Single core via connector

Abstract

The application relates to the technical field of electronic connectors, in particular to a single-core via hole connector which comprises a shell casting, a metal ring and a shielding ring; the shell casting is provided with a hollow; the metal ring is arranged at one end of the shell casting, and the shielding ring is arranged on the inner side of the metal ring; the metal ring comprises a ring-shaped main body and a first locking piece; the ring-shaped main body is arranged on the inner side of the shell casting and is fixedly connected; the first locking piece is arranged on the ring-shaped main body; the ring-shaped main body is provided with a first avoiding groove, and the end of the first locking piece is located in the first avoiding groove; the middle part of the first locking piece protrudes to the inner side of the ring-shaped main body and abuts against the circumferential wall of the shielding ring. The end of the first locking piece is protected, so that the edge curling of the end of the first locking piece caused by external force in the use process is effectively avoided, the shielding ring is further prevented from being damaged, and the shielding effect is affected.

Description

Technical Field

[0001] This application relates to the field of electronic connector technology, and in particular to a single-core through-hole connector on a printed circuit board (PCB). Background Technology

[0002] With the miniaturization and high integration of electronic devices, the demand for connectors on printed circuit boards (PCBs) is increasing. Single-core connectors, due to their small size and flexibility, are gaining attention. Commercially available single-core connectors consist of two core structures: a housing and a shielding device. Chinese invention patent document CN110190451B discloses a connector and its shielding sleeve assembly. The shielding sleeve assembly includes a shielding layer and a shielding sleeve. A shielding ring is fixedly mounted on the shielding sleeve. The shielding ring includes an annular body and multiple spring tabs. The free ends of the spring tabs are bent towards the shielding sleeve to form an arc-shaped pressing portion in the middle of the spring tab for elastic pressing engagement with the metal housing of the connector. During use, the shielding ring is fixedly mounted to the shielding sleeve via the annular body. The spring tabs extend towards the rear end of the shielding sleeve and elastically press against the metal housing. The spring tabs and the metal housing are radially pressed together to achieve a conductive connection with the shielding sleeve.

[0003] In the above technical solution, the edges of the spring contacts are exposed. During use, when the non-axial force on the spring contacts on the shielding ring exceeds the yield strength of the spring contact material, the spring contacts will undergo permanent bending or twisting, i.e., curling. After curling, the spring contact's resilience will decrease significantly, leading to poor contact. In addition, the curled metal burrs or sharp corners will scratch the metal housing during subsequent insertion and removal, generating metal debris, causing short circuits or permanent damage; or they may scratch the shielding ring, resulting in a decrease in shielding effectiveness.

[0004] Therefore, there is an urgent need to provide a single-core through-hole connector that protects the spring contacts and prevents them from curling. Summary of the Invention

[0005] This application provides a single-core through-hole connector, which solves the problem of spring contact curling in single-core through-hole connectors, and adopts the following technical solution: A single-core through-hole connector includes a housing casting, a metal ring, and a shielding ring; the housing casting is hollow; the metal ring is located at one end of the housing casting, and the shielding ring is located inside the metal ring; The metal ring includes an annular body and a first locking piece; The annular main body is located inside the outer shell casting and is fixedly connected; The first locking piece is disposed on the annular body, and the annular body is provided with a first clearance groove. The end of the first locking piece is located in the first clearance groove; the middle part of the first locking piece protrudes to the inner side of the annular body and abuts against the circumferential side wall of the shielding ring.

[0006] By adopting the above technical solution, during use, when the cable moves in the single-core through-hole connector, the protrusion of the first locking piece clamps the shielding ring, and there is a gap between the shielding ring and the end of the first locking piece. During the movement, the shielding ring avoids exerting force on the edge of the first locking piece, effectively preventing the first locking piece from curling.

[0007] Preferably, the annular body further includes an anti-detachment piece, which is disposed on the annular body. A first slot is provided on the inner wall of the outer shell casting, and the anti-detachment piece is embedded in the first slot to achieve relative fixation between the annular body and the outer shell casting.

[0008] By adopting the above technical solution, a first slot is opened on the outer shell casting, and the anti-detachment piece is embedded in the first slot. The outer side of the anti-detachment piece abuts against the metal shell, thereby achieving the fixation of the annular body and the outer shell casting.

[0009] Preferably, the first slot is arranged around the inner wall of the outer casing casting.

[0010] By adopting the above technical solution, the first slot is set around the inner wall of the outer casing casting, and the anti-detachment piece can be embedded in the first slot from any direction, avoiding the problem of needing to find a specific angle for installation and simplifying the installation process.

[0011] Preferably, the annular body further includes a second locking piece, which is disposed on the annular body and folded to the outside of the outer shell casting; a second clearance groove is provided on the outer wall of the outer shell casting, and the end of the second locking piece is located in the second clearance groove; the middle part of the second locking piece protrudes to the outside of the second clearance groove.

[0012] By adopting the above technical solution, when the single-core through-hole connector needs to be dragged after installation, especially when there are multiple strands of cable, the second locking piece is placed in the second clearance groove, which effectively prevents the end of the second locking piece from getting caught on other cables or debris on the ground, and prevents the second locking piece from curling due to external force.

[0013] Preferably, a slot is also provided on the side wall of the second clearance groove, and the end of the second locking piece is placed in the second slot.

[0014] By adopting the above technical solution, the end of the second locking piece is placed in the second slot, which increases the protection area of ​​the end of the second locking piece and makes the second locking piece less prone to curling.

[0015] Preferably, a groove is provided at the outer edge of the end of the outer casing casting, and the end of the second locking piece connected to the annular body wraps around the outer edge of the end of the outer casing casting and is located in the groove.

[0016] By adopting the above technical solution, the entire metal ring is located within the end plane of the outer shell casting, which effectively avoids the second locking piece from protruding at the connection between the ring body and the ring body, causing excessive force during insertion and removal, which would deform the second locking piece and affect its function. At the same time, it shortens the length of the single-core through-hole connector.

[0017] Preferably, the shielding ring is divided into an inner shielding ring and an outer shielding ring, and the inner shielding ring and the outer shielding ring are fixedly connected.

[0018] By adopting the above technical solution, the outer shielding ring is used to shield external interference, and the inner shielding ring provides rigid constraint on the wire harness, enhancing the contact between the shielding ring and the cable, which helps to improve the efficiency of the shielding ring.

[0019] Preferably, a first sealing ring is provided on the outer periphery of the outer casing casting.

[0020] By adopting the above technical solution, a first sealing ring is set on the outer casing casting to achieve sealing between the outer casing casting and the mounting plate during use.

[0021] Preferably, the inner wall of the hollow outer casing casting is provided with a second sealing ring, which is used to abut against the cable passing through the inside of the outer casing casting.

[0022] By adopting the above technical solution, the second sealing ring is used to seal the outer casing casting and the cable, effectively preventing moisture and dust from entering the shielding ring from the cable end and affecting the shielding ring's performance.

[0023] Preferably, the hollow outer shell casting has a buckle and a connecting plate on its outer wall, and the connecting plate has a first connecting hole.

[0024] By adopting the above technical solution, the corrugated tube used for cable bundling is fixed with a buckle, which prevents the corrugated tube from detaching. A connecting plate is provided on the outer shell, and a first connecting hole is provided on the connecting plate. During use, the first connecting hole is fixed to the mounting plate with bolts to prevent the single-core through-hole connector from detaching from the mounting plate.

[0025] In summary, the present invention has at least one of the following beneficial technical effects: 1. By setting clearance grooves and slot structures to protect the ends of the first and second locking plates, it helps to prevent the locking plates from curling. 2. Double-layer shielding rings are used to further enhance the shielding effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a single-core through-hole connector; Figure 2 This is an exploded view of a single-core through-hole connector; Figure 3This is a schematic diagram of the cross-sectional structure of the shielding device; Figure 4 yes Figure 3 Enlarged diagram of Part A.

[0027] Figure 5 This is a cross-sectional diagram of a single-core through-hole connector mating with a mounting plate. In the attached diagram, the following are labeled: 1. Outer shell casting; 2. Metal ring; 3. Shielding ring; 101. First slot; 102. Second clearance slot; 103. Second slot; 104. Groove; 105. First sealing ring; 106. Second sealing ring; 107. Buckle; 108. Corrugated pipe; 109. Connecting plate; 110. First connecting hole; 1. Annular body; 202. First locking piece; 203. First clearance groove; 204. Anti-detachment piece; 205. Second locking piece; 301. Inner shielding ring; 302. Outer shielding ring; 4. Mounting plate; 401. Mounting hole; 402. Second connecting hole. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] The applicant discovered that commonly used single-core connectors often have exposed edges of the metal contacts. During use, when the non-axial force on the contacts exceeds the yield strength of the contact material, the contacts will permanently bend or twist, i.e., curl. This curling causes abnormal wear on the shielding ring, affecting its service life and shielding effectiveness.

[0030] To address the aforementioned issues, this application provides a structure for protecting the locking plate. By placing the locking plate within an clearance groove and the end of the second locking plate within a second slot, protection of the locking plate is achieved, preventing edge curling. A double-layer shielding ring structure is employed, with the outer shielding ring used to shield against external interference and the inner shielding ring used to rigidly constrain the wire harness, thereby improving the shielding effect.

[0031] This application discloses a single-core through-hole connector. (Refer to...) Figure 1-2The single-core through-hole connector includes a housing casting 1, a metal ring 2, and a shielding ring 3. The housing casting 1 is hollow; the metal ring 2 is located at one end of the housing casting 1, and the shielding ring 3 is located inside the metal ring 2; the metal ring 2 includes an annular body 201 and a first locking plate 202; the annular body 201 is located inside the housing casting 1 and is fixedly connected; the first locking plate 202 is located on the annular body 201, which has a first clearance groove 203. The end of the first locking plate 202 is located within the first clearance groove 203, and the middle part of the first locking plate 202 protrudes into the inner side of the annular body 201 and abuts against the peripheral sidewall of the shielding ring 3. During use, the cable passes through the shielding ring 3, and the shielding ring 3 only contacts the protruding middle part of the first locking plate 202. The end of the first locking plate 202 does not contact the shielding ring 3, preventing the end of the first locking plate 202 from curling due to the force of the cable, thus avoiding damage to the shielding ring 3.

[0032] For details, please refer to Figure 2 and Figure 4 In order to fix the metal ring 2 and the outer shell casting 1, an anti-detachment piece 204 is provided on the annular body 201 of the metal ring 2. A first slot 101 is opened on the inner wall of the outer shell casting 1 around the inner wall. The anti-detachment piece 204 is embedded in the first slot 101. By embedding the anti-detachment piece 204 into the first slot 101, the metal ring 2 and the outer shell casting 1 are fixedly connected. The anti-detachment piece 204 can also be welded to the inner wall of the outer shell casting 1.

[0033] For specific references Figure 2-4 The metal ring 2 is also provided with a second locking piece 205. One end of the second locking piece 205 connected to the ring body 201 is wrapped around the outer edge of the end of the outer casing casting 1 and located in the groove 104. The second locking piece 205 is located outside the second clearance groove 102, and the end of the second locking piece 205 is placed in the second slot 103. When in use, the second locking piece 205 cooperates with the housing. At the same time, the end of the second locking piece 205 is placed outside the second clearance groove 102 and the end of the second locking piece 205 is placed in the second slot 103. This avoids the end of the second locking piece 205 from contacting the external housing during use. It also avoids the end of the second locking piece 205 from contacting other debris when dragging the cable with the single-core through-hole connector installed, which would cause damage to the second locking piece 205.

[0034] For details, please refer to Figure 3 As a further optimization, the shielding ring 3 includes an inner shielding ring 301 and an outer shielding ring 302. The outer shielding ring 302 is used to shield against external interference, while the inner shielding ring 301 is used to rigidly constrain the wire harness inside the shielding ring 3, enhance the contact between the shielding ring 3 and the cable, and improve the shielding effect.

[0035] For details, please refer to Figure 2 and Figure 3To enhance the sealing performance of the single-core through-hole connector, a first sealing ring 105 and a second sealing ring 106 are provided on the housing casting 1. The first sealing ring 105 is used to seal the housing casting 1 and the mounting plate 4, and the second sealing ring 106 is used to seal the housing casting 1 and the cable. The sealing rings prevent dust, water and other substances from entering the single-core through-hole connector, causing internal corrosion and affecting its lifespan.

[0036] For details, please refer to Figure 3 As a further optimization, a buckle 107 and a connecting plate 109 are provided on the outer casing casting. The connecting plate is provided with a first connecting hole. During use, the cable is generally protected by a corrugated tube 108. The buckle 107 is used to fix the corrugated tube 108 to prevent the corrugated tube 108 from falling off and exposing the cable. The connecting plate 109 is used to connect with the mounting plate 4.

[0037] For details, please refer to Figure 5 When in use, the single-core through-hole connector is inserted into the mounting hole 401 on the mounting plate 4. The mounting hole 401 is a circular hole that connects to the second locking piece 205. The mounting plate 4 is also provided with a second connecting hole 402. When the single-core through-hole connector is inserted into the mounting hole 401, the first connecting hole 110 and the second connecting hole 402 are in the same position. The two can be connected by bolts to fix the single-core through-hole connector.

[0038] The implementation principle of the single-core through-hole connector in this embodiment is as follows: the cable in the bellows 108 passes through the single-core through-hole connector, the bellows 108 is fixed by the snap fastener 107, the second sealing ring 106 seals the cable to the outer casing casting 1, the cable is rigidly constrained by the inner shielding ring 301 and directly contacts the inner shielding ring 301; the inner shielding ring 301 is connected to the outer shielding ring 302 that shields external interference to form the entire shielding ring 3, the inner and outer shielding rings work together to enhance the shielding effect. The first locking piece 202 is used to clamp the shielding ring 3 to fix the shielding ring 3, and the protrusion of the second locking piece 205 directly contacts the inner wall of the mounting hole 401 on the mounting plate 4 during use. The ends of the first locking piece 202 and the second locking piece 205 are both protected to avoid the locking piece ends directly contacting the shielding ring 3 and the mounting plate 4, thus avoiding the risk of the locking piece ends curling.

[0039] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A single-core through-hole connector, characterized in that: It includes an outer shell casting (1), a metal ring (2) and a shielding ring (3); the outer shell casting (1) is hollow; the metal ring (2) is located at one end of the outer shell casting (1), and the shielding ring (3) is located inside the metal ring (2); The metal ring (2) includes an annular body (201) and a first locking piece (202); The annular body (201) is located inside the outer shell casting (1) and is fixedly connected; The first locking piece (202) is disposed on the annular body (201), and the annular body (201) is provided with a first clearance groove (203). The end of the first locking piece (202) is located in the first clearance groove (203); the middle part of the first locking piece (202) protrudes to the inner side of the annular body (201) and abuts against the peripheral side wall of the shielding ring (3).

2. The single-core through-hole connector according to claim 1, characterized in that: The annular body (201) also includes an anti-detachment piece (204), which is disposed on the annular body (201). The inner wall of the outer shell casting (1) is provided with a first slot (101), and the anti-detachment piece (204) is embedded in the first slot (101) to achieve relative fixation between the annular body (201) and the outer shell casting (1).

3. The single-core through-hole connector according to claim 2, characterized in that: The first slot (101) is arranged around the inner wall of the outer casing casting (1).

4. The single-core through-hole connector according to claim 1, characterized in that: The annular body (201) also includes a second locking piece (205), which is disposed on the annular body (201) and folded to the outside of the outer shell casting (1); a second clearance groove (102) is provided on the outer wall of the outer shell casting (1), and the end of the second locking piece (205) is located in the second clearance groove (102); the middle part of the second locking piece (205) protrudes to the outside of the second clearance groove (102).

5. The single-core through-hole connector according to claim 4, characterized in that: A second slot (103) is also provided on the side wall of the second clearance groove (102), and the end of the second locking piece (205) is placed in the second slot (103).

6. The single-core through-hole connector according to claim 4, characterized in that: A groove (104) is provided at the outer edge of the end of the outer shell casting (1). The end of the second locking piece (205) connected to the annular body (201) wraps around the outer edge of the end of the outer shell casting (1) and is located inside (104).

7. The single-core through-hole connector according to claim 1, characterized in that: The shielding ring (3) is divided into an inner shielding ring (301) and an outer shielding ring (302), and the inner shielding ring (301) and the outer shielding ring (302) are fixedly connected.

8. The single-core through-hole connector according to claim 1, characterized in that: The outer periphery of the outer casing casting (1) is provided with a first sealing ring (105).

9. The single-core through-hole connector according to claim 1, characterized in that: The hollow outer shell casting (1) is provided with a second sealing ring (106) on its inner wall. The second sealing ring (106) is used to abut against the cable passing through the inner wall of the outer shell casting (1).

10. The single-core through-hole connector according to claim 1, characterized in that: The hollow outer shell casting (1) has a buckle (107) and a connecting plate (109) on its outer wall, and the connecting plate has a first connecting hole (110).

Images