JP7564708B2 - Waterproof Connector - Google Patents

Description

The present invention relates to a waterproof connector that ensures a waterproof connection to a mating connector.

Holter electrocardiographs have been known for some time as medical electronic devices that obtain electrocardiograms as biometric information not only at rest but also during exercise and daily life. Electrodes worn by the subject are connected to the Holter electrocardiograph, and the electrocardiogram of the subject during daily life can be collected and measured via the electrodes.

The Holter ECG monitor, together with the electrodes, must be worn by the subject while recording the subject's electrocardiogram for an extended period of time. For this reason, it must be waterproof enough to withstand everyday use, so that it can withstand raindrops and splashes of water when washing hands, as well as water that can be used in the shower or bath.

For example, as shown in Patent Document 1, a configuration is known in which a waterproofing treatment is applied to the connection part where the mating connector on the electrode side is inserted and fitted and the connection terminals are connected to each other in a Holter electrocardiograph.

Specifically, the connector on the device body side of Patent Document 1 has a recessed housing portion into which the insertion portion of the mating connector is inserted, and a planar packing with multiple rod-shaped terminals inserted therethrough is disposed on the bottom surface of this housing portion. Meanwhile, a mating terminal corresponding to the rod-shaped terminal is provided on the tip surface of the insertion portion of the mating connector. With this configuration, when the insertion portion is inserted into the housing portion, the tip surface presses the packing toward the bottom surface, maintaining watertightness between the tip surface and the bottom surface, and the connection between the terminals is maintained in a state in which waterproofing is ensured.

JP 2011-76857 A

However, in the above configuration, where the insertion part of the mating connector is inserted into the recessed housing of the connector to establish an electrical connection, watertightness is ensured by inserting the insertion part into a closed space and pressing the packing. For this reason, when the area to be pressed against the packing becomes wider, such as when there are a large number of sets of terminals to be joined, it becomes necessary to press the packing with an even greater pressing force, which creates the problem of laborious work.

The present invention was made in consideration of these points, and aims to provide a waterproof connector that can be easily and reliably connected to a mating connector in a watertight manner without increasing the pushing force, even if the area that needs to be made watertight when pushing to connect is wide.

One aspect of the waterproof connector of the present invention is as follows:
a recessed portion into which an insertion portion of a mating connector is removably inserted;
a connection terminal disposed in the recess and adapted to come into contact with a connection terminal of the insertion portion;
a packing portion having a cylindrical portion surrounding a connection area between the connection terminal and the connected terminal within the recessed portion, and configured such that, when a tip of the cylindrical portion is pressed in an insertion direction while the inside of the cylindrical portion is sealed by abutment between the tip of the cylindrical portion and the insertion portion, a base end of the cylindrical portion moves to the rear side in the insertion direction ;
The packing portion has a main body portion extending outward from the base end, and the main body portion forms a space between the bottom surface of the concave portion at the rear side in the insertion direction, within which the base end can move, and is configured to deform so as to compress the space, thereby moving the base end .

According to the present invention, even if the area to be made watertight when pushing to connect is wide, it is possible to easily and reliably connect to the mating connector in a watertight manner without increasing the pushing force.

1 is an external perspective view showing a connected state of a connector according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 11 is a perspective view showing the internal configuration of the connector with the second packing portion removed. FIG. FIG. FIG. 7 is a cross-sectional view taken along line BB in FIG. 6. 13 is an enlarged view showing a contact portion between the second packing portion and the mating connector via the contact tubular portion. FIG. 5A to 5C are cross-sectional views showing the operation of the connector according to the embodiment of the present invention. 1 is a cross-sectional view showing a connection between a connector according to an embodiment of the present invention and a mating connector.

The following describes in detail the embodiments of the present invention with reference to the drawings.

Figure 1 is an external perspective view showing the connected state of a waterproof connector according to one embodiment of the present invention. In this embodiment, the terms front, rear, left, and right refer to the opening side of the connector as the front, and the depth direction side as the rear. The expressions related to directions such as up, down, left, right, front, and rear used to explain the configuration and operation of each part of the connector are relative, not absolute.

The connector 10 according to this embodiment joins, for example, a joint 10a that is joined to a device main body (not shown) and a mating connector 20 that is connected to a bioinformation electrode (not shown) that acquires bioinformation. Specifically, the connector 10 is an intermediate connector that relays the connection between the bioinformation electrode and the device main body, for example, an electrocardiograph main body, and can be applied to any connector that can be connected to the mating connector 20 while ensuring waterproofing. The connector 10 according to this embodiment is a connector that has sufficient waterproofing and dustproofing when connected to the mating connector.

The connector 10 shown in FIG. 1 constitutes a connector device 1 that mates with a mating connector 20.

FIG. 2 is a side view of the connector, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
In this embodiment, the connector 10 is a so-called concave socket type, and the mating connector 20 is a convex plug type that fits into the concave of the socket. Note that the connector 10 may be a plug type, and the mating connector 20 may be a socket type.

Figure 4 is an oblique view of the mating connector, and Figure 5 is an oblique view showing the internal structure of the connector with the second packing portion 15 removed.

As shown in Figures 3 and 4, the mating connector 20 of this embodiment has an insertion section 23 that is inserted into the connector 10. The insertion section 23 is provided at the tip of the main body section 231. Note that a lead 241, which is part of the flexible printed circuit board 24 that is connected to the bioinformation electrode, is led out from the base end side of the main body section 231.

The tip surface 21 of the insertion portion 23 is provided with an insertion hole 233 having a connection terminal 22 therein. The insertion hole 233 is formed along the insertion direction, i.e., the connection direction with the connector 10, and corresponds to the connection terminal 14 on the connector 10 side. When the connection terminal 14 on the connector 10 side is inserted into the insertion hole 233, the connection terminal 22 abuts against the connection terminal 14 in the insertion direction and is electrically connected.

The connection terminal 22 is formed in a planar shape. Specifically, the mating connector 20 is configured with a flexible printed circuit board 24 having the connection terminal 22 at a tip end portion 242 inside the first housing 20a that constitutes the outer shape of the insertion portion 23, and a second housing 20b (see FIG. 3). Inside the first housing 20a, the second housing 20b is attached with the tip end portion 242 of the flexible printed circuit board 24 bent to the outer surface. In the mating connector 20, the planar connection terminal 22 is arranged on the tip end surface 21 side at a portion facing the insertion hole 233.

The mating connector 20 is also provided with a flexible engagement claw 236. The engagement claw 236 is provided so as to protrude away from the outer surface of the insertion portion 23, in this case the top surface of the first housing 20a, toward the main body portion 231 side, which is the base end side (the removal direction, which is the opposite direction to the insertion direction).

When the insertion portion 23 is inserted into the recessed portion 12 of the connector 10, the engaging claw 236 comes into contact with the upper surface of the recessed portion 12 and is pressed against the upper surface of the insertion portion 23, becoming folded (see FIG. 11). When the terminals 14, 22 are connected to each other within the recessed portion 12, the biasing force of the engaging claw 236 is released within the engaged portion 16 on the connector 10 side, and the engaging claw 236 engages with the engaged portion 16. This limits the movement of the mating connector 20 in the direction of removal from the connector 10, and maintains the connected state.

On the other hand, the connector 10 of this embodiment has a recessed portion 12 formed in a recessed shape into which the insert portion 23 shown in FIG. 3 is inserted, and by engaging with the insert portion 23 inserted into this recessed portion 12, the terminals (connected terminal 14, connecting terminal 22) are joined in a waterproof state. The joint portions including the terminals are made watertight and dustproof by the first packing portion 18 arranged inside the recessed portion 12, and in addition, the second packing portion 15 ensures watertightness and dustproofness.

Specifically, the connector 10 has a connector body 13 having a joint portion 10a and a recessed portion 12, a connected terminal 14 that is disposed within the recessed portion 12 and joins with a connection terminal 22 of the insertion portion 23, a first packing portion 18, a second packing portion 15, and an escape space portion 19.

The connector body 13 has a recessed portion 12 that opens at one end and a joint portion 10a at the other end. The joint portion 10a is configured so that it can be connected to the device body in a direction different from the opening direction of the recessed portion 12.

The insertion portion 23 is inserted into the recessed portion 12 through the opening. The recessed portion 12 has an engaged portion 16 that engages with an engaging claw 236 of the insertion portion 23. The recessed portion 12 has the engaged portion 16 on one side (here, the upper side) of the peripheral wall surface along the insertion direction, and on the bottom surface, multiple connection terminals 14 are arranged in a row and uniformly protrude toward the opening side. The bottom surface of the recessed portion 12 (the surface at the rear in the insertion direction) is formed by the internal bottom portion 132 of the connector body 13 (the surface at the rear in the insertion direction).

When viewed from the opening side of the recessed portion 12 in the connector body 13, the internal bottom 132 is located at the back side of the recessed portion 12, that is, on the insertion direction side. The internal bottom 132 is covered by the second packing portion 15 that is located on the bottom surface portion of the recessed portion 12. Between this second packing portion 15, the internal bottom 132 has an escape space portion 19, which is a gap that allows for deformation of the second packing portion 15 (specifically, movement of the base end of the cylindrical recess of the second packing portion 15).

Multiple connected terminals 14 are inserted and arranged in the inner bottom 132 so as to extend along the insertion direction. The connected terminals 14 protrude from the inner bottom 132 toward the opening side, and the connected terminals 14 also pass through the second packing portion 15.

A ring-shaped (here, elliptical) guide groove 1322 is formed on the outer surface of the inner bottom 132 so as to surround the protruding connected terminal 14, and the positioning leg 155 of the second packing part 15 is inserted into the guide groove 1322. That is, the guide groove 1322 is provided on the bottom surface of the recessed part 12 and guides the movement of the second packing part 15 toward the back side in the insertion direction. The flange part (outer peripheral cylindrical part) 1552 of the positioning leg 155, which is the outer peripheral part of the packing main body 1522 (main body part) described later, is watertightly engaged with the guide groove 1322. As a result, when the second packing part 15 is provided in the recessed part 12, it functions as a positioning of the second packing part 15, making it difficult to come off and facilitating the assembly of the product itself. The relationship between the inner bottom 132 and the second packing part 15 will be described in detail later.

The engaged portion 16 has a space 162 within the recessed portion 12 that releases the deformation of the engaging claw 236 of the mating connector 20, and engages with the engaging claw 236 that has been restored to a position away from the outer surface of the insertion portion 23, restricting movement of the mating connector 20 in the removal direction.

The engaged portion 16 has a space 162 that houses the engaging claw 236, a release button 164 for pressing down and releasing the engaging claw 236, and a biasing member 166 that biases the release button 164 in the direction of engaging the engaging claw 236.

The biasing member 166 biases the release button 164 to move from a released state (a state in which the engagement claw 236 is positioned in a position disengaged from the space 162) to an engaged state (a state in which the engagement claw 236 is positioned in the space 162). In this embodiment, the biasing member 166 uses a coil spring to bias the release button 164 upward.

By pressing the release button 164 inwardly of the connector body 13, the bottom surface of the release button 164 presses the engagement claw 236 within the recessed portion 12. This releases the engagement state of the engagement claw 236 with the engaged portion 16, making it possible to remove the mating connector 20 from the connector 10.

The connected terminal 14 is a rod-shaped body, arranged along the insertion direction, i.e., the contact direction, and is freely expandable in the insertion direction. The connected terminal 14 is, for example, a spring probe. The connected terminal 14 has a plunger portion 142 with a tip protruding from inside the cylindrical body 141 to one end side of the cylindrical body 141, and the other end side of the cylindrical body 141 is closed and a rod-shaped portion 141a is provided protruding in the extension direction. The other end side of the plunger portion 142 is arranged so that it can slide freely within the cylindrical body 141. The plunger portion 142 is biased toward one end side by a spring 143 installed between the plunger portion 142 and the other end of the cylindrical body 141 within the cylindrical body 141.

The connected terminal 14 has a cylindrical body 141 fixed to the inner bottom 132 with the plunger portion 142 and rod-shaped portion 141a protruding in the insertion direction. The plunger portion 142 passes through the second packing portion 15 and protrudes into the recessed portion 12.

When the tip of the connected terminal 14 abuts against the connecting terminal 22, even if it is pressed in the opposite direction to the abutment direction, it can move while still ensuring a reliable contact state with the second packing portion 15 inserted.

In this embodiment, the connection terminal 14 abuts against an insertion hole 233 provided on the tip surface of the insertion portion 23 of the mating connector 20. The connection terminal 14 is pressed against the connection terminal 22 in the insertion portion 23 within the insertion hole 233 and reliably contacts the connection terminal 22.

The first packing portion 18 is an annular member disposed on the inner circumferential surface of the recessed portion 12, against which the outer circumferential surface of the insertion portion 23 slides, ensuring watertightness between this outer circumferential surface and the recessed portion 12. As a result, the contact area between the tip surface 21 of the insertion portion 23 and the bottom surface (internal bottom portion 132) of the recessed portion 12 via the second packing portion 15 is sealed.

Figure 6 is a plan view of the second packing part 15, Figure 7 is a rear perspective view of the second packing part 15, and Figure 8 is a cross-sectional view along line B-B in Figure 6.

As shown in FIG. 3, the second packing portion 15 is disposed in the connector body 13 at the bottom of the recessed portion 12 so as to surround the connected terminal 14, and is disposed with an escape space 19 on the rear side.

The second packing portion 15 has a cylindrical portion 15a (see FIG. 8) that surrounds the connection area S between the connection terminal 22 and the connected terminal 14 within the recessed portion 12. In this embodiment, the cylindrical portion 15a corresponds to the tightly fitting cylindrical portion 158 and the portion that surrounds the through hole 154 in the packing body 152.

When the tip 15b of the cylindrical portion 15a (see FIG. 8) (tip 15b of the tightly fitting cylindrical portion 158) is pressed in the insertion direction while sealing the inside of the cylindrical portion by abutting against the insertion portion 23, the base end of the cylindrical portion (open end 15c of the through hole 154 on the back side of the packing body 152) moves backward in the insertion direction. The base end 15c of the cylindrical portion 15a moves into the escape space portion 19.

The second packing portion 15 is arranged to surround the connection area S between the connecting terminal 22 and the connected terminal 14, or between the connecting terminal 22 and the connected terminal 14, and abuts against the insertion portion 23 moving in the insertion direction to watertightly seal the connection area and ensure waterproofing and dustproofing.

The second packing portion 15 is an elastic body, and by deformation, it seals the space between the tip surface 21 of the insertion portion 23 in the recessed portion 12 and the internal bottom portion 132 of the connector body 13, which is the bottom surface of the recessed portion 12, with both terminals 14, 22 joined together, ensuring watertightness and dustproofness.

The second packing portion 15 is arranged to watertightly surround the connected terminal 14, the connecting terminal 22, and at least one of the joints between the recessed portion 12 and the insertion portion 23.

The second packing part 15 is preferably made of a flexible, waterproof rubber-based material such as silicone rubber, for example, as an elastic material such as a flexible resin. The second packing part 15 has a packing body 152, a through hole 154, a positioning leg part 155, an engagement part 156, and a tight fitting tube part 158. The positioning leg part 155, together with the engagement part 156, can be said to be the outer periphery of the center part of the packing body 152.

The packing body 152 extends from the base end of the tubular portion to the outside (in a direction perpendicular to the insertion direction), and forms an escape space 19 between the inner bottom surface 132 (the bottom surface of the recessed portion 12) at the rear side in the insertion direction, allowing the base end to move. This packing body 152 is positioned in the connector body 13 so as to cover the inner bottom portion 132 that is further rear than the bottom surface of the recessed portion 12, and is positioned so as to leave the escape space 19 open.

The packing body 152 deforms to compress the escape space 19, moving the base end of the tubular portion, i.e., the opening edge of the through hole 154 on the rear side. This allows the tightly fitting tubular portion 158 to come into contact with the tip surface 21 of the leading insertion portion 23 via the packing body 152 in a more tightly fitting state.

The packing body 152 has a shape corresponding to the rectangular internal bottom 132 of the connector body 13. In this embodiment, the internal bottom 132 and the bottom surface portion of the recessed portion 12 are also rectangular, so the packing body 152 is formed in a rectangular shape.

The connection terminal 14 is inserted through the through hole 154. The through hole 154 is provided at a position corresponding to the connection terminal 14, penetrating the packing body 152 in the thickness direction (the same as the insertion direction). The terminal that passes through the through hole 154 may be a rod-shaped terminal that is the connection terminal 22 of the mating connector 20, and the connection terminal may be connected to the rod-shaped connection terminal of the mating connector that passes through the through hole 154 on the back side (rear side) of the packing body 152.

The positioning leg 155 is a cylindrical body that protrudes from the rear side, i.e., the surface on the insertion direction side, of the packing body 152. The positioning leg 155 is fitted into the guide groove 1322 of the inner bottom 132 to be positioned and to seal the inside.
The positioning legs 155 come into close contact with the outer periphery of the recessed portion (here, the outer surface 1322a of the guide groove 1322 of the inner bottom portion 132) so as to seal the escape space 19 that communicates with the inside of the cylindrical portion.

The flange portion 1552 protruding outward is provided on the outer periphery of the tip of the positioning leg portion 155. The flange portion 1552 deforms and comes into close contact with the inner periphery of the guide groove 1322 on the outside of the flange portion 1552. In this way, the flange portion 1552 watertightly separates the front side (the surface on the opening side) of the packing body 152 from the back side. The flange portion 1552 also prevents dust from entering between the packing body 152 and the inner bottom portion 132, ensuring dustproofness.

The engagement portion 156 supports the packing body 152 in the connector body 13 (specifically, the internal bottom 132) while being spaced from the bottom surface portion (internal bottom 132) of the recessed portion 12 so as to form the escape space portion 19. When the second packing portion 15 is attached to the internal bottom 132 so as to cover the opening direction of the recessed portion 12, the engagement portion 156 engages with the internal bottom 132, easily forming the escape space portion 19 between the surface of the internal bottom 132 and the packing body.

In this embodiment, the engagement portion 156 is provided at a position that protrudes further toward the rear side than the rear surface of the packing body 152, and engages with the outer periphery or a part of the outer periphery of the inner bottom 132.

The engagement portions 156 are provided, for example, to protrude from both the left and right ends of the packing body 152, and engage with the outer edge portions 1324 on the left and right ends that are spaced apart in the longitudinal direction, which is a direction perpendicular to the insertion direction in the inner bottom 132, behind the back surface of the packing body 152.

As shown in FIG. 3, the engagement portion 156 engages with the outer edge portion 1324 of the inner bottom portion 132, thereby positioning the packing body 152 as the bottom surface of the recessed portion 12 with the escape space portion 19 open so as to cover the inner bottom portion 132 at the back side of the recessed portion 12. The packing body 152 is positioned perpendicular to the insertion direction so as to face the outer surface of the inner bottom portion.

The escape space 19 is a space that allows movement when the second packing part 15 elastically deforms and protrudes toward the rear, specifically, when the center part of the packing body 152 moves toward the rear.

The escape space 19 is a space formed on the back side of the portion (center) of the packing body 152 where the through hole 154 through which the connection terminal 14 is inserted is formed.

Since the tight fitting tube portion 158 is part of the second packing portion 15, it is integrally molded from the same elastic material as the packing body 152 and is deformable. When the mating connector 20 is pressed against the second packing portion 15, the tight fitting tube portion 158 tightly fits against the mating connector 20, ensuring watertightness with the mating connector.

The tight fitting tube portion 158 is a cylindrical body that protrudes from the surface side of the packing body 152, and its internal space is provided so as to be continuous with the through hole 154.

Specifically, the tight fitting tube portion 158 is in tight contact with the opening edge of the insertion hole 233 at the tip surface 21 of the insertion portion 23, and provides a watertight connection between the insertion hole 233 and the through hole 154.

As shown in Figures 6 and 8, the tightly fitting tube portion 158 has a tubular body 1582 that protrudes from the surface side of the packing body 152 so as to surround the through hole 154, and a tip portion 1584 whose outer diameter decreases toward the tip side.

FIG. 9 is an enlarged view showing the contact portion between the second packing portion 15 and the mating connector 20 via the contact tube portion 158. As shown in FIG.
In the tight fitting tube portion 158, the tip portion 1584 has a tapered shape with an outer diameter that becomes smaller toward the tip side. This makes the tip portion 1584 easily deformed when it comes into contact with the mating connector 20, and when pressed by the mating connector 20, the tip portion 1584 easily deforms and comes into tight contact with the contact portion of the mating connector 20.

In addition, in this embodiment, the contact portion of the mating connector 20 is the opening edge 2332 of the insertion hole 233 on the tip surface 21, as shown in Figures 3 and 9, and is formed in a countersunk shape. In other words, the inner diameter of the opening edge 2332 becomes smaller toward the inside of the mating connector 20.

When the insertion portion 23 is inserted into the recessed portion 12 of the connector body 13 to connect both terminals 14, 22, the tip end 1584 of the tight fitting tube portion 158 comes into contact with the opening edge portion 2332, resulting in contact and tight fitting over a larger number of contact surfaces. This increases the contact area compared to when the tip end 1584 is in contact with the tip surface 21 perpendicularly, thereby improving watertightness.

In this embodiment, the tip 15b of the tubular portion 15a of the second packing portion 15 is described as the tip 1584 of the tightly fitting tube portion 158. However, this is not limited to the above. For example, the second packing portion 15 may be configured without the tightly fitting tube portion 158, with the entire front side of the packing body 152 of the second packing portion 15 tightly fitting to the tip surface 21 of the insertion portion 23 and surrounding the connection area S.

In this embodiment, the connector body 13 of the connector 10 is provided with the same number of connected terminals 14 as the connection terminals (surface contact portions) 22 of the mating connector 20, and here, a large number of terminal sets (two rows of five) are provided on the bottom portion and tip surface 21 of the concave portion 12.
Therefore, when inserting the insertion portion 23 of the mating connector 20 into the recessed portion 12 of the connector body 13, the air inside is difficult to escape, making it difficult for the insertion portion 23 to engage.
In contrast to this, in this embodiment, an escape space 19 is provided on the rear side of the close-contact tube portion 158 .

FIG. 10 is a cross-sectional view showing the operation of the connector according to the embodiment of the present invention.
When the second packing portion 15 is pressed against the rear side of the recessed portion 12 by the tip surface 21 of the insertion portion 23, the tight fitting tube portion 158 is deformed and pressed against the rear side. Then, the packing body 152 of the packing portion 15 is deformed at the rear side, that is, the escape space portion 19 on the back side, and while the second packing portion 15 is deformed, they can engage with the insertion portion 23 while ensuring watertightness.

When inserting the insertion portion 23 into the recessed portion 12 to join in this way, there may be cases where a large number of terminal sets are to be connected, causing a large reaction force from the packing portion provided on the bottom surface, making it difficult to achieve the joining state shown in Figure 3. In the present invention, an escape space 19 is formed on the rear side of the second packing portion 15, particularly on the rear side of the tight fitting tube portion 158, so that the second packing portion 15 can be deformed to easily connect the two in a watertight manner.

In the connector 10 of this embodiment, the packing body 152 of the second packing part 15 has an escape space 19 on the rear side thereof, but as long as the packing body 152 of the second packing part 15 can be deformed toward the rear side, it may be configured in any way, and the escape space 19 may not be required. In other words, the second packing part 15 may be configured such that when the tip of the tubular part 18 is pressed in the insertion direction while sealing the inside of the tubular part (closely fitting tubular part 158), the base end of the tubular part moves toward the rear in the insertion direction.

When releasing the engagement, simply pressing the release button 164 positions the engagement claw 236 outside the space 162, releasing the engagement, and easily disconnecting the mating connector 20 from the connector 10.

The above describes an embodiment of the present invention. Note that the above description is an example of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. In other words, the description of the configuration of the device and the shape of each part is one example, and it is clear that various modifications and additions to these examples are possible within the scope of the present invention.

The connector of the present invention has the effect of being able to easily and reliably connect to a mating connector in a watertight manner without increasing the pushing force, even if the area that needs to be made watertight when pushing the connector to connect is wide, making it useful as a portable medical device, etc.

REFERENCE SIGNS LIST 1 Connector device 10 Connector 10a Joint portion 12 Recessed portion 13 Connector body 14 Connected terminal 15 Second packing portion (packing portion)
15a Cylindrical portion 15b Tip 15c Base end 16 Engaged portion 18 First packing portion 19 Escape space (space)
20 Mating connector 21 Bottom surface portion 21 Tip surface 22 Connection terminal 23 Insertion portion 24 Flexible printed circuit board 241 Lead 242 Tip side portion 132 Inner bottom portion 141 Cylindrical main body 141a Rod-shaped portion 142 Plunger portion 143 Spring 152 Packing main body (main body portion)
154 Through hole 155 Positioning leg portion (outer periphery)
156 Engagement part (outer periphery)
158 Close fitting cylinder portion 162 Space 164 Release button 166 Pressing member 231 Main body portion 233 Insertion hole 236 Engagement claw 1322 Guide groove 1324 Outer edge portion 1552 Flange portion (outer peripheral cylinder portion)
1582 Cylindrical body 1584 Tip portion 2332 Opening edge portion

Claims (5)

a recessed portion into which an insertion portion of a mating connector is removably inserted;
a connection terminal disposed in the recess and adapted to come into contact with a connection terminal of the insertion portion;
a packing portion having a cylindrical portion surrounding a connection region between the connection terminal and the connected terminal within the recessed portion, the packing portion being configured such that, when a tip of the cylindrical portion is pressed in an insertion direction while the inside of the cylindrical portion is sealed by abutment between the tip of the cylindrical portion and the insertion portion, a base end of the cylindrical portion moves toward the rear in the insertion direction;
having
The packing portion has a main body portion extending outward from the base end,
the main body forms a space between the bottom surface of the recessed portion and a rear side in the insertion direction, in which the base end is movable, and the main body deforms to compress the space, thereby moving the base end.
Waterproof connector. an outer periphery of the main body portion supports the main body portion in a state spaced apart from the bottom surface portion of the recessed portion so as to form the space portion;
2. The waterproof connector according to claim 1 . an outer periphery of the main body is in close contact with an outer periphery of the recessed portion so as to seal the space communicating with the inside;
3. The waterproof connector according to claim 1 or 2 . a guide groove that guides movement of the packing portion toward the rear in the insertion direction is provided on a bottom surface of the recessed portion,
An outer circumferential portion of the main body is provided with an outer circumferential cylindrical portion that is inserted into the guide groove and engages with the guide groove in a watertight manner.
The waterproof connector according to any one of claims 1 to 3 . The tip of the cylindrical portion has a tapered shape in cross section.
The waterproof connector according to any one of claims 1 to 4.

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