A quick plug connector and assembly method thereof

Abstract

The present invention relates to the field of connectors, and in particular to a quick plug-in connector and an assembly method thereof. It comprises a plug-in connection terminal and a board assembly; the terminal has a connection portion and a plug-in portion, the connection portion is connected to the cable of an external device, the plug-in portion has an axial opening, and the inner wall is electrically connected to the board assembly; the board assembly comprises a circuit board, on which a drum spring, a first connector and a second connector are fixed; in a plugged state, the drum spring abuts coaxially with the inner wall of the plug-in portion; the first connector has a mounting portion and a first limiting portion, the drum spring is sleeved on the outer wall of the mounting portion, the first limiting portion is formed on the radially outer side of the mounting portion, one end face of the first limiting portion is constructed as a first limiting end and abuts with the end of the terminal close to the circuit board; the second connector is mounted inside the first connector, and is forked at one end away from the circuit board to form a Y-shaped structure, with a pair of second limiting portions that can be approached or moved away.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a quick plug-in connector and an assembly method thereof. Background Art

[0002] In the field of electronic equipment, connectors are widely used and vital as key components for signal transmission and power connection between devices. However, most traditional connectors rely on fasteners such as bolts to connect external cables to devices. This traditional connection method is not only cumbersome to operate and increases the complexity of connection and disconnection, but also prone to loosening due to vibration or external forces during long-term use. Once the connection is unstable, it may cause interruption of signal transmission or poor power connection, which in turn affects the normal operation of the entire electronic device. Summary of the invention

[0003] The purpose of the present invention is to provide a quick plug-in connector and an assembly method thereof, so as to solve the problem of cumbersome operation of connecting and disconnecting the conventional connector in the prior art.

[0004] The technical solution of the present invention is: a quick plug-in connector, comprising a plug-in connection terminal and a board assembly;

[0005] The wiring terminal comprises a wiring portion and a plug-in portion, wherein the wiring portion is connected to a cable of an external device, and the plug-in portion has an axial opening, and an inner wall thereof is electrically connected to the board assembly;

[0006] The board assembly includes a circuit board, on which a drum spring, a first connector and a second connector are fixed; in a plug-in state, the drum spring is coaxially abutted against an inner wall of the plug-in portion;

[0007] The first connector has a mounting portion and a first limiting portion, the drum spring is sleeved on the outer wall of the mounting portion, the first limiting portion is formed on the radially outer side of the mounting portion, and one end surface of the first limiting portion is configured as a first limiting end and abuts against an end of the wiring terminal close to the circuit board;

[0008] The second connecting member is installed inside the first connecting member, and is forked at one end away from the circuit board to form a Y-shaped structure, with a pair of second limiting parts that can be approached or moved away, and the end of any second limiting part is provided with a guide end and a second limiting end in the plug-in direction of the plug-in part; during the plug-in action, the guide end slides from one end of the plug-in part close to the circuit board to the other end, and then the second limiting end limits the axial movement of the plug-in part.

[0009] Preferably, a slot is formed between the first limiting portion and the mounting portion, and the drum spring is inserted into the slot; after one end of the wiring terminal abuts against the first limiting end, the distance between the other end and the second limiting end is smaller than the distance between the drum spring and the second limiting end.

[0010] Preferably, one end of the drum spring is slotted around its own axis to form a plurality of insertion ends; a slot for the insertion end to pass through is provided at the bottom end of the slot corresponding to the insertion end, and an undercut is provided at the portion where the insertion end contacts the slot.

[0011] Preferably, the first limiting portion is provided with a limiting groove in a radial direction around its own axis, and the connecting terminal is provided with a limiting protrusion corresponding to the limiting groove, and the limiting groove cooperates with the limiting protrusion to limit the rotation of the connecting terminal.

[0012] Preferably, the first connecting member is provided with a through groove along its own axis, and the second connecting member is installed in the through groove; the second connecting member is provided with a clamping portion, and the first connecting member is provided with a clamped portion in coordination with the clamping portion, and the clamping portion is clamped with the clamped portion; and the inner wall of the through groove has a step, and the second connecting member has an end face abutting the step.

[0013] Preferably, a convex button is fixed to one end of the second limiting portion away from the circuit board, and the convex button protrudes from the top end of the first connecting member; a pair of convex buttons are squeezed close to each other so that a pair of second limiting ends are away from the plug-in path of the terminal block.

[0014] Preferably, the second limiting portion has a rounded corner at the root, and the rounded corner allows the root of the second limiting portion to have a space capable of bending inwards.

[0015] An assembly method for a quick-plug connector comprises the following steps:

[0016] Step 1: Sleeve the drum spring onto the mounting portion of the first connecting member, and ensure that the insertion end of the bottom end of the drum spring faces the notch opened in the slot and corresponds to it; then press the drum spring downward so that the insertion end still has a certain length after passing through the notch, and ensure that the limiting protrusion is engaged with the limiting groove;

[0017] Step 2: insert the tail end of the Y-shaped structure of the second connecting member into the through groove opened in the middle of the first connecting member, and continue to push until the engaging portion on the second connecting member engages with the engaged portion in the first connecting member and abuts against the step surface of the inner wall of the first connecting end;

[0018] Step 3: Insert the portion of the drum spring that passes through the slot into the interface reserved on the circuit board, and fix the drum spring to the circuit board by welding; thus, the assembly of the board assembly is completed;

[0019] Step 4: Place the connecting end of the external device cable on the wiring part, and then bend the wiring part by riveting and rivet it to the cable;

[0020] Step 5: Insert the plug-in part into the guide end until one end face of the plug-in part abuts against the first limiting end, and the limiting groove and the limiting protrusion cooperate synchronously, and the second limiting end limits the other end face of the plug-in part.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) The present invention realizes the rapid electrical connection between the external device cable and the circuit board by plugging the terminal block and the board assembly. This connection method is faster than the traditional method of connecting the cable and the circuit board by fasteners such as bolts, and is convenient for rapid disconnection during subsequent maintenance, reducing the difficulty of operation and time cost.

[0023] (2) Multiple limiting and fixing mechanisms are used between the terminal block and the board assembly, including the first connector supporting and positioning the drum spring and the terminal block, and the second connector clamping and fixing the terminal block. These designs ensure the stability and reliability of the connector during long-term use and avoid connection failure caused by looseness or vibration.

[0024] (3) The design of the second connector also takes into account protection against external force impact. When an external force acts on the second connector, it will first abut against the sturdy terminal and absorb the external force through the terminal and the first connector, thereby protecting the relatively fragile drum spring from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1 This is a structural diagram of a quick plug-in connector according to the present invention;

[0027] Figure 2 A cross-sectional view of a quick plug connector according to the present invention;

[0028] Figure 3 This is a structural diagram of the drum spring of the present invention;

[0029] Figure 4 This is a structural diagram of the first connecting member of the present invention;

[0030] Figure 5 is a cross-sectional view of the first connecting member of the present invention;

[0031] Figure 6 This is a structural diagram of the second connecting member of the present invention;

[0032] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0033] Figure 8 for Figure 1 Enlarged view of point B in the middle;

[0034] Wherein: 1. terminal block, 11. wiring portion, 12. plug-in portion, 121. limiting protrusion, 2. board assembly, 21. circuit board, 22. drum spring, 221. insertion end, 222. undercut, 23. first connecting member, 231. mounting portion, 232. slot, 233. first limiting portion, 2331. first limiting end, 2332. limiting groove, 234. through groove, 2341. engaged portion, 2342. step surface, 24. second connecting member, 241. engaging portion, 242. second limiting portion, 2421. guide end, 2422. second limiting end, 243. convex button. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with specific embodiments:

[0036] like Figure 1 and Figure 2 As shown, a quick-plug connector includes a terminal block 1 and a board assembly 2. The terminal block 1 is used to connect the cable of an external device and is connected to the board assembly 2 by plugging, so that the cable of the external device can be electrically connected to the circuit board 21 in the board assembly 2.

[0037] The terminal block 1 includes an integrally formed wiring portion 11 and a plug-in portion 12. The wiring portion 11 is used to connect the cable of an external device and is formed into a curved sheet-like structure. The cable of the external device is placed in the wiring portion 11. The wiring portion 11 is bent so that the wiring portion 11 and the cable of the external device are riveted. In other embodiments of the present application, the cable of the external device can also be directly welded to the wiring portion 11 for fixation.

[0038] The plug-in portion 12 is opened along the axial direction to form a cylindrical structure. Figure 3 - Figure 6 As shown, the board assembly 2 includes a drum spring 22 fixed on the circuit board 21, and the plug-in part 12 can be sleeved on the drum spring 22, so that the terminal 1 enters a plug-in state. In this state, the outer wall of the drum spring 22 abuts against the inner wall of the plug-in part 12, so that the cable, the wiring part 11, the plug-in part 12, the drum spring 22, and the circuit board 21 form a current path.

[0039] In order to maintain a stable connection between the connecting terminal 1 and the drum spring 22 , and between the drum spring 22 and the circuit board 21 , the board assembly 2 is further provided with a first connecting member 23 and a second connecting member 24 .

[0040] Regarding the first connecting member 23, Figure 4 and Figure 5 As shown, the first connector 23 has a mounting portion 231. The mounting portion 231 is configured as a rotating body structure, and the drum spring 22 is sleeved on the outer wall of the mounting portion 231, and the inner wall of the drum spring 22 is supported by the mounting portion 231 to prevent the drum spring 22 from being damaged during the plugging process of the terminal 1.

[0041] The outer side of the mounting portion 231 is formed with a slot 232 and a first limiting portion 233 in sequence along the radial direction. The drum spring 22 is inserted into the slot 232. The slot 232 limits the movement of the drum spring 22 toward the circuit board 21 (downward). Figure 3 As shown, the bottom end of the drum spring 22 is provided with multiple grooves around its own axis, so that the bottom end of the drum spring 22 forms multiple insertion ends 221 protruding along the axial direction, and the bottom end of the slot 232 is provided with a through notch corresponding to the insertion end 221. After the drum spring 22 is inserted into the slot 232, the insertion end 221 will penetrate the corresponding notch, thereby limiting the rotation of the drum spring 22 around its own axis. In addition, both sides of each insertion end 221 are provided with undercuts 222, and the undercuts 222 are set as a right-angled trapezoidal structure with the right-angle side facing upward. After the insertion end 221 is inserted into the notch, the undercuts 222 squeeze the two sides of the notch, increase the friction between the insertion end 221 and the notch, thereby limiting the upward withdrawal movement of the drum spring 22, and preventing the drum spring 22 from loosening during use.

[0042] A horizontal end surface of the first limiting portion 233 is configured as a first limiting end 2331 that abuts against an end of the connecting terminal 1 close to the circuit board 21 when the connecting terminal 1 is plugged in. The first limiting end 2331 provides a vertical support force for the connecting terminal 1 in the plugged in state. Figure 1 and Figure 8 As shown, the first limiting portion 233 is radially provided with a plurality of limiting grooves 2332 around its own axis, and any limiting groove 2332 is set as a tooth-shaped structure. A limiting protrusion 121 is protruded from the bottom end of the plug-in portion 12 corresponding to the limiting groove 2332, and the limiting protrusion 121 is engaged with any limiting groove 2332, thereby limiting the movement of the terminal 1 around its own axis.

[0043] In this embodiment, the first connecting member 23 is used to support and position the drum spring 22 and the connecting terminal 1 , so the first connecting member 23 is made of an elastic insulating material such as rubber.

[0044] Regarding the second connecting member 24, Figure 6 As shown, the second connector 24 is inserted into a through slot 234 provided along the axis of the first connector 23 , and is used to clamp the connecting terminal 1 after the connecting terminal 1 is installed, thereby ensuring a stable connection between the external cable and the circuit board 21 .

[0045] The middle part of the second connecting member 24 is provided with a clamping portion 241, and the through groove 234 of the first connecting member 23 is provided with a clamped portion 2341. In addition, the inner wall of the through groove 234 of the first connecting member 23 has a step surface 2342, and the second connecting member 24 has an end surface that can abut against the step surface 2342. When the second connecting member 24 is inserted into the first connecting member 23, the clamping portion 241 is clamped with the clamped portion 2341 to limit the upward movement of the first connecting member 23. At the same time, one end surface of the second connecting member 24 abuts against the step surface 2342 to limit the downward movement of the second connecting member 24, so as to realize the assembly and fixation of the second connecting member 24 and the first connecting member 23.

[0046] The second connector 24 is forked at one end away from the circuit board 21 to form a Y-shaped structure, and the two branches of the Y-shaped structure form a group of second limiting portions 242 that can approach or move away from each other, and the end of any second limiting portion 242 has a guide end 2421 and a second limiting end 2422 in sequence in the plug-in direction of the plug-in portion 12. The guide end 2421 is constructed as an inclined surface, and during the plug-in action of the plug-in portion 12, the guide end 2421 first abuts against the end of the plug-in portion 12, that is, the inclined surface abuts against the end of the opening of the plug-in portion 12, so that the pair of second limiting portions 242 elastically shrink inwardly, and as the plug-in action continues, the guide end 2421 enters the opening of the plug-in portion 12 and abuts and slides against the inner wall of the plug-in portion 12. Subsequently, the guide end 2421 passes through the other end of the plug-in portion 12, disengages from the plug-in portion 12, and releases the elastic force, so that the second limit end 2422 constructed as a horizontal plane is parallel to the top of the plug-in portion 12 and has an overlapping axial projection, so that the top of the plug-in portion 12 will be blocked by the second limit end 2422 after a small upward movement, and then cooperates with the first limit portion 233 to achieve the clamping of the wiring terminal 1. A rounded corner is provided at the root of the second limit portion 242, that is, at the bifurcation of the Y-shaped structure, so that the root of the second limit portion 242 has a relatively narrow width dimension, thereby facilitating the inward contraction movement of a pair of second limit portions 242.

[0047] In addition, if Figure 7 As shown, when the second limiting portion 242 clamps and fixes the connection terminal 1, the distance between the second limiting end 2422 and the top of the plug-in portion 12 is smaller than the distance between the second limiting end 2422 and the top of the drum spring 22. With this arrangement, when an external force acts on the second connecting member 24 in the axial direction, the second connecting member 24 will first abut against the solid connection terminal 1, and transmit the external force to the elastic first connecting member 23 through the connection terminal 1 to absorb the external force. In this process, the second connecting member 24 will not have direct contact with the drum spring 22, so that the relatively fragile drum spring 22 will not be damaged when subjected to external force impact.

[0048] When the connection terminal 1 needs to be disconnected from the board assembly 2, the pair of second limiting portions 242 need to be pulled toward each other so that the second limiting ends 2422 enter the opening of the plug-in portion 12, and then the connection terminal 1 is pulled upward. Therefore, in order to facilitate operation, a convex button 243 is fixed to the top of the pair of second limiting portions 242, and the convex button 243 protrudes from the top of the first connecting member 23. The two sides of the pair of convex buttons 243 that are away from each other can be clamped by fingers. By squeezing the pair of convex buttons 243 with fingers, the pair of second limiting ends 2422 can be driven to approach each other, thereby keeping them away from the plug-in path of the connection terminal 1.

[0049] The assembly and installation steps for this application are as follows:

[0050] Step 1, assembly of drum spring 22 and first connector 23: Sleeve drum spring 22 on mounting portion 231 of first connector 23. During this process, pay attention to the direction of insertion end 221 of drum spring 22, and ensure that they face the slots in slot 232 and correspond to the slots one by one. After confirming that insertion end 221 corresponds to the slots, gently press down drum spring 22. During the press-fitting process, ensure that insertion end 221 can smoothly pass through the slots and still maintain a certain length after passing through, so as to be connected to circuit board 21 in the subsequent steps.

[0051] Step 2, assembling the second connecting member 24 and the first connecting member 23: insert the tail end of the Y-shaped structure of the second connecting member 24 into the through groove 234 opened in the middle of the first connecting member 23, and continue to push until the engaging portion 241 on the second connecting member 24 engages with the engaged portion 2341 in the first connecting member 23 and abuts against the step surface 2342 of the inner wall of the first connecting end.

[0052] Step 3, assembling the drum spring 22 and the circuit board 21: insert the portion of the drum spring 22 that passes through the slot 232 into the interface reserved on the circuit board 21, and fix the drum spring 22 and the circuit board 21 by welding; at this point, the assembly of the board assembly 2 is completed.

[0053] Step 4: Assembling the wiring part 11 and the external cable: placing the connecting end of the external device cable on the wiring part 11, and then bending the wiring part 11 by riveting and riveting it to the cable.

[0054] Step 5, assembly of the wiring terminal 1 and the board assembly 2: insert the plug part 12 into the guide end 2421 until one end face of the plug part 12 abuts against the first limiting end 2331, and the limiting groove 2332 cooperates with the limiting protrusion 121, and the second limiting end 2422 limits the other end face of the plug part 12. At this point, the connection between the cable of the external device and the circuit board 21 is completed.

[0055] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A quick plug connector, characterized in that: It comprises a plug-in connection terminal (1) and a board assembly (2); The wiring terminal (1) comprises a wiring portion (11) and a plug-in portion (12), the wiring portion (11) being connected to a cable of an external device, the plug-in portion (12) being axially opened, and the inner wall of which is electrically connected to the plate assembly (2); The board assembly (2) comprises a circuit board (21), on which a drum spring (22), a first connecting member (23) and a second connecting member (24) are fixed; in a plugged state, the drum spring (22) is coaxially abutted against an inner wall of the plug-in portion (12); The first connecting member (23) comprises a mounting portion (231) and a first limiting portion (233); the drum spring (22) is sleeved on an outer wall of the mounting portion (231); the first limiting portion (233) is formed on the radially outer side of the mounting portion (231); an end surface of the first limiting portion (233) is configured as a first limiting end (2331) and abuts against an end of the connecting terminal (1) close to the circuit board (21); The second connecting member (24) is installed inside the first connecting member (23), and the end away from the circuit board (21) is forked to form a Y-shaped structure, and has a pair of second limiting portions (242) that can be moved closer or farther away, and the end of any second limiting portion (242) is provided with a guide end (2421) and a second limiting end (2422) in the plugging direction of the plug-in portion (12); during the plugging action, the guide end (2421) slides from one end of the plug-in portion (12) close to the circuit board (21) to the other end, and then the second limiting end (2422) limits the axial movement of the plug-in portion (12); A slot (232) is formed between the first limiting portion (233) and the mounting portion (231), and the drum spring (22) is inserted into the slot (232); after one end of the wiring terminal (1) abuts against the first limiting end (2331), the distance between the other end and the second limiting end (2422) is smaller than the distance between the drum spring (22) and the second limiting end (2422); The first connecting member (23) is provided with a through groove (234) along its axis, and the second connecting member (24) is installed in the through groove (234); the second connecting member (24) is provided with a clamping portion (241), and the first connecting member (23) is provided with a clamped portion (2341) in cooperation with the clamping portion (241), and the clamping portion (241) is clamped with the clamped portion (2341); and the inner wall of the through groove (234) has a step, and the second connecting member (24) has an end face abutting against the step.

2. A quick-plug connector according to claim 1, characterized in that: One end of the drum spring (22) is slotted around its own axis to form a plurality of insertion ends (221); a notch for the insertion end (221) to pass through is formed at the bottom end of the slot (232) corresponding to the insertion end (221), and an undercut (222) is provided at the portion of the insertion end (221) that contacts the notch.

3. A quick-plug connector according to claim 1, characterized in that: The first limiting portion (233) is provided with a limiting groove (2332) radially around its own axis, and the connecting terminal (1) is provided with a limiting protrusion (121) corresponding to the limiting groove (2332), and the limiting groove (2332) cooperates with the limiting protrusion (121) to limit the rotation of the connecting terminal (1).

4. A quick-plug connector according to claim 1, characterized in that: A convex button (243) is fixed to one end of the second limiting portion (242) away from the circuit board (21), and the convex button (243) is arranged to protrude from the top end of the first connecting member (23); a pair of convex buttons (243) are pressed closer to each other, so that a pair of second limiting ends (2422) are away from the plugging path of the connecting terminal (1).

5. A quick-plug connector according to claim 1, characterized in that: The second limiting portion (242) is provided with a rounded corner at the root, and the rounded corner enables the root of the second limiting portion (242) to have a space capable of bending inwards.

6. An assembly method for a quick-plug connector, using the quick-plug connector as claimed in any one of claims 2 to 5, characterized in that: The steps include: Step 1: sleeve the drum spring (22) onto the mounting portion (231) of the first connecting member (23), and ensure that the insertion end (221) at the bottom end of the drum spring (22) faces the notch provided in the slot (232) and corresponds thereto; then press the drum spring (22) downward so that the insertion end (221) still has a certain length after passing through the notch, and ensure that the limiting protrusion (121) is engaged with the limiting slot (2332); Step 2: insert the tail end of the Y-shaped structure of the second connecting member (24) into the through groove (234) opened in the middle of the first connecting member (23), and continue to push until the engaging portion (241) on the second connecting member (24) engages with the engaged portion (2341) in the first connecting member (23) and abuts against the step surface (2342) on the inner wall of the first connecting end; Step 3: insert the portion of the drum spring (22) that passes through the slot (232) into the interface reserved on the circuit board (21), and fix the drum spring (22) to the circuit board (21) by welding; thus, the assembly of the board assembly (2) is completed; Step 4: placing the connection end of the external device cable on the wiring portion (11), and then bending the wiring portion (11) by riveting and riveting it to the cable; Step 5: Insert the plug-in portion (12) into the guide end (2421) until one end surface of the plug-in portion (12) abuts against the first limiting end (2331), and the limiting groove (2332) and the limiting protrusion (121) are matched, and the second limiting end (2422) limits the other end surface of the plug-in portion (12).

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