JP5773849B2 - Connecting terminal - Google Patents

Description

  The present invention relates to a connection terminal used for a power module.

  Conventionally, a power module is a key device for energy saving used in a wide range of fields from electric power control to motor control for industrial use and automobile use. The power module includes a substrate on which a plurality of semiconductor chips are stacked, a plurality of connection terminals that are connected to the respective semiconductors of the substrate to input and output power, and a connection terminal holder that holds the connection terminals. .

  In the connection terminal, a reliable electrical continuity between the external circuit board and the power module board is required. In response to this demand, there has been disclosed a connection terminal capable of electrically connecting an external circuit board and a power module board by elastic force using a plate-like contact spring (for example, a patent). Reference 1). By using the contact spring, it is possible to absorb fluctuations in the distance between conductors due to variations in distance between conductors, temperature changes, substrate warpage, etc., and maintain the contact state between the two contact objects.

JP 2008-198597 A

  By the way, in the power module described above, since a large current flows and is used, the connection terminals must cope with the conduction of the large current. However, in the connection terminal disclosed in Patent Document 1, for example, only one connection terminal conducts a current of about 20 to 30 A. For this reason, when it is necessary to flow a large current such as 100 A, five connection terminals are required. On the other hand, if the thickness of the connection terminal is increased in order to pass a current of 100 A with one connection terminal, the spring characteristics cannot be ensured.

  In addition, in order to ensure good conductivity, it is possible to dissipate heat generated by energization, but the connection terminal disclosed in Patent Document 1 does not have a structure that takes heat dissipation characteristics into consideration, For example, even when a current of about 20 to 30 A is conducted with one connection terminal, the generated heat cannot be radiated efficiently, and the accumulated heat may adversely affect the performance of the semiconductor chip.

  In addition, since the connection terminal disclosed in Patent Document 1 contacts the contact target at both ends of one contact spring, for example, when the external circuit board is warped or deformed due to vibration or the like, the contact spring is bent. As a result, the load of the contact spring changes, which also affects the contact on the substrate side of the power module, which may cause unstable electrical continuity.

  The present invention has been made in view of the above, and an object of the present invention is to provide a connection terminal that can realize reliable and good conduction between contact objects and has good spring characteristics and heat dissipation characteristics. To do.

  In order to solve the above-described problems and achieve the object, a connection terminal according to the present invention is a conductive connection terminal for connecting different substrates, and a flat plate portion having a substantially flat plate shape, A first belt-like portion extending from one end to form a belt having a width smaller than the width of the flat plate portion, and a belt having a width smaller than the width of the flat plate portion, the plate surface being substantially parallel to the first belt-like portion. A second belt-shaped portion, a coupling portion that couples the opposite ends of the first and second belt-shaped portions, and an end portion on a side different from the coupling side of the second belt-shaped portion with the coupling portion extend in a belt shape. The first and second belt-shaped members include an elastic portion facing the flat plate portion and contacting one of the substrates at the tip, and elastically deformable with respect to a load applied from a direction in which the second belt-shaped portion extends. At least one of the parts is in contact with the other substrate.

  In the connection terminal according to the present invention as set forth in the invention described above, the first or second belt-shaped portion extends from the belt-shaped side surface in a direction intersecting with a plane passing through a main surface along a direction extending in the belt shape. It has the 1st extending | stretching part and the 2nd extending | stretching part, It is characterized by the above-mentioned.

  In the connection terminal according to the present invention as set forth in the invention described above, the first and second extending portions extend on the same side with respect to the plane.

  In the connection terminal according to the present invention as set forth in the invention described above, the elastic portion has a shape curved in a direction orthogonal to the plate surface.

  Further, the connection terminal according to the present invention is characterized in that, in the above invention, the elastic portion has a shape in which a curved portion having an uneven surface is repeated on a plane through which a plate surface of the second band-shaped portion passes. To do.

  In the connection terminal according to the present invention as set forth in the invention described above, the connecting portion has a curved strip shape.

  Further, in the connection terminal according to the present invention, in the above invention, each of the first and second extending portions is a chamfered portion that is chamfered so that a distance between each outer edge orthogonal to a direction extending in a strip shape is reduced. It is characterized by having.

  According to the present invention, electrical continuity is ensured by the first or second belt-shaped portion that comes into contact with an electrode or the like, and the elastic portion that has a contact portion that comes into contact with the electrode or the like at the tip and elastically deforms according to a load. In addition, the heat generated by energization is released to the outside by a flat plate part that is connected to the first belt-like part and arranged at a position facing the elastic part, thus realizing reliable and good conduction between contact objects. In addition, it has the effect of having good spring characteristics and heat dissipation characteristics.

FIG. 1 is a perspective view showing a configuration of a power module according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing a configuration of a main part of the power module shown in FIG. FIG. 3 is a cross-sectional perspective view showing a configuration of a main part of the power module shown in FIG. FIG. 4 is a partial cross-sectional view showing a configuration of a main part of the power module shown in FIG. FIG. 5 is a side view showing the connection terminals of the power module according to the embodiment of the present invention. FIG. 6 is a cross-sectional view taken along line AA shown in FIG. 4 and shows a case where the load on the connection terminal of the power module is not loaded. FIG. 7 is a cross-sectional view taken along line AA shown in FIG. 4 and shows a case where a load is applied to the connection terminal of the power module. FIG. 8 is a side view showing a connection terminal according to a modification of the embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment. The drawings referred to in the following description only schematically show the shape, size, and positional relationship so that the contents of the present invention can be understood. That is, the present invention is not limited only to the shape, size, and positional relationship illustrated in each drawing. In the following description, a power module will be described as an example of the connection terminal.

  FIG. 1 is a perspective view showing a configuration of a power module 1 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing a configuration of a main part of the power module 1 shown in FIG. The power module 1 shown in FIGS. 1 and 2 includes a plurality of connection terminals 10 that are connected to a contact object and input / output power, and a connection terminal holder 20 that includes a plurality of housing portions 21 that respectively accommodate the plurality of connection terminals 10. And a substrate 30 on which a plurality of semiconductor chips D are loaded.

  The connection terminal holder 20 is formed using an insulating material such as a resin such as silicon or a machinable ceramic, and has a housing portion 21 that has a substantially rectangular shape for housing the connection terminals 10 in a predetermined pattern. The accommodating portion 21 is a columnar space having a substantially rectangular cross section, is provided corresponding to the connecting terminal 10 to be disposed, and is connected to the connecting terminal 10 so that the tip of the connecting terminal 10 protrudes from the upper surface of the connecting terminal holder 20. 10 is accommodated. In addition, it is preferable that the connection terminal holder 20 is formed using a material with high thermal conductivity.

  The substrate 30 is formed using an insulating resin or an insulating material such as ceramics, and includes a plurality of semiconductor chips D having a predetermined function and electrodes E connected to the semiconductor chips D. The substrate 30 is provided at a position where the electrode E is provided, and accommodates and fixes a part of the connection terminal 10 and also has a through hole 31 that is in contact with the connection terminal 10 and obtains electrical conduction in the accommodation part. Have. The through hole 31 forms a cylindrical internal space, and the side wall of the internal space is made of a conductive material.

  The semiconductor chip D is realized by a semiconductor element such as a diode, a transistor, or an IGBT (insulated gate bipolar transistor). A plurality of semiconductor chips D are provided on the substrate 30 in accordance with the purpose of use.

  The electrode E is patterned using copper or the like to form a circuit pattern for transmitting an electrical signal to the semiconductor chip D or the like mounted on the substrate 30. The semiconductor chip D and the electrode E are electrically connected by a wire W.

  The connection terminal holder 20 and the substrate 30 may be connected by screws or the like, or may be bonded by an adhesive or a seal member. That is, the connection form between the connection terminal holder 20 and the substrate 30 may be any connection form as long as the contact between the electrode and the connection terminal is not hindered.

  FIG. 3 is a cross-sectional perspective view showing a configuration of a main part of the power module 1 shown in FIG. FIG. 4 is a partial cross-sectional view showing a configuration of a main part of the power module 1 shown in FIG. FIG. 5 is a side view showing the connection terminal 10 of the power module 1 according to the present embodiment. 3 to 5 is made of a flat plate material made of a copper alloy such as phosphor bronze, chromium copper, beryllium copper, or Corson copper, and has a curved shape along the main surface.

  The connection terminal 10 has a substantially flat plate portion 11, a first belt portion 12 a extending from one end of the flat plate portion 11 in a band shape having a width smaller than the width of the flat plate portion 11, and a width smaller than the width of the flat plate portion 11. The second belt-like portion 12b that extends in the shape of the belt and whose plate surface is substantially parallel to the first belt-like portion 12a, and the connecting portion 13 that connects the opposite ends of the first belt-like portion 12a and the second belt-like portion 12b to each other. The second belt-like portion 12b extends from the end of the second belt-like portion 12b on the side different from the connection side to the plate-like portion 11 to face the flat plate portion 11, contacts the contact target at the tip portion, and the second belt-like portion 12b extends. And an elastic portion 14 that can be elastically deformed with respect to a load applied from a direction that can be elastically deformed with respect to a load applied from a direction. In addition, the 1st strip | belt-shaped part 12a, the 2nd strip | belt-shaped part 12b, and the connection part 13 are press-fit in the through hole 31, and comprise the press-fit part 40 which has a press fit characteristic. The length (width) of the connecting end portion of the flat plate portion 11 with the first belt-like portion 12 a is larger than the width of the press-fit portion 40. The connection terminal 10 according to the present embodiment is press-fitted and fixed as a press-fit characteristic by a load applied from the through hole 31 in a direction perpendicular to the plate surfaces of the first strip portion 12a and the second strip portion 22a. Is done.

  The flat plate portion 11 protrudes from the side surface perpendicular to the side surface connected to the rectangular portion 11a and the first belt-like portion 12a of the rectangular portion 11a, and is curved in a direction perpendicular to the main surface of the rectangular portion 11a. Two projecting portions 11b. The rectangular part 11a releases the heat generated in the connection terminal 10 to the outside. Further, in order to improve the rigidity of the rectangular portion 11a (connecting terminal 10), the rectangular portion 11a has a short direction of the connecting terminal 10 (a direction parallel to a side connected to the first belt-like portion 12a of the rectangular portion 11a). A convex portion 11c extending in a convex shape in the longitudinal direction (direction perpendicular to the side connected to the first belt-like portion 12a of the rectangular portion 11a) is formed in the central portion.

  The flat plate portion 11 has the highest rigidity among the components of the connection terminal 10 and has a function as a support portion that supports the connection terminal 10 when a load is applied from the outside. In addition, it is preferable that the rectangular part 11a is formed so that the surface area may become the largest among the components of the connection terminal 10.

  The protruding portion 11 b has a function as a gripping portion that is gripped when the connection terminal 10 is inserted and removed from the substrate 30. Moreover, in the protrusion part 11b, when the distance between the outer edges of the two protrusion parts 11b is made equal to the length of one side of the storage part 21, each connection part 10 is accommodated when the connection terminal 10 is accommodated in the storage part 21. You may make it contact | abut with the internal wall surface of the part 21. FIG. Thereby, in the accommodating part 21, the positioning of the direction which connects between the outer edges of the two protrusion parts 11b of the connecting terminal 10 can be performed. In addition, it is preferable that the protrusion direction of the protrusion part 11b is the elastic part 13 side, and it is preferable that the protrusion direction of the convex part 11c is a different side from the side in which the elastic part 13 is arrange | positioned.

  The first strip portion 12a includes a first extending portion 12c and a second extending portion 12d that extend from the strip-shaped side surface in directions intersecting with a plane passing through the main surface along the strip-shaped direction. The first extending portion 12c and the second extending portion 12d are provided on the insertion tip side (the connecting portion 13 side) with respect to the through hole 31, and are chamfered so that the distance between the outer edges decreases toward the end portion. , 121b.

  Moreover, the 1st extending | stretching part 12c and the 2nd extending | stretching part 12d are the side (same side) which opposes the 2nd strip | belt-shaped part 12b of the 1st strip | belt-shaped part 12a with respect to the plane which passes along the main surface along the direction extended in strip | belt shape. Each has a shape extending. Here, the outer peripheral side surfaces of the first extending portion 12c and the second extending portion 12d have a shape along the inner wall surface of the through hole 31, and have an R shape having a diameter equal to or slightly larger than the diameter of the inner space of the through hole 31. It is curved to make it.

  The second belt-like portion 12b has a plate surface substantially parallel to the first belt-like portion 12a and extends in a direction opposite (or the same direction) as the direction in which the first belt-like portion 12a extends. In addition, the width of the second strip portion 12b may be equal to or different from the width of the first strip portion 12a. The widths of the first strip portion 12a and the second strip portion 12b are applicable as long as the width is smaller than the diameter of the through hole 31.

  The connecting portion 13 extends in a curved strip shape, and connects the first strip portion 12a and the second strip portion 12b. In addition, this strip | belt-shaped width | variety may differ from the 1st strip | belt-shaped part 12a and the 2nd strip | belt-shaped part 12b, and may be equivalent. Moreover, as long as the connection part 13 has connected the 1st strip | belt-shaped part 12a and the 2nd strip | belt-shaped part 12b, it may extend in flat form.

  The elastic part 14 has a curved shape in a direction perpendicular to the plate surface. In addition, the elastic portion 14 is provided at an end portion on the side different from the connection side with the second belt-like portion 12b, forms an arc shape, and contacts on the side different from the contact portion 14a. And a convex portion 14b which is provided on the portion side and has a convex shape with respect to the plate surface. The elastic part 14 is elastically deformed by a load including disturbance vibration that generates a load fluctuation in a direction in which the second belt-like part 12b extends. By forming the convex portion 14b, the rigidity of the elastic portion 14 can be improved. At this time, the plate surface of the elastic portion 14 and the plate surface of the flat plate portion 11 are opposed to each other.

  By forming the first belt-like portion 12a, the second belt-like portion 12b, the connecting portion 13 and the elastic portion 14 using a belt-like member, it is possible to flow a current of 40 A or more with one connection terminal 10. Become. For example, the plate thickness (length in a direction orthogonal to the main surface) of the first band-shaped portion 12a, the second band-shaped portion 12b, the connecting portion 13 and the elastic portion 14 is 0.2 mm, and the width (perpendicular to the longitudinal direction of the main surface). A current of 40 A or more can be passed by setting the length in the direction to 3.0 mm.

  Further, since the flat plate portion 11 has rigidity, when the press-fit portion 40 is inserted into the through-hole 31, the press-fit portion 40 is inserted into the through-hole without deformation of the connection terminal 10 due to a load applied to the connection terminal 10. 31 can be inserted. At this time, the stepped shape formed by the flat plate portion 11 and the first belt-like portion 12 contacts the upper surface of the through hole 31 (the upper surface of the substrate 30). Further, the chamfered portions 121a and 121b are formed in the first extending portion 12c and the second extending portion 12d, respectively, so that the insertion into the through hole 31 is facilitated.

  Here, the connection terminal 10 is produced by forming a single flat plate by etching or pressing. Specifically, a planar shape corresponding to the outer edge shape of the connection terminal 10 is formed from a flat plate, a curved portion other than the connecting portion 13 is formed, and then the connecting portion 13 is formed. In addition, it may be integrally manufactured by forming each component by etching or pressing and then connecting the components.

  FIG. 6 is a cross-sectional view taken along line AA shown in FIG. 4 and shows a case where the load on the connection terminal of the power module is not loaded. Here, as shown in FIG. 6, a part of the flat plate portion 11 and the elastic portion 14 of the connection terminal 10 is held in the substrate 30 so as to protrude from the upper surface of the connection terminal holder 20. Is housed in. For this reason, when the electrode to be connected is approached from above the connection terminal 10, the electrode and the contact portion 14a can be brought into contact with each other.

FIG. 7 is a cross-sectional view showing a state in which a load F is applied from the contact portion 14a in the state of FIG. As shown in FIG. 7, when the contact portion 14a comes into contact with the electrode and a load F (see FIG. 6) is applied, the elastic portion 14 is elastically deformed. Here, broken lines P ₀ indicates the position of the connection terminal 10 in a state where the contact portion 14a is not applied load F (see Fig. 6).

  The connection terminal 10 is elastically deformed according to the load transmitted by the elastic portion 14 to absorb variations in distance between the terminal and the contact object due to variations in distance between conductors, temperature changes, board warpage, and the like. In addition, the contact state with the contact object can be maintained.

  In the connection terminal 10, when the press-fit portion 40 is inserted into the through hole 31 and the contact portion 14 a comes into contact with the electrode, a current flows between the contact portion of the through-hole 31 of the press-fit portion 40 and the elastic portion 14 (contact portion 14 a). Circulate.

  According to the above-described embodiment, electrical conduction is achieved by the press-fit portion 40 to be inserted into the through hole 31 and the elastic portion 14 having the contact portion 14a in contact with the electrode or the like and elastically deforming according to the load. Since the heat generated by energization is released to the outside by the flat plate portion 11 (rectangular portion 11a) that is secured, connected to the press-fit portion 40, and disposed at a position facing the elastic portion 14, between the contact objects A connection terminal having good spring characteristics and heat dissipation characteristics can be obtained while ensuring reliable and good conduction.

  In addition, since most of the current flows through the press-fit portion 40 and the elastic portion 14, the heat generated by energization can be transmitted to the flat plate portion 11 and radiated to the outside, so that the electrical resistance increases due to the generated heat. It is possible to suppress the decrease in conductivity.

  Further, since the plate surface of the flat plate portion 11 and the plate surface of the elastic portion 14 are opposed to each other, heat generated by energization in the elastic portion 14 (contact portion 14a) is thermally transferred to the flat plate portion 11 by thermal radiation, It is also possible to obtain an effect of radiating heat from the flat plate portion 11 to the outside. Thereby, the increase in electrical resistance due to the generated heat can be further suppressed, and the decrease in conductivity can be further suppressed.

  Here, since the connection terminal according to the present embodiment is provided with the elastic portion 14 having spring characteristics and the flat plate portion 11 having heat dissipation characteristics separately, for example, the flat plate portion 11 is connected to the inner wall surface of the connection terminal holder 20. By making the contact, it is possible to dissipate the heat generated by energization to the outside more efficiently. On the other hand, the conventional connection terminal cannot be brought into contact with the inner wall surface of the connection terminal holder 20 because the elastic portion has a function of heat dissipation, and the above-described heat dissipation characteristics cannot be obtained.

  Further, in the connection terminal according to the above-described embodiment, the elastic portion 14 is elastically deformed with respect to a load from the outside, and the first extending portion 12c and the first extension portion 12c of the press-fit portion 40 with respect to the load from the substrate 30. Since the two extending portions 12d are elastically deformed, for example, the influence of the external load on the contact state between the substrate 30, the first extending portion 12c, and the second extending portion 12d is small. Thereby, each contact state with respect to the contact object which contacts can be made still more reliable. In addition, since the press-fit portion 40 is fixed by being press-fitted into the through hole 31, the influence of the external load on the contact state between the connection terminal 10 and the substrate 30 is small, and a stable contact state can be maintained. it can.

  In addition, the connection terminal according to the present embodiment described above is configured by using a plurality of conventional terminals because it is possible to flow a single current when a large current such as 100 A needs to flow. As compared with the case, the size of the apparatus can be reduced.

  FIG. 8 is a side view showing a connection terminal according to a modification of the present embodiment. In addition, the same code | symbol is attached | subjected to the location same as the structure concerning the power module mentioned above. 8 includes a flat plate portion 15 having a substantially flat plate shape, a press-fit portion 40a extending in a band shape from one end of the flat plate portion 15, and an end portion on a side different from the connection side of the press-fit portion 40a to the flat plate portion 15. And an elastic portion 16 that extends in a belt shape and is elastically deformable with respect to a load applied from the outside. The press-fit portion 40a is provided on the end side of the first belt-like portion 12a, the second belt-like portion 12b and the connecting portion 13 described above and on the side different from the connecting portion 13 of the second belt-like portion 12b. And a convex portion 12e for improving rigidity. Further, the length (width) of the connecting end portion of the flat plate portion 15 with the press-fit portion 40a is larger than the width of the press-fit portion 40a. In addition, the convex part 12e may be provided in the edge part by the side of the 2nd strip | belt-shaped part 12b of the elastic part 16. FIG.

  The flat plate portion 15 protrudes from the side surface perpendicular to the side surface connected to the rectangular portion 15a and the press-fitting portion 40a of the rectangular portion 15a, and is bent in a direction orthogonal to the main surface of the rectangular portion 15a. And a protruding portion 15b. The rectangular portion 15a releases the heat generated in the connection terminal 10a to the outside. Further, similarly to the rectangular portion 11a, the rectangular portion 15a is formed with a convex portion extending in a convex shape in the longitudinal direction at the central portion in the short direction. The protruding portion 15 b is gripped when the connection terminal 10 a is inserted and removed from the substrate 30. The flat plate part 15 has the highest rigidity among the constituent elements of the connection terminal 10a, and has a function as a support part that supports the connection terminal 10a when a load is applied from the outside. In addition, it is preferable that the protrusion direction of the protrusion part 15b is the elastic part 16 side, and it is preferable that the protrusion direction of a convex part is a different side from the side in which the elastic part 16 is arrange | positioned.

  The elastic portion 16 is provided at an end portion on the side different from the connection side with the press-fit portion 40a, has an arc shape, and has a contact portion 16a that contacts an electrode to be contacted. Here, the plate surface of the elastic portion 16 faces the plate surface of the flat plate portion 15. The elastic portion 16 extends in a zigzag shape in which a curved portion having opposite concavities and convexities is repeated on the plane through which the plate surface of the second strip portion 12b passes. The elastic portion 16 reciprocates in a direction substantially perpendicular to the direction in which the second strip portion 12b extends in a strip shape, and has a shape extending in a direction parallel to the direction in which the second strip portion 12b extends in a strip shape. The direction in which the elastic portion 16 extends is preferably a direction parallel to the plate surface of the flat plate portion 15.

  According to the modification, the elastic portion 16 reciprocates in a direction substantially perpendicular to the direction in which the second belt-like portion 12b extends in the belt shape, and the unevenness extending in the direction parallel to the direction in which the second belt-like portion 12b extends in the belt shape is reversed. Compared with the above-described embodiment, the elastically deformed area (between the terminal and the contact object due to the variation in the distance between conductors, temperature change, warpage of the substrate, etc.) (Corresponding region for distance fluctuation) can be increased. Further, since the elastic portion 16 can be elastically deformed on a plane substantially parallel to the plate surface of the flat plate portion 15, contact between the flat plate portion 15 and the elastic portion 16 due to elastic deformation can be prevented more reliably.

  In the above-described embodiment, the extending portions (the first extending portion 12c and the second extending portion 12d) have been described as being provided in the first strip portion 12a. However, the extending portion is provided in the second strip portion 12b. It may be provided, or may be provided on the side surfaces of the first belt-like portion 12a and the second belt-like portion 12b that are not opposed to each other. Moreover, it may be press-fitted into the through hole 31 without providing an extending portion, and may be in contact with the side surface of the through hole 31 on the side surface side of the first belt-like portion 12a and / or the second belt-like portion 12b. At this time, it is preferable that a hole for elastic deformation is provided in the belt-like portion on the contact side with the through hole 31.

  In addition, the first extending portion 12c and the second extending portion 12d have been described as extending on the same side with respect to the plane passing through the surface of the first band-shaped portion 12a facing the second band-shaped portion 12b. It may extend on the same side with respect to a plane passing through the surface of the first band-shaped portion 12a that does not face the second band-shaped portion 12b, or may extend on a different side with respect to this plane. Good.

  As described above, the connection terminal according to the present invention can realize reliable and good conduction between contact objects, and is useful as having good spring characteristics and heat dissipation characteristics.

DESCRIPTION OF SYMBOLS 1 Power module 10, 10a Connection terminal 11,15 Flat plate part 11a, 15a Rectangular part 11b, 15b Protrusion part 11c, 12e, 14b Protrusion part 12a 1st strip | belt-shaped part 12b 2nd strip | belt-shaped part 12c 1st extending | stretching part 12d 2nd extending | stretching part DESCRIPTION OF SYMBOLS 13 Connection part 14,16 Elastic part 14a, 16a Contact part 20 Connection terminal holder 21 Accommodating part 30 Substrate 31 Through-hole 40, 40a Press-fit part 121a, 121b Chamfering part

Claims (7)

A conductive connection terminal for connecting different substrates,
A flat plate portion having a substantially flat plate shape;
A first belt-shaped portion extending from one end of the flat plate portion in a strip shape having a width smaller than the width of the flat plate portion;
A second belt-shaped portion extending in a band shape having a width smaller than the width of the flat plate portion, the plate surface being substantially parallel to the first belt-shaped portion;
A connecting portion that connects opposite ends of the first and second strips;
Faces apart from the said plate extending in a strip shape from the end portion of the connecting side different from the side of said connection portion of the second strip portion, with contact with one substrate at the tip, the second strip portion An elastic portion that can be elastically deformed with respect to a load applied from a direction in which
With
A connection terminal, wherein at least one of the first and second belt-shaped portions is in contact with the other substrate.   The first or second belt-shaped portion includes a first stretched portion and a second stretched portion that respectively extend from a belt-shaped side surface in a direction intersecting with a plane passing through a main surface along a direction extending in the belt shape. The connection terminal according to claim 1.   The connection terminal according to claim 2, wherein the first and second extending portions extend on the same side with respect to the plane.   The connection terminal according to claim 1, wherein the elastic portion has a shape curved in a direction orthogonal to the plate surface.   The connection according to any one of claims 1 to 3, wherein the elastic portion has a shape in which a curved portion having an uneven surface is repeated on a plane through which a plate surface of the second band-shaped portion passes. Terminal.   The connection terminal according to claim 1, wherein the connecting portion has a curved band shape.   3. The connection terminal according to claim 2, wherein each of the first and second extending portions has a chamfered portion that is chamfered so that a distance between the outer edges orthogonal to a direction extending in a strip shape is reduced.

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