JP2018113237A - Pressure contact connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure contact connector in which deflection is less between the other connection terminal of the pressure contact connector and a spring, and capable of ensuring electrical connection with the electrode terminal of the other board.SOLUTION: A pressure contact connector has one connection terminal formed on one side, the other connection terminal formed on the other side, and an elastic part of spiral shape formed between the one and the other connection terminals. The one and the other connection terminals and the elastic part are formed of a material having conductivity, and the elastic part is provided with a receiving part which abuts on the reverse side of the other connection terminal, when it is pushed to the one connection terminal side.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a pressure contact connector.

  In recent years, the trend toward miniaturization of electronic devices has progressed, and a pressure contact connector is used as a method for electrically connecting different substrates built in such electronic devices. This pressure contact connector is formed, for example, by bending a metal plate, and has one connection terminal and the other connection terminal, and there is elasticity between one connection terminal and the other connection terminal. Functions as a spring.

  In the pressure contact connector, one connection terminal of the pressure contact connector is electrically connected to the electrode terminal of one substrate by solder or the like, and the electrode terminal of the other substrate is brought into contact with the other connection terminal of the pressure contact connector. Thereby, the electrode terminal of one board | substrate and the electrode terminal of the other board | substrate can be electrically connected via a pressure-contact connector. At this time, the other connection terminal of the pressure contact connector is pushed by the electrode terminal of the other substrate, and the connection force between the one connection terminal and the other connection terminal of the pressure contact connector is contracted to generate a restoring force of the spring. By this restoring force, the other connection terminal of the pressure contact connector presses the electrode terminal of the other substrate, so that the contact between the other connection terminal of the pressure contact connector and the electrode terminal of the other substrate can be ensured.

JP 2006-1583 A

  By the way, since the pressure contact connector as described above is as small as about 1 to 2 mm, when the other connection terminal of the pressure contact connector is pushed by the electrode terminal of the other board, the connection portion between the other connection terminal of the pressure contact connector and the spring. May bend. In this way, in the pressure contact connector, when an unexpected force is applied, the connection portion between the other connection terminal and the spring may bend, and in this case, the position of the other connection terminal becomes unstable and stable. No electrical connection can be obtained.

  For this reason, there is a need for a pressure contact connector that can be reliably connected to the electrode terminal of the other substrate with less bending between the other connection terminal of the pressure contact connector and the connection portion of the spring. .

  According to one aspect of the present embodiment, one connection terminal portion formed on one side, the other connection terminal portion formed on the other side, the one connection terminal portion, and the other connection A spiral elastic part having elasticity formed between the terminal part and the one connection terminal part, the other connection terminal part and the elastic part are made of a conductive material. The elastic portion is provided with a receiving portion that contacts the back surface of the other connection terminal portion when the other connection terminal portion is pushed toward the one connection terminal portion. It is characterized by.

  According to the disclosed pressure contact connector, there is little bending between the other connection terminal of the pressure contact connector and the connection portion of the spring, and electrical connection with the electrode terminal of the other substrate can be reliably obtained.

A perspective view of a conventional pressure contact connector Side view of conventional pressure contact connector Explanatory drawing of pressure contact connector Perspective view (1) of the pressure contact connector in the present embodiment Perspective view (2) of the pressure contact connector in the present embodiment Structure diagram of pressure contact connector in this embodiment (1) Structure of pressure contact connector in this embodiment (2) Structure of pressure contact connector in this embodiment (3) Explanatory drawing (1) of the structure of the pressure-contact connector in this Embodiment Explanatory drawing (2) of the structure of the press-contact connector in this Embodiment Explanatory drawing (1) of the connection by the pressure welding connector in this Embodiment Explanatory drawing (2) of the connection by the press-contact connector in this Embodiment Explanatory drawing (3) of the connection by the press-contact connector in this Embodiment

  The form for implementing is demonstrated below. In addition, about the same member etc., the same code | symbol is attached | subjected and description is abbreviate | omitted. In the present application, the X1-X2 direction, the Y1-Y2 direction, and the Z1-Z2 direction are directions orthogonal to each other. A plane including the X1-X2 direction and the Y1-Y2 direction is referred to as an XY plane, a plane including the Y1-Y2 direction and the Z1-Z2 direction is referred to as a YZ plane, and the Z1-Z2 direction and the X1-X2 direction are referred to as a YZ plane. The plane including the surface is referred to as a ZX plane.

  First, a conventional pressure contact connector will be described in more detail with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, this pressure contact connector is provided between one connection terminal portion 910, the other connection terminal portion 920, and one connection terminal portion 910 and the other connection terminal portion 920. And a first spring portion 930. Further, a flat support portion 940 is provided on the back side of the other connection terminal portion 920, and a second spring portion 950 is provided between the one connection terminal portion 910 and the flat support portion 940. . One connection terminal portion 910 of the pressure contact connector is connected to the electrode terminal of one substrate by solder or the like, and the electrode terminal of the other substrate contacts one of the other connection terminal portions 920 of the pressure contact connector. The electrode terminal of the substrate and the electrode terminal of the other substrate are electrically connected.

  Accordingly, a convex contact portion 921 is provided on the other connection terminal portion 920. This pressure contact connector is formed by punching a metal plate and then bending it, and the contact portion 921 of the other connection terminal portion 920 is formed by pushing the metal plate from the back, so that the other connection The surface of the contact portion 921 of the terminal portion 920 is a curved surface. By the way, in such a pressure contact, the size of one connection terminal portion 910 is as extremely small as about 1.4 mm × 1.4 mm, and the thickness of the metal plate is as thin as about 0.1 mm.

  For this reason, when an unexpected force is applied to the other connection terminal portion 920 of the press contact connector, for example, when the electrode terminal of the other board contacts the other connection terminal portion 920 of the press contact connector, the other of the press contact connector The connecting terminal portion 920 and the first spring portion 930 may be bent at the connecting portion. As described above, when the connection portion between the other connection terminal portion 920 of the pressure contact connector and the first spring portion 930 is bent, the position of the other connection terminal portion 920 of the pressure contact connector becomes unstable, and the other connection of the pressure contact connector. A stable electrical connection cannot be obtained between the terminal portion 920 and the electrode terminal of the other substrate.

  This is particularly noticeable in the case of a low profile type with a low pressure connector. Specifically, when the other connection terminal portion 920 of the press-contact connector shown in FIG. 3A is pressed by contacting the portion where the electrode terminal of the other substrate is formed, it is shown in FIG. As described above, a part of the second spring portion 950 comes into contact with one connection terminal portion 910. For this reason, it cannot be pushed in any further, and if it is going to obtain the same stroke amount as usual, it cannot respond to low profile. As a method of solving this, as shown in FIG. 3C, the width of the second spring portion 950a is partially narrowed so that the contact between the second spring portion 950a and one connection terminal portion 910 is achieved. Possible ways to prevent this. In this case, since the width of the second spring portion 950a can be reduced, the second spring portion 950a can be pushed into the back, so that a reduction in height can be accommodated.

  However, if the width of the second spring portion 950a is narrowed, the strength is reduced by that amount, and the second spring portion 950a is likely to bend at a narrow portion, and the position of the other connection terminal portion 920 becomes more unstable. The restoring force in the second spring portion 950a is also reduced. For this reason, it becomes difficult to obtain a stable electrical connection between the other connection terminal portion 920 of the pressure contact connector and the electrode terminal of the other substrate.

(Pressure contact connector)
Next, the pressure contact connector in the present embodiment will be described with reference to FIGS. 4 is a perspective view of the pressure contact connector in the present embodiment as seen from the front side, and FIG. 5 is a perspective view of the pressure contact connector as seen from the back side. 6A is a top view of the pressure contact connector in the present embodiment, FIG. 6B is a bottom view, FIG. 7A is a front view, FIG. 7B is a rear view, and FIG. Is a right side view, and FIG. 8B is a left side view.

  The pressure contact connector in the present embodiment includes one connection terminal portion 10 provided on one side, the other connection terminal portion 20 provided on the other side, one connection terminal portion 10 and the other connection terminal portion 20. The first spring portion 30 is connected. A flat support portion 40 is provided on the back side of the other connection terminal portion 20, and the flat support portion 40 and one connection terminal portion 10 are connected by a second spring portion 50. This pressure contact connector is formed of a conductive material. Specifically, the metal plate is formed by punching and then bending, and the thickness of the metal plate is, for example, about 100 μm.

  One connection terminal portion 10 is formed so that a surface connected to an electrode terminal of one substrate (not shown) by solder or the like is substantially flat, and has a substantially square shape with one side of about 1.4 mm. Is formed. As shown in the drawing, one connection terminal portion 10 is formed substantially flat so that a surface connected to an electrode terminal of one substrate (not shown) is parallel to the XY plane.

  The first spring portion 30 is formed in a rectangular spiral shape from one connection terminal portion 10 to the other connection terminal portion 20. Specifically, the first spring portion 30 is bent at a substantially right angle in the Z1 direction at the lower bent portion 11 with respect to one connecting terminal portion 10 parallel to the XY plane, so that the first spring portion 30 is parallel to the ZX plane. 1 side surface portion 31 is formed. Further, the second side surface portion 33 is formed by bending the first side surface portion 31 at the first bent portion 32 at a substantially right angle in the Y2 direction. Further, the third side surface portion 35 is formed by bending the second side surface portion 33 at the second bent portion 34 at a substantially right angle in the X2 direction. Further, the fourth side surface portion 37 is formed by bending the third side surface portion 35 at the third bent portion 36 at a substantially right angle in the Y1 direction.

  Accordingly, the first spring part 30 includes the first side part 31, the first bent part 32, the second side part 33, the second bent part 34, the third side part 35, and the third bent part. 36, formed by the fourth side surface portion 37, and has a spring property that expands and contracts in the Z1-Z2 direction. In addition, the surface of the metal plate of the 1st side surface part 31, the 2nd side surface part 33, the 3rd side surface part 35, and the 4th side surface part 37 in the 1st spring part 30 is substantially parallel to Z1-Z2 direction. It is.

  The other connection terminal portion 20 is formed by bending the fourth side surface portion 37 at an upper bent portion 38 at a substantially right angle in the X1 direction, and is formed substantially parallel to the XY plane. For this reason, the 1st spring part 30 has a spring property in the direction which expands and contracts between the one connection terminal part 10 and the other connection terminal part 20. FIG. In this application, the 1st spring part 30 may be described as a 1st elastic part.

  In the present embodiment, a first vertical support portion 61 is formed on the third side surface portion 35 of the first spring portion 30 so as to protrude in the Z1 direction side, which is the other connection terminal portion 20 side. Yes. The first vertical support portion 61 supports the other connection terminal portion 20 when the other connection terminal portion 20 is pressed. Therefore, in a top view of the pressure contact connector, a part of the first vertical support portion 61 is covered with the other connection terminal portion 20, and the metal plate of the first vertical support portion 61 formed by punching is used. The surface in the plate thickness direction faces the back side of the other connection terminal portion 20. Further, the width of the third bent portion 36 and the like between the third side surface portion 35 where the first vertical support portion 61 is formed and the upper bent portion 38 is the other portion of the first spring portion 30. That is, the first side surface portion 31, the first bent portion 32, the second side surface portion 33, the second bent portion 34, and the third side surface portion 35 are formed narrower. Thus, by reducing the width of the third bent portion 36 and the like of the first spring portion 30, it is possible to reduce the height.

  The other connection terminal portion 20 is in contact with and electrically connected to an electrode terminal of the other substrate (not shown), and is provided around a flat portion 21 that forms a part of a circular shape and the flat portion 21. In addition, the first protrusion 22, the second protrusion 23, and the third protrusion 24 are provided. The flat portion 21 is formed so as to be substantially parallel to the one connection terminal portion 10. The tip 22a of the first protrusion 22, the tip 23a of the second protrusion 23, and the tip 24a of the third protrusion 24 are sharp. Thus, by sharpening the tip 22a of the first protrusion 22, the tip 23a of the second protrusion 23, and the tip 24a of the third protrusion 24, the other substrate is formed by the tips 22a, 23a, and 24a. Even when the electrode terminal is formed of aluminum or the like, the oxide film on the surface can be broken and the electrode terminal of the other substrate can be electrically connected.

  As shown in FIGS. 9 and 10, the second spring portion 50 is formed in a rectangular spiral shape from one connection terminal portion 10 to the flat support portion 40. FIG. 9 is a top view of the state shown in FIG. 8 (b) after cutting along the alternate long and short dash line 8A-8B and removing the other connection terminal portion 20, and FIG. 10 is a perspective view of this state.

  Specifically, the second spring portion 50 is bent in a direction substantially perpendicular to the Z1 direction at the lower bent portion 12 with respect to one connection terminal portion 10 parallel to the XY plane, thereby providing a second spring portion 50 parallel to the ZX plane. 1 side surface portion 51 is formed. Further, the second side surface portion 53 is formed by bending the first side surface portion 51 at a first bent portion 52 at a substantially right angle in the Y1 direction. Further, the third side surface portion 55 is formed by bending the second side surface portion 53 at the second bent portion 54 at a substantially right angle in the X1 direction. Further, the fourth side surface portion 57 is formed by bending the third side surface portion 55 at the third bent portion 56 at a substantially right angle in the Y2 direction. Further, the fifth side surface portion 59 is formed by bending the fourth side surface portion 57 at the fourth bent portion 58 at a substantially right angle in the X2 direction.

  Accordingly, the second spring part 50 includes the first side part 51, the first bent part 52, the second side part 53, the second bent part 54, the third side part 55, and the third bent part. 56, a fourth side surface portion 57, a fourth bent portion 58, and a fifth side surface portion 59, and has a spring property that expands and contracts in the Z1-Z2 direction. In addition, the surface of the metal plate of the 1st side surface part 51 in the 2nd spring part 50, the 2nd side surface part 53, the 3rd side surface part 55, the 4th side surface part 57, and the 5th side surface part 59 is as follows. It is parallel to the Z1-Z2 direction.

  The flat support portion 40 is formed by bending the fifth side surface portion 59 at a substantially right angle in the Y1 direction at the upper bent portion 41, and is formed substantially parallel to the XY plane. The flat support portion 40 is formed on the back side of the other connection terminal portion 20, that is, on the Z2 direction side which is the side of the one connection terminal portion 10, and the flat support portion 40 and the other connection terminal portion 20 are flat. It is formed so as to be substantially parallel to the portion 21. Accordingly, the second spring portion 50 expands and contracts between one connection terminal portion 10 and the flat support portion 40, that is, between one connection terminal portion 10 and the other connection terminal portion 20. Has springiness in the direction. In this application, the 2nd spring part 50 may be described as a 2nd elastic part.

  Further, in the present embodiment, the second vertical support portion 62 that supports the flat support portion 40 when the flat support portion 40 is pressed against the fourth side surface portion 57 of the second spring portion 50. Is formed. As shown in FIG. 9, a part of the second vertical support part 62 is covered with the flat support part 40, and the thickness of the metal plate of the second vertical support part 62 formed by punching is used. Is formed so as to face the back side of the flat support portion 40. Further, the width of the fourth bent portion 58 and the like between the fourth side surface portion 57 where the second vertical support portion 62 is formed and the upper bent portion 41 is the other part of the second spring portion 50. That is, the first side part 51, the first bent part 52, the second side part 53, the second bent part 54, the third side part 55, the third bent part 56, and the fourth side part. It is formed thinner than 57. Thus, by reducing the width of the fourth bent portion 58 and the like of the second spring portion 50, it is possible to reduce the height.

(Connection by pressure contact connector)
Next, the connection between the board and the board using the pressure connector in the present embodiment will be described with reference to FIGS. 11 to 13 corresponds to the cross section taken along the alternate long and short dash line 6A-6B in FIG.

  First, as shown in FIG. 11, one connection terminal portion 10 of the pressure contact connector in the present embodiment is connected to the electrode terminal 111 of one substrate 110 by solder or the like.

  Next, as shown in FIG. 12, the electrode terminal 121 of the other substrate 120 is brought into contact with the first protrusion 22 of the other connection terminal portion 20 of the pressure contact connector in the present embodiment, and the other substrate 120. Is pushed to the other connecting terminal portion 20 side. Thus, when the other connection terminal portion 20 is pushed by the other substrate 120, first, the first spring portion 30 is deformed, and the other connection terminal portion 20 moves toward the one connection terminal portion 10, The space between the other connection terminal portion 20 and the one connection terminal portion 10 becomes narrow. As a result, the other connection terminal portion 20 comes into contact with the flat support portion 40 provided on the back surface of the other connection terminal portion 20, and the flat support portion 40 is connected to the one connection terminal portion 10 by the other connection terminal portion 20. Since it is pushed to the side, the second spring portion 50 is also deformed.

  At this time, the back surface 20a of the other connection terminal portion 20 and the first vertical support portion 61 provided on the third side surface portion 35 of the first spring portion 30 are in contact with each other, and the other connection terminal portion 20 is The first spring part 30 is supported by the first vertical support part 61. For this reason, the other connecting terminal portion 20 is not further bent at the upper bent portion 38, and the position of the other connecting terminal portion 20 does not move. In addition, the 1st vertical support part 61 is supporting the back surface 20a of the other connection terminal part 20 with the surface of the plate | board thickness direction of the metal plate of the 1st vertical support part 61 formed by stamping.

  Further, the back surface 40a of the flat support portion 40 and the second vertical support portion 62 provided on the fourth side surface portion 57 of the second spring portion 50 are in contact with each other, and the flat support portion 40 is the second spring portion. 50 second vertical supports 62 are supported. The flat support portion 40 does not bend any more in the upper bent portion 41, and the position of the flat support portion 40 does not move. The second vertical support portion 62 supports the back surface 40a of the flat support portion 40 by the surface of the metal plate of the second vertical support portion 62 formed by punching in the thickness direction.

  Thus, even if the other connection terminal portion 20 is pressed by the electrode terminal 121 of the other substrate 120, the flat connection portion 40 and the first spring portion 30 are provided on the back surface 20 a of the other connection terminal portion 20. The first vertical support portion 61 is supported. Further, the back surface 40 a of the flat support portion 40 is supported by a second vertical support portion 62 provided on the second spring portion 50. Therefore, the other connection terminal portion 20 includes a flat support portion 40, a first vertical support portion 61 provided on the first spring portion 30, and a second vertical support provided on the second spring portion 50. Supported by the portion 62. For this reason, even if the other connection terminal part 20 is pushed by the electrode terminal 121 of the other board | substrate 120, the other connection terminal part 20 does not bend in the upper bending part 38, but the other connection terminal part 20 This position is stable, and electrical connection with the electrode terminal 121 of the other substrate 120 can be obtained with certainty.

  In the present embodiment, there is a portion where the first spring portion 30 and the second spring portion 50 are formed to be thin in order to reduce the height, but the other connection terminal portion 20 is pressed. When this is done, the other connection terminal portion 20 is connected to the flat support portion 40, the first vertical support portion 61 provided on the first spring portion 30, and the second spring portion 50 provided on the second spring portion 50. It is supported by two vertical support portions 62. For this reason, even if the other connection terminal portion 20 is pushed by the electrode terminal 121 of the other substrate 120, the other connection terminal portion 20 is not bent at the upper bent portion 38.

  Furthermore, as shown in FIG. 13, the other board | substrate 120 is pushed to the other connection terminal part 20 side of a press-contact connector. As a result, the first spring portion 30 and the second spring portion 50 are further deformed, and the other connection terminal portion 20 of the one connection terminal portion 10 remains in a state where the back surface is in contact with the flat support portion 40. The distance between the other connection terminal portion 20 and the one connection terminal portion 10 becomes narrower. At this time, when the height is lowered, a gap is formed between one connection terminal portion 10 and the first spring portion 30 and between one connection terminal portion 10 and the second spring portion 50. And the width of each gap is substantially equal.

  Although the embodiment has been described in detail above, it is not limited to the specific embodiment, and various modifications and changes can be made within the scope described in the claims.

DESCRIPTION OF SYMBOLS 10 One connection terminal part 20 The other connection terminal part 20a Back surface 21 Flat part 22 1st projection part 23 2nd projection part 24 3rd projection part 25 Surrounding reinforcement part 30 1st spring part 31 1st side surface Part 32 first bent part 33 second side part 34 second bent part 35 third side part 36 third bent part 37 fourth side part 38 upper bent part 40 flat support part 40a back face 41 upper bent part Part 50 second spring part 51 first side part 52 first bent part 53 second side part 54 second bent part 55 third side part 56 third bent part 57 fourth side part 58 Fourth bent portion 59 Fifth side surface portion 61 First vertical support portion 62 Second vertical support portion 110 One substrate 111 Electrode terminal 120 Other substrate 121 Electrode terminal

Claims (11)

One connection terminal portion formed on one side;
The other connection terminal portion formed on the other side;
A spiral elastic portion having elasticity formed between the one connection terminal portion and the other connection terminal portion;
Have
The one connection terminal part, the other connection terminal part and the elastic part are made of a conductive material,
The elastic portion is provided with a receiving portion that abuts against the back surface of the other connection terminal portion when the other connection terminal portion is pushed toward the one connection terminal portion. Pressure contact connector.   The press contact connector according to claim 1, wherein the receiving portion is covered with the one connection terminal portion.   The press-connecting connector according to claim 1, wherein the elastic portion is formed in a rectangular spiral shape.   The width between the other connecting terminal portion and the receiving portion in the elastic portion is narrower than the width between the one connecting terminal portion and the receiving portion. The pressure contact connector according to any one of the above.   The elastic portion is formed of a bent metal plate, and the back surface of the other connection terminal portion and the surface in the plate thickness direction of the metal plate forming the receiving portion in the elastic portion are opposed to each other. The press-connecting connector according to claim 1, wherein the press-connecting connector is provided. One connection terminal portion formed on one side;
The other connection terminal portion formed on the other side;
A spiral-shaped first elastic portion having elasticity formed between the one connection terminal portion and the other connection terminal portion;
A support portion provided on the back side of the other connection terminal portion;
A helical second elastic portion having elasticity formed between the support portion and the one connection terminal portion;
Have
The one connection terminal portion, the other connection terminal portion, the first elastic portion, the support portion, and the second elastic portion are formed of a conductive material,
When the other connection terminal portion is pushed toward the one connection terminal portion, the back surface of the other connection terminal portion is in contact with the support portion;
The second elastic portion is provided with a receiving portion that comes into contact with the back surface of the support portion when the other connection terminal portion is pushed toward the one connection terminal portion. Pressure contact connector.   The first elastic portion is provided with a receiving portion that comes into contact with the back surface of the other connection terminal portion when the other connection terminal portion is pushed toward the one connection terminal portion. The pressure contact connector according to claim 6. The pressure contact connector according to claim 6 or 7, wherein the first elastic part and the second elastic part are formed in a rectangular spiral shape.
The second elastic part is formed of a bent metal plate,
The back surface of the support portion and the surface in the plate thickness direction of the metal plate forming the receiving portion in the second elastic portion are opposed to each other. The indicated pressure contact connector.   6. The pressing device according to claim 1, wherein when the other connecting terminal portion is pressed toward the one connecting terminal portion, the other connecting terminal portion is pressed while being in contact with the receiving portion of the elastic portion. The pressure contact connector according to any one of the above.   When the other connecting terminal portion is pushed toward the one connecting terminal portion, the second connecting terminal portion is in contact with the receiving portion of the first elastic portion and the receiving portion of the second elastic portion. The press-connecting connector according to claim 6, wherein the connector is pressed.