JP2019003817A - Electrical connector - Google Patents

Abstract

An electrical connector capable of reducing the cost by providing a simple configuration for electrical connection between a conductive shell and a ground member. In the electrical connector 1, the extending portions 14A and 14B of the shell 10 are elastically joined to the spring portion 59 of the back ground plate 58, whereby the shell 10 and the back ground plate 58 are electrically connected. Figured. That is, the shell 10 and the back ground plate 58 are designed to have a simple electrical connection without being welded. As a result, the manufacturing cost of the electrical connector 1 can be reduced, and a relatively inexpensive electrical connector can be obtained. [Selection] Figure 21

Description

  The present invention relates to an electrical connector.

  As one type of electrical connector, an electrical connector including a contact, a cylindrical conductive shell disposed so as to surround the contact, and a conductive ground member that becomes a ground potential is known. For example, Patent Document 1 below discloses an electrical connector in which a shell and a back shell, which is a kind of a ground member, are electrically connected by welding so that a shell surrounding a contact has a ground potential.

JP, 2006-201251, A

  In the above-described conventional electrical connector, since the electrical connection between the shell and the back shell is realized by welding, the price of the electrical connector is increased by the cost related to welding.

  An object of this invention is to provide the electrical connector which can aim at cost reduction by making the electrical connection of an electroconductive shell and a ground member into a simple structure.

  An electrical connector according to one aspect of the present invention includes a connecting portion connected to a mating connector, a body portion positioned behind the connecting portion in the connecting direction of the mating connector, and a connecting direction of the mating connector. A conductive contact that extends along and is at least partially held by the connecting portion and the other portion is held by the main body, and a cylinder that surrounds the connecting portion and is open at both ends extending in the connecting direction with the mating connector An electrical connector including a conductive shell, and a main body portion having a conductive ground member connectable to a ground terminal of a circuit, and the shell extends from one end to the ground member of the main body portion. And an extending portion that elastically joins to the ground member.

  In the electrical connector, the shell extension portion is elastically joined to the ground member, whereby the shell and the ground member are electrically connected. That is, the electrical connection between the shell and the ground member can be simplified without welding. As a result, the manufacturing cost of the electrical connector is reduced, and a relatively inexpensive electrical connector can be obtained.

  In the electrical connector according to another aspect of the present invention, the ground member of the main body portion has a wave-like spring portion, and the extended portion of the shell is accommodated in the concave portion of the spring portion.

  In the electrical connector according to another aspect of the present invention, the main body portion intersects the connecting direction with the mating connector in front of the joint where the ground member and the extending portion are joined in the connecting direction with the mating connector. Extending in the direction to be connected, and having a flange portion that shields the ground member when viewed from the front in the connection direction with the mating connector, and the flange portion can be inserted through the extending portion of the shell in the coupling direction with the mating connector. The extending portion of the shell is joined to the ground member of the main body portion through the through hole of the flange portion.

  The electrical connector according to another aspect of the present invention further includes a plate-like conductive member that extends in the connecting direction with the mating connector and is partially held by the connecting portion, and is provided at least on both sides of the conductive member. A plurality of contacts, one part of which is held by the connecting part and the other part is held by the main body, are arranged in a state of being electrically insulated from the conductive member.

  ADVANTAGE OF THE INVENTION According to this invention, the electrical connector which can aim at cost reduction can be provided by making an electrical connection with an electroconductive shell and a ground member into a simple structure.

It is a perspective view which shows the electrical connector which concerns on one Embodiment of this invention. It is the II-II sectional view taken on the line of the electrical connector of FIG. It is a perspective view which shows the connector main body of the electrical connector of FIG. FIG. 4 is a sectional view taken along line IV-IV of the connector main body of FIG. 3. FIG. 4 is a front view of the connector main body of FIG. FIG. 4 is a perspective view showing an intermediate ground plate in FIG. 3. It is a perspective view which shows the upper side ground plate of FIG. FIG. 4 is a perspective view showing a lower ground plate in FIG. 3. It is a perspective view which shows the back part ground plate of FIG. FIG. 4 is a plan view of the connector main body of FIG. 3. It is a bottom view of the connector main body of FIG. It is the flowchart which showed the procedure which manufactures the connector main body of FIG. It is the perspective view which showed the 1st molded object obtained by 1st insert molding. It is the XIV-XIV sectional view taken on the line of the 1st molded object of FIG. It is the perspective view which showed the 2nd molded object obtained by 2nd insert molding. It is the XVI-XVI sectional view taken on the line of the 2nd molded object of FIG. FIG. 16 is a perspective view showing a state in which a back ground plate is arranged on a molded body set obtained by superposing the first molded body of FIG. 13 and the second molded body of FIG. 15. It is the XVIII-XVIII sectional view taken on the line of the compact set of FIG. It is the perspective view which showed a mode that the shell was attached to the connector main body of FIG. It is the figure which showed fitting with the cylinder part of a shell, and the main-body part of a connector main body. It is the figure which showed joining of the extending part of a shell, and a spring part.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  First, an electrical connector 1 according to this embodiment will be described with reference to FIGS.

  The electrical connector 1 is a receptacle connector that is attached to an electronic device 2 such as a portable device or an information device. As shown in FIG. 2, the electrical connector 1 is accommodated in the accommodation space C of the electronic device 2, and is fixed to the substrate 3 of the electronic device 2 by soldering or the like and electrically connected to the substrate 3. By inserting a plug connector (not shown) as the mating connector into the electrical connector 1, power supply or electrical signal transmission can be performed between the plug connector and the substrate 3. In the present embodiment, the electrical connector 1 is a USB Type-C standard connector.

  The electrical connector 1 and the plug connector are coupled along a predetermined direction. In the following description, as shown in FIG. 3, the coupling direction in which the electrical connector 1 and the plug connector are coupled is referred to as an X direction. In the X direction, the direction toward the plug connector is referred to as the front, and the direction away from the plug connector is referred to as the rear. Further, in each member, a front portion in the X direction is referred to as a front portion, and a rear portion is referred to as a rear portion.

  As shown in FIG. 1, the electrical connector 1 includes a shell 10, a waterproof member 20, and a connector assembly 30.

  Hereinafter, the configuration of the connector assembly 30 will be described with reference to FIGS.

  As illustrated in FIG. 3, the connector assembly 30 includes a plurality of conductive contacts 40, a plurality of conductive ground plates 50, and a resin molded body 60 that integrally couples the contacts 40 and the ground plate 50. Have

  Each of the plurality of contacts 40 is a long member extending in the connecting direction (X direction) between the electrical connector 1 and the plug connector, and is made of a metal material such as Cu. As shown in FIGS. 4 and 5, the plurality of contacts 40 include a plurality of contacts 42 arranged in parallel in a direction orthogonal to the X direction. In the present embodiment, twelve contacts 42 are juxtaposed in a direction orthogonal to the X direction. Hereinafter, for convenience of explanation, the parallel direction in which the contacts 42 are parallel is referred to as a Y direction. As shown in FIG. 4, each contact 42 has a bent portion 42 a whose rear portion in the X direction is bent toward the substrate 3, and the main surface 3 a of the substrate 3 from the lower end portion of the bent portion 42 a in the surface direction. And a board connection portion 42b extending along the board connection portion 42b. The board connection portion 42b is electrically connected to a signal terminal (not shown) disposed on the main surface 3a of the board 3 by soldering or the like.

  As shown in FIGS. 4 and 5, the plurality of contacts 40 are separated from each other by a predetermined distance in the Z direction orthogonal to the X direction and the Y direction in addition to the 12 contacts 42, and overlap the contacts 42. Twelve contacts 44 extending in the X direction are included. The contacts 44 are arranged in parallel in the Y direction. Hereinafter, for convenience of explanation, a direction orthogonal to the X direction and the Y direction is referred to as a Z direction. In the Z direction, the side far from the substrate 3 is referred to as the upper side, and the side closer to the substrate 3 is referred to as the lower side with respect to the main surface 3a of the substrate 3. For example, in the Z direction, the contact 42 far from the substrate 3 is referred to as an upper contact, and the contact 44 closer to the substrate 3 is referred to as a lower contact. As shown in FIG. 5, the upper contact 42 (second contact) and the lower contact 44 (first contact) have a front portion in the X direction in the Z direction (the thickness direction of an intermediate ground plate 52 described later). ). Similarly to the upper contact 42, the lower contact 44 also has a bent portion 44a whose rear portion in the X direction is bent toward the substrate 3, and the main surface 3a of the substrate 3 from the lower end portion of the bent portion 44a along the surface direction. And the board connection portion 44b is electrically connected to a signal terminal (not shown) disposed on the main surface 3a of the board 3 by solder connection or the like.

  As shown in FIG. 4, the plurality of ground plates 50 include an intermediate ground plate (plate-like conductive member) 52, an upper ground plate 54, a lower ground plate 56, and a back ground plate, all of which are at ground potential. 58.

  As shown in FIG. 6, the intermediate ground plate 52 includes a plate-like portion 52 a disposed in front of the X direction, two arm portions 52 b extending rearward from the plate-like portion 52 a, and a rear end of the arm portion 52 b. And a board connecting portion 52c that hangs down from the board toward the board 3. The plate-like portion 52 a of the intermediate ground plate 52 is a portion extending in parallel with the upper contact 42 and the lower contact 44 between the upper contact 42 and the lower contact 44. The plate-like portion 52a is provided with a plurality of through holes 53 in a portion where the upper contact 42 and the lower contact 44 overlap in the Z direction. Each through-hole 53 is used for holding each of the lower contacts 44 by a mold when the intermediate ground plate 52 and the lower contact 44 are arranged in the mold in the first insert molding described later. Substrate connecting portion 52c of intermediate ground plate 52 extends to a position where the lower end reaches a ground terminal arranged on main surface 3a of substrate 3.

  As shown in FIG. 7, the upper ground plate 54 includes a plate-like portion 54a disposed in front of the X direction and five bridge portions 54b extending rearward from the plate-like portion 54a at a predetermined interval in the Y direction. And a belt-like portion 54c extending in the Y direction so as to be connected to all of the five bridging portions 54b, and a joint portion extending backward from both ends in the Y direction in the belt-like portion 54c and joined to a back ground plate 58 described later. 54d. The plate-like portion 54 a of the upper ground plate 54 is a portion that extends parallel to the intermediate ground plate 52 with the upper contact 42 interposed between the upper ground plate 54 and the intermediate ground plate 52.

  As shown in FIG. 8, the lower ground plate 56 includes a plate-like portion 56a disposed in front of the X direction, and five bridging portions extending rearward from the plate-like portion 56a at predetermined intervals in the Y direction. 56b, a belt-like portion 56c extending in the Y direction so as to be connected to all of the five bridging portions 56b, and a substrate connecting portion 56d that hangs down toward the substrate 3 from both ends of the belt-like portion 56c in the Y direction. The plate-like portion 56 a of the lower ground plate 56 is a portion that extends in parallel to the intermediate ground plate 52 with the lower contact 44 interposed between the lower ground plate 56 and the intermediate ground plate 52.

  As shown in FIGS. 4 and 9, the back ground plate 58 extends in parallel to the upper ground plate 54 behind the upper ground plate 54 and is joined to the joint 54 d of the upper ground plate 54. And a plate-like hanging portion 58b that hangs down from the rear end of the plate-like portion 58a toward the substrate 3, and a lower end of the hanging portion 58b that extends to a position that reaches a ground terminal (not shown) disposed on the main surface 3a of the substrate 3. And three board connection portions 58c. The back ground plate 58 covers the bent portion 42a of the upper contact 42 and the bent portion 44a of the lower contact 44, and the upper contact 42 and the lower contact 44 are affected by external electromagnetic waves by the back ground plate 58. The situation and the situation where electromagnetic noise generated in the upper contact 42 and the lower contact 44 affects electronic devices around the electrical connector 1 can be suppressed.

  The back portion ground plate 58 is provided with spring portions 59 connected to extending portions 14A and 14B of the shell 10 to be described later at both ends in the Y direction of the plate-like portion 58a.

  The resin molded body 60 is made of an insulating resin, and holds and fixes each of the plurality of contacts 40 and the plurality of ground plates 50 at predetermined positions as shown in FIG.

  The resin molded body 60 includes a connecting portion 70 and a main body portion 80. The connection part 70 is a part connected with the other party connector, and is located ahead of the resin molding 60 with respect to the connection direction. The main body portion 80 is a portion that is fixed to the substrate 3 of the electronic device 2 and is located behind the connecting portion 70 in the connecting direction with the mating connector.

  The connection part 70 holds the front part (part) of each contact 40 in the connection direction. Specifically, the connecting portion 70 is on one surface (surface) of the plate-like portion 52a of the intermediate ground plate 52 so that the upper contact 42 is separated from the plate-like portion 52a of the intermediate ground plate 52 by a predetermined distance. The upper contact 42 is held on the upper side. Further, the connecting portion 70 is lowered on the other surface (back surface) of the plate-like portion 52a of the intermediate ground plate 52 so that the lower contact 44 is separated from the plate-like portion 52a of the intermediate ground plate 52 by a predetermined distance. The side contact 44 is held.

  The connecting portion 70 holds the plate-like portion 54 a of the upper ground plate 54 with the upper contact 42 interposed on one surface of the plate-like portion 52 a of the intermediate ground plate 52. Similarly, the connecting portion 70 holds the plate-like portion 56 a of the lower ground plate 56 with the lower contact 44 interposed on the other surface of the plate-like portion 52 a of the intermediate ground plate 52. That is, on the front and back sides of the intermediate ground plate 52 (plate-like conductive member), a plurality of contacts 40 (upper contacts 42, lower contacts) in which at least a part is held by the connecting part 70 and the other part is held by the main body part 80. The side contacts 44) are arranged in a state of being electrically insulated from the intermediate ground plate 52.

  The main body 80 holds the rear portions (other portions) of the contacts 40 and the ground plates 50 in the X direction. As shown in FIGS. 4 and 10, the main body 80 has an opening 82 that penetrates in the Z direction. The cross-sectional shape of the opening 82 is a rectangular shape extending in the Y direction. A part of the rear part of each contact 40 and a part of each ground plate 50 are exposed in the opening 82. That is, with respect to the upper contact 42 and the lower contact 44, a part of each rear portion is exposed from the opening 82 as exposed portions 42c and 44c. Regarding the intermediate ground plate 52, a part of the two arm portions 52 b is exposed from the opening 82. With respect to the upper ground plate 54 and the lower ground plate 56, a part of each bridge portion 54 b and a part of each bridge portion 56 b are exposed from the opening 82.

  As shown in FIGS. 3 and 5, the main body portion 80 has a pair of flange portions 84 </ b> A and 84 </ b> B arranged at positions where the opening portion 82 is sandwiched from the Y direction. Each flange 84A, 84B extends away from the opening 82 along the Y direction. Each of the flange portions 84A and 84B is provided with a through hole 84a through which extended portions 14A and 14B of the shell 10 described later are inserted.

  Next, a procedure for manufacturing the connector assembly 30 will be described with reference to FIGS.

  When manufacturing the connector assembly 30, first, as the first insert molding, the intermediate ground plate 52, the lower contact 44, and the lower ground plate 56 are arranged at predetermined positions in a predetermined mold, Each member is integrated using one resin 62 (step S1 in FIG. 12). A first molded body 32 as shown in FIG. 13 is obtained by the first insert molding. In the first molded body 32, the lower contact 44 and the lower ground plate 56 are held and fixed on the other surface of the intermediate ground plate 52 via the first resin 62.

  As shown in FIG. 14, the first resin 62 is formed between the intermediate ground plate 52 and the lower contact 44 and between the lower contact 44 and the lower ground plate 56. The first resin 62 is a portion exposed at the above-described opening 82, which is the exposed portion 44 c of the lower contact 44, a part of the arm portion 52 b of the intermediate ground plate 52, and each bridge portion 56 b of the lower ground plate 56. It is not formed in a part of.

  In the first insert molding, a part of the mold is inserted from above into the through hole 53 provided in the intermediate ground plate 52, and the lower contact 44 and the lower ground plate 56 are inserted by a part of the mold. By holding this, a situation where the lower contact 44 and the lower ground plate 56 are bent toward the intermediate ground plate during insert molding is suppressed.

  After the first insert molding, as the second insert molding, the upper contact 42 and the upper ground plate 54 are arranged at predetermined positions in a predetermined mold, and the respective members are integrated using the second resin 64. (Step S2 in FIG. 12). A second molded body 34 as shown in FIG. 15 is obtained by the second insert molding. As shown in FIG. 16, in the second molded body 34, the second resin 64 is formed between the upper contact 42 and the upper ground plate 54 and below the upper contact 42. The second resin 64 is not formed on a part of the exposed portion 42 c of the upper contact 42 and a part of each bridging portion 54 b of the upper ground plate 54, which is a portion exposed at the opening 82 described above.

  After the second insert molding, as shown in FIGS. 17 and 18, a molded body set 36 in which the second molded body 34 is arranged on the first molded body 32 is formed. Thereby, the upper contact 42 and the upper ground plate 54 are disposed on one surface of the intermediate ground plate 52 via the second resin 64. Then, the molded body set 36 and the back ground plate 58 are arranged at predetermined positions in a predetermined mold, and third insert molding using the third resin 66 is performed (step S3 in FIG. 12). As a result, the connector assembly 30 described above is obtained.

  That is, the resin molded body 60 of the connector assembly 30 includes the first resin 62, the second resin 64, and the third resin 66 described above.

  As shown in FIG. 19, the shell 10 has a cylindrical shape with both ends open, and is made of a conductive metal material. The shell 10 has a cylindrical portion 12 and two extending portions 14A and 14B.

  The cylindrical portion 12 has a flat shape having an oval cross section and extends along the X direction. The cylindrical portion 12 covers the entire connecting portion 70 of the connector assembly 30 and the rear end portion is fitted to the main body portion 80.

  The fitting between the cylinder portion 12 and the main body portion 80 will be described with reference to FIG.

  As shown in FIG. 20, a portion (hereinafter referred to as a front main body portion) 86 located on the front side of the opening portion 82 in the main body portion 80 has the same outer diameter as the inner diameter of the cylindrical portion 12. Although it is designed to be slightly smaller than the dimension or the inner diameter of the cylindrical portion, the outer dimension gradually increases from the front end toward the rear in the X direction. As shown in the cross-sectional view of FIG. 20, the front main body portion 86 to be joined to the rear end portion of the cylinder portion 12 has an entire circumferential surface including the upper end surface 86 a and the lower end surface 86 b with respect to an axis parallel to the X direction. Is inclined by an angle θ.

  Therefore, after the cylindrical portion 12 is disposed so as to contact the outer periphery of the front main body portion 86, when the cylindrical portion 12 is press-fitted into the front main body portion 86 along the X direction, the inside of the cylindrical portion 12 from the front main body portion 86. The stress and frictional force on the peripheral surface 12a are increased, and the cylindrical portion 12 is firmly fitted to the front main body portion 86. As shown in FIGS. 5, 10, 11, and 19, the main body portion 80 is provided with four contact portions 84 b that contact the rear end portion of the cylindrical portion 12. The position where the abutting portion 84b and the rear end portion of the cylindrical portion 12 abut is the position of the rear end of the front main body portion 86 (or a position ahead thereof), and the cylindrical portion is press-fitted rearward of the position. Not. That is, a situation in which the cylindrical portion 12 blocks the opening 82 of the main body portion 80 by the contact portion 84b is avoided.

  The extending portions 14 </ b> A and 14 </ b> B of the shell 10 extend from one end of the shell 10 toward the main body portion 80. Specifically, the extending portions 14A and 14B extend from the both end portions in the Y direction at the rear end portion of the cylindrical portion 12 toward the main body portion 80 along the X direction.

  Each of the extending portions 14A and 14B has an elongated shape with an equal width, and is inserted through the through holes 84a provided in the both flange portions 84A and 84B of the main body portion 80, respectively. Each flange portion 84A, 84B is located in front of the spring portions 59A, 59B in the X direction, and shields the spring portions 59A, 59B when viewed from the front in the X direction. As shown in FIG. 21, the distal end portion 14a of the extending portion 14A reaches a spring portion 59A provided on the back ground plate 58 held by the main body portion 80 through the through hole 84a of the flange portion 84A. . And the front-end | tip part 14a of the extending | stretching part 14A is elastically joined with the spring part 59A. Specifically, the distal end portion 14a of the extending portion 14A is accommodated in the U-shaped recess 59a of the spring portion 59A and is attached in the Y direction between the base portion 59b and the biasing portion 59c of the spring portion 59A. It is held and pinched. The distal end portion 14a of the extending portion 14A is in contact with the spring portion 59A, so that the shell 10 becomes a ground potential. Although illustration is omitted, the distal end portion 14b of the extending portion 14B also reaches the spring portion 59B through the through hole 84a of the flange portion 84B, similarly to the distal end portion 14a of the extending portion 14A described above, and the spring portion 59B. And elastically joined. Moreover, since the joining aspect of the front-end | tip part 14b of the extending | stretching part 14B and the spring part 59B is the same as the joining aspect of the front-end | tip part 14a of the extending | stretching part 14A, and the spring part 59A, the description is abbreviate | omitted. In the present embodiment, the extending portions 14A and 14B are not permanently coupled to the spring portions 59A and 59B or the back ground plate 58, but may be coupled by welding or the like, for example.

  The conductive shell 10 described above suppresses the situation where the connector assembly 30 is affected by external electromagnetic waves and the situation where electromagnetic noise generated in the connector assembly 30 affects electronic devices around the electrical connector 1. obtain.

  As shown in FIG. 2, the waterproof member 20 includes an internal waterproof portion 22 and an external waterproof portion 24 that are integrally formed. The waterproof member 20 is formed so that the connector assembly 30 to which the shell 10 is attached is placed in a predetermined mold, the opening 82 of the main body 80 is filled with an insulating resin, and the outer periphery of the main body 80 is enclosed. It is obtained by doing. The resin used for the waterproof member 20 preferably has a certain degree of elasticity, and is silicone rubber as an example.

  The internal waterproof part 22 is a part filled in the opening 82 of the main body part 80. The internal waterproof portion 22 covers a portion of each contact 40 and each ground plate 50 that is exposed from the opening 82 of the main body portion 80. Specifically, as shown in FIGS. 2 and 4, the internal waterproof portion 22 includes exposed portions 42 c and 44 c of the upper contact 42 and the lower contact 44, a part of the arm portion 52 b of the intermediate ground plate 52, and A part of each bridging portion 54b, 56b of the upper ground plate 54 and the lower ground plate 56 is covered. Thus, since the internal waterproof part 22 covers all of the contact 40 and the ground plate 50 held by both the connecting part 70 and the main body part 80 in the opening part 82, moisture is in contact 40 and the ground plate 50. The situation from the connecting portion 70 to the rear end of the main body portion 80 is suppressed.

  As shown in FIG. 1, the external waterproof portion 24 is an annular portion that surrounds the entire circumference of the main body portion 80 that is perpendicular to the X direction. As shown in FIG. 2, the outer waterproof part 24 has a substantially triangular cross section that tapers away from the main body part 80 in the Z direction. The outer waterproof part 24 is designed to have a size and shape that allows the top 24 a to contact the inner wall 4 of the accommodation space C of the electronic device 2 over the entire circumference.

  The external waterproof part 24 has a thin film part 24 b that thinly covers the surface of the rear end part of the cylindrical part 12 of the shell 10. The thin film portion 24b is provided integrally with the external waterproof portion 24, and covers the interface B between the rear end surface of the cylindrical portion 12 and the waterproof member 20 over the entire circumference.

  As described above, the electrical connector 1 includes the waterproof member 20 having the internal waterproof part 22 and the external waterproof part 24 in the main body part 80, and the internal waterproof part 22 and the external waterproof part 24 are integrated. Yes. Therefore, the inner waterproof portion 22 covers the exposed portions 42 c and 44 c of the upper contact 42 and the lower contact 44 in the opening 82 of the main body portion 80, and the main body portion 80 along the upper contact 42 and the lower contact 44. This prevents water from entering the back of the car. Further, the outer waterproof part 24 surrounds the entire periphery of the main body part 80 to prevent water from entering between the electrical connector 1 and the inner wall 4 of the accommodation space C of the electronic device 2. Since the internal waterproof part 22 and the external waterproof part 24 are integrated with each other, in the electrical connector 1, both internal waterproofing and external waterproofing can be realized with a simple configuration using only a single waterproofing member 20. Can do.

  Therefore, the assembly work is simplified as compared with the case of combining the internal waterproofing member and the external waterproofing member in order to realize both the internal waterproofing and the external waterproofing. Efficiency can also be improved.

  Note that the waterproof member 20 does not necessarily have to be formed of a single material as long as the internal waterproof portion 22 and the external waterproof portion 24 are integrated with each other, and a configuration using a plurality of materials (for example, two colors). Molding).

  Further, the electrical connector 1 described above does not necessarily include both the upper contact 42 and the lower contact 44, and may be configured to include either one. In the electrical connector 1, the number of contacts constituting the upper contact 42 and the lower contact 44 can be appropriately increased or decreased. Further, it is not always necessary to provide any of the ground plates 50. For example, a configuration excluding the intermediate ground plate 52 can be employed. Further, the electrical connector 1 may be configured without the shell 10.

  In the electrical connector 1, the front side body 86 to be joined to the rear end portion of the cylindrical portion 12 of the shell 10 is enlarged so that the outer dimension increases from the front to the rear in the connecting direction (X direction). The body portion 86 is inclined, and the rear end portion of the shell 10 is fitted to the front end portion (front body portion 86) of the body portion 80, so that the cylindrical portion 12 is firmly attached to the front body portion 86 of the body portion 80. It is mated.

  Furthermore, the thin film part 24b of the external waterproof part 24 covers the interface B between the rear end surface of the cylindrical part 12 and the waterproof member 20 over the entire circumference, so that water enters the inside of the electrical connector 1 from the interface B. Is significantly suppressed. In addition, the water infiltration path reaching the interface B is extended by the width of the thin film portion 24b (the length in the X direction), thereby making it more difficult for water to enter the electrical connector 1.

  In the electrical connector 1, the connecting portion 70 includes a first resin 62 (first resin portion) that holds the lower contact 44 with respect to the intermediate ground plate 52, and an upper contact with respect to the intermediate ground plate 52. The second resin 64 (second resin portion) that is separate from the first resin 62 and holds the 42 is provided. Further, the apparatus further includes a third resin 66 (third resin portion) that covers the first resin 62 and the second resin 64 and is separate from the first resin 62 and the second resin 64. ing.

  As described above, the first resin 62 is formed by the first insert molding (step S1 in FIG. 12), and the second resin 64 is formed by the second insert molding (step S2 in FIG. 12). .

  The bending of the lower contact 44 can be suppressed by using a predetermined mold during the first insert molding. Specifically, by using a mold having a portion that can be inserted into the through-hole 53 provided in the intermediate ground plate 52 and performing the insert molding in a state where the lower contact 44 is held by the mold, the lower contact The situation where 44 is bent toward the intermediate ground plate 52 is suppressed. Also in the second insert molding, the deflection of the upper contact 42 can be suppressed by using a predetermined mold. In the second insert molding, since the intermediate ground plate 52 is not integrated, the upper contact 42 is hardly bent.

  Thus, the mold used for each molding process is divided into the first insert molding (the molding process of the first molded body 32) and the second insert molding (the molding process of the second molded body 34). The arrangement and shape of the upper contact 42 and the lower contact 44 can be suppressed by appropriately changing the arrangement and shape of the upper contact 42 and the lower contact 44. Therefore, high relative positional accuracy of the upper contact 42 and the lower contact 44 with respect to the intermediate ground plate 52 can be realized.

  In the through hole 53 provided in the plate-like portion 52a of the intermediate ground plate 52, a part of the mold is inserted from above during the first insert molding so that the lower contact 44 does not bend upward. Can be held. In the case where the intermediate ground plate 52 is integrated in the second insert molding without integrating the intermediate ground plate 52 in the first insert molding, the gold is inserted into the through hole 53 during the second insert molding. A part of the mold is inserted from below, and the upper contact 42 can be held so as not to bend downward.

  The first resin 62, the second resin 64, and the third resin 66 may be the same type of resin material or different types of resin materials.

  Furthermore, in the electrical connector 1, the shell 10 includes the cylindrical portion 12 and the extending portions 14 </ b> A and 14 </ b> B, and the extending portions 14 </ b> A and 14 </ b> B extend to the spring portion 59 (ground member) of the back ground plate 58 of the main body portion 80. And elastically connected to the spring part 59.

  The extending portions 14A and 14B of the shell 10 are elastically joined to the spring portion 59 of the back ground plate 58, so that the shell 10 and the back ground plate 58 are electrically connected. That is, the shell 10 and the back ground plate 58 are electrically connected with a simple configuration without welding. As a result, the electrical connector 1 can be made relatively inexpensive. Moreover, in the electrical connector according to the prior art, since the electrical connection between the shell and the back shell (back ground plate) is realized by welding, the electrical connection before welding is not sufficient, and it is the first time after welding. Electrical connection is achieved. Therefore, in the electrical connector according to the prior art, when there is a problem in welding between the shell and the back shell, there may occur a situation in which sufficient electrical connection cannot be achieved. The situation in which the electrical connection becomes insufficient due to the above-described problem cannot occur, and the shell 10 and the back ground plate 58 can be electrically and reliably connected.

  In addition, in the electrical connector 1, the shell 10 and the back ground plate 58 are not welded, so that a facility for welding is unnecessary, and the manufacturing cost can be reduced. Further, it is possible to reduce the labor and time of the welding work and to improve the manufacturing efficiency.

  DESCRIPTION OF SYMBOLS 1 ... Electrical connector, 2 ... Electronic device, 3 ... Board | substrate, 4 ... Inner wall, 10 ... Shell, 12 ... Tube part, 14A, 14B ... Extension part, 20 ... Waterproof member, 22 ... Internal waterproof part, 24 ... External waterproof part 30 ... Connector assembly, 32 ... First molded body, 34 ... Second molded body, 36 ... Molded body set, 40, 42, 44 ... Contact, 42c, 44c ... Exposed part, 50, 52, 54, 56, 58 ... ground plate, 59, 59A, 59B ... spring part, 60 ... resin molded body, 62 ... first resin, 64 ... second resin, 66 ... third resin, 70 ... connecting part, 80 ... A main body part, 82 ... an opening, 84A, 84B ... a collar part, 84a ... a through-hole, C ... an accommodation space.

Claims (4)

A connecting portion connected to the mating connector;
A main body located behind the connecting part in the connecting direction with the mating connector;
A conductive contact extending along a connecting direction with the mating connector, at least a portion of which is held by the connecting portion, and another portion of which is held by the body portion;
An electrical connector comprising a cylindrical conductive shell that surrounds the connecting portion and that is open at both ends extending in a connecting direction with the mating connector,
The main body has a conductive ground member connectable to a ground terminal of a circuit,
The electrical connector, wherein the shell has an extending portion that extends from one end to the ground member of the main body and elastically joins to the ground member.   2. The electrical connector according to claim 1, wherein the ground member of the main body has a wave-like spring portion, and the extending portion of the shell is accommodated in a recess of the spring portion. The main body extends forward in a direction intersecting the connecting direction with the mating connector, ahead of the joint location where the ground member and the extending portion are joined with respect to the connecting direction with the mating connector, Having a flange that shields the ground member when viewed from the front in the connecting direction with the mating connector;
The flange has a through-hole extending along the connecting direction with the mating connector, through which the extending portion of the shell can be inserted.
The electrical connector according to claim 1, wherein the extending portion of the shell is joined to the ground member of the main body portion through the through hole of the flange portion. A plate-like conductive member that extends along the direction of connection with the mating connector and that is partially held by the connection portion,
A plurality of the contacts in which at least a part is held by the connecting part and the other part is held by the main body part are arranged on both the front and back sides of the conductive member in a state of being electrically insulated from the conductive member. The electrical connector according to claim 1, wherein the electrical connector is provided.

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