shell, a tail tube and an end cap. The interior of the shell penetrates in the insertion direction. At least the rear pipe opening of the pipe shell is contained in the outer shell. The tail pipe comprises a first pipe section and a second pipe section which are connected. The outer diameter of the first pipe section corresponds to the inner diameter of the shell, and a port of the first pipe section is opposite to the rear pipe opening. The outer circumferential face of the second pipe section and the inner circumferential face of the shell are arranged at intervals. The end cap has an inner cylinder portion. The inner cylinder part is provided with an external thread, and the inner cylinder part is arranged on the outer peripheral side of the second pipe section and on the inner peripheral side of the shell. The inner cylinder part is in threaded fit with the shell. The end cap and the tail pipe form an abutting fit capable of limiting the tail pipe from exiting the shell. The end cap is in threaded connection with the shell through the inner cylinder part, and the inner cylinder part is accommodated in the shell, so that the end cap cannot be sleeved on the peripheral side of the shell, the outer diameter of the connector is equal to the outer diameter of the shell, the outer diameter of the connector is prevented from being increased, and the storage, transportation and use of the connector are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of connecting devices, and particularly to a connector. Background Art

[0002] A connector is a device used to achieve electrical docking between different devices. The application of connectors can improve the efficiency of electrical docking operations between different devices, and they are currently widely used in fields such as automobiles, communications, consumer electronics, data processing, and industrial machinery.

[0003] In some traditional connectors, there are a shell, a tail pipe, and an outer shell. Contact terminals and insulators are assembled inside the shell. One end of the shell is docked with one end of the tail pipe inside the outer shell. To maintain the position stability of the docking part between the tail pipe and the shell, the outer peripheral surface of the tail pipe needs to be in contact with the inner wall surface of the outer shell to prevent the tail pipe from moving radially and avoid affecting the sealing performance at the docking part between the shell and the tail pipe. Since the space between the outer peripheral surface of the tail pipe and the inner wall surface of the outer shell is limited, when using an end cap to lock the axial position of the tail pipe, the end cap needs to be threadedly sleeved on the outer periphery of the outer shell. Since the end cap protrudes relative to the outer surface of the outer shell, the outer diameter of the connector is increased, which has a certain adverse impact on the storage, transportation, and use of the connector. Summary of the Utility Model

[0004] Based on this, the present utility model provides a connector that can solve or at least mitigate the above technical problems.

[0005] The present utility model provides a connector, comprising:

[0006] An outer shell, which is provided with a through hole along the insertion direction inside;

[0007] A shell, having a front pipe orifice and a rear pipe orifice oppositely arranged along the insertion direction; at least the rear pipe orifice of the shell is accommodated in the outer shell;

[0008] A tail pipe, comprising a first pipe section and a second pipe section connected to each other; the second pipe section and the first pipe section are arranged in sequence along the insertion direction; the outer diameter of the first pipe section corresponds to the inner diameter of the outer shell, and the port of the first pipe section is oppositely arranged with the rear pipe orifice; there is a gap between the outer peripheral surface of the second pipe section and the inner peripheral surface of the outer shell; and

[0009] An end cap, having an inner cylinder part; the inner cylinder part is provided with an external thread; the inner cylinder part is arranged on the outer peripheral side of the second pipe section and on the inner peripheral side of the outer shell; the inner cylinder part is in threaded cooperation with the outer shell; the end cap and the tail pipe form an abutting fit that can limit the tail pipe from withdrawing from the outer shell.

[0010] In the above-mentioned connector, since the outer diameter of the first pipe section corresponds to the inner diameter of the housing, and the outer peripheral surface of the first pipe section is attached to the inner peripheral surface of the housing, the first pipe section is in a stable position relative to the housing in the radial direction. In addition, a gap is provided between the outer peripheral surface of the second pipe section and the inner peripheral surface of the housing, and an annular gap space is formed between the second pipe section and the housing. Therefore, the inner cylinder part of the end cap can be inserted into the housing. By adjusting the position of the end cap relative to the tail pipe through threads, the end cap abuts against the tail pipe and restricts the tail pipe from withdrawing from the housing. Since the end cap is threadedly connected to the housing through the inner cylinder part and the inner cylinder part is accommodated in the housing, the end cap will not be sleeved on the outer peripheral side of the housing, making the outer diameter of the connector equal to the outer diameter of the housing, avoiding an increase in the outer diameter of the connector, and being beneficial to the storage, transportation and use of the connector.

[0011] In one embodiment, the first pipe section includes a pipe body part communicating with the second pipe section and an outer ring part connected to the pipe body part; the opening of the pipe body part is disposed opposite to the rear pipe orifice; the outer ring part surrounds the outer periphery of the pipe body part and protrudes relative to the outer peripheral surface of the pipe body part; the outer ring part abuts against the inner peripheral surface of the housing.

[0012] In one embodiment, one of the outer peripheral side of the pipe shell and the inner peripheral side of the housing is formed with a first positioning groove, and the other is connected with a positioning rib; the positioning rib is accommodated in the first positioning groove.

[0013] In one embodiment, the outer peripheral side of the pipe shell is provided with the first positioning groove; one end of the internal space of the first positioning groove extends towards the front pipe orifice; along the direction close to the front pipe orifice, the width of the first positioning groove in the circumferential direction of the pipe shell changes in an expanding manner; the inner peripheral side of the housing is provided with the positioning rib; the positioning rib protrudes relative to the inner peripheral surface of the housing.

[0014] In one embodiment, the end cap further includes an outer cap part connected to the inner cylinder part; the outer diameter of the outer cap part is larger than the outer diameter of the inner cylinder part.

[0015] In one embodiment, a sealing member is further included; a stepped transition is formed between the outer cap part and the inner cylinder part and a sealing stepped surface is formed in the circumferential direction; the sealing member abuts against the sealing stepped surface and the tail end of the housing in the circumferential direction.

[0016] In one embodiment, a wire clamping sleeve is further included; the wire clamping sleeve is inserted into the other port of the tail pipe.

[0017] In one embodiment, the other port of the tail pipe is formed by surrounding with a plurality of claw pieces, and the plurality of claw pieces are arranged at intervals in the circumferential direction; the wire clamping sleeve is clamped on the inner circumferential side of the plurality of claw pieces; a contraction guiding surface is formed on the inner circumferential side of the end cap; the contraction guiding surface narrows and changes in the reverse direction of the insertion direction; the free ends of the claw pieces abut against the contraction guiding surface.

[0018] In one embodiment, a second positioning groove is formed on one of the outer circumferential side of the tail pipe and the inner circumferential side of the housing, and a positioning rib is connected to the other; the positioning rib is received in the second positioning groove.

[0019] In one embodiment, a second positioning groove is provided on the outer circumferential side of the tail pipe; one end of the internal space of the second positioning groove extends towards one port of the tail pipe; a positioning rib is provided on the inner circumferential side of the housing; the positioning rib protrudes relative to the inner circumferential surface of the housing; along the direction close to one port of the tail pipe, the width of the second positioning groove in the circumferential direction of the tail pipe expands and changes. Brief Description of the Drawings

[0020] Figure 1 A perspective schematic view of a connector according to an embodiment of the present application.

[0021] Figure 2 is Figure 1 A perspective schematic view of the connector shown in another angle.

[0022] Figure 3 is Figure 1 A perspective sectional view of the connector shown.

[0023] Figure 4 is Figure 1 An exploded schematic view of the connector shown.

[0024] Figure 5 is Figure 1 An exploded schematic view of the connector shown in another angle.

[0025] Figure 6 is Figure 5 A perspective sectional view of the connector shown.

[0026] Figure 7 is Figure 6 An enlarged view of part A of the connector shown.

[0027] Reference numerals: 100, connector; 20, insulator; 30, contact terminal; 40, housing; 41, front end; 42, tail end; 43, first limiting surface; 44, positioning rib; 50, shell; 51, front pipe orifice; 52, rear pipe orifice; 53, first positioning groove; 60, tail pipe; 61a / 61b, port; 62, second limiting surface; 63, wire clamping sleeve; 64, claw; 641, free end; 65, second positioning groove; 66, first pipe section; 661, pipe body part; 662, outer ring part; 67, second pipe section; 70, end cap; 71, sealing stepped surface; 72, shrinkage guiding surface; 73, inner cylinder part; 74, outer cap part; 80, seal; F1, insertion direction. Detailed implementation manners

[0028] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0029] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] The technical solutions provided by the embodiments of the present application will be introduced below with reference to the accompanying drawings.

[0032] Combined with Figures 1 to 7As shown, the present application provides a connector 100. In some embodiments, the connector 100 is a device for achieving electrical docking between different devices. In some other embodiments, the connector 100 is used in the same device to achieve electrical docking between different electrical modules. In some embodiments, the connector 100 can be fixed to a device, a panel or a circuit board. In some other embodiments, the connector 100 is installed at one end of an electrical cable.

[0033] In some embodiments, in combination with Figure 3 and Figure 4 as shown, the connector 100 includes a plurality of contact terminals 30 and an insulator 20. The plurality of contact terminals 30 are inserted into the insulator 20. The insulator 20 covers the outer peripheral surface of the contact terminals 30 to keep insulation between different contact terminals 30.

[0034] In some embodiments, in combination with Figure 1 and Figure 3 as shown, one end of the contact terminal 30 is used to achieve electrical docking with other connectors 100, and the other end of the contact terminal 30 is exposed outside the insulator 20 and connected to the conductive part of the electrical cable.

[0035] In some embodiments, in combination with Figure 3 and Figure 5 as shown, the connector 100 includes: a housing 40, a shell 50, a tail pipe 60 and an end cap 70. The inside of the housing 40 is provided with a through hole along the insertion direction F1. The shell 50 is provided with a front pipe orifice 51 and a rear pipe orifice 52 oppositely along the insertion direction F1. At least the rear pipe orifice 52 of the shell 50 is received in the housing 40. The tail pipe 60 includes a first pipe section 66 and a second pipe section 67 connected to each other. The second pipe section 67 and the first pipe section 66 are arranged in sequence along the insertion direction F1. The outer diameter of the first pipe section 66 corresponds to the inner diameter of the housing 40, and the port 61a of the first pipe section 66 is arranged opposite to the rear pipe orifice 52. The outer peripheral surface of the second pipe section 67 is spaced from the inner peripheral surface of the housing 40. The end cap 70 has an inner cylinder part 73. The inner cylinder part 73 is provided with an external thread, and the inner cylinder part 73 is arranged on the outer peripheral side of the second pipe section 67 and on the inner peripheral side of the housing 40. The inner cylinder part 73 is in threaded cooperation with the housing 40. The end cap 70 and the tail pipe 60 form an abutting fit capable of restricting the tail pipe 60 from withdrawing from the housing 40.

[0036] Specifically, the insulator 20 and the contact terminals 30 of the connector 100 are positioned and accommodated in the housing 50. The electrical cable is inserted into the tail pipe 60 from the port 61b of the second pipe section 67 and connected to the contact terminals 30. Since the outer diameter of the first pipe section 66 corresponds to the inner diameter of the housing 40, the outer peripheral surface of the first pipe section 66 is attached to the inner peripheral surface of the housing 40, so that the first pipe section 66 is in a stable position relative to the housing 40 in the radial direction. In addition, a gap is provided between the outer peripheral surface of the second pipe section 67 and the inner peripheral surface of the housing 40, and an annular gap space is formed between the second pipe section 67 and the housing 40. Therefore, the inner cylinder portion 73 of the end cap 70 can be accommodated in the housing 40. By adjusting the position of the end cap 70 relative to the tail pipe 60 by means of threads, the end cap 70 abuts against the tail pipe 60 and restricts the tail pipe 60 from withdrawing from the housing 40. Since the end cap 70 is threadedly connected to the housing 40 through the inner cylinder portion 73 and the inner cylinder portion 73 is accommodated in the housing 40, the end cap 70 will not be sleeved on the outer peripheral side of the housing 40, making the outer diameter of the connector 100 equal to the outer diameter of the housing 40, avoiding an increase in the outer diameter of the connector 100 and facilitating the storage, transportation and use of the connector 100.

[0037] In some embodiments, as shown in combination with Figure 3 and Figure 5 , the first pipe section 66 includes a pipe body portion 661 communicating with the second pipe section 67 and an outer ring portion 662 connected to the pipe body portion 661. The opening of the pipe body portion 661 is disposed opposite to the rear pipe orifice 52. The outer ring portion 662 surrounds the outer periphery of the pipe body portion 661 and protrudes relative to the outer peripheral surface of the pipe body portion 661. The outer ring portion 662 abuts against the inner peripheral surface of the housing 40. Specifically, the outer diameter of the pipe body portion 661 may be close to or the same as the outer diameter of the second pipe section 67. The first pipe section 66 forms a radial limiting fit with the inner peripheral surface of the housing 40 through the outer ring portion 662 surrounding the pipe body portion 661, thereby restricting the radial movement of the first pipe section 66. In some other embodiments, when the outer ring portion 662 is not provided on the outer side of the pipe body portion 661, the outer diameter and the ring width of the pipe body portion 661 may be adjusted so that the outer peripheral surface of the pipe body portion 661 abuts against the inner peripheral surface of the housing 40, thereby restricting the radial movement of the first pipe section 66.

[0038] Specifically, during the assembly process of the traditional connector 100, the contact terminals 30 and the insulator 20 are generally first assembled into a shell to form a terminal module. Subsequently, the terminal module is inserted from the front end 41 of the housing, and the tail tube is inserted from the rear end 42 of the housing. After the end of the shell is threadedly butted and tightened with the end of the tail tube within the housing, the terminal module and the tail tube are fixed relative to the housing 40. However, the terminal module generally includes a plurality of contact terminals 30. A certain spacing distance needs to be maintained between different contact terminals 30 to meet the insulation requirements. Otherwise, discharge may occur between the contact terminals 30. When the internal space size of the housing is fixed, whether the end of the shell is threaded through the end of the tail tube or the end of the tail tube is threaded through the end of the shell, it will cause limitations on the distribution space of the contact terminals 30, making it difficult to ensure the spacing distance between the contact terminals 30 and the insulation between the contact terminals 30.

[0039] In some embodiments, as shown in Figure 3 and Figure 4 , the housing 40 is provided with a front end 41 and a rear end 42 along the insertion direction F1. A first limiting surface 43 is formed on the inner peripheral side of the housing 40, and the first limiting surface 43 faces the rear end 42. The outer peripheral side of the shell 50 abuts against the first limiting surface 43. The port 61a of the first pipe section 66 is received in the housing 40 and abuts against the rear pipe opening 52. The tail tube 60 is provided with a second limiting surface 62, and the second limiting surface 62 faces away from the shell 50. The end cap 70 is spaced from the rear pipe opening 52 along the insertion direction F1. The end cap 70 abuts against the second limiting surface 62.

[0040] In the present application, since the end cap 70 is threadedly nested and fitted with the housing 40, and the second limiting surface 62 of the tail tube 60 faces away from the shell 50, when the end cap 70 is tightened relative to the housing 40 in a threaded manner, the end cap 70 pushes against the second limiting surface 62 of the tail tube 60 along the insertion direction F1, causing the tail tube 60 to abut against the shell 50. Since the first limiting surface 43 is formed on the inner side of the housing 40 and the first limiting surface 43 faces the rear end 42, the shell 50 is thus abutted by the first limiting surface 43 on one side and abutted by one port 61a of the tail tube 60 on the other side, so that the shell 50 and the tail tube 60 can be in a stable position in the housing 40. Since the end cap 70 is spaced from the rear pipe opening 52 along the insertion direction F1, the end cap 70 does not limit the outer peripheral space at the abutting portion of the shell 50 and the tail tube 60. The rear end 42 opening of the shell 50 and one port 61a of the tail tube 60 abut against each other in the housing 40, so their diameters are close and no nested fit is formed. Since the inner diameters of the shell 50 and the tail tube 60 are close, the cross-sectional size of the maximum distribution space of the contact terminals 30 is not affected by the nested fit, and a relatively large spacing distance can be formed between different contact terminals 30, which is beneficial to improving the insulation between the contact terminals 30.

[0041] In some embodiments, the length direction of the contact terminal 30 is parallel to the insertion direction F1. The interval direction between different contact terminals 30 is perpendicular to the insertion direction F1. The cross-section of the distribution space of the contact terminals 30 is perpendicular to the insertion direction F1.

[0042] In some embodiments, in combination with Figure 5 as shown, the second limiting surface 62 is formed on the outer peripheral side of the tail pipe 60. The second limiting surface 62 is arranged at an interval from the other port 61b of the tail pipe 60. Specifically, the second limiting surface 62 is arranged in abutment with one end of the inner cylinder part 73. In some embodiments, the second limiting surface 62 is the surface of the outer ring part 662 facing away from the pipe shell 50.

[0043] In some other embodiments, in combination with Figure 3 as shown, the other port 61b of the tail pipe 60 is received in the end cap 70. In some embodiments, the end face of the other port 61b of the tail pipe 60 serves as the second limiting surface and abuts against the inner wall of the end cap 70.

[0044] In some embodiments, when the connector 100 is used as a socket, the housing 40 can be designed with a corresponding shape according to the structure of the installation position to fix the connector 100.

[0045] In some embodiments, in combination with Figure 4 and Figure 5 as shown, one of the outer peripheral side of the pipe shell 50 and the inner peripheral side of the housing 40 is formed with a first positioning groove 53, and the other is connected with a positioning rib 44. The positioning rib 44 is received in the first positioning groove 53. Specifically, when the positioning rib 44 is received in the first positioning groove 53, the pipe shell 50 is at a limited angle relative to the housing 40 in the outer peripheral direction, so that during the docking process of the connector 100 with other interface devices, it is avoided that the docking of the connector 100 with other interface devices cannot be smoothly achieved due to the unstable position of the contact terminal 30 relative to the housing 40.

[0046] In some embodiments, in combination with Figure 4 and Figure 5 as shown, the outer peripheral side of the pipe shell 50 is provided with a first positioning groove 53. One end of the internal space of the first positioning groove 53 extends forward to the front pipe orifice 51. The inner peripheral side of the housing 40 is provided with a positioning rib 44. The positioning rib 44 protrudes relative to the inner peripheral surface of the housing 40. Specifically, during the process of assembling the pipe shell 50, the pipe shell 50 is inserted into the housing 40 from the tail end 42. When the pipe shell 50 moves in the housing 40 close to the front end 41 of the housing 40, by adjusting the angle of the pipe shell 50 relative to the housing 40, the positioning rib 44 can be made to enter the first positioning groove 53, and thereafter, the angle of the pipe shell 50 relative to the housing 40 is restricted.

[0047] In some embodiments, in combination withFigure 6 As shown, the positioning rib 44 is integrally provided with the housing 40, so that the assembly of the positioning rib 44 can be simplified. In some embodiments, the positioning rib 44 is in a straight strip shape, and the length direction of the positioning rib 44 is parallel to the relative direction between the front end 41 and the tail end 42. In some embodiments, the width of the positioning rib 44 along the inner circumferential direction of the housing 40 corresponds to the minimum width of the first positioning groove 53 along the inner circumferential direction of the housing 40, thereby improving the accuracy of the relative angle between the housing 40 and the tube shell 50.

[0048] In some embodiments, in combination with Figure 4 and Figure 5 As shown, along the direction close to the front pipe orifice 51, the width of the first positioning groove 53 along the outer circumferential direction of the tube shell 50 changes in an expanding manner. Specifically, the inner space of the first positioning groove 53 extends to one end of the front pipe orifice 51 and has a larger width, so that it is beneficial for one end of the positioning rib 44 to enter the first positioning groove 53. As the tube shell 50 moves closer to the front end 41 of the housing 40, the positioning rib 44 is gradually guided by the inclined edge of the first positioning groove 53 into a narrower section of the first positioning groove 53, thereby reducing the assembly difficulty and maintaining an accurate relative angle between the housing 40 and the tube shell 50.

[0049] In some other embodiments, a first positioning groove 53 is formed on the inner circumferential side of the housing 40. The first positioning groove 53 is recessed relative to the inner circumferential surface of the housing 40. A positioning rib 44 is connected to the outer circumferential side of the tube shell 50. The positioning rib 44 protrudes relative to the outer circumferential surface of the tube shell 50.

[0050] In some embodiments, in combination with Figure 4 and Figure 5 As shown, a second positioning groove 65 is formed on one of the outer circumferential side of the tail pipe 60 and the inner circumferential side of the housing 40, and a positioning rib 44 is connected to the other. The positioning rib 44 is received in the second positioning groove 65. Specifically, when the positioning rib 44 is received in the second positioning groove 65, the tail pipe 60 is in a limited angle relative to the housing 40 in the outer circumferential direction, so that the tail pipe 60 can be prevented from rotating with the end cap 70, and the separation of the electrical cable from the contact terminal 30 caused by the rotation of the electrical cable driven by the tail pipe 60 can be avoided.

[0051] In some embodiments, in combination with Figure 4 and Figure 5As shown, a second positioning groove 65 is provided on the outer peripheral side of the tail pipe 60. One end of the inner space of the second positioning groove 65 extends towards one port 61a of the tail pipe 60. A positioning rib 44 is provided on the inner peripheral side of the outer shell 40. The positioning rib 44 protrudes relative to the inner peripheral surface of the outer shell 40. Specifically, during the process of assembling the tail pipe 60, the tail pipe 60 is inserted into the outer shell 40 from the tail end 42. When the tail pipe 60 moves in the outer shell 40 and approaches the front end 41 of the outer shell 40, by adjusting the angle of the tail pipe 60 relative to the outer shell 40, the positioning rib 44 can be made to enter the second positioning groove 65. Thereafter, the angle of the tail pipe 60 relative to the outer shell 40 is restricted. The tail pipe 60 moves to abut against the pipe shell 50 in the outer shell 40 at a limited angle.

[0052] In some embodiments, in combination Figure 4 with Figure 5 As shown, along the direction approaching one port 61a of the tail pipe 60, the width of the second positioning groove 65 in the circumferential direction of the tail pipe 60 changes in an expanding manner. Specifically, one end of the inner space of the second positioning groove 65 extending towards the port 61a of the tail pipe 60 has a larger width, which is thus conducive to one end of the positioning rib 44 entering the second positioning groove 65. As the tail pipe 60 moves closer to the front end 41 of the outer shell 40, the positioning rib 44 is gradually guided by the inclined edge of the second positioning groove 65 into a narrower section of the second positioning groove 65, thereby reducing the assembly difficulty and maintaining an accurate relative angle between the outer shell 40 and the tail pipe 60.

[0053] In some embodiments, the same positioning rib 44 is sequentially received in the first positioning groove 53 and the second positioning groove 65 along the direction from the front end 41 to the tail end 42. In some embodiments, when assembling the tail pipe 60, the other end of the tail pipe 60 can be first inserted into the end cap 70. Then, by holding the end cap 70 by hand, one port 61a of the tail pipe 60 is inserted into the tail end 42 of the outer shell 40. By gently twisting the end cap 70, when it is found that the tail pipe 60 can smoothly penetrate into the outer shell 40, it can be confirmed that one end of the positioning rib 44 has been aligned with one end of the second positioning groove 65 extending to the port 61a of the tail pipe 60, and the positioning rib 44 is guided by the inclined edge of the second positioning groove 65 into a narrower section of the second positioning groove 65. Thereafter, the external thread of the end cap 70 is coupled with the internal thread of the outer shell 40, and the end cap 70 can abut against the tail pipe 60 by tightening with the thread. Since one end of the inner space of the second positioning groove 65 extending towards the port 61a of the tail pipe 60 has a larger width, it is not necessary to first separately align and assemble the tail pipe 60, but the tail pipe 60 and the end cap 70 are installed simultaneously, thereby improving the assembly efficiency of the connector 100.

[0054] In some other embodiments, a second positioning groove 65 is formed on the inner peripheral side of the outer shell 40. The second positioning groove 65 is recessed relative to the inner peripheral surface of the outer shell 40. A positioning rib 44 is connected to the outer peripheral side of the tail pipe 60. The positioning rib 44 protrudes relative to the outer peripheral surface of the tail pipe 60.

[0055] In some embodiments, as shown in Figure 3 FIG. 5, the insulator 20 can be positioned and received in the tube shell 50 by snap connection. In some other embodiments, the insulator 20 can also be positioned and received in the tube shell 50 by interference fit with the inner peripheral surface of the tube shell 50. In still some other embodiments, the insulator 20 can also be positioned and received in the tube shell 50 by being threadedly connected to the inner peripheral side of the tube shell 50.

[0056] In some embodiments, as shown in Figure 3 and Figure 5 FIG. 6, the connector 100 further includes a wire clamping sleeve 63. The wire clamping sleeve 63 is inserted into the other port 61b of the tail pipe 60. Specifically, when the electrical cable is inserted into the tail pipe 60 from the other port 61b of the tail pipe 60, the wire clamping sleeve 63 fits on the outer peripheral surface of the electrical cable, and the outer peripheral side of the wire clamping sleeve 63 abuts against the inner peripheral edge of the other port 61b of the tail pipe 60. There is a large frictional force between the wire clamping sleeve 63 and the outer periphery of the electrical cable, so as to prevent the electrical cable from loosening from the tail pipe 60 under the action of the pulling force.

[0057] In some embodiments, as shown in Figure 5 FIG. 7, the other port 61b of the tail pipe 60 is formed by a plurality of claw pieces 64 surrounding it. The plurality of claw pieces 64 are arranged at intervals in the circumferential direction. The wire clamping sleeve 63 is clamped on the inner peripheral side of the plurality of claw pieces 64. Specifically, when the plurality of claw pieces 64 gather towards the inner periphery, the inner diameter of the other port 61b of the tail pipe 60 decreases. In some embodiments, the claw pieces 64 and the other parts of the tail pipe 60 are integrally provided. The plurality of claw pieces 64 can gather towards the inner periphery by deformation and apply pressure to the outer peripheral surface of the wire clamping sleeve 63.

[0058] In some embodiments, as shown in Figure 6 FIG. 8, a contraction guiding surface 72 is formed on the inner peripheral side of the end cap 70. The contraction guiding surface 72 narrows and changes in the reverse direction of the insertion direction F1. The free end 641 of the claw piece 64 abuts against the contraction guiding surface 72. Specifically, the contraction guiding surface 72 is arranged circumferentially. The free end 641 is the end of the claw piece 64 far from the tube shell 50. When the end cap 70 is tightened relative to the outer shell 40 by screwing, the contraction guiding surface 72 pushes the free end 641 of the plurality of claw pieces 64 towards the inner periphery, so that the claw pieces 64 generate a greater pressure on the outer peripheral surface of the wire clamping sleeve 63, so that the wire clamping sleeve 63 can contract and deform and generate a greater frictional force on the outer periphery of the electrical cable, improving the effect of preventing the electrical cable from loosening. Specifically, the outer diameter of the wire clamping sleeve 63 is greater than the inner diameter of the end cap 70.

[0059] In some embodiments, in combination with Figure 3 As shown, the other port 61b of the tail pipe 60 extends outside the housing 40 and is received in the end cap 70.

[0060] In some embodiments, the end cap 70 is threadedly inserted into the tail end 42 of the housing 40. Specifically, an external thread is provided on the outer peripheral side of a section of the end cap 70 close to the tube shell 50. An internal thread is provided on the housing 40 near the tail end 42. In some embodiments, the second limiting surface 62 is provided inside the housing 40. Since a part of the end cap 70 is inserted inside the housing 40, the end cap 70 can abut against the second limiting surface 62 inside the housing 40.

[0061] In some embodiments, in combination with Figures 3 to 6 As shown, the end cap 70 further includes an outer cap portion 74 connected to the inner tube portion 73. The outer diameter of the outer cap portion 74 is larger than the outer diameter of the inner tube portion 73. Specifically, the outer cap portion 74 is for being held by a human hand to twist the end cap 70. Since the outer diameter of the outer cap portion 74 is larger than the outer diameter of the inner tube portion 73, the contact area between the end cap 70 and the human hand can be increased, which is beneficial for the hand to exert force. In some embodiments, the outer diameter of the outer cap portion 74 is not larger than the inner diameter of the housing 40.

[0062] In some embodiments, in combination with Figure 4 As shown, a stepped transition is formed between the outer cap portion 74 and the inner tube portion 73 and a sealing stepped surface 71 is formed along the outer circumference. Specifically, the sealing stepped surface 71 is disposed opposite to the tail end 42 of the housing 40.

[0063] In some embodiments, in combination with Figure 3 and Figure 6 As shown, the connector 100 further includes a seal 80. The seal 80 abuts circumferentially between the sealing stepped surface 71 and the tail end 42 of the housing 40, so as to prevent liquid from entering the housing 40 through the gap between the end cap 70 and the housing 40. Specifically, the seal 80 is annular and has elasticity and flexibility. In some embodiments, the seal 80 is made of rubber, silica gel or other materials capable of achieving sealing.

[0064] The above embodiments are only descriptions of the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A connector, characterized in that: include: A shell, the interior of which is arranged to penetrate along the insertion direction; A tube shell, with a front tube opening and a rear tube opening opposite to each other along the insertion direction; the tube shell is accommodated in the outer shell at least with the rear tube opening; A tail pipe, comprising a first pipe section and a second pipe section connected to each other; the second pipe section and the first pipe section are sequentially distributed along the insertion direction; the outer diameter of the first pipe section corresponds to the inner diameter of the outer shell, and the port of the first pipe section is arranged opposite to the rear pipe opening; the outer circumference of the second pipe section is spaced from the inner circumference of the outer shell; and The end cap has an inner tube portion; the inner tube portion is provided with an external thread; the inner tube portion is arranged on the outer circumference of the second pipe segment and on the inner circumference of the outer shell; the inner tube portion is threadedly matched with the outer shell; the end cap and the tail pipe form an abutment fit that can limit the tail pipe from exiting the outer shell.

2. The connector according to claim 1, characterized in that: The first pipe section includes a pipe body portion connected to the second pipe section and an outer ring portion connected to the pipe body portion; the opening of the pipe body portion is arranged opposite to the rear pipe opening; the outer ring portion surrounds the outer circumference of the pipe body portion and protrudes relative to the outer circumferential surface of the pipe body portion; the outer ring portion abuts against the inner circumferential surface of the outer shell.

3. The connector according to claim 1, characterized in that: A first positioning groove is formed on one of the outer circumference of the tube shell and the inner circumference of the shell, and a positioning rib is connected to the other one; the positioning rib is accommodated in the first positioning groove.

4. The connector according to claim 3, characterized in that: The outer circumference of the tube shell is provided with the first positioning groove; one end of the inner space of the first positioning groove extends toward the front tube opening; along the direction close to the front tube opening, the width of the first positioning groove along the outer circumference of the tube shell expands and changes; the inner circumference of the shell is provided with the positioning rib; the positioning rib is arranged in a protrusion relative to the inner circumference of the shell.

5. The connector according to claim 1, characterized in that: The end cap also includes an outer cap portion connected to the inner cylinder portion; the outer diameter of the outer cap portion is greater than the outer diameter of the inner cylinder portion.

6. The connector according to claim 5, characterized in that: It also includes a sealing member; the outer cap portion and the inner cylinder portion are in a stepped transition and a sealing step surface is formed along the outer circumference; the sealing member is circumferentially supported between the sealing step surface and the tail end of the outer shell.

7. The connector according to claim 1, characterized in that: It also includes a wire clamping sleeve; the wire clamping sleeve is inserted into the other end of the tail pipe.

8. The connector according to claim 7, characterized in that: The other port of the tail pipe is formed by being surrounded by a plurality of claw pieces, and the plurality of claw pieces are arranged at intervals along the circumferential direction; the wire clamping sleeve is clamped on the inner circumference of the plurality of claw pieces; a contraction guide surface is formed on the inner circumference of the end cap; the contraction guide surface narrows in the opposite direction of the insertion direction; and the free end of the claw piece is abutted against the contraction guide surface.

9. The connector according to claim 1, characterized in that: A second positioning groove is formed on one of the outer circumference of the tail pipe and the inner circumference of the shell, and a positioning rib is connected to the other one; the positioning rib is accommodated in the second positioning groove.

10. The connector according to claim 9, characterized in that: A second positioning groove is provided on the outer circumference of the tail pipe; one end of the inner space of the second positioning groove extends toward a port of the tail pipe; the positioning rib is provided on the inner circumference of the outer shell; the positioning rib is protruded relative to the inner circumference of the outer shell; along the direction close to the port of the tail pipe, the width of the second positioning groove along the outer circumference of the tail pipe expands.

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