Power terminal and power connector

Abstract

The utility model discloses a power terminal and power connector, this power terminal includes main part and integrative forming in the first contact arm and second contact arm of main part both sides and the distribution of facing, the first contact arm and second contact arm between form have clamping guide space, the main part is flat, the first contact arm is from the side of main part and extends and is bent to form to the upside, the second contact arm is from the other side of main part and extends and is bent to form to the upside. The utility model sets up the main part of power terminal into flat, and the root of first contact arm and second contact arm respectively extends to the both sides of main part, makes the force arm support point distribution of first contact arm and second contact arm in the both sides of main part, can make the force arm of first contact arm and second contact arm be long enough to have better elastic deformation ability under the condition that the total height of power terminal is limited, satisfies the customer use requirement.

Description

Technical fields:

[0001] This utility model relates to the field of connector technology, and specifically to a power terminal and a power connector. Background technology:

[0002] A connector is a connecting bridge that enables electrical connections and signal transmission between devices, components, and systems. It is a fundamental component necessary for forming a complete system. Power connectors are a common type of electrical connector used to provide power to electronic devices and are widely used in electronic products such as home appliances, medical devices, and automobiles.

[0003] Chinese utility model application No. 202321658020.9 discloses a high-current power connector, which includes a male socket and a female socket. The male socket and the female socket are connected and electrically mated. The female socket is provided with multiple insertion slots for mating with the male socket. Each insertion slot is provided with a connection terminal. The connection terminal includes a terminal base and a fixing part symmetrically arranged on both sides of the terminal base. The upper end of the fixing part is bent downward to form a bend. The end of the bend is folded inward towards the fixing part to form a bend. The upper end of the fixing part is provided with a dividing groove that divides the bend and the bend into two parts. The fixing part is symmetrically arranged on both sides of the terminal base and is formed with a clamp. By dividing the bend and the bend into two parts, the electrical connection between the female socket and the male socket can be ensured. By dividing the insertion slots into multiple parts, arcing between the signal terminal and the power terminal can be avoided, thus improving stability.

[0004] The aforementioned high-current power connectors have some shortcomings:

[0005] 1. The lever arm of the connecting terminal is formed by bending down the corner and the bend from the top of the fixing part. Its lever arm is extremely short, resulting in insufficient elasticity. In addition, the fixing part occupies a large height, which is not suitable for use where the total height of the female seat is limited.

[0006] 2. In high-current power connectors, multiple connection terminals need to be fixed in the socket of the female connector through assembly to ensure the stability of the assembly structure. The solder feet of the connection terminals are required to extend beyond the female connector, which makes the structure of the female connector relatively complex. This, in turn, makes the mold for manufacturing the female connector more complex, which increases production costs. In addition, after multiple connection terminals are assembled into the socket of the female connector in sequence, the solder feet of the connection terminals need to be welded and fixed, making the assembly process relatively cumbersome and not conducive to improving assembly efficiency.

[0007] In view of the above, the inventors propose the following technical solution. Utility model content:

[0008] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a power terminal and a power connector.

[0009] To solve the first technical problem mentioned above, the present invention adopts the following technical solution: the power terminal includes a main body and a first contact arm and a second contact arm integrally formed on both sides of the main body and distributed facing each other. A clamping and guiding space is formed between the first contact arm and the second contact arm. The main body is flat. The first contact arm extends upward from one side of the main body and is bent to form the first contact arm. The second contact arm extends upward from the other side of the main body and is bent to form the second contact arm.

[0010] Furthermore, in the above technical solution, the lower end face of the main body serves as a welding surface and is used to weld and fix to the PCB board and conduct electricity; wherein, the lower end face of the first contact arm is connected to one side of the welding surface; and the lower end face of the second contact arm is connected to the other side of the welding surface.

[0011] Furthermore, in the above technical solution, the main body is also provided with a positioning hole, which penetrates the welding surface.

[0012] Furthermore, in the above technical solution, the total height of the power terminal is equal to the height from the lowest point to the highest point of the first contact arm or the second contact arm.

[0013] Furthermore, in the above technical solution, the first contact arm includes a first arc-shaped bending portion extending upward from one side of the main body and bent into shape, a first main arm body extending upward along the upper end of the first arc-shaped bending portion, and a first arc-shaped guide portion bending downward along the upper end of the first main arm body; the second contact arm includes a second arc-shaped bending portion extending upward from the other side of the main body and bent into shape, a second main arm body extending upward along the upper end of the second arc-shaped bending portion, and a second arc-shaped guide portion bending downward along the upper end of the second main arm body, wherein the clamping guide space is formed between the second arc-shaped guide portion and the first arc-shaped guide portion.

[0014] Furthermore, in the above technical solution, the lower end of the first arc-shaped guide portion is bent towards the direction of the first main arm body to form a first inward folded corner piece; the lower end of the second arc-shaped guide portion is bent towards the direction of the second main arm body to form a second inward folded corner piece.

[0015] Furthermore, in the above technical solution, the number of the first contact arms is at least two, which are integrally connected side by side with spacing between them to one side of the main body; the number of the second contact arms is at least two, which are integrally connected side by side with spacing between them to the other side of the main body; wherein, the first contact arms and the second contact arms are distributed in a mirror symmetrical manner, or the first contact arms and the second contact arms are distributed in a staggered manner facing each other.

[0016] To solve the second technical problem mentioned above, the present invention adopts the following technical solution: the power connector includes at least one power terminal and a guide protective cover. The power terminal is soldered and fixed on the PCB board, and the guide protective cover is fixedly installed on the PCB board and covers the power terminal. The guide protective cover does not contact the power terminal, and the guide protective cover is provided with a guide hole corresponding to the clamping and guiding space of the power terminal.

[0017] Furthermore, in the above technical solution, the guide protective cover includes a cover plate and several legs fixed to the lower end of the cover plate, and the legs are fixed to the PCB board.

[0018] Furthermore, in the above technical solution, the PCB board is provided with a number of limiting holes adapted to the legs; at least two legs have a pair of elastic buckles formed at their lower ends, the distance between the upper end face of the buckle and the lower end face of the leg is adapted to the thickness of the PCB board, when the elastic buckle passes through the limiting hole, the lower end face of the leg abuts against the upper surface of the PCB board, and the upper end face of the buckle abuts against the lower surface of the PCB board, so that the legs and the PCB board are locked in a certain position.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0020] 1. This utility model sets the main body of the power terminal in a flat plate shape, and extends the root of the first contact arm and the second contact arm to the two sides of the main body respectively, so that the fulcrum of the first contact arm and the second contact arm are distributed on the two sides of the main body. In this way, under the condition that the total height of the power terminal is limited, the lever arm of the first contact arm and the second contact arm can be made long enough to have better elastic deformation capability and meet the customer's usage requirements.

[0021] 2. In this utility model, the power connector directly solders the power terminals to the PCB board and uses a guide protective cover to cover the power terminals to protect them. This eliminates the need for an insulating base for assembling the power terminals, simplifying the connector structure and reducing mold costs associated with insulating bases. Although a guide protective cover protects the power terminals, it does not contact the terminals and there is no fixed assembly relationship between them, making the guide protective cover extremely simple to design and reducing mold costs. Furthermore, the power terminals and the guide protective cover are two independent components without a fixed assembly relationship. During assembly and use, the power terminals are directly soldered to the PCB board, and then the guide protective cover is fixed to the PCB board, ensuring that the guide holes of the guide protective cover correspond to the clamping and guiding spaces of the power terminals. This makes assembly and use extremely simple and efficient. Attached image description:

[0022] Figure 1This is a perspective view of the power supply terminal in this utility model;

[0023] Figure 2 This is a perspective view of the power supply terminal in this utility model from another angle;

[0024] Figure 3 This is a front view of the power supply terminal in this utility model;

[0025] Figure 4 This is a diagram showing the usage status of the power supply terminals in this utility model;

[0026] Figure 5 This is an assembly diagram of the power connector and PCB board in this utility model;

[0027] Figure 6 This is a diagram showing the usage status of the power connector in this utility model;

[0028] Figure 7 This is an exploded view of the power connector and PCB board in this utility model;

[0029] Figure 8 This is an assembly diagram of multiple power terminals and a PCB board in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1 Power terminal 10 Clamping and connecting space 11 Main body

[0032] 111 Welding surface 112 Positioning hole 12 First contact arm

[0033] 121 First arc-shaped bending section; 122 First main arm body; 123 First arc-shaped guide section

[0034] 124 First inward folded corner piece; 13 Second contact arm; 131 Second arc-shaped bend.

[0035] 132 Second main arm body; 133 Second arc-shaped guide part; 134 Second inner angle plate.

[0036] 2. Guide cover 20. Guide hole 21. Cover plate

[0037] 22 legs, 220 buckle body, 221 elastic buckle

[0038] 3 PCB board 31 limiting holes 4 conductive sheets Detailed implementation method:

[0039] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0040] See Figure 1-4As shown, a power terminal is made of metal. The power terminal 1 includes a main body 11 and a first contact arm 12 and a second contact arm 13 integrally formed on both sides of the main body 11 and distributed facing each other. A clamping and guiding space 10 is formed between the first contact arm 12 and the second contact arm 13. In use, it is combined with... Figure 4 As shown, after the conductive piece 4 of the mating connector is inserted into the clamping and conducting space 10, it is clamped and fixed by the first contact arm 12 and the second contact arm 13 to form a stable electrical conduction function.

[0041] In this embodiment, given the limited total height of the power terminals, the lever arms of the first contact arm 12 and the second contact arm 13 are made sufficiently long to achieve better elastic deformation capability. The present invention employs the following design: the main body 11 is made into a flat plate shape, and the positions of the first contact arm 12 and the second contact arm 13 relative to the main body 11 are modified. Specifically, the first contact arm 12 extends upward from one side of the main body 11 and is bent to form a lever arm, with the root of the first contact arm 12 connecting to one side of the main body 11 serving as the fulcrum of the lever arm; the second contact arm 13 extends upward from the other side of the main body 11 and is bent to form a lever arm, with the root of the second contact arm 13 connecting to the other side of the main body 11 serving as the fulcrum of the lever arm. In other words, the present invention sets the main body of the power terminal in a flat plate shape, and extends the root of the first contact arm 12 and the second contact arm 13 to the two sides of the main body 11 respectively, so that the lever arm fulcrum of the first contact arm 12 and the second contact arm 13 is distributed on the two sides of the main body 11. In this way, under the condition that the total height of the power terminal is limited, the lever arm of the first contact arm 12 and the second contact arm 13 can be made long enough to have better elastic deformation capability and meet the customer's usage requirements.

[0042] The power terminal 1 is an SMD component, which is fixed to the PCB board by bonding and soldering. In order to make the overall height (i.e., total height) of the power terminal 1 smaller, the lower end surface of the main body 11 is used as the soldering surface 111, which is used to solder and fix to the PCB board and conduct electricity.

[0043] The lower end face of the first contact arm 12 is aligned with one side of the welding surface 111; the lower end face of the second contact arm 13 is aligned with the other side of the welding surface, so that the total height of the power terminal 1 is equal to the height from the lowest point to the highest point of the first contact arm 12 or the second contact arm 13. Thus, when the total height of the power terminal is limited, the lever arm of the first contact arm 12 and the second contact arm 13 can be made as long as possible to have the best elastic deformation capability.

[0044] In this embodiment, the total height of the power terminal 1 is less than or equal to 10mm.

[0045] In this embodiment, the first contact arm 12 and the second contact arm 13 have the same structure, shape, and size.

[0046] In some embodiments, the main body 11 is further provided with a positioning hole 112, which passes through the welding surface 111. When the welding surface 111 of the main body 11 is soldered and fixed to the PCB board, the solder will partially integrate into the positioning hole 112, thereby achieving further positioning and improving the welding quality, making the welding structure more robust.

[0047] The specific structures of the first contact arm 12 and the second contact arm 13 are described below.

[0048] The first contact arm 12 includes a first arc-shaped bending portion 121 extending upward from one side of the main body portion 11 and bent to form a first main arm body 122 extending upward along the upper end of the first arc-shaped bending portion 121, and a first arc-shaped guide portion 123 bending downward along the upper end of the first main arm body 122; wherein, the first main arm body 122 is in an inclined state, and the lower end of the first arc-shaped guide portion 123 is bent toward the first main arm body 122 to form a first inward folding corner piece 124, which can avoid scratching the conductive piece 4 of the mating connector inserted into the clamping guide space 10.

[0049] The second contact arm 13 includes a second arc-shaped bend 131 extending upward from the other side of the main body 11 and bent, a second main arm 132 extending upward along the upper end of the second arc-shaped bend 131, and a second arc-shaped guide portion 133 bending downward along the upper end of the second main arm 132. The clamping guide space 10 is formed between the second arc-shaped guide portion 133 and the first arc-shaped guide portion 123. The lower end of the second arc-shaped guide portion 133 is bent towards the second main arm 132 to form a second inward folded corner piece 134, which can prevent scratching the conductive piece 4 of the mating connector inserted into the clamping guide space 10.

[0050] The number of the first contact arms 12 is at least two, which are integrally connected side by side with a gap to one side of the main body 11; the number of the second contact arms 13 is at least two, which are integrally connected side by side with a gap to the other side of the main body 11, thereby forming at least two spaced clamping and guiding spaces 10, so that when the conductive piece 4 of the mating connector is inserted, it is simultaneously inserted into all the clamping and guiding spaces 10, thereby increasing the guiding area and ensuring the stability of the electrical connection so as to realize high current transmission.

[0051] The first contact arm 12 and the second contact arm 13 are either mirror-symmetrically distributed or offset from each other. In this embodiment, the first contact arm 12 and the second contact arm 13 are mirror-symmetrically distributed.

[0052] In summary, this utility model sets the main body of the power terminal in a flat plate shape, and extends the root of the first contact arm 12 and the second contact arm 13 to the two sides of the main body 11 respectively, so that the fulcrum of the lever arm of the first contact arm 12 and the second contact arm 13 is distributed on the two sides of the main body 11. In this way, under the condition that the total height of the power terminal is limited, the lever arm of the first contact arm 12 and the second contact arm 13 can be made long enough to have better elastic deformation capability and meet the customer's usage requirements.

[0053] This utility model also proposes a power connector, combined with Figure 1-8 As shown, the power connector includes at least one power terminal 1 as described above and a guide protective cover 2. The power terminal 1 is soldered and fixed to the PCB board 3, and the guide protective cover 2 is fixedly installed on the PCB board 3 and covers the power terminal 1. The guide protective cover 2 does not contact the power terminal 1, and the guide protective cover 2 has a guide insertion hole 20 corresponding to the clamping guide space 10 of the power terminal 1. The guide insertion hole 20 and the clamping guide space 10 form a positive projection correspondence. That is to say, the power connector of this utility model directly solders and fixes the power terminal 1 to the PCB board 3, and uses the guide protective cover 2 to cover the power terminal 1 to protect the power terminal 1. That is, the power connector of this utility model does not need to set an insulating seat for assembling the power terminal 1, making the power connector structure simpler and reducing the mold opening cost of the insulating seat. Although the power connector uses the guide protective cover 2 to protect the power terminal 1, the guide protective cover 2 does not contact the power terminal 1, and there is no fixed assembly relationship between them, making the guide protective cover 2 extremely simple and the mold opening cost low. Furthermore, the power terminal 1 and the guide protective cover 2 in this utility model are two independent components without a fixed assembly relationship. During assembly and use, the power terminal 1 is directly welded and fixed to the PCB board 3, and then the guide protective cover 2 is fixed to the PCB board 3, so that the guide insertion hole 20 of the guide protective cover 2 corresponds to the clamping and guiding space 10 of the power terminal 1. Its assembly and use are extremely simple and efficient.

[0054] The guide cover 2 is made of plastic or other non-conductive materials.

[0055] The following describes the assembly structure of the guide cover 2 and the PCB board 3.

[0056] The guide cover 2 includes a cover plate 21 and several support legs 22 fixed to the lower end of the cover plate 21. Its structure is extremely simple. The support legs 22 are fixed to the PCB board 3, so that the cover plate 21 is supported above the PCB board 3 and located above the power terminal 1. Furthermore, a gap is formed between the outer side of the guide cover 2 and the PCB board 3, which facilitates heat dissipation, etc.

[0057] The PCB board 3 is provided with a plurality of limiting holes 31 that are adapted to the legs 22; at least two legs 22 have a pair of elastic buckles 221 formed at their lower ends. The distance between the upper end face of the buckle body 220 of the elastic buckle 221 and the lower end face of the leg 22 is adapted to the thickness of the PCB board 3. When the elastic buckle 221 passes through the limiting hole 31, the lower end face of the leg 22 abuts against the upper surface of the PCB board 3, and the upper end face of the buckle body 220 abuts against the lower surface of the PCB board 3, so that the legs 22 and the PCB board 3 are locked in a certain position. Its assembly structure is simple and stable, ensuring that the guide protective cover 2 is stably installed on the PCB board 3.

[0058] In summary, the power connector of this invention directly welds and fixes the power terminal 1 to the PCB board 3, and uses a guide protective cover 2 to cover the power terminal 1 to protect it. This means the power connector of this invention does not require an insulating base for assembling the power terminal 1, simplifying the connector structure and reducing the molding cost of the insulating base. Although the power connector uses the guide protective cover 2 to protect the power terminal 1, the guide protective cover 2 does not contact the power terminal 1, and there is no fixed assembly relationship between them, making the guide protective cover 2 extremely simple to make and with low molding cost. Furthermore, the power terminal 1 and the guide protective cover 2 in this invention are two independent components without a fixed assembly relationship. During assembly and use, the power terminal 1 is directly welded and fixed to the PCB board 3, and then the guide protective cover 2 is fixed to the PCB board 3, ensuring that the guide insertion hole 20 of the guide protective cover 2 corresponds to the clamping and guiding space 10 of the power terminal 1. Its assembly and use are extremely simple and efficient.

[0059] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A power terminal, comprising a main body and a first contact arm and a second contact arm integrally formed on both sides of the main body and distributed facing each other, wherein a clamping and conductive space is formed between the first contact arm and the second contact arm, characterized in that: The main body is flat, and the first contact arm extends upward from one side of the main body and is bent to form the first contact arm; the second contact arm extends upward from the other side of the main body and is bent to form the second contact arm.

2. The power terminal of claim 1, wherein: The lower end face of the main body serves as a welding surface and is used to weld and fix it to the PCB board and conduct electricity; wherein, the lower end face of the first contact arm is connected to one side of the welding surface; the lower end face of the second contact arm is connected to the other side of the welding surface.

3. The power terminal of claim 1, wherein: The main body is also provided with a positioning hole that passes through the welding surface.

4. The power terminal of claim 2, wherein: The total height of the power terminals is equal to the height from the lowest point to the highest point of the first or second contact arm.

5. The power terminal of claim 1, wherein: The first contact arm includes a first arc-shaped bending portion extending upward from one side of the main body and bent into shape, a first main arm body extending upward along the upper end of the first arc-shaped bending portion, and a first arc-shaped guide portion bending downward along the upper end of the first main arm body; the second contact arm includes a second arc-shaped bending portion extending upward from the other side of the main body and bent into shape, a second main arm body extending upward along the upper end of the second arc-shaped bending portion, and a second arc-shaped guide portion bending downward along the upper end of the second main arm body, wherein the clamping guide space is formed between the second arc-shaped guide portion and the first arc-shaped guide portion.

6. The power terminal of claim 5, wherein: The lower end of the first arc-shaped guide portion is bent towards the direction of the first main arm body to form a first inward folded corner piece; the lower end of the second arc-shaped guide portion is bent towards the direction of the second main arm body to form a second inward folded corner piece.

7. The power terminal of claim 1, wherein: The number of the first tentacles is at least two, which are integrally connected side by side with a gap between them to one side of the main body; the number of the second tentacles is at least two, which are integrally connected side by side with a gap between them to the other side of the main body; wherein the first tentacles and the second tentacles are distributed in a mirror symmetrical manner, or the first tentacles and the second tentacles are distributed in a staggered manner facing each other.

8. A power connector, characterized by: It includes at least one power terminal as described in any one of claims 1-7 and a guide protective cover, wherein the power terminal is soldered and fixed to the PCB board, and the guide protective cover is fixedly installed on the PCB board and covers the power terminal, wherein the guide protective cover does not contact the power terminal, and the guide protective cover is provided with a guide hole corresponding to the clamping and guiding space of the power terminal.

9. The power connector of claim 8, wherein: The guide cover includes a cover plate and several legs fixed to the lower end of the cover plate, which are fixed to the PCB board.

10. The power connector of claim 9, wherein: The PCB board is provided with several limiting holes that are adapted to the legs; at least two legs have a pair of elastic buckles formed at their lower ends. The distance between the upper end face of the buckle and the lower end face of the leg is adapted to the thickness of the PCB board. When the elastic buckle passes through the limiting hole, the lower end face of the leg abuts against the upper surface of the PCB board, and the upper end face of the buckle abuts against the lower surface of the PCB board, so that the leg and the PCB board are locked in a certain position.

Images