JP4448495B2 - connector - Google Patents

Description

  The present invention relates to a connector used for maintaining a connection between a battery and a circuit in, for example, a portable electronic device, and in particular, a rate at which an insulator such as a flux generated by soldering adheres to a contact when mounted on a printed circuit board. Therefore, it is an object of the present invention to provide a connector structure that can reduce the occurrence of contact failure and suppress the occurrence of a contact failure accident.

FIG. 7 shows the structure of a connector to be improved by the present invention. In the figure, reference numeral 10 denotes an insulating body. The insulating body 10 has at least a bottom surface 11 that is in surface contact with a printed circuit board (not shown) to be mounted, and a vertical surface 12 that is disposed in a direction orthogonal to the bottom surface 11. Reinforcing protrusions 20 are attached to protrude from some side edges of the bottom surface 11, and elastic contacts 30 are attached to the vertical surface 12 in a posture protruding from the vertical surface 12.
A pair of pins 13 is formed integrally with the insulating body 10 on the bottom surface 11 of the insulating body 10, and the pins 13 are inserted into holes formed in the printed circuit board. The insulating body 10 is mounted so as to be aligned on the same plane. That is, the reinforcing protruding piece 20 has a pair of legs 22 as shown in FIGS. 9 and 10, and the legs 22 are inserted into the grooves formed in the insulating body 10. A claw 23 is formed on the side of the leg 22, and the claw 23 engages with the insulating body 10 inside the groove. By this engagement, the reinforcing protruding piece 20 is prevented from coming off and fixed to the insulating body 10.

  The reinforcing protrusion 20 is bent toward the bottom surface 11 of the insulating body 10 at the first bent portion 24-1 from the plate surface on which the legs 22 are formed, and further, the reinforcing protrusion 20 is protruded at the second bent portion 24-2. Positioning is performed so that the surface of the back surface 21 of the piece 20 is flush with the bottom surface 11 of the insulating body 10. With this alignment, the back surface 21 of the reinforcing protruding piece 20 comes into contact with the conductive layer formed on the printed circuit board while the insulating body 10 is placed on the printed circuit board, and the reinforcing protruding piece 20 is soldered to the conductive layer. The mounting strength of the insulating body 10 is reinforced by this soldering. That is, since the reaction force of the elastic contact 30 is applied to the insulating body 10 under the condition where a battery or the like is pressed against the elastic contact 30, the structure is configured to receive this reaction force with the reinforcing protruding piece 20. For this purpose, the reinforcing protruding piece 20 is mounted on the edge of the bottom surface 11 of the insulating body 10 facing the same direction as the vertical surface 12 from which the elastic contact 30 protrudes.

The elastic contact 30 is led out to the bottom surface 11 of the insulating body 10 through the path shown in FIG. 11, and the terminal 31 is disposed so as to be exposed at the same surface as the surface of the bottom surface 11. The conductive layer is soldered and electrically connected to the printed circuit board.

  As described above, the reinforcing protruding piece 20 protrudes from the lower side surface of the insulating body 10 on the side where the elastic contact 30 protrudes, and is soldered to the printed circuit board at this position. Therefore, the flux scattered from the cream solder during the soldering. The rate of occurrence of accidents that adhere to the surface of the elastic contact 30 increases. That is, when the flux adheres to the surface of the elastic contact 30, the flux forms an insulating layer, which causes a problem that a contact failure accident occurs due to the insulating layer formed of the flux.

Here, a method of soldering the surface mount type component will be briefly described. Cream solder is applied to the surface of the conductive layer to be soldered on the printed circuit board, and the reinforcing protruding pieces 20 and the surfaces of the terminals 31 are placed on the conductive layer to which the cream solder is applied. The printed circuit board on which the component is placed is passed through a furnace heated to, for example, about 260 ° C. to 300 ° C. At this time, cream solder is melted and soldering is performed.
An object of the present invention is to propose a structure capable of reducing the rate at which the flux generated from solder adheres to the elastic contact 30 during the soldering.

  According to the present invention, a reinforcing protruding piece is attached to a part of the bottom edge of the bottom surface of the insulating body holding the elastic contact so as to protrude outward from the bottom surface of the insulating body in parallel with the bottom surface. In a connector that is soldered to a conductive layer formed on a printed circuit board to be mounted to reinforce the mounting strength of the insulating body, the half on the protruding end side of the reinforcing protruding piece is adjacent to the side surface of the insulating body. The connector is characterized in that it is folded in the direction and has a structure in which the portions on both sides of the folded half piece are projected outward from the side of the reinforcing protruding piece.

According to the present invention, in the connector described above, the reinforcing protruding piece is bent from the lead-out portion of the insulating body in a direction toward the bottom surface of the insulating body, and the first bent portion is bent. third folding the folded down was the plate surface and the second bent portion Ru bent up in direction parallel to the bottom surface of the insulation body, the halves of the reinforcing projection piece countercurrent adjacent to the side surface of the insulating body Proposed a connector characterized in that a portion bent by the second bent portion and oriented parallel to the bottom surface of the insulating body is soldered to the conductive layer of the printed circuit board to be mounted To do.
According to the present invention, in the connector described above, the reinforcing protruding piece may be arranged such that the position of the third bent portion is higher than the position of the bottom surface of the insulating body between the second bent portion and the third bent portion. fifth for returning the direction parallel to the fourth bent portion for moving to the side, the direction of the plate surface of the bent-up was reinforcement protruding piece in the fourth bent portion and the bottom surface of the insulating body A connector characterized by having a structure with a bent portion is proposed.

According to the present invention, in the connector according to any one of the above, the insulating body has a vertical surface having a surface facing the side from which the reinforcing protruding piece protrudes and substantially perpendicular to the bottom surface of the insulating body. A connector having a structure in which an elastic contact that elastically contacts a non-contacting body protrudes and is supported on a vertical surface is proposed.
According to the present invention, in the connector described above, the terminal of the elastic contact is led out to the bottom surface of the insulating body, contacts the conductive layer of the printed board to be mounted on the same surface as the bottom surface of the insulating body, and is soldered to the conductive layer. We propose a connector with the above structure.

According to the connector having the structure according to the present invention, the protruding end side of the reinforcing protruding piece is folded back to the insulating body side, and both sides of the folded half piece are protruded outward from the both sides of the reinforcing protruding piece. In this case, the protruding portion receives the flux to be scattered and acts as a so-called scattering prevention cover, so that the flux can be prevented from scattering in a wide range. As a result, the rate at which the flux adheres to the surface of the elastic contact can be reduced.
Further, according to the present invention, the half piece bent to the outside of the side of the reinforcing protruding piece is protruded, and at the same time, the fourth bent portion and the fifth bent portion are provided so that the leading end side of the reinforcing protruding piece is provided. Since the protrusion part which acts as a scattering prevention cover is also formed, the flux can be received even in this protrusion part, and the scattering of the flux can be suppressed.

  In the present invention, the front end side of the reinforcing protruding piece is folded back toward the insulating body, both sides of the folded half piece are protruded outward from the side of the reinforcing protruding piece, and the fourth bent portion and the fifth folded portion are formed. It is best to form a protrusion protruding in parallel with the printed circuit board on the front end side of the reinforcing protrusion by providing the curved portion.

1 to 4 show a first embodiment of the present invention. In this embodiment, the tip of the reinforcing protruding piece 20 is extended longer than the reinforcing protruding piece described in the background art in a direction away from the side surface of the insulating body 10, and the extended portion is folded back toward the side surface of the insulating body 10 to reinforce. A folded half piece 25 is arranged on the upper surface side of the projecting piece 20. Further, projecting pieces 25 </ b> A are formed on both sides of the folded half piece 25. As shown in FIG. 3, the protruding piece 25 </ b> A protrudes outside the side edge 26 of the reinforcing protruding piece 20, that is, in a direction parallel to the side surface of the insulating body 10.
Since this projecting piece 25A opposes close to the plate surface of the printed circuit board (not shown in particular) during soldering, the flux generated from the cream solder application surface of the printed circuit board is received on the back surface of the projecting piece 25A. Diffusion to a wide range can be prevented.

Moreover, since the 3rd bending part 24-3 is formed in the front end side of the reinforcement protrusion piece 20 as shown in FIG. 4 in order to form the folding | returning half piece 25, this 3rd bending part 24-3 The thickness of the reinforcing protruding piece 20 apparently increased due to the formation. As a result, in the tip portion of the reinforcing protruding piece 20, the flux generated in the vicinity of the portion along the side of the tip has a higher rate of adhering to the outer peripheral surface of the third bent portion 24-3. The effect of reducing the amount of diffusion of can also be obtained.
Here, in this embodiment, the bottom shape of the insulating body 10 is a rectangle as shown in FIG. The reinforcing protruding piece 20 protrudes from one long side of the rectangle, and the reinforcing protruding piece 20 is soldered to the conductive layer of the printed circuit board to reinforce the mounting strength of the insulating body 10.

That is, the vertical surface 12 is formed on the insulating body 10 so as to face the long side on which the reinforcing protruding piece 20 is protruded, and the elastic contact 30 protrudes from the vertical surface 12. A contact object such as a battery contacts the elastic contact 30. In this contact state, the elastic contact 30 is elastically deformed, and the restoring force gives the insulating body 10 an elastic biasing force in the clockwise direction in the example shown in FIG. Therefore, by providing the reinforcing protruding piece 20 on the long side facing the vertical surface 12 and soldering the reinforcing protruding piece 20 to the conductive layer of the printed circuit board, the mounting strength of the insulating body 10 is reinforced and the insulating The body 10 can stably maintain its posture for a long time. Note that when the reinforcing protruding piece 20 is soldered to the printed board, the terminal 31 of the elastic contact 30 led out to the bottom surface 11 is also soldered to the printed board at the same time.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, a fourth bent portion 24-4 and a fifth bent portion 24-5 are provided between the second bent portion 24-2 and the third bent portion 24-3 of the reinforcing protruding piece 20. A case is shown in which a protruding piece 25B that acts as a scattering prevention cover is formed on the distal end side of the reinforcing protruding piece 20 by forming and forming the fourth bent portion 24-4 and the fifth bent portion 24-5. .
That is, the 4th bending part 24-4 is formed between the 2nd bending part 24-2 and the 3rd bending part 24-3 which were formed in the protrusion piece 20 for reinforcement. The fourth bent portion 24-4 is bent in a direction in which the position of the third bent portion 24-3 is moved higher than the position of the bottom surface of the insulating body 10. The plate surface of the reinforcing protruding piece 20 bent upward by forming the fourth bent portion 24-4 is parallel to the bottom surface 11 of the insulating body 10 by forming the fifth bent portion 24-5. The lower surface of the projecting piece 25B is arranged with a slight gap G from the position of the back surface 21 of the reinforcing projecting piece 20. This gap G is a gap to be opposed to the board surface of the printed board to be mounted. By making the facing gap G small, the flux capture rate can be increased. Although not shown in FIGS. 5 and 6, also in the second embodiment, both sides of the folded half piece 25 are projected in a direction parallel to the side surface of the insulating body 10 as shown in FIG. Form.

As a result, according to this embodiment, the protruding pieces 25A and 25B are formed on the outer side of the side edge 26 (FIG. 3) of the reinforcing protruding piece 20 and on the outer side of the tip of the reinforcing protruding piece 20, respectively. The flux generated from the periphery of the piece 20 is captured by these protruding pieces 25A and 25B, respectively, and the flux is prevented from scattering over a wide range. As a result, the rate at which the flux adheres to the elastic contact 30 can be reduced, and the possibility of a contact failure accident occurring on the exposed surface of the elastic contact 30 is eliminated.
Further, according to the second embodiment, since the protruding distance L1 of the reinforcing protruding piece 20 is set to be smaller than the distance L2 shown in FIG. 4, the contact area between the reinforcing protruding piece 20 and the printed circuit board. Can be reduced. As a result, the application area of the solder paste applied to the printed circuit board can be reduced. Thereby, the advantage that the amount of flux scattered from the solder paste can be reduced is obtained.

  The connector according to the present invention is utilized as a connector for maintaining a state in which a battery is in contact with a circuit inside an electronic device.

The perspective view for demonstrating the 1st Example of this invention. The side view of FIG. The bottom view of FIG. The side view for demonstrating the structure of the principal part of this invention. The side view for demonstrating the 2nd Example of this invention. The side view for demonstrating the state which incorporated the reinforcement protrusion piece shown in FIG. 5 in the insulation body. The perspective view for demonstrating the prior art. The side view of FIG. The side view for demonstrating the structure of the protrusion piece for reinforcement used for the prior art. The top view of FIG. Sectional drawing for demonstrating the internal structure of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Insulating body 24-1 1st bending part 11 Bottom surface 24-2 2nd bending part 12 Vertical surface 24-3 3rd bending part 13 Pin 24-4 4th bending part 20 Reinforcing protrusion piece 24-5 5th bending part 21 Back surface 25 Folding half piece 22 Leg 25A, 25B Projection piece 23 Claw 30 Elastic contact
31 terminals

Claims (5)

A reinforcing protruding piece is attached to a part of the bottom edge of the bottom surface of the insulating body holding the contact so as to protrude outward from the bottom surface in parallel with the bottom surface, and the reinforcing protruding piece is a printed board on which the insulating body is to be attached. In the connector that is soldered to the conductive layer formed in the structure and has a structure that reinforces the mounting strength of the insulating body,
The half piece on the protruding end side of the reinforcing protruding piece is folded back in the direction adjacent to the side surface of the insulating body, and both sides of the folded folding half piece are projected outward from the side of the reinforcing protruding piece. A connector characterized by its structure. 2. The connector according to claim 1, wherein the reinforcing projecting piece is bent from the lead-out portion of the insulating body in a direction toward the bottom surface of the insulating body, and the first bent portion is bent. the folding and second bent portions Ru bent up the bending was a plate surface direction parallel to the bottom surface of the insulating body, the halves of the reinforcing projection piece countercurrent adjacent to the side surface of the insulating body 3 and a bent portion, characterized in that the direction and portions which are bent in parallel with the bottom surface of the insulating body by the second bent portion is soldered to the conductive layer of the printed circuit board to be mounted Connector. 3. The connector according to claim 2, wherein the reinforcing projecting piece is insulated from the position of the bottom surface of the insulating body with the position of the third bent portion between the second bent portion and the third bent portion. and a fourth bent portion for moving the upper side of the body, to return the direction of the plate surface of the bent-up was the reinforcing protruding piece countercurrent parallel to the bottom surface of the insulating body in the fourth bent portion And a fifth bent portion for providing a connector. 4. The connector according to claim 1, wherein the insulating body has a vertical surface facing a side from which the reinforcing protruding piece protrudes and having a direction substantially perpendicular to the bottom surface of the insulating body. The connector is characterized in that an elastic contact that elastically contacts the contacted body protrudes and is supported on the vertical surface.   5. The connector according to claim 4, wherein a terminal of the elastic contact is led out to a bottom surface of the insulating body, contacts a conductive layer of a printed board to be mounted on the same surface as the bottom surface of the insulating body, and is soldered to the conductive layer. A connector characterized by that.

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