JP7240901B2 - IDC connector - Google Patents

Description

The present invention relates to an insulation displacement connector.

In recent years, there has been a trend toward miniaturization of electronic equipment, and press-connecting connectors are used as a method for electrically connecting different substrates built in such electronic equipment. This press-connecting connector is formed by bending a metal plate, for example, and has one connecting terminal and the other connecting terminal, and an elastic spring is provided between the one connecting terminal and the other connecting terminal. Function.

In the pressure contact connector, one connection terminal of the pressure contact connector is electrically connected to the electrode terminal of one substrate by soldering or the like, and the other connection terminal of the pressure contact connector is brought into contact with the electrode terminal of the other substrate. Thereby, the electrode terminals of one substrate and the electrode terminals of the other substrate can be electrically connected through the press-connecting 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 gap between the one connection terminal and the other connection terminal of the pressure contact connector is contracted, thereby generating the restoring force of the spring. With this restoring force, the other connection terminal of the pressure contact connector presses the electrode terminal of the other board, thereby ensuring contact between the other connection terminal of the pressure contact connector and the electrode terminal of the other board.

JP 2016-1583 A JP 2013-167616 A

By the way, the press-connecting connector as described above is mounted on a portable communication device or the like, and is extremely small because it is formed by bending a thin metal plate. Since such pressure-contact connectors can be easily contacted, their use in applications other than portable communication devices, such as vehicles such as automobiles, has been studied.

However, when it is used in a vehicle such as an automobile, it is necessary to flow a large current, and in a vehicle such as an automobile, the electronic components used are large, so the stroke length must be long. For this reason, pressure-contact connectors used in portable communication devices and the like cannot be used as they are.

Therefore, there is a demand for an insulation displacement connector that can pass a large current and has a long stroke.

According to one aspect of the present embodiment, a base portion, a movable portion movable with respect to the base portion, and between the base portion and the movable portion, one end is on the side of the base portion, and the other end is on the side of the base portion. An elastic member provided between the base portion and the movable portion and having a restoring force in a direction in which the base portion and the movable portion are separated from each other. and a member, wherein electrical connection is made by the conductive member.

According to the disclosed insulation displacement connector, a large current can flow and the stroke length can be lengthened.

Perspective view of a conventional insulation displacement connector Side view of a conventional insulation displacement connector 1 is a perspective view of an insulation displacement connector according to a first embodiment; FIG. FIG. 1 is a front view of an insulation displacement connector according to a first embodiment; Side view of an insulation displacement connector according to the first embodiment 1 is an exploded perspective view of an insulation displacement connector according to a first embodiment; FIG. Sectional view of an insulation displacement connector according to the first embodiment Front view of the base portion of the insulation displacement connector according to the first embodiment FIG. 2 is a perspective view of the base portion of the insulation displacement connector according to the first embodiment; 1 is a perspective view of a movable portion of an insulation displacement connector according to a first embodiment; FIG. 1 is a perspective view of a conductive member of an insulation displacement connector according to a first embodiment; FIG. FIG. 2 is a side view of the conductive member of the insulation displacement connector according to the first embodiment; FIG. 2 is a top view of the conductive member of the insulation displacement connector according to the first embodiment; Explanatory drawing (1) of pressure contact connector in the first embodiment Explanatory drawing (2) of pressure contact connector in the first embodiment Explanatory drawing (3) of pressure contact connector in the first embodiment Explanatory drawing (4) of pressure contact connector in the first embodiment Structural drawing of an insulation displacement connector according to the second embodiment

The form for carrying out is demonstrated below. In addition, the same reference numerals are assigned to the same members and the description thereof is omitted. In the present application, the X1-X2 direction, the Y1-Y2 direction, and the Z1-Z2 direction are mutually orthogonal directions. Further, a plane including the X1-X2 direction and the Y1-Y2 direction is referred to as the XY plane, a plane including the Y1-Y2 direction and the Z1-Z2 direction is referred to as the YZ plane, and the Z1-Z2 direction and the X1-X2 direction are referred to as the XY plane. The containing plane is described as the ZX plane.

[First embodiment]
First, a conventional insulation displacement connector will be described in more detail with reference to FIGS. 1 and 2. FIG. As shown in FIGS. 1 and 2, this press-connecting connector has one connection terminal portion 910 and the other connection terminal portion 920. The one connection terminal portion 910 and the other connection terminal portion 920 are are connected by a first spring portion 930 . One connection terminal portion 910 of the pressure contact connector is connected to the electrode terminal of one substrate by soldering or the like, and the electrode terminal of the other substrate contacts the other connection terminal portion 920 of the pressure contact connector, thereby An electrode terminal of one substrate and an electrode terminal of the other substrate are electrically connected.

For this reason, the other connection terminal portion 920 is provided with a convex contact portion 921 . This press-connecting 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 out the metal plate from the back side. The surface of the contact portion 921 of the terminal portion 920 is curved. A terminal supporting portion 940 is provided between the one connecting terminal portion 910 and the other connecting terminal portion 920, which is the back side of the other connecting terminal portion 920. The terminal supporting portion 940 and the one connecting terminal It is connected to the portion 910 by a second spring portion 950 .

Therefore, when electrically connecting the pressure contact connector, the electrode terminals of the other board come into contact with the other connection terminal portion 920 of the pressure contact connector, and the electrode terminals of the other board contact the other connection terminal of the pressure contact connector. The portion 920 is pushed and the insulation displacement connector is deformed. At this time, the first spring portion 930 and the second spring portion 950 are deformed, and a restoring force acts in the direction of pushing the electrode terminals of the other substrate.

Such pressure-contact connectors are mounted on portable electronic devices such as smartphones, etc., and are small. is, for example, about 0.6 mm. In addition, the pressure contact connector as described above is formed by punching and bending a single metal plate. The resistance value at 950 is 15 mΩ.

On the other hand, in applications such as in-vehicle use, if the resistance value is high, a large current, for example, a current value of 15 A cannot flow. Here, if the thickness of the first spring portion 930 and the second spring portion 950 is increased in order to allow a large current to flow, the function as a spring is lost. In addition, if the thickness is reduced in order to ensure the function as a spring, the resistance increases, so that a large current cannot flow. Thus, in the press-connecting connector shown in FIGS. 1 and 2, there is a trade-off between the function as a spring and the flow of a large current.

Therefore, there is a demand for an insulation displacement connector that can be used in vehicles such as automobiles, has a long stroke length, and allows a large amount of current to flow.

(pressure contact connector)
Next, an insulation displacement connector according to the first embodiment will be described with reference to FIGS. 3 to 7. FIG. 3 is a perspective view of the insulation displacement connector according to the present embodiment, FIG. 4 is a front view, FIG. 5 is a side view, FIG. 6 is an exploded perspective view, and FIG. 7 is a sectional view. be.

The press-connecting connector in this embodiment has a base portion 10, a movable portion 20, a conductive member 30, a coil spring 40 as an elastic member, and the like. The base portion 10 and the movable portion 20 are made of an insulating resin material or the like, and the conductive member 30 is made of a conductive metal material such as copper (Cu).

As shown in FIGS. 8 and 9, the base portion 10 includes a base body portion 11 parallel to the XY plane and two columnar support portions 12 extending from the base body portion 11 in the Z1 direction. . 8 is a front view of the base portion 10, and FIG. 9 is a perspective view. The strut portions 12 are provided on the X1 side and the X2 side of the base body portion 11, respectively. A hook portion 13 serving as a barb having a shape wider in the circumferential direction than the other portion of the support portion 12 is provided at the end portion of the support portion 12 on the Z1 side. A groove portion 14 is formed toward the Z2 side from the side end to form a space. Therefore, the portion of the post 12 where the hook 13 is provided can be deformed toward the center of the space of the groove 14 .

In the base body 11, a support opening 15 recessed in the Z2 direction is provided around the portion where the support 12 is provided so that one end of the coil spring 40 can be inserted therein. A support groove 16 for supporting one end of the conductive member 30 is provided on the Z2 side of the base main body 11 between the two support columns 12 .

As shown in FIG. 10, the movable portion 20 is provided with a through hole 21 penetrating in the Z1-Z2 direction on each of the X1 side and the X2 side. The through-holes 21 are provided corresponding to the pillars 12 of the base 10 and are formed so that the pillars 12 of the base 10 can be inserted therein. An engaging portion 22 having a narrower diameter is provided in the middle of the through hole 21 . When the hook portion 13 at the Z1 side end of the support portion 12 of the base portion 10 enters the Z1 side of the locking portion 22 , the hook portion 13 is hooked on the locking portion 22 of the movable portion 20 . Therefore, it is possible to prevent the post 12 of the base 10 from easily falling out of the through hole 21 of the movable part 20 .

A support portion 23 is formed in the central portion of the movable portion 20 for supporting a fourth flat plate portion 30g, which is the other end of the conductive member 30 and will be described later.

As shown in FIGS. 11 to 13, the conductive member 30 is formed by bending a piece of stamped copper plate or the like. 11 is a perspective view of the conductive member 30, FIG. 12 is a side view, and FIG. 13 is a top view. As shown in FIGS. 11 and 12, the conductive member 30 has a first flat plate portion 30a, a first bent portion 30b, a second flat plate portion 30c, and a second bent portion from one end toward the other end. The portion 30d, the third flat plate portion 30e, the third bent portion 30f, and the fourth flat plate portion 30g are formed in this order. The conductive member 30 is formed by bending at an angle of slightly less than 180° along the X1-X2 direction at the first bent portion 30b, the second bent portion 30d, and the third bent portion 30f.

A first flat plate portion 30a at one end of the conductive member 30 is formed substantially parallel to the XY plane, and is provided with lower protrusions 31 extending toward the X1 side and the X2 side. A fourth flat plate portion 30g at the other end of the conductive member 30 is formed substantially parallel to the XY plane, and is provided with upper protrusions 32 extending on the X1 side and the X2 side. Spring portions 33, 34 are provided extending from portion 30g.

As shown in FIG. 13, the spring portion 33 is provided on the X1 side of the fourth flat plate portion 30g, and includes a first flat plate portion 33a, a first bent portion 33b, a second flat plate portion 33c, and a second bent portion. The portion 33d, the third flat plate portion 33e, the third bent portion 33f, and the fourth flat plate portion 33g are formed in this order. The first flat plate portion 33a is formed by bending the X1 side of the fourth flat plate portion 30g of the conductive member 30 substantially perpendicularly to the Z1 side along the Y1-Y2 direction. The second flat plate portion 33c is formed by bending the Y1 side of the first flat plate portion 33a at the first bent portion 33b substantially vertically along the Z1-Z2 direction in the X2 direction. The third flat plate portion 33e is formed by bending the X2 side of the second flat plate portion 33c at the second bent portion 33d substantially vertically along the Z1-Z2 direction in the Y2 direction. Incidentally, as shown in FIG. 13 and the like, the second bent portion 33d may be formed by bending twice by 45°. The fourth flat plate portion 33g is formed by bending the Y2 side of the third flat plate portion 33e at the third bent portion 33f substantially vertically along the Z1-Z2 direction in the X1 direction. A contact portion 33h with a sharp tip is formed at the end of the fourth flat plate portion 33g on the Z1 side.

The spring portion 34 is provided on the X2 side of the fourth flat plate portion 30g, and includes a first flat plate portion 34a, a first bent portion 34b, a second flat plate portion 34c, a second bent portion 34d, and a third flat plate portion 34e. , the third bent portion 34f, and the fourth flat plate portion 34g. The first flat plate portion 34a is formed by bending the X2 side of the fourth flat plate portion 30g of the conductive member 30 substantially perpendicularly to the Z1 side along the Y1-Y2 direction. The second flat plate portion 34c is formed by bending the Y2 side of the first flat plate portion 34a substantially perpendicularly in the X1 direction along the Z1-Z2 direction at the first bent portion 34b. The third flat plate portion 34e is formed by bending the X1 side of the second flat plate portion 34c at the second bent portion 34d substantially vertically along the Z1-Z2 direction in the Y1 direction. Incidentally, as shown in FIG. 13 and the like, the second bent portion 34d may be formed by bending twice by 45°. The fourth flat plate portion 34g is formed by bending the Y1 side of the third flat plate portion 34e at the third bent portion 34f substantially vertically along the Z1-Z2 direction in the X2 direction. A contact portion 34h with a sharp tip is formed at the end of the fourth flat plate portion 34g on the Z1 side.

Therefore, since the spring portions 33 and 34 are spirally formed and have elasticity, they can be deformed and bent in the Z1-Z2 direction. The first flat plate portion 33a and the third flat plate portion 33e of the spring portion 33, and the first flat plate portion 34a and the third flat plate portion 34e of the spring portion 34 are surfaces substantially parallel to the YZ plane. The second flat plate portion 33c and the fourth flat plate portion 33g of the spring portion 33, and the second flat plate portion 34c and the fourth flat plate portion 34g of the spring portion 34 are surfaces substantially parallel to the ZX plane.

The coil spring 40 is a spirally wound spring, is deformable in the Z1-Z2 direction, and has elasticity.

As shown in FIGS. 7, 14, etc., the press-connecting connector of the present embodiment has a lower projection 31 at one end of a conductive member 30 inserted into a support groove 16 of a base main body 11 of a base 10. As shown in FIG. The conductive member 30 is supported by the base portion 10 . The strut portion 12 of the base portion 10 is placed inside the coil of the coil spring 40, and one end of the coil spring 40 is put into and supported by the support opening 15 around the strut portion 12 of the base portion 10. ing.

In the press-connecting connector of the present embodiment, a first flat plate portion 30a at one end of the conductive member 30 on the base portion 10 side is electrically connected to an electrode terminal on a substrate or the like (not shown). Further, the contact portion 33h of the spring portion 33 and the contact portion 34h of the spring portion 34 at the other end of the conductive member 30 on the movable portion 20 side come into contact with the electrode terminal 100 such as a bus bar. As a result, the electrode terminal connected to the first flat plate portion 30a at one end of the conductive member 30 and the spring portion 33 at the other end of the conductive member 30 through the conductive member 30 of the press-connecting connector of the present embodiment are connected. The contact portion 33h and the electrode terminal in contact with the contact portion 34h of the spring portion 34 are electrically connected.

The hook portion 13 provided at the end of the support portion 12 of the base portion 10 is inserted in the through hole 21 of the movable portion 20, and the Z2 side of the hook portion 13 is the engaging portion of the through hole 21 of the movable portion 20. 22 and is formed so as not to come off. The other end of the coil spring 40 is in contact with the Z2 side of the movable portion 20, and a restoring force extending in the Z1-Z2 direction acts. The two upper projections 32 provided on the X1 side and the X2 side of the fourth flat plate portion 30g at the other end of the conductive member 30 are provided on the X1 side and the X2 side of the support portion 23 of the movable portion 20. It enters the groove 24 shown in FIG.

(Function of insulation displacement connector)
Next, the functions of the insulation displacement connector according to this embodiment will be described. FIG. 4 shows a state in which no external force is applied to the press-connecting connector of this embodiment. In this state, the height H of the insulation displacement connector in the Z1-Z2 direction in the embodiment is approximately 6.0 mm, the height H1 of the base body 11 of the base section 10 is approximately 1.2 mm, and the movable section The height H2 of 20 is approximately 1.8 mm. Further, the height H3 of the contact portion 33h of the spring portion 33 and the contact portion 34h of the spring portion 34 of the conductive member 30 projecting from the Z1 side surface of the movable portion 20 toward the Z1 side is about 0.2 mm. In this case, the distance L between the base portion 10 and the movable portion 20, that is, between the surface of the base body portion 11 of the base portion 10 on the Z1 side and the surface of the movable portion 20 on the Z2 side is approximately 2.5 mm. 8 mm.

When the pressure contact connector of this embodiment is used, the Z2 side surface of the base portion 10 is fixed, and the electrode terminal 100 such as a bus bar that contacts the pressure contact connector is located on the Z1 side as shown in FIG. Thus, the contact portion 33 h of the spring portion 33 and the contact portion 34 h of the spring portion 34 of the conductive member 30 are brought into contact with each other.

Thereafter, when a force in the Z2 direction is applied to the electrode terminal 100, as shown in FIG. , the spring portion 33 and the spring portion 34 are deformed. That is, the Z2 side surface of the fourth flat plate portion 30g of the conductive member 30 is in contact with the bottom surface of the support portion 23 of the movable portion 20 and supports the fourth flat plate portion 30g. The spring portion 33 and the spring portion 34 of the conductive member 30 have elasticity and are more easily deformed than the coil spring 40 . The portion 33 and the spring portion 34 are flexurally deformed. Specifically, the contact portion 33h of the spring portion 33 of the conductive member 30 and the contact portion 34h of the spring portion 34 are deformed until they reach the same height as the surface of the movable portion 20 on the Z1 side. The amount of deformation of the spring portions 33 and 34 during this period is about 0.2 mm, which is substantially the same as H3.

Thereafter, as shown in FIG. 16, when a force in the Z2 direction is applied to the electrode terminal 100, the electrode terminal 100 pushes the movable portion 20, causing the coil spring 40 to deform in a contracting direction. moves to the Z2 side, and the base portion 10 and the movable portion 20 come into contact with each other at maximum. The amount of movement of the movable part 20 during this period is substantially the same as the distance L between the base part 10 and the movable part 20, which is about 2.8 mm.

Therefore, the press-connecting connector according to the present embodiment has a stroke length of about 3.0 mm. Since the stroke length is long and the conductive member 30 is thick, the resistance value is 5 mΩ, and a large current of about 15 A can flow. is. That is, the press-connecting connector of the present embodiment separates the conductive function and the elastic function, so that the conductive member 30 provides conductivity corresponding to a large current and the coil spring 40 provides elasticity. In other words, if the conductive member 30 is made thick in order to reduce the resistance, the elasticity of the conductive member 30 is weakened and the function of the press-connecting connector is lost.

(Conductive member 30)
By the way, if the thickness of the conductive member 30 is increased, it becomes difficult to elastically deform. Therefore, it is preferable that the amount of deformation of the conductive member 30 is small. In this embodiment, as shown in FIG. 17, the conductive member 30 is in a state in which the coil spring 40 is not inserted, that is, a state in which no force is applied (this state may be referred to as a natural state). is formed so that the distance L1 between the base portion 10 and the movable portion 20 is approximately 1.4 mm.

Therefore, as shown in FIG. 14 , by attaching the coil spring 40 , the restoring force of the coil spring 40 lifts the movable portion 20 upward with respect to the base portion 10 . Therefore, in the state shown in FIG. 14, the conductive member 30 is deformed by about 1.2 mm in the Z1-Z2 extending direction from the state shown in FIG. 17, and a restoring force acts in the shrinking direction.

16, the conductive member 30 is deformed by about 1.2 mm in the direction of contraction in the Z1-Z2 direction, and is restored in the direction of extension. force is at work.

Therefore, as shown in FIG. 17, the insulation displacement connector according to the present embodiment has a deformation amount of ±1.2 mm in the Z1-Z2 direction of the conductive member 30 when no force is applied to the conductive member 30. is.

For example, if the conductive member 30 is in the state shown in FIG. 14 when no force is applied, when the conductive member 30 is deformed to the state shown in FIG. The amount of deformation of the conductive member 30 in the Z1-Z2 direction, excluding the deformation of the spring portion 34, is about 2.8 mm, and the amount of deformation from the state in which no force is applied is double that in the case shown in FIG. There is a high possibility that the member 30 will exceed its elastic limit and be destroyed.

Therefore, in the present embodiment, by reducing the amount of deformation of the conductive member 30 and making the deformation within the range of elastic deformation, the conductive member 30 is prevented from being destroyed and reliability is improved.

[Second embodiment]
Next, a second embodiment will be described. This embodiment has a structure in which a plurality of conductive members 30 are provided as shown in FIG. Specifically, this embodiment has a base portion 110 and a movable portion 120 on which a plurality of conductive members 30 can be installed, and between the base portion 110 and the movable portion 120 , a plurality of, for example, four conductive members 30 in the case shown in FIG. Coil springs 40 are provided on both sides between the base portion 110 and the movable portion 120, and in the state shown in FIG. ing.

The present embodiment is the same as the first embodiment except that the base portion 110 and the movable portion 120 correspond to the four conductive members 30 .

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

10 base portion 11 base body portion 12 support portion 13 hook portion 14 groove portion 15 support opening portion 16 support groove 20 movable portion 21 through hole 22 locking portion 23 support portion 30 conductive member 31 lower projection portion 32 upper projection portion 33 spring portion 34 Spring portion 40 Coil spring

Claims (8)

a base;
a movable part movable with respect to the base part;
a conductive member installed between the base portion and the movable portion such that one end thereof is on the base portion side and the other end is on the movable portion side;
an elastic member provided between the base portion and the movable portion and having a restoring force in a direction in which the base portion and the movable portion separate;
has
electrically connected by the conductive member ;
The other end of the conductive member is wound
An insulation displacement connector characterized by: The base portion
a base body,
a strut portion extending from the base body portion toward the movable portion;
has
A through hole is provided in the movable part,
2. The press-connecting connector according to claim 1 , wherein the movable portion moves with respect to the base portion in a state in which the support portion of the base portion is inserted into the through hole of the movable portion. The elastic member is a coil spring,
3. The press-connecting connector according to claim 2 , wherein the strut portion is inserted inside the coil spring. a base;
a movable part movable with respect to the base part;
a conductive member installed between the base portion and the movable portion such that one end thereof is on the base portion side and the other end is on the movable portion side;
an elastic member provided between the base portion and the movable portion and having a restoring force in a direction in which the base portion and the movable portion separate;
has
electrically connected by the conductive member;
An insulation displacement connector, wherein the conductive member is formed by bending a sheet of metal plate. The electrically conductive member is stretched in a direction in which the base portion and the movable portion are opened from a natural state by the other end being pushed up by the movable portion due to the restoring force of the elastic member. An insulation displacement connector according to any one of claims 1 to 4 . In a state where no force is applied to the base portion or the movable portion, the conductive member is deformed in an extending direction by the other end being pushed up by the movable portion due to the restoring force of the elastic member. So, there is a restoring force in the direction of contraction,
In the state where the base portion and the movable portion are in contact with each other, the conductive member is deformed in the direction of contraction by being pushed by the other end toward the side of the base portion, thereby generating a restoring force in the direction of extension. An insulation displacement connector according to any one of claims 1 to 4 , characterized in that it works. In the conductive member, deformation from a state in which no force is applied to the base portion or the movable portion to a state in which the base portion and the movable portion are in contact is deformation within the elastic range of the conductive member. The press-connecting connector according to any one of claims 1 to 4 , characterized in that: 8. The insulation displacement connector according to claim 1, wherein a plurality of said conductive members are provided.

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