JP2921631B2 - Screw-type connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw-type connector for connecting terminals to each other by screwing a tightening ring having a female screw portion provided on one connector to a male screw portion of a mating connector. is there.

[0002]

2. Description of the Related Art Referring to FIG.
Is a cylindrical housing d made of a synthetic resin in which a terminal accommodating chamber b is penetrated and a flexible locking claw c is provided on an outer peripheral portion.
A metal or synthetic resin tightening ring e which is press-fitted into the flexible locking claw c and is rotatably and disassembled outside the housing d; A sealing ring f, a female terminal g inserted into the housing d, a rubber plug i inserted through an electric wire h crimp-connected to the female terminal g, and fastened to the female terminal g; A synthetic resin rear holder j that engages with the rear end of the housing d in a state where the female terminal g and the rubber stopper i are inserted into the terminal accommodating chamber b of the housing d;
And a rear cover k for covering the rear part of the cable and leading out the electric wire h.

Reference numeral 1 denotes a connector part of the electrical unit m for connecting the screw-type connector a. A male terminal n is erected on the surface and a fastening ring e is attached to a male screw part o formed on the outer periphery of the connector part l. Screw the female screw part p of
The opposite female and male terminals g and n are connected to each other (FIG. 6).
reference).

[0004]

In the above prior art, even if the specifications (shape, number of poles, pitch, etc.) of the female and male terminals are common, the connection specifications between the housings are not common. In such a case, it is necessary to prepare a plurality of types of screw-fastened connectors on the side where the connector unit is attached and detached in accordance with the size of the connector unit in the electrical unit.

The present invention pays attention to this point and applies an attachment to a screw-type connector so that a single screw-type connector can be used to connect to a large or small mating connector.

[0006]

In order to achieve the above object, according to the present invention, a fastening ring having an internal thread portion is provided rotatably on an outer peripheral portion of a connector housing, and the fastening ring is connected to a mating connector. An inner peripheral portion of a connection attachment that is screwed to the female screw portion in a screw-fastened connector that is screwed into a male screw portion of the housing to connect a pair of terminal fittings provided inside the connector housing to face each other. A female screw portion having a smaller diameter than the female screw portion.

[0007]

When the tightening ring is rotated, the female screw portion of the attachment is screwed into the male screw portion of the mating housing to connect the pair of connectors and connect the terminal fittings facing each other.

[0008]

EXAMPLES 1 and 2 show a screw fastening type connector A, inside the ring A ₂ Tightening of metal or synthetic resin having a female screw portion 1 is flexible in the outer circumferential portion of the synthetic resin connector housing A ₁ It is rotatably provided by being locked by the locking claw 2. A female terminal 5 previously connected to the electric wire 4 is inserted into the terminal accommodating chamber 3 of the connector housing A ₁ and is locked by the flexible locking piece 6.

A connection attachment B having an M27 external thread portion 7 on the outer peripheral portion and an M24 internal thread portion 8 on the inner peripheral portion is screwed to the M27 internal thread portion 1 of the tightening ring A ₂ . I have. The connector housing C ₁ of the electric unit 9, the male terminal 10 is erected on the surface, the male screw portion 11 of the M24 in the outer peripheral portion
Are formed.

Therefore, by turning the tightening ring A ₂ and screwing the female screw 8 of the connection attachment B into the male screw 11 of the connector housing C ₁ , the screw-type connector A is connected to the electrical unit 9. can be connected a female, the male terminals 5,10 are attached to the connector housing C _1. A hexagonal flange 12 for driving is formed on the outer periphery of the attachment B for connection.

[0011] In FIG. 4, the connector housing C ₂ of the surface of the electrical unit 9, the same shape as the connector unit C _1, number of poles, although the male terminal 10 of the pitch is erected,
An M27 male screw portion 11 'is formed on the outer peripheral portion.
Thus, without using the connection bracket B in this case, by screwing in the female screw portion 1 of the clamping ring A ₂ directly male threaded portion 11 ', screwing connector A
The connection to the connector housing C ₂ of the electric unit 9.

[0012]

As described above, according to the present invention, a fastening ring having an internal thread portion is provided rotatably on the outer peripheral portion of the connector housing, and the fastening ring is screwed to the male thread portion of the mating connector housing. In the screw tightening type connector for connecting a pair of terminal fittings provided inside the connector housings facing each other, the inner diameter of the connection attachment screwed to the female screw portion is smaller than the female screw portion. Since the female screw portion is formed, a single screw-type connector can be connected to a plurality of large and small mating connectors, which is also beneficial in parts management, and is economical. Bring effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a screw-type connector of the present invention.

FIG. 2 is a longitudinal sectional view showing a connection state of the above.

FIG. 3 is a side view of a connection attachment.

FIG. 4 is a perspective view showing another connection state.

FIG. 5 is a longitudinal sectional view showing a state before connection of a conventional screw-type connector.

FIG. 6 is a longitudinal sectional view showing a state after connection according to the first embodiment;

[Explanation of symbols]

A Screw-type connector A ₁ Connector housing A ₂ Tightening ring B Connection attachment C ₁ , C ₂ Mating connector housing 1 Female thread 8 Small diameter female thread

────────────────────────────────────────────────── ─── Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/56-13/72

Claims (1)

(57) [Claims] An outer peripheral portion of a connector housing is provided with a rotatable tightening ring having a female screw portion therein, and the tightening ring is screwed to a male screw portion of a mating connector housing to face both connector housings. And a female screw part having a smaller diameter than the female screw part is formed on an inner peripheral part of a connection attachment screwed to the female screw part. A screw-type connector characterized by the above-mentioned.