JP2017208166A - Terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal such that a box part can sufficiently protect a deflection spring part.SOLUTION: A female terminal 1A comprises a box part 2 having a bottom wall 3, a pair of side walls 4, 5, and a ceiling wall 6 formed of one plate in one body, and a deflection spring part 10 having one end supported by the box part 2 and arranged in the box part 2, has a male terminal 20 arranged in the box part 2 with the deflection spring part 10 deflected to deform, and comes into contact with the male terminal 20 using, as a contact load, deflection restoring force of the deflection spring part 10. The ceiling wall 6 covers the entire region of the deflection spring part 10, one side wall 5 consists of a primary side wall part 7 provided integrally from the bottom wall 3 and an auxiliary side wall part 8 provided integrally from the ceiling wall 6, an upper end side of the primary side wall part 7 and a lower end side of the auxiliary side wall part 8 are both formed into thin projection parts 7a, 8a thin in wall thickness, and the thin projection parts 7a, 8a overlap with each other.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a terminal in which a bending spring portion is disposed in a box portion.

  As this type of conventional terminal, for example, there is one disclosed in Patent Document 1. As shown in FIG. 9, the terminal 50 has a box portion 52 whose front surface is opened. In the box portion 52, a bottom wall 53, a pair of side walls 54 and 55, and a ceiling wall 56 are provided from a single plate. One side wall 55 is formed with a notch 55a. An engaging piece 57 extending from the ceiling wall 56 is disposed in the notch 55a. The box part 52 is designed to improve the strength of the box part 52 by the engagement piece part 57 extending from the ceiling wall 56 entering the cutout part 55 a of the side wall 55.

  In the box part 52, a bending spring part 60 having a cantilever support structure in which one end is supported by the box part 52 is provided.

  A mating terminal (not shown) inserted into the box 52 is sandwiched between the flexible spring 60 and the bottom wall 53, and the terminals are electrically connected using the spring return force of the flexible spring 60 as a contact load. Is done.

JP 2010-160961 A

  However, in the conventional terminal 50, since the opening portion 56a is formed in the ceiling portion 56, other members can enter the box portion 52 through the opening portion 56a. 60 may be damaged.

  Further, the engagement piece portion 57 is structured to enter the notch portion 55a. However, since the end surface of the engagement piece portion 57 and the end surface of the notch portion 55a are merely abutted with each other, the engagement piece portion 57 is, for example, in the outward opening direction. It is easy to deform in the inward opening direction, and the form maintaining function of the box portion 52 is weak. If the box 52 is deformed, the spring characteristics of the flexure spring 60 may change. If the spring characteristics change, an appropriate contact load cannot be obtained.

  As described above, the conventional terminal 50 has a problem that the box portion 52 cannot sufficiently protect the spring portion 60 by bending.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a terminal in which the box portion can be sufficiently bent to protect the spring portion.

The present invention includes a box portion in which a bottom wall, a pair of side walls and a ceiling wall are integrally formed from a single plate, and a flexure spring portion which is supported at one end by the box portion and arranged in the box portion. And
In the terminal where the mating terminal is disposed in the box portion in a state where the flexing spring portion is flexed and deformed, and the flexural return force of the flexing spring portion is used as a contact load, the ceiling wall has the flexing spring portion Covers the entire area from the support part to the tip to the box part, and the one side wall part is provided integrally with the first side wall part and the ceiling wall through the bent part from the bottom wall. It is composed of a second side wall portion provided integrally via a bent portion, and both the upper end side of the first side wall portion and the lower end side of the second side wall portion are thin-walled projections having a thin wall thickness. Each of the terminals is formed such that the thin protrusions of each other overlap each other.

  According to the present invention, since the entire area of the bending spring part is covered with the ceiling wall, other members do not enter the box part from the ceiling wall side, and the combination part of the box part is between the two thin protrusions. Because of the superposed structure, it is difficult to deform. As described above, the box portion can be sufficiently bent to protect the spring portion.

1 shows the first embodiment of the present invention and is an overall perspective view of a terminal. FIG. It is a side view of a mating terminal before fitting and showing a first embodiment of the present invention. 1A and 1B show an embodiment of the present invention, in which FIG. 3A is a cross-sectional view taken along line AA in FIG. 2, and FIG. FIG. 3 is a perspective view of the entire terminal according to the second embodiment of the present invention. The 2nd Embodiment of this invention is shown and it is a side view of the other party terminal before a terminal and a fitting. The 2nd Embodiment of this invention is shown and it is a disassembled perspective view of the combination location of a box part. The 2nd Embodiment of this invention is shown, (a) is the BB sectional drawing of FIG. 5, (b) is the C2 part enlarged view of (a). It is a front view of a box part, showing a comparative example of the present invention. A prior art example is shown, (a) is a side view of a terminal, and (b) is a plan view of the terminal.

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

(First embodiment)
1 to 3 show a first embodiment of the present invention. The female terminal 1A, which is a terminal, is formed by bending a conductive plate (such as a copper material) having a predetermined shape. 1 A of female terminals are provided with the box part 2 electrically connected with the male terminal 20 which is an other party terminal, and the electric wire connection part 15 which connects an electric wire (not shown).

  The box portion 2 has a rectangular elongated box shape with an opening on the front side and the rear side, and is formed of a bottom wall 3, a pair of side walls 4, 5 and a ceiling wall 6. The bottom wall 3 has a tab receiving surface portion 3a that is one step higher by bending the central portion in the terminal fitting direction f. One side wall 4 is integrally provided from the bottom wall 3 via a bent portion. The ceiling wall 6 is integrated with the upper surface ceiling part 6a provided integrally from the one side wall 4 via the bent part, and from both ends of the other side wall 5 in the terminal fitting direction f via the bent part. It is comprised from a pair of lower surface ceiling part 6b provided in.

  The other side wall 5 has a main side wall portion 7 which is a first side wall portion provided integrally from the bottom wall 3 via a bent portion, and a bent portion from the center portion of the ceiling wall 6 in the terminal fitting direction f. It is comprised from the auxiliary | assistant side wall part 8 which is the 2nd side wall part integrally provided via. The main side wall portion 7 is formed with a notch 9 in the center portion in the terminal fitting direction f at an upper portion thereof. The auxiliary side wall 8 is arranged so as to enter the notch 9 without a gap. Both the upper end portion corresponding to the notch portion 9 of the main side wall portion 7 and the lower end portion of the auxiliary side wall portion 8 are formed on the thin wall projections 7a and 8a, respectively, and the thin wall projections 7a and 8a. They are placed one on top of the other.

  The overlapping portions of the thin projections 7a and 8a are such that the main side wall 7 side connected to the lower surface ceiling portion 6b that supports the bending spring portion 10 is located on the inner surface side, and the lower surface that supports the bending spring portion 10. The auxiliary side wall portion 8 side not connected to the ceiling portion 6b is located on the outer surface side.

  The bending spring part 10 is arrange | positioned in the box part 2, and is arrange | positioned facing the tab receiving surface part 3a. The bending spring part 10 is extended from one lower surface ceiling part 6b, and the front-end | tip is a free end. That is, the bending spring part 10 is a cantilever support structure.

  The ceiling wall 6 (upper surface ceiling wall 6a) covers the entire region from the support portion of the bending spring portion 10 to the free end at the tip. A part of the ceiling wall 6 (upper surface ceiling wall 6a) is a free end support portion 6c that supports the free end when the bending spring portion 10 is deformed. Thereby, the bending spring part 10 bends and deforms as a both-end support structure, and functions as a spring having a higher spring constant than the spring of the cantilever support structure.

  The male terminal 20 which is a mating terminal includes a flat and thin tab portion 21 and an electric wire connecting portion (not shown) for connecting an electric wire.

  Next, the terminal fitting operation will be described. When the tab portion 21 of the male terminal 20 is inserted into the box portion 2 of the female terminal 1 </ b> A, the tip of the tab portion 21 bends and interferes with the spring portion 10. Then, in a state where the bending spring portion 10 is supported at both ends by the free end support portion 6c, the bending spring portion 10 is bent and deformed in a direction of widening the distance from the tab receiving surface portion 3a. Insertion of the tab portion 21 into the box portion 2 is allowed by the bending deformation of the bending spring portion 10, and the tab portion 21 is inserted to the fitting position. In the fitting position, the tab portion 21 is sandwiched between the tab receiving surface portion 3a and the bending spring portion 10, and the male terminal 20 and the female terminal 1A are electrically connected using the bending return force of the bending spring portion 10 as a contact load. Is done.

  As described above, the ceiling wall 6 covers the entire region from the support portion to the tip of the box portion 2 with the bending spring portion 10, and the one side wall 5 has a bent portion from the bottom wall 3. The main side wall part (first side wall part) 7 provided integrally through the ceiling wall 6 and the auxiliary side wall part (second side wall part) 8 provided integrally via the bent part from the ceiling wall 6 Both the upper end side of the side wall portion 7 and the lower end side of the auxiliary side wall portion 8 are formed on the thin projections 7a and 8a having a thin wall thickness, and the thin projections 7a and 8a are arranged to overlap each other. . Accordingly, since the entire area of the flexure spring portion 10 is covered with the ceiling wall 6, other members cannot enter the box portion 2 from the ceiling wall 6 side, and the combination portion of the box portion 2 (the main side wall portion 7 and The combination portion of the auxiliary side wall portion 8) has a structure in which the thin projections 7a and 8a are overlapped with each other, and thus is not easily deformed. Thereby, the change of the spring characteristic resulting from the deformation | transformation of the member which penetrate | invades into the box part 2, or the box part 2 can be prevented as much as possible, and the bending spring part 10 can fully be protected so that the box part 2 does not cause a function fall.

  For example, in each process of manufacturing / packaging / transporting a single terminal component, and manufacturing an assembled electric wire, the box 2 is prevented from entering the box 2 by other parts and deformation of the box 2 due to external force. It can fully protect so that the function of the bending spring part 10 may not fall.

  As shown in FIG. 8, even if the other side wall 5 is formed by overlapping the first side wall portion 7A and the second side wall portion 8A with each other, deformation of the box portion 2 can be prevented. However, when the width of the terminal of the comparative example in FIG. 8 is W2, the width of the female terminal 1 of the first embodiment is W1, and the female terminal 1 of the first embodiment is the same as the female terminal 1 of the first embodiment. There is an advantage that the width can be reduced by the thickness d (= W2−W1).

  Of the main side wall part 7 and the auxiliary side wall part 8, the side wall part connected to the supporting portion of the bending spring part 10, that is, the thin projection 7a of the main side wall part 7 is arranged on the inner surface side, and the auxiliary side wall part is not so. Eight thin protrusions 8a are arranged on the outer surface side. Therefore, since the main side wall part 7 is less likely to open outward than the auxiliary side wall part 8, the function of the flexible spring part 10 is reduced due to deformation of the box part 2 (outside opening of the main side wall part 7) (for example, (Change in spring constant) can be prevented more reliably.

(Second Embodiment)
4 to 7 show a second embodiment of the present invention. The female terminal 1B of the second embodiment is different from that of the first embodiment only in the following configuration. That is, the locking hole 12 is formed in the thin projection 7 a of the main side wall 7, and the locking projection 13 inserted into the locking hole 12 is provided in the thin projection 8 a of the auxiliary side wall 8. Is different. Since the other configuration is the same as that of the first embodiment, the redundant description is omitted, and the same components are denoted by the same reference numerals for clarification.

  In the second embodiment, as in the first embodiment, since the entire area of the flexible spring portion 10 is covered with the ceiling wall 6, the member does not enter the box portion 2 from the ceiling wall 6 side, The combination part of the box part 2, ie, the combination part of the main side wall part 7 and the auxiliary side wall part 8, is difficult to be deformed. From the above, it is possible to sufficiently protect the bending spring portion 10 so that the box portion 2 does not cause a decrease in function.

  In particular, in the second embodiment, since the locking projection 13 of the thin projection 8a of the auxiliary side wall 8 enters the locking hole 12 of the thin projection 7a of the main side wall 7, compared with the first embodiment. Thus, there is an effect that the combined portion of the box portion 2, that is, the combined portion of the main side wall portion 7 and the auxiliary side wall portion 8 can be further reliably prevented from being deformed.

1A, 1B Female terminal (terminal)
2 Box part 3 Bottom wall 4, 5 Side wall 6 Ceiling wall 6a Free end support part 7 First side wall part 7a, 8a Thin wall part 8 Second side wall part 10 Deflection spring part 12 Locking hole 13 Locking protrusion 20 Male terminal (Mating terminal)

Claims (4)

A box part in which a bottom wall, a pair of side walls and a ceiling wall are integrally formed from a single plate, and one end supported by the box part, and a bending spring part disposed in the box part,
In the terminal where the mating terminal is arranged in the box part in a state where the flexing spring part is flexibly deformed, and the flexing spring part is brought into contact with the mating terminal as a return load,
The ceiling wall covers the entire region from the support portion to the tip of the bending spring portion to the box portion,
One said side wall is comprised from the 1st side wall part integrally provided via the bending part from the said bottom wall, and the 2nd side wall part integrally provided via the bending part from the said ceiling wall. And both the upper end side of the first side wall part and the lower end side of the second side wall part are respectively formed on thin projections having a thin wall thickness, and the thin projections are arranged to overlap each other. Terminal characterized by. The terminal according to claim 1,
The bending spring portion is integrally extended from one of the bottom wall and the ceiling wall, and is connected to a supporting portion of the bending spring portion within the first side wall portion and the second side wall portion. A terminal characterized in that the thin protrusion on the side wall side is disposed on the inner surface side. The terminal according to claim 1 or claim 2, wherein
A locking hole is formed in one of the both thin projections, and a locking projection inserted into the locking hole is provided in the other of the thin projections. Terminal to be used. The terminal according to any one of claims 1 to 3,
The bending spring portion is formed with a free end at the tip,
The terminal, wherein the ceiling wall is provided with a free end support portion that regulates displacement of a tip of the bent spring portion that has been bent and deformed.

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