Board-to-board electric connector combination and male and female end combined type electric connector thereof

Abstract

The invention discloses a male and female end combined type electric connector which comprises an insulation structure, a plurality of first male end terminals and a plurality of first female end terminals. The insulation structure comprises an insulation structure body, a first male end butt joint part and a first female end butt joint part, and the first male end butt joint part and the first female end butt joint part are configured to form structures which can be matched and butted with each other. A plurality of first male end terminals are arranged on the first male end butt joint part, a plurality of first female end terminals are arranged on the first female end butt joint part, and the first male end butt joint part and the first female end butt joint part form a symmetrical structure relative to a first axis and form an asymmetrical structure relative to a second axis on the insulation structure body. The first axis and the second axis are orthogonal to each other, and the first male end butt joint part and the first female end butt joint part are parallel along the first axis.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and particularly to a male-female composite electrical connector with an integrated male end structure and female end structure, and an electrical connector combination formed by docking two male-female composite electrical connectors. Background Art

[0002] Electrical connectors are commonly used in the electrical connection structures of electronic devices and are used to transmit electronic signals between electronic devices. Since electrical connectors are used for connecting between two electronic devices or electronic modules, electrical connectors can be divided into male electrical connectors and female electrical connectors. The structures of male electrical connectors and female electrical connectors are generally configured in complementary shapes to facilitate docking with each other.

[0003] Existing male electrical connectors and female electrical connectors have different structures due to their complementary configurations. Therefore, two sets of molds must be made respectively for manufacturing male electrical connectors and female electrical connectors, which considerably increases the manufacturing cost and also increases the cost of component quality management. In addition, since male electrical connectors and female electrical connectors are made with two sets of molds, there may be a relatively large tolerance when the male electrical connector and the female electrical connector are docked due to the manufacturing tolerances of the molds. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a board-to-board electrical connector combination and its male-female composite electrical connector, which solve the problem of increased manufacturing cost caused by the need to separately manufacture male electrical connectors and female electrical connectors with two sets of molds in the prior art.

[0005] The present invention provides a male-female composite electrical connector, which includes an insulating structure, a plurality of first male terminals, and a plurality of first female terminals. The insulating structure includes an insulating structure body, a first male docking portion, and a first female docking portion. The insulating structure body has a bearing surface. The first male docking portion and the first female docking portion are disposed on the bearing surface of the insulating structure body. The configurations of the first male docking portion and the first female docking portion form a structure that can be cooperatively docked with each other. The plurality of first male terminals are disposed on the male docking portion and fixed to the bearing surface. Each of the first male terminals includes a first male contact portion, a first male fixing portion, and a first male welding portion. The plurality of first female terminals are disposed on the female docking portion and fixed to the bearing surface. Each of the first female terminals includes a first female contact portion, a first female fixing portion, and a first female welding portion. The insulating structure is disposed on a circuit board. The plurality of first male terminals are electrically connected to the circuit board, and the plurality of first female terminals are electrically connected to the circuit board. The first male docking portion and the first female docking portion form a symmetric structure with respect to a first axis and an asymmetric structure with respect to a second axis on the insulating structure body. The first axis and the second axis are orthogonal to each other. The first male docking portion and the first female docking portion are arranged side by side along the first axis.

[0006] In another embodiment, the first male docking portion and the first female docking portion are adjacently disposed.

[0007] In another embodiment, the first male docking portion includes two first side walls. The two first side walls are oppositely disposed on the bearing surface on both sides of the first axis, and a first docking space is formed between the two first side walls. The plurality of first male terminals are arranged in at least one row in the first docking space. The first male contact portion of each first male terminal extends from the bearing surface to the first docking space.

[0008] In another embodiment, the first female docking portion includes a first boss and a plurality of first docking grooves. The first boss is disposed on the bearing surface. The plurality of first docking grooves are formed in the first boss and open at the top end of the first boss. The plurality of first docking grooves are arranged in at least one row. The plurality of first female terminals are respectively disposed corresponding to the plurality of first docking grooves. The first female contact portion of each first female terminal extends from the bearing surface into the first docking groove. The first boss has two first side surfaces that are oppositely disposed on both sides of the first axis.

[0009] In another embodiment, the two first side surfaces are respectively aligned with the inner surfaces of the first side walls. A clamping rib is provided on the inner surface of each first side wall. Each first side surface has a clamping groove, and the clamping rib corresponds to the clamping groove.

[0010] In another embodiment, it further includes a plurality of second male terminal ends and a plurality of second female terminal ends. Each of the second male terminal ends includes a second male contact portion, a second male fixing portion, and a second male welding portion, and the plurality of second male terminal ends are electrically connected to the circuit board. Each of the second female terminal ends includes a second female contact portion, a second female fixing portion, and a second female welding portion, and the plurality of second female terminal ends are electrically connected to the circuit board. The insulating structure further includes a second male docking portion and a second female docking portion. The second male docking portion and the second female docking portion are disposed on the bearing surface of the insulating structure body. The configurations of the second male docking portion and the second female docking portion form a structure that can be cooperatively docked with each other. The plurality of second male terminal ends are disposed on the second male docking portion, and the plurality of second female terminal ends are disposed on the second female docking portion. The second male docking portion and the second female docking portion form a symmetric structure with respect to the first axis and an asymmetric structure with respect to the second axis in the insulating structure body.

[0011] In another embodiment, the second male docking portion is adjacent to the first female docking portion, and the second female docking portion is adjacent to the first male docking portion.

[0012] In another embodiment, the second male docking portion includes two second side walls. The two second side walls are oppositely disposed on the bearing surface on both sides of the first axis, and a second docking space is formed between the two second side walls. The plurality of second male terminal ends are arranged in at least one row in the second docking space, and the second male contact portion of each second male terminal end extends from the bearing surface to the second docking space.

[0013] In another embodiment, the second female docking portion includes a second boss and a plurality of second docking grooves. The second boss is disposed on the bearing surface. The plurality of second docking grooves are formed in the second boss and open at the top of the second boss. The plurality of second docking grooves are arranged in at least one row. The plurality of second female terminal ends are respectively disposed corresponding to the plurality of second docking grooves. The second female contact portion of each second female terminal end extends from the bearing surface into the second docking groove. The second boss has two second side surfaces oppositely disposed on both sides of the first axis. The two second side surfaces are respectively aligned with the inner surfaces of the second side walls. Each second side wall is provided with a clamping spring arm. Each clamping spring arm has a clamping protrusion. Each first side surface has a clamping recess. The clamping protrusion corresponds to the clamping recess.

[0014] The present invention provides a board-to-board electrical connector combination, which includes two male-female composite electrical connectors, and each male-female composite electrical connector forms an electrical connection with a circuit board. The first male docking portion of the insulating structure of one male-female composite electrical connector docks with the first female docking portion of the insulating structure of the other male-female composite electrical connector, and the first female docking portion of the insulating structure of one male-female composite electrical connector docks with the first male docking portion of the insulating structure of the other male-female composite electrical connector. The plurality of first male terminal pins of one male-female composite electrical connector dock with the plurality of first female terminal pins of the other male-female composite electrical connector, and the plurality of first female terminal pins of one male-female composite electrical connector dock with the plurality of first male terminal pins of the other male-female composite electrical connector.

[0015] In the male-female composite electrical connector of the present invention, the male docking portion and the female docking portion are integrated into one insulating structure, and the configurations of the male docking portion and the female docking portion can allow docking with an exactly same male-female composite electrical connector in an opposite direction plugging manner. The formed electrical connector combination can be applied to the electrical connection between circuit boards. By appropriately designing the shape of the insulating structure of the male-female composite electrical connector of the present invention, a board-to-board electrical connector combination can be formed by two male-female composite electrical connectors with the same structure, and only one set of molds needs to be made, thus saving the manufacturing cost and also reducing the cost of component quality management. In addition, since only one set of molds is used to manufacture the male-female composite electrical connector, the tolerance during docking can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of an embodiment of the board-to-board electrical connector combination of the present invention.

[0017] Figure 2 is a front view of the two male-female composite electrical connectors of the board-to-board electrical connector combination of the present invention respectively combined with the circuit boards.

[0018] Figure 3 is Figure 2 a front view after the two male-female composite electrical connectors are docked.

[0019] Figure 4 is a perspective view of the up-and-down configuration of the two male-female composite electrical connectors of an embodiment of the present invention.

[0020] Figure 5 is Figure 4 a perspective view of another angle of

[0021] Figure 6 is an exploded perspective view of the male-female composite electrical connector of an embodiment of the present invention.

[0022] Figure 7 is Figure 6 exploded perspective view of another perspective.

[0023] Figure 8 is the bottom view of the male-female terminal composite electrical connector according to an embodiment of the present invention.

[0024] Figure 9 is Figure 8 a cross-sectional view taken along line A-A.

[0025] Description of reference numerals: 1 - male-female terminal composite electrical connector; 10 - insulating structure; 11 - insulating structure body; 12 - first male terminal docking portion; 13 - first female terminal docking portion; 14 - second male terminal docking portion; 15 - second female terminal docking portion; 20 - first male terminal; 20a - first male contact portion; 20b - first male fixing portion; 20c - first male welding portion; 30 - first female terminal; 30a - first female contact portion; 30b - first female fixing portion; 30c - first female welding portion; 40 - second male terminal; 40a - second male contact portion; 40b - second male fixing portion; 40c - second male welding portion; 50 - second female terminal; 50a - second female contact portion; 50b - second female fixing portion; 50c - second female welding portion; 111 - bearing surface; 121 - first side wall; 122 - engaging rib; 131 - first boss; 132 - first docking groove; 133 - engaging groove; 141 - second side wall; 142 - third side wall; 151 - second boss; 152 - second docking groove; 1311 - first side; 1411 - engaging spring arm; 1412 - engaging protrusion; 1511 - second side; 1512 - engaging recess; A - board-to-board electrical connector assembly; L1 - first axis; L2 - second axis; P - circuit board; S1 - first docking space; S2 - second docking space. Detailed Description of the Invention

[0026] Please refer to Figure 1 、 Figure 2 and Figure 3 , which shows an embodiment of the board-to-board electrical connector assembly of the present invention. The board-to-board electrical connector assembly A of this embodiment includes two male-female terminal composite electrical connectors 1. Each male-female terminal composite electrical connector 1 is welded to a circuit board P, and the circuit boards P are electrically connected to transmit electronic signals through the docking of the two male-female terminal composite electrical connectors 1 with each other.

[0027] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7, which represents an embodiment of the male-female composite electrical connector of the present invention. The male-female composite electrical connector 1 of this embodiment includes an insulating structure 10, a plurality of first male terminal ends 20, a plurality of first female terminal ends 30, a plurality of second male terminal ends 40, and a plurality of second female terminal ends 50.

[0028] The insulating structure 10 includes an insulating structure body 11, a first male terminal docking portion 12, a first female terminal docking portion 13, a second male terminal docking portion 14, and a second female terminal docking portion 15. The insulating structure body 11 of this embodiment is a rectangular base and has a bearing surface 111. The first male terminal docking portion 12, the first female terminal docking portion 13, the second male terminal docking portion 14, and the second female terminal docking portion 15 are disposed on the bearing surface 111 of the insulating structure body 11. The first male terminal docking portion 12, the first female terminal docking portion 13, the second male terminal docking portion 14, and the second female terminal docking portion 15 are arranged in a row along a first axis L1, wherein the first male terminal docking portion 12 and the first female terminal docking portion 13 are adjacent to each other, the second male terminal docking portion 14 is adjacent to the first female terminal docking portion 13, and the second female terminal docking portion 15 is adjacent to the first male terminal docking portion 12.

[0029] The first axis L1 passes through the midlines of the first male terminal docking portion 12, the first female terminal docking portion 13, the second male terminal docking portion 14, and the second female terminal docking portion 15 of this embodiment, and the first male terminal docking portion 12, the first female terminal docking portion 13, the second male terminal docking portion 14, and the second female terminal docking portion 15 are all symmetrically structured with respect to the first axis L1.

[0030] The first male terminal docking portion 12 and the first female terminal docking portion 13 of this embodiment form a structure that is complementary in configuration and mates for docking, so the first male terminal docking portion 12 and the first female terminal docking portion 13 have different structures. Similarly, the second male terminal docking portion 14 and the second female terminal docking portion 15 form a structure that is complementary in configuration and mates for docking, so the second male terminal docking portion 14 and the second female terminal docking portion 15 have different structures. The first male terminal docking portion 12 and the first female terminal docking portion 13 are asymmetrically structured with respect to a second axis L2 passing between the first male terminal docking portion 12 and the first female terminal docking portion 13, and the second axis L2 is orthogonal to the first axis L1. Since the second male terminal docking portion 14 is adjacent to the first female terminal docking portion 13 and the second female terminal docking portion 15 is adjacent to the first male terminal docking portion 12, the second male terminal docking portion 14 and the second female terminal docking portion 15 are also asymmetrically structured with respect to the second axis L2.

[0031] When two male-female composite electrical connectors 1 are docked, via the asymmetric structure formed with respect to the second axis L2, the first male docking portion 12 of the insulating structure 10 of one male-female composite electrical connector 1 corresponds to the first female docking portion 13 of the insulating structure 10 of the other male-female composite electrical connector 1 and can form a docking. Similarly, the first female docking portion 13 of the insulating structure 10 of one male-female composite electrical connector 1 corresponds to the first male docking portion 12 of the insulating structure 10 of the other male-female composite electrical connector 1 and can form a docking.

[0032] Similarly, via the asymmetric structure formed with respect to the second axis L2, the second male docking portion 14 of the insulating structure 10 of one male-female composite electrical connector 1 corresponds to the second female docking portion 15 of the insulating structure 10 of the other male-female composite electrical connector 1 and can form a docking. The second female docking portion 15 of the insulating structure 10 of one male-female composite electrical connector 1 corresponds to the second male docking portion 14 of the insulating structure 10 of the other male-female composite electrical connector 1 and can form a docking.

[0033] As Figure 6 and Figure 7 shown, a plurality of first male terminals 20 are disposed in the male docking portion 12 and fixed to the insulating structure body 11. Each first male terminal 20 includes a first male contact portion 20a, a first male fixing portion 20b, and a first male welding portion 20c. The first male fixing portion 20b is fixed to the insulating structure body 11, the first male contact portion 20a extends and protrudes from the bearing surface 111, and the first male welding portion 20c protrudes from the bottom of the insulating structure body 11 and can be inserted into the through hole of the circuit board P to form a welding (DIP). In other embodiments, the first male welding portion 20c can also be welded to the circuit board P using surface mount technology (SMT). The first male terminal 20 of this embodiment is a signal transmission terminal, and the first male contact portion 20a has a flat plate structure.

[0034] A plurality of first female terminals 30 are disposed in the female docking portion 13 and fixed to the insulating structure body 11. Each first female terminal 30 includes a first female contact portion 30a, a first female fixing portion 30b, and a first female welding portion 30c. The first female fixing portion 30b is fixed to the insulating structure body 11, the first female contact portion 30a extends and protrudes from the bearing surface 111, and the first female welding portion 30c protrudes from the bottom of the insulating structure body 11 and can be inserted into the through hole of the circuit board P to form a welding (DIP). In other embodiments, the first female welding portion 30c can also be welded to the circuit board P using surface mount technology (SMT). The first female terminal 30 of this embodiment is a signal transmission terminal, and the first female contact portion 30a has a tuning fork structure.

[0035] Each second male terminal 40 includes a second male contact portion 40a, a second male fixing portion 40b, and a second male soldering portion 40c. The second male fixing portion 40b is fixed to the insulating structure body 11. The second male contact portion 40a extends and protrudes from the bearing surface 111. The second male soldering portion 40c protrudes from the bottom of the insulating structure body 11 and can be inserted into the through hole of the circuit board P to form soldering (DIP). In other embodiments, the second male soldering portion 40c can also be soldered to the circuit board P by surface mount technology (SMT). The second male terminals 40 of this embodiment are power terminals and ground terminals. The two outer second male terminals 40 are ground terminals, and the two middle second male terminals 40 are power terminals. The second male contact portion 40a has a flat plate structure and has a larger width than the first male docking portion 20c.

[0036] Each second female terminal 50 includes a second female contact portion 50a, a second female fixing portion 50b, and a second female soldering portion 50c. The second female fixing portion 50b is fixed to the insulating structure body 11. The second female contact portion 50a extends and protrudes from the bearing surface 111. The second female soldering portion 50c protrudes from the bottom of the insulating structure body 11 and can be inserted into the through hole of the circuit board P to form soldering (DIP). In other embodiments, the second female soldering portion 50c can also be soldered to the circuit board P by surface mount technology (SMT). The second female terminals 50 of this embodiment are power terminals and ground terminals. The two outer pairs of second female terminals 50 are ground terminals, and the two middle pairs of second female terminals 50 are power terminals. The second female contact portion 50a has an elastic arm structure. Two second female terminals 50 are arranged oppositely and dock with a second male terminal 40, so that the two elastic arm-shaped second female contact portions 50a clamp the flat plate-shaped second male contact portion 40a to form a docking structure.

[0037] As Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the first male docking portion 12 includes two first side walls 121. The two first side walls 121 are oppositely arranged on both sides of the first axis L1 on the bearing surface 111. A first docking space S1 is formed between the two first side walls 121. A plurality of first male terminals 20 are arranged in an array in the first docking space S1. The first male contact portion 20a of each first male terminal 20 extends from the bearing surface 111 to the first docking space S1 and is located between the two first side walls 121.

[0038] The first female terminal docking portion 13 includes a first boss 131 and a plurality of first docking grooves 132. The first boss 131 is disposed on the bearing surface 111. The first docking grooves 132 are formed in the first boss 131 and open at the top end of the first boss 131. The first docking grooves 132 have slot holes with a square cross-section. The first docking grooves 132 are arranged in an array. The first female terminal connectors 30 are respectively disposed corresponding to the first docking grooves 132. The first female terminal contact portions 30a of each first female terminal connector 30 extend from the bearing surface into the first docking grooves 132. The first boss 131 has two first side surfaces 1311 oppositely disposed on both sides of the first axis L1.

[0039] The two first side surfaces 1311 are respectively aligned with the inner surfaces of the first side walls 121. Each inner surface of the first side walls 121 is provided with a latching rib 122. Each first side surface 1311 has a latching groove 133. The latching rib 122 corresponds to the latching groove 133. Please refer to Figure 8 and Figure 9 . When the two male-female composite electrical connectors 1 are mated, the first male terminal docking portion 12 of the insulating structure 10 of one male-female composite electrical connector 1 and the first female terminal docking portion 13 of the insulating structure 10 of the other male-female composite electrical connector 1 correspond to each other and can form a docking. Guided by the latching rib 122 engaged with the latching groove 133, the first boss 131 is inserted into the first docking space S1, and the first male terminal contact portion 20a is inserted into the first docking groove 132 to be mated with the first female terminal contact portion 30a.

[0040] As Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the second male terminal docking portion 14 includes two second side walls 141 and a third side wall 142. The second side walls 141 are oppositely disposed on both sides of the first axis L1 on the bearing surface 111. The third side wall 142 is disposed on the bearing surface 111 and connects the two second side walls 141. A second docking space S2 is formed between the two second side walls 141. The second male terminal connectors 40 are arranged in a row in the second docking space S2. The second male terminal contact portions 40a of each second male terminal connector 40 extend from the bearing surface 111 into the second docking space S2.

[0041] The second female terminal docking portion 15 includes a second boss 151 and a plurality of second docking grooves 152. The second boss 151 is disposed on the bearing surface 111. The second docking grooves 152 are formed in the second boss 151 and open at the top end of the second boss 151. The second docking grooves 152 are arranged in a row. The second female terminal contacts 50 are respectively disposed corresponding to the second docking grooves 152. The second female terminal contact portions 50a of each second female terminal contact 50 extend from the bearing surface 111 into the second docking grooves 152. The second boss 151 has two second side surfaces 1511 oppositely disposed on both sides of the first axis L1.

[0042] The two second side surfaces 1511 are respectively aligned with the inner surfaces of the second side walls 141. Each second side wall 141 is provided with a snap spring arm 1411. Each snap spring arm 1411 has a snap projection 1412. Each second side surface 1511 has a snap recess 1512. The snap projection 1412 corresponds to the snap recess 1512. Please refer to Figure 8 and Figure 9 When the male-female combined electrical connector 1 is mated, the second male terminal docking portion 14 of the insulating structure 10 of one male-female combined electrical connector 1 and the second female terminal docking portion 15 of the insulating structure 10 of the other male-female combined electrical connector 1 correspond to each other and can be mated. The second boss 151 is inserted into the second docking space S2 under the guidance of the two second side walls 141, and is snapped into the snap recess 1512 by the snap projection 1412 of the snap spring arm 1411, so that the second boss 151 is positioned within the second docking space S2. The second male terminal contact portion 40a is inserted into the second docking groove 152 and is mated with the second female terminal contact portion 50a.

[0043] For the male-female combined electrical connector of the present invention, the male terminal docking portion and the female terminal docking portion are integrated into one insulating structure, and the configurations of the male terminal docking portion and the female terminal docking portion can allow docking with an exactly same male-female combined electrical connector in an opposite plugging manner. The formed electrical connector combination can be applied to the electrical connection between circuit boards. By appropriately designing the shape of the insulating structure, the male-female combined electrical connectors with the same structure can form a board-to-board electrical connector combination, and only one set of molds needs to be manufactured, thus saving the manufacturing cost and also reducing the cost of component quality management. In addition, since only one set of molds is used to manufacture the male-female combined electrical connector, the tolerance during docking can be reduced.

[0044] The above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention still fall within the scope covered by the present invention. In addition, any embodiment or claim of the present invention does not have to achieve all the purposes, advantages or features provided by the present invention. In addition, the abstract part and the title are only used to assist in searching patent documents and are not used to limit the scope of protection of the present invention. In addition, the terms "first", "second", etc. mentioned in the specification or claims of the present invention are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limits of the number of elements.

Claims

1. A male-female composite electrical connector, characterized in that Comprising: An insulating structure, which includes an insulating structure body, a first male terminal docking portion, and a first female terminal docking portion. The insulating structure body has a bearing surface. The first male terminal docking portion and the first female terminal docking portion are disposed on the bearing surface of the insulating structure body. The configurations of the first male terminal docking portion and the first female terminal docking portion form a structure capable of being cooperatively docked with each other. A plurality of first male terminals, disposed on the first male terminal docking portion and fixed to the bearing surface. Each of the first male terminals includes a first male terminal contact portion, a first male terminal fixing portion, and a first male terminal welding portion. And A plurality of first female terminals, disposed on the first female terminal docking portion and fixed to the bearing surface. Each of the first female terminals includes a first female terminal contact portion, a first female terminal fixing portion, and a first female terminal welding portion. Wherein the insulating structure is disposed on a circuit board. The plurality of first male terminals are electrically connected to the circuit board, and the plurality of first female terminals are electrically connected to the circuit board. Wherein the first male terminal docking portion and the first female terminal docking portion form a symmetric structure with respect to a first axis and an asymmetric structure with respect to a second axis in the insulating structure body. The first axis and the second axis are orthogonal to each other. The first male terminal docking portion and the first female terminal docking portion are arranged side by side along the first axis.

2. The male-female terminal composite electrical connector according to claim 1, wherein The first male terminal docking portion and the first female terminal docking portion are adjacently disposed.

3. The male-female terminal composite electrical connector according to claim 2, wherein, The first male terminal docking portion includes two first side walls. The two first side walls are oppositely disposed on the bearing surface on both sides of the first axis, and a first docking space is formed between the two first side walls. The plurality of first male terminals are arranged in at least one row in the first docking space. The first male terminal contact portion of each of the first male terminals extends from the bearing surface to the first docking space.

4. The male-female terminal composite electrical connector according to claim 3, characterized in that The first female terminal docking portion includes a first boss and a plurality of first docking grooves. The first boss is disposed on the bearing surface. The plurality of first docking grooves are formed in the first boss and open at the top of the first boss. The plurality of first docking grooves are arranged in at least one row. The plurality of first female terminals are respectively disposed corresponding to the plurality of first docking grooves. The first female terminal contact portion of each of the first female terminals extends from the bearing surface into the first docking groove. The first boss has two first side surfaces oppositely disposed on both sides of the first axis.

5. The male-female terminal composite electrical connector according to claim 4, wherein The two first side surfaces are respectively aligned with the inner surfaces of the first side walls. A clamping rib is provided on the inner surface of each of the first side walls. Each of the first side surfaces has a clamping groove. The clamping rib corresponds to the clamping groove.

6. The male-female terminal composite electrical connector according to claim 1 or 4, wherein, Further comprising: A plurality of second male terminals. Each of the second male terminals includes a second male terminal contact portion, a second male terminal fixing portion, and a second male terminal welding portion. The plurality of second male terminals are electrically connected to the circuit board. And A plurality of second female terminals. Each of the second female terminals includes a second female terminal contact portion, a second female terminal fixing portion, and a second female terminal welding portion. The plurality of second female terminals are electrically connected to the circuit board. The insulation structure further includes a second male terminal docking portion and a second female terminal docking portion. The second male terminal docking portion and the second female terminal docking portion are disposed on the bearing surface of the insulation structure body. The configurations of the second male terminal docking portion and the second female terminal docking portion form a structure capable of being cooperatively docked with each other. The plurality of second male terminals are disposed on the second male terminal docking portion, and the plurality of second female terminals are disposed on the second female terminal docking portion; The second male terminal docking portion and the second female terminal docking portion form a symmetric structure with respect to the first axis and an asymmetric structure with respect to the second axis in the insulation structure body.

7. The male-female terminal composite electrical connector according to claim 6, wherein The second male terminal docking portion is adjacent to the first female terminal docking portion, and the second female terminal docking portion is adjacent to the first male terminal docking portion.

8. The male-female terminal composite electrical connector according to claim 7, wherein The second male terminal docking portion includes two second side walls. The two second side walls are oppositely disposed on the bearing surface on both sides of the first axis, and a second docking space is formed between the two second side walls. The plurality of second male terminals are arranged in at least one row in the second docking space. The second male contact portion of each second male terminal extends from the bearing surface to the second docking space.

9. The male-female terminal composite electrical connector according to claim 8, wherein The second female terminal docking portion includes a second boss and a plurality of second docking grooves. The second boss is disposed on the bearing surface. The plurality of second docking grooves are formed in the second boss and open at the top end of the second boss. The plurality of second docking grooves are arranged in at least one row. The plurality of second female terminals are respectively disposed corresponding to the plurality of second docking grooves. The second female contact portion of each second female terminal extends from the bearing surface into the second docking groove. The second boss has two second side surfaces oppositely disposed on both sides of the first axis; the two second side surfaces respectively face the inner surfaces of the second side walls. Each of the second side walls is provided with a snap spring arm. Each snap spring arm has a snap protrusion. Each of the second side surfaces has a snap recess. The snap protrusion corresponds to the snap recess.

10. A board-to-board electrical connector assembly, characterized in that, Including: Two male-female terminal composite electrical connectors according to any one of claims 1 to 9, each of the male-female terminal composite electrical connectors being electrically connected to a circuit board; The first male terminal docking portion of the insulation structure of one of the male-female terminal composite electrical connectors is docked with the first female terminal docking portion of the insulation structure of the other male-female terminal composite electrical connector, and the first female terminal docking portion of the insulation structure of one of the male-female terminal composite electrical connectors is docked with the first male terminal docking portion of the insulation structure of the other male-female terminal composite electrical connector; The plurality of first male terminals of one of the male-female terminal composite electrical connectors are docked with the plurality of first female terminals of the other male-female terminal composite electrical connector, and the plurality of first female terminals of one of the male-female terminal composite electrical connectors are docked with the plurality of first male terminals of the other male-female terminal composite electrical connector.

Images