TWI601344B - Electrical connector and engagment and disconnection methods thereof - Google Patents

Description

Electrical connector and method for fixing and fixing same

The present invention relates to an electrical connector, and more particularly to a wire-to-board electrical connector that can be vertically fixed or unsecured by an elastic device, and a method of combining and separating the same.

With the advent of the technological age, a wide variety of electronic products are constantly evolving. While the requirements of related devices are required to be improved, the requirements for the stability of electronic components are relatively increased to accommodate higher electrical performance and increasingly complex environments, and the connectors are mainly used as connections and signal transmission between electronic products. An important medium.

Wire-to-board connectors have been widely used in various types of mobile communication devices and various types of personal terminal devices to realize signal or power connection and transmission between functional devices and motherboards within such devices. The conventional wire-to-board connector assembly generally includes a plug connector and a socket connector, and the direction in which the wire-to-board connector combination plug connector is inserted can be divided into horizontal insertion and vertical insertion. Wherein, the horizontal insertion mode means that the plug connector is inserted into the socket connector in a direction parallel to the substrate, and the vertical insertion mode means that the socket connector is inserted into the socket connector from top to bottom in a direction perpendicular to the substrate, for example, the new patent of China M463433 number. The vertical insertion method saves the space for insertion, but because of the height limitation, the insertion depth is short, making the quality of the connection less stable. The current vertical plug-in-to-board connector usually has a buckle on the plastic connector body of the socket connector and the plug connector to increase the holding force of the plug connector itself to prevent the plug connector from being detached, but the card The buckle provides limited holding power. The plug connector may still detach when gravity is accelerated (such as falling to the ground), and the signal or power supply contacts are not connected.

Therefore, how to strengthen the structure of the plug connector and the socket connector to prevent the inadvertent force (such as falling off the ground) is not easy to separate and avoid damage, which is still a problem to be solved.

It is an object of the present invention to provide an electrical connector in which the elastic means can be vertically coupled or fixed.

It is still another object of the present invention to provide an electrical connector that is easy to handle when the plug connector and the receptacle connector are combined and separated.

Another object of the present invention is to provide a method of combining and fixing an electrical connector.

An electrical connector for achieving the above object, comprising a plug connector for connecting a cable to electrically connect an opposing socket connector, and having a first insulative housing and at least one first fastening portion, wherein the first The insulative housing has a front end surface and a rear end surface to extend the cable and the two side walls to provide the first fastening portion, and the front end surface has at least one elastic arm; the corresponding socket connector is disposed on a circuit The board has a second insulative housing, a plurality of conductive terminals, at least one second fastening portion, and at least one elastic arm, wherein the second insulative housing is provided with a main wall portion and the elastic arm can be abutted therein a wall portion, an arm portion extending from each side of the main wall portion, the main wall portion and the two side arm portions define an accommodating space for accommodating the plug connector, and the second fastening portion is disposed on the two sides The arm portion corresponds to the first fastening portion corresponding to the accommodating space, and the side arm portion has an elastic wall; when the plug connector is vertically inserted into the socket connector, The elastic arm on the front end surface of the plug connector first presses the inner wall surface of the main wall portion and elastically deforms, and the two side walls of the plug connector expand the elastic wall toward the accommodating space, and then the elastic arm Recovering force to push back the plug connector, so that the first fastening portion and the second fastening portion can be closely fastened; and when the plug connector is loosened from the socket connector, force is applied to the plug The elastic arm of the front end surface of the connector presses the inner wall surface of the main wall portion and elastically deforms, and simultaneously expands the elastic wall toward the accommodating space, so that the first fastening portion 逐渐 can be gradually separated from the first portion The fastening of the two fastening parts.

Another electrical connector that achieves the above purpose is to connect a cable to the rear end surface thereof, and the front end surface is provided with at least one elastic arm for actuating the electrical connector and a corresponding socket connector disposed on a circuit board. And the fastening of the fastening is achieved by the corresponding fastening portion of the electrical connector and the socket connector; when the fastening is performed, the elastic arm is topped Deformed by the inner wall surface of one of the socket connectors, and the deformation amount of the elastic arm is gradually increased as the fastening is performed until the electrical connector touches the bottom wall of the socket connector, and the elastic arm is further The restoring force is such that the fastening portions can be buckled; and when the fastening is released, the electrical connector is applied to the electrical connector, so that the elastic arm is deformed against the inner wall surface so that the loose buckles are mutually engaged. The fastening portions of the electrical connector are loosened in the reverse direction of the electrical connector to release the socket connector.

The elastic arm extends obliquely downward from the top of the front end face of the plug connector.

The elastic arm extends obliquely upward from the bottom of the front end face of the plug connector.

The lower end of the elastic arm of the front end surface of the plug connector has an oblique angle, and the insertion The upper end of the seat connector corresponding to the bevel has a guiding portion.

The elastic wall is provided with a pressing portion adjacent to the end of the inner wall surface and extends toward the receiving space. Therefore, the pressing portion can be buckled when the first fastening portion and the second fastening portion are closely engaged. The two side walls of the plug connector further strengthen the combination of the plug connector and the socket connector.

A method for bonding and fixing an electrical connector that achieves the above object, comprising the steps of: providing a cable connector having a resilient arm at a front end thereof and having a plurality of fastening portions and a plurality of grooves on a side thereof; providing an electrical connector Is fixed on a circuit board, wherein the body of the electrical connector has a main wall portion and an inner wall surface for the elastic arm to abut, and the opposite side arm portion of the main wall portion is connected to the two, defining a The accommodating space, the main wall portion can accommodate a plurality of conductive terminals, and the opposite side arm portions are elastic and are provided with a plurality of grooves and a plurality of fastening portions for respectively corresponding to the plurality of grooves of the cable connector And the plurality of fastening portions, wherein the opposite side arms each have an elastic wall; the cable connector is coupled to the electrical connector in a vertical manner, and pushes the elastic arm of the front end surface of the cable connector The elastic arm is elastically deformable and generates a restoring force, and the elastic wall is expanded outwardly toward the accommodating space; and the restoring force generated by the elastic arm is pushed back during the bonding process, so that the cable connector is pushed back The front end faces against the inside Surface, so that the plurality of grooves and a plurality of fastening the fastening portion of the plurality of portions of the cable connector and said recess is a plurality of the electrical connector of the snap close.

The opposite side arm is provided with a pressing portion adjacent to one end of the inner wall surface and extends toward the receiving space. Therefore, the pressing portion can be buckled against the two side walls of the cable connector to further strengthen the bonding.

An unfixing method for an electrical connector that achieves the above object, comprising the following steps Step: providing a cable connector, the front end of the mask has a resilient arm, and has a plurality of fastening portions and a plurality of grooves on the side thereof; an electrical connector is provided and is fixed on a circuit board, wherein the electrical connector The main body has a main wall portion and an inner wall surface for the elastic arm to abut, and two opposite side arm portions of the main wall portion are respectively connected to define an accommodating space, and the main wall portion can accommodate a plurality of conductive terminals The opposite side arm portion is elastic and is provided with a plurality of grooves and a plurality of fastening portions for respectively corresponding to the plurality of grooves of the cable connector and the plurality of fastening portions, and the side arms are closely fastened The portion has a resilient wall; a horizontal thrust is applied to the cable connector such that the resilient arm of the front end face of the cable connector is deformed toward the inner wall surface against the inner wall portion, and the elastic wall is oriented toward The plurality of fastening portions of the cable connector are correspondingly loosened from the plurality of fastening portions of the electrical connector; and the cable connector is self-verted in a substantially vertical direction. The accommodating space of the electrical connector is detached.

100, 100’‧‧‧ electrical connectors

1‧‧‧ plug connector

2‧‧‧Socket connector

3‧‧‧ cable

10‧‧‧First Insulation Body

11‧‧‧First fastening

12‧‧‧ front end

13‧‧‧ rear end face

14‧‧‧ side wall

15, 15'‧‧‧ resilient arm

16‧‧‧First groove

17‧‧‧Bevel

18‧‧‧ Third fastening

19‧‧‧ third groove

20‧‧‧Second insulation body

21‧‧‧Multiple conductive terminals

22‧‧‧Second Fastener

23‧‧‧Main wall

24‧‧‧ lateral arm

25‧‧‧ accommodating space

26‧‧‧Flexible wall

27‧‧‧Depression

28‧‧‧second groove

29‧‧‧Guidance

30‧‧‧fourth fastening

31‧‧‧fourth groove

S101~S104‧‧‧Steps

S201~S204‧‧‧Steps

The first figure shows an exploded perspective view of the electrical connector of the present invention.

The second figure shows an operational perspective view of the electrical connector of the present invention.

The third figure shows a combined perspective view of the electrical connector of the present invention.

4A to 4D are diagrams showing the operation of the first embodiment of the electrical connector of the present invention along the line A-A when combined and fixed.

Figs. 5A to 5C are views showing the operation of the electrical connector of the first embodiment of the first figure taken along the line A-A when the electrical connector of the present invention is released.

Figure 6 is an exploded perspective view showing another embodiment of the electrical connector assembly of the present invention.

Figure 7 is a flow chart showing the method of bonding and fixing the electrical connector of the present invention. Figure.

The eighth figure is a flow chart showing the method of releasing the electrical connector of the present invention.

While the invention has been described with reference to the preferred embodiments of the present invention, it is understood that those skilled in the art can modify the invention described herein while achieving the effect of the invention. Therefore, it is to be understood that the foregoing description is a broad disclosure of those skilled in the art and is not intended to limit the invention.

Referring to the first figure, an exploded perspective view of the electrical connector of the present invention is shown. The electrical connector 100 of the present invention comprises: a plug connector 1 , which is connected to a cable 3 and has a first insulative housing 10 and at least one first fastening portion 11 , wherein the first insulative housing 10 has a front end a first end portion 13 extending from the cable line 3 and the two side walls 14 to provide the first fastening portion 11 and a resilient arm 15 on each side of the front end surface 12; and a socket connector 2 The second insulative housing 20 is disposed on a circuit board (not shown) and has a second insulative housing 20, a plurality of conductive terminals 21, and at least one second fastening portion 22, wherein the second insulative housing 20 is provided with a main wall portion 23 and An inner wall surface of the elastic arm 15 abutting, and an arm portion 24 extending from each side of the main wall portion 23, the main wall portion 23 and the two side arm portions 24 define a plug connector 1 The accommodating space 25 is disposed on the two side arm portions 24 to correspond to the first fastening portion 11 in the accommodating space 25, and each of the two side arm portions 24 has an elasticity Wall 26.

With reference to the first figure, in the embodiment, the first fastening portion 11 is an L-shaped hook and has a horizontal portion, and the first side of the first insulating body 10 is further provided with a first recess. The horizontal portion of the first fastening portion 11 protrudes from the first groove 16; the second fastening portion The second portion of the second insulative housing 20 is further provided with a second recess 28, and the horizontal portion of the second fastening portion 22 is protruded from the first portion The second elastic groove 15 extends obliquely downward from the top of the front end surface 12 of the plug connector 1 , and the lower end of the elastic arm 15 has an oblique angle 17 (refer to FIG. 4A) And the upper end of the main wall portion 23 of the receptacle connector 2 corresponding to the oblique angle 17 of the elastic arm 15 has a guiding portion 29 (please refer to the third and fourth figures); and the elastic wall 26 is close to One end of the inner wall surface is provided with a pressing portion 27 and extends toward the accommodating space 25, so that the pressing portion 27 can be buckled when the first fastening portion 11 and the second fastening portion 22 are closely engaged. The two side walls 14 of the plug connector 1 further strengthen the combination of the plug connector 1 and the socket connector 2.

In addition, in the present embodiment, the plug connector 1 of the electrical connector 100 of the present invention is a cable connector, and the plug connector 1 further has a third fastening portion 18 and a third recess 19 (please refer to the The third fastening portion 18 is also disposed on two sides of the first insulative housing 10 and also has an L-shaped hook and has a horizontal portion. The horizontal portion of the third fastening portion 18 is convex. The socket connector 2 is similarly disposed with a fourth fastening portion 30 and a fourth recess 31 (refer to FIG. 4A). The fourth fastening portion is provided. The second arm portion 24 of the second insulative housing 20 is also disposed on the second side of the second insulative housing 20 and has a horizontal portion. The horizontal portion of the fourth fastening portion 30 protrudes from the fourth recess 31. Inside.

Referring to the second and third figures, there is shown a perspective view of the operation of the electrical connector of the present invention and a combined perspective view of the electrical connector of the present invention. When the plug connector 1 is to be mated with the socket connector 2, the plug connector 1 is placed in the receiving space 25 of the socket connector 2 in a vertical manner. At this time, the first fastening portion 11 is disposed in the second recess 28, and the second fastening portion 22 is disposed in the first recess 16. Similarly, the third fastening portion 18 is disposed in the fourth recess 31. The fourth fastening portion 30 is disposed in the third recess 19, and at this time, the front end face 12 of the plug connector 1 The elastic arm 15 abuts against the main wall portion 23 of the socket connector 2, and firstly presses the inner wall surface of the main wall portion 23 and elastically deforms, and the elastic wall 26 is also pressed by the two side walls 14 of the plug connector 1. And the elastic wall 26 is expanded to the accommodating space 25 (as shown in the third figure), and then the plug connector 1 is pushed back by the restoring force of the elastic arm 15, so that the first fastening portion 11 is The second fastening portion 22 can be closely fastened, and the third fastening portion 18 and the fourth fastening portion 30 can be closely fastened, and the pressing portion 27 of the elastic wall 26 is fastened against the plug connector. 1. The plug connector 1 is securely connected to the receptacle connector 2 in a stable manner.

Please refer to FIGS. 4A to 4D for the operation diagram of the first embodiment of the electrical connector of the present invention along the line A-A when combined and fixed. When the plug connector 1 of the electrical connector 100 of the present invention is to be electrically connected to the receptacle connector 2, the plug connector 1 is first placed above the receptacle connector 2, and the first fastening portion 11 is Aligning the second groove 28, the second fastening portion 22 is aligned with the first groove 16, the third fastening portion 18 is aligned with the fourth groove 31, and the fourth fastening portion is 30 is aligned with the third recess 19, as shown in FIG. 4A, and then the bevel 17 of the elastic arm 15 of the plug connector 1 is abutted against the guide by the guiding portion 29 of the receptacle connector 2. The plug portion 29 is placed in the accommodating space 25 of the socket connector 2 in a vertical placement manner, as shown in FIG. 4B, at this time, before the plug connector 1 is The elastic arm 15 on the end surface 12 firstly presses the inner wall surface of the main wall portion 23 and elastically deforms the first fastening portion 11 into the second recess 28, and the second fastening portion 22 The third fastening portion 18 is disposed in the fourth recess 31, and the fourth fastening portion 30 is disposed in the third recess 19, and The elastic arm 15 is subjected to a thrust compression As shown in FIG. 4C, the elastic wall 26 is also pushed by the side walls 14 of the plug connector 1 to expand the elastic wall 26 toward the accommodating space 25. (Please refer to the third Figure), and then push back the front end of the plug connector 1 by the restoring force of the elastic arm 15 The first fastening portion 11 is fastened to the second fastening portion 22, and the third fastening portion 18 is also closely coupled to the fourth fastening portion 30, and the elastic wall 26 is fastened. The crimping portion 27 is fastened against the two side walls 14 of the plug connector 1 so that the plug connector 1 is firmly connected to the receptacle connector 2 as shown in FIG. 4D.

Referring to FIGS. 5A to 5C, FIG. 1 is a schematic view showing the operation of the electrical connector of the present invention in the first diagram along the line A-A when the electrical connector is unfixed. When the socket connector 2 of the electrical connector 100 of the present invention releases the plug connector 1, first thrust is applied to push the plug connector 1 forward, as shown in FIG. 5A, the plug connector 1 is made The elastic arm 15 of the front end surface 12 presses the inner wall surface of the main wall portion 23 and is elastically deformed. At this time, the L-shaped hooks corresponding to the first fastening portion 11 and the third fastening portion 18 correspond to each other. The inverted L-shaped hook presented by the second fastening portion 22 and the fourth fastening portion 30 is as shown in FIG. 5B, and at the same time, the pressing portion 27 of the elastic wall 26 is disengaged from the plug connector 1 The second side wall 14 extends the elastic wall 26 to the accommodating space 25, and finally the plug connector 1 is vertically separated from the accommodating space 25 of the socket connector 2, so that the plug connector 1 is separated from the socket connector 2 as shown in FIG.

Referring to the sixth drawing, there is shown an exploded perspective view of another embodiment of the electrical connector of the present invention. The structure of the electrical connector 100' of the present embodiment is substantially the same as that of the embodiment of the first embodiment of the electrical connector 100', except that the resilient arm 15' of the present embodiment is the front end of the plug connector 1. The bottom of the face 12 extends directly obliquely upward.

Please refer to the seventh figure, which is a schematic flow chart showing the method for bonding and fixing the electrical connector of the present invention. The method for bonding and fixing the electrical connector of the present invention comprises the steps of: providing a cable connector, the front end of the mask having a resilient arm, and having a plurality of fastening portions and a plurality of grooves on the side thereof (S101); providing an electrical connector , is fixed on a circuit board, wherein the body of the electrical connector The utility model has a main wall portion and an inner wall surface which can be abutted against the elastic arm, and an opposite side arm portion which is connected to the main wall portion, and defines an accommodating space, wherein the main wall portion can accommodate a plurality of conductive terminals, and The opposite side arm portion is elastic and is provided with a plurality of grooves and a plurality of fastening portions for respectively corresponding to the plurality of grooves of the cable connector and the plurality of fastening portions, and the opposite side arm portions each have a An elastic wall (S102); the cable connector is coupled to the electrical connector in a vertical manner, and pushes the elastic arm of the front end face of the cable connector, the elastic arm is elastically deformable and generates a restoring force, and simultaneously Expanding the elastic wall toward the accommodating space (S103); and causing the restoring force generated by the elastic arm to push back the cable connector during the bonding process, so that the front end surface abuts against the inner wall surface, so the cable The plurality of fastening portions of the connector and the plurality of recesses are closely engaged with the plurality of recesses of the electrical connector and the plurality of fastening portions (S104).

The opposite side arm portion is provided with a pressing portion adjacent to one end of the inner wall surface and extends toward the receiving space. Therefore, the pressing portion can be buckled against the two side walls of the cable connector to further strengthen the bonding.

Please refer to the eighth figure, which is a schematic flow chart showing the method for releasing the electrical connector of the present invention. The method for unfastening the electrical connector of the present invention comprises the steps of: providing a cable connector, the front end of the mask having a resilient arm, and having a plurality of fastening portions and a plurality of grooves on the side thereof (S201); providing an electrical connector Fixing on a circuit board, wherein the body of the electrical connector has a main wall portion and an inner wall surface for the elastic arm to abut, and the opposite side arm portion of the main wall portion is connected to the two to define An accommodating space, the main wall portion can accommodate a plurality of conductive terminals, and the opposite side arm portions are elastic and provided with a plurality of grooves and a plurality of fastening portions to respectively correspond to the plurality of grooves of the cable connector and The plurality of fastening portions are tightly fastened, and the side arm portion has an elastic wall (S202); a horizontal thrust is applied to the cable connector to cause the front end surface of the cable connector to be elasticized The elastic arm is deformed toward the inner wall surface against the inner wall surface, and the elastic wall is slightly expanded toward the outer space, and the plurality of fastening portions of the cable connector are correspondingly connected to the electrical connector. The plurality of fastening portions are gradually released (S203); and the cable connector is detached from the accommodating space of the electrical connector in a substantially vertical direction (S204).

The electrical connector of the present invention causes the elastic arms 15, 15' to undergo a thrust compression to generate an elastic recovery by pushing the elastic arms 15, 15' of the plug connector 1 which abut against the main wall portion of the socket connector. And returning the front end portion 12 of the plug connector 1 to the first fastening portion 11 and the third fastening portion 18 of the plug connector 1 corresponding to the second buckle of the socket connector 2 by the elastic restoring force The connecting portion 22 and the fourth fastening portion 30 are fastened, and the elastic wall 26 is pushed away by the two side walls 14 of the plug connector 1 , and the pressing portion 27 of the elastic wall 26 is fastened against the plug connector 1 . The second side wall 14 is configured to electrically connect the plug connector 1 to the socket connector 2, and is not easily separated when the electrical connector 100, 100' is tested for drop; and the electrical connector 100 of the present invention The combination of the plug connector 1 and the receptacle connector 2 is easy to operate, and the plug connector 1 and the receptacle connector 2 are fixed without additional fixing structures, thereby reducing the manufacturing cost.

11‧‧‧First fastening

12‧‧‧ front end

13‧‧‧ rear end face

15‧‧‧Flexible arm

16‧‧‧First groove

17‧‧‧Bevel

18‧‧‧ Third fastening

19‧‧‧ third groove

22‧‧‧Second Fastener

23‧‧‧Main wall

28‧‧‧second groove

29‧‧‧Guidance

30‧‧‧fourth fastening

31‧‧‧fourth groove

Claims (11)

An electrical connector includes a plug connector for connecting a cable to electrically connect a corresponding receptacle connector, and has a first insulative housing and at least one first fastening portion, wherein the first insulative housing has a a front end surface and a rear end surface extend to extend the cable and the two side walls to provide the first fastening portion, and the front end surface has at least one elastic arm; the corresponding socket connector is disposed on a circuit board, and The utility model has a second insulating body, a plurality of conductive terminals and at least one second fastening portion, wherein the second insulating body is provided with a main wall portion and an inner wall surface for the elastic arm to abut, and the main wall portion has two sides Extending a side arm portion, the main wall portion and the two side arm portions define an accommodating space for accommodating the plug connector, and the second fastening portion is disposed on the two side arm portions for receiving a first fastening portion corresponding to the space, and the side arm portion has an elastic wall; when the plug connector is vertically inserted into the socket connector, the elastic arm on the front end surface of the plug connector first presses the main body The inner wall surface of the wall portion is elastically deformed At the same time, the two side walls of the plug connector expand the elastic wall to the accommodating space, and then push back the plug connector by the restoring force of the elastic arm, so that the first fastening portion and the second fastening portion can be closely When the plug connector is loosened from the socket connector, a force is applied to urge the elastic arm of the front end surface of the plug connector to press the inner wall surface of the main wall portion and elastically deform, and at the same time The elastic wall is expanded outwardly from the accommodating space, so that the first fastening portion 逐渐 can be gradually detached from the fastening of the second fastening portion. An electrical connector is connected to a rear end surface of a cable, and a front end surface thereof is provided with at least one elastic arm for actuating the vertical connection of the electrical connector with a corresponding socket connector disposed on a circuit board and Dissolving the fastening, the fastening of the fastening is achieved by the corresponding connector on the electrical connector and the socket connector; when the fastening is performed, the elastic arm first abuts the socket connector One of the inner wall faces is deformed, and the amount of deformation of the elastic arm gradually changes with the fastening until the electrical connector touches the bottom wall of the socket connector, and then the restoring force of the elastic arm causes the elastic arms to recover The fastening portion can be buckled; when the fastening is released, the electrical connection needs to be applied. And the elastic arm is deformed against the inner wall surface to loosen the fastening portions that have been fastened to each other, and the electrical connector is loosened from the socket connector in a reverse direction. The electrical connector of claim 1 or 2, wherein the resilient arm extends obliquely downwardly from the top of the front end face of the plug connector. The electrical connector of claim 1, wherein the elastic arm extends obliquely upward from a bottom of the front end face of the plug connector. The electrical connector of claim 2, wherein the resilient arm extends obliquely upwardly from the bottom of the front end face of the plug connector. The electrical connector of claim 3, wherein the lower end of the resilient arm of the front end face of the plug connector has an oblique angle, and the upper end of the receptacle connector corresponding to the oblique angle has a guiding unit. The electrical connector of claim 1, wherein the elastic wall is provided with a pressing portion adjacent to an end of the inner wall surface and extends toward the receiving space, so that the pressing portion can be When the first fastening portion and the second fastening portion are closely engaged, the two side walls of the plug connector are buckled to further strengthen the combination of the plug connector and the socket connector. The electrical connector of claim 6, wherein the elastic wall is provided with a pressing portion near one end of the inner wall surface and extends toward the receiving space, so that the pressing portion can be at the first fastening portion. When the second fastening portion is closely fastened, the two side walls of the plug connector are buckled to further strengthen the combination of the plug connector and the socket connector. A method for bonding and fixing an electrical connector includes: providing a cable connector, the front end of the mask having a resilient arm, and having a plurality of fastening portions and a plurality of grooves on a side thereof; and providing an electrical connector fixed to the cable a circuit board, wherein the body of the electrical connector has a main wall portion and an inner wall surface for the elastic arm to abut, and the main wall portion is connected to the two The opposite side arm defines an accommodating space, the main wall portion can accommodate a plurality of conductive terminals, and the opposite side arm portions are elastic and are provided with a plurality of grooves and a plurality of fastening portions for respectively corresponding cables The plurality of recesses of the connector and the plurality of fastening portions, and the opposite side arms each have an elastic wall; the cable connector is coupled to the electrical connector in a vertical manner and pushes the cable connector The elastic arm of the front end surface is elastically deformable and generates a restoring force, and the elastic wall is expanded outwardly toward the accommodating space; and the restoring force generated by the elastic arm is pushed back during the bonding process The cable connector is configured to abut the front end surface against the inner wall surface, so that the plurality of fastening portions of the cable connector and the plurality of recesses are closely related to the plurality of recesses of the electrical connector and the plurality of fastening portions Fastened. The method of combining and fixing an electrical connector according to claim 9, wherein the opposite side arm portion is provided with a pressing portion near one end of the inner wall surface and extends toward the receiving space, so the buckle portion can be buckled. The two side walls of the cable connector are pressed against each other to further strengthen the bonding. A method for unfastening an electrical connector includes: providing a cable connector, the front end of the mask having a resilient arm, and having a plurality of fastening portions and a plurality of grooves on a side thereof; and providing an electrical connector fixed to the cable On the circuit board, the main body of the electrical connector has a main wall portion and an inner wall surface for the elastic arm to abut, and the opposite side arm portions of the main wall portion are connected to the two to define an accommodation space. The main wall portion can accommodate a plurality of conductive terminals, and the opposite side arm portions are elastic and are provided with a plurality of grooves and a plurality of fastening portions to respectively correspond to the plurality of grooves of the cable connector and the plurality of fastening portions And the side arm has an elastic wall; a horizontal thrust is applied to the cable connector, so that the elastic arm of the front end face of the cable connector faces the main wall portion Deformation of the wall surface and the elastic wall facing the accommodation space Slightly expanding, at the same time, the plurality of fastening portions of the cable connector are correspondingly loosened from the plurality of fastening portions of the electrical connector; and the cable connector is in a substantially vertical direction from the electrical connector The accommodation space is separated.