JP2570359Y2 - Waterproof 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 waterproof structure for an electric connector used in an automobile or the like.

[0002]

2. Description of the Related Art As shown in FIG. 8, in a conventional waterproof connector, a lead wire b is pierced through a waterproof member c made of waterproof rubber having a hole d through which a lead wire b connected to a terminal a is formed. At the same time, it is loaded into one end of the connector housing e. The flexible locking piece f provided in the terminal accommodating chamber h of the connector housing e constitutes a locking means of the terminal a in cooperation with the engaging portion g of the terminal a, and is provided to the rear of the terminal a. Prevents falling off.

Since the conventional waterproof connector is configured as described above, when the lead wire b is inserted into the hole d of the waterproof member c, the diameter of the terminal a is larger than the diameter of the lead wire b.
After connecting the lead a one by one and then connecting the terminal a,
After connecting the lead wire b and the terminal a, it is necessary to enlarge and insert the hole d using a jig. Either method requires cumbersome work. FIG. 9 shows a conventional waterproof joint connector.
As shown in the figure, the lead wire b 'connected to the female terminal a'
The lead wire b 'is pierced through a waterproof member c' made of waterproof rubber having a through hole d 'formed therein, and a bus bar i is inserted into one end of a connector housing e' integrally formed by insert molding. Things. Since the conventional waterproof joint connector is configured as described above, when the lead wire b 'is inserted into the hole d' of the waterproof member c ', the diameter of the terminal a' is larger than the diameter of the lead wire b '. Lead wire b '
Must be inserted one by one and then the terminal a 'must be connected, or after connecting the lead wire b' and the terminal a ', the hole d' needs to be enlarged and inserted using a jig. Either method requires cumbersome work.

[0004]

DISCLOSURE OF THE INVENTION In view of the above points, in the present invention, when a lead wire is inserted into a waterproof member of a waterproof connector or a waterproof joint connector, the lead wire is inserted one by one and then connected to a terminal or a lead. After connecting the wire and the terminal, there is no need for the troublesome work of enlarging and inserting the hole of the waterproof member using a jig, and the terminal is connected to the lead wire or the terminal of the lead wire is in a solid wire It is an object of the present invention to provide a waterproof connector and a waterproof joint connector having a structure that can be inserted through the connector and does not need to close unnecessary holes of the waterproof member.

[0005]

In order to achieve the above object, according to the present invention, a waterproof member is inserted into a terminal insertion side end of a connector housing, and a lead wire is inserted through the waterproof member. In the waterproof connector, the two sides of the layered silicone gel are sandwiched between films and laminated in a sandwich structure, and both sides of the sandwich structure are provided with a pair of backup plates in which holes for inserting lead wires with terminals are formed. A waterproof member having a configuration held in the above manner, the waterproof member is inserted into the terminal insertion side end of the connector housing, the outer peripheral portion of the sandwich-structured silicon gel is brought into close contact with the inner wall of the connector housing, and the terminal-equipped A lead wire is inserted through the hole of the backup plate and the sandwich structure.

According to a second aspect of the present invention, there is provided a waterproof joint connector in which a waterproof member is inserted into a terminal insertion side end of a connector housing and a lead wire is inserted through the waterproof member. Are sandwiched between films to form a sandwich structure, one side of the sandwich structure is held by a pair of backup plates provided with holes for inserting lead wires, and the other side of the sandwich structure is held. A waterproofing member held by a layered conductive material, the waterproofing member is inserted into the terminal insertion side end of the connector housing, and the outer peripheral portion of the sandwich-structured silicon gel is adhered to the inner wall of the connector housing. Then, the lead wire having the core wire of the terminal stripped is inserted into the hole of the backup plate and the sandwich structure. So, there is a structure in which piercing the conductive material. In addition, it is preferable to use, for example, polyethylene, polyester, vinyl chloride, or the like as the film in the present invention.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a waterproof connector according to the present invention, and FIG. 2 is a longitudinal sectional view of the waterproof connector. FIG. 3 is an enlarged vertical sectional view of a main part of the waterproof member, and FIG. 4 is an exploded perspective view of the waterproof member.
In the waterproof connector A, a waterproof member C having a lead wire E to which a terminal D is connected penetrates is inserted into one terminal insertion side end 1 of a connector housing B (see FIG. 2). A stopper 6 is continuously provided around the inner surface of the one terminal insertion side end 1 of the connector housing B, and a locking projection 8 is continuously provided at an interval substantially equal to the thickness of the waterproof member C. It constitutes a means for holding and locking the position of the waterproof member C. The waterproof member C has a sandwich structure 13 laminated on both sides of a layered silicone gel 2 made of insulating material with a pair of polyethylene films 3 and 3 in a sandwich structure, and further, both sides of the sandwich structure 13 A pair of backup plates 5 and 5 made of synthetic resin having holes 4 through which the terminal fittings D and the lead wires E pass.
(See FIGS. 3 and 4).
Silicone gel 2 in a pair of disc-shaped polyethylene film 3, 3 and the disk layered together with a polyethylene film 3 when press fitting the distal end D ₁ of the terminal fitting D is easily Yabuana, also silicone gel 2 layered Yabuana It is pulled out of the distal end D ₁ of the Suruga terminal fittings D Yabuana portion is cured enough to recover automatically.

[0008] The partition 9 of the connector housing B and the side wall B ₁ of the connector housing B form a housing ₁ for the terminal fitting D.
0 with are provided by the number of terminal fittings D, position holding and engagement of the terminal fitting D with resilient locking pieces 12 to be engaged with the recess 11 of the terminal fitting D is being continuously provided from the partition wall 9 or side wall B ₁ respectively This constitutes a stopping means. Assembling the case, first, the backup plate 5 ₁ hole 4 accommodating chamber 10 of the partition wall 9
It is positioned against per stoppers 6 so as to correspond to, then the backup plate 5 ₁ backup plate 5 ₂ by laminating disc-shaped sandwich structure 13 of a silicon gel 2 of the pair of polyethylene films 3, 3 and layered Are stacked over the locking projections 8 at positions corresponding to the holes 4. Therefore, the sandwich structure 13 with respect to the displacement in the interior direction of the connector housing B, is backed up by the backup plate 5 _1, for displacement in the outside direction, is backed up by the backup plate 5 _2. Then, when pressed into the approximate center of the back-up plate 5 ₂ holes 4 a tip D ₁ of the terminal fittings D connected to leads E, silicone gel 2 in a pair of polyethylene films 3, 3 and layered readily Yabuana, In addition, lead wire E
Is pushed out, the concave portion 11 of the terminal fitting D engages with the flexible locking piece 12, and the assembly of the terminal fitting D is completed.

Therefore, after the lead wire E is inserted through the waterproof member C, the terminal fitting D is connected, or the lead wire E and the terminal fitting D are connected.
It is not necessary to insert the waterproof member while expanding the hole of the waterproof member by using a jig and connecting in advance. Furthermore, the sandwich structure 1
3 and the inner wall 14 of the connector housing B are sealed by the silicon gel 2, and the penetrating portion 15 of the lead wire E through the silicon gel 2 is also sealed by the silicon gel 2, and the connector housing B is completely sealed from the end 1 side. Waterproof. Next, a waterproof joint connector A 'according to another embodiment of the present invention will be described with reference to FIGS. FIG. 5 is an exploded perspective view of the waterproof joint connector A ′.
FIG. 6 is a vertical sectional view of the joint part.

[0010] waterproof Jiyo Into connector A 'connector housing B' to 'insertion side end portion 1 of the' lead E of the Hama lead E to the front end portion E ₁ is peeled 'waterproof member C has penetrated' (See FIG. 6). The connector housing B 'is composed of a square main body Ba' made of synthetic resin and a lead wire holder locking portion Bb 'having one side wall extended, and a locking projection Bc' for locking the lead wire E '. Locking part B
b '. The lead wire holder 16 is a square body made of a synthetic resin. Opposing side walls 16a, 16a are extended, and their ends are provided with cutouts which engage with the locking projections Bb "of the lead wire holder locking portion Bb '. 6, a rectangular parallelepiped conductive substance 17 obtained by adding metal fibers or particles, flakes or carbon fibers, carbon black, graphite, or the like to silicon gel is provided inside the main portion Ba '. Then, a rectangular parallelepiped sandwich structure 13 'similar to that of the above-described embodiment is laminated, and then a hole 4' through which the lead wire E 'is inserted is formed, and both ends are bent in a U-shape in cross section. The cover is covered with a backup plate 5 ', and the hardness of the conductive material 17 is adjusted so that the core wire of the lead wire E' can be touched .. The bent portions 5a ', 5a at both ends of the backup plate 5'. A pair of locking projections B of the connector housing B 'main portion Ba' of the
a ", 5a", 5a "
Is provided.

Therefore, the bottom surface of the main portion Ba 'of the connector housing B' is held by the conductive substance 17 for the inward displacement of the sandwich structure 13 ', and the backup plate 5 is held for the outward displacement. 'Holds. When assembling, first, the conductive substance 17 is filled into the inside of the main portion Ba 'of the connector housing B', then the sandwich structure 13 'is laminated and the backup plate 5' is pressed, and the notch 5a "is inserted into the main portion Ba '. And the backup plate 5 'is locked by being locked with the pair of locking projections Ba ". Then inserted approximately in the center of the 'respective holes 4' of the backup plate 5 'lead E peeled of' tip E ₁ until it reaches the bottom of the main portion Ba '. In this case, the state of the holes and the seal of the sandwich structure 13 'is completely the same as that of the above-described embodiment, and the description is omitted.
Next, when the notch 16c of the lead wire holder 16 is locked with the locking protrusion Bb ″ of the lead wire holder locking portion Bb ′, the locking protrusion Bc ′ of the lead wire E ′ and the lead wire holder 16 are locked. A maze-shaped space is formed by the pair of side walls 16b, 16b, and the lead wire E 'is drawn with some difficulty in this space, so that at the corner between the locking projection Bc' and the side wall 16b, The lead wire E 'is locked (see FIG. 7).

[0012] An object of the tip E ₁ was peeled of skin pierced lead wire E 'to the conductive material 17 is electrically connected to each other joint is achieved, is waterproof. Therefore,
It is not necessary to connect the terminal fitting after inserting the lead wire E 'through the waterproof member C', or to connect the lead wire E 'and the terminal fitting in advance and use a jig to enlarge the hole of the waterproof member while inserting it. Not at all. Although FIG. 2 illustrates a male terminal fitting as a terminal fitting, the same holds true for a female terminal fitting.

[0013]

[Effect of the Invention] The present invention is configured as described above.
Waterproof connectors can be easily assembled without using any jigs with the terminal fittings connected to the lead wires.
A feature of the waterproof joint connector is that the lead wire can be assembled simply by piercing the end of the lead wire.

[Brief description of the drawings]

FIG. 1 is a perspective view of a waterproof connector according to the present invention.

FIG. 2 is a vertical sectional view of the waterproof connector according to the present invention.

FIG. 3 is an enlarged view of a portion where a lead wire in FIG. 2 penetrates a waterproof member.

FIG. 4 is an exploded perspective view of a waterproof member.

FIG. 5 is an exploded perspective view of the waterproof joint connector according to the present invention.

FIG. 6 is a longitudinal sectional view of a joint portion of the waterproof joint connector according to the present invention.

FIG. 7 is a longitudinal sectional view of the waterproof joint connector in a state where lead wires are attached and assembled.

FIG. 8 is a longitudinal sectional view of a conventional waterproof connector.

FIG. 9 is a longitudinal sectional view of a conventional waterproof joint connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Waterproof connector B Connector housing C Waterproof member D Terminal fitting 1 End part 2 Silicon gel 3 Polyethylene film 4 Hole 5 Backup plate 6 Stopper 8 Locking projection 9 Partition wall 10 Storage chamber 11 Concave part 12 Flexible locking piece 13 Sandwich structure 14 Inner wall 15 Penetration part 16 Lead wire holder 17 Conductive substance

Claims (2)

(57) [Scope of request for utility model registration] 1. A waterproof connector in which a waterproof member is loaded into a terminal insertion side end of a connector housing, and a lead wire is inserted through the waterproof member. A waterproof member having a configuration in which both sides of the sandwich structure are stacked and held by a pair of backup plates having holes for allowing lead wires with terminals to pass therethrough, wherein the waterproof member is provided on the terminal insertion side of the connector housing. An end portion, an outer peripheral portion of the silicon gel of the sandwich structure is brought into close contact with an inner wall of the connector housing, and the lead wire with the terminal is inserted through the backup plate and the sandwich structure. Waterproof connector. 2. A waterproof joint connector in which a waterproof member is loaded into a terminal insertion side end of a connector housing, and a lead wire is inserted through the waterproof member. A sandwich structure in which both sides of a layered silicone gel are sandwiched by films. And one side of the sandwich structure was held by a pair of backup plates provided with holes for inserting lead wires, and the other side of the sandwich structure was held by a layered conductive material. A waterproof member having the above configuration, the waterproof member is inserted into the terminal insertion side end of the connector housing, the outer peripheral portion of the sandwich-structured silicon gel is brought into close contact with the inner wall of the connector housing, and the core of the terminal is stripped. The lead wire was inserted through the backup plate and the sandwich structure, and pierced the conductive material. A waterproof connector characterized in that: