JP2007250485A - Fixing structure of terminal connected to power source - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a terminal connected to a power source in which a terminal to be connected to a power source is temporarily held securely and stably on a wiring board before being soldered so as not to fall off. <P>SOLUTION: This terminal connected to a power source includes: an electrode portion 21; and a leg portion 22 which has a first terminal portion 23 formed in a pin shape and a second terminal portion 24 bent in a valley shape. The electrode portion 21 is positioned on a wiring board 1 by inserting the second terminal portion 24 into a second hole portion 52 of a wiring board 1. The first terminal portion 23 inserted into a first hole portion 51 and the second terminal portion 24 inserted into a second hole portion 52 are soldered to soldering lands on the back surface of the wiring board 1. The leg portion 22 in a natural state is bent at its middle portion. The arrangement direction of the first terminal portion 23 and the second terminal portion 24 is adjusted in the arrangement direction of the first hole portion 51 and the second hole portion 52 by making the leg portion 22 deformed against its elasticity, then the first terminal portion 23 and the second terminal portion 24 are soldered to soldering lands on the back surface in a state of being inserted into the first hole portion 51 and the second hole portion 52. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power supply terminal mounting structure, and more specifically, a remote controller (hereinafter referred to as a remote controller used for remotely controlling a disk device such as a DVD player or a DVD recorder, a television receiver, a projector, or other various electric / electronic equipment sets. The present invention relates to a power terminal mounting structure employed in a “remote control”.

  This type of general-purpose remote control includes a battery box that houses a dry battery as a power source, and the battery box has a power terminal for connecting a power electrode such as an anode or a cathode of the dry battery and a circuit pattern of the wiring board. Equipped.

  A conventional example of the power terminal mounting structure will be described with reference to FIGS. FIG. 3 is an exploded perspective view showing the mounting structure of the power terminal, FIG. 4 is a plan view of the mounting structure, and FIG. 5 is a longitudinal side view of the mounting structure.

  3 to 5, the wiring board 1 is formed in a vertically long shape, a light emitting element (not shown) at the tip, and a mounting space S for the first and second power supply terminals 2 and 4 at the base. And a switch group (not shown) at the middle in the vertical direction. The wiring board 1 is accommodated in a case together with a rubber having a key top group (not shown). An output signal is transmitted from the light emitting element when the user appropriately selects and presses the key top of the rubber.

  As shown in FIG. 1, the mounting space S of the wiring board 1 has first holes 51 and 61 formed of round holes and slit-shaped second holes 52 corresponding to the power terminals 2 and 4, respectively. 62, and these are arranged in a straight line in the longitudinal direction of the second holes 52, 62. On the other hand, the power supply terminal 2 on one side includes an electrode portion 21 and a leg portion 22, and the leg portion 22 is bent into a pin-shaped first terminal portion 23 and a valley shape formed by bending. The two terminal portions 24 are provided, and the first terminal portion 23 and the second terminal portion 24 are linearly arranged in the direction in which the two falling portions 25 and 26 of the second terminal portion 24 are arranged. It is out. Therefore, as shown in FIG. 4, the leg portion 22 has a straight line shape in plan view at the place where the first and second terminal portions 23 and 24 are formed. Further, when the second terminal portion 24 is inserted into the second hole portion 52, the position of the first terminal portion 23 is restricted by the second hole portion 52, and the first terminal portion 23 cannot be forced into the first hole portion 51. The electrode portion 21 is positioned with respect to the wiring board 1 as well as being inserted. Furthermore, the first terminal portion 23 inserted through the first hole 51 and the second terminal portion 24 inserted through the second hole 52 are each soldered to the land on the back surface of the wiring board 1. In FIG. 5, reference numerals 71 and 72 denote solder piles.

  As can be seen from FIG. 3, the power supply terminal 4 on the other side has the same configuration, and includes an electrode part 41 and a leg part 42. The leg part 42 has a pin-shaped first terminal part 43 and a valley. The second terminal portion 44 is bent into a shape, and the first terminal portion 43 and the second terminal portion 44 are linear in the direction in which the two falling portions 44 and 46 of the second terminal portion 44 are arranged. Are lined up. Further, when the second terminal portion 44 is inserted into the second hole portion 62, the position of the first terminal portion 43 is restricted by the second hole portion 62, and the first terminal portion 43 cannot be forced into the first hole portion 61. The electrode portion 41 is positioned with respect to the wiring board 1 as well as being inserted. Furthermore, the first terminal portion 43 inserted through the first hole 61 and the second terminal portion 44 inserted through the second hole 62 are each soldered to the land on the back surface of the wiring board 1.

  In the two power supply terminals 2 and 4 in the figure, the electrode portion 21 of the power supply terminal 2 on one side is formed by a tapered coil spring, and the electrode portion 41 of the power supply terminal 4 on the other side is swirled. It is formed by a spring.

  On the other hand, conventionally, when attaching a terminal to a wiring board, various structures have been proposed in which the elastic part provided in the terminal can be elastically pressed against the wiring board to prevent the terminal from dropping out during soldering (for example, , See Patent Document 1 and Patent Document 2). These patent documents describe that a U-shaped or coil-shaped elastic part that can be expanded and contracted in a terminal is inserted into a single hole of a wiring board in an elastic state while being narrowed against its elasticity. In this way, a means for holding the terminal on the wiring board is employed to prevent the terminal from falling off during soldering.

In addition, research for preventing vibration noise of the battery crimp spring has also been performed (see, for example, Patent Document 3).
Japanese Utility Model Publication No. 6-23160 JP-A-11-242950 JP 2001-23591 A

  However, in the conventional example described with reference to FIGS. 3 to 5, the first terminal portions 23 and 43 and the second terminal portions 26 and 46 provided in the leg portions 22 and 42 of the power supply terminals 2 and 4 are wired. Since the main focus was on improving the assembly workability by facilitating insertion through the first holes 51 and 61 and the second holes 52 and 62 of the substrate 1, the first terminals 23 and 43 and the second terminals When the portions 26 and 46 are inserted into the first hole portions 51 and 61 and the second hole portions 52 and 62 of the wiring substrate 1 and then soldered to the land on the back surface of the wiring substrate 1, the first hole portion 51. , 61 and the second hole portions 52, 62, the first terminal portions 23, 43 and the second terminal portions 26, 46 are easily pulled out, and the power supply terminals 2, 4 are likely to be detached from the wiring board 1. there were.

  In addition, in Patent Document 1 and Patent Document 2, the dimensions of the U-shaped or coil-shaped elastic portion of the terminal must be determined with a relatively high accuracy in accordance with the dimension of the hole on the wiring board side. For example, it can be said that a satisfactory drop-out preventing function is not exhibited, and that the shape of the elastic portion is relatively complicated, so that the processing is troublesome and easily leads to an increase in cost.

  The present invention has been made in view of the above problems, and it is possible to perform soldering without significantly reducing the assembly workability by adding a slight change to the configuration of the conventional example described with reference to FIGS. Provided is a power supply terminal mounting structure that can securely hold a power supply terminal temporarily so that it does not fall off the wiring board before mounting, and can perform soldering work easily and accurately. For the purpose.

  A power supply terminal mounting structure according to the present invention includes an electrode portion that is in contact with a power supply electrode, and a leg portion having a pin-shaped first terminal portion and a second terminal portion that is bent into a valley shape. By inserting the second terminal portion into the second hole portion of the wiring board having a first hole portion and a slit-like second hole portion, the portion being formed by a bent wire having elasticity. The electrode part is positioned with respect to the wiring board, and the first terminal part inserted into the first hole part and the second terminal part inserted into the second hole part are provided. These are soldered to lands on the back surface of the wiring board.

  And the said leg part in a natural state is bend | folded in the direction in alignment with the board surface of the said wiring board in the intermediate location, and the alignment direction of the said 1st terminal part and a 2nd terminal part is the 1st hole part of the said wiring board And the second hole portion intersect with each other, and by deforming the leg portion against its elasticity, the arrangement direction of the first terminal portion and the second terminal portion is changed to the second direction of the wiring board. The second terminal by inserting the first terminal portion and the second terminal portion into the first hole portion and the second hole portion, respectively, in accordance with the arrangement direction of the first hole portion and the second hole portion. The first terminal portion and the second terminal portion are soldered to the land on the back surface of the wiring board in a state where the portion is pressed against the hole wall surface of the second hole portion.

  According to the present invention, without complicating the shape of the pin-shaped first terminal portion and the valley-shaped second terminal portion, the power supply terminal legs are simply bent at the intermediate portion thereof, during soldering. The power supply terminal is surely temporarily held on the wiring board. Therefore, since soldering is performed easily and accurately and the assembly workability is improved, it is beneficial in increasing mass productivity.

  In the present invention, the second terminal portion has falling portions located at two locations in the perspective direction with respect to the first terminal portion, and the leg portions are located on the side closer to the first terminal portion. It may be bent in the direction along the plate surface of the wiring board at the base of the descending portion.

The power supply terminal mounting structure according to the present invention is further embodied by adopting the following configuration. That is, a wire rod having elasticity having an electrode portion that is in contact with the power supply electrode and a leg portion having a pin-shaped first terminal portion and a second terminal portion bent in a valley shape, and the leg portion is bent. The electrode part is positioned with respect to the wiring board by inserting the second terminal part into the second hole part of the wiring board having the first hole part and the slit-like second hole part. The first terminal portion inserted into the first hole portion and the second terminal portion inserted into the second hole portion are respectively connected to lands on the back surface of the wiring board. In the mounting structure of the power supply terminals that are soldered,
The leg portion in the natural state is bent at a middle portion in a direction along the plate surface of the wiring board, and the arrangement direction of the first terminal portion and the second terminal portion is the first hole portion of the wiring board and the first hole portion. It intersects with the direction of alignment with the two holes, and by deforming the legs against its elasticity, the direction of alignment of the first terminal portion and the second terminal portion is changed to the first hole of the wiring board. The second terminal part is inserted into the first hole part and the second hole part through the first terminal part and the second terminal part in accordance with the arrangement direction of the part and the second hole part. The first terminal portion and the second terminal portion are soldered to a land on the back surface of the wiring board in a state of being pressed against the hole wall surface of the second hole portion, and the second terminal portion is connected to the first terminal portion. There are falling portions located at two locations in the perspective direction with respect to the terminal portion, and the leg portion is on the side closer to the first terminal portion. The first hole portion and the second hole portion of the wiring board are linearly formed in the longitudinal direction of the first hole portion while being bent in the direction along the plate surface of the wiring board at the base of the falling portion to be placed. It is made more concrete by adopting the configuration that they are lined up.

  As described above, according to the present invention, the power supply prior to soldering can be reduced without significantly degrading the assembly workability by adding a slight change to the configuration of the conventional example described with reference to FIGS. It is possible to securely hold the service terminal securely and stably so as not to fall off the wiring board. As a result, the soldering operation can be performed easily and accurately, and the mass productivity is improved.

  FIG. 1 is an exploded perspective view showing a power supply terminal mounting structure according to an embodiment of the present invention, and FIG. 2 is a plan view of the mounting structure.

  In the power supply terminal mounting structure shown in FIGS. 1 and 2, the two power supply terminals 2 and 4 are shown in FIG. 3 in that their leg portions 22 and 42 are bent at intermediate positions. The configuration is different from the power terminals 2 and 4.

  This will be described with respect to the power supply terminal 2 on one side. The power supply terminal 2 includes an electrode portion 21 and a leg portion 22, and a pin-shaped first portion in which the leg portion 22 is formed by bending. Although it has the same configuration as the power supply terminal 2 shown in FIG. 3 in that it has a terminal portion 23 and a second terminal portion 24 bent into a valley shape, one side of FIGS. 1 and 2 In the power supply terminal 2, the leg portion 22 is bent at the root 26 a of the falling portion 26 located on the side close to the first terminal portion 23. For this reason, the power supply terminal of FIG. 3 which does not have such a bending location at the point that the leg part 22 is bent by the base 26a of the falling part 26 located in the side close | similar to the 1st terminal part 23. 2 and different. The bending direction of the leg portion 22 at the root 26 a of the falling portion 26 is a direction along the plate surface of the wiring board 1 when the power supply terminal 2 is attached to the wiring board 1.

  On the other hand, the configuration of the wiring board 1 has the same configuration as that of the wiring board 1 shown in FIG. In other words, the mounting space S of the vertically long wiring board 1 is provided with a first hole portion 51 formed of a round hole and a slit-shaped second hole portion 52 corresponding to the power supply terminal 2. The holes 52 are arranged in a straight line in the longitudinal direction. Therefore, in the power supply terminal 2 in the natural state, the second terminal portion 24 is positioned parallel to the second hole portion 52 on the wiring board 1 side, as can be seen from the phantom line in FIG. In this state, the arrangement direction of the first terminal portion 23 and the second terminal portion 24 provided in the leg portion 22 is relative to the arrangement direction of the first hole portion 51 and the second hole portion 52 of the wiring board 1. Intersect.

  In addition, a light emitting element (not shown) is provided at the tip of the wiring board 1, and a switch group (not shown) is provided in the longitudinal intermediate portion thereof. It is accommodated in a case with a rubber equipped with. An output signal is transmitted from the light emitting element when the user appropriately selects and presses the key top of the rubber.

  In the assembly process for attaching the power supply terminal 2 on one side to the wiring board 1, the bent portion of the root 26 a of the falling portion 26 of the leg portion 22 of the power supply terminal 2 is deformed against its elasticity. The arrangement direction of the first terminal portion 23 and the second terminal portion 24 is matched with the arrangement direction of the first hole portion 51 and the second hole portion 52 of the wiring board 1, and the first hole portion 51 and the second hole portion 52 are aligned with each other. The first terminal portion 23 and the second terminal portion 24 are inserted through the two hole portions 52 in an arbitrary order. In this way, as shown in FIG. 2, the leg portion 22 is shaped linearly against the elasticity of the bent portion, and the second terminal portion 24 becomes the second hole portion due to the resilience of the bent portion. 52, and the first terminal portion 23 is also elastically pressed against the hole wall surface of the first hole portion 51, so that the power supply terminal 2 does not move to the wiring board 1 due to the elastic pressure, and It is temporarily held securely so that it does not fall out. In addition, the electrode unit 21 is accurately positioned with respect to the wiring board 1. Therefore, when the first terminal portion 23 and the second terminal portion 24 are soldered to the land on the back surface of the wiring board 1 in this state, the soldering is performed easily and accurately, and the assembly workability is improved. However, it helps to increase the mass productivity in the assembly line.

  The leg part 42 of the power supply terminal 4 on the other side shown in FIG. 1 has the same configuration as that of the power supply terminal 4 on the one side. That is, the electrode part 41 and the leg part 42 are provided, and the leg part 42 has a pin-shaped first terminal part 43 formed by bending and a second terminal part 44 bent into a valley shape. Further, the leg portion 42 is bent at the root 46 a of the falling portion 46 located on the side close to the first terminal portion 43. The bending direction of the leg portion 42 at the root 46 a of the falling portion 46 is a direction along the plate surface of the wiring board 1 when attached to the power supply terminal 44 wiring board 1. On the other hand, the first hole 61 formed of a round hole and the slit-shaped second hole 62 provided in the mounting space S on the wiring board 1 side are linearly arranged in the longitudinal direction of the second hole 62. It is out. Therefore, in the power supply terminal 4 in the natural state, the first terminal provided in the leg portion 42 in a state where the second terminal portion 44 is positioned in parallel with the second hole portion 62 on the wiring board 1 side. The alignment direction of the portion 43 and the second terminal portion 44 intersects the alignment direction of the first hole 61 and the second hole 62 of the wiring board 1.

  The assembly process for attaching the power supply terminal 4 to the wiring board 1 is the same as the assembly process for attaching the one power supply terminal 2 to the wiring board 1 described above. Therefore, at the time of soldering, the power supply terminal 4 is borrowed and held so as not to drop off the wiring board 1, and the soldering is easily and accurately performed to improve the assembly workability. Helps to improve sex.

  In the two power supply terminals 2 and 4 in the figure, the electrode portion 21 of the power supply terminal 2 on one side is formed by a tapered coil spring, and the electrode portion 41 of the power supply terminal 4 on the other side is swirled. It is formed by a spring.

  In FIG. 1, the leg portions 22 and 42 of the respective power supply terminals 2 and 4 are bent inward at the roots 26 a and 46 a of the falling portions 26 and 46. The leg portions 22 and 42 may be bent outward at the roots 26a and 46a of 46.

  Further, the lateral runout width of the first terminal portion 23 by bending shown by reference numeral L1 in FIG. 1 may be about 5 mm, but not so much strictness (dimensional accuracy) is required for the length of the lateral runout width L1. .

It is the disassembled perspective view which showed the attachment structure of the terminal for power supplies which concerns on embodiment of this invention. It is a top view of the attachment structure. It is the disassembled perspective view which showed the attachment structure of the terminal for power supplies by a prior art example. It is a top view of the same attachment structure by a prior art example. It is a vertical side view of the same attachment structure by a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiring board | substrate 21,41 Electrode part 22,42 Leg part 23,43 1st terminal part 24,44 2nd terminal part 25,26,45,46 Falling part 25a, 26a, 45a, 46a Root of falling part 51 , 61 First hole 52, 62 Second hole

Claims (3)

Formed by an elastic wire having an electrode portion that is in contact with the power supply electrode and a leg portion having a pin-shaped first terminal portion and a second terminal portion bent into a valley shape, and the leg portion is bent. The electrode part is positioned with respect to the wiring board by inserting the second terminal part into the second hole part of the wiring board having the first hole part and the slit-like second hole part. The first terminal portion inserted into the first hole portion and the second terminal portion inserted into the second hole portion are respectively soldered to lands on the back surface of the wiring board. In the mounting structure of the power supply terminal
The leg portion in the natural state is bent at a middle portion in a direction along the plate surface of the wiring board, and the arrangement direction of the first terminal portion and the second terminal portion is the first hole portion of the wiring board and the first hole portion. It intersects with the direction of alignment with the two holes, and by deforming the legs against its elasticity, the direction of alignment of the first terminal portion and the second terminal portion is changed to the first hole of the wiring board. The second terminal part is inserted into the first hole part and the second hole part through the first terminal part and the second terminal part in accordance with the arrangement direction of the part and the second hole part. The first terminal portion and the second terminal portion are soldered to the land on the back surface of the wiring board in a state of being pressed against the hole wall surface of the second hole portion,
The second terminal portion has a falling portion located at two locations in the perspective direction with respect to the first terminal portion, and the leg portion is located at the base near the first terminal portion. The first hole and the second hole of the wiring board are linearly aligned in the longitudinal direction of the first hole, and are bent in a direction along the plate surface of the wiring board. Mounting structure for power supply terminals. Formed by an elastic wire having an electrode portion that is in contact with the power supply electrode and a leg portion having a pin-shaped first terminal portion and a second terminal portion bent into a valley shape, and the leg portion is bent. The electrode part is positioned with respect to the wiring board by inserting the second terminal part into the second hole part of the wiring board having the first hole part and the slit-like second hole part. The first terminal portion inserted into the first hole portion and the second terminal portion inserted into the second hole portion are respectively soldered to lands on the back surface of the wiring board. In the mounting structure of the power supply terminal
The leg portion in the natural state is bent at a middle portion in a direction along the plate surface of the wiring board, and the arrangement direction of the first terminal portion and the second terminal portion is the first hole portion of the wiring board and the first hole portion. It intersects with the direction of alignment with the two holes, and by deforming the legs against its elasticity, the direction of alignment of the first terminal portion and the second terminal portion is changed to the first hole of the wiring board. The second terminal part is inserted into the first hole part and the second hole part through the first terminal part and the second terminal part in accordance with the arrangement direction of the part and the second hole part. The power terminal mounting structure, wherein the first terminal portion and the second terminal portion are soldered to a land on the back surface of the wiring board in a state of being pressed against the hole wall surface of the second hole portion. . The second terminal portion has a falling portion located at two locations in the perspective direction with respect to the first terminal portion, and the leg portion is located at the base near the first terminal portion. The power supply terminal mounting structure according to claim 2, wherein the power supply terminal is bent in a direction along a plate surface of the wiring board.

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