Electrical connection device

Abstract

The utility model provides an electric connection device, which comprises a circuit board, a connector arranged on the circuit board and a fixing mechanism matched with the connector, the connector is provided with an insulating body and a plurality of metal terminals protruding out of the insulating body, the insulating body is provided with a butt joint surface facing the fixing mechanism, and the fixing mechanism is arranged on the butt joint surface. A slot is formed between the butt joint surface and the fixing mechanism, and the metal terminal protrudes into the slot to be matched with a flexible board in a crimping manner. According to the electric connection device, the structures of the connector and the fixing mechanism are optimized, and the limiting cooperation between the connector and the fixing mechanism is utilized to form the slot for rapid insertion and extraction of the flexible board, so that the electric connection device is simple in overall structure and convenient to use, the flexible board does not need to be crimped by arranging a rotary pressing plate, rapid insertion and extraction of the flexible board can be realized for terminal equipment manufacturers, and the production cost is reduced. And the tedious operation of overturning the rotary pressing plate is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to an electrical connection device. Background Art

[0002] Flexible printed circuit FPC (Flexible Printed Circuit) is a commonly used component in digital products such as mobile phones and computers. It has good flexibility, light weight and thin thickness. Similar components include flexible flat cable FFC (Flexible Flat Cable). Both components belong to flexible soft boards and have similar usage scenarios and functional uses. In actual usage scenarios, both flexible printed circuit FPC and flexible flat cable FFC need to be electrically connected to other components through electrical connectors. For the convenience of description, flexible printed circuit FPC and flexible flat cable FFC are collectively referred to as soft boards / soft rows. Existing soft board electrical connectors usually include an insulating body, terminals accommodated in the insulating body, and a transfer plate pivotally matched with the insulating body. Before the soft board is inserted into the insulating body, the transfer plate must be opened first. After the soft board is inserted, the transfer plate is flipped to press and fix the soft board on the insulating body and achieve crimping contact with the terminals. When the soft board needs to be pulled out, the transfer plate must be flipped open before the soft board can be pulled out. This is the main usage scenario of flexible board electrical connectors at present. However, in some application scenarios, the plugging and unplugging operations of the flexible board are not performed by the electrical connector manufacturer, but need to rely on the terminal equipment manufacturer to complete. For the terminal equipment manufacturers, they prefer to adopt a faster and more efficient plugging and unplugging operation to improve their assembly efficiency, but the existing electrical connector design is difficult to meet this application scenario. Utility Model Content

[0003] The technical problem solved by the utility model is to provide an electrical connection device to achieve fast plugging and unplugging of a flexible board and improve installation efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an electrical connection device, including a circuit board, a connector installed on the circuit board, and a fixing mechanism cooperating with the connector, the connector is provided with an insulating body and a plurality of metal terminals protruding from the insulating body, the insulating body is provided with a docking surface facing the fixing mechanism, a slot is formed between the docking surface and the fixing mechanism, the metal terminal protrudes into the slot to be crimped with a soft board.

[0005] Furthermore, the fixing mechanism is provided with a mating surface, a pair of limiting protrusions protruding from the mating surface, and a stop boss located between the pair of limiting protrusions. The mating surface and the docking surface are arranged opposite to each other, and the slot is formed therebetween.

[0006] Furthermore, the stopping boss is integrally connected to the pair of limiting protrusions, and the stopping boss is located at the bottom of the slot to block the soft board.

[0007] Furthermore, a mounting notch for accommodating the connector is formed on the edge of the circuit board, and a plurality of welding holes and a pair of mounting holes are formed on the surface of the circuit board. The welding holes are welded to the metal terminals, and the mounting holes are positioned and matched with the insulating body; the pair of limiting protrusions are clamped in the mounting notch.

[0008] Furthermore, the metal terminal is provided with a main body arm, an elastic contact arm extending from one end of the main body arm, and an L-shaped mounting arm extending from the other end of the main body arm, and the mounting arm includes a connecting section connected to the main body arm, a welding section opposite to the main body arm, and a widened section connecting the connecting section and the welding section.

[0009] Furthermore, the connecting section is arc-shaped, and is integrally connected to the widened section and the main body arm, and the width of the connecting section is smaller than the width of the main body arm and the widened section.

[0010] Furthermore, the welding section is parallel to the main body arm and is integrally connected to the widened section. The welding section is welded in the welding hole, and the width of the welding section is equal to that of the connecting section.

[0011] Furthermore, the width of the widened section is greater than the width of the connecting section and the welding section, and a portion of the widened section extends in a horizontal direction to be connected to the connecting section, and another portion extends in a vertical direction to be connected to the welding section.

[0012] Furthermore, the insulating body is provided with a base and a pair of wings protruding outward from both ends of the base, the base is provided with a plurality of terminal grooves for accommodating metal terminals, the docking surface is formed on the base, and a plurality of notches for the metal terminals to protrude are formed on the docking surface.

[0013] Compared with the prior art, the electrical connection device of the utility model optimizes the structure of the connector and the fixing mechanism, and utilizes the limiting cooperation between the two to form a slot for quick plugging and unplugging of the flexible board. The overall structure is simple and easy to use. There is no need to set a transfer plate to crimp the flexible board. For terminal equipment manufacturers, it can realize quick plugging and unplugging of the flexible board and eliminates the tedious operation of flipping the transfer plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the electrical connection device of the utility model when the flexible board is inserted.

[0015] Figure 2 This is a three-dimensional diagram of the electrical connection device of the utility model when no flexible board is inserted.

[0016] Figure 3 This is an exploded view of the electrical connection device of the present invention.

[0017] Figure 4 It is a cross-sectional view of the electrical connection device of the present utility model.

[0018] Figure 5 This is an exploded view of the connector of the electrical connection device of the present invention. DETAILED DESCRIPTION

[0019] See also Figures 1 to 5 As shown, the utility model provides an electrical connection device, including: a connector 100, a circuit board 200 carrying the connector 100, and a fixing mechanism 300 matched with the connector 100, the connector 100 is welded on the circuit board 200 and fixedly matched with the fixing mechanism 300, so that a soft board 400 can be inserted between the two, thereby realizing the electrical connection between the soft board 400 and the circuit board 200.

[0020] like Figure 3 As shown, the circuit board 200 is used to receive and install the connector 100, and an installation notch 201 for accommodating the connector 100 is formed on the edge of the circuit board 200, and a plurality of welding holes 202 and a pair of installation holes 203 are formed on the surface of the circuit board 200, the welding holes 202 are used to weld and fix the connector 100, and the installation holes 203 are used to fix and position the connector 100.

[0021] like Figure 5 As shown, the connector 100 includes an insulating body 10 and a metal terminal 20 mounted on the insulating body 10. The specific structure of the connector 100 is described in detail below.

[0022] The insulating body 10 is provided with a base 11, a pair of wings 12 protruding outward from both ends of the base 11, a plurality of terminal grooves 13 for accommodating the metal terminals 20 are provided in the base 11, and the base 11 is provided with a docking surface 110, a pair of side surfaces 111 located on both sides of the docking surface 110, and a mounting surface 112 for installing and inserting the metal terminals 20, the docking surface 110 faces the fixing mechanism 300 to receive the soft board 400, the terminal groove 13 respectively penetrates the docking surface 110 and the mounting surface 112, so that the metal terminal 20 can protrude from the terminal groove 13 to the docking surface 110 to dock with the soft board 400, and also allows the metal terminal 20 to be inserted into the terminal groove 13 from the mounting surface 112, preferably, the terminal groove 13 includes a notch 130 formed on the docking surface 110 and a main groove 131 located in the base 11, and the extension length of the main groove 131 is greater than the extension length of the notch 130. The wing 12 is integrally connected to the base 11, and the wing 12 is in the shape of a flat plate, and its surface is flush with the mounting surface 112 of the base 11. Preferably, the surface of the pair of wings 12 is also provided with a pair of protrusions 120, and the protrusions 120 extend along the edges of the wing 12, and a plurality of partitions 121 are distributed between the pair of protrusions 120, and a slot 122 for holding the metal terminal 20 is formed between two adjacent partitions 121, and the plurality of partitions 121 and the pair of protrusions 120 are distributed in a straight line. Preferably, the insulating body 10 is also provided with a pair of mounting posts 14, and the mounting posts 14 are formed on one side of the wing 12, and are used to be inserted into a preset mounting hole 203 on the circuit board 200, such as Figure 3 .

[0023] The metal terminal 20 is provided with a main arm 21, an elastic contact arm 22 extending from one end of the main arm 21, and a mounting arm 23 extending from the other end of the main arm 21. The main arm 21 is vertically arranged, and has protrusions 210 on both sides thereof that are clamped on the insulating body 10. The main arm 21 is clamped at the bottom position of the terminal groove 13, and the protrusions 210 are used for interference fit with the insulating body 10 to achieve fixed positioning. The mounting arm 23 is L-shaped, one end of which is integrally connected to the main arm 21, and the mounting arm 23 includes a connecting section 230 connected to the main arm 21, a welding section 231 opposite to the main arm 21, and a widening section 232 connecting the connecting section 230 and the welding section 231. The connecting section 230 is arc-shaped, and is integrally connected to the widening section 232 and the main arm 21, and the width of the connecting section 230 is smaller than the width of the main arm 21 and the widening section 232; the welding section 231 is arranged parallel to the main arm 21 and is integrally connected to the widening section 232. The welding section 231 is used to be welded to the circuit board 200 and inserted into the welding hole 202, preferably , the welding section 231 is equal to the width of the connecting section 230; the widening section 232 is connected between the connecting section 230 and the welding section 231. Preferably, the width of the widening section 232 is greater than the width of the connecting section 230 and the welding section 231, and a part of the widening section 232 extends in the horizontal direction and is connected to the connecting section 230, and the other part extends in the vertical direction and is connected to the welding section 231. That is to say, the widening section 232 is distributed in the vertical direction and the horizontal direction of the mounting arm 23 at the same time, thereby greatly improving the self-strength of the L-shaped mounting arm 23, so that the mounting arm 23 is not easily twisted and deformed during the stamping process and the assembly process. The elastic contact arm 22 extends obliquely from one end of the main arm 21 toward the docking surface 110, and protrudes out of the docking surface 110 to be crimped into contact with the soft board 400, and the elastic contact arm 22 is provided with an arc-shaped contact portion 24 protruding from the docking surface 110 and a stopper end 25 hidden in the terminal groove 13, and the stopper end 25 abuts against the insulating body 10 to prevent the elastic contact arm 22 from completely disengaging from the terminal groove 13. Preferably, the elastic contact arm 22 is provided with a bent portion 26 connected to the main arm 21.

[0024] The fixing mechanism 300 is used to cooperate with the connector 100 to clamp and fix the flexible board 400. Figure 3 and Figure 4As shown, the fixing mechanism 300 is provided with a mating surface 301, a pair of limiting convex parts 302 protruding from the mating surface 301, and a stop boss 303 located between the pair of limiting convex parts 302. The pair of limiting convex parts 302 extend in the vertical direction and are arranged parallel to each other, and are used to limit the mounting notches 201 on the circuit board 200, so as to realize the mutual limitation of the fixing mechanism 300 and the circuit board 200 in the horizontal direction, and the pair of limiting convex parts 302 are used to accommodate the insulating body. The base 11 of the body 10 is provided with a slot 304 for inserting the soft board 400, and the slot 304 is located between the pair of limiting protrusions 302 and the stop boss 303, and the stop boss 303 protrudes from the mating surface 301 and is integrally connected with the pair of limiting protrusions 302. The stop boss 303 is formed in the insertion direction of the soft board 400 to prevent the soft board 400 from being over-inserted.

[0025] like Figure 1 and Figure 4 As shown, after the electrical connection device of the present invention is assembled and matched, the connector 100 and the fixing mechanism 300 cooperate with each other to form the slot 304 therebetween, so that the soft board 400 can be inserted into the slot 304 from top to bottom to achieve quick plug-in and pull-out operations, that is, the plug-in and pull-out operations of the soft board 400 can only be performed after the connector 100 and the fixing mechanism 300 are fully matched. If the fixing mechanism 300 is missing, the soft board 400 will not be able to be plugged and pulled out with the connector 100.

[0026] In summary, the electrical connection device of the utility model optimizes the structure of the connector 100 and the fixing mechanism 300, and utilizes the limiting cooperation between the two to form a slot 304 for quick plugging and unplugging of the flexible board 400. The overall structure is simple and easy to use. There is no need to set a transfer plate to crimp the flexible board 400. For terminal equipment manufacturers, the flexible board 400 can be quickly plugged and unplugged, eliminating the tedious operation of flipping the transfer plate.

[0027] The above is only the best embodiment of the utility model and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the method disclosed above without departing from the scope of the technical solution of the utility model, which all fall within the scope of protection of the claims.

Claims

1. An electrical connection device, comprising a circuit board, a connector mounted on the circuit board, and a fixing mechanism matched with the connector, wherein the connector is provided with an insulating body and a plurality of metal terminals protruding from the insulating body, and the insulating body is provided with a mating surface facing the fixing mechanism, characterized in that: A slot is formed between the butt joint surface and the fixing mechanism, and the metal terminal protrudes into the slot to be pressed and matched with a soft board.

2. The electrical connection device according to claim 1, characterized in that: The fixing mechanism is provided with a matching surface, a pair of limiting protrusions protruding from the matching surface, and a stop boss located between the pair of limiting protrusions. The matching surface is arranged opposite to the docking surface, and the slot is formed between the two.

3. The electrical connection device according to claim 2, characterized in that: The stopping boss is integrally connected with the pair of limiting protrusions, and the stopping boss is located at the bottom of the slot to block the soft board.

4. The electrical connection device according to claim 3, characterized in that: The edge of the circuit board is formed with a mounting notch for accommodating the connector, and the surface of the circuit board is provided with a plurality of welding holes and a pair of mounting holes, the welding holes are welded to the metal terminals, and the mounting holes are positioned and matched with the insulating body; the pair of limiting protrusions are clamped in the mounting notch.

5. The electrical connection device according to claim 4, characterized in that: The metal terminal is provided with a main body arm, an elastic contact arm extending from one end of the main body arm, and an L-shaped mounting arm extending from the other end of the main body arm. The mounting arm includes a connecting section connected to the main body arm, a welding section opposite to the main body arm, and a widened section connecting the connecting section and the welding section.

6. The electrical connection device according to claim 5, characterized in that: The connecting section is arc-shaped, and is integrally connected with the widening section and the main body arm, and the width of the connecting section is smaller than the widths of the main body arm and the widening section.

7. The electrical connection device according to claim 6, characterized in that: The welding section is parallel to the main body arm and is integrally connected with the widening section. The welding section is welded in the welding hole, and the width of the welding section is equal to that of the connecting section.

8. The electrical connection device according to claim 7, characterized in that: The width of the widened section is greater than the widths of the connecting section and the welding section, and a portion of the widened section extends in a horizontal direction to be connected to the connecting section, and another portion extends in a vertical direction to be connected to the welding section.

9. The electrical connection device according to claim 8, characterized in that: The insulating body is provided with a base and a pair of wings protruding outward from both ends of the base. The base is provided with a plurality of terminal slots for accommodating metal terminals. The docking surface is formed on the base and has a plurality of notches for the metal terminals to protrude out.

Images