Connector and connector assembly

Abstract

The invention discloses a connector and a connector assembly. The connector includes: a housing; the terminal is arranged in the shell and comprises a welding end which is used for being welded on a circuit board; and the pressing piece is arranged on the shell and is used for applying a preset pressing force on the welding end of the terminal. When the welding end of the terminal is welded, the welding end of the terminal is pressed on the circuit board by the pressing piece so as to prevent pseudo soldering. Therefore, the welding quality is improved.

Description

Technical Field

[0001] The invention relates to a connector and a connector assembly comprising the connector. Background Art

[0002] In the prior art, the terminals of the connector are usually soldered to the surface of the circuit board in a surface mount manner. During soldering, the terminals of the connector come into contact with the solder paste on the circuit board under the action of the connector's own weight. When the solder paste is heated and melted, the molten liquid tin will climb onto the terminals under the action of its own surface tension. After the liquid tin is cooled and solidified, the welding between the terminal and the circuit board is achieved. However, during soldering, the shell of the connector will release residual stress and thermal expansion after being heated, which will cause the terminal to move easily during the heating process, resulting in the possibility that the terminal will be out of contact with the solder paste, thereby failing to complete the soldering and forming a virtual solder joint. This will reduce the quality of welding. Summary of the invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, a connector is provided, comprising: a housing; a terminal, arranged in the housing, comprising a welding end for welding to a circuit board; and a pressing member, mounted on the housing, for applying a predetermined pressing force on the welding end of the terminal to press the welding end onto the circuit board.

[0005] According to an exemplary embodiment of the present invention, the pressing member is movably installed in the shell and can move between a pre-locking position and a final locking position; when the pressing member is in the pre-locking position, the welding end of the terminal is not pressed by the pressing member; when the pressing member is in the final locking position, the pressing member applies a predetermined pressing force on the welding end of the terminal.

[0006] According to another exemplary embodiment of the present invention, the pressing member includes a main body and a pre-locking buckle and a final-locking buckle formed on the main body; a mounting groove, a pre-locking step and a final-locking buckle are formed on the shell, and the main body of the pressing member is movably mounted in the mounting groove; when the pressing member is in the pre-locking position, the pre-locking buckle engages with the pre-locking step to keep the pressing member in the pre-locking position; when the pressing member is in the final-locking position, the final-locking buckle engages with the final-locking buckle to keep the pressing member in the final-locking position.

[0007] According to another exemplary embodiment of the present invention, the main body of the pressing member has two opposite ends in its longitudinal direction, and the pre-locking buckles are respectively formed on the two ends of the main body; the mounting groove has two opposite end walls in its longitudinal direction, and the pre-locking steps are respectively formed on the inner sides of the two end walls of the mounting groove.

[0008] According to another exemplary embodiment of the present invention, the mounting groove has an opening and a bottom wall opposite to each other in the height direction thereof, and the final locking groove is formed on the bottom wall of the mounting groove; the final locking buckle is protrudingly formed on the surface of the main body of the pressing member facing the bottom wall of the mounting groove.

[0009] According to another exemplary embodiment of the present invention, a positioning groove is further formed on the surface of the main body of the pressing member facing the bottom wall of the mounting groove, a portion of the welding end of the terminal is positioned in the positioning groove, and the bottom surface of the positioning groove is used to press on the welding end of the terminal to apply a predetermined pressing force on the welding end of the terminal.

[0010] According to another exemplary embodiment of the present invention, the welding end of the terminal has at least one bending portion, so that the welding end of the terminal can be elastically deformed when pressed by the pressing member, thereby enabling the welding end of the terminal to be pressed by the pressing member on circuit boards of different thicknesses.

[0011] According to another exemplary embodiment of the present invention, the welding end of the terminal includes: a welding portion for welding to the circuit board; and a pressing portion connected to the welding portion, the pressing portion of the welding end is bent into an arc shape, and the pressing member presses the welding portion of the welding end onto the circuit board by pushing the top of the pressing portion.

[0012] According to another exemplary embodiment of the present invention, the terminal also includes: a mating end for mating with a mating terminal of a mating connector; and a fixing portion connected between the welding end and the mating end, the fixing portion of the terminal being fixed into the shell to fix the terminal to the shell.

[0013] According to another exemplary embodiment of the present invention, the terminals include an upper row of terminals and a lower row of terminals, the welding ends of the upper row of terminals are used to be welded to the top surface of the circuit board, and the welding ends of the lower row of terminals are used to be welded to the bottom surface of the circuit board; and the pressing member includes an upper pressing member and a lower pressing member, the upper pressing member is used to press the welding ends of the upper row of terminals on the top surface of the circuit board, and the lower pressing member is used to press the welding ends of the lower row of terminals on the bottom surface of the circuit board.

[0014] According to another exemplary embodiment of the present invention, an upper mounting groove is formed on the top of the shell, and the upper pressing piece is movably mounted in the upper mounting groove of the shell and can move between a pre-locking position and a final locking position; when the upper pressing piece is in the pre-locking position, the welding ends of the upper row of terminals are not pressed by the upper pressing piece; when the upper pressing piece is in the final locking position, the upper pressing piece applies a predetermined pressing force on the welding ends of the upper row of terminals.

[0015] According to another exemplary embodiment of the present invention, upper pre-locking buckles are respectively formed on both ends of the upper pressing member, and upper pre-locking slots are respectively formed on the inner sides of the two end walls of the upper mounting groove of the shell; when the upper pressing member is in the pre-locking position, the upper pre-locking buckle engages with the upper pre-locking slot to keep the upper pressing member in the pre-locking position.

[0016] According to another exemplary embodiment of the present invention, a row of upper final locking buckles are formed on the bottom surface of the upper pressing member, and a row of upper final locking slots are formed on the bottom wall of the upper mounting groove of the shell; when the upper pressing member is in the final locking position, the row of upper final locking buckles engage with the row of upper final locking slots to keep the upper pressing member in the final locking position.

[0017] According to another exemplary embodiment of the present invention, a row of upper positioning grooves is formed on the bottom surface of the upper pressing member, and a portion of the welding ends of the upper row of terminals are respectively positioned in the row of upper positioning grooves, and the bottom surfaces of the row of upper positioning grooves are used to press on the welding ends of the upper row of terminals, respectively, so as to apply a predetermined pressing force on the welding ends of the upper row of terminals, respectively.

[0018] According to another exemplary embodiment of the present invention, a lower mounting groove is formed on the bottom of the shell, and the lower pressing piece is movably installed in the lower mounting groove of the shell and can move between a pre-locking position and a final locking position; when the lower pressing piece is in the pre-locking position, the welding end of the lower row of terminals is not pressed by the lower pressing piece; when the lower pressing piece is in the final locking position, the lower pressing piece applies a predetermined pressing force on the welding end of the lower row of terminals.

[0019] According to another exemplary embodiment of the present invention, lower pre-locking buckles are respectively formed on both ends of the lower pressing member, and lower pre-locking slots are respectively formed on the inner sides of the two end walls of the lower mounting groove of the shell; when the lower pressing member is in the pre-locking position, the lower pre-locking buckle engages with the lower pre-locking slot to keep the lower pressing member in the pre-locking position.

[0020] According to another exemplary embodiment of the present invention, a row of lower final locking buckles is formed on the top surface of the lower pressing member, and a row of lower final locking slots is formed on the bottom wall of the lower mounting groove of the shell; when the lower pressing member is in the final locking position, the row of lower final locking buckles engages with the row of lower final locking slots to keep the lower pressing member in the final locking position.

[0021] According to another exemplary embodiment of the present invention, a row of lower positioning grooves is formed on the top surface of the lower pressing member, a portion of the welding ends of the lower row of terminals are respectively positioned in the row of lower positioning grooves, and the bottom surfaces of the row of lower positioning grooves are used to press on the welding ends of the lower row of terminals, respectively, so as to apply a predetermined pressing force on the welding ends of the lower row of terminals, respectively.

[0022] According to another aspect of the present invention, a connector assembly is provided. The connector assembly comprises: the aforementioned connector; and a circuit board, to which the welding ends of the terminals of the connector are welded. When welding the welding ends of the terminals, the pressing member presses the welding ends of the terminals on the circuit board to prevent cold solder joints.

[0023] According to an exemplary embodiment of the present invention, the connector assembly further comprises a mating connector, which is mated with the connector, and the mating ends of the terminals of the connector are mated and connected with the mating terminals of the mating connector.

[0024] In the aforementioned exemplary embodiments according to the present invention, during welding, the welding end of the terminal is reliably pressed against the circuit board by the pressing member, thereby ensuring that the welding end of the terminal is in reliable contact with the circuit board, effectively avoiding the problem of cold soldering and improving the welding quality.

[0025] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the present invention, wherein the pressing member is in a pre-locking position;

[0027] Figure 2 A cross-sectional view along the front-to-back direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member is in a pre-locking position;

[0028] Figure 3 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present invention;

[0029] Figure 4A cross-sectional view along the left-right direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member is in a pre-locking position;

[0030] Figure 5 A cross-sectional view along the front-to-back direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member is in a final locking position;

[0031] Figure 6 A cross-sectional view along the left-right direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member is in a final locking position;

[0032] Figure 7 A three-dimensional schematic diagram showing upper and lower terminals of a connector according to an exemplary embodiment of the present invention;

[0033] Figure 8 A schematic diagram showing a pressing member of a connector according to an exemplary embodiment of the present invention pressing a soldering end of a terminal onto a circuit board. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0035] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0036] According to an overall technical concept of the present invention, a connector is provided. The connector comprises: a housing; a terminal, which is arranged in the housing and includes a welding end for welding to a circuit board; and a pressing member, which is mounted on the housing and is used to apply a predetermined pressing force on the welding end of the terminal. When welding the welding end of the terminal, the welding end of the terminal is pressed on the circuit board by the pressing member to prevent a cold solder joint.

[0037] According to another general technical concept of the present invention, a connector assembly is provided. The connector assembly includes: the aforementioned connector; and a circuit board, to which the welding ends of the terminals of the connector are welded. When welding the welding ends of the terminals, the pressing member presses the welding ends of the terminals on the circuit board to prevent cold solder joints.

[0038] Figure 1 A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the present invention, wherein the pressing member 3 is in a pre-locking position; Figure 2 A cross-sectional view along the front-to-back direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member 3 is in a pre-locking position; Figure 3 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present invention; Figure 4 A cross-sectional view along the left-right direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member 3 is in a pre-locking position; Figure 5 A cross-sectional view along the front-to-back direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member 3 is in a final locking position; Figure 6 A cross-sectional view along the left-right direction of a connector according to an exemplary embodiment of the present invention is shown, wherein the pressing member 3 is in a final locking position; Figure 7 A three-dimensional schematic diagram showing upper and lower terminals 2 of a connector according to an exemplary embodiment of the present invention; Figure 8 A schematic diagram showing a connector pressing member 3 pressing a soldering end 21 of a terminal 2 onto a circuit board 4 according to an exemplary embodiment of the present invention.

[0039] like Figures 1 to 8 As shown, in an exemplary embodiment of the present invention, a connector is disclosed. The connector includes: a housing 1, a terminal 2 and a pressing member 3. The terminal 2 is arranged in the housing 1. The terminal 2 includes a welding end 21 for welding to a circuit board 4. The pressing member 3 is mounted on the housing 1 and is used to apply a predetermined pressing force F on the welding end 21 of the terminal 2.

[0040] like Figures 1 to 8 As shown, in the illustrated embodiment, when welding the welding end 21 of the terminal 2, the welding end 21 of the terminal 2 is pressed on the circuit board 4 by the pressing member 3. In this way, it is possible to prevent a cold solder joint from occurring between the welding end 21 of the terminal 2 and the circuit board 4.

[0041] like Figures 1 to 8 As shown, in the illustrated embodiment, the pressing member 3 is movably mounted in the housing 1 and can be in the pre-locking position ( Figure 1-2 and Figure 4 Position shown) and final locking position ( Figure 5-6 and Figure 8 When the pressing member 3 is in the pre-locking position, the welding end 21 of the terminal 2 is not pressed by the pressing member 3. When the pressing member 3 is in the final locking position, the pressing member 3 applies a predetermined pressing force F on the welding end 21 of the terminal 2.

[0042] like Figures 1 to 8As shown, in the illustrated embodiment, the pressing member 3 includes a main body 30 and a pre-locking buckle 31 and a final locking buckle 32 formed on the main body 30. A mounting groove 10, a pre-locking step 11 and a final locking groove 12 are formed on the housing 1. The main body 30 of the pressing member 3 is movably mounted in the mounting groove 10.

[0043] like Figures 1 to 8 As shown, in the illustrated embodiment, when the pressing member 3 is in the pre-locking position, the pre-locking buckle 31 engages with the pre-locking step 11 to keep the pressing member 3 in the pre-locking position.

[0044] like Figures 1 to 8 As shown, in the illustrated embodiment, when the pressing member 3 is in the final locking position, the final locking buckle 32 engages with the final locking groove 12 to keep the pressing member 3 in the final locking position.

[0045] like Figures 1 to 8 As shown, in the illustrated embodiment, the main body 30 of the pressing member 3 has two opposite ends in the longitudinal direction, and pre-locking buckles 31 are respectively formed on the two ends of the main body 30. The mounting groove 10 has two opposite end walls in the longitudinal direction, and pre-locking steps 11 are respectively formed on the inner sides of the two end walls of the mounting groove 10.

[0046] like Figures 1 to 8 As shown, in the illustrated embodiment, the mounting groove 10 has an opening and a bottom wall opposite to each other in the height direction thereof, and a final locking groove 12 is formed on the bottom wall of the mounting groove 10. The final locking buckle 12 is protrudingly formed on the surface of the main body 30 of the pressing member 3 facing the bottom wall of the mounting groove 10.

[0047] like Figures 1 to 8 As shown, in the illustrated embodiment, a positioning groove 33 is further formed on the surface of the main body 30 of the pressing member 3 facing the bottom wall of the mounting groove 10. A portion of the welding end 21 of the terminal 2 is positioned in the positioning groove 33, and the bottom surface of the positioning groove 33 is used to press on the welding end 21 of the terminal 2 to apply a predetermined pressing force F on the welding end 21 of the terminal 2.

[0048] like Figures 1 to 8 As shown, in the illustrated embodiment, the soldering end 21 of the terminal 2 has at least one bent portion, so that the soldering end 21 of the terminal 2 can be elastically deformed when pressed by the pressing member 3, so that the soldering end 21 of the terminal 2 can be pressed by the pressing member 3 on the circuit board 4 of different thicknesses. In this way, the application range of the connector can be expanded.

[0049] like Figures 1 to 8As shown, in the illustrated embodiment, the welding end 21 of the terminal 2 includes: a welding portion 21a and a pressing portion 21b. The welding portion 21a is used to be welded to the circuit board 4. The pressing portion 21b is connected to the welding portion 21a. In the illustrated embodiment, the pressing portion 21b of the welding end 21 is bent into an arc, and the pressing member 3 presses the welding portion 21a of the welding end 21 on the circuit board 4 by pushing the top of the pressing portion 21b.

[0050] like Figures 1 to 8 As shown, in the illustrated embodiment, the terminal 1 further includes: a mating end 22 and a fixing portion 23. The mating end 22 is used to mate with a mating terminal (not shown) of a mating connector (not shown). The fixing portion 23 is connected between the welding end 21 and the mating end 22. The fixing portion 23 of the terminal 1 is fixed to the housing 1 to fix the terminal 1 to the housing 1.

[0051] like Figures 1 to 8 As shown, in the illustrated embodiment, the terminal 2 includes an upper row of terminals 2' and a lower row of terminals 2". The welding ends 21 of the upper row of terminals 2' are used to be welded to the top surface of the circuit board 4, and the welding ends 21 of the lower row of terminals 2" are used to be welded to the bottom surface of the circuit board 4. The pressing member 3 includes an upper pressing member 3' and a lower pressing member 3". The upper pressing member 3' is used to press the welding ends 21 of the upper row of terminals 2' onto the top surface of the circuit board 4, and the lower pressing member 3" is used to press the welding ends 21 of the lower row of terminals 2" onto the bottom surface of the circuit board 4.

[0052] like Figures 1 to 8 As shown, in the illustrated embodiment, an upper mounting groove 10' is formed on the top of the housing 1. The upper pressing member 3' is movably mounted in the upper mounting groove 10' of the housing 1 and can move between a pre-locking position and a final locking position.

[0053] like Figures 1 to 8 As shown, in the illustrated embodiment, when the upper pressing member 3' is in the pre-locking position, the welding end 21 of the upper row terminal 2' is not pressed by the upper pressing member 3'. When the upper pressing member 3' is in the final locking position, the upper pressing member 3' applies a predetermined pressing force F on the welding end 21 of the upper row terminal 2'.

[0054] like Figures 1 to 8 As shown, in the illustrated embodiment, upper pre-locking buckles 31' are respectively formed on both ends of the upper pressing member 3', and upper pre-locking slots 11' are respectively formed on the inner sides of the two end walls of the upper mounting groove 10' of the housing 1. When the upper pressing member 3' is in the pre-locking position, the upper pre-locking buckle 31' engages with the upper pre-locking slot 11' to keep the upper pressing member 3' in the pre-locking position.

[0055] like Figures 1 to 8As shown, in the illustrated embodiment, a row of upper final locking buckles 32' is formed on the bottom surface of the upper pressing member 3', and a row of upper final locking grooves 12' is formed on the bottom wall of the upper mounting groove 10' of the housing 1. When the upper pressing member 3' is in the final locking position, a row of upper final locking buckles 32' engages with a row of upper final locking grooves 12' to keep the upper pressing member 3' in the final locking position.

[0056] like Figures 1 to 8 As shown, in the illustrated embodiment, a row of upper positioning grooves 33' is formed on the bottom surface of the upper pressing member 3', and a portion of the welding ends 21 of the upper row of terminals 2' are respectively positioned in the row of upper positioning grooves 33', and the bottom surfaces of the row of upper positioning grooves 33' are used to press on the welding ends 21 of the upper row of terminals 2', respectively, so as to apply a predetermined pressing force F on the welding ends 21 of the upper row of terminals 2'.

[0057] like Figures 1 to 8 As shown, in the illustrated embodiment, a lower mounting groove 10'' is formed on the bottom of the shell 1, and the lower pressing member 3'' is movably mounted in the lower mounting groove 10'' of the shell 1 and can move between a pre-locking position and a final locking position.

[0058] like Figures 1 to 8 As shown, in the illustrated embodiment, when the lower pressing member 3" is in the pre-locking position, the welding end 21 of the lower row terminal 2" is not pressed by the lower pressing member 3"; when the lower pressing member 3" is in the final locking position, the lower pressing member 3" applies a predetermined pressing force F on the welding end 21 of the lower row terminal 2".

[0059] like Figures 1 to 8 As shown, in the illustrated embodiment, lower pre-locking buckles 31" are respectively formed on both ends of the lower pressing member 3", and lower pre-locking slots 11" are respectively formed on the inner sides of the two end walls of the lower mounting groove 10" of the shell 1. When the lower pressing member 3" is in the pre-locking position, the lower pre-locking buckle 31" engages with the lower pre-locking slot 11" to keep the lower pressing member 3" in the pre-locking position.

[0060] like Figures 1 to 8 As shown, in the illustrated embodiment, a row of lower final locking buckles 32" is formed on the top surface of the lower pressing member 3", and a row of lower final locking grooves 12" is formed on the bottom wall of the lower mounting groove 10" of the shell 1. When the lower pressing member 3" is in the final locking position, a row of lower final locking buckles 32" engages with a row of lower final locking grooves 12" to keep the lower pressing member 3" in the final locking position.

[0061] like Figures 1 to 8As shown, in the illustrated embodiment, a row of lower positioning grooves 33" is formed on the top surface of the lower pressing member 3", and a portion of the welding ends 21 of the lower row of terminals 2" are respectively positioned in the row of lower positioning grooves 33", and the bottom surfaces of the row of lower positioning grooves 33" are used to press on the welding ends 21 of the lower row of terminals 2", respectively, so as to apply a predetermined pressing force F on the welding ends 21 of the lower row of terminals 2".

[0062] like Figures 1 to 8 As shown, in another exemplary embodiment of the present invention, a connector assembly is also disclosed. The connector assembly includes: a connector and a circuit board 4. The welding end 21 of the terminal 2 of the connector is welded to the circuit board 4. When welding the welding end 21 of the terminal 2, the pressing member 3 presses the welding end 21 of the terminal 2 on the circuit board 4 to prevent a cold solder joint.

[0063] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector assembly further includes a mating connector (not shown). The mating connector is mated with the connector. The mating end 22 of the terminal 2 of the connector is mated and connected with the mating terminal of the mating connector.

[0064] Those skilled in the art will appreciate that the embodiments described above are exemplary and may be improved upon by those skilled in the art. The structures described in the various embodiments may be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present invention.

[0065] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0066] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

[0067] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. A connector, characterized in that: include: Housing (1); A terminal (2) is arranged in the housing (1) and comprises a welding end (21) for welding to a circuit board (4); and A pressing member (3) is mounted on the housing (1) and is used to apply a predetermined pressing force (F) to the welding end (21) of the terminal (2) so as to press the welding end (21) onto the circuit board (4).

2. The connector according to claim 1, characterized in that: The pressing member (3) is movably mounted in the housing (1) and is capable of moving between a pre-locking position and a final locking position; When the pressing member (3) is in the pre-locking position, the welding end (21) of the terminal (2) is not pressed by the pressing member (3); When the pressing member (3) is in the final locking position, the pressing member (3) applies a predetermined pressing force (F) on the welding end (21) of the terminal (2).

3. The connector according to claim 2, characterized in that: The pressing member (3) comprises a main body (30) and a pre-locking buckle (31) and a final-locking buckle (32) formed on the main body (30); An installation groove (10), a pre-locking step (11) and a final locking groove (12) are formed on the housing (1), and the main body (30) of the pressing member (3) is movably installed in the installation groove (10); When the pressing member (3) is in the pre-locking position, the pre-locking buckle (31) engages with the pre-locking step (11) to keep the pressing member (3) in the pre-locking position; When the pressing member (3) is in the final locking position, the final locking buckle (32) engages with the final locking slot (12) to keep the pressing member (3) in the final locking position.

4. The connector according to claim 3, characterized in that: The main body (30) of the pressing member (3) has two opposite ends in its longitudinal direction, and the pre-locking buckles (31) are respectively formed on the two ends of the main body (30); The installation groove (10) has two end walls which are opposite to each other in the longitudinal direction, and the pre-locking steps (11) are respectively formed on the inner sides of the two end walls of the installation groove (10).

5. The connector according to claim 4, characterized in that: The installation groove (10) has an opening and a bottom wall that are opposite to each other in the height direction thereof, and the final locking groove (12) is formed on the bottom wall of the installation groove (10); The final locking buckle (12) is protrudingly formed on a surface of the main body (30) of the pressing member (3) that faces the bottom wall of the mounting groove (10).

6. The connector according to claim 5, characterized in that: A positioning groove (33) is also formed on the surface of the main body (30) of the pressing member (3) facing the bottom wall of the mounting groove (10). A portion of the welding end (21) of the terminal (2) is positioned in the positioning groove (33), and the bottom surface of the positioning groove (33) is used to press on the welding end (21) of the terminal (2) to apply a predetermined pressing force (F) on the welding end (21) of the terminal (2).

7. The connector according to claim 1, characterized in that: The welding end (21) of the terminal (2) has at least one bent portion, so that the welding end (21) of the terminal (2) can be elastically deformed when pressed by the pressing member (3), thereby enabling the welding end (21) of the terminal (2) to be pressed by the pressing member (3) onto circuit boards (4) of different thicknesses.

8. The connector according to claim 7, characterized in that: The welding end (21) of the terminal (2) comprises: A soldering portion (21a) for soldering to the circuit board (4); and The pressing portion (21b) is connected to the welding portion (21a), The pressing portion (21b) of the welding end (21) is bent into an arc shape, and the pressing member (3) presses the welding portion (21a) of the welding end (21) onto the circuit board (4) by pushing the top of the pressing portion (21b).

9. The connector according to claim 1, characterized in that: The terminal (1) further comprises: A mating end (22) for mating with a mating terminal of a mating connector; and A fixing portion (23) is connected between the welding end (21) and the mating end (22). The fixing portion (23) of the terminal (1) is fixed into the housing (1) to fix the terminal (1) to the housing (1).

10. The connector according to any one of claims 1 to 9, characterized in that: The terminals (2) include an upper row of terminals (2') and a lower row of terminals (2"), the welding ends (21) of the upper row of terminals (2') being used to be welded to the top surface of the circuit board (4), and the welding ends (21) of the lower row of terminals (2") being used to be welded to the bottom surface of the circuit board (4); and The pressing member (3) comprises an upper pressing member (3') and a lower pressing member (3"), wherein the upper pressing member (3') is used to press the welding ends (21) of the upper row terminals (2') onto the top surface of the circuit board (4), and the lower pressing member (3") is used to press the welding ends (21) of the lower row terminals (2") onto the bottom surface of the circuit board (4).

11. The connector according to claim 10, characterized in that: An upper mounting groove (10') is formed on the top of the housing (1), and the upper pressing member (3') is movably mounted in the upper mounting groove (10') of the housing (1) and is capable of moving between a pre-locking position and a final locking position; When the upper pressing piece (3') is in the pre-locking position, the welding ends (21) of the upper row terminals (2') are not pressed by the upper pressing piece (3'); When the upper pressing member (3') is in the final locking position, the upper pressing member (3') applies a predetermined pressing force (F) on the welding end (21) of the upper row of terminals (2').

12. The connector according to claim 11, characterized in that: Upper pre-locking buckles (31') are respectively formed on both ends of the upper pressing member (3'), and upper pre-locking slots (11') are respectively formed on the inner sides of the two end walls of the upper mounting slot (10') of the housing (1); When the upper pressing member (3') is in the pre-locking position, the upper pre-locking buckle (31') engages with the upper pre-locking slot (11') to keep the upper pressing member (3') in the pre-locking position.

13. The connector according to claim 11, characterized in that: A row of upper final locking buckles (32') is formed on the bottom surface of the upper pressing member (3'), and a row of upper final locking slots (12') is formed on the bottom wall of the upper mounting groove (10') of the housing (1); When the upper pressing member (3') is in the final locking position, the row of upper final locking buckles (32') engages with the row of upper final locking slots (12') to keep the upper pressing member (3') in the final locking position.

14. The connector according to claim 11, characterized in that: A row of upper positioning grooves (33') is formed on the bottom surface of the upper pressing member (3'), and a portion of the welding ends (21) of the upper row terminals (2') are respectively positioned in the row of upper positioning grooves (33'), and the bottom surfaces of the row of upper positioning grooves (33') are used to respectively press on the welding ends (21) of the upper row terminals (2') so as to apply a predetermined pressing force (F) on the welding ends (21) of the upper row terminals (2').

15. The connector according to claim 10, characterized in that: A lower mounting groove (10") is formed on the bottom of the housing (1), and the lower pressing member (3") is movably mounted in the lower mounting groove (10") of the housing (1) and is capable of moving between a pre-locking position and a final locking position; When the lower pressing member (3") is in the pre-locking position, the welding ends (21) of the lower row terminals (2") are not pressed by the lower pressing member (3"); When the lower pressing member (3") is in the final locking position, the lower pressing member (3") applies a predetermined pressing force (F) on the welding end (21) of the lower row of terminals (2").

16. The connector according to claim 15, characterized in that: Lower pre-locking buckles (31") are respectively formed on both ends of the lower pressing member (3"), and lower pre-locking slots (11") are respectively formed on the inner sides of the two end walls of the lower mounting slot (10") of the housing (1); When the lower pressing member (3") is in the pre-locking position, the lower pre-locking buckle (31") engages with the lower pre-locking slot (11") to keep the lower pressing member (3") in the pre-locking position.

17. The connector according to claim 15, characterized in that: A row of lower final locking buckles (32") is formed on the top surface of the lower pressing member (3"), and a row of lower final locking slots (12") is formed on the bottom wall of the lower mounting groove (10") of the housing (1); When the lower pressing member (3") is in the final locking position, the row of lower final locking buckles (32") engages with the row of lower final locking slots (12") to keep the lower pressing member (3") in the final locking position.

18. The connector according to claim 15, characterized in that: A row of lower positioning grooves (33") is formed on the top surface of the lower pressing member (3"), and a portion of the welding ends (21) of the lower row terminals (2") are respectively positioned in the row of lower positioning grooves (33"), and the bottom surfaces of the row of lower positioning grooves (33") are used to press on the welding ends (21) of the lower row terminals (2"), so as to apply a predetermined pressing force (F) on the welding ends (21) of the lower row terminals (2"), respectively.

19. A connector assembly, characterized in that: include: The connector according to any one of claims 1 to 18; and A circuit board (4), the welding end (21) of the terminal (2) of the connector being welded to the circuit board (4), When welding the welding end (21) of the terminal (2), the pressing member (3) presses the welding end (21) of the terminal (2) onto the circuit board (4) to prevent cold soldering.

20. The connector assembly according to claim 19, wherein: Also includes: A mating connector, mating with the connector, The mating end (22) of the terminal (2) of the connector is matingly connected to the mating terminal of the mating connector.

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