JP5521845B2 - Card edge connector - Google Patents

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 problems, the present invention provides a terminal connected to an electric wire terminal on at least an inner surface of an upper wall of a U-shaped connector housing, and an electrical contact portion at the tip of the terminal group is connected to the connector housing. The terminals are arranged in parallel on at least the upper surface along one side of the printed board, and the printed circuit board is inserted from the opening of the connector housing from the terminal arranged side. Connected to the terminal on the connector housing side,
Said one locking hole is provided on both sides corners of the printed circuit board of the connector housing insertion side, the locking hole in the bottom wall or / and upper wall of the connector housing is provided, the engagement during the previous SL PCB insertion the locking hole communicates fixed by inserting the locking piece, the lock piece provides a card edge connector, characterized in that accommodates via a spring engaging hole of the connector housing.

As described above, the present in the invention, provided with a locking hole on each side corner of the connector housing insertion side of the printed circuit board, the bottom wall of the connector housing a locking hole communicating with the locking hole when the printed circuit board insertion or / And it is set as the structure provided in an 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 hole provided in the printed circuit board is communicated with the locking hole provided in the connector housing, and a lock piece is inserted and fixed to be printed. The board can be securely fixed to the connector housing. 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 of the locking hole by the locking piece can be performed 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.

  Delete

  Delete

As before Symbol fixed, the locking portion provided on the printed circuit board is made of the locking hole, it said an engaged portion provided on the connector housing is also a locking hole, these locking holes by inserting the locking piece communicates Is doing . 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 pre-Symbol locking piece accommodating through the spring engaging hole of the connector housing, the locking piece by the elastic return of the spring when the engagement hole of the printed circuit board and the connector housing communicating with inserted into the locking holes of the printed circuit board side Structure .

  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.

  Delete

  Delete

As described above, according to the present invention, provided with a locking hole on each side corner of the connector housing insertion side of the printed circuit board to secure with the locking hole and the locking piece when the printed circuit board inserted Rukakaritomeana has a configuration provided in the lower wall and / or top wall of the connector Pillow grayed a. Therefore, with the terminal and the printed circuit board of the wire end terminal is electrically connected by insertion of the printed circuit board, and fixed through the locking piece with the locking hole formed in the engaging hole and the connector Pillow grayed provided on the printed circuit board , it is possible to reliably fix the printed circuit board to the connector Pillow grayed. 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. Shows the reference embodiment is a sectional view showing a (A) is B-B sectional view of FIG 1, (B) is before the end of the bending rod is pushed PCB state. (A) shows the reference embodiment, (B) in the embodiment shown a side view showing another example of the engaged portion provided in the engaging portion and the connector housing provided on the PCB of the present invention is there. Reference implementation embodiment shows the case with the card edge connector in, (A) is a plan view of the card edge connector in a state where the printed circuit board is inserted, (B) is a perspective view 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 with reference to FIG surface.
1st Embodiment is shown in FIG.1, FIG.2, FIG.4 (B) . 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. 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.

The printed circuit board 30 and the connector housing 11 are fixed as shown in FIG.
As shown in the reference embodiment of FIG. 3, the printed circuit board 30 and the connector housing 11 may be fixed. In other words, locking portions made up of the locking holes 32 are provided at both corners on the connector insertion side of the printed circuit board 30 to be inserted, while both of the above-described two parts are inserted into the lower wall 11b of the connector housing 11 when the printed circuit board 30 is completely inserted. Bending rods 15 that are respectively locked in the corner locking holes 32 are provided as locked portions. 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, the 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 simultaneously with the completion of the insertion. It is made to insert in the hole 32 [FIG. 3 (A)].

As described above, print on both sides corners of the connector housing insertion side of the substrate 30 provided with the engagement portion consisting of the locking hole 32, the bent rod is locked to the locking hole 32 when the printed circuit board 30 inserted 15 The locked portion made of 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.

  Delete

In addition, as shown in FIG. 4A of the reference embodiment , the engaging portion provided on the printed circuit board 30 is provided with concave portions 33 at both corners on the connector insertion side on the lower surface of the printed circuit board 30 and 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 of the said corners 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.
In an embodiment of the present invention, as a locking portion provided on the PCB 30, as shown in FIG. 4 (B), provided with a locking hole 34 on either side corner of the connector insertion side of the printed circuit board 30, a printed circuit board 30 is provided in the lower wall 11b of the connector housing 11 so as to communicate with the locking holes 34 at both corners when inserted, and the cylindrical locking pieces 35 are provided in the communicating locking holes 34, 18 with the connector housing. The printed circuit board 30 and the connector housing 11 are fixed by press-fitting from the outer surface side of the connector 11 .
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. Structure .

5 and 6 show a reference embodiment.
In the reference 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 is used, and the printed circuit board 30 is wider than the connector housing 11 and printed. As shown in FIG. 6, the locked portion (bending bar 43) locked to the locking portions (locking holes 32) provided at both corners of the board 30 on the connector housing insertion side is connected to the lower wall 40b of the case 40 as shown in FIG. that have provided.
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 reference embodiment, the locking portions including the locking holes 32 are provided at the corners on both sides of the printed circuit board 30 on the connector housing insertion side, 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.

  Delete

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 (2)

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,
Said one locking hole is provided on both sides corners of the printed circuit board of the connector housing insertion side, the locking hole in the bottom wall or / and upper wall of the connector housing is provided, the engagement during the previous SL PCB insertion the locking hole communicates fixed by inserting the locking piece, the card edge connector in which the locking piece is characterized in that accommodates via a spring engaging hole of the connector housing. Wire and connected to terminals of the wire harness to opposing inner surfaces of the upper and lower walls of the connector housing are juxtaposed, the terminal on the upper and lower surfaces of the connector insertion side of the printed circuit board of claim 1 being juxtaposed Card edge connector.

Images