A reinforced connector with SMT and THR soldering

Abstract

The utility model relates to the technical field of electronic connectors, and in particular to a reinforced connector with SMT and THR welding, comprising a plastic shell, a plurality of conductive terminals in a rectangular array transversely penetrating between the left and right ends of the plastic shell, and a PCB arranged at the lower end of the plastic shell, the front and rear ends of the plastic shell being fixedly connected with a fixing plate through a longitudinal locking portion, and the bottoms of the left and right ends of the fixing plate being integrally fixedly connected with a THR solder foot penetrating downwardly through the PCB. In the utility model, the original fixing plate and fixing seat structure are scientifically and rationally improved, an inner concave side buckle, a positioning tongue and an outer protrusion are arranged on the fixing plate, and a side slide groove and a positioning groove are arranged on the fixing seat, so that the fixing plate can be fixed on the fixing seat with a longitudinal comprehensive limit, effectively reducing the occurrence of the problem of the fixing plate being separated from the fixing seat due to external force, thereby improving the stability of the connection of the plastic shell to the PCB with the assistance of the fixing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic connectors, in particular to a reinforced connector with SMT and THR welding. Background Art

[0002] An electronic connector (also often called a circuit connector or electrical connector) is a conductor device that bridges two conductors in a loop so that current or signals can flow from one conductor to another. An electronic connector is an electrical system that provides a separable interface for connecting two sub-electronic systems. In simple terms, the components used to complete the electrical connection between circuits or electronic machines become connectors, which are the bridges between the two.

[0003] like Figure 5 As shown, it is a partial structure of the previous generation of electrical connector, in which an I-shaped hole is provided on the fixing plate, and the fixing seat on the plastic shell is also in the shape of an I-shaped hole. The fixing plate can be fixed to the fixing seat by sliding sideways, and then the plastic shell can be fixed to the PCB by THR welding feet. However, this electrical connector has the following shortcomings during actual use: although the fixing plate can be easily combined and locked on the side of the plastic shell, the locking force of the fixing plate after combination is relatively poor. When the fixing plate is subjected to a lateral force, the fixing plate is easy to separate from the fixing seat, thereby causing the plastic shell and the PCB to lose a stable fastening force. External force acting on the plastic shell is easy to cause the welding feet between the conductive terminal and the PCB to be deformed or broken.

[0004] In view of this, it is particularly important to design and manufacture a fixing plate connection structure that can stably fix the plastic housing and the PCB and has strong stability after assembly in the design, manufacture and actual use of electrical connectors. Utility Model Content

[0005] The purpose of the utility model is to solve the technical defects of the prior art in the above-mentioned records and to propose a reinforced connector with SMT and THR welding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A reinforced connector with SMT and THR welding, comprising a plastic shell, a plurality of conductive terminals in a rectangular array transversely installed between the left and right ends of the plastic shell, and a PCB arranged at the lower end of the plastic shell, the front and rear ends of the plastic shell are fixedly connected with fixing plates through longitudinal locking parts, the left and right ends of the fixing plates are integrally fixedly connected with THR solder feet that penetrate downwardly through the PCB, and the PCB is provided with THR electroplated through holes on the outside of the THR solder feet.

[0008] As a further description of the above technical solution:

[0009] The longitudinal locking portion includes a fixing seat integrally fixed on the front and rear ends of the plastic shell and facing the fixing plate, a positioning tongue integrally fixed to the middle of the fixing plate and penetrating downwardly through the fixing seat, a positioning groove opened in the middle of the fixing seat and used to accommodate the positioning tongue, an inwardly concave side buckle integrally fixed to the inner side of the fixing plate and penetrating inwardly through the left and right ends of the fixing seat, and a side sliding groove opened at the left and right ends of the fixing seat and corresponding to the inwardly concave side buckle.

[0010] As a further description of the above technical solution:

[0011] Two outer protrusions abutting against the inner wall of the positioning groove are symmetrically and fixedly connected to the left and right sides of the lower end of the positioning tongue.

[0012] As a further description of the above technical solution:

[0013] A circuit connection is established between the plurality of conductive terminals and the PCB via the electrical connection portion.

[0014] As a further description of the above technical solution:

[0015] The electrical connection part includes an SMT solder foot rotatably mounted on the left ends of the plurality of conductive terminals and bent at the lower end into a plane, and an SMT pad formed in a rectangular array on the upper end surface of the PCB and fitted with the lower ends of the SMT solder foot.

[0016] As a further description of the above technical solution:

[0017] The lower end of the plastic shell is symmetrically fixedly connected with an anti-deflection column that penetrates the PCB, and the PCB is provided with an anti-deflection hole corresponding to the anti-deflection column.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. In the utility model, the original fixing plate and fixing seat structure are scientifically and rationally improved, and an inner concave side buckle, a positioning tongue and an outer convex block are arranged on the fixing plate. At the same time, a side slide groove and a positioning groove are arranged on the fixing seat. The inner concave side buckle and the positioning tongue on the fixing plate can be respectively oriented and slid into the side slide groove and the positioning groove of the fixing seat. At this time, the fixing plate is semi-hiddenly locked and fixed on the fixing seat. This structure can fix the fixing plate on the fixing seat in a longitudinal comprehensive limit, effectively reducing the occurrence of the problem of the fixing plate being separated from the fixing seat due to external force, thereby improving the stability of the connection of the plastic shell to the PCB with the assistance of the fixing plate.

[0020] 2. In the present invention, the original conductive terminal connection pins are replaced with SMT solder feet, and corresponding SMT pads are provided on the PCB. When the plastic housing is fixed to a designated fixed position on the PCB by welding of a fixing sheet, the SMT solder feet on the conductive terminals can be flipped downward to fit with the SMT pads on the PCB, and then subsequent welding and fixing operations can be performed. This structure can make it easier to weld multiple conductive terminals to the PCB, and at the same time, the welding surface is larger and the welding efficiency is higher than that of the original DIP type welding process, thereby further improving the stability of the electrical connector after assembly and fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a reinforced connector with SMT and THR welding proposed by the utility model;

[0022] Figure 2 It is a three-dimensional disassembly schematic diagram of the reinforced connector in the utility model;

[0023] Figure 3 It is a longitudinal cross-sectional schematic diagram of the fixing seat in the utility model;

[0024] Figure 4 It is a schematic diagram of the structure after the plastic shell and the fixing plate are assembled in the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the previous generation of electrical connectors in the prior art.

[0026] Legend:

[0027] 1. Plastic shell; 101. Conductive terminal; 102. Fixed seat; 103. Side slide groove; 104. Positioning groove; 105. Anti-bias column; 2. PCB; 201. SMT pad; 202. THR plated through hole; 203. Anti-bias hole; 3. Fixed sheet; 301. THR solder foot; 302. Concave side buckle; 303. Positioning tongue; 304. External protrusion; 4. SMT solder foot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4The utility model provides a technical solution: a reinforced connector with SMT and THR welding, comprising a plastic shell 1, a plurality of conductive terminals 101 in a rectangular array and transversely installed between the left end and the right end of the plastic shell 1, and a PCB 2 arranged at the lower end of the plastic shell 1, the front end and the rear end of the plastic shell 1 are fixedly connected with a fixing plate 3 through a longitudinal locking portion, the left end and the right end bottom of the fixing plate 3 are integrally fixedly connected with a THR solder foot 301 that penetrates downward through the PCB 2, and a THR electroplated through hole 202 is arranged on the PCB 2 on the outer side of the THR solder foot 301.

[0030] Specifically, Figure 1-4 As shown, the longitudinal locking portion includes a fixing seat 102 integrally fixed to the front and rear ends of the plastic housing 1 and facing the fixing plate 3, a positioning tongue 303 integrally fixed to the middle of the fixing plate 3 and penetrating downwardly through the fixing seat 102, a positioning groove 104 provided in the middle of the fixing seat 102 and used to accommodate the positioning tongue 303, an inner concave side buckle 302 integrally fixed to the inner side of the fixing plate 3 and penetrating inwardly through the left and right ends of the fixing seat 102, and a fixing groove 104 provided at the left and right ends of the fixing seat 102 and corresponding to the inner concave side buckle 302. Corresponding to the side sliding groove 103, when the concave side buckle 302 slides vertically downward into the side sliding groove 103, the displacement and shaking of the fixing plate 3 in the X-axis and Y-axis directions on the fixing seat 102 can be limited. At the same time, when the positioning tongue 303 is inserted downward into the positioning groove 104, on the one hand, the displacement and shaking of the fixing plate 3 in the X-axis and Y-axis directions on the fixing seat 102 can be limited. On the other hand, a certain amount of damping feeling of sliding and pulling in the Z-axis direction can be generated to prevent the fixing plate 3 from shaking vertically and detaching from the fixing seat 102.

[0031] Among them, two outer protrusions 304 that abut against the inner wall of the positioning groove 104 are symmetrically fixedly connected to the left and right sides of the lower end of the positioning tongue 303, which can increase the contact area between the lower end of the positioning tongue 303 and the positioning groove 104, so that after the positioning tongue 303 slides into the positioning groove 104, it can increase a certain degree of locking force, thereby reducing the possibility of the fixing plate 3 accidentally detaching from the positioning groove 104 on the fixing base 102.

[0032] Specifically, Figure 1-4 As shown, a circuit connection is established between the multiple conductive terminals 101 and the PCB 2 through an electrical connection portion, wherein the electrical connection portion includes an SMT solder foot 4 rotatably mounted on the left end of the multiple conductive terminals 101 and bent into a plane at the lower end, and an SMT pad 201 formed in a rectangular array on the upper end surface of the PCB 2 and fitted with the lower end of the SMT solder foot 4. The multiple conductive terminals 101 can be soldered to the PCB 2 through the SMT solder foot 4, thereby realizing the circuit connection between the conductive terminals 101 and the PCB 2.

[0033] Specifically, Figure 2-4As shown, the lower end of the plastic shell 1 is symmetrically fixedly connected with an anti-deflection column 105 that penetrates the PCB 2, and the PCB 2 is provided with an anti-deflection hole 203 corresponding to the anti-deflection column 105. The arrangement of the anti-deflection column 105 and the anti-deflection hole 203, on the one hand, facilitates the positioning operation between the plastic shell 1 and the PCB 2 before welding, and on the other hand, when the plastic shell 1 is welded and fixed on the PCB 2, the horizontal displacement and shaking of the plastic shell 1 on the PCB 2 can be limited, thereby improving the stability of the plastic shell 1 and the PCB 2 after combination.

[0034] Working principle: When in use, first, the concave side buckle 302 and the positioning tongue 303 on the fixing plate 3 can be respectively oriented and slid into the side slide groove 103 and the positioning groove 104 of the fixing seat 102. At this time, under the locking action between the concave side buckle 302 and the side slide groove 103, and the abutment action between the outer protrusion 304 on the positioning tongue 303 and the positioning groove 104, the fixing plate 3 is comprehensively limited and fixed on the fixing seat 102. Secondly, the THR solder foot 301 on the fixing plate 3 can be aligned and inserted into the THR electroplated through hole 202 on the PCB2. At this time, the lower end face of the plastic shell 1 can be fitted with the upper end face of the PCB 2, and the anti-deflection column 105 on the plastic shell 1 can slide downward into the anti-deflection hole 203 on the PCB 2. At this time, the THR solder foot 301 can be fixed to the THR electroplated through hole 202 by welding, thus completing the connection between the plastic shell 1 and the PCB 2, and finally, the SMT soldering feet 4 on the conductive terminal 101 are rotated downward in layers to fit with the SMT pads 201 at the corresponding positions on the PCB 2, so that the circuit connection between the conductive terminal 101 and the PCB 2 can be carried out, and the SMT soldering operation between the conductive terminal 101 and the PCB 2 is completed.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reinforced connector with SMT and THR welding, comprising a plastic housing (1), a plurality of conductive terminals (101) arranged in a rectangular array and extending transversely between the left and right ends of the plastic housing (1), and a PCB (2) arranged at the lower end of the plastic housing (1), characterized in that: The front and rear ends of the plastic housing (1) are fixedly connected to a fixing plate (3) via a longitudinal locking portion, the bottoms of the left and right ends of the fixing plate (3) are integrally fixedly connected to a THR solder foot (301) that passes through the PCB (2) downward, and a THR electroplated through hole (202) is provided on the PCB (2) on the outside of the THR solder foot (301).

2. A reinforced connector with SMT and THR welding according to claim 1, characterized in that: The longitudinal locking portion comprises a fixing seat (102) integrally fixed on the front and rear ends of the plastic housing (1) and facing the fixing plate (3), a positioning tongue (303) integrally fixed on the middle of the fixing plate (3) and penetrating downwardly through the fixing seat (102), a positioning groove (104) provided in the middle of the fixing seat (102) and used to accommodate the positioning tongue (303), an inwardly concave side buckle (302) integrally fixed on the inner side of the fixing plate (3) and penetrating inwardly through the left and right ends of the fixing seat (102), and a side sliding groove (103) provided on the left and right ends of the fixing seat (102) and corresponding to the inwardly concave side buckle (302).

3. A reinforced connector with SMT and THR welding according to claim 2, characterized in that: Two outer protrusions (304) abutting against the inner wall of the positioning groove (104) are symmetrically fixedly connected to the left and right sides of the lower end of the positioning tongue (303).

4. A reinforced connector with SMT and THR welding according to claim 1, characterized in that: A circuit connection is established between the plurality of conductive terminals (101) and the PCB (2) via an electrical connection portion.

5. A reinforced connector with SMT and THR welding according to claim 4, characterized in that: The electrical connection portion comprises an SMT solder foot (4) rotatably mounted on the left end of a plurality of conductive terminals (101) and having its lower end bent into a plane, and an SMT solder pad (201) formed in a rectangular array on the upper end surface of the PCB (2) and fitted with the lower end of the SMT solder foot (4).

6. A reinforced connector with SMT and THR welding according to claim 1, characterized in that: The lower end of the plastic housing (1) is symmetrically fixedly connected with an anti-deflection column (105) penetrating the PCB (2), and the PCB (2) is provided with an anti-deflection hole (203) corresponding to the anti-deflection column (105).

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