CN217544981U

CN217544981U - Electronic equipment with welding-free power pins

Info

Publication number: CN217544981U
Application number: CN202221097108.3U
Authority: CN
Inventors: 孟世飞; 郑小文; 江桂斌
Original assignee: Fancheng Xiamen Intelligent Manufacturing Co ltd
Current assignee: Fancheng Xiamen Intelligent Manufacturing Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-10-04
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a welding-free electronic device for power pins, which comprises a shell, a circuit board and a spring plate electrode; the elastic sheet electrode is a stamping part and comprises an elastic connecting part, an upper supporting part, a connecting part and a lower supporting part which are sequentially connected; the upper supporting part comprises two widened wings, and a first supporting surface is formed by bending the two wings; one or a pair of notches are arranged between the upper supporting part and the lower supporting part to form a connecting part; a power supply jack and a power supply bonding pad are arranged on the substrate of the circuit board, and the section of the power supply jack is slightly larger than that of the lower supporting part; when the circuit board is installed, the lower supporting part is inserted into the power supply jack, the connecting part is twisted and deformed by twisting the lower supporting part, so that an included angle is formed between the lower supporting part below the connecting part and the power supply jack to form a second supporting surface, the second supporting surface is matched with the first supporting surface to clamp the substrate of the circuit board, and finally two wings of the upper supporting part are electrically connected with the power supply bonding pad; when the circuit board is mounted in the housing, the elastic electrode is elastically connected to the power supply pin provided on the housing.

Description

Electronic equipment with welding-free power pins

Technical Field

The utility model relates to a power adapter field especially relates to a power is participated in and is exempted from electronic equipment that welds.

Background

In the existing products such as power adapters, there are various ways for electrically connecting the circuit board and the power pins, such as:

(1) The power pins are soldered directly to the circuit board at one end within the adapter housing. This approach can also be subdivided into two approaches: one is to weld the power pins on the circuit board first, and then install the circuit board welded with the power pins into the adapter housing, and in this way, there is a gap between the power pins and the adapter housing, and the waterproof and dustproof effects are poor. The second is to firstly mould the power supply pin and a part of the adapter shell together (namely, the power supply pin is embedded on the shell in a way of injection moulding), then the circuit board is arranged in the shell, and then the power supply pin is directly welded on the circuit board. When the soldering point is on the component surface of the circuit board, the board material of the circuit board used by the circuit board is required to be at least a double-sided board, and a larger space is reserved on the component surface of the circuit board to facilitate the soldering operation of the power supply pins.

(2) And a wire connection mode is adopted. And two ends of the lead are respectively welded on the power pin and the circuit board. The method has the problems of multiple working procedures, long consumed working hours, low efficiency, low reliability and the like.

(3) The mode of elastic sheet electrode connection is adopted. The power pin is lack of elasticity due to the thickness, so that the power pin is directly abutted with the circuit board to form reliable conductive connection, and the power pin is required to be connected through the elastic sheet electrode. The elastic sheet electrode is fixed on the power pin, then the power pin and one part of the shell of the adapter are molded together, then the power pad is arranged on the circuit board, and after the circuit board is arranged in the shell, the elastic sheet electrode is abutted against the power pad of the circuit board, so that the conductive connection between the power pin and the circuit board is realized. However, in this method, two groups of materials, namely the power pin and the spring plate electrode, need to be assembled together, and reliable connection between the power pin and the spring plate electrode is ensured, so that the process has certain complexity, and the production efficiency is affected to a certain extent.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the present invention is directed to a soldering-free electronic device, which improves the production efficiency by using appropriate parts to realize the conductive connection between the power pin and the internal circuit board in a soldering-free manner.

In order to achieve the above object, the present invention provides a soldering-free electronic device, which comprises a housing, a circuit board and a spring plate electrode;

the elastic sheet electrode is a stamping part and comprises an elastic connecting part, an upper supporting part, a supporting connecting part and a lower supporting part which are sequentially connected; the upper supporting part comprises two widened wings, and a first supporting surface is formed by bending the two wings; one or a pair of gaps are arranged between the upper supporting part and the lower supporting part to form the supporting connecting part;

a rectangular or oblong power supply jack and a power supply bonding pad are arranged on a substrate of the circuit board; the cross section of the power jack is slightly larger than that of the lower supporting part;

when the elastic sheet electrode is installed, the lower supporting part of the elastic sheet electrode is inserted into the power supply jack until two wings of the upper supporting part are abutted against the power supply pad, the lower supporting part is twisted to enable the supporting connecting part to be twisted and deformed, so that an included angle is formed between the lower supporting part and the power supply jack to form a second supporting surface, the second supporting surface is matched with the first supporting surface to clamp a substrate of a circuit board, and finally the two wings of the upper supporting part are electrically connected with the power supply pad;

two or three power pins are pre-embedded in the shell, and the part of each power pin extending into the shell is elastically connected with the corresponding elastic sheet electrode.

Further, the elastic connecting part comprises an elbow as a contact; the elbow of the elastic connecting part is abutted against the corresponding power plug pin to form elastic connection.

Further, an obtuse angle is formed between the elastic connecting part and the upper supporting part.

Furthermore, the elastic sheet electrode is made of elastic copper alloy.

Furthermore, the elastic sheet electrode is made of elastic steel alloy.

Furthermore, the thickness of the alloy plate used by the elastic sheet electrode is 0.2mm-0.6mm.

Further, the width of the lower support part is 3mm-5mm.

Furthermore, the width of the supporting connecting part is 2mm-4mm.

Furthermore, the notch is in the shape of a horn mouth, and the included angle of the horn mouth is 2-90 degrees.

The utility model discloses a following technological effect:

the utility model relates to an electronic equipment such as power adapter to the mode of exempting from to weld makes the power pad on shell fragment electrode and the circuit board establish stable electrically conductive connection, and the rethread shell fragment electrode is established the power with elastic connection's mode and is participated in the stable electrically conductive connection with the shell fragment electrode, thereby has avoided participating in the welding action of being connected with the circuit board with the power, simplifies production technology, improves reliability and production efficiency.

Drawings

Fig. 1 is a schematic diagram of a circuit board and a spring plate electrode of an exemplary power adapter of the present invention;

fig. 2 is a schematic structural view of the spring plate electrode of the present invention;

FIG. 3 is a diagram illustrating an implementation step of the present invention for mounting the spring electrodes on the circuit board;

fig. 4 is an external view of an example of the power adapter of the present invention.

Fig. 5 is a cross-sectional view of an example of a power adapter of the present invention.

Wherein:

10-a circuit board; 11-power jack; 12-power supply pad; 20-spring plate electrode; 21-an elastic connection; 22-an upper support portion; 23-a lower support; 24-a notch; 25-a support connection; 30-a housing; 31-plastic parts; 32-power pins; 33-a power supply output line; 211-elbow; 221. 222-a wing portion; 241-bottom of the indentation.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 5, the present invention provides an embodiment of a soldering-free electronic device, such as a power adapter, having power pins. In this example, the power adapter is composed of an injection-molded case 30, a circuit board 10, a spring plate electrode 20, and the like. The housing 30 includes a plastic member 31, a power plug 32, and a power output line 33.

The spring plate electrode 20 is formed by integrally punching and molding an elastic alloy material with good conductivity, and the plane of the spring plate electrode 20 is unfolded into a cross-like shape and comprises an elastic connecting part 21, an upper supporting part 22, a supporting connecting part 25 and a lower supporting part 23 which are sequentially connected. The elastic connecting part 21 is bent to form an elbow 211 during stamping, preferably, an obtuse angle is formed between the elastic connecting part 21 and the upper supporting part 22, so that the elastic connecting part 21 can be conveniently bent towards a specified direction during stress, and the elastic connection between the elastic connecting part 21 and the power supply pin 32 can be better controlled; an upper support part 22 having two

widened wing parts

221, 222, the two

wing parts

221, 222 being bent to form a U-shaped structure during punching to form a first support surface; the support connection portion 25 is formed by providing two notches 24 (or one notch) between the upper support portion 22 and the lower support portion 23. The location of the notch 24 is determined by the substrate thickness of the circuit board 10. Preferably, the notch 24 is flared, wherein 241 is the bottom of the notch 24. The angle of the flare is 2-90 deg., preferably 5-30 deg..

In the present embodiment, as a preferable aspect:

the alloy material used for the dome electrode 20 includes elastic copper alloy materials such as antimony bronze, aluminum bronze, beryllium bronze, titanium bronze and the like, and the thickness range of the alloy plate is 0.2mm-0.6mm. As a less preferred solution, the spring electrode 20 may also be made of an elastic steel alloy material.

The width of the lower support 23 is 3mm to 5mm.

The width of the support connection part 25 is 2mm-4mm and is smaller than the width of the lower support part.

The circuit board 10 has 2 or 3 power supply jacks 11 disposed on a substrate, and power supply pads 12 disposed around the power supply jacks 11. The power jack 11 is generally rectangular or oblong in shape, and has a cross section slightly larger than that of the lower support portion 23 of the dome electrode 20.

When the spring sheet electrode 20 is installed, the spring sheet electrode 20 is inserted into the power supply jack 11 on the circuit board 10 from the welding surface of the circuit board 10 until the

wing parts

221 and 222 of the upper supporting part abut against the power supply pad 12; the lower support part 23 extending from the power jack 11 is twisted by the tool to distort the support connection part 25 connected to the lower support part 23, so that the lower support part 23 and the power jack 11 form an included angle to form a second support surface, thereby preventing the spring plate electrode 20 from being pulled out of the power jack 11. The length is shortened due to the torsional deformation of the support connection portion 25, so that the upper support portion 22 and the lower support portion 23 clamp the circuit board 10, and the

wing portions

221 and 222 of the upper support portion 22 and the power supply pad 12 maintain an abutting state to form a stable conductive connection.

The power supply pins 32 are embedded in the housing 30 by injection molding, and the number of the power supply pins 32 is usually 2 or 3.

During final assembly, the circuit board 10 with the spring plate electrode 20 mounted thereon is installed in the housing 30, and the parts of the power pins 32 embedded in the housing 30 in the housing are respectively elastically connected with the elastic connection parts 21 of the corresponding spring plate electrodes 20 to form stable conductive connection. Specifically, the elbow 211 of the elastic connection portion 21 abuts against the power supply pin 32, and the elastic connection portion 21 is deformed by the abutment, so that the angle between the elastic connection portion 21 and the upper support portion 22 is reduced.

Has the advantages that:

the power adapter of the embodiment enables the elastic sheet electrode to be in stable conductive connection with the power supply bonding pad on the circuit board in a welding-free mode, and then the stable conductive connection between the power supply pin and the elastic sheet electrode is established in an elastic connection mode through the elastic sheet electrode, so that the welding action of connecting the power supply pin with the circuit board is avoided, the production process is simplified, and the reliability and the production efficiency are improved.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a power is participated in and is exempted from electronic equipment that welds which characterized in that: comprises a shell, a circuit board and a spring plate electrode;

the elastic sheet electrode is a stamping part and comprises an elastic connecting part, an upper supporting part, a supporting connecting part and a lower supporting part which are sequentially connected; the upper supporting part comprises two widened wings, and a first supporting surface is formed by bending the two wings; one or a pair of notches are arranged between the upper supporting part and the lower supporting part to form the supporting connecting part;

a rectangular or oblong power supply jack and a power supply pad are arranged on the substrate of the circuit board; the section of the power supply jack is slightly larger than that of the lower supporting part;

2. The solder-free electronic device for a power pin of claim 1, wherein: the elastic connecting part comprises an elbow as a contact; the elbow of the elastic connecting part is abutted against the corresponding power plug pin to form elastic connection.

3. The solder-free electronic device of claim 1, wherein: an obtuse angle is formed between the elastic connecting part and the upper supporting part.

4. The solder-free electronic device of claim 1, wherein: the elastic sheet electrode is made of elastic copper alloy.

5. The solder-free electronic device for a power pin of claim 1, wherein: the elastic sheet electrode is made of elastic rigid alloy.

6. The solder-free electronic device of claim 1, wherein: the thickness of the alloy plate used by the elastic sheet electrode is 0.2mm-0.6mm.

7. The solder-free electronic device for a power pin of claim 1, wherein: the width of the lower supporting part is 3mm-5mm.

8. The solder-free electronic device of claim 1, wherein: the width of the supporting connection part is 2mm-4mm.

9. The solder-free electronic device for a power pin of claim 1, wherein: the notch is in a bell mouth shape, and the included angle of the bell mouth is 2-90 degrees.