Electrical connector
10741974 ยท 2020-08-11
Assignee
Inventors
Cpc classification
H01R13/6583
ELECTRICITY
International classification
H01R13/6583
ELECTRICITY
Abstract
A housing holds a contact. A shield member is held in the housing and blocks electromagnetic waves. The shield member has a tubular shape, and the contact is arranged therein. The housing has an outer housing portion that is arranged outside of the shield member, and an inner housing portion that is arranged inside the shield member. The housing also has a joining portion that integrally joins the outer housing portion and the inner housing portion in an end portion on one side in a direction that is parallel to the direction of mating with the partner connector.
Claims
1. An electrical connector for connection to a partner connector by mating, the electrical connector comprising: a contact; a housing configured to hold the contact; and a shield member configured to be held in the housing and block electromagnetic waves, wherein the shield member has, in substantially its entirety, a tubular shape, and the contact is arranged inside the shield member, and the housing has an outer housing portion arranged outside of the shield member, an inner housing portion arranged inside the shield member, and a joining portion that integrally joins the outer housing portion and the inner housing portion in an end portion on one side in a direction parallel to a direction of mating with the partner connector, wherein the shield member has a rectangular tubular shape formed by four side walls, and wherein three of the four side walls each have a contacting portion configured to come into contact with a partner shield member that blocks electromagnetic waves in the partner connector.
2. The electrical connector according to claim 1, wherein the joining portion is provided in an end portion of the housing on a side that is to be connected to the partner connector by mating.
3. The electrical connector according to claim 2, wherein the housing is provided such that an end portion of the housing that is to be connected to the partner connector by mating covers at least part of an end portion of the shield member.
4. The electrical connector according to claim 3, wherein the shield member is configured to enable a partner shield member that blocks electromagnetic waves in the partner connector to be inserted into the shield member, and has a cantilevered elastic contacting portion configured to come into contact with the partner shield member.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE INVENTION
(10) Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Note that the present invention can be broadly applied as an electrical connector in various applications, such as an electrical connector for high frequency data transmission.
(11) Overview of Electrical Connector
(12)
(13) Note that in
(14) The electrical connector 1 shown in
(15) The electrical connector 1 is connected to the partner connector 100 by mating. The electrical connector 1 includes a contact 4, a housing 3 that holds the contact 4, and a shield member 2 that is held in the housing 3 and blocks electromagnetic waves. Also, the electrical connector 1 is fixed to the substrate via tabs 5 that are arranged on the right side and the left side of the housing 3.
(16) The partner connector 100, which is connected to the electrical connector 1 by mating, has a partner shield member 102, a partner housing 103, and a partner contact. Note that the partner contact does not appear in the drawings. The partner shield member 102 is constituted as a conductive member that is made of a metal, and is provided in order to block electromagnetic waves arriving from the outside. The partner housing 103 is formed from an insulating resin material, and has the partner shield member 102 provided on one end side. The partner housing 103 is configured to receive connection of the electrical cable 101 on the other end side. The partner contact is provided inside the partner shield member 102, and is configured so as to be connected to the contact 4 of the electrical connector 1 by being mated thereto. The partner shield member 102 has an engaging protrusion portion 102a for engagement with the shield member 2, wall surface portions 102b for being pressed against and coming into contact with elastic contacting portions 21 provided in the shield member 2 when the connectors are connected, and protection portions 102c for protecting the leading end. Note that the protection portions 102c are made of an insulating resin material.
(17) Shield Member
(18)
(19) The shield member 2 shown in
(20) The shield member 2 also has cantilevered elastic contacting portions 21 for coming into contact with the partner shield member 102. Furthermore, the lower side of the shield member 2 is provided with substrate fixing portions 22 for fixing the shield member 2 to the substrate, and substrate ground portions 23 for grounding the shield member 2 to the substrate.
(21) The shield member 2 is provided with a first side wall 20a, a second side wall 20b, a third side wall 20c, and a fourth side wall 20d as the side walls 20. These four side walls 20 of the shield member 2, namely the first side wall 20a, the second side wall 20b, the third side wall 20c, and the fourth side wall 20d, are arranged in this order in the circumferential direction and are continuous and integrated with each other. The first side wall 20a is provided on the front side of the shield member 2. The second side wall 20b is provided on the left side of the shield member 2. The third side wall 20c is provided on the rear side of the shield member 2. The fourth side wall 20d is provided on the right side of the shield member 2.
(22) Also, in a portion of the shield member 2 located on the upper side, a cutout portion 20e, which is formed by cutting out portions of the side walls 20, is formed in the rear side portion of the shield member 2. An engaging hole portion 20f for engagement with the engaging protrusion portion 102a of the partner shield member 102 is provided in the upper side portion of the first side wall 20a of the shield member 2. Three of the four side walls 20, namely the first side wall 20a, the second side wall 20b, and the fourth side wall 20d each have a contacting portion 21 for coming into contact with the partner shield member 102 that is for blocking electromagnetic waves in the partner connector 100. Note that in the present embodiment, the elastic contacting portions 21 constitute the contacting portions 21 as well, and hereinafter the elastic contacting portions 21 are also referred to as the contacting portions 21.
(23) The cutout portion 20e is provided so as to circumvent a joining portion 32 that integrally joins an outer housing portion 30 and an inner housing portion 31 that will be described later. The cutout portion 20e is provided in a portion that is on the upper side and the rear side of the shield member 2. Specifically, the cutout portion 20e is formed by cutting out portions on the upper side of the second side wall 20b, the third side wall 20c, and the fourth side wall 20d of the shield member 2. Note that it is sufficient that the cutout portion 20e is provided on the upper side so as to enable joining of the outer housing portion 30 and the inner housing portion 31, and may also be provided on sides other than the rear side of the shield member 2.
(24) The engaging hole portion 20f is provided in the upper side of the first side wall 20a, and is configured to be engaged with the engaging protrusion portion 102a provided on the partner shield member 102 when the connectors are connected.
(25) The contacting portion 21 is provided in three of the four side walls 20, namely the first side wall 20a, the second side wall 20b, and the fourth side wall 20d. For this reason, the shield member 2 supports the partner shield member 102 using the contacting portions 21 in these three side walls (20a, 20b, and 20d). Accordingly, the partner shield member 102 is supported by the shield member from three directions, namely from the front side, the right side, and the left side, and is stably grounded.
(26) The elastic contacting portions 21, which also constitute the contacting portions 21 in the present embodiment, are formed by forming cantilevered portions by cutting the side walls 20 and bending the cantilevered portions inward.
(27) The substrate fixing portions 22 are provided on the lower sides of the second side wall 20b, the third side wall 20c, and the fourth side wall 20d, and extend downward from these side walls 20b, 20c, and 20d. The substrate fixing portions 22 are electrically and mechanically connected to the substrate by soldering. The electrical connector 1 is fixed to the substrate due to the substrate fixing portions 22 being connected to the substrate.
(28) The substrate ground portions 23 are provided on the lower side of the first side wall 20a, and are configured to extend forward from the first side wall 20a and extend substantially parallel with the substrate. The substrate ground portions 23 are configured to be electrically connected to the substrate by soldering.
(29) Housing
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(31) The housing 3 shown in
(32) The outer housing portion 30 and the inner housing portion 31 of the present embodiment are joined via the joining portion 32, and therefore the housing 3 is formed by one component. Accordingly, the number of components can be reduced in the electrical connector 1. Also, the housing 3 has tab housing portions 33 for housing the approximately flat plate-shaped tabs 5 on the right side and the left side. The housing 3 is fixed to the substrate via the tabs 5 that are housed in the tab housing portions 33.
(33) The outer housing portion 30 shown in
(34) The first outer housing portion 30a is provided in the front side portion of the outer housing portion 30. The second outer housing portion 30b is provided in the left side portion of the outer housing portion 30. The third outer housing portion 30c is provided in the rear side portion of the outer housing portion 30. The fourth outer housing portion 30d is provided in the right side portion of the outer housing portion 30.
(35) The first outer housing portion 30a, the second outer housing portion 30b, and the fourth outer housing portion 30d shown in
(36) The recession portion 30e is provided in order to prevent the metallic engaging projection 102a of the partner shield member 102 from coming to contact with and damaging the inward surface of the housing 3 when the partner connector 100 is inserted into the electrical connector 1. The notch portion 30f is provided in order to prevent the engaging projection 102a of the partner shield member 102 from coming to contact with and damaging the inward surface of the housing 3 when the partner connector 100 is inserted into the electrical connector 1.
(37) The inner housing portion 31 shown in
(38) The plate-shaped main body portion 31a is adjacent to the third side wall 20c of the shield member 2 on the front side of the third side wall 20c. Also, the plate-shaped main body portion 31a is adjacent to the rear side of the partner shield member 102 when the connectors are connected. Specifically, the plate-shaped main body portion 31a is sandwiched between the shield member 2 and the partner shield member 102 when the connectors are connected.
(39) The plate-shaped main body portion 31a of the present embodiment is provided on only the rear side of the housing 3, and not on the front, left, and right sides thereof. For this reason, when the partner shield member 102 is inserted into the housing 3, only the rear side of the partner shield member 102 comes into contact with the inner housing portion 31. Note that besides the rear side, the inner housing portion 31 may be provided at one or more of the front side, the left side, and the right side. Also, a key groove for guiding mating with the partner shield member 102 may be provided in the plate-shaped main body portion 31a.
(40) The contact holding portion 31b is provided in a manner of projecting inward at the lower side of the plate-shaped main body portion 31a. The contact holding portion 31b holds the contact 4 such that the axis of the contact 4 and the axis of the shield member 2 extend along the same line inside the shield member 2. Note that it is sufficient that the contact holding portion 31b can hold the contact 4 so as to enable mating with the partner contact, and the contact holding portion 31b may be arranged at a location other than the lower side, such as the upper side or the central portion of the plate-shaped main body portion 31a.
(41) The joining portion 32 shown in
(42) In the housing 3 of the present embodiment, the joining portion 32 is provided on the upper side, and therefore the shield member 2 is inserted from below when assembling the electrical connector 1. Also, the housing 3 is provided such that the end portion connected to the partner connector 100 by mating covers at least part of the end portion of the shield member 2. More specifically, the housing 3 is formed such that the portion thereof that is on the side that is connected to the partner connector 100 by mating and that is inward of the outer circumferential edge portion covers the upper end of the shield member 2.
(43) According to the above configuration, the upper end of the first side wall 20a of the shield member 2 is covered by the first outer housing portion 30a. Similarly, the upper end of the second side wall 20b of the shield member 2 is covered by the second outer housing portion 30b, and the fourth side wall 20d is covered by the fourth outer housing portion 30d. Also, the upper end of the third side wall 20c of the shield member 2 is covered by the joining portion 32 of the housing 3.
(44) The inward surface of the first side wall 20a of the shield member 2 is coplanar with a portion of the first outer housing portion 30a that faces inward and is located above the first side wall 20a. For this reason, when the partner shield member 102 is inserted, the partner shield member 102 abuts against the elastic contacting portions 21 of the shield member 2 and causes the elastic contacting portions 21 to undergo outward elastic deformation. The elastically deformed elastic contacting portions 21 support the partner connector 100 by pressing the wall surface portions 102b of the partner shield member 102 when the connectors are connected. Also, due to the partner shield member 102 being covered by the protection portion 102c, the housing 3 is not likely to become damaged.
(45) Contact
(46) The contact 4 shown in
(47) The contact main body portion 40 of the present embodiment is shaped as a tapered flat plate, and is press-fitted into the contact holding portion 31b of the inner housing portion 31. The contact portion 41 is provided on the upper side of the contact main body portion 40, and is arranged such that the central axis is coaxial with the central axis of the shield member 2.
(48) The curved portion 42 curves forward to the front side of the housing 3 at the lower end of the contact main body portion 40. Specifically, the curved portion 42 curves from the lower end of the contact main body portion 40 toward the side of the housing 3 that is opposite to the side on which the joining portion 32 is provided. The extending portion 43 extends forward from the curved portion 42 along a path below the first side wall 20a. The substrate connection portion 44 extends forward from the extending portion 43 and is substantially parallel with the substrate. The substrate connection portion 44 is provided as a portion for being electrically and mechanically connected to the substrate by soldering. Note that the contact 4 of the present embodiment is configured by a flat plate-shaped pin, but may have another shape, such as having a tubular shape.
(49) Actions and Effects of Present Embodiment
(50) According to the present embodiment, the housing 3 that holds the shield member 2 has the joining portion 32 that integrally joins the outer housing portion 30 and the inner housing portion 31 in an end portion on one side in the direction parallel to the direction of mating with the partner connector 100. In other words, the housing 3 is constituted by one component in which the outer housing portion 30 and the inner housing portion 31 are integrated via the joining portion 32. Accordingly, it is possible to reduce the number of components that constitute the electrical connector 1.
(51) Also, the joining portion 32 is provided in the end portion on one side of the housing 3. For this reason, the shield member 2 held in the housing 3 is not provided with a slit-shaped gap, and has a tubular shape. This therefore improves the bending resistance and twisting resistance of the shield member 2, and improves the rigidity of the electrical connector 1.
(52) Furthermore, due to the shield member 2 having a tubular shape, and the contact 4 being arranged therein, a gap that allows the intrusion of electromagnetic waves is not formed in the region surrounding the contact 4, and the contact 4 is reliably shielded by the shield member 2. Accordingly, a decrease in the shielding performance of the electrical connector 1 can be suppressed.
(53) Accordingly, according to the present embodiment, it is possible to provide the electrical connector 1 that enables reducing the number of components, improving rigidity, and suppressing a decrease in shielding performance.
(54) Also, due to reliably blocking the intrusion of electromagnetic waves toward the contact 4, the electrical connector 1 reliably exhibits shielding performance, and therefore is suitable for high frequency data transmission. This therefore enables realizing the electrical connector 1 that can also be applied to electronic devices that handle a large amount of information.
(55) Also, according to the present embodiment, the joining portion 32 is provided in the end portion of the housing 3 on the side that is connected to the partner connector 100 by mating. For this reason, the direction in which the shield member 2 is attached to the housing 3 during assembly of the electrical connector 1 and the direction in which the partner shield member 102 is connected to the housing 3 by mating can be set to opposite directions. Accordingly, it is possible to avoid the case where the end portion of the shield member 2 and the end portion for connection to the partner connector 100 by mating are both arranged in the end portion on one side in the direction parallel to the mating direction. Accordingly, it is possible to prevent the structure of the electrical connector 1 from becoming complex. Also, the end portion of the joining portion 32 on the side that is connected to the partner connector 100 by mating has a simple structure, thus making it possible to obtain the electrical connector 1 that can be connected easily.
(56) Also, according to the present embodiment, the housing 3 is provided so as to cover part or all of the end portion of the shield member 2 on the side that is mated with the partner connector 100. Moreover, the housing 3 is formed from an insulating resin material. For this reason, even if the end portion of the partner connector 100 collides with the end portion of the electrical connector having the above configuration, it is possible to mitigate the impact, and it is possible to realize the electrical connector 1 that is not likely to become damaged at the end portion. Also, the electrical connector having the above configuration may be realized as an electrical connector having a housing in which a portion that is in the end portion on the side that is connected to the partner connector by mating and that is inward of the outer circumferential edge portion covers at least part of the end portion of the shield member, for example.
(57) Also, according to the present embodiment, the shield member 2 has a rectangular tubular shape that is constituted by the four side walls 20. Among the four side walls 20 of the shield member 2, three side walls (first side wall 20a, second side wall 20b, and fourth side wall 20d) each have a contacting portion 21 for coming into contact with the partner shield member 102 that blocks electromagnetic waves in the partner connector 100. For this reason, the shield member 2 can support the partner shield member 102 from three directions when the connectors are connected.
(58) The shield member 2 can therefore be grounded with the partner shield member 102 in a stable state. The shield member 2 is also in contact with the partner shield member 102 at a larger number of locations, thus making it possible to realize more reliable grounding.
(59) Also, in the present embodiment, the housing 3 of the electrical connector 1 is provided so as to cover the end portion of the shield member 2 on the side for mating with the partner connector 100, in order to prevent damage when a collision occurs between the electrical connector 1 and the partner connector 100. For this reason, it is desirable that the shield member 2 is provided with a mechanism for connection to the inserted partner shield member 102. In regards to this, the shield member 2 of the electrical connector 1 of the present embodiment has the elastic contacting portions 21 that undergo outward elastic deformation when the partner shield member 102 is inserted. The elastically deformed elastic contacting portions 21 support the partner connector 100 by pressing the wall surface portions 102b of the partner shield member 102 when the connectors are connected. Accordingly, even in the present embodiment configured such that the housing 3 covers the end portion of the shield member 2 so as to prevent damage when a collision occurs between the connectors, the shield member 2 and the partner shield member 102 can be connected by the elastic contacting portions 21 when the connectors are connected. Moreover, when the connectors are connected, the contact 4 is surrounded by two components, namely the shield member 2 and the partner shield member 102 that has been inserted into the shield member 2 and is connected by the shield member 2. This therefore further improves the shielding performance.
(60) Although an embodiment of the present invention has been described thus far, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope recited in the claims. In other words, the present invention is not limited to the above embodiment, and all modifications, applications, and equivalents thereof that fall within the claims, for which modifications and applications would become naturally apparent by reading and understanding the present specification, are intended to be embraced in the claims of the invention. For example, variations such as the following can be carried out.
(61) Variations
(62) Although the above embodiment describes an example of an electrical connector that includes one contact, the present invention may be applied to an electrical connector configured as a multipolar connector that includes multiple contacts. Note that the following describes a variation with reference to the drawings, and elements having configurations similar to those of the above embodiment, as well as elements having configurations that correspond to those of the above embodiment, will be denoted by the same reference signs in the drawings or referred to by the same reference signs, thereby omitting descriptions for them.
(63)
(64) As shown in
(65) The housing 3A is different from the housing 3 of the above embodiment in that the outer housing portion 30 is not provided with the opening portion 30g that is formed in the lower side of the third outer housing portion 30c. Furthermore, the housing 3A is different from the housing 3 of the above embodiment in that the inner housing portion 31 includes a contact housing portion 31c that projects upward from the contact holding portion 31b and holds the contacts.
(66) The electrical connector 1A of the present variation is provided with four contacts 4A. The contacts 4A each have a contact main body portion (not shown), a contact portion 41A, a curved portion 42A, an extending portion 43A, and a substrate connection portion 44A.
(67) The contact portion 41A of each of the contacts 4A extends in the up-down direction in the contact housing portion 31c. The contact portions 41A of two of the four contacts 4A are provided on the front side of the contact housing portion 31c. The contact portions 41A of the remaining two of the four contacts 4A are provided on the rear side of the contact housing portion 31c. The contact portions 41A are in contact with and electrically connected to partner contacts when the connectors are connected. Also, the leading end portions of the contact portions 41A are provided so as to be inclined outward from the contact housing portion 31c so as to come into contact with the partner contacts when the connectors are connected.
(68) Each of the curved portions 42A curves toward the rear side of the housing 3A at the lower end of the contact main body portion. Specifically, the curved portion 42A curves from the lower end of the contact main body portion toward the side of the housing 3A on which the joining portion 32 is provided. The extending portion 43A extends rearward from the curved portion 42A along a path below the third side wall 20c. The substrate connection portion 44A is provided so as to extend rearward from the extending portion 43A and also extend substantially parallel with the substrate. The substrate connection portion 44A is provided as a portion that is electrically and mechanically connected to the substrate by soldering.
(69) Effects similar to those of the above embodiment can be achieved in the present variation as well. Specifically, according to the present variation, in the electrical connector 1A that includes multiple contacts, it is possible to reduce the number of components, improve rigidity, and suppress a decrease in shielding performance.
INDUSTRIAL APPLICABILITY
(70) The present invention is broadly applicable to an electrical connector that has a metallic shield member for blocking electromagnetic waves.