JP2018049722A - Shield connector and electric connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield connector that is able to effectively hinder occurrence of radiation noise through the ground.SOLUTION: In a shield connector 1, each connector-side signal terminal 30 has a signal terminal plate-like spring part 31 bent in an L shape, and a leading-end part bent inside the signal terminal plate-like spring 31 serves as a contact. Each connector-side ground terminal 40 has a ground terminal plate-like spring part 41 bent in an L shape in the same direction as the signal terminal plate-like spring part 31, one-end side of the ground terminal plate-like spring part 41 is connected with a shield part 20, and the leading-end part bent inside the other-end side serves as a contact. The shield connector has a shield covering part 50 that bridges end parts connected to the shield parts 20 of the ground terminal plate-like spring parts 41 of the pair of connector-side ground terminals 40 while covering the signal terminal plate-like spring parts 31 of the two connector-side signal terminals 30.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a shield connector and an electrical connection structure connected to terminals provided on a circuit board.

Conventionally, in order to transmit a high-frequency electrical signal to a control unit of various electrical components mounted on an automobile or the like, a shielded wire corresponding to a high frequency has been used, and a shield shell or the like that performs a shield function for electrical connection of this shielded wire A shielded connector having a shield part is used.
For example, Patent Document 1 describes a shield connector in which a plurality of contacts (terminals) are connected to a plurality of substrate contacts covered with a shield shell.

  Patent Document 2 discloses that a plurality of circuit board side signal terminals arranged in parallel from a region on both ends in the arrangement direction to a region on the connector fitting side and a plurality of circuit board side signal terminals in the arrangement direction. An electrical connection structure between a circuit board on which a ground pattern is formed so as to surround the circuit board side signal terminals and the connector is described.

  As shown in FIG. 9, the shield connector C connected to the terminals provided on the circuit board CB is connected to the circuit board side signal terminals A1 and A1 arranged in parallel corresponding to the two signals. Two connector-side signal terminals A2 and A2 to be connected and a pair of connector-side ground terminals connected to the circuit board-side ground terminals B1 and B1 arranged so as to sandwich the circuit board-side signal terminals A1 and A1 Some are provided with B2 and B2.

Japanese Unexamined Patent Publication No. 2015-41587 JP-A-8-180942

  The electrical connection structure between the shield connector C and the circuit board CB is such that the signal terminals A1 and A2 corresponding to the signal lines of the circuit board CB and the shield connector C have a ground corresponding to the ground of the circuit board CB and the shield connector C. Since the distance between the terminals B1 and B2 is short, when the phase of the two signal lines is switched by 180 °, the electric field strength between the signal terminals A1 and A2 and the ground terminals B1 and B2 increases, and the coupling between the signal and the ground occurs ( As shown in FIG. 9B, noise on the signal is radiated through the ground, and this radiated noise has a problem of adversely affecting the electrical components.

  In order to solve this problem, it is conceivable to cover the terminal corresponding to the signal line with a shield shell or the like. However, like the shield connector described in Patent Document 1, the mounting portion of the terminal on the circuit board is covered with the shield shell. It is difficult to cover, and the periphery of the mounting part of the terminal is exposed from the shield shell, and as a result, it is difficult to suppress radiation noise through the ground.

  Further, although the electrical connection structure described in Patent Document 2 can discharge the electric charge charged on the cable of the connector before the connection between the circuit board and the connector is completed, the ground pattern is formed on the circuit board. Therefore, the terminals corresponding to the signal lines of the circuit board and the connector cannot be covered with the ground except on the circuit board, and as a result, it is difficult to suppress radiation noise through the ground. .

  This invention is made | formed in view of the above, Comprising: It aims at providing the shield connector which can suppress generation | occurrence | production of the radiation noise through a ground effectively, and an electrical connection structure.

  In order to solve the above-described problems and achieve the object, the shield connector according to claim 1 of the present invention includes two circuit board-side signal terminals arranged in parallel corresponding to the two signal lines whose polarities are reversed. And a pair of circuit board-side ground terminals provided at both ends of the two circuit board-side signal terminals in the arrangement direction are connected to the two circuit board-side signal terminals of the patterned circuit board, respectively. Two connector-side signal terminals and a pair of connector-side ground terminals connected to the circuit board-side ground terminal, and a shield connector having a shield portion that performs a shield function. Each connector side signal terminal of the side signal terminal has a signal terminal plate-like spring portion bent in a dogleg shape, and a tip portion bent inside the signal terminal plate-like spring portion serves as a contact, Each connector-side ground terminal of the pair of connector-side ground terminals has a ground terminal plate-like spring portion bent in a U shape in the same direction as the signal terminal plate-like spring portion, and the ground terminal plate-like spring portion One end side of the pair of connector side ground terminals is connected to the shield part of the ground terminal plate-like spring part, and the tip part bent to the inside of the other end side is connected to the shield part. And a shield cover portion for connecting the end portions of the two connector sides so as to bridge each other while covering the signal terminal plate spring portions of the two connector-side signal terminals.

  In order to solve the above-described problems and achieve the object, an electrical connection structure according to claim 2 of the present invention is provided with two circuit board side signals arranged in parallel corresponding to two signal lines having reversed polarities. A circuit board on which a terminal and a pair of circuit board side ground terminals provided at both ends of the two circuit board side signal terminals are arranged and connected to each of the two circuit board side signal terminals Electrical connection between the two connector-side signal terminals and a shield connector having a shield part that has a shield function and is provided with a pair of connector-side ground terminals connected to the circuit board-side ground terminal In the structure, the shield connector includes a signal terminal plate-like spring portion in which each connector-side signal terminal of the two connector-side signal terminals is bent in a dogleg shape. A ground terminal plate spring in which the connector-side ground terminals of the pair of connector-side ground terminals are bent in a dogleg shape in the same direction as the signal terminal plate-like spring portion. One end side of the ground terminal plate-like spring part is connected to the shield part, and a tip part bent inside the other end side serves as a contact, and the ground of the pair of connector side ground terminals A shield cover portion for connecting the end portions of the terminal plate spring portions connected to the shield portion to bridge each other while covering the signal terminal plate spring portions of the two connector-side signal terminals; The circuit board has a connecting portion patterned so that the pair of circuit board side ground terminals are connected to each other in the direction in which the two circuit board side signal terminals are arranged. Features and That.

  When the shield connector according to claim 1 of the present invention is connected to the circuit board, the shield connector is exposed from the shield portion of the two connector-side signal terminals arranged between the pair of connector-side ground terminals. The signal terminal plate spring portion can be covered with the shield cover portion, and the signal terminal plate spring portion and the ground terminal plate spring portion are bent so as to reduce the dog-shaped bending angle. Accordingly, the entire signal terminal plate spring portion can be covered while bringing the shield cover portion closer to the signal terminal plate spring portion. Therefore, when the phases of the two signal lines whose polarities are reversed are switched by 180 °. This prevents the electric field strength between the terminal corresponding to the signal line and the terminal corresponding to the ground from increasing, and effectively suppresses the generation of radiation noise through the ground. Can.

  When the electrical connection structure according to claim 2 of the present invention is connected to the circuit board, the electrical connection structure is exposed from the shield portion of the two connector-side signal terminals arranged between the pair of connector-side ground terminals. The signal terminal plate spring portion can be covered by the shield cover portion, and the signal terminal plate spring portion and the ground terminal plate spring portion are bent so as to reduce the angle of the dogleg shape. Thus, the entire signal terminal plate spring portion can be covered while bringing the shield cover portion closer to the signal terminal plate spring portion, and further, the pair of connector side ground terminals are connected to each other. Since the pair of circuit board side ground terminals are connected to each other in the arrangement direction of the circuit board side signal terminals by the connecting portion, both the arrangement directions of the circuit board side signal terminals are both Since the circuit board side signal terminal can be surrounded by a ground pattern continuous from the position in the region along the alignment direction, when the phase of the two signal lines whose polarities are reversed is switched by 180 °, the terminal corresponding to the signal line And the terminal corresponding to the ground can be prevented from becoming stronger, and the generation of radiation noise through the ground can be effectively suppressed.

1A is a side view of an in-vehicle camera incorporating a shield connector and an electrical connection structure according to an embodiment of the present invention, and FIG. 1B is a perspective view of the in-vehicle camera shown in FIG. . 2A is a top view of the shield connector according to the embodiment of the present invention, and FIG. 2B is a front view of the shield connector viewed from the side connected to the circuit board. FIG. 3 is a cross-sectional view of the shield connector. FIG. 4 is a perspective view of the shield shell attached to the inner housing. FIG. 5 is a perspective view of the shield shell shown in FIG. 4 viewed from different directions. FIG. 6 is a diagram illustrating a circuit board-side signal terminal, a circuit board-side ground terminal, and a connecting portion that are patterned on the circuit board. FIG. 7 is a diagram schematically showing a state in which the circuit board and the shield connector are connected. FIG. 8A is a diagram in which the outer structure of the shield shell and the outer structure of the circuit board are omitted in order to explain the state in which the circuit board and the shield connector are connected to each other, and FIG. It is the figure which expanded the connection part periphery of this circuit board and a shield connector. FIG. 9 is a diagram for explaining the problems of the prior art.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a shield connector and an electrical connection structure according to the present invention will be described in detail with reference to the drawings.

1A is a side view of an in-vehicle camera 200 in which a shield connector 1 and an electrical connection structure 100 according to an embodiment of the present invention are incorporated, and FIG. 1B is an in-vehicle camera 200 shown in FIG. It is a perspective view. 2A is a top view of the shield connector 1 according to the embodiment of the present invention, and FIG. 2B is a front view of the shield connector 1 viewed from the side connected to the circuit board 80. FIG. FIG. 3 is a cross-sectional view of the shield connector 1. FIG. 4 is a perspective view of the shield shell 20 attached to the inner housing 10. FIG. 5 is a perspective view of the shield shell 20 shown in FIG. 4 viewed from different directions. FIG. 6 is a diagram showing a circuit board side signal terminal 81, a circuit board side ground terminal 82, and a connecting portion 90 that are patterned on the circuit board 80. FIG. 7 is a diagram schematically showing a state in which the circuit board 80 and the shield connector 1 are connected. FIG. 8A is a diagram in which the outer structure of the shield shell 20 and the outer structure of the circuit board 80 are omitted in order to explain a state in which the circuit board 80 and the shield connector 1 are connected. (A) is the figure which expanded the connection part periphery of the circuit board 80 and the shield connector 1 of (a).
2 and 3 also show a part of the device-side connector 70 in addition to the shield connector 1.
The shield connector 1 and the electrical connection structure 100 according to the embodiment of the present invention are incorporated in the in-vehicle camera 200.
Hereinafter, the shield connector 1 and the electrical connection structure 100 will be described while explaining the configuration of the in-vehicle camera 200.

  The in-vehicle camera 200 includes a device-side connector 70, a camera case 73, and the shield connector 1 that is connector-fitted to the device-side connector 70.

The shield connector 1 is configured such that each of the female terminals 13 of the shielded electric wire 14 formed by bundling the four electric wires 12 having the female terminals 13 attached to the terminal portions by covering the outer periphery with a covering material including a shielding material and an insulating material. An inner housing 10 provided with four terminal accommodating chambers 11 to be accommodated, a shield shell 20 as a shield portion attached to the inner housing 10 so as to cover the outer periphery of the inner housing 10, and a state in which the shield shell 20 is attached The inner housing 10 is accommodated therein, and the outer housing 60 is provided with a connector fitting portion with the device-side connector 70.
A seal member 65 is fixed to the rear end opening of the outer housing 60 by a holder 64.

The shielded electric wire 14 is configured by covering the four electric wires 12 with a multilayer covering material including a shield layer.
In addition, the four electric wires 12 which comprise the shield electric wire 14 are signal wires which transmit a signal, and it carries out pairing for every two electric wires 12, and transmits two signals with polarity reversed. It has become.

The inner housing 10 has a block shape made of an insulating resin material, and four terminal accommodating chambers 11 are provided in two stages.
One end of the connector-side signal terminal 30 is connected to the female terminal 13 accommodated in the four terminal accommodating chambers 11.

The connector-side signal terminal 30 has a signal terminal plate-like spring portion 31 bent in a U-shape, and a tip portion bent inside the signal terminal plate-like spring portion 31 is a circuit board-side signal terminal described later. 81 is a contact point.
More specifically, the connector-side signal terminal 30 is provided with a contact portion 32 protruding in a hemispherical shape at the distal end portion of the signal terminal plate spring portion 31, and the contact portion 32 is formed of the signal terminal plate spring portion 31. The circuit board side signal terminal 81 is connected to the circuit board side signal terminal 81 by being pressed against the circuit board side signal terminal 81 using a spring force.

The shield shell 20 is a shield part formed in a cylindrical shape that covers the outer periphery of the inner housing 10 when the plate-like metal member is pressed, bent, or the like.
The shield shell 20 is a shield for connecting two pairs of one connector-side ground terminal 40 and one pair of connector-side ground terminals 40 connected to a circuit board-side ground terminal 82 described later. The cover part 50 is provided integrally.

  The connector-side ground terminal 40 has a ground terminal plate-like spring portion 41 bent in a dogleg shape in the same direction as the signal terminal plate-like spring portion 31, and one end side of the ground terminal plate-like spring portion 41 is a shield shell. A tip end connected to 20 and bent inward on the other end side is a contact point.

The shield cover portion 50 is configured such that the end portions of the pair of connector side ground terminals 40 on the side connected to the shield shell 20 of the ground terminal plate spring portion 41 are the signal terminal plate springs of the two connector side signal terminals 30. It is a part connected so that it may bridge while covering the part 31. FIG.
The shield cover 50 is provided on each pair of connector-side ground terminals 40 in each group.

  The shield cover portion 50 is provided at the end opposite to the tip portion bent inward of the ground terminal plate spring portion 41 bent in a U-shape, thereby forming a ground functioning as a spring. The terminal plate-like spring portion 41 is effectively used at one end portion and is exposed from the shield shell 20 of the two connector-side signal terminals 30 disposed between the pair of connector-side ground terminals 40. The spring part 31 can be covered.

  The outer housing 60 is made of an insulating resin material. As shown in FIG. 3, the outer housing 60 seals the hood portion 61 formed in a hood shape so as to surround the outer periphery of the shield shell 20 and the wire outlet 60a. It has a seal member holding and holding portion 62 for holding and holding the seal member 65, and a lock arm portion 63 that locks to a lock protrusion 71a provided on a connector portion 71 (to be described later) of the device-side connector 70.

  As shown in FIG. 1, the device-side connector 70 includes a connector portion 71 that is a portion where the shield connector 1 and the connector are fitted, and a cover portion 72.

The connector part 71 has a cylindrical shape, and the hood part 61 of the outer housing 60 is fitted into the cylinder.
The connector portion 71 is provided with a lock protrusion 71 a that locks the lock arm portion 63 of the outer housing 60.

  The cover portion 72 is a portion that closes the opening of the end portion opposite to the one end side to which the lens 73a of the camera case 73 is attached.

The camera case 73 is a part that accommodates camera functional parts including the circuit board 80, and a lens 73a is attached to one end side.
On the surface of the circuit board 80, electronic components are mounted and a conductor pattern related to the control circuit is formed.
As the conductive pattern formed on the circuit board 80, two sets of two circuit board side signal terminals 81 arranged in parallel corresponding to the two signal lines having reversed polarities correspond to the four electric wires 12. Is provided.
Two sets of circuit board side signal terminals 81 are arranged so that different sets of circuit board side signal terminals 81 face each other.

  In addition, as a conductive pattern formed on the circuit board 80, a pair of circuit board side ground terminals 82 correspond to two sets of circuit board side signal terminals 81, and two sets of circuit board side signal terminals 81 face each other. Are provided so as to extend to both end positions of each set of circuit board side signal terminals 81.

  Further, the conductive pattern formed on the circuit board 80 includes a connecting portion 90 such that a pair of circuit board side ground terminals 82 are connected to each other in the direction of arrangement of the two circuit board side signal terminals of each set. Is provided.

  The connecting portion 90 connects a pair of circuit board side ground terminals 82 between two sets of circuit board side signal terminals 81 arranged to face each other along the arrangement direction of the two circuit board side signal terminals 81 of each set. It is like that.

When the shield connector 1 is connected to the circuit board 80 by the connector fitting of the shield connector 1 and the device-side connector 70, as shown in FIG. The signal terminal plate-like spring part 31 exposed from the shield shell 20 of the two connector-side signal terminals 30 arranged between the side ground terminals 40 can be covered by the shield cover part 50.
Moreover, the shield cover 50 is brought closer to the signal terminal plate spring 31 by bending the signal terminal plate spring 31 and the ground terminal plate spring 41 so as to reduce the angle of the dogleg shape. The entire signal terminal plate spring 31 can be covered.

  In addition, since the pair of circuit board side ground terminals 82 to which the pair of connector side ground terminals 40 of each set are connected are connected to each other in the arrangement direction of the circuit board side signal terminals 81 of each set by the connecting portion 90, Each set of circuit board-side signal terminals 81 can be surrounded by a ground pattern that is continuous from the both ends of the set of circuit board-side signal terminals 81 in a region along the arrangement direction.

  When the shield connector 1 according to the embodiment of the present invention is connected to the circuit board 80, the shield connector 1 of the two connector-side signal terminals 30 disposed between the pair of connector-side ground terminals 40 is connected to the circuit board 80. The exposed signal terminal plate spring portion 31 can be covered by the shield cover portion 50, and the signal terminal plate spring portion 31 and the ground terminal plate spring portion 41 reduce the angle of the dogleg shape. By being bent, the entire signal terminal plate spring portion 31 can be covered while bringing the shield cover portion 50 closer to the signal terminal plate spring portion 31, so that the phase of the two signal lines whose polarities are inverted is 180. ° When switching, it prevents the electric field strength between the terminal corresponding to the signal line and the terminal corresponding to the ground from increasing, effectively generating radiation noise through the ground It can be suppressed.

  In addition, when the electrical connection structure 100 according to the embodiment of the present invention is connected to the circuit board 80, the shield of the two connector-side signal terminals 30 disposed between the pair of connector-side ground terminals 40 of each set. The signal terminal plate spring portion 31 exposed from the shell 20 can be covered by the shield cover portion 50, and the signal terminal plate spring portion 31 and the ground terminal plate spring portion 41 can reduce the bending angle of the V shape. By being bent in such a manner, it is possible to cover the entire signal terminal plate spring portion 31 while bringing the shield cover portion 50 closer to the signal terminal plate spring portion 31, and furthermore, a pair of connector-side ground terminals 40. Since the pair of circuit board side ground terminals 82 connected to each other are connected to each other in the arrangement direction of the circuit board side signal terminals 81 by the connecting portion 90, the circuit board side signal Since the circuit board-side signal terminal 81 can be surrounded by a ground pattern continuous from the both end positions of the child 81 in the arrangement direction to the region along the arrangement direction, when the phases of the two signal lines whose polarities are reversed are switched by 180 °, It is possible to prevent an increase in electric field strength between the terminal corresponding to the signal line and the terminal corresponding to the ground, and to effectively suppress the generation of radiation noise through the ground.

  In addition, although the shield connector 1 and the electrical connection structure 100 according to the embodiment of the present invention have been incorporated into the in-vehicle camera, the invention is not limited thereto, and the shield connector 1 and the electrical connection structure 100 may be incorporated into other devices.

  In addition, the shield connector 1 and the electrical connection structure 100 according to the embodiment of the present invention include four electric wires 12 corresponding to four signal lines, and the circuit board 80 has two circuit board side signal terminals 81. Are provided with two sets of circuit board side ground terminals 82, and the shield connector 1 is provided with two sets of two connector side signal terminals 30 and two sets of one pair of connector side ground terminals 40. However, the present invention is not limited to this, and at least two electric wires corresponding to two signal lines whose polarities are inverted are provided, and the circuit board 80 has 2 electric wires corresponding to the two signal lines. One circuit board side signal terminal 81 and a pair of circuit board side ground terminals 82 are provided, and the shield connector 1 is provided with two connector side signal terminals 30 and a pair of connector side ground terminals 40. It is sufficient that is.

  The invention made by the present inventor has been specifically described based on the above-described embodiments of the invention. However, the present invention is not limited to the above-described embodiments of the invention and does not depart from the gist thereof. Various changes can be made.

DESCRIPTION OF SYMBOLS 1 Shield connector 10 Inner housing 11 Terminal accommodating chamber 12 Electric wire 13 Female terminal 14 Shield electric wire 20 Shield shell (shield part)
DESCRIPTION OF SYMBOLS 30 Connector side signal terminal 31 Signal terminal plate-like spring part 32 Contact part 40 Connector side ground terminal 41 Ground terminal plate-like spring part 41a One end side 41b The other end side 50 Shield cover part 60 Outer housing 60a Electric wire outlet 61 Hood part 62 Seal Member holding / accommodating part 63 Lock arm part 64 Holder 65 Seal member 70 Device side connector 71 Connector part 71a Lock projection part 72 Cover part 73 Camera case 73a Lens 80 Circuit board 81 Circuit board side signal terminal 82 Circuit board side ground terminal 90 Connection part 100 Electrical connection structure 200 In-vehicle camera

Claims (2)

Two circuit board side signal terminals arranged in parallel corresponding to the two signal lines whose polarities are reversed, and a pair of circuit board side grounds provided at both ends in the arrangement direction of the two circuit board side signal terminals A pair of connector-side ground terminals connected to the two circuit board-side ground terminals, and two connector-side signal terminals connected to the two circuit board-side signal terminals of the circuit board on which the terminals are patterned. In a shielded connector having a shield part having a shield function,
Each connector side signal terminal of the two connector side signal terminals is:
It has a signal terminal plate spring portion bent in a U shape, and the tip portion bent inside the signal terminal plate spring portion becomes a contact,
Each connector-side ground terminal of the pair of connector-side ground terminals is:
A ground terminal plate spring portion bent in a dogleg shape in the same direction as the signal terminal plate spring portion, one end side of the ground terminal plate spring portion is connected to the shield portion, and the other end The tip bent to the inside of the side becomes a contact point,
Bridge the end portions of the pair of connector side ground terminals on the side connected to the shield portion of the ground terminal plate spring portion while covering the signal terminal plate spring portions of the two connector side signal terminals. A shield connector characterized by having a shield cover portion connected so as to pass. Two circuit board side signal terminals arranged in parallel corresponding to the two signal lines whose polarities are reversed, and a pair of circuit board side grounds provided at both ends in the arrangement direction of the two circuit board side signal terminals A circuit board on which a terminal is patterned, two connector-side signal terminals connected to each of the two circuit board-side signal terminals, and a pair of connector-side ground terminals connected to the circuit board-side ground terminal And an electrical connection structure with a shield connector having a shield part having a shield function,
The shield connector is
Each connector side signal terminal of the two connector side signal terminals is
It has a signal terminal plate spring portion bent in a U shape, and the tip portion bent inside the signal terminal plate spring portion becomes a contact,
Each connector-side ground terminal of the pair of connector-side ground terminals is
A ground terminal plate spring portion bent in a dogleg shape in the same direction as the signal terminal plate spring portion, one end side of the ground terminal plate spring portion is connected to the shield portion, and the other end The tip bent to the inside of the side becomes a contact point,
Bridge the end portions of the pair of connector side ground terminals on the side connected to the shield portion of the ground terminal plate spring portion while covering the signal terminal plate spring portions of the two connector side signal terminals. It has a shield cover that connects to pass,
The circuit board is
The electrical connection structure, wherein the pair of circuit board side ground terminals have a connecting portion that is patterned so that the two circuit board side signal terminals are connected to each other in the arrangement direction of the two circuit board side signal terminals.

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