Dual-purpose multi-key low-voltage connector with replaceable inner core
By designing a multi-key low-voltage connector with dual-purpose replacement inner core, using the movable connection of the inner liner to achieve the sharing of different pin number connectors, the problem of the inability to achieve overall waterproofing of the existing medium and low-voltage connectors and the need to purchase a large number of different pin number connectors is solved, and the effect of reducing material and mold development costs, improving waterproof performance and working efficiency is achieved.
Patent Information
- Application Number
- CN202510314974.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2025-04-25
AI Technical Summary
Existing low-voltage connectors cannot achieve overall waterproofing, and require a large number of connectors of different pin numbers to be purchased, resulting in high material costs, low delivery rates, and prone to quality and safety problems and high defective yield rates.
A dual-purpose multi-key low-voltage connector with replaceable inner core is designed, which is movably connected to the plug housing through the inner liner, so that connectors with different pin counts can share a set of plug housing and connection device molds, achieving waterproof performance and error-proof functions, and reducing mold development costs.
The sharing of low-voltage connectors of different pin numbers is achieved, which reduces material costs and mold development costs, improves waterproof performance and work efficiency, and reduces the risk of defective yield and quality and safety.
Smart Images
Figure CN119890777A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of connectors, and in particular to a dual-purpose multi-key low-voltage connector with a replaceable inner core. Background Art
[0002] The low-voltage connector includes a board end and a wire end, and the hole position ranges from 2-32 pins. The connector currently used can only select the connector with the corresponding number of pins according to the needs of the customer. It is necessary to purchase a large number of different connectors, and the material cost will be very high, and the time required for workers to prepare the materials is also very long. The existing low-voltage connector has anti-fool key positions, which makes workers need to spend time to distinguish whether the connector can be matched. Because once the wrong insertion is made, the labor cost and material cost required are very high. Because the connector manufacturers have no inventory and the customer's delivery time is very tight, some manufacturers' products will provide a lot of defective products, requiring a lot of manual labor to pick out defective products, which seriously affects the production progress of the production line. At the same time, users will also be anxious about whether the product can be delivered on time. The existing connectors cannot achieve overall waterproofing, and even some low-voltage connectors cannot meet the waterproofing problems in the wiring harness process. Workers are required to apply glue, which seriously affects the production progress of the production line and consumes a lot of manpower and material resources. Because the inner cavity wall of the low-voltage connector is very thin, workers can pull the terminal out of the inner cavity with just a little effort during quality inspection, resulting in pin withdrawal. Quality and safety issues are very likely to occur, and may even lead to defective products flowing into customers. Summary of the invention
[0003] To solve the above problems, the present invention provides a dual-purpose, replaceable inner core, multi-key low-voltage connector, the inner core is movably connected in the plug shell, so that low-voltage connectors with different pin numbers can share a set of plug shells and connection device molds, thereby avoiding the purchase of a large number of connectors in production, reducing material costs, and ensuring delivery rates. At the same time, it also greatly saves the mold development cost of the connector.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a dual-purpose multi-key low-voltage connector with a replaceable inner core, comprising a plug shell, a matching sealing ring is arranged in the plug shell, a plug female terminal is arranged in the matching sealing ring, the upper end of the plug female terminal is connected to the plug shell, the lower end of the plug female terminal is connected to the inner liner, and the inner liner is movably connected to the plug shell; the plug shell is matched and connected to a connecting device, and a socket male terminal is arranged in the connecting device.
[0005] As a preferred technical solution of the present invention: the connecting device is a board-end socket shell; the board-end socket shell includes a first accommodating cavity, which is inserted into the inner cavity of the plug shell; the first accommodating cavity is used to place the male terminal of the socket.
[0006] As a preferred technical solution of the present invention: a connecting block is arranged on the outer side of the first accommodating cavity, and a panel with a plate end opening is movably connected to the connecting block.
[0007] As a preferred technical solution of the present invention: a plate end sealing ring is arranged at the lower end of the plate end opening panel.
[0008] As a preferred technical solution of the present invention: the connecting device is a wire end matching shell, and a second accommodating cavity is arranged in the wire end matching shell; the second accommodating cavity is inserted into the inner cavity of the plug shell, and the second accommodating cavity is used to place the male terminal of the socket.
[0009] As a preferred technical solution of the present invention: a wire end fixing lock buckle is provided on the wire end matching housing.
[0010] As a preferred technical solution of the present invention: a plurality of fool-proofing slots are arranged in the plug housing; and a fool-proofing block matching with the plurality of fool-proofing slots is arranged in the connecting device.
[0011] As a preferred technical solution of the present invention: a matching secondary lock is provided on the plug housing.
[0012] The present invention has the following beneficial effects: 1. The inner tank is movably connected to the plug shell, so that low-voltage connectors with different pin numbers can share a set of plug shells and connection device molds, thereby avoiding the purchase of a large number of connectors in production, reducing material costs and ensuring delivery rates. At the same time, it also greatly saves the cost of connector mold development.
[0013] 2. The setting of fool-proof card slots and fool-proof blocks greatly reduces the probability of workers inserting the wrong connector and improves work efficiency.
[0014] 3. Good waterproof performance shortens the production line process.
[0015] 4. The setting of the first buckle reduces the risk of pin return during the quality inspection process, greatly avoids the defective rate of products, and ensures the delivery rate of products. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the explosion structure of the present invention; Figure 2 It is a schematic diagram of the overall structure when the plug housing and the board-end socket housing are matched; Figure 3 for Figure 2 The main view of Figure 4 for Figure 2 A top view of Figure 5 for Figure 2 Left view of; Figure 6 The structural diagram when it is in the A key position; Figure 7 The structural diagram for the B key position; Figure 8 Schematic diagram of the structure when it is C bond position; Fig. 9 The structural diagram for the D key position; Fig.10 The structural diagram for the E key position; Fig.11 It is a schematic diagram of the overall structure when the plug housing and the wire end housing are matched; Fig.12 for Fig.11 The main view of Fig.13 for Fig.11 A top view of Fig.14 for Fig.11 Left view of; Figure 1-Figure 14 Among them, 1. plug shell; 2. matching sealing ring; 3. plug female terminal; 4. liner; 5. connecting device; 6. socket male terminal; 7. female terminal; 8. male terminal; 9. waterproof plug; 10. first buckle; 11. foolproof slot; 12. foolproof block; 13. identification area; 14. buckle; 15. slot; 16. matching secondary lock; 17. board-end socket shell; 18. first accommodating chamber; 19. connecting block; 20. board-end opening panel; 21. bolt through hole; 22. knurled nut; 23. fastening bolt; 24. board-end sealing ring; 25. wire end matching shell; 26. second accommodating chamber; 27. wire end fixing lock; 28. slide rail; 29. slide groove; 30. clamp head. DETAILED DESCRIPTION
[0017] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0018] Embodiment 1
[0019] like Figure 1-Figure 5As shown, an embodiment of the present invention provides a dual-purpose, replaceable inner core multi-key low-voltage connector, including a plug housing 1, a matching sealing ring 2 is arranged in the plug housing 1, and the matching sealing ring 2 makes the plug housing 1 and the connecting device 5 match, and the overall waterproof effect is achieved. A plug female terminal 3 is arranged in the matching sealing ring 2, and the plug female terminal 3 is composed of a plurality of female terminals 7. The plug female terminal 3 is used to connect the wire, and the lower end of the plug female terminal 3 is connected to the inner liner 4, and the inner liner 4 is movably connected in the plug housing 1; the plug housing 1 is matched and connected with the connecting device 5, and a socket male terminal 6 is arranged in the connecting device 5. The socket male terminal 6 is composed of the same number of male terminals 8 as the female terminals 7. The socket male terminal 6 cooperates with the plug female terminal 3 to play the role of signal and current transmission. The movable connection of the inner liner 4 allows low-voltage connectors with different pin numbers to share a set of plug housing 1 and connecting device 5 molds, thereby avoiding the purchase of a large number of connectors in production, reducing material costs, and ensuring delivery rates. At the same time, it also greatly saves the mold development cost of the connector.
[0020] The male terminal 8 and the female terminal 7 are provided with waterproof plugs 9. First, use a machine to pass the waterproof plugs 9 onto the wire inside the terminal, and then use a terminal crimping machine to crimp the terminal equipped with the waterproof plugs 9 onto the wire. The female terminal is provided with a first buckle 10, and the first buckle 10 is an inverted buckle. The inner liner 4 is provided with an inverted buckle structure that matches the first buckle 10, so that the female terminal 7 can be firmly fixed in the plug, which can prevent the female terminal 7 from being pinned out. At the same time, the inner liner 4 also serves as a sealing cover plate for the female terminal 3 of the plug. The number of inner core holes of the inner liner 4 is determined according to the number of female terminals 7. For example, if 12 cores are changed to 8 cores, the four holes on both sides must be blocked, and at the same time, the hole position number needs to be moved accordingly.
[0021] At least one foolproof slot 11 is provided in the plug housing 1, and a foolproof block 12 matching the foolproof slot 11 is provided on the connecting device 5, and the foolproof block 12 is clamped in the foolproof slot 11. Figure 6-Figure 10As shown, in this embodiment, two foolproof card slots 11 are preferably used, and the two foolproof card slots 11 are set at different positions in the plug housing 1 to distinguish different key positions. In this embodiment, five key positions are preferably used, namely A key position, B key position, C key position, D key position, and E key position. The setting of the foolproof card slot 11 and the foolproof block 12 allows only the plug housing 1 with the same key position to cooperate with the connecting device 5, preventing the plug housing 1 and the connecting device 5 with different pin numbers from being misplugged. In order to improve the work efficiency of workers and further reduce the possibility of misplugging, an identification area 13 is set on the surface of the plug housing 1 and the connecting device 5, and the identification area 13 is used to mark the name of the key position. The card slot 15 is provided on the plug housing 1, and the buckle 14 is provided on the connecting device 5. When the connecting device 5 and the plug housing 1 are snapped together, the buckle 14 is snapped into the card slot 15. A secondary lock 16 is provided on the slot 15 so that the connecting device 5 and the plug housing 1 can be firmly locked after being matched. The secondary lock 16 must be slid to separate the connecting device 5 and the plug housing 1.
[0022] The connecting device 5 is a board-end socket shell 17; the board-end socket shell 17 includes a first accommodating chamber 18, which is inserted into the inner cavity of the plug shell 1; the first accommodating chamber 18 is used to place the socket male terminal 6. In order to improve the waterproof performance, a connecting block 19 is provided on the outside of the first accommodating chamber 18, and a board-end opening panel 20 is movably connected to the connecting block 19. In this embodiment, the connecting block 19 is preferably connected to the board-end opening panel 20 by bolts, and a bolt through hole 21 is injection-molded on the connecting block 19, and a knurled nut 22 is provided in the bolt through hole 21. A bolt hole is provided on the board-end opening panel 20, and the connecting block 19 can be more firmly connected to the board-end opening panel 20 by tightening the bolt 23. A board-end sealing ring 24 is provided at the lower end of the board-end opening panel 20, and the board-end sealing ring 24 is tightly fitted with the board-end opening panel 20, further improving the waterproof performance. This ensures the waterproofness of the product and shortens the production line process.
[0023] Embodiment 2
[0024] like Figure 11-Figure 14As shown, the difference from the first embodiment is that the connection device 5 is a wire end matching shell 25, and a second accommodating cavity 26 is arranged in the wire end matching shell 25; the second accommodating cavity 26 is inserted into the inner cavity of the plug shell 1, and the second accommodating cavity 26 is used to place the socket male terminal 6. The wire end matching shell 25 can make the entire wire harness line-to-line, and can achieve the overall waterproof effect without being installed on any panel. A wire end fixing lock 27 is arranged on the wire end matching shell 25. A slide groove 29 is arranged on the wire end fixing lock 27, and a clamping head 30 is arranged on the slide groove 29. A slide rail 28 is arranged on the wire end matching shell 25, and the slide groove 29 is slidably connected to the slide rail 28, and the clamping head 30 is used to clamp in the gap. The setting of the wire end fixing lock 27 allows the entire connector to be installed in any place with a gap, and it can play a fixing role without locking screws.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, 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, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A dual-purpose, replaceable inner core, multi-key low-voltage connector, characterized in that: The invention comprises a plug shell (1), a matching sealing ring (2) is arranged in the plug shell (1), a plug female terminal (3) is arranged in the matching sealing ring (2), the upper end of the plug female terminal (3) is connected to the plug shell (1), the lower end of the plug female terminal (3) is connected to an inner shell (4), and the inner shell (4) is movably connected to the plug shell (1); the plug shell (1) is matched and connected to a connecting device (5), and a socket male terminal (6) is arranged in the connecting device (5).
2. A dual-purpose, replaceable inner core multi-key low-voltage connector according to claim 1, characterized in that: The connecting device (5) is a board-end socket shell (17); the board-end socket shell (17) comprises a first accommodating cavity (18), the first accommodating cavity (18) being inserted into the inner cavity of the plug shell (1); the first accommodating cavity (18) is used to place the socket male terminal (6).
3. A dual-purpose, replaceable inner core multi-key low-voltage connector according to claim 1, characterized in that: A connecting block (19) is provided on the outside of the first accommodating cavity (18), and a plate end opening panel (20) is movably connected to the connecting block (19).
4. A dual-purpose, replaceable inner core multi-key low-voltage connector according to claim 3, characterized in that: A plate end sealing ring (24) is provided at the lower end of the plate end opening panel (20).
5. A dual-purpose, replaceable inner core, multi-key low-voltage connector according to claim 1, characterized in that: The connecting device (5) is a wire end matching housing (25), wherein a second accommodating cavity (26) is arranged in the wire end matching housing (25); the second accommodating cavity (26) is inserted into the inner cavity of the plug housing (1), and the second accommodating cavity (26) is used to place the socket male terminal (6).
6. A dual-purpose, replaceable inner core multi-key low-voltage connector according to claim 5, characterized in that: The wire end matching housing (25) is provided with a wire end fixing lock buckle (27).
7. A dual-purpose, replaceable inner core multi-key low-voltage connector according to claim 1, characterized in that: A plurality of foolproof slots (11) are provided in the plug housing (1); and a foolproof block (12) matching the plurality of foolproof slots (11) is provided in the connecting device (5).
8. A dual-purpose, replaceable inner core, multi-key low-voltage connector according to claim 1, characterized in that: The plug housing (1) is provided with a matching secondary lock buckle (16).