A floating board-to-board connector and its female socket

Abstract

The present invention discloses a floating board-to-board connector and a female socket thereof, wherein the female socket of the floating board-to-board connector comprises a base and a signal terminal, the base is provided with a movable groove with two ends open, and a limit groove is provided on the side wall of the movable groove. The signal terminal comprises a contact section and a fixed section connected to the contact section, the fixed section comprises a solder foot portion and a limit portion connected to the solder foot portion, the solder foot portion is used for soldering and connecting with a circuit board, the limit portion is arranged in the limit groove, the limit portion has a pressure shoulder close to the solder foot portion, the surface of the pressure shoulder close to the solder foot portion is lower than the surface of the limit groove close to the notch of the solder foot portion. The female socket of the floating board-to-board connector of the present invention solves the technical problem of low yield rate of existing floating board-to-board connectors.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a floating board-to-board connector and a female socket thereof. Background Art

[0002] The floating board-to-board connector is used to connect two circuit boards. It generally includes a male socket and a female socket (also called a male connector and a female connector) that are plugged into each other. The female socket is provided with a floating mechanism, which can eliminate the misalignment of the circuit boards during the assembly process and reduce the force between the connector and the circuit board when plugged into the male socket. It is widely used for electrical connections in vibration environments.

[0003] The manufacturing process of the signal terminal is generally to first punch out a plurality of signal terminals through sheet metal stamping, then bend them, and then assemble the signal terminals into the limit grooves. When assembling the signal terminals on the base, in order to facilitate the installation of the signal terminals and prevent the signal terminals from falling apart, the signal terminals will not be completely stamped out during stamping, and there will be connecting materials between the shoulders of the multiple signal terminals. After the signal terminals are assembled to the base, the connecting materials will be torn off. In the related art, the surface of the shoulder surface is flush with the surface of the limit groove. After the connecting materials are torn off, burrs or debris will remain on the shoulder, and they will be scattered on the end faces of the shoulder and the limit groove, and will cause overlapping contact, which will cause a short circuit between the signal terminals or inaccurate signal transmission, causing the signal terminal to transmit the signal incorrectly, resulting in a low yield rate in connector production. Summary of the invention

[0004] The main purpose of the present invention is to provide a female socket of a floating board-to-board connector, aiming to solve the technical problem of low yield rate in the existing floating board-to-board connector.

[0005] To achieve the above object, the female socket of the floating board-to-board connector proposed by the present invention comprises:

[0006] The base is provided with a movable groove with two ends open, and the side wall of the movable groove is provided with a limiting groove;

[0007] A signal terminal, wherein the signal terminal comprises a contact section and a fixed section connected to the contact section, wherein the fixed section comprises a solder foot portion and a limiting portion connected to the solder foot portion, wherein the solder foot portion is used for soldering and connecting to a circuit board, wherein the limiting portion is arranged in the limiting groove, wherein the limiting portion has a pressure shoulder close to the solder foot portion, wherein a surface of the pressure shoulder close to the solder foot portion is lower than a surface of the limiting groove close to a notch of the solder foot portion.

[0008] Optionally, the pressure shoulder includes a first pressure shoulder portion and a second pressure shoulder portion respectively located on both sides of the welding foot portion.

[0009] Optionally, a distance between a surface of the pressure shoulder close to the weld foot portion and a surface of the limiting groove close to the notch of the weld foot portion is greater than or equal to 0.05 mm and less than or equal to 0.3 mm.

[0010] Optionally, a plurality of the limiting grooves are provided, and the plurality of limiting grooves are spaced apart on the side wall of the movable groove.

[0011] Optionally, the limiting groove is arranged to be tapered from a side close to the welding foot portion toward a direction away from the welding foot portion.

[0012] Optionally, an opening communicating with the limiting groove is further provided on the side wall of the base, and the opening is used for allowing the signal terminal to pass through.

[0013] Optionally, the limiting groove is provided with a limiting structure, and the limiting structure is used to prevent the signal terminal from escaping from the limiting groove.

[0014] Optionally, the limiting structure includes a first limiting portion and a second limiting portion located on both sides of the limiting groove.

[0015] Optionally, the female socket of the floating board-to-board connector further comprises a movable socket, the movable socket is movably disposed in the movable groove, and the movable socket is provided with a receiving groove for receiving the contact segment.

[0016] The present invention also proposes a floating board-to-board connector, the floating board-to-board connector includes a male seat and a female seat, the female seat of the floating board-to-board connector includes a base and a signal terminal, the base is provided with a movable groove with two ends open, and a limit groove is provided on the side wall of the movable groove. The signal terminal includes a contact section and a fixed section connected to the contact section, the fixed section includes a solder foot and a limit part connected to the solder foot, the solder foot is used to be soldered to a circuit board, the limit part is arranged in the limit groove, the limit part has a pressure shoulder close to the solder foot, and the surface of the pressure shoulder close to the solder foot is lower than the surface of the limit groove close to the notch of the solder foot.

[0017] The female socket of the floating board-to-board connector of the present invention comprises a base and a signal terminal, wherein the base is provided with an active groove with two ends open, and a limit groove is provided on the side wall of the active groove. The signal terminal comprises a contact section and a fixed section connected to the contact section, wherein the fixed section comprises a solder leg and a limit portion connected to the solder leg, wherein the solder leg is used for soldering and connecting with a circuit board, and the limit portion is arranged in the limit groove, wherein the limit portion has a pressure shoulder close to the solder leg, and the surface of the pressure shoulder close to the solder leg is lower than the surface of the limit groove close to the solder leg; thus, the surface of the pressure shoulder close to the solder leg is separated by a certain distance from the surface of the limit groove close to the solder leg, so that the burrs and debris remaining on the pressure shoulder after the connecting material is pulled off cannot be overlapped together, thereby avoiding short circuits between signal terminals, avoiding signal transmission errors, and improving the yield rate of the female socket of the floating board-to-board connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a floating board-to-board connector of the present invention;

[0020] Figure 2 for Figure 1 A cross-sectional view of a floating board-to-board connector;

[0021] Figure 3 for Figure 2 A cross-sectional view of the female socket of the floating board-to-board connector;

[0022] Figure 4 for Figure 3 Axonometric view of the female socket of the floating board-to-board connector;

[0023] Figure 5 for Figure 4 An enlarged view of the female connector A of the floating board-to-board connector;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure of the limit slot of the floating board-to-board connector;

[0025] Figure 7 for Figure 5 Detailed view of the female connector of the floating board-to-board connector;

[0026] Figure 8 1 is a schematic diagram of the structure of the signal terminal in the female socket of the floating board-to-board connector;

[0027] Fig. 9 for Figure 8 Schematic diagram of the partial structure of the signal terminal.

[0028] Description of Figure Numbers:

[0029]

[0030]

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The invention provides a floating board-to-board connector and a female socket thereof.

[0035] In the embodiment of the present invention, Figures 1 to 3The female socket 100 of the floating board-to-board connector includes a base 110 and a signal terminal 130. The base 110 is provided with an active groove with two ends open, and a limiting groove 111 is provided on the side wall of the active groove. The signal terminal 130 includes a contact section 131 and a fixed section 132 connected to the contact section 131, and the fixed section 132 includes a solder leg portion 132b and a limiting portion 132a connected to the solder leg portion 132b, and the solder leg portion 132b is used for soldering and connecting with the circuit board, and the limiting portion 132a is arranged in the limiting groove 111, and the limiting portion 132a has a pressing shoulder 134 close to the solder leg portion 132b, and the surface of the pressing shoulder 134 close to the solder leg portion 132b is lower than the surface of the limiting groove 111 where the notch of the solder leg portion 132b is located.

[0036] Specifically, the floating board-to-board connector mainly includes a male seat 200 and a female seat 100 (also referred to as a male end connector and a female end connector), the male seat 200 and the female seat 100 are respectively installed on different circuit boards, and both the male seat 200 and the female seat 100 have signal terminals 130 for transmitting signals, and are respectively electrically connected to different circuit boards. The male seat 200 is provided with a plug-in end, and the female seat 100 is provided with a plug-in slot 121. The signal terminal 130 is respectively installed in the plug-in end and the plug-in slot 121, and then through the plug-in fit of the plug-in end and the plug-in slot 121, the signal terminal 130 of the male seat 200 and the female seat 100 is connected to realize the electrical connection between the two connected circuit boards. Of course, it is also possible to set the plug-in slot 121 on the male seat 200 and the plug-in end on the female seat 100, so as to realize the plug-in fit of the male seat 200 and the female seat 100, and the specific setting method can be set according to the actual situation.

[0037] In addition, in the floating board-to-board connector, a floating structure is provided in the female socket 100, so that the two circuit boards can move relative to each other while maintaining electrical connection, thereby eliminating the misalignment of the circuit boards during the assembly process and reducing the force between the connector and the circuit boards.

[0038] The signal terminals 130 of the male socket 200 and the female socket 100 are generally made of elastic metal sheets, metal strips, etc. One end of the signal terminal 130 is used to electrically connect to a solder joint, an interface, etc. on a circuit board, and the other end is provided with a contact section 131, see Figure 2 The contact section 131 can contact the signal terminal 130 on the other connection socket (referring to the male socket 200 or the female socket 100) when the male socket 200 and the female socket 100 are plugged in, thereby realizing the conduction of the signal in the entire floating board-to-board connector.

[0039] In this embodiment, the signal terminal 130 installed on the female base 100 (hereinafter referred to as the female base 100) of the floating board-to-board connector is used for conducting electricity and also has a floating mechanism for constituting the female base 100. Specifically, the female base 100 mainly includes a base 110, a movable base 120 and a signal terminal 130. The outer shape of the base 110 is roughly a rectangular parallelepiped structure. Of course, its outer shape can also be other shapes, such as a cube, a cylinder, etc., which are not specifically limited here. The base 110 is provided with a movable groove inside. In this embodiment, the movable groove passes through the base 110 along the height direction of the base 110, that is, the upper and lower ends of the movable groove are open. The physical shape of the base 110 is roughly annular, and the space enclosed by the annular physical part is the movable groove. Such a setting facilitates the installation of the movable base 120 and the signal terminal 130, and improves the assembly efficiency.

[0040] When the female base 100 is mounted on the circuit board, the base 110 is fixedly connected to the circuit board. Figure 1 As shown, both ends of the base 110 in the length direction are provided with connecting parts, and the base 110 is fixedly connected to the circuit board through the connecting parts. In other embodiments, in order to facilitate the positioning of the base 110 on the circuit board, the bottom surface of the base 110 is also provided with positioning columns, and the circuit board is correspondingly provided with positioning holes. During installation, the positioning of the base 110 is achieved by inserting the positioning columns into the positioning holes, and then the base 110 is fixedly connected to the circuit board through the connecting parts.

[0041] The movable seat 120 is movably arranged in the movable groove, and is provided with a plug-in groove 121 for plugging with the male seat 200. The plug-in groove 121 is provided with a mounting portion 122, and the contact section 131 of the signal terminal 130 is mounted on the mounting portion 122. It should be noted that when the movable seat 120 is movably arranged in the movable groove, the entire movable seat 120 can be located in the movable groove to make the structure of the entire female seat 100 more compact. It is also possible that the lower half of the movable seat 120 is located in the movable groove, and the upper half extends out of the movable groove, so that the plug-in process between the female seat 100 and the male seat 200 is easy to observe, thereby improving the convenience and accuracy of the plug-in between the male seat 200 and the female seat 100.

[0042] The shape of the movable seat 120 is generally adapted to the base 110 and the movable groove. For example, in this embodiment, the movable seat 120 and the base 110 are both rectangular parallelepiped structures, and the movable seat 120 extends along the length direction of the base 110. It can be understood that the rectangular movable seat 120 and the base 110 can be installed with more signal terminals 130 in the length direction, thereby improving the conductive performance of the connector.

[0043] Please combine Figure 2 and Figure 3, the contact section 131 and the fixed section 132 of the signal terminal 130 are connected by a connecting section 133. The connecting section 133 of the signal terminal 130 is roughly U-shaped and is located between the inner wall of the base 110 and the outer wall of the movable seat 120. Specifically, in this embodiment. When the movable seat 120 moves relative to the base 110, the connecting section 133 will be elastically deformed, so that the movable seat 120 can move relative to the base 110, that is, the connecting section 133 of the signal terminal 130 is an important component to realize the movable seat 120.

[0044] The base 110 is provided with a limiting groove 111 for fixing the signal terminal 130. Generally, there are multiple limiting grooves 111, and the multiple limiting grooves 111 are arranged at intervals on the side wall of the movable groove. The fixed section 132 of the signal terminal 130 includes a limiting portion 132a and a solder foot portion 132b. The solder foot portion 132b is used for soldering with the circuit board. The fixed section 132 is installed in the limiting groove 111, so as to connect the signal terminal 130 with the base 110. It should be pointed out that the limiting portion 132a of the signal terminal 130 generally includes a plurality of protrusions, and the plurality of protrusions make the limiting portion 132a and the limiting groove 111 interference-connected, so that the limiting portion 132a and the limiting groove 111 are firmly connected together.

[0045] It should be noted that the production and assembly process of the signal terminal 130 of the mother socket 100 is roughly as follows: the signal terminal 130 is formed by sheet metal stamping and bending, and then the signal terminal 130 is assembled with the mother socket 100 from one side of the mother socket 100, that is, the contact section 131 is inserted into the plug-in slot 121, and the fixed section 132 is inserted into the limit slot 111. A shoulder 134 is provided on the side of the limit portion 132a close to the welding foot portion 132b. During the assembly of the signal terminal 130, the shoulder 134 is abutted by a process equipment adapted to the shoulder 134 so that the signal terminal 130 is inserted into the base 110. It should be pointed out that the shoulder 134 can be located on one side of the welding foot segment, or on both sides of the welding foot segment, which is not specifically limited here.

[0046] It is understandable that when assembling the signal terminals 130, due to the large number of signal terminals 130, the procedure of installing the signal terminals 130 individually on the female base 100 is relatively cumbersome, and it is difficult to ensure the consistency of the installation position of each signal terminal 130. Therefore, when stamping the sheet metal, the signal terminals 130 are generally not completely stamped down, but there is a connecting material between the pressure shoulders 134 of adjacent signal terminals 130, so that the two signal terminals 130 are still a connected whole. When assembling the signal terminals 130, the signal terminals 130 are inserted into the base 110 as a whole. After being installed in place, the connecting material between the pressure shoulders 134 is torn off manually or by a robot, thereby disconnecting the connection between the signal terminals 130.

[0047] However, after the connecting material is torn off, a large number of burrs, debris, etc. will be generated on the shoulder 134 due to tearing. These burrs or debris may overlap on the surface of the limit groove 111 close to the solder leg 132b, causing the adjacent signal terminals 130 to short-circuit, resulting in signal transmission errors. In order to avoid this situation, the surface of the shoulder 134 close to the solder leg 132b is lower than the surface of the notch of the limit groove 111 close to the solder leg 132b; in this way, the shoulders 134 of two adjacent signal terminals 130 can be spaced apart, thereby avoiding the overlapping of burrs and debris, and effectively avoiding the short circuit between adjacent signal terminals 130. Thereby, the yield rate of the mother seat 100 production is improved.

[0048] The female socket 100 of the floating board-to-board connector of the present invention includes a base 110 and a signal terminal 130. The base 110 is provided with an active groove with two ends open, and a limiting groove 111 is provided on the side wall of the active groove. The signal terminal 130 includes a contact section 131 and a fixed section 132 connected to the contact section 131. The fixed section 132 includes a solder leg 132b and a limiting portion 132a connected to the solder leg 132b. The solder leg 132b is used for soldering to a circuit board. The limiting portion 132a is provided in the limiting groove 111. The limiting portion 132a has a pressure shoulder 134 close to the solder leg 132b. The pressure shoulder 134 is close to the surface of the solder leg 132b. The surface of the notch of the limiting groove 111 close to the solder leg 132b is lower than that of the limiting groove 111; in this way, the surface of the pressing shoulder 134 close to the solder leg 132b is separated from the surface of the limiting groove 111 close to the solder leg 132b by a certain distance, so that the burrs and debris remaining on the pressing shoulder 134 after the connecting material is torn off cannot be overlapped together, thereby avoiding a short circuit between the signal terminals 130, avoiding signal transmission errors, and improving the production yield of the floating board-to-board connector female socket 100.

[0049] See also Figure 5 and Figure 6In one embodiment, the shoulder 134 includes a first shoulder 134a and a second shoulder 134b, and the first shoulder 134a and the second shoulder 134b are respectively located on both sides of the solder foot 132b. By providing the shoulders 134 located on both sides of the solder foot 132b, the force received by the shoulders 134 is more uniform and balanced during the assembly of the signal terminal 130, so that the signal terminal 130 can be accurately inserted into the base 110. The signal terminal 130 is prevented from being inserted crookedly, thereby improving the yield rate of the mother socket 100.

[0050] In one embodiment, the distance between the surface of the pressing shoulder 134 close to the welding foot portion 132 b and the surface of the limiting groove 111 close to the notch of the welding foot portion 132 b is greater than or equal to 0.05 mm and less than or equal to 0.3 mm.

[0051] Specifically, if the distance between the surface of the shoulder 134 close to the solder leg 132b and the surface of the limiting groove 111 close to the notch of the solder leg 132b is less than 0.05 mm, it will not be able to isolate the debris and burrs after the connecting material is torn off, and a short circuit may still occur between adjacent signal terminals 130, resulting in inaccurate signal transmission. If the distance between the surface of the shoulder 134 close to the solder leg 132b and the surface of the limiting groove 111 close to the notch of the solder leg 132b is greater than 0.3 mm, it may cause the process equipment for assembling the signal terminal 130 to be longer, resulting in insufficient rigidity, and then it will be impossible to install the signal terminal 130 to the corresponding position on the mother seat 100.

[0052] See also Figure 2 , Figure 7 and Figure 8 In one embodiment, a plurality of the limiting grooves 111 are provided, and the plurality of limiting grooves 111 are spaced apart on the side wall of the movable groove.

[0053] Furthermore, the limiting grooves 111 are generally arranged at intervals along the length direction of the base 110, and the female base 100 includes a plurality of signal terminals 130, and the fixing sections 132 of the plurality of signal terminals 130 are respectively located in the limiting grooves. It is worth mentioning that the female base 100 also includes a movable base 120, and the movable base 120 is provided with a plug-in groove 121, and a mounting portion 122 is provided in the plug-in groove 121, and the contact sections 131 of the signal terminals 130 are arranged at intervals along the length direction of the mounting portion 122.

[0054] See also Figure 6 and Figure 8 In one embodiment, the limiting groove 111 is gradually tapered from a side close to the welding foot portion 132b toward a direction away from the welding foot portion 132b.

[0055] It should be noted that, during the assembly process of the signal terminal 130, the signal terminal 130 is inserted into the base 110 from the surface of the limiting groove 111 close to the solder leg portion 132b. Since the limiting groove 111 is relatively small in size and a plurality of signal terminals 130 are generally provided, the limiting groove 111 is gradually set from the surface close to the solder leg portion 132b toward the pressing shoulder 134. In this way, the signal terminal 130 can be guided during the assembly process of the signal terminal 130, thereby facilitating the assembly of the signal terminal 130 and the base 110.

[0056] In one embodiment, an opening 111 c communicating with the limiting groove 111 is further formed on the side wall of the base 110 , and the opening 111 c is used for allowing the signal terminal 130 to pass through.

[0057] It should be noted that the signal terminal 130 includes a contact section 131, a fixed section 132, and a connecting section 133 connecting the fixed section 132 and the contact section 131. During the installation of the signal terminal 130, a position for the connecting section 133 to pass through needs to be reserved on the side wall of the base 110. By providing an opening 111c on the side wall of the base 110 that is connected to the limiting groove 111, when the fixed section 132 of the signal terminal 130 is inserted into the limiting groove 111, the opening 111c can allow the connecting section 133 of the signal terminal 130 to pass through, thereby facilitating the assembly of the signal terminal 130 and the base 110.

[0058] See also Figure 5 and Figure 6 In one embodiment, the limiting groove 111 is provided with a limiting structure, and the limiting structure is used to prevent the signal terminal 130 from escaping from the limiting groove 111.

[0059] Specifically, during the use of the female socket 100, the movable socket 120 in the female socket 100 will float due to the misalignment between the circuit boards, so the signal terminal 130 will be subjected to a large force. By setting a limiting structure, the signal terminal 130 can be effectively prevented from falling out of the limiting groove 111, thereby increasing the reliability of the use of the female socket 100.

[0060] On the basis of the previous embodiment, the limiting structure includes a first limiting portion 111 a and a second limiting portion 111 b located on both sides of the limiting groove 111 .

[0061] Furthermore, the limiting structure is a first limiting portion 111a and a second limiting portion 111b arranged on both sides of the limiting groove 111. The first limiting portion 111a and the second limiting portion 111b can effectively limit the signal terminal 130 in the limiting groove 111 so that it cannot escape, and two limiting portions 132a are set to limit both sides of the signal terminal 130, so that the force on the signal terminal 130 is more uniform, thereby increasing the reliability of the female socket 100 when in use.

[0062] See also Figure 3 In one embodiment, the female socket 100 of the floating board-to-board connector further includes a movable seat 120 , which is movably disposed in the movable groove, and the movable seat 120 is provided with a receiving groove 122 a for receiving the contact segment 131 .

[0063] Specifically, the movable seat 120 is provided with a plug-in slot 121 for plugging with the male seat 200, and the plug-in slot 121 is provided with a mounting portion 122 for mounting the signal terminal 130, and the mounting portion 122 is provided with a receiving slot 122a for receiving the contact segment 131 of the signal terminal 130. It is worth mentioning that the receiving slots 122a are arranged in a row at intervals on the side of the mounting portion 122, and the receiving slots 122a are arranged in a row on both sides of the mounting portion 122 and are symmetrically arranged. The contact segments 131 of the signal terminal 130 are respectively arranged in the receiving slots 122a.

[0064] The present invention further proposes a floating board-to-board connector, which includes a male socket 200 and a female socket 100. The specific structure of the female socket 100 refers to the above embodiment. Since the floating board-to-board connector adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A female socket of a floating board-to-board connector, characterized in that: include: The base is provided with a movable groove with two ends open, and the side wall of the movable groove is provided with a limiting groove; A signal terminal, wherein the signal terminal comprises a contact section and a fixed section connected to the contact section, wherein the fixed section comprises a solder foot portion and a limiting portion connected to the solder foot portion, wherein the solder foot portion is used for soldering and connecting to a circuit board, wherein the limiting portion is arranged in the limiting groove, wherein the limiting portion has a pressure shoulder close to the solder foot portion, wherein a surface of the pressure shoulder close to the solder foot portion is lower than a surface of the limiting groove close to a notch of the solder foot portion.

2. The female socket of the floating board-to-board connector according to claim 1, characterized in that: The pressing shoulder includes a first pressing shoulder portion and a second pressing shoulder portion respectively located at two sides of the welding foot portion.

3. The female socket of the floating board-to-board connector according to claim 1, characterized in that: The distance between the surface of the pressure shoulder close to the welding foot and the surface of the limiting groove close to the notch of the welding foot is greater than or equal to 0.05 mm and less than or equal to 0.3 mm.

4. The female socket of the floating board-to-board connector according to claim 1, characterized in that: A plurality of the limiting grooves are provided, and the plurality of limiting grooves are arranged at intervals on the side wall of the movable groove.

5. The female socket of the floating board-to-board connector according to claim 1, characterized in that: The limiting groove is gradually arranged from a side close to the welding foot portion toward a direction away from the welding foot portion.

6. The female socket of the floating board-to-board connector according to claim 1, characterized in that: An opening communicating with the limiting groove is also provided on the side wall of the base, and the opening is used for the signal terminal to pass through.

7. The female socket of the floating board-to-board connector according to claim 6, characterized in that: The limiting groove is provided with a limiting structure, and the limiting structure is used to prevent the signal terminal from escaping from the limiting groove.

8. The female socket of the floating board-to-board connector according to claim 7, characterized in that: The limiting structure includes a first limiting portion and a second limiting portion located on both sides of the limiting groove.

9. The female socket of the floating board-to-board connector according to claim 1, characterized in that: The female socket of the floating board-to-board connector further comprises a movable socket, which is movably disposed in the movable groove, and a receiving groove for receiving the contact section is disposed on the movable socket.

10. A floating board-to-board connector, characterized in that: include: A male socket, having a plug-in end; as well as, The female socket of the floating board-to-board connector according to any one of claims 1 to 9, wherein the female socket is provided with a plug-in slot, and the plug-in end is plug-matched with the plug-in slot.

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