Vertical surface-mounted connector

Abstract

The utility model relates to the technical field of electric connectors, in particular to a vertical surface-mounted connector, which comprises a terminal protective shell, a bent fixing sheet is arranged outside the terminal protective shell, a terminal is inserted in the terminal protective shell, and one end of the terminal extends and is bent outside the terminal protective shell to form a welding leg; the terminal protection shell abuts against the PCB through the positioning face of the end portion and is welded and fixed to the bent fixing piece through the welding foot. According to the utility model, the bending fixing sheet is arranged on the terminal protection shell, so that the fixed welding area of the terminal and the PCB is increased, in the use process of the connector, the terminal welding leg and the bending fixing sheet bear the pulling and inserting force together, the holding force of the connector on the PCB is enhanced, the reliability of the connector is improved, the size of the connector in the length direction can be reduced, and the cost of the connector is reduced. The space of the connector is reasonably utilized, and the design of the miniaturized connector saves the space in an equipment board; the SMT connector is especially suitable for the SMT connector of a low-core-number contact element.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a vertical surface mount connector. Background Art

[0002] SMT (surface mount technology) welding technology has the characteristics of high efficiency and stable welding quality, and is widely used in electronic equipment.

[0003] However, the dimensions of most surface mount connectors in the prior art are limited by the space of the entire device, and the contact pins are relatively small, especially for low-core contact products. This results in insufficient retention of the product on the PCB board, and there is a risk of the solder joints loosening or even falling off during the product's plugging and unplugging process.

[0004] Based on the problems in the prior art, the utility model provides a vertical surface mount connector. Utility Model Content

[0005] The utility model aims to provide a vertical surface mount connector to solve the technical problems in the prior art that the surface mount connector is limited by the installation space, the solder pin size is small and the distribution is uneven, and the holding force on the PCB board is insufficient during the plugging and unplugging process.

[0006] The technical solution of the utility model is: a vertical surface mount connector, including a terminal shell, a bent fixing plate is arranged on the outer wall of the terminal shell, a working cavity is arranged inside the terminal shell for accommodating and inserting the terminal, one end of the terminal extends out of the working cavity and is bent outside the terminal shell to form a welding foot; the terminal shell abuts against the PCB board through the positioning surface of the end, and is welded and fixed by the welding foot and the bent fixing plate; wherein the bent fixing plate and the welding foot are both extended and bent in the direction away from the outer wall of the terminal shell, and the bent bottom plane of the welding foot and the bent bottom plane of the fixing plate are not lower than the positioning surface.

[0007] Preferably, the terminal comprises a central connecting plate and a first clamping arm and a second clamping arm connected to both sides of the central connecting plate and arranged opposite to each other; the first clamping arm, the second clamping arm and the central connecting plate enclose a receiving cavity for inserting an external electrical component;

[0008] The outer arm surfaces of the first clamping arm and the second clamping arm at least partially abut against the wall surface of the working cavity and have interaction force; the external electrical component is inserted into the accommodating cavity and abuts against the first clamping arm and the second clamping arm on both sides.

[0009] Preferably, the first clamping arm and the second clamping arm both have an extension section and a clamping section, the extension section of the first clamping arm and / or the second clamping arm is integrally connected to the welding foot, and the welding foot and the clamping section are respectively arranged at two ends of the extension section;

[0010] The clamping sections on both sides extend toward each other along the direction close to the mating connection window of the working cavity, and are in an eight-shaped shape as a whole, and the small end opening of the eight-shaped shape faces the mating connection window of the working cavity.

[0011] Preferably, the first clamping arm and the bent fixing plate are arranged opposite to each other and fixed on the PCB board together, and the soldering feet on the first clamping arm and the bending directions of the bent fixing plate are arranged in opposite directions.

[0012] Preferably, the first clamping arm and the second clamping arm are both provided with the welding feet, and the welding feet on the first clamping arm and the second clamping arm are arranged opposite to each other and both extend toward the outside of the terminal housing;

[0013] The second clamping arm is fixedly connected to the PCB board by one of the following methods: bolt connection, bonding or welding.

[0014] Preferably, a pair of slideways are provided in the working cavity, and the first clamping arm and the second clamping arm are respectively inserted into the working cavity along the slideways on both sides.

[0015] Preferably, at least one positioning column is protrudingly provided on the positioning surface, and the positioning column is matched and connected with the mounting hole on the PCB board.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] (1) The utility model increases the fixed welding area between the terminal and the PCB board by arranging a bent fixing plate on the terminal housing. When the connector is in use, the terminal solder feet and the bent fixing plate jointly bear the plugging and unplugging force, thereby enhancing the holding force of the connector on the PCB board and improving the reliability of the connector. At the same time, the length direction of the connector can be reduced, the space of the connector can be reasonably utilized, the design of the connector can be miniaturized, and the space inside the equipment board can be saved. The utility model is particularly suitable for use in SMT connectors with low-core contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is an exploded view of the vertical surface mount connector of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the terminal described in the utility model;

[0021] Figure 3 A side cross-sectional view of the terminal of the utility model accommodated in the working cavity;

[0022] Figure 4This is a schematic diagram of the bent fixing piece of the utility model being arranged on the outer wall of the terminal housing;

[0023] Figure 5 This is a schematic diagram of the welding foot and the bent fixing sheet cooperating to achieve fixation in the first embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the first clamping arm and the second clamping arm of the utility model being fixed by the welding feet cooperating with each other;

[0025] Figure 7 It is a schematic diagram of the first clamping arm, the second clamping arm and the bent fixing sheet cooperating to achieve fixation in the utility model;

[0026] Wherein: 1. Terminal housing; 2. Terminal; 3. Bending fixing sheet;

[0027] 10. working chamber; 11. slideway; 12. positioning column; 13. positioning surface;

[0028] 21. first clamping arm; 22. second clamping arm; 23. middle connecting plate; 24. accommodating cavity;

[0029] 201, extension section; 202, clamping section; 203, welding foot. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0031] like Figure 1 As shown, a vertical surface mount connector includes a terminal housing 1, a plurality of working cavities 10 are arranged inside the terminal housing 1 to accommodate terminals 2, the terminals 2 are arranged vertically, the positioning surface 13 at the end of the bottom surface abuts against the PCB board, one end of the terminal 2 extends out of the working cavity 10 and is bent outside the terminal housing 1 to form a solder foot 203, which is fixed and welded on the PCB board. Before fixing the connector to the PCB board, the positioning column 12 on the positioning surface 13 is matched and connected with the mounting hole on the PCB board for positioning.

[0032] The external dimensions of the terminal housing 1 are affected by the space used, and the solder pins of the terminals connected to the PCB board are smaller in size. Usually, only one side of the solder pins is soldered to the PCB board. During the plugging and unplugging process, only one side is connected by soldering, resulting in insufficient retention of the product on the PCB board, which is prone to problems such as loose solder joints or even looseness.

[0033] A bent fixing sheet 3 is provided on the outer wall of the terminal housing 1. Figure 4As shown in the figure, the bent fixing piece 3 is pushed and fixed to the bottom of the terminal housing 1 along the outer wall of the terminal housing 1, and the bottom bent portion is welded and fixed to the PCB board. The bent fixing piece 3 and the soldering foot 203 are both extended and bent in the direction away from the outer wall of the terminal housing 1, and the bent bottom plane of the soldering foot and the bent bottom plane of the fixing piece are not lower than the positioning surface 13.

[0034] The bent plate of the bent fixing plate 3 fits the PCB board to increase the connection area, and the solder foot 203 of the terminal 2 and the bent fixing plate 3 jointly bear the plug-in and pull-out force, thereby improving the holding force of the connector on the PCB board and improving the reliability of the connector, which is particularly suitable for use in SMT connectors with a low number of contacts.

[0035] The terminal 2 includes a first clamping arm 21, a middle connecting plate 23 and a second clamping arm 22 which are integrally connected. Figure 2 The first clamping arm 21 and the second clamping arm 22 are arranged opposite to each other, and the first clamping arm 21, the second clamping arm 22 and the middle connecting plate 23 form an open accommodating cavity 24 with a C-shaped cross-section. After the external electrical component enters the working cavity 10, it is inserted into the accommodating cavity 24, and the barbs on the first clamping arm 21 and the second clamping arm 22 produce an interference fit with the side wall of the working cavity 10, so that the terminal is kept in the terminal housing 1 and does not fall off.

[0036] The first clamping arm 21 and the second clamping arm 22 are respectively inserted into the working chamber 10 along the slideways 11 on both sides of the working chamber 10. Figure 3 As shown in the figure, the first clamping arm 21 and the second clamping arm 22 both have an extension section 201 and a clamping section 202, the clamping sections 202 on both sides extend toward each other in the direction close to the mating connector window of the working chamber 10, and are in an eight-shaped shape as a whole, and the small end opening of the eight-shaped shape is facing the mating connector window of the working chamber 10; when the terminal 2 is in the state of being plugged in and docked with the external electrical component, the outer arm surfaces of the extension sections 201 on both sides abut against the wall surface of the working chamber 10 and have an interaction force (in a close contact state), and the external electrical component is placed in the accommodating chamber 24 and abuts against the first clamping arm 21 and the second clamping arm 22 on both sides, and the connection is stable.

[0037] At least one of the first clamping arm 21 and the second clamping arm 22 is connected to a welding foot 203 .

[0038] In one embodiment, referring to Figure 5 As shown, the first clamping arm 21 and the bent fixing plate 3 are arranged opposite to each other and fixed on the PCB board together, the solder foot 203 on the first clamping arm 21 and the bending direction of the bent fixing plate 3 are arranged opposite to each other, and the two bent parts are arranged side by side and opposite to each other to jointly bear and balance the plug-in and pull-out force.

[0039] In another embodiment, referring to the attached Figure 6As shown, the first clamping arm 21 and the second clamping arm 22 are both provided with welding feet 203, the welding feet 203 on both sides are arranged opposite to each other and both extend to the outside of the terminal housing 1, and the second clamping arm 22 is fixed to the PCB board by one of the methods including bolt connection, bonding or welding. The two groups of welding feet arranged opposite to each other on the terminal are fixed together to bear the insertion and extraction force.

[0040] In other embodiments, the first clamping arm 21 and the second clamping arm 22 are both provided with welding feet 203, the welding feet 203 on both sides are arranged opposite to each other and both extend to the outside of the terminal housing 1, and the bent fixing sheet 3 is symmetrically arranged on both sides of the positioning surface 13, as shown in the attached Figure 7 As shown in the figure, the first clamping arm 21 and the second clamping arm 22 are arranged on a pair of sides, the welding feet 203 are opposite to each other, and the two bent fixing plates 3 are arranged on the other pair of sides, extending and bending outward, and the welding feet in four directions jointly bear the insertion and extraction force to increase the holding force.

[0041] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A vertical surface mount connector, characterized in that: It comprises a terminal housing, wherein a bent fixing sheet is arranged on the outer wall of the terminal housing, a working cavity is arranged inside the terminal housing for receiving and inserting the terminal, and one end of the terminal extends out of the working cavity and is bent outside the terminal housing to form a welding foot; The terminal housing abuts against the PCB board through the positioning surface at the end, and is fixed by welding through the welding foot and the bent fixing sheet; The bent fixing sheet and the welding foot are both bent and extended in a direction away from the outer side wall of the terminal housing, and the bent bottom plane of the welding foot and the bent bottom plane of the fixing sheet are not lower than the positioning surface.

2. A vertical surface mount connector according to claim 1, characterized in that: The terminal comprises a central connecting plate and a first clamping arm and a second clamping arm connected to both sides of the central connecting plate and arranged opposite to each other; the first clamping arm, the second clamping arm and the central connecting plate enclose a receiving cavity for inserting an external electrical component; The outer arm surfaces of the first clamping arm and the second clamping arm at least partially abut against the wall surface of the working cavity and have interaction force; the external electrical component is inserted into the accommodating cavity and abuts against the first clamping arm and the second clamping arm on both sides.

3. A vertical surface mount connector according to claim 2, characterized in that: The first clamping arm and the second clamping arm both have an extension section and a clamping section, the extension section of the first clamping arm and / or the second clamping arm is integrally connected to the welding foot, and the welding foot and the clamping section are respectively arranged at two ends of the extension section; The clamping sections on both sides extend toward each other along the direction close to the mating connection window of the working cavity, and are in an eight-shaped shape as a whole, and the small end opening of the eight-shaped shape faces the mating connection window of the working cavity.

4. A vertical surface mount connector according to claim 3, characterized in that: The first clamping arm and the bent fixing sheet are arranged opposite to each other and fixed on the PCB board together, and the soldering feet on the first clamping arm and the bending directions of the bent fixing sheet are arranged in opposite directions.

5. The vertical surface mount connector according to claim 3, characterized in that: The welding feet are both provided on the first clamping arm and the second clamping arm, and the welding feet on the first clamping arm and the second clamping arm are arranged opposite to each other and both extend toward the outside of the terminal housing; The second clamping arm is fixedly connected to the PCB board by one of the following methods: bolt connection, bonding or welding.

6. The vertical surface mount connector according to claim 2, characterized in that: A pair of slideways are arranged in the working cavity, and the first clamping arm and the second clamping arm are respectively inserted into the working cavity along the slideways on both sides.

7. The vertical surface mount connector according to claim 1, characterized in that: At least one positioning column is protrudingly provided on the positioning surface, and the positioning column is matched and connected with the mounting hole on the PCB board.

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