JP2013002518A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of restraining sticking of liquid to respective connecting surfaces of a male type connector and a female type connector.SOLUTION: This connector includes the male type connector 10 having a male side case 18 having a flow passage for making the liquid flow and a male side valve mechanism 25 provided in the male side case 18, and the female type connector 11 having a female side case 33 having a flow passage for making the liquid flow and a female side valve mechanism 37 provided in the female side case 33, and puts the male side valve mechanism 25 and the female side valve mechanism 37 in a closing state when releasing the connection of the male type connector 10 and the female type connector 11. The connector includes a connecting seal part 22 for blocking up a clearance between connecting surfaces of the male type connector and the female type connector from the flow passage side of the male type connector 10 and the flow passage side of the female type connector 11, when connecting the male type connector 10 and the female type connector 11.

Description

  The present invention relates to a connector for connecting a plurality of flow paths through which a liquid flows.

  Some connectors for connecting a plurality of flow paths include a female connector and a male connector each having a valve mechanism. As this type of connector, as shown in FIG. 10, a valve body 101, a male pipe joint 100 having a spring 102 for biasing the valve body toward the opening side, a movable valve body 103, and the movable valve body 103 are provided. There is a connector provided with a female pipe joint 105 having a spring 104 biased to the opening side (see, for example, Patent Document 1). FIG. 10 shows a state where the pipe joints 100 and 105 are connected and the flow paths are communicated.

  When the pipe joints 100 and 105 are not connected, the valve body 101 of the male pipe joint 100 is biased to a position that closes the opening of the cylindrical body 106 in which the valve body 101 is accommodated, so that the female pipe joint The movable valve body 103 of 105 is urged to a position that closes the opening of the cylindrical body 107 in which the movable valve body 103 is accommodated.

  When connecting the pipe joints 100 and 105, the openings of the cylindrical bodies 106 and 107 are opposed to each other, and the cylindrical body 106 of the male pipe joint 100 is brought into contact with the movable valve body 103 of the female pipe joint 105. At the same time, the valve body 101 of the male pipe joint is brought into contact with the valve rod 108 fixed in the female pipe joint 105 so as not to move. Then, the male pipe joint 100 is inserted into the cylindrical body 107 of the female pipe joint 105.

  When the male pipe joint 100 is inserted into the female pipe joint 105, the valve body 101 of the male pipe joint 100 is pushed into the cylindrical body 106 of the male pipe joint 100 by the valve rod 108 of the female pipe joint 105. . At the same time, the movable valve body 103 of the female pipe joint 105 is pushed into the cylinder body 107 of the female pipe joint 105 by the cylinder body 106 of the male pipe joint 100. As described above, the valve body 101 of the male pipe joint 100 and the movable valve body 103 of the female pipe joint 105 are displaced, whereby the flow path of the male pipe joint 100 and the female pipe joint 105 are provided. The flow path is communicated, and the liquid can pass through the connector.

  Further, when releasing the connection of the connector, the male pipe joint 100 is pulled out from the female pipe joint 105, and the cylindrical body 106 of the male pipe joint 100 is separated from the movable valve body 103 of the female pipe joint 105. At the same time, the valve body 101 of the male pipe joint 100 is separated from the valve rod 108 of the female pipe joint 105. As described above, when the male pipe joint 100 is extracted from the female pipe joint 105, the valve body 101 and the movable valve body 103 are displaced to positions where the openings of the cylindrical bodies 106 and 107 are respectively closed.

Japanese Patent No. 3686856

  By the way, in a state where the male pipe joint 100 and the female pipe joint 105 are connected, the movable valve body 103 is pressed against the cylinder body 106 of the male pipe joint 100 by the urging force of the spring 104. The liquid may enter a slight gap generated between the movable valve body 103.

  As described above, when the liquid flows into the gap formed between the connection surfaces of the pipe joints 100 and 105, when the connection between the male pipe joint 100 and the female pipe joint 105 is released, the connection is established. The liquid is in the vicinity of the surface. At least the end face of the cylindrical body 106 of the male pipe joint 100 is exposed to the outside when the connection is released, so that the liquid adhering to the end face attaches to the surrounding object or the liquid adheres to it. There is a problem that dust is easily adsorbed to the end face. For this reason, when the connection of a connector is cancelled | released, suppressing the adhesion of the liquid to those connection surface vicinity was requested | required.

  This invention is made | formed in view of the said problem, The objective is to provide the connector which can suppress that a liquid adheres to each connection surface of a male connector and a female connector. .

  In order to solve the above problems, the invention according to claim 1 is a male connector having a male side case having a flow path through which a liquid flows and a male side valve mechanism provided in the male side case; A female connector having a female case having a flow path for liquid and a female valve mechanism provided in the female case, and when the connection between the male connector and the female connector is released In the connector that closes the male valve mechanism and the female valve mechanism, when the male connector and the female connector are connected, the flow of the male case and the flow of the female case are The gist of the present invention is that a seal portion for closing the gap between the connection surfaces from the road side is provided.

  According to the first aspect of the present invention, since the seal portion that closes the connection surfaces on which the male connector and the female connector abut each other from the flow path side is provided, when the male connector and the female connector are connected, It is possible to prevent the liquid from entering the gap and the liquid from adhering to the vicinity of the opening of the gap. When the connection between the male connector and the female connector is released, the male valve mechanism and the female valve mechanism are closed, so that the liquid does not enter the gap between the female valve mechanism and the female valve mechanism. The male connector can be removed from the mold connector. Accordingly, since the connection surfaces of the male connector and the female connector that have been disconnected are not in contact with liquid, liquid adheres to surrounding objects other than the connector, or dust adheres to the connection surface due to the liquid. It can suppress becoming easy.

The gist of the invention according to claim 2 is that, in the connector according to claim 1, the seal portion further includes a sandwiched portion that is sandwiched between the connection surfaces.
According to the second aspect of the present invention, the seal portion includes the sandwiched portion that fills the gap by being sandwiched between the connection surfaces, and the closing portion that closes the opening of the gap. When connecting the female connector, it is possible to prevent the entire gap formed between the connection surfaces from being exposed to the liquid flowing in the connector.

  The invention according to claim 3 is the connector according to claim 1 or 2, wherein the female valve mechanism abuts on the male case when the male connector and the female connector are connected. The gist is provided with a female side valve body, and the seal portion closes a gap between each connection surface where the male side case and the female side valve body abut each other.

  According to the invention described in claim 3, the seal portion closes the gaps formed between the connection surfaces of the male case and the female valve body, and therefore, on the connection surfaces of the male case and the female valve body. It can suppress that a liquid adheres.

  According to a fourth aspect of the present invention, in the connector according to the third aspect, the male side valve mechanism includes a male side valve body that is displaced within the male side case, and the female connector is connected to the male side valve body. The gist of the present invention is to provide a fixed valve that abuts and further includes an inner seal portion that is sandwiched between the male valve body and the fixed valve.

  According to the fourth aspect of the present invention, since the inner seal portion sandwiched between the male valve body and the fixed valve is further provided, the liquid does not adhere to the entire connection surfaces of the male connector and the female connector. Can be in a state.

  According to a fifth aspect of the present invention, in the connector according to any one of the first to fourth aspects, the male valve mechanism includes a male valve body that is displaced within the male case, and the female connector. Includes a fixed valve that comes into contact with the male valve body, and the fixed valve further includes a sliding contact seal portion that suppresses liquid leakage, and the sliding contact seal portion slides at the tip of the seal portion relative to the seal portion. The gist is to have a lip part in contact.

  According to the fifth aspect of the present invention, since the sliding contact seal portion comes into contact with the seal portion that closes the gap on the connection surface at the lip portion at the tip, the contact area with the seal portion is reduced. Therefore, even if the friction coefficient when the sliding contact seal portion slides on the seal portion is relatively large, since the contact area is small, the force required to insert the male connector into the female connector can be reduced. it can.

  The invention according to claim 6 is the connector according to any one of claims 1 to 5, wherein the male valve mechanism includes a male valve body that is displaced in the male case, and the male valve The body includes a sliding contact seal portion that suppresses leakage of liquid through the male case, and the sliding contact seal portion has a lip portion that is in sliding contact with the male case at its tip. And

  According to the sixth aspect of the present invention, the sliding contact seal portion has the lip portion that comes into contact with the male case at the tip thereof, so that the contact area between the lip portion and the male case is reduced. For this reason, the force required to insert the male connector into the female connector can be reduced.

The gist of the invention described in claim 7 is that, in the connector according to claim 5 or 6, the seal portion has an inclined surface that comes into contact with the lip portion of the sliding contact seal portion.
According to the seventh aspect of the present invention, since the seal portion has the inclined surface that comes into contact with the lip portion, the sliding of the lip portion is easily started. For this reason, the force required to start inserting the male connector into the female connector can be reduced.

  The invention according to claim 8 is the connector according to any one of claims 5 to 7, wherein the seal portion is made of a material that is elastically deformable and softer than the sliding contact seal portion. Is the gist.

  According to the eighth aspect of the present invention, the seal portion can be elastically deformed along the shape of the seal portion when contacting the sliding contact seal portion. For this reason, since it is hard to produce a clearance gap between a sealing part and a sliding contact seal part, it suppresses that a liquid leaks through the clearance gap between a sealing part and the sliding contact seal part contact | abutted to this sealing part. Can do.

  As described above, according to the present invention, it is possible to provide a connector that can prevent liquid from adhering to each connection surface of the male connector and the female connector.

Sectional drawing which shows the non-connecting state of the connector of 1st Embodiment which actualized this invention. (A) is a perspective view of the connection seal | sticker part with which the connector is equipped, (b) is the sectional drawing. (A) is a perspective view of the V ring with which the connector is equipped, (b) is the sectional drawing. The top view of the connector. Sectional drawing which shows the principal part which shows the non-connecting state of the connector. The principal part sectional view which shows the connection start state of the connector. Sectional drawing which shows the connection completion state of the connector. The principal part sectional view showing the connection completion state of the connector of a 2nd embodiment which materialized the present invention. Sectional drawing which shows the principal part which shows the connection completion state of the connector of 3rd Embodiment which actualized this invention. Sectional drawing which shows the connector of the connection completion state of conventional structure.

(First embodiment)
A first embodiment embodying a connector of the present invention will be described below with reference to FIGS.

  As shown in FIG. 1, the connector of the present embodiment includes a male connector 10 and a female connector 11. The male connector 10 is connected to a first external flow path (not shown) through which liquid flows, and the female connector 11 is connected to a second external flow path (not shown) through which liquid flows.

  The male connector 10 includes a joint portion 15 that is connected to the first external flow path and includes a communication passage 16 inside, and a male side case 18 that is fixed to the joint portion 15 via a seal ring 17. . The male case 18 is made of resin, has a substantially cylindrical shape, and has a flow path 21 through which liquid flows. The male case 18 includes an opening 19 connected to the communication path 16 of the joint portion 15 and a male connection port 20 connected to the female connector 11. Furthermore, the flow path 21 includes a large diameter flow path 21a provided on the opening 19 side and a small diameter flow path 21b provided on the male connection port 20 side and having a smaller diameter than the large diameter flow path 21a. A seal ring 18 a made of elastomer or rubber is fitted on the outer peripheral surface of the male case 18.

  In the male case 18, a coupling seal portion 22 made of an elastically deformable material such as an elastomer is fitted on the male connection port 20 side. As shown in FIG. 2A, the connection seal portion 22 has a closed portion 22a formed in a cylindrical shape, and a sandwiched portion 22b extending vertically from the outer peripheral surface of the closed portion 22a. The blocking portion 22a has an outer diameter that can be fitted into the small diameter channel 21b of the male case 18. Further, as shown in FIG. 2 (b), inclined portions 22c whose tip surfaces are inclined inward are formed at both ends of the blocking portion 22a.

  Further, the sandwiched portion 22b extends from a substantially center in the height direction from one opening to the other opening on the outer peripheral surface of the closing portion 22a. The width of the sandwiched portion 22b is substantially the same as the width of the end surface of the male case 18 on the small diameter channel 21b side.

  As shown in FIG. 1, when the coupling seal portion 22 is fitted to the male case 18, the sandwiched portion 22 b comes into contact with the end surface of the male case 18, thereby positioning the coupling seal portion 22. That is, the lower part of the blocking part 22 a is fitted into the small diameter channel 21 b, and the other upper part protrudes from the end surface of the male case 18. Further, the sandwiched portion 22 b of the connection seal portion 22 may be fixed to the end surface of the male case 18 with an adhesive or the like.

  As shown in FIG. 1, a male side valve mechanism 25 is accommodated in the male side case 18. The male side valve mechanism 25 includes a male side valve body 26 provided so as to be displaceable in the male side case 18, and a coiled spring 27 that biases the male side valve body 26 toward the male side connection port 20. ing. The male side valve body 26 is made of resin, is formed in a substantially covered cylindrical shape, and includes a base end portion 26a having an opening and a tip end portion 26b having a smaller diameter than the base end portion 26a.

  The base end portion 26a has a shape capable of coming into contact with a stepped surface between the large-diameter channel 21a and the small-diameter channel 21b, and its outer diameter is slightly smaller than the inner diameter of the large-diameter channel 21a. The outer diameter of the distal end portion 26b is formed to be slightly smaller than the small diameter channel 21b. Further, a gap is formed between the distal end side of the distal end portion 26b and the male case 18, and one end of the closing portion 22a of the connecting seal portion 22 is fitted into this gap (see FIG. 5).

  Further, as shown in FIG. 1, a through hole 26 d is formed in the peripheral wall portion of the male valve body 26. When the male valve body 26 escapes from the small-diameter flow path 21b and liquid is introduced into the flow path 21 from the opened male side connection port 20, the liquid passes through the through-hole 26d to the male side case. 18 flow paths 21.

  A concave portion 26e is formed on the outer peripheral surface of the distal end portion 26b, and a male side V-ring 24A as a sliding contact seal portion is fitted into the concave portion 26e. The male side V-ring 24 </ b> A suppresses liquid leakage through the gap between the male side case 18 and the male side valve element 26. The male side V-ring 24A is elastically deformable and is made of a material harder than the connecting seal portion 22, and is made of, for example, rubber.

  As shown in FIG. 3 (a), the male V-ring 24A is substantially annular, and as shown in FIG. 3 (b), the cross-sectional shape is V-shaped. The male side V ring 24A has a cylindrical portion C and a lip portion R extending obliquely downward from the tip of the cylindrical portion C. As shown in FIG. 3 (b), the cylindrical portion C is formed in a size that can be fitted into the recess 26e, and the outer peripheral surface thereof extends from one end where the lip R is formed to the other end. It inclines so that an outer diameter may become small.

  The lip R has an inclined surface S on the outer side. As shown in FIGS. 1 and 5, the lip R is shaped so as to protrude from the outer peripheral surface of the distal end portion 26b of the male valve body 26 when the male V-ring 24A is fitted in the recess 26e. Is formed. Therefore, when the male valve body 26 is displaced in the male case 18, the tip of the lip R is in sliding contact with the inner surface of the male case 18, and the male case 18 and the male valve body 26 are in contact with each other. Maintains the sealing property between. The area of the tip of the lip R is small, and the contact area with the male case 18 is smaller than when an O-ring having substantially the same size is fitted in the recess 26e. For this reason, the male valve body 26 can be pushed into the male case 18 with a small insertion force (low insertion force). The male side V ring 24 </ b> A has a base end portion of the lip R with respect to the male side valve body 26, and a tip end side of the male side valve body 26, and a tip end of the lip portion R is the base end portion of the male side valve body 26. It fixes to the recessed part 26e so that it may become the 26a side.

  As shown in FIGS. 1 and 5, the distal end surface of the male valve body 26 is recessed with a circular accommodating portion 26g having a size slightly smaller than the distal end surface. The disc-shaped inner seal portion 23 is accommodated in the housing. The inner seal portion 23 is made of the same material as the connecting seal portion 22 such as an elastomer.

  Among such male-side valve bodies, when the distal end portion 26b is inserted into the small diameter channel 21b, the small diameter channel 21b is closed by the distal end portion 26b, and between the distal end portion 26b and the small diameter channel 21b. This is a state where the male side V-ring 24A seals the slight gap. As a result, the male connection port 20 is closed and the flow of the liquid in the flow path 21 is blocked. Hereinafter, the position of the male valve body 26 in this state is referred to as a closed position.

  As shown in FIG. 1, the spring 27 is disposed in the large diameter channel 21a so as to be extendable and contractible. The spring 27 urges the male valve body 26 to the closed position. In a state where no pressing force is applied from the outside to the male side valve body 26 by the biasing force of the spring 27, the male side valve body 26 is disposed at the closed position.

  As shown in FIG. 1, the female connector 11 includes a joint portion 29 connected to the second external flow path and having a communication passage 30 inside, and a female-side case fixed to the joint portion 29 via a seal ring 32. 33. The female case 33 is made of resin, has a substantially cylindrical shape, and has a flow path 31 through which liquid flows. Moreover, the female side case 33 has the opening 34 connected to the communicating path 30 of the joint part 29, and the female side connection port 35 connected to the male connector 10 side in the both ends. The edge of the female connection port 35 has a shape that is expanded outward in order to make it easier to accept the male connector 10.

  The female side case 33 includes a large diameter portion 33a formed on the opening 34 side and a small diameter portion 33b formed on the female side connection port 35 side. A step portion 33c is provided between the large diameter portion 33a and the small diameter portion 33b.

  In the female case 33, a resin fixed valve 36 is fixed so as not to move. As shown in FIG. 4, the fixed valve 36 includes a substantially cylindrical main body 36a and a fixed portion 36b formed at one end of the main body 36a. The fixing portion 36b has three extending portions formed radially from the main body 36a, and is fixed between the female case 33 and the joint portion 29 as shown in FIG. A flow path 36c through which the liquid passes is formed on the outer periphery of the main body 36a between the extending portions provided in the fixed portion 36b. When the fixed valve 36 is fixed to the female side case 33, the flow path 36 c communicates the communication path 30 in the joint portion 29 and the flow path 31 in the female side case 33.

  As shown in FIG. 1, a recessed portion 36d is formed on the outer periphery of the distal end portion of the fixed valve 36, and a female side V-ring 24B as a sliding contact seal portion is fitted into the recessed portion 36d. The female side V-ring 24B has the same shape as the male side V-ring 24A and is made of the same material.

  The female side V-ring 24B is arranged in a direction opposite to the direction of the male side V-ring 24A. That is, with respect to the male valve body 26, the base end portion of the lip portion R is disposed on the distal end surface side of the fixed valve 36 and the distal end portion of the lip portion R is disposed on the fixed portion 36 b side of the fixed valve 36.

  As shown in FIG. 1, a female side valve mechanism 37 is provided in the female side case 33 and on the outer periphery of the fixed valve 36. The female valve mechanism 37 includes a female valve body 38 that displaces in the female case 33 and a coiled spring 39 that biases the female valve body 38 toward the female connection port 35.

  The female side valve body 38 is made of resin and is formed in a substantially cylindrical shape, and its outer diameter is slightly smaller than the inner diameter of the flow path 31 of the female side case 33. The female valve body 38 accommodates the tip of the fixed valve 36 inside. A lip portion R of the female V ring 24A fitted to the fixed valve 36 is in sliding contact with the inner surface of the female valve body 38, and a gap between the female valve body 38 and the fixed valve 36 is interposed therebetween. The liquid leakage is suppressed.

  Further, a step-shaped step surface 38a is formed on the inner side surface of the female valve body 38, and one end of a spring 39 is supported and fixed to the step surface 38a. Furthermore, a flange 38b is formed at one end of the female valve body 38 so as to project outward. When the flange 38b comes into contact with the stepped portion 33c of the female side case 33, the displacement range of the female side valve body 38 is restricted, and the female side valve body 38 closes the female side connection port 35. Placed in. In a state where no pressing force is applied to the female side valve body 38, the female side valve body 38 is biased to the closed position by the biasing force of the spring 39.

  Next, the operation of the connector of this embodiment will be described. First, as shown in FIG. 5, the male connector 10 and the female connector 11 are arranged such that their central axes coincide with each other, and the connection seal portion 22 of the male connector 10 and the female connection port 35 of the female connector 11 Are arranged so that they face each other.

  Then, as shown in FIG. 6, the male connector 10 is moved relative to the female connector 11. Then, the distal end of the fixed valve 36 of the female connector 11 is fitted into the closing portion 22a of the coupling seal portion 22 so that the distal end surface of the fixed valve 36 and the distal end surface of the male valve body 26 are brought into contact with each other. The front end surface of the female valve body 38 is brought into contact with the sandwiched portion 22 b of the seal portion 22.

  As a result, the inner seal portion 23 provided on the distal end surface of the male valve body 26 is sandwiched between the male valve body 26 and the fixed valve 36, and the inclined portions 22c of the connection seal portion 22 are inclined. The lip R of the male V-ring 24A and the lip R of the female V-ring 24B are in contact with the surface. At this time, as described above, the connecting seal portion 22 is made of a softer material than the V-rings 24A and 24B. Therefore, the connecting seal portion 22 is deformed along the shape of the V-rings 24A and 24B and is in close contact with the inclined surface.

  Thus, when the male side connection port 20 and the female side connection port 35 are connected, the male connector 10 is pressed toward the female connector 11 or the female connector 11 is pressed toward the male connector 10. To do. When the male connector 10 is inserted into the female connector 11 in this manner, the male case 18 presses the female valve body 38 against the biasing force of the spring 39 of the female connector 11, so that the female valve body 38 is pressed. 38 is pushed into the female case 33 from the closed position. At the same time, the fixed valve 36 of the female connector 11 makes the male side valve body resist the urging force of the spring 27 while sliding the female side V ring 24B provided at the tip of the fixed valve 36 against the inner surface of the coupling seal portion 22. 26 is pressed. The male valve body 26 is displaced in a direction away from the closed position by being pressed by the fixed valve 36.

  As described above, when the male connector 10 is inserted into the female connector 11, the female side V-ring 24B comes into sliding contact with the inner surface of the connecting seal portion 22 having a non-slip surface. Of the 24B, the lip portion R that is in sliding contact with the connecting seal portion 22 has a small contact area. For this reason, the insertion force required to open the male side valve mechanism 25 and the female side valve mechanism 37 can be made relatively small.

  At this time, the sandwiched portion 22b of the connection seal portion 22 is elastically deformed between the male case 18 and the female valve body 38 by the biasing force of the spring 39 that biases the female valve body 38, and the male side The end face of the case 18 and the end face of the female valve body 38 are in close contact with each other. Further, the closing portion 22 a of the connection seal portion 22 closes the gap between the male case 18 and the female valve body 38 from the flow channel 21 side of the male case 18 and the flow channel side of the female case 33. In other words, the closing portion 22 a closes the opening of the gap between the male side case 18 and the female side valve body 38 from the inner side surface of the male side case 18 and the inner side surface of the female side case 33. Further, the inner seal portion 23 provided on the front end surface of the male side valve body 26 is in close contact with the front end surface of the male side valve body 26 and the front end surface of the fixed valve 36, and the gap generated between these front end surfaces is itself. It is blocked to fill.

  Then, as shown in FIG. 7, the distal end portion 26 b of the male side valve body 26 escapes from the small diameter flow path 21 b of the male side case 18, and the female side valve body 38 is on the large diameter portion 33 a side of the female side case 33. When the tip of the fixed valve 36 is inserted into the male side case 18, the flow path 21 of the male connector 10 and the flow path 31 of the female connector 11 are communicated. In this way, when the connector is in the communication state, when liquid is introduced from the first external flow path via the communication path 30 of the joint portion 29, the liquid is transferred to the outer periphery of the main body 36a of the fixed valve 36. It passes through the provided flow path 36 c and passes through the connection seal portion 22. Further, the liquid is sent to the large diameter channel 21 a via the small diameter channel 21 b of the male side case 18, passes through the through hole 26 d of the male side valve body 26, and is connected to the joint portion 15 from the opening 19 of the male side case 18. It is delivered to the passage 16. And it sends out from the communicating path 16 of the joint part 15 to a 2nd external flow path.

  Thus, when the liquid flows in the connector, the gap formed between the male case 18 and the female valve body 38 is not exposed to the liquid by the closing portion 22a and the sandwiched portion 22b of the connection seal portion 22. . For this reason, it can suppress that a liquid infiltrates into the clearance gap, or a liquid adheres to opening vicinity of a clearance gap. Further, an inner seal portion 23 is interposed between the male side valve body 26 and the fixed valve 36 so as to be in close contact with the front end surfaces thereof so as to fill a gap between the male side valve body 26 and the fixed valve 36. Therefore, the liquid does not enter the gap.

  Then, when the connector is disconnected and the connection between the first external channel and the second external channel is released, the male connector 10 is extracted from the female connector 11. At this time, the male valve body 26 is displaced in the male case 18 toward the male connection port 20 by the urging force of the spring 27. The female valve body 38 is displaced in the female case 33 toward the female connection port 35 by the biasing force of the spring 39.

  When the male side case 18 is completely extracted from the female side case 33, the male side valve body 26 is disposed at a closed position that closes the male side connection port 20, and the female side valve body 38 is connected to the female side connection port 35. It is placed in the closed position where it closes. At this time, since the lip R of the male V ring 24A is in contact with the inclined surface of the inclined portion 22c of the coupling seal portion 22, the liquid present in the male case 18 is allowed to flow into the male connection port. 20 can be prevented from being pushed out. Moreover, since the infiltration of the liquid between the male side case 18 and the female side valve body 38 is suppressed by the connection seal part 22, the surface of the sandwiched part 22 b of the connection seal part 22 and the end face of the female side valve body 38 are provided. Is in a state where no liquid is attached. Moreover, since the infiltration of the liquid between the male side valve body 26 and the fixed valve 36 is suppressed by the inner seal portion 23, the liquid is also applied to the front end surface of the male side valve body 26 and the front end surface of the fixed valve 36. It will be in the state which has not adhered. That is, it is possible to suppress the liquid from adhering to the entire male connection port 20 and the female connection port 35.

According to the first embodiment, the following effects can be obtained.
(1) In the first embodiment, the male connector 10 closes the gap between the male connector 10 and the female connector 11 from the channel 21 side of the male case 18 and the channel 31 side of the female case 33. The connection seal part 22 which has the obstruction | occlusion part 22a was provided. For this reason, when the liquid flows in the connector, the liquid can be prevented from entering between the male side case 18 and the female side valve body 38. When the connection between the male connector 10 and the female connector 11 is released, the male valve mechanism 25 and the female valve mechanism 37 are closed, so that a state in which liquid does not enter the gap is maintained. Thus, the male connector 10 can be removed from the female connector 11. Accordingly, the connection surfaces of the male connector 10 and the female connector 11 that have been disconnected are exposed, but no liquid is attached between the male case 18 and the female valve body 38. Therefore, it is possible to suppress the liquid adhering to the connection surface after releasing the connection from being attached to a surrounding object other than the connector, or the dust from being easily attached to the connection surface.

  (2) The connection seal portion 22 further includes a sandwiched portion 22b that is sandwiched between the male case 18 and the female valve body 38. The sandwiched portion 22b fills the gap by being sandwiched between the end faces. For this reason, when the male connector 10 and the female connector 11 are connected, the entire gap formed between the connection surfaces can be prevented from being exposed to the liquid flowing in the connector, so that liquid can enter the gap. Or the adhesion of liquid near the opening of the gap can be suppressed.

  (3) The male side valve body 26 is provided with an inner seal portion 23 that closes a gap generated between the male side valve body 26 and the fixed valve 36. Since it is possible to prevent liquid from entering between the male valve body 26 and the fixed valve 36, the male side connection port 20 and the female side connection port 35 are entirely formed by the inner seal portion 23 and the connection seal portion 22. It can suppress that a liquid adheres.

  (4) The fixed valve 36 of the female connector 11 includes a female-side V-ring 24 </ b> B that suppresses liquid leakage through the female-side valve body 38. The female side V-ring 24B has a lip portion R that contacts the connecting seal portion 22 and the male side case 18 at the tip when the male connector 10 is inserted into the female connector 11. Since the lip portion R has a sufficiently small contact area with the connecting seal portion 22 and the male case 18, the male connector 10 can be mounted even if the connecting seal portion 22 made of elastomer is provided in a range where the female V ring 24B is in sliding contact. The force required for insertion into the female connector 11 can be reduced. Further, since the female side V-ring 24B contacts the connecting seal portion 22 when the male side valve body 26 and the female side valve body 38 are disposed at the closed position, leakage of the liquid existing in the female connector 11 is prevented. Can be suppressed.

  (5) The male side valve body 26 includes a male side V ring 24 </ b> A that suppresses liquid leakage between the male side case 18 and the male side case 18. The male side V-ring 24A has a lip portion R that contacts the inner side surface of the male side case 18 at its tip when the male side valve element 26 is displaced from the closed position. Since the contact area between the lip R and the male case 18 is small, the force required when the male connector 10 is inserted into the female connector 11 can be reduced. Further, the male side V ring 24 </ b> A contacts the connecting seal portion 22 when the male side valve body 26 and the female side valve body 38 are disposed at the closed position, so that leakage of the liquid existing in the male connector 10 occurs. Can be suppressed.

  (6) The connection seal portion 22 includes inclined portions 22c that are in contact with the V-rings 24A and 24B at both ends thereof. When the male side valve body 26 and the female side valve body 38 are disposed at the closed position, the inclined portion 22c is in contact with the lip portion R of each V ring 24A, 24B. For this reason, when the male connector 10 is inserted into the female connector 11, the female V-ring 24 </ b> B moves so as to slide on the surface of the inclined portion 22 c of the coupling seal portion 22. For this reason, the force required when the male connector 10 is inserted into the female connector 11 can be reduced.

  (7) The connecting seal portion 22 is elastically deformable and is made of a softer material than the V rings 24A and 24B. For this reason, when the connection seal part 22 contact | abuts with V ring 24A, 24B, it can deform | transform along the shape of the connection seal part 22. FIG. For this reason, it is difficult for a gap to be formed between the connection seal portion 22 and each of the V rings 24A and 24B, and therefore, via the gap between the connection seal portion 22 and each of the V rings 24A and 24B in contact with the connection seal portion 22. The liquid can be prevented from leaking.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, since 2nd Embodiment is a structure which changed only the connection seal | sticker part of 1st Embodiment, the detailed description is abbreviate | omitted about the same part.

  As shown in FIG. 8, the connection seal part 22 of this embodiment is provided with only the obstruction | occlusion part 22a, and is formed in the substantially cyclic | annular form. The linking seal portion 22 is fixed to the male side connection port 20 of the male side case 18 with the upper portion of the closing portion 22 a protruding from the end surface of the male side case 18.

  In the state where the male connector 10 and the female connector 11 are connected, the opening of the gap generated between the male side case 18 and the female side valve body 38 by the closing portion 22a is the flow side and the female side case of the male side case 18. Since the liquid is blocked from the channel 33 side, the liquid does not enter the gap.

  When releasing the connection between the male connector 10 and the female connector 11, the male connector 10 is pulled out from the female connector 11, the fixed valve 36 is pulled out from the connection seal portion 22, and the male side case 18 is removed. The female valve body 38 is separated. At this time, since the liquid does not enter the gap, the liquid can be prevented from adhering to the end surface of the male case 18 and the end surface of the female valve body 38.

Therefore, according to the second embodiment, the following effects can be obtained in addition to the effects described in (1) and (3) to (7) of the first embodiment.
(6) In the second embodiment, the connection seal portion 22 includes only the closing portion 22 a that closes the gap between the male connector 10 and the female connector 11 from the inner surface of the male case 18 and the female valve body 38. Therefore, the connection seal part 22 can be made into a simple structure.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In addition, since 3rd Embodiment is a structure which only changed the connection seal | sticker part and inner side seal part of 1st Embodiment, the detailed description is abbreviate | omitted about the same part.

  As shown in FIG. 9, the connection seal portion 22 of the present embodiment is formed in an annular shape, and when the male connector 10 and the female connector 11 are connected, the end surface of the male case 18 and the female valve body 38 are connected. It has only the to-be-clamped part 22b clamped by the end surface.

  Further, the inner seal portion 23 is fixed to the tip of the male valve body 26. The inner seal portion 23 includes a sandwiched portion 23a that covers the distal end surface of the male valve body 26, and a closing portion 23b that is formed integrally with the sandwiched portion 23a so as to surround the sandwiched portion 23a. Yes. The sandwiched portion 23 a is formed in a circular shape in accordance with the shapes of the distal end surface of the male valve body 26 and the distal end surface of the fixed valve 36. The blocking portion 23b is formed in a cylindrical shape, and a sandwiched portion 23a is integrally formed at the approximate center of the inner side surface. Further, the closing portion 23b has inclined portions 23c that can come into contact with the lip portions R of the V rings 24A and 24B at both ends thereof.

  The inner seal portion 23 is fixed to the male side valve body 26 so that the clamped portion 23a abuts on the front end surface of the male side valve body 26 and the closing portion 23b is fitted inside the front end of the male side valve body 26. Is done. As a result, the closed portion 23b is in a state of protruding from the distal end surface of the male valve body 26. Further, since the outer peripheral surface of the blocking portion 23b does not protrude outward from the tip of the lip portion R of the male V ring 24A, it does not contact the inner surface of the male case 18 when the male valve body 26 is displaced. .

  When connecting the male connector 10 and the female connector 11, the female side valve body 38 is brought into contact with the male side case 18 and fixed inside the connection seal portion 22 fixed to the male side valve body 26. The tip of the valve 36 is fitted inside. Then, the male connector 10 is pushed into the female connector 11. At this time, the V rings 24A and 24B are in sliding contact with the male case 18 and the like, but the inner seal portion 23 is not in sliding contact with these members.

  When the male side valve mechanism 25 and the female side valve mechanism 37 are opened, liquid is supplied into the connector. At this time, the connection seal portion 22 is interposed between the male side case 18 and the female side valve body 38, and the connection seal portion 22 is in close contact with the end surfaces thereof, so that liquid enters the gap. Can be suppressed.

  Further, a sandwiched portion 23a of the inner seal portion 23 is interposed between the male valve body 26 and the fixed valve 36, and is closed so as to fill the gap therebetween. The closed portion 23b of the inner seal portion 23 is Since the opening of the gap between the side valve body 26 and the fixed valve 36 is closed, the entire connection surface of the male side valve body 26 and the fixed valve 36 is not exposed to the liquid. For this reason, it can suppress that a liquid penetrate | invades into the clearance gap, and can suppress that a liquid adheres to opening of a clearance gap. Therefore, when the connection between the male connector 10 and the female connector 11 is released, the end surface of the male side case 18, the end surface of the female side valve body 38, the front end surface of the male side valve body 26, and the front end surface of the fixed valve 36. There is no liquid on the surface.

Therefore, according to the third embodiment, the following effects can be obtained in addition to the effects described in (2) and (4) to (7) of the first embodiment.
(7) In 3rd Embodiment, the inner side seal part 23 was provided with the to-be-clamped part 23a clamped between each connection surface of the male side valve body 26 and the fixed valve 36. FIG. Further, the inner seal portion 23 includes a closing portion 23 b that closes the gap between the connection surfaces from the inner side surface of the male connector 10 and the inner side surface of the female connector 11. For this reason, when the male connector 10 and the female connector 11 are connected, the entire gap formed between the connection surfaces can be prevented from being exposed to the liquid flowing in the connector, so that liquid can enter the gap. Or the adhesion of liquid near the opening of the gap can be suppressed.

In addition, you may change each said embodiment as follows.
In the above embodiment, the liquid is allowed to flow from the female connector 11 toward the male connector 10. However, the liquid may be allowed to flow from the male connector 10 toward the female connector 11.

  -In each above-mentioned embodiment, although both the connection seal | sticker part 22 and the inner side seal part 23 were provided, any one may be sufficient. For example, in the first embodiment, the inner seal portion 23 may be omitted.

  In each of the above embodiments, the male connector 10 is provided with the connection seal portion 22 and the inner seal portion 23, but the female connector 11 may be provided with them. In that case, the connecting seal portion 22 is fitted inside the female valve body 38, and the inner seal portion 23 is fixed to the distal end surface of the fixed valve 36. Moreover, you may make it equip both the male connector 10 and the female connector 11 with the connection seal part 22 and the inner side seal part 23 not only in one side.

-In 3rd Embodiment, the inner side seal part 23 is set as the structure provided only with the cylindrical obstruction | occlusion part 23b, and you may abbreviate | omit the to-be-clamped part 23a.
The configuration and shape of the connector may be a configuration and shape other than those in the above embodiments, and the connecting seal portion is provided between the female valve body 38 and the male contacted portion that contacts the female valve body 38. The configuration provided with 22 is sufficient.

  DESCRIPTION OF SYMBOLS 10 ... Male connector, 11 ... Female connector, 18 ... Male side case, 21, 31, 36c ... Flow path, 22 ... Connection seal part, 22b, 23a ... Clamped part, 23 ... Inner seal part, 25 ... Male Side valve mechanism, 26 ... male side valve body, 27 ... spring, 31 ... flow path, 33 ... female side case, 36 ... fixed valve, 37 ... female side valve mechanism, 38 ... female side valve body, 39 ... spring, R ... Lip part, S ... Inclined surface.

Claims (8)

A male connector having a male case having a flow path for liquid and a male valve mechanism provided in the male case;
A female connector having a female case having a flow path for liquid and a female valve mechanism provided in the female case;
In the connector that closes the male valve mechanism and the female valve mechanism when the connection between the male connector and the female connector is released,
When the male connector and the female connector are connected, a seal portion is provided that closes a gap between the connection surfaces from the flow path side of the male case and the flow path side of the female case. Connector.   The connector according to claim 1, wherein the seal portion further includes a sandwiched portion that is sandwiched between the connection surfaces. The female valve mechanism includes a female valve body that contacts the male case when the male connector and the female connector are coupled,
The connector according to claim 1, wherein the seal portion closes a gap between connection surfaces on which the male case and the female valve body come into contact with each other. The male valve mechanism includes a male valve body that is displaced within the male case, and the female connector includes a fixed valve that contacts the male valve body,
The connector according to claim 3, further comprising an inner seal portion sandwiched between the male valve body and the fixed valve. The male valve mechanism includes a male valve body that is displaced within the male case, and the female connector includes a fixed valve that contacts the male valve body,
The said fixed valve is further equipped with the sliding contact seal part which suppresses the leakage of a liquid, and this sliding contact seal part has a lip part which slidably contacts with respect to the said seal part at the front-end | tip. Connector described in. The male valve mechanism includes a male valve body that is displaced within the male case.
The male valve body includes a sliding contact seal portion that suppresses leakage of liquid through the male case, and the sliding contact seal portion includes a lip portion that is in sliding contact with the male case at the tip thereof. The connector according to any one of claims 1 to 5.   The connector according to claim 5 or 6, wherein the seal portion has an inclined surface that comes into contact with the lip portion of the sliding contact seal portion.   The connector according to claim 5, wherein the seal portion is made of a material that is elastically deformable and softer than the sliding contact seal portion.

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