Connecting Devices

Abstract

A connection device according to the present invention comprises: a first substrate and a second substrate that is located above the first substrate and is disposed so as to face the first substrate; a protruding part that is provided to an upper surface of the first substrate and protrudes toward the second substrate from the first substrate; a first terminal provided to the protruding part; and a second terminal that is provided to a lower surface of the second substrate and is disposed so as to face the first terminal. The first terminal has a first connecting part and a second connecting part, and the first connecting part and the second connecting part are electrically joined to each other. The second terminal has a third connecting part that contacts the first connecting part and a fourth connecting part that contacts the second connecting part, and the third connecting part and the fourth connecting part are electrically joined to each other. The third connecting part is located above the first connecting part, and the second connecting part is located between the fourth connecting part and a first side surface of the protruding part. The third connecting part is elastic and presses upon the first connecting part. The fourth connecting part is elastic and presses upon the second connecting part.

Description

[Technical field]

[0001] The present disclosure relates to a connection device used for various electrical devices. [Background technology]

[0002] A conventional connection device is described below. In the conventional connection device, a first terminal made of an elastic conductive plate holds a second terminal in a sandwiched manner, thereby stabilizing the connection between the first terminal and the second terminal.

[0003] As prior art document information related to this application, for example, Patent Document 1 is known. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 4-141967 Summary of the Invention

[0005] In conventional connection devices, even if the elasticity of the conductive plate constituting the first terminal is large, repeated application of force to the first terminal may cause the connection between the first terminal and the second terminal to become unstable. In other words, in conventional connection devices, there is a risk that the reliability of the connection between the first terminal and the second terminal may decrease.

[0006] A connection device according to one embodiment of the present disclosure includes a first substrate, a second substrate located above the first substrate and facing the first substrate, a protrusion provided on an upper surface of the first substrate and protruding from the first substrate toward the second substrate, a first terminal provided on the protrusion, and a second substrate located on a lower surface of the second substrate and facing the first terminal, wherein the first terminal has a first connection portion and a second connection portion, the first connection portion and the second connection portion being electrically coupled to each other, the second terminal has a third connection portion in contact with the first connection portion and a fourth connection portion in contact with the second connection portion, the third connection portion and the fourth connection portion being electrically coupled to each other, the third connection portion being located above the first connection portion, the second connection portion being located between a first side surface of the protrusion portion and the fourth connection portion, the third connection portion being elastic and pressing the first connection portion, and the fourth connection portion being elastic and pressing the second connection portion.

[0007] According to the present disclosure, the contact state between the terminals can be stabilized regardless of the direction in which the connection device receives force. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a side view showing a configuration of a connection device according to a first embodiment of the present disclosure. [Diagram 2] FIG. 1 is a perspective view showing a part of a connection device according to a first embodiment of the present disclosure. [Diagram 3] FIG. 11 is a perspective view showing a part of a connection device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the present disclosure, terms indicating directions such as "upper", "lower", "right", "left", "front", and "rear" are used, but these only indicate relative positional relationships and do not limit the present disclosure.

[0010] (Embodiment 1) FIG. 1 is a side view showing a configuration of a connection device in accordance with a first embodiment of the present disclosure, and FIG. 2 is a perspective view showing a part of the connection device in accordance with the first embodiment of the present disclosure.

[0011] In addition, the first connection portion 7 and the third connection portion 9 are in contact with each other in a steady state, but in Fig. 1, the first connection portion 7 and the third connection portion 9 are shown as being spaced apart from each other to make it easier to understand the structure of each element. Similarly, the second connection portion 8 and the fourth connection portion 10 are in contact with each other in a steady state, but in Fig. 1, the second connection portion 8 and the fourth connection portion 10 are shown as being spaced apart from each other.

[0012] 2 and FIG. 3 described later, the first substrate 2 and the second substrate 3 are omitted.

[0013] The connection device 1 includes a first substrate 2, a second substrate 3, a protrusion 4, a first terminal 5, and a second terminal 6. The first substrate 2 and the second substrate 3 face each other. The protrusion 4 is provided on the upper surface of the first substrate 2, and protrudes from the first substrate 2 toward the second substrate 3. As shown in FIG. 1, the upper surface of the protrusion 4 will be referred to as a top surface 4A, the left side surface as a side surface 4B (see FIG. 2), the front side surface as a side surface 4C (see FIG. 2), and the axis of the protrusion 4 as an axis 4Z.

[0014] 2, the first terminal 5 has two first connection portions 7 and a second connection portion 8. The two first connection portions 7 are joined to each other by the second connection portion 8. The first connection portion 7 is disposed so as to contact the top surface 4A, which is the upper surface of the protrusion 4. The second connection portion 8 is disposed so as to contact the side surface 4B of the protrusion 4.

[0015] The second terminal 6 has two third connection portions 9, two fourth connection portions 10, and a fifth connection portion 11. The two third connection portions 9 and the two fourth connection portions 10 are coupled to each other by the fifth connection portion 11.

[0016] In this embodiment, two of each of the first connection portion 7, the third connection portion 9, and the fourth connection portion 10 are provided, but it is not necessary to provide two of each, as long as one or more of each is provided.

[0017] As shown in FIG. 2, the third connection portion 9 contacts the first connection portion 7 , and the fourth connection portion 10 contacts the second connection portion 8 .

[0018] The third connection portion 9 has elasticity. The third connection portion 9 presses the first connection portion 7. In the present disclosure, the third connection portion 9 presses the first connection portion 7 downward.

[0019] The fourth connection portion 10 has elasticity. The fourth connection portion 10 presses the second connection portion 8. In the present disclosure, the fourth connection portion 10 presses the second connection portion 8 to the right.

[0020] As described above, the first terminal 5 and the second terminal 6 are electrically connected to each other at a plurality of contact portions. More specifically, the first terminal 5 and the second terminal 6 are electrically connected to each other at the contact portion between the third connection portion 9 and the first connection portion 7 and the contact portion between the fourth connection portion 10 and the second connection portion 8.

[0021] The force with which the third connection portion 9 and the first connection portion 7 come into contact with each other acts in the up-down direction, and the force with which the fourth connection portion 10 and the second connection portion 8 come into contact with each other acts in the left-right direction.

[0022] With this configuration, for example, when an external force causes connection device 1 to vibrate in the vertical direction, causing first substrate 2 and second substrate 3 to move away from or toward each other, the contact state between third connection portion 9 and first connection portion 7 becomes unstable. On the other hand, the contact state between fourth connection portion 10 and second connection portion 8 is less susceptible to vertical forces. The contact state between fourth connection portion 10 and second connection portion 8 is less susceptible to vertical vibrations.

[0023] As another example, when the connection device 1 vibrates in the left-right direction, the contact state between the fourth connection portion 10 and the second connection portion 8 becomes unstable. On the other hand, the contact state between the third connection portion 9 and the first connection portion 7 is not easily affected by a force in the left-right direction. The connection state between the third connection portion 9 and the first connection portion 7 is not easily affected by vibration in the left-right direction.

[0024] In the connection device 1 of the present disclosure, even if a large force acts on the first substrate 2 and the second substrate 3, causing stress to be concentrated on the first terminal 5 and the second terminal 6, at least one of the multiple contact points is unlikely to be affected by external forces.

[0025] That is, the connection device 1 of the present disclosure has a plurality of portions where the first terminal 5 and the second terminal 6 contact each other. Furthermore, the plurality of portions where the first terminal 5 and the second terminal 6 contact each other include two or more contact portions where the first terminal 5 and the second terminal 6 face each other in different directions. Therefore, at least one of the plurality of contact portions is unlikely to be affected by external forces.

[0026] As is clear from the above description, in the connection device 1 of the present disclosure, the reliability of the contact state between the first terminal 5 and the second terminal 6 can be maintained at a high level.

[0027] [Example of using connection device 1] Next, a usage example of the connection device 1 will be described with reference to Figures 1 and 2. For example, the connection device 1 is used to supply power from an external device (not shown) to a device (not shown) provided on the first board 2 via the connection device 1 by connecting the first terminal 5 and the second terminal 6 to each other.

[0028] As another example, the connection device 1 is used to supply power from a device (not shown) provided on the first substrate 2 to an external device (not shown) via the connection device 1 by connecting the first terminal 5 and the second terminal 6 to each other.

[0029] [Details of the configuration of the first substrate 2 and the second substrate 3] In the present disclosure, as shown in FIG. 1, the plate-shaped first substrate 2 and the plate-shaped second substrate 3 are used for explanation, but the present invention is not limited to this shape.

[0030] For example, the first substrate 2 may be a base-like substrate on which a large number of devices are arranged. The first substrate 2 does not necessarily have to be plate-like, and may be a housing. For example, the second substrate 3 may be a housing, and the second substrate 3 may be a lid that can cover the first substrate 2.

[0031] As another example, the first substrate 2 and the second substrate 3 may be mechanically coupled. An example will be described in which the first substrate 2 is a housing and the second substrate 3 is a lid. The first substrate 2 as a housing and the second substrate 3 as a lid are mechanically coupled to each other, so that the second substrate 3 can be provided so as to be able to open and close like a door. In this case, it is preferable that the first terminal 5 provided on the first substrate 2 and the second terminal 6 provided on the second substrate are electrically connected when the second substrate 3 as a door is in a closed state.

[0032] 1, the first terminal 5 and the second terminal 6 are mechanically fixed to the first substrate 2 and the second substrate 3 by different fixing devices. The second terminal 6 is fixed to the second substrate 3 by a fixing device 12.

[0033] [Details of the configuration of protrusion 4] Next, the configuration of the protruding portion 4 will be described in detail.

[0034] In FIG. 1, the protrusion 4 is provided on the first substrate 2 and protrudes from the first substrate 2 toward the second substrate 3. In FIG. 1, the protrusion 4 is a separate element from the first substrate 2, but the first substrate 2 and the protrusion 4 may be formed integrally. The protrusion 4 does not necessarily have to be columnar. It is preferable that the protrusion 4 is provided on the first substrate 2 and has a shape that protrudes from the first substrate 2 toward the second substrate 3 in a columnar shape. When the protrusion 4 is columnar, it is preferable that the protrusion 4 is prismatic rather than cylindrical. The second connection portion 8 of the first terminal 5 is configured to surround the side surface (side surface 4B, side surface 4C, etc.) of the protrusion 4. The fourth connection portion 10 of the second terminal 6 contacts the first terminal 5 at the second connection portion 8, so that the surface of the second connection portion 8 that contacts the fourth connection portion 10 is preferably flat rather than curved. Therefore, it is preferable that the side surface 4B of the protrusion 4 on which the second connection portion 8 is provided is flat.

[0035] The first connection portion 7 is provided on a top surface 4A of the protruding portion 4. The top surface 4A is the surface facing the second substrate 3.

[0036] [Configuration details of Device 1] As shown in Fig. 1, the second terminal 6 is disposed on the lower surface of the second substrate 3. The third connection portion 9 and the fourth connection portion 10 are electrically coupled to each other. The third connection portion 9 contacts the first connection portion 7, and the fourth connection portion 10 contacts the second connection portion 8. Note that in Fig. 1, in order to make the structure easier to understand, the first connection portion 7 and the third connection portion 9 are illustrated as being disposed apart from each other, and the second connection portion 8 and the fourth connection portion 10 are illustrated as being disposed apart from each other.

[0037] As already described, the third connection portion 9 has elasticity. The third connection portion 9 presses the first connection portion 7 along the direction of the axis 4Z of the protrusion 4, and the third connection portion 9 and the first connection portion 7 are in contact with each other.

[0038] The fourth connection portion 10 has elasticity. The fourth connection portion 10 presses the second connection portion 8, and in a steady state, the fourth connection portion 10 and the second connection portion 8 are in contact with each other. The direction in which the fourth connection portion 10 presses the second connection portion 8 is a direction perpendicular to the axis 4Z of the protrusion 4.

[0039] The second substrate 3, which is provided in a plate or plane shape, is prone to vibration due to external forces, which causes fluctuations in the distance between the first terminal 5 and the second terminal 6. Since the third connection portion 9 has elasticity, the electrical connection between the first terminal 5 and the second terminal 6 can be maintained even if the positional relationship between the first terminal 5 and the second terminal changes.

[0040] When an external force causes connection device 1 to vibrate in the vertical direction and the distance between first terminal 5 and second terminal 6 changes at high speed, chattering may occur in the connection state between third connection portion 9 and first connection portion 7. When chattering occurs, the connection state between third connection portion 9 and first connection portion 7 becomes unstable.

[0041] However, the direction in which the fourth connection part 10 presses the second connection part 8 using elastic force is a direction perpendicular to the vertical direction, which is the direction of vibration. In the present disclosure, the fourth connection part 10 presses the second connection part 8 to the right. When vertical vibration occurs and the connection state between the third connection part 9 and the first connection part 7 is unstable, the position at which the fourth connection part 10 presses the second connection part 8 only fluctuates in the vertical direction, and the electrical connection state between the fourth connection part 10 and the second connection part 8 is stable. In other words, even if the contact position between the fourth connection part 10 and the second connection part 8 fluctuates in the vertical direction, the contact position between the fourth connection part 10 and the second connection part 8 only changes as the fourth connection part 10 and the second connection part 8 rub against each other, and the electrical connection between the fourth connection part 10 and the second connection part 8 is maintained.

[0042] Therefore, the connection device 1 of this embodiment can maintain high reliability.

[0043] The length of the second connection portion 8 in the vertical direction is preferably set to a length that allows the fourth connection portion 10 and the second connection portion 8 to maintain contact with each other while rubbing against each other even when vibrating in the vertical direction.

[0044] The third connection portion 9 and the fourth connection portion 10 are configured by bending a plate-shaped conductor. With this configuration, the third connection portion 9 can generate an elastic force used when pressing the first connection portion 7. Similarly, the fourth connection portion 10 can generate an elastic force used when pressing the second connection portion 8.

[0045] As described above, the second substrate 3, which is plate-like or planar, is prone to vibration due to external forces, and the displacement of the distance separating the first terminal 5 and the second terminal 6 in the direction in which the axis 4Z of the protrusion 4 extends (up-down direction) tends to be greater than the displacement of the distance separating the first terminal 5 and the second terminal 6 in a direction perpendicular to the axis 4Z (left-right direction, front-back direction, etc.).

[0046] For example, when the first substrate 2 is a housing and the second substrate 3 is used as a lid, the lid is designed to be pressed, and distortion in the vertical direction is likely to occur. Therefore, the change in distance in the vertical direction is likely to be larger than the change in distance in the left-right direction, front-back direction, etc.

[0047] Therefore, it is preferable to set the amount of deflection when the third connection portion 9 presses the first connection portion 7 to be larger than the amount of deflection when the fourth connection portion 10 presses the second connection portion 8. It is preferable that the force with which the third connection portion 9 presses the first connection portion 7 is larger than the force with which the fourth connection portion 10 presses the second connection portion 8.

[0048] As described above, the second terminal 6 has the third connection portion 9 and the fourth connection portion 10, is disposed on the second substrate 3, and the third connection portion 9 and the fourth connection portion 10 are electrically coupled to each other. In order to electrically couple the third connection portion 9 and the fourth connection portion 10 to each other, a fifth connection portion 11 is provided as shown in Fig. 1. The second terminal 6 is connected to the second substrate 3 at the fifth connection portion 11 by a fastener 12.

[0049] As described above, the third connection portion 9 and the fourth connection portion 10 are electrically coupled to each other. At the same time, the mechanical association between the third connection portion 9 and the fourth connection portion 10 is reduced with the fifth connection portion 11 or the fastener 12 as the boundary. To be more specific, the stress generated by the third connection portion 9 pressing the first connection portion 7 is unlikely to be transmitted to the fourth connection portion 10. The stress generated by the fourth connection portion 10 pressing the second connection portion 8 is unlikely to be transmitted to the third connection portion 9.

[0050] Therefore, even if the amount of change in the deflection of the third connection portion 9 increases in the direction in which the axis 4Z of the protrusion 4 extends, or even if the deflection of the third connection portion 9 changes in a short period of time, the influence from the third connection portion 9 to the fourth connection portion 10 is suppressed. As a result, the influence on the force with which the fourth connection portion 10 presses the second connection portion 8 is suppressed. It is possible to maintain an even higher reliability of the electrical connection state between the first terminal 5 and the second terminal 6.

[0051] The second terminal 6 preferably has a third connection portion 9, a fourth connection portion 10 and a fifth connection portion 11 formed by a single conductor.

[0052] As shown in Fig. 1, the first bent portion 13 is formed by bending the right end portion of the fifth connection portion 11 downward and then further bending it. The portion between the third connection portion 9 and the fifth connection portion 11 corresponds to the first bent portion 13. The tip of the third connection portion 9 is bent into an L-shape. With this configuration, the third connection portion 9 has elasticity in the up-down direction.

[0053] As shown in Fig. 1, the second bent portion 14 is formed by bending the left end of the fifth connection portion 11 downward and then further bending it. The portion between the fourth connection portion 10 and the fifth connection portion 11 corresponds to the second bent portion 14. The tip of the fourth connection portion 10 is bent to form an L-shape. With this configuration, the third connection portion 9 has elasticity in the left-right direction.

[0054] The configuration of FIG. 1 can be explained in another way as follows.

[0055] The fifth connection portion 11, which is a part of the second terminal 6, and the first connection portion 7, which is a part of the first terminal 5, are generally opposed to each other. In order to obtain a large pressing force, the third connection portion 9 is provided with a first bent portion 13 at the right end of the fifth connection portion 11, and the first bent portion 13 is provided between the fifth connection portion 11 and the third connection portion 9. With this configuration, the right end of the right half of the conductor is bent back toward the left. The lower end of the third connection portion 9 is located between the fifth connection portion 11 and the first connection portion 7. The fifth connection portion 11, the third connection portion 9, and the first connection portion 7 are arranged on the same axis, so that the third connection portion 9 has a large pressing force.

[0056] The fourth connection portion 10 has a smaller pressing force than the third connection portion 9. The fourth connection portion 10 is connected to the fifth connection portion 11 by the second bent portion 14. The fourth connection portion 10 is generally L-shaped. The second bent portion 14 is provided at the left end portion of the fifth connection portion 11. With this configuration, in the left half of the conductor, the left end is bent back toward the lower right.

[0057] As is clear from the above description, the first terminal 5 and the second terminal 6 have portions that contact each other in the up-down direction and portions that contact each other in the left-right direction.

[0058] Therefore, in the connection device 1 of the present disclosure, the first terminal 5 and the second terminal 6 are electrically and stably connected to each other.

[0059] In addition, the natural frequency fz of the elasticity for obtaining the pressing force in the up-down direction and the natural frequency fy of the elasticity for obtaining the pressing force in the left-right direction may be different from each other. By having different natural frequencies, even if one of the third connection part 9 and the fourth connection part 10 resonates with the vibration of the connection device 1 when vibration occurs in the connection device 1, the other does not resonate with the vibration of the connection device 1. Therefore, it is possible to prevent the contact states of both the third connection part 9 and the fourth connection part 10 from becoming unstable at the same time.

[0060] The electrical connection between the first terminal 5 and the second terminal 6 is maintained by at least one of the mutual contact between the third connection portion 9 and the first connection portion 7, or the mutual contact between the fourth connection portion 10 and the second connection portion 8. Thus, in the connection device 1 of the present disclosure, it is possible to maintain high reliability in the mutual electrical connection between the first terminal 5 and the second terminal 6.

[0061] It is preferable that the natural frequency fy of the elasticity for obtaining a pressing force in the left-right direction be greater than the natural frequency fz of the elasticity for obtaining a pressing force in the up-down direction.

[0062] Generally, the natural frequency is determined by the elastic modulus of the third connection portion 9 and the elastic modulus of the fourth connection portion 10. As mentioned above, the second substrate 3, which is provided in a plate-like or planar shape, is likely to vibrate due to an external force. The amount of change in the distance between the first terminal 5 and the second terminal 6 in the direction in which the axis 4Z of the protrusion 4 extends (up-down direction) is likely to be larger than the amount of change in the distance between the first terminal 5 and the second terminal 6 in the direction perpendicular to the axis 4Z (left-right direction). Therefore, the third connection portion 9 is more likely to bend than the fourth connection portion 10. Therefore, it is preferable that the third connection portion 9 has a smaller elastic modulus than the fourth connection portion 10. In other words, it is preferable that the natural frequency fy when the fourth connection portion 10 presses the second connection portion 8 is set to be larger than the natural frequency fz when the third connection portion 9 presses the first connection portion 7. It is preferable to set the dimensions of the first bent portion 13 and the third connection portion 9 so as to maintain these relationships. The vertical dimension of the connection device 1 can be set arbitrarily, and the connection device 1 can also be made thinner.

[0063] Furthermore, if the substrate resonance frequency fb at which the first substrate 2 is most likely to vibrate in the vertical direction and the natural frequency fz of the elasticity for obtaining a pressing force in the vertical direction are set to different values, the effect of the present disclosure is further improved.

[0064] 2, when two fourth connecting parts 10 are provided, it is effective if the natural frequency fy1 of one fourth connecting part 10 and the natural frequency fy2 of the other fourth connecting part 10 have different values. Similarly, when two third connecting parts 9 are provided, it is effective if the natural frequency fz1 of one third connecting part 9 and the natural frequency fz2 of the other fourth connecting part 10 have different values.

[0065] As a result, the electrical connection between the first terminal 5 and the second terminal 6 is maintained by at least one of the four connection parts, and the connection can be made more reliable than if there were only two connection parts.

[0066] It is desirable to set the values ​​of the natural frequencies fy1 and fy2 to be greater than the values ​​of the natural frequencies fz1 and fz2.

[0067] The number of fourth connection parts 10 and third connection parts 9 provided does not need to be one or two, and may be three or more. Even when three or more fourth connection parts 10 or three or more third connection parts 9 are provided, high reliability can be obtained by making the natural frequencies of the respective connection parts different.

[0068] (Embodiment 2) Next, a second embodiment will be described with reference to Fig. 3. Fig. 3 is a perspective view showing a part of a connection device according to the second embodiment of the present disclosure.

[0069] In addition, the same components as those in the first embodiment described with reference to FIG. 2 may be denoted by the same reference numerals and described below.

[0070] The configurations of the first embodiment shown in FIG. 2 and the second embodiment shown in FIG. 3 differ in the following respects.

[0071] In the first embodiment shown in Fig. 2, the second terminal 6 has two fourth connection portions 10, whereas in the second embodiment shown in Fig. 3, the second terminal 6 has one fourth connection portion 10. Furthermore, in the third embodiment, a third bent portion 17 protruding from the fifth connection portion 11 and a seventh connection portion 16 extending from the third bent portion 17 are provided.

[0072] The other configurations are similar to those of the first embodiment shown in FIG. 2, so the same reference numerals are used and the description is omitted.

[0073] 3, for the first terminal 5, the first connection portion 7, the second connection portion 8, and the sixth connection portion 15 are electrically coupled to each other. For the second terminal 6, the third connection portion 9, the fourth connection portion 10, and the seventh connection portion 16 are electrically coupled to each other. The third bent portion 17 is located between the seventh connection portion 16 and the fifth connection portion 11.

[0074] The seventh connection portion 16 comes into contact with the sixth connection portion 15 of the first terminal 5. In the connection device 1 shown in Fig. 3, the second terminal 6 is formed of a single conductor. In this embodiment, the first terminal 5 is formed by bending a plate-shaped conductor.

[0075] The second terminal 6 has a fifth connection portion 11 electrically coupled to each of the third connection portion 9, the fourth connection portion 10, and the seventh connection portion 16. The third connection portion 9, the fourth connection portion 10, the fifth connection portion 11, and the seventh connection portion 16 preferably have the same thickness.

[0076] As already explained, the first bent portion 13 is formed by bending the right end of the fifth connection portion 11 downward and further bending it. The second bent portion 14 is formed by bending the left end of the fifth connection portion 11 downward and further bending it. The third bent portion 17 is formed by bending the front end of the fifth connection portion 11 downward and further bending it. The portion between the fourth connection portion 10 and the fifth connection portion 11 corresponds to the second bent portion 14. The tip of the fourth connection portion 10 is bent so as to be L-shaped. With this configuration, the seventh connection portion 16 has elasticity in the front-rear direction. The pressing force of the seventh connection portion 16 is smaller than the pressing force of the third connection portion 9. It is sufficient that the pressing force of the seventh connection portion 16 is approximately equal to the pressing force of the fourth connection portion 10.

[0077] The elasticity of each connection portion can be set not only by the bending angle but also by the width dimension of the connection portion.

[0078] The reason for setting a difference in the pressing force of each connection part is that the second substrate 3, which is plate-like or planar, is prone to vibration due to external forces, and the amount of change in the distance between the first terminal 5 and the second terminal 6 in the direction in which the axis 4Z of the protrusion 4 extends (up and down direction) is likely to be greater than the amount of change in the distance between the first terminal 5 and the second terminal 6 in the direction perpendicular to the axis 4Z.

[0079] The first terminal 5 and the second terminal 6 are electrically connected to each other through contact between the first connection portion 7 and the third connection portion 9 in the up-down direction, contact between the fourth connection portion 10 and the second connection portion 8 in the left-right direction, and contact between the seventh connection portion 16 and the sixth connection portion 15 in the front-to-back direction.

[0080] With this configuration, the electrical connection between the first terminal 5 and the second terminal 6 can be maintained with high reliability regardless of the direction from which force is applied. [Industrial Applicability]

[0081] INDUSTRIAL APPLICABILITY The connection device of the present disclosure has the effect of being able to maintain a highly reliable electrical connection state between terminals, and is useful in various electrical devices. [Explanation of symbols]

[0082] 1 Connection device 2 First board 3 Second board 4 Protrusion 4A Top 4B Side 4C side 4Z axis 5 1st terminal 6 2nd terminal 7 First connection part 8 Second connection part 9 Third Connection 10 Fourth connection part 11 5th connection part 12 Fixtures 13 1st bending part 14 Second bending part 15 6th Connection 16 7th Connection 17 Third bend

Claims

1. A first substrate and a second substrate disposed above the first substrate and facing the first substrate; a protrusion provided on an upper surface of the first substrate and protruding from the first substrate toward the second substrate; A first terminal provided on the protruding portion; a second terminal provided on a lower surface of the second substrate and arranged to face the first terminal; Equipped with the first terminal has a first connection portion and a second connection portion, the first connection portion and the second connection portion being electrically coupled to each other; the second terminal has a third connection portion in contact with the first connection portion and a fourth connection portion in contact with the second connection portion, the third connection portion and the fourth connection portion being electrically coupled to each other; the third connection portion is located above the first connection portion, the second connection portion is located between the first side surface of the protruding portion and the fourth connection portion, the third connection portion has elasticity and presses the first connection portion; The fourth connection portion has elasticity and presses the second connection portion, the second terminal further includes a fifth connection portion located between the third connection portion and the fourth connection portion, the third connection portion is formed by folding back an end portion of the fifth connection portion, and the end portion of the third connection portion is located between the fifth connection portion and the first connection portion; Connection device.

2. A pressing force of the third connection portion against the first connection portion is greater than a pressing force of the fourth connection portion against the second connection portion. The connection device according to claim 1 .

3. The second terminal is fixed to the second substrate by the fifth connection portion.

3. A connection device according to claim 1 or 2.

4. the second terminal further includes a first bent portion located between the third connection portion and the fifth connection portion and a second bent portion located between the fourth connection portion and the fifth connection portion, The second terminal is formed of a single conductor. The connection device according to claim 3.

5. the first terminal further includes a sixth connection portion, the sixth connection portion, the first connection portion, and the second connection portion being electrically coupled to each other; the second terminal further includes a seventh connection portion in contact with the sixth connection portion, the seventh connection portion, the third connection portion, and the fourth connection portion being electrically coupled to each other; the sixth connection portion is located between the second side surface of the protruding portion and the seventh connection portion, The seventh connection portion has elasticity and presses the sixth connection portion. A connection device according to any one of claims 1 to 4.

6. the second terminal further includes the seventh connection portion and a third bent portion located between the seventh connection portion and the fifth connection portion, The second terminal is formed of a single conductor. The connection device according to claim 5.

7. The natural frequency of the third connection portion and the natural frequency of the fourth connection portion are different values. A connection device according to any one of claims 1 to 6.

8. the natural frequency of the third connection portion is smaller than the natural frequency of the fourth connection portion; The connection device according to claim 7.

9. The elastic modulus of the third connection portion and the elastic modulus of the fourth connection portion are different values. A connection device according to any one of claims 1 to 6.

10. The elastic modulus of the third connection portion is smaller than the elastic modulus of the fourth connection portion.

10. The connection device according to claim 9.

11. The elastic modulus of the third connection portion is smaller than the elastic modulus of the seventh connection portion.

7. A connection device according to claim 5 or 6.

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