Manufacturing method of connector with substrate

Abstract

To provide a connector with a substrate, capable of reducing a load of a circuit substrate related to a press-in of a press-fit terminal into a press-in hole of the circuit substrate.SOLUTION: A manufacturing method of a connector 1 with a substrate, comprises a circuit substrate 3, a housing 10, and a connector 2 having a press-fit terminal 20, and includes a mounting step of the connector 2 into the circuit substrate 3. The press-fit terminal 20 has a compliant part 23 in which width direction both end parts are pressed to an inner peripheral surface of a press-in hole 3a. The compliant part 23 is provided with a penetration hole 25 penetrated in a plate thickness direction. In the mounting step, a press-in direction tip end part in the penetration hole 25 is positioned in the press-in hole 3a at the beginning of contacting the inner peripheral surface, and a press-in direction base end part in the penetration hole 25 is arranged at a press-in direction base end side than the press-in direction base end surface in the circuit substrate 3 in a state of a mounting completion state of the connector 2 to the circuit substrate 3.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a board-mounted connector. [Background technology]

[0002] Conventionally, there have been proposed board-mounted connectors that include a circuit board and a connector that is mounted on the circuit board. In one conventional board-mounted connector, the connector is configured to have a press-fit terminal and a housing that holds the press-fit terminal, and the connector is mounted on the circuit board by pressing a compliant portion of the press-fit terminal into a press-fit hole in the circuit board (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-194636 A [Patent Document 2] JP 2022-183630 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in Patent Document 2, in relation to the press-fitting of a compliant portion of a press-fit terminal into a press-fit hole of a circuit board, the straight portion of the compliant portion is offset between the outside and the inside to reduce the insertion force of the compliant portion into the press-fit hole. However, when the compliant portion is completely pressed into the press-fit hole, the undeformed portion of the compliant portion is disposed within the press-fit hole, which may result in a large load being applied to the press-fit hole and, in turn, the circuit board, causing problems with the circuit board.

[0005] The present invention has been made in consideration of the above-mentioned situation, and its object is to provide a manufacturing method for a board-mounted connector that can reduce the load on a circuit board associated with pressing a press-fit terminal into a press-fit hole in the circuit board. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the manufacturing method of the board-mounted connector according to the present invention has the following features. A method for manufacturing a board-mounted connector including a circuit board and a connector mounted on the circuit board, comprising: The connector includes: a press-fit terminal having one end thereof press-fitted into a press-fit hole provided in the circuit board; a housing for holding the press-fit terminal; The press-fit terminal is a press-fit terminal having a compliant portion at both ends in a width direction of the press-fit terminal, the compliant portion being pressed into contact with an inner peripheral surface of the press-fit hole; The method for manufacturing the substrate-attached connector includes the steps of: mounting the connector on the circuit board; The compliant portion is a through hole is provided which extends in the press-fitting direction and penetrates in a plate thickness direction of the press-fit terminal which is a direction intersecting the press-fitting direction and the width direction, and in the mounting process, a tip end portion of the through hole in the press-fitting direction is located within the press-fitting hole at the beginning of contact with the inner peripheral surface, and when mounting of the connector on the circuit board is completed, a base end portion of the through hole in the press-fitting direction is located on the base end side in the press-fitting direction of the circuit board. It is a manufacturing method for a board-mounted connector. Effect of the Invention

[0007] According to the present invention, in a process of mounting a connector on a circuit board, a tip end portion of the through hole in the press-fit direction is located in the press-fit hole at the beginning of contact between the compliant portion and the inner peripheral surface of the press-fit hole, and a base end portion of the through hole in the press-fit direction is located on the base end side in the press-fit direction of the circuit board in the state where mounting of the connector on the circuit board is completed. Here, when the compliant portion of the press-fit terminal is pressed (inserted) into the press-fit hole of the circuit board, the compliant portion elastically deforms so that the through hole becomes smaller in the width direction. That is, since the tip end portion of the through hole is located in the press-fit hole at the beginning of the contact, the compliant portion can easily deform elastically, and since the base end portion of the through hole is located on the base end side in the press-fit direction of the circuit board in the state where mounting is completed, only the repulsive force of the compliant portion (i.e., the restoring force from elastic deformation) is applied to the inner peripheral surface of the press-fit hole. Thus, according to the present invention, the elastically deformable portion of the compliant portion is positioned within the press-fit hole of the circuit board, so that only a repulsive force is applied to the circuit board, thereby reducing the load on the circuit board associated with pressing the press-fit terminal into the press-fit hole of the circuit board.

[0008] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the preferred embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of a board-attached connector obtained by a method for manufacturing a board-attached connector according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of a connector that constitutes the board-mounted connector shown in FIG. [Diagram 3] FIG. 3 is a perspective view of a housing that constitutes the connector shown in FIG. [Figure 4] FIG. 4 is a front view of a terminal that constitutes the connector shown in FIG. [Diagram 5]FIG. 5 is the first diagram for explaining the method of manufacturing a board-mounted connector, and is a cross-sectional view showing the state of the terminals relative to the board in the middle of mounting the connector on the board. [Figure 6] FIG. 6 is the second diagram for explaining the method of manufacturing the board-mounted connector, and is a cross-sectional view showing the state of the terminals relative to the board when mounting of the connector on the board is completed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A method for manufacturing a board-mounted connector 1 according to an embodiment of the present invention will now be described with reference to the drawings.

[0011] For the sake of convenience, the following definitions are used for the terms "front", "rear", "left", "right", "upper" and "lower" as shown in FIG. 1 and other figures. The "front-rear direction", "left-right direction" and "upper-lower direction" are mutually orthogonal. The upper-lower direction corresponds to the "press-fitting direction" of the present invention, and the press-fitting direction refers to the direction in which the press-fit terminal 20 is pressed into the press-fitting hole 3a of the circuit board 3. In addition, the upper side of the vertical direction corresponds to the "base end side" of the press-fitting direction, and the lower side of the vertical direction corresponds to the "tip side" of the press-fitting direction. The left-right direction corresponds to the "width direction" of the present invention, and the width direction refers to the width direction of the press-fit terminal 20. The front-rear direction corresponds to the "plate thickness direction" of the present invention, and the plate thickness direction refers to the plate thickness direction of the press-fit terminal 20.

[0012] As shown in Fig. 1, the board-mounted connector 1 includes a connector 2 and a circuit board 3 on which the connector 2 is mounted. The connector 2 is a so-called PCB (Printed Circuit Board) connector, and is configured to be able to mate with a mating connector (not shown). The connector 2 also includes a housing 10 and a plurality of press-fit terminals 20. The circuit board 3 is provided with a plurality of press-fit holes 3a, as described below.

[0013] In the board-mounted connector 1, a plurality of press-fit terminals 20 are press-fitted into a plurality of press-fit holes 3a, respectively, and the connector 2 is mounted on the circuit board 3. Then, the connector 2 mounted on the circuit board 3 (i.e., the board-mounted connector 1) is mated with a mating connector, whereby the terminals (not shown) of the mating connector are electrically connected to the conductor pattern (not shown) of the circuit board 3 via the press-fit terminals 20. Below, the connector 2 (housing 10 and press-fit terminals 20) that constitute the board-mounted connector 1, and the circuit board 3 will be described in order.

[0014] First, the housing 10 will be described. The housing 10 has a housing main body 11 formed in a substantially rectangular tubular shape with a bottom, as shown in Figures 2 and 3. The housing main body 11 is integrally formed with a substantially rectangular tubular peripheral wall 12 and a bottom wall 13 that closes the lower end opening of the peripheral wall 12.

[0015] The peripheral wall 12 functions as a so-called hood portion, and a housing (not shown) of a mating connector is fitted into the cylindrical hole. The bottom wall 13 is provided with a terminal holding hole 14 penetrating in the vertical direction, and a press-fit portion 22 of a press-fit terminal 20 (described later) is press-fitted into the terminal holding hole 14, so that the press-fit terminal 20 is held in the housing 10.

[0016] A flange portion 15 that projects outward from the housing 10 is integrally provided at the lower end of the housing main body 11, i.e., the lower end of the bottom wall 13. A fixing protrusion 16 that protrudes downward is provided on the lower end surface of the flange portion 15, and the housing 10 (i.e., the connector 2) is fixed to the circuit board 3 by inserting the fixing protrusion 16 into a fixing hole of the circuit board 3 described below.

[0017] Next, the press-fit terminal 20 will be described. As shown in Fig. 4, the press-fit terminal 20 is formed in a rod-like plate shape that extends in the up-down direction and has a plate thickness in the front-rear direction. The press-fit terminal 20 is provided with a terminal connection portion 21, a press-fit portion 22, and a compliant portion 23.

[0018] The terminal connection portion 21 is provided at the upper end of the press-fit terminal 20, and is a so-called tab-shaped male terminal that is electrically connected to a terminal of a mating connector.

[0019] Press-fit portion 22 is provided between terminal connection portion 21 and compliant portion 23 in the up-down direction, and protrudes in the left-right direction further than other portions (rod-plate-shaped portions). Press-fit portion 22 is press-fitted into terminal holding hole 14 of housing 10, whereby press-fit terminal 20 is held in housing 10.

[0020] The compliant portion 23 is provided at the lower end of the press-fit terminal 20, and is press-fitted into the press-fit hole 3a of the circuit board 3, so that a pair of contact portions 24b, which will be described later, are pressed into contact with the inner circumferential surface of the press-fit hole 3a.

[0021] The compliant portion 23 has a pair of elastic portions 24 that are spaced apart from each other in the left-right direction and extend in the up-down direction. Each elastic portion 24 integrally includes a first inclined portion 24a, a contact portion 24b, and a second inclined portion 24c.

[0022] The pair of first inclined portions 24a are each provided in an upper region of compliant portion 23, and extend obliquely from the top to the bottom so as to be spaced apart from each other in the left-right direction.

[0023] The pair of contact portions 24b are provided in the vertical central region of the compliant portion 23 and extend substantially linearly in the vertical direction so as to vertically connect the first inclined portion 24a and the second inclined portion 24c. The pair of elastic portions 24 are each pressed against the inner circumferential surface of the press-fit hole 3a. The left-right length between the contact surfaces of the pair of contact portions 24b and the inner circumferential surface of the press-fit hole 3a is greater than the diameter of the press-fit hole 3a.

[0024] The pair of second inclined portions 24c are provided in a lower region of compliant portion 23, and extend obliquely from the upper side to the lower side so as to approach each other in the left-right direction.

[0025] In this manner, a substantially elliptical through hole 25 extending in the up-down direction and penetrating in the front-rear direction is defined by providing the pair of first inclined portions 24a, the pair of contact portions 24b, and the pair of second inclined portions 24c, i.e., the pair of elastic portions 24, in the compliant portion 23. A lower apex 26 of the through hole 25 is located below the pair of contact portions 24b, and an upper apex 27 of the through hole 25 is located above the pair of contact portions 24b.

[0026] As a result, in the process of mounting the connector 2 on the circuit board 3 described below, when the pair of contact portions 24b initially come into contact with the inner surface of the press-fit hole 3a, the lower apex 26 of the compliant portion 23 is positioned within the press-fit hole 3a (see Figure 5), and when the mounting of the connector 2 on the circuit board 3 is complete, the upper apex 27 of the through hole 25 is positioned above the upper end surface of the circuit board 3 (see Figure 6).

[0027] In addition, when the compliant portion 23 configured as described above is pressed (inserted) into the press-fit hole 3a of the circuit board 3, it elastically deforms so that the through hole 25 becomes smaller in the left-right direction, i.e., so that the pair of elastic portions 24 approach each other in the left-right direction.

[0028] Next, the circuit board 3 will be described. The circuit board 3 is formed, for example, in a substantially rectangular flat plate shape. The circuit board 3 is provided with a plurality of press-fit holes 3a into which the press-fit terminals 20 of the connector 2 are respectively press-fitted (see FIGS. 5 and 6). A conductor pattern (not shown) is also formed on the circuit board 3, and the press-fit terminals 20 press-fitted into the press-fit holes 3a are electrically connected to the conductor pattern. The circuit board 3 is also provided with fixing holes (not shown) into which the fixing protrusions 16 of the housing 10 are inserted, and the housing 10 (i.e., the connector 2) is fixed to the circuit board 3 by inserting the fixing protrusions 16 into the fixing holes.

[0029] The above has described the connector 2 (the housing 10 and the press-fit terminals 20) and the circuit board 3 that constitute the board-mounted connector 1. Next, a method for manufacturing the board-mounted connector 1 will be described.

[0030] First, the press-fit portions 22 of the multiple press-fit terminals 20 are press-fitted into the multiple terminal holding holes 14 of the housing 10. As a result, the press-fit terminals 20 are held in the housing 10, and the connector 2 is completed.

[0031] Next, the compliant portions 23 of the press-fit terminals 20 in the connector 2 are press-fitted into the press-fit holes 3a of the circuit board 3, respectively, and the fixing protrusions 16 of the housing 10 are inserted into the fixing holes of the circuit board 3. This completes the mounting of the connector 2 on the circuit board 3 and the assembly of the board-mounted connector 1.

[0032] In the process of mounting connector 2 on circuit board 3, i.e., in the process of pressing compliant portion 23 into press-fit hole 3a, lower apex 26 of through hole 25 is located within press-fit hole 3a at the beginning of contact between compliant portion 23 (i.e., pair of contact portions 24b) and the inner circumferential surface of press-fit hole 3a (see FIG. 5). Then, in the state where mounting of connector 2 on circuit board 3 is completed, i.e., where compliant portion 23 is pressed into press-fit hole 3a, upper apex 27 of through hole 25 is located above the upper end surface of circuit board 3 (see FIG. 6).

[0033] As described above, according to this embodiment, lower apex 26 of through hole 25 is located within press-fit hole 3a at the beginning of the contact, so that compliant portion 23 can easily deform elastically, and in the mounting completed state, upper apex 27 of through hole 25 is located above the upper end surface of the circuit board (in other words, upper apex 27 of through hole 25 is not located within press-fit hole 3a), so that only the repulsive force of compliant portion 23 (i.e., the restoring force from elastic deformation) is applied to the inner circumferential surface of press-fit hole 3a. That is, according to this embodiment, elastically deformable portions of compliant portion 23 (particularly, pair of contact portions 24b that are easily elastically deformed) are located within press-fit hole 3a of circuit board 3, so that only the repulsive force is applied to circuit board 3, and therefore the load on circuit board 3 associated with press-fitting press-fit terminal 20 into press-fit hole 3a can be reduced.

[0034] Furthermore, according to this embodiment, the length between each contact surface of a pair of contact portions 24b and the inner surface of the press-fit hole 3a is larger than the hole diameter of the press-fit hole 3a, thereby improving the connection reliability between the press-fit terminal 20 (i.e., the connector 2) and the circuit board 3.

[0035] Furthermore, according to this embodiment, the pair of contact portions 24b are positioned above the lower apex 26 of the through hole 25 and below the upper apex 27 of the through hole 25, so that only the intended repulsive force is applied to the circuit board 3, thereby reducing the load on the circuit board 3 associated with the pressing of the press-fit terminal 20 into the press-fit hole 3a of the circuit board 3.

[0036] Furthermore, according to this embodiment, since through-hole 25 has a substantially elliptical shape, adjustment of the elastic deformation of compliant portion 23 (for example, the amount of elastic deformation, etc.) can be easily performed.

[0037] Furthermore, according to this embodiment, not only can the load on the circuit board 3 associated with the press-fitting of the press-fit terminal 20 into the press-fit hole 3a be reduced, but also the insertion force of the press-fit terminal 20 into the press-fit hole 3a can be easily adjusted.

[0038] <Other forms> The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0039] Here, the features of the embodiments of the manufacturing method for the board-attached connector according to the present invention described above will be briefly summarized and listed in the following [1] to [4].

[0040] [1] A method for manufacturing a board-mounted connector (1) including a circuit board (3) and a connector (2) mounted on the circuit board (3), comprising: The connector (2) is a press-fit terminal (20) whose one end side (lower side) is press-fitted into a press-fit hole (3a) provided in the circuit board (3); a housing (10) that holds the press-fit terminal (20); The press-fit terminal (20) is a compliant portion (23) in which both ends (a pair of contact portions 24b) of the press-fit terminal (20) in a width direction (left-right direction) that is a direction intersecting a press-fitting direction (up-down direction) into the press-fit hole (3a) are pressed into contact with an inner peripheral surface of the press-fit hole (3a); The method for manufacturing the board-mounted connector (1) includes the steps of: The method includes a step of mounting the connector (2) on the circuit board (3), The compliant portion (23) is a through hole (25) is provided which extends in the press-fit direction (up-down direction) and penetrates in a plate thickness direction (front-rear direction) of the press-fit terminal (20), which is a direction intersecting the press-fit direction and the width direction, and in the mounting process, a tip end portion (lower apex portion 26) of the through hole (25) in the press-fit direction is located within the press-fit hole (3a) at the beginning of contact with the inner peripheral surface, and when mounting of the connector (2) to the circuit board (3) is completed, a base end portion (upper apex portion 27) of the through hole (25) in the press-fit direction is positioned on the base end side (upper side) in the press-fit direction of the circuit board (3) relative to a base end side surface (upper end surface) in the press-fit direction; A method for manufacturing a board-mounted connector (1).

[0041] According to the configuration [1], in the mounting process of the connector on the circuit board, the tip end of the through hole in the press-fit direction is located in the press-fit hole at the beginning of contact between the compliant portion and the inner peripheral surface of the press-fit hole, and in the completed mounting state of the connector on the circuit board, the base end of the through hole in the press-fit direction is located on the base end side in the press-fit direction of the circuit board relative to the base end side surface in the press-fit direction. Here, when the compliant portion of the press-fit terminal is pressed (inserted) into the press-fit hole of the circuit board, the compliant portion elastically deforms so that the through hole becomes smaller in the width direction. That is, since the tip end of the through hole is located in the press-fit hole at the beginning of the contact, the compliant portion can easily deform elastically, and since the base end of the through hole is located on the base end side in the press-fit direction relative to the base end side surface of the circuit board in the completed mounting state, only the repulsive force of the compliant portion (i.e., the restoring force from elastic deformation) is applied to the inner peripheral surface of the press-fit hole. Thus, with the above configuration, the elastically deformable portion of the compliant portion is positioned within the press-fit hole of the circuit board, so that only a repulsive force is applied to the circuit board, thereby reducing the load on the circuit board associated with pressing the press-fit terminal into the press-fit hole of the circuit board.

[0042] [2] A method for manufacturing the board-attached connector (1) described in [1] above, The compliant portion (23) is a pair of elastic portions (24) spaced apart from each other in the width direction and extending in the press-fitting direction to define the through hole (25); The pair of elastic portions (24) are a pair of first inclined portions (24a) located on the base end side (upper side) in the press-fitting direction and extending from the base end side (upper side) toward the tip end side (lower side) so as to be separated from each other in the width direction (left-right direction); a pair of second inclined portions (24c) located on the tip side (lower side) in the press-fitting direction and extending from the base end side (upper side) toward the tip side (lower side) so as to approach each other in the width direction (left-right direction); a pair of contact portions (24b) extending substantially linearly along the press-fitting direction (vertical direction) so as to connect the pair of first inclined portions (24a) and the pair of second inclined portions (24c) in the press-fitting direction, and each being pressed against the inner circumferential surface, a length between each of the pair of contact portions (24b) and the inner circumferential surface is greater than a diameter of the press-fit hole (3a); A method for manufacturing a board-mounted connector (1).

[0043] According to the configuration [2] above, the length between each contact surface of the pair of contact portions and the inner surface of the press-fit hole is larger than the hole diameter of the press-fit hole, thereby improving the connection reliability between the press-fit terminal and the circuit board.

[0044] [3] A method for manufacturing the board-attached connector (1) described in [2] above, The tip portion (lower apex portion 26) is located on the tip side (lower side) of the pair of contact portions (24b), The base end portion (upper apex portion 27) is located on the base end side (upper side) of the pair of contact portions (24b). A method for manufacturing a board-mounted connector (1).

[0045] According to the configuration [3] above, the pair of contact portions are located closer to the base end in the press-fit direction than the tip end of the through hole, and also closer to the tip end in the press-fit direction than the base end of the through hole. This allows only the intended repulsive force to be applied to the circuit board, thereby reducing the load on the circuit board associated with pressing the press-fit terminal into the press-fit hole of the circuit board.

[0046] [4] A method for manufacturing the board-attached connector (1) according to any one of the above [1] to [3], The through hole (25) is generally elliptical in shape. A method for manufacturing a board-mounted connector (1).

[0047] According to the above configuration [4], the through hole has a substantially elliptical shape, which facilitates adjustment of the elastic deformation of the compliant portion (for example, the amount of elastic deformation, etc.). [Explanation of symbols]

[0048] 1 PCB-mounted connector 2 Connector 3 Circuit Board 3a Press-fit hole 10. Housing 20 Press-fit terminal 23 Compliant Department 24 Elastic part 24a 1st slope part 24b Contact part 24c 2nd slope 25 Through hole 26 Lower top 27 Upper top

Claims

1. A method for manufacturing a board-mounted connector including a circuit board and a connector mounted on the circuit board, comprising: The connector comprises: a press-fit terminal having one end thereof press-fitted into a press-fit hole provided in the circuit board; a housing for holding the press-fit terminal; The press-fit terminal is a press-fit terminal having a compliant portion at both ends in a width direction of the press-fit terminal, the compliant portion being pressed into contact with an inner peripheral surface of the press-fit hole; The method for manufacturing the substrate-attached connector includes the steps of: mounting the connector on the circuit board; The compliant portion is a through hole is provided which extends in the press-fit direction and penetrates in a plate thickness direction of the press-fit terminal which is a direction intersecting the press-fit direction and the width direction, and in the mounting process, a tip end portion of the through hole in the press-fit direction is located within the press-fit hole at the beginning of contact with the inner peripheral surface, and when mounting of the connector to the circuit board is completed, a base end portion of the through hole in the press-fit direction is located on the base end side in the press-fit direction of the circuit board. A method for manufacturing a board-mounted connector.

2. A method for manufacturing the board-attached connector according to claim 1, The compliant portion is a pair of elastic portions spaced apart from each other in the width direction and extending in the press-fitting direction to define the through hole; The pair of elastic portions are a pair of first inclined portions located on the base end side in the press-fitting direction and extending from the base end side toward the tip end side so as to be separated from each other in the width direction; a pair of second inclined portions located on the tip side in the press-fitting direction and extending from the base end side toward the tip side so as to approach each other in the width direction; a pair of contact portions extending substantially linearly along the press-fitting direction so as to connect the pair of first inclined portions and the pair of second inclined portions in the press-fitting direction, and each of the contact portions being pressed against the inner circumferential surface, a length between each of the pair of contact portions and the inner circumferential surface is greater than a diameter of the press-fit hole; A method for manufacturing a board-mounted connector.

3. A method for manufacturing a board-mounted connector according to claim 2, comprising the steps of: the tip portion is located on the tip side of the pair of contact portions, The base end portion is located closer to the base end than the pair of contact portions. A method for manufacturing a board-mounted connector.

4. A method for manufacturing the board-attached connector according to any one of claims 1 to 3, The through hole is generally elliptical in shape. A method for manufacturing a board-mounted connector.

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