Electric connector and electric connector assembly

Abstract

The utility model relates to the technical field of electric connectors, and discloses an electric connector and an electric connector assembly, the electric connector comprises a housing, a first plugging cavity arranged in the housing and a connecting terminal arranged in the first plugging cavity, the housing is provided with a plugging port communicated with the first plugging cavity, and the first plugging cavity is communicated with the connecting terminal. The connection terminal comprises a plugging part plugged in the first plugging cavity, and the plugging part comprises a base part limited in the first plugging cavity, a first arm part connected with the base part, and a second arm part which is connected with the base part and is opposite to the first arm part. And first gaps are respectively formed between the first arm part and the cavity wall of the first insertion cavity and between the second arm part and the cavity wall of the first insertion cavity. The electric connector assembly comprises an electric connector and a butt joint electric connector which is in plugging cooperation with the electric connector. The butt joint electric connector comprises a butt joint shell, a second plugging cavity and a butt joint terminal, wherein the second plugging cavity and the butt joint terminal are arranged in the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector, especially relates to an electric connector and electric connector assembly. BACKGROUND

[0002] The electric connector is an electronic component for realizing electrical connection, is applied to various electric equipment, and is convenient for wiring, which plays a connecting bridge function between the blocked place in the circuit or the independent circuit that does not communicate, and undertakes the task of current or signal transmission, or cooperates with the beam terminal to form the board-to-wire connection, and can also be independently used for board-to-board connection.

[0003] The electric connector is mainly composed of an insulating shell and a connecting terminal, the insulating shell is provided with a plug-in slot, and the connecting terminal is at least partially arranged in the plug-in slot and is plugged with a mating electric connector. In the prior art, in order to stably arrange the connecting terminal in the plug-in slot, the connecting terminal is usually tightly attached or fixed to the cavity wall of the plug-in slot. Although this design can ensure the stability of the connecting terminal, it also brings some problems. Since the connecting terminal is directly fixed between the cavity wall of the plug-in slot, there is no avoiding gap between the two, so the assembly precision of the connecting terminal of the electric connector that is plugged with the electric connector is very high, otherwise interference may occur during plugging. SUMMARY

[0004] In view of the above problems of the prior art, the technical problem to be solved by the utility model is to provide an electric connector and an electric connector assembly, which can reduce the assembly tolerance of the connecting terminal of the mating electric connector.

[0005] To solve the above technical problems, one technical scheme of the utility model is to provide an electric connector, which comprises a shell, a first plug-in cavity arranged in the shell, and a connecting terminal arranged in the first plug-in cavity, the shell is formed with a plug-in port communicating with the first plug-in cavity, the connecting terminal comprises a plug-in part plugged into the first plug-in cavity, the plug-in part comprises a base part limited in the first plug-in cavity, a first arm part connected with the base part, and a second arm part connected with the base part and arranged opposite to the first arm part, and the first arm part and the second arm part are respectively formed with a first gap between the cavity wall of the first plug-in cavity.

[0006] Further, the cavity wall of the first plug-in cavity is provided with a limiting table for limiting the movement of the base part in the direction of the plug-in port, and the base part abuts against the limiting table; the connecting terminal further comprises a mounting end extending out of the first plug-in cavity in the direction away from the plug-in port, and the mounting end is welded on the circuit board.

[0007] Further, the first arm part and the second arm part each include a connecting arm connected with the base part and an elastic arm formed on the inner side of the connecting arm, the connecting arm and the cavity wall of the first plug-in cavity form the first gap, and the elastic arm is used to elastically contact the plug-in terminal of the plug-in electric connector.

[0008] Further, the base part is limited to one end of the first plug-in cavity away from the plug-in port, and one end of the connecting arm is connected with the base part, and the other end is inclined to the plug-in port and the opposite direction.

[0009] Further, the connecting arm has a window through along the thickness direction, and the connecting end of the elastic arm is connected to the side edge of the corresponding window, and the free end extends along the plug-in direction and the opposite direction.

[0010] Further, the connecting end of the elastic arm is connected to the side edge of the corresponding window close to the plug-in port, and the free end extends along the plug-in direction away from the plug-in port and the opposite direction.

[0011] Further, the free end of the elastic arm is configured as an arc structure arched to the opposite direction.

[0012] Further, the window and the connecting arm are integrally punched by a punching process.

[0013] To solve the above technical problems, another technical scheme adopted by the utility model is to provide an electric connector assembly, which comprises the electric connector described above and a plug-in matched plug-in electric connector, the plug-in electric connector comprises a plug-in housing, a second plug-in cavity arranged in the housing, and a plug-in terminal arranged in the second plug-in cavity, and the plug-in terminal is inserted into the first plug-in cavity from the plug-in port to contact the first arm part and the second arm part of the connecting terminal.

[0014] Further, the size of the plug-in port along the distribution direction of the first arm part and the second arm part is greater than the corresponding direction size of the plug-in terminal of the plug-in electric connector.

[0015] Based on the above embodiment, the electric connector and the electric connector assembly of the utility model, since the first arm part and the second arm part of the connecting terminal and the cavity wall between the first plug-in cavity each have the first gap, when the plug-in terminal is inserted, the first gap provides the first arm part and the second arm part with the elastic deformation avoiding space; in addition, since the size of the plug-in port is greater than the cross-sectional size of the plug-in terminal, the plug-in terminal forms the second gap with the inner wall surface when it is inserted into the plug-in port; in this way, even if the plug-in terminal is not assembled to the accurate position due to the assembly tolerance, it also does not affect the plug-in matching performance between them. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0017] Figure 1 is a structural schematic view of an embodiment of the electric connector assembly of the utility model.

[0018] Figure 2 is Figure 1 is a sectional view of A-A in the electric connector.

[0019] Figure 3 is Figure 1 is a split schematic view of the electric connector and the mating electric connector in the electric connector.

[0020] Figure 4 is a structural schematic view of the shell in an embodiment of the electric connector assembly of the utility model.

[0021] Figure 5 is Figure 3 is a sectional view of B-B in the electric connector.

[0022] Figure 6 is a structural schematic view of the connecting terminal in an embodiment of the electric connector assembly of the utility model.

[0023] The meanings of the reference signs in the drawings are as follows:

[0024] Electric connector 100; shell 110; guide block 111; first plug-in cavity 120; first half wall 12a; second half wall 12b; limiting table 121; limiting block 122; plug-in port 123; second gap 123a; stop block 1231; recess 1232; mounting port 124; connecting terminal 130; plug-in part 13a; mounting end 13b; base 131; main body 1311; side block 1312; matching groove 1313; matching block 1314; first arm part 132; connecting arm 1321; elastic arm 1322; window 1323; arch structure 1324; second arm part 133; first gap 134;

[0025] Mating electric connector 200; mating shell 210; guide groove 211; plug-in groove 212; second plug-in cavity 220; mating terminal 230; plug-in section 231; mating matching end 232; mounting end 233. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings.

[0027] Please refer to Figures 1 to 6 In this paper, in combination with Figures 1 to 6The structure shown is used to exemplarily describe the electric connector assembly of the utility model, so as to more clearly show the various components and cooperation relationship of the electric connector assembly. It should be understood that, although the electric connector assembly shown in the following figures is described in detail as an example, this example is not used as a limitation of the scope of the electric connector assembly of the utility model, and the remaining components can be regarded as non-essential technical elements except for the components necessary to solve the technical problems of the utility model. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements can be omitted in other embodiments.

[0028] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the electric connector assembly of the utility model. Figure 1 The electric connector assembly shown includes an electric connector 100 and a mating electric connector 200 which is plugged with the electric connector 100. The electric connector 100 and the mating electric connector 200 can be configured as a linear electric connector 100, that is, the mating end (the end which is plugged with the mating electric connector 200) and the mounting end (the end which is welded with a circuit board) of the electric connector 100 are configured as two opposite ends which are distributed along the plugging direction. The mating end 232 (the end which is plugged with the electric connector 100) and the mounting end (the end which is welded with a circuit board) of the mating electric connector 200 are also two opposite ends which are distributed along the plugging direction. The electric connector 100 and the mating electric connector 200 can also be configured as a vertical electric connector 100, that is, the mating end and the mounting end of the electric connector 100 are oriented towards two mutually perpendicular directions, and the mating end 232 and the mounting end of the mating electric connector 200 are also oriented towards two mutually perpendicular directions. The electric connector 100 and the mating electric connector 200 can also be configured such that one of the electric connectors 100 is a linear electric connector 100 and the other is a vertical electric connector 100.

[0029] Please refer to Figure 2 and Figure 3 The electric connector 100 includes a housing 110, a connecting terminal 130 which is arranged in the housing 110 and arranged in the first plugging cavity 120. At least one side outer wall surface of the housing 110 is provided with at least one guide part, which can be configured as a guide block 111 which is protruded on the outer wall surface of the housing 110 or a guide groove which is recessed on the outer wall surface.

[0030] Please refer to Figure 4The at least one side wall of the first plug-in cavity 120 (in this embodiment, one side wall) is provided with a limiting platform 121 for limiting the movement of the connecting terminal 130 in the direction of the mating electrical connector 200. In this embodiment, the side wall of the first plug-in cavity 120 (may also be a plurality of side walls) is configured to have a first half wall 12a closer to the center direction of the first plug-in cavity 120 and a second half wall 12b farther away from the center direction in the transverse direction of the first plug-in cavity 120 (perpendicular to the plug-in direction), the first half wall 12a is close to the mating end direction, and the second half wall 12b is close to the mounting end direction, so that an end surface of the first half wall 12a in the direction of the mounting end forms the limiting platform 121. The limiting platform 121 can also have other configurations, such as a protruding rib or block directly protruding from the wall of the first plug-in cavity 120. Preferably, the limiting platform 121 is further provided with a limiting block 122, the size of the limiting block 122 in the direction perpendicular to the plug-in direction is smaller than the corresponding size of the limiting platform 121, and the limiting block 122 is directed towards the mounting end direction.

[0031] The housing 110 is formed with a plug-in port 123 coaxially communicating with the first plug-in cavity 120 at one end directed towards the mating electrical connector 200, and is further provided with a mounting port 124 coaxially communicating with the first plug-in cavity 120 at an end away from the plug-in port 123. The size (cross-sectional size or caliber) of the plug-in port 123 in the direction perpendicular to the plug-in direction is smaller than the cross-sectional size of the first plug-in cavity 120, and the cross-sectional size of the plug-in port 123 is larger than the cross-sectional size of the mating terminal 230 of the electrical connector 200. When the mating terminal 230 is inserted into the plug-in port 123, at least one side surface of the mating terminal 230 and the inner edge of the plug-in port 123 form a second gap 123a (see Figure 2 ). The two opposite sides of the plug-in port 123 are further provided with stop blocks 1231 extending from the inner edge of the plug-in port 123 towards the mounting port 124, and the stop blocks 1231, the end wall of the first plug-in cavity 120 directed towards the mating electrical connector 200, and the side wall thereof enclose a groove 1232 with an opening directed towards the mounting port 124.

[0032] Please refer to Figure 5 and Figure 6The connecting terminal 130 includes a plug-in portion 13a plugged into the first plug-in cavity 120 and a mounting end 13b extending out of the shell 110 from the mounting port 124, the mounting end 13b being perpendicularly connected with the plug-in portion 13a and being welded on a circuit board. The plug-in portion 13a includes a base portion 131 limited in the first plug-in cavity 120, a first arm portion 132 connected with the base portion 131, and a second arm portion 133 connected with the base portion 131 and oppositely arranged with the first arm portion 132, the first arm portion 132 and the second arm portion 133 respectively forming a first gap 134 with the cavity wall of the first plug-in cavity 120, and one end of the first arm portion 132 and the second arm portion 133 respectively located in the two grooves 1232.

[0033] The base portion 131 is limited in the first plug-in cavity 120 away from one end of the plug-in port 123. Specifically, the base portion 131 abuts against the limiting table 121, the base portion 131 being a C-shaped structure having a main body 1311 capable of being limited in the limiting table 121 and abutting against the second half wall 12b and side blocks 1312 bent and formed at two ends of the main body 1311. The main body 1311 is formed with a matching groove 1313 matching with the concave-convex portion thereof at a position corresponding to the limiting block 122, and the matching groove 1313 is formed with matching blocks 1314 abutting against the limiting table 121 on both sides. The matching groove 1313 and the limiting block 122 are concave-convex matched to limit the connecting terminal 130 in the transverse direction (a direction perpendicular to the plug-in direction) of the connecting terminal 130, preventing the connecting terminal 130 from moving transversely. The two side blocks 1312 respectively abut against the corresponding cavity walls of the first plug-in cavity 120, and the two side blocks 1312 are respectively connected with or integrally formed with the first arm portion 132 and the second arm portion 133. The first arm portion 132 and the second arm portion 133 are both inclined from the corresponding side blocks 1312 to the plug-in port 123 and to the center of the first plug-in cavity 120, so that the first arm portion 132 and the second arm portion 133 form the first gap 134 with the corresponding cavity walls.

[0034] The first arm portion 132 and the second arm portion 133 each include a connecting arm 1321 connected with the base portion 131 and an elastic arm 1322 formed on the inner side of the connecting arm 1321. One end of the two connecting arms 1321 is connected with the base portion 131, and the other end is inclined to the plug-in port 123 and to the opposite direction, and the two connecting arms 1321 each form the first gap 134 with the cavity wall of the first plug-in cavity 120, and the elastic arm 1322 is used for elastically contacting the connecting terminal 230 of the counter connector 200.

[0035] The elastic arms 1322 can be integrally formed with the connecting arms 1321 or fixedly connected with the connecting arms 1321. In the shown embodiment, both the connecting arms 1321 have a window 1323 penetrating through the thickness direction thereof, and the connecting ends of both the elastic arms 1322 are connected to one side edge of the corresponding window 1323, and the free ends extend in the insertion direction and in the opposite direction. The window 1323 and the connecting arm 1321 thereof are integrally formed by stamping process. Further, the connecting ends of both the elastic arms 1322 are connected to one side edge of the corresponding window 1323 close to the insertion port 123, and the free ends extend in the insertion direction and in the opposite direction of the mounting port 124. The free end of each elastic arm 1322 is configured as an arc structure 1324 arching in the opposite direction.

[0036] Please continue to see Figure 2 and Figure 3 The mating electrical connector 200 includes a mating housing 210, a second insertion cavity 220 arranged in the housing 110, and a mating terminal 230 arranged in the second insertion cavity 220. The mating terminal 230 is inserted into the first insertion cavity 120 from the insertion port 123 to contact the elastic arms 1322 of the first arm 132 and the elastic arms 1322 of the second arm 133 of the connecting terminal 130.

[0037] The mating housing 210 is provided with a guide matching part corresponding to the guide part at the position of the guide part, which is configured as a guide groove 211 or a guide block. The mating housing 210 is provided with an insertion groove 212 at one end thereof facing the housing 110 of the electrical connector 100 for covering the outer periphery of the mating end (the end facing the mating electrical connector 200) of the housing 110. The second insertion cavity 220 penetrates through the insertion groove 212 and the mating housing 210 away from the electrical connector 100 in the insertion direction. The mating terminal 230 has an insertion section 231 inserted into the second insertion cavity 220, a mating mating end 232 connected with the insertion section 231 and extending into the first insertion cavity, and a mounting end 233 connected with the insertion section 231 and located outside the mating housing 210 away from the electrical connector 100, which is used for welding with the corresponding circuit board.

[0038] Based on the above-mentioned embodiments, the electric connector 100 and the electric connector assembly have the first gap 134 between the first arm portion 132 and the second arm portion 133 and the cavity wall between the first plug cavity 120, which provides the first arm portion 132 and the second arm portion 133 with an elastic deformation space when the mating terminal 230 is inserted; in addition, the size of the plug opening 123 is greater than the cross-sectional size of the mating terminal 230, so that the mating terminal 230 forms a second gap with the inner wall surface when it is inserted into the plug opening 123; in this way, even if the mating terminal 230 is not assembled to the accurate position due to the assembly tolerance, it does not affect the plug-in fitting performance between them.

Claims

1. An electrical connector comprising a housing, a first mating cavity provided in the housing, and a connection terminal provided in the first mating cavity, a mating opening communicating with the first mating cavity being formed in the housing, characterized in that: The connecting terminal comprises a plug-in part plugged into the first plug-in cavity, the plug-in part comprises a base part limited in the first plug-in cavity, a first arm part connected with the base part, and a second arm part connected with the base part and oppositely arranged with the first arm part, and the first arm part and the second arm part are respectively formed with a first gap between the cavity wall of the first plug-in cavity.

2. The electrical connector of claim 1, wherein: The cavity wall of the first plug-in cavity is provided with a limiting platform for limiting the movement of the base part in the direction of the plug-in port, and the base part abuts against the limiting platform; the connecting terminal further comprises a mounting end extending out of the first plug-in cavity in a direction away from the plug-in port, and the mounting end is welded on the circuit board.

3. The electrical connector of claim 1, wherein: The first arm part and the second arm part each comprise a connecting arm connected with the base part and an elastic arm formed on the inner side of the connecting arm, the connecting arm is formed with the first gap between the cavity wall of the first plug-in cavity, and the elastic arm is used for elastically contacting the mating terminal of the mating electrical connector.

4. The electrical connector of claim 3, wherein: The base part is limited in one end of the first plug-in cavity away from the plug-in port thereof, and one end of each of the two connecting arms is connected with the base part, and the other end is inclined in the direction of the plug-in port and in the opposite direction.

5. The electrical connector of claim 3, wherein: Each of the two connecting arms has a window penetrating along the thickness direction thereof, and the connecting end of each of the two elastic arms is connected to one side edge of the corresponding window, and the free end extends in the plug-in direction and in the opposite direction.

6. The electrical connector of claim 5, wherein: The connecting end of each of the two elastic arms is connected to one side edge of the corresponding window close to the plug-in port, and the free end extends in the plug-in direction away from the plug-in port and in the opposite direction.

7. An electrical connector as claimed in claim 5 or 6, wherein: The free end of each of the two elastic arms is configured as an arch structure arching in the opposite direction.

8. The electrical connector of claim 5, wherein: The window and the connecting arm thereof are integrally stamped by a stamping process.

9. An electrical connector assembly characterized by, The electrical connector comprises a mating electrical connector mated with the electrical connector, the mating electrical connector comprises a mating housing, a second plug-in cavity arranged in the housing, and a mating terminal arranged in the second plug-in cavity, and the mating terminal is inserted into the first plug-in cavity from the plug-in port to contact the first arm part and the second arm part of the connecting terminal.

10. The electrical connector assembly of claim 9, wherein: The size of the plug-in port in the distribution direction of the first arm part and the second arm part is greater than the size of the corresponding direction of the mating terminal of the mating electrical connector.

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