A wire-to-board connector

Abstract

The application belongs to the technical field of connectors, and particularly relates to a wire-to-board connector. The wire-to-board connector comprises a shell, a terminal assembly and a terminal locking assembly. The terminal assembly comprises a first terminal arranged in an upper accommodating cavity and a second terminal arranged in a lower accommodating cavity. The terminal locking assembly comprises a first terminal locking piece and a second terminal locking piece. The first terminal locking piece is used for limiting the movement of the first terminal in the front-rear direction. The second terminal locking piece is used for limiting the movement of the second terminal in the front-rear direction. The first terminal locking piece and / or the second terminal locking piece has first outer side faces and second outer side faces alternately arranged in the length direction on the side opposite to the shell. The first outer side faces and the second outer side faces are at different height positions. The application effectively improves the deformation problem after injection molding by alternately arranging the first outer side faces and the second outer side faces at different height positions on the first terminal locking piece and / or the second terminal locking piece, and reduces the assembly difficulty.

Description

A wire-to-board connector Technical Field

[0001] This application belongs to the field of connector technology, specifically relating to a wire-to-board connector. Background Technology

[0002] Wire-to-board connectors are used to transmit current and / or signals. They have a female terminal for connecting to cables or ribbon cables and a male terminal for mounting on a circuit board. Due to their flexible assembly, good transmission performance, and easy installation, wire-to-board connectors are widely used in electronic office equipment, power systems, and industrial automation systems.

[0003] The wire-to-board connector uses a TPA (terminal locking assembly) structure to assist in locking the terminal positions, ensuring that the terminals are fully seated inside the connector housing. To remove the terminals from the connector housing, the TPA must be removed first.

[0004] In the prior art, the TPA structure of the wire-to-board connector is prone to deformation and warping after injection molding, which makes it difficult to assemble with the connector shell and greatly affects assembly efficiency. Summary of the Invention

[0005] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a wire-to-board connector, which effectively improves the problem of deformation after injection molding, reduces assembly difficulty, and improves assembly efficiency by alternately setting a first outer side and a second outer side at different height positions on a first terminal locking member and / or a second terminal locking member.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A wire-to-board connector, comprising:

[0008] The housing has an upper receiving cavity and a lower receiving cavity. The front part of the housing has an opening groove between the upper receiving cavity and the lower receiving cavity, and the opening groove communicates with the upper receiving cavity and the lower receiving cavity.

[0009] The terminal assembly includes a first terminal disposed in the upper receiving cavity and a second terminal disposed in the lower receiving cavity, wherein both the first terminal and the second terminal are provided with a pressing portion extending into the opening groove;

[0010] The terminal locking assembly includes a first terminal locking member mounted on the top of the housing and a second terminal locking member mounted on the bottom of the housing. The first terminal locking member is used to restrict the first terminal from moving in the front-back direction, and the second terminal locking member is used to restrict the second terminal from moving in the front-back direction. The first terminal locking member and / or the second terminal locking member have a first outer side and a second outer side arranged alternately along the length direction on the side opposite to the housing. The first outer side and the second outer side are at different height positions.

[0011] In conjunction with the above implementation methods, in some implementation methods of this application, the housing is provided with first snap-fit ​​portions on the left and right sides of the first terminal locking member, and the first terminal locking member is provided with first protrusions on the left and right sides, and the first snap-fit ​​portions abut against the top of the first protrusions and / or the outer side extending in the front-back direction.

[0012] The housing has second latching portions on the left and right sides of the second terminal locking member, and second protrusions on the left and right sides of the second terminal locking member. The second latching portions abut against the bottom of the second protrusions and / or the outer side extending in the front-back direction.

[0013] In some implementations of this application, in conjunction with the above-described implementations, both the first terminal and the second terminal have a connecting body, the pressing part is connected to the connecting body, the top and bottom of the housing are provided with first connecting holes, the upper receiving cavity is connected to the first connecting hole located at the top, the lower receiving cavity is connected to the first connecting hole located at the bottom, the connecting body is provided with a first notch at a position corresponding to the first connecting hole, and a first baffle is provided in front of the first notch, both the first terminal locking member and the second terminal locking member are provided with a first limiting part that extends through the first connecting hole and into the first notch, and the front end of the first limiting part abuts against the first baffle.

[0014] In some implementations of this application, in conjunction with the above implementations, both the first terminal and the second terminal include signal terminals. The housing has power terminal receiving cavities on the left and right sides of the signal terminals and a second communicating hole at the top of the power terminal receiving cavity. The front part of the power terminal receiving cavity communicates with the opening slot. The housing has a power terminal inside the power terminal receiving cavity. The power terminal has a second notch at a position corresponding to the second communicating hole and a second baffle in front of the second notch. The first terminal locking member has a second limiting part that extends through the second communicating hole and into the second notch. The front end of the second limiting part abuts against the second baffle.

[0015] In conjunction with the above implementation methods, in some implementation methods of this application, the top and bottom of the housing are provided with abutment grooves, the first terminal locking member and the second terminal locking member are each provided with a first buckle extending into the abutment groove on the side near the housing, and the top inner side of the abutment groove is provided with a protruding edge, and the first buckle is engaged with the protruding edge.

[0016] In some implementations of this application, in conjunction with the above implementations, the first outer surface is a plane or a curved surface, the second outer surface is a plane or a curved surface, and the first outer surface and the second outer surface are connected by a transition surface.

[0017] In some implementations of this application, in conjunction with the above-described implementations, the housing is provided with a first mounting portion and a second mounting portion extending forward and spaced apart in the vertical direction. The front portion of the upper receiving cavity passes through the first mounting portion, and the front portion of the lower receiving cavity passes through the second mounting portion. An opening groove is formed between the first mounting portion and the second mounting portion. The first mounting portion and the second mounting portion are provided with mounting grooves corresponding to each other in the vertical direction. The housing is provided with a second buckle in the mounting groove. The second buckle extends from the mounting groove of the first mounting portion to the mounting groove of the second mounting portion. The second buckle includes a buckle body and a buckle seat disposed at the bottom of the buckle body. The buckle seat is provided with inclined top surfaces on the left and right sides of the buckle body. The inclined top surfaces are inclined from front to back and upward. The rear end of the inclined top surface is higher than the top surface of the second mounting portion.

[0018] In conjunction with the above implementation methods, some implementation methods of this application further include a snap-locking component. The housing is provided with two second snaps spaced apart in the left-right direction. The tops of the two second snaps are connected by a connecting seat. The connecting seat is located above the first mounting part. The snap-locking component is disposed between the connecting seat and the first mounting part and is engaged with the first mounting part in the front-back direction. The rear part of the snap-locking component is provided with a locking seat. The locking seat has a limiting surface for abutting against the bottom of the connecting seat to restrict the downward movement of the second snaps.

[0019] In some implementations of this application, in conjunction with the above-described implementations, a circuit board is also included, which is used to be mounted in the opening slot to abut against the pressing portion of the first terminal and the second terminal.

[0020] In conjunction with the above implementation methods, in some implementation methods of this application, the circuit board is provided with a snap-fit ​​groove on the side near the housing. The snap-fit ​​groove includes a guide groove and a reset groove that are connected. The guide groove is located in front of the reset groove and is used to allow the snap-fit ​​body to pass through and enter the reset groove. The projection of the reset groove in the vertical direction completely covers the projection of the card holder in the vertical direction, so that the card holder can be reset upward after the snap-fit ​​body enters the reset groove. The projection of the guide groove in the front-back direction partially covers the projection of the card holder in the front-back direction.

[0021] One of the above technical solutions has at least one of the following advantages or beneficial effects: This application provides a first outer surface and a second outer surface on the side of the first terminal locking member and / or the second terminal locking member facing away from the housing. The first and second outer surfaces are alternately arranged along the length of the terminal locking member and are at different heights, ensuring that the first and second outer surfaces do not form a continuous plane, thus forming a rack-like or rack-like structure. This structure can disperse stress, avoid concentrated and unidirectional forces during injection molding, and reduce local deformation. Simultaneously, it helps improve the structural rigidity of the first and second terminal locking members, helping to resist internal stress generated during injection molding and cooling, thereby effectively improving the problem of deformation of the first and second terminal locking members after injection molding, alleviating the difficulty of assembly with the housing caused by their deformation, reducing operational difficulty, and improving assembly efficiency. Attached Figure Description

[0022] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0023] Figure 1 is a schematic diagram of a circuit board mounted on a wire-to-board connector according to an embodiment of this application;

[0024] Figure 2 is an exploded view of one embodiment shown in Figure 1;

[0025] Figure 3 is an exploded view of the housing and circuit board according to an embodiment of this application;

[0026] Figure 4 is a top view of the housing according to an embodiment of this application;

[0027] Figure 5 is a cross-sectional view at point AA in Figure 4;

[0028] Figure 6 is a schematic diagram of the connection between the first terminal locking member and the second terminal locking member respectively abutting against the first terminal and the second terminal according to an embodiment of this application;

[0029] Figure 7 is a schematic diagram of the connection between the first terminal locking member and the power terminal according to an embodiment of this application;

[0030] Figure 8 is an enlarged view of point A in Figure 2;

[0031] Figure 9 is an enlarged view of point B in Figure 3. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0033] In this application, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this application, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.

[0034] In this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this application, the terms "first" and "second" are used only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0035] In this application, unless otherwise explicitly defined, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to direct connection or indirect connection through an intermediate medium; they can refer to fixed connection, detachable connection, or integral molding; they can refer to mechanical connection, electrical connection, or connection capable of mutual communication; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.

[0036] Referring to Figures 1 to 3, 6, 8, and 9, embodiments of this application provide a wire-to-board connector, including a housing 1, a terminal assembly 2, and a terminal locking assembly. The housing 1 has an upper receiving cavity 11 and a lower receiving cavity 12. An opening groove 13 is provided at the front of the housing 1 between the upper receiving cavity 11 and the lower receiving cavity 12, and the opening groove 13 communicates with the upper receiving cavity 11 and the lower receiving cavity 12.

[0037] Terminal assembly 2 includes a first terminal 21 disposed in the upper receiving cavity 11 and a second terminal 22 disposed in the lower receiving cavity 12. Both the first terminal 21 and the second terminal 22 are provided with pressing parts 23 extending into the opening slot 13. The pressing parts 23 are used to mate with the circuit board 3 to realize the electrical connection of signal or power. It is understood that the number of upper receiving cavities 11 and lower receiving cavities 12 can be reasonably set according to the actual number of terminals, and there is no limitation here.

[0038] The terminal locking assembly includes a first terminal locking member 41 mounted on the top of the housing 1 and a second terminal locking member 42 mounted on the bottom of the housing 1. The first terminal locking member 41 is used to restrict the movement of the first terminal 21 in the front-back direction, and the second terminal locking member 42 is used to restrict the movement of the second terminal 22 in the front-back direction. It can be understood that the first terminal locking member 41 is used to at least restrict the rearward movement of the first terminal 21, and the second terminal locking member 42 is used to at least restrict the rearward movement of the second terminal 22.

[0039] Referring to Figures 4 and 5, the first terminal locking member 41 and / or the second terminal locking member 42 have alternating first outer surface 431 and second outer surface 432 along their length on the side facing away from the housing 1. The first outer surface 431 and the second outer surface 432 are at different heights, ensuring that the first outer surface 431 and the second outer surface 432 do not form a continuous plane, thus forming a rack-like or rack-like structure. This structure can disperse stress, avoid concentrated and unidirectional forces during the injection molding process, and reduce local deformation. At the same time, it helps to improve the structural rigidity of the first terminal locking member 41 and the second terminal locking member 42, which helps to resist the internal stress generated during injection molding and cooling, thereby effectively improving the problem of deformation of the first terminal locking member 41 and the second terminal locking member 42 after injection molding, improving the problem of difficulty in assembling with the housing 1 due to their deformation, reducing operational difficulty, and improving assembly efficiency.

[0040] Furthermore, referring to Figure 5, the first outer surface 431 is a plane or a curved surface, and the second outer surface 432 is a plane or a curved surface. The first outer surface 431 and the second outer surface 432 are connected by a transition surface 433. In other words, both the first outer surface 431 and the second outer surface 432 are either planes or curved surfaces, which helps to reduce injection molding deformation. At the same time, planes and curved surfaces are also easy to process and produce, which helps to reduce production costs.

[0041] Further, referring to Figures 1 to 5, the housing 1 has a first snap-fit ​​portion 141 on the left and right sides of the first terminal locking member 41, and a first protrusion 411 on the left and right sides of the first terminal locking member 41. The first snap-fit ​​portion 141 abuts against the top of the first protrusion 411 and / or the outer side extending in the front-back direction, which plays a role in positioning and installation, and helps to restrict the first terminal locking member 41 from moving upward or in the left-right direction.

[0042] The housing 1 has second latching portions 142 on the left and right sides of the second terminal locking member 42, and second protrusions 421 on the left and right sides of the second terminal locking member 42. The second latching portions 142 abut against the bottom of the second protrusions 421 and / or the outer side extending in the front-back direction, which serves to position and install the second terminal locking member 42, thereby restricting the second terminal locking member 42 from moving downward or in the left-right direction.

[0043] Further, referring to Figures 2, 5, 6 and 8, both the first terminal 21 and the second terminal 22 have a connecting body 241, and the pressing part 23 is connected to the connecting body 241. The top and bottom of the housing 1 are provided with first connecting holes 15, the upper receiving cavity 11 is connected to the first connecting hole 15 located at the top, and the lower receiving cavity 12 is connected to the first connecting hole 15 located at the bottom.

[0044] The connecting body 241 has a first notch 242 at a position corresponding to the first connecting hole 15, and a first baffle 243 is provided in front of the first notch 242. The first terminal locking member 41 and the second terminal locking member 42 both have a first limiting part 434 that passes through the first connecting hole 15 and extends into the first notch 242. The front end of the first limiting part 434 abuts against the first baffle 243. The first limiting part 434 of the first terminal locking member 41 limits the first baffle 243 of the first terminal 21, thereby restricting the first terminal 21 from moving backward. The first limiting part 434 of the second terminal locking member 42 limits the first baffle 243 of the second terminal 22, thereby restricting the second terminal 22 from moving backward. This ensures that when the housing 1 is snapped onto the circuit board 3, the first terminal 21 and the second terminal 22 do not move, thereby ensuring the stability of current and / or signal input and output.

[0045] Furthermore, referring to Figures 2, 5, 7 and 8, both the first terminal 21 and the second terminal 22 include signal terminals. The housing 1 has power terminal receiving cavities 16 on the left and right sides of the signal terminals, and a second connecting hole 17 is provided on the top of the power terminal receiving cavity 16.

[0046] The housing 1 has a power terminal 25 inside the power terminal receiving cavity 16. The front part of the power terminal receiving cavity 16 is connected to the opening groove 13, so that the pressing part 23 of the power terminal 25 for abutting against the circuit board 3 can extend into the opening groove 13 to realize electrical connection.

[0047] The power terminal 25 has a second notch 251 at a position corresponding to the second connecting hole 17, and a second baffle 252 is provided in front of the second notch 251. The first terminal locking member 41 has a second limiting part 412 that passes through the second connecting hole 17 and extends into the second notch 251, and the front end of the second limiting part 412 abuts against the second baffle 252. By limiting the second baffle 252 of the power terminal 25 through the second limiting part 412 of the first terminal locking member 41, the power terminal 25 is restricted from moving backward, ensuring that the power terminal 25 does not shift when the housing 1 is snapped onto the circuit board 3, thereby ensuring the stability of current input and output.

[0048] Furthermore, referring to Figures 2, 4, and 5, the top and bottom of the housing 1 are provided with abutment grooves 18. The first terminal locking member 41 and the second terminal locking member 42 are each provided with a first buckle 435 extending into the abutment groove 18 on the side near the housing 1. The inner side of the top of the abutment groove 18 is provided with a protruding edge 181. The first buckle 435 is engaged with the protruding edge 181, which restricts the first terminal locking member 41 from falling out upward and the second terminal locking member 42 from falling out downward. This helps to enhance the stability of the connection between the first terminal locking member 41 and the second terminal locking member 42 and the housing 1, thereby ensuring the stability of the connection between the signal terminal and the power terminal 25 and the circuit board 3, and effectively ensuring that the signal and current can be stably input and output.

[0049] Further, referring to Figures 1, 3 and 9, the housing 1 is provided with a first mounting portion 191 and a second mounting portion 192 that extend forward and are spaced apart in the vertical direction. The front part of the upper receiving cavity 11 passes through the first mounting portion 191, and the front part of the lower receiving cavity 12 passes through the second mounting portion 192. An opening groove 13 is formed between the first mounting portion 191 and the second mounting portion 192.

[0050] The first mounting portion 191 and the second mounting portion 192 are provided with mounting grooves 193 corresponding to each other in the vertical direction. The housing 1 is provided with a second buckle 194 in the mounting groove 193. The second buckle 194 extends from the mounting groove 193 of the first mounting portion 191 to the mounting groove 193 of the second mounting portion 192. The second buckle 194 includes a buckle body 1941 and a buckle seat 1942 provided at the bottom of the buckle body 1941. The buckle seat 1942 is provided with inclined top surfaces 1943 on the left and right sides of the buckle body 1941. The inclined top surfaces 1943 are inclined from front to back and upward to guide the circuit board 3 to move along the inclined top surfaces 1943 towards the housing 1, that is, backward.

[0051] Referring to Figure 9, when the wire-to-board connector is inserted into the circuit board 3, before the bottom of the circuit board 3 reaches the rear end of the inclined top surface 1943, the bottom of the circuit board 3 abuts against the inclined top surface 1943 and presses the retainer 1942 downward. The inclined top surface 1943 guides the circuit board 3 to move backward. At the same time, the latch body 1941 passes through the guide groove 31 of the circuit board 3 and moves towards the reset groove 32. When the circuit board 3 moves backward to the position where its bottom is disengaged from the rear end of the inclined top surface 1943, the retainer 1942 can fully enter the reset groove 32 of the circuit board 3 and reset to achieve upward movement. In its natural state, the rear end of the inclined top surface 1943 is higher than the top surface of the second mounting part 192. When the retainer 1942 resets, the circuit board 3 and the retainer 1942 coincide in the height direction, thereby restricting the movement of the circuit board 3 relative to the wire-to-board connector in the front-back direction, preventing separation between the two, and ensuring the stability of current and signal input and output.

[0052] Furthermore, referring to Figures 1 to 3, the wire-to-board connector also includes a latching locking element 5. The housing 1 has two second latches 194 spaced apart along the left-right direction. The tops of the two second latches 194 are connected by a connecting seat 195, which is located above the first mounting portion 191. When the circuit board 3 needs to be removed from the wire-to-board connector, the connecting seat 195 needs to be pressed, causing the second latches 194 to move downwards. The top of the latch 1942, i.e., the rear end of the inclined top surface 1943, is lower than the top surface of the second mounting portion 192, thus preventing interference with the forward and backward movement of the circuit board 3 and facilitating operation.

[0053] A latching locking member 5 is disposed between the connecting seat 195 and the first mounting part 191, and engages with the first mounting part 191 in the front-to-back direction to ensure that the latching locking member 5 is stably connected to the housing 1. A locking seat 51 is provided at the rear of the latching locking member 5. The locking seat 51 has a limiting surface 511 for abutting against the bottom of the connecting seat 195 to restrict the downward movement of the connecting seat 195, thereby restricting the downward movement of the second latch 194. The latching locking member 5 locks the second latch 194, preventing it from springing back up or down, thus ensuring that the circuit board 3 is stably connected to the wire-to-board connector. When it is necessary to remove the circuit board 3, simply remove the latching locking member 5 and press the connecting seat 195, facilitating the disassembly and assembly of the circuit board 3.

[0054] Furthermore, referring to Figures 1 to 3, the wire-to-board connector also includes a circuit board 3, which is mounted in the opening slot 13 to abut against the pressing portion 23 of the first terminal 21 and the second terminal 22 to realize the input and output of power and signals.

[0055] Referring to Figures 3 and 9, in some embodiments, the circuit board 3 has a latching groove 33 on the side near the housing 1. The latching groove 33 includes a connecting guide groove 31 and a reset groove 32. The guide groove 31 is located in front of the reset groove 32 and is used to allow the latching body 1941 to pass through and enter the reset groove 32. The projection of the reset groove 32 in the vertical direction is not less than the projection of the latch 1942 in the vertical direction. In other words, the projection of the reset groove 32 in the vertical direction completely covers the projection of the latch 1942 in the vertical direction, so that the latch 1942 can be reset upward after the latching body 1941 enters the reset groove 32. The projection of the guide groove 31 in the front-back direction is less than the projection of the latch 1942 in the front-back direction. That is, the projection of the guide groove 31 in the front-back direction partially covers the projection of the latch 1942 in the front-back direction. In other words, the minimum width of the guide groove 31 in the left-right direction is less than the minimum width of the latch 1942 in the left-right direction. When the card holder 1942 enters the reset slot 32, the card holder 1942 cannot pass through the guide slot 31 and come out, thereby restricting the circuit board 3 from moving forward and effectively preventing the circuit board 3 from coming out of the wire-to-board connector.

[0056] Referring to Figures 1 and 2, in some embodiments, the wire-to-board connector also includes a rear cover 6, which is detachably mounted on the rear of the housing 1 to shield the upper receiving cavity 11 and the lower receiving cavity 12 from the front-to-back direction, thereby protecting the terminals.

[0057] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A wire-to-board connector, characterized in that, The device includes: a housing having an upper receiving cavity and a lower receiving cavity, wherein the front portion of the housing has an opening groove between the upper and lower receiving cavities, the opening groove communicating with the upper and lower receiving cavities; a terminal assembly including a first terminal in the upper receiving cavity and a second terminal in the lower receiving cavity, both the first and second terminals having pressing portions extending into the opening groove; and a terminal locking assembly including a first terminal locking member mounted on the top of the housing and a second terminal locking member mounted on the bottom of the housing, the first terminal locking member restricting the first terminal from moving in the front-back direction, the second terminal locking member restricting the second terminal from moving in the front-back direction, the first terminal locking member and / or the second terminal locking member having a first outer side and a second outer side arranged alternately along the length direction on the side opposite to the housing, the first outer side and the second outer side being at different height positions; and the housing having first engaging portions on the left and right sides of the first terminal locking member, the first terminal... The locking member has first protrusions on its left and right sides, and the first snap-fit ​​portion abuts against the top of the first protrusion and / or the outer side extending in the front-back direction; the housing has second snap-fit ​​portions on the left and right sides of the second terminal locking member, and second protrusions on the left and right sides of the second terminal locking member, with the second snap-fit ​​portion abutting against the bottom of the second protrusion and / or the outer side extending in the front-back direction; both the first terminal and the second terminal have connecting bodies, the pressing portion is connected to the connecting body, the top and bottom of the housing have first connecting holes, the upper receiving cavity is connected to the first connecting hole located at the top, the lower receiving cavity is connected to the first connecting hole located at the bottom, the connecting body has a first notch at a position corresponding to the first connecting hole, and a first baffle is provided in front of the first notch, both the first terminal locking member and the second terminal locking member have a first limiting portion that extends into the first notch after passing through the first connecting hole, and the front end of the first limiting portion abuts against the first baffle.

2. The wire-to-board connector according to claim 1, characterized in that, Both the first terminal and the second terminal include signal terminals. The housing has power terminal receiving cavities on the left and right sides of the signal terminals and a second connecting hole on the top of the power terminal receiving cavity. The front part of the power terminal receiving cavity communicates with the opening slot. The housing has a power terminal inside the power terminal receiving cavity. The power terminal has a second notch at a position corresponding to the second connecting hole and a second baffle in front of the second notch. The first terminal locking member has a second limiting part that extends through the second connecting hole and into the second notch. The front end of the second limiting part abuts against the second baffle.

3. The wire-to-board connector according to claim 1, characterized in that, The top and bottom of the housing are provided with abutment grooves. The first terminal locking member and the second terminal locking member are each provided with a first buckle that extends into the abutment groove on the side near the housing. The top inner side of the abutment groove is provided with a protruding edge, and the first buckle is engaged with the protruding edge.

4. The wire-to-board connector according to claim 1, characterized in that, The first outer surface is a plane or a curved surface, and the second outer surface is a plane or a curved surface. The first outer surface and the second outer surface are connected by a transition surface.

5. The wire-to-board connector according to claim 1, characterized in that, The housing has a first mounting portion and a second mounting portion extending forward and spaced apart in the vertical direction. The front part of the upper receiving cavity passes through the first mounting portion, and the front part of the lower receiving cavity passes through the second mounting portion. An opening groove is formed between the first mounting portion and the second mounting portion. The first mounting portion and the second mounting portion are provided with mounting grooves corresponding to each other in the vertical direction. The housing has a second buckle in the mounting groove. The second buckle extends from the mounting groove of the first mounting portion to the mounting groove of the second mounting portion. The second buckle includes a buckle body and a buckle seat provided at the bottom of the buckle body. The buckle seat has inclined top surfaces on the left and right sides of the buckle body. The inclined top surfaces are inclined from front to back and upward. The rear end of the inclined top surface is higher than the top surface of the second mounting portion.

6. The wire-to-board connector according to claim 5, characterized in that, It also includes a snap-locking component. The housing has two second snaps spaced apart in the left-right direction. The tops of the two second snaps are connected by a connecting seat. The connecting seat is located above the first mounting part. The snap-locking component is located between the connecting seat and the first mounting part and engages with the first mounting part in the front-back direction. The rear part of the snap-locking component has a locking seat. The locking seat has a limiting surface for abutting against the bottom of the connecting seat to restrict the downward movement of the second snaps.

7. The wire-to-board connector according to claim 5, characterized in that, It also includes a circuit board for mounting in the opening slot to abut against the pressing portion of the first terminal and the second terminal.

8. The wire-to-board connector according to claim 7, characterized in that, The circuit board has a snap-fit ​​groove on the side near the housing. The snap-fit ​​groove includes a guide groove and a reset groove that are connected to each other. The guide groove is located in front of the reset groove and is used to allow the snap-fit ​​body to pass through and enter the reset groove. The projection of the reset groove in the vertical direction completely covers the projection of the snap-fit ​​base in the vertical direction, so that the snap-fit ​​body can be reset upward after entering the reset groove. The projection of the guide groove in the front-back direction partially covers the projection of the snap-fit ​​base in the front-back direction.

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