JP2012022945A - Card edge connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a printed board to a card edge connector side with a simple structure.SOLUTION: A card edge connector includes a case for accommodating a connector housing and the printed board. The connector housing has a U-shaped section and a terminal connected to a cable terminal is juxtaposed at least on the internal face of an upper wall. Electric contact portions at the tip of the terminal group are placed in parallel on the internal face of the upper wall on the opening side of the connector housing. On the other hand, terminals are juxtaposed at least on the upper plane along one side of the printed board. The printed board is inserted into the opening of the connector housing from the juxtaposed terminal side, so as to be connected to the terminals on the connector housing side. Latch units are provided at the corners on both sides of the connector housing insertion side of the printed board. On the lower wall and/or the upper wall of the case, there is provided a latch receiving unit for latching with a latch unit when the printed board is inserted.

Description

  The present invention relates to a card edge connector, and more particularly, to prevent rattling and displacement of a printed circuit board inserted into the card edge connector, thereby enabling highly reliable electrical connection.

Conventionally, as a card edge connector for electrically connecting a terminal connected to an electric wire terminal and a thin plate-like terminal arranged side by side along an edge of a printed circuit board, for example, JP 2001-135400 A (Patent Document 1). The thing shown in is mentioned.
As shown in FIG. 7, the card edge connector 1 of Patent Document 1 has a connector housing 2 provided with openings 3a and 4a on both side surfaces. In the connector housing 2, a plurality of terminal accommodating chambers 3 into which terminals 5 connected to the electric wire w terminal are inserted through an opening 3 a on one side surface are divided into two stages, and an opening 4 a on the other side. A board insertion space 4 into which the printed board 7 is inserted is formed. The board insertion space 4 is formed such that terminals (not shown) arranged in parallel on the upper and lower surfaces along the edge of the printed circuit board 7 face the upper and lower terminal accommodating chambers 3. The electrical contact portion 6 provided on the distal end side of the terminal 5 of the electric wire terminal provided side by side is configured to be elastically abutted on and electrically connected to each terminal of the printed board 7 inserted into the board insertion space 4.

JP 2001-135400 A

  In the card edge connector 1 having the above-described configuration, the printed circuit board 7 is held in a predetermined position by the electrical contact portion 6 in the terminal accommodating chamber 3 being pressed against the inserted printed circuit board 7 with a required elastic force, and the electric wire w terminal. The terminal 5 and the printed circuit board 7 are electrically connected. However, the printed circuit board 7 may be rattled or displaced due to vibration or impact, and there is a risk that a stable electrical connection state cannot be obtained.

  The present invention fixes the printed circuit board inserted into the card edge connector to the card edge connector side with a simple structure to prevent rattling and displacement, and improves the connection reliability between the terminal of the electric wire terminal and the terminal of the printed circuit board. The challenge is to increase it.

In order to solve the above-mentioned problem, the first invention is characterized in that terminals connected to the wire terminals are arranged in parallel on at least the inner surface of the upper wall of the U-shaped connector housing, and the electrical contact portions at the tips of these terminal groups The terminals are arranged in parallel on at least the upper surface along one side of the printed circuit board while being arranged in parallel to at least the inner surface of the upper wall on the opening side of the connector housing, and the printed circuit board is inserted from the opening of the connector housing from the terminal juxtaposed side Connected to the terminal on the connector housing side,
A latching portion is provided at both corners of the printed circuit board on the connector housing insertion side, and the latched portion is latched with the latching portion when the printed circuit board is inserted on the lower wall or / and the upper wall of the connector housing. A card edge connector characterized in that a stop is provided.

  As described above, in the first invention, the locking portions are provided at the corners on both sides of the printed circuit board on the connector housing insertion side, and the locked portions that are locked with the locking portions when the printed circuit board is inserted are provided on the connector housing. The structure is provided on the lower wall and / or the upper wall. Therefore, when a printed circuit board having terminals arranged on at least the upper surface along one side is inserted from the opening of the connector housing, the electrical contact portion arranged in parallel on the inner surface of the upper wall of the connector housing contacts the terminals of the printed circuit board. The terminal of the electric wire terminal and the terminal of the printed circuit board are electrically connected, and the locking portion provided on the printed circuit board is locked to the locked portion provided on the connector housing, so that the printed circuit board is attached to the connector housing. It can be fixed securely. Therefore, rattling and displacement of the printed circuit board after insertion can be prevented with a simple structure, and the connection reliability between the terminal of the electric wire terminal and the terminal of the printed circuit board can be improved. Further, since the locking portion and the locked portion can be locked in the connector housing, the card edge connector can be downsized as compared with the case where the locking portion is provided on the outer surface side of the connector housing to increase the number of protruding portions.

The locking portion provided on the printed board is a locking hole, the locked portion provided on the connector housing is a bent bar, the center of the bent bar is supported by the connector housing, and the bent portion is inserted when the printed board is inserted. One end of the rod can be pushed down by the printed circuit board, while the other end can be pushed up and inserted into the locking hole.
It is necessary to arrange the bending rod so that the other end of the bending rod is inserted into the locking hole at the position where the insertion of the printed circuit board is completed. As the shape of the bending rod, for example, it is preferable that it is substantially L-shaped, and a support pin is inserted into an L-shaped bending portion at the center so that the bending rod is rotatably supported by the connector housing.

  The locking portion provided on the printed circuit board may be a convex portion or a concave portion, and the locked portion provided on the connector housing may be a concave portion that is locked with the convex portion or a convex portion that is locked with the concave portion. At this time, the concave portion and the convex portion need to be arranged so that the concave and convex portions are fitted at the position where the insertion of the printed board is completed.

Further, the locking portion provided on the printed circuit board is formed of a locking hole, and the locked portion provided on the connector housing is also a locking hole, and the locking holes are communicated with each other so that a lock piece is inserted and fixed. Also good. At this time, the locking holes provided in the printed board and the connector housing need to be arranged so as to communicate with each other at the position where the insertion of the printed board is completed.
The locking piece may be press-fitted into the locking hole communicated from the outer surface side of the connector housing after communicating the locking hole of the printed circuit board and the connector housing. Further, the lock piece is accommodated in a locking hole of the connector housing via a spring, and when the locking hole of the printed circuit board and the connector housing communicates, the locking piece becomes a locking hole on the printed circuit board side by elastic return of the spring. It is good also as a structure inserted.

  It is preferable that terminals connected to the wire terminals of the wire harness are arranged in parallel on the inner surfaces of the upper and lower walls of the connector housing facing each other, and the terminals are arranged in parallel on the upper and lower surfaces of the connector on the connector insertion side.

  According to the said structure, the terminal connected to the electric wire terminal of a wire harness is arranged in parallel with the opposing inner surface of the upper and lower walls of a connector housing, respectively, and the printed circuit board which arranged the terminal in parallel on the upper and lower surfaces of the connector insertion side is connected to the connector housing. By inserting from the opening, it is possible to electrically connect the terminal of the electric wire terminal arranged in parallel on the upper wall inner surface of the connector housing and the terminal arranged in parallel on the upper surface of the printed circuit board. The terminal and the terminal arranged in parallel on the lower surface of the printed circuit board can be electrically connected.

In the second invention, the connector housing and the printed circuit board are accommodated in the case.
Specifically, the second invention is provided with a case for housing the connector housing and the printed circuit board, provided with a connector housing insertion port on one side of the case and a printed circuit board insertion port on the opposite side,
The connector housing is U-shaped in cross section, and at least the terminals connected to the wire terminals are arranged in parallel on the inner surface of the upper wall, and the electrical contact portion at the tip of these terminal groups is parallel to the inner surface of the upper wall on the opening side of the connector housing. On the other hand, terminals are arranged in parallel on at least the upper surface along one side of the printed circuit board, and the printed circuit board is inserted into the opening of the connector housing from the terminal parallel arrangement side and connected to the terminals on the connector housing side,
Locking portions are provided at the corners on both sides of the printed circuit board on the connector housing insertion side, and are locked with the locking portions when the printed circuit board is inserted into the lower wall and / or upper wall of the case. There is provided a card edge connector characterized in that a portion is provided.

In the second invention, a card edge connector with a case in which a connector housing and a case for accommodating a printed board are integrated, and as described above, locking portions are provided at both corners on the connector housing insertion side of the printed board. And a locked portion that locks with the locking portion when the printed board is inserted is provided on the lower wall and / or the upper wall of the case. Therefore, the terminal of the electric wire terminal and the terminal of the printed circuit board are electrically connected by inserting the printed circuit board, and the locking portion provided on the printed circuit board is locked to the locked portion provided on the case. Can be securely fixed to the case. Therefore, rattling and displacement of the printed circuit board after insertion can be prevented with a simple structure, and the connection reliability between the terminal of the electric wire terminal and the terminal of the printed circuit board can be improved. In addition, since the locking portion and the locked portion can be locked in the case, the case can be downsized compared to the case where the locking portion is provided on the outer surface side of the case to increase the number of protruding portions.
The case may be separated from the connector housing, but may be formed integrally with the connector housing.

  As described above, according to the present invention, the locking portions are provided at the corners on both sides of the printed circuit board on the connector housing insertion side, and the locked portions that are locked with the locking portions when the printed circuit board is inserted are connected to the connector housing ( It is configured to be provided on the lower wall or / and the upper wall of the first invention) or the case (second invention). Therefore, by inserting the printed circuit board, the terminal of the electric wire terminal and the terminal of the printed circuit board are electrically connected, and the locking portion provided on the printed circuit board is locked to the locked portion provided on the connector housing or the case. Thus, the printed circuit board can be securely fixed to the connector housing or the case. Therefore, rattling and displacement of the printed circuit board after insertion can be prevented with a simple structure, and the connection reliability between the terminal of the electric wire terminal and the terminal of the printed circuit board can be improved.

The card edge connector in 1st Embodiment is shown, (A) is a top view of the card edge connector in the state by which the printed circuit board was inserted, (B) is the perspective view seen from the terminal insertion side of an electric wire terminal, (C) is It is the perspective view seen from the printed circuit board insertion side. It is AA sectional drawing of FIG. (A) is BB sectional drawing of FIG. 1, (B) is sectional drawing which shows the state before the end of a bending rod is pushed down by a printed circuit board. (A), (B) is a side view which shows another example of the latching | locking part provided in a printed circuit board, and the to-be-latched part provided in a connector housing. The card edge connector with a case in 2nd Embodiment is shown, (A) is a top view of the card edge connector in the state by which the printed circuit board was inserted, (B) is the perspective view seen from the connector housing insertion side, (C) is It is the perspective view seen from the printed circuit board insertion side. (A) is CC sectional drawing of FIG. 5, (B) is sectional drawing which shows the state before the end of a bending rod is pushed down by a printed circuit board. It is drawing which shows a prior art example.

Hereinafter, an embodiment of a card edge connector of the present invention will be described with reference to FIGS.
1 to 4 show a first embodiment. The card edge connector 10 of the first embodiment includes a connector housing 11 having a U-shaped cross section having a printed circuit board insertion opening 14 on one side. As shown in FIGS. 1 and 2, the resin-made connector housing 11 has an upper wall 11a, a lower wall 11b, and an intermediate wall 11c disposed between the upper and lower walls 11a and 11b. A plurality of terminal accommodating chambers 12 arranged in parallel in the left-right direction are provided between the upper wall and the intermediate wall 11c, and between the lower wall 11b and the intermediate wall 11c. The terminals 20 are juxtaposed on the inner surfaces of the upper wall 11a and the lower wall 11b of the connector housing 11 by inserting and locking the terminals 20 connected to the electric wire w terminal of the wire harness W / H in each terminal accommodating chamber 12. is doing.

  The terminal 20 of the electric wire w terminal includes an electric wire connecting portion 21 and a substrate connecting portion 22, and the electric wire connecting portion 21 includes an insulation coating barrel 21a and a core wire barrel 21b, and the substrate connecting portion 22 is in electrical contact with the main body portion 22a. It consists of part 22b. The main body portion 22a of the board connecting portion 22 has a rectangular tube shape (a shape having a bottom wall 22a-1 and both side walls 22a-2) formed at the tip of the electric wire connecting portion 21, and the electric contact portion 22b has a base end portion as a main body portion. The elastic contact piece is connected to the bottom wall 22a-1 of 22a and is formed in a folded shape within the main body 22a surrounded by the bottom wall 22a-1 and both side walls 22a-2.

  The front end of the intermediate wall 11c of the connector housing is positioned behind the front ends of the upper and lower walls 11a and 11b, and a printed board insertion space 13 is provided in front of the front end of the intermediate wall 11c. That is, the printed circuit board insertion space 13 is formed so that the electrical contact portion 22 b on the distal end side of the terminal 20 arranged in parallel in each terminal accommodating chamber 12 faces the printed circuit board insertion space 13.

  Conductor patterns (not shown) for forming circuits are formed on both the upper and lower surfaces of the printed board 30 inserted from the printed board insertion opening 14 of the connector housing 11, and necessary electrical components (not shown) are mounted. A plurality of terminals 31 made of thin plate conductors are arranged in parallel on the upper and lower surfaces along one side of the printed board 30 on the connector insertion side.

  That is, in the card edge connector 10 of the present embodiment, when the printed circuit board 30 is inserted into the printed circuit board insertion space 13 from the printed circuit board insertion opening 14 of the connector housing 11 from the terminal juxtaposition side, the card is accommodated in the upper terminal accommodating chamber 12. The electric contact portion 22b of the terminal 20 of the electric wire terminal is elastically contacted and electrically connected to the terminal 31 on the upper surface side of the printed circuit board 30, and the electric contact portion of the terminal 20 of the electric wire terminal housed in the lower terminal housing chamber 12 22 b is configured to be elastically abutted against and electrically connected to the terminal 31 on the lower surface side of the printed circuit board 30.

  Further, in the present embodiment, as shown in FIGS. 1 and 3, locking portions made of locking holes 32 are provided at both corners on the connector insertion side of the printed circuit board 30 to be inserted, while the lower wall of the connector housing 11. 11b is provided with a bent bar 15 as a locked portion that locks into the locking holes 32 at both corners when the insertion of the printed circuit board 30 is completed. The bending rod 15 is substantially L-shaped, and a support pin 16 is inserted through a central bending portion so that the bending rod 15 is rotatably supported by the connector housing 11. When the printed circuit board 30 is inserted, one end side 15a of the bending rod in the state of FIG. 3B is pushed down by the printed circuit board 30, while the other end side 15b is pushed up, and the other end side 15b is locked at the same time as the insertion is completed. It is made to insert in the hole 32 [FIG. 3 (A)].

  As described above, in the present embodiment, the locking portions including the locking holes 32 are provided at both corners on the connector housing insertion side of the printed circuit board 30, and the locking holes 32 are locked when the printed circuit board 30 is inserted. A locked portion made of a bent bar 15 is provided on the lower wall 11 b of the connector housing 11. Therefore, by inserting the printed circuit board 30, the terminal 20 of the electric wire w terminal and the terminal 31 of the printed circuit board 30 are electrically connected, and in addition to the bending rod 15 provided in the connector housing in the locking hole 32 provided in the printed circuit board 30. The printed circuit board 30 can be securely fixed to the connector housing 11 by inserting and locking the end side. Therefore, rattling and displacement of the printed circuit board 30 after insertion can be prevented with a simple structure, and the connection reliability between the terminal 20 of the electric wire w terminal and the terminal 31 of the printed circuit board 30 can be improved.

  In the present embodiment, all of the locked portions made of the bending rod 15 are provided on the lower wall 11b of the connector housing 11, but either may be provided on the upper wall 11a, or one of them may be provided on the connector housing. 11 may be provided on the lower wall 11 b of the connector housing 11.

In addition, as shown in FIG. 4 (A), as the locking portions provided on the printed circuit board 30, concave portions 33 are provided at both corners on the connector insertion side on the lower surface of the printed circuit board 30, and at both corners when the printed circuit board 30 is inserted. It is good also as a structure which provides the to-be-latched part which consists of the convex part 17 latched to the recessed part 33 in the lower wall 11b of the connector housing 11, respectively. For smooth substrate insertion, a spring 17a may be included in the convex portion 17.
Furthermore, as shown in FIG. 4 (B), as the locking portions provided on the printed circuit board 30, locking holes 34 are provided at both corners on the connector insertion side of the printed circuit board 30, and the both corners are inserted when the printed circuit board 30 is inserted. A locked portion comprising locking holes 18 communicating with the respective locking holes 34 is provided on the lower wall 11 b of the connector housing 11, and a cylindrical lock piece 35 is provided in the communicating locking holes 34, 18 with the connector housing 11. The printed circuit board 30 and the connector housing 11 may be fixed by press-fitting from the outer surface side.
Further, the lock piece is accommodated in a locking hole of the connector housing via a spring, and when the locking hole of the printed circuit board and the connector housing communicate with each other, the locking piece is inserted into the locking hole on the printed circuit board side by elastic return of the spring. It is good also as a structure.

5 and 6 show a second embodiment.
In the second embodiment, as shown in FIG. 5, a card edge connector 100 with a case integrated with a connector housing 11 and a case 40 that accommodates the printed circuit board 30, the printed circuit board 30 is wider than the connector housing 11, As shown in FIG. 6, the locked portion (bending bar 43) locked to the locking portions (locking holes 32) provided at both corners on the connector housing insertion side of the printed circuit board 30 is provided on the lower wall of the case 40. Except for the point provided in 40b, the second embodiment is the same as the first embodiment.
The case 40 is provided with a connector housing insertion port 41 on one side and a printed circuit board insertion port 42 on the opposite side. The case 40 may be separate from the connector housing 11, but may be formed integrally with the connector housing 11.

  As described above, in the present embodiment, the locking portions including the locking holes 32 are provided at both corners on the connector housing insertion side of the printed circuit board 30, and the locking holes 32 are locked when the printed circuit board 30 is inserted. A locked portion including a bent bar 43 is provided on the lower wall 40 b of the case 40. Therefore, by inserting the printed circuit board 30, the terminal 20 of the electric wire w terminal and the terminal 31 of the printed circuit board 30 are electrically connected, and in addition to the bending rod 43 provided in the case 40 in the locking hole 32 provided in the printed circuit board 30. The end side 43b is inserted and locked, so that the printed circuit board 30 can be securely fixed to the case 40. Therefore, rattling and displacement of the printed circuit board 30 after insertion can be prevented with a simple structure, and the connection reliability between the terminal 20 of the electric wire w terminal and the terminal 31 of the printed circuit board 30 can be improved.

In addition, in this embodiment, although all the to-be-latched parts which consist of the said bending rod 43 are provided in the lower wall 40b of the case 40, all may be provided in the upper wall 40a, and one side of the case 40 is provided. The other may be provided on the lower wall 40b of the case 40 on the upper wall 40a.
Moreover, it is good also considering the said latching | locking part and to-be-latched part as the structure similar to FIG. 4 (A) and (B).

10, 100 Card edge connector 11 Connector housing 11a Upper wall 11b Lower wall 14 Printed board insertion opening 15, 43 Bending bar 17 Protruding part 18, 32, 34 Locking hole 20 Terminal 22b of electric wire terminal Electric contact part 30 Printed board 31 Terminal (of printed circuit board) 33 Recess 35 Lock piece 40 Case 40a Upper wall 40b Lower wall 41 Connector housing insertion slot 42 Printed circuit board insertion slot

Claims (7)

Terminals connected to the wire terminals are juxtaposed on the inner surface of at least the upper wall of the U-shaped connector housing, and the electrical contact portions at the tips of these terminal groups are arranged in parallel with at least the upper wall inner surface on the opening side of the connector housing. On the other hand, terminals are arranged in parallel on at least the upper surface along one side of the printed circuit board, and the printed circuit board is inserted from the opening of the connector housing from the terminal parallel arrangement side and connected to the terminal on the connector housing side,
A latching portion is provided at both corners of the printed circuit board on the connector housing insertion side, and the latched portion is latched with the latching portion when the printed circuit board is inserted on the lower wall or / and the upper wall of the connector housing. A card edge connector, wherein a stop is provided.   The locking portion provided on the printed board is a locking hole, the locked portion provided on the connector housing is a bent bar, the center of the bent bar is supported by the connector housing, and the bent portion is inserted when the printed board is inserted. 2. The card edge connector according to claim 1, wherein one side of the bar is pushed down by a printed circuit board, and the other side is pushed up and inserted into the locking hole.   The locking portion provided on the printed circuit board includes a convex portion or a concave portion, and the locked portion provided on the connector housing is a concave portion that locks with the convex portion or a convex portion that locks with the concave portion. Card edge connector as described.   The locking portion provided on the printed circuit board includes a locking hole, and the locked portion provided on the connector housing is also a locking hole, and the locking holes are communicated with each other to insert and fix a locking piece. Item 2. A card edge connector according to Item 1.   The card edge connector according to claim 4, wherein the lock piece is accommodated in a locking hole of the connector housing via a spring.   The terminal connected to the electric wire of a wire harness is respectively arranged in parallel at the inner surface which the upper and lower walls of the connector housing oppose, and the terminal is arranged in parallel on the upper and lower surfaces of the connector insertion side of the printed circuit board. 6. The card edge connector according to any one of 5 above. A case for housing the connector housing and the printed circuit board is provided, a connector housing insertion port is provided on one side of the case and a printed circuit board insertion port is provided on the opposite side,
The connector housing is U-shaped in cross section, and at least the terminals connected to the wire terminals are arranged in parallel on the inner surface of the upper wall, and the electrical contact portion at the tip of these terminal groups is parallel to the inner surface of the upper wall on the opening side of the connector housing. On the other hand, terminals are arranged in parallel on at least the upper surface along one side of the printed circuit board, and the printed circuit board is inserted into the opening of the connector housing from the terminal parallel arrangement side and connected to the terminals on the connector housing side,
Locking portions are provided at the corners on both sides of the printed circuit board on the connector housing insertion side, and are locked with the locking portions when the printed circuit board is inserted into the lower wall and / or upper wall of the case. A card edge connector characterized in that a portion is provided.

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