A card base plate piercing connector with smaller pitch

Abstract

This invention provides a card base plate piercing connector, belonging to the field of connector technology, comprising: a wire end housing, a PCB board, and a piercing terminal; the top and rear ends of the wire end housing are provided with multiple wire harness through holes at equal intervals, and the rear ends of the wire end housing are provided with multiple square grooves, which are divided into upper and lower rows, with multiple square grooves in each row being equally spaced, and adjacent square grooves in different rows being staggered; one side of the PCB board is provided with an assembly slot that matches the two front sides of the wire end housing; the piercing terminal is composed of a U-shaped spring on the front side and a U-shaped frame on the rear side, with a piercing terminal provided on the inner wall of one end of the U-shaped frame, and the piercing terminal is perpendicular to the U-shaped frame. This invention, through the special piercing terminal structure of the piercing terminal, combined with the square groove layout of the wire end housing, can reduce the spacing between two adjacent wire harness through holes, which facilitates the synchronous riveting of multiple wire harnesses, while the wire end housing does not occupy too much space, saving space.

Description

Technical Field

[0001] This invention mainly relates to the field of connector technology, and specifically to a card base plate piercing connector with smaller pitch. Background Technology

[0002] Connectors are electromechanical components that connect electrical circuits, and IDC connectors are mainly used in multi-terminal structures. Existing IDC piercing structure products are very mature and their applications are becoming increasingly widespread.

[0003] The spacing between the wire harness perforations in conventional connectors is typically 1.27mm, 2.5mm, and 5.0mm. The piercing structures of the piercing terminals inside these connectors are all arranged in parallel. On piercing connectors with a spacing of 1.27mm, the spacing between the wire harness perforations is small, which makes the wire harnesses prone to squeezing each other during use, causing loosening. On piercing connectors with a spacing of 2.5mm and 5.0mm, the spacing between the wire harness perforations is large, resulting in fewer wire harness perforations or an excessively large piercing area on the connector, occupying more space. Summary of the Invention

[0004] The present invention mainly provides a card base plate piercing connector with a smaller pitch to solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A piercing connector with a smaller spacing on the card base plate includes: a wire end housing, a PCB board, and piercing terminals; the front side of the wire end housing is provided with a slot opening, and multiple pin slots are equally spaced at the slot opening. The multiple pin slots have a sawtooth structure. Multiple wire harness through holes are equally spaced at the top and rear ends of the wire end housing. Multiple square slots are provided at the rear ends of the wire end housing. The multiple square slots are arranged in two rows, with equal spacing between slots in each row. Adjacent slots in different rows are staggered. Each square slot is located at the same vertical cross-sectional position as a wire harness through hole. The PCB board has an assembly slot on one side that matches the front two sides of the wire end housing. The piercing terminal consists of a U-shaped spring on the front side and a U-shaped frame on the rear side. A piercing terminal is provided on the inner wall of one end of the U-shaped frame. The piercing terminal is perpendicular to the U-shaped frame. The U-shaped spring, the U-shaped frame, and the piercing terminal are integrally formed. Multiple piercing terminals are installed at multiple pin slots. The piercing terminals on one side of two adjacent piercing terminals are located on the bottom right side and the top left side of the U-shaped frame, respectively. Multiple piercing terminals are aligned with multiple square slots.

[0007] Furthermore, plastic clamping bosses are provided at the top and bottom of the wire end housing in both sides of the slot opening. Notch-type anti-misfit slots and round hole-type anti-misfit slots that are adapted to the plastic clamping bosses are respectively provided at the mounting slots on both sides of the PCB board. In this invention, the plastic clamping bosses can reduce the gap between the plastic and the PCB board, and the plastic clamping bosses and the anti-misfit slots of the PCB board cooperate to play an interlocking and anti-misfit role.

[0008] Furthermore, each of the four plastic clamp boss areas has a slot on its wire end housing. One end of each of the four plastic clamp bosses is integrally formed with the rear inner wall of the slot. In this invention, the slot facilitates the external movement of the plastic clamp bosses, thereby completing the disassembly of the PCB board.

[0009] Furthermore, the slot opening of the wire end housing is divided into multiple tongue structures by multiple pin slots. Multiple reinforcing ribs are evenly spaced at the top and bottom of the tongue structure of the wire end housing. In this invention, the reinforcing ribs can reduce the gap between the inside of the wire end housing and the PCB board, so that the wire end housing can better fit with the PCB board.

[0010] Furthermore, the piercing terminal has a U-shaped structure, and both ends of the opening side of the piercing terminal are pointed structures. In this invention, the structure of the piercing terminal can better pierce the wire harness without damaging the terminal core wire of the wire harness.

[0011] Furthermore, one end of the U-shaped spring opening of the piercing terminal is a blade-type spring structure. In this invention, the blade-type U-shaped spring can better clamp the PCB board on both sides.

[0012] Furthermore, the top of the connection between the U-shaped spring and the U-shaped frame of the piercing terminal is provided with an arc-shaped protrusion. The top and bottom areas of the wire end shell are provided with a plurality of first snap-fit ​​square holes and a plurality of second snap-fit ​​square holes at equal intervals. The plurality of first snap-fit ​​square holes and the plurality of second snap-fit ​​square holes are respectively located on two straight lines parallel to the length direction of the wire end shell, and the second snap-fit ​​square hole is located at the rear end of the first snap-fit ​​square hole. In this invention, the cooperation between the arc-shaped protrusion and the first snap-fit ​​square hole and the second snap-fit ​​square hole can play a limiting role.

[0013] Furthermore, the first and second snap-fit ​​square holes are located at the same vertical cross-section position of the pin slot of the wire end shell. In this invention, the first and second snap-fit ​​square holes can be better aligned with the arc protrusion of the piercing terminal to complete the positioning.

[0014] Furthermore, the spacing between every two adjacent wire harness perforations on the wire end housing is 1.5mm. In this invention, the spacing between the wire harness perforations is effectively shortened, thereby saving space while allowing more wire harnesses to be processed simultaneously.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention utilizes a special piercing terminal structure with a square groove layout in the wire end housing to reduce the spacing between two adjacent wire harness perforations, facilitating simultaneous riveting of multiple wire harnesses. At the same time, the wire end housing does not occupy excessive space, saving space. The staggered piercing terminal structure saves space on the one hand and prevents wire harnesses from squeezing each other on the other, better meeting usage requirements.

[0017] The limiting method of the first and second buckle square holes makes it easier and faster for wire harness manufacturers to rivet wire harnesses.

[0018] Meanwhile, the adjacent pin slotted structure can effectively decompose the overall clamping stress, which can be divided into several parts, making it more resistant to strong vibration and suitable for use in vibration conditions.

[0019] The piercing terminal pierces the wire sheath at the terminal head, and the U-shaped groove in the middle clamps the terminal core wire, thereby achieving the connection between the terminal and the wire; the 90° twisted structure at the terminal rivet makes the piercing terminal not only functional but also more space-saving.

[0020] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is an exploded view of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the wire end shell structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the PCB board structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the piercing terminal structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall inverted rear view structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the overall side view cross-sectional structure of the present invention;

[0028] Figure 8 This is a top-view planar structural diagram of the present invention.

[0029] In the diagram: 10. Wire end housing; 11. Wire harness through hole; 12. Slot opening; 13. Pin slot; 14. First snap-fit ​​square hole; 15. Second snap-fit ​​square hole; 16. Square slot; 17. Empty slot; 18. Plastic clamp boss; 19. Reinforcing rib; 20. PCB board; 21. Assembly slot; 22. Notch-type foolproof slot; 23. Round hole-type foolproof slot; 30. Piercing terminal; 31. U-shaped bracket; 32. U-shaped spring; 33. Piercing terminal; 34. Arc-shaped protrusion. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] For an example, please refer to the appendix. Figure 1-8A piercing connector with a smaller spacing on the card substrate includes: a wire end housing 10, a PCB board 20, and piercing terminals 30; the front side of the wire end housing 10 is provided with a slot opening 12, and multiple pin slots 13 are equally spaced at the slot opening 12. The multiple pin slots 13 have a sawtooth structure. Multiple wire harness through holes 11 are equally spaced at the top and rear end of the wire end housing 10. Multiple square slots 16 are provided at the rear end of the wire end housing 10. The multiple square slots 16 are divided into two rows, and the multiple square slots 16 in the same row are equally spaced. The two adjacent square slots 16 in different rows are staggered. Each square slot 16 is located at the same vertical cross-section position as a wire harness through hole 11. The square slots 16 and the slot opening are... 12 phases are connected; one side of the PCB board 20 is provided with an assembly slot 21 that matches the two sides of the front of the wire end housing 10; the piercing terminal 30 is composed of a U-shaped spring 32 on the front side and a U-shaped frame 31 on the rear side. A piercing terminal 33 is provided on the inner wall of one end of the U-shaped frame 31. The piercing terminal 33 is perpendicular to the U-shaped frame 31. The U-shaped spring 32, the U-shaped frame 31 and the piercing terminal 33 are integrally formed. Multiple piercing terminals 30 are installed at multiple pin slots 13. The piercing terminals 33 on one side of two adjacent piercing terminals 30 are located on the right side of the bottom inside the U-shaped frame 31 and the left side of the top inside the U-shaped frame 31, respectively. Multiple piercing terminals 33 are aligned with multiple square slots 16.

[0034] For details, please refer to the appendix. Figure 2-4 and attached Figure 8 Plastic clamping bosses 18 are provided at the top and bottom of the wire end housing 10 in both sides of the slot opening 12. Notch-type anti-foolproof slots 22 and round hole-type anti-foolproof slots 23 that are adapted to the plastic clamping bosses 18 are respectively provided at the mounting slots 21 on both sides of the PCB board 20.

[0035] It should be noted that, in this embodiment, the plastic clamping boss 18 can reduce the gap between the plastic and the PCB board 20, and the plastic clamping boss 18 cooperates with the anti-misfit slot of the PCB board 20 to play an interlocking and misfitting role. When the end of the plastic clamping boss 18 is stuck inside the notch-type anti-misfit slot 22 and the round hole-type anti-misfit slot 23, the connection between the wire end housing 10 and the PCB board 20 is more stable.

[0036] Furthermore, each of the four plastic clamp protrusions 18 areas has a slot 17 on the wire end housing 10, and one end of each of the four plastic clamp protrusions 18 is integrally formed with the rear inner wall of the slot 17.

[0037] It should be noted that, in this embodiment, the empty slot 17 facilitates the external movement of the plastic clamp boss 18, so that the end of the plastic clamp boss 18 can be ejected from the notch-type anti-foolproof slot 22 and the round hole-type anti-foolproof slot 23, thereby completing the disassembly of the PCB board 20.

[0038] Furthermore, the slot opening 12 of the wire end housing 10 is divided into multiple tongue structures by multiple pin slots 13, and multiple reinforcing ribs 19 are provided at equal distances at the top and bottom of the tongue structure of the wire end housing 10.

[0039] It should be noted that in this embodiment, the reinforcing rib 19 is made of plastic and has a certain degree of elasticity. The reinforcing rib 19 can reduce the gap between the inside of the wire end housing 10 and the PCB board 20, so that the wire end housing 10 can better fit with the PCB board 20.

[0040] For details, please refer to the appendix. Figure 5 The piercing terminal 33 has a U-shaped structure, and both ends of the opening side of the piercing terminal 33 are pointed structures.

[0041] It should be noted that, in this embodiment, by using the structure of the piercing terminal 33, the wire harness can be pierced more effectively without damaging the terminal core wire of the wire harness. The head of the piercing terminal 33 pierces the wire sheath, and the U-shaped groove in the middle of the piercing terminal 33 clamps the terminal core wire, thereby achieving the connection between the terminal and the wire. The 90° twist angle structure at the rivet of the piercing terminal 33 allows the piercing terminal 33 to achieve its function while saving more space.

[0042] Furthermore, one end of the opening of the U-shaped spring 32 of the piercing terminal 30 is a blade-type spring structure;

[0043] It should be noted that, in this embodiment, the blade-type U-shaped spring 32 can better clamp the PCB board 20 on both sides, and a soft rubber pad can be provided inside the U-shaped spring 32 to better contact the PCB board 20.

[0044] For details, please refer to the appendix. Figure 2 and attached Figure 7 The top of the connection between the U-shaped spring 32 and the U-shaped frame 31 of the piercing terminal 30 is provided with an arc protrusion 34. The top and bottom areas of the wire end shell 10 are provided with a plurality of first snap-fit ​​square holes 14 and a plurality of second snap-fit ​​square holes 15 at equal intervals. The plurality of first snap-fit ​​square holes 14 and the plurality of second snap-fit ​​square holes 15 are respectively located on two straight lines parallel to the length direction of the wire end shell 10, and the second snap-fit ​​square holes 15 are located at the rear end of the first snap-fit ​​square holes 14.

[0045] It should be noted that in this embodiment, the engagement of the arc protrusion 34 with the first snap-fit ​​square hole 14 and the second snap-fit ​​square hole 15 can play a limiting role. When the arc protrusion 34 is located inside the first snap-fit ​​square hole 14, the U-shaped groove of the piercing terminal 33 of the piercing terminal 30 will contact the wire harness, and then push the PCB board 20 to make the piercing terminal 33 of the piercing terminal 30 pierce the wire harness, thus completing the stable piercing operation.

[0046] Furthermore, the first snap-fit ​​square hole 14 and the second snap-fit ​​square hole 15 are respectively located at the same vertical section position of the Pin slot 13 of the wire end housing 10.

[0047] It should be noted that, in this embodiment, the first snap-fit ​​square hole 14 and the second snap-fit ​​square hole 15 can be better aligned with the arc protrusion 34 of the piercing terminal 30 to complete the limiting.

[0048] For details, please refer to the appendix. Figure 1 and attached Figure 2 The spacing between any two adjacent wire harness perforations 11 on the wire end housing 10 is 1.5 mm;

[0049] In this invention, the spacing of the wire harness perforations 11 is effectively shortened, thereby saving space while allowing more wire harnesses to be processed simultaneously.

[0050] The specific operation method of this invention is as follows:

[0051] First, insert the wire harness into the wire harness through hole 11 of the wire end housing 10. Then, mechanically push the PCB board 20 so that the arc protrusion 34 of the piercing terminal 30 is engaged in the first snap-fit ​​square hole 14. At this time, the middle U-shaped groove of the piercing terminal 33 will contact the wire harness terminal core wire. Then push the PCB board 20 again so that the arc protrusion 34 is engaged in the second snap-fit ​​square hole 15. At this time, the head of the piercing terminal 33 pierces the wire insulation, and the middle U-shaped groove of the piercing terminal 33 clamps the terminal core wire, thereby realizing the connection between the terminal and the wire. At this time, the riveting is in place.

[0052] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A card base plate piercing connector with smaller spacing, characterized in that, include: The wire end housing (10), the PCB board (20), and the piercing terminal (30); The front side of the wire end housing (10) is provided with a slot opening (12), and a plurality of pin slots (13) are provided at equal intervals at the slot opening (12). The plurality of pin slots (13) have a sawtooth structure. A plurality of wire harness through holes (11) are provided at equal intervals at the top rear end of the wire end housing (10). A plurality of square slots (16) are provided at the rear end of the wire end housing (10). The plurality of square slots (16) are divided into two rows, and the plurality of square slots (16) in the same row are distributed at equal intervals. The two adjacent square slots (16) in different rows are staggered. Each square slot (16) is located at the same vertical section position as a wire harness through hole (11). The square slot (16) is connected to the slot opening (12). The PCB board (20) has an assembly slot (21) on one side that is compatible with the front two sides of the wire end housing (10); The piercing terminal (30) is composed of a U-shaped spring (32) on the front side and a U-shaped frame (31) on the rear side. A piercing terminal (33) is provided on the inner wall of one end of the U-shaped frame (31). The piercing terminal (33) is perpendicular to the U-shaped frame (31). The U-shaped spring (32), the U-shaped frame (31), and the piercing terminal (33) are integrally formed. Multiple piercing terminals (30) are installed at multiple pin slots (13). The piercing terminals (33) on one side of two adjacent piercing terminals (30) are located on the right side of the bottom inside the U-shaped frame (31) and the left side of the top inside the U-shaped frame (31), respectively. Multiple piercing terminals (33) are aligned with multiple square slots (16).

2. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, Plastic clamping bosses (18) are provided at the top and bottom of the wire end housing (10) on both sides of the slot opening (12). Notch-type anti-foolproof slots (22) and round hole-type anti-foolproof slots (23) that are compatible with the plastic clamping bosses (18) are respectively provided at the mounting slots (21) on both sides of the PCB board (20).

3. A card base plate piercing connector with smaller spacing according to claim 2, characterized in that, Each of the four plastic clamp protrusions (18) areas has a slot (17) on the wire end shell (10), and one end of each of the four plastic clamp protrusions (18) is integrally formed with the rear inner wall of the slot (17).

4. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, The slot opening (12) of the wire end shell (10) is divided into multiple tongue structures by multiple pin slots (13), and multiple reinforcing ribs (19) are provided at equal distances at the top and bottom of the tongue structure of the wire end shell (10).

5. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, The piercing terminal (33) has a U-shaped structure, and the two ends of the opening side of the piercing terminal (33) are both pointed structures.

6. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, The U-shaped spring (32) of the piercing terminal (30) has a blade-type spring structure at one end.

7. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, The top of the connection between the U-shaped spring (32) and the U-shaped frame (31) of the piercing terminal (30) is provided with an arc protrusion (34). The top and bottom areas of the wire end shell (10) are provided with a plurality of first snap-fit ​​square holes (14) and a plurality of second snap-fit ​​square holes (15) at equal intervals. The plurality of first snap-fit ​​square holes (14) and the plurality of second snap-fit ​​square holes (15) are respectively located on two straight lines parallel to the length direction of the wire end shell (10), and the second snap-fit ​​square hole (15) is located at the rear end of the first snap-fit ​​square hole (14).

8. A card base plate piercing connector with smaller spacing according to claim 7, characterized in that, The first snap-fit ​​square hole (14) and the second snap-fit ​​square hole (15) are located at the same vertical section position of the Pin slot (13) of the wire end shell (10).

9. A card base plate piercing connector with smaller spacing according to claim 1, characterized in that, The spacing between any two adjacent wire harness perforations (11) on the wire end housing (10) is 1.5 mm.

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