TW201830780A - Magnetic connector assembly - Google Patents

Abstract

A magnetic connector comprises an insulative housing, a plurality of terminals having a plurality of upper terminals and a plurality of lower terminals retained to the insulative housing, and a plurality of magnetic elements located on both sides of the terminals. The insulative housing has a mating area located at a front end thereof. Each terminal has a contacting portion exposed to the mating area. The upper terminals and the lower terminals are misaligned in a lateral direction. The magnetic elements comprise a first magnetic element and a second magnetic element having an opposite magnetic pole to the first magnetic element making the magnetic connector mated in a positive direction and avoiding the terminals contacting in mistake.

Description

Magnetic suction connector combination

The present invention relates to a magnetic suction type connector combination, and more particularly, to a magnetic suction type connector combination for preventing reverse insertion.

U.S. Patent No. 7311526, published on December 25, 2007, discloses a magnetic electrical connector, which includes a socket end and a plug end connected to the socket end. The socket end is provided with two magnetic components with different magnetic poles, and the plug end is provided with A magnetically conductive piece, so that the plug end and the socket end can be magnetically fitted together in the forward or reverse direction. It cannot be controlled by magnetic components and prevents the plug end from magnetically engaging with the socket end in only one direction. The pogo pin type connector disclosed in Taiwan's new type patent No. M486194 announced on September 11, 2014, the first plug-in part and the second plug-in part are respectively provided with two magnetic attraction parts of different magnetic poles, using the same pole The principle of repulsion and attraction of opposite poles allows the first plug-in part and the second plug-in part to be magnetically mated only in the forward direction, and the conductive terminals are arranged in a row. The conductive terminals are incorrectly overlapped to affect the normal use of electronic equipment.

Therefore, it is indeed necessary to provide a new magnetic connector assembly to overcome the above drawbacks.

The purpose of the present invention is to provide a new magnetic connector assembly, which has the advantage that the socket connector and the plug connector can only be docked in the positive direction by using magnetic components, and prevents the socket terminal when the two sides are forcibly reversely docked. Incorrect connection with plug terminals.

To solve the foregoing technical problems, the present invention may adopt the following technical solutions:

A magnetic-type connector includes an insulating body, a plurality of conductive terminals housed in the insulating body, and magnetic elements located on both sides of the plurality of conductive terminals, and the insulating body has a front end provided. The docking area, the plurality of conductive terminals are disposed in the docking area and have a contact portion exposed to the docking area, the plurality of conductive terminals include an upper row of terminals and a lower row of terminals provided in the docking area, the The upper-row terminal and the conductive terminals in the lower-row terminal are arranged in a misalignment in a lateral direction, and the magnetic element includes a first magnetic element and a first magnetic element located on opposite sides of the upper-row terminal and the lower-row terminal. Two magnetic components.

Further, the magnetic-type connector of the magnetic-type connector of the present invention is used to be mounted on an external circuit board and accommodated in a housing of an external electronic device having a receiving cavity.

Further, the insulating body of the magnetic-type connector of the present invention has a base and a main body portion in the base that holds the upper row of terminals and the lower row of terminals, and the docking area is located in the main body of the main body. At the front end, the base is recessed from the back to the front, and receiving grooves are respectively formed on both sides of the main body portion to receive the first magnetic element and the second magnetic element.

Further, the front end of the main body portion of the magnetic connector of the present invention protrudes from the front end of the base to form a boss portion, and the socket terminal is provided with a contact portion exposed to the front end of the boss portion. .

Further, the base of the magnetic-type connector of the present invention further includes a fixing portion at a rear end of the base, the fixing portion includes a plurality of fixing grooves, and each of the conductive terminals further includes a fixing portion held in the main body portion. The holding portion and the welding portion bent downwardly exposed at the rear end of the main body portion, and the welding portions of the plurality of conductive terminals pass through the plurality of fixing grooves downwardly, respectively.

Further, the present invention provides a magnetic attracting connector combination, which includes a socket connector for mounting on a circuit board and a plug connector for docking with the socket connector. The socket connector includes an insulating body and is housed in A plurality of socket terminals in the insulating body and magnetic components located on both sides of the socket terminal, the plug connector includes a docking body, a plurality of plug terminals housed in the docking body and the socket terminal, and provided on the The magnetic elements on both sides of the plurality of plug terminals, the socket terminal includes an upper row terminal and a lower row terminal, the upper row terminal and the socket terminal in the lower row terminal are all staggered, and the magnetic element includes a The first magnetic element and the second magnetic element with opposite magnetic poles on opposite sides of the upper row terminal and the lower row terminal, and the plug terminal includes an upper row docking terminal corresponding to the upper row terminal and a lower row Row terminals are one-to-one corresponding to the lower row of docking terminals, and the two sides of the upper row of docking terminals opposite to the lower row of docking terminals are respectively provided with the first magnetic element. Said second magnetic element attract each having opposite magnetic poles of the third magnetic element and the fourth magnetic element.

Further, the insulating body of the magnetic-type connector assembly of the present invention has a base and a main body portion in the base that holds the upper row of terminals and the lower row of terminals. The front end of the base forms a boss portion, the socket terminal is provided with a contact portion exposed to the front end of the boss portion, and the base is recessed forward from the rear end and is formed on both sides of the main body portion. A receiving groove for receiving the first magnetic element and the second magnetic element respectively.

Further, the socket connector of the magnetic-type connector assembly of the present invention further includes a housing having a docking hole, the insulating body is fixed on the housing or the housing extends from one end of the insulating body, and the convex The table part is accommodated in the docking hole and forms a docking space with the docking hole.

Further, the docking body of the magnetic attraction connector combination of the present invention has a base portion, a rear end of the base portion is recessed forward with a ring-shaped mounting groove, a docking portion is formed inside the mounting groove, and the plug terminal is fixedly mounted on The docking portion has a front end protruding from the docking portion, the third magnetic element and the fourth magnetic element are connected to form a ring-shaped magnetic ring, and the magnetic ring is installed and received in the mounting groove.

Further, the socket connector and the plug connector of the magnetic attraction connector combination of the present invention can only be magnetically connected in a forward direction, and the insulating body defines a front end surface between two adjacent upper row terminals. Between the two adjacent lower-row terminals and the two sides of the lower-row terminals are defined as error-proof spaces on the front surface, when the plug connector is oppositely docked with the socket connector, The upper row of docking terminals and the lower row of docking terminals abut against the mis-insertion prevention space, respectively.

Compared with the prior art, the present invention has the following effects: the first magnetic element and the second magnetic element have opposite magnetic poles so that the magnetic attraction connector can only be docked in a positive direction; the socket terminal and the plug terminal are only An arrangement is provided for two rows of misalignment, and the conductive terminals are prevented from being erroneously overlapped when the magnetic attraction connector is reversely docked.

In the following, specific embodiments of the magnetically attractable connector assembly 100 of the present invention will be described with reference to the first to eleventh figures. The direction of the description of the present invention is based on the first figure, and defines the X-axis extending in the left-right direction, the Y-axis extending perpendicular to the X-axis and extending in the up-down direction, and the Z-axis perpendicular to the X-axis and Y-axis and extending in the front-back direction. . The direction indicated by the X-axis arrow is left, the direction indicated by the Y-axis arrow is up, and the direction indicated by the Z-axis arrow is forward.

Please refer to the first to eleventh figures. The present invention provides a magnetic attracting connector assembly 100 including a socket connector 110 and a plug connector 120. The plurality of conductive terminals include a plurality of socket terminals 3 of the socket connector 110 and a plurality of plug terminals 6 of the plug connector 120.

Please refer to the first to fifth figures and the ninth to eleventh figures. The socket connector 110 is mounted on the first circuit board 111 in the electronic device. The socket connector 110 includes an insulating body 20, a plurality of socket terminals 3 held in the insulating body 20, a first magnetic element 41, a second magnetic element 42 fixed in the insulating body 20, and a docking hole 1121.的 壳 112。 The housing 112.

Referring to the first to fifth figures, the insulating body 20 includes a base 21 and a boss portion 25 (abutting area) extending forward from the base 21. The base 21 defines a front end surface 211 and a rear end surface 212 corresponding to the front end surface 211. The base 21 includes a main body portion 22, a fixing portion 23 located at a rear end of the main body portion 22, and a frame body 24 surrounding the main body portion 22. The rear end of the fixing portion 23 is provided with five fixing grooves 231. The housing 24 defines two receiving grooves 241 on both sides of the main body 22. The rear end surface 212 is located in the two receiving grooves 241. When viewed in the front-rear direction, the upper and lower edges of the boss portion 25 are long straight edges, the left and right edges thereof are arc edges, and the front end of the boss portion 25 is smaller than the rear end.

Please refer to the drawings. Please refer to the first to fifth drawings and the ninth to eleventh drawings. The insulating body 20 and the plurality of socket terminals 3 are integrally injection-molded into a whole. The number of the plurality of socket terminals 3 is five, including an upper row of terminals 310 and a lower row of terminals 320. Each of the socket terminals 3 includes a contact portion 301 exposed on a front end surface of the boss portion 25, a holding portion 302 held in the insulating body 20, and a rear end extending out of the rear end of the main body portion 22 and bent downward. The soldering portion 303 passes through the fixing groove 231 and is mated with the first circuit board 111. Referring to the ninth figure, the number of terminals of the upper row of terminals 310 is three, and the number of terminals of the lower row of terminals 320 is two. The two lower-row terminals 320 are respectively positioned in an up-and-down direction and positioned below the two upper-row terminals 310 in an offset manner.

Please refer to the second to fifth figures and the ninth to eleventh figures, the first magnetic element 41 and the second magnetic element 42 are respectively installed in the two receiving slots 241. The first magnetic element 41 and the second magnetic element 42 both abut against the rear end surface 212 of the base 21. The front end of the first magnetic element 41 resisting the rear end surface 212 is a first magnetic pole S (S pole), and the front end of the second magnetic element 42 resisting the rear end surface 212 is a second magnetic pole N ( N pole). The first magnetic pole S is opposite to the magnetic pole of the second magnetic pole N. The first magnetic element 41 is located on the right side in the lateral direction of the upper row of terminals 310 and 320 and the second magnetic element 42 is located on the left side in the transverse direction.

Please refer to the drawings. Please refer to the first to fifth figures and the ninth to eleventh figures. In this embodiment, the casing 112 is an outer wall of the electronic device. The casing 112 may be made of a metal material or an insulating material. A front end surface 211 of the base 21 abuts against an inner surface of the casing 112. The boss portion 25 is located in the docking hole 1121 and forms an annular docking space 1122 with the docking hole 1121. The front surface 211 of the base 21 is partially exposed in the docking space 1122. The first magnetic element 41 and the second magnetic element 42 are respectively provided at the rear of both lateral sides of the docking space 1122. In some other embodiments, the casing 112 may be formed by extending from the front end of the insulating body 20 and formed integrally with the outer wall of the electronic device.

Please refer to FIG. 6 to FIG. 11, the plug connector 120 includes a docking body 50, a plurality of plug terminals 6 held in the docking body 50, and a third magnetic body held in a rear end of the docking body 50. The element 72, the fourth magnetic element 73, and the insulating shell 9 sleeved outside the docking body 50. The plurality of plug terminals 6 of the plug connector 120 are connected to a cable (not shown) through a second circuit board 8 provided between the docking body 50 and the insulating case 9.

Please refer to FIG. 6 to FIG. 11, the docking body 50 includes a base portion 51, a docking portion 52 extending rearwardly from a rear end of the base portion 51, and an annular wall 53 surrounding the periphery of the docking portion 52. And a pair of convex portions 55 on both sides of the rear end of the base portion 51. The abutting portion 52 is corresponding to the boss portion 25 and is a columnar body. When viewed in the front-rear direction, the upper and lower edges of the docking portion 52 are long straight edges, and the left and right edges are arc edges. The annular wall 53 is annularly arranged around the abutting portion 52 and forms an annular mounting groove 54 between the abutting portion 52 and the abutting portion 52. A pair of latching grooves 551 are correspondingly provided inside the pair of convex portions 55.

Referring to FIGS. 6 to 11, the docking body 50 and the plurality of plug terminals 6 are integrally injection-molded or the plurality of plug terminals 6 are inserted into the docking body 50. The number of the plurality of plug terminals 6 is five. Each of the plug terminals 6 is provided corresponding to each of the socket terminals 3 of the socket connector 110. Each of the plug terminals 6 includes a sleeve, a spring located in the sleeve, an abutment portion 601 partially received in the rear end of the sleeve and pressed by the spring, and a front end of the sleeve portion 602 The welding foot 603 formed by extending forward. The abutting portion 601 of each of the plug terminals 6 is exposed rearwardly on the rear end surface of the abutting portion 52. The abutting portions 601 of each of the plug terminals 6 can be elastically moved in the front-rear direction, so that they can stably abut against each of the receptacle terminals 3 of the receptacle connector 110. The plurality of plug terminals 6 include an upper-row docking terminal 610 and a lower-row docking terminal 620 that are provided in a one-to-one correspondence with the upper-row terminal 310 and the lower-row terminal 320. The welding feet 603 of the upper row of butt terminals 610 are located on the upper edge of the front end of the sleeve portion 602. The welding feet 603 of the lower row of docking terminals 620 are located at the lower edge of the front end of the sleeve portion 602. Referring to the ninth figure, the number of terminals of the upper row of mating terminals 610 is three, and the number of terminals of the lower row of mating terminals 620 is two. The two lower-row docking terminals 620 are respectively positioned in an up-and-down direction below the two upper-row docking terminals 610 adjacent to each other in a dislocation arrangement.

Please refer to FIG. 6 to FIG. 11, the third magnetic element 72 and the fourth magnetic element 73 are connected as a ring-shaped magnetic ring 7 and are disposed corresponding to the mounting groove 54. The magnetic ring 7 is mounted and received in the mounting groove 54. The docking body 50 is integrally injection-molded with the magnetic ring 7 or the magnetic ring 7 is inserted into the mounting groove 54. The third magnetic element 72 and the fourth magnetic element 73 of the magnetic ring 7 are magnetically matched with the first magnetic element 41 and the second magnetic element 42, respectively. The third magnetic element 72 and the fourth magnetic element 73 have opposite magnetic poles. One end of the third magnetic element 72 magnetically mated with the first magnetic element 41 is a second magnetic pole N, and one end of the fourth magnetic element 73 magnetically mated with the second magnetic element 42 is a first magnetic pole. S, so that the plug connector 120 can only be magnetically mated with the socket connector 110 in a forward direction. If the plug connector 120 is reversely docked with the socket connector 110, the magnetic poles of the butt ends of the first magnetic element 41 and the fourth magnetic element 73, the second magnetic element 42 and the third magnetic element 72 are the same and mutually repel, thereby preventing The plug connector 120 is oppositely docked with the socket connector 110 to prevent the plurality of socket terminals 3 from being misconnected with the plurality of plug terminals 6. The rear end of the magnetic ring 7 is exposed to the rear of the mounting groove 54 and forms a pair of connecting cavities 71. Each of the abutting portions 52 and the abutting portion 601 of the plug terminal 6 are housed in the abutting cavity 71.

Please refer to FIG. 6 to FIG. 11, the second circuit board 8 is installed at the front end of the base portion 51 and both sides are held in the pair of card slots 551. The soldering pins 603 of the upper row of mating terminals 610 are fixed to the upper surface of the second circuit board 8, and the soldering pins 603 of the lower row of mating terminals 620 are fixed to the lower surface of the second circuit board 8. The front and rear ends of the second circuit board 8 abut against the inner wall of the insulating case 9 and the front ends of the base portion 51 and the sleeve portions 602, respectively, and can not only stably hold the second circuit board. 8. It is also possible to prevent each of the plug terminals 6 from moving forward and rotating.

Please refer to the ninth figure, the five socket terminals 3 of the socket connector 110 and the five plug terminals 6 of the plug connector 120 are arranged in two rows and are arranged in a "W" shape. The five socket terminals 3 of the socket connector 110 are used as an example for illustration: among the three upper rows of terminals 310, there is a mis-insertion prevention space 350 defined between two adjacent upper rows of terminals 310, and two of the lower rows The lateral sides of the terminal 320 and the space therebetween also define a mis-insertion prevention space 350. When the plug connector 120 is reversely docked with the socket connector 110, the two lower-row mating terminals 620 of the plug connector 120 abut against the guard between the two adjacent upper-row terminals 310. In the mis-insertion space 350, the three mating terminals 610 in the upper row respectively abut against the mis-insertion prevention space 350 in the lateral sides of and between the two lower-row terminals 320, so as to prevent the reverse mating. The five socket terminals 3 of the socket connector 110 and the five plug terminals 6 of the plug connector 120 are incorrectly overlapped.

Please refer to the ninth to eleventh figures. When the plug connector 120 is docked with the socket connector 110, the magnetic ring 7 of the plug connector 120 is inserted into the docking space 1122 of the socket connector 110. And abut against the front end surface 211 of the base 21. The third magnetic element 72 and the fourth magnetic element 73 at the left and right ends of the magnetic ring 7 are magnetically matched with the first magnetic element 41 and the second magnetic element 42 respectively. At this time, the boss portion 25 is inserted forward into the docking cavity 71. The abutting portions 601 of the upper row of mating terminals 610 and the lower row of mating terminals 620 abut against the contact portions 301 of the upper row of terminals 310 and the lower row of terminals 320, respectively.

In this embodiment, the convex portion 25 of the socket connector 110 and the abutment portion 52 of the plug connector 120 are symmetrically arranged on a central axis extending in the vertical direction and a central axis extending in the horizontal direction. In other embodiments, the boss portion 25 and the mating portion 52 may be symmetrically arranged on any one of the central axes, so as to better achieve the purpose that the socket connector 110 and the plug connector 120 can only be mated in a positive direction. .

In summary, the present invention has indeed met the requirements for an invention patent, and a patent application has been filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and the scope of rights of the present invention cannot be limited by this. For example, equivalent modifications or changes made by those with ordinary knowledge in the technical field based on the spirit of the present invention are still covered by the scope of the attached patent application.

100‧‧‧Magnetic connector combination

110‧‧‧Socket Connector

111‧‧‧first circuit board

112‧‧‧Shell

1121‧‧‧ Butt hole

1122‧‧‧Docking Space

20‧‧‧Insulated body

21‧‧‧ base

211‧‧‧front face

212‧‧‧ rear face

22‧‧‧Main body

23‧‧‧Fixed section

231‧‧‧Fixed slot

24‧‧‧Frame

241‧‧‧Container

25‧‧‧ Boss

3‧‧‧Socket Terminal

301‧‧‧Contact

302‧‧‧holding department

303‧‧‧Welding Department

310‧‧‧Upper row terminal

320‧‧‧ Lower row terminal

350‧‧‧Anti-misinsertion space

41‧‧‧First magnetic element

42‧‧‧Second magnetic element

S‧‧‧First magnetic pole

N‧‧‧Second magnetic pole

120‧‧‧Plug connector

50‧‧‧ docking body

51‧‧‧ base

52‧‧‧ Butt Department

53‧‧‧ annular wall

54‧‧‧Mounting slot

55‧‧‧ convex

551‧‧‧Card slot

6‧‧‧Plug terminal

601‧‧‧Rejection Department

602‧‧‧ Sleeve

603‧‧‧welding foot

610‧‧‧ Upper row butt terminal

620‧‧‧bottom mating terminal

7‧‧‧ magnetic ring

71‧‧‧ Butt cavity

72‧‧‧ third magnetic element

73‧‧‧Fourth magnetic element

8‧‧‧ second circuit board

9‧‧‧Insulation case

The first diagram is a schematic perspective view of the magnetic connector assembly of the present invention. The second figure is a schematic perspective view of the first figure viewed from another direction. The third figure is a partial perspective exploded view of the socket connector of the magnetic-type connector combination of the present invention. The fourth figure is a further exploded perspective view of the third figure. The fifth figure is a partially exploded view of the fourth figure viewed from another direction. The sixth figure is a partially exploded view of the plug connector of the magnetic connector assembly of the present invention. The seventh figure is a further exploded perspective view of the sixth figure. The eighth figure is a partially exploded view of the seventh figure viewed from another direction. The ninth figure is a perspective view of the socket connector viewed from the front and the plug connector and the plug connector viewed from the front. The tenth figure is a schematic cross-sectional view taken along the line X-X of the first figure. The eleventh figure is a schematic cross-sectional view taken along the line X-X of the first figure when the plug connector and the socket connector are docked. The invention is further described below with reference to the drawings and embodiments.

no

Claims (10)

A magnetic-type connector includes an insulating body, a plurality of conductive terminals housed in the insulating body, and magnetic elements located on both sides of the plurality of conductive terminals, and the insulating body has a front end provided. The docking area, the plurality of conductive terminals are disposed in the docking area and have a contact portion exposed to the docking area, wherein the plurality of conductive terminals include an upper row of terminals and a lower row of terminals provided in the docking area, The upper-row terminal and the conductive terminals in the lower-row terminal are both misaligned in a lateral direction, and the magnetic element includes a first magnetic element located on opposite sides of the upper-row terminal and the lower-row terminal. And a second magnetic element. The magnetic connector according to item 1 of the patent application scope, wherein the magnetic connector is used to be mounted on an external circuit board and accommodates a housing of an external electronic device limited to a docking hole. The magnetic connector according to item 1 of the scope of patent application, wherein the insulating body has a base and a main body portion in the base that holds the upper and lower rows of terminals, and the docking area Located at the front end of the main body portion, the base is recessed from the rear to the front, and receiving grooves are respectively formed on both sides of the main body portion to receive the first magnetic element and the second magnetic element. The magnetic connector according to item 3 of the patent application, wherein a front end of the main body portion protrudes from a front end of the base to form a boss portion, and the socket terminal is provided with the boss exposed. The contact part of the front end of the part. The magnetic connector according to item 3 of the scope of patent application, wherein the base further includes a fixing portion at a rear end of the base, the fixing portion includes a plurality of fixing grooves, and each of the conductive terminals further includes a holding A holding portion in the main body portion and a welding portion which is exposed at the rear end of the main body portion and bent downward, and the welding portions of the plurality of conductive terminals respectively pass through the plurality of fixing grooves downward. A magnetic attracting connector combination includes a socket connector for mounting on a circuit board and a plug connector for docking with the socket connector. The socket connector includes an insulating body and a housing accommodated in the insulating body. A plurality of socket terminals and magnetic elements located on both sides of the socket terminal, the plug connector includes a docking body, a plurality of plug terminals housed in the docking body and the socket terminal, and two of the plurality of plug terminals Side magnetic element, wherein the socket terminal includes an upper row terminal and a lower row terminal, the upper row terminal and the socket terminal in the lower row terminal are all staggered, and the magnetic element includes the upper row terminal The first magnetic element and the second magnetic element having opposite magnetic poles on opposite sides of the lower row of terminals, the plug terminal includes upper row mating terminals corresponding to the upper row of terminals and one to one of the lower row of terminals. Corresponding lower row docking terminals, the two sides of the upper row docking terminal opposite the lower row docking terminals are respectively provided with the first magnetic element and the second magnetic Attraction member having opposite magnetic poles of the third magnetic element and the fourth magnetic element. The magnetic connector assembly according to item 6 of the scope of patent application, wherein the insulating body has a base and a main body portion in the base that holds the upper row of terminals and the lower row of terminals, and the main body The protruding portion of the portion protrudes from the front end of the base to form a boss portion. The socket terminal is provided with a contact portion exposed to the front end of the boss portion. A receiving groove for receiving the first magnetic element and the second magnetic element on both sides of the main body portion. According to the magnetic connector assembly described in item 7 of the scope of the patent application, wherein the receptacle connector is contained in a housing having a docking hole, and the boss portion is received in the docking hole and is in contact with the docking hole. An annular docking space is formed therebetween, and the first magnetic element and the second magnetic element are respectively disposed behind the lateral sides of the docking space. The magnetic connector assembly according to item 8 of the scope of the patent application, wherein the docking body has a base portion, and the rear end of the base portion is recessed forward with a ring-shaped mounting groove. The plug terminal is mounted and held in the butting portion and has a rear end protruding from the butting portion, and the third magnetic element and the fourth magnetic element are connected to form a portion that is received and installed in the installation groove and protrudes The magnetic ring at the rear end of the docking body, the magnetic ring forms a docking cavity, and when the plug connector is docked with the socket connector, the magnetic ring is accommodated in the annular docking space, the docking portion and The boss portion is commonly received in the docking cavity and allows the plug terminal and the socket terminal to oppose in the docking cavity. According to the magnetic connector assembly described in item 6 of the patent application scope, wherein the socket connector and the plug connector can only be magnetically connected in a forward direction, the insulating body defines a front surface, and two adjacent Between the upper-row terminals and between two adjacent lower-row terminals are defined as error-proof spaces on the front surface. When the plug connector is oppositely docked with the socket connector, the upper The row of docking terminals and the bottom row of docking terminals abut against the mis-insertion prevention space, respectively.