Large-current cardboard terminal

Abstract

The utility model discloses a large-current card board terminal, which is used for pressing and fixing a large-current wire on a PCB (Printed Circuit Board), and comprises a wire pressing terminal, the wire pressing terminal comprises a wiring end and a plugging end, the wiring end is provided with a wiring hole, the wire is plugged in the wiring hole, and a first boss is arranged between the plugging end and the wiring end; the clamping jaw is connected to the inserting end in a sleeving mode, an elastic jaw protruding outwards is arranged on the clamping jaw, and the elastic jaw is arranged in an inclined upward mode; the circuit board body is provided with a connecting hole, the plugging end passes through the connecting hole, and the circuit board body is clamped between the first boss and the elastic claw. According to the utility model, the first boss and the claw arranged on the plugging end are utilized, and the plugging end passes through the connecting hole on the circuit board body, so that the terminal can be clamped on the circuit board body, the structure is simple, and the wire is easy to connect and firm to fix.

Description

Technical Field

[0001] The utility model relates to the technical field of wiring terminals, in particular to a large current card terminal. Background Art

[0002] On the PCB board, in order to ensure stable and reliable power supply and data transmission between various components, the connection between the wire and the PCB board is crucial. There are two main ways to connect the wires: welding and crimping. For large-flow wires, due to their thicker wire diameter, welding not only requires high technical requirements, but also relatively complicated operations. Therefore, in the connection of large-flow wires, crimping terminals are generally used for connection.

[0003] The crimping method uses mechanical force to bring the connector components into close contact, achieving a stable connection between the wire and the PCB board. This connection method does not require additional welding equipment, which simplifies the installation process and makes it more convenient and quick. It is especially suitable for batch installation scenarios and can greatly improve production efficiency. In addition to being easy to install, the crimping connection method is also easy to disassemble. When the circuit needs to be debugged or repaired, the connection terminals can be easily removed, which provides great convenience for subsequent operations. This flexibility has made the crimping connection method widely used in the field of electronic equipment manufacturing and maintenance.

[0004] However, some crimping terminals on the market currently have problems such as complex structure and high cost. In order to reduce costs and improve production efficiency, it is necessary to optimize the structure and simplify the design of existing crimping terminals. By improving the design, production costs can be reduced while maintaining or improving connection performance and reliability, thereby meeting market demand. Utility Model Content

[0005] In order to overcome the disadvantage of the complicated structure of the crimping terminal in the prior art, the utility model provides a large current card terminal.

[0006] The technical solution of the utility model is as follows:

[0007] A high-current card terminal, used for crimping and fixing high-current wires on a PCB, comprising:

[0008] A crimping terminal, the crimping terminal comprising a wiring terminal and a plug-in terminal, the wiring terminal being provided with a wiring hole into which the wire is plugged, and a first boss being provided between the plug-in terminal and the wiring terminal;

[0009] A claw, the claw is sleeved on the plug-in end, the claw is provided with an elastic claw protruding outward, and the elastic claw is arranged obliquely upward;

[0010] A connecting hole is provided on the circuit board body, the plug-in end passes through the connecting hole, and the circuit board body is clamped between the first boss and the elastic claw.

[0011] Furthermore, in one embodiment, a second boss is provided at the top of the plug-in end, and a slot is formed between the first boss and the second boss;

[0012] The clamping claw further comprises a hollow columnar fixing sleeve, the fixing end of the elastic claw is connected to the fixing sleeve, the fixing sleeve has an opening, and the fixing sleeve is sleeved in the clamping slot.

[0013] Furthermore, in one embodiment, the width of the card slot is greater than or equal to the height of the fixing sleeve.

[0014] Furthermore, in one embodiment, the crimping terminal is made of copper, and the outer surface of the crimping terminal is tin-plated.

[0015] Furthermore, in one embodiment, the material of the claw is phosphor bronze.

[0016] Furthermore, in one embodiment, a window is provided in the middle of the fixing sleeve, the elastic claw is located at the window position, and the fixing sleeve and the elastic claw are an integral structure.

[0017] Furthermore, in one embodiment, a plating hole is provided on the first boss, and the plating hole is connected to the wiring hole.

[0018] Furthermore, in one embodiment, a bottom edge of the second boss is chamfered.

[0019] Furthermore, in one embodiment, a chamfer is provided at the top of the wiring hole.

[0020] Furthermore, in one embodiment, the thickness of the circuit board body is 2.0 mm, and the diameter of the connecting hole is 4.5 mm.

[0021] The utility model according to the above scheme has the beneficial effect that the terminal can be engaged with the circuit board body by utilizing the first boss and the claws arranged on the plug-in end, and the plug-in end passes through the connecting hole on the circuit board body to realize the rapid connection of the high-current wire and the circuit board body, fix the wire, and the terminal structure is simple, and the connection of the wire is easy and fixed firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 for Figure 1 Exploded diagram of

[0025] Figure 3 It is a schematic diagram of the application of the utility model;

[0026] Figure 4 This is a cross-sectional view of the crimping terminal.

[0027] In the figure, 100, crimping terminal; 110, wiring terminal; 1101, wiring hole; 120, plug-in terminal; 1201, second boss; 130, first boss; 1301, electroplating hole; 140, slot; 200, claw; 210, elastic claw; 220, fixing sleeve; 300, circuit board body. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "inside", "outside" and similar expressions used in this specification are for illustrative purposes only. In the description of the utility model, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0029] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1-Figure 3 As shown, the utility model provides an embodiment of a high-current card terminal, which is used for crimping and fixing high-current wires on a PCB board, and includes a crimping terminal 100 and a clamping claw 200. The crimping terminal 100 includes a wiring terminal 110 and a plug-in terminal 120, the wiring terminal 110 is provided with a wiring hole 1101, the wire is plugged into the wiring hole 1101, and a first boss 130 is provided between the plug-in terminal 120 and the wiring terminal 110; the clamping claw 200 is sleeved on the plug-in terminal 120, and an elastic claw 210 protruding outward is provided on the clamping claw 200, and the elastic claw 210 is arranged obliquely upward; a connecting hole is provided on the circuit board body 300, and the plug-in terminal 120 passes through the connecting hole, and the circuit board body 300 is clamped between the first boss 130 and the elastic claw 210. The crimping terminal 100 is a cylindrical assembly, the diameter of the first boss 130 is larger than the diameter of the connection hole, the diameter of the plug end 120 is smaller than the diameter of the connection hole, and the elastic claw 210 on the claw 200 has a maximum diameter width of the movable end in a normal state that is larger than the diameter of the connection hole, and is generally equal to the diameter width of the first boss 130. When plugging through the connection hole, since the elastic claw 210 is tilted upward, under the pressure of the circuit board body 300, the elastic claw 210 is gathered toward the center and close to the plug end 120, so that the claw 200 passes through the connection hole. When the claw 200 passes through the connection hole, there is no external force, and the elastic claw 210 rebounds to the normal state, and the circuit board body 300 is clamped between the elastic claw 210 and the first boss 130, that is, the high-current clamping terminal is fixed to the circuit board body 300. By utilizing the first boss 130 and the claw 200 arranged on the plug-in end 120, the terminal can be engaged with the circuit board body 300. The plug-in end 120 passes through the connecting hole on the circuit board body 300 to achieve a quick connection between the high-current wire and the circuit board body 300, fix the wire, and has a simple structure. The wire connection is easy and the fixation is stable.

[0032] In one embodiment, a second boss 1201 is provided at the top of the plug-in end 120, and a slot 140 is formed between the first boss 130 and the second boss 1201; the claw 200 also includes a hollow columnar fixing sleeve 220, the fixing end of the elastic claw 210 is connected to the fixing sleeve 220, the fixing sleeve 220 has an opening, and the fixing sleeve 220 is sleeved in the slot 140. The lower bottom surface of the first boss 130 and the upper top surface of the second boss 1201 respectively hinder the upward and downward movement of the fixing sleeve 220, so that the claw 200 is fixed in the slot 140. The crimping terminal 100 and the claw 200 are independently arranged, and the two can be independently processed and formed and then assembled, so that the processing and production of the finished product are simple and the production efficiency is improved.

[0033] In one embodiment, the width of the slot 140 is greater than or equal to the height of the fixing sleeve 220 .

[0034] In one embodiment, the material of the crimping terminal 100 is copper, and the outer surface of the crimping terminal 100 is tin-plated. The crimping terminal 100 is generally made of electrolytic copper T2, which is a domestic brand. T2 requires a copper content of 99.90% and a total impurity content of less than 0.1%. Tin has high activity and reacts with oxygen in the air to form a layer of tin oxide film, isolating the inner metal atoms from the outside air, and protecting the inner metal structure from oxidation. The outer surface of the crimping terminal 100 is tin-plated so that the tin layer forms a protective layer on the outer surface of the crimping terminal 100, thereby extending the service life of the crimping terminal 100.

[0035] like Figure 4 As shown, in one embodiment, a plating hole 1301 is provided on the first boss 130, and the plating hole 1301 is connected to the wiring hole 1101. The arrangement of the plating hole 1301 ensures that there is no residue inside the wiring hole 1101 during electroplating, so that the electroplated tin layer is plated smoothly.

[0036] In one embodiment, the material of the claw 200 is phosphor copper. Phosphor copper is an alloy material, which includes phosphorus and copper. The phosphorus content is usually between 0.03% and 0.35%. There are also phosphor copper alloys with phosphorus content between 0.5% and 1.5%. Phosphor copper has good electrical conductivity and is not easy to heat up, which can ensure the safety of the claw 200 when in use; in particular, tin phosphor bronze has higher corrosion resistance and wear resistance. During the use of the claw 200, the phosphor copper claw 200 can resist corrosion and wear, thereby maintaining a longer service life; it has the characteristics of automatic self-alignment and is insensitive to deflection, so that the bearing is evenly stressed and has a high load-bearing capacity; it is not easy to generate sparks during impact, and can effectively prevent the danger of fire caused by impact sparks when welding wires on PCB boards; it also has the characteristics of self-lubrication and does not require maintenance, which helps to reduce the friction and wear of the claw 200 during operation.

[0037] Phosphor copper, as the material for preparing the claw 200 , has the advantages of corrosion resistance, wear resistance, impact resistance, high load-bearing capacity, self-lubrication, good conductivity and safety, and excellent machining performance, and is an ideal material for preparing the claw 200 .

[0038] like Figure 2 As shown, in one embodiment, a window is opened in the middle of the fixing sleeve 220, and the elastic claw 210 is located at the window position, and the fixing sleeve 220 and the elastic claw 210 are an integrated structure. In this embodiment, the elastic claw 210 and the fixing sleeve 220 can be made of a piece of material, and the elastic claw 210 is formed by bending the metal sheet at the window position outward. This design simplifies the structure of the claw 200, and the preparation and molding of the claw 200 can be achieved only by cutting and bending. The preparation method of the claw 200 is simple and convenient. On the card slot 140, the body of the fixing sleeve 220 and the elastic claw 210 appear alternately, so that the claw 200 is stably connected to the plug-in end 120; and the elastic claw 210 is distributed in a central symmetrical manner, so that each elastic claw 210 is evenly stressed during connection, preventing unilateral damage caused by uneven stress, causing the claw 200 to be loosely engaged, resulting in an unstable connection between the terminal and the circuit board, and an unstable circuit connection.

[0039] In one embodiment, the bottom edge of the second boss 1201 is chamfered. The chamfer design on the second boss 1201 reduces the radius of the bottom of the second boss 1201, increases the diameter difference between the plug end 120 and the connection hole, guides the insertion of the plug end 120, and helps to balance the force on the claw 200 during plugging.

[0040] In one embodiment, a chamfer is provided at the top of the wiring hole 1101. The chamfer design can guide the wire into the wiring hole 1101, making it easier to crimp the wire.

[0041] In one embodiment, the thickness of the circuit board body 300 is 2.0 mm, and the diameter of the connection hole is 4.5 mm. Correspondingly, the length of the crimping terminal 100 is 13.7 mm, the diameter of the wiring hole 1101 is 3.5 mm, the width of the card slot 140 is 5.6 mm, and the maximum diameter of the second boss 1201 is 4.2 mm. The height of the fixing sleeve 220 is 5.5 mm and the diameter is 3.7 mm.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0043] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A high-current card terminal, used for crimping and fixing high-current wires on PCB boards, characterized in that: include, A crimping terminal, the crimping terminal comprising a wiring terminal and a plug-in terminal, the wiring terminal being provided with a wiring hole into which the wire is plugged, and a first boss being provided between the plug-in terminal and the wiring terminal; A claw, the claw is sleeved on the plug-in end, the claw is provided with an elastic claw protruding outward, and the elastic claw is arranged obliquely upward; A connecting hole is provided on the circuit board body, the plug-in end passes through the connecting hole, and the circuit board body is clamped between the first boss and the elastic claw.

2. The high current card terminal according to claim 1, characterized in that: A second boss is provided at the top of the plug-in end, and a slot is formed between the first boss and the second boss; The clamping claw further comprises a hollow columnar fixing sleeve, the fixing end of the elastic claw is connected to the fixing sleeve, the fixing sleeve has an opening, and the fixing sleeve is sleeved in the clamping slot.

3. The high current card terminal according to claim 2, characterized in that: The width of the card slot is greater than or equal to the height of the fixing sleeve.

4. The high current card terminal according to claim 2, characterized in that: The crimping terminal is made of copper, and the outer surface of the crimping terminal is tin-plated.

5. The high current card terminal according to claim 2, characterized in that: The material of the claw is phosphor bronze.

6. The high current card terminal according to claim 2, characterized in that: A window is formed in the middle of the fixing sleeve, the elastic claw is located at the window position, and the fixing sleeve and the elastic claw are an integrated structure.

7. The high current card terminal according to claim 4, characterized in that: The first boss is provided with a plating hole, which is connected with the wiring hole.

8. The high current card terminal according to claim 2, characterized in that: The bottom edge of the second boss is chamfered.

9. The high current card terminal according to claim 1, characterized in that: The top of the wiring hole is provided with a chamfer.

10. The high current card terminal according to claim 1, characterized in that: The thickness of the circuit board body is 2.0 mm, and the diameter of the connecting hole is 4.5 mm.

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