JP2001110506A - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector which can realize individual waterproofing without enlarging sealed area and excels in attachment and removal. SOLUTION: In order to seal a pair of contacts led individually when a plug housing assembly and a cap housing are fit in together, a contact mounted on the former and the one on the latter being electrically connected with each other, a convex section is provided on the part corresponding to each contact of the surface of a seal plate of the former, being integrated with the seal plate, and on the bottom of the plug housing body is provided a concave section which is in close contact with the convex section. In addition, in the plug housing body a locking plate is tightly fit in the concave section, being interposed between a bushing and the seal plate mounted in the plug housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector for use in, for example, a wire harness of an automobile, and more particularly to a waterproof connector of a type for individually waterproofing contacts.

[0002]

2. Description of the Related Art As a waterproof connector of this type, there is known a type in which a housing assembly of each of a male and a female is waterproofed and fitted. As means for waterproofing, there has been a method of group waterproofing in which a plurality of terminals are sealed together or a method of single-pole waterproofing (individual prevention) in which terminals are individually sealed.

[0003]

However, the group waterproof type has a disadvantage that when water is immersed inside the sealing member, all terminals are electrically connected to each other to cause a short circuit or electrolytic corrosion. Has excellent waterproof properties,
The contact area between the seal member and the housing is increased, and there is a disadvantage that a large load must be applied to the attachment and detachment of the male and female connectors.

[0004] Single-pole waterproofing is difficult to apply depending on the structure of the connector. For example, in a connector having a means (lance or the like) for holding a terminal in a housing, a conventional single-pole waterproofing means (for example, The waterproofing means disclosed in Japanese Utility Model Laid-Open No. 2-5888 could not be applied as it is.

An object of the present invention is to solve the above-mentioned disadvantages of the conventional waterproof connector.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plug housing assembly having a plurality of first type contacts mounted thereon, the plug housing assembly being fitted with the plug housing assembly, and And a cap housing assembly mounted with a plurality of second type contacts electrically connected to the first type of contacts. The plug housing assembly further includes a plug housing body provided with a recessed portion. , A bushing and a first seal plate closely fitted to the recess, and a locking plate, wherein each of the contacts of the first type is connected to the plug contact body via the first seal plate and the locking plate. Wherein the locking plate holds a first type of contact present in the recess Rutotomoni, the bushing and the first
The cup housing assembly is mounted in the recess while being sandwiched between the seal plate and the cap plate. The cup housing assembly further includes a cap housing body having a cavity for receiving the plug housing assembly, and a second housing fitted into the cavity. Wherein the second mold contacts each extend through the bottom of the cavity and the second seal plate and into the cavity, and the plug housing assembly and the cap housing are fitted. In addition, when the first type contact and the second type contact are electrically connected to each other, the second type contact is sealed such that the first and second type contact pairs are individually sealed. A convex portion is provided integrally with the seal plate at a position corresponding to each contact on the surface of the seal plate, It provided a concave portion for Mitsugo and the convex portion on the bottom surface of the lug housing body, to provide a waterproof connector.

[0007]

FIG. 1 shows a use state of a waterproof connector according to an embodiment of the present invention.

[0008] The waterproof connector of the present invention comprises a plug housing assembly 10 and a cap housing assembly 20 which is fitted with the plug housing assembly. The plug housing assembly mounts a plurality of first type contacts 11 (in the illustrated embodiment, socket contacts) and the cap housing assembly mounts a plurality of second type contacts 21 (in the illustrated embodiment, pin contacts). Implement When the two housing assemblies are fitted, the first type contacts and the second type contacts are electrically connected to each other.

FIGS. 2 and 3 show details of the plug housing assembly of the waterproof connector shown in FIG.

[0010] The plug housing assembly includes the first housing.
, A plug housing body 12 (socket insulator) provided with a recess 12A, a bushing 13 and a first seal plate 14 which are fitted into the recess in a sealed state, and a locking plate 15. Become.

Each of the contacts of the first type is mounted on the plug contact body via a first seal plate and a locking plate. Specifically, the first type of contact that terminates the wire 30 passes through the through holes formed in each of the bushing, the locking plate, and the first seal plate, and is inserted into the storage hole 12B provided in the plug housing body. To store.

The bushing holds the wire terminated by the first type of contact, covers the top and the peripheral surface of the locking plate, and sandwiches the locking plate between the first seal plate. The plug housing body fits tightly into the recessed portion.

The locking plate has a lance 15A for receiving and holding each of the first type of contacts, and the first seal plate has a through hole for receiving each of the lances.

A concave portion 12C for tightly fitting with a convex portion 23A of a second seal plate, which will be described later, is provided in an opening on the bottom surface side of the contact housing hole provided in the plug housing body.

FIGS. 4 and 5 show details of the cap housing assembly of the waterproof connector shown in FIG.

The cap housing assembly includes the second type of contact, a cap housing body 22 having a cavity 22A for receiving the plug housing assembly, and a second seal plate 23 fitted into the cavity. In the illustrated embodiment, the second seal plate is configured to engage with a convex shape provided on the inner wall surface of the cavity.

The contacts of the second type are provided so as to protrude into the cavity through through holes respectively formed in the bottom of the cavity and the second seal plate.
At the bottom of the cavity, a convex portion 22B is provided at a position corresponding to each contact, and a concave portion 23B that fits with the convex portion is provided on the back surface of the second seal plate.

On the surface of the second seal plate, a projecting portion 23A is provided integrally with the seal plate in a through-hole portion through which each contact penetrates.

This convex portion is formed when the plug housing assembly and the cap housing are fitted to each other to electrically connect the first type contact and the second type contact.
A concave portion 12C provided at the bottom of the plug housing body
To individually seal the first and second type of contact pairs, respectively.

In the illustrated embodiment, a seal lip is provided on the peripheral surface of the convex portion to improve waterproofness.

[0021]

The configuration of the present invention is as described above.
From the configuration, the following specific effects can be obtained.

In the waterproof connector of the present invention, a convex portion is provided integrally with the seal plate at each contact portion on the surface of the second seal plate.
A concave portion is provided which closely fits the convex portion, and the locking plate is closely fitted in the concave portion of the plug housing body while being sandwiched between the bushing and the first seal plate. Therefore, when the plug housing assembly and the cap housing are fitted to each other to electrically connect the first type contacts and the second type contacts,
The first and second types of contact pairs are each sealed.

That is, according to the present invention, in each of the plug housing assembly and the cap housing assembly, each terminal is waterproofed in advance, and when fitting the two housing assemblies, the concave portion and the convex portion provided respectively are provided. Are merely fitted, so that individual waterproofing can be achieved without particularly increasing the seal area, so that the operability of attaching and detaching is sufficiently ensured.

Further, according to the structure of the present invention, even if the connector has means (lance or the like) for holding the terminal in the housing, the terminal can be individually sealed.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a fitted state of a prevention connector according to an embodiment of the present invention.

FIG. 2 is a partially broken perspective view showing a plug housing assembly of the waterproof connector shown in FIG. 1;

FIG. 3 shows an exploded view of the plug housing assembly shown in FIG.

FIG. 4 is a partially cutaway perspective view showing the cap housing assembly of the waterproof connector shown in FIG. 1;

5 shows an exploded view of the cap housing assembly shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Plug housing assembly 11 1st type contact 12 Plug housing main body 12A Depression 12B Storage hole 12C Concave portion 13 Bushing 14 First seal plate 15 Locking plate 20 Cap housing assembly 21 Second type contact 22 Cap housing Main body 22A Cavity 23 Second seal plate 23A Convex portion

Claims (5)

[Claims] 1. A plug housing assembly on which a plurality of first type contacts are mounted, and the plug housing assembly is fitted with the plug housing assembly and electrically connected to the plurality of first type contacts, respectively. A plug housing assembly 20 on which a plurality of second type contacts 21 are mounted. The plug housing assembly further comprises a recess 12
A, a bushing 13 and a first seal plate 1 which are tightly fitted in the recess.
4 and a locking plate 15, wherein each of the first type contacts is mounted on the plug contact body via a first seal plate and a locking plate, and the locking plate is present in the recessed portion. First
And the cap housing assembly is mounted in the recess while being held between the bushing and the first seal plate. The cap housing assembly further includes a cavity 22A for receiving the plug housing assembly.
And a second seal plate 23 fitted into the cavity. The contacts of the second type penetrate through the bottom of the cavity and the second seal plate, respectively. When the plug housing assembly and the cap housing are fitted to each other to electrically connect the first type contacts and the second type contacts, the first and second types of contacts are formed. A convex portion 23A is provided integrally with the seal plate at a position corresponding to each contact on the surface of the second seal plate so that the contact pairs of the mold are individually sealed. A waterproof connector provided with a concave portion 12C which is in close contact with the convex portion. 2. The waterproof connector according to claim 1, wherein the bushing covers a top and a peripheral surface of the locking plate, and the bushing is connected to the first plate.
A watertight connector, wherein the watertight connector is tightly fitted in the recessed portion of the plug housing body while being sandwiched together with the seal plate. 3. The waterproof connector according to claim 1, wherein the locking plate has a lance 15A for receiving and holding each of the contacts of the first type, and the locking plate has a lance 15A. The seal plate is
A waterproof connector having a through hole (14A) for receiving each of the lances. 4. The waterproof connector according to claim 1, wherein the cap housing body is provided with a convex portion 22B at a position corresponding to each contact at the bottom of the cavity, and the second seal plate is provided. On the back of
A waterproof connector comprising a concave portion 23B fitted with the convex portion. 5. The waterproof connector according to claim 1, wherein the first type of contact is a receptacle contact, and the second type of contact is a pin contact. , Waterproof connector.