JP5930652B2 - Circuit assembly, method of assembling circuit assembly, electrical connector - Google Patents

Description

  The present invention relates to a circuit assembly, a method for assembling a circuit assembly, and an electrical connector.

  There are various types of circuit assemblies composed of a board connector having a plurality of contacts for connecting between the board and the board. For example, a board connector described in Patent Document 1 below and a circuit assembly having the same A solid is known.

  Patent Document 1 states that “a printed wiring board 2 in which a signal line and a ground line are formed on at least one surface of an insulating substrate, and a board used to electrically connect the printed wiring board 2 and the FPC 10. A plurality of pairs of signal lines that are in electrical contact with the board-side electrical contact portion of the signal contact housed in the board connector 15. The ground line located on the front side of the board connector 15 fixed to the board surface 2 and electrically connected to the board-side electrical contact portion of the ground contact accommodated in the board connector 15 is located behind the board connector 15. There is a description of “a circuit body connection structure 1” which is located on the side and the signal line and the ground line face each other.

JP 2007-213998 A

  2. Description of the Related Art In recent years, remarkable progress in automation has been achieved in the mounting of electronic components / members (wiring boards, etc.) on circuit boards in the manufacturing process of various electrical products. However, for example, in the circuit assembly described in Patent Document 1, the wiring board is mounted on the circuit board via a board connector mounted on the circuit board. At this time, since it is necessary to insert the wiring board from the board connector insertion port arranged on the substantially vertical surface of the circuit board, the mounting of the wiring board on the circuit board is extremely difficult to automate. Yes.

  Further, a ZIF connector having a no-load insertion function (so-called zero insertion force socket) is provided when a circuit board is inserted into a circuit board connector as described in Patent Document 1. When used, the ZIF lock connector body such as a slider must be inserted into the connector body, and from this point of view, the mounting of the wiring board on the circuit board is extremely difficult.

  An object of the present invention is to provide a circuit assembly, a circuit assembly assembling method, and an electrical connector that can realize automation of mounting of a wiring board on a circuit board.

  One aspect of the present invention is a circuit assembly, which is a wiring board having fixed means at both ends, an electrical connector, a housing having electrical insulation, the housing having an open surface, and a plurality of housings. A conductive contact that is held by the housing and protrudes while the central portion thereof is inclined outward from the open surface, and provided at both ends of the housing corresponding to the fixing means of the wiring board An electrical connector having a fixing means, and the fixing means is fitted to the fixed means of the wiring board when the electrical connector and the wiring board are coupled.

  In one embodiment, when the fixing unit is fitted to the fixed unit, the fixing unit applies forces opposite to each other in the lateral direction from the center of the circuit board.

  In one embodiment, the pressing member is disposed on the wiring board, and is provided with the pressing member that is fixed to the housing and presses the wiring board toward the housing.

  In one embodiment, the housing has at least a first side wall portion and a second side wall portion that are arranged to face each other, and an open surface is defined by the first side wall portion and the second side wall portion, and the contact surface The child is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall.

  One aspect of the present invention is a method of assembling a circuit assembly including a wiring board and an electrical connector, the wiring board having fixed means at both ends, and the electrical connector being a housing having electrical insulation. A housing having an open surface, and a plurality of conductive contacts, the contact being held by the housing and projecting while the central portion thereof is inclined outward from the open surface, and both ends of the housing And fixing means provided corresponding to the fixing means of the wiring board in FIG. 1, the wiring board is placed on the housing of the electrical connector, and the fixing means is fitted to the fixing means of the wiring board. A circuit assembly assembling method.

  One aspect of the present invention is an electrical connector coupled to a wiring board, which is a housing having electrical insulation, the housing having an open surface, and a plurality of conductive contacts, held in the housing, An electric connector and a wiring provided with the contact, the central portion of which protrudes while being inclined outward from the open surface, and fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing An electrical connector in which the fixing means is fitted to the fixed means of the wiring board when coupled to the board.

  According to the present invention, since the circuit assembly composed of the wiring board and the electrical connector can arrange the wiring board from above the electrical connector and fix the wiring board to the electrical connector, the mounting of the wiring board can be automated. Become.

1 is a perspective view showing a circuit assembly according to a first embodiment. It is a disassembled perspective view of the circuit assembly shown in FIG. (A) is a perspective view showing the wiring board of the circuit assembly shown in FIG. 1 from above, and (b) is a perspective view showing the wiring board of the circuit assembly shown in FIG. 1 from below. It is a disassembled perspective view of the electrical connector of the circuit assembly shown in FIG. It is a perspective view which expands and shows a part of electric connector. (A) is the side view which showed the state before a wiring board and an electrical connector couple | bond together, (b) is a side view which shows the state which the wiring board and electrical connector combined. (A) is sectional drawing which partially expands and shows the state before a wiring board and an electrical connector couple | bond, (b) is a cross section which expands and shows the state which the wiring board and the electrical connector couple | bonded FIG. It is a perspective view which shows a contactor. It is the IX-IX sectional view taken on the line in FIG. It is a figure which shows the assembly process of a circuit assembly. It is a perspective view which shows the other aspect of 1st Embodiment. It is a perspective view which shows the circuit assembly which concerns on 2nd Embodiment. (A) is a perspective view showing the wiring board of the circuit assembly shown in FIG. 12 from above, and (b) is a perspective view showing the wiring board of the circuit assembly shown in FIG. 12 from below. FIG. 13A is a perspective view showing the electrical connector of the circuit assembly shown in FIG. 12 from above, and FIG. 13B is a perspective view showing the electrical connector of the circuit assembly shown in FIG. 12 from below. It is a perspective view which shows the state which the electric connector and the wiring board couple | bonded. FIG. 13A is a perspective view showing the pressing member of the circuit assembly shown in FIG. 12 from above, and FIG. 13B is a perspective view showing the pressing member of the circuit assembly shown in FIG. 12 from below. It is a perspective view which shows the electrical connector of the circuit assembly which concerns on 3rd Embodiment. It is the sectional view on the AA line in FIG. It is a perspective view which shows the electrical connector of the circuit assembly which concerns on 4th Embodiment. FIG. 20 is a sectional view taken along line B-B in FIG. 19.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

[First Embodiment]
FIG. 1 is a perspective view showing a circuit assembly according to the first embodiment. FIG. 2 is an exploded perspective view of the circuit assembly shown in FIG. 3A is a perspective view showing the wiring board of the circuit assembly shown in FIG. 1 from above, and FIG. 3B is a perspective view showing the wiring board of the circuit assembly shown in FIG. 1 from below. is there. 1 and 2, the X direction, the Y direction, and the Z direction are defined as illustrated.

  The circuit assembly 1 shown in each figure is applied to a digital signal receiver (not shown) that receives a high-speed differential signal. The circuit assembly 1 includes a wiring board 2, an electrical connector 3, and a reinforcing member 4. The electrical connector 3 is a component that electrically connects the wiring board 2 to a circuit board 5 on which an IC (Integrated Circuit) or the like is mounted.

  First, the wiring board 2 will be described. As shown in FIG. 3, the wiring board 2 is a board including, for example, FPC (Flexible Printed Circuits) and the like, and a signal line as a wiring conductor on an insulating board having a thickness of about several tens of μm made of a material such as polyimide. And the ground line 6a is printed. A plurality of terminals 6 to which signal lines and ground lines 6a are electrically connected are arranged in parallel at one end of one surface of the insulating substrate. As the wiring conductor constituting the wiring pattern, a conductive metal foil having a thickness of about several tens of μm, such as a copper foil, can be used.

  The front end portion 2A of the wiring board 2 having the above configuration is formed wider than the other portions. The front end 2A of the wiring board 2 has a substantially rectangular shape, and a fitting hole (fixed means) 7 is formed in the front end 2A. That is, the fixed means is a hole formed at both ends of the wiring board. The fitting hole 7 has a substantially rectangular shape and is formed at both ends of the wiring board 2 in the width direction (X direction). A plurality (two in this case) of the fitting holes 7 are arranged in parallel along the longitudinal direction (Y direction) of the wiring board 2. Moreover, the notch part 8 is formed in the front-end | tip part 2A. The notch 8 has a substantially rectangular shape, and is provided between the fitting holes 7.

  Next, the electrical connector 3 will be described. FIG. 4 is an exploded perspective view of the electrical connector of the circuit assembly shown in FIG. As shown in FIG. 4, the electrical connector 3 includes a housing 10, board holding portions (fixing means) 12 a and 12 b, and a contact 14. The external dimensions of the electrical connector 3 are, for example, a length of 12.50 mm, a width of 4.50 mm, and a height of about 1.00 mm. In FIG. 4, for convenience of explanation, the contact 14 is partially omitted.

  The housing 10 is formed from a material having electrical insulation. As materials having electrical insulation, industrial plastic materials such as PBT (polybutylene terephthalate), PC (polycarbonate), PSS (polystyrene sulfonate), LCP (liquid crystal polymer: Liquid Crystal Polymer) (Plastic)), various resins such as nylon can be used. The housing 10 is formed by, for example, resin injection molding.

  The housing 10 includes a first side wall part 20, a second side wall part 21, and a pair of connecting parts 22 and 23 that connect the first side wall part 20 and the second side wall part 21. The first side wall portion 20 and the second side wall portion 21 are columnar members having a substantially rectangular cross section, are opposed to each other at a predetermined interval, and extend substantially parallel to each other. Each upper surface 20a, 21a of the 1st side wall part 20 and the 2nd side wall part 21 is a flat surface, and is the same height position.

  The connecting portions 22 and 23 are provided at both ends of the first side wall portion 20 and the second side wall portion 21 in the longitudinal direction (X direction), respectively. The connecting part 22 and the connecting part 23 have the same configuration. Here, the configuration will be described using the connecting portion 22 as an example.

  The connecting portion 22 includes a base portion 25 and first to third projecting portions 26, 27, and 28. The base 25 is connected to one end of the first and second side wall portions 20 and 21 in the longitudinal direction. The base portion 25 is a plate-like member and extends along the facing direction (Y direction) between the first side wall portion 20 and the second side wall portion 21. The base portion 25 is formed with an engaging groove 25a for attaching substrate holding portions 12a and 12b described later. A pair of engagement grooves 25 a are provided across the third protrusion 28, and extend along the longitudinal direction of the first and second side walls 20, 21.

  The first to third protrusions 26 to 28 protrude upward from the base 25, and their tips are located above the upper surfaces 20 a and 21 a of the first side wall 20 and the second side wall 21. The first protrusion 26 and the second protrusion 27 are provided at both ends in the longitudinal direction of the base 25 (the width direction of the housing 10: the Y direction) and are disposed to face each other. The third projecting portion 28 is disposed at the center portion of the base portion 25 in the width direction (longitudinal direction of the housing 10: X direction), and protrudes upward from the upper surface of the base portion 25.

  Guide surfaces 26a, 27a, and 28a are formed on the upper portions of the first to third protrusions 26 to 28, respectively. The guide surfaces 26 a, 27 a, and 28 a are inclined surfaces (taper) that are inclined downward toward the inside of the housing 10. The lower ends of the guide surfaces 26a, 27a, 28a are substantially equal to the height positions of the upper surfaces 20a, 21a of the first and second side wall portions 20, 21. The guide surfaces 26 a, 27 a, and 28 a function as a positioning mechanism when the wiring board 2 is disposed on the housing 10.

  A substantially rectangular opening K is defined in the housing 10 by the first side wall portion 20, the second side wall portion 21, and the connecting portions 22 and 23. The housing 10 has an open surface OS defined by the upper surfaces 20a and 21a of the first side wall portion 20 and the second side wall portion 21, and is open in one direction. In addition, as shown in FIG. 9, the bottom surface of the housing 10 is flush. Thereby, the housing 10 is stably fixed to the circuit board 5.

  FIG. 5 is an enlarged perspective view showing a part of the electrical connector. FIG. 6A is a side view showing a state before the wiring board and the electrical connector are joined, and FIG. 6B is a side view showing a state where the wiring board and the electrical connector are joined. . FIG. 7A is a partially enlarged cross-sectional view showing a state before the wiring board and the electrical connector are joined, and FIG. 7B shows a state where the wiring board and the electrical connector are joined together. It is sectional drawing which expands and shows a part.

  Substrate holding portions 12 a and 12 b shown in FIG. 5 are means for holding and fixing the wiring board 2 to the housing 10. As shown in FIG. 5, the substrate holding portions 12a and 12b are made of an elastic material such as metal. The substrate holding part 12a arranged in the connecting part 22 and the substrate holding part 12b arranged in the connecting part 23 have the same configuration. Here, the configuration will be described by exemplifying the substrate holding portion 12b disposed in the connecting portion 23.

  The substrate holding part 12 b is attached to one end side in the longitudinal direction of the first side wall part 20 and the second side wall part 21, that is, to the connecting part 23 of the housing 10. The board holding part 12b has a fitting part configured to be fitted into a hole of the wiring board, and a base part connected to the fitting part and fixed to the housing. That is, the substrate holding part 12 b has flexibility, and includes a base part 30, a fitting part 31, and a connecting part 32 that connects the base part 30 and the fitting part 31. The base 30, the fitting part 31, and the connecting part 32 are integrally formed of sheet metal.

  The base 30 is a plate-like member, and extends in one direction from a long portion 30a extending in the longitudinal direction (Y direction) of the connecting portion 22 and a lateral portion of the long portion 30a. It has a pair of overhang | projection parts 30b and 30c (refer FIG. 5). The base 30 is disposed on the bottom surface side of the connecting portion 22.

  The fitting portion 31 is a portion that fits into the fitting hole 7 of the wiring board 2 and the fitting hole 9 of the reinforcing member 4 described later. As shown in FIG. 6, the fitting part 31 is connected between the upper surface part 31a, the first side surface part 31b connected to one end of the upper surface part 31a, and the upper surface part 31a and the connecting part 32. The second side surface portion 31c.

  The upper surface portion 31 a has a substantially rectangular shape when viewed from above, and has substantially the same dimensions as the fitting hole 7 of the wiring board 2 and the fitting hole 9 of the reinforcing member 4. A locking portion 34 is provided on the upper surface portion 31a. The locking portion 34 is a portion for locking the wiring board 2 and the reinforcing member 4 and is provided on the side surface of the upper surface portion 31a. The locking portion 34 has an inclined surface that is inclined outward and downward from the upper surface of the upper surface portion 31a.

  The first side surface portion 31 b and the second side surface portion 31 c are portions that contact the fitting hole 7 and the fitting hole 9. The width dimension of the 1st side part 31b and the 2nd side part 31c is larger than the diameter of the fitting hole 7 and the fitting hole 9. FIG. A curved surface that bulges outward is provided on the outer surface of the first side surface portion 31b. Further, a gap D is provided between the tip of the first side surface portion 31 b and the connecting portion 32. The fitting part 31 is provided so as to be able to bend downward by the gap D when pressed when the wiring board 2 is pushed.

  The connecting portion 32 integrally connects one end portion of the base portion 30 and one end portion of the fitting portion 31. The connecting portion 32 has a substantially U shape and is inserted into the engaging groove 25 a formed in the connecting portions 22 and 23 of the housing 10. Thereby, the board | substrate holding | maintenance parts 12a and 12b are fixed to the connection parts 22 and 23. FIG. When the fixing means is fitted to the fixed means, the fixing means gives the wiring board a force that is opposite to the lateral direction from the center of the wiring board. That is, when the board holding parts 12 a and 12 b are fitted into the fitting holes 7 of the wiring board 2 and the fitting holes 9 of the reinforcing member 4, the central part (center) with respect to the wiring board 2 and the reinforcing member 4. The tension is applied to the opposite direction toward the both ends (lateral direction), that is, to the outside in the X direction. Further, the wiring board 2 and the reinforcing member 4 are locked by the locking portion 34 of the upper surface portion 31 a, and the wiring board 2 and the reinforcing member 4 are fixed to the electrical connector 3.

  Next, the contact 14 will be described. As shown in FIG. 2, a plurality (30 in this case) of contacts 14 are arranged in the housing 10. The contacts 14 are arranged in a space S defined by the first side wall part 20 and the second side wall part 21 in the housing 10, and the contact points with the wiring board 2 are exposed. The width of the contacts 14 is, for example, about 0.15 mm, and the arrangement pitch between the contacts 14 is, for example, about 0.15 mm. The contact 14 can be formed, for example, by punching a plate having a constant thickness by press working. Thereby, the contactor 14 having a bent shape can be processed easily and accurately.

  Both ends of the contact 14 are fixed to and supported by the first side wall 20 and the second side wall 21. Specifically, for example, the contact 14 may be formed integrally with the housing 10 when the housing 10 is injection molded, or may be press-fitted into the housing 10 and fixed to the housing 10. Adjacent contacts 14 are arranged in opposite directions. As a result, the contacts 14 are arranged in a staggered manner in contact with the wiring board 2 in the longitudinal direction of the housing 10. A specific configuration of the contact 14 will be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view showing the contact. 9 is a cross-sectional view taken along line IX-IX in FIG.

  As shown in FIGS. 8 and 9, the contact 14 is embedded in a predetermined position of the connection terminal 40, a first end 41 embedded in a predetermined position of the first side wall portion 20, and a second side wall portion 21. The second end 42 is connected to the first end 41 side, the first portion 43 extends to the second side wall 21 side, and the second end 42 is connected to the first side wall 20 side. And a central portion 45 that connects the first portion 43 and the second portion 44 by a bent portion. The second portion 44 has a plurality of straight portions and a plurality of bent portions. In addition, one straight portion of the plurality of straight portions and the first portion 43 are substantially parallel and inclined with respect to the open surface OS, and the central portion 45 is connected to the wiring board by the electrical connector 3. When moving, it moves elastically toward the open surface OS. The connection terminal 40, the first end portion 41, the second end portion 42, the first portion 43, the second portion 44, and the central portion 45 are integrally formed and are located on the same plane.

  The connection terminal 40 is a part on one end side of the contact 14 and is configured in a straight line. The connection terminal 40 is in electrical contact with a contact portion (not shown) provided on the circuit board 5. The connection terminal 40 is located outside the outer surface of the first side wall portion 20.

  The first end portion 41 is a portion between the connection terminal 40 and the first portion 43. A part of the first end portion 41 is embedded in the first side wall portion 20, and is supported and fixed to the first side wall portion 20. The first end portion 41 is configured in a straight line and extends substantially parallel to the connection terminal 40 at a position above the connection terminal 40. A part of the second end portion 42 is embedded in the second side wall portion 21, and is supported and fixed to the second side wall portion 21. The contact 14 is fixed to and supported by the housing 10 at two locations of the second end 42 and the first end 41.

  The first portion 43 is a portion between the first end portion 41 and the central portion 45. The first portion 43 is connected to the first end portion 41 and extends in an inclined manner from the bottom surface side of the first side wall portion 20 toward the open surface OS side. The second portion 44 is a portion between the second end portion 42 and the central portion 45. The second portion 44 includes a first straight portion (straight portion) 44a, a second straight portion 44b, a third straight portion 44c, a first bent portion (bent portion) 44d, and a second bent portion 44e. doing.

  The first straight portion 44a and the second straight portion 44b are connected by a first bent portion 44d having a substantially V shape. The first straight portion 44a extends from the second end portion 42 toward the first side wall portion 20 and is inclined downward from the second side wall portion 21 side toward the first side wall portion 20 side. . The second straight part 44b extends from the first bent part 44d toward the first side wall part 20 and is inclined upward from the second side wall part 21 side toward the first side wall part 20 side. .

  The second straight portion 44b and the third straight portion 44c are connected by a second bent portion 44e having a substantially V shape. The third straight portion 44c extends from the second bent portion 44e toward the second side wall portion 21 and is inclined upward from the first side wall portion 20 side toward the second side wall portion 21 side. . That is, the third straight portion 44c is folded back with respect to the second straight portion 44b by the second bent portion 44e.

  The central portion 45 has a bent portion 45a bent in a U-shape so that the first portion 43 and the third straight portion 44c of the second portion 44 are substantially parallel with a predetermined interval. The first portion 43 and the second portion 44 are connected. The top of the central portion 45 is a contact point with the terminal 6 of the wiring board 2. The central portion 45 protrudes upward (outward) from the open surface OS while being inclined with respect to the upper surfaces 20a and 21a of the first side wall portion 20 and the second side wall portion 21, that is, the open surface OS. As a result, the contact 14 can contact the terminal 6 of the wiring board 2 placed from above.

  Note that the contact 14 adjacent to the contact 14 has a configuration in which the above-described configuration is reversed left and right. That is, in the contact 14 adjacent to the contact 14 described above, the connection terminal 40 is located outside the second side wall 21, and the first end 41 is fixed to the second side wall 21. Further, the second end portion 42 is fixed to the first side wall portion 20. With such a configuration, the contacts of the contacts 14 are arranged in a staggered manner.

  The contact 14 having such a configuration has elasticity by including a plurality of bent portions. When the wiring board 2 is placed and pressed downward, the wiring board 2 is placed on the open surface OS side. An elastic reaction force that moves in the pushing-up direction acts. Further, when the wiring board 2 is placed, the contact 14 bends downward to slide the contact along the terminal 6 of the wiring board 2.

  The reinforcing member 4 is a member that supports the fixing of the wiring board 2 when the wiring board 2 is placed on the housing 10. The reinforcing member 4 has a substantially rectangular shape, and has substantially the same shape as the distal end portion 2 </ b> A of the wiring board 2. The reinforcing member 4 is a material having rigidity, for example, and is formed of, for example, a glass epoxy plate, a paper phenol plate, a polyimide film, a polyester film, a metal plate, or the like, and has a thickness equivalent to the thickness of the wiring board 2. doing. A fitting hole 9 is formed in the reinforcing member 4 at a position corresponding to the fitting hole 7 of the wiring substrate 2, that is, a position corresponding to the fitting portion 31 of the substrate holding portions 12 a and 12 b in the housing 10. Further, the reinforcing member 4 is formed with a notch 4a. The notch 4 a has a substantially rectangular shape and is provided between the fitting holes 9.

  The reinforcing member 4 is disposed on one surface of the wiring board 2 (the surface opposite to the surface on which the terminals 6 are provided), and the fitting hole 9 is fitted to the board holding portions 12 a and 12 b of the housing 10. As a result, the reinforcing member 4 is given a tension that pulls the reinforcing member 4 outward, as with the wiring board 2. Therefore, the reinforcing member 4 presses the wiring board 2 downward, and in the circuit assembly 1, the contact between the terminal 6 of the wiring board 2 and the contact 14 of the electrical connector 3 becomes more reliable.

  Next, a method for assembling the circuit assembly 1 will be described. FIG. 10 is a diagram illustrating an assembly procedure of the circuit assembly.

  As shown in FIG. 10, first, the electrical connector 3 is placed on the circuit board 5. Next, the wiring board 2 is disposed above the electrical connector 3 and the wiring board 2 is placed on the electrical connector 3 (housing 10). At this time, the wiring board 2 is positioned by the first to third protrusions 26 to 28 of the housing 10. Specifically, the third protrusion 28 of the housing 10 is engaged with the notch 8 of the wiring board 2, and the wiring board 2 is disposed at a predetermined position by the guide surfaces 26a and 27a. And the wiring board 2 is pressed and the fitting part 31 of the board | substrate holding | maintenance parts 12a and 12b and the fitting hole 7 of the wiring board 2 are fitted. At this time, the wiring substrate 2 is locked by the locking portion 34 of the fitting portion 31, and the wiring substrate 2 is fixed to the electrical connector 3.

  When the wiring board 2 and the electrical connector 3 are coupled, tension is applied to the wiring board 2 by the board holding portions 12a and 12b. This tension is applied in the direction opposite to the center of the wiring board 2 (the direction in which the board holding portions 12a and 12b are provided), that is, the direction in which both ends of the wiring board 2 are pulled outward. As a result, a downward pressing force acts on the entire surface of the wiring board 2, and the connection between the terminal 6 of the wiring board 2 and the contact 14 of the electrical connector 3 is ensured.

  Subsequently, the reinforcing member 4 is disposed above the wiring board 2, and the reinforcing member 4 is placed on the wiring board 2. And the reinforcement member 4 is pressed and the fitting part 31 of the board | substrate holding | maintenance parts 12a and 12b and the fitting hole 9 of the reinforcement member 4 are fitted. Thereby, the tension | tensile_strength is provided to the reinforcement member 4 similarly to the wiring board 2. FIG. The reinforcing member 4 may be disposed at the same time when the wiring board 2 is placed on the electrical connector 3. As described above, in this embodiment, the circuit assembly 1 is assembled by stacking the wiring board 2 and the reinforcing member 4 in this order on the electrical connector 3.

  As described above, in the present embodiment, in the housing 10 of the electrical connector 3, the first side wall part 20 and the second side wall part 21 are arranged to face each other, and the first side wall part 20 and the second side wall part 21 are arranged. An open surface OS is defined by the take. The contact 14 is arranged between the first side wall part 20 and the second side wall part 21 and is fixed to the first side wall part 20 and the second side wall part 21. A contact point with the substrate 2) protrudes outward from the open surface OS and is exposed. Further, at both ends of the housing 10, board holding parts 12 a and 12 b are provided at positions corresponding to the fitting holes 7 provided in the wiring board 2.

  In the electrical connector 3 having such a configuration, since the contact 14 protrudes from the open surface OS, the contact 14 and the terminal 6 of the wiring board 2 can be connected by placing the wiring board 2 on the electrical connector 3. . Therefore, when attaching the wiring board 2 to the electrical connector 3, the wiring board 2 is placed on the electrical connector 3 from above the electrical connector 3, and the wiring board 2 is pressed from above. That is, in the circuit assembly 1 of this embodiment, the wiring board 2 can be mounted on the electrical connector 3 by pushing the PFC 2 from above. Therefore, unlike the prior art, it is not necessary to insert the wiring board 2 from the horizontal direction. Therefore, the mounting of the wiring board 2 on the electrical connector 3 mounted on the circuit board 5 can be automated.

  Moreover, the board | substrate holding | maintenance parts 12a and 12b give the tension | tensile_strength which pulls the wiring board 2 outside with respect to the wiring board 2, when it fits with the fitting hole 7 of PFC2. Therefore, even if the wiring board 2 is placed on the electrical connector 3, the housing 10 and the wiring board 2 can be securely fixed, and the electrical connection between the contact 14 and the terminal 6 can be improved. It can be secured.

  Moreover, the contactor 14 has a plurality of bent portions (folding points). With such a configuration, the length of the contact 14 can be ensured. The contactor 14 has a so-called both-end support structure in which the first end portion 41 and the second end portion 42 are held by the first side wall portion 20 and the second side wall portion 21. Therefore, compared to a so-called cantilever structure that is supported only at one end, a force that moves toward the open surface OS, that is, a reaction force (elastic force) against a pressure applied when the wiring board 2 is placed. ) Can be obtained. This makes it possible to more reliably make contact between the contact 14 and the terminal 6 of the wiring board 2.

  Adjacent contacts 14 are arranged with their directions reversed left and right. Therefore, the central portions 45 of the contacts 14 are not adjacent to each other. Thereby, even if it is a case where the contactor 14 is pressed and bent, it can prevent that the adjacent center part 45 contacts. Therefore, the contacts 14 can be arranged at a narrow pitch.

  In the above embodiment, the wiring board 2 and the reinforcing member 4 are separate members. However, the wiring board 2 and the reinforcing member 4 may be integrally formed.

  Moreover, in the said embodiment, although the connection terminal 40 illustrated the structure which protrudes in the out-of-plane direction from the outer surface of the 1st side wall part 20 or the 2nd side wall part 21, the structure of the connection terminal 40 is not limited to this. . The connection terminal 40 may be configured to ensure electrical contact with the circuit board 5, and may be appropriately set according to the configuration of the circuit board 5.

  In addition to the above embodiment, the circuit assembly 1 may have a configuration as shown in FIG. FIG. 11 is an exploded perspective view showing another aspect of the first embodiment. As shown in FIG. 11, in the circuit assembly 1 </ b> A, a substantially cylindrical protrusion 46 that protrudes upward from the upper surface 20 a is provided on the upper surface 20 a of the first side wall portion 20 in the electrical connector 3 </ b> A. Correspondingly, the wiring board 2 </ b> B and the reinforcing member 4 </ b> A are provided with notches 47 and 48 at positions corresponding to the protrusions 46. With this configuration, in the circuit assembly 1 </ b> A, when the wiring board 2 is placed on the electrical connector 3, the wiring board 2 can be easily positioned. Note that the position and number of the protrusions 46 are not limited to the configuration shown in FIG.

  Furthermore, in the above-described embodiment, the board holding portions 12a and 12b for fixing the wiring board 2 and the reinforcing member 4 are provided at both ends of the housing 10, but means for holding the wiring board 2 and the like is further provided at other locations. It may be provided. Specifically, for example, fixing means may be provided on the second side wall portion 21.

  Moreover, in the said embodiment, although the contactor 14 is hold | maintained by the 1st side wall part 20 and the 2nd side wall part 21, of course, the contactor 14 may be the structure hold | maintained only at one end.

[Second Embodiment]
Next, the second embodiment will be described. FIG. 12 is a perspective view showing a circuit assembly according to the second embodiment. 13A is a perspective view showing the wiring board of the circuit assembly shown in FIG. 12 from above, and FIG. 13B is a perspective view showing the wiring board of the circuit assembly shown in FIG. 12 from below. is there. 14A is a perspective view showing the electrical connector of the circuit assembly shown in FIG. 12 from above, and FIG. 14B is a perspective view showing the electrical connector of the circuit assembly shown in FIG. 12 from below. is there. FIG. 15 is a perspective view showing a state where the electrical connector and the wiring board are coupled. In FIG. 12, the X direction, the Y direction, and the Z direction are defined as shown.

  As shown in FIGS. 12 to 14, the circuit assembly 50 includes a wiring board 51, an electrical connector 52, and a pressing member 53. The electrical connector 52 is a component that electrically connects the wiring board 51 to a circuit board (not shown) on which an IC or the like is mounted.

  First, the wiring board 51 will be described. As shown in FIG. 13, the wiring board 51 has signal lines and ground lines 54a as wiring conductors on an insulating board made of a material such as polyimide and having a thickness of about several tens of μm, like the wiring board 2 described above. It is printed. A plurality of terminals 54 to which signal lines and ground lines 54a are electrically connected are arranged in parallel at the end of one surface of the insulating substrate.

  The front end portion 51A of the wiring board 51 having the above-described configuration is formed wider than the other portions. The front end portion 51A of the wiring board 51 has a substantially rectangular shape, and a fitting hole (fixed means) 55 is formed in the front end portion 51A. The fitting hole 7 has a substantially circular shape, and is formed at both ends of the wiring board 51 in the width direction (X direction). A plurality (two in this case) of the fitting holes 55 are arranged in parallel along the longitudinal direction (Y direction) of the wiring board 51.

  A reinforcing member 56 is provided on one surface of the wiring board 51 (the surface opposite to the surface on which the terminals 54 are provided). The reinforcing member 56 is formed of a material such as polyimide, for example, and is disposed at the front end portion 51 </ b> A of the wiring board 51. The fitting hole 55 of the wiring board 51 passes through the reinforcing member 56.

  Next, the electrical connector 52 will be described. As shown in FIG. 14, the electrical connector 52 includes a housing 60, pressing member holding portions (fixing means) 61 a and 61 b, and a contactor 14.

  The housing 60 includes a first side wall part 63, a second side wall part 64, and a pair of connecting parts 65 and 66 that connect the first side wall part 63 and the second side wall part 64. The first side wall 63 and the second side wall 64 are columnar members having a substantially rectangular cross section, are opposed to each other at a predetermined interval, and extend substantially parallel to each other. The upper surfaces 63a and 64a of the first side wall 63 and the second side wall 64 are flat surfaces and are at the same height.

  A projecting portion 67 is provided on the second side wall portion 64. The protruding portion 67 is a member having a substantially rectangular cross section, and protrudes from the upper surface 64 a of the second side wall portion 64. The projecting portion 67 is disposed along the outer surface of the second side wall portion 64, and is spaced from the center portion of the second side wall portion 64 with a predetermined interval. The protruding portion 67 functions as a positioning mechanism for the wiring board 51.

  The connecting portions 65 and 66 are provided at both ends in the longitudinal direction (X direction) of the first side wall portion 63 and the second side wall portion 64, respectively. The connecting part 65 and the connecting part 66 have the same configuration. Here, the configuration will be described using the connecting portion 65 as an example.

  The connecting portion 65 is provided with protruding portions (fixing means) 68a and 68b. A plurality (two in this case) of the protrusions 68a and 68b are arranged at predetermined intervals along the Y direction in the connecting portion 65. The protrusions 68a and 68b are provided so as to protrude upward from the upper surface of the connecting portion 65, and the cross section thereof has a substantially semicircular shape. The protrusions 68a and 68b are portions into which the fitting holes 55 of the wiring board 51 are inserted, and hold the wiring board 51 in cooperation with locking claws 72a and 72b of the pressing member holding parts 61a and 61b described later. Fix it.

  A rectangular opening K is defined in the housing 60 by the first side wall part 63, the second side wall part 64, and the connection parts 65 and 66. The housing 60 has an open surface OS defined by upper surfaces 63a and 64a of the first side wall 63 and the second side wall 64, and is open in one direction.

  An insulating sheet IS is provided on the back surface of the housing 60. The insulating sheet IS closes the opening K defined by the first side wall portion 63, the second side wall portion 64, and the connecting portions 65 and 66 on the back side of the housing 60. The insulating sheet IS electrically insulates the circuit board from the contactor 14.

  The pressing member holding portions 61 a and 61 b are portions that fix the pressing member 53 to the housing 60. The pressing member holding portions 61a and 61b are disposed in the connecting portions 65 and 66. The pressing member holding part 61a and the pressing member holding part 61b have the same configuration. Here, the configuration will be described by exemplifying the pressing member holding portion 61a.

  The pressing member holding part 61a has a base part 70 arranged along the upper surface of the connecting part 65, and locking parts 71a, 71b arranged at both end parts (Y direction) of the base part 70. The base 70 is provided with locking claws 72a and 72b at positions corresponding to the protrusions 68a and 68b. The locking claws 72 a and 72 b are arranged to face the protrusions 68 a and 68 b, and are provided to stand upward from the upper surface of the base portion 70. The locking claws 72a and 72b have a curved shape and warp in a convex shape with respect to the protrusions 68a and 68b. The latching claws 72a and 72b apply tension to the wiring board 51 and the pressing member 53 to pull the wiring board 51 and the pressing member 53 (described later) in the longitudinal direction (X direction) of the housing 60. The pressing member 53 is held and fixed to the housing 60.

  The locking portions 71a and 71b are provided with locking claws 73a and 73b, respectively. As shown in FIG. 14A, the locking claws 73 a (73 b) are inclined downward toward the outer side in the width direction of the housing 60.

  The contact 14 has the same configuration as that of the first embodiment. That is, both ends of the contact 14 are fixed to and supported by the first side wall 63 and the second side wall 64. Adjacent contacts 14 are arranged in opposite directions. Thereby, the contacts 14 are arranged in a staggered manner with respect to the wiring board 51 in the longitudinal direction of the housing 10.

  The contact 14 includes a connection terminal 40, a first end 41, a second end 42, a first portion 43, a second portion 44, and a central portion 45. The connection terminal 40, the first end portion 41, the second end portion 42, the first portion 43, the second portion 44, and the central portion 45 are integrally formed and are located on the same plane.

  16A is a perspective view showing the pressing member of the circuit assembly shown in FIG. 12 from above, and FIG. 16B is a perspective view showing the pressing member of the circuit assembly shown in FIG. 12 from below. is there. A pressing member 53 shown in FIG. 16 is a pressing member disposed on the wiring board, and is fixed to the housing and presses the wiring board toward the housing. That is, the pressing member 53 is a member that presses the wiring board 51 toward the housing 60 of the electrical connector 52. The pressing member 53 is formed of a material such as metal, for example, and includes a pressing portion 75, a side surface portion 76, and a pair of engaging portions 77 and 78. The pressing portion 75, the side surface portion 76, and the engaging portions 77 and 78 are integrally formed of sheet metal.

  The pressing portion 75 is a portion that comes into contact with one surface of the wiring substrate 51 and has a plate shape. The pressing portion 75 is provided with a fitting hole 79 at a position corresponding to the fitting hole 55 of the wiring board 51, that is, a position corresponding to the protrusions 68 a and 68 b of the electrical connector 52. The side surface portion 76 stands from an end portion on one side surface in the longitudinal direction of the pressing portion 75. The side surface portion 76 is provided along the pressing portion 75. Engagement holes 80a and 80b that engage with the locking claws 73b of the locking portions 71a and 71b of the pressing member holding portions 61a and 61b are formed at both ends of the side surface portion 76, respectively.

  The engaging portions 77 and 78 are disposed at both end portions on the other side surface of the pressing portion 75, respectively. The engaging portions 77 and 78 protrude from the other side surface of the pressing portion 75 in the surface direction of the pressing portion 75 and stand up in the same direction as the side surface portion 76 from the end portion. Engagement holes 81 and 82 are formed in the engagement parts 77 and 78 to engage with the locking claws 73a of the locking parts 71a and 71b in the pressing member holding parts 61a and 61b. As shown in FIG. 12, in the circuit assembly 50, the wiring board 51 is disposed between the pair of engaging portions 77 and 78.

  Next, a method for assembling the circuit assembly 50 will be described. First, the electrical connector 52 is disposed on the circuit board. Next, the wiring board 51 is disposed above the electrical connector 52, and the wiring board 51 is placed on the electrical connector 52 (housing 60). Then, the wiring board 51 is pressed, and the projections 68 a and 68 b of the housing 60 and the locking claws 72 a and 72 b of the pressing member holding parts 61 a and 61 b are fitted into the fitting holes 55 of the wiring board 51. At this time, the wiring substrate 51 is locked by the locking portions 71 a and 71 b of the pressing member holding portions 61 a and 61 b, and the wiring substrate 51 is fixed to the electrical connector 52.

  After fixing the wiring board 51 and the electrical connector 52, the pressing member 53 is disposed above the wiring board 51, and the reinforcing member 56 is placed on the wiring board 51. Then, the pressing member 53 is pressed, and the projections 68 a and 68 b of the housing 60 and the locking claws 72 a and 72 b of the pressing member holding portions 61 a and 61 b are fitted into the fitting holes 79 of the pressing member 53. Further, the engaging claws 73a and 73b of the engaging portions 71a and 71b of the pressing member holding portions 61a and 61b and the engaging holes 80a, 80b, 81 and 82 of the pressing member 53 are engaged.

  As a result, a force for uniformly pressing the wiring board 51 from the pressing member 53 toward the electrical connector 52 is applied. Therefore, the terminal 54 of the wiring board 51 and the contact 14 of the electrical connector 52 are reliably in contact. The pressing member 53 may be disposed at the same time when the wiring board 51 is placed on the electrical connector 52. As described above, in this embodiment, the circuit assembly 50 is assembled by stacking the wiring board 51 and the pressing member 53 in this order on the electrical connector 52.

  As described above, in the present embodiment, the housing 60 of the electrical connector 52 is arranged such that the first side wall 63 and the second side wall 64 face each other, and the first side wall 63 and the second side wall 64. An open surface OS is defined by the take. The contact 14 is arranged between the first side wall 63 and the second side wall 64 and is fixed to the first side wall 63 and the second side wall 64, and a central portion 45 (wiring) A contact point with the substrate 2) protrudes outward from the open surface OS and is exposed.

  In the electrical connector 52 having such a configuration, since the contact 14 protrudes from the open surface OS, the contact 14 can be connected to the terminal 54 of the wiring board 51 by placing the wiring board 51 on the electrical connector 52. . Therefore, when the wiring board 51 is attached to the electrical connector 52, the wiring board 51 is placed on the electrical connector 52 from above the electrical connector 52, and the wiring board 51 is pressed from above. That is, in the circuit assembly 50 of the present embodiment, the wiring board 51 can be mounted on the electrical connector 52 by pushing the wiring board 51 from above.

  Further, the wiring board 51 is uniformly pressed to the housing 60 side over the entire surface of the wiring board 51 by the pressing member 53. Therefore, the connection between the contact 14 and the terminal 54 of the wiring board 51 can be made more reliable. As a result, the reliability of the circuit assembly 50 can be improved.

  In the above-described embodiment, the connection between the terminal 54 of the wiring board 51 and the contact 14 is ensured by pressing the wiring board 51 by the pressing member 53. It may further include a mechanism (substrate holding portions 12a and 12b in the first embodiment) that applies tension to the substrate.

[Third Embodiment]
Subsequently, the third embodiment will be described. FIG. 17 is a perspective view showing an electrical connector of the circuit assembly according to the third embodiment. 18 is a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 17 and 18, the electrical connector 90 includes a housing 91, board holding portions 92 a and 92 b, and a contactor 93. The housing 91 includes a first side wall portion 95, a second side wall portion 96, a third side wall portion 97, and a pair of connecting portions 98 and 99 that connect the first to third side wall portions 95 to 97. Yes.

  The first side wall portion 95, the second side wall portion 96, and the third side wall portion 97 are columnar members having a substantially rectangular cross section, are opposed to each other at a predetermined interval, and are substantially parallel to each other. It is extended. The third side wall 97 is disposed between the first side wall 95 and the second side wall 96. Each upper surface 95a, 96a, 97a of the 1st side wall part 95, the 2nd side wall part 96, and the 3rd side wall part 97 is a flat surface, and is the same height position.

  The connecting portions 98 and 99 are provided at both ends in the longitudinal direction (X direction) of the first to third side wall portions 95 to 97, respectively. The connection part 98 and the connection part 99 have the same configuration. Here, the configuration will be described using the connecting portion 98 as an example.

  The connecting portion 98 includes a base portion 100 and locking portions 101a and 101b. The base part 100 is connected to one end part in the longitudinal direction of the first to third side wall parts 95 to 97. The base 100 is a plate-like member and extends along the facing direction (Y direction) of the first to third side wall portions 95 to 97.

  The locking portions 101a and 101b protrude upward from the base portion 100, and their tips are located above the upper surfaces 95a, 96a, and 97a of the first to third side wall portions 95 to 97. The locking portions 101 a and 101 b are provided with a locking portion 102 that protrudes inside the housing 91. The locking part 102 locks a wiring board (not shown).

  In addition, guide surfaces 103a and 103b are formed on the upper portions of the locking portions 101a and 101b, respectively. The guide surfaces 103 a and 103 b are inclined surfaces (taper) that are inclined downward toward the inside of the housing 91. The lower ends of the guide surfaces 103a and 103b are substantially equal to the height positions of the upper surfaces 95a and 96a of the first and second side wall portions 95 and 96. The guide surfaces 103 a and 103 b function as a positioning mechanism when the wiring board is disposed in the housing 91.

  In the housing 91, rectangular openings K 1 and K 2 are defined by the first side wall part 95, the second side wall part 96, the third side wall part 97 and the connection parts 98 and 99. The housing 91 has an open surface OS defined by upper surfaces 95a, 96a, and 97a of the first to third side wall portions 95 to 97, and is open in one direction.

  The board holding portions 92 a and 92 b are means for holding and fixing the wiring board to the housing 91. The substrate holding portions 92a and 92b are made of an elastic material such as metal. The substrate holding part 92a arranged in the connecting part 98 and the substrate holding part 92b arranged in the connecting part 99 have the same configuration. Here, the configuration will be described by exemplifying the substrate holding portion 92 a disposed in the connecting portion 98. The substrate holders 92a and 92b are formed integrally with the housing 91 by injection molding.

  The substrate holding part 92 a is attached to one end side in the longitudinal direction of the first to third side wall parts 95 to 97, that is, to the connecting part 98 of the housing 91. The substrate holding portion 92 a has flexibility and includes a base portion 110 and a fitting portion 111. The base part 110 and the fitting part 111 are integrally formed of sheet metal.

  The base 110 is a plate-like member and extends in the longitudinal direction (Y direction) of the connecting portion 98. The fitting portion 111 is a portion that fits into a fitting hole (not shown) of the wiring board. As shown in FIG. 17, the fitting portion 111 is connected between the upper surface portion 111a, the first side surface portion 111b connected to one end of the upper surface portion 111a, and the upper surface portion 111a and the base portion 110. It is comprised from the 2nd side part 111c.

  The upper surface portion 111a has a substantially rectangular shape when viewed from above, and has substantially the same dimensions as the fitting hole of the wiring board. The 1st side part 111b and the 2nd side part 111c are parts which contact | abut with the fitting hole of a wiring board. The width dimension of the 1st side part 111b and the 2nd side part 111c is larger than the diameter of the fitting hole of a wiring board. When the board holding portions 92a and 92b are fitted into the fitting holes of the wiring board, the direction opposite to the wiring board from the center (center) to both ends (lateral direction), that is, the X direction Give tension to pull outside.

  As shown in FIG. 18, the contactor 93 includes a connection terminal 120, a first end 121, a second end 122, a first portion 123, a second portion 124, and a central portion 125. ing. The connection terminal 120, the first end 121, the second end 122, the first portion 123, the second portion 124, and the central portion 125 are integrally formed and are located on the same plane.

  The connection terminal 120 is a portion on one end side of the contactor 93 and is configured in a straight line. The connection terminal 120 is in electrical contact with a contact portion (not shown) provided on the circuit board. A part of the connection terminal 120 is embedded in the first side wall portion 95, and an end portion thereof is located outside the outer surface of the first side wall portion 95.

  A portion of the first end 121 is embedded in the third side wall 97, and is supported and fixed to the third side wall 97. The first end 121 is configured in a straight line and extends substantially parallel to the connection terminal 120 at a position above the connection terminal 120. A part of the second end portion 122 is embedded in the first side wall portion 95, and is supported and fixed to the first side wall portion 95. The contact 93 is fixed to and supported by the housing 91 at two locations of the second end 122 and the first end 121.

  The first portion 123 is a portion between the first end 121 and the central portion 125. The first portion 123 is connected to the first end portion 121 and extends from the third side wall portion 97 side toward the first side wall portion 95 side and inclines toward the open surface OS side. . The second portion 124 is a portion between the second end portion 122 and the central portion 125. The second portion 124 includes a first straight portion (straight portion) 124a, a second straight portion 124b, a third straight portion 124c, a first bent portion (bent portion) 124d, and a second bent portion 124e. doing.

  The first straight part 124a and the second straight part 124b are connected by a first bent part 124d having a substantially V shape. The first straight portion 124a extends from the second end portion 122 toward the third sidewall portion 97, and is inclined downward from the first sidewall portion 95 toward the third sidewall portion 97. . The second straight portion 124b extends from the first bent portion 124d toward the third side wall 97, and is inclined upward from the first side wall 95 to the third side wall 95. .

  The second straight portion 124b and the third straight portion 124c are connected by a second bent portion 124e that has a substantially V shape. The third straight part 124c extends from the second bent part 124e toward the first side wall part 95, and is inclined upward from the third side wall part 97 side toward the first side wall part 95 side. . That is, the third straight part 124c is folded back with respect to the second straight part 124b by the second bent part 124e.

  The central portion 125 has a bent portion 125a bent in a U-shape so that the first portion 123 and the third straight portion 124c of the second portion 124 are substantially parallel with a predetermined interval. The first part 123 and the second part 124 are connected. The top of the central portion 125 is a contact point with the terminal of the wiring board. The central portion 125 protrudes upward (outward) from the open surface OS while being inclined with respect to the upper surfaces 95a to 97a of the first to third side wall portions 95 to 97, that is, the open surface OS. Thereby, the contactor 93 can contact the terminal of the wiring board placed from above.

  In addition, the contactor 93 adjacent to the contactor 93 has a configuration in which the above-described configuration is reversed left and right. That is, in the contactor 93 adjacent to the contactor 93 described above, the connection terminal 120 is located outside the second side wall part 96, and the first end 121 is fixed to the third side wall part 97. Further, the second end portion 122 is fixed to the second side wall portion 96. With such a configuration, the contacts 93 of the contacts 93 are arranged in a staggered manner.

  As described above, the housing 91 of the electrical connector 90 has the open surface OS defined by the first side wall portion 95, the second side wall portion 96 and the third side wall portion 97. The contact 93 is arranged between the first side wall 95 and the third side wall 97, and between the second side wall 96 and the third side wall 97, and the first side wall 95 and the third side wall 97. The second side wall portion 96 and the third side wall portion 96 are fixed to each other, and a central portion 125 (a contact point with the wiring board) protrudes outward from the open surface OS and is exposed.

  In the electrical connector 90 having such a configuration, since the contactor 93 protrudes from the open surface OS, the contactor 93 and the terminal of the wiring substrate can be connected by placing the wiring substrate on the electrical connector 90. Therefore, when the wiring board is attached to the electrical connector 90, the wiring board is placed on the electrical connector 90 from above the electrical connector 90, and the wiring board is pressed from above. That is, in the electrical connector 90 of this embodiment, the wiring board can be mounted on the electrical connector 90 by pushing the wiring board from above.

[Fourth Embodiment]
Subsequently, a fourth embodiment will be described. FIG. 19 is a perspective view showing an electrical connector of the circuit assembly according to the fourth embodiment. 20 is a cross-sectional view taken along the line BB-in FIG.

  As shown in FIGS. 19 and 20, the electrical connector 130 includes a housing 131, board holding portions 92 a and 92 b, and a contact 132. The board holding portions 92 a and 92 b have the same configuration as that of the electrical connector 90.

  The housing 131 shown in FIG. 19 has a contact holding part 134 in which the contact 132 is disposed. The number of contact holders 134 is the same as the number of contacts 132 (40 in this case), and is provided corresponding to the arrangement of the contacts 132. That is, the contact holders 134 are provided on both sides of the housing 131 in the width direction, and are arranged in a staggered manner. The upper surface of the housing 131 is a flat surface and is an open surface OS.

  As shown in FIG. 20, one end or both end portions of the contact 132 are held by the housing 131 in the contact holding portion 134. The contact 132 includes a connection terminal 140, a first end 141, a second end 142, a first portion 143, a second portion 144, and a central portion 145. The connection terminal 140, the first end 141, the second end 142, the first portion 143, the second portion 144, and the central portion 145 are integrally formed and are located on the same plane. The contact 132 is press-fitted into the contact holding part 134 in the housing 131.

  The connection terminal 140 is a portion on one end side of the contact 132 and is configured in a straight line. The connection terminal 140 is in electrical contact with a contact portion (not shown) provided on the circuit board. The connection terminal 140 is located outside the outer surface of the housing 131.

  A part of the first end 141 is press-fitted into the housing 131 and is supported and fixed to the housing 131. The second end 142 has a substantially U shape and is supported and fixed to the housing 131. The contact 132 is supported by being fixed to the housing 131 at two locations of the second end 142 and the first end 141.

  The first portion 143 is a portion between the first end portion 141 and the central portion 145. The first portion 143 is connected to the first end portion 141 and extends inclined toward the open surface OS side. The second portion 144 is a portion between the second end 142 and the central portion 145. The second portion 144 has a first straight portion (straight portion) 144a, a second straight portion 144b, a third straight portion 144c, a first bent portion (bent portion) 144d, and a second bent portion 144e. doing.

  The first straight portion 144a and the second straight portion 144b are connected by a first bent portion 144d that has a substantially V shape. The first straight portion 144a extends from the second end portion 142 toward the first end portion 141, and is inclined downward from the second end portion 142 toward the first end portion 141 side. The second straight portion 144b extends from the first bent portion 144d toward the first end portion 141, and is inclined upward from the second end portion 142 side toward the first end portion 141 side. .

  The second straight portion 144b and the third straight portion 144c are connected by a second bent portion 144e that has a substantially V shape. The third straight portion 144c extends from the second bent portion 144e toward the second end portion 142, and is inclined upward from the first end portion 141 side toward the second end portion 142 side. That is, the third straight portion 144c is folded back with respect to the second straight portion 144b by the second bent portion 144e.

  The central portion 145 has a bent portion 145a bent in a U-shape so that the first portion 143 and the third straight portion 144c of the second portion 44 are substantially parallel with a predetermined interval. The first portion 143 and the second portion 144 are connected. The top of the central portion 145 is a contact point with the terminal of the wiring board. The central portion 145 protrudes upward (outward) from the open surface OS while being inclined with respect to the open surface OS. Thereby, the contact 132 can be brought into contact with a terminal of the wiring board placed from above.

  As described above, the housing 131 of the electrical connector 130 has the open surface OS. Further, the contact 132 is held by the contact holding portion 134 of the housing 131, and the central portion 145 (contact point with the wiring board) is exposed to protrude outward from the open surface OS.

  In the electrical connector 130 having such a configuration, since the contact 132 protrudes from the open surface OS, the contact 132 and the terminal of the wiring substrate can be connected by placing the wiring substrate on the electrical connector 130. Therefore, when the wiring board is attached to the electrical connector 130, the wiring board is placed on the electrical connector 130 from above the electrical connector 130, and the wiring board is pressed from above. That is, in the electrical connector 130 of this embodiment, the wiring board can be mounted on the electrical connector 130 by pushing the wiring board from above.

  DESCRIPTION OF SYMBOLS 1,50 ... Circuit assembly, 2,51 ... Wiring board (wiring board), 3, 52, 90, 130 ... Electrical connector, 7 ... Fitting hole (fixed means) 10, 60, 91, 131 ... Housing , 12a, 12b, 92a, 92b ... wiring holding part (fixing means), 14, 93, 132 ... contact, 20, 63, 95 ... first side wall part, 21, 64, 96 ... second side wall part, 30 ... Base part 31 ... Fitting part 41 ... First end part 42 ... Second end part 43 ... First part 44 ... Second part 44a-44c ... First to third straight part (straight part) 44d, 44e ... 1st and 2nd bending part (bending part), 134 ... Contact holding part, OS ... Open surface.

Claims (11)

A circuit assembly comprising:
A wiring board having fixed means at both ends;
Electrical connector,
A housing having electrical insulation, the housing having an open surface;
A plurality of conductive contacts, which are held by the housing, projecting while being inclined outward from the open surface, and contact points of the plurality of conductive contacts with the wiring board are the housing The contacts are arranged such that the slopes of adjacent conductive contacts face in opposite directions so that they are arranged in a staggered manner in the longitudinal direction of
The electrical connector having fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing, and
When the electrical connector and the wiring board are bonded, said fixing means is fitted into the fixation means of the wiring substrate,
The housing has at least a first side wall part and a second side wall part arranged to face each other, and the open surface is defined by the first side wall part and the second side wall part,
The contact is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall. ,
The contact is
A first end embedded in a predetermined position of the first side wall;
A second end embedded in a predetermined position of the second side wall;
A first portion connected to the first end portion side and extending to the second side wall portion side;
A second portion connected to the second end portion side and extending to the first side wall portion side;
The central portion connecting the first portion and the second portion by a bent portion,
The second portion has a plurality of straight portions and a plurality of bent portions,
One linear portion of the plurality of linear portions and the first portion are substantially parallel and inclined with respect to the open surface,
The circuit assembly according to claim 1, wherein the central portion elastically moves toward the open surface when the electrical connector is coupled to the wiring board .   2. The circuit assembly according to claim 1, wherein when the fixing means is fitted to the fixed means, the circuit board is applied with a force that opposes the lateral direction from the center of the wiring board.   The circuit assembly according to claim 1, comprising a pressing member disposed on the wiring board, the pressing member pressing the wiring board toward the housing. A pressing member disposed on the wiring board, the pressing member pressing the wiring board toward the housing,
2. The circuit assembly according to claim 1, wherein when the fixing means is fitted to the fixed means, the circuit board is applied with a force that opposes the lateral direction from the center of the wiring board. A circuit assembly comprising:
A wiring board having fixed means at both ends;
Electrical connector,
A housing having electrical insulation, the housing having an open surface;
A plurality of conductive contacts, the contacts being held by the housing and projecting while the central portion thereof is inclined outward from the open surface;
The electrical connector having fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing, and
When the electrical connector and the wiring board are coupled, the fixing means is fitted to the fixed means of the wiring board,
The housing has at least a first side wall part and a second side wall part arranged to face each other, and the open surface is defined by the first side wall part and the second side wall part,
The contact is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall. ,
The contact is
A first end embedded in a predetermined position of the first side wall;
A second end embedded in a predetermined position of the second side wall;
A first portion connected to the first end portion side and extending to the second side wall portion side;
A second portion connected to the second end portion side and extending to the first side wall portion side;
The central portion connecting the first portion and the second portion by a bent portion,
The second portion has a plurality of straight portions and a plurality of bent portions,
One linear portion of the plurality of linear portions and the first portion are substantially parallel and inclined with respect to the open surface,
The circuit assembly according to claim 1, wherein the central portion elastically moves toward the open surface when the electrical connector is coupled to the wiring board. The fixed means includes holes formed at both ends of the wiring board,
The fixing means includes
A fitting portion configured to be fitted into the hole of the wiring board;
A base portion connected to the fitting portion and fixed to the housing;
The a, circuit assembly of any one of claims 1-5. A method of assembling a circuit assembly including a wiring board and an electrical connector,
The wiring board has fixed means at both ends,
The electrical connector is
A housing having electrical insulation, the housing having an open surface;
A plurality of conductive contacts, which are held by the housing, projecting while being inclined outward from the open surface, and contact points of the plurality of conductive contacts with the wiring board are the housing The contacts are arranged such that the slopes of adjacent conductive contacts face in opposite directions so that they are arranged in a staggered manner in the longitudinal direction of
Fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing,
The housing has at least a first side wall part and a second side wall part arranged to face each other, and the open surface is defined by the first side wall part and the second side wall part,
The contact is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall. ,
The contact is
A first end embedded in a predetermined position of the first side wall;
A second end embedded in a predetermined position of the second side wall;
A first portion connected to the first end portion side and extending to the second side wall portion side;
A second portion connected to the second end portion side and extending to the first side wall portion side;
The central portion connecting the first portion and the second portion by a bent portion,
The second portion has a plurality of straight portions and a plurality of bent portions,
One linear portion of the plurality of linear portions and the first portion are substantially parallel and inclined with respect to the open surface,
The central portion elastically moves toward the open surface when the electrical connector is coupled to the wiring board,
An assembly method of a circuit assembly, wherein the housing of the electrical connector is placed on the wiring board, and the fixing means is fitted to the fixed means of the wiring board. An electrical connector coupled to a wiring board,
A housing having electrical insulation, the housing having an open surface;
A plurality of conductive contacts, which are held by the housing, projecting while being inclined outward from the open surface, and contacts of the plurality of conductive contacts with the wiring board are the housing The contacts are arranged such that the slopes of adjacent conductive contacts face in opposite directions so that they are arranged in a staggered manner in the longitudinal direction of
Fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing;
With
The housing has at least a first side wall part and a second side wall part arranged to face each other, and the open surface is defined by the first side wall part and the second side wall part,
The contact is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall. ,
The contact is
A first end embedded in a predetermined position of the first side wall;
A second end embedded in a predetermined position of the second side wall;
A first portion connected to the first end portion side and extending to the second side wall portion side;
A second portion connected to the second end portion side and extending to the first side wall portion side;
The central portion connecting the first portion and the second portion by a bent portion,
The second portion has a plurality of straight portions and a plurality of bent portions,
One linear portion of the plurality of linear portions and the first portion are substantially parallel and inclined with respect to the open surface,
The central portion elastically moves toward the open surface when the electrical connector is coupled to the wiring board,
An electrical connector in which the fixing means is fitted to the fixed means of the wiring board when the electrical connector and the wiring board are coupled. The electrical connector according to claim 8 , wherein when the fixing means is engaged with the fixed means, a force that is contradicted in the lateral direction from the center of the wiring board is applied to the wiring board. The fixed means includes holes formed at both ends of the wiring board,
The fixing means includes
A fitting portion configured to be fitted into the hole of the wiring board;
A base portion connected to the fitting portion and fixed to the housing;
The electrical connector according to claim 8 or 9, comprising: An electrical connector coupled to a wiring board,
A housing having electrical insulation, the housing having an open surface;
A plurality of conductive contacts, the contacts being held by the housing and projecting while the central portion thereof is inclined outward from the open surface;
Fixing means provided corresponding to the fixed means of the wiring board at both ends of the housing;
With
When the electrical connector and the wiring board are coupled, the fixing means is fitted to the fixed means of the wiring board,
The housing has at least a first side wall part and a second side wall part arranged to face each other, and the open surface is defined by the first side wall part and the second side wall part,
The contact is disposed at a predetermined position between the first side wall and the second side wall, and is held by one or both of the first side wall and the second side wall. ,
The contact is
A first end embedded in a predetermined position of the first side wall;
A second end embedded in a predetermined position of the second side wall;
A first portion connected to the first end portion side and extending to the second side wall portion side;
A second portion connected to the second end portion side and extending to the first side wall portion side;
The central portion connecting the first portion and the second portion by a bent portion,
The second portion has a plurality of straight portions and a plurality of bent portions,
One linear portion of the plurality of linear portions and the first portion are substantially parallel and inclined with respect to the open surface,
The central portion is an electrical connector that elastically moves toward the open surface when the electrical connector is coupled to the wiring board.

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