JP4143092B2 - connector - Google Patents

Description

  The present invention relates to a connector, and more particularly to a connector that is mounted on a surface of a circuit board and electrically connects two circuits.

FIG. 3 shows a first example generally used in the past for a surface mount type connector that is mounted on the surface of a circuit board and electrically connects the circuits formed on these circuit boards. Shown in (a), (b).
The connector of the first example includes a receptacle 100x and a plug 200x that are mounted on the surface of the circuit board, respectively, and the details thereof are as follows.

  First, the receptacle 100x includes a plurality of pairs of contacts 110x and 120x that are paired with each other, and a housing 130x that holds and holds the plurality of sets of contacts 110x and 120x. Each of the contacts 110x and 120x is soldered to a circuit on a circuit board. And connecting terminals 111x and 121x connected by the like, and contact portions 119x and 129x that press-contact with the contact of the other party of connection, and the space between them is bent twice in a U-shape so that the height dimension is It has a shortened shape and is integrally formed of a strip-shaped conductive member (for example, a metal strip plate). The housing 130x is inserted into a U-shaped bent portion on the connection terminal side of the contacts 110x and 120x to hold and fix the contacts, and the contact portion of the contacts 110x and 120x is a counterpart contact. And a contact connection chamber 138x for pressure contact connection.

  On the other hand, the plug 200x includes a plurality of sets of plug contacts 210x and 220x corresponding to the plurality of sets of contacts 110x and 120x of the receptacle 100x, and a plug housing 250x that holds the plug contacts in an array. Protrusion holding portions 251x for holding these plug contacts are provided so that the contact portions (210x, 220x) can enter the contact connection chamber 138x of the receptacle 100x and make contact contact with the counterpart contacts (110x, 120x).

  Since the connector of the first example has a low profile, its height dimension is extremely low, and the contacts 110x and 120x on the receptacle 100x side are bent in a U-shape. There is a problem that the spring property cannot be improved, and stress due to deflection at the time of contact connection is concentrated in the vicinity of the contact portion.

Therefore, in order to solve these problems, a connector (referred to as a second example in the background art) as shown in FIGS. 4A and 4B has been developed. In this second example, the contacts 110y and 120y of the receptacle 100y have the same height dimension as that of the first example described above, but from the part held by the housing to the contact part. The dimensions are lengthened to improve springiness and prevent stress concentration. Note that the plurality of sets of contacts 110y and 120y are arranged and held in a housing 130y as shown in FIG. 5 (see, for example, Patent Document 1).
JP 2004-55463 A

  In the first example of the connector in the background art described above, the contact of the receptacle is bent in a U shape in the vicinity of the connection terminal, and a part of the housing is inserted into this part. It is a structure that is held, and the subsequent length to the contact point is longer in the second example than in the first example, and the spring property is improved and stress is concentrated near the contact point. However, if the length to the contact portion is increased, the overall dimension in that direction increases and the entire connector becomes larger. In this second example, both contacts are connected to each other in the receptacle and the plug. Since both parts are structured to be held and fixed to the housing, if the holding and fixing parts of these contacts are not formed accurately, the receptacle and plug cannot be fitted together, or connection failure between contacts occurs. Furthermore, in both the first and second examples, since one circuit is connected to a pair of contacts, it is necessary to increase the number of contacts in order to increase the number of transmission signals. There is a problem that it is difficult to increase the number of transmission signals because the overall size becomes large.

  In view of the above problems in the background art, the object of the present invention is to improve the spring property of the contact and to improve the stress concentration in the vicinity of the contact portion, and can be fitted without using a high-precision forming technique. It is an object of the present invention to provide a connector that can be reduced in cost without poor connection or poor connection and that can easily increase the number of transmission signals.

The connector of the first invention of the present application comprises a receptacle mounted on the surface of the first circuit board, and a plug mounted on the surface of the second circuit board and mated with the receptacle. Sometimes a connector for electrically connecting the circuit of the first circuit board and the circuit of the second circuit board, wherein the receptacle and the plug have the following configurations. .

Each of the receptacles is a strip-shaped elastic plate having a first conductor layer formed on one surface thereof, and one end portion thereof is used as a connection terminal forming portion, and a portion following the connection terminal forming portion is used as a held portion. First, the portion connected to the held portion is bent up with the first conductor layer side inward, then bent in a U-turn shape further inward, and then the other side is folded. The part immediately before the end is bent in a semicircular arc shape with the first conductor layer side facing outward, and then the part immediately before the other end is bent inwardly in a U-turn shape. The folded portion is formed so as to be located inside the opening of the semicircular arc-shaped portion, and one end portion of the first conductor layer is used as a first connection terminal, At the end, inside the opening of the bent part in the semicircular arc shape A plurality of contacts a portion as a first contact portion, and these first connection terminal and the first contact portion and the first connection conductor,
Each of the strip-shaped elastic plates forming the plurality of contacts is bent back from the connection terminal forming portion on the back surface side of the first conductor layer forming surface, and then folded into a U-turn shape. A second conductor insulated from the first conductor layer between the first contact portion and a portion facing the first contact portion, which is inside the opening of the portion bent in the semicircular arc shape. A layer is formed, and the connection terminal forming portion of the second conductor layer becomes a second connection terminal, which is inside the opening of the portion bent in the semicircular arc shape, relative to the first contact portion. A plurality of second connection conductors whose facing portions serve as second contact portions;
The plurality of contacts are deformed by fitting with the plug, and due to this deformation, the plurality of fixed contacts in which the second connection conductors of the plurality of contacts are pressure-contact connected correspondingly,
A housing in which the plurality of contacts each having the second connection conductor formed thereon are held and arranged by the held portions so that each bent portion can be deformed when fitted with a plug; and Consists of
The plug is disposed corresponding to the plurality of contacts of the receptacle, and when the plug is engaged with the receptacle, the plurality of first plugs are connected in pressure contact with the first contact portion of the corresponding contact. Contacts,
A plurality of second plug contacts disposed corresponding to the plurality of contacts of the receptacle, wherein when the plug is engaged with the receptacle, a plurality of second plug contacts are connected in pressure contact with a second contact portion of the corresponding contact;
When the plurality of first plug contacts and the plurality of second plug contacts are engaged with the receptacle, the plurality of first plug contacts and the plurality of second plug contacts are a plurality of the receptacles. And a housing which is held and arranged in pressure contact connection with the corresponding first contact portion and second contact portion.

The connector of the second invention of the present application comprises a receptacle mounted on the surface of the first circuit board, and a plug mounted on the surface of the second circuit board and fitted to the receptacle. A connector for electrically connecting between the circuit of the first circuit board and the circuit of the second circuit board at the time of fitting, wherein the receptacle and the plug have the following configurations. It is a connector.
The receptacle is
One end part of the belt-shaped elastic metal plate is used as a connection terminal forming part, the part following the connection terminal forming part is a held part, and the part connected to the held part is first bent and raised, Further, it bends in a U-turn shape and folds back (first U-turn part), and then bends in a semicircular arc shape along the rising curve until the other end immediately before, Subsequently, the portion immediately before the other end is bent in a U-turn shape and folded back (second U-turn portion), and the folded portion is located inside the opening of the portion bent in the semicircular arc shape. A plurality of first contacts each having a contact portion as an opposing portion of two U-turn portions, an insulating layer provided on the outer surface side of the first U-turn portion, and a conductor layer provided on the insulating layer; The plug is inserted between the turn parts. A plurality of second contacts having a connection terminal portion to the outside is fixed U the turn portion is inclined to the conductive layer contacts position,
A housing for holding and arranging the plurality of first contacts in the held portion so that each bent portion can be deformed when fitted with the plug, and fixing and holding the second contact;
Consists of
Plug is
Contacts are provided on the surface of the housing projection that is inserted between the two opposing U-turn portions of the receptacle and that contacts the contact portion of one U-turn portion and the surface that contacts the contact portion of the other U-turn portion. A plurality of such structures are aligned, and the connection portion of each contact to the outside is exposed at the rear portion of the housing.

In the connector of the present invention, the length from the holding portion to the contact portion of the housing of each contact of the receptacle can be increased without increasing the size of the entire connector, and the receptacle contact can be fitted. Since the displacement and deformation at the time are easy and large, the spring property of these contacts can be improved, and the stress in the vicinity of the contact portion can be prevented from concentrating.
In addition, the positions of the receptacle and plug contacts at the time of mating can be easily eliminated from poor mating and poor connection without being formed with high accuracy, and thus the cost can be reduced.

  Further, the receptacle contact can be formed with a second connection conductor of the second conductor layer on the back surface side, and the plug is provided with a second plug contact that is in pressure contact with the plug. The number of transmission signals can be doubled because it can be easily provided without increasing the shape and size, and the receptacle is also provided with a fixed contact for pressure contact connection to the second connection conductor of the contact. Therefore, the number of transmission signals can be further increased.

  In addition to the above, when the elastic elastic band is made of metal, the first U-turn portion is provided with an insulating layer thereon, a conductor layer is provided thereon, and the first U-turn portion is inclined by the insertion of the plug, the first contact The signal passing through the contact portion of the first U-turn portion is connected to the substrate electrode via the connection terminal of the second contact, and the signal reaching the connection terminal of the first contact is that of the second U-turn portion. Since there is only one signal passing through the contact portion, the conductors on the front and back sides of the connection terminal portion are connected to different substrate electrodes as in the case where the first conductor layer and the second conductor layer are provided on the front and back sides of the belt-like elastic plate material There is an advantage that there is no complicated structure and troublesome connection work that must be connected to.

  The best mode for carrying out the present invention comprises: a receptacle mounted on the surface of the first circuit board; and a plug mounted on the surface of the second circuit board and fitted to the receptacle. A connector for electrically connecting between the circuit of the first circuit board and the circuit of the second circuit board at the time of fitting, wherein the receptacle and the plug have the following configurations: Yes.

Each of the receptacles is a strip-shaped elastic plate having a first conductor layer formed on one surface thereof, and one end portion thereof is used as a connection terminal forming portion, and a portion following the connection terminal forming portion is used as a held portion. First, the portion connected to the held portion is bent up with the first conductor layer side inward, then bent in a U-turn shape further inward, and then the other side is folded. Between the part just before the end, bend in a semicircular arc shape with the first conductor layer side facing outward, and then the other part just before the other end bends inwardly in a U-turn. The folded portion is formed so as to be located inside the opening of the semicircular arc-shaped portion, and one end portion of the first conductor layer is used as a first connection terminal, and the other end is formed. Located on the inside of the opening of the curved portion of the semicircular arc A plurality of contacts a portion as a first contact portion, and these first connection terminal and the first contact portion and the first connecting conductor that,
Each of the strip-shaped elastic plates forming the plurality of contacts was bent up from the connection terminal forming portion on the back surface side of the first conductor layer forming surface and then folded into a U-turn shape. A second conductor layer that is insulated from the first conductor layer between the part that is inside the opening of the part bent in the semicircular arc shape and that is opposite to the first contact part. The connecting terminal forming portion of the second conductor layer becomes the second connecting terminal, and is opposed to the first contact portion, which is inside the opening of the bent portion in the semicircular arc shape. A plurality of second connection conductors, wherein the portion to be a second contact point;
The plurality of contacts are deformed by fitting with the plug, and due to this deformation, the plurality of fixed contacts in which the second connection conductors of the plurality of contacts are pressure-contact connected correspondingly,
A housing in which the plurality of contacts each having the second connection conductor formed thereon are held and arranged by the held portions so that the respective bent portions can be deformed when fitted to the plug; and Consists of
A plug is disposed corresponding to the plurality of contacts of the receptacle, and when the plug is engaged with the receptacle, a plurality of first contacts are connected in pressure contact with the first contact portion of the corresponding contact. Plug contacts;
A plurality of second plug contacts disposed in correspondence with the plurality of contacts of the receptacle and connected in pressure contact with a second contact portion of the corresponding contact when the plug is engaged with the receptacle; ,
When the plurality of first plug contacts and the plurality of second plug contacts are engaged with the receptacle, the plurality of first plug contacts and the plurality of second plug contacts are a plurality of the receptacles. A housing which is held and arranged in pressure contact connection with the corresponding first and second contact portions of the contacts of
Further, in addition to the configuration of the receptacle of the connector, the plurality of contacts are deformed by fitting with the plug, and this deformation causes the second connection conductors of the plurality of contacts to correspond to the pressure contact connection. In this configuration, a plurality of fixed contacts are provided.

Next, embodiments of the present invention will be described with reference to the drawings.
1A and 1B are a cross-sectional side view before fitting a receptacle and a plug, and a cross-sectional side view in a fitted connection state, showing an embodiment of the present invention.
The connector of this embodiment is composed of a receptacle 100 and a plug 200, the details of which are as follows.

First, the receptacle 100 has one end portion as a connection terminal forming portion with respect to the belt-like elastic plate material 117 in which the first conductor layer (the portions 111, 115, 113) is formed on one surface. After the portion connected to the connection terminal forming portion is a held portion (press-fit holding portion 118), the portion connected to the held portion is first bent up with the first conductor layer side inward, Further, it is bent in a U-turn shape on the inner side and then bent, and then the portion up to the portion immediately before the other end is bent in a semicircular arc shape with the first conductor layer side on the outer side, and further, The portion immediately before the other end is bent in a U-turn shape and folded back, and the folded portion is formed so as to be positioned inside the opening of the portion bent in the semicircular arc shape. One end of the conductor layer of the first conductor layer The connection terminal 111 is a first contact portion 113 that is located inside the opening of the semicircular arc-shaped portion at the other end, and the first connection terminal 111 and the first contact portion 113. And a plurality of contacts 110 (120) (the contact 120 has the same structure and shape as the contact 110) as a first connection conductor including the intermediate connection conductor 115 connecting them,
Each of the band-shaped elastic plates 117 forming the plurality of contacts is bent up from the connection terminal forming portion on the back surface side of the first conductor layer forming surface and then folded into a U-turn shape. The second portion insulated from the first conductor layer is located inside the opening of the portion bent in the semicircular arc shape and to the portion opposite to the first contact portion 113. Conductor layer (112, 114, 116) is formed, and the connection terminal forming portion of the second conductor layer becomes the second connection terminal 112, and the inside of the opening portion of the bent portion in the semicircular arc shape, The portion opposite to the first contact portion 113 becomes the second contact portion 114, and a plurality of second connection conductors including the intermediate connection conductor 116 connecting them,
Each of the plurality of contacts 110 (120) formed with the second connection conductor is held by a portion to be held (press-fit holding portion 118) such that each bent portion can be deformed when fitted with a plug. ) And a housing 130 (including a contact press-fit holding portion 131, a contact connection chamber 132, and a fixed contact holding portion 133).
The plug 200 is disposed corresponding to the plurality of contacts 110 (120) of the receptacle 100, and when the plug 200 is fitted to the receptacle 100, the first contact portion 113 of the corresponding contact and the pressure contact connection. A plurality of first plug contacts 210 (220),
A plurality of contacts 110 (120) of the receptacle 100 are arranged corresponding to the plurality of contacts 110, and when the plug 200 is fitted to the receptacle 100, a plurality of pressure contacts are connected to the second contact portions 114 of the corresponding contacts. A second plug contact 240 (230) of
When the plurality of first plug contacts 210 (220) and the plurality of second plug contacts 240 (230) are engaged with the receptacle 100, the plurality of first plug contacts 210 (220). ) And a plurality of second plug contacts 240 (230) are held and arranged in pressure contact connection with the corresponding first contact portions 113 and second contact portions 114 of the plurality of contacts of the receptacle 100. A plug housing 250 (including a protruding holding portion 251),
Further, the plurality of contacts 110 (120) are deformed in the receptacle 100 by fitting with the plug 200, and by this deformation, the second connection conductors of the plurality of contacts are correspondingly pressed and connected. A plurality of fixed contacts 140 are provided.

  In this embodiment, the contacts 110 and 120 of the receptacle 100 are press-fitted into the housing 130 (contact press-fitting holding part 131) by a press-fitting holding part 118 (held part) following the connection terminals 111 and 112 at one end. The bent portion of the contact portion 113 is arranged in the contact connection chamber 132 and can be freely deformed, and the contact portion 113 can be deformed without increasing the overall size. , 114 can be increased, so that the displacement and deformation of these contacts during fitting are easy, the spring property of the contacts can be improved, and stress is concentrated in the vicinity of the contact portion. Can be prevented. Further, it is possible to easily eliminate poor fitting or poor connection without using a highly accurate manufacturing technique.

  In addition, the contact of the receptacle can be independently formed with the second connection conductor of the second conductor layer on the back side of the first conductor layer, and the plug also has the second plug contact. Since it can be easily provided without increasing the shape and size, the number of transmission signals can be easily amplified. Further, since the receptacle is also provided with a fixed contact connected to the second connecting conductor when fitted, the path of the transmission signal can be further increased.

FIG. 2 is a diagram showing the configuration of another embodiment of the present invention.
(A) is sectional drawing before the fitting of the plug 200 and the receptacle 21, (b) is sectional drawing of a fitting state. The structure of the plug 200 is the same as that of the previous embodiment.
The receptacle 21 is not provided with a conductor layer on one side of the belt-like elastic plate material as in the previous embodiment, or a conductor layer insulated from each other on both surfaces, but the belt-like elastic plate material is the metal itself as the first contact, The U-turn part and the semicircular arc-shaped curved structure are the same as in the previous embodiment, but an insulating layer is provided on the outer surface side of the first U-turn part (first U-turn part) from the connection end with the substrate electrode. A conductor layer is provided thereon to form a contact with the plug contact and a contact with the fixed contact (second contact). The structure of the housing is the same as the housing 130 of the previous embodiment.

If it demonstrates with reference to (a) of FIG. 2, the insulating layer 12 will be provided in the outer surface side of the 1st U turn part 14 of the strip | belt-shaped elastic metal plate 11, and the conductor layer 13 will be provided on it.
When the plug 200 is inserted, the first U-turn part 14 and the second U-turn part 15 are expanded as shown in (b), and the plug contact 220 contacts the contact part 16 of the second U-turn part 15, The plug contact 230 comes into conduction with the connection end 19 and comes into contact with the contact portion 17 on the conductor layer 13 of the first U-turn portion 14. At the same time, the first U-turn portion 14 is pushed rightward by being pushed and expanded by the insertion of the plug 200, and the contact portion 18 of the conductor layer 13 contacts the fixed contact 140 (second contact). Conduction to the end 20 will occur.

  In the case of the embodiment of FIG. 1, the conductor layer is formed on both the front and back surfaces of the portion connected to the substrate electrode of the belt-like elastic plate material to form two signal paths, and the connection end is simply connected to the substrate electrode. Since both signal paths are short-circuited when soldered, the signal paths must be devised so that both signal paths are connected to two separate board electrodes. In the case of FIG. Since the signal is also one system, there is an advantage that the connection end 19 can be simply soldered to the substrate electrode.

It is a cross-sectional side view of a receptacle plug before fitting and in a fitting connection state, showing an embodiment of the present invention. It is a cross-sectional side view before the fitting of the other Example of this invention, and after a fitting. It is a cross-sectional side view before and after receptacle / plug fitting for explaining a first example in the background art. It is a sectional side view at the time of receptacle plug fitting, and a perspective view of the contact portion for explaining the 2nd example in background art. It is the top view and cross-sectional side view of a receptacle part for demonstrating the 2nd example in background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Strip | belt-shaped elastic metal plate 12 Insulating layer 13 Conductor layer 14 1st U-turn part 15 2nd U-turn part 16 Contact part 17 Contact part 18 Contact part 19 Connection end 20 Connection end 21 Receptacle 100, 100x, 100y Receptacle 110, 110x, 110y Contact 111, 111x, 112 Connection terminal 113, 114 Contact part 115, 116 Intermediate connection conductor 117 Strip elastic plate 118 Press-fit holding part 119x Contact part 120, 120x, 120y Contact 121x, 121y Connection terminal 129x, 129y Contact part 130, 130x, 130y Housing 131 Contact press fitting holding portion 132 Contact connection chamber 133 Central contact holding portion 137x, 137y Contact holding portion 138x, 138y Contact connection chamber 140 Central contact 200, 200x , 200y Plug 210, 210x, 210y, 220x Plug contact 220-240 Plug contact 250, 250x, 250y Plug housing 251, 251x, 251y Projection holding part 300 Circuit board

Claims (2)

A receptacle mounted on the surface of the first circuit board; and a plug mounted on the surface of the second circuit board and mated with the receptacle. A connector for electrically connecting a circuit and a circuit of the second circuit board, wherein the receptacle and the plug have the following configurations.
The receptacle is
Each of the elastic strips having the first conductor layer formed on one surface thereof, the one end portion thereof serves as a connection terminal forming portion, and the portion following the connection terminal forming portion serves as a held portion. First, the portion connected to the first portion is bent with the first conductor layer side inward, and then bent further inwardly in a U-turn shape, and then immediately before the other end. Until the first conductor layer side is bent outwardly and bent in a semicircular arc shape, and then the portion immediately before the other end is bent inwardly in a U-turn shape and folded. The folded portion is formed so as to be located inside the opening of the portion bent in the semicircular arc shape, and one end portion of the first conductor layer serves as a first connection terminal , and the other end, a portion positioned in the opening inside portion that curved in the semicircular first And contact portions, and <br/> plurality of contacts that these first connection terminal and the first contact portion and the first connecting conductor,
Each of the strip-shaped elastic plates forming the plurality of contacts is bent back from the connection terminal forming portion on the back surface side of the first conductor layer forming surface, and then folded into a U-turn shape. A second conductor insulated from the first conductor layer between the first contact portion and a portion facing the first contact portion, which is inside the opening of the portion bent in the semicircular arc shape. A layer is formed, and the connection terminal forming portion of the second conductor layer becomes a second connection terminal, which is inside the opening of the portion bent in the semicircular arc shape, relative to the first contact portion. The facing part becomes the second contact part
A plurality of second connecting conductors;
The plurality of contacts are deformed by fitting with the plug, and due to this deformation, the plurality of fixed contacts in which the second connection conductors of the plurality of contacts are pressure-contact connected correspondingly,
The plurality of contacts on which the second connection conductors are formed are respectively held and arranged by the held portions so that the respective bent portions can be deformed when fitted to the plug. <Br / > Housing,
Consists of
Plug is
Are arranged corresponding to a plurality of contacts of the receptacle, when the plug is mated with the receptacle, a plurality of first plug contacts the first contact portion and the pressure contacting of the contact its corresponding,
It is arranged corresponding to the plurality of contacts of the receptacle, and when this plug is engaged with the receptacle, it is in pressure contact connection with the second contact portion of the corresponding contact.
A plurality of second plug contacts;
When the plurality of first plug contacts and the plurality of second plug contacts are engaged with the receptacle, the plurality of first plug contacts and the plurality of second plug contacts are a plurality of the receptacles. A plug housing that is held and arranged in pressure contact connection with a corresponding first contact portion and second contact portion of the contacts ;
Consists of. A receptacle mounted on the surface of the first circuit board; and a plug mounted on the surface of the second circuit board and mated with the receptacle. A connector for electrically connecting a circuit and a circuit of the second circuit board, wherein the receptacle and the plug have the following configurations.
The receptacle is
One end part of the belt-shaped elastic metal plate is used as a connection terminal forming part, the part following the connection terminal forming part is a held part, and the part connected to the held part is first bent and raised, Further, it bends in a U-turn shape and folds back (first U-turn part), and then bends in a semicircular arc shape along the rising curve until the other end immediately before, Subsequently, the portion immediately before the other end is bent in a U-turn shape and folded back (second U-turn portion), and the folded portion is located inside the opening of the portion bent in the semicircular arc shape. A plurality of first contacts each having a contact portion as an opposing portion of two U-turn portions, an insulating layer provided on the outer surface side of the first U-turn portion, and a conductor layer provided on the insulating layer; The plug is inserted between the turn parts. A plurality of second contacts having a connection terminal portion to the outside is fixed U the turn portion is inclined to the conductive layer contacts position,
The plurality of first contacts are held and arranged by the held portions so that each bent portion can be deformed when fitted with the plug, and the second contacts are fixedly held. When,
Consists of
Plug is
Contacts are provided on the surface of the housing projection that is inserted between the two opposing U-turn portions of the receptacle and that contacts the contact portion of one U-turn portion and the surface that contacts the contact portion of the other U-turn portion. A plurality of such structures are aligned, and the connection portion of each contact to the outside is exposed at the rear portion of the housing.

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