JP4535345B2 - Automatic stop nozzle and liquid feeder - Google Patents

Description

  The present invention relates to an automatic stop type nozzle capable of automatically stopping liquid injection when a liquid is poured into a container to a predetermined liquid level position, and a liquid feeding device including the nozzle.

  Conventionally, various oil supply pumps have been used for transferring kerosene from a storage container to a portable container. Among these oil supply pumps, when kerosene is injected into a portable container to a predetermined position, the transfer of kerosene is automatically stopped to prevent an accident that the kerosene overflows from the portable container. There is something.

  The mechanism of the oil pump with such an overflow prevention function is generally as follows. That is, this oil supply pump is provided with an oil level detection sensor for detecting the position of the oil level at a nozzle for injecting kerosene inserted in the portable container. When the level of kerosene injected into the portable container reaches a position where the oil level detection sensor is activated, the oil level detection sensor issues a detection signal, and based on this signal, the drive of the oil pump is stopped. As a result, the transfer of kerosene is stopped.

  As an example of this oil level detection sensor, for example, there is an electrical contact that operates in conjunction with the movement of a float that rises as the oil level rises, and when the float rises to a predetermined position, the electrical contact is connected (short-circuited). ) Or cutting.

  However, in the fuel pump configured as described above, a malfunction may occur due to a complicated structure for connecting the movement of the float to the operation of the electrical contact or malfunction of the electrical contact due to aging of the electrical contact. There is a problem that the oil pump cannot be stopped normally due to such a malfunction.

  Therefore, the present invention detects the liquid level of the liquid injected into a container such as a portable container by simple means and stops the liquid injection when the liquid level in the container reaches a predetermined position. It is an object of the present invention to provide an automatic stop type nozzle that can perform the above and a liquid feeding device including the automatic stop type nozzle.

  According to the first aspect of the present invention, there is provided an automatic stop nozzle that injects liquid into a container and stops liquid injection when the liquid level of the injected liquid reaches a predetermined position. A flow path blocking means that is displaced between a blocking position and an opening position, a float that is displaced according to the position of the liquid level of the liquid injected into the container, and a first displacement that is displaced according to the displacement position of the float. A first magnetic body and a second magnetic body disposed with a flow path blocking means located at a position where the flow path is blocked with respect to the first magnetic body, the first magnetic body and the second magnetic body being both The second magnetic body includes two magnets, a first magnet that has a different polarity facing the first magnetic body, and a second magnet that has the same polarity facing the first magnetic body. The first magnet and the second magnet are The second magnetic body holding means holds the first magnet to the first magnetic body holding means. The first magnet can be opposed to the first magnetic body from a position where the second magnet can be opposed to the first magnetic body. It is biased towards the position.

  By configuring the automatic stop type nozzle in this way, it is possible to automatically stop the injection of liquid into the container when the liquid has accumulated in a predetermined position without using a complicated structure such as an electrical contact. Can do. In addition to this, the flow path blocking means can reliably block the flow path by facing the first magnetic body of the second magnetic body and the first magnetic body, and the second magnet of the second magnetic body can be By facing the magnetic body, the float can be reliably displaced downward.

  According to a second aspect of the present invention, in the automatic stop type nozzle according to the first aspect, the fluid pressure is arranged above the float so as to cover at least a part of the float when the float is viewed from above. Mitigation measures are provided.

  By configuring the automatic stop type nozzle in this way, the flow pressure applied to the float by the liquid flowing down the flow path can be reduced.

According to a third aspect of the present invention, there is provided an automatic stop nozzle that injects liquid into a container and stops liquid injection when the liquid level of the injected liquid reaches a predetermined position. A flow path blocking means that is displaced between a blocking position and an opening position, a float that is disposed outside the flow path and is displaced according to the position of the liquid level of the liquid to be injected into the container, and a displacement position of the float A first magnetic body that is displaced corresponding to the first magnetic body, and a second magnetic body that is disposed across the position of blocking the flow path of the flow path blocking means with respect to the first magnetic body. The two magnetic bodies are both composed of permanent magnets, and the second magnetic body includes two magnets, a first magnet that faces the first magnetic body with a different polarity and a second magnet that faces the same pole, and the first magnet And the second magnet is held by the second magnetic body holding means, and the second magnetic body holding means is The magnet can be displaced between a position where the magnet faces the first magnetic body and a position where the second magnet faces the first magnetic body, and the first magnet is moved from the position where the second magnet faces the first magnetic body. It is urged toward the position facing the body.

  By configuring the automatic stop type nozzle in this way, the float can be displaced corresponding to the liquid surface position regardless of the flow pressure of the liquid flowing in the flow path. In addition to this, the flow path blocking means can reliably block the flow path by facing the first magnetic body of the second magnetic body and the first magnetic body, and the second magnet of the second magnetic body can be By facing the magnetic body, the float can be reliably displaced downward.

  The invention described in claim 4 is characterized in that the liquid feeding device is provided with the automatic stop nozzle described in any one of claims 1 to 3.

  By configuring the liquid feeding device in this manner, when the liquid transferred from the liquid feeding device is accumulated in a predetermined position in the container, the injection of the liquid into the container can be automatically stopped.

  Another aspect of the invention is an automatic stop nozzle that injects liquid into a container and stops liquid injection when the liquid level of the injected liquid reaches a predetermined position. A flow path blocking means that is displaced to an open position, a float that is displaced corresponding to the position of the liquid level of the liquid injected into the container, and a first magnetic body that is displaced corresponding to the displacement position of the float; The first magnetic body includes a second magnetic body disposed with a flow path blocking means located at a position for blocking the flow path, and at least one of the first magnetic body and the second magnetic body is magnetized. It is characterized by being.

  By configuring the automatic stop type nozzle in this way, it is possible to automatically stop the injection of liquid into the container when the liquid has accumulated in a predetermined position without using a complicated structure such as an electrical contact. Can do.

  In another aspect of the invention, in the above-described automatic stop type nozzle, the position where the flow path blocking means blocks the flow path is provided in the flow path, and is closed and opened by the flow path blocking means. When the path is open and closed, the opening is blocked and the opening is closed.

  By configuring the automatic stop type nozzle in this way, the flow path blocking means can be brought into close contact with the opening portion by an attractive force, so that the flow path can be reliably blocked.

  According to another invention, in the above-described automatic stop nozzle, the first magnetic body and the second magnetic body are both composed of magnets, and the second magnetic body includes a first magnet that opposes the first magnetic body with a different polarity. Two magnets of the 2nd magnet which make the same pole oppose are provided.

  By configuring the automatic stop nozzle in this way, the flow path blocking means can reliably block the flow path by facing the first magnet and the first magnetic body of the second magnetic body, and the first When the second magnet of the two magnetic body faces the first magnetic body, the float can be surely displaced downward.

  According to another invention, in the above-described automatic stop type nozzle, a fluid pressure reducing means is provided above the float so as to cover at least a part of the float when the float is viewed from above. It is characterized by.

  By configuring the automatic stop type nozzle in this way, the flow pressure applied to the float by the liquid flowing down the flow path can be reduced.

  Another aspect of the invention is an automatic stop nozzle that injects liquid into a container and stops liquid injection when the liquid level of the injected liquid reaches a predetermined position. A flow path blocking means that is displaced to an open position, a float that is disposed outside the flow path and is displaced according to the position of the liquid level of the liquid to be injected into the container, and corresponding to the displacement position of the float A first magnetic body that displaces, and a second magnetic body that is disposed across a position at which the flow path of the flow path blocking means is blocked with respect to the first magnetic body, the first magnetic body and the second magnetic body being At least one of them is magnetized.

  By configuring the automatic stop type nozzle in this way, the float can be displaced corresponding to the liquid surface position regardless of the flow pressure of the liquid flowing in the flow path.

  According to another invention, in the above-described automatic stop nozzle, the first magnetic body is housed in a valve body holding portion that holds the valve body, and the float has a magnet having the same polarity as the first magnetic body facing each other. It is provided.

  By configuring the automatic stop nozzle in this way, the first magnetic body housed in the valve body holding portion can be displaced even if it is not in contact with the float.

  Another invention is characterized in that the liquid feeding device is provided with the above-mentioned automatic stop nozzle.

  By configuring the liquid feeding device in this manner, when the liquid transferred from the liquid feeding device is accumulated in a predetermined position in the container, the injection of the liquid into the container can be automatically stopped.

  In the present invention, the injection of the liquid into the container can be automatically stopped when the liquid has accumulated in the container to a predetermined position without using a complicated configuration such as an electrical contact.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a front view of the appearance of the automatic stop nozzle according to the first embodiment, and FIGS. 2, 3 and 4 show the internal structure of the automatic stop nozzle.

  The automatic stop type nozzle includes a connection pipe 100, a liquid flow control unit 200 that controls the flow of liquid, and a nozzle pipe 300. The connection pipe 100 is connected to a main body of a liquid feeding device (not shown) through a hose (not shown). This liquid feeding device is for transferring a liquid such as kerosene from a primary container (not shown) such as a storage container to a secondary container S which is a container such as a portable container as shown in FIG. Specific examples of the device include an electric pump or a manual pump.

  Here, when the primary container is a storage tank for kerosene, for example, a portable plastic tank for subdividing kerosene from the storage tank corresponds to the secondary container. If the primary container is a water storage pool, a drum can or a plastic tank for subdividing water from this pool corresponds to the secondary container.

  And the liquid sent from the main body of these liquid feeding apparatuses flows in into the liquid flow control part 200 through the connection pipe 100. FIG. The liquid flowing into the liquid flow control unit 200 flows into the nozzle tube 300 when the liquid flow control unit 200 is in an open state in which the liquid can flow into the nozzle tube 300.

  On the other hand, when the liquid flow control unit 200 is in a blocking state in which the liquid cannot flow to the nozzle tube 300, the liquid flow is interrupted by the liquid flow control unit 200.

  As shown in FIG. 5, the nozzle tube 300 is inserted into the secondary container S from the liquid inlet S <b> 1 provided in the secondary container S, and the liquid transferred from the primary container is secondary to the nozzle tube 300. It is injected into the container S.

  2 and 3 are cross-sectional views (see FIG. 4) of the automatic stop nozzle when the liquid flow control unit 200 is in an open state (FIG. 2) and when it is in a shut-off state (FIG. 3). FIG. 3 is an end view of a surface perpendicular to the X axis and including the Y axis.

  FIG. 4 is an end view of a cross section (a surface including the X axis and the Y axis) of the automatic stop nozzle when the liquid flow control unit 200 is in an open state, as viewed from the side surface side.

  2 to 4, the direction from the connection pipe 100 toward the nozzle pipe 300 is the direction from the top to the bottom of the automatic stop nozzle, which is the direction in which the liquid flows.

  Below, the structure of the liquid flow control part 200 is demonstrated first.

  The liquid flow control unit 200 includes a substantially cubic outer cylinder 201 disposed outside and a cylindrical inner cylinder 202 disposed in a cylindrical space inside the outer cylinder 201. . Between the inner peripheral surface of the outer cylindrical body 201 and the outer peripheral surface of the inner cylindrical body 202, a cylindrical gap 203 having a ring-shaped cross section is formed.

  A circular opening 204 connected to the connection pipe 100 is formed on the upper side of the outer cylindrical body 201, and a circular opening 205 connected to the nozzle pipe 300 is formed on the lower side. A front side wall 206 and a rear side wall 207 that form one side of the outer cylindrical body 201 are provided in the front-rear direction of the inner cylindrical body 202 (direction along the axis X shown in FIG. 4).

  The rear side wall 207 of the outer cylindrical body 201, the remaining two side surfaces adjacent to the rear side wall 207 of the outer cylindrical body 201, and the inner cylindrical body 202 are configured as an integral body by, for example, injection molding. Therefore, the connecting portion between the rear side wall 207 and the adjacent side surface of the outer cylindrical body 201 and the connecting portion between the rear side wall 207 and the inner cylindrical body 202 are configured such that liquid does not leak.

  The connection pipe 100 and the connection part 208 of the liquid flow control part 200 are also connected so that the liquid inside does not leak. The front side wall 206 covers the front opening of the outer cylinder 201 and holds a lever 215 described later, and is attached to the four corners of the front end surface of the outer cylinder 201 with screws 209.

  In the vicinity of the inner side surface of the front side wall 206 and close to the connecting pipe 100, the gap 203 is slightly widened (expanded on both sides in the radial direction) to the outer cylinder 201 and the inner cylinder 202 side, and along the gap 203. A concave portion 210 is formed. Further, on the side close to the nozzle tube 300, the inner cylinder 202 extends in the direction of the nozzle tube 300, and a recess 210 is formed in a portion facing the front side wall 206 of the inner cylinder 202. The recess 210 has a donut-like annular shape, and the recess 210 is fitted with a rubber packing 211 having an annular shape when viewed from the front, and the front end surface of an integrated object that forms a part of the outer cylinder 201 on the front side wall 206. The rubber packing 211 is press-fitted into the recess 210 when it is attached to. That is, the front side wall 206 of the outer cylindrical body 201 and the remaining integral part of the outer cylindrical body 201 and the space between the front side wall 206 and the inner cylindrical body 202 are respectively sealed by the rubber packing 211, and the liquid in the gap 203 is It is configured to prevent leakage from the cylinder 201 or entry into the inner cylinder 202.

  Therefore, the liquid flowing in from the opening 204 flows down the gap 203 without flowing into the outside or entering the inside, and flows into the nozzle tube 300 from the lower opening 205.

  A cylindrical hollow portion 202 a is formed inside the inner cylindrical body 202. And in this hollow part 202a, the 2nd magnetic body holding means 213 holding the 1st magnet 212a as a 2nd magnetic body and the 2nd magnet 212b as a 2nd magnetic body is hold | maintained. The second magnetic body holding means 213 has a cylindrical shape and is held in the hollow portion 202a so as to freely rotate around the axis X while being inscribed in the inner peripheral surface of the hollow portion 202a.

  The first magnet 212a and the second magnet 212b held by the second magnetic body holding means 213 have a substantially rectangular parallelepiped shape, and are formed in the second magnetic body holding means 213 with the longitudinal direction oriented along the axis X. It is held by being fitted into the recess 213a. The first magnet 212a and the second magnet 212b protrude from the outer peripheral surface of the second magnetic body holding means 213 so that the second magnetic body holding means 213 can smoothly rotate with respect to the inner peripheral surface of the hollow portion 202a. So as to be not inserted into the recesses 213a and 213a each having a quadrangular prism shape.

  The first magnet 212a and the second magnet 212b are arranged at an angle of about 90 degrees around the axis X, and the first magnet 212a has an N pole on the outer peripheral surface side of the second magnetic body holding means 213. The second magnet 212b has an S pole directed toward the outer peripheral surface of the second body holding means 213.

  A cylindrical iron core 214 is inserted in the center of the second magnetic body holding means 213. The first magnet 212a and the second magnet 212b fitted in the recesses 213a and 213a have an attractive force acting between the iron core 214, that is, a force by which the first magnet 212a and the second magnet 212b attract the iron core 214 with a magnetic force. By simply fitting into the recesses 213a and 213a, each is securely held in the recess 213a.

  Of course, in order to further secure the holding in the recess 213a, means for fixing the first magnet 212a and the second magnet 212b in the recesses 213a and 213a with an adhesive may be used in combination. Further, by arranging the iron core 214 between the different magnetic poles of the first magnet 212a and the second magnet 212b, a magnetic path is formed, and the first magnet 212a and the second magnet 212b have a stable magnetic force for a long time. Can keep.

  A lever 215 is attached to the front surface of the front side wall 206. The lever 215 and the second magnetic body holding means 213 are fixed to each other by a screw 216. When the lever 215 is rotated around the axis X, the second magnetic body holding means 213 is also rotated around the axis X together. It has become.

  The lever 215 has a position in which the longitudinal direction of the lever 215 faces in the horizontal direction as shown by a solid line in FIG. The rotation range is restricted by the projection-like rotation restricting means 217a and 217b (see FIG. 1) provided on the front side wall 206 so that the range of about 90 degrees with respect to the lower side) can be rotated.

  The rotation restricting means 217b is provided at a position where it abuts on the left side surface of the lever 215 when the tip of the lever 215 faces downward, and the rotation of the lever 215 prevents the lever 215 from rotating further clockwise. To regulate. The other rotation restricting means 217a is provided at a position where it comes into contact with the right side surface of the lever 215 when the tip of the lever 215 faces rightward, so that the lever 215 does not further rotate counterclockwise. The rotation of 215 is restricted. Further, the second magnet 212b is positioned downward when the tip of the lever 215 is directed downward, and the first magnet 212a is positioned downward when the tip of the lever 215 is positioned rightward. In addition, the second magnetic body holding means 213 and the lever 215 are provided.

  Between the lever 215 and the front side wall 206, there is provided a coil spring 218 that urges the lever 215 in the counterclockwise direction when viewed from the front, that is, the lever 215 toward the rotation restricting means 217a. The coil spring 218 is fitted in a groove 219 formed in an arc shape around the axis X on the front side wall 206 and is provided so as to apply a reaction force to the lever 215 and the front side wall 206. Accordingly, the lever 215 is normally kept in the horizontal direction while being biased toward the rotation restricting means 217 a by the coil spring 218.

  Even if the lever 215 is rotated clockwise against the urging force of the coil spring 218 (the lever 215 is rotated in a direction to contract the coil spring 218), the lever 215 urges (returns) the coil spring 218 when the hand is released. Is driven counterclockwise to return to the horizontal position.

  Next, the structure of the nozzle tube 300 will be described.

  In use, the automatic stop nozzle is used by inserting the nozzle tube 300 into the secondary container S into which liquid is injected. The nozzle tube 300 is connected to the liquid flow control unit 200 via the connection unit 301 so that the liquid does not leak. Accordingly, the liquid transferred from the main body of the liquid feeding device flows into the gap 203 from the connection pipe 100 through the opening 204 of the liquid flow control unit 200, and from the opening 205 through the nozzle pipe 300 to the secondary container S. It is supposed to be injected into. That is, a space from the connection pipe 100 to the gap 203 and the nozzle pipe 300 is formed as a flow path of the automatic stop nozzle.

  The cylindrical nozzle tube 300 has a nozzle tube large-diameter portion 302 in which approximately one-fourth of the upper side has a large inner diameter in the tube, and the remaining three-fourths of the remaining lower quarter has a small diameter in the tube. The nozzle tube is configured as a small diameter portion 303.

  The cross section of the nozzle tube 300 is substantially circular. A float 304 is inserted into the nozzle tube small diameter portion 303, and a fluid pressure reducing means 305 is inserted into the nozzle tube large diameter portion 302. The float 304 has a large-diameter portion 304a (hereinafter referred to as “float large-diameter portion”) having a large diameter on the lower second side, and a small-diameter portion 304b (hereinafter referred to as “float”) whose remaining upper third is a small diameter. The small-diameter portion is formed as a whole and has a substantially cylindrical body as a whole and is a sealed hollow body. And it is comprised so that it may have buoyancy with respect to the liquid stored in the secondary container S. FIG.

  A connecting portion between the float large diameter portion 304 a and the float small diameter portion 304 b of the float 304 is a tapered surface 304 c that is inclined downward from above toward the outside from the central axis (Y axis) side common to the nozzle tube 300 and the float 304. Is formed. The float large-diameter portion 304a and the nozzle tube small-diameter portion 303 are configured such that the diameters of the outer peripheral surface of the float large-diameter portion 304a and the inner peripheral surface of the nozzle tube small-diameter portion 303 are the float large-diameter portion 304a and the nozzle tube small-diameter portion 304. The gap is formed so as to allow the liquid to flow between them. Of course, the float small-diameter portion 304 b has a smaller diameter than the float large-diameter portion 304 a, so that a gap through which the liquid flows is also formed between the float small-diameter portion 304 b and the inner peripheral surface of the nozzle tube large-diameter portion 302. In addition, a total of eight guide pieces 304d that are formed radially around the Y axis at intervals of 90 degrees are provided above and below the side surface of the float large-diameter portion 304a. The float 304 is supported by the guide piece 304d so as to be slidable in the vertical direction with respect to the inner peripheral surface of the nozzle tube small diameter portion 303. The inflowing liquid passes through the space between these guide pieces 304d.

  A circular recess 304e is formed at the tip of the float small diameter portion 304b. A cylindrical magnet 304f as a first magnetic body is formed in the recess 304e, and the tip side (upper side) is an S pole. It is so fitted. The recess 304e is formed to be slightly smaller than the outer dimension of the magnet 304f, and the magnet 304f is fitted into the recess 304e and fixed to the float 304. In addition, if the recessed part 304e and the magnet 304f are adhere | attached with an adhesive agent, the magnet 304f will be fixed in the recessed part 304e still more firmly.

  At the lower opening end of the nozzle tube 300, a line portion 306 is formed that intersects in a cross shape so that the float 304 does not fall out of the nozzle tube 300. Since the linear portion 306 is thin, the portion other than the linear portion 306 is open, and the liquid that has flowed down in the nozzle tube 300 is discharged from the opening to the outside of the nozzle tube 300. .

  Above the float 304, fluid pressure reducing means 305 is disposed. The fluid pressure reducing means 305 has a substantially cylindrical body having a hollow portion 305a which is closed on the upper side and opened on the lower side. The inner diameter of the hollow part 305a is larger than that of the float small diameter part 304b, and the length in the vertical direction of the hollow part 305a (the length of the depth of the hollow part 305a) is shorter than the length of the float small diameter part 304b. . Therefore, when the float small diameter portion 304b is fully inserted into the hollow portion 305a, the magnet 304f provided at the tip of the float small diameter portion 304b and the tip protrusion 305b of the hollow portion 305a come into contact with each other. The tip protruding portion 305b is formed so as to protrude inward in a small semicircular shape inside the upper end surface 305c and intersecting the Y axis.

  The upper end portion of the fluid pressure reducing means 305 is configured as a valve body 305e as a flow path blocking means having a substantially truncated cone formed by an upper end surface 305c and a tapered surface 305d. The tapered surface 305d is an inclined surface that is inclined downward from above toward the outside from the Y-axis side.

  A rubber packing 307 is provided in the opening 205. The rubber packing 307 has an annular shape when viewed from the axial direction along the Y axis, and is disposed along the peripheral edge of the opening 205. The opening 307 a of the rubber packing 307 is formed with an opening slightly smaller than the opening diameter of the opening 205, and the rubber packing 307 protrudes slightly to the center side of the opening 205.

  The valve body 305 e is configured to close the opening 307 a of the rubber packing 307 by contacting the tapered surface 305 d with the inner peripheral edge of the rubber packing 307. The opening 205 is closed by closing the opening 307a. When the valve body 305e closes the opening 205, the liquid cannot flow into the nozzle tube 300 through the opening 205, and the flow path is blocked by the valve body 305e.

  When the valve body 305e is in the state of closing the opening 307a, that is, the opening 205, the portion protruding from the opening 205 of the rubber packing 307 overlaps the tapered surface 305d of the valve body 305e, It is in a state bent to the opening 205 side. Since the pressure of the liquid that has flowed into the gap 203 is applied to the rubber packing 307 that overlaps the tapered surface 305d, the rubber packing 307 is pressed toward the tapered surface 305d. Therefore, the joining surface between the tapered surface 305d and the rubber packing 307 is brought into close contact, and the opening 205 is reliably closed by the valve body 305e.

  When the tapered surface 305 d of the valve body 305 e is separated from the opening 205, that is, the rubber packing 307, the liquid flows through the opening 205 to the nozzle tube 300 side. That is, the flow path between the liquid flow control means 200 and the nozzle tube 300 is opened. Of course, the outer diameter of the fluid pressure reducing means 305 is such that a gap is formed between the inner diameter surface of the nozzle tube large diameter portion 302 so that the liquid can flow down.

  Further, a total of eight guide pieces 305f formed radially around the Y axis at intervals of 90 degrees are provided above and below the side surface of the fluid pressure reducing means 305, respectively. The fluid pressure reducing means 305 is supported by the guide piece 305f so as to be slidable in the vertical direction with respect to the inner peripheral surface of the nozzle tube large diameter portion 302. Further, the liquid that has passed through the opening 205 passes between the guide pieces 305f. The fluid pressure reducing means 305 has a lower guide piece 305f that contacts the step 308 provided at the boundary between the nozzle tube large diameter portion 302 and the nozzle tube small diameter portion 303. It is designed not to fall.

  Next, while supplementing the above description of the structure of the automatic stop nozzle, its operation and operation will be described.

  First, prior to the use of the automatic stop nozzle, the nozzle tube 300 is inserted into the secondary container S into which liquid is injected as shown in FIG. 5 from the inlet S1 of the secondary container S. In the present embodiment, the clip 400 is attached to the nozzle tube 300, and the clip 400 is fastened to the opening edge S1 'of the inlet S1, so that the automatic stop type nozzle is hung on the opening edge S1'.

  The lever 215 is displaced in the horizontal direction by the urging force of the coil spring 218 except when the lever 215 is rotated downward. For this reason, the first magnet 212a and the magnet 304f on the float side 304 have opposite polarities, and the float 304 has a liquid flow control unit 200 side as shown in FIG. 3 due to the attractive force of the first magnet 212a and the magnet 304. Has been raised. In the state where the float 304 is pulled up to the liquid flow control unit 200 side, the fluid pressure reducing means 305 is also pulled up to the liquid flow control unit 200 side together with the float 304, and the valve body 305 e closes the opening 205. . That is, when the valve body 305e blocks the opening 205, the valve body 305e is in a position to block the flow path, and even if liquid is transferred from the main body side of the liquid feeding device, the nozzle pipe 300 side Will not flow into. The magnet 304f exerts sufficient absorption force between the first magnet 212a and the surface facing the first magnet 212a is flat so that the valve body 305e can reliably block the flow path. ing.

  When the tip of the lever 215 is rotated downward (clockwise) from the above state, that is, the lever 215 is rotated in the horizontal direction and the flow path is blocked, the S pole of the first magnet 212b The south poles of the magnet 304f face each other, and the same poles face each other. A repulsive force acts between the first magnet 212b and the magnet 304f, and when the float 304 on the side where the magnet 304f is provided falls downward while being urged by the repulsive force, the fluid pressure reducing means 305 also has its own weight. To fall downward. The float 304 falls until it comes into contact with the linear portion 306. On the other hand, the fluid pressure reducing means 305 drops until it abuts on the stepped portion 308.

  As described above, since the second magnet 212b and the magnet 304f have the same polarity, a repulsive force is generated. Therefore, for example, even if the clip 400 is not attached to the opening S1 ′ and the nozzle tube 300 is tilted, the automatic stop nozzle is hung on the opening S1 ′. In addition to dropping, the repulsive force of the second magnet 212b and the magnet 304f is also added, so that the float 304 can be reliably dropped downward.

  When the fluid pressure reducing means 305 falls downward, the valve body 305e is separated from the opening 205, that is, the opening 307a of the rubber packing 307, and the valve body 305e is displaced to a position where the flow path is opened, thereby opening the flow path. . For this reason, the liquid being transferred from the main body of the liquid feeding device passes through the opening 205, passes through the opening 307a of the rubber packing 307, and then flows into the nozzle tube 300 side along the outer periphery of the valve body 305e. It is injected into the secondary container S.

  After the float 304 is dropped and the valve body 305e opens the flow path, when the hand is released from the lever 215 that is rotated downward, the lever 215 rotates counterclockwise by the biasing force of the coil spring 218 and returns to the original horizontal position. Become. In the state where the lever 215 is in the horizontal position, the first magnet 212a and the magnet 304f are opposite to each other, but when the float 304 falls downward, the distance between the first magnet 212a and the magnet 304f is The distance between the first magnet 212a and the magnet 304f is such that no attractive force acts to lift the float 304 and the fluid pressure reducing means 305 upward. Therefore, the valve body 305e keeps the flow path open, and the liquid continues to be injected into the secondary container S. Then, the liquid accumulates in the secondary container S, and the liquid level reaches the float 304.

  Since the float 304 has buoyancy with respect to the liquid, the float 304 is displaced corresponding to the liquid surface position. That is, the float 304 is displaced upward as the liquid level rises.

  Since the magnet 304f is fixed to the tip of the float 304, the magnet 304f is displaced corresponding to the displacement position of the float 304. That is, the magnet 304 f is displaced upward together with the float 304. Then, when the magnet 304f rises to a distance where an attractive force that can pull up the float 304 and the fluid pressure reducing means 305 between the magnet 304f and the first magnet 212a is reached, the float 304 and the fluid pressure reducing means 305 are lifted. However, it is pulled up to the liquid flow control unit 200 side, and the valve body 305e closes the opening 205 liquid-tightly to block the flow path as described above. That is, the float 304 serves to detect the liquid level position, and when the liquid level rises to a predetermined distance from the opening edge S1 ′ of the inlet S1 of the secondary container S on which the nozzle tube 300 is suspended, the float 304 The fluid pressure reducing means 305 is pulled up by the attractive force, and the valve body 305e blocks the flow path.

  The predetermined distance is determined by the length of the float 304, the attractive force of the first magnet 212a and the magnet 304f, and the position where the liquid injection stops when the liquid is accumulated from the opening edge S1 ′. Thus, the length of the float 304 and the attractive force of the first magnet 212a and the magnet 304f are set appropriately. For example, if the distance between the first magnet 212a and the magnet 304f when the attractive force that can lift the float 304 and the fluid pressure reducing means 305 is the same, the length of the float 304 below the magnet 304f is long. The distance from the opening edge S1 ′ to the liquid surface when the valve body 305e shuts off the flow path becomes longer. Conversely, if the float 304 is shorter, the distance between the liquid surface and the opening edge S1 ′ is shorter. Become.

  As described above, in the automatic stop nozzle according to the first embodiment of the present invention, the float 304 rises as the liquid level in the secondary container S rises, and the liquid level and the secondary container S When the distance of the opening edge S1 ′ is a predetermined distance, that is, when the liquid has accumulated up to a predetermined position in the secondary container S, the valve body 305e blocks the flow path by the attractive force of the first magnet 212a and the magnet 304f, The injection of the liquid into the secondary container S is automatically stopped.

  In addition, in the upper part of the nozzle tube 300, holes 309 for air venting are formed in two places on the side surface, and when the liquid level in the nozzle tube 300 rises as the liquid level in the secondary container S rises, The air in the nozzle tube 300 is allowed to escape to the outside of the nozzle tube 300. If the configuration is such that the air in the nozzle tube 300 does not escape as the liquid level in the nozzle tube 300 rises, the air pressure in the nozzle tube 300 becomes higher than the external pressure as the liquid level in the nozzle tube 300 rises. This is because the liquid level in the nozzle tube 300 does not rise.

  Here, the role of the fluid pressure reducing means 305 will be described. The fluid pressure reducing means 305 serves to prevent the liquid flowing down the nozzle tube 300 from directly hitting the float 304. That is, the liquid flowing down in the nozzle tube 300 is subjected to pressure applied for transfer from the main body of the liquid feeding device or dropping pressure when flowing down from the opening 205 into the nozzle tube 300. In the following description, the pressure of the liquid flowing in the flow path is referred to as a flow pressure. Therefore, when the flow pressure is greater than the buoyancy of the float 304 with respect to the liquid or the attractive force of the first magnet 212a and the magnet 304f, if the liquid flowing down the nozzle tube 300 directly hits the float 304, the liquid level becomes secondary. Although the float 304 has been raised from the opening edge S1 ′ of the container S to a predetermined distance, the float 304 cannot be raised, or the float 304 cannot be lifted by the attractive force of the first magnet 212a and the magnet 304f, and the valve body 305e. However, there is a disadvantage that the flow path cannot be blocked.

  In order to eliminate this inconvenience, the flow pressure reducing means 305 is arranged above the float 304 so that the float small diameter portion 304b is covered by the flow pressure reducing means 305 when the float 304 is viewed from above. The part 304 b is arranged so as to be hidden under the fluid pressure reducing means 305. Further, the fluid pressure reducing means 305 is configured not to be displaced below the step 308 due to the engagement between the guide piece 305f and the step 308.

  As described above, the surface (S pole surface) facing the first magnet 212a of the magnet 304f provided in the float small-diameter portion 304b is flat. Therefore, when the liquid flowing from the opening 205 hits this flat surface, the float 304 receives a large fluid pressure. However, when the fluid pressure reducing means 305 is arranged as described above, most of the liquid that has flowed into the nozzle tube 300 from the opening 205 flows down to the tapered surface 304c at the connecting portion between the float small diameter portion 304b and the float large diameter portion 304a. The amount hitting the S pole surface of the magnet 304f is almost eliminated. Then, the liquid that has flowed down to the tapered surface 304c smoothly flows downward along the tapered surface 304c, so that a large load is not applied to the float 304.

  Therefore, the flow pressure applied to the float 304 is increased until the float 304 rises as the liquid level rises and the magnet 304f at the tip of the float 304 abuts the tip protrusion 305b of the hollow portion 305a of the fluid pressure reducing means 305. Can be small. The float 304 rises as the liquid level rises, and when the fluid pressure reducing means 305 is raised while the magnet 304f at the tip of the float 304 is in contact with the tip protrusion 305b of the hollow portion 305a of the fluid pressure reducing means 305, The fluid pressure applied to the fluid pressure reducing means 305 reaches the float 304 as it is.

  However, when this state is reached, the distance between the first magnet 212a and the magnet 304f is close, so that the adsorbing force acting between the first magnet 212a and the magnet 304f causes the flowing liquid to flow into the float 304. Overcoming the load, the float 304 and the fluid pressure reducing means 305 can be displaced upward.

  Until the attractive force of the first magnet 212a and the magnet 304f is large enough to lift the float 304 and the fluid pressure reducing means 305 against the fluid pressure at which the liquid flows down, the magnet 304f at the tip of the float 304 is The vertical position where the step 308 is formed, the magnet 304f at the tip of the float 304, and the hollow of the fluid pressure reducing means 305 so as not to contact the tip protrusion 305b of the hollow part 305a of the fluid pressure reducing means 305. The distance of the front-end | tip protrusion part 305b of the part 305a etc. is set. The entire float 304 may have a diameter smaller than the inner diameter of the hollow portion 305a of the fluid pressure reducing means 305. If comprised in this way, the fluid pressure concerning the float 304 can be made still smaller.

  In the first embodiment described above, portions other than the magnet 304f, the first magnet 212a, and the second magnet 212b, for example, the fluid control unit 200 such as the outer cylinder 201, the inner cylinder 202, and the lever 215, the nozzle tube The 300, the second magnetic body holding means 213, the float 304, the fluid pressure reducing means 305, etc. are made of a non-magnetic material such as polyethylene, vinyl chloride, or polycarbonate.

  If the fluid control unit 200, the nozzle tube 300, the float 304, the fluid pressure reducing means 305, etc. are made of a magnetic material, a magnetic force acts between them and the magnet 304f, the first magnet 212a, or the second magnet 212b. For this reason, the operation of the automatic stop nozzle described above is not normally performed.

  However, it is a small object such as a screw 216 that attaches the front side wall 206 to the integral part of the outer cylindrical body 201, or a distance from the magnet 304f, the first magnet 212a, and the second magnet 212b that does not act on the magnetic force. If so, it is possible to use a magnetic material.

  In the first embodiment described above, the magnet 304f is fixed to the tip of the float 304, but the magnet 304f is not necessarily fixed to the float 304. The magnet 304f may be displaced corresponding to the displacement position of the float 304. For example, as shown in FIG. 6, a hollow portion 304g in which the magnet 304f is accommodated is formed at the tip of the float 304, and the magnet 304f is included therein. May be stored in an unfixed state.

  In the first embodiment described above, both the first magnetic body and the second magnetic body are configured as permanent magnets, but either one is configured as a magnetic body such as iron and one is configured as a permanent magnet. Also good. For example, the magnet 304f provided on the float 304 side is configured as it is, the second magnetic body holding means 213 side has the first magnet 212a as an iron block, and the second magnet 212b portion is not formed with a recess 213a. The second magnetic body holding means 213, which is a nonmagnetic material, is made of the same material.

  With this configuration, when the lever 215 is displaced in the horizontal direction, an attractive force is generated between the iron 304 replacing the magnet 304f on the float 304 side and the first magnet 212a on the second magnetic body holding means 213 side. When the tip of the lever 215 is displaced downward, the magnet 304f faces the nonmagnetic second magnetic body holding means 213 itself, so that the attractive force does not act. Therefore, when the tip of the lever 215 is displaced downward, the float 304 and the fluid pressure reducing means 305 fall downward, and the valve body 305e opens the flow path. Then, when the lever 215 is displaced in the horizontal direction, an attractive force acts according to the distance between the magnet 304f on the float 304 side and the iron block on the second magnetic body holding means 213 side, so that the float 304 is predetermined. When raised to the position, the valve body 305e blocks the flow path. The magnet 304f on the float 304 side may be an iron block, the first magnet 212a on the second magnetic body holding means 213 side may be left as it is, and the portion of the second magnet 212b may be a non-magnetic body as described above.

  Further, in the first embodiment described above, the case where the liquid is transferred from the primary container to the automatic stop nozzle is explained by the case where the main body drive unit of a liquid feeding device such as an electric or manual pump is used. The transfer of the liquid to the automatic stop type nozzle may be performed by the free fall of the liquid with the primary container placed at a position higher than the position of the automatic stop type nozzle.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  FIG. 7 is a front view of the appearance of an automatic stop nozzle according to a second embodiment of the present invention, and FIGS. 8, 9 and 10 show the internal structure of the automatic stop nozzle. .

  In the first embodiment described above, the float 304 is disposed in the flow path, and the fluid pressure reducing means 305 is disposed above the float 304 in order to reduce the amount of liquid that falls down the nozzle tube 300 directly hits the float 304. In preparation. However, when the automatic stop type nozzle is connected to the main body of a liquid feeding device having a high fluid pressure of the liquid to be transferred, such as a water tap, the float 304 rises as the liquid level rises, Even when the tip comes into contact with the tip protrusion 305b of the hollow part 305a of the fluid pressure reducing means 305, the fluid pressure is superior to the attractive force of the magnet 304f and the first magnet 212a on the second magnetic body holding means 213 side. There may be.

  In such a case, even if the fluid pressure reducing means 305 provided with the valve body 305e cannot be raised and the liquid injected into the secondary container S has accumulated up to a liquid level of a predetermined height. There is a problem that the flow path is not blocked and the liquid overflows from the secondary container S.

  Thus, in the second embodiment, the float 700 is arranged outside the liquid flow path so that the float 700 can be raised even when the fluid pressure is high.

  The configuration will be described below. Note that members substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIGS. 8 and 9 are cross-sectional views (see FIG. 10) of the automatic stop nozzle when the liquid flow control unit 500 is in the open state (FIG. 8) and when it is in the shut-off state (FIG. 9). FIG. 3 is an end view of a surface perpendicular to the X axis and including the Y axis.

  FIG. 10 shows a state immediately after the float 700 has fallen downward, and a cross-section (a plane including the X axis and the Y axis) of the automatic stop nozzle when the liquid flow control unit 500 is in a shut-off state as viewed from the side. ) Is an end view of FIG.

  7 to 10, the liquid flows in the direction from the connection pipe 100 toward the nozzle pipe 600 as in the first embodiment.

  Below, the structure of the liquid flow control part 500 is demonstrated first.

  The liquid flow control unit 500 is different from the first embodiment in the shape of the flow path formed in the liquid flow control unit 500, but the other configurations are substantially the same as those of the first embodiment. It is. The liquid flow control unit 500 includes an outer cylindrical body 501 and an inner cylindrical body 502 similar to the outer cylindrical body 201 and the inner cylindrical body 202 of the first embodiment, and the inner peripheral surface of the outer cylindrical body 501. A cylindrical gap 503 is formed between the outer peripheral surface of the inner cylindrical body 502 and the inner cylindrical body 502.

  In the inner cylindrical body 502, a gap 502a having an arc-shaped cross section (a cross section viewed from the front side) is formed along the front-rear direction (the direction along the axis X shown in FIG. 10) on the lower half side. An opening 502 b is formed below the gap 502 a and is connected to the gap 503.

  Further, the gap 502a penetrates the outer cylinder 501 on the rear side and is connected to an opening 501a formed in the lower part of the outer cylinder 501. Therefore, the liquid flowing in from the upper opening 204 flows from the gap 503 in the liquid flow control unit 500 through the gap 502a and flows into the nozzle pipe 600 from the opening 501a. The outer cylinder body 501 and the inner cylinder body 502 are integrally formed via a rear side wall 504 that forms a part of the outer cylinder body 501, and the liquid does not leak from the connecting portion.

  The attachment of the outer cylindrical body 501 and the inner cylindrical body 502 to the front side wall 206, or the configuration of the second magnetic body holding means 213 and other liquid flow control units 500 are substantially the same as those of the first embodiment described above. Is equivalent to

  The nozzle tube 600 is used by being inserted into the secondary container S when the automatic stop type nozzle is used, and the liquid transferred from the main body of the liquid feeding device is supplied from the connection pipe 100 to the liquid flow control unit. It flows into the nozzle tube 600 from the opening 501a through 500 and is injected into the secondary container S. That is, the space from the connection pipe 100 to the gap 503, the gap 502a, and the nozzle pipe 600 is formed as a flow path for the automatic stop nozzle.

  A valve body 505 serving as a flow path blocking unit is provided below the opening 502b. The valve body 505 is formed with a bulging portion 505a bulging upward in the center at a central portion, and a flange-shaped annular portion 505b is formed around the bulging portion 505a.

  The inside of the bulging portion 505a is formed in a hollow cylindrical shape having an inner diameter in which a magnet 506 as a cylindrical first magnetic body described later can be loosely fitted. The valve body 505 is held by the valve body holding portion 507 with the bulging portion 505a facing upward.

  The valve body holding part 507 is comprised from the valve body receiving part 507a and the magnet accommodating part 507b.

  The valve body receiving portion 507a has a cylindrical inner peripheral surface having an inner diameter slightly larger than the outer diameter of the valve body 505, and the valve body 505 is guided by the inner peripheral surface of the valve body receiving portion 507a. It is loosely fitted so that it can be displaced vertically.

  Moreover, the magnet accommodating part 507b is formed below the valve body receiving part 507a, and the magnet 506 is accommodated with S facing upward. The magnet housing portion 507b is formed integrally with the valve body receiving portion 507a, and is formed in a hollow cylindrical shape having an inner diameter to which the magnet 506 can be loosely fitted. As shown in FIG. 11, ribs 507c extending up and down from four sides are formed on the inner diameter surface of the magnet housing portion 507b, and the magnet 506 can be displaced in the vertical direction while being guided by the ribs 507c. ing. When displaced upward, the tip of the magnet 506 is loosely fitted into the bulging portion 505a.

  A packing 508 made of a rubber material is stretched between the valve body 505 and the valve body holding part 507, and the valve body 505 is supported by the packing 508 with respect to the valve body holding part 507. When there is no load on the valve body 505, the valve body 505 is positioned upward as shown in FIG.

  In this state, the packing 508 abuts on the peripheral edge of the opening 502 a, and the opening 502 a is closed by the packing 508.

  On the other hand, when a downward load is applied to the valve body 505, as shown in FIG. 8, the flexible portion 508a of the packing 508 is bent downward, and the valve body 505 is displaced downward. When the valve body 505 is displaced downward, the packing 508 is separated from the opening 502a and opens the opening 502a.

  That is, when the valve body 505 is displaced upward and the opening 502a is closed, the flow path is blocked, and conversely, when the valve body 505 is positioned downward and the opening 204 is opened. Will open the flow path.

  When the flow path is in the closed state, the liquid that has flowed into the gap 503 from the opening 204 cannot flow to the gap 502a side, and the liquid is not transferred to the nozzle tube 600. When the flow path is in an open state, the liquid that has flowed into the gap 503 from the opening 204 flows to the gap 502a side, is transferred to the nozzle tube 600, and is injected into the secondary container S.

  Next, the structure for displacing the valve body 505 up and down will be described.

  When the lever 215 is oriented in the horizontal direction and the first magnet 212a as the second magnetic body is positioned below, an attractive force acts between the magnet 506 as the first magnetic body and the magnet When 506 is attracted by the first magnet 212a, it tends to be displaced upward. When the magnet 506 is displaced upward, the valve body 505 is pushed upward by the magnet 506, and the valve body 505 is displaced upward.

  When the magnet 506 is displaced upward, the valve body 505 is subjected to a force that is pushed upward by the attractive force of the magnet 506 and the first magnet 212a, and the packing 508 makes the opening 502b liquid-tight. The liquid advection from the gap 503 to the gap 502a side is reliably cut off.

  On the other hand, as described above, the magnet 506 is attracted by the first magnet 212a and the valve body 505 is displaced upward, so that the tip of the lever 215 is operated downward and the second magnet as the second magnetic body is operated. When 212b is positioned downward, the magnet 506 and the second magnet 212b face each other, and a repulsive force acts between the magnet 506 and the second magnet 212b. Therefore, the magnet 506 is biased downward while being urged by the repulsive force. Fall. If the magnet 506 is just dropped downward, the valve body 505 is maintained in a state of being displaced upward due to the rigidity of the packing 508. However, when the liquid is transferred from the main body of the liquid feeding device and flows into the gap 503, a downward load acts on the valve body 505 via the packing 508 due to the fluid pressure. Then, the valve body 505 is displaced downward as shown in FIG. 8, the packing 508 opens the opening 502b, and the liquid flows from the gap 503 toward the gap 502a.

  Next, a mechanism for displacing the magnet 506 in the vertical direction will be described.

  As described above, the magnet 506 displaced upward is dropped by receiving the repulsive force between the magnet 506 and the second magnet 212b.

  The configuration for displacing the magnet 506 upward is as follows. A float 700 is disposed below the magnet 506, and a magnet 701 is provided at the tip of the float 700. The magnet 701 is provided so that the same polarity as the magnet 506 faces each other with the north pole facing upward. Accordingly, since a repulsive force acts between the magnet 506 and the magnet 701, when the float 700 is displaced upward, the magnet 506 is also displaced upward in response to the displacement of the float 700. .

  The float 700 is loosely fitted in the float guide tube 702 in a supported state with respect to the inner periphery of the float guide tube 702 by a guide piece 700a. A total of eight guide pieces 700 a are formed radially above and below the float 700 and around the axis Y at equal intervals of 90 degrees.

  The float guide pipe 702 is provided in parallel with the nozzle pipe 600, and when the liquid is injected into the secondary container S as shown in FIG. Therefore, when the liquid accumulates in the secondary container S and the liquid level reaches the float 700, the float 700 having buoyancy with respect to the liquid is displaced corresponding to the liquid level position. That is, the float 700 is displaced upward as the liquid level rises.

  And the magnet 506 in which the repulsive force is acting with respect to the magnet 701 is also displaced corresponding to the displacement position of the float 700. That is, the magnet 506 is displaced upward together with the float 700.

  When the magnet 506 is raised to the position where it is attracted to the first magnet 212a, the magnet 506 is pulled up toward the first magnet 212a, and the valve body 505 is also displaced upward together with this, and the opening 502b is closed. That is, when the float 700, that is, the liquid level rises up to a predetermined distance from the opening edge S1 ′ of the inlet S1 of the secondary container S on which the float guide tube 702 is suspended, the magnet 506 is attracted to the first magnet 212a. Then, the valve body 505 blocks the flow path.

  The predetermined distance is determined by the length of the float 700, the repulsive force of the magnet 701 and the magnet 506, the attractive force of the magnet 506 and the first magnet 212a, and the position of the liquid from the opening edge S1 ′. It is determined by appropriately setting the length of the float 700, the attractive force of the first magnet 212a and the magnet 506, etc. depending on whether or not the liquid injection is stopped when the liquid is accumulated.

  For example, if the distance between the first magnet 212a and the magnet 506 when the first magnet 212a starts to pull up the magnet 506 is the same, the longer the float 700 is, the longer the valve body 505 blocks the flow path. The distance from the opening edge S1 ′ to the liquid surface becomes long. Conversely, if the length of the float 700 is short, the distance between the liquid surface and the opening edge S1 ′ becomes short.

  According to the above-described configuration, since the float 700 is disposed outside the flow path, the float 700 can rise as the liquid level rises regardless of the fluid pressure. Therefore, even when the flow pressure is high, the flow path can be reliably blocked when the liquid level reaches a predetermined height. That is, in the second embodiment, the load due to the fluid pressure on the float 700 and the magnet 506 is extremely small compared to the first embodiment.

  Note that, at the opening end below the float guide tube 702, a line portion 702a that intersects in a cross shape is formed so that the float 700 does not fall out of the float guide tube 702. Since this linear portion 702a is thin, the portion other than the linear portion 702 is open, and the liquid accumulated in the secondary container S enters the float guide tube 702 from this linear portion 702a, and the float guide tube 702 The liquid level position inside and the liquid level position of the secondary container S are made the same.

  Next, the hole 505c formed in the upper end surface of the bulging part 505a of the valve body 505 and the hole 505d formed in the annular part 505b will be described with reference to FIG.

  The hole 505 d is formed through the valve body 505 and the packing 508 at a location corresponding to the gap 503. These holes 505c and 505d have a function of circulating air and liquid in the space P surrounded by the valve body 505 and the valve body holding portion 507 and in the gaps 503 and 502a.

  The hole 505c is the center of the bulging portion 505a, is formed along the Y axis, and is formed with a protruding portion 505c 'protruding toward the magnet 506 so as to surround the hole 505c. The hole 505c is formed for the space P and the gap 502a, and the hole 505d is formed for the space P and the gap 503.

  Specifically, it has the following effects.

  First, the hole 505d will be described. When the valve body 505 is displaced upward, even if the liquid is transferred from the main body side of the liquid delivery device, the flow path is blocked, so that the liquid cannot flow from the gap 503 toward the gap 502a. At this time, the liquid flows from the hole 505d into the space P until the pressure in the space 503 and the space P become equal.

  In the case where the liquid in the space 503 does not flow into the space P, the pressure in the space P is the same as that in the space 502a connected to the hole 505c. Therefore, the space P has a lower pressure than the gap 503 side, and a force that is pushed downward by the pressure difference acts on the valve body 505. Since this force is a force that pushes down the valve body 505 against the attractive force of the first magnet 212a and the magnet 506, the force with which the packing 508 closes the opening 502b is reduced.

  However, by forming the hole 505d, the difference in pressure between the gap 503 and the space P can be eliminated, and generation of a force that pushes down the valve body 505 against the attractive force of the first magnet 212a and the magnet 506. Can be eliminated. The tip of the magnet 506 is covered with a rubber rubber 506a. When the magnet 506 is displaced upward, the hole 505c is blocked by the comb rubber 506a, so that air or liquid in the space P is removed from the hole 505c. It will not end up.

  Next, the hole 505c will be described. As described above, in the state where the magnet 506 is displaced upward and the hole 505c is closed, the lever 215 is rotated so that the second magnet 212b and the magnet 506 face each other, and the magnet 506 reacts with the second magnet 212b. The hole 505c is opened when it falls downward. Then, the liquid and air in the space P are released from the hole 505c toward the gap 502a, and the pressure in the space P becomes smaller than the fluid pressure of the liquid in the gap 503, so that the valve body 505 is lowered and the opening 502b Is opened, the flow path is opened, and the liquid flows from the gap 503 toward the gap 502a.

  As described above, since the magnet 506 is supported by the rib 507c with respect to the inner peripheral surface of the magnet housing portion 507b, a gap 507d is formed between the magnet 506 and the inner peripheral surface of the magnet housing portion 507b. Yes. Therefore, when the magnet 506 falls downward, the air or liquid accumulated in the magnet housing portion 507b on the lower side of the magnet 506 passes through the gap 507d to the upper side of the magnet 506 and passes through the hole 505c to the gap 502a. .

  Next, the operation and operation of the automatic stop nozzle structure according to the second embodiment will be described while supplementing the above description.

  First, prior to the use of the automatic stop type nozzle, as shown in FIG. 12, the nozzle tube 600 and the float guide tube 702 are inserted into the secondary container S into which liquid is injected from the inlet S1 of the secondary container S. To do.

  In the present embodiment, the clip 400 is attached to the float guide tube 702, and the clip 400 is fastened to the opening edge S1 'of the inlet S1, so that the automatic stop nozzle is hung on the opening edge S1'.

  The lever 215 is normally displaced in the horizontal direction, and the first magnet 212a and the magnet 506 are opposed to each other with opposite polarities so that an attractive force acts on each other. It is pulled up to the side 502b and is in a state of closing the opening 502b. That is, the valve body 505 is at a position where the flow path is blocked, and even if liquid is transferred from the main body of the liquid feeding device, it does not flow into the gap 502a side.

  The magnet 506 has a surface (S pole) facing the first magnet 212a so that a sufficient suction force acts between the magnet 506 and the valve body 505 can reliably block the flow path. Surface) is flat.

  When the lever 215 is rotated in the horizontal direction and the flow path is blocked, when the lever 215 is rotated downward (clockwise), the south pole of the second magnet 212b and the south pole of the magnet 506 face each other. The same poles will face each other. Since a repulsive force acts between the second magnet 212b and the magnet 506, the magnet 506 falls downward. Then, as described above, when the liquid is transferred to the gap 503 from the main body of the liquid delivery device, the valve body 505 is pushed downward by the flow pressure, the packing 508 opens the opening 502b, and the flow The road is opened. Thus, the liquid is injected into the secondary container S through the nozzle tube 600 from the gap 502a.

  Even if the automatic stop type nozzle is hung on the opening S1 ′ in a state where the float guide tube 702 is inclined, the magnet 506 and the float 700 are not lowered by gravity, but the second magnet 212b and the magnet 506 are moved. Since the repulsive force is also urged, the magnet 506 and the float 700 can be reliably dropped downward.

  When the valve body 505 opens the flow path and then releases the lever 215 rotated downward, the lever 215 rotates counterclockwise by the biasing force of the coil spring 218 and assumes a horizontal position. In the state where the lever 215 returns to the horizontal position, the first magnet 212a and the magnet 506 are opposite to each other, but when the magnet 506 falls downward, the distance between the first magnet 212a and the magnet 506 is The distance between the first magnet 212a and the magnet 506 is such that no attractive force acts to pull the magnet 506 upward. Therefore, the valve body 505 maintains a state where the flow path is opened, and the liquid continues to be injected into the secondary container S. When the liquid accumulates in the secondary container S and the liquid level reaches the float 700, the float 700 is also displaced upward as the liquid level rises.

  Along with the upward displacement of the float 700, the magnet 506 that causes a repulsive force to act on the magnet 701 provided at the tip of the float 700 also rises. Then, when the magnet 506 is displaced to the distance pulled up by the first magnet 212a and the magnet 506 is pulled up to the first magnet 212a side, the valve body 505 closes the opening 502b and flows as described above. The road will be blocked. That is, when the float 700, that is, the liquid level rises up to a predetermined distance from the opening edge S1 ′ of the inlet S1 of the secondary container S on which the float guide tube 702 is suspended, the magnet 506 is located between the first magnet 212a and the first magnet 212a. The valve body 505 is pulled up by the attractive force and blocks the flow path.

  As described above, the predetermined distance is determined by the length of the float 700, the attractive force of the magnet 506 and the first magnet 212a, and the like.

  As described above, in the automatic stop nozzle according to the second embodiment, the liquid 700 in the secondary container S rises as the liquid level rises, and the liquid level and the opening of the secondary container S increase. When the distance of the edge S1 ′ is a predetermined distance, that is, when the liquid has accumulated up to a predetermined position in the secondary container S, the valve body 505 blocks the flow path by the attractive force of the first magnet 212a and the magnet 506, and 2 The injection of the liquid into the next container S is automatically stopped.

  Note that an air vent hole 703 is formed on the side of the float guide tube 702 on the side surface. When the liquid level in the float guide tube 702 rises as the liquid level in the secondary container S rises, the float guide tube 702 floats. Air in the guide tube 702 is allowed to escape to the outside of the float guide tube 702.

  In the second embodiment described above, portions other than the first magnet 212a, the second magnet 212b, the magnet 506 and the magnet 701, for example, the liquid flow control unit 500, the nozzle tube 600, the second magnetic body holding means 213, the float 700 and the like are the same as those in the first embodiment with respect to the non-magnetic material such as polyethylene and vinyl chloride. In the second embodiment described above, the first magnetic body and the second magnetic body are both configured as permanent magnets. However, the first magnet 212a on the second magnetic body side may be a magnetic body such as iron. Good.

  As for the first magnet 212a on the second magnetic body side, the magnet is used as it is or a magnetic body such as iron is used as described above, but the second magnet 212b is a non-magnetic body without forming the recess 213a. It is the same as that of the above-mentioned 1st Embodiment that it is good also as a structure with the same material as the 2nd magnetic body holding means 213.

  In the first embodiment and the second embodiment described above, only the automatic stop type nozzle has been described. However, the automatic stop type nozzle is driven by an electric pump that manually transfers liquid by the power of a motor or manually. If connected to a liquid feeding device main body such as a manual pump for obtaining power for transferring the liquid or a liquid transfer device utilizing a pressure difference, a liquid feeding device having an automatic stop type nozzle is configured.

  In the above description, the term “liquid” is used as a general term for liquid substances such as water, kerosene, and gasoline.

It is a front view which shows the front of the external appearance of the automatic stop type nozzle which concerns on the 1st Embodiment of this invention. FIG. 5 is a view of the internal structure when the automatic stop nozzle according to the first embodiment of the present invention is in an open state, as viewed from the front side, and is cut along a plane perpendicular to the X axis and including the Y axis shown in FIG. FIG. 7 is a cross-sectional view of the inlet portion of the connecting pipe, and the other is an end view. The figure which looked at the internal structure when the automatic stop nozzle which concerns on the 1st Embodiment of this invention in the interruption | blocking state was seen from the front side, and cut | disconnected by the surface perpendicular | vertical to the X-axis shown in FIG. FIG. 7 is a cross-sectional view of the inlet portion of the connecting pipe, and the other is an end view. The figure which looked at the internal structure when the automatic stop nozzle which concerns on the 1st Embodiment of this invention in an open state was seen from the side, cut | disconnected in the surface containing an X-axis and a Y-axis, and the entrance part of a connecting pipe It is a figure which shows these by sectional drawing and shows others as an end elevation. It is a figure which shows the usage condition of the automatic stop type nozzle which concerns on the 1st Embodiment of this invention. It is a figure which shows the other attachment method to the float of the 1st magnetic body used for the automatic stop type nozzle which concerns on the 1st Embodiment of this invention, and is an end view of a float. It is a figure which shows the external appearance front of the automatic stop type nozzle which concerns on the 2nd Embodiment of this invention. FIG. 10 is a view of the internal structure when the automatic stop nozzle according to the second embodiment of the present invention is in an open state, as viewed from the front side, and cut along a plane perpendicular to the X axis and including the Y axis shown in FIG. FIG. 7 is a cross-sectional view of the inlet portion of the connecting pipe, and the other is an end view. 10 is a view of the internal structure when the automatic stop nozzle according to the second embodiment of the present invention is in a cut-off state, as viewed from the front side, and cut along a plane perpendicular to the X axis and including the Y axis shown in FIG. FIG. 7 is a cross-sectional view of the inlet portion of the connecting pipe, and the other is an end view. It is the figure which looked at the internal structure when the automatic stop type nozzle which concerns on the 2nd Embodiment of this invention is an open state from the side, cut | disconnected by the surface containing an X-axis and a Y-axis, and the entrance of a connecting pipe It is a figure which shows a part with sectional drawing and shows others as an end elevation. It is sectional drawing which cut | disconnected the magnet accommodating part of the automatic stop type nozzle which concerns on the 2nd Embodiment of this invention in the horizontal direction. It is a figure which shows the usage condition of the automatic stop type nozzle which concerns on the 2nd Embodiment of this invention. It is a figure showing the structure of the peripheral part of the valve body 505 of the automatic stop type nozzle which concerns on the 2nd Embodiment of this invention, It is an expanded end elevation cut | disconnected by the surface perpendicular | vertical to the X-axis shown in FIG. is there.

Explanation of symbols

305e 505 Valve body (flow path blocking means)
304 700 Float 304f 506 Magnet (first magnetic body)
212a First magnet (second magnetic body)
212b Second magnet (second magnetic body)
205 502b Opening 305 Fluid pressure reducing means 701 Magnet S Secondary container (container)

Claims (4)

In the automatic stop type nozzle that injects the liquid into the container and stops the injection of the liquid when the liquid level of the injected liquid reaches a predetermined position,
A flow path blocking means that is displaced between a position for blocking the flow path of the liquid and a position for opening the flow path;
A float that is displaced corresponding to the position of the liquid level of the liquid to be injected into the container;
A first magnetic body that is displaced corresponding to the displacement position of the float;
With respect to the first magnetic body, the second magnetic body disposed with the flow path blocking means in a position to block the flow path,
The first magnetic body and the second magnetic body are both composed of permanent magnets, and the second magnetic body is a second magnet that has the same polarity as the first magnet that faces the first magnetic body with a different polarity. With two magnets,
The first magnet and the second magnet are held by a second magnetic body holding means,
The second magnetic body holding means can be displaced between a position where the first magnet is opposed to the first magnetic body and a position where the second magnet is opposed to the first magnetic body. An automatic stop type nozzle, wherein the nozzle is biased from a position facing the first magnetic body toward a position facing the first magnetic body. In the automatic stop type nozzle according to claim 1,
An automatic stop type nozzle provided above the float is provided with fluid pressure reducing means arranged to cover at least a part of the float when the float is viewed from above. In the automatic stop type nozzle that injects the liquid into the container and stops the injection of the liquid when the liquid level of the injected liquid reaches a predetermined position,
A flow path blocking means that is displaced between a position for blocking the flow path of the liquid and a position for opening the flow path;
A float that is disposed outside the flow path and is displaced corresponding to the position of the liquid level of the liquid injected into the container;
A first magnetic body that is displaced corresponding to the displacement position of the float;
A second magnetic body disposed across the position of the flow path blocking means for blocking the flow path with respect to the first magnetic body,
The first magnetic body and the second magnetic body are both composed of permanent magnets, and the second magnetic body is a second magnet that has the same polarity as the first magnet that faces the first magnetic body with a different polarity. With two magnets,
The first magnet and the second magnet are held by a second magnetic body holding means,
The second magnetic body holding means can be displaced between a position where the first magnet is opposed to the first magnetic body and a position where the second magnet is opposed to the first magnetic body. An automatic stop type nozzle, wherein the nozzle is biased from a position facing the first magnetic body toward a position facing the first magnetic body.   A liquid delivery apparatus comprising the automatic stop nozzle according to any one of claims 1 to 3.

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