JP2007242473A - Multipole connector, and manufacturing method and mounting method of multipole connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-electrode connector in which stress is alleviated that occurs in installation (insertion) of a connector and in connection under an environment in high temperature and wherein vibrations are added, and in which a stable connection state can be continuingly maintained. <P>SOLUTION: The multipole connector 1 is provided with connector pins 2A-2J arranged in one direction, and these connector pins 2A-2J are coupled by insulating members 3A, 3B. In the connector pins 2A-2J, a curving part 22 curved in a dog leg shape is formed nearly at the center of stretching and extending direction on the arrangement plane. Furthermore, at the lower end side end part of the connector pins 2A-2J, an S-shaped curving part 23 is formed which is formed by folding nearly one reciprocating against the direction perpendicular to the arrangement plane. Then, at the end part of the curving part 23, the lower side horizontal part 235 extended in the direction perpendicular to the arrangement plane is made to be the lower side connection part 24, the end part extended along the arrangement plane opposed to this is made to be the upper side connection part 21, and these are joined by soldering to the lower mounting substrate and the upper mounting substrate arranged in parallel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a multipolar connector for connecting mounting substrates on which electronic components are mounted to each other, a method for manufacturing a multipolar connector, and a mounting method.

2. Description of the Related Art Conventionally, various connectors have been devised for connecting mounting boards and electronic components arranged at different positions, particularly connectors having a structure for preventing or suppressing applied stress (see Patent Documents 1 to 3).
The connector of Patent Document 1 is a circuit board connector including a plurality of tabs (connector pins) soldered to a circuit board. This connector is provided with one or more 90 ° direction changing portions in the middle of the tab and waved bent portions at both ends of the direction changing portion.

  The connector of Patent Document 2 includes a contact-side housing into which pins of other components are inserted and a solder-side housing mounted on a circuit board, and the pin insertion direction and the soldering direction are perpendicular to each other. And the intermediate part which connects the contact side housing and the solder side housing is formed in a U shape.

The connector of patent document 3 is a connector which connects the printed circuit boards orthogonal to each other. In this connector, a substantially U-shaped curved portion is provided on one straight portion of a connector pin that bends at a right angle.
Utility Model Registration No. 2550432 Japanese Utility Model Publication No. 3-38769 Japanese Utility Model Publication No. 5-65067

  By the way, in an electronic device that performs control drive for an electric power steering of an automobile, a drive circuit mounting board and a control circuit mounting board are separately provided in order to separate a drive circuit through which a large current flows and has high heat generation from the control circuit. Provided. The driving circuit mounting board and the control circuit mounting board are arranged in parallel and spaced apart from each other by a predetermined distance. For example, the drive circuit mounting board is placed in contact with the bottom surface of the housing, and the control circuit mounting board is placed above the drive circuit mounting board by a predetermined distance. In this case, a connector for electrical connection between these two mounting boards is required.

  However, the connectors of Patent Documents 1 to 3 described above are used to correct connection tolerances and relieve stress when the connection directions are orthogonal, and are used when connecting mounting boards that are separated in one direction. I can't.

  Furthermore, in an electronic device for electric power steering that is used in an environment where there is a highly exothermic mounting board and is subjected to vibration, the connection state between the connector and the mounting board must be more stable. For example, in the case of soldering a connector and a mounting board, even if vibration occurs at a high temperature, the stress caused by these must be relieved to maintain a good connection state.

  Accordingly, an object of the present invention is to provide a multipolar connector that can relieve stress generated when a connector is installed (inserted) or connected in an environment where vibration is applied at a high temperature and can maintain a stable connection state. There is to do.

  Moreover, the objective of this invention is providing the manufacturing method of the said multipolar connector, and the mounting method using the said multipolar connector.

  (1) The present invention relates to a multipolar connector including a plurality of connector pins arranged in one direction perpendicular to a connection direction and a holding member that holds the plurality of connector pins at a predetermined interval. . The plurality of connector pins of the multipolar connector according to the present invention include a first bending portion that is curved in an arrangement plane including the arrangement direction, and a second curve that is bent at least once in a direction perpendicular to the arrangement plane. And a curved portion.

  In this configuration, the stress generated in the connection direction and the stress generated in the arrangement direction perpendicular to the connection direction are relieved in the first bending portion. Further, the stress generated in the direction perpendicular to the arrangement plane is relieved at the second bending portion. That is, any stress generated in any direction of the three-dimensional space is relaxed. As a result, all the stresses derived when connecting the mounting boards separated from each other by a predetermined distance are alleviated.

  (2) Further, the second bending portion of the multipolar connector of the present invention is formed at one end portion of the connector pin, and a portion extending in the direction perpendicular to the arrangement plane on the terminal end side of the connector pin is a solder connection portion. It is a feature.

  In this configuration, the main extension direction (corresponding to the connection direction) of the connector pins of the multipolar connector becomes a direction perpendicular to the mounting substrate by performing solder connection at a portion extending in a direction perpendicular to the arrangement plane of the second bending portion. And stable installation. Accordingly, the multipolar connector can be stably connected (mounted) in the vertical direction to the mounting substrate that is solder-connected at the second bending portion.

  (3) Moreover, the manufacturing method of the multipolar connector of this invention remove | excludes the connection part of the coupling body by which the several connector pin arranged in one direction and curved in the same shape in the said arrangement plane was connected by integral formation. Forming an insulating resin member for connecting the plurality of connector pins at a predetermined position, and bending and bending one end of the plurality of connector pins at least once in a direction perpendicular to the arrangement plane; And a step of removing the connecting portion of the connecting body.

  In this method, since the plurality of connector pins and the connecting portion are integrally formed, the positional relationship between the plurality of connector pins is maintained. In this state, a plurality of connector pins are connected with an insulating resin component. All connector pins can be finished in the same shape by bending in the double connected state. Then, by removing the integrally formed connecting portion, it is possible to arrange the plurality of connector pins bent into a final shape at predetermined intervals while being in an insulated state.

  (4) Moreover, the manufacturing method of the multipolar connector of this invention is characterized by including the process of forming a connection body by punching out an electroconductive flat plate.

  In this method, a connecting body of a plurality of connector pins formed integrally with a connecting portion is formed by punching. Thereby, manufacture of a coupling body becomes easy and by extension, manufacture of a multipolar connector becomes easy.

  (5) Moreover, the mounting method of the multipolar connector of this invention uses the part extended in the direction perpendicular | vertical to the arrangement plane of the terminal side of the connector pin of the multipolar connector manufactured by the above-mentioned method, and is perpendicular | vertical to an arrangement plane. It is characterized by performing solder connection to the mounting substrate surface.

  In this method, the main extending direction (corresponding to the connecting direction) of the connector pins of the multipolar connector becomes a direction perpendicular to the mounting board by performing solder connection at a portion extending in a direction perpendicular to the arrangement plane of the second bending portion. And stable installation. Accordingly, the multipolar connector can be stably connected (mounted) in the vertical direction to the mounting substrate that is solder-connected at the second bending portion.

  According to the present invention, a plurality of connector pins are similarly provided with a bending portion that is curved in the arrangement plane and a bending portion that is bent in a direction perpendicular to the arrangement plane. A multipolar connector that relieves directional stress can be constructed.

  According to the present invention, it is possible to easily manufacture a multipolar connector in which a plurality of connector pins having complicated curved portions having the same shape are accurately arranged at predetermined intervals.

  According to the present invention, it is possible to stably mount a multipolar connector formed by accurately arranging a plurality of connector pins having complicated curved portions in the same shape at predetermined intervals.

A multipolar connector according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of the multipolar connector according to the present embodiment, and FIG. 2 is a front view, a side view, and a bottom view of the multipolar connector shown in FIG.
The multipolar connector 1 is formed by arranging connector pins 2A to 2J formed in the same shape. At this time, the connector pins 2A to 2J are made of a thin plate-like conductive member such as a metal plate, and are perpendicular to a main extending direction (vertical direction in FIGS. 2A and 2B) corresponding to the connecting direction and The connector pins 2A to 2J are arranged at equal intervals in the width direction.

  One end of the connector pins 2 </ b> A to 2 </ b> J in the extending direction has a shape extending along the extending direction, and the width is narrowed from the one end to a predetermined length, and this narrow portion is the upper connection portion 21. It becomes.

  The substantially central portion of the connector pins 2A to 2J includes a curved portion 22 that curves in a dogleg shape within the arrangement plane, and the curved portions 22 of the connector pins 2A to 2J are all curved in the same direction. . Further, the curved portions 22 of the connector pins 2 </ b> A to 2 </ b> J are formed with a narrow width like the upper connection portion 21.

  The other ends of the connector pins 2A to 2J in the extending direction include a curved portion 23 formed by folding back and forth substantially once in the extending direction and the arrangement direction, that is, the direction perpendicular to the arrangement plane. As shown in FIG. 2B, the bending portion 23 is bent along the arrangement plane after the connector pins are first bent in the direction perpendicular to the arrangement plane, and further perpendicular to the arrangement plane in the arrangement plane direction. It is formed by being bent in a certain direction, bent along the arrangement plane at a position of a predetermined length, and then bent in the direction perpendicular to the arrangement plane in the arrangement plane direction. Accordingly, the bending portion 22 is configured by an upper horizontal portion 231, an upper vertical portion 232, a central horizontal portion 233, a lower vertical portion 234, and a lower horizontal portion 235 in order from the upper side, and the upper horizontal portion 231 and the upper vertical portion. 232 and the center horizontal portion 233 and the center horizontal portion 233, the lower vertical portion 234, and the lower horizontal portion 235, the shape viewed from the arrangement direction is S-shaped. The central horizontal portion 233 is formed longer than the upper horizontal portion 231 and the lower horizontal portion 235, and the upper vertical portion 232 and the lower vertical portion 234 are formed to be substantially the same as or shorter than the upper horizontal portion 231. Then, by adjusting the length of each portion of the bending portion 23, the center of gravity is set at the arrangement plane position in a state where the multipolar connector 1 is erected (a state where the extending direction is the vertical direction). That is, the multipolar connector 1 is formed to be self-supporting.

  The lower horizontal portion 235 is formed wider than the other portion of the connector pin 2, and this portion becomes the lower connection portion 24.

  The connector pins 2A to 2J are connected to each other while maintaining an insulating state by long insulating resin members 3A and 3B having the arrangement direction as a longitudinal direction. The insulating resin member 3 </ b> A is installed between the upper connection portion 21 and the bending portion 22, and the insulating resin member 3 </ b> B is installed between the bending portion 22 and the bending portion 23.

  By setting it as such a structure, when a stress is added for some reason from the outside, the bending parts 22 and 23 will curve according to an applied stress, and can relieve a stress. At this time, mainly, the bending portion 22 relieves stress in a direction parallel to the arrangement plane, and the bending portion 23 relieves stress in a direction perpendicular to the arrangement plane.

  Next, a method for manufacturing a multipolar connector will be described with reference to the drawings.

  FIG. 3 is a flowchart showing a manufacturing flow of the multipolar connector of the present embodiment.

  4A and 4B are diagrams showing the state of the multipolar connector for each manufacturing process. (A) is after punching (S101), (B) is after insulating resin formation (S102), and (C) is after bending (S103). , (D) shows the state after completion of the connected portion deletion (S104).

  (1) When manufacturing the multipolar connector according to the present embodiment, first, a thin metal plate having a predetermined thickness is punched to form connector pins 2A to 2J in a state where the curved portion 21 is formed (S101). As shown in FIG. 4A, the connector pins 2A to 2J are punched out in a state of being connected by connecting portions 4A and 4B extending in the arrangement direction of the connector pins 2A to 2J. At this time, the connecting portion 4A is arranged at a position where the width of the connector pin is wide in the vicinity of the upper connecting portion 21, and the connecting portion 4B is at a position corresponding to the upper vertical portion 232 of the curved portion 23 formed in a later process. Be placed. At this time, the upper connecting portion 21 and the curved portion 22 are punched out narrowly, and the lower connecting portion 24 (the lower horizontal portion 235 of the curved portion 23 formed in a later step) is punched out wide.

  (2) Next, by applying an insulating resin to the connector pins 2A to 2J connected by the connecting portions 4A and 4B and curing them, the long insulating member 3A having the arrangement direction as the longitudinal direction is used. , 3B are formed (S102). At this time, the insulating members 3A and 3B are formed at both ends of the bending portion 21, as shown in FIG.

  (3) Next, the connector pins 2A to 2J connected by the connecting portions 4A and 4B and the insulating members 3A and 3B are bent within a predetermined range including the location of the connecting portion 4B (S103). At this time, as shown in FIG. 4C, the connecting portion 4 </ b> B is bent so as to become the upper vertical portion 232. The upper vertical portion 232 is processed into a shape extending in parallel to the arrangement surface of the connector pins 2A to 2J, and the upper horizontal portion 231 and the central horizontal portion 233 arranged on both sides of the upper vertical portion 232 are arranged on the arrangement surface. Are processed into a shape extending perpendicularly. Further, the lower vertical surface 234 is processed in a shape extending in parallel to the array surface, and the lower horizontal surface 235 corresponding to the lower connection portion 24 is processed in a shape extending perpendicular to the array surface.

  (4) Next, the connecting portions 4A and 4B for connecting the connector pins 2A to 2J are punched (S104). By this punching process, as shown in FIG. 4D, the connector pins 2A to 2J are connected only by the insulating members 3A and 3B and are electrically separated. Thereby, the multipolar connector 1 is formed.

  By using such a manufacturing method, the multipolar connector 1 can be easily mass-produced. Further, since the connector pins 2A to 2J are bent with the connecting portions 4A and 4B and the insulating members 3A and 3B connected, the connector pins 2A to 2J are stably connected, and all the connector pins 2A to 2J are connected. The curved portion 23 can be stably formed with the same shape as 2J.

The multipolar connector 1 thus formed is used by being mounted on a mounting board as shown in FIG.
5A and 5B are diagrams showing a mounting state of the multipolar connector 1, in which FIG. 5A shows a state where it is mounted on the lower mounting substrate 11, and FIG. 5B shows a state where it is further mounted on the upper mounting substrate 12. .

  The lower mounting substrate 11 is fixed to the housing by screws or the like. On the lower mounting substrate 11, two multipolar connector lands 110 are formed. The multipolar connector land 110 includes a rectangular land group on which the connector pins 2 </ b> A to 2 </ b> J are mounted, and each land is formed to have substantially the same area as the lower connection portion 24. In addition, the two multipolar connector lands 110 are respectively formed at the center in the longitudinal direction of the lower mounting substrate 11 and at both ends in the lateral direction. When the multipolar connector 1 is mounted, a solder paste is applied to the multipolar connector land 110.

  When the solder paste is applied to the multipolar connector land 110, the multipolar connector 1 is mounted with the curved portion 23 on the lower side. Accordingly, the lower connection portions 24 of the connector pins 2A to 2J are mounted on the solder paste applied to the multipolar connector land 110. At this time, by using the structure in which the curved portion 23 is the lowermost end, the multipolar connector 1 is stably and independently supported on the solder paste.

  The lower mounting substrate 11 on which the multipolar connector 1 is mounted is subjected to a reflow process, the solder is melted, and the multipolar connector 1 is soldered to the lower mounting substrate 11. At the time of this solder bonding, the multipolar connector 1 is accurately soldered while being self-aligned along the multipolar connector land 110 by self-alignment.

  Next, the upper mounting board 12 is installed above the lower mounting board 11 on which the multipolar connector 1 is mounted. A multi-pole connector through hole 120 is formed in the upper mounting board 12 in advance, and the upper mounting board 12 is arranged so that the upper connection portion 21 of the multi-pole connector 1 penetrates the multi-pole connector through hole 120. . The upper mounting board 12 and the multipolar connector 1 arranged in this way are connected by soldering the upper connection portion 21 of the multipolar connector 1 and the through-hole 120 for the multipolar connector, The mounting substrate 12 is fixed to the housing by screws or the like.

  When such mounting is performed to form an electronic device, there are dimensional tolerances in the housing, the lower mounting board 11, the upper mounting board 12, and the multipolar connector 1. However, by using the multipolar connector 1 of the present embodiment, the bending portion 22 can correct the vertical tolerance and the positional tolerance in the longitudinal direction of the mounting board, and can relieve the stress in these directions generated during mounting. it can. Further, the position tolerance in the short direction of the mounting substrate can be corrected by the curved portion 23, and the stress in this direction generated during mounting can be relieved. In addition, when this electronic device is used, vibration is applied from the outside, but the bending portion 22 relieves stress due to vibration in the vertical direction and the mounting substrate longitudinal direction, and the bending portion 23 reduces stress due to vibration in the mounting substrate short direction. Can be relaxed. And since the stress is relieved in this way, even if the temperature becomes high during operation, the solder joint is not broken, so that a highly reliable electric device can be configured.

  In the above description, the number of connector pins of the multipolar connector is 10. However, the number of connector pins is not limited to this and may be set as appropriate according to the specifications.

1 is an external perspective view of a multipolar connector according to an embodiment of the present invention. It is the front view, side view, and bottom view of the multipolar connector shown in FIG. It is a flowchart which shows the manufacture flow of a multipolar connector. It is a figure which shows the state of the multipolar connector for every manufacturing process. It is a figure which shows the mounting state of the multipolar connector.

Explanation of symbols

1-multipolar connector, 2,2A to 2J-connector pins, 21-upper connection part, 22,23-curved part, 231-upper horizontal part, 232-upper vertical part, 233-central horizontal part, 234-lower side Vertical part, 235-Lower horizontal part, 24-Lower connection part, 3A, 3B-Insulating member, 4A, 4B-Connecting part, 11-Lower mounting board, 110-Land for multipolar connector, 12-Upper mounting Through hole for PCB, 120-multipolar connector

Claims (5)

A plurality of connector pins arranged in one direction perpendicular to the connection direction;
A holding member for holding the plurality of connector pins at a predetermined interval;
In a multi-pole connector with
The plurality of connector pins are:
A first bending portion that curves in an arrangement plane including the arrangement direction;
A second bending portion that is bent and bent at least once in a direction perpendicular to the arrangement plane;
A multi-pole connector characterized by comprising:   2. The multipolar connector according to claim 1, wherein the second bending portion is formed at one end portion of the connector pin, and a portion extending in a direction perpendicular to the arrangement plane on the terminal side of the connector pin is a solder connection portion. Insulating resin member that connects the plurality of connector pins at a predetermined position excluding a connecting portion of a connecting body that is arrayed in one direction and that is connected to each other by a plurality of connector pins that are curved in the same shape within the array plane. Forming a step;
Bending and bending one end of the plurality of connector pins at least once in a direction perpendicular to the arrangement plane; and
Removing the connecting portion of the connecting body;
A method of manufacturing a multipolar connector, comprising:   The manufacturing method of the multipolar connector of Claim 3 which further includes the process of forming the said connection body by punching out an electroconductive flat plate.   5. A multipolar connector for performing solder connection to a mounting substrate surface perpendicular to the arrangement plane, using a portion extending in a direction perpendicular to the arrangement plane on the terminal side of the connector pin of the multipolar connector manufactured in claim 3 or 4. How to mount the connector.

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