Locking connector

Abstract

The utility model belongs to the technical field of connectors, and particularly relates to a locking connector, which comprises a locking piece, an insulating seat, a terminal body provided with a first through hole and a shell provided with an inner through hole, one end of the locking piece is provided with a limiting end part, and the other end of the locking piece is provided with a first elastic buckle and a second elastic buckle which are distributed at an interval; the insulating seat is provided with a terminal through hole, two opposite side walls of the terminal through hole are respectively provided with a second through hole and a third through hole, the inner wall of the second through hole is provided with a first annular convex part, and the inner wall of the third through hole is provided with a second annular convex part; the terminal body is installed in the terminal through hole, the locking piece is inserted into the second through hole, the first through hole and the third through hole, the limiting end part abuts against the first annular convex part, and the first elastic buckle and the second elastic buckle are clamped with the second annular convex part; and the insulating seat is arranged in the inner through hole. According to the utility model, the locking connector is simple in disassembly and assembly operation and high in stability.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and in particular relates to a locking connector. Background Technology

[0002] An electrical connector is a common electronic device that enables the transmission of current and / or signals through the contact of its terminals. Electrical connectors typically consist of a male connector and a female connector, each with its own built-in terminals. By inserting or removing the male and female connectors, the terminals between them are connected or disconnected, thus enabling or discontinuing the transmission of current and / or signals.

[0003] Electrical connectors typically consist of a housing, an insulating base, and conductive terminals. The conductive terminals are housed within the insulating base, which in turn is housed within the housing. However, in existing electrical connectors, the conductive terminals are prone to detaching from the insulating base after repeated mating and unmating; furthermore, existing electrical connectors also suffer from inconvenient assembly and disassembly. Summary of the Invention

[0004] This utility model provides a locking connector to solve the technical problems of existing electrical connectors, such as inconvenient disassembly and assembly operations and easy detachment of conductive terminals.

[0005] One embodiment of the present invention provides a locking connector, including a locking member, an insulating base, a terminal body having a first through hole, and a housing having an inner through hole; one end of the locking member is provided with a limiting end, and the other end of the locking member is provided with a first spring buckle and a second spring buckle spaced apart;

[0006] The insulating base is provided with a terminal through hole, and a second through hole and a third through hole are respectively provided on the opposite side walls of the terminal through hole. A first annular protrusion is provided on the inner wall of the second through hole, and a second annular protrusion is provided on the inner wall of the third through hole.

[0007] The terminal body is installed in the terminal through hole, the locking member is inserted into the second through hole, the first through hole and the third through hole, the limiting end abuts against the first annular protrusion, and the first spring buckle and the second spring buckle are both engaged with the second annular protrusion; the insulating seat is installed in the inner through hole.

[0008] Optionally, the insulating base is provided with a square protrusion, the terminal through hole passes through the square protrusion, the second through hole passes through the first side wall of the square protrusion, and the third through hole passes through the second side wall of the square protrusion, wherein the first side wall and the second side wall are the opposite side walls of the square protrusion.

[0009] Optionally, the insulating base is further provided with a groove, the bottom wall of the groove is provided with an elastic buckle, and the housing is further provided with a locking hole communicating with the inner through hole, the elastic buckle being engaged in the locking hole.

[0010] Optionally, the insulating base may also be provided with an annular hole surrounding the terminal through hole.

[0011] Optionally, the outer wall of the housing is provided with an outer plate, and the outer plate is provided with an annular groove; the locking connector further includes an end plate and a sealing ring, the sealing ring is installed in the annular groove, the end plate is installed on the outer plate, and the sealing ring abuts against the end plate.

[0012] Optionally, the upper side of the sealing ring is provided with a plurality of third annular protrusions spaced apart, and a first annular water storage groove is provided between two adjacent third annular protrusions; the third annular protrusions abut against the end plate;

[0013] The lower side of the sealing ring is provided with a plurality of fourth annular protrusions spaced apart, and a second annular water storage groove is provided between two adjacent fourth annular protrusions; the fourth annular protrusions abut against the bottom wall of the annular groove.

[0014] Optionally, the inner wall of the sealing ring is provided with a plurality of protrusions spaced apart, and the protrusions abut against the inner sidewall of the annular groove;

[0015] The inner wall corner of the sealing ring is provided with a retaining arm, and the housing is provided with a retaining groove that is adapted to the retaining arm, and the retaining arm is engaged in the retaining groove.

[0016] Optionally, the locking connector further includes a shielding cylinder and a limiting cylinder with an outward flange; the outer wall of the shielding cylinder is provided with a plurality of side holes spaced apart, and each side hole is provided with a spring arm; the limiting cylinder is sleeved on the terminal body, the shielding cylinder is sleeved on the limiting cylinder and abuts against the outward flange, and the spring arm abuts against the inner wall of the inner through hole.

[0017] Optionally, the locking connector further includes a sealing cylinder and an end cap cylinder. The sealing cylinder is sleeved on the terminal body, and the end cap cylinder is sleeved on the terminal body and snapped against the outer wall of the housing. One end of the sealing cylinder abuts against the side of the outward flange away from the shielding cylinder, and the other end of the sealing cylinder abuts against the end cap cylinder.

[0018] Optionally, the end cap cylinder includes a cylinder body and a side plate connected to the cylinder body. The side plate is provided with a snap-fit ​​hole and a first guide hole and a second guide hole located on the opposite side of the snap-fit ​​hole. The outer wall of the housing is provided with a snap block and a first guide block and a second guide block located on opposite sides of the snap block.

[0019] The cylindrical body is sleeved on the terminal body, the locking block is locked in the locking hole, the first guide block is inserted into the first guide hole, and the second guide block is inserted into the second guide hole.

[0020] In this invention, the terminal body is first installed in the terminal through hole, and then the locking member is inserted into the second through hole, the first through hole, and the third through hole. After the first and second spring buckles of the locking member pass through the second and first through holes and extend into the third through hole, the first and second spring buckles will automatically spring open and engage with the second annular protrusion. The limiting end abuts against the first annular protrusion, thereby ensuring the stability of the locking member inserted in the second through hole, the first through hole, and the third through hole, and the locking member ensures the stability of the terminal body installed in the terminal through hole; and the locking connector is easy to assemble and disassemble. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a locking connector provided in an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a locking connector provided in an embodiment of the present invention;

[0024] Figure 3 This is an exploded structural diagram of a locking connector provided in one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the housing of a locking connector provided in one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the insulating base of the locking connector provided in one embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of the insulating base of a locking connector provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the locking element of a locking connector provided in an embodiment of the present invention;

[0029] Figure 8This is a schematic diagram of the sealing ring of a locking connector provided in one embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the end cap of a locking connector provided in one embodiment of the present invention.

[0031] The reference numerals in the accompanying drawings are as follows:

[0032] 1. Locking element; 11. Limiting end; 12. First spring snap; 13. Second spring snap; 2. Insulating base; 21. Terminal through hole; 22. Second through hole; 23. Third through hole; 24. First annular protrusion; 25. Second annular protrusion; 26. Square protrusion; 27. Groove; 28. Elastic snap; 29. ​​Annular hole; 3. Terminal body; 31. First through hole; 4. Housing; 41. Inner through hole; 42. Locking hole; 43. Outer plate; 431. Annular groove; 44. Slot; 45. Block; 46. First guide block; 47. Second guide block; 5. End plate; 6. Sealing ring; 61. Third annular protrusion; 62. Protrusion; 63. Clamping arm; 7. Shielding cylinder; 8. Limiting cylinder; 9. End cap cylinder; 91. Cylinder body; 92. Side plate; 921. Snap-fit ​​hole; 922. First guide hole; 923. Second guide hole; 10. Sealing cylinder. Detailed Implementation

[0033] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] like Figures 1 to 3 as well as Figure 7 As shown, an embodiment of this utility model provides a locking connector, including a locking member 1, an insulating base 2, a terminal body 3 with a first through hole 31, and a housing 4 with an inner through hole 41; one end of the locking member 1 is provided with a limiting end 11, and the other end of the locking member 1 is provided with a first spring buckle 12 and a second spring buckle 13 spaced apart; it can be understood that the first spring buckle 12 and the second spring buckle 13 are symmetrically arranged, and a groove is provided between the first spring buckle 12 and the second spring buckle 13, so that the first spring buckle 12 and the second spring buckle 13 have a certain elasticity; the insulating base 2 can be made of insulating materials such as plastic and silicone, and the housing 4 can be made of insulating materials such as metal.

[0037] The insulating base 2 is provided with a terminal through hole 21. The two opposite side walls of the terminal through hole 21 are respectively provided with a second through hole 22 and a third through hole 23. The inner wall of the second through hole 22 is provided with a first annular protrusion 24, and the inner wall of the third through hole 23 is provided with a second annular protrusion 25. It can be understood that the first annular protrusion 24 protrudes toward the middle of the second through hole 22, the second annular protrusion 25 protrudes toward the middle of the third through hole 23, and the second through hole 22 and the third through hole 23 are coaxially arranged.

[0038] The terminal body 3 is installed in the terminal through hole 21, the locking member 1 is inserted into the second through hole 22, the first through hole 31 and the third through hole 23, the limiting end 11 abuts against the first annular protrusion 24, the first spring buckle 12 and the second spring buckle 13 are both engaged with the second annular protrusion 25; the insulating seat 2 is installed in the inner through hole 41.

[0039] Specifically, the terminal body 3 is first installed in the terminal through hole 21, and then the locking member 1 is inserted into the second through hole 22, the first through hole 31, and the third through hole 23. After the first spring buckle 12 and the second spring buckle 13 of the locking member 1 pass through the second through hole 22 and the first through hole 31 and extend into the third through hole 23, the first spring buckle 12 and the second spring buckle 13 will automatically spring open and engage with the second annular protrusion 25. The limiting end 11 abuts against the first annular protrusion 24, thereby ensuring the stability of the locking member 1 inserted into the second through hole 22, the first through hole 31, and the third through hole 23, and the locking member 1 ensures the stability of the terminal body 3 installed in the terminal through hole 21; and the locking connector is easy to assemble and disassemble.

[0040] In one embodiment, such as Figure 5 and Figure 6 As shown, the insulating base 2 has a square protrusion 26. The terminal through hole 21 penetrates the square protrusion 26, the second through hole 22 passes through the first sidewall of the square protrusion 26, and the third through hole 23 penetrates the second sidewall of the square protrusion 26. The first sidewall and the second sidewall are the opposite sidewalls of the square protrusion 26, respectively. It can be understood that the square protrusion 26 is located on the top of the insulating base 2. The design of the square protrusion 26 facilitates the provision of the second through hole 22 and the third through hole 23 on the insulating base 2, improving the ease of manufacturing the insulating base 2.

[0041] In one embodiment, such as Figure 5 As shown, the insulating base 2 is further provided with a groove 27, and an elastic buckle 28 is provided on the bottom wall of the groove 27. The housing 4 is further provided with a locking hole 42 communicating with the inner through hole 41, and the elastic buckle 28 is engaged in the locking hole 42. It can be understood that the groove 27 is located on the top of the insulating base 2, and the locking end of the elastic buckle 28 faces the outside of the insulating base 2.

[0042] Specifically, during the process of installing the insulating seat 2 in the inner through hole 41 of the housing 4, the inner wall of the inner through hole 41 will compress the elastic buckle 28 inward until the elastic buckle 28 is engaged in the buckle hole 42. At this time, the insulating seat 2 has been stably installed in the housing 4. In this embodiment, the design of the elastic buckle 28 further improves the ease of disassembly and assembly of the locking connector.

[0043] In one embodiment, such as Figure 2 and Figure 6As shown, the insulating base 2 is also provided with an annular hole 29 surrounding the terminal through hole 21. Understandably, the interior of the annular hole 29 is filled with air and surrounds the terminal body 3. In this embodiment, the design of the annular hole 29 creates an air gap between the terminal body 3 and the housing 4, making it less likely for static electricity on the terminal body 3 to break down the housing 4, ensuring the safety of the locking connector, reducing the circumferential dimensions of the locking connector, and improving its compactness.

[0044] In one embodiment, such as Figures 1 to 3 As shown, the outer wall of the housing 4 is provided with an outer plate 43, and the outer plate 43 is provided with an annular groove 431; the locking connector also includes an end plate 5 and a sealing ring 6. The sealing ring 6 is installed in the annular groove 431, and the end plate 5 is installed on the outer plate 43, with the sealing ring 6 abutting against the end plate 5. It can be understood that both the outer plate 43 and the end plate 5 can be square plates, and the end plate 5 can be installed on the outer plate 43 by screws, bolts, or other fasteners; the sealing ring 6 is pressed between the end plate 5 and the outer plate 43, and the sealing ring 6 is arranged around the terminal through hole 21, ensuring the waterproof rating of the locking connector.

[0045] In one embodiment, such as Figure 2 and Figure 8 As shown, the upper side of the sealing ring 6 is provided with a plurality of spaced-apart third annular protrusions 61, and a first annular water-retaining groove is provided between two adjacent third annular protrusions 61; the third annular protrusions 61 abut against the end plate 5; the lower side of the sealing ring 6 is provided with a plurality of spaced-apart fourth annular protrusions, and a second annular water-retaining groove is provided between two adjacent fourth annular protrusions; the fourth annular protrusions abut against the bottom wall of the annular groove 431. It can be understood that the number of third annular protrusions 61 and fourth annular protrusions can be set according to actual needs, and annular water-retaining grooves are formed between two adjacent third annular protrusions 61 and two adjacent fourth annular protrusions, further improving the waterproof rating of the locking connector.

[0046] In one embodiment, such as Figure 4 and Figure 8 As shown, the inner wall of the sealing ring 6 is provided with a plurality of protrusions 62 spaced apart, and the protrusions 62 abut against the inner sidewall of the annular groove 431; it can be understood that the number of protrusions 62 can be set according to actual needs, and the protrusions 62 can make the sealing ring 6 tightly pressed in the annular groove 431.

[0047] The sealing ring 6 has a retaining arm 63 at each inner corner, and the housing 4 has a retaining groove 44 that fits the retaining arm 63. The retaining arm 63 is engaged in the retaining groove 44. It can be understood that the sealing ring 6 is a square ring, and the retaining arm 63 is provided at each of the four inner corners of the sealing ring 6. The retaining arm 63 is engaged in the retaining groove 44, thereby ensuring the stability of the sealing ring 6 installed on the housing 4.

[0048] In one embodiment, such as Figure 2 and Figure 3 As shown, the locking connector further includes a shielding cylinder 7 and a limiting cylinder 8 with an outwardly flanged edge. The outer wall of the shielding cylinder 7 has multiple side holes spaced apart, each side hole containing a spring arm. The limiting cylinder 8 is sleeved on the terminal body 3, and the shielding cylinder 7 is sleeved on the limiting cylinder 8 and abuts against the outwardly flanged edge. The spring arm abuts against the inner wall of the inner through hole 41. Understandably, the limiting cylinder 8 can limit the shielding cylinder 7 from the bottom, and the limiting cylinder 8 can limit the shielding cylinder 7 within the inner through hole 41. This locking connector has a compact structure and occupies little space.

[0049] In one embodiment, such as Figures 1 to 3 As shown, the locking connector further includes a sealing cylinder 10 and an end cap cylinder 9. The sealing cylinder 10 is sleeved on the terminal body 3, and the end cap cylinder 9 is sleeved on the terminal body 3 and snaps against the outer wall of the housing 4. One end of the sealing cylinder 10 abuts against the side of the outwardly flanged edge facing away from the shielding cylinder 7, and the other end of the sealing cylinder 10 abuts against the end cap cylinder 9. Understandably, the sealing cylinder 10 can block the inner through hole 41 from the bottom, and the end cap cylinder 9 is installed on the housing 4 from the bottom, pressing the sealing sleeve tightly into the inner through hole 41.

[0050] In one embodiment, such as Figure 4 and Figure 9 As shown, the end cap cylinder 9 includes a cylinder body 91 and a side plate 92 connecting the cylinder body 91. The side plate 92 is provided with a snap-fit ​​hole 921 and a first guide hole 922 and a second guide hole 923 located on the opposite side of the snap-fit ​​hole 921. The outer wall of the housing 4 is provided with a snap block 45 and a first guide block 46 and a second guide block 47 located on opposite sides of the snap block 45. It can be understood that the side plate 92 can be an arc-shaped plate adapted to the housing 4. The first guide hole 922 and the second guide hole 923 are respectively provided on the left and right sides of the snap-fit ​​hole 921, and the first guide block 46 and the second guide block 47 are respectively located on the left and right sides of the snap block 45.

[0051] The cylindrical body 91 is sleeved on the terminal body 3, the locking block 45 is engaged in the locking hole 921, the first guide block 46 is inserted into the first guide hole 922, and the second guide block 47 is inserted into the second guide hole 923. Specifically, during the docking process between the end cap cylinder 9 and the housing 4, the first guide block 46 slides in the first guide hole 922, and the second guide block 47 slides in the second guide hole 923 until the locking block 45 is engaged in the locking hole 921. In this embodiment, the disassembly and assembly operation between the end cap cylinder 9 and the housing 4 is simple.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A locking connector, characterized in that, It includes a locking member, an insulating base, a terminal body with a first through hole, and a housing with an inner through hole; one end of the locking member is provided with a limiting end, and the other end of the locking member is provided with a first spring buckle and a second spring buckle distributed at intervals; The insulating base is provided with a terminal through hole, and a second through hole and a third through hole are respectively provided on the opposite side walls of the terminal through hole. A first annular protrusion is provided on the inner wall of the second through hole, and a second annular protrusion is provided on the inner wall of the third through hole. The terminal body is installed in the terminal through hole, the locking member is inserted into the second through hole, the first through hole and the third through hole, the limiting end abuts against the first annular protrusion, and the first spring buckle and the second spring buckle are both engaged with the second annular protrusion; the insulating seat is installed in the inner through hole.

2. The locking connector according to claim 1, characterized in that, The insulating base is provided with a square protrusion, the terminal through hole passes through the square protrusion, the second through hole passes through the first side wall of the square protrusion, and the third through hole passes through the second side wall of the square protrusion. The first side wall and the second side wall are the opposite side walls of the square protrusion.

3. The locking connector according to claim 1, characterized in that, The insulating base is also provided with a groove, and the bottom wall of the groove is provided with an elastic buckle. The housing is also provided with a locking hole that communicates with the inner through hole, and the elastic buckle is engaged in the locking hole.

4. The locking connector according to claim 1, characterized in that, The insulating base is also provided with an annular hole surrounding the terminal through hole.

5. The locking connector according to claim 1, characterized in that, The outer wall of the housing is provided with an outer plate, and the outer plate is provided with an annular groove; the locking connector further includes an end plate and a sealing ring, the sealing ring is installed in the annular groove, the end plate is installed on the outer plate, and the sealing ring abuts against the end plate.

6. The locking connector according to claim 5, characterized in that, The upper side of the sealing ring is provided with a plurality of third annular protrusions spaced apart, and a first annular water storage groove is provided between two adjacent third annular protrusions; the third annular protrusions abut against the end plate; The lower side of the sealing ring is provided with a plurality of fourth annular protrusions spaced apart, and a second annular water storage groove is provided between two adjacent fourth annular protrusions; the fourth annular protrusions abut against the bottom wall of the annular groove.

7. The locking connector according to claim 6, characterized in that, The inner wall of the sealing ring is provided with a plurality of protrusions spaced apart, and the protrusions abut against the inner sidewall of the annular groove; The inner wall corner of the sealing ring is provided with a retaining arm, and the housing is provided with a retaining groove that is adapted to the retaining arm, and the retaining arm is engaged in the retaining groove.

8. The locking connector according to claim 1, characterized in that, The locking connector further includes a shielding cylinder and a limiting cylinder with an outward flange; the outer wall of the shielding cylinder is provided with a plurality of side holes spaced apart, and each side hole is provided with a spring arm; the limiting cylinder is sleeved on the terminal body; the shielding cylinder is sleeved on the limiting cylinder and abuts against the outward flange; and the spring arm abuts against the inner wall of the inner through hole.

9. The locking connector according to claim 8, characterized in that, The locking connector further includes a sealing cylinder and an end cap cylinder. The sealing cylinder is sleeved on the terminal body, and the end cap cylinder is sleeved on the terminal body and snapped against the outer wall of the housing. One end of the sealing cylinder abuts against the side of the outward flange away from the shielding cylinder, and the other end of the sealing cylinder abuts against the end cap cylinder.

10. The locking connector according to claim 9, characterized in that, The end cap cylinder includes a cylinder body and a side plate connected to the cylinder body. The side plate is provided with a snap-fit ​​hole and a first guide hole and a second guide hole located on the opposite side of the snap-fit ​​hole. The outer wall of the housing is provided with a snap block and a first guide block and a second guide block located on opposite sides of the snap block. The cylindrical body is sleeved on the terminal body, the locking block is locked in the locking hole, the first guide block is inserted into the first guide hole, and the second guide block is inserted into the second guide hole.

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