Dupont needle connector

Abstract

The utility model relates to the technical field of connectors, in particular to a Dupont needle connector, which comprises a plurality of connector main bodies, each connector main body comprises a metal pin and a plastic shell, the plastic shell is divided into a first shell and a second shell, the first shell is provided with a first connecting groove, the groove wall of the first connecting groove is provided with a first inner groove, and the second shell is provided with a second inner groove. The first inner grooves are in friction fit with the metal pins; protruding structures matched with the inner grooves are formed on the metal pins. The second shell is located below the first shell, the second shell can move in the length direction of the metal pins, and a locking structure connected with the metal pins in a locking mode is arranged in the second shell. When the plastic shell is formed, the K-point forming function is added to automatic machine equipment, namely, the first inner groove is formed in the groove wall of the first connecting groove in the plastic shell, so that the first inner groove is matched with the protruding structure of the metal pin, the friction area is increased, the connection stability is higher, and the phenomenon that the plastic shell falls off after a product passes through a furnace at a high temperature is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a DuPont pin connector. Background Art

[0002] DuPont pin connectors are usually made of a plastic shell and metal pins. The plastic shell acts as an insulator and secures the pins, while the pins are usually made of gold-plated or tin-plated copper to ensure good conductivity.

[0003] There are many shapes, the most common being a rectangular shell with neatly arranged pins. The number of pins can vary from 2 to dozens depending on the specific needs. For example, in some simple electronic projects, you may only need a 2- or 3-pin DuPont pin connector to connect the power and signal lines.

[0004] Its working principle is to achieve electrical connections between circuit boards and between circuit boards and external devices (such as sensors, motors, etc.). When the plug and socket are connected, the pins are inserted into the corresponding jacks, and electrical signals or power are transmitted through the contact between the metals.

[0005] This connection method is easy to plug and unplug, making it convenient for assembly, debugging, and maintenance of the equipment. For example, in electronic experiments, using DuPont pins to connect the experimental module and the control motherboard allows for quick circuit construction and testing, and easy disassembly after testing.

[0006] The existing insulating shell is put on the metal pin. When encountering high temperature, the insulating shell will expand thermally, and a certain gap will be created between the insulating shell and the metal pin. At this time, the insulating shell will fall off, resulting in the metal pin not being protected by the insulating shell, affecting its use. Utility Model Content

[0007] The purpose of the utility model is to provide a DuPont pin connector to address the deficiencies of the prior art.

[0008] To achieve the above purpose, the technical solution of the utility model is as follows:

[0009] A DuPont pin connector includes a plurality of connector bodies, wherein the connector bodies include metal pins and a plastic shell, wherein the plastic shell is divided into a first shell and a second shell.

[0010] The first shell is formed with a first connecting groove, and the wall of the first connecting groove is formed with a first inner groove, and the first inner groove is frictionally matched with the metal pin; the metal pin is formed with a protruding structure that cooperates with the inner groove; the second shell is located below the first shell, and the second shell can move along the length direction of the metal pin, and a locking structure connected to the metal pin is provided in the second shell.

[0011] Further: the locking structure includes an active cavity formed in the metal pin, the active cavity is formed with a radial groove along the path direction, the radial groove is installed with an outward-popped engaging protrusion, the second shell is formed with a second connecting groove, the second connecting groove wall is formed with a second inner groove, and the second inner groove is for a part of the engaging protrusion to be embedded.

[0012] Furthermore: the radial groove includes an outer groove and an inner groove, a circular hole groove is formed between the outer groove and the inner groove, and the cross-sectional area of ​​the inner groove and the outer groove is larger than the cross-sectional area of ​​the circular hole groove.

[0013] Further: the interlocking protrusion includes an external block moving along the external groove, a stop block located in the internal groove, and a connecting rod formed between the external block and the stop block, the connecting rod slides along the circular hole groove, the stop block cooperates with the circular hole groove stop, and the external block cooperates with the circular hole groove stop.

[0014] Furthermore: a tension spring is provided inside the connecting rod and sleeved on the connecting rod, and the tension spring can elastically drive the outer block of the engaging protrusion to protrude radially outward.

[0015] Further: The outer block has a conical structure.

[0016] Furthermore: a fitting groove is formed on one side of the plastic shell along the length direction, and a fitting block is formed on the other side of the plastic shell along the length direction. The fitting groove and the fitting block are arranged opposite to each other, and two adjacent connector bodies are spliced ​​through the fitting groove and the fitting block.

[0017] Furthermore: the cross sections of the engaging block and the engaging groove are both isosceles trapezoids.

[0018] Furthermore: both ends of the metal pin are formed with chamfer structures.

[0019] The beneficial effects of the present invention are as follows: when molding the plastic shell, a K-point punching function is added to the automatic machine equipment, that is, a first inner groove is formed on the wall of the first connecting groove in the plastic shell, so that the first inner groove cooperates with the raised structure of the metal pin, thereby increasing the friction area, making the connection more stable, and preventing the plastic shell from falling off after the product is furnace-dried at high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the DuPont pin connector.

[0021] Figure 2 This is a schematic diagram of the structure of the DuPont pin connector from a top view.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection between the second shell of the DuPont pin connector and the metal pin, showing the tightened state.

[0023] Figure 4This is a schematic diagram of the cross-sectional structure of the connection between the second shell of the DuPont pin connector and the metal pin, showing the locked state.

[0024] Figure 5 This is a schematic cross-sectional view of the connection between the first shell and the metal pin of the DuPont pin connector.

[0025] Reference numerals include:

[0026] 1-Connector body,

[0027] 11-metal pin, 12-plastic shell, 13-first shell, 14-first connecting slot,

[0028] 15-first inner groove, 16-protrusion structure, 17-second outer shell, 18-second connecting groove,

[0029] 19- second inner groove,

[0030] 2-locking structure,

[0031] 21- fitting protrusion, 22- radial groove, 23- external groove, 24- internal groove, 25- circular hole groove,

[0032] 26-external block, 27-connecting rod, 28-stop block, 29-tension spring, 30-fitting groove,

[0033] 31-Matching block, 32-Chamfered structure DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-5 As shown, a DuPont pin connector includes multiple connector bodies 1, the connector body 1 includes metal pins 11 and a plastic shell 12, the plastic shell 12 is divided into a first shell 13 and a second shell 17, the first shell 13 is formed with a first connecting groove 14, the groove wall of the first connecting groove 14 is formed with a first inner groove 15, the first inner groove 15 is friction-fitted with the metal pins 11; the metal pins 11 are formed with a protruding structure 16 that cooperates with the first inner groove 15.

[0036] When molding the plastic shell, a K-point punching function is added to the automatic machine equipment, that is, a first inner groove 15 is formed on the groove wall of the first connecting groove 14 in the plastic shell 12, so that the first inner groove 15 cooperates with the protruding structure 16 of the metal pin 11, increasing the friction area, making the connection more stable, and preventing the plastic shell 12 from falling off after the product is furnace-dried at high temperature.

[0037] The second shell 17 is located below the first shell 13. The second shell 17 can move along the length direction of the metal pin 11 to adjust the distance from the first shell 13. When the position of the second shell 17 is different, the exposed length of the metal pin 11 is also different, which can be applied to slots of female ports of different depths. The second shell 17 is formed with a second connecting groove 18, and the groove wall of the second connecting groove 18 is formed with a second inner groove 19. A locking structure 2 for locking connection with the second inner groove 19 of the second shell 17 is provided in the metal pin 11; the locking structure 2 includes an active cavity formed in the metal pin 11, and the active cavity is formed with a radial groove 22 along the path direction. The radial groove 22 is installed with an outward-popped engaging protrusion 21, and the second inner groove 19 is for a part of the engaging protrusion 21 to be embedded; when it is necessary to adjust the distance between the first shell 13 and the second shell 17; the engaging protrusion 21 is recessed into the radial groove 22. At this time, the metal pin 11 will not have a protrusion, and the metal pin 11 can slide with the second inner groove 19 to adjust the position of the second shell 17 to achieve position adjustment.

[0038] Preferably, there are multiple engaging protrusions 21, so that the second housing 17 can be connected to the engaging protrusions 21 after being adjusted to different heights, thereby achieving locking and preventing the second housing 17 from sliding when encountering high temperatures.

[0039] Specifically, the radial groove 22 includes an outer groove 23 and an inner groove 24. A circular hole groove 25 is formed between the outer groove 23 and the inner groove 24. The cross-sectional areas of the inner groove 24 and the outer groove 23 are both larger than the cross-sectional area of ​​the circular hole groove 25. The engaging protrusion 21 includes an outer block 26 that moves along the outer groove 23, a stop block 28 located in the inner groove 24, and a connecting rod 27 formed between the outer block 26 and the stop block 28. The connecting rod 27 slides along the circular hole groove 25, and the stop block 28 stops the circular hole groove 25. The outer block 26 also stops the circular hole groove 25. In this embodiment, when the second shell 17 is locked with the metal pin 11, the external block 26 will radially extend outward, and the stop block 28 located in the internal groove 24 will press against the end of the internal groove 24 to prevent the entire interlocking protrusion 21 from falling off radially; at this time, the external block 26 will be interlocked and connected with the second inner groove 19 of the second connecting groove 18 to achieve a locking effect. Conversely, when unlocked, the external block 26 will retract into the external groove 23, and the external block 26 will not enter the circular hole groove 25, preventing the entire interlocking protrusion 21 from retracting into the active cavity.

[0040] Furthermore, a tension spring 29 is provided inside the connecting rod 27 and is sleeved on the connecting rod 27. One end of the tension spring 29 is installed on the stop block 28, and the other end is installed on the outer end of the internal groove 24. The tension spring 29 can elastically drive the outer block 26 of the engaging protrusion 21 to extend radially outward; when the second shell 17 moves until the engaging protrusion 21 is radially aligned with the second inner groove 19, under the action of the tension spring 29, the engaging protrusion 21 as a whole is in a radially popping-out movement state. Due to the cooperation between the limit block and the stop of the circular hole groove 25, only the outer block 26 pops outward to be engaged with the second inner groove 19 to achieve a locked state; when unlocking, the second shell 17 is moved, and the outer block 26 will be squeezed into the outer groove 23. At this time, the second shell 17 can slide through the second connecting groove 18 and the metal pin 11 to adjust the position of the second shell 17.

[0041] Furthermore, the external block 26 has a conical structure; therefore, the external block 26 has an inclined surface. When unlocking, only a certain amount of effort is required to move the second shell 17. The external block 26 slides with the groove wall of the second inner groove 19 through the inclined surface to achieve unlocking.

[0042] An interlocking groove 30 is formed along the length direction on one side of the plastic shell 12, and an interlocking block 31 is formed along the length direction on the other side of the plastic shell 12. The interlocking groove 30 and the interlocking block 31 are arranged opposite to each other, and two adjacent connector bodies 1 are spliced ​​together through the interlocking groove 30 and the interlocking block 31; multiple metal pins 11 are simultaneously plugged into the female socket for conductive connection.

[0043] Furthermore, the cross-sections of the engaging block 31 and the engaging groove 30 are both isosceles trapezoids. After the multiple connector bodies 1 are spliced ​​together, they are not easy to fall off. The two adjacent connection bodies can only be disassembled by moving the engaging groove 30 and the engaging block 31 apart in the length direction, thereby improving the stability of the connection.

[0044] Furthermore, chamfered structures 32 are formed at both ends of the metal pin 11. The chamfered structures 32 can facilitate the metal pin 11 to be inserted into the port of the female connector, reduce the phenomenon of bumping, and prevent the metal pin 11 from bending.

[0045] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0046] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A DuPont pin connector, comprising a plurality of connector bodies, each of which comprises metal pins and a plastic housing, characterized in that: The plastic shell is divided into a first shell and a second shell. The first shell is formed with a first connecting groove, and the wall of the first connecting groove is formed with a first inner groove, and the first inner groove is frictionally matched with the metal pin; the metal pin is formed with a protruding structure that cooperates with the first inner groove; the second shell is located below the first shell, and the second shell can move along the length direction of the metal pin, and a locking structure connected to the metal pin is provided in the second shell.

2. The DuPont pin connector according to claim 1, characterized in that: The locking structure includes an active cavity formed in the metal pin, the active cavity is formed with a radial groove along the path direction, the radial groove is installed with an outward-popped engaging protrusion, the second shell is formed with a second connecting groove, the second connecting groove wall is formed with a second inner groove, and the second inner groove is for a part of the engaging protrusion to be embedded.

3. The DuPont pin connector according to claim 2, characterized in that: The radial groove includes an outer groove and an inner groove, a circular hole groove is formed between the outer groove and the inner groove, and the cross-sectional areas of the inner groove and the outer groove are both larger than the cross-sectional area of ​​the circular hole groove.

4. The DuPont pin connector according to claim 3, characterized in that: The engaging protrusion includes an external block moving along the external groove, a stop block located in the internal groove, and a connecting rod formed between the external block and the stop block. The connecting rod slides along the circular hole groove, the stop block cooperates with the circular hole groove stop, and the external block cooperates with the circular hole groove stop.

5. The DuPont pin connector according to claim 4, characterized in that: A tension spring sleeved on the connecting rod is provided inside the connecting rod, and the tension spring can elastically drive the outer block of the engaging protrusion to protrude radially outward.

6. The DuPont pin connector according to claim 5, characterized in that: The outer block has a conical structure.

7. The DuPont pin connector according to claim 1, characterized in that: A fitting groove is formed on one side of the plastic shell along the length direction, and a fitting block is formed on the other side of the plastic shell along the length direction. The fitting groove and the fitting block are arranged opposite to each other, and two adjacent connector bodies are spliced ​​together through the fitting groove and the fitting block.

8. The DuPont pin connector according to claim 7, characterized in that: The cross sections of the engaging block and the engaging groove are both isosceles trapezoidal.

9. The DuPont pin connector according to claim 8, characterized in that: Both ends of the metal pin are respectively formed with chamfered structures.

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