JP2785704B2 - 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 connector in which a molded resin layer is integrated with a wire lead-out portion of a connector housing.

[0002]

2. Description of the Related Art As one type of a connector formed by molding an electric wire lead-out portion, for example, an insertion molded plug described in Japanese Utility Model Laid-Open No. 5-73771 is known. This is manufactured by attaching a pair of insertion terminals to a core made of a thermosetting resin, connecting an electric wire to the terminal, and molding the electric wire and the core with a thermoplastic resin. With this configuration, since the wire lead-out portion is covered with the flexible mold resin layer, there is obtained an advantage that the waterproof property is enhanced, the mechanical strength is improved, and the impact resistance is improved.

[0003]

However, when this type of mold structure is applied to a connector having a structure in which a terminal fitting is mounted in a cavity of a connector housing,
It raises various molding problems. In other words, if the wire outlet side of the connector housing is simply molded with the molding resin, the molding resin may enter the cavity due to the injection pressure at the time of molding, and may reach the connection portion of the terminal fitting. . To prevent this, it is necessary to seal the end of the cavity,
The injection pressure of the mold resin is quite high, and there is a situation that the wire penetrates in that part, so it is difficult to seal it, and if the injection pressure is lowered to prevent leakage of the mold resin, production will occur It causes problems such as deterioration of performance. Also, in such a molded connector,
The problematic water intrusion paths are at the boundary between the mold resin layer and the outer sheath of the electric wire and at the boundary between the mold resin layer and the connector housing. At the boundary between the resins, if the affinity between the two resins is poor, it is difficult to adhere to each other. If the coefficients of thermal expansion are different, a gap occurs due to a difference in expansion and contraction due to the cooling process during molding and temperature changes in the use environment. Because. Therefore, it is necessary to select a resin having a good affinity for the sheath resin of the electric wire and the molding resin of the connector housing and a small difference in thermal expansion coefficient. However,
Generally, polyethylene, cross-linked polyethylene, or fluorine resin is used for the sheath resin of the electric wire, and PBT (polybutylene terephthalate) or PPS (polyphenylene sulfide) is often used for the connector housing, and both materials are completely different in general. It is. For this reason, it is quite difficult to select a mold resin that is compatible with both resins.Therefore, it is necessary to select a mold resin material while taking advantage of the momentum and cost disadvantages, and to reconsider the materials of the outer sheath resin of the electric wire and the connector housing. There was a need.

[0004] The present invention has been made in view of the above circumstances. Accordingly, it is an object of the present invention to provide a connector capable of resin-molding an electric wire lead-out portion without causing a problem such as leakage of molding resin while having a configuration in which a terminal fitting is mounted in a cavity of a connector housing.

[0005]

According to a first aspect of the present invention, there is provided a waterproof connector having a connector housing having a cavity having a terminal insertion opening, and a terminal connected to an electric wire and inserted into the cavity from the terminal insertion opening. A metal fitting, a waterproof seal that is housed from the terminal insertion opening of the cavity and tightly contacts the inner peripheral surface of the cavity to seal the cavity from the terminal insertion opening side watertightly, and a terminal fitting and the waterproof seal in the cavity. A mold resin layer molded so as to surround the electric wire and be connected to the connector housing on the terminal insertion opening side of the connector housing in the housed state, and to connect the electric wire from the terminal insertion opening of the connector housing; A plug having an electric wire insertion hole to be inserted is inserted subsequently to the waterproof seal, The plug body is configured to block the mold resin from the waterproof seal when the mold resin is injected, and further, the inner peripheral surface of the housing portion of the plug body and the outer peripheral surface of the plug body in the cavity. Are characterized in that they are configured to be tapered so that they become narrower toward each other and to be in close contact with each other.

According to a second aspect of the present invention, in the first aspect of the present invention, the plug comprises a plurality of split plugs, and the plug is connected to the connector with the electric wire sandwiched between the split plugs. It is characterized by being inserted from the terminal insertion opening of the housing. The invention of claim 3 is characterized in that, in the invention of claim 2, each of the split plugs is provided with a temporary locking portion for engaging with each other to form an integrated state.

[0007]

According to the waterproof connector of the present invention, a waterproof seal is provided in the terminal insertion opening of the cavity in addition to the mold resin layer. Even if a gap is formed between the housing and the housing, the water is prevented from entering the terminal fitting by the waterproof seal even if water enters from the gap. In addition, a plug is inserted behind the waterproof seal, and the inner peripheral surface of the housing portion of the plug and the outer peripheral surface of the plug have a tapered shape that becomes narrower toward the back of the cavity. The plug is pressed against the inner side of the cavity by the injection pressure of the mold resin, and the adhesion to the connector housing is further increased, preventing leakage of the mold resin, and leading to a waterproof seal where the resin exhibits a waterproof function. Such situations can be avoided. As a result, it is possible to further ensure the waterproofness. In addition, various materials can be freely selected in consideration of the cost and the like without fear that a gap is generated between the mold resin layer and the electric wire sheath or the connector housing. It is possible to achieve both waterproofness.

In the structure of the second aspect of the present invention, the plug is divided into two parts, and the electric wire is sandwiched between the divided plugs so that the plug can be inserted into the electric wire. According to the configuration of the third aspect in which the provisional locking portion is provided, the operation of mounting the plug in the terminal insertion opening of the connector housing becomes extremely simple.

[0009]

[0010]

[0011]

[0012]

According to the second aspect of the present invention, it is possible to omit the troublesome work of inserting an electric wire through the plug body. Since the body is in an integrated state, there is an advantage in the manufacturing operation that the mounting operation can be performed extremely easily.

[0014]

[0015]

【Example】

<First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS.

(Configuration of the Embodiment) In FIGS. 1 to 3 showing the overall configuration, a connector housing 10 is, for example, P
It is made of BT. This connector housing 10 is
The terminal insertion opening 1 is formed around a terminal storage tube portion 13 provided with two cavities 12 defined by the terminal insertion tube 1 at the rear end side (right side in FIG. 1) of the terminal storage tube portion 13.
From 31, terminal fittings 40 to be described later are inserted into each cavity 12. Inside the rear end side (right side in FIG. 1) of the terminal storage tube portion 13, a cavity 12 is provided.
Is not provided, a single plug housing chamber 14 connected to each cavity 12 is formed here,
The shape of the inner peripheral surface has a tapered shape that becomes narrower toward the back (the back of the cavity 12). In addition, two annular ribs 15 and 16 are provided on the outer peripheral surface on the rear end side of the terminal storage cylindrical portion 13.
Are protruded at predetermined intervals. This annular rib 1
The outer diameter of the annular rib 15 located on the front side (left side in FIG. 1) is larger than that of the annular rib 16 located on the rear side (right side in FIG. 1). The front surfaces of the annular ribs 15 and 16 are flat, and the rear surface is formed with inclined surfaces 151 and 161 whose outer peripheral sides are inclined obliquely forward.

On the other hand, a cylindrical housing-side waterproof seal 17 is fitted around the distal end side of the terminal storage tube portion 13, and a hood portion 18 surrounding the periphery is provided on the distal end side of the terminal storage tube portion 13. ing. A mating connector housing (not shown) is fitted into the hood portion 18, and a lock piece 181 provided on the hood portion 18 is provided.
, The mating connector housing is locked. Reference numeral 19 denotes a housing for preventing the housing-side waterproof seal 17 from coming off,
This is a retainer for preventing the terminal fitting 40 inserted into the terminal fitting 2 from coming off.

On the other hand, the cable 20 connected to this connector is of a two-core type in which two electric wires 22 are integrated with an outer sheath 21 (they need not necessarily be integrated, and two single wires are used). The outer sheath 21 is removed from the distal end side, and the two electric wires 22 are separated and exposed, and the insulating coating 22 near the distal end of each electric wire 22 is further removed.
The waterproof seal 30 is fitted to one part, and the insulating coating 221 is removed from the front part to expose the core wire 222.

There are two terminal fittings 40 connected to the ends of the electric wires 22, respectively. These are well-known structures, and are integrally provided with a wire barrel 42 for caulking the core wire 222 of the electric wire 22 and an insulation barrel 43 for caulking the waterproof seal 30 following the female connection portion 41.
The waterproof seal 30 is made of a soft synthetic rubber, has a cylindrical shape as a whole, and is provided behind the portion of the terminal fitting 40 which is swaged by the insulation barrel 43.
An annular lip portion 31 is protruded. The outer peripheral surface of the lip portion 31 is in close contact with the inner peripheral surface of the cavity 12 of the connector housing 10 to seal the front and rear of the lip portion 31 in a watertight manner.

In the plug housing chamber 14 of the connector housing 10, a hard plastic plug 50 is stored from the terminal insertion opening 131. As shown in FIGS. 3 and 4, this is configured by combining two split plugs 51, 51 having a shape that sandwiches the two electric wires 22 from above and below, and corresponds to the mating surface of each split plug 51. Two grooves 52 each having a U-shaped cross section are formed at positions. Therefore, in a state where the two split plugs 51 and 51 are combined, an electric wire insertion hole 53 is formed by these grooves 52, and the electric wire 22 passes through the electric wire insertion hole 53. Further, each of the divided plugs 51, 51 has a tapered shape that becomes thinner toward the distal end side in accordance with the inner peripheral surface shape of the plug storage chamber 14, and the plug 50 that combines these tapers is also tapered as shown in FIG. Is formed. In addition, on the inner peripheral surface of each of the grooves 52, three pressing protrusions 54 are provided intermittently along the insertion direction of the electric wire 22, and the pressing protrusions 54 cut into the insulating coating 221 of the electric wire 22. In this state, the sealing performance before and after the plug 50 is improved. In addition, a locking hole 56 is formed in a lower portion 55 of the upper end of each split plug 51 as shown in FIG. 4 so that a jig (not shown) can be hooked here. It has become.

On the rear end side of the connector housing 10, a mold resin layer 100 formed by injection molding of a flexible synthetic rubber material is provided integrally. The front end of the mold resin layer 100 surrounds the rear end of the terminal housing cylindrical portion 13, and the rear end is gradually narrowed to surround the front end of the outer sheath 21 of the cable 20. Although the connector housing 10 is shown separately from the connector housing 10 in FIG.
Is in a state of being fixed to the connector housing 10 so as to surround the rear end portion of the terminal storage tube portion 13 and cannot be separated from the connector housing 10 in practice.

The present embodiment has the above-described configuration. Next, a description will be given of a manufacturing procedure of a portion related to the present invention. A terminal fitting 40 is connected to the end of each electric wire 22 of the cable 20 by crimping with the waterproof seal 30 fitted. Then, these terminal fittings 40 are connected to the connector housing 1.
0, and is inserted into each of the cavities 12, and the retainer 19 is pushed into the locking position to prevent the terminal fitting 40 from coming off. Next, one split plug 51 is inserted into the plug storage chamber 14 from the terminal insertion opening 131 of the connector housing 10 while being addressed from below the electric wire 22. When the other split plug 51 is inserted into the plug housing chamber 14 from the terminal insertion opening 131 while being addressed from the upper side of the electric wire 22, the electric wire 22 is separated by the two split plugs 51, 51. A plug 50 sandwiched from above and below and composed of these
The electric wire 22 has penetrated the inside of the electric wire insertion hole 53 of FIG.
Also, when inserting the second split plug 51, if the split plug 51 is pressed in so as to be strongly pressed, the pressing ridge formed on the inner peripheral surface of the groove 52 of each split plug 51. 54
Bites into the insulating coating 221 of the electric wire 22,
The plug 50 and the electric wire 22 come into close contact with each other, and the plug 50 is pressed into the plug housing chamber 14 of the connector housing 10 to be fixed. Then, the connector housing 10 in that state is set in a molding die 110 as shown in FIG.
When the molding resin is injected into the molding die 110 at a predetermined injection pressure, the molding resin is filled into the molding die 110 and the molding resin layer 100 is molded. At this time, the plug 50
Is pushed into the inside of the connector housing 10 by the resin injection pressure in the molding die 110, and its outer peripheral surface is in close contact with the inner peripheral surface of the plug housing chamber 14 of the connector housing 10 to prevent leakage of the mold resin to the cavity 12 side. Is done.

(Effects of Embodiment) The effects of this embodiment are as follows.

From the connector housing 10 to the cable 2
Since the lead-out side of the cable 20 is covered with the mold resin layer 100, it is possible to effectively prevent water from entering therefrom, and to mold the lead-out side of the cable 20 with the flexible mold resin layer 100. Therefore, even if the cable 20 is bent, the molded resin layer 100 sufficiently deforms to maintain the waterproof property, and also the impact force such that a rock or the like which is mounted on the vehicle and jumps up during traveling collides. Even if it acts, it is less likely to be damaged and has high reliability.

In the present invention, since the plug 50 through which the electric wire 22 penetrates is disposed in the terminal insertion opening 131, it is possible to prevent the molding resin from flowing into the terminal fitting 40 with a strong pressure during the molding of the molding resin layer 100. Can be. Moreover, since the inner peripheral surface of the plug housing chamber 14 and the outer peripheral surface of the plug 50 in the cavity 12 have a tapered shape that becomes narrower toward the back, the plug 50 is formed using the injection pressure of the mold resin. The inner peripheral surface of the plug housing chamber 14 is press-bonded, so that leakage of the mold resin can be more reliably prevented.

In this type of molding resin layer 100, a minute gap may be formed between the molding resin layer 100 and the connector housing 10 or between the molding resin layer 100 and the electric wire 22 in this embodiment. Since the waterproof seal 30 is provided not only in the terminal insertion opening 131 of the cavity 12 but also in the cavity 12, even if a gap is formed between the mold resin layer 100 and the electric wire 22 or the connector housing 10, even if water enters therefrom, In addition, the waterproof seal 30 reliably prevents water from entering the terminal fitting 40 side. Therefore, various materials such as the connector housing 10, the electric wire 22, or the mold resin layer 100 can be freely selected in consideration of the material cost and the like without fear of occurrence of such a gap. It is possible to achieve both cost and high waterproofness.

Moreover, since the plug 50 is composed of two divided plugs 51 which are divided into upper and lower parts, the plug 22 is sandwiched between the divided plugs 51, 51 so that the plug 50 is formed. The manufacturing process is simplified and the manufacturing cost is advantageous as compared with a configuration in which the wire can be inserted into the electric wire 22 and the electric wire penetrates a through hole provided in the plug.

Since the locking hole 56 is formed on the upper surface of the split plug 51, after the plug 50 is inserted into the terminal insertion opening 131 of the connector housing 10 during the manufacturing process, for example, the mounting failure of the terminal fitting 40 is detected. If it is found, the stopper 50 can be easily pulled out by inserting a hook-shaped jig into the locking hole 56, which is convenient.

At the rear end of the connector housing 10, 2
Since the annular ribs 15 and 16 are formed, the bonding property between the mold resin layer 100 formed so as to cover the annular ribs and the connector housing 10 is enhanced, and the mold resin layer 1 is formed.
00 can be prevented.

Further, the side of the annular ribs 15 and 16 that is closer to the resin injection gate is set to have such a relationship that the projecting dimension is lower and the side farther is higher. Since the 161 is formed, the molding resin injected from the injection gate flows sufficiently to every corner, and occurrence of molding failure can be suppressed.

<Other Embodiments> The present invention is not limited to the above-described embodiments. For example, the following embodiments are possible, and these are also included in the technical scope of the present invention. In each of the embodiments described below, configurations other than those specifically described are the same as those in the first embodiment, and thus duplicate description is omitted, and the same reference numerals are given to the same portions as necessary.

(1) FIGS. 6 and 7 show a plug 50 according to a second embodiment of the present invention. The difference from the first embodiment is that a structure is added to the plug 50 so that the divided plugs 51 can be temporarily locked to each other. That is, each split plug 51 is formed with two grooves 52, and a flat portion 57 between the grooves 52 is provided with a locking hole 58 at the front end side, and a locking projection at the rear end side. 59 are protruded. When the two split plugs 51 are overlapped with the electric wire 22 interposed therebetween, each of the locking projections 59 is provided with the locking hole 5 of the other split plug 51.
8, the split plugs 51, 51 are integrated by frictional force. With such a configuration, the two split plugs 51, 51 can be handled integrally with the electric wire 22 sandwiched therebetween. You will be able to release your hand. Therefore, each of the split plugs 51 is connected to the plug housing chamber 14 of the connector housing 10.
Unlike the first embodiment, which has to be inserted into the plug body, the electric wire 22 is sandwiched between the split plugs 51 and 51 in advance and integrated, and this may be inserted into the plug housing chamber 14, so that molding can be performed. There is an advantage that the operation of attaching the plug 50 to the terminal insertion opening 131 of the connector housing 10 in advance is simplified.

As in the third to fifth embodiments shown in FIGS. 8 to 10, the locking hole 58 and the locking projection 59 may be located outside the groove 52. In particular, the second
When the upper and lower split plugs 51 and 51 have the same shape as in the fourth embodiment, there is an advantage that only one type of forming die is required and the die cost is reduced.

Further, as in the sixth embodiment shown in FIGS. 11 and 12, semi-cylindrical locking projections 60 are protruded from the flat portions 57 between the grooves 52, and are adjacent to the locking projections 60. A configuration in which the locking hole 61 having a semicircular cross section may be formed. According to this, when the two split plugs 51 and 51 are lightly overlapped with the electric wire 22 interposed therebetween, and are slid until the two locking projections 60 abut, the locking holes 61 of the locking projections 60 face each other. Since it is in the state, there is obtained an advantage that the positioning of the two split plugs 51, 51 becomes easy.

(2) As the temporary locking structure for integrating the split plugs 51, 51, a locking hole and a locking projection as in the second to sixth embodiments described above are used. However, the present invention is not limited to this, and a configuration using locking claws may be used as in the seventh embodiment shown in FIGS. That is, a pair of locking claws 6 are provided on one of the split plugs 51 at the left and right sides thereof.
2 and the locking claw 6 is attached to the other split plug 51.
That is, a locking recess 63 with which the engaging member 2 engages is formed. In this way, there is an advantage that a sufficiently high temporary locking force can be obtained as compared with the combination of the locking projection 59 and the locking hole 58 described above. In this case, if the depth of the formation of the locking concave portion 63 is set to a size such that the locking claw 62 in the engaged state is completely accommodated, the plug 50 can be inserted into the plug housing chamber 14 When the plug body is housed inside, the gap between the plug body 50 and the inner peripheral wall of the plug body storage chamber 14 is less likely to be generated, and the advantage that the sealing property of the mold resin is improved is obtained. In addition, as the protruding position of the above-described locking claw 62,
As in the eighth embodiment shown in FIGS. 15 and 16, both front and rear sides of the split plug 51 may be used.

(3) Further, as a structure for integrating the divided plugs 51, 51, as in the ninth embodiment shown in FIG. 17 and FIG.
It is also possible to adopt a configuration in which this is integrally molded with the locking members 1 and 51 and used together with the locking claw 62 and the locking recess 63. According to this, even before the electric wire 22 is sandwiched between the two split plugs 51, 51, both split plugs 51 can be handled as one component, so that component management is easy in the manufacturing process. There is an advantage of becoming. Further, as shown in the tenth embodiment in FIGS. 19 and 20, even if only the self hinge 64 is provided,
This has the advantage that component management during the manufacturing process is simplified.

(4) FIG. 21 shows a split plug 51 according to an eleventh embodiment of the present invention. The difference from the first embodiment lies in the structure of the groove 52 of the split plug 51, and the other points are the same as in the first embodiment. That is, each split plug 51 is formed with two grooves 52 and
On the inner peripheral surface of 2, two pressing ridges 54 are protrudingly provided at intervals. The height dimensions of the holding protrusions 54 are different from each other, and are set so as to be higher toward the terminal insertion opening 131 side. According to this, the sealing force becomes stronger toward the terminal insertion opening 131, and the overall watertightness becomes more complete.

(5) FIG. 22 shows a twelfth embodiment in which the stopper 50 attached to the stopper housing chamber 14 can be easily removed.
An example will be described. That is, the concave portions 55 are formed at both front and rear ends of the upper surface of the split plug 51, and the locking holes 56 for hooking a hook-shaped jig (not shown) for extracting the split plug 51 into each of the concave portions 55. According to this, the plug 5 is inserted into the plug storage chamber 14 of the connector housing 10 without concern for the direction of the split plug 51.
0 can be attached.

As shown in the thirteenth and fourteenth embodiments of FIGS. 23 and 24, the concave portion 55 and the locking hole 56 may be formed on the mating surface side of the split plug 51. 1
As shown in the fifth embodiment, a locking hole 5
26, and a hook-shaped jig (not shown) for pulling out the split plug 51 from the end of the split plug 51 as shown in the sixteenth embodiment of FIG. The stop projection 65 may be provided in a protruding manner.

(6) FIG. 27 shows a seventeenth embodiment in which the connection between the mold resin layer 100 and the connector housing 10 is enhanced. In this embodiment, the connector housing 10 has one
The two annular ribs 15 are provided.
Are formed with a plurality of through holes 152 through which the mold resin can enter, whereby the effect that the mold resin layer 100 can be more reliably prevented from falling out of the connector housing 10 can be obtained. Although not shown, the first
It is a matter of course that two annular ribs 15 and 16 are protruded from the connector housing 10 as in the embodiment, and through holes are respectively provided in these.

Further, even if the annular ribs 15 and 16 are not necessarily provided in the connector housing 10, a plurality of through holes 101 are formed in the rear end of the connector housing 10 as in the eighteenth embodiment shown in FIG. However, it is possible to prevent the mold resin layer 100 from slipping out even if the mold resin enters here. Depending on the required slip-off preventing force, as shown in the nineteenth embodiment in FIG. Needless to say, a configuration in which the holes 15 and 16 and the through hole 101 are omitted may be employed.

[0042]

(7) FIG. 30 shows a twentieth embodiment in which the shape of the plug is different from that of the first embodiment, and two tapered cylindrical bodies 71, 71 corresponding to each cavity of the connector housing.
Are integrated next to each other, and can be vertically divided into two parts. The twenty-first embodiment shown in FIG. 31 has a configuration in which a partition member 73 is inserted into a flat tapered cylinder 72 to form two electric wire insertion holes through which electric wires penetrate. FIG. 32
The twenty-second embodiment shown in FIG.
The outer peripheral surface is, of course, tapered and has two electric wire insertion holes 75 for penetrating the electric wire.

(8) FIG. 33 shows a twenty-third embodiment in which the structure of the connector housing and the plug is improved from the first embodiment. The inner peripheral wall of the plug housing chamber 14 of the connector housing 10 has a stepped shape, and the plug 76 has a stepped shape with a stepped portion 76a in the middle corresponding thereto. In this manner, an effect is obtained that the plug 76 does not excessively enter the cavity 12 during the mounting operation of the plug 76 or injection of the mold resin.

(9) FIGS. 34 and 35 show a twenty-fourth embodiment with different improvements. Here, a linear guide rib 78 extending in the insertion direction is protruded from the outer peripheral surface of the plug 77, and a guide groove 79 into which the guide rib 78 fits is formed on the inner peripheral wall of the plug storage chamber 14 of the connector housing 10. Are formed. According to this configuration, there is an advantage that the plug 77 is guided linearly without play, and the adhesion to the inner peripheral surface of the plug housing chamber 14 is further improved.

In addition, the present invention is not limited to the embodiment described with reference to the above description and the drawings. For example, an adhesive, a swelling agent, or a sealant may be applied to the outer peripheral surface of the plug to cover the plug housing. Or a rubber layer may be provided on the outer peripheral surface of the plug body, and various modifications can be made without departing from the scope of the invention.

[Brief description of the drawings]

FIG. 1 is an overall longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of the same.

FIG. 3 is an exploded perspective view of the whole.

FIG. 4 is a perspective view showing the same plug.

FIG. 5 is a cross-sectional view showing a state when the molding resin layer is molded.

FIG. 6 is a longitudinal sectional view of a plug showing a second embodiment of the present invention.

FIG. 7 is a perspective view showing one of the split plugs.

FIG. 8 is a perspective view of a split plug according to a third embodiment of the present invention.

FIG. 9 is a perspective view of a split plug according to a fourth embodiment of the present invention.

FIG. 10 is a perspective view of a split plug according to a fifth embodiment of the present invention.

FIG. 11 is a perspective view of a split plug showing a sixth embodiment of the present invention.

FIG. 12 is a vertical sectional view of the split plug.

FIG. 13 is a perspective view of a split plug according to a seventh embodiment of the present invention.

FIG. 14 is a longitudinal sectional view of the split plug.

FIG. 15 is a perspective view of a split plug according to an eighth embodiment of the present invention.

FIG. 16 is a longitudinal sectional view of the split plug.

FIG. 17 is a perspective view of a split plug according to a ninth embodiment of the present invention.

FIG. 18 is a longitudinal sectional view of the split plug.

FIG. 19 is a perspective view of a split plug according to a tenth embodiment of the present invention.

FIG. 20 is a longitudinal sectional view of the split plug.

FIG. 21 is a longitudinal sectional view of a split plug according to an eleventh embodiment of the present invention.

FIG. 22 is a perspective view of a split plug according to a twelfth embodiment of the present invention.

FIG. 23 is a perspective view of a split plug showing a thirteenth embodiment of the present invention.

FIG. 24 is a perspective view of a split plug according to a fourteenth embodiment of the present invention.

FIG. 25 is a perspective view of a split plug according to a fifteenth embodiment of the present invention.

FIG. 26 is a perspective view of a split plug according to a sixteenth embodiment of the present invention.

FIG. 27 is a partial sectional view of a connector housing showing a seventeenth embodiment of the present invention.

FIG. 28 is a partial sectional view of a connector housing showing an eighteenth embodiment of the present invention.

FIG. 29 is a partial sectional view of a connector housing showing a nineteenth embodiment of the present invention.

FIG. 30 is a perspective view of a plug showing a twentieth embodiment of the present invention.

FIG. 31 is a perspective view of a plug showing a twenty-first embodiment of the present invention.

FIG. 32 is a perspective view of a plug showing a twenty-second embodiment of the present invention.

FIG. 33 is a cross-sectional view of a plug housing part according to a twenty-third embodiment of the present invention.

FIG. 34 is a cross-sectional view of a plug housing part according to a twenty-fourth embodiment of the present invention.

FIG. 35 is a front view of the same plug.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing 100 ... Mold resin layer 12 ... Cavity 131 ... Terminal storage opening 14 ... Plug body storage room 22 ... Electric wire 30 ... Waterproof seal 40 ... Terminal fitting 50 ... Plug body 51 ... Split plug body 52 ... Groove 58 ... Lock Hole 59: locking projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-1775 (JP, A) JP-A 51-55392 (JP, U) JP-A 3-10479 (JP, U) 18532 (JP, Y2) Jikken Sho 59-8295 (JP, Y2) Jiko 56-33104 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01R 13/52 301

Claims (3)

(57) [Claims] 1. A connector housing having a cavity having a terminal insertion opening, a terminal fitting to which an electric wire is connected and inserted into the cavity through the terminal insertion opening, and a cavity housed through the terminal insertion opening of the cavity. A watertight seal that tightly seals the cavity from its terminal insertion opening side by being in close contact with the inner peripheral surface of the connector housing; and a terminal fitting and the waterproof seal stored in the cavity in the terminal insertion opening side of the connector housing. A plug body surrounding the electric wire and molded so as to be continuous with the connector housing, and a plug having an electric wire insertion hole for inserting the electric wire from a terminal insertion opening of the connector housing follows the waterproof seal. The plug is inserted into the mold when the mold resin is injected. Fat is blocked from the waterproof seal. Further, the inner peripheral surface of the housing portion of the plug and the outer peripheral surface of the plug in the cavity have a tapered shape that becomes narrower toward each other to form a tapered shape. A waterproof connector characterized by being configured to be able to adhere to a waterproof connector. 2. The plug body comprises a plurality of split plug bodies,
The waterproof connector according to claim 1, wherein the plug is inserted from a terminal insertion opening of the connector housing with the electric wire sandwiched between the split plugs. 3. The waterproof connector according to claim 2, wherein each of the split plugs is provided with a temporary locking portion for engaging with each other to form an integrated state.