JP5763939B2 - Connector fixing structure - Google Patents

Description

  The present invention relates to a connector fixing structure for fixing a connector to a board such as an electronic circuit board mounted on an automobile or the like.

  Conventionally, as a connector fixing structure for fixing a connector used in an optical fiber communication system to a substrate such as an electronic circuit substrate, there is the following.

  For example, a connector fixing structure is known in which a metal pin (fixed terminal) protruding from a connector is attached to a substrate, and the tip of the metal pin protruding from the substrate is soldered. Further, there is known a connector fixing structure in which a connector having screw holes is fixed to a substrate having board-side screw holes by screws (for example, see Patent Document 1).

JP 2001-296455 A (pages 3 to 4 and FIGS. 1 to 3)

  However, in the former connector fixing structure using metal pins, if a screw is used instead of the metal pin, the shape of the screw and the metal pin is different, so that the connector cannot be fixed to the board with the screw.

  On the other hand, in the connector fixing structure using the latter screw, if the metal pin is used instead of the screw, the shape of the screw and the metal pin is different. Therefore, the metal is inserted in the board side screw hole or the screw hole through which the screw is inserted. The pin is not stable. For this reason, the position of the connector on the substrate is not stable, which is insufficient to secure the strength (fixing strength) for fixing the connector to the substrate.

  Accordingly, an object of the present invention is to provide a connector fixing structure capable of fixing a connector to a substrate using any of a fixing terminal such as a metal pin and a screw while ensuring the fixing strength between the substrate and the connector.

In order to solve the above-described problems, the present invention has the following features. First, a first feature of the present invention is a connector (connector 200) in which a screw hole (connector-side screw hole 212) to which a screw (screw 10) can be fixed is formed on a substrate (substrate 100) on which a circuit pattern is printed. ) Is fixed to the connector, the fixing leg is provided with a positioning protrusion together with the screw hole, and the board is provided with the screw. A board-side screw hole into which the connector can be inserted and a positioning protrusion insertion hole into which the positioning protrusion is inserted are provided. The screw hole fixes a connector to the board and is electrically connected to the board. The gist is that a terminal fixing part (terminal fixing part 230) to which the pin 20) is press-fitted and fixed is provided.

  According to this feature, the terminal fixing portion is provided in the screw hole. Thus, when fixing the connector to the board using a fixed terminal such as a metal pin, the tip of the fixed terminal that is press-fitted and fixed to the terminal fixing part protrudes from the board, and the tip of the fixed terminal that protrudes from the board and the board Can be fixed to the board by soldering. On the other hand, when the connector is fixed to the substrate using a screw, the connector can be fixed to the substrate by screwing the screw into the screw hole through the substrate. Therefore, even if the shape of the fixed terminal is different from that of the screw, the connector can be fixed to the board using either the fixed terminal or the screw.

  Further, by fixing the fixed terminal to the terminal fixing portion, the position of the connector on the substrate is stabilized, and the fixing strength between the substrate and the connector can be secured. Furthermore, since the fixing terminal can be assembled by press-fitting and fixing to the terminal fixing portion in advance before attaching the connector to the board, the number of parts handled during processing for fixing the connector to the board or during transportation of the connector is not increased. .

In the present invention, the terminal fixing portion is provided inside the opening edge of the screw hole, and a terminal receiving portion (pin receiving portion 231) for receiving the fixed terminal, and the fixing terminal is inserted into the screw hole. The gist of the present invention is to include a terminal press-fitting portion (pin press-fitting portion 232) provided in front of the terminal receiving portion with respect to the insertion direction (insertion direction I) and into which the fixed terminal is press-fitted.

  According to this feature, the fixed terminal is received by the terminal receiving portion, and the fixed terminal is press-fitted into the terminal press-fit portion. Thereby, when fixing a connector to a board | substrate using a fixed terminal, the position of the connector on a board | substrate can be stabilized more reliably, and the fixing strength of a board | substrate and a connector can be improved.

The gist of the present invention is that the terminal receiving portion is cut out from the inside of the opening edge of the screw hole to the outside of the screw hole.

  According to this feature, when the fixed terminal is received by the notched terminal receiving portion, the position of the connector on the board is more reliably stabilized when the connector is fixed to the board using the fixed terminal. .

In the present invention, the fixed terminal is formed integrally with the contact protrusion (contact protrusion 21) that contacts the terminal receiving portion and the contact protrusion, and the main body is press-fitted into the terminal press-fit portion. And a fixing portion (fixing portion 23) that is provided on the distal end side of the main body portion and is inserted into the board-side screw hole and soldered on the back side of the substrate. And

  According to this feature, the abutting protrusion abuts on the terminal receiving portion, the main body portion is press-fitted into the terminal press-fitting portion, and the fixing portion is soldered on the back side of the substrate. As a result, the fixed terminal can be assembled by being press-fitted and fixed to the terminal fixing portion in advance before the connector is placed on the board, and the number of parts handled during processing of the connector, transportation of the connector, etc. is not increased.

The gist of the present invention is that the main body portion is formed with press-fitting ribs (press-fitting ribs 22A and 22B) that protrude outward from the main body portion and are press-fitted into the inner wall of the terminal press-fitting portion. In addition, the fixed terminal is formed in a plate shape, and the press-fitting rib includes a first press-fitting rib provided on both sides in the width direction of the plate-like fixed terminal, and the first press-fitting rib. Projecting outwardly in the width direction from the first press-fitting rib on the abutting projection side, and configured by second press-fitting ribs provided on both sides in the width direction of the plate-like fixed terminal. Features.

  According to such a feature, when the fixed terminal is press-fitted into the terminal fixing part, the press-fitting rib can be caught by the inner wall of the terminal press-fitting part and the fixed terminal can be prevented from coming off from the terminal fixing part. For this reason, when fixing a connector to a board | substrate using a fixed terminal, the position of the connector on a board | substrate can be stabilized more reliably, and the fixing strength of a board | substrate and a connector can be improved.

  According to the feature of the present invention, by providing the terminal fixing portion in the screw hole, the connector can be fixed to the board regardless of the shape of the fixed terminal and the screw, or using either the fixed terminal or the screw. Can do. Further, by fixing the fixed terminal to the terminal fixing portion, the position of the connector on the substrate is stabilized, and the fixing strength between the substrate and the connector can be secured.

FIG. 1 is an exploded perspective view showing a connector fixing structure 1 according to the present embodiment. FIG. 2 is an assembled perspective view showing the connector fixing structure 1 according to the present embodiment. FIG. 3 is a cross-sectional view showing the connector fixing structure 1 taken along line AA in FIG. FIG. 4 is a perspective view showing the vicinity of the fixed leg portion 210A of the connector 200 according to the present embodiment. Fig.5 (a) is a top view which shows the upper surface view of the connector 200 which concerns on this embodiment, FIG.5 (b) is an enlarged plan view which shows the inside of the dashed-dotted line of Fig.5 (a). FIG. 6A is a cross-sectional view showing a side view of the connector 200 according to the present embodiment, and FIG. 6B is an enlarged cross-sectional view showing the inside of an alternate long and short dash line in FIG. FIG. 7A is a perspective view showing the ground pin 20 according to this embodiment, and FIG. 7B is a side view showing the ground pin 20 according to this embodiment. FIG. 8 is a perspective view showing the lower part of the connector fixing structure 1 according to the present embodiment. FIG. 9 is a cross-sectional view (corresponding to the line AA in FIG. 2) showing the connector fixing structure 1 according to the present embodiment.

  Next, an embodiment of a connector fixing structure according to the present invention will be described with reference to the drawings. Specifically, (1) the configuration of the connector fixing structure 1, (2) the configuration of the connector side screw hole 212, (3) the configuration of the ground pin 20, (4) the description of the fixing method of the connector 200, (5) the operation Effects, (6) Other embodiments will be described.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Configuration of Connector Fixing Structure 1 First, the configuration of the connector fixing structure 1 according to the present embodiment will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a connector fixing structure 1 according to the present embodiment. FIG. 2 is an assembled perspective view showing the connector fixing structure 1 according to the present embodiment. FIG. 3 is a cross-sectional view showing the connector fixing structure 1 taken along line AA in FIG. FIG. 4 is a perspective view showing the vicinity of the fixed leg portion 210A of the connector 200 according to the present embodiment.

  The connector fixing structure 1 according to the present invention is a structure for fixing a connector 200 in which a connector-side screw hole 212 capable of fixing a screw 10 is formed on a substrate 100 on which a circuit pattern (not shown) is printed. The connector-side screw hole 212 is provided with a terminal fixing portion 230 for fixing the connector 200 to the substrate 100 and for press-fitting and fixing the ground pin 20 electrically connected to the substrate 100.

  Details of the board 100 and the connector 200 used in the connector fixing structure 1 according to the present invention will be described below.

  As shown in FIGS. 1-4, the board | substrate 100 has plate shape and the circuit pattern (not shown) is printed on both surfaces. A board-side screw hole 110 into which the screw 10 can be inserted and a positioning protrusion insertion hole 120 into which a positioning protrusion 211 provided on the connector 200 is inserted are formed in the board 100. A connector abutting surface 130 with which the connector 200 abuts is provided on the upper surface of the substrate 100.

  The connector 200 is used in an optical fiber communication system mounted on an automobile or the like. The connector 200 is generally configured by a connector main body 210 that supports board terminals (not shown) connected to the board 100, and a fitting hood portion 220 that is formed integrally with the connector main body 210 and into which a mating terminal is fitted. Is done.

  As shown in FIG. 4, the connector main body 210 is provided with a pair of fixed leg portions 210 </ b> A and 210 </ b> B (see FIG. 5A), and these pair of fixed leg portions 210 </ b> A and 210 </ b> B are in contact with the connector of the board 100. Each is fixed to the surface 130. In addition, since a pair of fixed leg part 210A, 210B is a structure substantially the same, in the following description, one fixed leg part 210A is demonstrated.

  The fixed leg 210A is provided with a cylindrical positioning protrusion 211 that protrudes toward the substrate 100 (downward) and a connector-side screw hole 212 to which the screw 10 can be fixed. The positioning protrusion 211 positions the connector 200 on the connector contact surface 130 of the substrate 100 by being inserted into the positioning protrusion insertion hole 120 of the substrate 100.

(2) Configuration of Connector Side Screw Hole 212 Next, the configuration of the connector side screw hole 212 will be described with reference to FIGS. Fig.5 (a) is a top view which shows the upper surface view of the connector 200 which concerns on this embodiment, FIG.5 (b) is an enlarged plan view which shows the inside of the dashed-dotted line of Fig.5 (a). FIG. 6A is a cross-sectional view showing a side view of the connector 200 according to the present embodiment, and FIG. 6B is an enlarged cross-sectional view showing the inside of an alternate long and short dash line in FIG.

  As shown in FIGS. 5 and 6, the connector side screw hole 212 is provided with a terminal fixing portion 230 to which the ground pin 20 (fixed terminal) is press-fitted and fixed. The terminal fixing portion 230 includes a pin receiving portion 231 (terminal receiving portion) that receives the ground pin 20 and a pin press-fit portion 232 (terminal press-fit portion) into which the ground pin 20 is press-fitted.

  The pin receiving portion 231 is provided inside the opening edge of the connector-side screw hole 212, that is, on the front side in the insertion direction I in which the ground pin 20 is inserted into the connector-side screw hole 212. The pin receiving portion 231 has a shape corresponding to the ground pin 20 (abutting protrusion 21 described later). In the present embodiment, the pin receiving portion 231 is cut out in a substantially rectangular shape from the inside of the opening edge of the connector side screw hole 212 to the outside of the connector side screw hole 212.

  The pin press-fit portion 232 is provided on the substrate 100 side of the pin receiving portion 231, that is, in front of the pin receiving portion 231 with respect to the insertion direction I. In the present embodiment, the pin press-fit portion 232 is configured by a part of the inner wall of the connector-side screw hole 212.

(3) Configuration of Ground Pin 20 Next, the configuration of the ground pin 20 (fixed terminal) described above will be described with reference to FIG. FIG. 7A is a perspective view showing the ground pin 20 according to this embodiment, and FIG. 7B is a side view showing the ground pin 20 according to this embodiment.

  As shown in FIG. 7, the ground pin 20 has a plate shape and is formed of a conductive member (for example, metal). The ground pin 20 is press-fitted and fixed in the connector-side screw hole 212 to fix the connector 200 to the board 100. The ground pin 20 is electrically connected to a predetermined circuit (not shown) printed on the substrate 100, and is grounded, for example.

  Such a ground pin 20 includes a contact protrusion 21 that contacts the pin receiving portion 231, a body portion 22 that is formed integrally with the contact protrusion 21 and press-fitted into the pin press-fit portion 232, The fixing part 23 is provided on the front end side and inserted into the board-side screw hole 110 and soldered on the back side of the board 100. The main body portion 22 is formed with press-fit ribs 22 </ b> A and 22 </ b> B that protrude outward from the main body portion 22 and press-fit into the inner wall of the pin press-fit portion 232.

  The press-fit rib 22A protrudes outward from the press-fit rib 22B. The press-fitting rib 22A is provided closer to the abutting protrusion 21 than the press-fitting rib 22B. The press-fitting rib 22A includes an inclined surface 22A-1 that is inclined with respect to the insertion direction I, and an orthogonal surface 22A-2 that is continuous with the inclined surface 22A-1 and is substantially orthogonal to the insertion direction I.

  The press-fit rib 22B is provided closer to the fixed portion 23 than the press-fit rib 22A. The press-fitting rib 22B includes an inclined surface 22B-1 that is inclined with respect to the insertion direction I, and an orthogonal surface 22B-2 that is continuous with the inclined surface 22B-1 and substantially orthogonal to the insertion direction I.

  Such press-fitting ribs 22 </ b> A and 22 </ b> B are caught when the ground pin 20 is press-fitted into the terminal fixing part 230, and are caught on the inner wall of the pin press-fitting part 232 of the terminal fixing part 230. Can be prevented.

(4) Description of Fixing Method of Connector 200 Next, a method of fixing the connector 200 to the substrate 100 will be described with reference to FIGS. FIG. 8 is a perspective view showing the lower part of the connector fixing structure 1 according to the present embodiment. FIG. 9 is a cross-sectional view (corresponding to the line AA in FIG. 2) showing the connector fixing structure 1 according to the present embodiment.

  First, when the ground pin 20 is press-fitted into the terminal fixing portion 230, the contact protrusion 21 of the ground pin 20 contacts the pin receiving portion 231 of the terminal fixing portion 230. At this time, the main body portion 22 of the ground pin 20 is disposed in the pin press-fit portion 232 of the terminal fixing portion 230, and the press-fit ribs 22 </ b> A and 22 </ b> B are hooked on the inner wall of the pin press-fit portion 232. It is press-fitted and fixed. Note that the fixing portion 23 of the ground pin 20 protrudes from the connector-side screw hole 212.

  Then, the fixing portion 23 of the ground pin 20 is inserted into the board-side screw hole 110 provided in the board 100 while the positioning protrusion 211 provided in the connector 200 is inserted into the positioning protrusion insertion hole 120 provided in the board 100.

  Then, as shown in FIG. 8, the connector 200 can be fixed to the substrate 100 by soldering (S) from the back side of the substrate 100 to the fixing portion 23 of the ground pin 20 protruding from the substrate-side screw hole 110. . At this time, the ground pin 20 is electrically connected to a predetermined circuit (not shown) printed on the substrate 100 to enable grounding.

  Here, when the connector 200 is fixed to the substrate 100, it is not always necessary to perform soldering using the ground pins 20, and as shown in FIG. 9, the substrate-side screw hole 110 and the connector are connected from the back side of the substrate 100. The connector 200 may be fixed to the substrate 100 by inserting the screw 10 into the side screw hole 212.

(5) Action / Effect In the present embodiment described above, the terminal fixing portion 230 is provided in the connector-side screw hole 212. As a result, when the connector 200 is fixed to the substrate 100 using the ground pin 20, the tip (fixing portion 23) of the ground pin 20 press-fitted and fixed to the terminal fixing portion 230 extends from the substrate-side screw hole 110 of the substrate 100. The connector 200 can be fixed to the substrate 100 by soldering the tip of the ground pin 20 protruding from the substrate-side screw hole 110 and the substrate 100. When the connector 200 is fixed to the board 100 using the screw 10, the connector 200 can be fixed to the board 100 by screwing the screw 10 into the connector side screw hole 212 through the board side screw hole 110. Therefore, even if the shape of the ground pin 20 and the screw 10 is different, the connector 200 can be fixed to the substrate 100 using either the ground pin 20 or the screw 10. That is, the connector-side screw hole 212 can correspond to either the ground pin 20 or the screw 10.

  Further, since the ground pin 20 is press-fitted and fixed to the terminal fixing portion 230, the position of the connector 200 on the substrate 100 is stabilized, and the fixing strength between the substrate 100 and the connector 200 can be secured. Further, since the ground pin 20 can be assembled by being press-fitted and fixed to the terminal fixing portion 230 in advance before the connector 200 is placed on the substrate 100, during the processing for fixing the connector 200 to the substrate 100, the transportation of the connector 200, and the like. The number of parts handled is not increased.

  In the present embodiment, the ground pin 20 is received by the pin receiving portion 231, and the ground pin 20 is press-fitted into the pin press-fit portion 232. Accordingly, when the connector 200 is fixed to the substrate 100 using the ground pins 20, the position of the connector 200 on the substrate 100 is more reliably stabilized, and the fixing strength between the substrate 100 and the connector 200 can be improved. .

  In the present embodiment, when the ground pin 20 is received by the notched pin receiving portion 231, the position of the connector 200 on the board 100 is fixed when the connector 200 is fixed to the board 100 using the ground pin 20. Is more stable.

  In this embodiment, the abutting protrusion 21 abuts on the pin receiving portion 231, the main body portion 22 is press-fitted into the pin press-fitting portion 232, and the fixing portion 23 is soldered on the back side of the substrate 100. As a result, the ground pin 20 can be assembled by being press-fitted and fixed in advance to the terminal fixing portion 230 before the connector 200 is attached to the board 100, and the number of components handled when the connector 200 is processed or when the connector 200 is transported is increased. There is no.

  In the present embodiment, the press-fitting ribs 22 </ b> A and 22 </ b> B can prevent the ground pin 20 from being pulled out of the terminal fixing part 230 by being caught on the inner wall of the pin press-fitting part 232 when the ground pin 20 is press-fitted into the terminal fixing part 230. . For this reason, when the connector 200 is fixed to the substrate 100 using the ground pins 20, the position of the connector 200 on the substrate 100 is more reliably stabilized, and the fixing strength between the substrate 100 and the connector 200 can be improved. .

(6) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the connector 200 has been described as being used in an optical fiber communication system mounted on an automobile or the like, but is not limited to this, and a connector (female connector or male connector) provided with an electric wire terminal. It may be.

  In addition, the pin receiving portion 231 has been described as being cut out into a substantially rectangular shape, but is not limited thereto, and any shape corresponding to the contact protrusion 21 may be used.

  Further, although the pin press-fit portion 232 has been described as being constituted by a part of the inner wall of the connector-side screw hole 212, the present invention is not limited to this. For example, a groove or the like in which the main body portion 22 of the ground pin 20 can be press-fitted and fixed may be formed in a part of the inner wall of the connector-side screw hole 212, and this groove may constitute the pin press-fit portion 232.

  Further, although the description has been given assuming that the fixed terminal is the ground pin 20 that is conductively connected to a predetermined circuit printed on the substrate 100, the present invention is not limited to this, and a connector other than the ground pin may be connected to the substrate 100. What is necessary is that 200 can be fixed.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Connector fixing structure 10 ... Screw 20 ... Ground pin (fixed terminal)
DESCRIPTION OF SYMBOLS 21 ... Abutment protrusion 22 ... Main-body part 22A, 22B ... Press-fit rib 23 ... Fixed part 100 ... Board | substrate 200 ... Connector 212 ... Connector side screw hole 230 ... Terminal fixing part 231 ... Pin receiving part (terminal receiving part)
232 ... Pin press-fit part (terminal press-fit part)

Claims (2)

A connector fixing structure for fixing a connector on which a screw hole capable of fixing a screw is formed on a circuit board printed with a circuit pattern,
The connector is provided with a fixed leg, and the fixed leg is provided with a positioning projection together with the screw hole,
The board is provided with a board-side screw hole into which the screw can be inserted and a positioning protrusion insertion hole into which the positioning protrusion is inserted,
The screw hole is provided with a terminal fixing portion for fixing and fixing the connector to the substrate and press-fitting and fixing a fixed terminal electrically connected to the substrate ,
The terminal fixing portion is provided on the inner side of the opening edge of the screw hole, and receives the fixed terminal from the terminal receiving portion with respect to the insertion direction in which the fixed terminal is inserted into the screw hole. And a terminal press-fitting portion into which the fixed terminal is press-fitted.
The fixed terminal includes a contact protrusion that contacts the terminal receiving portion, a main body portion that is formed integrally with the contact protrusion, and that is press-fitted into the terminal press-fit portion; A fixing portion that is inserted into the board-side screw hole and soldered on the back side of the board,
The main body portion is formed with a press-fitting rib that protrudes outward from the main body portion and is press-fitted into the inner wall of the terminal press-fitting portion.
The fixed terminal is formed in a plate shape, and the press-fitting rib includes a first press-fit rib provided on both sides in the width direction of the plate-shaped fixed terminal, and the press-fit rib more than the first press-fit rib. It is characterized in that it is composed of second press-fit ribs that protrude outward in the width direction from the first press-fit ribs on the contact projection side and are provided on both sides in the width direction of the plate-like fixed terminals. Connector fixing structure. The connector fixing structure according to claim 1 ,
The connector fixing structure, wherein the terminal receiving portion is notched from the inside of the opening edge of the screw hole to the outside of the screw hole.

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