JP5714092B1 - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector capable of accurately sealing against a liquid such as water used for car washing. A waterproof connector having a connector housing provided with a cavity in which a terminal fitting to which a cable is connected is accommodated, and an insertion surface formed with a cable insertion hole through which the cable communicates with the cavity; And a protective wall provided facing the insertion surface. [Selection] Figure 2

Description

  The present invention relates to a waterproof connector having an improved waterproof function.

  Wire harnesses for supplying electric power and transmitting / receiving various signals are used for electrical components mounted on vehicles such as cars. The wire harness is connected to a connector for electrical connection with an electrical component or the like.

  The vehicle has a gap formed in the lower part of the vehicle, in addition to the bonnet and the door. Even if liquid such as rain enters from the gap, the wire harness and the connector are previously waterproofed using rubber or the like so that the liquid does not enter (for example, Patent Documents 1 and 2).

  Also, vehicles such as cars need to be washed regularly. A car wash is an operation for removing dirt on a vehicle body with water in general. In a car wash, water is applied to the vehicle from various angles in order to remove dirt. For this reason, in car washing, water is rarely applied to the vehicle from a certain angular direction. Moreover, as water used for car washing, high-pressure water has been increasingly used in recent years so that the car can be washed accurately in a short time. For this reason, it is assumed that water enters a gap formed in the vehicle.

Patent No. 3909417 JP 2010-272405 A

  This invention is made | formed in view of the above-mentioned point, The place made into the objective is providing the connector which can seal correctly with respect to liquids, such as water used for a car wash etc.

Embodiments of the present invention include:
A waterproof connector having a connector housing provided with a cavity for accommodating a terminal fitting to which a cable is connected,
An insertion surface formed with a cable insertion hole through which the cable communicates with the cavity;
And a protective wall provided facing the insertion surface.

  Since the protective wall is provided to face the insertion surface, the water flow can be blocked by the protective wall.

  It can be accurately sealed against liquids such as water used for car washing.

It is a perspective view which shows the external appearance of the waterproof connector by this Embodiment. It is sectional drawing which shows the cross section of the waterproof connector and waterproof plug by this Embodiment. It is sectional drawing which shows the cross section of the waterproof connector by this Embodiment, a waterproof stopper, and a terminal metal fitting. It is a side view which shows the side of the waterproofing stopper by this Embodiment. It is sectional drawing which shows the cross section of the waterproofing stopper by this Embodiment. It is sectional drawing which shows a mode that a water flow is disperse | distributed by a water stop wall. It is the side view (a) which shows the side surface of a waterproof plug and a terminal metal fitting, and sectional drawing (b) which shows the cross section of a waterproof plug and a terminal metal fitting.

Embodiments of the present invention include:
Waterproof connector (eg, connector housing 100) having a connector housing (eg, connector housing 100) provided with a cavity (eg, cavity 110) in which a terminal fitting (eg, terminal fitting 300) to which a cable (eg, cable 400) is connected is accommodated. A waterproof connector 10),
An insertion surface (for example, a terminal fitting insertion surface 108) formed with a cable insertion hole (for example, the insertion hole 102) through which the cable communicates with the cavity;
A protective wall (for example, a water blocking wall 104) provided facing the insertion surface;
A waterproof through hole (for example, through hole 202) through which a cable is inserted, and a waterproof plug (for example, waterproof plug 200) provided in the cable insertion hole,
The waterproof plug protrudes from the cable insertion hole, has an end portion of the waterproof plug, and has a flange portion (for example, a waterproof plate 210) having a hook shape,
The collar portion is located between the protective wall and the insertion surface .

Embodiments of the present invention further include
Before SL protection wall has a protection through hole cable is inserted (e.g., the insertion hole 106),
The flange is exposed in the protective through hole.

Embodiments of the present invention further include
A protective wall is formed integrally connected to the connector housing via a support portion (for example, the support portion 112).

Embodiments of the present invention further include
The diameter of the collar part is formed larger than the diameter of the cable insertion hole so that the collar part can be held on the insertion surface,
The waterproof through hole includes a first water stop lip (for example, an inner water stop lip 270) and a second water stop lip (for example, an inner stop lip) formed at different positions along the longitudinal direction of the waterproof through hole. Water lip 280),
The first water stop lip and the second water stop lip have at least one protrusion (for example, the first protrusion 270a, the second protrusion 270b, or the like) protruding toward the inside of the waterproof through hole. , The first protrusion 280a and the second protrusion 280b),
The waterproof plug has the same diameter portion (e.g., the same diameter portion 220) formed along the waterproof plug between the flange portion and the first water stop lip,
Projecting portion of the second water stop lip, the Ru is formed at a position overlapping the constant diameter portion.

Embodiments of the present invention further include
The first water stop lip has a plurality of protrusions (for example, a first protrusion 270a and a second protrusion 270b) formed at a first interval along the longitudinal direction of the waterproof through hole. Have
The second water stop lip has a plurality of protrusions (for example, the first protrusion 280a and the second protrusion 280b) formed at the first interval along the longitudinal direction of the waterproof through hole. )
An interval (for example, a second protrusion) between protrusions formed closest to the plurality of protrusions of the first water stop lip and the protrusions of the second water stop lip. 270b and the first protrusion 280a) is longer than the first interval.

  A gap is not formed between the protective through hole and the projecting end, and the water flow can be prevented from being transmitted to the waterproof plug.

In addition, embodiments of the present invention include
Waterproof connector (eg, connector housing 100) having a connector housing (eg, connector housing 100) provided with a cavity (eg, cavity 110) in which a terminal fitting (eg, terminal fitting 300) to which a cable (eg, cable 400) is connected is accommodated. A waterproof connector 10),
An insertion surface (for example, a terminal fitting insertion surface 108) formed with a cable insertion hole (for example, the insertion hole 102) through which the cable communicates with the cavity;
A waterproof through hole (for example, through hole 202) through which a cable is inserted, and a waterproof plug (for example, waterproof plug 200) provided in the cable insertion hole,
The waterproof through hole includes a first water stop lip (for example, an inner water stop lip 270) and a second water stop lip (for example, an inner stop lip) formed at different positions along the longitudinal direction of the waterproof through hole. Water lip 280) and
The first water stop lip and the second water stop lip have at least one protrusion (for example, the first protrusion 270a, the second protrusion 270b, or the like) protruding toward the inside of the waterproof through hole. , A waterproof connector having a first protrusion 280a and a second protrusion 280b).

  Since it has the 1st water stop lip and the 2nd water stop lip, even when liquid, such as water, flows into a waterproof penetration hole, it can intercept.

Embodiments of the present invention further include
The terminal fitting has a pressing portion (for example, a caulking piece 312) for pressing the cable,
At least one of the first water stop lip or the second water stop lip is a waterproof connector that is located on the pressing portion and pressed together with the cable.

  Since at least one of the first water stop lip or the second water stop lip is pressed by the pressing portion, the sealing function can be improved.

  Embodiments will be described below with reference to the drawings.

<<< Waterproof connector 10 >>>
FIG. 1 is a perspective view showing an overview of a waterproof connector 10 of the present embodiment. FIG. 2 is a cross-sectional view showing a cross section of the connector housing 100 of the waterproof connector 10.

  The waterproof connector 10 mainly includes a connector housing 100, a waterproof plug 200, and a terminal fitting 300.

<< Connector housing 100 >>
A cavity 110 for accommodating the terminal fitting 300 and the cable 400 (see FIGS. 3 and 7) is formed inside the connector housing 100. The terminal fitting 300 is formed of metal, has conductivity, and has a long shape. Each of the cavities 110 is formed according to the shape and size of the terminal fitting 300 to be accommodated, and has a long shape.

<< Water blocking wall 104 >>
The connector housing 100 is formed with a terminal fitting insertion surface 108. Further, the connector housing 100 has an insertion hole 102 for inserting the terminal fitting 300 and the cable 400. The insertion hole 102 has a shape of a substantially circular through hole. The insertion hole 102 communicates with the cavity 110 inside the connector housing 100. The terminal fitting 300 and the cable 400 are inserted from the terminal fitting insertion surface 108 toward the cavity 110 through the insertion hole 102.

  A water blocking wall 104 is formed in front of the terminal fitting insertion surface 108 of the connector housing 100. The water blocking wall 104 is connected to the connector housing 100 by a support portion 112. The water blocking wall 104 is disposed at a position separated from the terminal fitting insertion surface 108 by the support portion 112. An insertion hole 106 is formed in the water blocking wall 104. The insertion hole 106 has a shape of a substantially circular through hole. The insertion hole 106 is formed to face the opening 120 of the insertion hole 102. An insertion hole 106 is positioned in front of the insertion hole 102 so as to be substantially concentric with the insertion hole 102 at a predetermined distance.

  As described above, the water blocking wall 104 is disposed at a position separated from the terminal fitting insertion surface 108 by the support portion 112. That is, a gap is formed between the water blocking wall 104 and the connector housing 100 (terminal fitting insertion surface 108). By forming the gap, even if water adheres to the back side of the water blocking wall 104 (side facing the connector housing 100), the water can be guided through the gap and discharged from the connector housing 100. Water can be prevented from entering the connector housing 100.

  In the example described above, the water blocking wall 104 is formed integrally with the connector housing 100 by the support portion 112. The water blocking wall 104 can be detachably provided on the connector housing 100. For example, the connector housing 100 is provided with an insertion hole, the water blocking wall 104 is provided with a protruding piece, the protruding piece of the water blocking wall 104 is hooked on the insertion hole of the connector housing 100, and the water blocking wall 104 is connected to the connector housing 100. Can be detachably provided. By doing in this way, various water blocking walls 104 in which insertion holes 106 are formed according to cables of various thicknesses are prepared in advance, and the water blocking walls 104 are appropriately selected according to the cables, and the connector housing. 100 can be attached.

  The size and shape of the front surface of the water blocking wall 104 can be determined as appropriate. The water blocking wall 104 is preferably substantially the same as the terminal fitting insertion surface 108. The front surface of the terminal fitting insertion surface 108 can be covered with the water blocking wall 104, and the water flow can be weakened. It should be noted that the size and shape of the front surface of the water blocking wall 104 may be determined as appropriate according to the location and application where the connector housing 100 is attached.

<< Waterproof stopper 200 >>
The waterproof plug 200 is formed of a flexible and waterproof material such as rubber. The waterproof plug 200 is preferably one that can be elastically deformed.

  The waterproof plug 200 has a long and substantially cylindrical shape. A through-hole 202 is formed substantially in the center along the longitudinal direction of the waterproof plug 200. The waterproof plug 200 has the same diameter portion 220 as the waterproof plate 210, outer water stop lips 230, 240, 250, and a small diameter portion 260. These are formed substantially concentrically. Further, inner water stop lips 270 and 280 are formed in a through hole 202 (described later) of the waterproof plug 200.

<Through hole 202>
A through hole 202 is formed in the substantially central portion of the waterproof plug 200 along the longitudinal direction. Both the terminal fitting 300 and the cable 400 are inserted into the through hole 202. The diameter of the through hole 202 is smaller than the diameter of the terminal fitting 300, the cable 400, or the like. When the terminal fitting 300 or the cable 400 is inserted into the through hole 202, the through hole 202 slightly extends to the terminal fitting 300 or the cable 400, and the inner wall of the through hole 202 is in close contact with the terminal fitting 300 or the cable 400. Thereby, it is possible to prevent water from entering the connector housing 100 through the terminal fitting 300 and the cable 400.

<Waterproof board 210>
A waterproof plate 210 is formed at the end of the waterproof plug 200 in the longitudinal direction. The waterproof plate 210 has a thin and substantially cylindrical shape. That is, the waterproof board 210 has a so-called bowl-like shape. The above-described through-hole 202 is formed at a substantially central portion of the waterproof plate 210. Therefore, the inner diameter of the waterproof plate 210 is the same as the diameter of the through hole 202.

  The outer diameter of the waterproof plate 210 is larger than the inner diameter of the insertion hole 102. Accordingly, even when the waterproof plug 200 is pulled inside the connector housing 100, the waterproof plate 210 can be locked by the opening 120 of the insertion hole 102 of the connector housing 100. It is possible to prevent the entirety of 200 from being inserted into the insertion hole 102, and the waterproof plug 200 can be held at a fixed position.

  Further, since the outer diameter of the waterproof plate 210 is larger than the inner diameter of the insertion hole 102, the waterproof plate 210 can cover the opening 120 of the insertion hole 102 of the connector housing 100. Therefore, even if a high-pressure water flow hits the waterproof plug 200, it is possible to prevent water from entering the connector housing 100 from the insertion hole 102.

<Same diameter part 220>
The same diameter portion 220 is formed with substantially the same diameter along the longitudinal direction of the waterproof plug 200. The above-described through-hole 202 is formed at a substantially central portion of the same diameter portion 220. Therefore, the inner diameter of the same diameter portion 220 is the same as the diameter of the through hole 202. The outer diameter of the same diameter portion 220 is slightly smaller than the inner diameter of the insertion hole 102. By doing so, the waterproof plug 200 can be smoothly inserted into the insertion hole 102.

<Outside water stop lip 230, 240, 250>
Outer water stop lips 230, 240, and 250 are formed at three different positions along the longitudinal direction of the waterproof plug 200. The through-hole 202 described above is formed at substantially the center of the outer water stop lips 230, 240 and 250. Therefore, the inner diameter of the outer water stop lips 230, 240 and 250 is the same as the diameter of the through hole 202.

  The outer water stop lips 230, 240, and 250 have a substantially cylindrical shape with a small thickness. The outer water stop lips 230 and 240 have the same shape.

  The outer water stop lip 230 is inclined such that the first inclined portion 232 that is inclined so as to become gradually thinner toward the outside, the same diameter portion 234 that is formed to have the same diameter, and the tapered portion gradually becomes thinner toward the inside. And a second inclined portion 236. In the present specification, the outside and the inside refer to directions when the waterproof plug 200 is attached to the connector housing 100. The outer side refers to the direction toward the outer side of the connector housing 100, and the inner side refers to the direction toward the inner side of the connector housing 100.

  The inclination of the first inclined part 232 is larger than the inclination of the second inclined part 236. By doing so, the waterproof plug 200 can be easily inserted into the connector housing 100 and can be made difficult to come off. Further, the diameter of the same diameter portion 234 is larger than the inner diameter of the insertion hole 102. Therefore, when the waterproof plug 200 is inserted into the connector housing 100, the outer water stop lip 230 can be brought into close contact with the inner side of the insertion hole 102 by being deformed. Accordingly, the waterproof plug 200 can be held at a fixed position, and water can be prevented from entering the connector housing 100 from the insertion hole 102.

  The outer water stop lip 240 also has a first inclined portion 242 that is inclined so as to become gradually thinner toward the outside, a same diameter portion 244 that is formed to have the same diameter, and an inclination that is gradually reduced toward the inside. And a second inclined portion 246.

  The inclination of the first inclined part 242 is larger than the inclination of the second inclined part 246. By doing so, the waterproof plug 200 can be easily inserted into the connector housing 100 and can be made difficult to come off. Further, the diameter of the same diameter portion 244 is larger than the inner diameter of the insertion hole 102. Therefore, when the waterproof plug 200 is inserted into the connector housing 100, the outer water stop lip 230 can be slightly deformed and can be in close contact with the inside of the insertion hole 102. Accordingly, the waterproof plug 200 can be held at a fixed position, and water can be prevented from entering the connector housing 100 from the insertion hole 102.

  The outer water stop lip 250 is formed only by the same diameter part 254 formed in the same diameter. In this way, the waterproof plug 200 can be held at a certain position.

  Further, the diameter of the same diameter portion 254 is larger than the inner diameter of the insertion hole 102. Therefore, when the waterproof plug 200 is inserted into the connector housing 100, the outer water stop lip 230 can be brought into close contact with the inner side of the insertion hole 102 by being deformed. Accordingly, the waterproof plug 200 can be held at a fixed position, and water can be prevented from entering the connector housing 100 from the insertion hole 102.

  As described above, the waterproof plug 200 according to the present embodiment has the outer water stop lips 230, 240, and 250 so that the waterproof plug 200 is accurately held by the connector housing 100 and is transmitted along the outer surface of the waterproof plug 200. It is possible to accurately prevent water from entering the connector housing 100.

  Further, between the same diameter portion 220 and the outer water stop lip 230 (valley portion), between the outer water stop lip 230 and the outer water stop lip 240 (valley portion), the outer water stop lip 240 and the outer water stop lip 250. The outer diameter between the two (valley parts) is smaller than the outer diameter of the same diameter part 220 and the outer water stop lips 230, 240, 250. By doing in this way, the area | region which the outer side water stop lip 230,240,250 can deform | transform can be enlarged, and the outer side water stop lip 230,240,250 can be made to contact | adhere with the penetration hole 102 easily.

<Small diameter part 260>
The small diameter portion 260 is formed narrow inside the waterproof plug 200. Specifically, it is formed narrower than the above-described same-diameter portion 220 and the outer water stop lips 230, 240 and 250. As shown in FIG. 7, the caulking piece 312 of the terminal fitting 300 is attached to the small diameter portion 260 by caulking. That is, the narrow diameter portion 260 is formed to be thinner than the same diameter portion 220 and the outer water stop lips 230, 240, and 250 in order to attach the caulking piece 312.

<Inner water stop lips 270 and 280>
Inner water stop lips 270 and 280 are formed in the through hole 202 of the waterproof plug 200 at different positions along the longitudinal direction.

  The inner water stop lip 270 is formed inside the inner water stop lip 280. The inner water stop lip 270 is formed inside the waterproof plug 200 corresponding to the small diameter portion 260. As described above, the caulking piece 312 of the terminal fitting 300 is attached to the small diameter portion 260. That is, the inner water stop lip 270 is formed at a position overlapping the caulking piece 312 (see FIG. 7) of the terminal fitting 300. By caulking the caulking piece 312, it is possible to improve electrical connection between the terminal fitting 300 and the cable 400 and to make the inner water stop lip 270 more closely contact the cable 400 than the inner water stop lip 280. it can. The contact area between the inner water stop lip 270 and the cable 400 can be increased, and the force with which the inner water stop lip 270 presses the cable 400 can be increased. This close contact can further prevent water from entering the inside of the connector housing 100 along the inner surface of the waterproof plug 200.

  The inner water stop lip 270 has a first protrusion 270a and a second protrusion 270b. The first protrusion 270a and the second protrusion 270b are formed at positions separated from each other along the longitudinal direction of the through hole 202. The first protrusion 270a and the second protrusion 270b have the same shape.

  As shown in FIG. 7, the inner water stop lip 270 is positioned on the caulking piece 312 of the terminal fitting 300. The width of the caulking piece 312 is longer than the entire inner water stop lip 270 (the first protrusion 270a and the second protrusion 270b). That is, the caulking piece 312 is formed so as to cover the entire inner water stop lip 270. For this reason, both the first protrusion 270a and the second protrusion 270b can be pressed by the caulking piece 312. In this manner, by caulking the single caulking piece 312, both the first projecting portion 270 a and the second projecting portion 270 b can be pressed against the cable 400. Thus, since the 1st protrusion part 270a and the 2nd protrusion part 270b are pressed by the caulking piece 312, the degree of adhesion | attachment to the cable 400 can be suitably adjusted with the caulking force of the caulking piece 312. FIG.

  As shown in FIG. 7, both the first protrusion 270 a and the second protrusion 270 b are formed inside the three outer water stop lips 230, 240, 250. The three outer water stop lips 230, 240, 250 are formed at positions that do not interfere with the caulking pieces 312. On the other hand, the inner water stop lip 270 (the first projecting portion 270a and the second projecting portion 270b) is formed at a position overlapping the caulking piece 312 and actively uses the pressing force of the caulking piece 312. The liquid transmitted through the cable 400 can be blocked.

  The first protruding portion 270a has a first inclined portion 272 that is inclined so as to be gradually narrowed toward the outside, a same-diameter portion 274 that is formed to have the same diameter, and is gradually narrowed toward the inside. A second inclined portion 276 that is inclined. The inclination of the first inclined part 272 is the same as the inclination of the second inclined part 276. In the longitudinal direction of the through hole 202, the length of the same diameter portion 274 is longer than the length of the through hole 202 of the first inclined portion 272 and the second inclined portion 276. Accordingly, the first projecting portion 270 a is deformed so that the entire same diameter portion 274 extends in the longitudinal direction of the through hole 202. In order to deform in this way, the contact area between the first protrusion 270a and the cable 400 can be increased, and the adhesion with the cable 400 can be enhanced. In addition, the holding force of the cable 400 in the through hole 202 can be increased.

  Further, the inner diameter of the same diameter portion 274 is preferably thinner than the outer shape of the cable 400. By pressing the inner water stop lip 270 against the cable 400, the inner water stop lip 270 can be deformed to increase the contact area with the cable 400, whereby the inner water stop lip 270 can be brought into close contact with the cable 400.

  The cable 400 generally includes a covering body such as vinyl and a conductive wire 410 made of a metal such as copper. The conductive wire 410 is covered with a covering body and is kept in an insulating state. As shown in FIG. 7, in the electric wire connection portion 304 of the terminal fitting 300, the conductive wire 410 is exposed and an electrical connection with the electric wire connection portion 304 is formed. On the other hand, at the location of the caulking piece 312, the conductive wire 410 is covered with a covering. Therefore, by caulking the caulking piece 312, the first projecting portion 270 a and the second projecting portion 270 b are pressed against a covering body such as vinyl of the cable 400. For this reason, both the 1st protrusion part 270a and the 2nd protrusion part 270b, and a covering body mutually deform | transform by press, a contact area can be increased, and adhesiveness can be improved.

  The second protruding portion 270b also has a first inclined portion 272 that is inclined so as to become gradually thinner toward the outside, a same-diameter portion 274 that is formed to have the same diameter, and a gradually narrower toward the inside. A second inclined portion 276 that is inclined.

  As described above, the inner water stop lip 270 includes the first protrusion 270a and the second protrusion 270b having the same shape. The cable 400 is inserted through the through hole 202. For this reason, the inner diameter of the same diameter portion 274 may not be reduced. In some cases, it is necessary to insert the thin cable 400 into the through hole 202. For this reason, by providing two of the first protruding portion 270a and the second protruding portion 270b as the inner water-stopping lip 270, the degree of contact of the inner water-stopping lip 270 with the cable 400, such as the contact area and The force with which the inner water stop lip 270 presses the cable 400 can be improved or maintained.

  The inner water stop lip 280 is formed outside the inner water stop lip 270. The inner water stop lip 280 has the same shape as the inner water stop lip 270. Therefore, the inner water stop lip 280 also has the first protrusion 280a and the second protrusion 280b. The first protrusion 280 a and the second protrusion 280 b are formed at positions separated from each other along the longitudinal direction of the through hole 202.

  The first protruding portion 280a and the second protruding portion 280b have a first inclined portion 282 that is inclined so as to gradually become thinner toward the outside, a same diameter portion 284 that is formed to have the same diameter, and an inward direction. And a second inclined portion 286 that is inclined so as to become gradually thinner. The first inclined portion 282 has the same shape as the first inclined portion 272, the same diameter portion 284 has the same shape as the same diameter portion 274, and the second inclined portion 286 is the second inclined portion 276. Is the same shape.

  As shown in FIG. 7, at least a part of the inner water stop lip 280 is formed at a position that interferes with a part of the three outer water stop lips 230, 240, 250. Specifically, the first protrusion 280 a is formed at a position overlapping with one outer water stop lip 230. For this reason, by inserting the waterproof plug 200 into the insertion hole 102, when the outer water stop lip 230 is pressed by the insertion hole 102, the outer water stop lip 230 presses the first protrusion 280 a. Thereby, the 1st protrusion part 280a presses on the cable 400. FIG. In this manner, the first protrusion 280a can be brought into close contact with the cable 400 by deforming the first protrusion 280a to increase the contact area with the cable 400. The outer water stop lip 230 functions in the same manner as the caulking piece 312 described above.

  In the above-described example, the case where only the first protrusion 280a is formed at a position overlapping with one outer water stop lip 230 is shown, but the first protrusion 280a and the second protrusion 280b are shown. Both may interfere with any of the outer water stop lips 230, 240, 250.

  As shown in FIG. 7, at least a part of the inner water stop lip 280 is formed at a position where it interferes with the same diameter portion 220 of the waterproof plug 200. Specifically, the second protrusion 280 b is formed at a position overlapping the same diameter portion 220. For this reason, when the cable 400 is inserted into the through-hole 202 and the waterproof plug 200 is inserted into the insertion hole 102, the second protrusion 280b is pressed by the cable 400 and pressed. Expands the same-diameter portion 220. The expanded same diameter portion 220 is pressed by the insertion hole 102. For this reason, the 2nd protrusion part 280b can make the 1st protrusion part 280a closely_contact | adhere with the cable 400 by deform | transforming and increasing a contact area with the cable 400. FIG. Furthermore, when the same-diameter portion 220 is expanded, the waterproof plug 200 is in close contact with the insertion hole 102, and the waterproof plug 200 can be accurately held in the insertion hole 102.

  In the example described above, the case where only the second protrusion 280b is formed at a position overlapping the same-diameter portion 220 is shown. However, both the first protrusion 280a and the second protrusion 280b are Alternatively, it may interfere with the same diameter portion 220.

  Thus, in the present embodiment, the first protrusion 280a is formed at a position that overlaps with one outer water stop lip 230, and the second protrusion 280b is formed at a position that overlaps with the same diameter part 220. ing. Thus, the 1st protrusion part 280a and the 2nd protrusion part 280b are formed so that it may overlap with the mutually different site | part of the waterproof plug 200. FIG. By doing in this way, the adhesiveness by the 1st protrusion part 280a and the 2nd protrusion part 280b can be adjusted, and the desired sealing performance can be achieved.

  The cable 400 is quadruply sealed by the first protrusion 270a and the second protrusion 270b of the inner water stop lip 270 and the first protrusion 280a and the second protrusion 280b of the inner water stop 280. Can be stopped. These quadruple seals can accurately prevent water from entering the connector housing 100 through the inner surface of the waterproof plug 200.

  The inner water stop lip 270 includes two first protrusions 270a and a second protrusion 270b, and the inner water stop lip 280 includes two first protrusions 280a and a second protrusion 280b. However, it is not limited to this number. For example, the inner water stop lip 280 can be made of three protrusions so as to interfere with each of the outer water stop lips 230, 240, 250. Further, the inner water stop lip 270 can be formed of a single protrusion. The length and number of the inner water stop lip 270 (one or more protrusions) can be determined according to the shape, size, and number of the caulking pieces 312.

  Moreover, although the case where the two 1st protrusion parts 270a and the 2nd protrusion part 270b and the 1st protrusion part 280a and the 2nd protrusion part 280b have the same shape was shown, it is limited to this There is no. For example, the first protrusion 270a, the second protrusion 270b, the first protrusion 280a, and the second protrusion 280b may be formed to have different inner diameters. For example, the inner diameter of at least one protrusion can be smaller than the other. By doing in this way, the adhesiveness with respect to the cable 400 can be improved more and it can seal more appropriately.

  Further, like the outer water stop lips 230, 240, 250, some of the inclined portions can be formed to have different inclinations. The adhesion to the cable 400 can be further increased, and the cable 400 can be hardly displaced along the longitudinal direction with respect to the waterproof plug 200, and the holding force of the cable 400 can be increased.

  Furthermore, the distance between the two first protrusions 270a and 270b and the distance between the two first protrusions 280a and 280b are substantially equal, and the distance is Although the case where it is shorter than the distance between the 2nd protrusion part 270b and the 1st protrusion part 280a was shown, it is not limited to this.

  The inner water stop lip 270 and the inner water stop lip 280 described above are deformed to increase the contact area with the cable 400 and improve the adhesion, thereby allowing the liquid flowing through the cable 400 and the through hole 202 to flow in. It only has to be prevented. If the outer water stop lips 230, 240, 250 are deformed to increase the contact area with the insertion hole 102 and improve the adhesion, it is possible to prevent the liquid flowing through the waterproof plug 200 and the insertion hole 102 from flowing in. Good.

<< Relationship between water blocking wall 104 and waterproof plug 200 >>
As described above, the water blocking wall 104 is formed with the insertion hole 106 having a substantially circular through hole shape. The waterproof plug 200 includes a waterproof plate 210 having a thin and substantially cylindrical shape. The inner diameter of the insertion hole 106 of the water blocking wall 104 and the outer diameter of the waterproof plate 210 are substantially the same. The waterproof plug 200, the terminal fitting 300, and the cable 400 may be inserted through the insertion hole 106 of the water blocking wall 104 and inserted into the cavity 110. Therefore, it is preferable that the inner diameter of the insertion hole 106 of the water blocking wall 104 is smaller than the outer diameter of the waterproof plate 210.

  Regardless of the relationship between the inner diameter of the insertion hole 106 of the water blocking wall 104 and the outer diameter of the waterproof plate 210, the water blocking wall 104 is positioned substantially concentrically close to the front of the waterproof plate 210. That's fine. More preferably, the water blocking wall 104 may be positioned substantially concentrically in contact with the waterproof plate 210. More preferably, the entire outer periphery of the waterproof plate 210 may be covered with the insertion hole 106 of the water blocking wall 104 so that the water blocking wall 104 is positioned substantially concentrically with the waterproof plate 210.

  In this way, as shown in FIG. 6, the high-pressure water flow toward the terminal fitting insertion surface 108 can be weakened, and washing water or the like can be prevented from entering the connector housing 100. it can. As described above, the waterproof plug 200 is formed with the outer water stop lips 230, 240, 250, the inner water stop lips 270, 280, and the like. For this reason, even if water or the like adheres to the terminal fitting insertion surface 108 because the water for washing cannot be completely blocked by the water stop wall 104, the outer water stop lips 230, 240, 250, the inner water stop lip, etc. 270 and 280 can sufficiently prevent entry.

  Thus, the water stop wall 104 should just be able to reduce the quantity of the water flow which goes to the terminal metal fitting insertion surface 108, or to weaken the force of a water flow. Specifically, it is sufficient that the water flow can be reflected by the water blocking wall 104 or can be dispersed around the water flow.

  The waterproof plate 210 of the waterproof plug 200 is located between the terminal fitting insertion surface 108 of the connector housing 100 and the water blocking wall 104. The water blocking wall 104 is connected by a support portion 112. The support part 112 functions as a spacer for arranging the waterproof plate 210. In other words, the waterproof plate 210 is disposed in a gap formed between the terminal fitting insertion surface 108 of the connector housing 100 and the water blocking wall 104. Therefore, the terminal fitting insertion surface 108 and the waterproof plate 210 are brought into contact with each other so that the thickness of the support portion 112 is slightly larger than that of the waterproof plate 210, and the waterproof plate 210 and the water blocking wall 104 are brought into contact with each other. It is preferable to prevent penetration.

  As described above, the waterproof plate 210 covers the opening 120 of the insertion hole 102. As described above, the waterproof plate 210 can prevent the opening 120 of the insertion hole 102 from being directly opened to the outside of the connector housing 100. The waterproof plate 210 can prevent cleaning water or the like from directly entering the opening 120 of the insertion hole 102.

<< Terminal fitting 300 >>
The terminal fitting 300 has a substantially rectangular shape (substantially rectangular shape, substantially rectangular shape) as a whole when viewed from the front (front), and is made of a conductive metal. As shown in FIG. 7, the terminal metal fitting 300 has a long shape and is composed of a main body portion 302 having an elongated rectangular tube shape along the longitudinal direction, and a wire connection portion 304 connected to the main body portion 302. Become.

  A stabilizer 306 is provided on the upper side of the main body 302. The stabilizer 306 has a plate-like shape protruding upward. A lance locking portion 308 that is locked by a lance 114 (see FIG. 3) is provided at the front end portion of the outer wall where the stabilizer 306 is installed. A retainer locking portion 310 is provided at a rear end portion of the main body portion 302 by a retainer 116 (see FIG. 3). A caulking piece 312 is provided in the electric wire connection portion 304.

DESCRIPTION OF SYMBOLS 10 Waterproof connector 100 Connector housing 104 Water stop wall 200 Waterproof plug 210 Waterproof board 270,280 Inner water stop lip 300 Terminal metal fitting 400 Cable

Claims (5)

A waterproof connector having a connector housing provided with a cavity for accommodating a terminal fitting to which a cable is connected,
An insertion surface formed with a cable insertion hole through which the cable communicates with the cavity;
A protective wall provided facing the insertion surface;
A waterproof through hole through which the cable is inserted, and a waterproof plug provided in the cable insertion hole,
The waterproof plug protrudes from the cable insertion hole, has an end portion of the waterproof plug, and has a flange portion having a hook shape,
The flange portion is a waterproof connector located between the protective wall and the insertion surface . Before SL protection wall has a protection through hole cable is inserted,
The waterproof connector according to claim 1, wherein the flange is exposed in the protective through hole.   The waterproof connector according to claim 1, wherein the protective wall is formed integrally with the connector housing via a support portion. The diameter of the collar part is formed larger than the diameter of the cable insertion hole so that the collar part can be held on the insertion surface,
The waterproof through hole has a first water stop lip and a second water stop lip formed at different positions along the longitudinal direction of the waterproof through hole,
The first water stop lip and the second water stop lip have at least one protrusion that protrudes toward the inside of the waterproof through-hole,
The waterproof plug has the same diameter portion formed along the waterproof plug between the flange portion and the first water stop lip,
The waterproof connector according to claim 1, wherein the protruding portion of the second water stop lip is formed at a position overlapping the same diameter portion . The first water stop lip has a plurality of protrusions formed at first intervals along the longitudinal direction of the waterproof through-hole,
The second water stop lip has a plurality of protrusions formed at the first interval along the longitudinal direction of the waterproof through hole,
The distance between the protrusions formed closest to the plurality of protrusions of the first water stop lip and the plurality of protrusions of the second water stop lip is greater than the first interval. The waterproof connector according to any one of claims 1 to 4, wherein the waterproof connector is long .