JP5713347B2 - Pump head - Google Patents

Description

  The present invention relates to a pump head.

  Various pump containers have been proposed in which a pump is attached to a container body, and the liquid in the container body is discharged as a liquid as it is or as a foam.

  The pumps in these pump containers are known to have a fixed suction part that is fixed to the container body, and an operation jet part that is mounted so as to be movable up and down in an upward biased state with respect to the fixed suction part. . For example, if the liquid is poured out as an example, as a fixed suction part, a mounting cap for fitting and fixing to the container body, a cylinder suspended in the container body, and a lower end part of the cylinder A pipe for suction that has its lower end suspended in the container body, and, as an operation jetting part, a pump head fitted on the upper end of a stem in which a piston sliding in the cylinder is connected to the lower part, It is mounted so that it can move up and down in the upward biased state. Then, by moving the working jet part up and down, the liquid in the container is discharged from the nozzle of the pump head by the action of a built-in pump mechanism including a suction valve provided in the lower part of the cylinder and a discharge valve provided in the stem. (For example, refer to Patent Document 1).

  As for the pump head which comprises the upper end of the operation | movement ejection part of an above-mentioned pump container, the thing which curved the nozzle below was known for the purpose of discharge to the proper place like the example of patent document 1. Yes.

JP 2011-073719 A

  However, in the case of such a curved nozzle, there is a risk that die cutting at the time of molding, particularly the nozzle portion is poorly die, the moldability may be impaired, and the yield may be deteriorated. On the other hand, when the nozzle is not curved, the discharge liquid tends to be ejected far away. For example, there is a case where discharge to an appropriate discharge place such as a palm cannot be expected.

  The present invention has been made in view of the above points, and the discharge of liquid, bubbles and the like from the nozzle tip can be accurately discharged to the target site, and the moldability of the nozzle head is also good, The present invention proposes a pump head that can reliably eliminate inconveniences such as deformation of a molded product and has a good yield.

The first means is configured as follows. That is, in the pump B in which the operation ejection part B2 is mounted so as to be movable up and down in an upward biased state with respect to the fixed suction part B1 fitted and fixed to the container body A, the pump is formed integrally with synthetic resin. The head includes a mounting cylinder 40 that is fitted to the upper end of the stem 31 that constitutes the operation ejection portion B2. The nozzle forming body 41A is formed upright on the mounting cylinder 40, and protrudes forward to both side positions of the nozzle forming body 41A. A nozzle forming body 41A provided with a pair of locking arms 42, which is tilted forward and locked to each locking arm 42 to form a nozzle 41 having a downward opening at the tip; 41A is flexible and elastic, and has a vertical cylinder 43 that defines a vertical space p1 that opens at the lower end in the upper end of the mounting cylinder 40, and a horizontal cylinder 44 that defines a horizontal space p2 that is continuous with the tip of the vertical space p1. And composed.

  The second means is configured as follows. That is, the first means includes a recess 47 in which a part extending from the center part to the front end part of the top plate 46 suspending the peripheral wall 45 from the peripheral part is provided in a band shape, and a pair of peripheral walls 45 on both sides of the recess 47 is provided. The locking arm 42 protrudes forward, the upper end is opened in the recess bottom wall 47a, the mounting cylinder 40 is suspended, and the nozzle forming body 41A is erected on the recess bottom wall 47a. A nozzle forming body 41A, in which the base end portion of the cylinder 43 is bent forward and tilted, is locked to each locking arm 42 to form the nozzle 41.

  The third means was configured as follows. That is, in the first means or the second means, the upper edge of the inclined nozzle forming body 41A is positioned below the upper edge of each locking arm 42, and the tip thereof is each locking arm. It was configured to be located behind the tip of 42.

  The fourth means is configured as follows. That is, in any one of the first to third means, the locking means to the locking arms 42 of the inclined nozzle forming body 41A protrudes on both sides of the nozzle forming body 41A. Locking means for locking the provided engaging protrusions 49 to the locking surfaces of the inner lower edges of the respective locking arms 42.

The fifth means is configured as follows. That is, in the fourth means, the locking means of the tilted nozzle forming body 41A to the locking arms 42 horizontally forms the locking surfaces of the locking arms 42 to form the nozzles. the engaging projection 49 projecting from the opposite sides of the body 41A is a locking means formed by a vertically long ridge form.

  According to the present invention, the mounting cylinder 40 fitted to the upper end of the stem 31 constituting the operation ejection part B2 is provided, the nozzle forming body 41A is formed upright on the mounting cylinder 40, and forwards to both side positions of the nozzle forming body 41A. A pair of protruding locking arms 42 is provided, and a nozzle forming body 41A tilted forward is locked to each locking arm 42 to form a nozzle 41 having a downward opening at the tip, forming a nozzle. The body 41A is flexible and elastic, and has a vertical cylinder 43 that defines a vertical space p1 that opens at the lower end in the upper end of the mounting cylinder 40, and a horizontal cylinder that defines a horizontal space p2 that is continuous with the tip of the vertical space p1. 44, the tip opening of the nozzle 41 faces downward, and the sprayed liquid can be reliably ejected to a predetermined ejection site such as a palm without splashing the liquid unnecessarily. Moreover, since the nozzle 41 is configured as the nozzle forming body 41A at the time of molding, the vertical cylinder 43 constituting the nozzle 41 has a lower end opened and a horizontal cylinder 44 has a front end opened, which makes it inconvenient to remove the mold. A pump head with improved yield and good yield can be proposed.

  A concave portion 47 is provided in which a portion extending from the center portion of the top plate 46 extending from the peripheral edge portion to the front end portion is formed in a belt shape, and a pair of locking arms 42 are projected forward from the peripheral walls 45 on both sides of the concave portion 47. Then, the mounting cylinder 40 is suspended by opening the upper end of the concave bottom wall 47a, and the nozzle forming body 41A is erected on the concave bottom wall 47a, and the vertical end of the vertical cylinder 43 is curved forward. When the tilted nozzle forming body 41A is locked to each locking arm 42 to form the nozzle 41, the top plate 46 can more easily push down the working ejection portion B2, and the nozzle forming body 41A can be curved. Since the portion can be stored in the recess 47, it is difficult to receive external force, and inconveniences such as deformation can be prevented as much as possible, and the above-described effects such as improvement in formability and good yield are also exhibited.

  In the case where the upper edge of the tilted nozzle forming body 41A is positioned below the upper edge of each locking arm 42 and the tip thereof is positioned rearward of the tip of each locking arm 42, it is flexible. In this way, the nozzles 41 with high elasticity are protected by the respective locking arms 42 and are difficult to receive external force, and it is possible to prevent inconveniences such as deformation due to the external force of the nozzles 41 and disengagement from the locking arms 42 as much as possible. . Similarly, effects such as the above-described improvement in formability and good yield are also exhibited.

  The locking means for the inclined nozzle forming body 41A to each locking arm 42 has the engaging projections 49 provided on both sides of the nozzle forming body 41A protruding to the locking surface on the inner lower edge of each locking arm 42. In the case where the locking means are respectively locked, there is an advantage that the locking of the nozzle forming body 41A to the locking arm 42 can be performed very easily. Similarly, effects such as the above-described improvement in formability and good yield are also exhibited.

  The engaging means for locking the inclined nozzle forming body 41A to each locking arm 42 forms the locking surface of each locking arm 42 horizontally, and protrudes on both sides of the nozzle forming body 41A. In the case where 49 is in the form of a vertically long protrusion, there is an advantage that the nozzle 41 can be reliably maintained in a horizontal state, and at that time, the opening at the tip of the nozzle 41 is also surely directed in an appropriate direction. Similarly, effects such as the above-described improvement in formability and good yield are also exhibited.

It is a longitudinal cross-sectional view of a state where a pump is attached to the container body. Example 1 It is sectional drawing at the time of shaping | molding of a pump head. Example 1 It is a top view at the time of shaping | molding of a pump head. Example 1 It is a longitudinal cross-sectional view of a pump head. Example 1 It is a top view of a pump head. Example 1 It is a front view of a pump head. Example 1

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a pump B mounted on a container body A.

  The container body A has the mouth and neck portion 12 upright from the trunk portion 10 through the shoulder portion 11.

  The pump B is mounted on the fixed suction part B1 that is fitted and fixed to the container body A, with an operation ejection part B2 that can move up and down in an upward biased state.

  In the illustrated example, the fixed suction part B1 includes a mounting cap 20 for mounting on the container body A, and a cylinder 21 suspended in the container body A, and a suction valve 22 at the lower end of the cylinder 21. Yes. A protective cap 23 is fitted to the upper end of the cylinder 21, and the upper end of the pipe 24 is fitted to the lower end of the cylinder 21, and the lower end is suspended to the inner bottom of the container body A.

  The operation ejection part B2 includes a stem 31 having a piston 30 that slides in the cylinder 21 projecting downward, and a discharge valve 33 is provided in the upper part of the stem 31. Further, the pump head C of the present invention is fitted to the upper end of the stem 31. This operation ejection part B2 is upwardly biased by a coil spring s, and is attached to the fixed suction part B1 so as to be vertically movable.

  The pump head C according to the present invention is made of synthetic resin, and includes a mounting cylinder 40 that is fitted to the upper end of the stem 31 that constitutes the operation ejection portion B2, and a nozzle forming body 41A that communicates with the interior of the mounting cylinder 40 is raised. A pair of locking arms 42 formed forwardly projecting from both sides of the nozzle forming body 41A are formed, and the nozzle forming bodies 41A tilted forward are locked to the locking arms 42 so as to face downward toward the tip. This is configured as a nozzle 41 having an opening.

  The nozzle forming body 41A is flexible and rich in elasticity. As shown by a two-dot chain line in FIG. 1, the nozzle forming body 41A has a vertical cylinder 43 that defines a vertical space p1 that opens at the lower end in the upper end of the mounting cylinder 40, and a vertical space p1. And a horizontal cylinder 44 that defines a horizontal space p2 that is continuous with the tip of the horizontal cylinder 44. The form of the pump B to be mounted is not limited to the one that discharges the liquid described above, but may be one that discharges bubbles, and is fitted into at least the upper end of the stem 31 that constitutes the operation ejection part B2, The present invention can be applied as long as it has a known pump mechanism that can discharge the liquid in the container body A as it is or in the form of bubbles by moving the part B2 up and down.

  The pump head C of this example is integrally formed of synthetic resin, and has a form as shown in FIGS. 2 and 3 at the time of molding. That is, a concave portion 47 is provided in which a portion extending from the central portion of the top plate 46, which is suspended from the peripheral edge portion to the front end portion, is formed in a band shape, and the pair of locking arms 42 are forwardly moved from the peripheral walls 45 on both sides of the concave portion 47. It is protruding. The inner lower edge of each locking arm 42 is used as a locking surface for locking the engaging protrusion 49 of the nozzle forming body 41A, and the locking surfaces are formed horizontally. A mounting cylinder 40 having an upper end opened through a communication hole 48 drilled in the recess bottom wall 47a is suspended from the lower surface of the recess bottom wall 47a, and is mounted on the recess bottom wall 47a through the communication hole 48. The nozzle forming body 41 </ b> A that communicates the inside and the inside of the cylinder 40 is erected. On both sides of the nozzle forming body 41A, engaging protrusions 49 each having a vertically long protrusion shape are provided.

  Therefore, since the lower end of the vertical space p1 is opened in the upper end of the mounting cylinder 40, there is an advantage that the die forming the vertical space p1 and the horizontal space p2 can be very easily released. In other words, the vertical space p1 can be punched downward from the lower end opening, and the lateral space p2 can be punched laterally.

  Further, a screw thread is provided around the inner periphery of the peripheral wall 45 so that it can be screwed and locked to the outer periphery of the protective cap 23 in a state where the operation ejection part B2 is pushed down. Further, a plate-like protrusion 50 is provided on the upper end portion of the mounting cylinder 40.

  As shown in FIGS. 4 to 6, the pump head C formed as described above tilts the nozzle forming body 41 </ b> A forward to lock the engagement protrusions 49 on the locking surfaces of the locking arms 42. Thus, the nozzle 41 having a downward opening at the tip is formed. In the illustrated example, the nozzle 41 is formed by engaging each locking arm 42 with a nozzle forming body 41A in which the base end portion of the vertical cylinder 43 is bent forward and tilted. At that time, the curved portion stops in the recess 47, and each locking arm 42 has the upper edge of the tilted nozzle forming body 41A positioned below the upper edge of each locking arm 42, and the tip thereof. It is configured so as to be located behind the tip of each locking arm 42.

  Since the nozzle forming body 41A is flexible and rich in elasticity, it can be easily tilted and locked. In this case, since the pump head C is integrally formed as a whole, a synthetic resin such as polyethylene having a high characteristic as described above is selected, or in addition to this, the thickness of the nozzle forming body 41A is adjusted. Can be easily tilted.

  In this example, the vertical space p1 is formed in a vertical shape. However, the vertical space p1 is not limited to this, and may be inclined or curved. Similarly, the horizontal space p2 is formed in a horizontal shape. It is not limited to a solid one, and may be inclined or curved. Accordingly, the vertical cylinder 43 and the horizontal cylinder 44 may also have a shape that defines them.

A: Container body 10 ... trunk part, 11 ... shoulder part, 12 ... mouth and neck part B: pump B1: fixed suction part 20 ... mounting cap, 21 ... cylinder, 22 ... suction valve, 23 ... protective cap,
24 ... Pipe B2: Actuating ejection part 30 ... Piston, 31 ... Stem, 33 ... Discharge valve s: Coil spring C: Pump head 40 ... Installation cylinder, 41 ... Nozzle, 41A ... Nozzle forming body, 42 ... Locking arm, 43 ... Vertical cylinder,
44 ... Horizontal cylinder, 45 ... Circumferential wall, 46 ... Top plate , 47 ... Recess, 47a ... Recess bottom wall, 48 ... Communication hole, 49 ... Engagement protrusion, 50 ... Plate-like protrusion, p1 ... Vertical space, p2 ... Horizontal space

Claims (5)

Synthetic resin in the pump (B), which is mounted on the fixed suction part (B1) fitted and fixed to the container body (A), and is equipped with an operation ejection part (B2) that can move up and down in an upward biased state. A pump head formed integrally with
A mounting cylinder (40) that is fitted to the upper end of the stem (31) that constitutes the operation ejection portion (B2) is provided, and a nozzle forming body (41A) is formed upright on the mounting cylinder (40), and the nozzle forming body (41A) ) Provided with a pair of locking arms (42) projecting forward at both side positions, the nozzle forming body (41A) tilted forward is locked to each locking arm (42) and directed downward at the tip Nozzle (41) provided with an opening, and the nozzle forming body (41A) is flexible and elastic and has a vertical cylinder (p1) that defines a vertical space (p1) that opens at the lower end in the upper end of the mounting cylinder (40). A pump head comprising: (43) and a horizontal cylinder (44) defining a horizontal space (p2) continuous with a tip of the vertical space (p1). A concave portion (47) is provided in which a portion extending from the central portion of the top plate (46) from which the peripheral wall (45) is suspended to the front end portion to the front end portion is provided in a band shape, and a pair of peripheral walls (45) on both sides of the concave portion (47). The locking arm (42) is projected forward, the upper end is opened in the recess bottom wall (47a), the mounting cylinder (40) is suspended, and the nozzle forming body (41A) is placed on the recess bottom wall (47a). ) And a nozzle forming body (41A) in which the vertical end of the vertical cylinder (43) is bent forward and tilted is locked to each locking arm (42), and the nozzle (41) The pump head according to claim 1 made. The upper edge of the tilted nozzle forming body (41A) is positioned below the upper edge of each locking arm (42), and the tip thereof is positioned behind the tip of each locking arm (42). The pump head according to claim 1 or claim 2. The locking means to each locking arm (42) of the tilted nozzle forming body (41A) has engaging protrusions (49) projecting on both sides of the nozzle forming body (41A). The pump head according to any one of claims 1 to 3, which is a locking means that is locked to a locking surface of an inner lower edge of (42). The locking means for the inclined nozzle forming body (41A) to each locking arm (42) forms the locking surface of each locking arm (42) horizontally, and the nozzle forming body (41A) pump head according to claim 4 engaging projections projecting from the opposite sides (49) a locking means formed by a vertically long ridge form.