JP2009050782A - Push-down head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-down head capable of reducing the height of a discharge container. <P>SOLUTION: The push-down head 4 is fitted to a pump 6 having a stem 62 and is provided with a head main body 10 having a nozzle 13 and a valve chamber 15 formed inside, a connection member 20 interposed between the head main body 10 and the stem 62, a valve member 30 to open and close the nozzle 13 housed in the valve chamber 15 and a transportation mechanism 40 for transporting the valve member 30 in a direction to open the nozzle 13 by pushing down the head main body 10. The head main body 10 is provided with a cylindrical peripheral wall part 12 in which the connection member 20 is housed. The connection member 20 is provided with a top plate part 21, a lower tube part 23 suspended on the upper surface of the top plate part 21, an upper tube part 24 erected on the upper surface of the top plate part and communicating respectively with the inside of the lower tube part 23 and the valve chamber 15 and a guide wall part 22 sliding in contact with the inner peripheral surface of the peripheral wall part 12 extending to the upper side in parallel to the center axial line of the peripheral wall surface from the outer edge part of the top plate part 21. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pressing head mounted on a pump.

  Conventionally, a discharge container is provided in which a pump with a pressing head is attached to the mouth of a bottle. The pump includes a pump body including a cylinder and a piston, a mounting cap for mounting on a mouth portion of a bottle container and the like, and a stem communicating with the inside of the pump body. The stem is inserted into a ring penetrating the top plate portion of the mounting cap, and stands upright so as to be pushed in from the top plate portion of the mounting cap in an upward biased state.

  On the other hand, as the pressing head, for example, as shown in Patent Document 1 below, a head body having a nozzle that opens forward, a coupling member interposed between the head body and the stem, and a nozzle There are those provided with a valve member that opens and closes and a moving mechanism that moves the valve member in a direction that opens and closes the nozzle.

The connecting member includes a top plate portion, a lower tube portion that is suspended from the lower surface of the top plate portion, an upper tube portion that is erected on the upper surface of the top plate portion, and downward from the outer edge portion of the top plate portion. And an outer cylinder portion (guide wall portion) provided vertically. The lower cylinder part is fitted to the upper end part of the stem and communicated with the inside of the stem, and is communicated with the inside of the upper cylinder part through a through hole formed in the top plate part.
The head body is provided with a top plate portion and a cylindrical peripheral wall portion suspended from the outer edge portion of the top plate portion, and the inside of the peripheral wall portion contains the above-described connecting member, There is provided a horizontal tube portion in which a valve chamber that can communicate with the outside via a nozzle is formed. The valve member is accommodated in the valve chamber of the head body. In addition, a vertical cylinder portion that communicates with the valve chamber is suspended from the horizontal cylinder portion, and the vertical cylinder portion is fitted to the upper cylinder portion of the connecting member so as to be slidable in the vertical direction. The cylinder portion is communicated with the valve chamber via the vertical cylinder portion, and the head body is attached to the connecting member. And the valve chamber is connected to the inside of the stem via the connecting member (upper cylinder and lower cylinder). Further, the outer cylinder portion of the connecting member described above is slidably contacted with the inner peripheral surface of the peripheral wall portion, whereby the moving direction of the head main body is guided when the head main body is pushed down.

According to the pressing head having the above-described configuration, when the head main body is pushed down with respect to the connecting member, first, the valve member slides backward to open the nozzle. Subsequently, by further pushing down the head body, the stem is pushed downward, and the liquid in the container flows into the valve chamber from the stem and is ejected from the nozzle. After that, when the head body is released, the stem moves upward by the biasing force of the coil spring and the valve member slides forward by the biasing force of the coil spring and closes the nozzle at its front end. To do.
JP 2002-326044 A

  However, in the conventional pressing head described above, the outer cylinder portion is suspended from the outer edge portion of the top plate portion of the connecting member, and this outer cylinder portion is accommodated inside the peripheral wall portion of the head body. There is a problem that the length of the portion in the direction of the material axis increases, and as a result, the height dimension of the discharge container increases. When the height dimension of the discharge container is large, not only the stability and usability (operability) when the discharge container is placed are inferior, but also restrictions on the design and display of goods are increased.

  The present invention has been made in consideration of the above-described conventional problems, and an object thereof is to provide a pressing head capable of reducing the height dimension of the discharge container.

  A pressing head according to the present invention is a pressing head attached to a pump having a stem standing upright so as to be able to be pushed in an upward biased state, and has a nozzle and a valve chamber which can communicate with the outside through the nozzle. A head main body formed inside, a connecting member interposed between the head main body and the stem, a valve member housed in the valve chamber for opening and closing the nozzle, and pressing down the head main body. A moving mechanism that moves the valve member in a direction in which the nozzle is opened, and the head body includes a cylindrical peripheral wall portion that houses the connecting member, and the connecting member includes a top plate portion, A lower cylinder portion suspended from the lower surface of the top plate portion, an upper cylinder portion standing on the upper surface of the top plate portion and communicated with the inside of the lower cylinder portion and the valve chamber, and the top plate From the outer edge of the part to the center of the peripheral wall It is characterized by extending upward in parallel to a line and a, and a guide wall portion which is in sliding contact with the inner peripheral surface of the peripheral wall.

  With such a feature, by depressing the pressing head, the valve member moves in a direction away from the nozzle and the nozzle is opened. At this time, since the peripheral wall portion of the head main body slides along the guide wall portion, the head main body is guided in the central axis direction of the peripheral wall portion, and rattling when the pressing head is pushed down is prevented. Further, by depressing the pressing head, the stem is pushed downward through the connecting member and the pump is operated. For example, the contents in the bottle flow into the valve chamber from the stem and are ejected from the nozzle.

  In the pressing head according to the present invention, relative rotation of the head main body and the connecting member in the circumferential direction of the head main body is restricted on the inner peripheral surface of the peripheral wall portion and the outer peripheral surface of the guide wall portion. In addition, it is preferable that an engaging portion that allows relative movement in the central axis direction is formed.

  This restricts the head body from rotating around the central axis. That is, even if the head main body tries to rotate around the central axis, the head main body does not rotate because it is locked by the engaging portion.

  In the pressing head according to the present invention, it is preferable that the lower cylinder portion is fitted inside the upper end portion of the stem and communicated with the stem.

  As a result, when the pressing head is pressed down, the lower cylinder portion does not interfere with the top plate portion of the mounting cap of the pump, and the pressing head is moved until the top plate portion of the connecting member comes into contact with the top plate portion of the mounting cap. It can be pushed down.

  According to the pressing head according to the present invention, since the guide wall portion extends upward from the outer edge portion of the top plate portion of the connecting member, the length in the material axis direction of the peripheral wall portion of the head body can be shortened. Thus, the height dimension of the discharge container can be reduced as compared with the conventional pressing head.

Hereinafter, embodiments of a pressing head according to the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of an upper portion of a discharge container 1 and shows a pump 2 with a pressing head equipped with a pressing head 4 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. FIG. 3 is a perspective view of the connecting member 20 described later.
In this embodiment, when viewed from the bottle 3 of the discharge container 1, the pressing head 4 side (upper side in FIG. 1) is the upper side, and the opposite side (lower side in FIG. 1) is the lower side. Moreover, the protrusion side (left side in FIG. 1) of the nozzle 13 mentioned later is made into the front, and the other side (right side in FIG. 1) is made into the back. Moreover, the code | symbol L1 shown in FIG. 1 extended in an up-down direction has shown the central axis L1 of the pressing head 4 or the surrounding wall part 12 mentioned later, and the code | symbol L2 shown in FIG. The center axis L2 of the nozzle 13 and the horizontal cylinder part 14 mentioned later is shown.

First, a schematic configuration of the discharge container 1 will be described.
The discharge container 1 is a container that discharges a liquid (not shown) accommodated in the bottle 3 by a pump 2 with a pressing head, and includes a bottle 3 and a pump 2 with a pressing head.
The bottle 3 is a container that contains a liquid, and a mouth 3a is formed at an upper end portion thereof. The mouth portion 3a has a cylindrical shape provided with the central axis L1 as a central axis, and a male screw 3b is formed on the outer peripheral surface thereof.
The pump 2 with a pressing head is for discharging the liquid stored in the bottle 3, and includes a pressing head 4, a mounting cap 5, and a pump body 6.

  The mounting cap 5 is a cap body that is screwed into the mouth portion 3a of the bottle 3, and is provided with the central axis L1 as a central axis and gradually reduced in diameter toward the upper side, and the central axis L1. And a cylindrical inner cylinder part 5b extending downward from the upper end of the outer cylinder part 5a, and a top board part 5c provided in the middle part of the inner cylinder part 5b in the direction of the central axis L1. And. A female screw 5d is formed on the inner peripheral surface of the lower part of the inner cylinder part 5b (the part below the top plate part 5c), and the lower part of the inner cylinder part 5b is screwed into the mouth part 3a of the bottle 3. Yes. The top plate portion 5c has a flat upper surface. The top plate portion 5c is provided with a cylindrical ring portion 5e that extends downward from the center thereof and is open at both ends.

  The pump body 6 is arranged continuously on the lower surface of the top plate portion 5c of the mounting cap 5 and disposed on the axis extension line (center axis L1) of the ring portion 5e. This is a known pump mechanism including a cylindrical piston member 61 provided, a stem 62 connected to the piston member 61, a coil spring and a valve member (not shown), and various pump mechanisms can be used. it can. The stem 62 is a cylindrical member, and stands up so that it can be pushed in an upwardly biased state by a coil spring (not shown). The upper part of the piston member 61 is inserted inside the lower part of the stem 62. The stem 62 is inserted inside the ring portion 5 e and protrudes upward from the top plate portion 5 c of the mounting cap 5. Further, a reduced diameter portion 62a that is gradually reduced in diameter as it goes downward is formed on the inner peripheral surface of the stem 62, and a spherical valve body 50 is placed inside the reduced diameter portion 62a. . In addition, the said valve body 50 may be arrange | positioned inside the upper cylinder part 24 of the connection member 20 mentioned later, or the said valve body 50 does not need to be provided.

  Next, the configuration of the above-described pressing head 4 will be described.

  The pressing head 4 is mounted on the pump body 6 described above, and includes a head body 10, a connecting member 20, a valve member 30, and a moving mechanism 40.

  The head body 10 includes a top plate portion 11, a cylindrical peripheral wall portion 12 extending downward from the outer peripheral edge of the top plate portion 11, a nozzle 13 provided at an upper portion on the front side of the peripheral wall portion 12, The horizontal cylinder part 14 provided under the board part 11 and the partition part 17 fitted by the inner side of the surrounding wall part 12 are provided.

A pressing surface 11 a for pressing with a finger or the like is formed on the top surface of the top plate portion 11. More specifically, the pressing surface 11a has a shape in which a central portion in the left-right direction is recessed in an arc shape.
The peripheral wall portion 12 has a cylindrical shape, the lower end portion of the peripheral wall portion 12 is inserted inside the upper end portion of the inner cylinder portion 5 b of the mounting cap 5, and the head main body 10 is relative to the mounting cap 5. Therefore, it is arranged to be movable in the vertical direction. A pair of convex ribs 12 a (engagement portions) that extend in the direction of the central axis L <b> 1 of the peripheral wall portion 12 and are disposed at intervals in the circumferential direction of the peripheral wall portion 12 on the inner peripheral surface of the peripheral wall portion 12. Are attached at positions facing each other. These convex ribs 12 a are disposed at positions on both the left and right sides of the inner peripheral surface of the peripheral wall portion 12.

  The horizontal cylinder part 14 is a cylinder part in which an inner peripheral hole (valve chamber 15) having a circular cross section is formed. The horizontal tube portion 14 extends in the front-rear direction and is attached to the lower surface of the top plate portion 11 described above. That is, the upper wall of the horizontal tube portion 14 is configured by the top plate portion 11. The horizontal cylinder portion 14 is disposed at the center position in the left-right direction of the top plate portion 11 of the head body 10, and a gap is formed between the side wall portion of the horizontal cylinder portion 14 and the inner peripheral surface of the peripheral wall portion 12. ing. An end surface on the front side of the horizontal tube portion 14 is opened to the outside of the peripheral wall portion 12 through the peripheral wall portion 12, and the valve chamber 15 can communicate with the outside via the nozzle 13. On the other hand, the end surface on the rear side of the horizontal tube portion 14 is closed by an end wall portion 14 a disposed with a gap between the end wall portion and the inner peripheral surface of the peripheral wall portion 12. A circular through hole 14b is formed in the central portion of the end wall portion 14a. Further, the valve chamber 15 (inside the horizontal cylinder part 14) is disposed on the front side (inside of the horizontal cylinder part 14) of the end wall part 14a, and the central cylinder L2 direction (front-rear direction) of the horizontal cylinder part 14 is arranged. A guide tube portion 14c extending in the direction is projected. In addition, a cylindrical vertical tube portion 16 extending in the vertical direction is suspended from the lower wall portion of the horizontal tube portion 14. The vertical tube portion 16 is disposed with the central axis L1 as the central axis. Further, both the upper and lower ends of the vertical tube portion 16 are open, and the interior of the vertical tube portion 16 communicates with the valve chamber 15.

  The partition wall portion 17 is a wall portion disposed perpendicular to the central axis L1. The partition wall portion 17 is provided below the horizontal cylinder portion 14, and the upper surface thereof is in contact with the lower surface of the horizontal cylinder portion 14. The above-mentioned vertical tube portion 16 is provided through the central portion of the partition wall portion 17, and an opening 17 a is formed in the rear portion of the partition wall portion 17 so as to insert a flange member 41 described later. . Further, support portions 17b for supporting a flange member 41 to be described later are provided on both the left and right sides of the opening 17a.

  The nozzle 13 is a cylinder whose both ends are open, and is arranged coaxially with the horizontal cylinder portion 14 (valve chamber 15) and extends in the direction of the central axis L2 (front-rear direction). The rear end portion of the nozzle 13 is fitted inside the front end portion of the horizontal tube portion 14 described above. The nozzle 13 protrudes from the outer peripheral surface of the peripheral wall portion 12, and the inside of the nozzle 13 communicates with the valve chamber 15. Has been. More specifically, the nozzle 13 protrudes outward in the nozzle radial direction from a tapered tip end portion 13a that is gradually reduced in diameter toward the front side and a rear end (end portion on the enlarged diameter side) of the tip end portion 13a. And a ring-shaped flange 13b formed over the entire circumference of the nozzle, and a cylindrical fitting portion 13c that protrudes rearward from the flange 13b and is fitted inside the front end portion of the horizontal cylinder portion 14. I have. On the inner peripheral surface of the nozzle 13 (the fitting portion 13c and the tip end portion 13a), ribs 13d extending in the front-rear direction (nozzle axial direction) are disposed at intervals in the circumferential direction of the nozzle inner peripheral surface. Between these ribs 13d, a flow path 13e for flowing a liquid is formed.

  The connecting member 20 is a member for connecting the head main body 10 to the upper end portion of the stem 62 of the pump main body 6, and is disposed inside the peripheral wall portion 12 of the head main body 10, and between the head main body 10 and the stem 62. It is intervened. As shown in FIG. 3, the connecting member 20 includes a top plate portion 21 in which a circular through hole 21 a is formed in the central portion, and a cylindrical lower tube portion extending downward from the central portion of the top plate portion 21. 23, a cylindrical upper tube portion 24 extending upward from the center portion of the top plate portion 21, and a guide wall portion 22 extending upward from the outer edge portion of the top plate portion 16. Yes.

  The above-described guide wall portion 22 is a wall portion extending in parallel with the central axis L1, and is formed in an arc shape in plan view. As shown in FIG. 2, the guide wall portions 22 are disposed on both the left and right sides of the upper tube portion 24 and the horizontal tube portion 14, and the guide wall portions 22 on both sides are disposed to face each other. . The distal end portion of the guide wall portion 22 is inserted into a gap between the side wall portion of the horizontal cylinder portion 14 and the inner peripheral surface of the peripheral wall portion 12, and the upper end of the guide wall portion 22 and the top plate portion 11 of the head main body 10. There is a gap between the lower surface of the plate. The outer peripheral surface of the guide wall portion 22 (the surface on the opposite side of the opposing surface) is in sliding contact with the inner peripheral surface of the peripheral wall portion 12. A concave groove 22a (engagement portion) extending in the direction of the central axis L1 is formed. The concave groove 22 a is engaged with a convex rib 12 a formed on the inner peripheral surface of the peripheral wall portion 12. The convex rib 12a and the concave groove 22a described above restrict relative rotation of the head main body 10 and the connecting member 20 in the circumferential direction of the head main body and allow relative movement in the direction of the central axis L1.

  The lower cylinder part 23 and the upper cylinder part 24 described above are arranged with the central axis L1 as the central axis. Further, the outer peripheral surface of the upper end portion of the upper tube portion 24 is in sliding contact with the inner peripheral surface of the vertical tube portion 16, and the head main body 10 is disposed so as to be slidable in the vertical direction relative to the connecting member 20. Has been. Moreover, both ends are opened at the lower end of the lower cylinder part 23 and the upper end of the upper cylinder part 24, respectively, and the inside of the lower cylinder part 23 and the inside of the upper cylinder part 24 are connected via the through-hole 21a. Further, the upper end portion of the stem 62 is fitted inside the lower cylinder portion 23. Further, the upper cylinder part 24 is inserted inside the vertical cylinder part 16 of the head body 10 and communicates with the valve chamber 15 via the vertical cylinder part 16.

  The valve member 30 is a rod-shaped member for opening and closing the nozzle 13 and is accommodated in the horizontal cylinder portion 14 (valve chamber 15). Further, the valve member 30 is disposed coaxially with the horizontal cylinder portion 14 (valve chamber 15) and the nozzle 13, and is disposed so as to be movable in the material axis direction (front-rear direction) of the valve member 30. Specifically, the valve member 30 includes, in order from the front side, a distal end portion 30a that is gradually reduced in diameter toward the front (tip), and a large diameter portion 30b that is accommodated in the fitting portion 13c of the nozzle 13. The skirt portion 30c protrudes rearward from the outer edge portion of the rear end portion of the large-diameter portion 30b and gradually increases in diameter toward the rear, and is disposed inside the skirt portion 30c and is large. A small-diameter portion 30d that protrudes rearward from the rear end surface of the diameter portion 30b.

  The distal end portion 30 a of the valve member 30 is detachably fitted into the distal end opening (discharge port 13 f) of the distal end portion 13 a of the nozzle 13. The skirt portion 30 c is inserted into the guide tube portion 14 c in the horizontal tube portion 14. The skirt portion 30c has a rear end portion formed with a folded portion 30e that is folded outward in the radial direction over the entire circumference. The folded portion 30e is in sliding contact with the inner peripheral surface of the guide cylinder portion 14c. ing. The small diameter portion 30d is disposed with a gap between it and the inner peripheral surface of the skirt portion 30c. Further, the rear end portion of the small diameter portion 30d is inserted into a through hole 14b formed in the end wall portion 14a of the horizontal cylinder portion 14, and between the end wall portion 14a and the inner peripheral surface of the peripheral wall portion 12. It protrudes into the formed gap. Further, a recessed groove 30f that is recessed inward in the radial direction is formed on the rear end portion of the small diameter portion 30d over the entire circumference.

  The valve member 30 having the above-described configuration is configured such that the folded portion 30e of the skirt portion 30c is guided by the guide tube portion 14c, and the large-diameter portion 30b is guided by the rib 13d of the nozzle 13, thereby The member 30 moves in the material axis direction.

  The moving mechanism 40 is a mechanism that moves the valve member 30 in a direction (rearward) in which the nozzle 13 is opened by pushing down the head body 10. The moving mechanism 40 includes a flange member 41 that can rotate around a rotation shaft 41c that extends in the left-right direction, and a coil spring 42 that biases the valve member 30 forward.

  The collar member 41 is a member formed in a square shape when viewed from the left-right direction. Specifically, the flange member 41 includes a first arm portion 41a having a U-shape in plan view, a plate-like second arm portion 41b connected to the first arm portion 41a at an angle, And a pin-shaped rotating shaft 41c projecting from the left and right side surfaces of the connecting portion between the one arm portion 41a and the second arm portion 41b. The first arm portion 41 a is disposed below the partition wall portion 17 of the head main body 10, and a tip portion thereof is in contact with the upper surface of the top plate portion 21 of the connecting member 20. Moreover, the vertical cylinder part 16 is arrange | positioned inside the 1st arm part 41a. The second arm portion 41 b protrudes above the partition wall portion 17 from the opening 17 a formed in the partition wall portion 17, and is in a gap between the end wall portion 14 a of the horizontal cylinder portion 14 and the inner peripheral surface of the peripheral wall portion 12. Has been placed. A concave portion 41d cut out in a U-shape is formed at the upper end portion of the second arm portion 41b. The concave portion 41d is engaged with a concave groove 30f formed at the rear end portion of the valve member 30. . The rotation shaft 41 c is pivotally supported by the support portion 17 b of the partition wall portion 17.

  The coil spring 42 is accommodated in the horizontal cylinder portion 14 (valve chamber 15) and is arranged coaxially with the valve member 30. Specifically, the coil spring 42 is provided between the skirt portion 30 c and the small diameter portion 30 d of the valve member 30, and the rear end surface of the large diameter portion 30 b of the valve member 30 and the end wall of the horizontal cylinder portion 14. It is interposed between the part 14a. In addition, it is preferable to use the coil spring 42 having a weaker urging force (restoring force) than a coil spring (not shown) of the pump body 6 described above. That is, it is preferable to use a coil spring 42 of the moving mechanism 40 having a smaller spring constant than a coil spring (not shown) of the pump body 6.

  Next, the operation of the pressing head 4 having the above configuration will be described.

  First, the pressing surface 11a of the head body 10 is pressed with a finger or the like, and the head body 10 is pressed down. At this time, the connecting member 20 does not move, and the valve member 30 and the moving mechanism 40 move downward together with the head main body 10, so that the flange member 41 rotates and the valve member 30 moves backward. More specifically, since the rotary shaft 41c of the flange member 41 is lowered in a state where the lower end of the first arm portion 41a of the flange member 41 is in contact with the upper surface of the top plate portion 21 of the connecting member 20, the flange member 41 is The upper end of the two arm portions 41b is rotated around the rotation shaft 41c in a direction to move backward. At this time, since the concave portion 41d of the second arm portion 41b is hooked in the concave groove 30f of the valve member 30, the rear end portion of the valve member 30 is pulled rearward by the rotating collar member 41, and the valve member 30 Moves backwards. Thereby, the front-end | tip part 30a of the valve member 30 spaces apart from the discharge outlet 13f of the nozzle 13, and the nozzle 13 is opened.

  When the head main body 10 is pushed down, the peripheral wall portion 12 of the head main body 10 moves along the inner cylinder portion 5 b of the mounting cap 5. Further, the peripheral wall portion 12 of the head main body 10 slides downward along the guide wall portion 22 of the connecting member 20, and the vertical tube portion 16 of the head main body 10 moves downward along the upper tube portion 24 of the connecting member 20. Slide. For this reason, the head main body 10 descends along the direction of the central axis L1. At this time, since the guide wall portion 22 is disposed on both sides of the horizontal cylinder portion 14, the guide wall portion 22 does not interfere with the horizontal cylinder portion 14, the flange member 41, etc. Can be pushed down relative to the connecting member 20.

  Further, when the head body 10 is pushed down, the convex ribs 12 a formed on the inner peripheral surface of the peripheral wall portion 12 and the concave grooves 22 a formed on the outer peripheral surface of the guide wall portion 22 of the connecting member 20 are engaged. Therefore, the rotation of the head body 10 around the central axis L1 is restricted. That is, even if the head main body 10 tries to rotate around the central axis L1, the convex rib 12a and the concave groove 22a are locked, so that the head main body 10 is prevented from rotating around the central axis L1.

  When the valve member 30 is pulled rearward, the folded portion 30e of the skirt portion 30c of the valve member 30 slides on the inner peripheral surface of the guide tube portion 14c of the horizontal tube portion 14, and the large size of the valve member 30. The diameter portion 30 b slides on the rib 13 d of the nozzle 13. For this reason, the valve member 30 moves rearward along the central axis L <b> 2 of the horizontal cylinder portion 14.

  Subsequently, when the head main body 10 is further pushed down, the lower end of the vertical tube portion 16 of the head main body 10 comes into contact with the upper surface of the top plate portion 21 of the connecting member 20 and / or the second arm of the flange member 41. The upper end portion of the portion 41 b abuts on the inner peripheral surface of the peripheral wall portion 12 of the head body 10, so that the rotation of the flange member 41 is restricted. As a result, the connecting member 20 is pressed downward by the vertical tube portion 16 and / or the flange member 41, is lowered together with the head body 10, and the entire pressing head 4 is pressed down. At this time, the pressing head 4 is pressed until the lower end surface of the lower cylindrical portion 23 of the connecting member 20 and / or the lower end surface of the peripheral wall portion 12 of the head body 10 abuts on the upper surface of the top plate portion 5 c of the mounting cap 5. It is possible to push down the head 4.

  As described above, when the connecting member 20 is lowered, the stem 62 fitted to the lower cylinder portion 23 of the connecting member 20 is lowered, and the piston member 61 of the pump body 6 fitted to the stem 62 is pushed down. It is done. Thereby, the liquid stored in the bottle 3 is transferred to the valve chamber 15 by the pump mechanism of the pump body 6 and discharged from the discharge port 13 f of the nozzle 13. More specifically, the liquid in the bottle 3 flows into the cylinder 60 when the pushed-down piston member 61 returns upward. The liquid in the cylinder 60 passes through the piston member 61 when the pressing head 4 is pushed down, and further passes through the insides of the lower cylinder portion 23, the upper cylinder portion 24, and the vertical cylinder portion 16 of the head body 10. It is circulated and transferred to the valve chamber 15. The liquid in the valve chamber 15 is discharged to the outside from the discharge port 13f through the flow path 13e formed between the ribs 13d of the nozzle 13.

  Next, when the finger or the like that has pressed the pressing surface 11a of the head body 10 is released and the depression of the head body 10 is released, the piston member 61 is urged upward by a coil spring (not shown) of the pump body 6 and lifts. At the same time, the valve member 30 is biased forward by the coil spring 42 in the valve chamber 15 and moves forward.

  When the piston member 61 rises due to the release of the push-down, the stem 62 fitted to the piston member 61 rises, and the connecting member 20 fitted to the stem 62 rises. As a result, the vertical tube portion 16 of the head body 10 is pressed upward by the top plate portion 21 of the connecting member 20, the head body 10 is pushed up, and the head body 10 moves upward with respect to the mounting cap 5.

Further, when the valve member 30 moves forward, the tip portion 30a of the valve member 30 is fitted into the discharge port 13f of the nozzle 13, and the nozzle 13 is closed. Further, when the valve member 30 moves forward, the recessed portion 41d of the second arm portion 41b of the flange member 41 is hooked in the recessed groove 30f of the rear end portion of the valve member 30, so that the flange member 41 is The upper end of the arm portion 41b is rotated in the direction of moving forward. Thereby, the first arm portion 41a of the flange member 41 takes a reaction force from the upper surface of the top plate portion 21 of the connecting member 20, and the head body 10 is pushed upward together with the flange member 41 (moving mechanism 40) and the valve member 30. The head body 10 moves upward with respect to the connecting member 20.
Thus, the pressing head 4 returns to the original position.

  According to the pressing head 4 having the above-described configuration, since the guide wall portion 22 extends upward from the outer edge portion of the top plate portion 21 of the connecting member 20, the length in the material axis direction of the peripheral wall portion 12 of the head body 10 is increased. The height (height) can be shortened. That is, the length dimension of the peripheral wall portion 12 can be reduced by the length dimension of the outer cylinder portion (downwardly provided from the outer edge portion of the top plate portion of the connecting member) in the conventional pressing head. . Thereby, compared with the conventional pressing head, the height dimension of the discharge container 1 can be made small, and the stability and operability (usability) of the discharge container 1 can be improved. It is possible to reduce the restriction on design and the restriction on displaying the product.

  Further, according to the pressing head 4 having the above-described configuration, the convex rib 12a formed on the inner peripheral surface of the peripheral wall portion 12 and the concave groove 22a formed on the outer peripheral surface of the guide wall portion 22 are engaged. Since the rotation of the head body 10 around the central axis L1 is restricted, when the head body 10 is pushed down, it is possible to prevent a problem that the head body 10 rotates and liquid is discharged in an unexpected direction.

  Further, according to the pressing head 4 having the above-described configuration, the guide wall portions 22 are disposed on both sides of the horizontal cylinder portion 14, and the guide wall portions 22 are arranged on the horizontal cylinder portion 14 and the flange member 41. Since the head main body 10 can be pushed down relative to the connecting member 20 without interference, the height dimension of the guide wall portion 22 can be increased. As a result, the movement of the head main body 10 relative to the connecting member 20 can be guided more reliably, and rattling of the head main body 10 can be prevented.

As mentioned above, although the embodiment of the pressing head according to the present invention has been described, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the present invention.
For example, in the above-described embodiment, the upper end portion of the stem 62 is fitted to the inside of the lower cylindrical portion 23 of the connecting member 20, but the present invention can be applied to the upper end portion of the stem 162 as shown in FIG. 4. It is preferable that the lower cylinder part 123 of the connection member 120 is fitted inside. As a result, the pressing head 4 can be pushed down until the top plate portion 21 of the connecting member 120 contacts the top surface of the top plate portion 5c of the mounting cap 5, so that the protruding length H of the stem 162 can be shortened. In addition, the height of the discharge container 1 can be further reduced as compared with the conventional pressing head.

  Further, in the above-described embodiment, the moving mechanism 40 that moves the valve member 30 is a mechanism that uses the flange member 41, but the present invention is not limited to the moving mechanism 40 described above. The valve member 30 may be moved by another moving mechanism.

  For example, as shown in FIG. 5, it is also possible to use a moving mechanism 140 including a moving part 141 and a receiving part 142 that are slidably contacted via inclined surfaces 141a and 142a inclined with respect to the central axis L2 of the valve member 30. It is. More specifically, the moving portion 141 provided at the rear end portion of the valve member 30 is formed with an inclined surface 141a that is inclined downward toward the rear. On the other hand, the receiving portion 142 erected on the top plate portion 21 of the connecting member 20 is formed with an inclined surface 142a inclined downward as it goes rearward. These inclined surfaces 141 a and 142 a are in contact with each other, and the moving portion 141 is provided so as to be movable along the inclined surface 142 a of the receiving portion 142. According to the moving mechanism 140 having the above-described configuration, when the head main body 10 is pushed down, the moving unit 141 moves rearward and obliquely downward so as to slide down along the inclined surface 142a of the receiving unit 142. Thereby, the valve member 30 attached to the moving part 141 moves backward, and the nozzle 13 is opened. Further, when the depression of the head main body 10 is released, the valve member 30 is biased forward by a coil spring (not shown). As a result, the valve member 30 moves forward, and the nozzle 13 is closed by the valve member 30. At this time, as the valve member 30 moves forward, the moving portion 141 moves diagonally forward and upward so as to slide along the inclined surface 142a of the receiving portion 142. Thereby, the head main body 10 is pushed up with respect to the connection member 20, and returns to the original position.

  Further, in the above-described embodiment, the convex ribs 12 a are respectively provided on the left and right side portions of the inner peripheral surface of the peripheral wall portion 12, and the concave groove 22 a is provided in the circumferential central portion of the outer peripheral surface of the guide wall portion 22 of the connecting member 20. Although formed, the present invention is not limited to the configuration described above. For example, a plurality of convex ribs 12 a are respectively provided on the left and right side portions of the inner peripheral surface of the peripheral wall portion 12, and a plurality of concave grooves 22 a that engage with the convex rib 12 a are provided on the outer peripheral surface of the guide wall portion 22 of the connecting member 20. The formed structure may be sufficient. Moreover, the structure by which the ditch | groove was formed in the internal peripheral surface of the surrounding wall part 12, and the convex rib engaged with the said ditch | groove on the outer peripheral surface of the guide wall part 22 may be provided. In addition, the guide wall portion 22 projects from the outer edge surface of the top plate portion 21 so that a step is formed between the outer edge surface of the top plate portion 21 and the outer peripheral surface of the guide wall portion 22. The groove may be formed on the inner peripheral surface of the portion 12 so as to engage with the guide wall portion 22. Furthermore, it is possible to adopt a configuration in which the engaging portions such as the convex ribs 12a and the concave grooves 22a are not provided.

  In the above-described embodiment, the pressing head 4 attached to the pump body 6 that discharges the liquid is described. However, the pressing head according to the present invention is a pump that discharges other internal solution such as bubbles ( It is also possible to attach it to a former pump or the like.

  In the above-described embodiment, the nozzle 13 is directed forward (in a direction orthogonal to the central axis L1). However, in the present invention, the nozzle 13 is directed upward (in a direction parallel to the central axis L1). Alternatively, the nozzle 13 may be directed obliquely upward.

  In addition, in the range which does not deviate from the main point of this invention, it is possible to replace suitably the component in above-mentioned embodiment with a well-known component, and you may combine the above-mentioned modification suitably.

It is a longitudinal cross-sectional view showing the pump with a pressing head with which the pressing head for demonstrating embodiment of this invention was mounted | worn. It is sectional drawing between AA shown in FIG. It is a perspective view showing the connection member for demonstrating embodiment of this invention. It is a longitudinal cross-sectional view of the pressing head for demonstrating other embodiment of this invention. It is a longitudinal cross-sectional view of the pressing head for demonstrating other embodiment of this invention.

Explanation of symbols

1 Discharge container 2 Pump with pressing head 4 Pressing head 6 Pump body (pump)
10 head body 12 peripheral wall 12a convex rib (engagement part)
13 Nozzle 15 Valve chamber 20, 120 Connecting member 21 Top plate portion 22 Guide wall portion 22a Groove (engagement portion)
23, 123 Lower cylinder part 24 Upper cylinder part 30 Valve member 40, 140 Moving mechanism 62, 162 Stem

Claims (3)

A pressing head attached to a pump having a stem standing upright so as to be able to be pushed in an upward biased state,
A head body having a nozzle and having a valve chamber formed therein that can communicate with the outside through the nozzle;
A connecting member interposed between the head body and the stem;
A valve member housed in the valve chamber for opening and closing the nozzle;
A moving mechanism for moving the valve member in a direction to open the nozzle by pushing down the head body,
The head body is provided with a cylindrical peripheral wall portion that accommodates the connecting member,
The connecting member includes a top plate portion, a lower cylinder portion that is suspended from the lower surface of the top plate portion, and an upper surface of the top plate portion that communicates with the inside of the lower cylinder portion and the valve chamber. And a guide wall portion that extends upward from the outer edge portion of the top plate portion in parallel with the central axis of the peripheral wall portion and is in sliding contact with the inner peripheral surface of the peripheral wall portion. A pressing head characterized by that. The pressing head according to claim 1, wherein
The inner peripheral surface of the peripheral wall portion and the outer peripheral surface of the guide wall portion restrict relative rotation of the head main body and the connecting member in the circumferential direction of the head main body and relatively move in the central axis direction. A pressing head, characterized in that an engaging portion is formed to allow the above. In the pressing head according to any one of claims 1 and 2,
The lower cylinder part is fitted inside the upper end part of the stem, The pressing head characterized by things.

Images