CN215896782U

CN215896782U - Terminal and electric connector with same

Info

Publication number: CN215896782U
Application number: CN202121435116.XU
Authority: CN
Inventors: 金左锋
Original assignee: Lotes Co Ltd
Current assignee: Lotes Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-22
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses an electric connector, comprising: the insulation body is provided with a plurality of accommodating grooves, and each accommodating groove is provided with a first groove wall and a second groove wall which are oppositely arranged; the plurality of terminals are correspondingly accommodated in the plurality of accommodating grooves, each terminal is provided with a fixing part and two elastic arms formed by extending from the fixing part, the fixing part is fixed in the corresponding accommodating groove, the fixing part is provided with a first side and a second side which are oppositely arranged, the first side is arranged towards the first groove wall, the second side is arranged towards the second groove wall, each elastic arm comprises a connecting part formed by extending from the second side towards the second groove wall, a bending part formed by bending and extending the connecting part forwards, an arm part formed by extending the bending section towards the first groove wall, and the arm part is provided with a contact part, wherein the contact part of one elastic arm upwards extends out of the upper surface of the insulating body, and the contact part of the other elastic arm downwards extends out of the lower surface of the insulating body.

Description

Terminal and electric connector with same

[ technical field ] A method for producing a semiconductor device

The present invention relates to a terminal and an electrical connector having the same, and more particularly, to a terminal with good elasticity suitable for double-sided contact and an electrical connector having the same.

[ background of the utility model ]

A double-side contact electric connector comprises an insulating body and a plurality of conductive terminals accommodated in the insulating body, wherein the conductive terminals are blanking terminals and are in a flat plate shape, each conductive terminal is provided with a fixing part and two elastic arms formed by extending outwards from one of the left side and the right side of the fixing part, one of the elastic arms protrudes upwards out of the upper surface of the insulating body and is used for being electrically connected with a chip, the other elastic arm protrudes downwards out of the lower surface of the insulating body and is used for being electrically connected with a circuit board so as to lead the chip to be conducted with the circuit board, the electric connector is contacted in a vertical compression joint mode, welding is not needed, the electric connector and a terminal product are easy to separate and reconnect in the processes of maintenance, upgrading, testing or replacement, and the electric connector does not have the thermal activity of molten tin, the electric connector has no problems of tin pick-up and the like, and is suitable for densely arranging the conductive terminals.

Under the trend that the electric connector tends to be miniaturized and densified, more conductive terminals are arranged in a limited space, and the space between the conductive terminals is smaller, but the conductive terminal structure occupies more space in the horizontal direction, so that the space between the conductive terminals is larger, the elastic arm is shorter, the elasticity is poor, the contact failure of the conductive terminals and the circuit board or the chip is easily caused, and even the conductive terminals are permanently deformed.

Therefore, in view of the above problems, it is desirable to design a new terminal and an electrical connector having the same to solve the above drawbacks.

[ Utility model ] content

In view of the problems encountered in the background art, the present invention provides a terminal and an electrical connector having the same, which have good elasticity and can reduce the space between adjacent terminals, and are suitable for double-sided contact.

In order to achieve the purpose, the utility model adopts the following technical means:

an electrical connector for electrically connecting a first mating member and a second mating member, comprising: the insulating body is provided with a plurality of accommodating grooves which penetrate through the insulating body up and down, and each accommodating groove is provided with a first groove wall and a second groove wall which are oppositely arranged along the left-right direction; a plurality of terminals correspondingly accommodated in the accommodating grooves, each terminal having a fixing portion and two elastic arms extending from the fixing portion, the fixing portion being fixed in the corresponding accommodating groove, the fixing portion having a first side and a second side oppositely disposed from left to right, the first side being disposed facing the first groove wall, the second side being disposed facing the second groove wall, the two elastic arms being defined as a first elastic arm and a second elastic arm, each elastic arm including a connecting portion extending from the second side toward the second groove wall, a bending portion bending forward from the connecting portion, and an arm portion extending from the bending portion toward the first groove wall, each arm portion having a contact portion, the contact portion of the first elastic arm extending upward beyond the upper surface of the insulating body, the contact part of the second elastic arm extends downwards to the lower surface of the insulating body and is electrically connected with the second butt joint piece.

Furthermore, the insulation body is provided with a convex block corresponding to each accommodating groove, the convex block extends from the first groove wall to the second groove wall, the convex block and the second groove wall are arranged at intervals, and the convex block is positioned between the arm part corresponding to the terminal and the fixing part in the front-back direction.

Further, the bump and the bent portion are arranged at an interval in the left-right direction.

Furthermore, each accommodating groove is provided with a front groove wall and a rear groove wall which are oppositely arranged, the front groove wall and the rear groove wall are both connected with the first groove wall and the second groove wall, the insulating body further comprises a connecting block which is arranged corresponding to each accommodating groove, the connecting block is connected with the convex block and the rear groove wall, the bottom edge of the fixing part is sunken upwards to form a fixing groove, and the connecting blocks are accommodated in the fixing groove and are mutually fixed in an interference mode.

Further, the fixing portion is flat, and a plate thickness of the fixing portion in the front-rear direction is smaller than a distance between the projection and the rear groove wall.

Further, the arm portions of the two elastic arms are arranged at intervals with the front groove wall and the protruding block in the front-rear direction.

Further, the upper surface of the connecting block is lower than the upper surface of the insulating body, and the lower surface of the connecting block does not exceed the lower surface of the insulating body.

Further, the upper surface of the bump is flush with the upper surface of the insulating body, and the lower surface of the bump is flush with the lower surface of the insulating body.

Further, the bending part and the second groove wall are arranged at intervals.

Further, the elastic arm extends beyond the first side in the left-right direction.

Further, the arm portion of the first elastic arm and the arm portion of the second elastic arm extend in a direction away from each other in the up-down direction.

Further, the fixing portion is flat, the first elastic arm and the second elastic arm are aligned up and down, and a vertical plane where the fixing portion of the same terminal is located is parallel to a vertical plane where the arm portion is located.

Furthermore, insulator includes a first edge and a second edge of mutually perpendicular, and is a plurality of the terminal is followed first edge is arranged into the multirow, follows the second edge is arranged into the multiseriate, the fixed part is flat, just the fixed part is relative first edge is inclination setting.

a terminal, comprising: the fixing part comprises a first side and a second side which are oppositely arranged left and right; a first bullet arm and a second bullet arm, first bullet arm with the second bullet arm is all certainly second side is along left right direction court keep away from first side extends, moves towards again first side inflection extends and forms, first bullet arm is located the second plays the top of arm, and on the up-and-down direction, first bullet arm with the second plays and forms a space groove between the arm, first bullet arm with the second plays the arm and all is equipped with a contact site.

Further, the first elastic arm and the second elastic arm are arranged in an up-and-down symmetrical mode relative to the spacing groove.

Furthermore, the bottom edge of the fixing part is recessed upwards to form a fixing groove.

Further, when viewed from the front to the back, the holding groove and the contact portion are arranged in a vertically staggered manner.

Further, the first elastic arm and the second elastic arm extend beyond the first side in the left-right direction, respectively.

Further, each elastic arm comprises a connecting portion extending from the second side in the left-right direction, a bent portion formed by bending and extending the connecting portion forwards, and an arm portion formed by extending the bent portion in the left-right direction and towards the first side, the contact portion is arranged on the arm portion, the arm portion is located in front of the fixing portion, and the arm portion is parallel to the fixing portion when viewed from top to bottom.

Further, the bending part is of an arc-shaped structure.

Compared with the prior art, the terminal and the electric connector with the terminal have the following beneficial effects:

each the bullet arm certainly the fixed part the second side extends and buckles and forms the inflection structure, so sets up, has not only increased the length of bullet arm makes it have the elasticity of preferred, improves the terminal contact first butt joint spare with the stability of second butt joint spare, moreover, reduced the terminal is in on the insulator in the left and right sides space that occupies, make insulator can set up more the terminal.

[ description of the drawings ]

Fig. 1 is a perspective view of the electrical connector of the present invention with a portion of the terminals assembled into the housing;

fig. 2 is a perspective view of the insulator body assembled with all of the terminals of fig. 1;

FIG. 3 is a top view of the insulator body of FIG. 2;

fig. 4 is a perspective view of the terminal of fig. 2 from another perspective;

fig. 5 is a front view of the terminal of fig. 4;

FIG. 6 is a top view of FIG. 2;

fig. 7 is a partial cross-sectional view of the electrical connector of fig. 6 taken along line a-a and coupled to first and second mating members.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 100 with a first edge 11 and a second edge 12 of a housing 1

The first groove wall 131 and the second groove wall 132 of the storage groove 13 are formed with a front groove wall 133

Rear groove wall 134 projection 14 connecting block 15 terminal 2

The first side 211 and the second side 212 of the fixing portion 21 are provided with holding grooves 213

Connection part 221 of first elastic arm 22A and second elastic arm 22B of elastic arm 22

Connecting part 23 of arm 223 contact part 2231 of bent part 222

Material belt S spacing groove G first butt joint piece 200 and second butt joint piece 300

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the utility model, reference should be made to the drawings and detailed description that follow.

Referring to fig. 2 and 7, the electrical connector 100 of the present invention is used for electrically connecting a first mating element 200 and a second mating element 300, in this embodiment, the first mating element 200 is a chip, and the second mating element 300 is a circuit board. Of course, in other embodiments, both the first docking member 200 and the second docking member 300 may be the circuit board, or other components.

For convenience of describing the specific structure of the electrical connector 100, a forward direction of the X axis forward in the front-back direction, a forward direction of the Y axis rightward in the left-right direction, and a forward direction of the Z axis upward in the up-down direction are defined, and the front-back direction, the left-right direction, and the up-down direction are perpendicular to each other in pairs.

As shown in fig. 1 and fig. 2, the electrical connector 100 includes an insulative housing 1, and a plurality of conductive terminals 2 received in the insulative housing 1.

As shown in fig. 1 and 3, the insulative housing 1 is a substantially rectangular body, and includes two first edges 11 and two second edges 12, wherein the first edges 11 are connected to the second edges 12, the first edges 11 and the second edges 12 are perpendicular to each other, and both upper and lower surfaces of the insulative housing 1 are connected to the first edges 11 and the second edges 12.

As shown in fig. 1 and 3, the insulating housing 1 has a plurality of receiving slots 13, and the plurality of receiving slots 13 are arranged in a plurality of rows along the first edge 11 and in a plurality of columns along the second edge 12. Each of the accommodating slots 13 penetrates the insulating body 1 from top to bottom, each of the accommodating slots 13 has a first slot wall 131 and a second slot wall 132 oppositely arranged along the left-right direction, and a front slot wall 133 and a rear slot wall 134 oppositely arranged along the front-rear direction, and both the front slot wall 133 and the rear slot wall 134 are connected to the first slot wall 131 and the second slot wall 132.

As shown in fig. 2 and fig. 3, in the present embodiment, the first groove wall 131 is a stepped surface, and the second groove wall 132 is disposed in an arc-shaped surface, in other embodiments, both the first groove wall 131 and the second groove wall 132 may be a vertical plane, and of course, other structure types may be selected according to requirements.

As shown in fig. 3, in the present embodiment, the front slot wall 133 and the rear slot wall 134 are both vertical planes and are parallel to each other, the length of the front slot wall 133 extending in the left-right direction is greater than the length of the rear slot wall 134 extending in the left-right direction, and the front slot wall 133 is disposed at an oblique angle with respect to the first edge 11. In other embodiments, the front slot wall 133 and the rear slot wall 134 may be not limited to a vertical plane, and other structures may be adopted according to the requirement.

As shown in fig. 3, the insulating housing 1 is provided with a bump 14 and a connecting block 15 corresponding to each receiving slot 13.

As shown in fig. 2, 3 and 7, the protrusion 14 is formed by extending from the first groove wall 131 toward the second groove wall 132, and is spaced apart from the second groove wall 132, an upper surface of the protrusion 14 is flush with an upper surface of the insulation body 1, and a lower surface of the protrusion 14 is flush with a lower surface of the insulation body 1. In this embodiment, the groove wall of the first groove wall 131 between the protruding block 14 and the rear groove wall 134 is disposed closer to the second groove wall 132 than the groove wall of the first groove wall 131 between the protruding block 14 and the front groove wall 133 in the left-right direction, the surface of the protruding block 14 facing the second groove wall 132 is an arc surface, and in other embodiments, the protruding block 14 may be disposed lower than the upper surface of the insulating body 1 and higher than the lower surface of the insulating body 1.

As shown in fig. 3 and 7, the connecting block 15 connects the protrusion 14 and the rear groove wall 134, and the connecting block 15 is adjacent to the first groove wall 131 and spaced apart from the first groove wall 131. The upper surface of the connecting block 15 is lower than the upper surface of the insulating body 1, and the lower surface of the connecting block 15 does not exceed the lower surface of the insulating body 1, and in this embodiment, the lower surface of the connecting block 15 is flush with the lower surface of the insulating body 1.

As shown in fig. 1 and 2, the plurality of terminals 2 are accommodated in the plurality of accommodating grooves 13, and the plurality of terminals 2 are arranged in a plurality of rows along the first edge 11 and in a plurality of columns along the second edge 12.

As shown in fig. 4, 5 and 7, each of the terminals 2 has a fixed portion 21 and two elastic arms 22 extending from the fixed portion 21, wherein one of the elastic arms 22 is defined as a first elastic arm 22A, the other elastic arm is defined as a second elastic arm 22B, the first elastic arm 22A is located above the second elastic arm 22B, the two elastic arms 22 are spaced in the up-down direction, and a spacing groove G is formed therebetween, so that when the first elastic arm 22A and the second elastic arm 22B are respectively abutted with the first abutting member 200 and the second abutting member 300, the first elastic arm 22A and the second elastic arm 22B can elastically deform toward the spacing groove G, that is, the spacing groove G provides a space for the first elastic arm 22A and the second elastic arm 22B to yield when being deformed by a force.

As shown in fig. 4, 5 and 6, the fixing portion 21 is a flat plate and has a first side 211 and a second side 212 oppositely disposed at left and right sides, the first side 211 is disposed facing the first groove wall 131, the second side 212 is disposed facing the second groove wall 132, and in this embodiment, the first side 211 is disposed at an interval with the first groove wall 131 between the protruding block 14 and the rear groove wall 134. The fixing portion 21 is disposed at an inclined angle with respect to the first edge 11, and a plate thickness of the fixing portion 21 in the front-rear direction is smaller than a distance between the projection 14 and the rear groove wall 134.

As shown in fig. 5 and 7, the bottom edge of the fixing portion 21 is recessed upward to form a holding groove 213, so that the fixing portion 21 is substantially U-shaped, the connecting blocks 15 are received in the holding groove 213 and fixed by interference with each other, and thus the fixing portion 21 rides over the connecting block 15 downward, so that the terminals 2 are fixed in the corresponding receiving grooves 13.

As shown in fig. 4 and 6, each of the elastic arms extends from the second side 212 in a left-right direction away from the first side 211 and then is folded back and extended toward the first side 211, specifically, each of the elastic arms 22 includes a connecting portion 221 formed by extending from the second side 212 toward the second groove wall 132, a bending portion 222 formed by bending and extending from the connecting portion 221 forward, an arm portion 223 formed by extending from the bending portion 222 toward the first groove wall 131, alternatively, each of the elastic arms 22 includes a connecting portion 221 extending from the second side 212 in the left-right direction, a bent portion 222 bent and extending from the connecting portion 221 in the forward direction, and an arm portion 223 extending from the bent portion 222 in the left-right direction and toward the first side 211, and the arm portion 223 is located in front of the fixing portion 21.

As shown in fig. 7, the connecting portion 221 is disposed coplanar with the fixing portion 21, and the connecting portion 221 is located between the rear groove wall 134 corresponding to the receiving groove 13 and the protrusion 14.

As shown in fig. 7, the bent portion 222 and the second groove wall 132 are spaced apart in the left-right direction, and the bent portion 222 and the protruding block 14 are spaced apart in the left-right direction, in this embodiment, the bent portion 222 is in an arc shape, so that the shape of the bent portion can be matched with the surface of the second groove wall 132 facing the second groove wall 132 and the surface of the protruding block 14 facing the second groove wall 132.

As shown in fig. 5 and 6, the arm portion 223 extends beyond the first side 211 in the left-right direction, that is, the extending end of the arm portion 223 extends beyond the first side 211 rightward in the left-right direction, so that the spring arm 22 of the terminal 2 having a longer length facilitates the elastic deformation of the terminal 2. The vertical plane of the arm 223 and the vertical plane of the fixing portion 21 are parallel to each other, that is, the arm 223 is parallel to the fixing portion 21 when viewed from the top. The projection 14 is located between the arm portion 223 corresponding to the terminal 2 and the fixing portion 21 in the front-rear direction, preventing the terminal 2 from excessively swinging back and forth. The arm portions 223 of the two elastic arms 22 are spaced from the front groove wall 133 and the projection 14 in the front-rear direction, so that the elastic arms 22 are prevented from scraping the surface of the front groove wall 133 or the projection 14 during the process of being pressed and elastically deformed.

As shown in fig. 4 and 5, the arm portion 223 of the first elastic arm 22A and the arm portion 223 of the second elastic arm 22B extend in a direction away from each other in the up-down direction.

As shown in fig. 2, 5 and 7, each of the arm portions 223 has a contact portion 2231, the contact portion 2231 of the first elastic arm 22A extends upward out of the upper surface of the insulating body 1 to electrically connect with the first mating connector 200, the contact portion 2231 of the second elastic arm 22B extends downward out of the lower surface of the insulating body 1 to electrically connect with the second mating connector 300, when viewed from the front to the back, the holding groove 213 and the contact portion 2231 of the first elastic arm 22A are disposed in a vertically staggered manner, and the holding groove 213 and the contact portion 2231 of the second elastic arm 22B are disposed in a vertically staggered manner.

As shown in fig. 4 and 5, in the present embodiment, the first elastic arm 22A and the second elastic arm 22B are aligned up and down, and the first elastic arm 22A and the second elastic arm 22B are disposed up and down symmetrically with respect to the spacing groove G.

As shown in fig. 1, 4 and 7, each of the terminals 2 is provided with a connecting portion 23 at an upper end of the fixing portion 21 for connecting a strip S, and the connecting portion 23 does not exceed the upper surface of the insulating body 1.

In summary, the terminal and the electrical connector having the same of the present invention have the following advantages:

(1) each of the elastic arms 22 is composed of the connecting portion 221, the bent portion 222 and the arm portion 223, the connecting portion 221 extends from the second side 212 of the fixing portion 21 in the left-right direction away from the first side 211, and forms a return through the bending portion 222, the arm portion 223 is formed extending from the bent portion 222 toward the first side 211 in the left-right direction, namely, the elastic arm 22 extends from the second side 212 of the fixing portion 21 and is bent to form a folded structure, with such an arrangement, not only the length of the elastic arm 22 is increased to have better elasticity, and the stability of the terminal 2 contacting the first docking member 200 and the second docking member 300 is improved, moreover, the space occupied by the terminals 2 in the left-right direction on the insulating body 1 is reduced, so that the insulating body 1 can be provided with more terminals 2.

(2) The plate thickness of the fixing portion 21 in the front-rear direction is smaller than the distance between the projection 14 and the rear groove wall 134, and the tape S connected to the fixing portion 21 can be easily separated after the terminal 2 is mounted in the housing groove 13.

(3) The projection 14 is located between the arm portion 223 corresponding to the terminal 2 and the fixing portion 21 in the front-rear direction, preventing the terminal 2 from excessively swinging back and forth.

(4) The arm portion 223 extends beyond the first side 211 in the left-right direction, so that the terminal 2 has the longer spring arm 22, facilitating elastic deformation of the terminal 2.

(5) The arm portions 223 of the two elastic arms 22 are spaced from the front groove wall 133 and the projection 14 in the front-rear direction, so that the elastic arms 22 are prevented from scraping the surface of the front groove wall 133 or the projection 14 during the process of being pressed and elastically deformed.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and drawings are included in the scope of the present invention.

Claims

1. An electrical connector for electrically connecting a first mating member and a second mating member, comprising:

the insulating body is provided with a plurality of accommodating grooves which penetrate through the insulating body up and down, and each accommodating groove is provided with a first groove wall and a second groove wall which are oppositely arranged along the left-right direction;

a plurality of terminals correspondingly accommodated in the accommodating grooves, each terminal having a fixing portion and two elastic arms extending from the fixing portion, the fixing portion being fixed in the corresponding accommodating groove, the fixing portion having a first side and a second side oppositely disposed from left to right, the first side being disposed facing the first groove wall, the second side being disposed facing the second groove wall, the two elastic arms being defined as a first elastic arm and a second elastic arm, each elastic arm including a connecting portion extending from the second side toward the second groove wall, a bending portion bending forward from the connecting portion, and an arm portion extending from the bending portion toward the first groove wall, each arm portion having a contact portion, the contact portion of the first elastic arm extending upward beyond the upper surface of the insulating body, the contact part of the second elastic arm extends downwards to the lower surface of the insulating body and is electrically connected with the second butt joint piece.

2. The electrical connector of claim 1, wherein: the insulation body is provided with a convex block corresponding to each containing groove, the convex block extends from the first groove wall to the second groove wall, the convex block and the second groove wall are arranged at intervals, and the convex block is positioned between the arm part corresponding to the terminal and the fixing part in the front-back direction.

3. The electrical connector of claim 2, wherein: the protruding blocks and the bending parts are arranged at intervals in the left-right direction.

4. The electrical connector of claim 2, wherein: each accommodating groove is provided with a front groove wall and a rear groove wall which are oppositely arranged, the front groove wall and the rear groove wall are connected with the first groove wall and the second groove wall, the insulating body further comprises a connecting block which is arranged corresponding to each accommodating groove, the connecting block is connected with the convex block and the rear groove wall, the bottom edge of the fixing part is sunken upwards to form a fixing groove, and the connecting blocks are accommodated in the fixing groove and are mutually fixed in an interference mode.

5. The electrical connector of claim 4, wherein: the fixing part is flat, and the plate thickness of the fixing part in the front-back direction is smaller than the distance between the convex block and the rear groove wall.

6. The electrical connector of claim 4, wherein: the arm parts of the two elastic arms are arranged at intervals with the front groove wall and the protruding block in the front-back direction.

7. The electrical connector of claim 4, wherein: the upper surface of the connecting block is lower than the upper surface of the insulating body, and the lower surface of the connecting block does not exceed the lower surface of the insulating body.

8. The electrical connector of claim 2, wherein: the upper surface of the lug is flush with the upper surface of the insulating body, and the lower surface of the lug is flush with the lower surface of the insulating body.

9. The electrical connector of claim 1, wherein: the bending part and the second groove wall are arranged at intervals.

10. The electrical connector of claim 1, wherein: the spring arm extends beyond the first side in the left-right direction.

11. The electrical connector of claim 1, wherein: the arm portion of the first elastic arm and the arm portion of the second elastic arm extend in a direction away from each other in the up-down direction.

12. The electrical connector of claim 1, wherein: the fixing part is flat, the first elastic arm and the second elastic arm are aligned up and down, and a vertical plane where the fixing part is located and a vertical plane where the arm part is located are parallel to each other.

13. The electrical connector of claim 1, wherein: the insulating body comprises a first edge and a second edge which are perpendicular to each other, the terminals are arranged in a plurality of rows along the first edge and a plurality of columns along the second edge, the fixing part is flat, and the fixing part is opposite to the first edge and is arranged at an inclined angle.

14. A terminal, comprising: the fixing part comprises a first side and a second side which are oppositely arranged left and right; a first bullet arm and a second bullet arm, first bullet arm with the second bullet arm is all certainly second side is along left right direction court keep away from first side extends, moves towards again first side inflection extends and forms, first bullet arm is located the second plays the top of arm, and on the up-and-down direction, first bullet arm with the second plays and forms a space groove between the arm, first bullet arm with the second plays the arm and all is equipped with a contact site.

15. The terminal of claim 14, wherein: the first elastic arm and the second elastic arm are arranged up and down symmetrically relative to the spacing groove.

16. The terminal of claim 14, wherein: the bottom edge of the fixing part is recessed upwards to form a fixing groove.

17. The terminal of claim 16, wherein: and when the fixing groove is seen from the front to the back, the fixing groove and the contact part are arranged in a vertically staggered manner.

18. The terminal of claim 14, wherein: the first elastic arm and the second elastic arm extend beyond the first side in the left-right direction, respectively.

19. The terminal of claim 14, wherein: each elastic arm comprises a connecting part extending from the second side in the left-right direction, a bent part formed by bending and extending the connecting part forwards, and an arm part formed by extending the bent part in the left-right direction and towards the first side, wherein the contact part is arranged on the arm part, the arm part is positioned in front of the fixing part, and the arm part is parallel to the fixing part when viewed from top to bottom.

20. The terminal of claim 19, wherein: the bending part is of an arc-shaped structure.