Electrical connection terminal and electrical connection device

Abstract

The invention discloses an electrical connection terminal and an electrical connection device. The electrical connection terminal includes: a welding portion located at one longitudinal end of the electrical connection terminal; a press-fit portion located at the other longitudinal end of the electrical connection terminal; one end of the first rigid part is connected with the welding part; one end of the second rigid part is connected with the press-fit part; and an elastic portion. The elastic part comprises a first elastic arm, one end of which is connected with the other end of the first rigid part; one end of the second elastic arm is connected with the other end of the second rigid part; the first limiting part is connected with the other ends of the first elastic arm and the second elastic arm and extends towards the first rigid part; and the second limiting part is connected with the other ends of the first elastic arm and the second elastic arm and extends towards the second rigid part. The first limiting part and the second limiting part are suitable for abutting against the end faces of the other ends of the first rigid part and the second rigid part respectively so as to limit the elastic deformation amount of the elastic arm in the longitudinal direction. The elastic part has better elastic buffering performance and can absorb larger installation position errors.

Description

Technical Field

[0001] The invention relates to an electric connection terminal and an electric connection device comprising the electric connection terminal. Background Art

[0002] In the prior art, an electrical connection terminal for electrically connecting two circuit boards generally includes a welding portion and a press-fit portion located at both ends thereof. The welding portion is used to be welded to the first circuit board, and the press-fit portion is used to be plugged into the socket on the second circuit board to achieve electrical connection between the first circuit board and the second circuit board. In the prior art, the first circuit board is generally a ceramic copper-clad board, which is very thin and easily damaged. However, when the press-fit portion of the electrical connection terminal is plugged into the socket on the second circuit board, a large longitudinal plugging force needs to be applied to the electrical connection terminal, which may cause damage to the first circuit board. Summary of the invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, an electrical connection terminal is provided. The electrical connection terminal comprises: a welding portion located at one longitudinal end of the electrical connection terminal; a press-fit portion located at the other longitudinal end of the electrical connection terminal; a first rigid portion, one end of which is connected to the welding portion; a second rigid portion, one end of which is connected to the press-fit portion; and an elastic portion. The elastic portion comprises: a first elastic arm, one end of which is connected to the other end of the first rigid portion; a second elastic arm, one end of which is connected to the other end of the second rigid portion; a first limiting portion, which is connected to the other ends of the first elastic arm and the second elastic arm and extends toward the first rigid portion; a second limiting portion, which is connected to the other ends of the first elastic arm and the second elastic arm and extends toward the second rigid portion. The first limiting portion and the second limiting portion are suitable for respectively abutting against the end faces of the other ends of the first rigid portion and the second rigid portion to limit the elastic deformation of the first elastic arm and the second elastic arm in the longitudinal direction of the electrical connection terminal.

[0005] According to an exemplary embodiment of the present invention, the first elastic arm and the second elastic arm are arc-shaped and arch toward opposite directions in a transverse direction of the electrical connection terminal.

[0006] According to another exemplary embodiment of the present invention, the first elastic arm is located on one side of the electrical connection terminal in a transverse direction; and the second elastic arm is located on the other side of the electrical connection terminal in a transverse direction.

[0007] According to another exemplary embodiment of the present invention, the first limiting portion extends along the longitudinal direction of the electrical connection terminal toward the end surface of the first rigid portion; the second limiting portion extends along the longitudinal direction of the electrical connection terminal toward the end surface of the second rigid portion.

[0008] According to another exemplary embodiment of the present invention, when the electrical connection terminal is in a natural state without being subjected to force, a first gap is provided between the end face of the first limiting portion and the end face of the first rigid portion, and a second gap is provided between the end face of the second limiting portion and the end face of the second rigid portion.

[0009] According to another exemplary embodiment of the present invention, the first gap is set to be equal to, slightly smaller than, or slightly larger than the second gap.

[0010] According to another exemplary embodiment of the present invention, the first elastic arm and the first limiting portion respectively have an arc-shaped inner side surface and an arc-shaped outer side surface opposite to each other in the lateral direction of the electrical connection terminal; an elliptical first hole is defined between the first elastic arm and the arc-shaped inner side surface of the first limiting portion, and the first gap is connected to the elliptical first hole.

[0011] According to another exemplary embodiment of the present invention, the second elastic arm and the second limiting portion respectively have an arc-shaped inner side surface and an arc-shaped outer side surface opposite to each other in the lateral direction of the electrical connection terminal; an elliptical second hole is defined between the second elastic arm and the arc-shaped inner side surface of the second limiting portion, and the second gap is connected to the elliptical second hole.

[0012] According to another exemplary embodiment of the present invention, the arcuate outer side surface of the first elastic arm smoothly transitions with the arcuate outer side surface of the second limiting portion and extends along an S-shaped path; the arcuate outer side surface of the second elastic arm smoothly transitions with the arcuate outer side surface of the first limiting portion and extends along an S-shaped path.

[0013] According to another exemplary embodiment of the present invention, the first rigid portion, the second rigid portion, the first elastic arm, the second elastic arm, the first limiting portion and the second limiting portion respectively have a first surface and a second surface opposite to each other in the thickness direction of the electrical connection terminal; the first surfaces of the first rigid portion, the second rigid portion, the first elastic arm, the second elastic arm, the first limiting portion and the second limiting portion are flush or approximately flush; the second surfaces of the first rigid portion, the second rigid portion, the first elastic arm, the second elastic arm, the first limiting portion and the second limiting portion are flush or approximately flush.

[0014] According to another exemplary embodiment of the present invention, the first rigid part and the second rigid part respectively have a first side surface and a second side surface that are opposite to each other in the lateral direction of the electrical connection terminal; the first side surface of the first rigid part is flush or substantially flush with the first side surface of the second rigid part, and the second side surface of the first rigid part is flush or substantially flush with the second side surface of the second rigid part.

[0015] According to another exemplary embodiment of the present invention, the arcuate outer side surface of the first elastic arm smoothly transitions with the first side surface of the first rigid part and arches outward relative to the first side surface of the first rigid part; the arcuate outer side surface of the second elastic arm smoothly transitions with the second side surface of the second rigid part and arches outward relative to the second side surface of the second rigid part.

[0016] According to another exemplary embodiment of the present invention, the soldering portion is block-shaped and has a flat soldering bottom surface, and the soldering bottom surface is suitable for being soldered to the surface of the first circuit board in a surface mounting manner.

[0017] According to another exemplary embodiment of the present invention, the press-fit portion includes a pair of arc frames, both ends of which are respectively connected to form an elliptical frame body; the elliptical frame body of the press-fit portion is suitable for being plugged into the socket on the second circuit board in an interference fit manner.

[0018] According to another exemplary embodiment of the present invention, the press-fit portion also includes a plurality of first connecting ribs and a plurality of second connecting ribs connected between the pair of arc-shaped frames; the first connecting ribs and the second connecting ribs are alternately arranged in the longitudinal direction of the electrical connecting terminal; the first connecting ribs and the second connecting ribs are arc-shaped and arched in opposite directions in the thickness direction of the electrical connecting terminal.

[0019] According to another exemplary embodiment of the present invention, the press-fit portion further includes a guide end, which is located at an end of the elliptical frame body opposite to the second rigid portion and is used to guide the elliptical frame body to be inserted into the insertion hole on the second circuit board.

[0020] According to another aspect of the present invention, an electrical connection device is provided. The electrical connection device comprises: a housing; a first circuit board disposed in the housing; and the aforementioned electrical connection terminal disposed in the housing and having a welding portion welded to the first circuit board. The press-fit portion of the electrical connection terminal is exposed from the housing and is used to be press-fitted into a socket on a second circuit board.

[0021] According to another aspect of the present invention, an electrical connection terminal is provided. The electrical connection terminal includes: a welding portion, located at one longitudinal end of the electrical connection terminal; a press-fit portion, located at the other longitudinal end of the electrical connection terminal; and an elastic portion, located between the welding portion and the press-fit portion. The elastic portion includes: a first elastic arm, one end of which is connected to the welding portion; a second elastic arm, one end of which is connected to the press-fit portion; a first limiting portion, connected to the other ends of the first elastic arm and the second elastic arm and extending toward the welding portion; and a second limiting portion, connected to the other ends of the first elastic arm and the second elastic arm and extending toward the press-fit portion, the first limiting portion and the second limiting portion being suitable for respectively abutting against the end faces of the welding portion and the press-fit portion to limit the elastic deformation of the first elastic arm and the second elastic arm in the longitudinal direction of the electrical connection terminal.

[0022] In the aforementioned various exemplary embodiments according to the present invention, the first limiting portion and the second limiting portion extend in opposite directions in the longitudinal direction of the electrical connection terminal, thereby increasing the distance between the end surfaces of the first limiting portion and the second limiting portion, so that the first elastic arm and the second elastic arm have a larger total length in the longitudinal direction, which makes the elastic portion of the electrical connection terminal have better elastic buffering performance and can absorb larger installation position errors.

[0023] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective schematic diagram showing an electrical connection terminal according to an exemplary embodiment of the present invention;

[0025] Figure 2 A schematic plan view showing an electrical connection terminal according to an exemplary embodiment of the present invention;

[0026] Figure 3 A schematic diagram showing an electrical connection terminal, a first circuit board, and a second circuit board according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0028] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0029] According to an overall technical concept of the present invention, an electrical connection terminal is provided. The electrical connection terminal includes: a welding portion, located at one longitudinal end of the electrical connection terminal; a press-fit portion, located at the other longitudinal end of the electrical connection terminal; a first rigid portion, one end of which is connected to the welding portion; a second rigid portion, one end of which is connected to the press-fit portion; and an elastic portion. The elastic portion includes: a first elastic arm, one end of which is connected to the other end of the first rigid portion; a second elastic arm, one end of which is connected to the other end of the second rigid portion; a first limiting portion, connected to the other ends of the first elastic arm and the second elastic arm and extending toward the first rigid portion; a second limiting portion, connected to the other ends of the first elastic arm and the second elastic arm and extending toward the second rigid portion. The first limiting portion and the second limiting portion are suitable for respectively abutting against the end faces of the other ends of the first rigid portion and the second rigid portion to limit the elastic deformation of the first elastic arm and the second elastic arm in the longitudinal direction of the electrical connection terminal.

[0030] According to another general technical concept of the present invention, an electrical connection device is provided. The electrical connection device comprises: a housing; a first circuit board disposed in the housing; and the aforementioned electrical connection terminal disposed in the housing and having a welding portion welded to the first circuit board. The press-fit portion of the electrical connection terminal is exposed from the housing and is used to be press-fitted into a socket on a second circuit board.

[0031] According to another general technical concept of the present invention, an electrical connection terminal is provided. The electrical connection terminal includes: a welding portion, located at one longitudinal end of the electrical connection terminal; a press-fit portion, located at the other longitudinal end of the electrical connection terminal; and an elastic portion, located between the welding portion and the press-fit portion. The elastic portion includes: a first elastic arm, one end of which is connected to the welding portion; a second elastic arm, one end of which is connected to the press-fit portion; a first limiting portion, connected to the other end of the first elastic arm and the second elastic arm and extending toward the welding portion; and a second limiting portion, connected to the other end of the first elastic arm and the second elastic arm and extending toward the press-fit portion, the first limiting portion and the second limiting portion being suitable for respectively abutting against the end faces of the welding portion and the press-fit portion to limit the elastic deformation of the first elastic arm and the second elastic arm in the longitudinal direction of the electrical connection terminal.

[0032] Figure 1A three-dimensional schematic diagram showing an electrical connection terminal 1 according to an exemplary embodiment of the present invention; Figure 2 A schematic plan view showing an electrical connection terminal 1 according to an exemplary embodiment of the present invention; Figure 3 A schematic diagram showing an electrical connection terminal 1 , a first circuit board 2 , and a second circuit board 3 according to an exemplary embodiment of the present invention.

[0033] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, an electrical connection terminal 1 is disclosed. The electrical connection terminal 1 includes: a welding portion 11, a press-fit portion 12, a first rigid portion 14, a second rigid portion 15 and an elastic portion 13. The welding portion 11 is located at one longitudinal end of the electrical connection terminal 1. The press-fit portion 12 is located at the other longitudinal end of the electrical connection terminal 1. One end of the first rigid portion 14 is connected to the welding portion 11. One end of the second rigid portion 15 is connected to the press-fit portion 12. The elastic portion 13 includes: a first elastic arm 131, a second elastic arm 132, a first limiting portion 133 and a second limiting portion 134. One end of the first elastic arm 131 is connected to the other end of the first rigid portion 14. One end of the second elastic arm 132 is connected to the other end of the second rigid portion 15. The first limiting portion 133 is connected to the other ends of the first elastic arm 131 and the second elastic arm 132 and extends toward the first rigid portion 14 along the longitudinal direction Y of the electrical connection terminal 1. The second limiting portion 134 is connected to the other end of the first elastic arm 131 and the second elastic arm 132 and extends toward the second rigid portion 15 along the longitudinal direction Y of the electrical connection terminal 1. The first limiting portion 133 and the second limiting portion 134 are adapted to abut against the end surfaces of the other ends of the first rigid portion 14 and the second rigid portion 15, respectively, to limit the elastic deformation of the first elastic arm 131 and the second elastic arm 132 in the longitudinal direction Y of the electrical connection terminal 1. In this way, the first elastic arm 131 and the second elastic arm 132 can be prevented from being plastically deformed in the longitudinal direction when the press-fit portion 12 of the electrical connection terminal 1 is press-fitted.

[0034] like Figures 1 to 3 As shown, in the illustrated embodiment, the first elastic arm 131 and the second elastic arm 132 are arc-shaped and arch toward opposite directions in the transverse direction X of the electrical connection terminal 1 .

[0035] like Figures 1 to 3 As shown, in the illustrated embodiment, the first elastic arm 131 is located on one side of the electrical connection terminal 1 in the transverse direction X. The second elastic arm 132 is located on the other side of the electrical connection terminal 1 in the transverse direction X.

[0036] like Figures 1 to 3 As shown, in the illustrated embodiment, the first limiting portion 133 extends along the longitudinal direction Y of the electrical connection terminal 1 toward the end surface of the first rigid portion 14 . The second limiting portion 134 extends along the longitudinal direction Y of the electrical connection terminal 1 toward the end surface of the second rigid portion 15 .

[0037] like Figures 1 to 3 As shown, in the illustrated embodiment, when the electrical connection terminal 1 is in a natural state without being subjected to force, a first gap 137 is provided between the end face of the first limiting portion 133 and the end face of the first rigid portion 14 , and a second gap 138 is provided between the end face of the second limiting portion 134 and the end face of the second rigid portion 15 .

[0038] like Figures 1 to 3 As shown, in the illustrated embodiment, the first gap 137 is set to be equal to, slightly smaller than, or slightly larger than the second gap 138. In the illustrated embodiment, in the process of press-fitting the press-fit portion 12 of the electrical connection terminal 1 into the insertion hole 301 on the second circuit board 3, the first limiting portion 133 and the second limiting portion 134 respectively abut against the end surface of the other end of the first rigid portion 14 and the second rigid portion 15 to limit the elastic deformation amount of the first elastic arm 131 and the second elastic arm 132 in the longitudinal direction Y of the electrical connection terminal 1.

[0039] like Figures 1 to 3 As shown, in the illustrated embodiment, the first elastic arm 131 and the first limiting portion 133 respectively have an arc-shaped inner side surface and an arc-shaped outer side surface that are opposite to each other in the transverse direction X of the electrical connection terminal 1; an elliptical first hole 135 is defined between the first elastic arm 131 and the arc-shaped inner side surface of the first limiting portion 133, and the first gap 137 is connected to the elliptical first hole 135.

[0040] like Figures 1 to 3 As shown, in the illustrated embodiment, the second elastic arm 132 and the second limiting portion 134 respectively have an arc-shaped inner side surface and an arc-shaped outer side surface opposite to each other in the transverse direction X of the electrical connection terminal 1; an elliptical second hole 136 is defined between the arc-shaped inner side surfaces of the second elastic arm 132 and the second limiting portion 134, and the second gap 138 is connected to the elliptical second hole 136.

[0041] However, the present invention is not limited to the illustrated embodiment. For example, the shapes of the first hole 135 and the second hole 136 are not limited to elliptical shapes, but may also be circular or other suitable shapes.

[0042] like Figures 1 to 3 As shown, in the illustrated embodiment, the arcuate outer side surface of the first elastic arm 131 smoothly transitions with the arcuate outer side surface of the second limiting portion 134 and extends along an S-shaped path; the arcuate outer side surface of the second elastic arm 132 smoothly transitions with the arcuate outer side surface of the first limiting portion 133 and extends along the S-shaped path.

[0043] like Figures 1 to 3As shown, in the illustrated embodiment, the first rigid portion 14, the second rigid portion 15, the first elastic arm 131, the second elastic arm 132, the first limiting portion 133 and the second limiting portion 134 respectively have a first surface and a second surface opposite to each other in the thickness direction Z of the electrical connection terminal 1; the first surfaces of the first rigid portion 14, the second rigid portion 15, the first elastic arm 131, the second elastic arm 132, the first limiting portion 133 and the second limiting portion 134 are flush or approximately flush; the second surfaces of the first rigid portion 14, the second rigid portion 15, the first elastic arm 131, the second elastic arm 132, the first limiting portion 133 and the second limiting portion 134 are flush or approximately flush.

[0044] like Figures 1 to 3 As shown, in the illustrated embodiment, the first rigid portion 14 and the second rigid portion 15 respectively have a first side surface and a second side surface that are opposite to each other in the transverse direction X of the electrical connection terminal 1; the first side surface of the first rigid portion 14 is flush or substantially flush with the first side surface of the second rigid portion 15, and the second side surface of the first rigid portion 14 is flush or substantially flush with the second side surface of the second rigid portion 15. That is, in the illustrated embodiment, the first rigid portion 14 and the second rigid portion 15 have the same or substantially the same width and are flush or substantially flush in the longitudinal direction Y.

[0045] like Figures 1 to 3 As shown, in the illustrated embodiment, the arcuate outer side surface of the first elastic arm 131 smoothly transitions with the first side surface of the first rigid portion 14 and arches outward relative to the first side surface of the first rigid portion 14; the arcuate outer side surface of the second elastic arm 132 smoothly transitions with the second side surface of the second rigid portion 15 and arches outward relative to the second side surface of the second rigid portion 15.

[0046] like Figures 1 to 3 As shown, in the illustrated embodiment, the soldering portion 11 is block-shaped and has a flat soldering bottom surface 11 a , and the soldering bottom surface 11 a is suitable for being soldered to the surface of the first circuit board 2 in a surface mounting manner.

[0047] like Figures 1 to 3 As shown, in the illustrated embodiment, the press-fit portion 12 includes a pair of arc frames 121, and the two ends of the pair of arc frames 121 are respectively connected to form an elliptical frame body 120; the elliptical frame body 120 of the press-fit portion 12 is suitable for being inserted into the socket 301 on the second circuit board 3 in an interference fit manner.

[0048] like Figures 1 to 3As shown, in the illustrated embodiment, the press-fit portion 12 also includes a plurality of first connecting ribs 12a and a plurality of second connecting ribs 12b connected between a pair of arc-shaped frames 121; the first connecting ribs 12a and the second connecting ribs 12b are alternately arranged in the longitudinal direction Y of the electrical connecting terminal 1; the first connecting ribs 12a and the second connecting ribs 12b are arc-shaped and arch in opposite directions in the thickness direction Z of the electrical connecting terminal 1.

[0049] like Figures 1 to 3 As shown, in the illustrated embodiment, the press-fit portion 12 further includes a guide end 122 , which is located at an end of the elliptical frame 120 opposite to the second rigid portion 15 and is used to guide the elliptical frame 120 to be inserted into the insertion hole 301 on the second circuit board 3 .

[0050] like Figures 1 to 3 As shown, in the illustrated embodiment, the two arc-shaped elastic arms 131, 132 are arched in opposite directions in the transverse direction X, which can effectively increase the length and elasticity of the arc-shaped elastic arms 131, 132. The two limiting portions 133, 134 extend in opposite directions in the longitudinal direction Y, increasing the distance between the contact end surfaces of the two limiting portions 133, 134, thereby further increasing the length and elasticity of the arc-shaped elastic arms 131, 132. Therefore, in the illustrated embodiment, the elastic portion 13 of the electrical connection terminal 1 has better elastic buffering performance and can absorb a larger installation position error, so that the press-fit portion 12 of the electrical connection terminal 1 can be more easily press-fitted into the socket 301 on the second circuit board 3 without causing damage to the first circuit board 2.

[0051] like Figures 1 to 3 As shown, in another exemplary embodiment of the present invention, an electrical connection device is also disclosed. The electrical connection device includes: a housing (not shown); a first circuit board 2, which is arranged in the housing; and the aforementioned electrical connection terminal 1. The electrical connection terminal 1 is arranged in the housing and its welding portion 11 is welded to the first circuit board 2. The press-fit portion 12 of the electrical connection terminal 1 is exposed from the housing and is used to be press-fitted into the socket 301 on the second circuit board 3.

[0052] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, the first circuit board 2 may be a ceramic copper clad laminate, and the second circuit board 3 may be a printed circuit board.

[0053] Please note that the electrical connection terminal of the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, at least one of the first rigid portion 14 and the second rigid portion 15 may be removed. In another exemplary embodiment of the present invention, an electrical connection terminal 1 is also disclosed. The electrical connection terminal 1 includes: a welding portion 11, located at one longitudinal end of the electrical connection terminal 1; a press-fit portion 12, located at the other longitudinal end of the electrical connection terminal 1; and an elastic portion 13, located between the welding portion 11 and the press-fit portion 12. The elastic portion 13 includes: a first elastic arm 131, one end of which is connected to the welding portion 11; a second elastic arm 132, one end of which is connected to the press-fit portion 12; a first limiting portion 133, connected to the other ends of the first elastic arm 131 and the second elastic arm 132 and extending toward the welding portion 11; and a second limiting portion 134, connected to the other ends of the first elastic arm 131 and the second elastic arm 132 and extending toward the press-fit portion 12. The first limiting portion 133 and the second limiting portion 134 are adapted to respectively abut against end surfaces of the welding portion 11 and the press-fit portion 12 to limit elastic deformation of the first elastic arm 131 and the second elastic arm 132 in the longitudinal direction Y of the electrical connection terminal 1 .

[0054] Those skilled in the art will appreciate that the embodiments described above are exemplary and may be improved upon by those skilled in the art. The structures described in the various embodiments may be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present invention.

[0055] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0056] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

[0057] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. An electrical connection terminal, characterized in that: include: A welding portion (11) located at a longitudinal end of the electrical connection terminal (1); A press-fit portion (12) located at the other longitudinal end of the electrical connection terminal (1); A first rigid portion (14), one end of which is connected to the welding portion (11); A second rigid portion (15), one end of which is connected to the press-fit portion (12); and The elastic part (13) comprises: A first elastic arm (131), one end of which is connected to the other end of the first rigid part (14); A second elastic arm (132), one end of which is connected to the other end of the second rigid part (15); A first limiting portion (133) connected to the other end of the first elastic arm (131) and the second elastic arm (132) and extending toward the first rigid portion (14); and A second limiting portion (134) is connected to the other end of the first elastic arm (131) and the second elastic arm (132) and extends toward the second rigid portion (15), and the first limiting portion (133) and the second limiting portion (134) are suitable for respectively abutting against the end surface of the other end of the first rigid portion (14) and the second rigid portion (15) to limit the elastic deformation of the first elastic arm (131) and the second elastic arm (132) in the longitudinal direction (Y) of the electrical connection terminal (1).

2. The electrical connection terminal according to claim 1, characterized in that: The first elastic arm (131) and the second elastic arm (132) are arc-shaped and arch in opposite directions in the transverse direction (X) of the electrical connection terminal (1).

3. The electrical connection terminal according to claim 2, characterized in that: The first elastic arm (131) is located on one side of the electrical connection terminal (1) in the transverse direction (X); and The second elastic arm (132) is located on the other side of the electrical connection terminal (1) in the transverse direction (X).

4. The electrical connection terminal according to claim 1, characterized in that: The first limiting portion (133) extends along the longitudinal direction (Y) of the electrical connection terminal (1) toward the end surface of the first rigid portion (14); The second limiting portion (134) extends along the longitudinal direction (Y) of the electrical connection terminal (1) toward the end surface of the second rigid portion (15).

5. The electrical connection terminal according to claim 4, characterized in that: When the electrical connection terminal (1) is in a natural state without being subjected to force, a first gap (137) is provided between the end surface of the first limiting portion (133) and the end surface of the first rigid portion (14), and a second gap (138) is provided between the end surface of the second limiting portion (134) and the end surface of the second rigid portion (15).

6. The electrical connection terminal according to claim 5, characterized in that: The first gap (137) is set to be equal to, slightly smaller than, or slightly larger than the second gap (138).

7. The electrical connection terminal according to claim 5, characterized in that: The first elastic arm (131) and the first limiting portion (133) respectively have an arc-shaped inner side surface and an arc-shaped outer side surface which are opposite to each other in the transverse direction (X) of the electrical connection terminal (1); An elliptical first hole (135) is defined between the first elastic arm (131) and the arc-shaped inner side surface of the first limiting portion (133), and the first gap (137) is connected to the elliptical first hole (135).

8. The electrical connection terminal according to claim 7, characterized in that: The second elastic arm (132) and the second limiting portion (134) respectively have an arc-shaped inner side surface and an arc-shaped outer side surface that are opposite to each other in the transverse direction (X) of the electrical connection terminal (1); An elliptical second hole (136) is defined between the second elastic arm (132) and the arc-shaped inner side surface of the second limiting portion (134), and the second gap (138) is in communication with the elliptical second hole (136).

9. The electrical connection terminal according to claim 8, characterized in that: The arc-shaped outer side surface of the first elastic arm (131) and the arc-shaped outer side surface of the second limiting portion (134) smoothly transition and extend along an S-shaped path; The arc-shaped outer side surface of the second elastic arm (132) and the arc-shaped outer side surface of the first limiting portion (133) smoothly transition and extend along an S-shaped path.

10. The electrical connection terminal according to claim 1, characterized in that: The first rigid portion (14), the second rigid portion (15), the first elastic arm (131), the second elastic arm (132), the first limiting portion (133) and the second limiting portion (134) respectively have a first surface and a second surface that are opposite to each other in the thickness direction (Z) of the electrical connection terminal (1); The first surfaces of the first rigid portion (14), the second rigid portion (15), the first elastic arm (131), the second elastic arm (132), the first limiting portion (133) and the second limiting portion (134) are flush or substantially flush; The second surfaces of the first rigid portion (14), the second rigid portion (15), the first elastic arm (131), the second elastic arm (132), the first limiting portion (133) and the second limiting portion (134) are flush or substantially flush.

11. The electrical connection terminal according to claim 10, characterized in that: The first rigid portion (14) and the second rigid portion (15) respectively have a first side surface and a second side surface that are opposite to each other in a transverse direction (X) of the electrical connection terminal (1); The first side surface of the first rigid part (14) is flush or substantially flush with the first side surface of the second rigid part (15), and the second side surface of the first rigid part (14) is flush or substantially flush with the second side surface of the second rigid part (15).

12. The electrical connection terminal according to claim 11, characterized in that: The arc-shaped outer side surface of the first elastic arm (131) smoothly transitions with the first side surface of the first rigid part (14) and arches outward relative to the first side surface of the first rigid part (14); The arc-shaped outer side surface of the second elastic arm (132) smoothly transitions with the second side surface of the second rigid part (15) and arches outward relative to the second side surface of the second rigid part (15).

13. The electrical connection terminal according to claim 1, characterized in that: The welding portion (11) is block-shaped and has a flat welding bottom surface (11a), and the welding bottom surface (11a) is suitable for being welded to the surface of the first circuit board (2) in a surface mounting manner.

14. The electrical connection terminal according to claim 1, characterized in that: The press-fit portion (12) comprises a pair of arc-shaped frames (121), and two ends of the pair of arc-shaped frames (121) are respectively connected to form an elliptical frame body (120); The elliptical frame (120) of the press-fit portion (12) is suitable for being plugged into the plug hole (301) on the second circuit board (3) in an interference fit manner.

15. The electrical connection terminal according to claim 14, characterized in that: The press-fit portion (12) further comprises a plurality of first connecting ribs (12a) and a plurality of second connecting ribs (12b) connected between the pair of arc-shaped frames (121); The first connecting ribs (12a) and the second connecting ribs (12b) are alternately arranged in the longitudinal direction (Y) of the electrical connecting terminal (1); The first connecting rib (12a) and the second connecting rib (12b) are arc-shaped and arch in opposite directions in the thickness direction (Z) of the electrical connecting terminal (1).

16. The electrical connection terminal according to claim 14, characterized in that: The press-fit portion (12) further comprises a guide end (122), which is located at an end of the elliptical frame (120) opposite to the second rigid portion (15) and is used to guide the elliptical frame (120) to be inserted into the insertion hole (301) on the second circuit board (3).

17. An electrical connection device, characterized in that: include: case; A first circuit board (2) is arranged in the housing; and The electrical connection terminal (1) according to any one of claims 1 to 16, is arranged in the housing and its welding portion (11) is welded to the first circuit board (2), The press-fit portion (12) of the electrical connection terminal (1) is exposed from the housing and is used for being press-fitted into the insertion hole (301) on the second circuit board (3).

18. An electrical connection terminal, characterized in that: include: A welding portion (11) located at a longitudinal end of the electrical connection terminal (1); A press-fit portion (12) located at the other longitudinal end of the electrical connection terminal (1); and The elastic portion (13) is located between the welding portion (11) and the press-fit portion (12), and the elastic portion (13) comprises: A first elastic arm (131), one end of which is connected to the welding portion (11); A second elastic arm (132), one end of which is connected to the press-fit portion (12); A first limiting portion (133) connected to the other end of the first elastic arm (131) and the second elastic arm (132) and extending toward the welding portion (11); and A second limiting portion (134) is connected to the other end of the first elastic arm (131) and the second elastic arm (132) and extends toward the press-fit portion (12). The first limiting portion (133) and the second limiting portion (134) are suitable for respectively abutting against the end faces of the welding portion (11) and the press-fit portion (12) to limit the elastic deformation of the first elastic arm (131) and the second elastic arm (132) in the longitudinal direction (Y) of the electrical connection terminal (1).

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