WO2008038331A1 - Press fit terminal - Google Patents

Press fit terminal Download PDF

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Publication number
WO2008038331A1
WO2008038331A1 PCT/JP2006/318931 JP2006318931W WO2008038331A1 WO 2008038331 A1 WO2008038331 A1 WO 2008038331A1 JP 2006318931 W JP2006318931 W JP 2006318931W WO 2008038331 A1 WO2008038331 A1 WO 2008038331A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
hole
fit terminal
end side
center
Prior art date
Application number
PCT/JP2006/318931
Other languages
French (fr)
Japanese (ja)
Inventor
Yasushi Saitoh
Original Assignee
Autonetworks Technologies, Ltd.
Sumitomo Wiring Systems, Ltd.
Sumitomo Electric Industries, Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd filed Critical Autonetworks Technologies, Ltd.
Priority to PCT/JP2006/318931 priority Critical patent/WO2008038331A1/en
Publication of WO2008038331A1 publication Critical patent/WO2008038331A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board

Definitions

  • the present invention relates to a press-fit terminal having a connection portion that is inserted in a press-fit state into a conductive through-hole of a substrate incorporated in an electronic device and is electrically connected to the through-hole.
  • the present invention relates to press-fit terminals that are optimally used in control devices used in harsh environments such as high temperatures and high humidity in industrial equipment. Background art
  • a terminal called a press-fit terminal is inserted into a conductive through hole provided on the board, and this terminal is mechanically connected without soldering.
  • a known method of fixing There is a known method of fixing.
  • a press-fit terminal is arranged between a guide part inserted into a through hole of a board, a mounting part attached to a board connector, and the like, and between the guide part and the mounting part. It is formed to have a large width and has a connection portion that is inserted into the through hole in a press-fitted state and electrically connected.
  • the press-fit terminal is inserted into the through hole of the board from the guide part, and a contact load larger than the diameter of the through hole is press-fitted into the through hole to generate a contact load and mechanically hold it. The force increases and a stable electrical connection is obtained.
  • the substrate is generally formed by laminating and pressing a plurality of sheets impregnated with epoxy resin in which glass fibers are vertically and horizontally combined, and penetrates the surface of the circuit board and the wiring circuit pattern of the conductive member on the surface.
  • a through hole is provided.
  • the through hole of the substrate is plated with copper plating or the like from the inner peripheral wall of the through hole to the periphery of the through hole opening on the substrate surface, and the through hole has conductivity. It is electrically connected to the wiring circuit pattern.
  • a press-fit terminal When a press-fit terminal is press-fitted into a through-hole of a board, the press-fit connection portion of the press-fit terminal first comes into contact with the periphery of the opening of the through hole, and a load is applied. Press fit into the hall.
  • a board used for a control device having a large vibration such as an automobile needs to secure electrical connection reliability and a sufficient securing force to the board of a press-fit terminal. Therefore, in order to obtain a high holding force, for example, a high-load type press-fit terminal in which the width of the press-fit connection portion is formed to be larger than the diameter of the through hole and the press-fitting size is increased is known (for example, JP 2004-127610 A).
  • the press-fit terminal is pressed.
  • the damage to the substrate itself may greatly deteriorate the substrate characteristics such as insulation.
  • the problem to be solved by the present invention is to increase the holding force of the press-fit terminal with respect to the through hole and reduce the insertion force when press-fitting the press-fit terminal into the through hole, thereby reducing damage to the substrate. It is to provide a press-fit terminal that can be used.
  • a tapered guide portion for guiding to the through hole of the substrate is provided on the front end side, and an attachment portion for connecting to another terminal is provided on the rear end side
  • the connection part for electrical connection with the through hole is provided between the inside and the mounting part, and the connection part is placed on the front and back side of the press fit terminal that is inserted into the through hole of the board in a press-fitted state. It consists of a slit part with a width that penetrates and two beam members facing each other across the slit part, and the width of the connection part is the maximum at the center of the connection part, which is the central position in the axial direction of the connection part. As a result, it was formed to gradually narrow toward the front end and rear end.
  • This type of press-fit terminal has a beam member with a thickness that is thinner at the front end of the connection and at the rear end of the connection than the center of the connection.
  • the gist of the press-fit terminal is characterized in that the length from the center of the connection portion to the rear end side is shorter than the length from the center of the connection portion to the front end side.
  • the holding force with respect to the through-hole of the substrate can be increased to be a high-load type terminal, and the insertion force of the press-fit terminal when being press-fitted into the substrate
  • the thickness damage to the substrate can be reduced.
  • the load on the insertion device used for inserting the press-fit terminal can be reduced, and the insertion work is facilitated and the workability is improved.
  • FIG. 1 (a) is a front view showing an example of the press-fit terminal of the present invention, (b) is a cross-sectional view taken along line AA of (a), and (c) is a cross-sectional view of (a). It is a BB line sectional view.
  • FIG. 2 is an explanatory view showing a state where a press-fit terminal is inserted into a substrate, where (a) shows a state before insertion, and (b) shows a state after insertion.
  • FIG. 3 (a) to (g) are front views showing press-fit terminals used in Example 1 and Comparative Examples 1 to 6.
  • FIG. 4 (a) to (g) are graphs showing the insertion force test results of Example Comparative Examples 1 to 6.
  • FIG. 5 (a) to (g) are graphs showing test results of Pd values of Example 1 and Comparative Examples 1 to 6.
  • FIG. 6 is an explanatory diagram showing a force applied when a press-fit terminal is inserted into a through hole of a substrate.
  • FIG. 7 is a graph showing the relationship between the amount of press-fit terminal insertion and the insertion force Fi.
  • FIG. 8 is a graph showing the relationship between the press-fit terminal insertion amount and the contact load Pi.
  • FIG. 9 is a graph showing the relationship between the amount of press-fit terminal insertion and the contact angle ⁇ .
  • FIG. 10 is a graph showing the relationship between the amount of press-fit terminal insertion and the contact area S.
  • FIG. 11 A diagram showing the relationship between the amount of press-fit terminal insertion and the pressure Pd applied to the through hole.
  • FIG. 1 (a) is a front view showing an example of the press-fit terminal of the present invention
  • (b) is a cross-sectional view taken along line A-A of (a)
  • (c) is a line B-B of (a).
  • 2A and 2B are explanatory views showing a state in which the press-fit terminal is inserted into the substrate.
  • FIG. 2A shows a state before insertion
  • FIG. 2B shows a state after insertion.
  • the press-fit terminal 1 is such that one end of the press-fit terminal 1 guides the press-fit terminal 1 inserted into the conductive through-hole 3 of the base plate 2. It is formed in a tapered shape as a guide part 11 for this purpose. The rear end side, which is the other end, is formed as a mounting portion 12 for mounting to another terminal (not shown) such as a board connector housing. Further, the press-fit terminal 1 is formed as a connecting portion 13 between the guide portion 11 and the mounting portion 12 that is in contact with and electrically connected to the inside of the conductive through hole 3 of the substrate.
  • the press-fit terminal 1 of the embodiment shown in FIG. 1 and FIG. 2 is formed by pressing a metal wire excellent in conductivity such as a copper alloy, and has a constant thickness.
  • a metal wire excellent in conductivity such as a copper alloy
  • the surface of the portion of the connecting portion 13 of the press-fit terminal 1 that contacts the through hole 3 is plated with tin or the like.
  • the needle eye type press-fit terminal 1 includes a slit portion 14 having a width that penetrates the front and back of the press-fit terminal 1 and the slit portion. It is composed of two beam members 15 and 16 whose cross-sectional shapes facing each other across 14 are substantially square. Further, as shown in FIGS. 2A and 2B, the width of the connecting portion 13 is formed larger than the diameter of the through hole 3.
  • FIG. 1 (c) is a cross-sectional view of the connecting portion center 17 that is the central position in the axial direction of the connecting portion 13 of the press-fit terminal 1 shown in FIG. 1 (a).
  • the width of the connecting portion 13 is formed so that the width W1 of the connecting portion center 17 is the maximum width and gradually decreases toward the front end side and the rear end side. W2 and the width W3 on the rear end side are formed narrower than the width W1 at the center of the connection portion.
  • the connecting portion center 17 is the portion where the width of the connecting portion 13 is maximum as shown in FIG. 2 (a), or the middle of the maximum portion.
  • the insertion force to the through hole 3 is reduced, the damage to the through hole 3 during insertion is reduced, and the holding force after insertion is increased.
  • the optimum shape was studied.
  • the horizontal axis represents the amount of press-fit terminal insertion in terms of shoulder height
  • the vertical axis represents the insertion force.
  • the maximum value (peak) of the insertion force shown in the graph of Fig. 4 (a) must be made as small as possible. is necessary.
  • the holding force is related to the final value of the insertion force shown in the graph of the figure, and the holding force improves as the final value of the insertion force is increased.
  • the thickness of the beam members 15 and 16 of the connection portion 13 is closer to the thickness T1 of the connection portion center 17 than the thickness T1 of the connection portion.
  • the thickness T2 and the thickness T3 on the rear end side are thin.
  • the thickness T2 on the front end side and the thickness T3 on the rear end side may be the same or different.
  • connection portion 13 of the press-fit terminal 1 of the above embodiment the shape of the beam member 16 facing the beam member 15 and the slit portion 14 is symmetrical with a horizontal plane passing through the center in the width direction as a symmetry plane. It is formed into a shape.
  • the width direction of the press-fit terminal 1 is the vertical direction in Fig. 1 (a).
  • the shape of the slit portion 14 in the width direction can be formed in an appropriate shape according to the outer shape of the connecting portion 13, the width of the connecting portion 13, and the thickness of the beams 15 and 16. wear.
  • the axial length of the slit portion 14 is the length L1 from the connection portion center 17 to the slit portion tip 18 side, and from the connection portion center 17 to the rear of the slit portion.
  • the length L2 to the end 19 is short. That is, the center position of the slit portion 14 in the length direction is located on the tip side of the position of the connection portion center 17 that is the maximum width of the press-fit terminal 1.
  • the ratio of the slit portion 14 is increased at the tip end side of the press-fit terminal 1 in this way, the front portion of the connecting portion 13 is more easily deformed than the connecting portion center 17, so The insertion force can be reduced. Further, since the ratio of the slit portion 14 is smaller in the rear of the connection portion 13 than the connection portion center 17, the final value of the insertion force is not reduced so much. For this reason, the holding force after insertion into the through hole is increased.
  • Example 1 and Comparative Examples 1 to 6 an evaluation test of insertion force, holding force and through-hole damage (TH damage) was performed using press-fit terminals of various shapes shown in FIGS. 3 (a) to (g). It was.
  • Figures 4 (a) to (g) show the graphs of the insertion force measurement results
  • Figures 5 (a) to (g) show the Pd value graphs that serve as indicators of through-hole damage.
  • Table 1 shows the determination results.
  • the results in Fig. 4 (a) to (g) and Fig. 5 (a) to (g) correspond to the press-fit terminals in Fig. 3 (a) to (g), respectively.
  • the force that only Example 1 satisfied all the inputs, holding force, and through-hole damage (TH damage) Comparative Examples 1 to 5 did not satisfy all the evaluations.
  • the thickness of the beam member is thinner than the thickness W1 of the connection center 17 and the thickness W2 and W3 on the front and rear ends of the connection.
  • Slit 14 The length L2 from the connection portion center 17 to the rear end side 19 is made shorter than the length LI from the connection portion center 17 to the front end side 18.
  • the length L1 of the slit portion 14 of Example 1 is shortened and changed to the same length as the length L2, and other than that, it is a press-fit terminal configured in the same way as Example 1 (see Fig. 3 (b)). is there.
  • Fig. 4 (b) and Fig. 5 (b) when the ratio of the slit portion in front of the connection portion is reduced, the initial ⁇ input at the insertion of the through hole suddenly rises, so that the through hole damage is increased. Shimashita.
  • the length L2 of the slit portion 14 of Example 1 is lengthened to the rear side and changed to the same length as the length L1, and the rest is the same as in Example 1 (Fig. 3). (See (c)). As shown in Fig. 4 (c) and Fig. 5 (c), the insertion force is further reduced compared to the comparative example 1 of the embodiment. The holding force was greatly reduced due to the large rear slit.
  • Example 1 and slit part 14 have the same length (total length in the axial direction: LI + L2), but the length L2 is changed to be longer than the length L1, and the rest is the same as in Example 1.
  • This is a press-fit terminal (see Fig. 3 (d)).
  • Fig. 4 (d) and Fig. 5 (d) the insertion force is almost the same as in Example 1, but the holding force is increased by the fact that the slit part behind the connection center 17 becomes larger.
  • Comparative Example 1 (Slit part length L1 in Example 1 is shortened to be the same as length L2). This is a press-fit terminal (see Fig. 3 (e)) that is configured in the same way as in Comparative Example 1 except that the thickness T2 on the tip end side of the connecting portion is larger than T1. As shown in Fig. 4 (e) and Fig. 5 (e), the contact angle with respect to the through hole was reduced, so the through hole damage was improved compared to Comparative Example 1, but the strength of the beam on the tip side was improved. The insertion force is large because it has become difficult to elastically deform. It is had. However, even if the insertion force was increased, the effect of the slit behind the connection center increased, and the holding force did not improve much.
  • Example 1 Change the thickness of the beam in Example 1 so that the thickness Tl at the center of the connection part, the thickness ⁇ 2 at the front end side, and the thickness ⁇ 3 at the rear end side are the same, and the lengths L1 and L2 of the slit part are changed.
  • a press-fit terminal (see FIG. 3 (f)) having the same length and having the entire slit portion shorter than that of Example 1 and having the same configuration as that of Example 1 was used.
  • FIGS. 4 (f) and 5 (f) an evaluation test was conducted in the same manner as in Example 1. The insertion force increased and the holding force decreased. Also, through-hole damage worsened. This is thought to be because the thickness of the beam on the tip side has increased.
  • the thickness T1 of the beam at the center of the connection part in Example 1 is further increased, and the length L1 on the front end side from the connection part center of the slit part in Example 1 is shortened to be the same length as the length L2.
  • This is a press-fit terminal (see Fig. 3 (g)) that is formed in the same manner as in Example 1 except that the overall length is short.
  • Fig. 4 (g) and Fig. 5 (g) the force that increases the holding force due to the smaller slit 14 and the thicker beam ⁇
  • the input increases and the through-hole damage is also bad. I'm stuck.
  • FIG. 6 is an explanatory diagram showing the force applied when the press-fit terminal is inserted into the through hole of the board.
  • the press-fit terminal 1 when the press-fit terminal 1 is inserted into the through-hole 3 of the substrate 2, when a certain amount of the press-fit terminal 1 is inserted, the press-fit terminal 1 is located at the periphery of the through-hole 3. Contact. Here, a load is applied to the press-fit terminal 1 and the through-hole periphery 3 a of the substrate 2, and the press-fit terminal 1 is press-fitted into the through-hole 3.
  • the substrate 2 has various conductive paths formed on the surface thereof, and a large number of through holes 3 are opened.
  • the shape of the press-fit terminal 1 is an approximate shape.
  • the force applied to the peripheral edge 3a of the through hole is the press fitting of the press fit terminal 1.
  • This is the resultant force Fd between the frictional force ⁇ ⁇ ⁇ from the vertical connection 13 and the vertical resistance ⁇ .
  • Fd the resultant force between the frictional force ⁇ ⁇ ⁇ from the vertical connection 13 and the vertical resistance ⁇ .
  • the through hole 3 is deformed and the through hole 3 is cut off.
  • contact oil is time consuming and expensive. If Fd is made small, it is possible to prevent tearing without applying contact oil.
  • the pressure Pd involved in the plating can be determined by the following means. From the force relationship shown in Fig. 6, the following equations (3) and (4) are derived.
  • N-sin Q Pi + ⁇ N-cos ⁇ (3)
  • the vertical resistance N can be obtained.
  • Fd can be calculated from the above equation (2) using the vertical resistance N.
  • the pressure Pd applied to the through hole contact can be obtained by dividing Fd by the contact area S from Eq. (1).
  • a press-fit terminal was inserted into the through hole, and the wrinkle input Fi, contact load Pi, contact angle ⁇ , contact area S, etc. were measured with respect to the insertion amount.
  • Figures 7 to 10 show the graphs of the above measurement results. In this case, press-fit terminals were inserted without applying contact oil.
  • FIG. 7 is a graph showing the relationship between the insertion amount and the insertion force Fi, where the horizontal axis is the insertion amount (mm), and the vertical axis is the heel input Fi (N).
  • the amount of insertion was Omm when the connecting part 13 of the press-fit terminal 1 was in contact with the periphery of the opening of the through-hole 3.
  • the insertion force gradually increases.
  • the insertion force reaches its maximum value and then decreases and becomes constant. Even if the insertion amount is increased, the insertion force is maintained.
  • FIG. 8 is a graph showing the relationship between the insertion amount and the contact load Pi, where the horizontal axis is the insertion amount (mm) and the vertical axis is the contact load Pi (N). As shown in Fig. 8, the contact load Pi increases as the press-fit terminal is inserted, and the contact load Pi becomes maximum at the insertion amount where the insertion force is maximum, and even if the insertion amount increases. The contact load Pi is maintained.
  • FIG. 9 is a graph showing the relationship between the insertion amount and the contact angle ⁇ , where the horizontal axis is the insertion amount (mm) and the vertical axis is the contact angle ⁇ (deg).
  • the contact angle ⁇ depends on the shape on the insertion side of the press-fit terminal.
  • Figure 9 shows the change in the contact angle ⁇ for an example of a one-dollar eye press-fit terminal. Is.
  • FIG. 10 is a graph showing the relationship between the insertion amount and the contact area S, where the horizontal axis is the insertion amount (mm), and the vertical axis is the contact area S (mm 2 ).
  • Figure 10 shows an example of the contact area S of a one-dollar eye type press-fit terminal. The contact area can be obtained by measuring the cross-sectional force corresponding to the amount of each press-fit terminal inserted.
  • the vertical resistance N was obtained from the above equations (3) and (4). Furthermore, from the friction coefficient data, contact area S data, etc., the pressure Pd involved in the through hole at each moment of insertion amount is obtained by calculation, and a graph of the relationship between this pressure Pd and insertion amount is shown in Fig. 11. Indicated.
  • the coefficient of friction is specific to the material and can be measured by a known method according to the material.
  • the horizontal axis is the amount of insertion (mm), and the vertical axis is the pressure Pd (MPa).
  • the pressure Pd increases as the insertion amount increases, then decreases after reaching the maximum value. This is the maximum value of the maximum force Pd in this graph.
  • the press-fit terminal of the present invention can be used as a connection terminal for various control boards. However, when used for connecting electric wiring boards in electrical wiring of automobiles and the like, it is most suitable as a connection terminal having high reliability even under severe conditions such as high temperature and high vibration when mounted on a vehicle.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A needle array type press fit terminal having a tapered guide portion provided on the tip side for guiding to the through hole of a substrate, and a fixing portion provided on the end side for connecting with an other terminal, wherein a joint being connected electrically with the through hole is provided between the guide portion and the fixing portion, the joint consists of a slit potion having a width penetrating between the surface and the backside and two beam members opposing across the slit portion, and the width of the joint decreases gradually toward the tip side and the end side from the maximum width at the center of the joint as the central position of the joint in the axial direction. The beam member is formed thinner on the tip side and the end side of the joint than at the center of the joint, and the length of the slit is such that the length from the center of joint to the tip side is longer than the length from the center of joint to the end side.

Description

明 細 書  Specification
プレスフィット端子  Press-fit terminal
技術分野  Technical field
[0001] 本発明は、電子機器に組み込まれる基板の導電性を有するスルーホールに圧入 状態で挿入されて、該スルーホールで電気的に接続する接続部を有するプレスフィ ット端子に関し、特に自動車、産業機器等の高温、高湿といった過酷な環境下で使 用される制御装置などで最適に使用されるプレスフィット端子に関するものである。 背景技術  TECHNICAL FIELD [0001] The present invention relates to a press-fit terminal having a connection portion that is inserted in a press-fit state into a conductive through-hole of a substrate incorporated in an electronic device and is electrically connected to the through-hole. The present invention relates to press-fit terminals that are optimally used in control devices used in harsh environments such as high temperatures and high humidity in industrial equipment. Background art
[0002] 従来、プリント回路基板などの基板と端子を固定する方法として、基板に設けた導 電性スルーホールにプレスフィット端子と呼ばれる端子を挿入し、半田付けを行わず に機械的にこの端子を固定する方法が知られている。  Conventionally, as a method of fixing a board such as a printed circuit board and a terminal, a terminal called a press-fit terminal is inserted into a conductive through hole provided on the board, and this terminal is mechanically connected without soldering. There is a known method of fixing.
[0003] プレスフィット端子は、基板のスルーホールに挿入される案内部と、基板用コネクタ などに装着される取付部と、これら案内部と取付部との間に配置されてスルーホール 径よりも大きな幅に形成されて ヽて、スルーホールに圧入状態で挿入されて電気的 に接続される接続部とを有して 、る。  [0003] A press-fit terminal is arranged between a guide part inserted into a through hole of a board, a mounting part attached to a board connector, and the like, and between the guide part and the mounting part. It is formed to have a large width and has a connection portion that is inserted into the through hole in a press-fitted state and electrically connected.
[0004] プレスフィット端子は、案内部より基板のスルーホールに挿入し、そのスルーホール 径よりも大きな幅の接続部をスルーホール内に圧入する事で接触荷重が発生し、機 械的な保持力が増大し、安定した電気的接続が得られる。  [0004] The press-fit terminal is inserted into the through hole of the board from the guide part, and a contact load larger than the diameter of the through hole is press-fitted into the through hole to generate a contact load and mechanically hold it. The force increases and a stable electrical connection is obtained.
[0005] また基板は、一般にガラス繊維を縦横に組み合わせたエポキシ榭脂を含浸させた シートを多数積層し圧着して形成され、表面に導電部材による配線回路パターンと、 該基板の表裏を貫通するスルーホールとが設けられて 、る。基板のスルーホールに は、該スルーホールの内周面の壁から基板表面のスルーホール開口周縁にかけて、 銅めつき等のめっきが施されて 、て、スルーホールは導電性を有しており基板の配 線回路パターンに電気的に接続されている。  [0005] In addition, the substrate is generally formed by laminating and pressing a plurality of sheets impregnated with epoxy resin in which glass fibers are vertically and horizontally combined, and penetrates the surface of the circuit board and the wiring circuit pattern of the conductive member on the surface. A through hole is provided. The through hole of the substrate is plated with copper plating or the like from the inner peripheral wall of the through hole to the periphery of the through hole opening on the substrate surface, and the through hole has conductivity. It is electrically connected to the wiring circuit pattern.
[0006] 基板のスルーホールにプレスフィット端子を圧入すると、プレスフィット端子のプレス フィット接続部がスルーホールの開口周縁に最初に接触して荷重が加わり、プレスフ イット接続部は弹塑性変形してスルーホール内に圧入される。 [0007] 自動車等の振動の大きな制御機器等に用いられる基板は、電気的接続信頼性を 確保することや、プレスフィット端子の基板に対して固着力を十分確保する必要があ る。そこで高保持力を得るために、例えばプレスフィット接続部の幅をスルーホールの 径よりも更に大きく形成して、圧入シロを大きくしてなる高荷重タイプのプレスフィット 端子が公知である（例えば、特開 2004— 127610号公報参照)。 [0006] When a press-fit terminal is press-fitted into a through-hole of a board, the press-fit connection portion of the press-fit terminal first comes into contact with the periphery of the opening of the through hole, and a load is applied. Press fit into the hall. [0007] A board used for a control device having a large vibration such as an automobile needs to secure electrical connection reliability and a sufficient securing force to the board of a press-fit terminal. Therefore, in order to obtain a high holding force, for example, a high-load type press-fit terminal in which the width of the press-fit connection portion is formed to be larger than the diameter of the through hole and the press-fitting size is increased is known (for example, JP 2004-127610 A).
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0008] 基板のスルーホールに高荷重タイプのプレスフィット端子を圧入すると、プレスフィ ット端子圧入時の応力集中により、基板のスルーホール開口周縁のめっきが損傷し てめつき切れが発生し易くなる。またこの場合、基板のスルーホール開口部周辺の応 力が基板の面方向に作用すると、基板を構成する積層体の各含浸シートが剥がれて しまい、基板自体を損傷させる虞がある。  [0008] When a high-load type press-fit terminal is press-fitted into a through-hole of a board, the plating around the through-hole opening of the board is damaged due to stress concentration during press-fitting of the press-fitting terminal, and it is easy for cut-off to occur. . In this case, if the stress around the through-hole opening of the substrate acts in the surface direction of the substrate, the respective impregnated sheets of the laminate constituting the substrate are peeled off, which may damage the substrate itself.
[0009] 特に基板が、自動車の制御装置などのように、周囲の温度が高ぐ多湿であり、振 動が加わるような過酷な動作環境で使用される場合には、プレスフィット端子の圧入 時の基板自体に与えた損傷が、絶縁性等の基板特性を大きく低下させることが懸念 される。  [0009] Especially when the board is used in a severe operating environment where the ambient temperature is high and the vibration is applied, such as a control device of an automobile, the press-fit terminal is pressed. There is a concern that the damage to the substrate itself may greatly deteriorate the substrate characteristics such as insulation.
[0010] 本発明が解決しょうとする課題は、プレスフィット端子のスルーホールに対する保持 力を高くすると共に、スルーホールにプレスフィット端子を圧入する際の挿入力を小さ くし、基板に対するダメージを低減することが可能なプレスフィット端子を提供すること にある。  [0010] The problem to be solved by the present invention is to increase the holding force of the press-fit terminal with respect to the through hole and reduce the insertion force when press-fitting the press-fit terminal into the through hole, thereby reducing damage to the substrate. It is to provide a press-fit terminal that can be used.
課題を解決するための手段  Means for solving the problem
[0011] 本発明は、基板のスルーホールに案内するための先細状に形成された案内部が 先端側に設けられ、後端側に他の端子と接続するための取付部が設けられ、前記案 内部と取付部の間にスルーホールと電気的に接続するための接続部が設けられ、基 板のスルーホールに圧入状態で挿入されるプレスフィット端子にぉ 、て、接続部は表 裏を貫通する幅のあるスリット部と該スリット部を挟んで対向する二本の梁部材とから 構成され、接続部の幅が、該接続部の軸方向の中央位置となる接続部中心の幅を 最大幅として先端側及び後端側に向力つて漸次細くなるように形成された-一ドルァ ィ型のプレスフィット端子であって、梁部材の太さが、接続部中心の太さに対して接 続部先端側及び接続部後端側の太さが細く形成され、スリット部の長さが、接続部中 心から先端側までの長さに対して接続部中心から後端側までの長さが短く形成され ていることを特徴とするプレスフィット端子、を要旨とするものである。 [0011] In the present invention, a tapered guide portion for guiding to the through hole of the substrate is provided on the front end side, and an attachment portion for connecting to another terminal is provided on the rear end side, The connection part for electrical connection with the through hole is provided between the inside and the mounting part, and the connection part is placed on the front and back side of the press fit terminal that is inserted into the through hole of the board in a press-fitted state. It consists of a slit part with a width that penetrates and two beam members facing each other across the slit part, and the width of the connection part is the maximum at the center of the connection part, which is the central position in the axial direction of the connection part. As a result, it was formed to gradually narrow toward the front end and rear end. This type of press-fit terminal has a beam member with a thickness that is thinner at the front end of the connection and at the rear end of the connection than the center of the connection. However, the gist of the press-fit terminal is characterized in that the length from the center of the connection portion to the rear end side is shorter than the length from the center of the connection portion to the front end side.
発明の効果  The invention's effect
[0012] 上記本発明に係るプレスフィット端子によれば、基板のスルーホールに対する保持 力を高くして高荷重タイプの端子とすることができると共に、基板に圧入する際のプレ スフイット端子の挿入力が小さくなつて、基板に対するダメージを低減することができ る。またプレスフィット端子の挿入力が小さくなると、該プレスフィット端子の挿入に使 用する挿入装置に対する負荷を小さくでき、挿入作業が容易になり作業性が向上す る。  [0012] According to the press-fit terminal according to the present invention, the holding force with respect to the through-hole of the substrate can be increased to be a high-load type terminal, and the insertion force of the press-fit terminal when being press-fitted into the substrate By reducing the thickness, damage to the substrate can be reduced. Further, when the insertion force of the press-fit terminal is reduced, the load on the insertion device used for inserting the press-fit terminal can be reduced, and the insertion work is facilitated and the workability is improved.
図面の簡単な説明  Brief Description of Drawings
[0013] [図 1] (a)は本発明プレスフィット端子の一例を示す正面図であり、（b)は (a)の A—A 線断面図であり、（c)は（a)の B— B線断面図である。  [0013] [Fig. 1] (a) is a front view showing an example of the press-fit terminal of the present invention, (b) is a cross-sectional view taken along line AA of (a), and (c) is a cross-sectional view of (a). It is a BB line sectional view.
[図 2]プレスフィット端子を基板に挿入する状態を示す説明図であり、 (a)は挿入前の 状態を示し、（b)は挿入後の状態を示す。  FIG. 2 is an explanatory view showing a state where a press-fit terminal is inserted into a substrate, where (a) shows a state before insertion, and (b) shows a state after insertion.
[図 3] (a)〜(g)は、実施例 1、比較例 1〜6で用いたプレスフィット端子を示す正面図 である。  FIG. 3 (a) to (g) are front views showing press-fit terminals used in Example 1 and Comparative Examples 1 to 6.
[図 4] (a)〜(g)は、実施例 比較例 1〜6の挿入力の試験結果を示すグラフである。  [FIG. 4] (a) to (g) are graphs showing the insertion force test results of Example Comparative Examples 1 to 6.
[図 5] (a)〜(g)は、実施例 1、比較例 1〜6の Pd値の試験結果を示すグラフである。  FIG. 5 (a) to (g) are graphs showing test results of Pd values of Example 1 and Comparative Examples 1 to 6.
[図 6]プレスフィット端子を基板のスルーホールに挿入する際に加わる力を示す説明 図である。  FIG. 6 is an explanatory diagram showing a force applied when a press-fit terminal is inserted into a through hole of a substrate.
[図 7]プレスフィット端子の挿入量と挿入力 Fiの関係を示すグラフである。  FIG. 7 is a graph showing the relationship between the amount of press-fit terminal insertion and the insertion force Fi.
[図 8]プレスフィット端子の挿入量と接触荷重 Piの関係を示すグラフである。  FIG. 8 is a graph showing the relationship between the press-fit terminal insertion amount and the contact load Pi.
[図 9]プレスフィット端子の挿入量と接触角 Θの関係を示すグラフである。  FIG. 9 is a graph showing the relationship between the amount of press-fit terminal insertion and the contact angle Θ.
[図 10]プレスフィット端子の挿入量と接触面積 Sの関係を示すグラフである。  FIG. 10 is a graph showing the relationship between the amount of press-fit terminal insertion and the contact area S.
[図 11]プレスフィット端子の挿入量とスルーホールに加わる圧力 Pdの関係を示すダラ フである。 発明を実施するための最良の形態 [Fig. 11] A diagram showing the relationship between the amount of press-fit terminal insertion and the pressure Pd applied to the through hole. BEST MODE FOR CARRYING OUT THE INVENTION
[0014] 以下、本発明の実施形態について図面を参照して詳細に説明する。図 1 (a)は本 発明プレスフィット端子の一例を示す正面図であり、 (b)は (a)の A— A線断面図であ り、 （c)は（a)の B— B線断面図である。図 2はプレスフィット端子を基板に挿入する状 態を示す説明図であり、（a)は挿入前の状態を示し、（b)は挿入後の状態を示す。  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Fig. 1 (a) is a front view showing an example of the press-fit terminal of the present invention, (b) is a cross-sectional view taken along line A-A of (a), and (c) is a line B-B of (a). It is sectional drawing. 2A and 2B are explanatory views showing a state in which the press-fit terminal is inserted into the substrate. FIG. 2A shows a state before insertion, and FIG. 2B shows a state after insertion.
[0015] 図 1及び図 2に示すように、プレスフィット端子 1は、一方の端部である先端側が、基 板 2の導電性を有するスルーホール 3に挿入される該プレスフィット端子 1を案内する ための案内部 11として先細状に形成されている。そして他方の端部である後端側が 、基板用コネクタハウジング等の他の端子（図示しない）に装着するための取付部 12 として形成されている。更にプレスフィット端子 1は、前記案内部 11と取付部 12の間 が、基板の導電性スルーホール 3の内部と接触して電気的に接続する接続部 13とし て形成されている。  As shown in FIGS. 1 and 2, the press-fit terminal 1 is such that one end of the press-fit terminal 1 guides the press-fit terminal 1 inserted into the conductive through-hole 3 of the base plate 2. It is formed in a tapered shape as a guide part 11 for this purpose. The rear end side, which is the other end, is formed as a mounting portion 12 for mounting to another terminal (not shown) such as a board connector housing. Further, the press-fit terminal 1 is formed as a connecting portion 13 between the guide portion 11 and the mounting portion 12 that is in contact with and electrically connected to the inside of the conductive through hole 3 of the substrate.
[0016] 図 1及び図 2に示す態様のプレスフィット端子 1は、銅合金等の導電性に優れた金 属線をプレスすることにより形成され、厚みは一定に形成されていている。また特に 図示しないが、プレスフィット端子 1の接続部 13のスルーホール 3と接触する部分の 表面には、錫めつき等のめっきが施されている。  [0016] The press-fit terminal 1 of the embodiment shown in FIG. 1 and FIG. 2 is formed by pressing a metal wire excellent in conductivity such as a copper alloy, and has a constant thickness. Although not shown in particular, the surface of the portion of the connecting portion 13 of the press-fit terminal 1 that contacts the through hole 3 is plated with tin or the like.
[0017] ニードルアイ型のプレスフィット端子 1は、接続部 13が、図 1 (a)、 (c)に示すように プレスフィット端子 1の表裏を貫通する幅のあるスリット部 14と該スリット部 14を挟んで 対向する断面形状が略方形の二本の梁部材 15、 16とから構成されている。また図 2 (a)、 （b)に示すように、接続部 13の幅はスルーホール 3の直径よりも大きく形成され ている。  [0017] As shown in FIGS. 1 (a) and 1 (c), the needle eye type press-fit terminal 1 includes a slit portion 14 having a width that penetrates the front and back of the press-fit terminal 1 and the slit portion. It is composed of two beam members 15 and 16 whose cross-sectional shapes facing each other across 14 are substantially square. Further, as shown in FIGS. 2A and 2B, the width of the connecting portion 13 is formed larger than the diameter of the through hole 3.
[0018] 図 1 (c)は、図 1 (a)に示すプレスフィット端子 1の接続部 13の軸方向の中央位置と なる接続部中心 17の断面図である。プレスフィット端子 1において、接続部 13の幅は 、接続部中心 17の幅 W1を最大幅として、先端側及び後端側に向かって漸次細くな るように形成されて ヽて、先端側の幅 W2及び後端側の幅 W3は接続部中心の幅 W1 よりも細く形成されている。なお上記接続部中心 17は、図 2 (a)に示すように接続部 1 3の幅が最大となる部分、もしくは最大となる部分の真中である。  FIG. 1 (c) is a cross-sectional view of the connecting portion center 17 that is the central position in the axial direction of the connecting portion 13 of the press-fit terminal 1 shown in FIG. 1 (a). In the press-fit terminal 1, the width of the connecting portion 13 is formed so that the width W1 of the connecting portion center 17 is the maximum width and gradually decreases toward the front end side and the rear end side. W2 and the width W3 on the rear end side are formed narrower than the width W1 at the center of the connection portion. The connecting portion center 17 is the portion where the width of the connecting portion 13 is maximum as shown in FIG. 2 (a), or the middle of the maximum portion.
[0019] ニードルアイ型のプレスフィット端子 1は、 2本の梁部材 15、 16がスリット部 14を挟 んで対向している接続部 13を有するので、接続部 13に外方（図中、上下方向）から の応力が加わると、梁部材 15、 16がパネ部材となってスリット部 14方向に橈んで弹 塑性変形する。プレスフィット端子 1は、図 2 (b)に示すように、スルーホール 3に圧入 する際に、接続部 13の梁部材 15、 16が弾塑性変形することで、挿入力が小さくなる と共に、スルーホール 3に挿入された後は、梁部材 15、 16が外側方向に広がろうと する弾性力により、スルーホール 3に対する保持力が得られる。 [0019] In the needle eye type press-fit terminal 1, two beam members 15 and 16 sandwich the slit portion 14. Therefore, when stress is applied to the connection part 13 from the outside (vertical direction in the figure), the beam members 15 and 16 become panel members and sag in the slit part 14 direction.す る Plastic deformation. As shown in Fig. 2 (b), when the press-fit terminal 1 is press-fitted into the through-hole 3, the beam members 15 and 16 of the connecting portion 13 are elasto-plastically deformed, so that the insertion force is reduced and the through-hole terminal 1 is reduced. After being inserted into the hole 3, the holding force for the through hole 3 is obtained by the elastic force of the beam members 15 and 16 trying to spread outward.
[0020] 本発明では、このような-一ドルアイ型のプレスフィット端子 1において、スルーホー ル 3に対する挿入力を小さくし、挿入の際のスルーホール 3に対するダメージを減らし 、挿入後の保持力を高くするために最適な形状を検討した。図 4 (a)のグラフは、横 軸にプレスフィット端子の挿入量をショルダー高さで表し、縦軸に挿入力を示すもの である。挿入力と保持力の特性を満足させるための要件として、まず、挿入力を小さく するためには、図 4 (a)のグラフに示す挿入力の最大値 (ピーク）を出来るだけ小さく することが必要である。更に、保持力は、同図のグラフに示す挿入力の最終値と関連 性があり、挿入力の最終値を高くすると保持力は向上する。  In the present invention, in such a one-dollar eye type press-fit terminal 1, the insertion force to the through hole 3 is reduced, the damage to the through hole 3 during insertion is reduced, and the holding force after insertion is increased. The optimum shape was studied. In the graph in Fig. 4 (a), the horizontal axis represents the amount of press-fit terminal insertion in terms of shoulder height, and the vertical axis represents the insertion force. As a requirement to satisfy the characteristics of the insertion force and holding force, first, in order to reduce the insertion force, the maximum value (peak) of the insertion force shown in the graph of Fig. 4 (a) must be made as small as possible. is necessary. Furthermore, the holding force is related to the final value of the insertion force shown in the graph of the figure, and the holding force improves as the final value of the insertion force is increased.
[0021] 次に上記観点に基づいて、スリット部 14を有する-一ドルアイ型のプレスフィット端 子の接続部 13の構成について検討した。その結果、スリット部 14の前後方向の位置 と、接続部の梁部材 15、 16の太さを、特定の構成とすることで、挿入力、保持力及び スルーホールに対するダメージのいずれの特性も満足できるプレスフィット端子が得 られることを見い出した。以下、これらの構成について説明する。  Next, based on the above viewpoint, the configuration of the connecting portion 13 of the press-fit terminal having the slit portion 14 and the one-dollar eye type was examined. As a result, the insertion / retention force and the damage to the through-hole are all satisfied by adopting a specific configuration for the longitudinal position of the slit 14 and the thickness of the beam members 15 and 16 at the connection. We found that a press-fit terminal that can be used is obtained. Hereinafter, these configurations will be described.
[0022] 図 1 (a)に示すように、プレスフィット端子 1において、接続部 13の梁部材 15、 16の 太さは、接続部中心 17の太さ T1に対して、接続部先端側の太さ T2及び後端側の太 さ T3の太さが細く形成されている。先端側の太さ T2と後端側の太さ T3は、同じであ つても、異なっていてもいずれでも良い。  [0022] As shown in Fig. 1 (a), in the press-fit terminal 1, the thickness of the beam members 15 and 16 of the connection portion 13 is closer to the thickness T1 of the connection portion center 17 than the thickness T1 of the connection portion. The thickness T2 and the thickness T3 on the rear end side are thin. The thickness T2 on the front end side and the thickness T3 on the rear end side may be the same or different.
[0023] なお上記実施態様のプレスフィット端子 1の接続部 13において、梁部材 15とスリット 部 14を挟んで対向する梁部材 16の形状は、幅方向の中心を通る水平面を対称面と する対称形状に形成されている。プレスフィット端子 1の幅方向とは、図 1 (a)の中で は上下方向のことである。またスリット部 14の幅方向の形状は、接続部 13の外形形 状、接続部 13の幅、及び梁 15、 16の太さに応じて、適宜の形状に形成することがで きる。 [0023] In the connection portion 13 of the press-fit terminal 1 of the above embodiment, the shape of the beam member 16 facing the beam member 15 and the slit portion 14 is symmetrical with a horizontal plane passing through the center in the width direction as a symmetry plane. It is formed into a shape. The width direction of the press-fit terminal 1 is the vertical direction in Fig. 1 (a). In addition, the shape of the slit portion 14 in the width direction can be formed in an appropriate shape according to the outer shape of the connecting portion 13, the width of the connecting portion 13, and the thickness of the beams 15 and 16. wear.
[0024] 図 1 (b)に示すように、スリット部 14の軸方向の長さは、接続部中心 17からスリット部 先端 18側までの長さ L1に対して接続部中心 17からスリット部後端 19までの長さ L2 が短く形成されている。すなわちスリット部 14の長さ方向の中心位置は、プレスフイツ ト端子 1の最大幅となる接続部中心 17の位置よりも先端側に位置する。  [0024] As shown in Fig. 1 (b), the axial length of the slit portion 14 is the length L1 from the connection portion center 17 to the slit portion tip 18 side, and from the connection portion center 17 to the rear of the slit portion. The length L2 to the end 19 is short. That is, the center position of the slit portion 14 in the length direction is located on the tip side of the position of the connection portion center 17 that is the maximum width of the press-fit terminal 1.
[0025] このようにプレスフィット端子 1の先端側にスリット部 14の割合が多くなるように構成 したことにより、接続部 13の接続部中心 17よりも前方は変形し易いから、スルーホー ル 3に対する挿入力を小さくすることができる。また、接続部 13の接続部中心 17より も後方はスリット部 14の割合が小さいので、挿入力の最終値をさほど低下させない。 その為、スルーホールへの挿入後の保持力が高くなる。  [0025] Since the ratio of the slit portion 14 is increased at the tip end side of the press-fit terminal 1 in this way, the front portion of the connecting portion 13 is more easily deformed than the connecting portion center 17, so The insertion force can be reduced. Further, since the ratio of the slit portion 14 is smaller in the rear of the connection portion 13 than the connection portion center 17, the final value of the insertion force is not reduced so much. For this reason, the holding force after insertion into the through hole is increased.
実施例  Example
[0026] 以下、本発明の実施例及び比較例を示し、本発明を更に詳細に説明する。実施例 1、比較例 1〜6は、図 3 (a)〜(g)に示す各種形状のプレスフィット端子を用いて、挿 入力、保持力及びスルーホールダメージ (THダメージ）の評価試験を行った。挿入 力の測定結果のグラフを図 4 (a)〜 (g)に示し、スルーホールダメージの指標となる P d値のグラフを図 5 (a)〜 (g)に示し、これらのグラフより得た判定結果を表 1に示す。 図 4 (a)〜 (g)及び図 5 (a)〜 (g)の結果は、図 3 (a)〜 (g)のプレスフィット端子に、そ れぞれ対応するものである。実施例 1のみが揷入力、保持力及びスルーホールダメ ージ (THダメージ）のすベて満足するものであった力 比較例 1〜5はすべての評価 を満足するものはな力つた。  [0026] Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples of the present invention. In Example 1 and Comparative Examples 1 to 6, an evaluation test of insertion force, holding force and through-hole damage (TH damage) was performed using press-fit terminals of various shapes shown in FIGS. 3 (a) to (g). It was. Figures 4 (a) to (g) show the graphs of the insertion force measurement results, and Figures 5 (a) to (g) show the Pd value graphs that serve as indicators of through-hole damage. Table 1 shows the determination results. The results in Fig. 4 (a) to (g) and Fig. 5 (a) to (g) correspond to the press-fit terminals in Fig. 3 (a) to (g), respectively. The force that only Example 1 satisfied all the inputs, holding force, and through-hole damage (TH damage) Comparative Examples 1 to 5 did not satisfy all the evaluations.
[0027] [表 1] [0027] [Table 1]
プレスフィット端子の形状 試験結果 図 3 Press-fit terminal shape Test results Figure 3
梁部材の太さ スリ ッ トの長さ 揷入力 保持力 Τ Η ダ メージ 実施例 1 a T 1 > T 2、 T 3 L 1 > L 2 〇 〇 〇 比較例 1 b T 1 >T 2、 Τ 3 L 1 = L 2 〇 〇 X 比較例 2 c Τ 1 > Τ 2、 Τ 3 L 1 = L 2 〇 X 〇  Beam member thickness Slit length 揷 Input Holding force Τ Η Damage Example 1 a T 1> T 2, T 3 L 1> L 2 ○ ○ ○ Comparative example 1 b T 1> T 2, T 3 L 1 = L 2 ○ ○ X Comparative Example 2 c Τ 1> Τ 2, Τ 3 L 1 = L 2 〇 X ○
(前後に長い）  (Long back and forth)
比較例 3 d Τ 1 > Τ 2、 Τ 3 L 2 > L 1 〇 X 〇 比較例 4 e Τ 2 >Τ 1 =Τ 3 L 1 = L 2 X 〇 〇 比較例 5 f Τ 1 =Τ 2=Τ 3 L 1 = L 2 〇 〇 X  Comparative Example 3 d Τ 1> Τ 2, Τ 3 L 2> L 1 ○ X ○ Comparative Example 4 e Τ 2> Τ 1 = Τ 3 L 1 = L 2 X ○ ○ Comparative Example 5 f Τ 1 = Τ 2 = Τ 3 L 1 = L 2 ○ ○ X
(全長を小さく）  (Reduce the total length)
比較例 6 g Τ 1 >>Τ 2、 Τ 3 L 1 = L 2 X 〇 X  Comparative Example 6 g Τ 1 >> Τ 2, Τ 3 L 1 = L 2 X 〇 X
(全長を小さく）  (Reduce the total length)
[0028] なお表 1にお 、て、試験結果の欄の各項目の評価方法は下記の通りである。 [0028] In Table 1, the evaluation method for each item in the test result column is as follows.
[挿入力]：図 4 (a)〜 (g)に示す挿入力の測定結果より、挿入力のピーク値が 50 (N) 以下の場合は〇として、 50を越えた場合は Xとした。  [Insertion force]: Based on the insertion force measurement results shown in Figs. 4 (a) to (g), the insertion force peak value was 50 (N) or less.
[保持力]：図 4 (a)〜 (g)に示す挿入力の測定結果より、挿入力の最終値が 20 (N) を越えた場合は〇として、 20 (N)以下の場合は Xとした。  [Holding force]: Based on the insertion force measurement results shown in Figs. 4 (a) to (g), the final value of the insertion force exceeds 20 (N). It was.
[THダメージ」：図 5 (a)〜（g)に示すスルーホールに加わる圧力 Pdの測定結果より、 最大値が 500 (MPa)以下である場合を〇として、 500 (Mpa)を越える場合は Xとし た。  [TH damage]: From the measurement result of the pressure Pd applied to the through hole shown in Fig. 5 (a) to (g), when the maximum value is 500 (MPa) or less X.
[0029] なお図 4 (a)〜（g)、図 5 (a)〜（g)のグラフは、横軸をショルダー高さとした力 これ は図 2(b)に示すプレスフィット端子 1の取付部 12の外側位置に設けられている治具 押圧用の肩部 12aから基板 2のスルーホール挿入側の表面 2aまでの距離 SHである  [0029] The graphs in Figs. 4 (a) to (g) and Figs. 5 (a) to (g) show the force with the horizontal axis as the shoulder height. This is the installation of the press-fit terminal 1 shown in Fig. 2 (b). The distance SH from the shoulder 12a for pressing the jig provided outside the portion 12 to the surface 2a on the through hole insertion side of the substrate 2
[0030] 以下、実施例及び比較例で用いたプレスフィットの形状と試験結果について説明 する。 [0030] The shape of the press fit and the test results used in the examples and comparative examples will be described below.
実施例 1  Example 1
図 3 (a)に示す形状のプレスフィット端子は、梁部材の太さが、接続部中心 17の太 さ W1に対して接続部先端側及び後端側の太さ W2、 W3を細く形成し、スリット部 14 の長さが、接続部中心 17から先端側 18までの長さ LIに対して接続部中心 17から後 端側 19までの長さ L2を短く形成した。実施例 1のプレスフィット端子のみが、挿入力 、保持力及びスルーホールダメージの!/、ずれも判定結果が合格であった。 In the press-fit terminal with the shape shown in Fig. 3 (a), the thickness of the beam member is thinner than the thickness W1 of the connection center 17 and the thickness W2 and W3 on the front and rear ends of the connection. , Slit 14 The length L2 from the connection portion center 17 to the rear end side 19 is made shorter than the length LI from the connection portion center 17 to the front end side 18. Only the press-fit terminal of Example 1 passed the judgment results of insertion force, holding force, and through hole damage!
[0031] 比較例 1 [0031] Comparative Example 1
実施例 1のスリット部 14の長さ L1を短くして、長さ L2と同じ長さに変更し、それ以外 は実施例 1と同様に構成したプレスフィット端子（図 3 (b)参照)である。図 4 (b)、図 5 ( b)に示すように、接続部前方のスリット部の割合が小さくなつて、スルーホール挿入 当初の揷入力が急激に立ち上がる為に、スルーホールダメージが大きくなつてしまつ た。  The length L1 of the slit portion 14 of Example 1 is shortened and changed to the same length as the length L2, and other than that, it is a press-fit terminal configured in the same way as Example 1 (see Fig. 3 (b)). is there. As shown in Fig. 4 (b) and Fig. 5 (b), when the ratio of the slit portion in front of the connection portion is reduced, the initial 揷 input at the insertion of the through hole suddenly rises, so that the through hole damage is increased. Shimashita.
[0032] 比較例 2  [0032] Comparative Example 2
実施例 1のスリット部 14の長さ L2を後側に長くして、長さ L1と同じ長さに変更し、そ れ以外は実施例 1と同様に構成してなるプレスフィット端子（図 3 (c)参照)である。図 4 (c) ,図 5 (c)に示すように、実施例 比較例 1と比較して挿入力は更に小さくなり、 比較例 1に対してスルーホールダメージが改良された力 接続部中心より後方のスリ ット部が大きくなつたことにより保持力が大きく低下してしまった。  The length L2 of the slit portion 14 of Example 1 is lengthened to the rear side and changed to the same length as the length L1, and the rest is the same as in Example 1 (Fig. 3). (See (c)). As shown in Fig. 4 (c) and Fig. 5 (c), the insertion force is further reduced compared to the comparative example 1 of the embodiment. The holding force was greatly reduced due to the large rear slit.
[0033] 比較例 3 [0033] Comparative Example 3
実施例 1とスリット部 14の長さ（軸方向の全長: LI +L2)を同じとしたが、長さ L2が 長さ L1よりも長くなるように変更し、それ以外は実施例 1と同様に構成してなるプレス フィット端子（図 3 (d)参照)である。図 4 (d)、図 5 (d)に示すように、実施例 1と比較し て挿入力はほぼ同じであるが、接続部中心 17より後方のスリット部が大きくなつたこと により、保持力の低下が大きくなつた。  Example 1 and slit part 14 have the same length (total length in the axial direction: LI + L2), but the length L2 is changed to be longer than the length L1, and the rest is the same as in Example 1. This is a press-fit terminal (see Fig. 3 (d)). As shown in Fig. 4 (d) and Fig. 5 (d), the insertion force is almost the same as in Example 1, but the holding force is increased by the fact that the slit part behind the connection center 17 becomes larger. The drop in
[0034] 比較例 4 [0034] Comparative Example 4
比較例 1 (実施例 1のスリット部の長さ L1を短くして、長さ L2と同じとした)の端子先 端側の外側の傾斜を緩くして、接続部中心 17の梁部材の太さ T1よりも接続部先端 側の太さ T2が太くなるように変更し、それ以外は比較例 1と同様に構成してなるプレ スフイット端子（図 3 (e)参照）である。図 4 (e)、図 5 (e)に示すように、スルーホールに 対する接触角が小さくなつたので、比較例 1と比べてスルーホールダメージは改良さ れたが、先端側の梁の強度が増して弾塑性変形しにくくなつたので、挿入力が大きく なってしまった。しかし挿入力が大きくなつても、接続部中心より後方のスリット部の影 響が大きくなつて、保持力はさほど向上しなかった。 Comparative Example 1 (Slit part length L1 in Example 1 is shortened to be the same as length L2). This is a press-fit terminal (see Fig. 3 (e)) that is configured in the same way as in Comparative Example 1 except that the thickness T2 on the tip end side of the connecting portion is larger than T1. As shown in Fig. 4 (e) and Fig. 5 (e), the contact angle with respect to the through hole was reduced, so the through hole damage was improved compared to Comparative Example 1, but the strength of the beam on the tip side was improved. The insertion force is large because it has become difficult to elastically deform. It is had. However, even if the insertion force was increased, the effect of the slit behind the connection center increased, and the holding force did not improve much.
[0035] 比較例 5  [0035] Comparative Example 5
実施例 1の梁の太さを、接続部中心の太さ Tl、先端側の太さ Τ2及び後端側の太さ Τ3が同じになるように変更し、スリット部の長さ L1と L2を同じ長さとし、スリット部の全 長が実施例 1よりも短くなるように形成し、それ以外は実施例 1と同様に構成してなる プレスフィット端子（図 3 (f)参照）を用いた。図 4 (f)、図 5 (f)に示すように、実施例 1と 同様に評価試験を行った。挿入力が大きくなり、保持力は低下した。またスルーホー ルダメージが悪くなつた。これは先端側の梁の太さが太くなつた為と考えられる。  Change the thickness of the beam in Example 1 so that the thickness Tl at the center of the connection part, the thickness Τ2 at the front end side, and the thickness Τ3 at the rear end side are the same, and the lengths L1 and L2 of the slit part are changed. A press-fit terminal (see FIG. 3 (f)) having the same length and having the entire slit portion shorter than that of Example 1 and having the same configuration as that of Example 1 was used. As shown in FIGS. 4 (f) and 5 (f), an evaluation test was conducted in the same manner as in Example 1. The insertion force increased and the holding force decreased. Also, through-hole damage worsened. This is thought to be because the thickness of the beam on the tip side has increased.
[0036] 比較例 6 [0036] Comparative Example 6
実施例 1の接続部中心の梁の太さ T1を更に太くし、実施例 1のスリット部の接続部 中心から前端側の長さ L1を短くして長さ L2と同じ長さとし、スリット部の全長を短く形 成し、それ以外は実施例 1と同様に構成してなるプレスフィット端子（図 3 (g)参照)で ある。図 4 (g)、図 5 (g)に示すように、スリット部 14が小さくなつて梁が太くなつたこと で保持力が大きくなつた力 揷入力が大きくなつてしまい、スルーホールダメージも悪 くなつてしまった。  The thickness T1 of the beam at the center of the connection part in Example 1 is further increased, and the length L1 on the front end side from the connection part center of the slit part in Example 1 is shortened to be the same length as the length L2. This is a press-fit terminal (see Fig. 3 (g)) that is formed in the same manner as in Example 1 except that the overall length is short. As shown in Fig. 4 (g) and Fig. 5 (g), the force that increases the holding force due to the smaller slit 14 and the thicker beam 揷 The input increases and the through-hole damage is also bad. I'm stuck.
[0037] 以下、スルーホールダメージの指標として用いた、図 5 (a)〜（g)に示す圧力 Pd値 について説明する。図 6は、プレスフィット端子を基板のスルーホールに挿入する際 に加わる力を示す説明図である。  [0037] The pressure Pd values shown in Figs. 5 (a) to (g), which are used as indicators of through-hole damage, will be described below. FIG. 6 is an explanatory diagram showing the force applied when the press-fit terminal is inserted into the through hole of the board.
[0038] 図 6に示すように、プレスフィット端子 1を基板 2のスルーホール 3に挿入する際、プ レスフィット端子 1を一定量挿入したところで、プレスフィット端子 1はスルーホール 3の 周縁部に接触する。ここカゝらプレスフィット端子 1及び基板 2のスルーホール周縁 3aに 負荷が加わり、プレスフィット端子 1はスルーホール 3の内部に圧入されることになる。 図 6では記載を省略したが、基板 2は、その表面に各種導電路が形成されているとと もに、多数のスルーホール 3が開口されている。このスルーホール 3の内周面及び開 口周縁には、銅めつき等によりめつきが形成され基板 2表面の導電路と接続されてい る。なお図 1では、プレスフィット端子 1の形状は概略の形状を示した。  [0038] As shown in FIG. 6, when the press-fit terminal 1 is inserted into the through-hole 3 of the substrate 2, when a certain amount of the press-fit terminal 1 is inserted, the press-fit terminal 1 is located at the periphery of the through-hole 3. Contact. Here, a load is applied to the press-fit terminal 1 and the through-hole periphery 3 a of the substrate 2, and the press-fit terminal 1 is press-fitted into the through-hole 3. Although not shown in FIG. 6, the substrate 2 has various conductive paths formed on the surface thereof, and a large number of through holes 3 are opened. On the inner peripheral surface and the periphery of the opening of the through hole 3, a stake is formed by copper staking or the like and is connected to a conductive path on the surface of the substrate 2. In FIG. 1, the shape of the press-fit terminal 1 is an approximate shape.
[0039] このときにスルーホールの周縁 3aに加わる力は、プレスフィット端子 1のプレスフイツ ト接続部 13からの摩擦力 μ Νと垂直抗カ Νとの合力 Fdとなる。この力 Fdによりスル 一ホール 3が変形して、スルーホール 3のめつき切れが発生する。例えばプレスフイツ ト端子にコンタクトオイルを塗布することで、摩擦係数 を低下させ、摩擦力 μ Νが低 減してスルーホールに対する負荷を小さくできるから、めっき切れを防止できる。しか し、コンタクトオイルの塗布は、手間が掛カりコスト高になってしまう。 Fdを小さくすれ ば、コンタクトオイルを塗布せずにメツキ切れを防止できる。 [0039] At this time, the force applied to the peripheral edge 3a of the through hole is the press fitting of the press fit terminal 1. This is the resultant force Fd between the frictional force μ か ら from the vertical connection 13 and the vertical resistance カ. Through this force Fd, the through hole 3 is deformed and the through hole 3 is cut off. For example, by applying contact oil to the press foot terminal, the friction coefficient is reduced, the frictional force μΝ is reduced, and the load on the through hole can be reduced, so that plating failure can be prevented. However, the application of contact oil is time consuming and expensive. If Fd is made small, it is possible to prevent tearing without applying contact oil.
[0040] 図 6に示すように、スルーホールの内壁 3bに加わる力をスルーホール 3側から見て 分解すると、 Piは接触荷重 (接触方向反力）、 は摩擦係数、 Nは垂直抗カ、 Θは接 触角、 Fiは揷入力となる。ここで、スルーホール内に加わる力の総和は Fdである。こ の力の総和 Fdは下記の（2)式で表される。  [0040] As shown in FIG. 6, when the force applied to the inner wall 3b of the through hole is disassembled when viewed from the through hole 3 side, Pi is the contact load (contact direction reaction force), is the friction coefficient, N is the vertical resistance, Θ is the contact angle and Fi is the input. Here, the total force applied in the through hole is Fd. The total force Fd is expressed by the following equation (2).
[0041] [数 1]  [0041] [Equation 1]
Pi Pi
Fd β ' ( 2 )  Fd β '(2)
s in Θ β cos θ  s in Θ β cos θ
[0042] 挿入の各瞬間における端子とスルーホールとの接触面積 (片側のみ）を Sとすると、 スルーホールにおいて、めっきに加わる圧力 Pdは、下記（1)式で表される。 [0042] If the contact area (only one side) between the terminal and the through hole at each moment of insertion is S, the pressure Pd applied to the plating in the through hole is expressed by the following equation (1).
Pd=Fd/S · · · ( 1)  Pd = Fd / S (1)
[0043] めっきにカ卩わる圧力 Pdは、下記の手段により求めることができる。図 6に示す力の 関係より、下記の（3)式、（4)式が導き出される。  [0043] The pressure Pd involved in the plating can be determined by the following means. From the force relationship shown in Fig. 6, the following equations (3) and (4) are derived.
N - sin Q = Pi+ ^ N - cos θ · · · (3) N-sin Q = Pi + ^ N-cos θ (3)
Figure imgf000012_0001
…（4)
Figure imgf000012_0001
…(Four)
図 1において分力 Νと分力/ ζ Νの合力が Fdであり、 Fdは下記の（5)式の通り表され る。  In Fig. 1, the resultant force of component force Ν and component force / ζ F is Fd, and Fd is expressed as the following equation (5).
[0044] [数 2]  [0044] [Equation 2]
Fd =Fd =
Figure imgf000012_0002
( 5 ) [0045] 垂直抗カ Nは上記（3)式より下記（6)式の通り表される c
Figure imgf000012_0002
( Five ) [0045] The vertical resistance N is expressed by the following equation (6) from the above equation (3) c
[0046] [数 3] [0046] [Equation 3]
• · · ( 6 ) • · · (6)
s in Θ — μ · cos θ  s in Θ — μ · cos θ
[0047] 上記 (6)式より、接触荷重 Pi、接触角 Θ、摩擦係数 が判明していれば、垂直抗カ Nが求められる。そして上記（2)式より垂直抗カ Nを用いて、 Fdを算出することができ る。さらに接触面積 Sを求めれば（1)式より Fdを接触面積 Sで除することで、スルーホ ールのめつきに加わる圧力 Pdが求められる。 [0047] If the contact load Pi, the contact angle Θ, and the friction coefficient are known from the above equation (6), the vertical resistance N can be obtained. Then, Fd can be calculated from the above equation (2) using the vertical resistance N. Further, if the contact area S is obtained, the pressure Pd applied to the through hole contact can be obtained by dividing Fd by the contact area S from Eq. (1).
[0048] プレスフィット端子をスルーホールに挿入し、挿入量に対する、揷入力 Fi、接触荷 重 Pi、接触角 Θ、接触面積 S等を測定した。図 7〜図 10に上記測定結果のグラフを 示す。なお、この場合、プレスフィット端子の挿入はコンタクトオイルを塗布せずに行 つた o  [0048] A press-fit terminal was inserted into the through hole, and the wrinkle input Fi, contact load Pi, contact angle Θ, contact area S, etc. were measured with respect to the insertion amount. Figures 7 to 10 show the graphs of the above measurement results. In this case, press-fit terminals were inserted without applying contact oil.
[0049] 図 7は挿入量と挿入力 Fiの関係を示すグラフであり、横軸が挿入量 (mm)であり、 縦軸が揷入力 Fi (N)である。挿入量は、プレスフィット端子 1の接続部 13がスルーホ ール 3の開口部周縁に接触したときを Ommとした。図 7に示すように、プレスフィット 端子 1をスルーホール 3に挿入するにつれて、挿入力は徐々に上昇する。挿入量が 一定のところで、挿入力は最大値となり、その後低下して一定となり、挿入量を増やし ても一定の挿入力が保持される。  FIG. 7 is a graph showing the relationship between the insertion amount and the insertion force Fi, where the horizontal axis is the insertion amount (mm), and the vertical axis is the heel input Fi (N). The amount of insertion was Omm when the connecting part 13 of the press-fit terminal 1 was in contact with the periphery of the opening of the through-hole 3. As shown in Fig. 7, as the press-fit terminal 1 is inserted into the through hole 3, the insertion force gradually increases. When the insertion amount is constant, the insertion force reaches its maximum value and then decreases and becomes constant. Even if the insertion amount is increased, the insertion force is maintained.
[0050] 図 8は挿入量と接触荷重 Piの関係を示すグラフであり、横軸が挿入量 (mm)であり 、縦軸が接触加重 Pi (N)である。図 8に示すように、プレスフィット端子を挿入するに つれて接触荷重 Piは上昇し、挿入力が最大となる挿入量のところで接触荷重 Piが最 大になり、挿入量が増カロしても接触荷重 Piは維持される。  FIG. 8 is a graph showing the relationship between the insertion amount and the contact load Pi, where the horizontal axis is the insertion amount (mm) and the vertical axis is the contact load Pi (N). As shown in Fig. 8, the contact load Pi increases as the press-fit terminal is inserted, and the contact load Pi becomes maximum at the insertion amount where the insertion force is maximum, and even if the insertion amount increases. The contact load Pi is maintained.
[0051] 図 9は挿入量と接触角 Θの関係を示すグラフであり、横軸が挿入量 (mm)であり、 縦軸が接触角 Θ (deg)である。接触角 Θはプレスフィット端子の挿入側の形状に依 存する。図 9は-一ドルアイ型のプレスフィット端子の一例の接触角 Θの変化を示す ものである。 FIG. 9 is a graph showing the relationship between the insertion amount and the contact angle Θ, where the horizontal axis is the insertion amount (mm) and the vertical axis is the contact angle Θ (deg). The contact angle Θ depends on the shape on the insertion side of the press-fit terminal. Figure 9 shows the change in the contact angle Θ for an example of a one-dollar eye press-fit terminal. Is.
[0052] 図 10は挿入量と接触面積 Sの関係を示すグラフであり、横軸が挿入量 (mm)であり 、縦軸が接触面積 S (mm2)である。図 10は-一ドルアイ型のプレスフィット端子の接 触面積 Sの一例を示すものである。接触面積はプレスフィット端子の各挿入量に応じ た断面力 実測することで得られる。 FIG. 10 is a graph showing the relationship between the insertion amount and the contact area S, where the horizontal axis is the insertion amount (mm), and the vertical axis is the contact area S (mm 2 ). Figure 10 shows an example of the contact area S of a one-dollar eye type press-fit terminal. The contact area can be obtained by measuring the cross-sectional force corresponding to the amount of each press-fit terminal inserted.
[0053] 図 8〜図 10に示す挿入力 Fi、接触荷重 Pi及び接触角 Θのデータを用い、前記（3) 式及び (4)式より垂直抗カ Nを求めた。さらに、摩擦係数 のデータ及び、接触面積 Sのデータ等から、挿入量の各瞬間におけるスルーホールにカ卩わる圧力 Pdを計算に より求め、この圧力 Pdと挿入量の関係のグラフを図 11に示した。なお、摩擦係数 は材質に固有のものであり、材質に応じて既知の手法によって測定することができる 。図 11において横軸が挿入量 (mm)であり、縦軸が圧力 Pd (MPa)である。図 11に 示すように、圧力 Pdは挿入量が増えると上昇し、最大値を経てその後低下する。この グラフの中の最大値力 Pdの最大値である。  [0053] Using the data of the insertion force Fi, the contact load Pi, and the contact angle Θ shown in FIGS. 8 to 10, the vertical resistance N was obtained from the above equations (3) and (4). Furthermore, from the friction coefficient data, contact area S data, etc., the pressure Pd involved in the through hole at each moment of insertion amount is obtained by calculation, and a graph of the relationship between this pressure Pd and insertion amount is shown in Fig. 11. Indicated. The coefficient of friction is specific to the material and can be measured by a known method according to the material. In FIG. 11, the horizontal axis is the amount of insertion (mm), and the vertical axis is the pressure Pd (MPa). As shown in Fig. 11, the pressure Pd increases as the insertion amount increases, then decreases after reaching the maximum value. This is the maximum value of the maximum force Pd in this graph.
[0054] 高荷重タイプの種々の形状のプレスフィット端子を作成して（実験 No. A〜D)、上 記の手法にて Pdの最大値を求めるとともに、該プレスフィット端子のスルーホールの めっき切れの発生の有無を調べた結果を表 2に示す。 Pdの最大値が 500MPa以下 の場合には、めっき切れが発生しない。  [0054] Various shapes of press-fit terminals of high load type (Experiment Nos. A to D) were prepared, and the maximum value of Pd was obtained by the above method and plating of the through-holes of the press-fit terminals was performed. Table 2 shows the results of examining the presence or absence of cutting. When the maximum value of Pd is 500MPa or less, plating breakage does not occur.
[0055] [表 2]  [0055] [Table 2]
Figure imgf000014_0001
Figure imgf000014_0001
[0056] このようにスルーホールに加わる圧力 Pdの最大値を 500MPa以下に形成すること で、プレスフィット端子 1をコンタクトオイルを使用せずに挿入した際に、その圧力によ り、スルーホールにメツキ切れが発生するのを確実に防止可能であり、スルーホール に対するダメージを小さくすることができる。 [0056] By forming the maximum value of the pressure Pd applied to the through hole to 500 MPa or less in this way, when the press-fit terminal 1 is inserted without using contact oil, the pressure is applied to the through hole. It is possible to reliably prevent the occurrence of chipping and reduce the damage to the through hole.
[0057] 本発明プレスフィット端子は、各種の制御基板の接続端子として用いることができる が、特に自動車等の電気配線における電線基板同士の接続に用いた場合、車載時 の高温、高振動等の過酷な条件においても高い信頼性を有する接続端子として最 適である。 The press-fit terminal of the present invention can be used as a connection terminal for various control boards. However, when used for connecting electric wiring boards in electrical wiring of automobiles and the like, it is most suitable as a connection terminal having high reliability even under severe conditions such as high temperature and high vibration when mounted on a vehicle.

Claims

請求の範囲 The scope of the claims
基板のスルーホールに案内するための先細状に形成された案内部が先端側に設 けられ、後端側に他の端子と接続するための取付部が設けられ、前記案内部と取付 部の間にスルーホールと電気的に接続するための接続部が設けられ、基板のスルー ホールに圧入状態で挿入されるプレスフィット端子において、  A tapered guide part for guiding to the through hole of the board is provided on the front end side, and an attachment part for connecting to other terminals is provided on the rear end side, and the guide part and the attachment part are connected to each other. In the press-fit terminal that is inserted in the press-fitted state into the through-hole of the board, with a connection part for electrical connection with the through-hole in between
接続部は表裏を貫通する幅のあるスリット部と該スリット部を挟んで対向する二本の梁 部材とから構成され、接続部の幅が、該接続部の軸方向の中央位置となる接続部中 心の幅を最大幅として先端側及び後端側に向かって漸次細くなるように形成された ニードルアイ型のプレスフィット端子であって、 The connecting portion is composed of a slit portion having a width passing through the front and back and two beam members facing each other with the slit portion interposed therebetween, and the connecting portion has a width that is the central position in the axial direction of the connecting portion. A needle-eye type press-fit terminal formed so as to gradually narrow toward the front end side and the rear end side with the center width as the maximum width,
梁部材の太さが、接続部中心の太さに対して接続部先端側及び接続部後端側の太 さが細く形成され、 The thickness of the beam member is formed so that the thickness at the front end side of the connection part and the rear end side of the connection part is thinner than the thickness at the center of the connection part,
スリット部の長さが、接続部中心から先端側までの長さに対して接続部中心から後端 側までの長さが短く形成されていることを特徴とするプレスフィット端子。 A press-fit terminal characterized in that the length of the slit portion is shorter than the length from the center of the connecting portion to the front end side, from the center of the connecting portion to the rear end side.
PCT/JP2006/318931 2006-09-25 2006-09-25 Press fit terminal WO2008038331A1 (en)

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WO2013094520A1 (en) * 2011-12-22 2013-06-27 日本圧着端子製造株式会社 Press-fit terminal, connector and press-fit connector continuous body employing same, and wound press-fit connector continuous body
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JP2015225701A (en) * 2014-05-26 2015-12-14 株式会社オートネットワーク技術研究所 Press fit terminal
WO2016067935A1 (en) * 2014-10-30 2016-05-06 株式会社オートネットワーク技術研究所 Terminal metal piece and connector
JP2016091990A (en) * 2014-10-30 2016-05-23 株式会社オートネットワーク技術研究所 Terminal fitting and connector
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US10014606B2 (en) 2015-04-14 2018-07-03 Autonetworks Technologies, Ltd. Press-fit terminal and board connector
CN109155474A (en) * 2016-05-19 2019-01-04 株式会社自动网络技术研究所 press-fit terminal connection structure
US10734740B2 (en) 2016-10-12 2020-08-04 Autonetworks Technologies, Ltd. Press-fit terminal
US10916869B2 (en) 2017-05-31 2021-02-09 Aisin Seiki Kabushiki Kaisha Press-fit terminal
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JPWO2013094520A1 (en) * 2011-12-22 2015-04-27 日本圧着端子製造株式会社 Press fit terminal, connector using the same, press fit terminal continuous body, press fit terminal continuous body wound body
WO2013094520A1 (en) * 2011-12-22 2013-06-27 日本圧着端子製造株式会社 Press-fit terminal, connector and press-fit connector continuous body employing same, and wound press-fit connector continuous body
US20150044918A1 (en) * 2013-08-09 2015-02-12 Dai-Ichi Seiko Co., Ltd. Press-fit type connector terminal and method of fabricating the same
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