JP5681261B1 - PCB mounting terminals - Google Patents

Abstract

An object of the present invention is to obtain a mechanical holding force and a reliable electrical connection with a simple structure to suppress damage to a substrate and prevent occurrence of misalignment. A board mounting terminal 1 is inserted into through holes 3 and 4 formed in a board 2 and mounted and fixed to the board 2 by soldering, and is connected to a connected member formed on the tip side. Part 5, terminal body part 6 formed on the base end side of connection part 5, and protruding so as to extend in the insertion direction from terminal body part 6 to through holes 3, 4 and inserted into through holes 3, 4. And a plurality of pin-shaped insertion portions 10. The plurality of insertion portions 10 are a main press-fitting portion 11 for positioning that is press-fitted into the through-hole 3, a light contact portion 20 for error absorption that is more deformable than the main press-fitting portion 11 and contacts the through-hole 4. Consists of. The light contact portion 20 includes a small-width piece portion 21 formed narrower than the main press-fitting portion 11 and a round-shaped piece portion 22 formed in a part of the small-width piece portion 21 and in contact with the through hole 4. [Selection] Figure 1

Description

  The present invention relates to a board mounting terminal which is inserted into a through hole of a board and mounted and fixed to the board by soldering.

  2. Description of the Related Art Conventionally, as a substrate mounting terminal that is inserted into a through hole of a substrate and mounted and fixed to the substrate by soldering, for example, a mounting structure to a substrate disclosed in Patent Document 1 below is known. This mounting structure has a structure in which a soldering portion of a terminal inserted into a through hole of a substrate is divided into a plurality of parts.

  Then, the cross-sectional shape of one soldering part is rectangular and the four corners are formed by being in contact with the inner peripheral surface of the through hole, respectively, and the other soldering part is rectangular in cross-sectional shape. The four corners are formed so as to be loosely inserted without contacting the inner peripheral surface of the through hole. Thereby, it is less likely to damage the conductor on the inner wall of the through hole as compared with the case where both of the two soldering portions are press-fitted, and the mounting work is facilitated. Further, it is not necessary to use a jig for holding the terminal in the soldering and fixing work, and it is possible to prevent terminal distortion and misalignment.

Japanese Patent No. 4586745

  However, in the structure of the prior art disclosed in Patent Document 1 above, when the size of the soldered portion to be loosely inserted is smaller than the others, the terminal resistance of the smaller one increases and the temperature of the terminal rises. The problem of end up occurs. In addition, when the size of the soldering part is made the same and the hole diameter of the through hole is changed, a drill with two kinds of hole diameters is required, so that there is a problem that the cost and man-hour for drilling increase.

  Furthermore, in a structure in which one of the soldering parts is press-fitted and the other is loosely inserted, alignment after mounting on the board is difficult to obtain, the mechanical holding force tends to decrease, and depending on the state of soldering up, the adhesion to the board There is also a problem that cannot be obtained sufficiently.

  The present invention solves the above-mentioned problems caused by the prior art, can obtain a mechanical holding force and a reliable electrical connection with a simple structure, and prevents the occurrence of misalignment while suppressing damage to the substrate. An object of the present invention is to provide a board-mounted terminal that can be used.

  The board mounting terminal according to the present invention is a board mounting terminal that is inserted into a through hole formed in the board and mounted and fixed to the board by soldering, and is connected to a connected member formed on the tip side. A connecting portion; a terminal body portion formed on a proximal end side of the connecting portion; and a plurality of pin-like shapes protruding from the terminal body portion so as to extend in an insertion direction into the through hole and inserted into the through hole The plurality of insertion portions include a main press-fitting portion for positioning that is press-fitted into the through-hole, and an error absorbing member that is more deformable than the main press-fitting portion and contacts the through-hole. The light contact portion includes a small-width piece portion formed narrower than the main press-fitting portion, and a round-shaped piece portion that is formed in a part of the small-width piece portion and contacts the through hole. It is characterized by comprising.

  According to the board mounting terminal according to the present invention, the plurality of pin-like insertion parts inserted into the through holes of the board are positioned to be press-fitted into the through holes, and are more easily deformable than the main press-fitting parts. Therefore, it is possible to obtain a mechanical holding force and a reliable electrical connection because each insertion portion is in reliable contact with the through hole.

  In addition, the light contact portion is composed of a narrow piece formed narrower than the main press-fit portion and a round-shaped piece formed in a part of the narrow piece and contacting the through hole. Even if the pitch of the hole is shifted to the maximum extent, the small piece can be bent and part of the round piece can contact the through hole, preventing damage to the through hole and preventing backlash, The occurrence of misalignment can be prevented.

  In one embodiment of the present invention, the light contact portion is formed so that the width of the round-shaped piece portion is equal to or larger than the hole diameter of the through hole.

  In another embodiment of the present invention, the light contact portion has a width of the round shape piece portion smaller than a diameter of the through hole, and a width of the round shape piece portion on an inner peripheral surface of the through hole. It forms so that the one end part of a direction may contact | abut.

  In still another embodiment of the present invention, the terminal body portion is formed in a shape in which both side regions of the small-width piece portion of the light contact portion are cut out over a predetermined range.

  In still another embodiment of the present invention, three or more of the plurality of insertion portions are formed, and the main press-fitting portion is formed at a position near the center in the arrangement direction of the plurality of insertion portions. .

  According to the present invention, a mechanical holding force and a reliable electrical connection can be obtained with a simple structure, damage to the substrate can be suppressed, and occurrence of misalignment can be prevented.

It is a front view which shows the whole structure of the board | substrate mounting terminal which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the mounting state of the board mounting terminal. It is explanatory drawing which shows the mounting state of the board mounting terminal. It is explanatory drawing which shows the mounting state of the board | substrate mounting terminal which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the mounting state of the board | substrate mounting terminal which concerns on the 3rd Embodiment of this invention.

  Hereinafter, a board mounting terminal according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view showing the overall structure of the board-mounted terminal according to the first embodiment of the present invention. 2 and 3 are explanatory views showing the mounting state of the board mounting terminals. As shown in FIGS. 1-3, the board | substrate mounting terminal 1 which concerns on 1st Embodiment is inserted in the through-holes 3 and 4 formed in the board | substrate 2 (refer FIG. 2 etc.), and is attached to the board | substrate 2 by soldering. A terminal that is fixedly mounted.

  The board mounting terminal 1 is formed by, for example, punching a plate-like metal (iron, copper, copper alloy, etc.) base material, and connected to a connected member (not shown) formed on the tip side. And a terminal body portion 6 formed on the base end side of the connection portion 5. The board mounting terminal 1 is formed to project from the terminal body 6 in the insertion direction of the board 2 into the plurality of through holes 3 and 4 and is inserted into the through holes 3 and 4. Part 10.

  The insertion part 10 includes a main press-fitting part 11 for positioning the board mounting terminal 1 press-fitted into the through-hole 3 and a light contact for error absorption that is more deformable than the main press-fitting part 11 and contacts the through-hole 4. Part 20. The light contact portion 20 includes a small-width piece portion 21 that is formed thinner than the main press-fit portion 11 and a round-shaped piece portion 22 that is formed in a part of the small-width piece portion 21 and press-contacts or contacts the through hole 4. Therefore, the light contact portion 20 is connected to the substrate 2 by contacting only the round-shaped piece portion 22 through the through hole 4.

  As shown in the figure, the connecting portion 5 is composed of a bifurcated clamping pressure contact portion for clamping a tab type connecting portion of a tab terminal as a connected member, for example. In addition, the connection part 5 can be used as a connection part which implement | achieves arbitrary connection aspects, such as what is called a rod-shaped male type or cylindrical female type connection part, a tab type connection part. The terminal body portion 6 mechanically supports the connection portion 5 on the proximal end side of the connection portion 5.

  The substrate 2 is made of, for example, a printed circuit board, and wiring is formed on the surface and the inner peripheral surfaces 3a and 4a of the through holes 3 and 4 although not shown. The through holes 3 and 4 are formed with, for example, the same hole diameter or different hole diameters. The main press-fitting portion 11 of the insertion portion 10 is formed, for example, such that its width W1 is larger than the hole diameter φ1 of the through hole 3.

  In the light contact portion 20 of the insertion portion 10, the small-width piece portion 21 is formed such that the width W <b> 2 is smaller than the width W <b> 1 of the main press-fit portion 11. Further, the round-shaped piece portion 22 is formed such that the maximum width W3 is equal to or larger than the hole diameter φ2 of the through hole 4. The round-shaped piece portion 22 is formed in a round shape in which both ends in the width direction protrude in a curved shape from both end portions of the small-width piece portion 21 continuing from the terminal body portion 6.

  The round-shaped piece portion 22 may be formed so that the maximum width W3 is less than the hole diameter φ2 of the through hole 4. In this case, the round-shaped piece portion 22 is formed so that one of both end portions in the width direction abuts on the inner peripheral surface 4a of the through hole 4 when completely inserted into the through hole 4. The board mounting terminal 1 configured as described above is mounted on the board 2 as follows.

  That is, when the pitch between the through-holes 3 and 4 is narrower than the pitch between the main press-fitting part 11 and the light contact part 20 of the insertion part 10, the main press-fitting part 11 has a through-hole as shown in FIG. The inner peripheral surface 3 a is press-fitted in a straight manner with respect to 3 and both ends thereof are pressed into contact with each other, and the light contact portion 20 is inserted into the through-hole 4 so as to bend in the direction of the through-hole 3.

  At this time, as shown in FIG. 2B, the light contact portion 20 is in a state in which one end portion of the round-shaped piece portion 22 is in contact with the inner peripheral surface 4 a on the opposite side to the through hole 3 direction of the through hole 4. . Therefore, the position of the board mounting terminal 1 on the board 2 is determined by the relationship between the main press-fitting part 11 and the through hole 3, and the connection of the board mounting terminal 1 is connected to the through holes 3 and 4 by the light contact part 20 together with the main press-fitting part 11. It is definitely done.

  On the other hand, when the pitch between the through holes 3 and 4 is wider than the pitch between the main press-fitting part 11 and the light contact part 20 of the insertion part 10, as shown in FIG. 3 is press-fitted in a straight manner and is pressed into contact with the inner peripheral surface 3a in the same manner as described above, and the light contact portion 20 is inserted into the through hole 4 so as to bend in the direction opposite to the through hole 3 direction.

  At this time, the light contact part 20 will be in the state which the one end part of the round-shaped piece part 22 contact | connects the inner peripheral surface 4a of the through-hole 3 direction of the through-hole 3 as shown in FIG.3 (b). Accordingly, as in the case shown in FIG. 2, the position of the board mounting terminal 1 on the board 2 is determined by the relationship between the main press-fitting part 11 and the through hole 3, and the connection of the board mounting terminal 1 is light with the main press-fitting part 11. The contact portion 20 reliably performs the through holes 3 and 4.

  As described above, according to the board mounted terminal 1 according to the first embodiment, the main press-fitting portion 11 and the light contact portion 20 of the insertion portion 10 have the hole diameters φ1 and φ2 of the through-holes 3 and 4 and the through-holes 3 and 3. Since the contact between the through holes 3 and 4 is ensured in a state where various tolerances such as the pitch between 4 and the pitch between the main press-fitting portion 11 and the light contact portion 20 are absorbed, the mechanical holding force and the reliable electrical connection are ensured. Thus, the damage to the through holes 3 and 4 can be suppressed while preventing the occurrence of play, and the occurrence of misalignment of the terminals can be prevented.

  In addition, since the light contact portion 20 of the insertion portion 10 is securely in contact with the inner peripheral surface 4a of the through hole 4, the light contact portion 20 is mechanically held by solder when soldering to the substrate 2 is performed. Even if a soldering failure occurs without being fixed, the connection is ensured, so that the electrical connection reliability is remarkably improved, and the mechanical strength can be reliably increased.

  FIG. 4 is an explanatory view showing a mounting state of the board mounting terminals according to the second embodiment of the present invention. As shown in FIG. 4, the board mounting terminal 1 </ b> A according to the second embodiment is that the light contact part 20 of the insertion part 10 has a spring property so that it can be easily bent. This is different from the mounting terminal 1.

  That is, in the terminal body portion 6 of the board mounting terminal 1A, both side regions of the small-width piece portion 21 of the light contact portion 20 are largely cut out over a predetermined range from the base end surface 6a of the terminal body portion 6 to the connection portion 5. It is formed in a shape. Thereby, since the light contact part 20 is easy to bend compared with the light contact part 20 of the board | substrate mounting terminal 1 which concerns on 1st Embodiment, the board mounting terminal 1A can exhibit the effect mentioned above, and tolerance. The absorption range can be further expanded.

  FIG. 5 is an explanatory view showing a mounting state of the board mounting terminals according to the third embodiment of the present invention. As shown in FIG. 5, the board mounting terminal 1B according to the third embodiment is different from the board mounting terminal 1 according to the first embodiment in that a plurality of light contact parts 20 of the insertion part 10 are provided. doing.

  That is, the insertion part 10 of the board mounting terminal 1B includes two light contact parts 20 and a main press-fitting part 11 arranged between them. As described above, the insertion portion 10 may have three or more configurations. In addition, the connection part 5 of the board | substrate mounting terminal 1B consists of a some tab type connection part. The above-described effects can also be achieved by the board mounting terminal 1B configured as described above.

1, 1A, 1B Board mounting terminal 2 Board 3, 4 Through hole 5 Connection part 6 Terminal body part 10 Insertion part 11 Main press-fit part 20 Light contact part 21 Narrow piece part 22 Round shape piece part

Claims (5)

A board mounting terminal that is inserted into a through hole formed in the board and mounted and fixed to the board by soldering,
A connecting portion connected to the connected member formed on the distal end side;
A terminal body portion formed on the proximal end side of the connection portion;
A plurality of pin-like insertion portions that are formed so as to extend in the insertion direction from the terminal body portion to the through hole and are inserted into the through hole;
The plurality of insertion portions are:
A main press-fitting portion for positioning to be press-fitted into the through hole;
It consists of a light contact part for error absorption that is more deformable than the main press-fitting part and contacts the through hole,
The light contact portion includes a small-width piece portion formed narrower than the main press-fitting portion, and a round-shaped piece portion formed in a part of the small-width piece portion and in contact with the through hole, and the round-shaped piece board mounting terminal, wherein the parts that absorb the error in the pitch between the present press-fit portion by tilting the small width pieces around and said light contact portion.   The board mounted terminal according to claim 1, wherein the light contact portion is formed such that a width of the round-shaped piece portion is equal to or larger than a diameter of the through hole.   The light contact portion is formed such that the width of the round shape piece portion is less than the hole diameter of the through hole, and one end portion in the width direction of the round shape piece portion is in contact with the inner peripheral surface of the through hole. The board mounting terminal according to claim 1, wherein the board mounting terminal is formed.   The board mounting according to any one of claims 1 to 3, wherein the terminal body part is formed in a shape in which both side regions of the small-width piece part of the light contact part are cut out over a predetermined range. Terminal.   The plurality of insertion portions are formed in three or more, and the main press-fitting portion is formed in a vicinity position including the center in the arrangement direction of the plurality of insertion portions. The board mounting terminal according to any one of the preceding claims.

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