JP2000077130A - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve waterproofness and assembling property. SOLUTION: After an electric cable 5 is inserted through a cable insertion hole 6b of a seal member 6, the cable 5 is brought into pressure-contact with a pressure contact blade 7a of a pressure contact terminal 7, and simultaneously, an end part of the seal member 6 is fixed by barrels 7b. Then, the seal member 6 is inserted into a hole 8b for a plug with insertion of the pressure contact terminal 7 into a cavity of a housing 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, in a terminal, particularly a press contact terminal 1, after a press contact terminal 1 is accommodated in a cavity 2b from an upper opening 2a of a housing 2, an electric wire 3 is connected to the press contact terminal 1. There is one in which the upper surface opening 2a of the housing 2 is closed with a cover 2c after the pressure contact (first prior art).

[0005] As shown in FIG. 8, after the end of the electric wire 3 is pressed against a press contact terminal (a crimp terminal is also possible), the press contact terminal 1 is forcibly inserted into an insertion hole 4 a of a plug-shaped seal member 4. While inserting the electric wire 3 while inserting the pressure contact terminal 1 into the cavity 2b of the housing 2, the sealing member 4 is inserted into the plug insertion hole 2d (second conventional technique). As shown in FIG. 9, there is a type in which the press contact terminal 1 is pressed against the end of the wire 3 after the wire 3 is inserted through the insertion hole 4a of the plug-shaped seal member 4 (third conventional technique).

[0004]

However, in the first prior art, the number of parts is increased because the cover 2c is required, and when the cavity 2b has multiple stages, the housing 2 also has a multi-stage block structure. The score increases. In addition, there is a problem that a waterproof structure is not provided because there is a gap between the housing 2 and the cover 2c.

In the second prior art, the press contact terminal 1
Is forcibly inserted into the insertion hole 4a of the seal member 4, so that the insertion operation is difficult, and there is a problem that the insertion hole 4a is damaged and the waterproof property is deteriorated. In the third prior art,
Although the problem of the second prior art is solved, after the electric wire 3 is inserted through the insertion hole 4a of the seal member 4, the electric wire 3
Since the pressure contact terminals 1 are press-contacted to the ends of the wires, there is a problem that the electric wires 3 cannot be pressure-contacted to a large number of pressure contact terminals 1 at a time.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a waterproof connector having improved waterproofness and assemblability.

[0007]

In order to solve the above problems, according to the first aspect of the present invention, a plug-shaped seal member having an electric wire insertion hole through which an electric wire can be inserted, and an electric wire insertion hole of the seal member are provided. A press-contact terminal having a press-contact blade for press-contacting the end of the inserted wire and a barrel for fixing the end of the seal member, a cavity for inserting the press-contact terminal, and a plug hole into which the seal member can be inserted. And a housing having the same.

According to the first aspect, after the electric wire is inserted through the electric wire insertion hole of the seal member, the electric wire is pressed against the press-contact blade of the press-connecting terminal, and the end of the seal member is fixed with the barrel. Insert the sealing member into the plug hole while inserting the press contact terminal into the cavity.

According to a second aspect of the present invention, there is provided a flexible sealing member having an insertion hole having the same or slightly larger outer shape as the terminal fixed to the end of the electric wire, and a terminal having the insertion hole of the sealing member inserted therethrough. A housing having a cavity for inserting the seal member and a pressing portion for expanding and deforming the seal member in the inner and outer radial directions by pressing the seal member in the thickness direction so as to bring the insertion hole of the seal member into close contact with the outer periphery of the electric wire. And a waterproof connector.

According to the second aspect, after the terminal fixed to the electric wire is inserted into the insertion hole of the seal member and inserted into the cavity of the housing, and the seal member is pressed by the pressing portion of the housing, the seal member is moved in the inner and outer radial directions. Then, the insertion hole of the seal member comes into close contact with the outer periphery of the electric wire.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 3 show a first embodiment. As shown in FIG. 1, a plug (cylindrical) rubber seal member 6 having an electric wire insertion hole 6a through which the electric wire 5 can be inserted is provided. The electric wire insertion hole 6a is set to an inner diameter that allows the electric wire 5 to be inserted smoothly and that can be tightly sealed to the outer periphery of the electric wire 5 in a watertight manner.

As shown in FIG. 2A, the end of the electric wire 5 inserted through the electric wire insertion hole 6a of the seal member 6 is shown in FIG.
As shown in (b), the pressure contact is performed by the pressure contact blade 7a of the pressure contact terminal 7. The small-diameter end 6b of the seal member 6 is fixedly wound around the barrel 7b of the press contact terminal 7. The order before and after the pressing and winding may be any order.

On the other hand, as shown in FIG. 3, the connector housing 8 has a cavity 8a into which the press contact terminal 7 is inserted, and a plug hole 8b into which the sealing member 6 can be inserted.

When the waterproof connector according to the first embodiment is constructed as described above, first, after the electric wire 5 is inserted into the electric wire insertion hole 6a of the sealing member 6, the electric wire 5 is pressed against the press contact blade 7a of the press contact terminal 7. At the same time, the small-diameter end 6b of the seal member 6 is wound and fixed with the barrel 7b.

Thereafter, the sealing member 6 is inserted into the plug hole 8b while the press contact terminal 7 is inserted into the cavity 8a of the connector housing 8 from the plug hole 8b.

Thus, outside the connector housing 8, the electric wire 5 is inserted into the electric wire insertion hole 6a of the seal member 6, and then the electric wire 5 is pressed by the press contact blade 7a of the press contact terminal 7, and the seal member 6 is fixed by the barrel 7b. Then, since the sealing member 6 is inserted into the plug hole 8b while inserting the press-contact terminal 7 into the cavity 8a of the connector housing 8, the cover as in the first prior art is not required, and the number of parts can be reduced. Since the connector housing 8 does not form a multi-stage block even when the cavities 8a are multi-stage, the number of parts does not increase.

Further, since the sealing member 6 is inserted and sealed in the plug hole 8b for inserting the press contact terminal 7 into the cavity 8a of the connector housing 8, a complete waterproof structure is obtained.

FIGS. 5 to 7 show a second embodiment. As shown in FIG. 5, a press contact terminal 7 is connected to the end of the electric wire 5 by press contact and fixed. Note that a crimp terminal may be used instead of the press contact terminal 7.

Further, a disk-shaped rubber sealing member 9 is provided to form an insertion hole 9a which is the same as or slightly larger than the outer shape of the press contact terminal 7. This seal member 9 has great flexibility, and as shown in FIG.
When it is pressed in the radial direction, it expands and deforms in the inner and outer radial directions B and C.

On the other hand, as shown in FIG. 6, the connector housing 10 has a cavity 10a into which the pressure contact terminal 7 is inserted.
And an insertion hole 10b into which the press contact terminal 7 can be inserted, and a pressing plate 12 having an insertion hole 12a corresponding to the insertion hole 10b and movable in the wire direction by screws 11 is provided. .

When the waterproof connector of the second embodiment is configured as described above, first, after the press contact terminal 7 is fixed to the electric wire 5, the press contact terminal 7 and the electric wire 5 are inserted into the insertion hole 12 a of the pressing plate 12. The press contact terminal 7 and the electric wire 5 are inserted through the insertion hole 9 a of the seal member 9.

After inserting the press contact terminal 7 into the cavity 10a of the connector housing 10 through the insertion hole 10b, the screw 11 of the pressing plate 12 is screwed into the female screw hole 10c of the connector housing 10, as shown in FIG. 6B, when the sealing member 9 is pressed between the pressing plate 12 and the connector housing 10 in the thickness direction A, the sealing member 9 is expanded and deformed in the inner and outer radial directions B and C, and the sealing member is sealed. The insertion hole 9a of the member 9 comes into close contact with the outer periphery of the electric wire 5.

As a result, the pressure contact terminal 7 can be inserted into the large insertion hole 9a before the seal member 9 is pressed, so that it is not necessary to forcibly insert the terminal as in the second prior art. Work becomes easier.

The press contact terminal 7 is connected to the connector housing 1.
After the insertion into the cavity 10a, the sealing member 9 is expanded and deformed by pressing the sealing member 9 between the connector housing 10 and the pressing plate 12, and the insertion hole 9a is brought into close contact with the outer periphery of the electric wire 5, so that , Complete waterproof structure.

Further, since the press-connecting terminal 7 can be press-fixed to the electric wire 5 before being inserted into the insertion hole 9a of the seal member 9,
Unlike the third prior art, a large number of insulation displacement terminals 7 are connected to each wire 5
Can be pressed and fixed collectively, and the press-fixing workability is improved. When such a large number of press contact terminals 7 are used, as shown in FIG.
The seal member 9 formed with a can be adopted.

In the above embodiment, the screw 11 is used for pressing the pressing plate 12. However, a locking claw is formed on the pressing plate 12, and the locking claw is formed on the connector housing 10 while pressing the seal member 9. The seal member 9 may be pressed by engaging with the lock hole. Also, the pressing plate 12 is made into a cap shape,
By screwing the female screw of this cap-shaped pressing plate 12 into the male screw formed on the connector housing 10,
The seal member 9 may be pressed.

In each embodiment, each of the seal members 6, 9 is connected to the holes 8b, 10 of the connector housings 8, 10.
The sealing member 6 and 9 are inserted into the holes of the panel instead of the grommets to seal them.

[0029]

As is clear from the above description, in the waterproof connector according to the first aspect of the present invention, after the electric wire is inserted through the electric wire insertion hole of the seal member, the electric wire is pressed against the press contact blade of the press contact terminal. At the same time, the end of the seal member was fixed with the barrel, and then the seal member was inserted into the hole for the plug while inserting the press contact terminal into the cavity of the housing. After inserting the electric wire, pressing the electric wire with the press contact blade of the press contact terminal and fixing the seal member with the barrel, and then inserting the seal member into the plug hole while inserting the press contact terminal into the cavity of the housing. Since the cover as in the prior art is not required, the number of parts can be reduced, and even if the cavity is formed in multiple stages, the housing does not become a multi-stage block. Score no longer increases.

Further, since a sealing member is inserted and sealed in the plug hole for inserting the press contact terminal into the cavity of the housing, a complete waterproof structure is obtained.

According to a second aspect of the present invention, when the terminal fixed to the electric wire is inserted into the insertion hole of the seal member and inserted into the cavity of the housing, the seal member is pressed by the pressing portion of the housing. Is expanded and deformed in the inner and outer radial directions so that the insertion hole of the seal member comes into close contact with the outer periphery of the electric wire. Therefore, the terminal is inserted into the insertion hole having the same or slightly larger outer shape as the terminal of the seal member. It is not necessary to forcibly insert the terminal unlike the prior art, and the insertion work becomes easy.

After the terminal is inserted into the cavity of the housing, the sealing member is pressed by the pressing portion of the housing, whereby the sealing member is expanded and deformed, and the insertion hole is brought into close contact with the outer periphery of the electric wire. Structure. Furthermore, since the terminals can be fixed (press-contact or crimping) to the electric wire before being inserted into the seal member, a large number of terminals can be collectively fixed to each electric wire unlike the third related art, and fixing workability is improved. Become good.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a waterproof connector according to a first embodiment of the present invention.

FIG. 2A is a perspective view of a seal member through which an electric wire is inserted, and FIG. 2B is a perspective view of a press-contact terminal pressed against the electric wire.

FIG. 3A is a perspective view of a waterproof connector, and FIG. 3B is a cross-sectional view of the waterproof connector.

FIGS. 4A and 4B are exploded perspective views, and FIG. 4B is an assembled perspective view of a connector according to a first prior art.

FIG. 5 is a waterproof connector according to a second embodiment, in which (a)
FIG. 3 is a perspective view before inserting the terminal into the sealing member, FIG. 2B is a perspective view after inserting the terminal into the sealing member, and FIG. 2C is a perspective view of the sealing member in an expanded and deformed state.

FIG. 6A is a cross-sectional view of a sealing member before expansion deformation.
(B) is a cross-sectional view of the seal member after the expansion deformation.

FIG. 7 is a perspective view of a modification of the seal member.

8A and 8B are perspective views of a connector according to a second related art, in which FIG. 8A is a perspective view before a terminal is inserted into a sealing member, and FIG. 8B is a cross-sectional view after the terminal is inserted into the sealing member.

9A and 9B are perspective views of a connector according to a third related art, in which FIG. 9A is a perspective view before a terminal is inserted into a sealing member, and FIG. 9B is a perspective view after the terminal is inserted into the sealing member.

[Explanation of symbols]

 Reference Signs List 5 electric wire 6, 9 sealing member 6a, 9a electric wire insertion hole 7 press contact terminal 7a press contact blade 7b barrel 8, 10 connector housing 8a, 10a cavity 8b plug hole 12 press plate

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasushi Saito 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Inc. (reference) 5E087 EE12 FF08 FF13 FF14 LL03 LL11 LL12 RR12 RR25 RR29

Claims (2)

[Claims] 1. A plug-shaped sealing member having an electric wire insertion hole through which an electric wire can be inserted, a press-contact blade for pressing an end of an electric wire inserted through the electric wire insertion hole of the sealing member, and an end of the sealing member. A waterproof connector comprising: a pressure contact terminal having a barrel to be fixed; a housing having a cavity for inserting the pressure contact terminal and a plug hole into which the seal member can be inserted. 2. A flexible sealing member having an insertion hole having the same or slightly larger outer shape as a terminal fixed to an end of an electric wire, a cavity for inserting a terminal inserted through the insertion hole of the sealing member, and A waterproof connector comprising: a housing having a pressing portion that presses the seal member in a thickness direction to expand and deform in the inner and outer radial directions to bring the insertion hole of the seal member into close contact with the outer periphery of the electric wire.