Contacts, connectors, and contact mounting boards

Abstract

The present invention provides a contact that can shorten the current path while suppressing the deterioration of spring characteristics when the cantilevered elastic deformation portion undergoes elastic deformation. [Solution] The contact 10 has a mounting portion 12, a cantilever-shaped elastic deformation portion 14, and an extension portion 16. The elastic deformation portion 14 is provided with a first contact portion 421 and a second contact portion 423 located between the first contact portion 421 and the mounting portion 12 in the vertical direction. The extension portion 16 is provided with a third contact portion 601. As the elastic deformation portion 14 elastically deforms, the second contact portion 423 and the third contact portion 601 come into contact with each other in the lateral direction. In the contact state where the second contact portion 423 and the third contact portion 601 are in contact with each other, the length of the second current path from the first contact portion 421 to the mounting portion 12 via the second contact portion 423 and the third contact portion 601 is shorter than the length of the first current path from the first contact portion 421 to the mounting portion 12 via the elastic deformation portion 14.

Description

Technical Field

[0001] The present invention relates to contacts. The present invention also relates to a connector including contacts and a contact mounting substrate including contacts.

Background Art

[0002] Citation Document 1 discloses an electrical connector including contacts.

[0003] Referring to FIGS. 19 and 20, a contact 90 included in the electrical connector disclosed in Citation Document 1 includes an elastic deformation portion 92. The elastic deformation portion 92 has a first contact portion 921 and a second contact portion 923.

[0004] As understood from FIGS. 19 and 20, when an object to be connected (not shown) contacts the first contact portion 921 from above and pushes the first contact portion 921 downward, the elastic deformation portion 92 elastically deforms. As a result, the second contact portion 923 moves downward and contacts the third contact portion 94. In the contact state where the second contact portion 923 contacts the third contact portion 94, two current paths are formed in the contact 90 from the first contact portion 921 to the soldering portion 96. One of the current paths is a first current path that reaches the soldering portion 96 via the curved portion 925 from the first contact portion 921. The remaining one of the current paths is a second current path that reaches the soldering portion 96 via the second contact portion 923 and the third contact portion 94 from the first contact portion 921. And the length of the second current path is shorter than the length of the first current path.

[0005] Thus, the contact 90 of Citation Document 1 realizes a soft spring by increasing the length of the elastic deformation portion 92, and realizes shortening of the current path from the first contact portion 921 to the soldering portion 96 by providing the second contact portion 923 in the elastic deformation portion 92.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2023-75527 [Overview of the project] [Problems that the invention aims to solve]

[0007] In the contact 90 of Reference 1, the elastically deformable portion 92 is formed in a cantilever shape and acts as a soft spring. However, when the second contact portion 923 comes into contact with the third contact portion 94, the elastically deformable portion 92 acts as a cantilevered spring, and its spring characteristics deteriorate significantly. Therefore, the contact 90 of Reference 1 has the disadvantage that the elastically deformable portion 92 is prone to plastic deformation or breakage when it undergoes elastic deformation.

[0008] The present invention aims to provide a contact having a cantilever-shaped elastic deformation portion that can shorten the current path while suppressing the deterioration of the spring characteristics when the elastic deformation portion is elastically deformed. The present invention also aims to provide a connector and a contact mounting substrate having such a contact. [Means for solving the problem]

[0009] The present invention provides a first contact that electrically connects a first connected portion of a first substrate and a second connected portion of a second substrate, which are located on the lower and upper sides in the vertical direction, respectively. The contact has a mounting portion connected to the first connected portion, a cantilever-shaped elastic deformation portion extending from the mounting portion, and an extension portion extending from the mounting portion. The elastically deformable portion is provided with a first contact portion that contacts the second connected portion, and a second contact portion located between the first contact portion and the mounting portion in the vertical direction. The extended portion is provided with a third contact portion. When the first contact portion contacts the second connected portion and the elastically deformable portion undergoes elastic deformation, the second contact portion and the third contact portion come into contact with each other in the lateral direction perpendicular to the vertical direction. In a contact state where the second contact portion and the third contact portion are in contact with each other, the length of the second current path from the first contact portion to the mounting portion via the second and third contact portions is shorter than the length of the first current path from the first contact portion to the mounting portion via the elastic deformation portion. Provide contact information.

[0010] Furthermore, the present invention provides a second contact, which is the first contact, The second contact portion is provided at the free end of the elastically deformable portion. Provide contact information.

[0011] Furthermore, the present invention also includes a third contact, which is a second contact, In the front-to-back direction, which is perpendicular to both the vertical and horizontal directions, the first contact portion is located between the mounting portion and the second contact portion. Provide contact information.

[0012] Furthermore, the present invention also includes a fourth contact, which is a third contact, The aforementioned elastic deformation portion further comprises a restricting portion, The restricting portion is located above the second contact portion in the vertical direction and restricts the second contact portion from moving upward beyond the restricting portion. Provide contact information.

[0013] Furthermore, the present invention also includes a fifth contact, which is a second contact, The free end of the elastically deformable portion is branched into two branches. There are two of the second contact portions, each provided on the branch portion. The two second contact portions are located apart from each other in the lateral direction. In the aforementioned contact state, the third contact portion is sandwiched between the two second contact portions. Provide contact information.

[0014] Further, the present invention provides, as a sixth contact, a fifth contact, wherein the size of the third contact portion in the lateral direction decreases toward the tip, and in the contact state, the distance between the two branch portions increases toward the tip. contact is provided.

[0015] Further, the present invention provides, as a seventh contact, a first contact, wherein the elastic deformation portion further has a spring intermediate portion, the first contact portion is located between the spring intermediate portion and the second contact portion, and in the contact state, the spring intermediate portion contacts the mounting portion, and a third current path is further formed from the first contact portion through the spring intermediate portion to the mounting portion. contact is provided.

[0016] Further, the present invention provides, as an eighth contact, a first contact, wherein the contact further includes a pair of anti-deformation walls extending from the mounting portion, the anti-deformation walls are located on both sides of the elastic deformation portion in the lateral direction, and when viewed along the lateral direction, the anti-deformation walls partially overlap the elastic deformation portion. contact is provided.

[0017] Further, the present invention provides a first connector including any one of the first contact to the eighth contact and a holding member for holding the contact. connector is provided.

[0018] Furthermore, the present invention provides a first contact mounting substrate including a plurality of any one of the first contact to the eighth contact and a substrate, wherein the contacts are arranged on the substrate. contact mounting substrate is provided. [Effects of the Invention]

[0019] In a contact according to one aspect of the present invention, the second contact portion provided in the elastically deformable portion and the third contact portion provided in the stretching portion come into contact with each other in the lateral direction when the elastically deformable portion is deformed. This suppresses the deterioration of the spring characteristics when the elastically deformable portion is elastically deformed and shortens the current path. [Brief explanation of the drawing]

[0020] [Figure 1] This is a perspective view showing a contact according to one embodiment of the present invention. The contact is in its initial state. [Figure 2] Figure 1 is a side view showing the contact, a first substrate having a first connected portion, and a second substrate having a second connected portion. [Figure 3] This is a plan view showing the contact in Figure 1. [Figure 4] Figure 3 is a cross-sectional view along line AA showing the contacts. [Figure 5] This is a bottom view showing the contacts in Figure 1. [Figure 6] This is a front view showing the contacts in Figure 1. [Figure 7] This is a rear view showing the contacts in Figure 1. [Figure 8] Figure 1 is a perspective view showing the contact. The contact is in contact. [Figure 9] Figure 8 is a side view showing the contact. [Figure 10] Figure 8 is a plan view showing the contacts. [Figure 11] Figure 10 is a cross-sectional view along line BB showing the contacts. [Figure 12] Figure 8 is a bottom view showing the contacts. [Figure 13] Figure 8 is a front view showing the contacts. [Figure 14] Figure 8 is a rear view showing the contacts. [Figure 15]Figure 1 is a perspective view showing a contact mounting board with multiple contacts. [Figure 16] Figure 1 is a plan view showing a connector comprising multiple contacts and a retaining member that holds these contacts. [Figure 17] Figure 15 is a front view showing the connector. [Figure 18] Figure 15 is a bottom view showing the connector. [Figure 19] This is a perspective view showing the contact disclosed in Patent Document 1. [Figure 20] Figure 15 is a partially cross-sectional view showing an electrical connector with contacts. [Modes for carrying out the invention]

[0021] Referring to Figure 1, the contact 10 according to one embodiment of the present invention has a generally rectangular parallelepiped shape with a relatively small size in the vertical direction. An upper opening 44 is provided in the upper center of the contact 10. The free end 48 of the elastically deformable portion 14, which will be described later, partially protrudes upward through the upper opening 44. In this embodiment, the vertical direction is the Z direction. The +Z direction is upward, and the -Z direction is downward.

[0022] As can be seen from Figures 3 and 5 through 7, the contact 10 has a symmetrical shape with respect to a plane (plane of symmetry) that passes through the center of the contact 10 in the lateral direction perpendicular to the vertical direction and is parallel to the vertical direction. In this embodiment, the lateral direction is the Y direction. However, the present invention is not limited thereto. The present invention can be established using only one side of the two parts obtained by cutting the contact 10 with respect to the plane of symmetry, and it does not need to have a symmetrical shape.

[0023] Referring to Figure 2, contact 10 is a contact that electrically connects the first connected portion 701 of the first substrate and the second connected portion 721 of the second substrate, which are located on the lower and upper sides in the vertical direction. The first connected portion 701 is, for example, a connection pad formed on the upper surface of the first substrate 70. The second connected portion 721 is, for example, a contact pad, terminal, or contact formed on the lower surface of the second substrate 72. Contact 10 is, for example, mounted on the first substrate 70 and fixedly connected to the first connected portion 701. Contact 10 also approaches the second substrate 72 and makes contact connection with the second connected portion 721.

[0024] Referring to Figures 3 and 4, the contact 10 has a mounting portion 12, an elastically deformable portion 14, and an elongated portion 16. The contact 10 is formed, for example, by cutting and bending a single metal plate.

[0025] As can be seen from Figures 4 and 5, the mounting portion 12 is located at the bottom rear of the contact 10. When viewed along the vertical direction, the mounting portion 12 is a roughly rectangular shape that is elongated horizontally and occupies approximately one-third of the bottom surface of the contact 10. As can be seen from Figure 2, the mounting portion 12 is connected to the first connected portion 701 when in use.

[0026] As shown in Figures 4 and 5, both the elastically deformable portion 14 and the elongated portion 16 extend from the mounting portion 12. In this embodiment, the elastically deformable portion 14 extends forward from the mounting portion 12. Also in this embodiment, the elongated portion 16 extends forward from the mounting portion 12 and then diagonally upward and forward. In this embodiment, the front-rear direction is the direction perpendicular to both the up-down direction and the width direction, i.e., the X direction. The +X direction is forward, and the -X direction is backward.

[0027] As shown in Figures 5 and 6, the elastically deformable portion 14 has a lower opening 46. When viewed from below along the vertical direction, the elongated portion 16 is partially located within the lower opening 46. In this embodiment, the elastically deformable portion 14 and the elongated portion 16 share a common base. In other words, in this embodiment, the third contact portion 601 of the elongated portion 16, described later, branches off from the elastically deformable portion 14. However, the present invention is not limited thereto. In the present invention, the elastically deformable portion 14 and the elongated portion 16 may be completely separate from each other.

[0028] As can be seen from Figure 4, the elastically deformable section 14 is formed in a cantilevered shape. More specifically, the elastically deformable section 14 has a first horizontal section 401, a first vertical section 403, a second horizontal section 405, a second vertical section 407, a third horizontal section 409, a first inclined section 411, a second inclined section 413, and a fourth horizontal section 415. In this specification, the terms "horizontal section" and "vertical section" are for convenience only and do not necessarily mean that they are perpendicular or parallel to the vertical direction. In other words, in this specification, a "horizontal section" may have an inclination with respect to a direction perpendicular to the vertical direction, and a "vertical section" may have an inclination with respect to the vertical direction.

[0029] As shown in Figure 4, the first horizontal section 401 extends forward from the front edge of the mounting section 12. The first vertical section 403 extends upward from the front edge of the first horizontal section 401. The second horizontal section 405 extends rearward from the upper edge of the first vertical section 403. The second vertical section 407 extends downward from the rear edge of the second horizontal section 405. The third horizontal section 409 extends forward from the lower edge of the second vertical section 407. The first inclined section 411 extends diagonally upward and forward from the front edge of the third horizontal section 409. The second inclined section 413 extends diagonally downward and forward from the front edge of the first inclined section 411. The fourth horizontal section 415 extends forward from the front edge of the second inclined section 413.

[0030] As shown in Figure 4, the third horizontal section 409 is located above and away from the mounting section 12. The first inclined section 411 and the second inclined section 413 are each located partially above the second horizontal section 405 in the vertical direction. To enable this, the second horizontal section 405 is provided with the upper opening 44 described above.

[0031] As can be seen from Figures 3, 4, and 7, the free end 48 of the elastically deformable portion 14 branches into two branch portions 481. In this embodiment, the free end 48 of the elastically deformable portion 14 refers to the area from near the rear end of the second horizontal portion 405 to the front end of the fourth horizontal portion 415.

[0032] As can be seen from Figures 2 to 4, in each branch portion 481, the boundary portion between the first inclined portion 411 and the second inclined portion 413 constitutes the first contact portion 421. Thus, the elastically deformable portion 14 is provided with a first contact portion 421 that contacts the second connected portion 721. In this embodiment, the first contact portion 421 is located in the front-rear direction between the mounting portion 12 and the second contact portion 423, which will be described later. However, the present invention is not limited thereto. The first contact portion 421 may be located in front of the second contact portion 423 in the front-rear direction.

[0033] Referring to Figures 3 and 4, at each branch portion 481 of the elastic deformation portion 14, a second contact portion 423 is provided at the second inclined portion 413. In other words, a second contact portion 423 is provided at the free end portion 48 of the elastic deformation portion 14. In this embodiment, the second contact portion 423 is located between the first contact portion 421 and the mounting portion 12 in the vertical direction. Thus, in this embodiment, the elastic deformation portion 14 is provided with a second contact portion 423 located between the first contact portion 421 and the mounting portion 12 in the vertical direction. Furthermore, in this embodiment, the second contact portion 423 is located above the extension portion 16 in the vertical direction.

[0034] As shown in Figure 5, in this embodiment, there are two second contact portions 423, each provided on one of the two branch portions 481. The two second contact portions 423 are located apart from each other in the lateral direction. In this embodiment, each second contact portion 423 is a part of the side surface of the branch portion 481, and is a surface facing inward in the lateral direction.

[0035] As shown in Figure 6, the extension portion 16 is provided with a third contact portion 601. In this embodiment, the third contact portion 601 is the tip of the extension portion 16. The lateral size of the third contact portion 601 gradually decreases towards the tip of the extension portion 16. In this embodiment, the third contact portion 601 has two sides, each corresponding to one of the two second contact portions 423, and these sides face outward in the lateral direction.

[0036] As shown in Figures 1 to 7, the contact 10 of this embodiment further comprises a pair of deformation-preventing walls 18 extending from the mounting portion 12. In this embodiment, the deformation-preventing walls 18 extend upward from both ends of the mounting portion 12 in the lateral direction. In the lateral direction, the deformation-preventing walls 18 are located on both sides of the elastic deformation portion 14 and are slightly separated from the elastic deformation portion 14. As shown in Figures 2 and 4, when viewed along the lateral direction, the deformation-preventing walls 18 partially overlap with the elastic deformation portion 14.

[0037] As can be seen from Figures 8 to 14, when the first contact portion 421 is pushed downward, the elastic deformation portion 14 undergoes elastic deformation. During use, the first contact portion 421 is pushed down by contacting the second connected portion 721. At this time, the deformation prevention wall 18 suppresses the lateral movement of the elastic deformation portion 14.

[0038] As can be seen from Figures 10, 12, and 13, when the first contact portion 421 contacts the second connected portion 721 and the elastically deformable portion 14 elastically deforms, each of the second contact portions 423 and the corresponding side surface of the third contact portion 601 come into contact with each other laterally. Ideally, each of the second contact portions 423 and the corresponding side surface of the third contact portion 601 come into surface contact with each other. In practice, the edges of the second contact portions 423 may come into contact with the corresponding side surface of the third contact portion 601, or the edges of the side surfaces of the third contact portion 601 that correspond to the second contact portion 423 may come into contact. In any case, the second contact portions 423 and the third contact portions 601 come into contact with each other laterally.

[0039] As shown in Figures 10, 12, and 13, in the contact state where each of the second contact portions 423 is in contact with the corresponding side surface of the third contact portion 601, the third contact portion 601 is located between the two second contact portions 423 and is sandwiched between them. At this time, as can be understood from Figures 10 and 13, the distance between the two branches 481 increases toward their tips. This is because, after the second contact portion 423 comes into contact with the third contact portion 601, as the position of the second contact portion 423 moves further downward in the vertical direction, the distance between the second contact portions 423 is widened by the third contact portion 601.

[0040] As shown in Figures 3 and 4, the fourth horizontal section 415 is located below the second horizontal section 405 in the vertical direction. As shown in Figures 3 and 5, when viewed along the vertical direction, the fourth horizontal section 415 overlaps with the second horizontal section 405 at least partially. In this configuration, the second horizontal section 405 acts as a restricting section that restricts the upward movement of the fourth horizontal section 415. Thus, the elastic deformation section 14 has a restricting section. In this embodiment, the restricting section is located above the second contact section 423 in the vertical direction. The restricting section restricts the upward movement of the fourth horizontal section 415, thereby preventing the second contact section 423 from moving upward beyond the restricting section. This prevents excessive deformation or plastic deformation of the contact 10 even if the first contact section 421 or the second contact section 423 moves upward.

[0041] In the contact state shown in Figure 11, where the sides of the corresponding third contact portion 601 are in contact with each other, a first current path is formed in the contact 10, from the first contact portion 421 through the elastic deformation portion 14 to the mounting portion 12. In addition, in the contact state, a second current path is also formed in the contact 10, from the first contact portion 421 through the second contact portion 423 and the third contact portion 601 to the mounting portion 12. As can be seen from Figure 11, in this embodiment, the length of the second current path is shorter than the length of the first current path.

[0042] As can be seen from Figures 4 and 11, in the contact 10 according to this embodiment, the third horizontal portion 409 of the elastically deformable portion 14 and its vicinity function as a spring intermediate portion 417 that contacts the mounting portion 12 when the second contact portion 423 contacts the third contact portion 601. In other words, in this embodiment, the elastically deformable portion 14 further has a spring intermediate portion 417 that contacts the mounting portion 12 when in contact. However, the spring intermediate portion 417 that contacts the mounting portion 12 is not essential in this invention. In other words, in this invention, the third horizontal portion 409 and its vicinity do not need to contact the mounting portion 12 when the second contact portion 423 contacts the third contact portion 601.

[0043] As shown in Figure 11, in this embodiment, the spring intermediate portion 417 is provided such that the first contact portion 421 is located between the spring intermediate portion 417 and the second contact portion 423. Contact between this spring intermediate portion 417 and the mounting portion 12 further forms a third current path from the first contact portion 421 through the spring intermediate portion 417 to the mounting portion 12 when in contact. In this embodiment, the third current path is shorter than the second current path.

[0044] As described above, the contact 10 of this embodiment can achieve good spring characteristics by having a relatively long cantilever-shaped elastic deformation portion 14. Furthermore, by ensuring that the contact between the second contact portion 423 and the third contact portion 601 is achieved in the lateral direction, deterioration of the spring characteristics when the elastic deformation portion 14 undergoes elastic deformation can be suppressed. In addition, by having the second contact portion 423 and the third contact portion 601, the contact 10 can shorten the current path from the first contact portion 421 to the mounting portion 12. Moreover, by ensuring that the spring intermediate portion 417 of the contact 10 is in contact with the mounting portion 12, a third current path shorter than the second current path can be realized.

[0045] As shown in Figure 15, the contact 10 according to this embodiment can be used in the configuration of the contact mounting substrate 80. Also, as shown in Figures 16 to 18, the contact 10 can be used in the configuration of the connector 85.

[0046] The contact mounting substrate 80 shown in Figure 15 comprises a plurality of contacts 10 and a substrate 70A. In the contact mounting substrate 80, there are two contacts 10. However, the present invention is not limited to this. In the present invention, the contact mounting substrate 80 may have three or more contacts 10. In any case, the plurality of contacts 10 are arranged in two dimensions on the substrate 70A.

[0047] The connector 85 shown in Figures 16 to 18 comprises a plurality of contacts 10 and a retaining member 851. In the connector 85, there are ten contacts 10, arranged in two rows. However, the present invention is not limited to this. In the present invention, the connector 85 only needs to comprise one or more contacts 10 and a retaining member 851 that holds them. Furthermore, in the present invention, the plurality of contacts 10 included in the connector 85 may be arranged in a single row, or in three or more rows.

[0048] As can be seen from Figures 16 to 18, in the connector 85, each first contact portion 421 of the contact 10 is located above the upper surface of the retaining member 851 in the vertical direction. This is to enable contact with the first connected portion 701. Also, in the connector 85, each mounting portion 12 of the contact 10 is located below the lower surface of the retaining member 851 in the vertical direction. This is to enable connection to the second connected portion 721.

[0049] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the embodiments described above, and various modifications and changes are possible without departing from the spirit of the present invention. For example, the shape of the elastic deformation portion 14 is not limited to the above-described embodiment, and various shapes can be adopted. Also, the first contact portion 421 and the second contact portion 423 may be provided anywhere and in any way on the elastic deformation portion 14, as long as the condition is met that the second current path passing through the second contact portion 423 is shorter than the first current path which depends on the length of the elastic deformation portion 14. As an example, instead of the second inclined portion 413, a branch portion may be provided that branches off from the middle of the first inclined portion 411, and the second contact portion 423 may be provided on that branch portion. As another example, instead of the second inclined portion 413, the second contact portion 423 may be provided on a curved portion that extends from the front end of the first inclined portion 411 and is then bent backward.

[0050] Furthermore, in the above embodiment, the second contact portion 423 is located in front of the first contact portion 421 in the front-rear direction. However, in the present invention, the second contact portion 423 may be located behind the first contact portion 421 in the front-rear direction. To achieve this, the branching portion and curved portion described above can be used. However, the configuration in which the second contact portion 423 is located in front of the first contact portion 421 in the front-rear direction makes it easier to prevent excessive deformation of the elastic deformation portion 14 by the restricting portion. [Explanation of symbols]

[0051] 10 Contacts 12 Implementation Section 14 Elastic deformation part 16 Extension part 18 Deformation prevention wall 401 1st horizontal section 403 1st vertical section 405 2nd horizontal section 407 2nd vertical section 409 3rd horizontal section 411 1st slope section 413 2nd slope part 415 4th horizontal section 417 Spring middle section 421 1st contact part 423 2nd contact part 44 Upper opening 46 Lower opening 48 Free end 481 Branch 601 Third contact part 70 First substrate 70A circuit board 701 First connected part 72 Second board 721 Second connected part 80 Contact Mounting Board 85 Connectors 851 Retaining member

Claims

1. A contact that electrically connects a first connected portion of a first substrate and a second connected portion of a second substrate, which are located on the lower and upper sides in the vertical direction, respectively. The contact has a mounting portion connected to the first connected portion, a cantilever-shaped elastic deformation portion extending from the mounting portion, and an extension portion extending from the mounting portion. The elastically deformable portion is provided with a first contact portion that contacts the second connected portion, and a second contact portion located between the first contact portion and the mounting portion in the vertical direction. The extended portion is provided with a third contact portion. When the first contact portion contacts the second connected portion and the elastically deformable portion undergoes elastic deformation, the second contact portion and the third contact portion come into contact with each other in the lateral direction perpendicular to the vertical direction. In the contact state where the second contact portion and the third contact portion are in contact with each other, the length of the second current path from the first contact portion to the mounting portion via the second and third contact portions is shorter than the length of the first current path from the first contact portion to the mounting portion via the elastic deformation portion. contact.

2. A contact according to claim 1, The second contact portion is provided at the free end of the elastically deformable portion. contact.

3. A contact according to claim 2, In the front-to-back direction, which is perpendicular to both the vertical and horizontal directions, the first contact portion is located between the mounting portion and the second contact portion. contact.

4. A contact according to claim 3, The aforementioned elastic deformation portion further comprises a restricting portion, The restricting portion is located above the second contact portion in the vertical direction and restricts the second contact portion from moving upward beyond the restricting portion. contact.

5. A contact according to claim 2, The free end of the elastically deformable portion is branched into two branches. There are two of the aforementioned second contact portions, each provided on the branch portion. The two aforementioned second contact portions are located apart from each other in the lateral direction. In the aforementioned contact state, the third contact portion is sandwiched between the two second contact portions. contact.

6. A contact according to claim 5, The third contact portion has a size that decreases towards the tip in the lateral direction. In the aforementioned contact state, the distance between the two branches increases toward their tips. contact.

7. A contact according to claim 1, The aforementioned elastically deformable portion further comprises a spring intermediate portion, The first contact portion is located between the intermediate portion of the spring and the second contact portion. In the aforementioned contact state, the intermediate portion of the spring is in contact with the mounting portion, and a third current path is further formed, extending from the first contact portion through the intermediate portion of the spring to the mounting portion. contact.

8. A contact according to claim 1, The contact further comprises a pair of deformation-preventing walls extending from the mounting portion, The deformation prevention walls are located on both sides of the elastically deformable portion in the lateral direction. When viewed along the aforementioned lateral direction, the deformation prevention wall partially overlaps with the elastic deformation portion. contact.

9. The system comprises a contact as described in any one of claims 1 to 8, and a retaining member for holding the contact. connector.

10. A substrate comprising a plurality of contacts as described in any one of claims 1 to 8, The contacts are arranged on the substrate. Contact mounting board.

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