TW201347311A - Connector - Google Patents

Abstract

The connector of the present invention ensures ground connection and makes the signal transmission stable. A connector 1 comprises: an insulating body 4 holding a flat electric cable 2, being capable of engaging with the away connector 3, and having insulating characteristic; and a housing component 5 covering the flat electric cable 2 and having an electric-conductive characteristic of the other side. The housing component 5 has a first connection part 52 and a second connection part 53. Said first connection part 52 is arranged in opposition to the ground face 2D of the flat electric cable 2 and separated therefrom by a predetermined distance, and capable of touching a first ground connection part 31; said second connection part is extended from the first connection part 52 toward the ground face 2D, and touching the ground face 2D; and under the engagement state with the away connector 3, the second connection part 53 is formed at the position where the flat electric cable 2 is held and a terminal fixture stands opposite.

Description

Connector

The present invention relates to a connector, in particular, a flexible flat cable (FFC) or a flexible printed circuit board (hereinafter referred to as "FPC"), or a flat-shaped electrical connecting member ( Also known as "flat cable", the connector that is connected to the electrical connection of the connector of the other party.

In an automobile, various electronic devices are mounted, and electric power, a control signal from a control device, and the like are transmitted from an electric power source such as a battery to an electronic device, and wired into a wire harness. The wire harness is composed of a wire and a connector, and is designed to reduce the size and weight of the wire harness, increase the density of the transmitted signal, and increase the speed. The wire is a flat cable such as FFC or FPC. In the connector provided at the terminal of the flat cable, for example, an insulator portion that holds the flat cable and an article that covers the shell portion of the insulator portion are provided (for example, see Patent Document 1).

As shown in FIGS. 8 and 9, in the conventional connector 100 described in Patent Document 1, the insulator portion 101 includes a base insulator 102 that sandwiches and holds the flat cable FFC, and a cover insulator 103. The case portion 104 includes There are a case 105 provided on the side of the base insulator 102 and a case cover 106 provided on the side of the cover insulator 103. Further, the case 105 is formed by a contact portion 107 that is in contact with the shell portion of the counterpart connector, and a spring piece 110 that passes through the through hole 108 of the base insulator 102 and contacts the shield layer 109 of the flat cable FFC. Such a connector 100 is obtained by bringing the contact portion 107 into contact with the counterpart connector. The shell portion (ground) and the spring piece 110 are brought into contact with the shield layer 109 of the flat cable FFC, and the potential of the shield layer 109 is referenced, thus constituted.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent No. 4090060

However, in the conventional connector 100 described in Patent Document 1, the case portion 104 is attached along the insulator portion 101, and the both end portions of the case 105 and the case cover 106 are fixed only to the insulator portion 101, and thus the insulator portion 101 appears. The warpage, or the deformation of the case 105 itself due to the reaction force applied from the shell portion of the counterpart connector to the contact portion 107, hinders the contact between the spring piece 110 and the shield layer 109. Accordingly, if the contact of the spring piece 110 is hindered, the grounding resistance of the shield layer 109 is increased, and noise is generated in the electrical signal between the connectors, which may cause unstable signal transmission.

Accordingly, it is an object of the present invention to provide a connector that ensures a ground connection and stabilizes signal transmission.

In order to achieve the above object, a first aspect of the connector according to the present invention is an end portion of a flat-shaped electrical connecting member having an electrical connection portion on one surface and a ground contact surface on the other surface, and the electrical connection portion is provided. a connector that is in contact with a counterpart electrical connection portion of the counterpart connector and that connects the ground contact surface to the ground contact portion of the counterpart, and includes a holding member and a case member; and the holding member holds the electrical connection member Can be fitted into the above-mentioned counterpart connector and have insulation; the shell member is covered with The other side of the electrical connecting member has electrical conductivity; the shell member is provided with a first connecting portion and a second connecting portion; and the first connecting portion is disposed and isolated from a ground plane of the electrical connecting member a predetermined distance and contact with the ground connection portion of the other party; the second connection portion extends from the first connection portion toward the ground plane and abuts against the ground plane; and is in a state of being fitted to the counterpart connector The second connecting portion is formed at a position opposing the electrical connection portion of the other electrical connection member.

According to a second aspect of the invention, in the connector according to the first aspect of the invention, the second connecting portion of the case member is provided to sandwich a part of the holding member and to communicate with the other ground connection portion Relative position.

According to a third aspect of the present invention, in the connection according to the first or second aspect of the invention, the case member is insert-molded into the holding member.

In the connector according to any one of the first to third aspects of the present invention, the connector according to the first aspect of the present invention, wherein the connector member is engaged with the latch portion of the counterpart connector sheet.

In the connector according to any one of the first to fourth aspects of the present invention, the connector according to the first aspect of the present invention, wherein the electrical connection member is pressed from one side to the other side of the housing member Press the part.

In the connector according to any one of the first to fifth aspects of the present invention, the holding member is provided with a holding member main body located on the other surface side of the electric connecting member, and A pressing member that presses the electrical connecting member from one side toward the holding member body.

According to the first aspect of the invention of the present invention, the first connecting portion of the case member is in contact with the counterpart ground connecting portion, and the second connecting portion is abutted against the electrical connecting member. The ground plane is grounded and the ground plane is grounded to the ground connection. The potential of the ground plane can be referenced. At this time, in the fitting state with the counterpart connector, the second connecting portion is located at a position where the electrical connecting member is sandwiched and faces the other electrical connecting portion, that is, in the cross-sectional direction of the connector that is fitted to each other, according to the other electric The connection portion, the electrical connection portion of the electrical connection member, the ground contact surface, and the second connection portion are arranged in parallel, and the ground contact surface is pressed against the pressing force acting on the electrical connection portion of the electrical connection member from the other electrical connection portion. Second connection. Therefore, the contact state between the ground contact surface and the second connection portion can be satisfactorily maintained, and the ground connection can be ensured, whereby the signal transmission between the electrical connection member and the counterpart connector can be stabilized.

According to the second aspect of the invention of the present invention, the second connecting portion of the case member is provided at a position where a part of the holding member is opposed to the other side ground connecting portion, and the ground connection portion is connected from the other side. A part of the holding member applies a pressing force toward the second connecting portion, and the pressing force can press the second connecting portion against the ground contact surface of the electrical connecting member. Therefore, the contact state between the ground plane and the second connection portion can be maintained more satisfactorily, and the ground connection can be ensured.

According to the third aspect of the invention of the present invention, by inserting and molding the shell member to the holding member, it is possible to improve the physical properties between the shell member and the holding member, and in the case where the members are assembled individually. The warpage and deformation of the shell member and the retaining member can be suppressed, and the second connecting portion can be prevented from leaving the grounding surface of the electrical connecting member.

According to the fourth aspect of the invention of the present invention, by engaging the engagement piece formed in the case member with the lock portion of the counterpart connector, the engagement force from the lock portion can be directly applied to The engaging piece is a shell member. Therefore, in the fitting state with the counterpart connector, the shell member can be positioned at a predetermined position with respect to the counterpart connector, and the first connection portion can surely contact the ground connection portion of the counterpart to ensure the ground connection.

According to the fifth aspect of the invention of the present invention, the grounding surface of the electrical connecting member is directed toward the second connecting portion by pressing the electrical connecting member toward the other surface side by the pressing portion formed in the case member. By pressing, the contact state between the ground plane and the second connecting portion can be made better.

According to the sixth aspect of the invention of the present invention, the holding member body and the pressing member are configured by the holding member, and the pressing member presses the electric connecting member from one side toward the holding member body, whereby the electric connecting member can be The grounding surface is pressed toward the second connecting portion, and the contact state between the grounding surface and the second connecting portion is made better.

1‧‧‧Connector

2‧‧‧Flat cable (electrical connection member)

2A‧‧‧Electrical connection

2B‧‧‧ board

2C‧‧‧Shield

2D‧‧‧ ground plane

2E‧‧‧ recess

3‧‧‧Partner connector

3A‧‧‧ Shell

3B‧‧‧End hand clamp (electrical connection part)

3C‧‧‧Metal cover (partial ground connection)

3D‧‧‧ openings

3E‧‧‧ Grounding circuit connecting piece

4‧‧‧Insulator (holding member)

5‧‧‧Shell components

31‧‧‧First grounding connection

32‧‧‧Second grounding connection

41‧‧‧ Body part (holding member body)

42‧‧‧ Pressing members

43‧‧‧ inserted through hole

44‧‧‧ Rear block

45‧‧‧Intermediate block

46‧‧‧Outstanding fittings

46A‧‧‧Resin cover (part of the holding member)

47‧‧‧Clamping protrusion

48‧‧‧Slit

51‧‧‧Shell body

52‧‧‧First connection

53‧‧‧Second connection

53A‧‧‧ Front End

54‧‧‧ Pressing Department

55‧‧‧Clocks

100‧‧‧Connector

101‧‧‧Insulators

102‧‧‧Base insulator

103‧‧‧Overlay insulator

104‧‧‧Shell Department

105‧‧‧ shell

106‧‧‧Shell cover

107‧‧‧Contacts

108‧‧‧through holes

109‧‧‧Shield

110‧‧ ‧ spring piece

1 is a schematic perspective view of a connector according to an embodiment of the present invention.

Figure 2 is a perspective view of the connector as seen from the front.

Fig. 3 is a perspective view showing the connector as seen from the back side.

Fig. 4 is an exploded perspective view of the above connector.

5(A) and (B) are perspective views showing the case member provided in the above connector.

Figure 6 is a cross-sectional view of the connector and the counterpart connector.

7(A) and 7(B) are cross-sectional views showing a state in which the connector and the counterpart connector are fitted.

Figure 8 is an exploded perspective view of a connector of the prior art.

Figure 9 is a cross-sectional view of a connector of the prior art.

Hereinafter, a connector according to an embodiment of the present invention will be described with reference to Figs. 1 to 7 . The connector 1 of the present embodiment is provided at a terminal connected to a flat cable 2 for use as an electrical connection member for an electronic device mounted on an automobile or the like, and is used for the flat cable 2 It is electrically connected to the counterpart connector 3 such as a socket connector provided in a dash board such as an automobile.

The flat cable 2 is a flexible flat cable (FFC), a flexible printed circuit board (Flexible Printed Circuit: FPC), etc., and has a flat cross section and a long strip shape, and has a long side toward the long side. The plurality of conductors extending in a continuous direction and a pair of insulating covers sandwiching and covering the conductors are formed. In the end portion of the flat cable 2, on one side of the flat cross section (the lower side of FIGS. 1, 2, 4, 6, and 7, and the upper side of FIG. 3), an electrical connection portion 2A is provided in which the insulating cover is removed to expose the conductor. On the other surface side (the upper side of FIGS. 1, 2, 4, 6, and 7 and the lower side of FIG. 3) of the flat cable 2, a substrate 2B made of an insulator and a conductor made of the substrate 2B are laminated. Shield 2C. The surface of the shield layer 2C becomes the ground plane 2D.

The counterpart connector 3 is mounted on a substrate (not shown), and the flat cable 2 is connected to the wiring on the substrate. As shown in FIG. 1, the counterpart connector 3 includes a casing 3A made of an insulating resin, a plurality of terminal clamps 3B provided on the casing 3A and connected to the electrical connection portion 2A as a counterpart electrical connection portion, and a connection. The ground contact surface 2D serves as a metal cover 3C for the ground contact portion of the other side, and is formed in an elongated shape along the width direction of the flat cable 2. An opening 3D that opens toward the connector 1 side is formed in the outer casing 3A, and the connector 1 can be fitted into the opening 3D. At the two end portions of the counterpart connector 3, a lock portion (not shown) that locks the fitted connector 1 and prevents it from coming off is provided. The plurality of terminal jigs 3B are connected to a wiring (not shown) and are fixed to the casing 3A, and are supported by the inside of the casing 3A so as to be elastically deformable in the direction of the opening 3D (the vertical direction in FIG. 1). The metal cover 3C is provided with a plurality of grounding circuit connecting pieces 3E, and is soldered to a conductor pattern connected to a grounding circuit of a substrate (not shown) by soldering or the like. Further, the metal cover 3C is formed with a lock portion (not shown), and as shown in FIGS. 6 and 7, an opening portion facing the terminal clamp 3B is formed. Inside the 3D, a first ground connection portion 31 and a second ground connection portion 32 are provided.

As shown in FIGS. 1 to 4, the connector 1 includes an insulator 4 and a case member 5. The insulator 4 holds the distal end portion of the flat cable 2 and can be fitted to the counterpart connector 3 as a holding member. The case member 5 covers the shield layer 2C side (the other surface side) of the flat cable 2 and has electrical conductivity. The insulator 4 is provided with a main body portion 41 as a holding member main body and a rear side of the main body portion 41 (one side of the flat cable 2, and the lower side of FIGS. 1, 2, 4, 6, and 7). The upper side of the 3) is mounted with the pressing member 42. The main body portion 41 and the pressing member 42 of the insulator 4 are formed by injection molding of an insulating synthetic resin, and are integrally formed with the case member 5 by insert molding in the main body portion 4.

The main body portion 41 of the insulator 4 is provided with an insertion hole 43 through which the flat cable 2 is inserted from the rear side toward the front side, and has a rear side closer to the insertion hole 43 and located on one side of the flat cable 2 The block 44, the intermediate block 45 on the other side of the flat cable 2 (on the side of the shield layer 2C), and the protruding fitting portion 46 projecting forward from the intermediate block 45 toward the front side (the side of the counterpart connector 3). On one side of the intermediate block 45, as shown in FIG. 3, a recessed portion into which a pressing member 42 to be described later is fitted is provided. Engagement projections 47 for the outer casing 3A for engaging the counterpart connector 3 are formed at both ends of the protruding fitting portion 46 in the width direction. The case member 5 is built in the inner block 45 and the protruding fitting portion 46 by insert molding, and a part (a first connecting portion 52 to be described later) is exposed on the surface of the protruding fitting portion 46. As shown in FIG. 4, the pressing member 42 is formed in a plate shape as a whole, and a slit 48 penetrating the pressing member 42 is formed in the vicinity of both end portions.

As shown in FIG. 5, the shell member 5 is formed by punching a conductive metal sheet and performing bending, and includes a flat shell body 51, a first connecting portion 52, and a second connecting portion 53, The pressing portion 54 and the engaging piece 55 are provided. The first connecting portion 52 is located on the front side (the lower left side in FIG. 5 ) of the case body 51 and is exposed to the protruding fitting portion 46 . The second connecting portion 53 is cut into a plurality of places (three in the present embodiment) of the first connecting portion 52 and bent downward. The pressing portion 54 bends both ends of the rear side (upper right side in FIG. 5) of the case body 51 in a slightly cut shape. The engaging piece 55 protrudes from the front end side of the case body 51 toward the side.

As shown in Fig. 7(B), the first connecting portion 52 of the case member 5 is formed to be accessible when the protruding fitting portion 46 of the insulator 4 is fitted into the opening portion 3D of the counterpart connector 3. The first ground connection portion 31. The first ground connection portion 31 has a function as a spring plate, and acts to bias the first connection portion 52 and the protruding fitting portion 46 toward the terminal fixture 3B with an elastic force. The second connecting portion 53 is built in the protruding fitting portion 46, that is, covered by the resin cover portion 46A of a part of the protruding fitting portion 46, and a portion of the front connecting curved portion 53A of the second connecting portion 53 is exposed. The fitting portion 46 is protruded. As shown in FIG. 7(A), the protruding fitting portion 46 is formed to be in contact with the second ground connection in a fitting state in which the protruding fitting portion 46 of the insulator 4 is fitted into the opening portion 3D of the counterpart connector 3. Part 32. Further, the second connecting portion 53 is provided to abut against the ground contact surface 2D of the shield layer 2C of the flat cable 2.

As described above, the first connecting portion 52 of the case member 5 contacts the first ground connecting portion 31 (FIG. 7(B)), and the second connecting portion 53 contacts the grounding surface 2D and the second ground connecting portion 32 (FIG. 7). (A)), the metal cover 3C of the counterpart connector 3 and the shield layer 2C of the flat cable 2 are grounded. In this ground connection state, the second connecting portion 53 of the case member 5 is formed to sandwich the flat cable 2 and is located at a position opposite to the terminal jig 3B of the counterpart connector 3. The terminal clamp 3B has a function as a spring plate and acts to impart an elastic force to the potential energy of the flat cable 2 toward the second ground connection portion 32. Therefore, the ground contact surface 2D of the flat cable 2 to which the potential energy is applied by the terminal jig 3B is formed to be pressed against the second connection portion 53.

The second connecting portion 53 of the above-described case member 5 is held as shown in Fig. 7(A). The resin cover portion 46A belonging to a part of the insulator 4 is disposed at a position opposite to the second ground connection portion 32 of the counterpart connector 3. Thereby, when the pressing force is applied to the second connecting portion 53 from the second ground connecting portion 32 via the resin cover portion 46A, the second connecting portion 53 can be pressed against the ground contact surface 2D of the flat cable 2 by the pressing force.

When the case member 5 is fitted into the insulator 4, as shown in FIG. 2, a part of the case body 51 is exposed on the other surface side of the protrusion engagement portion 46 as described above, and the engagement piece 55 is moved from the engagement protrusion 47 toward the width. The outer side protrudes outward, and a pair of pressing portions 54 protrude from one side of the main body portion 41. When the connector 1 is inserted into the opening 3D of the counterpart connector 3, the engagement piece 55 is engaged with the lock portion (not shown) provided in the counterpart connector 3.

In the flat cable 2, when the electrical connection portion 2A is inserted into the insertion hole 43 of the main body portion 41 toward the one side (the lower side in FIG. 1), the width is positioned between the pair of pressing portions 54. The direction is disposed on one side of the intermediate block 45 and the protruding fitting portion 46. Further, a recess 2E (FIG. 4) is provided in the width direction of the flat cable 2, and the pressing portion 54 is fitted into the recess 2E. Then, the pressing member 42 is fitted in the recess provided in the intermediate block 45 and overlaps the one side of the flat cable 2. At this time, the pressing portion 54 of the case member 5 is inserted into the slit 48 provided in the pressing member 42. Then, the outer peripheral portion of the front end of the pressing portion 54 is bent inward, and the center portion thereof is bent outward. Thereby, when the pressing force is applied to the flat cable 2 from the pressing portion 54 via the pressing member 42, the flat cable 2 can be pressed toward the other surface side.

According to the present embodiment, the first connecting portion 52 of the case member 5 is brought into contact with the first ground connecting portion 31, and the second connecting portion 53 is brought into contact with the ground plane 2D of the flat cable 2, and the ground plane 2D is first When the ground connection portion 31 is connected to the ground, the potential of the ground plane 2D can be referenced. At this time, in the state of being fitted with the counterpart connector 3, the second connection The joint portion 53 is located at a position sandwiching the flat cable 2 and facing the terminal clamp 3B, that is, in the cross-sectional direction of the connectors 1 and 3 which are fitted to each other, in accordance with the terminal clamp 3B, the electrical connection portion 2A of the flat cable 2, and the connection The ground 2D and the second connecting portion 53 are arranged in parallel, and the grounding surface 2D is pressed against the second connecting portion 53 by the pressing force applied to the electrical connecting portion 2A of the flat cable 2 from the terminal jig 3B. Therefore, the contact state between the ground plane 2D and the second connecting portion 53 can be favorably maintained, and the ground connection can be ensured, whereby the signal transmission between the flat cable 2 and the counterpart connector 3 can be stabilized.

Further, according to the present embodiment, by providing the second connecting portion 53 of the case member 5 at a position sandwiching the resin cover portion 46A and facing the second ground connecting portion 32, the second ground connecting portion 32 is provided from the second ground connecting portion 32. The pressing force is applied to the second connecting portion 53 via the resin cover portion 46A, and the second connecting portion 53 can be pressed against the ground contact surface 2D of the flat cable 2 by the pressing force. Therefore, the contact state between the ground plane 2D and the second connecting portion 53 can be maintained more satisfactorily, and the ground connection can be ensured.

Further, according to the present embodiment, when the shell member 5 is insert-molded into the insulator 4, the physical properties between the shell member 5 and the insulator 4 can be improved, and the assembly can be suppressed as compared with the case where the members are assembled individually. The shell member 5 and the insulator 4 are warped and deformed, and the second connecting portion 53 can be prevented from leaving the ground plane 2D of the flat cable 2.

Further, according to the present embodiment, by engaging the engagement piece 55 formed in the case member 5 with the lock portion of the counterpart connector 1, the engagement force from the lock portion can be directly applied to the engagement. The sheet 55 is the shell member 5. Therefore, in the fitting state with the counterpart connector 3, the shell member 5 can be positioned at a predetermined position with respect to the counterpart connector 3, so that the first connecting portion 52 can surely contact the first ground connecting portion 31, but Make sure the ground connection.

According to the present embodiment, the flat cable 2 is pressed toward the other surface side by the pressing portion 42 formed in the case member 5, whereby the connection of the flat cable 2 can be performed. The ground 2D is pressed toward the second connecting portion 53, and the contact state between the ground surface 2D and the second connecting portion 53 can be made better.

According to the present embodiment, the insulator 4 has the configuration of the main body portion 41 and the pressing member 42, and the pressing member 42 presses the flat cable 2 from the one side toward the main portion 41, so that the flat cable 2 can be connected. The ground 2D is pressed toward the second connecting portion 53, and the contact state between the ground surface 2D and the second connecting portion 53 can be made better.

Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the above embodiments. That is, various changes can be made without departing from the gist of the invention.

Further, according to the above embodiment, the case member 5 is embedded in the insulator 4, but the present invention is not limited thereto. The case member 5 and the insulator 4 may be individually designed, and the case member 5 may be attached to the insulator 4.

Further, according to the above embodiment, the engaging piece 55 that is engaged with the locking portion of the counterpart connector 3 is provided on the case member 5, but the present invention is not limited thereto.

An engaging piece 55 may also be provided in the insulator 4.

Further, according to the above embodiment, the pressing portion 54 is provided in the case member 5, but the present invention is not limited thereto. As long as the first connecting portion 52 is provided in the case member 5, the setting of the pressing portion 54 is not essential.

Further, according to the above embodiment, the pressing member 42 is provided, but the present invention is not limited thereto, and the pressing member 42 is not essential.

1‧‧‧Connector

2‧‧‧Flat cable (electrical connection member)

2A‧‧‧Electrical connection

2B‧‧‧Substrate

2C‧‧‧Shield

2D‧‧‧ ground plane

3‧‧‧Partner connector

3A‧‧‧ Shell

3B‧‧‧End hand clamp (electrical connection part)

3C‧‧‧Metal cover (partial ground connection)

4‧‧‧Insulator (holding member)

5‧‧‧Shell components

31‧‧‧First grounding connection

32‧‧‧Second grounding connection

41‧‧‧ Body part (holding member body)

42‧‧‧ Pressing members

46A‧‧‧Resin cover (part of the holding member)

47‧‧‧Clamping protrusion

51‧‧‧Shell body

52‧‧‧First connection

53‧‧‧Second connection

53A‧‧‧ Front End

Claims (6)

A connector is provided on an end of a flat-shaped electrical connection member having an electrical connection portion on one side and a ground contact surface on the other surface, and the electrical connection portion is in contact with a counterpart electrical connection portion of the counterpart connector, Further, the connector for connecting the ground contact surface to the ground connection portion of the counterpart is characterized in that: the holding member is provided with insulation, and the electric connection member is held and fitted to the counterpart connector; And a case member having electrical conductivity and covering the other surface side of the electrical connection member; the case member having a first connection portion disposed opposite to a ground contact surface of the electrical connection member and separated by a predetermined distance And contacting the ground connection portion; and the second connection portion extending from the first connection portion toward the ground plane and abutting the ground surface; and being engaged with the counterpart connector, The second connecting portion is formed at a position that sandwiches the electrical connecting member and faces the counterpart electrical connecting portion. The connector according to claim 1, wherein the second connecting portion of the case member is provided at a position sandwiching one of the holding members and facing the other ground connection portion. The connector of claim 1 or 2, wherein the shell member is insert-molded into the holding member. The connector according to any one of claims 1 to 3, wherein the above-mentioned case member is formed with an engagement piece that is engaged with the lock portion of the counterpart connector. The connector of any one of claims 1 to 4, wherein A pressing portion that presses the electrical connecting member from one side to the other side is formed in the member. The connector according to any one of claims 1 to 5, wherein the holding member is provided with: a holding member main body on the other surface side of the electric connecting member; and a pressing member that connects the electric connecting member Pressing from the one side toward the holding member body.