KR20200008814A - Receptacle connector and plug connector - Google Patents

Abstract

The present application relates to a receptacle connector and a plug connector capable of maintaining the contact reliability. According to one embodiment of the present invention, the receptacle connector comprises: a bar-shaped body unit; a plug insulator including an insertion unit protruding from the body unit; a plurality of plug contact pins arranged in a constant pitch in the plug insulator; and a plug hold-down unit including a restriction unit protruding by a set length than a thickness of the body unit and coupled to cover at least part of the outer surface of the body unit.

Description

Receptacle connector and plug connector

The present application relates to receptacle connectors and plug connectors, and more particularly to receptacle connectors and plug connectors that can be used as a floating board to board (B2B) connector.

Board connectors are used to connect printed circuit boards (PCBs) or wired electronic components. Specifically, board-to-board connectors include plug connectors and receptacle connectors. Each of the receptacle connectors may be connected to different substrates, and the plug connector and the receptacle connector may be coupled to each other, thereby enabling signal transmission through different substrates.

However, since the plug connector and the receptacle connector are firmly fixed to the board, there is a risk that the coupling between the plug connector and the receptacle connector may be damaged by vibration in an environment that is impacted from an external shock or exists in a vibration such as a vehicle.

The present application seeks to provide a receptacle connector and a plug connector that can be used as a floating B2B connector.

The present application is to provide a receptacle connector and plug connector that can maintain contact reliability even if broken out of the movable range in the floating B2B connector.

The present application is to provide a receptacle connector and plug connector that can further secure the moving range of the floating B2B connector through a simple structure.

The plug connector according to the embodiment of the present invention relates to a floating board to board connector, and includes a bar-shaped body portion and a plug insulator including an insertion portion protruding from the body portion. insulator); A plurality of plug contact pins arranged in a constant pitch in the plug insulator; And a restraining part protruding by a set length than the thickness of the body part, and a plug hold-down part coupled to cover at least a portion of an outer surface of the body part.

Here, the plug hold-down part may be coupled to surround both ends in the longitudinal direction of the outer surface of the body part.

Herein, the restraining part may be positioned at both ends and protrude as the set length in the coupling direction of the plug connector.

Herein, the restraining part may be coupled to surround both ends of the “C” shape.

Here, when the plug connector is inserted into the receptacle connector, the hold down part may cover the outer surface of the receptacle insulator of the receptacle connector spaced apart by a limit interval.

Receptacle connector according to an embodiment of the present invention relates to a floating B2B connector (Floating Board to Board Connector), a receptacle insulator including a fixed insulator including a coupling groove therein, and a movable insulator inserted into the coupling groove. (receptacle insulator); And a plurality of receptacle contact pins connecting between the stationary insulator and the movable insulator and providing elasticity for displacement of the movable insulator.

The fixed insulator may include a support part disposed on an inner surface of the coupling groove and forming a contact surface with the receptacle contact pin; And an inclined surface formed in an outer surface direction of the fixed insulator from a contact point set in the support.

Here, the receptacle contact pin may include a fixing part forming a contact with a substrate and forming a contact surface with the support part; A movable part falling from the support part from the contact point and compressed or stretched according to an external force applied; And a contact portion drawn into the movable insulator and forming a contact with a plug connector inserted into the movable insulator.

Here, the movable part may move in the inclined plane direction when compressed by the external force.

Here, the receptacle contact pin may further include a wedge portion coupled to the fixing insulator to fix the receptacle content pin.

The fixed insulator may further include a pinhole connecting the contact point on the upper surface of the fixed insulator, and the pinhole may be formed so as to widen the width of the pinhole from a set height.

In addition, the solution of the said subject does not enumerate all the characteristics of this invention. Various features of the present invention and the advantages and effects thereof may be understood in more detail with reference to the following specific embodiments.

According to the receptacle connector and the plug connector according to an embodiment of the present invention, by operating as a floating B2B connector, it is possible to stably connect different substrates by absorbing the tolerances generated during design. In addition, since it is flexibly displaced by the movable insulator, it is possible to absorb external shocks or the like applied to the substrate.

According to the receptacle connector and the plug connector according to an embodiment of the present invention, even when the movable insulator breaks out of the movable range, electrical contact between the receptacle connector and the plug connector can be maintained. That is, it is possible to maintain contact reliability despite breakage.

According to the receptacle connector and the plug connector according to an embodiment of the present invention, despite the trend of miniaturization of the connector structure, including a simple structure, the movable range of the movable insulator can be further secured.

1 is a perspective view showing a receptacle connector and a plug connector according to an embodiment of the present invention.
2 is a perspective view and a cross-sectional view showing a shape in which a receptacle connector and a plug connector are coupled according to an embodiment of the present invention.
3 and 4 are schematic views showing the operation of the plug connector according to the embodiment of the present invention.
5 and 6 are schematic views showing the operation of the receptacle connector according to the embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected', but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' a certain component means that the component may further include other components, not to exclude other components unless specifically stated otherwise.

1 is a perspective view showing a receptacle connector and a plug connector according to an embodiment of the present invention.

Referring to Figure 1 (a), the plug connector 100 according to an embodiment of the present invention may include a plug insulator 110, a plug contact pin 120 and a plug hold-down unit 130.

The plug insulator 110 may be made of an insulating material that does not conduct electricity, and the plug contact pin 120 and the plug holddown unit 130 may be coupled to the plug insulator 110. The plug insulator 110 may be manufactured by insert molding with the plug contact pin 120. Depending on the embodiment, it is also possible for the plug insulator 110 to be manufactured by molding and then to assemble the plug contact pins 120 into the insulating body 110.

As shown in FIG. 1A, the plug insulator 110 may include a bar portion body 111 and an insertion portion 112 protruding from the body portion 111. Referring to FIG. 2, the insertion part 112 is inserted into the insertion groove o2 of the receptacle connector 200, and the body part 111 may be supported by the receptacle insulator 210 of the receptacle connector 200. have. That is, the depth of the insertion portion 112 is inserted into the insertion groove (o2) of the receptacle insulator 210 by the body portion 111 can be limited. Here, the insertion part 112 may be located at the center of the body part 111 and may have a shape corresponding to the inside of the insertion groove o2 of the receptacle insulator 210.

The plug contact pin 120 may be made of a conductive material, and may be arranged at a constant pitch in the plug insulator 110. The plug contact pin 120 may contact the receptacle contact pin 220 and the plug substrate of the receptacle connector 200 to form a contact. Here, some areas of the plug contact pins 120 are exposed at the body portion 111 for contact with the plug substrate, and other areas are exposed at the insert 112 for contact with the receptacle contact pins 220. Can be.

The plug holddown part 130 may be coupled to cover at least a part of the outer surface of the body part 111, and the plug holddown part 130 may have a set length d1 than the thickness of the body part 111. Constraints that protrude by) may be further included.

The plug hold-down part 130 may be formed to cover the entire outer surface of the body part 111 or to cover only a part of the area, but according to an embodiment, as shown in FIG. It may be coupled to surround both ends in the longitudinal direction of the outer surface of the). That is, the plug hold-down unit 130 may be implemented in a "c" shape surrounding each end. Since the plug insulator 110 is formed of an insulating material such as plastic, the plug insulator 110 may be relatively weak in strength. Therefore, the plug hold-down unit 130 may be coupled to the plug insulator 110 to reinforce the strength of the plug connector 100.

Herein, the restraining portion is a region protruding by the set length d1 in the engagement direction of the plug connector 100 from the plug holding down portion 130, and may be formed in the entire region of the plug holding down portion 130 according to an embodiment. Can be. Referring to Figure 1 (a), it can be seen that the restraint portion is generated in the whole of the plug hold-down portion 130 implemented in the "c" shape, and is derived by the set length (d1) in the coupling direction. Here, the setting length d1 may be variously set according to the embodiment. The restraint part may be formed only at a part of the plug holddown part 130 and the like. Hereinafter, as illustrated in FIG. 1A, the restraint part is formed in the entire region of the plug holddown part 130. It demonstrates by an example.

Referring to FIG. 1B, a receptacle connector 200 according to an exemplary embodiment of the present invention may include a receptacle insulator 210, a receptacle contact pin 220, and a receptacle hold-down unit 230.

The receptacle insulator 210 may be formed of an insulating material that is not electrically conductive, and the receptacle contact pin 220 and the receptacle hold-down unit 230 may be coupled to the receptacle insulator 210.

As shown in FIG. 1B, the receptacle insulator 210 may include a fixed insulator 211 and a movable insulator 212, and may be formed by combining the fixed insulator 211 and the movable insulator 212. Can be.

The fixed insulator 211 may be implemented in a bar shape extending in the length direction and may include a coupling groove o1 therein. The coupling groove o1 may be formed in the coupling direction of the plug connector 100, and the movable insulator 212 may be inserted into the coupling groove o1. The stationary insulator 211 may be coupled to the receptacle substrate to be fixed.

The movable insulator 212 may be inserted into the coupling groove o1 of the fixed insulator 211, and may be displaced in the longitudinal direction or the width direction in the coupling groove o1. That is, when the movable insulator 212 is inserted into the coupling groove o1, there may be a displacement space corresponding to a tolerance set between the movable insulator 212 and the coupling groove o1, and within the displacement space. The movable insulator 212 can be displaced. The displacement space may be formed in both the longitudinal direction and the width direction in the coupling groove o1. That is, the movable range in which the movable insulator 212 can be displaced may be determined by the displacement space. In addition, the movable insulator 212 may include an insertion groove o2, and the plug connector 100 may be inserted into the insertion groove o2.

The receptacle contact pin 220 may connect between the stationary insulator 211 and the movable insulator 212, and may provide elasticity for displacement of the movable insulator 212. That is, the movable insulator 212 may be floated in the fixed insulator 211 by the receptacle contact pin 220. In this case, when an external force is applied to the movable insulator, the movable insulator 212 may be displaced in the coupling groove o1 by the elasticity of the receptacle contact pin 220.

The receptacle contact pin 220 may be made of a conductive material, and may be arranged at a constant pitch in the receptacle insulator 210. The receptacle contact pin 220 may contact the plug contact pin 120 and the receptacle substrate, respectively, to form a contact point. Here, a portion of the receptacle contact pin 220 is exposed in the fixed insulator 211 for contact with the receptacle substrate, and another area is an insertion groove of the movable insulator 212 for contact with the plug contact pin 120. may be exposed within (o2).

The receptacle holddown unit 230 may be coupled to cover at least a portion of the fixed insulator 211. Since the receptacle insulator 210 is formed of an insulating material such as plastic, the strength may be relatively low. Therefore, the receptacle holddown unit 230 may be coupled to reinforce the strength of the receptacle connector 200. In FIG. 1B, a receptacle holddown part 230 having a shape surrounding both ends of the fixed insulator 211 is illustrated, but is not limited thereto, and various types of receptacle holddown part 230 may exist.

2 is a perspective view and a cross-sectional view showing a coupling shape of a receptacle connector and a plug connector according to an embodiment of the present invention. Here, Fig. 2 (a) is a perspective view showing a coupling shape, Fig. 2 (b) corresponds to a cross section taken along the line X-X 'of the perspective view, and Fig. 2 (c) corresponds to a cross section taken on the line Y-Y'.

As shown in FIG. 2A, the plug connector 100 may be inserted into the receptacle connector 200, and the plug contact pin 120 and the receptacle contact pin 220 may form an electrical contact. . Here, the plug connector 100 and the receptacle connector 200 may be connected to the plug substrate and the receptacle substrate, respectively, to perform a function of connecting the substrates to each other.

2 (b) and 2 (c), the displacement space t may be included in the coupling groove o1, and the movable insulator 212 may be coupled to the coupling groove o1 by the receptacle contact pin 220. Can be floated within. In this case, the movable insulator 212 may move in the longitudinal direction or the width direction in the coupling groove o1 by the displacement space t. That is, the movable insulator 212 may be flexibly displaced according to the external force applied, and thus the contact between the plug connector 100 and the receptacle connector 200 may be continuously maintained.

As such, the plug connector 100 and the receptacle connector 200 according to an embodiment of the present invention may operate as a floating board to board connector that connects different boards while displacing in response to an external force. have. That is, it is possible to absorb the tolerances generated during the design so that the substrates can be stably connected despite the tolerances, and to absorb external shocks or the like applied to the substrates by the displacement of the movable insulator 212. According to an embodiment, the floating B2B connector may be utilized in an environment in which vibrations exist, such as a vehicle.

On the other hand, the plug connector 100 according to an embodiment of the present invention, by using the plug hold-down section 130 including the restraint, to improve the contact reliability between the plug connector 100 and the receptacle connector 200. Can be. That is, as shown in FIGS. 2 (b) and 2 (c), when the plug connector 100 is inserted, the plug hold-down part 130 may limit a portion of the movable insulator 212 by the protruding drive part. You can cover as far apart. In this case, even if the movable insulator 212 breaks outside the movable range, it is possible to stably maintain the contact point.

Specifically, referring to FIG. 3, as shown in FIG. 3A, the plug connector 100 may be inserted into the receptacle connector 200. Here, the plug connector 100 may be connected to the plug board b1, and the receptacle connector 200 may be connected to the receptacle board b2.

Then, as shown in Figure 3 (b), it can be fixed between the plug substrate and the receptacle substrate with a fastening structure such as bolt-nut, it is possible to strengthen the coupling between the substrate through the fastening structure. However, when an error exists in the position of the fastening structure, as shown in FIG. 3 (c), an external force may be applied between the plug connector 100 and the receptacle connector 200 when the fastening structure is fastened. Here, when the error is formed in the longitudinal direction, as shown in Fig. 3C, an external force may occur in the longitudinal direction.

Thereafter, a case may be out of the longitudinal movable range of the movable insulator 212 by an external force, and as shown in FIG. 3D, one side of the movable insulator 212 in the longitudinal direction may be damaged. When one side of the movable insulator 212 is broken, the plug connector 100 may move in the broken direction due to an external force, and in this case, the contact between the plug contact pin 120 and the receptacle contact pin 220 drops. May cause problems. However, since the restraining portion of the plug hold-down portion 130 protrudes by the set length d1 to support the opposite side of the broken side of the movable insulator 212, it is possible to limit the movement of the plug insulator 110. . Therefore, the plug connector 100 may not move in the broken direction, and it is possible to maintain the contact with the receptacle contact pin 120 within the movable range by the restriction. In this case, since the restraining part is positioned to be spaced apart from the outer surface of the receptacle insulator 210 by a limit interval, the other side of the movable insulator 212 may be supported only when one side of the movable insulator 212 is broken.

In addition, even when an external force is generated in the width direction as shown in Fig. 4, the contact between the plug connector 100 and the receptacle connector 200 can be maintained in the same manner. That is, as shown in Fig. 4A, when an error in the fastening structure is formed in the width direction, external force in the width direction may occur. In this case, as shown in Fig. 4B, the movable insulator 212 can move in the width direction, and as shown in Fig. 4C, the movable insulator 212 is outside the movable range of the movable insulator 212 in the width direction. In this case, the widthwise side surface of the movable insulator 212 may be broken. Even in this case, since the restraining part of the plug hold-down part 130 supports the opposite side of the broken side of the movable insulator 212, the movement of the plug insulator 110 can be restricted. Therefore, the plug connector 100 may not move in the broken direction and may maintain the contact with the receptacle contact pin 120 within the movable range by the restraining portion. In this case, the restraining part may be positioned to be spaced apart from the outer surface of the receptacle insulator 210 by a limit interval, and the movable insulator 212 may be confirmed to be supported by contacting with the opposite side.

On the other hand, referring to Figure 2 (c), it can be seen that the receptacle connector 200 according to an embodiment of the present invention includes a support portion 2111 and the inclined surface 2112 formed in the fixed insulator 211. In order to displace the movable insulator 212, it is necessary to secure a displacement space, but there is a problem that it is difficult to secure a sufficient displacement space in the receptacle connector 200 according to the miniaturization trend of the connector element. Here, by using the inclined surface 2112 formed in the support portion 2111, it is possible to additionally secure the displacement space in the width direction in the miniaturized receptacle connector 200.

Specifically, as shown in Figure 5 (a), the support portion 2111 may be located on the inner surface in the coupling groove (o1), the support portion 2111 may form a contact surface with the receptacle contact pin 220. have. Here, the support part 2111 may include an inclined surface 2112, and the inclined surface 2112 may be formed in the direction of the outer surface of the fixed insulator from the set contact point p. That is, a free space through which the receptacle contact pin 220 can move may be further formed by the inclined surface 2112. Therefore, as shown in FIG. 5B, when an external force in the width direction occurs, the receptacle contact pin 220 may move into the free space, and thus the movable range of the movable insulator 212 may increase. have.

In addition, the magnitude of the force necessary for the displacement of the movable insulator 212 can be adjusted according to the position of the contact point p. Referring to FIG. 5, since the receptacle contact pin 220 includes a spring shape including a bend, the magnitude of the force required to store the same magnitude of elastic energy is different depending on the position of the contact point p. can do. Here, as the contact point p is located below, the movable insulator 212 can be displaced with less force, and as the contact point p is located above, a larger force may be required for the displacement of the movable insulator 212. . Thus, by designing the depth d2 of the contact point p, it is possible to adjust the magnitude of the force necessary for the displacement of the movable insulator 212.

On the other hand, as shown in Figure 6, in order to secure the longitudinal displacement space of the movable insulator 212, it is also possible to further include a structure of the pinhole (h). The pinhole h may be a through hole connecting the contact point p at the upper surface of the fixed insulator 211. As shown in FIG. 6 (b), the pinhole h has a set depth according to the AA 'cross section. From (d3) it may be formed to widen the pinhole. Here, since the width of the pinhole becomes wider from the set depth d3, when the receptacle contact pin 220 is bent in the longitudinal direction, it is possible to additionally secure the displacement space in the longitudinal direction. In addition, it is also possible to adjust the magnitude of the force required for the displacement of the receptacle content pin 220 in the longitudinal direction according to the setting depth d3.

Additionally, the receptacle contact pin 220 may include a fixing portion 221, a movable portion 222, a contact portion 223, and a wedge portion 224.

The fixing part 221 is an area fixed by the fixing insulator 211, and may form a contact point with the receptacle substrate b2. As shown in Fig. 5A, a contact surface can be formed with the supporting portion 2111 of the fixed insulator 211. Figs.

The movable part 222 may be spaced apart from the contact point p to the support part 2111, and may correspond to an area corresponding to the point connected to the movable insulator 212 from the contact point p. The movable portion 222 may be compressed or extended according to the direction of the external force applied, and the movable insulator 212 may be displaced according to the compression or extension of the movable portion 222. Here, when compressed by an external force, the movable portion 222 can move to a free area secured by the inclined surface, thereby increasing the movable range of the movable insulator 212. Since the movable part 222 includes a bent part, an external force applied from the part may be stored as an elastic force in the bent part.

The contact portion 223 corresponds to a region drawn into the movable insulator 212, and may form a contact with the plug connector 100 inserted into the movable insulator 212. An external force may be applied to the movable insulator 212 by the contact portion 223, and thus the movable insulator 212 may move.

The wedge 224 may have a shape as shown in FIG. 6, and the receptacle contact pin 220 may be coupled into the fixed insulator 211 by the wedge 224.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be substituted, modified, and changed in accordance with the present invention without departing from the spirit of the present invention.

100: plug connector 110: plug insulator
111: body portion 112: insertion portion
120: plug contact pin 130: plug hold down section
200: Receptacle Connector 210: Receptacle Insulator
211: fixed insulator 212: movable insulator
220: Receptacle contact pin 230: Receptacle hold down part

Claims (11)

In floating board to board connector,
A plug insulator including a bar-shaped body portion and an insertion portion protruding from the body portion;
A plurality of plug contact pins arranged in a constant pitch in the plug insulator; And
And a plug hold-down part coupled to cover at least a portion of an outer surface of the body part, the plug connector including a restraining part protruding by a set length than the thickness of the body part.
The method of claim 1, wherein the plug hold down portion
Plug connector, characterized in that coupled to surround both ends of the longitudinal direction of the outer surface of the body portion.
The method of claim 2, wherein the restraint portion
The plug connector, characterized in that located in the both ends, protrudes in the engagement direction of the plug connector by the set length.
The method of claim 3, wherein the restraint portion
Plug connector, characterized in that coupled to surround both ends in the "C" shape.
The method of claim 1, wherein the hold down portion
And when the plug connector is inserted into the receptacle connector, the restricting part covers an outer surface of the receptacle insulator of the receptacle connector spaced apart by a predetermined distance from the plug connector.
In floating board to board connector,
A receptacle insulator including a fixed insulator including a coupling groove therein and a movable insulator inserted into the coupling groove; And
A receptacle connector connecting between the stationary insulator and the movable insulator and comprising a plurality of receptacle contact pins providing elasticity for displacement of the movable insulator.
The method of claim 6, wherein the stationary insulator
A support part positioned on an inner surface of the coupling groove and forming a contact surface with the receptacle contact pin; And
And an inclined surface formed in a direction toward an outer surface of the fixed insulator from a contact point set in the support portion.
The method of claim 7, wherein the receptacle contact pin is
A fixing part forming a contact with the substrate and forming a contact surface with the support part;
A movable part falling from the contact point from the contact point and compressed or extended according to an external force applied; And
And a contact portion drawn into the movable insulator and forming a contact with a plug connector inserted into the movable insulator.
The method of claim 8, wherein the movable portion
When compressed by the external force, the receptacle connector characterized in that it moves in the inclined surface direction.
The method of claim 8, wherein the receptacle contact pin
And a wedge portion coupled to the fixing insulator to fix the receptacle content pin.
The method of claim 7, wherein the stationary insulator
Further comprising a pinhole connecting the contact point on the upper surface of the fixed insulator,
The pinhole is a receptacle connector, characterized in that the width of the pinhole is formed from a set height.

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