JP2011216340A - Crimp terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crimp terminal capable of attaining downsizing while controlling deterioration of crimping strength.SOLUTION: The crimp terminal 1 is provided with a lower plate 20 having a first projection 23, an upper plate 30 having a second projection 33 which is opposed to the first projection 23, a first barrel 40 which is installed rising at the side part 21 of the lower plate 20 and is located at the tip side further than the first projection 23 in a longitudinal direction of the lower plate 20, and a second barrel 50 which is installed rising at the side part 22 of the lower plate 20 and is located at the rear end side than the first projection 23 in longitudinal direction of the lower plate 20. The first barrel 40 is installed only at one side part 21 of the lower plate 20 and the second barrel 50 is also installed only on the other side part 22 of the lower plate 20. In the state that a flexible board 6 is crimped between the lower plate 20 and the upper plate 30, the first barrel 40 and the second barrel 50 are bent toward the upper plate 30 to be crimped to the flexible board 6.

Description

  The present invention relates to a crimp terminal that is crimped to a flexible substrate.

  There is known a terminal fitting that includes an upper plate and a lower plate, and is formed by standing a plurality of barrels on the lower plate, bending the barrel, and sandwiching a flexible substrate between the upper plate and the lower plate (for example, Patent Documents) 1).

JP 2008-198416 A

  In the terminal fitting described above, when the barrel is bent, a tooth mold having a recess having a semicircular cross section is used, and the barrel is bent along the inner surface of the recess. In addition, since the barrels of the terminal fittings having the above structure are opposed to each other, the tooth mold is formed with a recess for bending each barrel adjacent thereto.

  Here, when the terminal fitting is downsized, adjacent concave portions overlap in the tooth mold, and the cross-sectional shape of the concave portion does not become a complete semicircle. As a result, the barrel cannot be bent sufficiently, and the crimping strength between the flexible substrate and the terminal fitting may be reduced.

  The problem to be solved by the present invention is to provide a crimp terminal that can be reduced in size while suppressing a decrease in crimp strength.

  The crimp terminal according to the present invention includes a lower plate having a first protrusion, an upper plate having a second protrusion opposed to the first protrusion, and a side plate of the lower plate. A first barrel positioned on the front end side of the first protrusion in the longitudinal direction of the lower plate, and a rear end side of the lower protrusion in the longitudinal direction of the lower plate. The first barrel is provided only on one side of the lower plate, and the second barrel is provided only on the other side of the lower plate. The first and second barrels are bent toward the upper plate in a state where the flexible substrate is sandwiched between the lower plate and the upper plate, and are crimped to the flexible substrate. And

  In the above invention, the lower plate has a third protrusion positioned on the tip side of the first protrusion so as to correspond to the first barrel, and the first protrusion so as to correspond to the second barrel. A fourth protrusion positioned on the rear end side of the protrusion, and the upper plate has a fifth protrusion opposed to the third protrusion and a sixth protrusion opposed to the fourth protrusion. And a protrusion.

  In the above invention, the length of the first barrel and the length of the second barrel are substantially the same, and the first barrel is more than the central portion in the short direction of the upper plate. Pressing a position close to the first upright portion of one barrel, and pressing the second barrel closer to the second upright portion of the second barrel than the central portion of the upper plate Also good.

  In the above invention, the length of the first barrel and the length of the second barrel are substantially the same, and the first barrel is more than the central portion in the short direction of the upper plate. Pressing a position far from the first standing part of one barrel, and pressing the second barrel also from a second standing part of the second barrel than the central part of the upper plate Also good.

  In the above invention, the length of the first barrel is different from the length of the second barrel, and the first barrel is more than the first portion in the short direction of the upper plate. A position close to the first standing part of the barrel may be pressed, and the second barrel may press a position farther from the second standing part of the second barrel than the center part of the upper plate. .

  In the above invention, the length of the first barrel is different from the length of the second barrel, and the first barrel is more than the first portion in the short direction of the upper plate. The position far from the 1st standing part of a barrel may be pressed, and the 2nd barrel may press the position near the 2nd standing part of the 2nd barrel rather than the central part of the upper board. .

  In the above invention, the length of the first barrel and the length of the second barrel are substantially the same, and the first barrel presses a central portion in the short direction of the upper plate. The second barrel may also press the central portion of the upper plate.

  According to the present invention, the first barrel located on the front end side is provided only on one side of the lower plate, and the second barrel located on the rear end side is provided only on the other side of the lower plate. Therefore, downsizing can be achieved while suppressing a decrease in the pressure bonding strength.

FIG. 1 is a perspective view of a crimp terminal according to the first embodiment of the present invention. FIG. 2 is a plan view of the crimp terminal in the first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a perspective view showing a state in which the crimp terminal in the first embodiment of the present invention is crimped to the flexible substrate. FIG. 5 is an enlarged plan view of a portion V in FIG. FIG. 6 is an enlarged cross-sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a perspective view showing a first modification of the crimp terminal in the first embodiment of the present invention. FIG. 9 is an enlarged plan view of a portion IX in FIG. FIG. 10 is a perspective view showing a second modification of the crimp terminal in the first embodiment of the present invention. FIG. 11 is an enlarged plan view of a portion XI in FIG. FIG. 12 is a perspective view showing a third modification of the crimp terminal in the first embodiment of the present invention. FIG. 13 is a cross-sectional view for explaining the operation of the crimp terminal in the first embodiment of the present invention. FIG. 14 is a perspective view of a crimp terminal according to the second embodiment of the present invention. FIG. 15 is a perspective view showing a state in which the crimp terminal in the second embodiment of the present invention is crimped to the flexible substrate. FIG. 16 is an enlarged plan view of the XVI portion of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<< first embodiment >>
1 is a perspective view of a crimp terminal according to the present embodiment, FIG. 2 is a plan view of the crimp terminal according to the present embodiment, and FIG. 3 is a cross-sectional view taken along line III-III in FIG.

  The crimp terminal 1 in the present embodiment is a terminal that is crimped to a flexible substrate 6 (see FIG. 4) such as a membrane circuit or a flexible printed circuit (FPC). For example, various sensors ( It is built into the connector that connects the flexible board) and the wire.

  As shown in FIG. 1, the crimp terminal 1 includes a fitting portion 10, a lower plate 20, an upper plate 30, a first barrel 40, and a second barrel 50. The crimp terminal 1 is made of a conductive material such as copper or brass.

  The fitting portion 10 is a portion that fits with another terminal. In addition, in FIG. 1, although the whole fitting part 10 is abbreviate | omitted, it has a cylindrical shape (less sector pull type) or a pin shape (pin type).

  The lower plate 20 is a portion of the crimp terminal 1 that sandwiches the flexible substrate 6 with an upper plate 30 described later. The lower plate 20 is composed of a plate-like member and extends from the bottom surface of the fitting portion 10.

  As shown in FIGS. 2 and 3, the lower plate 20 includes a first side portion 21, a second side portion 22, a first connection projection 23, a first auxiliary projection 24, and a second side projection. And an auxiliary protrusion 25.

  As shown in FIG. 2, the first side portion 21 is a side portion along the longitudinal direction of the lower plate 20 and is located on the right side in the drawing. A first barrel 40 described later is erected on the first side portion 21.

  As shown in FIG. 2, the second side portion 22 is a side portion along the longitudinal direction of the lower plate 20, and is located on the left side in the drawing. A second barrel 50 to be described later is erected on the second side portion 22.

The first connection protrusion 23 is a portion that becomes an electrical contact with the flexible substrate 6 and is formed so as to protrude toward the upper plate 30 as shown in FIG. The height of the first connecting projection 23 has a t _1. Note that the first connection protrusion 23 may be configured by attaching a conductive block member having a height t ₁ to the upper surface of the lower plate 20.

  As shown in FIG. 2, the first connection protrusion 23 is provided between the first barrel 40 and the second barrel 50 described later in the central portion of the lower plate 20 in the short direction (X direction in the drawing). positioned. Further, as shown in the figure, the longitudinal direction of the first connection projection 23 substantially coincides with the longitudinal direction of the lower plate 20 (Y direction in the figure).

As shown in FIG. 3, the first auxiliary protrusion 24 is formed so as to protrude toward the upper plate 30. The height of the first auxiliary protrusion 24 has a t _2. The first auxiliary protrusion 24 is provided to fix the flexible substrate 6 between the third auxiliary protrusion 34 (described later) (see FIG. 7). Note that the first auxiliary protrusion 24 may be configured by attaching a conductive block member having a height t ₂ to the upper surface of the lower plate 20.

  As shown in FIG. 2, the first auxiliary protrusion 24 has a first connection so as to correspond to a first barrel 40 which will be described later, in the central portion of the lower plate 20 in the short direction (X direction in the drawing). It is located on the tip side from the protrusion 23. Here, the “front end side” means the end 20 a side of the lower plate 20 in the entire crimp terminal 1, while the “rear end side” is the opposite side (the fitting terminal 10 side in the entire crimp terminal 1 side). ).

  As shown in the figure, the longitudinal direction of the first auxiliary protrusion 24 substantially coincides with the short direction (X direction in the figure) of the lower plate 20.

As shown in FIG. 3, the second auxiliary protrusion 25 is formed so as to protrude toward the upper plate 30. Height of the second auxiliary projection 25 has a t _3. The second auxiliary protrusion 25 is provided to fix the flexible substrate 6 between the fourth auxiliary protrusion 35 described later (see FIG. 7). Note that the second auxiliary protrusion 25 may be configured by attaching a conductive block member having a height t ₃ to the upper surface of the lower plate 20.

  As shown in FIG. 2, the second auxiliary projection 25 has a first connection so as to correspond to a second barrel 50 which will be described later, in the central portion of the lower plate 20 in the short direction (X direction in the drawing). It is located on the rear end side with respect to the protrusion 23. As shown in the figure, the longitudinal direction of the second auxiliary projection 25 substantially coincides with the short direction (X direction in the figure) of the lower plate 20.

  Here, as shown in FIG. 2, a virtual straight line La connecting the center of the first auxiliary protrusion 24 and the center of the second auxiliary protrusion 25 passes through the first connection protrusion 23.

  As shown in FIG. 1, the upper plate 30 is composed of a plate-like member and extends from the upper surface of the fitting portion 10. The upper plate 30 has a bent portion 31 and an upper plate main body portion 32.

  The bent portion 31 is a portion that is bent when the crimp terminal 1 is crimped to the flexible substrate 6 (see FIG. 4), and connects the fitting portion 10 and the upper plate body portion 32 (described later).

  The upper plate main body portion 32 is a portion that sandwiches the flexible substrate 6 with the lower plate 20. As shown in FIGS. 2 and 3, the upper plate main body 32 includes a second connection protrusion 33, a third auxiliary protrusion 34, and a fourth auxiliary protrusion 35.

The second connection protrusion 33 is a portion that becomes an electrical contact with the flexible substrate 6 and is formed so as to protrude toward the lower plate 20 as shown in FIG. 3. The height of the second connecting projection 33 has a t _4. Note that the second connection protrusion 33 may be configured by attaching a conductive block member having a height t ₄ to the lower surface of the upper plate 30.

  As described above, in the crimp terminal 1 according to the present embodiment, in addition to the first connection protrusion 23 formed on the lower plate 20, the upper plate 30 also has a second electrical contact with the flexible substrate 6. Since the connection protrusion 33 is formed, electrical connection with the electric circuits formed on both surfaces of the flexible substrate 6 can be achieved.

  As shown in FIG. 2, the second connection protrusion 33 is located at the center portion of the upper plate 30 in the short direction (X direction in the drawing) and faces the first connection protrusion 23 of the lower plate 20. Yes.

  Further, the second connection protrusion 33 has a longitudinal direction substantially coincided with a short direction (X direction in the drawing) of the upper plate main body portion 32 as shown in a plan view shown in FIG. The first connection protrusions 20 are orthogonal to the 20 first connection protrusions 23.

As shown in FIG. 3, the third auxiliary protrusion 34 is formed so as to protrude toward the lower plate 20. The height of the third auxiliary projection 34 has a t _5. The third auxiliary protrusion 34 is provided to fix the flexible substrate 6 by concentrating stress between the first auxiliary protrusion 24 (see FIG. 7). Note that the third auxiliary protrusion 34 may be configured by attaching a conductive block member having a height t ₅ to the lower surface of the upper plate 30.

  As shown in FIG. 2, the third auxiliary protrusion 34 is located at the center portion in the short side direction (X direction in the drawing) on the front end side of the upper plate 20, and the first auxiliary protrusion 24 of the lower plate 20. Opposite.

  Further, the third auxiliary projection 34 has a longitudinal direction substantially coincided with a longitudinal direction (Y direction in the figure) of the upper plate main body 32 as seen in a plan view shown in FIG. The first auxiliary projections 24 are orthogonal to each other.

As shown in FIG. 3, the fourth auxiliary protrusion 35 is formed so as to protrude toward the lower plate 20. The height of the fourth auxiliary protrusions 35 has a t _6. The fourth auxiliary protrusion 35 is provided to fix the flexible substrate 6 between the second auxiliary protrusion 25 (see FIG. 7). The fourth auxiliary protrusion 35 may be configured by attaching a conductive block member having a height t ₆ to the lower surface of the upper plate 30.

  As shown in FIG. 2, the fourth auxiliary projection 35 is located at the center portion in the short side direction (X direction in the drawing) on the rear end side of the upper plate 20, and the second auxiliary projection 25 of the lower plate 20. Is facing.

  Further, the fourth auxiliary projection 35 has a longitudinal direction substantially coincided with the longitudinal direction (Y direction in the drawing) of the upper plate main body portion 32 as seen in a plan view shown in FIG. The second auxiliary protrusion 25 is orthogonal to the second auxiliary protrusion 25.

  Here, the first connection protrusion 23, the first auxiliary protrusion 24, the second connection protrusion 33, and the third auxiliary protrusion 34 of the lower plate 20 described above are the following (1). The formula is satisfied.

但し、上記（１）式において、ｔ_１が第１の接続突起２３の高さであり、ｔ_２が第１の補助突起２４の高さであり、ｔ_４が第２の接続突起３３の高さであり、ｔ_５が第３の補助突起３４の高さである。

However, in the above formula (1), t ₁ is the height of the first connection protrusion 23, t ₂ is the height of the first auxiliary protrusion 24, and t ₄ is the height of the second connection protrusion 33. T ₅ is the height of the third auxiliary protrusion 34.

  The first connection protrusion 23, the second auxiliary protrusion 25, the second connection protrusion 33, and the fourth auxiliary protrusion 35 of the upper plate 30 satisfy the following expression (2). It is like that.

但し、上記（２）式において、ｔ_１が第１の接続突起２３の高さであり、ｔ_３が第２の補助突起２５の高さであり、ｔ_４が第２の接続突起３３の高さであり、ｔ_６が第４の補助突起３５の高さである。

However, in the above equation (2), t ₁ is the height of the first connection protrusion 23, t ₃ is the height of the second auxiliary protrusion 25, and t ₄ is the height of the second connection protrusion 33. T ₆ is the height of the fourth auxiliary projection 35.

  Thus, by satisfy | filling said Formula (1) and (2) Formula, when fixing the flexible substrate 6 between the lower board 20 and the upper board 30, the upper board 30 bends (FIG. 7).

  As shown in FIG. 2, a virtual straight line Lb connecting the center of the third auxiliary protrusion 34 and the center of the fourth auxiliary protrusion 35 passes through the second connection protrusion 33. The virtual straight line Lb overlaps the virtual straight line La connecting the centers of the first and second auxiliary protrusions 24 and 25 in the plan view shown in FIG.

  As shown in FIGS. 1 and 2, the first barrel 40 is composed of a plate-like member, and is fixed to the upper plate 30 by being bent. The first barrel 40 is erected on the first side portion 21 of the lower plate 20 and is located on the distal end side of the first connection protrusion 23 in the longitudinal direction (Y direction in the drawing) of the lower plate 20. Yes.

  As shown in FIG. 2, the first barrel 40 includes a first standing portion 41 and a first pressing surface 42.

  As shown in FIG. 2, the first upright portion 41 is a portion extending from the first side portion 21 of the lower plate 20, and is bent substantially perpendicularly to the upper surface of the lower plate 20.

  As shown in FIGS. 1 and 2, the first pressing surface 42 is located at the upper end of the first barrel 40. The first pressing surface 42 presses the upper surface of the upper plate 30 when the first barrel 40 is bent toward the upper plate 30.

The length of the first barrel 40 (the length from the first upright portion 41 to the first pressing surface 42) is short of the upper plate 30 when the first barrel 40 is bent. the position closer to the first upright portion 41 than the central portion 36 (described later) in the direction, the first pressing surface 42 is in the first length H ₁ such as to press.

  As shown in FIGS. 1 and 2, the second barrel 50 is made of a plate-like member, and is fixed to the upper plate 30 by being bent. The second barrel 50 is erected on the second side portion 22 of the lower plate 20, and is located on the rear end side of the first connection protrusion 23 in the longitudinal direction (Y direction in the drawing) of the lower plate 20. ing.

  As shown in FIGS. 1 and 2, the second barrel 50 has a second upright portion 51 and a second pressing surface 52.

  As shown in FIGS. 1 and 2, the second upright portion 51 is a portion extending from the second side portion 22 of the lower plate 20, and is bent substantially perpendicular to the upper surface of the lower plate 20. ing.

  The 2nd press surface 52 is located in the upper end of the 2nd barrel 50, as shown in FIG.1 and FIG.2. The second pressing surface 52 presses the upper surface of the upper plate 30 when the second barrel 50 is bent toward the upper plate 30.

Note that the length of the second barrel 50 (the length from the second upright portion 51 to the second pressing surface 52) is short of the upper plate 30 when the second barrel 50 is bent. the position close to the second upright portion 51 than the central portion 36 (described later) in the direction, the second pressing surface 52 is a second length H _2, such as to press. In the present embodiment, the second length H ₂ of the second barrel 50 is substantially the same as the first length H ₁ of the first barrel 40 (H ₁ ≈H ₂ ).

  Here, in the present embodiment, the first barrel 40 is erected only on the first side portion 21 on the front end side of the first connection protrusion 23 in the longitudinal direction of the lower plate 20, and the second side portion. No barrel is set up at 22. On the other hand, in the longitudinal direction of the lower plate 20, on the rear end side of the first connection protrusion 23, the second barrel 50 is erected only on the second side portion 22, and the barrel is formed on the first side portion 21. It is not set up.

  Contrary to the above, the first barrel 40 is erected only on the second side portion 22 on the front end side of the first connection protrusion 23 in the longitudinal direction of the lower plate 20, and the first side portion. 21 does not have to have a barrel. Further, in the longitudinal direction of the lower plate 20, the second barrel 50 is erected only on the first side portion 21 on the rear end side of the first connection protrusion 23, and the barrel is placed on the second side portion 22. You do not have to stand up.

  Next, the effect | action of the crimp terminal 1 in this embodiment is demonstrated.

  4 is a perspective view showing a state in which the crimp terminal according to the present embodiment is crimped to a flexible substrate, FIG. 5 is an enlarged plan view of a V portion in FIG. 4, and FIG. 6 is an enlarged cross-sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5, FIG. 8 is a perspective view showing a first modification of the crimp terminal in the present embodiment, FIG. 9 is an enlarged plan view of the IX portion in FIG. Is a perspective view showing a second modification of the crimp terminal in the present embodiment, FIG. 11 is an enlarged plan view of the XI portion of FIG. 10, and FIG. 12 is a perspective view showing a third modification of the crimp terminal in the present embodiment, FIG. 13 is a cross-sectional view for explaining the action of the crimp terminal in the present embodiment.

  When the crimp terminal 1 is crimped to the flexible substrate 6, first, as shown in FIGS. 4 and 5, first, the first and second barrels 40 and 50 are passed through the through holes 61 formed in the flexible substrate 6. Then, the flexible substrate 6 is placed on the lower plate 20. Although not shown in the drawing, an electric circuit (wiring) is formed on the flexible substrate 6, and the conductor is exposed at a position corresponding to the first connection protrusion 23 or the second connection protrusion 33.

  Here, when an electric circuit is formed only on one side of the flexible substrate 6, one of the first and second connection protrusions 23 and 33 is in contact with the conductor of the flexible substrate 6. For this reason, the circuit formation surface of the flexible substrate 6 may be directed to either the lower plate 20 side or the upper plate 30 side, and the workability when the flexible substrate 6 is attached to the crimp terminal 1 is excellent.

  Next, the bent portion 31 of the upper plate 30 is bent toward the lower plate 20, and the second connection protrusion 33 formed on the upper plate main body portion 32 is brought into contact with the flexible substrate 6.

Next, as shown in FIG. 6, the upper portion of the first barrel 40 is bent into a semicircular arc shape having a radius R ₁ and the upper surface of the upper plate 30 is pressed. Although not particularly illustrated, the upper portion of the second barrel 50 is also bent into a semicircular arc shape with a radius R ₂ (not shown) in the same manner as the first barrel 40 to press the upper surface of the upper plate 30. The radius R ₂ of the second barrel 50 is substantially the same as the radius R ₁ of the first barrel 40 (R ₁ ≈R ₂ ). Further, the radii R ₁ and R ₂ of the first and second barrels 40 and 50 correspond to the radius R ₃ (see FIG. 13) of the recess 71 of the tooth mold 7 described later.

  In the upper plate 30 thus pressed, the pressing force is transmitted to the third and fourth auxiliary protrusions 34 and 35, and the third and fourth auxiliary protrusions 34 and 35 strongly press the flexible substrate 6.

  On the other hand, as described above, the lower plate 20 is formed with the first and second auxiliary projections 24 and 25 facing the third and fourth auxiliary projections 34 and 35 of the upper plate 30. As a result, the flexible substrate 6 is sandwiched between the first auxiliary projection 24 and the third auxiliary projection 34, and is fixed between the second auxiliary projection 25 and the fourth auxiliary projection 35 (crimping). )

  Thus, the pressing force of the first and second barrels 40 and 50 is concentrated between the first and third auxiliary protrusions 24 and 34 and between the second and fourth auxiliary protrusions 25 and 35. The crimp terminal 1 is crimped to the flexible substrate 6 with a strong crimp strength.

  Further, as described above, in the plan view shown in FIG. 2, since the first auxiliary protrusion 24 and the third auxiliary protrusion 34 are orthogonal to each other, even if the upper plate 30 is displaced with respect to the lower plate 20. The flexible substrate 6 can be securely sandwiched between the first auxiliary protrusion 24 and the third auxiliary protrusion 34.

  Similarly, in the plan view shown in FIG. 2, since the second auxiliary projection 25 and the fourth auxiliary projection 35 are orthogonal to each other, even if the upper plate 30 is displaced with respect to the lower plate 20, The flexible substrate 6 can be securely sandwiched between the auxiliary protrusion 25 and the fourth auxiliary protrusion 35.

  Here, as shown in FIG. 7, the first and second barrels 40 and 50 press the upper plate 30, so that the second auxiliary protrusion 34 and the fourth auxiliary protrusion 35 are positioned between the second auxiliary protrusion 35 and the second auxiliary protrusion 35. The pressing force is also transmitted to the connection protrusion 33, and the second connection protrusion 33 also presses the flexible substrate 6.

  Further, in the crimp terminal 1 in the present embodiment, a virtual straight line Lb connecting the centers of the third and fourth auxiliary protrusions 34 and 35 on the upper plate 30 passes through the second connection protrusion 33 (see FIG. 2). ), The pressing force of the first and second barrels 40 and 50 is reliably transmitted to the second connection protrusion 33 via the third and fourth auxiliary protrusions 34 and 45.

  On the other hand, the lower plate 20 is formed with a first connection protrusion 23 that faces the second connection protrusion 33 of the upper plate 30. For this reason, the flexible substrate 6 is sandwiched between the first connection protrusion 23 and the second connection protrusion 33 and fixed.

  Further, in the plan view shown in FIG. 2, since the first connection protrusion 23 and the second connection protrusion 33 are orthogonal to each other, even if the upper plate 30 is displaced with respect to the lower plate 20, The flexible substrate 6 can be securely sandwiched between the protrusion 23 and the second connection protrusion 33.

  Further, as described above, the first and second connection protrusions 23 and 33 and the first and third auxiliary protrusions 24 and 34 satisfy the above formula (1), and the first and second connection protrusions 23 and 33 are satisfied. And the second and fourth auxiliary projections 25 and 35 satisfy the above formula (2), the upper plate 30 pressed against the first and second barrels 40 and 50 is, as shown in FIG. The second connection protrusion 33 is bent so as to rise.

  As a result, in the upper plate 30, an elastic force directed to the lower plate 20 acts on the second connection protrusion 33, and the flexible substrate 6 is strongly fixed between the first and second connection protrusions 23 and 33. . In particular, when the membrane circuit is fixed, the membrane circuit itself is easily bent, and thus the membrane circuit can be firmly fixed by pressing the elastic force as described above.

  As described above, in the crimp terminal 1 according to the present embodiment, the first connection protrusion 23 and the second connection protrusion 33, the first auxiliary protrusion 24 and the third auxiliary protrusion 34, and the second Since the flexible substrate 6 is fixed at the three points between the auxiliary projection 25 and the fourth auxiliary projection 35, the crimping strength between the flexible substrate and the crimp terminal 1 is improved.

  Further, in the crimp terminal 1 according to the present embodiment, the first and second connection protrusions 23 and 33 are sandwiched between the first and second connection protrusions 23 and 33 of the electrical contacts while pressing the flexible substrate 6. Strongly adheres to the flexible substrate 6 and the reliability of electrical connection between the flexible substrate 6 and the crimp terminal 1 is improved.

  Further, in the crimp terminal 1 according to the present embodiment, as shown in FIG. 5, the first pressing surface 42 of the first barrel 40 has a central portion 36 in the short direction of the upper plate 30 (upper plate main body portion 32). The position closer to the first upright portion 41 of the first barrel 40 is pressed than (described later). The second pressing surface 52 of the second barrel also presses a position closer to the second standing portion 51 of the second barrel 50 than the center portion 36 in the short direction of the upper plate 30.

That is, in a plan view shown in the figure, than the distance L ₁ from the first upright portion 41 to the center portion 36 (center line CL), the distance from the first upright portion 41 to the first pressing surface 42 L The first barrel 40 presses the upper plate 30 (the position on the right side in the drawing with respect to the central portion 36) so that the length ₂ is relatively shorter (L ₁ > L ₂ ). Moreover, than the distance L ₃ from the second upright portion 51 to the center portion 36 (center line CL), towards the second upright portion 51 of the distance L ₄ to the second pressing surface 52 is relatively short In this way (L ₃ > L ₄ ), the second barrel 50 presses the upper plate 30 (the position on the left side in the drawing with respect to the central portion 36).

  The central portion 36 of the upper plate 30 is a portion with a pattern in FIG. 5, and is located at the central portion in the short direction of the upper plate 30 with the center line CL along the longitudinal direction of the upper plate 30 as the center. is doing.

  Thus, when the first and second barrels 40 and 50 press both sides of the upper plate 30 with the center line CL interposed therebetween, the upper plate 30 is pressed in a well-balanced manner, and the flexible substrate 6 is stably fixed. be able to.

  In this embodiment, the first and second barrels 40 and 50 press the positions closer to the first and second upright portions 41 and 51 than the central portion 36 in the short direction of the upper plate 30. However, it is not particularly limited. For example, as shown in FIGS. 8 and 9, the first and second barrels 40, 50 have the first and second upright portions 41, 50 rather than the central portion 36 in the short direction of the upper plate 30. A position far from 51 may be pressed.

That is, in a plan view shown in FIG. 9, the distance L ₅ from the first upright portion 41 to the first pressing surface 42, than the distance L ₁ from the first upright portion 41 to the central portion 36 relative The first barrel 40 may press the upper plate 30 so as to be longer (L ₁ <L ₅ ). The length of the first barrel 40 in this case is such that when the first barrel 40 is bent, the first barrel 40 is positioned farther from the first upright portion 41 than the central portion 36 in the short direction of the upper plate 30. The pressing surface 42 is such that the pressing surface 42 is pressed, and is a third length H ₃ (not shown) that is relatively longer than the first length H ₁ described above (H ₁ <H ₃ ).

Similarly, the distance L ₆ from the second upright portion 51 to the second pressing surface 52 is relatively longer than the distance L ₃ from the second upright portion 51 to the central portion 36 ( L ₃ <L ₆ ), and the second barrel 50 may press the upper plate 30. The length of the second barrel 50 in this case is substantially the same as the third length H ₃ of the first barrel 40, a relatively longer first than the second length H ₂ described above 4 has a length H ₄ (not shown) (H ₂ <H ₄ ≈H ₃ ). The fourth length H ₄ of the second barrel, when the second barrel 50 is bent further from the second upright portion 51 than the central portion 36 in the lateral direction of the upper plate 30 The length is such that the second pressing surface 52 presses the position.

  In this way, the first and second barrels 40 and 50 are bent so as to press a position farther from the first and second upright portions 41 and 51 than the central portion 36 in the short direction of the upper plate 30. The bending radius can be increased. Thereby, bending (break) of the 1st and 2nd barrels 40 and 50 can be controlled.

  Further, as shown in FIGS. 10 and 11, the first barrel 40 presses a position farther from the first upright portion 41 than the center portion 36 in the short direction of the upper plate 30, and the second barrel 50. However, you may press the position near the 2nd standing part 51 rather than the center part 36 in the transversal direction of the upper board 30. FIG.

The length of the first and second barrels 40 and 50 in this case is different, the first barrel 40 has a third length H _3, the second barrel 50 is first The length H is ₂ .

  On the contrary, as shown in FIG. 12, the first barrel 40 presses a position closer to the first upright portion 41 than the center portion 36 in the short direction of the upper plate 30, and the second The barrel 50 may press a position farther from the second upright portion 51 than the central portion 36 in the short direction of the upper plate 30.

  Here, when the first and second barrels 40 and 50 are bent, the tooth mold 7 is used as shown in FIG.

  The tooth mold 7 is formed with a first recess 71 and a second recess 72.

As shown in FIG. 13, the first recess 71 has a semicircular cross-sectional shape, and the radius of the semicircular shape is R ₃ .

  As shown in FIG. 13, the second recess 72 has a rectangular cross section corresponding to the upper plate 30 and is connected to the first recess 71. The second recess 72 is formed to prevent interference between the tooth mold 7 and the upper plate 30 when the first and second barrels 40 and 50 are bent.

First, as shown in the figure, the first and second barrels 40 and 50 in a standing state are brought into contact with the inner surface 71 a of the first recess 71, and the tooth mold 7 is pressed toward the upper plate 30. As a result, the first and second barrels 40 and 50 are bent (clamped) along the first recess 71 (radius R ₃ ), and the first and second pressing surfaces 42 and 52 are formed on the upper plate 30. It abuts on the upper surface.

  Here, in a crimp terminal in which barrels facing each other are erected on both sides of the lower plate, a tooth mold in which the first recesses are formed adjacent to each other is used. When such a crimp terminal is reduced in size, in the tooth mold, adjacent first concave portions overlap each other, and the first concave portion does not become a complete semicircle. For this reason, it becomes impossible to bend | fold a barrel fully, and there exists a possibility that the crimping | compression-bonding strength of a flexible substrate and a crimp terminal may fall.

  On the other hand, in the crimp terminal 1 according to the present embodiment, the first barrel 40 located on the front end side is provided only on the first side portion 21 of the lower plate 20, and the second barrel 50 located on the rear end side is provided on the lower side. Since the first barrel 40 and the second barrel 50 are provided only on the second side portion 22 of the plate 20 and do not face each other, even if the crimp terminal 1 is reduced in size, The first recesses 71 do not overlap with each other, and the cross-sectional shape of the first recesses 71 can be a complete semicircle. Thereby, the 1st and 2nd barrels 40 and 50 can be bent 180 degree | times, and the upper board 30 can be strongly pressed by the 1st and 2nd press surfaces 42 and 52. FIG. That is, the crimp terminal 1 in the present embodiment can be reduced in size while suppressing a decrease in the crimp strength with the flexible substrate 6.

  The first connection protrusion 23 corresponds to an example of the first protrusion of the present invention, the first auxiliary protrusion 24 corresponds to an example of the third protrusion of the present invention, and the second auxiliary protrusion 25 corresponds to the main protrusion. It corresponds to an example of the fourth protrusion of the invention, the second connection protrusion 33 corresponds to an example of the second protrusion of the present invention, and the third auxiliary protrusion 34 corresponds to an example of the fifth protrusion of the present invention. The fourth auxiliary protrusion 35 corresponds to an example of the sixth protrusion of the present invention.

<< Second Embodiment >>
Next, a second embodiment will be described.

  14 is a perspective view of the crimp terminal in the present embodiment, FIG. 15 is a perspective view showing a state in which the crimp terminal in the present embodiment is crimped to the flexible substrate, and FIG. 16 is an enlarged plan view of the XVI portion of FIG.

  As shown in FIG. 14, the crimp terminal 1a according to the present embodiment has a configuration in which the auxiliary projections are not provided on the lower plate 20 and the upper plate 30 and the configuration of the first and second barrels 40a and 50a. Although different from the first embodiment, the other configurations are the same. Only the differences from the first embodiment will be described below, and portions having the same configuration as in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIGS. 15 and 16, the first and second barrels 40 a and 50 a in the present embodiment have substantially the same length, and are bent toward the upper plate 30 to be bent. The central portion 36 in the short direction is pressed. Therefore, when the first and second barrels 40a and 50a press the upper plate 30, the first and second pressing surfaces 42a and 52a and the second connection protrusion 33 are positioned on the center line CL. ing.

  As described above, the first and second barrels 40a and 50a press the central portion 36 in the short direction of the upper plate 30 so that the pressing force is efficiently applied to the second connection protrusion 33 along the center line CL. Can communicate well. Thereby, the flexible substrate 6 can be strongly fixed between the first connection protrusion 23 and the second connection protrusion 33.

  In the present embodiment, both the first and second barrels 40a and 50a press the central portion 36 in the short direction of the upper plate 30, but there is no particular limitation. For example, one of the first and second barrels 40a and 50a may press a position closer to the first upright portion 41a or the second upright portion 51a than the central portion 36. Further, one of the first and second barrels 40 a and 50 a may press a position farther from the first upright portion 41 a or the second upright portion 51 a than the central portion 36.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Crimp terminal 10 ... Fitting part 20 ... Lower board 21 ... 1st side part 22 ... 2nd side part 23 ... 1st connection protrusion 24 ... 1st auxiliary protrusion 25 ... 2nd auxiliary protrusion 30 ... Upper plate 31 ... Bent portion 32 ... Upper plate main body portion 33 ... Second connection projection 34 ... Third auxiliary projection 35 ... Fourth auxiliary projection 40 ... First barrel 41 ... First upright portion 42 ... First The second pressing surface 52 ... the second pressing surface 6 ... the flexible substrate 61 ... the through hole 7 ... the tooth mold 71 ... the first recess 71a ... the inner surface 72 ... the second recess

Claims (7)

A lower plate having a first protrusion;
An upper plate having a second protrusion facing the first protrusion;
A first barrel that is erected on a side portion of the lower plate and is located on a tip side of the first protrusion in the longitudinal direction of the lower plate;
A second barrel that is erected on the side of the lower plate and is located on the rear end side of the first protrusion in the longitudinal direction of the lower plate,
The first barrel is provided only on one side of the lower plate,
The second barrel is provided only on the other side of the lower plate,
In a state where a flexible substrate is sandwiched between the lower plate and the upper plate, the first barrel and the second barrel are bent toward the upper plate to be crimped to the flexible substrate. Crimp terminal. The crimp terminal according to claim 1,
The lower plate is
A third protrusion positioned on the tip side of the first protrusion so as to correspond to the first barrel;
A fourth protrusion located on the rear end side of the first protrusion so as to correspond to the second barrel,
The upper plate is
A fifth protrusion facing the third protrusion;
A crimp terminal having a sixth protrusion opposed to the fourth protrusion; The crimp terminal according to claim 2,
The length of the first barrel and the length of the second barrel are substantially the same;
The first barrel presses a position closer to the first upright portion of the first barrel than the central portion in the lateral direction of the upper plate,
The crimp terminal according to claim 2, wherein the second barrel also presses a position closer to the second upright portion of the second barrel than the central portion of the upper plate. The crimp terminal according to claim 2,
The length of the first barrel and the length of the second barrel are substantially the same;
The first barrel presses a position farther from the first standing part of the first barrel than the center part in the short direction of the upper plate,
The crimp terminal, wherein the second barrel also presses a position farther from the second upright portion of the second barrel than the central portion of the upper plate. The crimp terminal according to claim 2,
The length of the first barrel is different from the length of the second barrel;
The first barrel presses a position closer to the first upright portion of the first barrel than the central portion in the short direction of the upper plate,
The crimp terminal, wherein the second barrel presses a position farther from the second upright portion of the second barrel than the central portion of the upper plate. The crimp terminal according to claim 2,
The length of the first barrel is different from the length of the second barrel;
The first barrel presses a position farther from the first upright portion of the first barrel than the central portion in the short direction of the upper plate,
The crimp terminal, wherein the second barrel presses a position closer to the second upright portion of the second barrel than the central portion of the upper plate. The crimp terminal according to claim 1,
The length of the first barrel and the length of the second barrel are substantially the same;
The first barrel presses the central portion in the short direction of the upper plate,
The crimp terminal, wherein the second barrel also presses the central portion of the upper plate.

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