CN210723402U - Welding-free connector plugging structure - Google Patents

Abstract

The utility model discloses a welding-free connector plug-in structure, which comprises an integrally formed connector, the connector comprises a terminal strength part, a holding force part, a transition part and an insertion part which are connected in sequence, and the terminal strength part and the holding force part are connected in sequence. , The transition part and the insertion part are arranged in the same linear direction; the thickness of the retaining force part, the transition part and the insertion part are the same, the width of the transition part is larger than the width of the insertion part, the width of the transition part is larger than the width of the retaining force part, and the width of the retaining force part is larger than that of the insertion part. The width direction surface is provided with a plurality of tooth slots; the width direction surface of the insertion part, the width direction surface of the transition part and the width direction surface of the holding force part are sequentially inserted into the PCB board hole in contact with the PCB board hole, and the width direction surface of the insertion part is inserted into the PCB board hole. When the surface, the width direction surface of the transition part and the width direction surface of the holding force part are respectively contacted with the PCB board hole, elastic deformation will occur; the connector of the utility model can be manufactured by injection molding during design, which is simple and convenient to manufacture.

Description

A solder-free connector plug-in structure

technical field

The utility model relates to the technical field of connectors, in particular to a welding-free connector plug-in structure.

Background technique

The main ways of connecting electronic connectors to PCBs include press-fit. The press-fit type connector has low cost, high efficiency, and simple operation, and has been widely used. Among them, the connector is the most widely used terminal structure. As shown in Figure 1, it is a connector produced by our company. The connector compresses the shrapnel through the PCB hole to generate a retaining force and connects the PCB circuit. It has the advantages of simple structure and easy insertion and removal. The size of the direction is large (the shrapnel in the molding direction and the shrapnel in the welding direction perpendicular to the molding direction are designed), it is not suitable for the embedded injection molding process, the production process is complicated, and the production cost is high, and the connector has insufficient hardness during use. The problem.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a welding-free connector plug-in structure, so as to solve the problems of complicated connector manufacturing process and high production cost in the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A welding-free connector plug-in structure includes an integrally formed connector, the connector includes a terminal strength portion, a holding force portion, a transition portion and an insertion portion connected in sequence, and the terminal strength portion, the holding force portion, The transition part and the insertion part are arranged in the same linear direction;

The thickness of the retaining force portion, the transition portion and the insertion portion are the same, the width of the transition portion is larger than the width of the insertion portion, the width of the transition portion is larger than the width of the retaining force portion, and the width of the retaining force portion is larger than that of the retaining force portion. There are multiple tooth slots on the width direction surface;

The width direction surface of the insertion portion, the width direction surface of the transition portion and the width direction surface of the holding force portion are sequentially inserted into the PCB board hole in contact with the PCB board hole, the width direction surface of the insertion portion, the width direction surface of the transition portion Both the surface and the width direction surface of the holding force part will elastically deform when they come into contact with the PCB board holes.

Further, it also includes a pre-insertion part, the pre-insertion part is connected with the insertion part, the pre-insertion part and the insertion part are arranged along the same linear direction, and the width of the pre-insertion part is smaller than that of the insertion part width. The width of the pre-insertion part is smaller than that of the insertion part, and it is more convenient to insert into the hole of the PCB board.

Further, the pre-insertion part and the insertion part are integrally formed. One-piece molding production, production is simple, convenient, save time.

Further, strength holes are provided on the thickness direction surfaces of the holding force portion, the transition portion and the insertion portion.

Further, the retaining force portion, the transition portion and the insertion portion are provided with elastic holes penetrating the thickness direction surface in the thickness direction. The provision of the elastic holes is to provide the retention force portion, the transition portion and the insertion portion with a guarantee of elastic deformation.

Further, the width of the terminal strength portion is greater than the width of the holding force portion, the thickness of the terminal strength portion is the same as the thickness of the holding force portion, and the connection between the terminal strength portion and the holding force portion is With connecting chamfer. The connection chamfer is in an arc shape, and the connection between the terminal strength part and the holding force part is designed in an arc shape to ensure the structural strength of the connection.

Further, the shape of the terminal strength portion is square.

Further, the material of the connector is brass, phosphor bronze or iron. Other materials with better ductility and fatigue resistance can also be used; the selection of this material can make the connector meet the requirements of use, and make the connector have a longer service life.

According to the above technical solutions, the embodiments of the present utility model have at least the following effects:

1. In the design of the connector of the present invention, the retaining force part, the transition part and the insertion part are designed with the same thickness, which is convenient to manufacture and can be manufactured by injection molding, which is simple to manufacture and saves costs; The first contact with the PCB board hole is easy to insert, and after entering the PCB board hole and contact with the holding force part, the tooth slot on the holding force part increases the holding force, and the width of the transition part is larger than the width of the holding force part, which reduces the connector falling off possible;

2. Strength holes are provided on the thickness direction surfaces of the retaining force portion, the transition portion and the insertion portion. The arrangement of the strength holes increases the hardness of the connector surface, increases the overall strength, and improves the overall service life.

Description of drawings

1 is a schematic structural diagram of a connector in the background technology;

2 is a schematic structural diagram of a connector according to a specific embodiment of the present invention;

Fig. 3 is the front view of Fig. 2;

Fig. 4 is the left side view of Fig. 2;

FIG. 5 is a schematic diagram of the connection between a connector and a PCB board hole according to a specific embodiment of the present invention.

Among them: 1. Terminal strength part; 2. Retaining force part; 3. Transition part; 4. Insertion part; 5. Pre-insertion part; 6. Tooth slot; 7. Elastic hole; 8. Strength hole; 9. Connection chamfer .

Detailed ways

In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer" and the like indicate the orientation or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present invention. The terms "front", "rear", "left", "right", "upper" and "lower" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions in the drawings. is the direction toward or away from the geometric center of a particular part.

As shown in FIG. 3, a welding-free connector plug-in structure, the connector in the utility model can be manufactured by integral injection molding due to its own structural characteristics, which is convenient to manufacture and low in cost. The tooth slots 6 are added on the left and right sides of the connector, which increases the holding force and makes the connection between the connector and the PCB board hole more firmly. The utility model drills strength holes 8 on the upper and lower surfaces of the connector to increase the overall strength of the connector. .

As shown in FIGS. 2-5 , the connector includes a terminal strength part 1 , a holding force part 2 , a transition part 3 , an insertion part 4 and a pre-insertion part 5 which are connected in sequence from top to bottom. The thickness of the terminal strength part 1 , the retaining force part 2 , the transition part 3 , the insertion part 4 and the pre-insertion part 5 are the same, and the thickness of the retaining force part 2 , the transition part 3 , the insertion part 4 and the pre-insertion part 5 are in the vertical downward direction. set up. On the one hand, this design enables smooth insertion, and on the other hand, it facilitates the manufacture of integral injection molding, which provides convenience for manufacture.

When the connector is inserted into the PCB board hole, the left and right sides of the pre-insertion part 5 contact the PCB board hole first, then the left and right sides of the insertion part 4, the left and right sides of the transition part 3, and finally the PCB board hole and the holding force part 2. The left and right sides touch and remain in this position. In design, the width of the pre-insertion portion 5 (the width direction is the left-right direction at 3 in the figure) is smaller than the width of the insertion portion 4 , and the width of the width portion 4 and the holding force portion 2 is smaller than that of the transition portion 3 . The width of the pre-insertion portion 5 is small, which is convenient for the device to be inserted into the hole of the PCB board, and the width of the transition portion 3 is large to prevent the connected connector from being separated from the retaining force portion 2 . In order to increase the contact effect between the holding force part 2 and the PCB board hole, the left and right reverse sides of the holding force part 2 are also provided with seven tooth slots 6, the intervals between the seven tooth slots 6 are the same, and the setting of the tooth slots 6 increases the PCB The friction when the board hole and the connector are in contact increases the holding force of the contact between the two and reduces the possibility of the connector falling off the PCB board.

As shown in FIG. 3 , the main body of the connector is further provided with an elastic hole 7 , and the elastic hole 7 penetrates the front and rear surfaces of the connector. The position of the elastic hole 7 is set in the middle of the transition part 3 , the holding force part 2 and the insertion part 4 , and the length direction of the elastic hole 7 is the same as the insertion direction of the connector. The provision of the elastic holes 7 is to make the transition part 3 , the holding force part 2 and the insertion part 4 have sufficient elasticity. The elasticity of the three can be determined according to the width of the elastic hole 7 , the greater the width, the greater the elasticity of the three. The elastic hole 7 in the utility model is designed as a hole penetrating the upper and lower surfaces, which is convenient for production and can be directly produced by stamping.

As shown in FIG. 3 , strength holes 8 are provided on the front and rear surfaces of the retaining force portion 2 , the transition portion 3 and the insertion portion 4 . There are many strength holes 8 , and the strength holes 8 have a small diameter. Increase the hardness of the connector surface and improve the overall strength. In the present invention, the terminal strength portion 1 is square, and the width of the terminal strength portion 1 is the largest, and the width of the terminal strength portion 1 is 1.6 mm; the left and right sides of the holding force portion 2 and the insertion portion 4 are uniformly graded, and the maximum width is both is 1mm, and the minimum width is 0.7mm; the left and right sides of the transition part 3 are gradually shaped, the maximum width is 1.2mm, and the minimum width is 1mm; the maximum width of the pre-insertion part 5 is 0.7mm, and the minimum width is 0.3mm; the connector The overall thickness is 0.6mm. The connection between the terminal strength part 1 and the holding force part 2 is provided with an arc-shaped connection chamfer 9, which can increase the connection strength of the two and ensure the overall service life.

It can be known from the technical common sense that the present invention can be realized by other embodiments without departing from its spirit or essential characteristics. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims (8)

1. A welding-free connector plugging structure is characterized by comprising an integrally formed connector, wherein the connector comprises a terminal strength part, a holding force part, a transition part and an insertion part which are sequentially connected, and the terminal strength part, the holding force part, the transition part and the insertion part are arranged along the same straight line direction;

the thicknesses of the holding force part, the transition part and the insertion part are the same, the width of the transition part is larger than that of the insertion part, the width of the transition part is larger than that of the holding force part, and a plurality of tooth grooves are arranged on the width direction surface of the holding force part;

the width direction face of the insertion portion, the width direction face of the transition portion and the width direction face of the retention portion are sequentially contacted with the PCB plate holes to be inserted into the PCB plate holes, and elastic deformation can occur when the width direction face of the insertion portion, the width direction face of the transition portion and the width direction face of the retention portion are respectively contacted with the PCB plate holes.

2. The connector receiving structure according to claim 1, further comprising a pre-insertion portion, wherein the pre-insertion portion is connected to the insertion portion, the pre-insertion portion and the insertion portion are arranged along a same linear direction, and a width of the pre-insertion portion is smaller than a width of the insertion portion.

3. The connector receiving structure according to claim 2, wherein the pre-insertion portion and the insertion portion are integrally formed.

4. The connector receiving structure according to claim 1, wherein the retaining portion, the transition portion, and the insertion portion are each provided with a strength hole in a thickness direction thereof.

5. The connector receiving structure according to claim 1, wherein the retaining portion, the transition portion, and the insertion portion are provided with elastic holes penetrating through a thickness direction surface in a thickness direction.

6. The connector inserting structure according to claim 1, wherein a width of the terminal strength portion is larger than a width of the holding force portion, a thickness of the terminal strength portion is the same as a thickness of the holding force portion, and a connection chamfer is provided at a connection portion of the terminal strength portion and the holding force portion.

7. The connector receiving structure according to claim 1, wherein the terminal strength portion is square in shape.

8. The connector receiving structure of claim 1, wherein the connector is made of brass, phosphor copper or iron.

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