JP4910895B2 - Card edge connector connection structure - Google Patents

Description

  The present invention relates to a card edge connector connection structure comprising a card edge type substrate and a connector having an opening into which the substrate is inserted.

  Conventionally, as this type of card edge connector connection structure, for example, the one shown in FIG. 16 is known. 16A and 16B are explanatory views showing a conventional card edge connector connection structure, wherein FIG. 16A is a plan view of the card edge connector, FIG. 16B is a cross-sectional view taken along the line A-A in FIG. It is sectional drawing which shows the state which the front-end | tip part of a connector terminal tends to ride on a circuit board.

As shown in FIG. 16A, a plurality of electrodes 3 are arranged at predetermined intervals on the substrate surface 1 b at the end of the card edge type circuit board 1. The connector 5 is formed in a socket type (box type) having an opening 5a at one end, and a plurality of connector terminals 4 corresponding to the electrodes 3 are arranged therein. Each connector terminal 4 is arranged side by side with the tip 4 e facing the opening 5 a of the connector 5. Each connector terminal 4 is formed in a strip shape from a conductive metal and has a spring property. As shown in FIG. 16 (b), the tip 4e of each connector terminal 4 is formed by bending downward and then folding upward, and the folded portion serves as a contact portion 4d.
Each electrode 3 of the substrate 1 is electrically connected to an electric circuit (not shown) mounted on the circuit substrate 1. In addition, a flat cable or a wire (not shown) is electrically connected to each connector terminal 4 of the connector 5, and the flat cable or wire is electrically connected to another circuit board or an electronic device. Yes.

  And as shown in FIG.16 (c), when the edge part of the circuit board 1 is inserted in the opening part 5a of the connector 5, the contact part 4d of each connector terminal 4 will run on the corresponding electrode 3, respectively, The contact part 4d of the connector terminal 4 and each corresponding electrode 3 are electrically connected. At this time, each connector terminal 4 is biased in the direction in which the tip 4e presses the surface of the electrode 3 by its own spring force, and the electrical connection state between the contact portion 4d of the connector terminal 4 and the electrode 3 is maintained. The

  By the way, in recent years, ECUs provided in electronic control devices, such as automobiles, tend to increase the number of inputs and outputs with the outside due to improvements in functions and performance. As a result, the number of connection terminals provided in a connector for electrically connecting a circuit board on which a microcomputer is mounted and a peripheral device has been increasing. For this reason, the connection area between the connector and the circuit board is increased, which hinders downsizing of the electronic control device.

Therefore, conventionally, by reducing the pitch between the connector terminals, the number of connection terminals of the connector is increased without increasing the connection area between the connector and the circuit board. 17A and 17B are explanatory views showing a conventional card edge connector connection structure, in which FIG. 17A is a plan view of the card edge connector, and FIG. 17B is a cross-sectional view taken along line BB in FIG. As shown in FIG. 17, the pitch between the connector terminals is narrower than that shown in FIG. 16, and the number of connector terminals is increased.
Japanese Patent Laying-Open No. 2005-26020 (15th paragraph, FIG. 1)

However, as a result of narrowing the pitch between the connector terminals, there is an increased risk that the connector terminals will be in contact with each other due to the bending of the connector terminals or the displacement of the connector terminal arrangement, or that the connector terminals and the electrodes will be poorly connected. There's a problem.
18A and 18B are explanatory views showing the arrangement state of the connector terminals, where FIG. 18A is an explanatory view showing a case where the connector terminals are bent in the arrangement direction (lateral direction), and FIG. 18B is an arrangement position of the connector terminals. It is explanatory drawing which shows the case where it has shifted | deviated to the direction (lateral direction). If there are connector terminals bent in the arrangement direction as in the second and fourth connector terminals 4 from the left in FIG. 18A, adjacent connector terminals may come into contact with each other. Further, as shown in FIG. 18B, if the arrangement positions of the connector terminals 4 are shifted in the arrangement direction, the connector terminals 4 and the electrodes 3 may be poorly connected.

  Accordingly, the present invention provides a card edge connector connection structure comprising a card edge type substrate and a connector having an opening into which the substrate is inserted, and there is a bending of the connector terminal or a displacement of the connector terminal arrangement position. Even so, it is an object of the present invention to realize a card edge connector connection structure in which contact between adjacent connector terminals and poor connection between the connector terminals and electrodes do not occur.

A first feature of the present invention is a socket-type connector in which a plurality of strip-like connector terminals (4) having spring properties are arranged in parallel with the tip end (4e) facing the opening (5a). (5) and a card edge type substrate (1) in which a plurality of electrodes (3) electrically connected to the connector terminals are juxtaposed at positions corresponding to the connector terminals. When the board is inserted into the opening of the connector, each connector terminal is biased toward the corresponding electrode, and each connector terminal is electrically connected to the corresponding electrode. In the connection structure, the substrate includes a plurality of grooves (2) into which the connector terminals are inserted when connecting to the connector, and a plurality of the electrodes provided in the plurality of grooves, respectively. The plurality of grooves each have an opening end (2c) having a width wider than the width in the short direction at the tip end portion of the connector terminal on the insertion side of the connector terminal, and through the opening end. Each connector terminal is guided toward the corresponding electrode and has a guide surface to be electrically connected to the electrode, and the insertion side of the connector terminal in each groove is formed to be expanded. The slopes (2d, 2d) on both sides of the expanded portion are the guide surfaces, and the end portions on the insertion side of the connector terminals on the slopes are the open ends, bottom of the groove is made is formed on the slopes of upslope toward the insertion direction from the insertion side of the connector terminal, when the substrate to the opening of the connector is inserted, each connector pin it While pressing the guide surfaces corresponding by its spring force along the guide surface is guided towards the corresponding electrode, it lies in its electrodes and is electrically connected to the structure.

When the board is inserted into the opening of the connector, the tip of the connector terminal disposed inside the connector is inserted into the groove of the board. At this time, since the width of the opening end of the groove on the insertion side of the connector terminal is wider than the width in the short direction at the tip of the connector terminal, the tip of the connector terminal is slightly bent or the connector terminal Even when the arrangement position is shifted, the tip of the connector terminal can be inserted into the groove of the substrate.
When the board is further inserted, the connector terminal is guided toward the corresponding electrode along the guide surface while pressing the corresponding guide surface by its own spring force, and is electrically connected to the electrode. . Further, since the connector terminal inserted into the groove of the board moves in the direction of the electrode while pressing the guide surface by its own spring force, there is no possibility of detachment from the groove.

That is, even a connector terminal having a bent tip portion or a dislocated position can be inserted into the groove and can be electrically connected to the corresponding electrode.
Therefore, according to the first feature of the present invention, contact between adjacent connector terminals and poor conduction between the connector terminals and the electrodes even when there is bending of the connector terminals or displacement of the connector terminal positions. It is possible to realize a card edge connector connection structure that does not occur.
In addition, each connector terminal is inserted into the groove of the board, and the connector terminals are insulated by the wall between the grooves, so that there is no possibility of contact between adjacent connector terminals. The number can be increased.

In addition, since the insertion side of the connector terminal of each groove is formed to be expanded, and both slopes on both sides of the expanded portion are the guide surfaces, respectively, the connector terminal whose tip is bent to the left or right Even if it is a connector terminal whose arrangement position is shifted to the left or right, the tip can be guided along the guide surface into the groove.
Therefore, even if the distal end of the connector terminal is bent to the left or right, or the connector terminal is shifted to the left or right, it can be reliably electrically connected to the electrode on the board. .

Moreover, since the front-end | tip part of a connector terminal rides on said slope and is induced | guided | derived to the inside of a groove | channel, resistance at the time of insertion of a connector terminal can be decreased, and it can insert smoothly.
Also, since the bottom of the groove is formed as an upward slope from the insertion side of the connector terminal to the insertion direction, the tip of the connector terminal lifts from the bottom of the groove as it goes deeper into the groove, and its own spring force Since the force which presses the bottom part of a groove | channel increases by this, the front-end | tip part of a connector terminal and an electrode can be electrically connected still more reliably.

The tip of the connector terminal that is bent or misplaced moves from one side wall inside each groove to the back of the groove along the slope formed downward, and the other side wall By being placed in a state where it is slid down toward the other side and in contact with the other side wall, bending and displacement of the arrangement position are corrected.
For this reason, the front-end | tip part of each connector terminal and the electrode arrange | positioned at the other side wall can be electrically connected reliably.

  A seventh feature of the present invention is that, in the third feature described above, electrodes (3) are respectively disposed on the first and second slopes (2a, 2b).

The second feature of the present invention is that, in the first feature described above, the electrodes (3) are respectively arranged at the bottoms of the respective grooves (2).

A connector terminal whose tip is bent to the left or right or a connector terminal whose arrangement position is shifted to either the left or right is bent as it moves toward the groove along the guide surfaces on both sides of the expanded portion. The displacement of the arrangement position is corrected and guided to the back of the groove.
For this reason, the front-end | tip part of the connector terminal guided to the back of a groove | channel can be reliably electrically connected with the electrode arrange | positioned at the bottom part of a groove | channel.

  In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

<First Embodiment>
An embodiment according to the present invention will be described with reference to the drawings. 1A and 1B are explanatory views of a card edge connector connection structure according to this embodiment, wherein FIG. 1A is a plan view, FIG. 1B is a cross-sectional view taken along the line A-A in FIG. ) Is a cross-sectional explanatory view taken along the line B-B of FIG. 2A and 2B are explanatory views of a card edge connector connection structure according to this embodiment, in which FIG. 2A is a cross-sectional view showing a state where the connector terminal is bent or the arrangement position is shifted, and FIG. 2B is a connector terminal. It is sectional drawing which shows the state by which the curvature of this and the shift | offset | difference of arrangement value were corrected.

[Card edge connector connection structure]
As shown to Fig.1 (a), each connector terminal 4 is each formed in strip | belt shape. Each connector terminal 4 is formed of a material having electrical conductivity and spring property. The connector terminal 4 is made of, for example, a metal having conductivity and spring properties such as copper, phosphor bronze, brass, nickel, and the surface thereof is plated with gold, tin, nickel, solder or the like as necessary. Is given.

  As shown in FIG.1 (c), the front-end | tip part of each connector terminal 4 is bend-formed, the base part 4a extended horizontally, the arm 4b bent diagonally upward from this base part 4a, and this arm 4b It is comprised from the bending piece 4c bent diagonally downward, and the front-end | tip 4e turned back diagonally upward from this bending piece 4c. A boundary portion between the bent piece 4c and the tip 4e is set to a contact portion 4d having a contact point in contact with the electrode 3. Hereinafter, when it says the front-end | tip part of the connector terminal 4, the bent piece 4c, the contact part 4d, and the front-end | tip 4e shall be pointed out.

  As shown in FIG. 1C, the connector 5 is formed in a socket type (box type), and has an opening 5a for inserting the insertion part 1a of the circuit board 1. The connector 5 is thin and formed in a horizontally long shape, and bases 4a of the connector terminals 4 are inserted and fixed at regular intervals in a bottom 5b facing the opening 5a. In the space formed inside the connector 5, the connector terminals 4 are arranged in the longitudinal direction at regular intervals with the tip 4e facing the opening 5a.

  As shown in FIG. 1C, the circuit board 1 is formed in a thin flat plate shape (card shape), and as shown in FIG. An insertion portion 1a having a width smaller than the width of 1 is formed to protrude. On the surface 1b of the insertion portion 1a, a plurality of grooves 2 are formed at regular intervals from the front end to the rear end of the insertion portion 1a. Each groove 2 has an opening end 2c having a width wider than the width of the connector terminal 4 in the short direction at the front end. The adjacent grooves 2 are insulated by a portion formed of an insulating material that forms the insertion portion 1a.

  As shown in FIG.1 (b), each groove | channel 2 is formed in the shape which made the one side wall of the groove | channel of the V-shaped longitudinal section perpendicular | vertical. Of the side walls constituting the groove 2, one side wall 2a is formed vertically from its upper end to its lower end, and the other side wall 2b is inclined downwardly from its upper end toward the lower end of one side wall 2a. Is formed. The wall surfaces of the side wall 2a and the side wall 2b intersect at an acute angle, and the lower end of the side wall 2a and the end of the side wall 2b on the valley side are common.

  The electrodes 3 are arranged on the slopes of the side walls 2b of the grooves 2, and the electrodes 3 are not arranged on the wall surfaces of the side walls 2a. Each electrode 3 is formed in a film shape from a conductive material, and forms a part of the slope formed by the side wall 2b. An electrode 3 made of copper or the like is formed on the slope of the side wall 2b, and further, gold plating or the like is formed on the surface thereof as necessary.

[Action]
Now, as shown to Fig.2 (a), in the connector terminal 4, what the front-end | tip part bends or the arrangement position of a longitudinal direction has shifted | deviated exists. As shown in FIG. 1 (d), when the insertion portion 1 a of the circuit board 1 is inserted into the opening 5 a of the connector 5, the tip 4 e of each connector terminal 4 is connected to the opening end 2 c of the corresponding groove 2. Inserted, the back surface of the tip 4e comes into contact with the upper end corner of the front end of the insertion portion 1a. When the insertion portion 1a of the circuit board 1 is further inserted, the contact portion 4d of each connector terminal 4 rides on the slope of the side wall 2b of the groove 2 against the spring force of the connector terminal 4, and the contact portion 4d presses the electrode 3 disposed on the side wall 2b.

  When the insertion portion 1a of the circuit board 1 is further inserted, each connector terminal 4 moves to the back of the groove while the contact portion 4d presses the electrode 3, and the end portion of the opening portion 5a of the connector 5 is moved. Comes into contact with the front end 1c of the circuit board 1 and stops moving. At this time, as shown in FIG. 2A, the connector terminal 4 whose arrangement position is shifted to the peak side of the slope of the side wall 2b is moved to the back of the groove 2 by its own spring force, and the valley of the slope of the side wall 2b. Slide down to the side. Then, as shown in FIG. 2 (b), it is fixedly disposed at a position where it contacts the side walls 2a and 2b, that is, at the bottom (bottom) of the groove, and the contact portion 4d of the connector terminal 4 is in strong contact with the electrode 3, The terminal 4 and the electrode 3 are reliably electrically connected.

That is, even if the tip of the connector terminal 4 is bent or the arrangement position is shifted, the arrangement position is corrected to the fixed position (bottom part) of the groove 2, and the electrode 3 arranged in the groove 2 is surely electrically connected. Can be connected.
Further, the connector terminal 4 inserted into the groove 2 of the circuit board 1 moves in the direction of the electrode 3 while pressing the side wall 2b by its own spring force, so there is no possibility of detachment from the groove 2.
Therefore, even when there is a bending of the connector terminal 4 or a shift in the arrangement position of the connector terminal 4, the card edge connector does not cause contact between adjacent connector terminals and poor conduction between the connector terminal 4 and the electrode 3. The connection structure can be realized.
Further, each connector terminal 4 is inserted into the groove 2 of the circuit board 1, and the connector terminals are insulated by the wall between the grooves, so that there is no possibility that the adjacent connector terminals come into contact with each other. Thus, the number of connector terminals can be increased.

Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of the card edge connector connection structure according to this embodiment, and corresponds to FIG. Except for the arrangement position of the electrode 3 in the connection structure of the card edge connector according to this embodiment, it is the same as that of the first embodiment described above, so the description of the same part is omitted.

The groove 2 is formed in the same shape as the groove 2 of the first embodiment. Of the side walls constituting the groove 2, the electrode 3 is arranged on the vertical wall surface of the side wall 2a, and the electrode 3 is not arranged on the slope of the side wall 2b. The connector terminal 4 whose arrangement position is shifted to the mountain side of the side wall 2b slides down the slope of the side wall 2b as it moves to the back of the groove 2 by its own spring force, and is in contact with the side walls 2a and 2b, that is, the groove Fixedly placed at the bottom (bottom). Then, the left side surface of the contact portion 4d of the connector terminal 4 and the electrode 3 are in strong contact, and the connector terminal 4 and the electrode 3 are reliably electrically connected.
Therefore, if the card edge connector connection structure according to the second embodiment is implemented, the same effects as those of the first embodiment can be obtained.

<Third Embodiment>
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view of the card edge connector connection structure according to this embodiment, and corresponds to FIG. Except for the arrangement position of the electrode 3 in the connection structure of the card edge connector according to this embodiment, it is the same as that of the first embodiment described above, so the description of the same part is omitted.

  The groove 2 is formed in the same shape as the groove 2 of the first embodiment. Electrodes 3 are arranged on both wall surfaces of the side walls 2a and 2b constituting the groove 2. The connector terminal 4 whose arrangement position is shifted to the mountain side of the side wall 2b slides down the slope of the side wall 2b as it moves to the back of the groove 2 by its own spring force, and is in contact with the side walls 2a and 2b, that is, the groove Fixedly placed at the bottom (bottom). And the left end of the contact part 4d of the connector terminal 4 and the right end of the bottom face strongly contact the electrode 3, and the connector terminal 4 and the electrode 3 are reliably electrically connected.

  Therefore, if the card edge connector connection structure according to the third embodiment is implemented, the same effects as those of the first embodiment can be obtained. Further, since the electrodes 3 are arranged on the both side walls 2a and 2b of the groove 2, the connector terminal 4 is shifted to one side wall when the connection work between the insertion portion 1a of the circuit board 1 and the connector 5 is completed. Even when the connector terminal 4 is disposed, the connector terminal 4 always comes into contact with the electrode 3 disposed on one side wall thereof, so that the connector terminal 4 and the electrode 3 can be electrically connected more reliably. .

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a cross-sectional view of the card edge connector connection structure according to this embodiment, and corresponds to FIG. Except for the shape of the groove in the connection structure of the card edge connector according to this embodiment, it is the same as that of the third embodiment described above, so the description of the same part is omitted.

  The groove 2 has a V-shaped longitudinal section. Electrodes 3 are arranged on both wall surfaces of the side walls 2a and 2b constituting the groove 2. The connector terminal 4 whose arrangement position is shifted to the mountain side of the side wall 2a or 2b slides down the slope of the side wall as it moves to the back of the groove 2 by its own spring force, and is in contact with the side walls 2a and 2b, that is, the groove Fixedly arranged in the valley (bottom). Then, the right and left ends of the bottom surface of the contact portion 4d of the connector terminal 4 are in strong contact with the electrode 3, so that the connector terminal 4 and the electrode 3 are reliably electrically connected.

  Therefore, if the card edge connector connection structure according to the fourth embodiment is implemented, the same effects as those of the third embodiment can be obtained. Furthermore, even if the arrangement position of the connector terminal 4 is shifted to either mountain side of the side walls 2a and 2b of the groove 2, it slides down the slope of the shifted side wall and is arranged on both side walls. Since the electrode 3 always comes into contact, the connector terminal 4 and the electrode 3 can be more reliably electrically connected.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view of the card edge connector connection structure according to this embodiment, and corresponds to FIG. Since the shape of the groove in the connection structure of the card edge connector according to this embodiment is the same as that of the first embodiment, description of the same portion is omitted.

  Inside the connector 5, a group of connector terminals composed of a plurality of connector terminals 4 arranged at regular intervals in the longitudinal direction are arranged in two upper and lower layers at intervals. A plurality of grooves 2 for inserting the above-mentioned two layers of connector terminal groups are respectively formed on the front and back surfaces of the insertion portion 1a of the circuit board 1. The electrode 3 is disposed on the slope of the side wall 2b that constitutes the groove 2. The connector terminal 4 whose arrangement position is shifted to the mountain side of the side wall 2b slides down the slope of the side wall 2b as it moves to the back of the groove 2 by its own spring force, and is in contact with the side walls 2a and 2b, that is, the groove Fixedly placed at the bottom (bottom). Then, the right end of the bottom surface of the contact portion 4d of the connector terminal 4 and the electrode 3 are in strong contact, and the connector terminal 4 and the electrode 3 are reliably electrically connected.

  Therefore, if the card edge connector connection structure according to the fifth embodiment is implemented, the same effects as those of the first embodiment can be obtained. In particular, the connector 5 having the connector terminal groups arranged in the upper and lower layers inside the circuit board 1 and the circuit board 1 in which the grooves 2 for inserting the connector terminal groups are respectively formed on both the front and back surfaces of the insertion portion 1a are securely provided. Can be electrically connected.

<Sixth Embodiment>
Next, a sixth embodiment of the invention will be described with reference to FIG. FIG. 7 is a plan view showing a card edge connector connection structure according to this embodiment, and corresponds to FIG. Except for the connector terminal and the width of the groove in the connection structure of the card edge connector according to this embodiment, it is the same as that of the first embodiment described above, so the description of the same part is omitted.

A connector terminal 4 having a wide width in the short direction and a narrow connector terminal 4 are arranged. In the example shown in FIG. 7, two wide connector terminals 4 are arranged on the left side, and three narrow connector terminals 4 are arranged on the right side. The width of the opening end 2c of the groove 2, the side wall 2b of the groove, and the size of the electrode are formed in accordance with the width of the connector terminal 4 inserted into the groove.
For example, the electrode 3 having a large area can be assigned to a power supply electrode that can pass a current, and the electrode 3 having a small area can be assigned to a signal electrode that does not require a current. If this structure is used, in addition to the effect of 1st Embodiment, the effect that many electrodes can be efficiently arrange | positioned in the limited space can also be show | played.

<Seventh embodiment>
Next, a seventh embodiment of the invention will be described with reference to FIG. FIG. 8 is a longitudinal sectional view showing the connection structure of the card edge connector according to this embodiment, and corresponds to FIG. Since the arrangement of the card edge connector according to this embodiment is the same as that of the first embodiment except for the groove arrangement, the description of the same parts is omitted.

  The grooves 2 need not be arranged at regular intervals. In the example shown in FIG. 8, the distance between the leftmost groove 2 and the right adjacent groove 2 is wider than the distance between the other grooves. In this way, by widening the gap between some of the grooves, in addition to the effects of the first embodiment, it is possible to identify the position of a special electrode and to identify the left and right mounting directions of the connector 5. The effect that can be produced. In addition, discrimination property can also be taken out by narrowing the space | interval between some grooves.

<Eighth Embodiment>
Next, an eighth embodiment of the invention will be described with reference to FIG. FIG. 9 is a longitudinal sectional view showing the connection structure of the card edge connector according to this embodiment, and corresponds to FIG. Since the arrangement of the card edge connector according to this embodiment is the same as that of the first embodiment except for the groove arrangement, the description of the same parts is omitted.

  Instead of arranging all the electrodes 3 inside the groove 2, some of the electrodes 3 may be arranged inside the groove 2, and others may be arranged on the surface of the insertion portion 1 a of the circuit board 1. That is, the groove 2 can be formed at a desired position, and the electrode 3 can be disposed inside the groove 2. In the example shown in FIG. 9, the electrodes 3 at both ends are disposed on the side wall 2 b of the groove 2, and the other electrodes 3 are disposed on the surface of the insertion portion 1 a of the circuit board 1. Thus, by forming the groove 2 in a part of the insertion portion 1a of the circuit board 1 and disposing the electrode 3 inside the groove 2, the position of the special electrode can be identified.

<Ninth Embodiment>
Next, a ninth embodiment of the invention will be described with reference to FIG. FIG. 10 is a plan view showing a card edge connector connection structure according to this embodiment, and corresponds to FIG. Since the card edge connector connection structure according to this embodiment is the same as that of the first embodiment except for the groove structure and electrode arrangement, the description of the same parts is omitted.

  The insertion side of the connector terminal 4 in each groove 2 is formed in an expanded manner, and slopes 2d are formed on both sides of the expanded portion (hereinafter referred to as an expanded portion). The opening end 2c of the expanded portion 2h is formed wider than the width of the connector terminal 4 in the short direction, and the width of the main body portion 2g of the groove 2 is such that the connector terminal 4 can be finally inserted. Each inclined surface 2d is formed perpendicular to the bottom surface of the expanding portion 2h, and the interval between both inclined surfaces 2d is gradually narrowed from the opening end 2c toward the insertion direction of the connector terminal 4 (main body portion 2g). ing. The electrode 3 is arranged from the back of the bottom of the expanded portion 2h to the bottom of the main body portion 2g.

The tip 4e of the connector terminal 4 whose tip is bent to the left or right or whose arrangement position is shifted to either the left or right is guided to the back while being in contact with any of the inclined surfaces 2d of the expanded portion 2h. It is inserted into the main body portion 2g. And the contact part 4d of the connector terminal 4 and the electrode 3 are electrically connected.
In other words, even if the tip portion of the connector terminal 4 is bent significantly to the left or right, or the connector terminal 4 is greatly displaced to the left or right, the tip portion is moved along the inclined surface 2d. It can be guided to the main body portion 2g of the groove 2.
Therefore, even if the tip of the connector terminal 4 is bent to the left or right, or the connector terminal 4 is shifted to the left or right, the electrical connection with the electrode 3 of the circuit board 1 is ensured. Can be connected.

<Tenth Embodiment>
Next, a tenth embodiment of the invention will be described with reference to FIG. 11A and 11B are plan views showing the card edge connector connection structure according to this embodiment, wherein FIG. 11A is a view corresponding to FIG. 1D, and FIG. 11B is a view corresponding to FIG. is there. Since the card edge connector connection structure according to this embodiment is the same as that of the first embodiment except for the groove structure, the description of the same parts is omitted.

The opening end 2c of each groove 2 on the insertion side of the connector terminal 4 is caused to ride the tip end portion of the connector terminal 4 inserted from the opening end 2c, and the leading end portion is guided to the inside of the groove 2 A slope 2e is formed. The slope 2e is formed in an upward gradient from the lower end of the opening end 2c.
As shown in FIG. 11 (a), when the connector terminal 4 moves in the direction indicated by the arrow F, the contact portion 4d at the tip of the connector terminal 4 rides on the slope 2e, and goes to the back of the groove 2 along the slope 2e. As shown in FIG. 11B, the contact portion 4d and the electrode 3 are electrically connected.

  Thus, the tip of the connector terminal 4 rides on the inclined surface 2e formed at the opening end 2c of the groove 2 and is guided into the groove 2, so that the resistance when the connector terminal 4 is inserted is reduced and smooth. Can be inserted into.

  FIG. 12 is a plan view showing an example in which the slope 2e is applied to the card edge connector connection structure according to the ninth embodiment. A slope 2e is formed at each open end 2c of the expanded portion 2h of each groove 2. If this structure is used, in addition to the effect of the ninth embodiment described above, it is possible to reduce the resistance when the connector terminal 4 is inserted and to achieve an effect that the connector terminal 4 can be smoothly inserted.

<Eleventh embodiment>
Next, an eleventh embodiment of the present invention will be described with reference to FIG. FIG. 13 is a longitudinal sectional view showing the connection structure of the card edge connector according to this embodiment, and corresponds to FIG. Since the card edge connector connection structure according to this embodiment is the same as that of the first embodiment except for the groove structure, the description of the same parts is omitted.

The bottom of each groove 2 is formed on a slope 2f having an upward slope from the opening end 2c to the insertion direction (the back of the groove) of the connector terminal 4, and the electrode 3 is disposed on the side wall 2b of the groove 2. When the insertion portion 1 a of the circuit board 1 is inserted into the connector 5, the distal end portion of the connector terminal 4 rides on the inclined surface 2 f and is guided to the depth of the groove 2 along the inclined surface 2 f, so that the contact portion 4 d and the electrode 3 Are electrically connected.
In this way, the tip of the connector terminal 4 rides on the inclined surface 2f formed at the opening end 2c of the groove 2 and is guided into the groove 2, so that the resistance when the connector terminal 4 is inserted is reduced and smooth. Can be inserted into. Further, the distal end portion of the connector terminal 4 is lifted from the inclined surface 2f of the groove 2 as it goes deeper into the groove 2, and the force that presses the bottom of the inclined surface 2f groove by its own spring force increases. Can be more reliably electrically connected.

<Twelfth embodiment>
Next, a twelfth embodiment of the invention is described with reference to FIG. FIGS. 14A and 14B are side views showing connector terminals in the card edge connector connection structure according to this embodiment. Other than the connector terminal in the connection structure of the card edge connector according to this embodiment is the same as that of the first embodiment described above, and the description of the same portion is omitted.

  The shape of the contact portion 4d of the connector terminal 4 may be other than the shape shown in FIG. As shown to Fig.14 (a), you may form in the shape swelled in the circular arc shape below, and you may form flatly as shown in the same figure (b). Even when the connector terminals of these shapes are applied to the connection structure of the card edge connector according to the first to eleventh embodiments, the effects of the embodiments can be obtained.

<13th Embodiment>
Next, a thirteenth embodiment of the invention is described with reference to FIG. FIG. 15D is a side view of the connector terminal, and FIGS. 15A, B, and C are front views of the connector terminal when the connector terminal shown in FIG. It is. Other than the connector terminal in the connection structure of the card edge connector according to this embodiment is the same as that of the first embodiment described above, and the description of the same portion is omitted.

The shape of the contact portion 4d of the connector terminal 4 is not limited and can be various shapes. As shown in FIG. 15 (a), by forming the back surface of the contact portion 4d in a spherical shape, sliding friction with the side wall or the electrode of the groove 2 can be reduced, so that the resistance when the connector terminal 4 is inserted is further increased. It can be further reduced and inserted more smoothly.
Further, as shown in FIGS. 15B and 15C, the oxide film formed on the surface of the electrode 3 can be scraped and removed by forming the back surface of the contact portion 4d into a sword tip shape. The electrical resistance at the contact point between the connector terminal 4 and the electrode 3 can be reduced. For this reason, it is not particularly necessary to apply gold plating to the surface of the electrode 3 in order to reduce the electrical resistance between the connector terminal 4 and the electrode 3.

It is explanatory drawing of the connection structure of the card edge connector which concerns on 1st Embodiment of this invention, (a) is a top view, (b) is AA arrow sectional drawing of (a), (c) is (a) ) Is a cross-sectional explanatory view taken along the line B-B of FIG. 4B, and FIG. 4D is an explanatory view showing a place where the circuit board is inserted into the connector. It is explanatory drawing of the connection structure of the card edge connector which concerns on 1st Embodiment, (a) is sectional drawing which shows the state in which the connector terminal is bent or the arrangement position has shifted | deviated, (b) is bending of a connector terminal. It is sectional drawing which shows the state by which the shift | offset | difference of arrangement value was corrected. It is sectional drawing of the connection structure of the card edge connector which concerns on 2nd Embodiment, and is a figure corresponding to FIG.2 (b). It is sectional drawing of the connection structure of the card edge connector which concerns on 3rd Embodiment, and is a figure corresponding to FIG.2 (b). It is sectional drawing of the connection structure of the card edge connector which concerns on 4th Embodiment, and is a figure corresponding to FIG.2 (b). It is sectional drawing of the connection structure of the card edge connector which concerns on 5th Embodiment, and is a figure corresponding to FIG.2 (b). It is a top view which shows the connection structure of the card edge connector which concerns on 6th Embodiment, and is a figure corresponding to Fig.1 (a). It is a longitudinal cross-sectional view which shows the connection structure of the card edge connector which concerns on 7th Embodiment, and is a figure corresponding to FIG.2 (b). It is a longitudinal cross-sectional view which shows the connection structure of the card edge connector which concerns on 8th Embodiment, and is a figure corresponding to FIG.2 (b). It is a top view which shows the connection structure of the card edge connector which concerns on 9th Embodiment, and is a figure corresponding to Fig.1 (a). It is a top view which shows the connection structure of the card edge connector which concerns on 10th Embodiment, (a) is a figure corresponding to FIG.1 (d), (b) is a figure corresponding to FIG.1 (c). It is a top view which shows an example which applied the slope 2e to the connection structure of the card edge connector which concerns on above-mentioned 9th Embodiment. It is a longitudinal cross-sectional view which shows the connection structure of the card edge connector which concerns on 11th Embodiment, and is a figure corresponding to FIG.1 (c). (A), (b) is a side view which shows the connector terminal in the connection structure of the card edge connector which concerns on 12th Embodiment. (D) is a side view of a connector terminal in a thirteenth embodiment, and (a), (b) and (c) are connector terminals when the connector terminal shown in (d) is viewed from the direction of arrow C. FIG. It is explanatory drawing which shows the connection structure of the conventional card edge connector, (a) is a top view of a card edge connector, (b) is AA arrow sectional drawing of (a), (c) is the front-end | tip of a connector terminal It is sectional drawing which shows the state which a part tends to ride on a circuit board. It is explanatory drawing which shows the connection structure of the conventional card edge connector, (a) is a top view of a card edge connector, (b) is BB arrow sectional drawing of (a). It is explanatory drawing which shows the arrangement | positioning state of a connector terminal, (a) is explanatory drawing which shows the case where a connector terminal is bent in the arrangement direction (horizontal direction), (b) is the arrangement position (lateral direction) of a connector terminal. It is explanatory drawing which shows the case where it has shifted | deviated to ().

Explanation of symbols

1 .. Circuit board, 1a .. Insertion part, 2 .. Groove, 2a, 2b .. Side wall (guide surface),
2c..Open end, 3..Electrode, 4..Connector terminal, 4e..End, 5..Connector,
5a .. Opening.

Claims (2)

A socket-type connector in which a plurality of strip-like connector terminals having spring properties are arranged in parallel with the tip portion facing the opening, and
A plurality of electrodes that are electrically connected to each connector terminal, and a card edge type substrate arranged in parallel at a position corresponding to each connector terminal, and
In the card edge connector connection structure in which each connector terminal is electrically connected to the corresponding electrode when the substrate is inserted into the opening of the connector.
The substrate is
A plurality of grooves into which the connector terminals are inserted when connecting to the connector;
A plurality of the electrodes respectively provided in the plurality of grooves, and
Each of the plurality of grooves has an opening end wider on the insertion side of the connector terminal than the width in the lateral direction at the distal end portion of the connector terminal, and is inserted through the opening end. Each of the terminal end portions is guided toward the corresponding electrode, and each has a guide surface electrically connected to the electrode,
The insertion side of the connector terminal of each groove is formed to be expanded, and both inclined surfaces on both sides of the expanded portion are the guide surfaces, and the insertion side of the connector terminal on the both inclined surfaces Is the open end,
The bottom of each groove is formed on an upward slope from the insertion side of the connector terminal to the insertion direction,
When the board is inserted into the opening of the connector, each connector terminal is guided toward the corresponding electrode along the guide surface while pressing the corresponding guide surface by its own spring force, A card edge connector connection structure, characterized in that the structure is electrically connected to the electrode. The card edge connector connection structure according to claim 1 , wherein the electrodes are arranged at the bottoms of the grooves .

Images