JP2015133204A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which can correspond to large current use by decreasing the resistance of a terminal, and is equipped with a terminal having a moving portion capable of corresponding to large current use.SOLUTION: A connector 1 is provided with a platy first terminal 9 and a second terminal 10 connected to flat-type conductor 4 at one end and connected to the same substrate contact 2b of a substrate 2 at the other end, and a housing 3 for holding those terminals 9 and 10 in parallel so as to make platy terminal surfaces along a longitudinal direction vertical to a surface of the substrate 2. The terminals 9 and 10 are respectively equipped with a contact portion 5 conductively connected to the flat-type conductor 4, spring portions 9c and 10c arranged with two platy terminals branching off from the contacting portion 5 and extending in parallel; and substrate connecting portions 9e and 10e conductively connected with the substrate contact 2a on a terminal sides of the spring portions 9c and 10c. Therefore, current values of the spring portions 9c and 10c are lowered, and made to correspond to a large current.

Description

  The present invention relates to a connector suitable for a large current application that is used for connecting, for example, an in-vehicle device or the like to electrically connect a substrate and an electronic component.

  Along with the advancement of vehicle electrification, connectors that can connect in-vehicle devices to each other are required to be able to handle high-current applications. Among them, there is a terminal with a movable part as a measure against connector misalignment and vibration. The connector which has is used (for example, patent document 1). According to this, since the vibration can be absorbed by the elastic deformation of the movable part of the terminal, there is an advantage that the conductive connection between the connection objects can be maintained and the connection reliability can be improved.

Japanese Patent Laid-Open No. 2-106882

  However, for a connector having such a movable part, the movable part is usually provided on the terminal as a thin metal piece in order to realize flexible elastic deformation. Has become too high, making it difficult to cope with recent high-current applications. In particular, in the case of a connector for a large current for an in-vehicle device, a current value flowing through the connector is gradually increased. Therefore, on the premise of the limited connector size and the number of terminals, it is first required to realize a connector structure that can cope with higher and higher current applications by reducing the resistance of the terminals as much as possible by increasing the cross-sectional area of the terminals. ing. On that basis, it is required to realize a movable part of the terminal in order to improve connection reliability.

  The present invention has been made based on the background described above, and an object of the present invention is to provide a connector that can cope with a large current application by reducing the resistance of a terminal. A further object of the present invention is to provide a connector including a terminal having a movable portion that can be used for a large current application.

In order to achieve the above object, the present invention is configured as follows.
That is, one end is connected to the same flat conductor as an object to be connected, and the other end is connected to the same substrate contact of the substrate, and the first and second terminals are in the form of flat plates. And a housing that holds the terminals in parallel so that the flat terminal surface is along the vertical direction perpendicular to the surface of the substrate, and each of the first and second terminals is the flat conductor. A contact portion that is conductively connected, an elongated portion in which a plurality of flat terminal pieces extending from the contact portion and extending are arranged in parallel, and a substrate connecting portion that is conductively connected to the substrate contact at the end side of each elongated portion Are connectors.

  According to the present invention, the housing holds the first and second terminals in parallel so that the flat terminal surface is along the vertical direction perpendicular to the surface of the substrate. As compared with the case where flat terminal surfaces are arranged side by side, the cross-sectional area of the terminals can be increased and the resistance can be reduced.

  Further, according to the present invention, since the first terminal and the second terminal are connected to the same flat conductor and the same substrate contact, a plurality of conduction paths are provided while increasing the cross-sectional area of the flat terminal. It can be used for large current applications by branching.

  Further, according to the present invention, each of the first terminal and the second terminal has an extending portion that branches and extends from the contact portion, so that at least four extending portions are divided into one flat conductor. Can do. Therefore, compared with the case where one flat conductor is connected by one extending portion, heat generated in the terminal can be suppressed by flowing a large current, and it can be used for a large current application.

  According to the present invention, since the extended portions of the first terminal and the second terminal have a structure in which flat terminal pieces extending from the contact portion and extending are arranged in parallel, the terminals of the first and second terminals Due to the parallel arrangement, the connector can be made compact in the thickness direction and the entire connector can be downsized. Moreover, since the elongated portion is a flat terminal piece, the cross-sectional area of the terminal can be increased to reduce the resistance, and can be used for large current applications.

The said invention can arrange | position the expansion | extension part of a 2nd terminal between the expansion | extension part which the 1st terminal branches.
According to this, the terminal arrangement in the extending portion can be made compact in the plate thickness direction, and the entire connector can be miniaturized.

In the present invention, the housing has an insertion port for the flat conductor along the vertical direction, and the contact portion of the first terminal and the contact portion of the second terminal are arranged vertically along the vertical direction. can do.
According to this, since the contact portion of the first terminal and the contact portion of the second terminal are arranged vertically along the vertically long insertion opening of the flat conductor, the flat terminal surface of the contact portion is parallel to the substrate. As compared with the case where the terminals are arranged side by side, the cross-sectional area of the terminal can be increased to reduce the resistance, and thus can be used for a large current application.

In the present invention, the housing may have a communication hole that communicates with at least either the contact portion of the first terminal or the contact portion of the second terminal inside the housing.
According to this, the heat which generate | occur | produces in the contact part which contacts a flat type conductor can be thermally radiated through a communicating hole, and the housing structure which can respond to a large current use is realizable.

In the present invention, the extending portions of the first and second terminals can have a movable piece portion in which a straight portion and a bent portion are combined.
According to this, it is possible to realize a connector terminal having a floating mechanism in which the extending portion is a movable piece portion, and it is possible to alleviate the load on the soldering portion due to connector misalignment and vibration during use. . Since the movable piece portion is configured by combining the straight portion and the bent portion, it is possible to realize a highly flexible terminal structure with a low spring coefficient having a spring length.

The present invention can be configured such that the contact portions of the first and second terminals have a plurality of arm-shaped contact portions.
By setting the number of contacts at the contact portion to be plural, the current value per contact portion can be reduced and heat generation at the contact portion can be suppressed, so that a contact structure corresponding to a large current application can be obtained.

In the present invention, the housing includes a locking portion that locks the substrate surface in a state where the housing is installed so as to overlap the thickness of the substrate in the vertical direction.
According to this, since the protrusion height of the connector from the board can be suppressed, it is possible to meet the demand for space saving inside the device in which the board is installed. In this case, it can be set as an edge connector by attaching to the board end of a board | substrate. Furthermore, in this case, by setting the fitting direction of the flat conductor to a direction along the board surface of the board, an edge connector capable of horizontal connection can be obtained.

In the present invention, the first and second terminals have a fixed piece portion for the housing, and the housing includes a fixed housing to which each fixed piece portion of the first and second terminals is fixed, A movable housing to which the contact portion of the second terminal is fixed, and the movable housing can be configured to be relatively displaceable by elastic deformation of the extending portions of the first and second terminals with respect to the fixed housing. .
According to this, it is possible to realize a connector having a floating function while supporting a large current application.

  According to the connector of the present invention, it is possible to realize a connector that can reduce the resistance of a terminal and can be used for a large current. In addition, a movable connector that can handle a large current can be realized. Furthermore, it is possible to realize a connector having a space-saving movable mechanism using terminals having a low resistance and a low spring coefficient. Therefore, it is possible to realize a connector with high connection reliability and high connection safety in applications that require high current handling such as in-vehicle devices.

The perspective view which shows the front of the connector of one Embodiment, a right side, and a plane. The perspective view which shows the back surface, left side surface, and plane of the connector of FIG. The front view of the connector of FIG. The rear view of the connector of FIG. The top view of the connector of FIG. The bottom view of the connector of FIG. The right view of the connector of FIG. FIG. 3 is a sectional view taken along line SA-SA. FIG. 3 is a sectional view taken along line SB-SB. 3 is a sectional view taken along the line SC-SC. The perspective view which shows the front of the housing main body of FIG. 1, a right side, and a plane. The perspective view which shows the back surface, left side surface, and plane of the housing main body of FIG. The front view of the housing main body of FIG. The rear view of the housing main body of FIG. The top view of the housing main body of FIG. The bottom view of the housing main body of FIG. The right view of the housing main body of FIG. The perspective view which shows the front, right side, and plane of the retainer of FIG. The perspective view which shows the back surface, left side surface, and plane of the retainer of FIG. The front view of the retainer of FIG. The rear view of the retainer of FIG. The right view of the retainer of FIG. The top view of the retainer of FIG. The bottom view of the retainer of FIG. The perspective view which shows the front of the 1st terminal of FIG. 1, a right side, and a plane. The figure which shows the 1st terminal of FIG. 1, (a) is a front view, (b) is a rear view. The figure which shows the 1st terminal of FIG. 1, (a) is a top view, (b) is a bottom view. The right view of the 1st terminal of FIG. The perspective view which shows the front of the 2nd terminal of FIG. 1, a right side, and a plane. The figure which shows the 2nd terminal of FIG. 1, (a) is a front view, (b) is a rear view. The figure which shows the 2nd terminal of FIG. 1, (a) is a top view, (b) is a bottom view. The right view of the 2nd terminal of FIG. The perspective view which shows the front surface, right side, and plane which show the arrangement | positioning relationship between a 1st terminal and a 2nd terminal, omitting the housing of FIG. The perspective view which shows the back surface, the left side surface, and plane which show the arrangement | positioning relationship between a 1st terminal and a 2nd terminal, omitting the housing of FIG. FIGS. 2A and 2B are diagrams illustrating a positional relationship between a first terminal and a second terminal with the housing of FIG. 1 omitted, where a part view (a) is a front view and a part view (b) is a rear view. FIGS. 2A and 2B are diagrams illustrating an arrangement relationship between a first terminal and a second terminal, omitting the housing of FIG. 1, in which FIG. 1A is a plan view and FIG. 1B is a bottom view. The right view which abbreviate | omits the housing of FIG. 1 and shows the arrangement | positioning relationship between a 1st terminal and a 2nd terminal. Explanatory drawing which shows the mounting process of the connector of FIG. 1 by planar view. Explanatory drawing which shows the connection process of the connector of FIG. 1 by the perspective from the front, the right side, and a plane.

  Hereinafter, one embodiment of a connector of the present invention is described based on a drawing. In the following embodiments, a connector 1 having a floating function is described as an example in which a connection object and a substrate provided in an in-vehicle device are conductively connected.

  In the present specification, claims, and drawings, the width direction along the longitudinal direction of the connector 1 shown in FIG. 1 is the X direction, the longitudinal direction along the short side is the Y direction, and the height of the connector perpendicular to the board surface. In the following description, the vertical direction is the Z direction, the planar side of the connector 1 in the height direction Z is “upper side”, and the bottom side of the connector 1 is “lower side”.

Embodiment [FIGS. 1 to 39]:
As shown in FIGS. 1 to 39, the connector 1 is an edge connector, and includes a housing 3 mounted on the end of the substrate 2, and a terminal portion held by the housing 3 and connected to the flat conductor 4 of the electronic component. 5. In this embodiment, a bus bar is shown as an example of a “flat conductor”.

〔housing〕
As shown in FIGS. 1 to 7 and FIGS. 11 to 24, the housing 3 is made of an insulating resin and is provided in a substantially rectangular parallelepiped shape as a whole, and the height direction Z is the width direction X and the front-rear direction Y of the connector 1. It is formed smaller than. The housing 3 includes a housing body 6 as a “movable housing” and a retainer 7 as a “fixed housing”. The retainer 7 has a space 8 inside, and the housing body 6 is accommodated in the space 8.

[Housing body]
As shown in FIGS. 11 to 17, the housing body 6 includes an insertion port 6 b for the flat conductor 4, a receiving hole 6 c, a communication hole 6 d, a locking portion 6 e, and a drop-off preventing portion 6 f.
The insertion port 6b is provided in the front surface portion 6a1 of the housing body 6 perpendicular to the substrate 2, and is formed in a vertically long shape. And the flat conductor 4 of an electronic component can be inserted in this insertion port 6b. In this embodiment, three insertion openings 6b are provided, and one flat conductor 4 can be inserted into each insertion opening 6b. The insertion opening 6 b is provided along the height direction Z of the connector 1 and is formed larger than the outer periphery of the flat conductor 4. The flat conductor 4 is inserted into the insertion opening 6 b so as to be parallel to the surface direction of the substrate 2 while maintaining the plate surface in the direction perpendicular to the substrate 2.

  The accommodation hole 6 c is formed in communication with the insertion opening 6 b and accommodates the terminal portion 5. The flat conductor 4 inserted from the insertion port 6b is electrically connected to the terminal portion 5 through the accommodation hole 6c. In addition, partition walls 6c1 and 6c1 are provided on the sides in the width direction X of the accommodation hole 6c. When a plurality of the accommodation holes 6c are provided along the width direction X, the accommodation holes 6c can be separated by the partition wall 6c1. Further, on the inner wall of each partition wall 6c1 and side surface portion 6a3, a ridge portion 6c2 is formed along the front-rear direction Y toward the inside of the accommodation hole 6c. The terminal portion 5 accommodated in the accommodation hole 6c can be fixed to the housing main body 6 by the protruding portion 6c2.

  The communication hole 6d is formed on the side of the insertion port 6b. The plurality of communication holes 6d are integrated inside the housing body 6 and penetrate the housing body 6 rearward. In the present embodiment, two pairs of the communication holes 6d are formed on both sides of the insertion port 6b. The communication holes 6d are also formed above and below the front surface portion 6a1, and a total of 16 communication holes 6d are provided. A projecting locking portion 6 e is formed on the upper surface portion 6 a 2 of the housing body 6. The side surface portions 6a3 and 6a3 are formed with protruding drop-off prevention portions 6f and 6f.

[Retainer]
As shown in FIGS. 18 to 24, the retainer 7 includes an insertion hole 7b, an accommodation space 7c, a locking hole 7d, a recess 7e, a fixing groove 7f, and a substrate fixing part 7g.
The insertion hole 7b is provided in the rear part in the front-rear direction Y, and the terminal part 5 can be inserted when the connector 1 is assembled. In the present embodiment, three are formed, and one terminal portion 5 is inserted into each insertion hole 7b.

The accommodation space 7 c is formed continuously with the accommodation hole 6 c of the housing body 6 in a state where the retainer 7 is fixed to the housing body 6. The accommodation space 7c is partitioned by a partition wall 7c1, and the terminal portion 5 is inserted into each accommodation space 7c. In this embodiment, three accommodation spaces 7c are formed, and one terminal portion 5 is inserted into each accommodation space 7c.
The locking hole 7d is formed in the upper portion of the retainer 7, and the locking portion 6e of the movable housing 3 can be locked at the edge.
The recess 7e is a side surface of the retainer 7 and is provided on the front side in the front-rear direction Y. The recess 7e can receive the drop-off preventing portion 6f when the housing body 6 is accommodated in the space 8 of the retainer 7.
The fixing groove 7f is provided behind the retainer 7 in the front-rear direction Y, and can fix the terminal portion 5.

  The board fixing portion 7g is provided on the side surface portions 7a1 and 7a1 of the retainer 7 along the front-rear direction Y. The board fixing portion 7g is formed to protrude from the side surface portions 7a1 and 7a1 in both directions in the width direction X of the connector 1.

(Terminal part)
As shown in FIGS. 8 to 10 and FIGS. 25 to 37, the terminal portion 5 includes a first terminal 9 and a second terminal 10. The first terminal 9 and the second terminal 10 are each formed by partially bending a flat metal plate. Each of the first terminal 9 and the second terminal 10 is connected to the same flat conductor 4 at one end side and is conductively connected to the same substrate contact 2b of the substrate 2 at the other end side.

[First terminal]
As shown in FIGS. 25 to 28, the first terminal 9 includes a contact portion 9a, a base portion 9b, a spring portion 9c, a fixed piece portion 9d, and a board connecting portion 9e.

  The contact portion 9 a includes contact arms 9 a 1 and 9 a 2 that are provided along the front-rear direction Y and are electrically connected to the flat conductor 4. A pair of contact arms 9a1 and 9a2 are provided to face each other. The contact arms 9a1 and 9a2 are formed with substantially the same length. Further, the contact arms 9a1 and 9a2 are provided so as to extend in a cantilever shape from the base portion 9b, and are formed so as to incline toward each other toward the contact arms 9a1 and 9a2 facing each other from the base portion 9b side to the free end side.

  Bending portions 9a3 and 9a3 are provided on the free ends of the contact arms 9a1 and 9a2, and are inclined toward the direction away from the opposing contact arms 9a2 and 9a1 with the bending portion 9a3 as a boundary. Further, in the contact arms 9a1 and 9a2, the bent portion 9a3 of the pair of contact arms 9a1 on the upper side in the height direction Z is located on the front side in the front-rear direction Y with respect to the bent portion 9a3 of the pair of contact arms 9a2. . The contact portion 9a of the first terminal 9 is electrically connected to the flat conductor 4 mainly at the bent portion 9a3. The gap between the bent portions 9 a 3 facing each other is formed narrower than the plate thickness of the flat conductor 4. The flat conductor 4 inserted into the housing hole 6c of the housing body 6 from the insertion opening 6b first contacts the contact arm 9a1, and then contacts the contact arm 9a2. At that time, the opposing contact arms 9a1 and 9a2 are elastically deformed in a direction away from each other, and enter the receiving hole 6c while expanding the gap. The flat conductor 4 thus inserted into the accommodation hole 6 c comes into contact with the bent portion 9 a 3 of the contact arms 9 a 1 and 9 a 2 and is electrically connected to the substrate 2 through the first terminal 9.

  The base portion 9b has base end portions 9b1 of contact arms 9a1 and 9a2 and a connecting portion 9b2. The base end portion 9b1 is provided continuously to the contact portion 9a. A locking portion 9b3 is formed at the lower edge of the base end portion 9b1. The connecting portion 9b2 is continuously provided on the upper end side of the base end portion 9b1, and connects the base end portions 9b1 facing each other.

The spring portion 9c has an outward bent portion 9c1, a folded portion 9c2, and a movable portion 9c3. In the present embodiment, the spring portion 9c extends from the base end portions 9b1 and 9b1 one by one.
The outward bending portion 9c1 extends from the rear end side in the front-rear direction Y at the base end portion 9b1 of the base portion 9b toward the rear, and is bent toward the outside in the width direction X of the connector 1 from the front side to the rear side. The
The folded portion 9c2 is continuously provided on the rear end side of the outward bent portion 9c1, and first extends backward from the outward bent portion 9c1 side, then descends downward in the height direction Z of the connector 1, and then bends forward. It is a shape to return.

The movable portion 9c3 is formed in a flat plate shape and includes an inclined portion 9c4, a bent portion 9c5, a straight portion 9c6, and a rear end portion 9c7.
Since the movable part 9c3 is formed in a flat plate shape, for example, the cross-sectional area of the terminal can be increased as compared with the case of a thin shaft shape. Accordingly, it is possible to reduce the resistance in the movable portion 9c3. In addition, since the movable portion 9c3 is formed in a flat plate shape, the longer the spring length is, the softer the movable portion 9c3 becomes, and the elastic portion is easily deformed in the thickness direction. The movable portion 9 c 3 is accommodated in the accommodating space 7 c of the retainer 7 when the first terminal 9 is held by the housing 3. However, the smaller the connector 1 is, the narrower the accommodating space 7c of the retainer 7 becomes, so it becomes difficult to provide a long spring length.

Therefore, in the present embodiment, the movable portion 9c3 has an inclined portion 9c4 and a linear portion 9c6 that are substantially linear, and these are connected by a bent portion 9c5. The inclined portion 9c4 is formed from the front end side and the lower end side to the rear end side and the lower end side of the accommodation space 7c. The straight portion 9c6 is formed from the rear end side and the lower end side to the rear end side and the upper end side of the accommodation space 7c. By doing so, it is possible to make the spring length long by making the best use of the accommodation space 7c, and it is possible to provide the movable portion 9c3 that has a low spring coefficient and is easily deformed in the plate thickness direction.
Moreover, since the spring part 9c has the outward bending part 9c1, the distance between the opposing spring parts 9c, 9c and the board connecting parts 9e, 9e is set wider than the distance between the opposing base end parts 9b1. .

  The fixed piece portion 9d is provided continuously to the rear end portion 9c7. And after extending toward the upper direction in the height direction Z of the connector 1 from the upper end part of the rear-end part 9c7, it is extended and formed in the front direction in the front-back direction Y. A locking projection 9d1 is formed on the lower edge of the fixed piece 9d.

  The board connecting portion 9e is provided extending along the front-rear direction Y from the rear end portion of the rear end portion 9c7 toward the rear. Further, the board connecting portion 9e has a fixed protrusion 9e1. The fixed protrusion 9e1 is provided at a lower portion on the rear end side of the board connecting portion 9e, and is connected to the board contact 2b by being soldered.

[Second terminal]
As shown in FIGS. 29 to 32, the second terminal 10 includes a contact portion 10a, a base portion 10b, a spring portion 10c, a fixed piece portion 10d, and a board connecting portion 10e. The second terminal 10 is formed so that the height direction Z of the first terminal 9 and the connector 1 is substantially the same. Also, the length in the front-rear direction Y is formed to be approximately the same.

  The contact portion 10 a includes contact arms 10 a 1 and 10 a 2 that are provided along the front-rear direction Y and are electrically connected to the flat conductor 4. A pair of contact arms 10a1 are provided to face each other. The contact arms 10a1 and 10a2 are formed with substantially the same length. Further, the contact arms 10a1 and 10a2 are provided so as to extend in a cantilever shape from the base 10b, and are formed so as to be inclined in a direction approaching the contact arms 10a1 and 10a2 facing each other from the base 10b side to the free end side.

  A bent portion 10a3 is provided on the free end side of the contact arms 10a1 and 10a2, and is inclined toward the direction away from the opposed contact arms 10a1 and 10a2 with the bent portion 10a3 as a boundary. Further, in the contact arms 10a1 and 10a2, the bent portion 10a3 of the lower pair of contact arms 10a1 in the height direction Z is positioned on the front side in the front-rear direction Y with respect to the bent portion 10a3 of the other pair of contact arms 10a2. doing. The contact portion 10a of the second terminal 10 is electrically connected to the flat conductor 4 mainly at the bent portion 10a3. The gap between the bent portions 10 a 3 facing each other is formed narrower than the plate thickness of the flat conductor 4. The flat conductor 4 inserted into the housing hole 6c of the housing main body 6 from the insertion port 6b first contacts the contact arm 10a1, and then contacts the contact arm 10a2. At that time, the contact arm 10a1 facing each other is elastically deformed in a direction away from each other, and enters the accommodation hole 6c while expanding the gap. The flat conductor 4 thus inserted into the accommodation hole 6 c comes into contact with the bent portion 10 a 3 of the contact arm 10 a 1 and is conductively connected to the substrate 2 through the second terminal 10.

  In the present embodiment, the contact portion 10a of the second terminal 10 is higher than the contact portion 9a of the first terminal 9 when the first terminal 9 and the second terminal 10 are arranged in parallel. It is provided at a lower position in Z.

  The base portion 10b has base end portions 10b1 of contact arms 10a1 and 10a2 and a connecting portion 10b2. The base end portion 10b1 is provided continuously with the contact portion 10a. A locking portion 10b3 is formed on the upper edge of the base end portion 10b1. The connecting portion 10b2 is continuously provided on the lower end side of the base end portion 10b1, and connects the base end portions 10b1 facing each other.

The spring portion 10c includes an inwardly bent portion 10c1 and a movable portion 10c3. In the present embodiment, the spring portion 10c extends from the base end portions 10b1 and 10b1 one by one.
The inwardly bent portion 10c1 extends from the rear end side in the front-rear direction Y at the base end portion 10b1 of the base portion 10b toward the rear, and is bent toward the inner side in the width direction X from the front side to the rear side.

The movable portion 10c3 is formed in a flat plate shape, and includes a straight portion 10c4, a bent portion 10a5, an inclined portion 10c6, a bent portion 10a7, and a straight portion 10c8.
The straight portion 10c4, the inclined portion 10c6, and the straight portion 10c8 are all linear, and are connected by the bent portions 10a5 and 10a7. The straight portion 10c4 is continuous with the base end portion 10b1 on the front end side of the accommodation space 7c, and is formed from there to the rear end side of the accommodation space 7c. The inclined portion 10c6 is formed from the position on the rear end side and the lower end side of the accommodation space 7c to the front end side and the upper end side of the accommodation space 7c. Further, the straight portion 8 is formed from the front end side to the rear end side of the accommodation space 7c. By doing so, similarly to the movable portion 10c3 of the first terminal 9, the spring length can be provided long by making maximum use of the accommodation space 7c, and the movable portion is easily elastically deformed in the plate thickness direction with a low spring coefficient. 10c3.

  The movable portion 10c3 of the second terminal 10 is also formed in a flat plate shape as in the case of the movable portion 10c3 of the first terminal 9. Therefore, for example, since the cross-sectional area of the terminal can be increased as compared with the case of the thin shaft shape, the resistance of the movable portion 10c3 can be reduced. Further, since the spring portion 10c has the inwardly bent portion 10c1, the interval between the opposing spring portions 10c and 10c and the substrate connection portions 10e and 10e is set to be narrower than the interval between the base end portions 10b1 and 10b1 of the base portion 10b. Has been.

  The fixed piece portion 10d is continuously provided on the upper end portion of the linear portion 10c8. And after extending | stretching upwards in the height direction Z of the connector 1, it is extended and formed in the front direction in the front-back direction Y. Further, the fixed piece portion 10d is formed to be curved outward from the upper end of the board connecting portion 10e in the width direction X. A locking projection 10d1 is formed on the outer edge of the fixed piece 10d in the width direction X.

  The board connecting portion 10e is provided extending along the front-rear direction Y from the rear end portion of the spring portion 10c to the rear. Further, the board connecting part 10e has a fixed protrusion 10e1. The fixed protrusion 10e1 is provided at a lower part on the rear end side of the board connecting part 10e, and is connected to the board contact 2b by being soldered.

[Description of how to assemble the terminal part into the housing]
Next, a method for assembling the terminal portion 5 to the housing 3 will be described. First, the housing body 6 is accommodated in the space 8 of the retainer 7, and the locking portion 6 e of the housing body 6 is locked in the locking hole 7 d of the retainer 7. At that time, the drop-off preventing portion 6 f of the housing body 6 is inserted into the concave portion 7 e of the retainer 7. Accordingly, the retainer 7 is fixed to the housing body 6, and an accommodation space 7 c that communicates with the accommodation hole 6 c of the housing body 6 is formed inside the retainer 7.

  Subsequently, the first terminal 9 is inserted into the accommodation space 7c from the insertion hole 7b of the retainer 7, and further pushed forward, whereby the contact portion 9a of the first terminal 9 is inserted into the accommodation hole 6c of the housing body 6. The In that case, the contact part 9a is inserted into the upper part of the protrusion 6c2 of the housing body 6. The base portion 9b of the first terminal 9 can be fixed to the housing body 6 by engaging the engaging portion 9b3 provided at the lower edge of the base end portion 9b1 of the base portion 9b with the upper edge of the protruding portion 6c2. it can. At that time, the fixing piece 9d of the board connecting portion 9e is press-fitted into the fixing groove 7f of the retainer 7. The fixing piece 9d is provided with a locking projection 9d1, and the first terminal 9 can be fixed to the retainer 7 by engaging the locking projection 9d1 with the inner wall of the fixing groove 7f. .

Next, the second terminal 10 is inserted into the accommodation space 7 c through the insertion hole 7 b of the retainer 7, and further pushed forward, thereby inserting the contact portion 10 a of the second terminal 10 into the accommodation hole 6 c of the housing body 6. To do. In that case, the contact part 10a is inserted into the lower part of the protrusion 6c2 of the housing body 6. The base portion 9b of the first terminal 9 can be fixed to the housing body 6 by engaging the engaging portion 10b3 provided at the upper edge of the base end portion 10b1 of the base portion 10b with the lower edge of the protruding portion 6c2. it can. At that time, the fixed piece 10d of the board connecting portion 10e is press-fitted into the fixed groove 7f of the retainer 7.
The fixing piece 10d is provided with a locking projection 9d1, and the second terminal 10 can be fixed to the retainer 7 by engaging the locking projection 9d1 with the inner wall of the fixing groove 7f. .

As described above, the spring portion 9c of the first terminal 9 has the outward bent portion 9c1 that curves outward from the front side to the rear side in the width direction X, and the distance between the opposing spring portions 9c and 9c and the substrate The interval between the connecting portions 9e and 9e is formed larger than the interval between the base end portions 9b1 and 9b1 facing the base portion 9b. On the other hand, the spring portion 10c of the second terminal 10 has an inwardly bent portion 10c1 that curves inward in the width direction X from the front side to the rear side, and the distance between the opposing spring portions 10c and 10c is as follows. The space | interval of the board | substrate connection parts 10e and 10e is formed narrower than the space | interval of the base end parts 9b1 and 9b1 which the base part 9b opposes.
Therefore, when the second terminal 10 is attached to the housing 3, the contact portion 10a is inserted between the opposing spring portions 9c and 9c and the board connection portions 9e and 9e of the first terminal 9 fixed to the housing 3. And inserted into the receiving hole 6c. With the second terminal 10 fixed to the housing 3, the spring portions 10 c and 10 c are accommodated between the opposing spring portions 9 c and 9 c of the first terminal 9. Similarly, the board connection portions 10 e and 10 e of the second terminal 10 are accommodated between the board connection portions 9 e and 9 e facing the first terminal 9.

  Further, in a state where the first terminal 9 and the second terminal 10 are attached to the housing 3, the contact portions 9a and 10a are juxtaposed along the vertically long insertion port 6b.

[Explanation of usage]
First, a method for mounting the connector 1 on the board 2 will be described. As shown in FIGS. 38 and 39, the connector 1 can be mounted on the end of the substrate 2. At the end of the substrate 2, a notch 2 a is formed along the outer shape of the side surface portions 7 a 1 and 7 a 1 and the rear surface portion 7 a 2 of the retainer 7. Then, the connector 1 is inserted into the notch 2a from the rear surface portion 7a of the retainer 7. In that case, the board | substrate fixing | fixed part 7g and the board | substrate connection parts 9e and 10e of the 1st terminal 9 and the 2nd terminal 10 are arrange | positioned on the surface side of the board | substrate 2. FIG. The board fixing part 7g can be fixed to the board 2 using a reinforcing metal fitting or an adhesive. After the connector 1 is fixed to the board 2, the board connecting portions 9 e and 10 e of the first terminal 9 and the second terminal 10 are soldered to the board 2.

  In a state where the connector 1 is fixed to the substrate 2, the front surface portion 6 a 1 of the housing body 6 is provided perpendicular to the substrate 2. For example, when the flat terminal surfaces of the contact portions 9a and 10a are arranged side by side in parallel with the substrate 2, in order to reduce the size of the connector 1 along the arrangement direction of the terminals 9 and 10, each terminal 9 and 10 has a plate width. Need to shorten in the direction. However, if the terminal is shortened in such a manner, the cross-sectional area of the terminal is reduced and the resistance is increased. Therefore, the vertically long insertion opening 6b provided in the housing body 6 and into which the flat conductor 4 is inserted is provided so that the longitudinal direction is perpendicular to the substrate 2, and the contact portion 9a of the first terminal 9 and the The flat terminal surfaces of the contact portion 10a of the second terminal 10 are arranged vertically along the insertion opening 6b. By doing so, it is possible to reduce the resistance by increasing the cross-sectional area of each terminal 9, 10 without changing the size in the plate width direction. In this way, it is possible to cope with a large current application while downsizing.

The flat conductor 4 can be inserted into the insertion port 6 b so that the plate surface is perpendicular to the substrate 2. The bent portion 9 a 3 in the contact arm 9 a 1 on the upper side of the first terminal 9 and the bent portion 10 a 3 in the contact arm 10 a 1 on the lower side of the second terminal 10 are arranged at the same position in the front-rear direction Y of the connector 1. In contrast, the bent portion 9a3 in the lower contact arm 9a2 of the first terminal 9 and the bent portion 10a3 in the upper contact arm 10a2 of the second terminal 10 are also arranged at the same position in the front-rear direction Y. However, these contact arms 9a2 and 10a2 are arranged behind the contact arms 9a1 and 10a1.
Therefore, when the flat conductor 4 is inserted into the housing body 6 through the insertion opening 6b, the contact arm 9a1, 10a1 having the bent portions 9a3, 10a3 on the front side is first contacted, and then the contact point having the bent portions 9a3, 10a3 on the rear side. It contacts the arms 9a2 and 10a2. Thus, by providing the contact arms 9a1, 9a2, 10a1, 10a2 where the positions of the bent portions 9a3, 10a3 are different, the bent portions 9a3, 10a3 that are in contact with the flat conductor 4 at the same time are reduced. The resistance when displacing can be reduced. Therefore, the flat conductor 4 can be connected to the connector 1 with a smaller force.

  When the flat conductor 4 and the connector 1 are conductively connected, the terminal portion 5 generates heat. The amount of generated heat increases as the current value increases. This heat is radiated to the outside of the connector 1 through a locking hole 7d formed in the upper part of the retainer 7 and a communication hole 6d.

[Description of floating structure]
As described above, the base portions 9 b and 10 b are fixed to the housing body 6, and the board connecting portions 9 e and 10 e are fixed to the retainer 7 and soldered to the board 2. On the other hand, the retainer 7 has a board fixing part 7g, and here, the connector 1 can be fixed to the board 2 using a reinforcing metal fitting or an adhesive. The connector 1 has spring portions 9c and 10c on the first terminal 9 and the second terminal 10, respectively.

  In a state where the housing main body 6 is accommodated in the retainer 7, a gap L is formed between the side surface portion 7 a 1 of the retainer 7 and the inner wall of the side surface portion 6 a 3 of the housing main body 6. When vibration is applied to the connector 1 or the substrate 2, the spring portions 9c and 10c are elastically deformed. Then, the contact portions 9a and 10a of the first terminal 9 and the second terminal 10 in the free state are elastically deformed accordingly, and the housing body 6 is moved in the width direction X by the gap L with respect to the retainer 7. The relative displacement can be achieved. Even if the housing body 6 is displaced relative to the retainer 7 in this manner, the drop-out preventing portion 6f of the housing body 6 is inserted into the recess 7e of the retainer 7, so that the housing body 6 is moved in the height direction Z. Even if it is displaced, it can be prevented from dropping from the retainer 7.

Further, the flat conductor 4 inserted from the insertion port 6b first contacts the bent portions 9a3 and 10a3 at the distal end portion 4a, and further contacts further at the regular contact position 4b. The distance in the front-rear direction Y from the front end portion 4 a of the flat conductor 4 to the regular contact position 4 b is secured as a movable margin of the flat conductor 4. Therefore, when vibration is applied to the substrate 2 or the connector 1, the flat conductor 4 is moved in the front-rear direction Y while being in contact with the bent portions 9a3, 10a3 at any position from the normal contact position 4b to the tip end portion 4a. Can move along.
Furthermore, the length of the insertion opening 6b in the height direction Z is formed longer than the length of the connector 1 in the length direction Z. In the height direction Z of the insertion opening 6b, a portion exceeding the length in the height direction Z of the flat conductor 4 is secured as a movable margin. Therefore, the flat conductor 4 can be displaced in the height direction Z even when the flat conductor 4 is inserted into the insertion slot 6 b and is in contact with the terminal portion 5.
Thereby, even if vibration occurs, the flat conductor 4 can be displaced relative to the connector 1 in the width direction X, the front-rear direction Y, and the height direction Z. Therefore, the connector 1 can easily maintain the conductive connection of the substrate 2 even if vibration occurs.

[Description of action and effect]
Operations and effects of the present embodiment excluding those already described will be described.
As shown in FIGS. 33 and 37, the contact portion 9 a of the first terminal 9 and the contact portion 10 a of the second terminal 10 are arranged in parallel along the height direction Z.
The flat conductor 4 inserted into the housing hole 6 c of the housing body 6 from the insertion opening 6 b is connected to the two contact arms 9 a 1 and 9 a 2 of the first terminal 9 and the two contact arms 10 a 1 and 10 a 2 of the second terminal 10. Touch. Further, by pushing the flat conductor 4 into the insertion opening 6b, the gaps between the contact arms 9a1, 9a2 and the contact arms 10a1, 10a2 facing the flat conductor 4 are expanded to come into contact with the bent portions 9a3, 10a3. Thereby, the flat conductor 4 is electrically connected to the substrate 2 via the terminal portion 5. A plurality of contact arms 9a1, 9a2, 10a1, 10a2 are sequentially brought into contact with each other, and finally, the plurality of contact arms are brought into contact with the flat conductor 4, thereby reducing the current value of each contact arm, resulting in a large current. It can be made to correspond. As a result, the amount of heat generated from the contact arm can be reduced as compared with the case where the current is concentrated in, for example, one contact arm without providing a plurality of contact arms.

  Further, the spring portions 9c and 10c of the first terminal 9 and the second terminal 10 are provided to be branched from the base portions 9b and 10b, respectively. As a result, the spring coefficient can be lowered to facilitate elastic deformation. In addition, the current flowing from one flat conductor 4 to the terminal portion 5 can be passed through the four spring portions, and the current value flowing through the spring portions 9c and 10c can be reduced to cope with a large current. As a result, the amount of heat generated from the spring portion can be reduced as compared with the case where the current is concentrated in, for example, one spring portion.

  Moreover, the connector 1 can be reduced in the width direction X by inserting the spring portion 10 c of the second terminal 10 inside the spring portion 9 c of the branched first terminal 9.

  Furthermore, the housing 3 holds the first terminal 9 and the second terminal 10 in parallel so that the flat terminal surface is along the vertical direction perpendicular to the surface of the substrate 2, thereby providing a flat terminal surface. The cross-sectional areas of the terminals 9 and 10 can be made larger while the connectors 1 are downsized in the width direction X than when the connectors are arranged side by side. Therefore, each terminal 9, 10 can be reduced in resistance.

  In addition, the length of the spring portion 9c of the first terminal 9 and the length of the spring portion 10c of the second terminal 10 are approximately the same. By doing so, the resistance values of the first terminal 9 and the second terminal 10 can be made substantially the same, and the current values of the terminals 9 and 10 can be made substantially the same. Thereby, the heat_generation | fever of the 1st terminal 9 and the 2nd terminal 10 can be suppressed to the same extent, and it can suppress that any one terminal becomes too high temperature rather than the other terminal.

As described above, the contact portion 9a of the first terminal 9 is inserted above the protrusion 6c2 in the accommodation hole 6c, and the contact portion 10a of the second terminal 10 is lower than the protrusion 6c2 in the accommodation hole 6c. Inserted in the side. Accordingly, the contact portions 9 a and 9 a are arranged along the height direction Z of the connector 1. Thereby, each bending part 9a3, 10a3 is also arrange | positioned along the said height direction Z. FIG.
Therefore, with the first terminal 9 and the second terminal 10 fixed to the housing 3, the contact arms 9a1 and 9a2 of the first terminal 9 and the contact arms 10a1 and 10a2 of the second terminal 10 are in the height direction Z. Arranged along.
In this way, the connector 1 can be made compact in the width direction X as compared with the case where the terminal surface of the first terminal 9 and the terminal surface of the second terminal 10 are arranged in parallel with the substrate 2, for example. it can.

  According to the connector 1 according to the present embodiment, it is possible to realize the connector 1 which can realize the low resistance of the terminal portion 5 and can cope with the use of a large current. Moreover, the connector 1 which corresponds to a large current and has a floating structure can be realized. Furthermore, it is possible to realize the connector 1 having a space-saving floating structure with the terminal portion 5 having a low resistance and a low spring coefficient. Therefore, it is possible to realize the connector 1 having high connection reliability and high connection safety in applications that require high current handling such as in-vehicle devices.

Variation:
In the present embodiment, the connector 1 which is an edge connector and can be horizontally fitted is shown. However, the connector 1 can be mounted at a position other than the end of the substrate 2. Moreover, it can also be set as the connector 1 in which vertical fitting is possible. Thereby, the freedom degree of the mounting structure to the board | substrate 2 can be raised more.

  In the present embodiment, the example in which the locking portion 6e is provided in the housing body 6 and the locking hole 7d is formed in the retainer 7 is shown. However, on the contrary, the locking portion 6 e can be provided in the retainer 7 and the locking hole 7 d can be formed in the housing body 6. Further, in the present embodiment, the example in which the drop-off preventing portion 6 f is provided in the housing body 6 and the concave portion 7 e is formed in the retainer 7 has been described. On the other hand, the drop prevention part 6 f may be provided in the retainer 7 and the recess 7 e may be formed in the housing body 6.

  In the present embodiment, the connector 1 includes the three terminal portions 5, and the flat conductor 4 is connected to each terminal portion 5 one by one. And the housing main body 6 of the connector 1 has the insertion port 6b and the three accommodation holes 6c, and the retainer 7 showed the example which has the accommodation space 7c and the three insertion holes 7b. However, the number of terminal portions 5 included in the connector 1 can be increased or decreased according to the number of flat conductors 4 to which the connector 1 is connected. The number of terminal portions 5 to which each flat conductor 4 is conductively connected is not limited to one and can be increased or decreased. And according to the number of the flat conductors 4 and the number of terminal portions 5, the number of the insertion ports 6b and the accommodation holes 6c that the housing body 6 has, and the number of the accommodation spaces 7c and the insertion holes 7b that the retainer 7 have are also increased or decreased. Can do.

  In the present embodiment, each of the contact portions 9a, 10a of the first terminal 9 and the second terminal 10 has a pair of contact arms 9a1, 9a2, or 10a1, 10a2 each having an arm shape. An example having four contact arms was shown. On the other hand, it may have only two contact arms or three or more pairs. In the case of having only two contact arms and having a contact arm that is wider in the plate surface direction, the contact area with the flat conductor 4 can be increased, and the connector 1 can handle a larger current. Can do. Further, for example, when three or more pairs of narrower contact arms are provided, heat generation can be reduced by reducing the current value divided to each contact arm. And since it becomes easy to make each contact arm follow the surface shape of the flat conductor 4, a contact arm and the flat conductor 4 can be made to contact reliably.

DESCRIPTION OF SYMBOLS 1 Connector 2 Board | substrate 2a Notch 2b Board contact 3 Housing 4 Flat conductor 4a Tip part 4b Regular contact position 5 Terminal part 6 Housing main body 6a1 Front surface part 6a2 Upper surface part 6a3 Side surface part 6b Insertion port 6c Housing hole 6c1 Partition wall 6c2 Projection Shaped part 6d Communication hole 6e Locking part 6f Drop-off prevention part 7 Retainer 7a1 Side face part 7a2 Rear surface part 7b Insertion hole 7c Storage space 7c1 Partition 7d Locking hole 7e Recess 7f Fixing groove 7g Substrate fixing part 8 Space 9 First terminal 9 Contact part 9a1 Contact arm (upper side)
9a2 Contact arm (lower side)
9a3 bent portion 9b base portion 9b1 base end portion 9b2 connecting portion 9b3 locking portion 9c spring portion 9c1 outward bent portion 9c2 folded portion 9c3 movable portion 9c4 inclined portion 9c5 bent portion (spring portion)
9c6 Linear portion 9c7 Rear end portion 9d Fixed piece portion 9d1 Locking protrusion 9e Substrate connecting portion 9e1 Fixed protrusion 10 Second terminal 10a Contact portion 10a1 Contact arm (lower side)
10a2 Contact arm (upper side)
10a3 bent portion 10b base portion 10b1 base end portion 10b2 connecting portion 10b3 locking portion 10c spring portion 10c1 inward bent portion 10c3 movable portion 10c4 linear portion 10c5 bent portion (spring portion)
10c6 Inclined part 10c7 Bent part 10c8 Straight line part 10d Fixed piece part 10d1 Locking protrusion 10e Substrate connecting part 10e1 Fixed protrusion L Gap

Claims (8)

A flat first terminal and a second terminal, each having one end connected to the same flat conductor to be connected and the other end connected to the same substrate contact of the substrate;
A housing that holds the first and second terminals in parallel so that the flat terminal surface is along a vertical direction perpendicular to the surface of the substrate;
Each of the first and second terminals is
A contact portion that is conductively connected to the flat conductor;
An extension part in which a plurality of flat terminal pieces extending from the contact part and extending are arranged in parallel;
A board connecting portion that is electrically connected to the board contact at the end side of each extending portion.   The connector according to claim 1, wherein an extension portion of the second terminal is disposed between the extension portions where the first terminal branches. The housing has an insertion port for the flat conductor along the longitudinal direction;
The connector according to claim 1 or 2, wherein the contact portion of the first terminal and the contact portion of the second terminal are arranged vertically along the vertical direction.   The connector according to any one of claims 1 to 3, wherein the housing has a communication hole communicating with at least one of the contact portion of the first terminal and the contact portion of the second terminal inside the housing.   The connector according to any one of claims 1 to 4, wherein the extending portions of the first and second terminals have a movable piece portion in which a straight portion and a bent portion are combined. The connector according to any one of claims 1 to 5, wherein the contact portions of the first and second terminals have a plurality of arm-shaped contact portions.   The connector according to any one of claims 1 to 6, wherein the housing has an engaging portion that engages with the surface of the substrate in a state where the housing overlaps the thickness of the substrate in the vertical direction. The first and second terminals have fixed pieces to the housing;
The housing is
A fixed housing to which the respective fixed pieces of the first and second terminals are fixed;
A movable housing to which the contact portions of the first and second terminals are fixed,
The connector according to any one of claims 1 to 7, wherein the movable housing is relatively displaceable with respect to the fixed housing by elastic deformation of the extending portions of the first and second terminals.

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