JP6741200B2 - Contact and connector using it - Google Patents

Description

The present invention relates to a contact used for connecting a board and an electric wire and a connector using the contact.

BACKGROUND ART Conventionally, a so-called card edge connector has been used to connect a board to an electric wire or the like (see, for example, Patent Document 1).

The card edge connector includes a housing having a board insertion portion into which a board end portion is inserted, and a plurality of contacts held in the housing so that the contact portion projects into the board insertion portion. By inserting the end portion, the contact comes into contact with the board connection terminal arranged at the end portion of the board by a predetermined contact pressure, and the board and the electric wire are electrically connected via the contact.

In this type of conventional card edge connector, a contact having a cantilever spring-like elastic contact piece whose tip side extends in the insertion direction is generally used, and when the insertion of the board end is started, the board comes into contact with the contact, Since the board and the contact slide into each other from the state to the predetermined position, the edge surface of the board is scraped by the contact, and the scrap dust adheres between the board connection terminal and the contact, which may cause a conduction failure. There was a risk of becoming.

In addition, when the board is inserted, considering the dimensional tolerance and rattling, the contact part of the contact slides a certain distance in contact with the board connecting terminal. There was a problem.

Therefore, as shown in FIG. 7, the contact 10 used for this type of card edge connector includes an operation contact portion 101 arranged on the back side in the board insertion direction, a front side of the operation contact portion 101, and A main contact portion 102 arranged at a position away from the substrate B or at a position where a substantial contact pressure is not generated, and the edge of the substrate comes into contact with the operation contact portion 101, and the operation contact portion 101 is pushed down to make a book. There has also been developed one in which the contact portion 102 moves to the substrate B side and comes into contact with the substrate connection terminal with a predetermined contact pressure.

When this contact 10 is used, in the initial stage of insertion of the board B, the contact pressure is small even if the end of the board and the contact 10 do not come into contact with each other. The shavings of B and the wear of the board connecting terminals can be suppressed.

Patent No. 5922295

However, in the conventional technique as described above, in consideration of rattling and tolerance at the time of fitting, the contact portion for operation slides a certain distance with respect to the surface of the board end portion, and the contact portion serves as a board connecting terminal. On the other hand, since it is necessary to slide for a certain distance, the surface of the substrate end portion is scraped by both contact portions, and it has been impossible to wipe away the possibility that the scraps cause defective conduction.

Therefore, in view of such conventional problems, the present invention provides a contact and a connector using the same, which can prevent scrapes on the surface of the board and wear of the board connecting terminal at the time of insertion while ensuring a predetermined contact pressure. It was done for the purpose.

A feature of the invention according to claim 1 for solving the above-mentioned conventional problem is that a support plate part that slides relative to each other with an object to be connected, a movable contact body supported by the support plate part, and The movable contact body is provided with a fixed guide portion supported by a support plate portion, and the movable contact body is for pushing contact portion with which the connection target comes into contact, and for deforming in conjunction with pushing of the pushing contact portion. An elastic portion and an elastic contact piece portion supported by the support plate portion via the operation elastic portion are provided, and the fixed guide portion is provided with a direction in which the elastic contact piece portion is separated from the connection target. By providing a contact regulating portion for pressing, the pushing contact portion is pushed into the connection object, the operation elastic portion is deformed and the elastic contact piece portion moves in parallel with the connection object, The elastic contact piece portion is released from the contact restricting portion, and is in a contact that comes into contact with the connection target object at a desired connection position.

According to a second aspect of the invention, in addition to the configuration of the first aspect, the elastic contact piece portion includes a guide convex piece protruding from a side edge of the elastic contact piece portion, and the fixed guide portion is provided on the side of the elastic contact piece. And a guide cutout portion into which the guide protrusion is inserted is formed, and the contact restriction portion is provided on the front side of the connection target object inner side edge of the guide cutout portion in the connection target movement direction. Is being formed.

According to a third aspect of the invention, in addition to the configuration of the first or second aspect, the operation elastic portion includes a bulging spring body that is bulged toward the connection target side and is formed in an arc shape, The top of the bulging spring body protrudes from the connection target side edge of the fixed guide portion, and the top of the bulging spring body forms the pushing contact portion.

According to a fourth aspect of the present invention, there is provided a housing having a board insertion part into which a board is inserted, and a contact arranged along an inner side surface part of the board insertion part and contacting a board connection terminal on the board surface. In a connector provided with, the contact includes a support plate portion fixed to the housing, a movable contact body supported by the support plate portion, and a fixed guide portion supported by the support plate portion, A pushing contact portion with which the connection target comes into contact, an operation elastic portion that deforms in association with the pushing of the pushing contact portion, and elasticity supported by the support plate portion via the operation elastic portion. A contact restricting portion that presses the elastic contact piece in a direction away from the substrate, and the pressing contact portion is pushed into the substrate, When the elastic portion for deformation is deformed and the elastic contact piece portion moves in parallel with the connection target, the elastic contact piece portion is released from the contact restriction portion and comes into contact with the substrate at a desired connection position. There is a connector.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the elastic contact piece portion includes a guide convex piece protruding from a side edge of the elastic contact piece portion, and the fixed guide portion includes the elastic contact piece portion. A guide notch portion is formed laterally and into which the guide protrusion is inserted, and the contact restriction portion is formed on the board-side inner edge of the guide notch portion on the front side in the board insertion direction. To be there.

According to a sixth aspect of the present invention, in addition to the configuration of the fourth or fifth aspect, one end of the operation elastic portion is supported by the support plate portion, and the elastic contact piece portion is supported by the other end thereof. It is formed in a mountain shape or an arc shape that bulges toward the substrate side, and the top portion thereof projects into the substrate insertion portion, and the top portion forms the pushing contact portion.

As described above, the contact according to the present invention and the contact using the same include a support plate part that slides relative to the connection target object, a movable contact body supported by the support plate part, and the support plate part. A fixed guide part supported, wherein the movable contact body has a pushing contact portion with which the connection target comes into contact, and an operation elastic portion that deforms in conjunction with pushing of the pushing contact portion, An elastic contact piece portion supported by the support plate portion via the operation elastic portion, wherein the fixed guide portion presses the elastic contact piece portion in a direction away from the connection target. The elastic contact piece portion by moving the elastic contact piece portion in parallel with the connection target object by deforming the operation elastic portion and pushing the contact portion for pressing into the connection object. Is released from the contact restriction portion and comes into contact with the connection target object at a desired connection position, so that the elastic contact piece moves in parallel during the connection operation of the connection target object, and the connection target accompanying sliding It is possible to prevent the generation of shavings and wear.

Further, in the present invention, the elastic contact piece portion is provided with a guide convex piece protruding from a side edge thereof, the fixed guide portion is arranged laterally of the elastic contact piece, and the guide convex piece is inserted. The guide notch is formed, and the contact restriction portion is formed on the front side of the connection target side inner edge of the guide notch so that the movable contact body slides. In conjunction with, the guide convex piece can be switched between a position where the elastic contact piece is pressed in the direction away from the substrate and a position where the elastic contact piece is opened.

Further, in the present invention, the operation elastic portion includes a bulging spring body formed in a mountain shape or an arc shape that bulges toward the connection target side, and a top portion of the bulging spring body is a connection target of the fixed guide portion. By projecting from the object side edge and forming the pressing contact portion at the top of the bulging spring body, the pressing force of the substrate can be transmitted to the operation elastic portion without sliding with the substrate, The movable contact body can be suitably slid.

It is a perspective view showing an example of a connector using a contact concerning the present invention. FIG. 2 is a plan view showing a contact in FIG. FIG. 3 is a partially enlarged plan view of the contact portion with respect to the substrate, FIG. 4B is a right side view of the same, and FIG. FIG. 7A is a partially enlarged right side view for explaining the initial state of inserting a contact into a substrate, and FIG. (A) is a partial enlarged right side view for explaining the state of the contact in the middle of insertion of the substrate, and (b) is a plan view of the same. (A) is a partial enlarged right side view for explaining a state in which the substrate of the contact is inserted up to a predetermined position, and (b) is a plan view of the same. It is a side view which shows the conventional contact, (a) is a state of the board|substrate initial stage insertion, (b) is a figure which shows the state inserted to the same predetermined position.

Next, an embodiment of a contact according to the present invention and a connector using the contact will be described based on the embodiments shown in FIGS.

This embodiment will be described by taking a card edge connector as an example. In the figure, reference numeral A is a card edge connector (hereinafter referred to as connector), reference numeral B is a board connected to the connector A, and reference numeral C is an electric wire connected to the board B. Is.

The connector A includes a housing 1 having a board insertion portion 11 into which an end portion of the board B is inserted, and a plurality of contacts 2 arranged along the inner side surface of the board insertion portion 11. By inserting the end portion of the board B into the board insertion portion 11, the contacts 2, 2... Contact the board connection terminal on the surface of the board B at a predetermined connection position, and the board is contacted via the contacts 2, 2. B and the electric wire C are electrically connected.

As shown in FIG. 1, the housing 1 is made of an insulating resin in a rectangular parallelepiped shape, and a slit hole-shaped substrate insertion portion 11 is opened on the front side thereof.

Further, contact insertion holes are formed in the housing 1 along the inner side surface of the board insertion portion 11, and the contacts 2, 2... Are inserted into the contact insertion holes from the rear surface side of the housing 1. There is.

As shown in FIGS. 2 and 3, the contacts 2, 2... Are integrally formed by punching and bending a conductive metal plate material, and relatively move in a sliding direction with respect to a board B which is an object to be connected. The support plate portion 3 is provided, the movable contact body 4 supported by the support plate portion 3, and the fixed guide portions 5, 5 supported by the support plate portion 3 immovably.

The support plate portion 3 is formed in a plate shape arranged in parallel with the substrate B which is the connection target, and the connection terminal portion 6 to which the electric wire C is crimped is integrally formed at one end thereof. The form of the connection terminal portion 6 is not limited to this embodiment, and the form is appropriately changed according to the form of the other party to be connected.

Further, a movable base end portion 31 that supports the base end of the movable contact body 4 is integrally formed on the support plate portion 3 on the rear side in the board B insertion direction, and the pair of fixed guide portions 5 is disposed on the front side in the board B insertion direction. , 5 are integrally supported in an arrangement in which they are raised from both side edges.

The movable base end portion 31 is formed in a plate shape rising from the rear end side edge of the support plate portion 3, and the base end of the movable contact body 4 is integrally supported by the upper edge thereof.

The movable contact member 4 includes a pushing contact portion 71 with which the substrate B, which is a connection target, contacts, an operation elastic portion 7 that deforms in association with the pushing of the pushing contact portion 71, and an operation elastic portion 7. The elastic contact piece portion 8 supported by the support plate portion 3 via the elastic contact piece portion 8 is elastically deformed in association with the board B which is the target connection object, and the elastic contact piece portion 8 slides. It is supposed to do.

The operation elastic portion 7 includes a support base end portion 72 supported by an upper edge of the movable base end portion 31 and an elastic support portion 73 extending obliquely downward from a front side end of the support base end portion 72 in the board B insertion direction. And a mountain-shaped bulging spring body 74 bulging toward the substrate B, one end of which is supported at the lower end of the elastic support portion 73, and the other end of the bulging spring body 74 is provided with a base end of the elastic contact piece portion 8. Is supported.

One end of the elastic support portion 73 is supported by the movable base end portion 31, has a cantilever spring shape extending obliquely downward, and is bent in the board B insertion direction in cooperation with the bulging spring body 74. ..

The bulging spring body 74 is bent and supported from the lower end of the elastic support portion 73 through the oblique piece portion 741 that extends toward the side of the substrate B that is the connection target, and the upper end of the oblique piece portion 741 through the arcuate top portion. And a receiving piece portion 742 arranged so as to form a substantially right angle with the plate portion 3, and the oblique piece portion 741, the top portion and the receiving piece portion 742 form a mountain shape that bulges toward the substrate B side. It can be bent in the insertion direction.

Further, the bulging spring body 74 is formed so that the top portion thereof protrudes outside the edges of the fixed guide portions 5 and 5 on the substrate B side and into the substrate insertion portion 11, and the top portion forms the pushing contact portion 71. Has formed.

The elastic contact piece portion 8 includes an elastic portion for operation 7, that is, an elongated plate-shaped base end side elastic piece portion 81 that extends obliquely from one end of the bulging spring body 74, and a base end side elastic piece portion 81. A cantilever spring shape that is continuous and has a tip-side elastic piece portion 83 integrally formed with an arc-shaped contact point portion 82 at the tip end, is lifted on the contact point portion 82 side, and can be bent in a direction away from the substrate B. Is done.

The elastic contact piece portion 8 is integrally provided with guide convex pieces 84, 84 protruding outward from the side edge thereof, that is, the side edge of the base end side elastic piece portion 81.

Each of the fixed guide portions 5 and 5 is formed in a rectangular plate shape rising from the side edge of the support plate portion 3 and faces each other with the elastic contact piece portion 8 interposed therebetween.

The fixed guide portions 5 and 5 are provided with a contact regulation portion 91 that presses the elastic contact piece portion 8 in a direction of separating from the connection target when the board B is not inserted.

In addition, the fixed guide portions 5 and 5 are formed with guide notches 9 into which the guide protrusions 84 and 84 are inserted, and the guide protrusions 84 and 84 are guided along the guide notches 9. It has become so.

The guide notch 9 has a contact restriction portion 91 formed on the inner side of the board B on the front side in the board B insertion direction, and a release concave portion that is recessed toward the board B in a continuous manner with the contact restriction portion 91 on the back side thereof. 92 is formed, and the inner edge of the substrate B side has a step shape.

The relative positions of the guide protrusions 84, 84 with respect to the guide notch 9 are between the contact restricting portion 91 and the releasing recess 92 as the movable contact body 4 (elastic contact piece portion 8) slides. It is designed to switch.

The contact restricting portion 91 is formed at a position separated from the edge of the fixed guide portion 5 on the side of the substrate B by a predetermined distance L1, and presses the guide convex pieces 84, 84 in the direction away from the substrate B by the distance L1. The elastic contact piece portion 8 is bent to a position where the portion 82 is inside the edges of the fixed guide portions 5 and 5 on the substrate B side, that is, to a position where the elastic contact piece portion 8 does not contact the substrate B.

The release concave portion 92 includes a guide inclined portion 93 at an inner edge on the contact regulating portion 91 side, and the guide convex piece 84 is guided by the guide inclined portion 93 and relatively moves between the contact regulating portion 91 and the release concave portion 92. It is supposed to do.

Further, in the release concave portion 92, the distance L2 between the inner edge of the substrate B side and the edge of the fixed guide portions 5, 5 on the substrate B side is short, and the guide protrusions 84, 84 move to the release concave portion 92 side. The elastic contact piece portion 8 is elastically restored by being released from the contact regulating portion 91, and the contact portion 82 projects outward from the edge of the fixed guide portions 5 and 5 on the side of the substrate B.

In the connector A using the contacts 2, 2,..., When the board B is not inserted, the movable contact body 4 is at the initial position, the guide protrusions 84, 84 are pressed by the contact regulating portion 91, and the elasticity is reduced. The contact piece portion 8 is bent in a direction away from the substrate B, that is, in a preloaded state.

In this preloaded state, the contact portion 82 of the elastic contact piece portion 8 is located inside the edges of the fixed guide portions 5 and 5 on the side of the substrate B, and is lower than the inner bottom surface of the substrate insertion portion 11.

On the other hand, when the board B is inserted into the board insertion portion 11, at the initial stage of insertion, as shown in FIG. 4, the board B is still in the preload state until it comes into contact with the pushing contact portion 71. 8 does not contact the surface of the substrate B, and the substrate B and the contacts 2, 2... Do not slide.

Then, when the board B is further inserted, as shown in FIG. 5, the pushing contact portion 71 is pushed into the board B, and in conjunction with this, the operation elastic portion 7, that is, the bulging spring body 74 and the elastic support. The part 73 bends in the sliding direction, and the movable contact body 4 starts moving in parallel with the substrate B toward the rear side in the insertion direction.

Then, when the substrate B is inserted to a predetermined position, the movable contact body 4 moves further inward in parallel with it, and the positions of the guide protrusions 84, 84 are guided by the guide inclined portion 93 to cause the release recess 92 to move. The elastic contact piece portion 8 is released from the contact regulating portion 91 by relatively moving to the position.

The elastic contact piece portion 8 released from the contact regulating portion 91 elastically returns from the bent state, the contact portion 82 at the tip moves to the substrate B side, and becomes a substrate connection terminal on the surface of the substrate B with a predetermined contact pressure. Contact.

In the connector A using the contacts 2, 2,..., When the board B is pulled out from the board insertion portion 11, the force acting on the pushing contact portion 71 is removed and the operation elastic portion 7 bends. The elastic contact portion 7 is elastically returned from this state, and the movable contact body 4 is returned to the initial position by being urged by the operation elastic portion 7.

At that time, the guide protrusions 84, 84 are guided by the guide inclined portion 93 and relatively move to the position of the contact regulating portion 91, the guide protrusions 84, 84 are pressed by the contact regulating portion 91, and the elastic contact piece portion 8 moves. It bends in the direction away from the substrate B and returns to the initial state.

In the contacts 2, 2... And the connector A using the contacts 2 configured as above, the elastic contact piece portion 8 moves in parallel with the board B when the board B is inserted and removed, and the board B is at a predetermined position. Since the elastic contact piece portion 8 is bent by the contact restricting portion 91 in the direction away from the substrate B until it is inserted into, the contacts 2, 2... Do not slide on the substrate B, It is possible to prevent generation of shavings due to sliding and abrasion of the surface of the substrate B.

In addition, in the contacts 2, 2... And the connector A using the contacts, the push-in contact portion 71 contacts the board B when the board B is inserted and removed, but the board B and the push-in contact portion 71 slide against each other. Since it does not move, there is no generation of shavings due to sliding and no abrasion of the surface of the substrate B.

In addition, in the above-described embodiment, the operation elastic portion 7 having the bulging spring body 74 is described as an example, but the mode of the operation elastic portion 7 is not limited to the above-described embodiment, and may be, for example, a plan view mountain. The shape may be an arc shape in plan view or a bellows shape in plan view. In that case, the pressing contact portion 71 is formed integrally with the operation elastic portion 7.

Furthermore, in the above-described embodiment, the example in which the contact restriction portion 91 is formed on the inner edge of the guide notch 9 formed in the fixed guide portions 5 and 5 on the substrate B side has been described. The present invention is not limited to this, and for example, it may be formed by bending or cutting and raising a part of the fixed guide portions 5, 5.

Further, in the above-described embodiment, an example in which the operating elastic portion 7 is arranged on the rear side of the elastic contact piece portion 8 in the object insertion direction has been described, but the operating elastic portion 7 is located in front of the elastic contact piece portion 8. They may be arranged side by side or parallel to each other. For example, a movable guide portion that faces the fixed guide portion 5 and is movable in the insertion/removal direction of the connection target is provided, and an elastic contact piece is provided at the rear end portion of the movable guide portion. The structure may be such that the supporting plate part 3 is supported, and the front edge part thereof is supported by the supporting plate part 3 via an operation elastic part formed in a mountain shape in plan view.

Although the card edge connector A has been described as an example in the above-described embodiment, the contacts 2, 2... According to the present invention are also applied to the connector A or the like in which other than the substrate B is a target connection object. be able to.

A connector B substrate C electric wire 1 housing 11 substrate insertion portion 12 contact insertion hole 2 contact 3 support plate portion 31 movable base end portion 4 movable contact body 5 fixed guide portion 6 connection terminal portion 7 elastic portion 71 for operation contact portion for pushing 72 Support Base End 73 Elastic Support Part 74 Swelling Spring Body 8 Elastic Contact Piece 81 Base End Side Elastic Piece 82 Contact Point 83 Tip Side Elastic Piece 84 Guide Convex Piece 9 Guide Notch 91 Contact Restrictor 92 Releasing recess 93 Guide slope

Claims (6)

A support plate part that slides relative to the connection target object, a movable contact body supported by the support plate part, and a fixed guide part supported by the support plate part,
The movable contact body includes a pushing contact portion with which the connection target comes into contact, an operating elastic portion that is deformed in association with pushing of the pushing contact portion, and the support via the operating elastic portion. An elastic contact piece portion supported by the plate portion is provided,
The fixed guide portion includes a contact restriction portion that presses the elastic contact piece portion in a direction of separating from the connection target,
The pushing contact portion is pushed into the connection object, the operation elastic portion is deformed, and the elastic contact piece portion moves in parallel with the connection object, so that the elastic contact piece portion is in contact regulation. A contact which is released from the portion and contacts the connection object at a desired connection position. The elastic contact piece portion is provided with a guide convex piece protruding from its side edge,
The fixed guide portion is disposed on the side of the elastic contact piece, and a guide cutout portion into which the guide projection piece is inserted is formed. The contact according to claim 1, wherein the contact restriction portion is formed on the front side in the object moving direction. The operation elastic portion includes a bulging spring body formed in a mountain shape or an arc shape that bulges toward the connection target side, and the top portion of the bulging spring body projects from the connection target side edge of the fixed guide portion, The contact according to claim 1 or 2, wherein a top portion of the bulging spring body forms the pushing contact portion. In a connector comprising a housing having a board insertion part into which a board is inserted, and a contact arranged along an inner side surface part of the board insertion part and in contact with a board connection terminal on the board surface,
The contact includes a support plate portion fixed to the housing, a movable contact body supported by the support plate portion, and a fixed guide portion supported by the support plate portion,
The pushing contact portion with which the connection target comes into contact, the operation elastic portion that deforms in association with the pushing of the pushing contact portion, and the operation elastic portion are supported by the support plate portion. With an elastic contact piece,
The fixed guide portion includes a contact restriction portion that presses the elastic contact piece portion in a direction of separating from the substrate,
The pushing contact portion is pushed into the substrate, the operation elastic portion is deformed, and the elastic contact piece portion moves in parallel with the object to be connected, so that the elastic contact piece portion moves from the contact regulating portion. A connector which is released so as to come into contact with the substrate at a desired connection position. The elastic contact piece portion is provided with a guide convex piece protruding from its side edge,
The fixed guide portion is arranged laterally of the elastic contact piece portion, and a guide notch portion into which the guide protrusion piece is inserted is formed. The connector according to claim 4, wherein the contact restriction portion is formed on the front side in the direction. One end of the elastic operation portion is supported by the support plate portion, and the other end of the elastic contact piece portion is formed in a bulge or arc shape that bulges toward the substrate side, and the top portion of the substrate is the substrate. The connector according to claim 4, wherein the connector projects into the insertion portion, and the top portion forms the pushing contact portion.

Images