JPH1167364A - Board-mounting type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board-mounting type connector including a contacting structure improved, so that a metal fixture contacts with each shield member by a sufficient resilient contacting force. SOLUTION: A board mounting type connector 10 is furnished with a first housing 20a fixed to a circuit board and a second housing 20b arranged movable relative to the first 20a. The freely moving characteristic of the first 20a and second housings 20b relative to each other is given by the spring part 18 of a contact 15. At the ends of the first housing 20a, metal fixtures are furnished to secure the housing 20a strongly to the circuit board. Shield members 70 are attached to the periphery of the second housing 20b, and a resilient contacting piece is mounted on each shield member 70. The resilient contacting piece assumes an approx. U-shape and is arranged as being capable of pinchedly holding a plate for contacting which is provided on each metal fixture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mount type connector mounted on a circuit board, and more particularly to a so-called shield type connector in which a shield member mounted on an outer periphery of an elongated housing is mounted. The present invention relates to a surface mount type connector in which a fixing member provided at an end is in contact with a shield member.

[0002]

2. Description of the Related Art A conventional example of this type of connector is disclosed in Japanese Unexamined Patent Publication No.
-279380. The disclosed connector is a shield-type board-mounted connector, in which a shield member is mounted on an outer surface of a housing. Fixing fittings are attached to both ends of the elongated housing. The shield member is provided with an elastic contact piece. The resilient contact pieces are resiliently contacted with the fixture, thereby enabling mutual connection between the shield member and the circuit board.

[0003]

In recent years, however, there has been a need for a shielded connector and a connector having a floating property at the same time as a mating connector, that is, a so-called floating connector, particularly in the field of computers.

SUMMARY OF THE INVENTION An object of the present invention is an improved contact structure in which a fixture and a shield member are brought into contact with a sufficient elastic contact force. An object of the present invention is to provide a board-mounted connector including a contact structure with a member.

[0005]

According to the present invention, there is provided a fixing member which is located on both ends of an elongated housing fixed on a circuit board, and a shield member which is located on the outer periphery of the housing and is in contact with the fixing member. In a board-mounted connector having a mating connector fitted in a direction substantially orthogonal to the circuit board, the shield member extends toward the circuit board and further extends in a direction opposite to the circuit board. It has an elastic contact piece, and the above-mentioned fixture has a contact plate part pinched by the above-mentioned elastic contact piece.

[0006] Preferably, the fixing bracket has a pair of surface mounting portions and a straddle portion provided so as to bridge them. Preferably, the contact plate is provided on the straddle. It is preferable that a pair of press-fitting fixing portions for press-fitting into the housing is provided near the pair of surface mounting portions.

[0007] Preferably, the elastic contact piece extends from a band-like portion extending laterally from the shield member and extends to the circuit board side, and is orthogonal to a plate surface of the first portion. A second portion extending in the direction, i.e., outwardly, and a third portion extending from the second portion further in a direction opposite to the circuit board and opposite the first portion. In particular, it is preferable that the third portion is provided with a contact projection for contacting the fixing bracket, and that the first portion is provided with a dimple at a position facing the contact projection.

Further, the present invention has a first housing fixed on a circuit board, and a second housing movably with respect to the first housing, and is orthogonal to the circuit board. In a floating type board mounted connector configured to be fitted with a mating connector from a direction, shield members including elastic contact pieces are attached to an outer periphery of the second housing, and both end portions of the first housing are provided. Is provided with a fixture including a relatively wide contact surface that comes into contact with the elastic contact piece.

Preferably, the elastic contact pieces of the shield member are provided on both side ends of the second housing.

[0010] Preferably, a fixing engagement piece engaged with the second housing is provided in parallel with the elastic contact piece. The fixing engagement piece is disposed so as to be deviated from the elastic contact piece so that when the elastic contact piece is displaced, it does not interfere with the elastic contact piece.

[0011] Preferably, the first and second housings have a floating characteristic in which the first and second housings are freely moved in a rotating direction about a longitudinal direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 1A and 1B are diagrams schematically showing the structure of a surface mount type connector, wherein FIG. 1A is a plan view and FIG. 1B is a front view. FIG. 2 is an enlarged cross-sectional view taken along a line AA in FIG.

Referring to FIG. 1, a surface mount connector 10 accommodates a number of contacts 15 in an elongated housing 20 in two rows. At both ends in the longitudinal direction of the housing 20, fixing brackets 50 for firmly fixing the surface mount connector 10 on a circuit board (not shown) are provided. The surface mount type connector 10 is a shield type connector,
A pair of metal shield members 70 are mounted on the outer peripheral surface of the housing 20. The metal shield member 70 is formed by bending a metal plate into a substantially “U” shape, and is mounted from both sides in the length direction of the housing 20. As will be described in detail later, the shield members 70, 70 are electrically connected to the fixture 50.

Referring to FIG. 2, the housing 20 of the surface mount type connector 10 is composed of an upper and lower body. It can be seen that the upper and lower housings 20a, 20b are connected by contacts 15. The contact 15 has a contact portion 16 that comes into contact with the mating contact when mated with the mating connector, an extended portion 17 that extends linearly below the contact portion 16, and a substantially “U” shape under the extended portion 17. And a tine 19 including a surface mounting portion 19a located below the spring portion 18 and connected to a circuit board. The contacts 15 of the surface mount connector 10 include signal contacts and ground contacts, which have the same shape and size. The contact 15 shown in FIG. 2 is used for ground connection, and comes into contact with the elastic piece 71 of the shield member 70. The elastic piece 71 is formed by cutting and raising the shield member 70, and is brought into contact with the contact 15 through the through slot 22 formed at a predetermined position of the housing 20b. Although not shown, the through slot 22 is not formed at the position of the contact 15 used for a signal, and the elastic piece 71 is not provided.

Of the two housings described above, the tine 19 of the contact 15 is press-fitted and held in the lower first housing 20a, and the extension 17 is press-fitted in the upper second housing 20b. Will be retained. A spring 1 is provided between the extension 17 of the contact 15 and the tine 19.
It will be appreciated that the location of 8 provides a floating or floating characteristic between the upper and lower housings 20a, 20b. First and second housings 20a,
20b has a movability in the length direction thereof, that is, the direction of arrow C in FIG. 1A due to the presence of the spring portion 18, but in addition to this, in particular, as shown in FIG. Since the fifteen substantially “U” shaped spring portions 18 are arranged so as to protrude toward the center of the surface mount type connector 10,
It is possible to move in a rotation direction such as the direction of arrow B in FIG. A partition 21 is formed between the opposing spring portions 18 of the two rows of contacts 15 by the first housing 20a. In addition, by accurately positioning the tines 19 and holding the tines 19 in the first housing 20a, sufficient coplanarity of the surface mounting portion 19a for surface mounting connection to the circuit board can be obtained.

FIG. 3 is a view showing a shield member.
(A) is a plan view, (b) is a front view, and (c) is a side view.

The shield member 70 is connected to one housing 20.
Are mounted in pairs. FIG. 3 shows only one of them. The shield member 70 has a main plate 72 that covers the lengthwise side surface of the elongated housing 20. Near the lower end of the main plate 72, a substantially L-shaped first concave portion 73 is formed in addition to the above-described elastic piece 71, thereby defining a first tongue piece 77. As understood from FIG. 3A, the tongue piece 77 is bent and formed so as to be deviated from the plate surface of the main plate 72. This is because the shield member 70 is
This is one of the fixing means for mounting on the zero, and its operation will be described later. A fitting portion 88 is formed on the top side of the main plate 72. As can be understood from FIGS. 3A and 3C, the fitting portion 88 is slightly deviated from the plate surface of the other portion of the main plate 72. The mating portion 88 has a doubly supported contact portion 75 defined by a substantially horizontally extending slot 74. Contact part 7
5 includes a projection 76 for contact. The fitting portion 88 is configured such that when the surface mount type connector 10 is fitted with the mating connector, the contact projection 76 is connected to the ground contact of the mating connector. Provides contact pressure for As shown, a second recess 78 is formed in the main plate 72 in communication with the slot 74, thereby defining a second tongue 79. The second recess 78 has a wide portion 78 a below the tongue piece 79. These configurations are for locking the shield member 70 to the housing 20 in cooperation with the first tongue piece 77 described above. As shown, the first tongue 77 is attached to the shield member.
Are provided, and four second tongue pieces 79 are provided.
It should be noted that the same number of tongue pieces 77, 79 pointing to the right side are formed.

The main plate 7 is located at both end positions of the shield member 70.
2, a band-shaped portion 80 is formed by being bent and extended in a direction perpendicular to the main plate 72 from the relatively top position, whereby the outer shape of the shield member 70 is made substantially "U" -shaped (FIG. a)). An elastic contact piece 81 extending further downward is formed on the belt-shaped portion 80. The elastic contact piece 81 includes a first portion 81a extending downward from the band portion 80, a second portion 81b extending outward in a direction orthogonal to the plate surface of the first portion 81a, and further upward from the second portion 81b. First for
A third portion 81c extending opposite to the portion 81a.
The third portion 81c is provided with a contact protrusion 82 for making contact with the fixing bracket, and the first portion 81 facing the contact protrusion 82 is provided.
A dimple 83 is formed at a position above “a”.

At the relatively bottom positions on both side ends of the shield member 70, there are provided wall portions 84 which are also formed by being bent substantially perpendicularly to the main plate 72. The wall portion 84 includes a fixing engagement piece 85 formed to bend the plate surface. The fixing engagement piece 85 engages with the second housing 20b. It should be noted that, as shown in FIGS. 3A and 3B, the wall portion 84 including the fixing engagement piece 85 is provided to be deviated from the elastic contact piece 81.

FIGS. 4A and 4B are views showing the fixing bracket. FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a side view.

The fixing bracket 50 includes a pair of surface mounting portions 51,
It has a base portion 54 extending substantially perpendicular to the surface mount portion 51 and a straddle portion (contact plate portion) 52 formed so as to bridge them. As a result, the outer shape of the fixing bracket 50 has an arch shape. The base 54 and the straddle 52 are coplanar. Relatively wide flat contact surfaces 53a and 53b are provided on both surfaces of the straddle portion 52. Contact surface 53
a and 53b are elastic contact pieces 81 of the shield member as described later.
The action is described later. In addition, a pair of press-fitting fixing portions 55 are provided near the pair of surface mounting portions 51 by bending and extending the metal plate surface from the base portion at a substantially right angle. The press-fit fixing portion 55 includes a downward protrusion 56 including a press-fit protrusion.

FIGS. 5A and 5B are enlarged views showing an end portion of the surface mount type connector. FIG. 5A is a partially enlarged plan view, FIG. 5B is a partially enlarged front view, and FIG. 5C is a side view.

Next, referring to FIG. 1 to FIG.
Assembling of the shield member 70 and the fixing bracket 50 with respect to the "0" and their electrical interconnection will be described.
In the first stage of assembly, the shield member 70 is assembled to the upper housing 20b. According to FIGS. 1 and 5, the first claw portions 23 are provided at four positions relatively closer to the bottom side on the longitudinal side surface of the housing 20b, and the second claw portions are provided at six positions relatively closer to the top side. Is provided.
The shield member 70 is first placed on the side surface of the housing 20 with the wide opening portion 78a aligned with the second claw portion 24. At this time, the first claw 23 is configured to be aligned with the first recess 73. Further, at this time, the fixing engagement pieces 85 located on both side ends of the shield member 70 ride on the projections 25 formed on the surfaces on both side ends of the housing 20 and are elastically bent. Thereafter, the shield member 70 is moved downward relative to the housing 20. Thereby, as shown in FIG. 1 and FIGS. 5A and 5B, the first claw portion 23 and the second claw portion 24 of the second housing 20b.
Then, the first tongue piece 77 and the second tongue piece 79 of the shield member 70 are engaged with each other so as to overlap each other, and the shield member 70 is prevented from being pulled out. When the shield member 70 reaches a predetermined position with respect to the housing 20b, the fixing engagement piece 85 engages with the shoulder 25a of the projection 25,
The shield member 70 is prevented from coming off to the top side. In the process of sliding the shield member 70, the elastic piece 71 that comes into contact with the ground contact 15 moves inside the through slot 22 as described above. It should be noted that the through slot 22 is formed to have a dimension including a sliding dimension in addition to the dimension of the elastic piece 71.

After the assembly of the shield member 70 is completed, the fixing bracket 50 is assembled as a second stage of the assembly. The fixing fittings 50 are assembled from the top side to both end positions of the lower housing 20a, and are press-fitted and fixed to the housing 20a by the press-fitting projections 56 described above. FIG.
According to (a) and (b), the press-fit projection 56 is
It is understood that it is located along the outer surface of a. At this time, the straddle portion 52 of the fixing bracket 50 is received between the first portion 81a and the third portion 88c of the elastic contact piece 81, and is elastically held therebetween. Therefore, the straddle section 52
Due to the elastic contact between the contact surfaces 53a and 53b and the elastic contact piece 81, electrical conduction between the shield member 70 and the fixture 50 is established. As shown in FIG. 5C, a pair of elastic contact pieces 81, 81 extending from the pair of shield members 70, 70 and juxtaposed at both end positions are provided on the straddle portion 52.
It should be noted that it is sandwiched between. And especially FIG.
As shown in (a) and (b), a gap 95 is provided inside the elastic contact piece 81. Therefore, when the upper and lower housings 20a, 20b are moved particularly in the length direction, that is, in the direction of arrow C in FIG. 1A, the elastic contact pieces 81 that contribute to the electrical conduction between the shield member 70 and the fixing bracket 50. The contact portion between the and the straddle portion 52 follows this, and stable electrical contact between the two is maintained. In addition, both housings 2
2a, the relatively wide contact surfaces 53a, 53b of the straddle portion 52 are in contact with the elastic contact piece 81 at any position. , The stable electrical conduction is maintained in this case as well.

As described above, the surface mount type connector according to the preferred embodiment of the present invention has been described. However, this is merely an example, and does not limit the present invention.

[0027]

According to the board mounted connector of the present invention,
The shield member has an elastic contact piece extending toward the circuit board and further extending in the opposite direction to the circuit board, and the fixing bracket has a contact plate portion sandwiched between the elastic contact pieces. In addition, a stable electrical interconnection between the shield member and the fixture is realized by a sufficient elastic contact force.

Further, according to the board-mounted connector of the present invention, there are provided first and second housings having floating properties,
A shield member including an elastic contact piece is mounted on the outer periphery of the second housing, and a relatively wide contact surface that contacts the elastic contact piece of the shield member is provided on both ends of the first housing fixed to the circuit board. Since the first and second housings are displaced from each other, stable electrical interconnection between the shield member and the fixing bracket is realized.

[Brief description of the drawings]

1A and 1B are diagrams schematically illustrating a configuration of a surface mount type connector, wherein FIG. 1A is a plan view and FIG. 1B is a front view.

FIG. 2 is an enlarged cross-sectional view taken along a line AA in FIG.

3A and 3B are views showing a shield member, wherein FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a side view.

FIG. 4 is a view showing a fixing bracket, (a) is a plan view,
(B) is a front view, and (c) is a side view.

FIGS. 5A and 5B are enlarged views showing an end portion of the surface mount connector, FIG. 5A is a partially enlarged plan view, FIG. 5B is a partially enlarged front view, and FIG. 5C is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Board-mounted connector 20a 1st housing 20b 2nd housing 50 Fixing fitting 52 Contact plate part (straddle part) 53a, 53b Contact surface 70 Shield member

Claims (2)

[Claims] An elongate housing fixed to both ends of a slender housing fixed on a circuit board; and a shield member located on an outer periphery of the housing and in contact with the fixing metal. Wherein the shield member has an elastic contact piece extending toward the circuit board and further extending in the opposite direction with respect to the circuit board. The surface mount type connector, wherein the metal fitting has a contact plate portion sandwiched between the elastic contact pieces. 2. A first housing fixed on a circuit board, and a second housing movably with respect to the first housing.
A floating type board mounted connector configured to be fitted to a mating connector from a direction orthogonal to the circuit board, wherein an elastic contact piece is provided on an outer periphery of the second housing. A board-mounted connector, wherein a shield member is mounted, and a fixing fitting including a relatively wide contact surface for contacting the elastic contact piece is provided on both side ends of the first housing.