PCB crimping fisheye

Abstract

The utility model discloses a PCB crimping fisheye, which belongs to the technical field of fisheye, and comprises a fisheye part and a connecting part, the fisheye part is arranged at one end of the connecting part, a leading-in part is arranged at the end of the fisheye part, a fisheye inner hole is arranged in the middle of the fisheye part, and the outside of the fisheye inner hole and the inner hole are both of a gradual change structure. The thickness of the outer frame is gradually increased from the leading-in part to the inside, the maximum width of the outside of the fisheye part is 1.2 + / -0.03 mm, and chamfering treatment is carried out on the cut surface of the outside of the fisheye inner hole. According to the utility model, a structural form beneficial to a crimping process is manufactured to replace a traditional fisheye connected by welding, so that the PCB can be smoothly crimped, the stability is ensured, the impact resistance and the vibration resistance are improved, the sensitivity to temperature is reduced, the durability is better, the heat loss to the PCB is smaller, and the failure mode caused by welding is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fish eye technical field, concretely relates to a PCB board crimping fish eye. BACKGROUND

[0002] Traditional fish eye and PCB board adopt welding process connection. Fish eye structure design is convenient for welding service, but fish eye of welding connection appears performance increasingly declining situation with time elapsing, and the ability of resisting impact, vibration is weak, and the sensitivity to temperature is higher, and need to heat PCB, easy to cause damage, and welding easily brings some failure modes, such as bridging, little tin, and even some tin filling is bad, tin bead etc., because need a kind of fish eye that can adopt crimping process, its structure design is convenient and is crimped between PCB board, make the smoothness of pressing, can guarantee reliable connection again. SUMMARY

[0003] The utility model discloses a kind of PCB board crimping fish eye to solve above-mentioned problem, it can be smoothly crimped with PCB board, ensure stability, improve the ability of resisting impact, vibration, reduce the sensitivity to temperature, can have better durability.

[0004] Technical scheme: the utility model provides a kind of PCB board crimping fish eye, comprising: fish eye part, connecting portion, the fish eye part is arranged at connecting portion one end, the fish eye part tip is provided with introduction part, fish eye hole is equipped in the fish eye part middle, the fish eye hole outside and inner hole are all gradually variable structure, outer frame thickness gradually increases from introduction part to inside, the maximum width of fish eye part outside is 1.2±0.03mm, the fish eye hole outside cut surface has chamfer processing. By interference fit, ensure the stability after crimping, gradually variable inner hole structure, guarantee the smoothness and elasticity of fish eye pressing into PCB board, maximum acting force is generated when the maximum value of body is pressed in.

[0005] Further, the above-mentioned one kind of PCB board crimping fish eye, the connecting portion is L-shaped structure.

[0006] Further, the above-mentioned one kind of PCB board crimping fish eye, fish eye part and PCB board adopt electronic crimping process connection. It has better ability of resisting impact and vibration, provides a wider temperature range of working environment, and does not need to heat PCB, so the thermal damage to PCB is smaller, and there is no some failure modes of welding.

[0007] Further, the above-mentioned one kind of PCB board crimping fish eye, the contact surface of introduction part adopts circular arc transition structure. Reduce the damage to PCB board hole when pressing, ensure the smoothness of pressing.

[0008] Further, the PCB press joint fish eye has the fish eye part and the connecting part which are integrally made of CuSn6-R560 copper alloy material.

[0009] Further, the PCB press joint fish eye has the fish eye part and the connecting part which are integrally made of CuSn6-R560 copper alloy material.

[0010] Further, the PCB press joint fish eye has the fish eye part and the connecting part which are integrally made of CuSn6-R560 copper alloy material.

[0011] The technical scheme can achieve the beneficial effects that the PCB press joint fish eye has the structure beneficial to the press joint process, uses the interference fit to ensure the stability after the press joint, the fish eye inner hole is a gradually changed inner hole structure to ensure the smoothness and elasticity of the fish eye pressed into the PCB, the maximum acting force is generated when the body maximum value is pressed in, the damage to the PCB hole when pressed in is reduced, the smoothness of the press is ensured, the press joint fish eye has better impact and vibration resistance than the welded fish eye, provides a wider temperature range of working environment, and the PCB does not need to be heated, so the thermal damage to the PCB is smaller, and there is no failure mode of welding. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a PCB press joint fish eye structure schematic view of the utility model;

[0013] Figure 2 It is a PCB press joint fish eye side view of the utility model;

[0014] Figure 3 It is a fish eye part schematic view of the utility model.

[0015] In the figure, the fish eye part 1, the connecting part 2, the lead-in part 11 and the fish eye inner hole 12. DETAILED DESCRIPTION

[0016] Embodiment 1

[0017] As Figures 1-3The PCB fish-eye compression joint shown in the embodiment comprises a fish-eye part 1 and a connecting part 2, the fish-eye part 1 is arranged at one end of the connecting part 2, a lead-in part 11 is arranged at the end of the fish-eye part 1, a fish-eye inner hole 12 is arranged in the middle of the fish-eye part 1, the outer part and the inner hole of the fish-eye inner hole 12 are both gradually changing structures, the outer frame thickness gradually increases from the lead-in part 11 to the inside, the maximum width of the outer part of the fish-eye part 1 is 1.2±0.03mm, and the outer cut surface of the fish-eye inner hole 12 is chamfered.

[0018] As shown in the embodiment, Figure 3 The PCB fish-eye compression joint shown in the embodiment, the outer frame thickness of the fish-eye inner hole 12 is 0.331mm from the head part, the thickness of the middle part is changed to 0.363mm, and the thickness of the end part is 0.381mm.

[0019] In the embodiment, the contact surface of the lead-in part 11 adopts a circular arc transition structure. The damage to the PCB hole when being pressed in is reduced, and the smoothness of the pressing in is ensured.

[0020] Embodiment 2

[0021] On the basis of the embodiment 1, in the embodiment, as shown in the embodiment, Figure 1 The PCB fish-eye compression joint shown in the embodiment, the connecting part 2 is an L-shaped structure, and the fish-eye part 1 and the PCB are connected by using an electronic compression joint process. It has better impact and vibration resistance, provides a wider temperature range of working environment, does not need to heat the PCB, so the thermal damage to the PCB is smaller, and there is no failure mode of welding.

[0022] As shown in the embodiment, Figure 3 The end position of the fish-eye part 1 is a straight face transition structure.

[0023] In the embodiment, the fish-eye part 1 and the connecting part 2 are integrally made of CuSn6-R560 copper alloy material.

[0024] In the embodiment, the fish-eye part 1 and the connecting part 2 are integrally made of CuSn6-R560 copper alloy material.

[0025] It should be noted that the above is only the technical solution of the utility model and not a limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the utility model technical solution can be modified or replaced equivalently without departing from the scope of the utility model technical solution, which should be covered in the scope of the claims of the utility model.

Claims

1. A PCB board crimping fisheye, characterized in that: include: Fish eye portion (1) and connecting portion (2). The fish eye portion (1) is located at one end of the connecting portion (2). An inlet portion (11) is provided at the end of the fish eye portion (1). The fish eye portion (1) has a fish eye inner hole (12) in the middle. The outer and inner holes of the fish eye inner hole (12) are both gradient structures. The thickness of the outer frame gradually increases from the inlet portion (11) inward. The maximum width of the outer part of the fish eye portion (1) is 1.2±0.03mm. The outer cut surface of the fish eye inner hole (12) has a chamfer treatment.

2. The PCB board crimping fisheye according to claim 1, characterized in that: The connecting part (2) has an L-shaped structure.

3. The PCB board crimping fisheye according to claim 1, characterized in that: The fisheye portion (1) is connected to the PCB board using an electronic pressing process.

4. The PCB board crimping fisheye according to claim 1, characterized in that: The contact surface of the inlet part (11) adopts a rounded transition structure.

5. A PCB board crimping fisheye according to claim 1, characterized in that: The fisheye part (1) and the connecting part (2) are made of CuSn6-R560 copper alloy material in one piece.

6. The PCB board crimping fisheye according to claim 1, characterized in that: The fisheye portion (1) and the connecting portion (2) are fully electroplated with nickel substrate with a thickness of 1.3-2.0 μm.

7. A PCB board crimping fisheye according to claim 1, characterized in that: The fisheye portion (1) and the connecting portion (2) are electroplated with a bright tin layer on the outside of the nickel base layer, with a thickness of 0.8-1.5μm.

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