JP3259812B2 - Terminal fittings for waterproof connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fitting for a waterproof connector which is used by attaching a rubber plug to a waterproof connector.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional terminal fitting 21 of a rubber stopper mounting type. The terminal fitting 21 has an electric contact portion 23 in front of a substrate 22 and a type in which a rubber plug 25 and an electric wire 26 are simultaneously caulked to an electric wire connecting portion 24 on the rear side. Several types of wires 26 of different sizes
₁ , 26 ₂ , 26 ₃ … are used by crimping. Note that 24
a is a conductor crimping piece of the electric wire connection part 24, 24b is an insulator crimping piece, and the rubber stopper 25 has a structure in which a small-diameter terminal connection cylinder part 25c protrudes from a large-diameter seal part 25b having an electric wire insertion hole 25a. is there.

As shown in FIG. 5, when crimping an electric wire 26, a bottom wall Ga of a conductor crimping piece 24a of a terminal fitting 21 is formed.
The reference of the bottom wall Gb insulator crimping piece 24b is because using a wire 26 _1, 26 _2, 26 ₃ of different sizes while fixing, the crimping pieces 24a, the crimp height of 24b vary by size. For example, if the standard electric wire for the terminal fitting 21 is the electric wire 26 ₂ , and 1/2 of the crimp height is h, the small-diameter electric wire 26 ₁ is as low as h ₁ and the large-diameter electric wire 26
In ₃ as high as h _3. As a result, the center line (axis) of the terminal fitting 21 does not coincide with the center of the rubber plug 25.

Therefore, the terminal fitting 2 having the rubber stopper 25 attached thereto
As shown in FIG. 6, when the connector 1 is inserted into the terminal accommodating chamber 28 from the rear of the connector housing 27, depending on the size of the electric wire, the axis P of the terminal fitting 21, that is, the center line P of the terminal accommodating chamber 28 or the rubber plug accommodating section 29 at the rear. And the center of the rubber stopper 25 is shifted. For this reason, the pressing force of the rubber stopper 25 against the upper surface and the lower surface of the inner wall of the storage portion becomes uneven, and the electric wire 26
It becomes impossible to obtain a uniform sealing property against runout. In the above, the terminal fitting 21 is of a female type, and the electrical contact portion 23 has a cylindrical receiving portion 23a for receiving a mating terminal, and an elastic tongue 23b folded back from the substrate 22 into the receiving portion. However, the same applies to the case where a rubber stopper is attached to the male terminal fitting 21 'shown in FIG.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and when a wire of a different size is crimped together with a rubber stopper to a terminal fitting, the center of the rubber stopper is always fixed to the terminal. An object of the present invention is to provide a terminal fitting for a waterproof connector that can be fixed so as to be coincident with the axis of the fitting and can obtain uniform sealing properties.

[0006]

In order to achieve the above-mentioned object, the present invention provides a method of forming a large-diameter semiconductor device comprising: form connecting the wire connection portion to the other of the substrate with a rubber stopper having a sealing portion and a small-diameter terminal connecting tube portion for extrapolated lines, the
A pair of conductor pressures formed by the electric wire connection portion being erected from the substrate.
An attachment piece, and a pair of holding pieces with respect to the terminal connection tubular portion.
In the terminal fitting for a waterproof connector, the pair of holding pieces
Are both punched portions formed by punching the substrate in the longitudinal direction.
Side, and each holding piece protrudes on both upper and lower sides of the punched portion.
A pair of ear pieces that can be extended to hold the terminal connection tube portion.
It is characterized by having. In addition, the waterproof core according to claim 1
In connector terminal fitting, the pair of clamping pieces, characterized in that they are made upright continuous in from the substrate so as to face or staggered as described in claim 2, 3
And

According to the first aspect of the present invention, the connection structure between the terminal fitting and the rubber plug is a pair of holding pieces formed by punching a small-diameter terminal connecting cylinder portion of the rubber plug through a punched portion, that is, a pair of holding pieces having no fixed wall. Is fixed by sandwiching it from the side with the holding piece. Therefore, by adjusting the holding position of the rubber plug according to the size of the electric wire, the center of the rubber plug can be aligned with the axis of the terminal fitting. Thus, when the terminal fitting with the rubber stopper is inserted into the terminal accommodating chamber, the sealing portion of the rubber stopper uniformly and elastically contacts the entire inner wall of the rubber stopper accommodating portion, so that a uniform sealing property can be obtained. Claims 2 and 3 wherein the pair of holding pieces are not directly connected via the punched portion of the substrate.
As shown in the above, any of opposing structures or alternate structures may be used.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 1 denotes a female terminal fitting formed by pressing and bending a conductive metal plate. An electrical contact portion 3 having a known structure is coupled to the front of a substrate 2 and to the rear. The electric wire connection part 4 is coupled, and the electric wire 26 is connected and fixed to the electric wire connection part 4 together with the rubber stopper 25.

The electric wire connecting portion 4 is composed of a pair of conductor crimping pieces 5 and 5 erected from the substrate 2 in a wing shape, and a pair of holding pieces 6 and 6 ′ also coupled from the substrate 2. One holding piece 6 is formed in a substantially S shape from an upper piece 6a and a lower piece 6b, and the other holding piece 6 'is formed in a substantially inverted S shape from a lower piece 6a' and an upper piece 6b '. 6, 6 'are alternately opposed shapes as a whole. These holding pieces 6,
Reference numeral 6 'denotes a punched portion 7 provided on the substrate 2 as shown in the developed view of FIG. 1C, leaving connecting pieces 8, 8' on both sides, and an ear piece 6a extending to one side from these connecting pieces 8, 8 '. , 6a 'and the ear pieces 6b, 6b' extending to the other side, and are formed by erecting the connecting pieces 8, 8 'around the substrate 2.

FIG. 3 shows a rubber plug 25 and an electric wire 26 (26 _{1) of a} different size using the terminal fitting 1 for a waterproof connector according to the present invention.
To 26 ₃ ) are simultaneously connected and fixed. That is, the bottom wall Ga of the conductor crimping piece 5 is constant, as described above, even though the wire size differs. However, since the pair of holding pieces 6, 6 'for the small-diameter terminal connecting tube portion 25a of the rubber plug 25 have no bottom, so to speak, by the punching portion 7, they are not affected by the fixed wall such as the bottom wall Gb in FIG. The terminal connection tube 25a can be held from both sides. Therefore, the center of the rubber stopper 25 can always be aligned with the axis P of the terminal fitting 1 or the terminal accommodating chamber 28.

[0011]

As described above, according to the present invention,
The invention according to claim 1 is an electric wire in which an electrical contact portion for mating terminal fittings is coupled to one of the substrates, and a rubber plug having a large-diameter seal portion and a small-diameter terminal connection tube portion is extrapolated to the other side of the substrate. In the terminal fitting for a waterproof connector in which a wire connecting portion is coupled to the pair, the wire connecting portion is a pair of conductor crimping pieces that are erected in a wing shape from the substrate and the conductor that is erected from the substrate via a punched portion. Since it has a configuration consisting of a pair of holding pieces with respect to the terminal connecting cylinder, the rubber plug into which the wire is inserted is held from the side by the pair of holding pieces, and the rubber plug is held by the pair of holding pieces according to the wire size. By adjusting the position, the center of the rubber stopper can be aligned with the axis of the terminal fitting, and a uniform seal can be obtained.

[Brief description of the drawings]

FIG. 1A is a front view showing an embodiment of a terminal fitting for a waterproof connector according to the present invention, FIG. 1B is a plan view thereof, and FIG.

FIG. 2 is a perspective view of the same rubber plug mounted state.

FIG. 3 is an explanatory diagram of the electric wire size and the mounting state of a rubber plug according to the first embodiment.

FIG. 4 is an explanatory view of a conventional terminal fitting for a waterproof connector.

FIG. 5 is an explanatory view of a crimped state of the electric wire and the rubber plug according to the first embodiment.

FIG. 6 is an explanatory diagram of an inserted state in the connector of the above.

FIG. 7 is a perspective view of a conventional male waterproof connector terminal fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal fitting 2 Substrate 3 Electric contact part 4 Electric wire connection part 5 Conductor crimping piece 6, 6 'Nipping piece 7 Punched part 25 Rubber stopper 25b Seal part 25c Terminal connection cylinder part 26 Electric wire

Claims (3)

(57) [Claims] An electric contact portion for connecting to a mating terminal fitting is formed on one side of a substrate, and an electric wire connection portion for an electric wire having a rubber plug provided with a large-diameter seal portion and a small-diameter terminal connection tube portion is provided. Coupled to the other side of the board, and the wire connection is formed from the board.
A pair of vertically-coupled conductor crimping pieces and
A terminal fitting for a waterproof connector having a pair of holding pieces , wherein the pair of holding pieces are formed by punching the substrate in a longitudinal direction.
Formed on both sides of the punched part, each holding piece
Projecting on both upper and lower sides of the part can hold the terminal connection tube part
A terminal fitting for a waterproof connector, comprising a pair of ear pieces . 2. A waterproof connector terminal fitting according to claim 1, wherein said pair of clamping pieces are made upright communicating from the substrate to face. 3. A waterproof connector terminal fitting according to claim 1, wherein said pair of clamping pieces are made upright communication from alternately the substrate.