JP4341773B2 - Pump ejection head - Google Patents

Description

  The present invention relates to an ejection head of a pump.

  As a pump for liquid ejection, it is used by being mounted on the mouth and neck of the container body, and by moving the ejection head that protrudes in an upward biased state through the stem, the liquid in the container body is moved to the front of the ejection head. What is provided so that it may eject from the nozzle cylinder protruded from is known. In addition, liquid ejectors that prevent drying of the liquid in these nozzle cylinders have been proposed. (For example, refer to Patent Document 1).

The liquid ejector of the above-mentioned patent document 1 ejects liquid in the container by pushing down the ejecting head that protrudes up and down in an upward biased state through a stem penetrating through the center of the mounting cap fitted to the upper part of the container body. A liquid ejector configured to be ejected from a nozzle cylinder protruding from the front part of the head, having a cylindrical shape with an opening at the front part, and both sides and rear surfaces of the stem, and upper and both sides and rear surfaces of the ejection head The bottom bottom edge of the base that covers The cap body, which extends the nozzle cylinder covering part, and the top edge of the top of the nozzle cylinder covering part are pivotally connected to the upper edge, and the fitting cylinder protruding from the back surface can be attached to and detached from the tip of the nozzle cylinder Lid fitted on It is equipped with a cap consisting of a.
Japanese Unexamined Patent Publication No. 11-043165

  The liquid ejector is excellent in preventing the liquid in the nozzle cylinder from being dried and preventing the liquid in the nozzle cylinder from solidifying. The present invention proposes an excellent pump ejection head that prevents the liquid in the nozzle cylinder from drying and solidifying by a method different from the above-mentioned conventional product, is easy to handle, and can close the tip opening closely. Is.

The first means is configured as follows. In other words, the ejection head of the pump is fitted to the upper end of the stem 2 projecting so as to be able to be pushed down in the upward biased state, and has a flow path a connecting the inside of the nozzle cylinder 3 projecting sideways and the inside of the stem 2. An opening / closing lid 8 is provided for opening and closing the tip opening 4 of the nozzle cylinder 3 along the tip surface of the nozzle cylinder 3 so as to be openable and closable, and the opening / closing lid 8 projects from the back surface. A plate-like lid body 11 that pivotally attaches a shaft 9 to a bearing 10 projecting from the tip outer surface of the nozzle cylinder 3 to close the tip opening 4 and a knob projecting from the surface of the lid body 11. 12 and a bulging portion 13 projecting from the back surface of the lid main body 11 and detachably fitted to the tip opening 4. When the opening / closing lid 8 is rotated, the bulging portion 13 is formed. As a pump ejection head, characterized in that there is provided a locking means configured so as to be in contact with and locked to the upper surface of the bearing 10. Configured.

The second means is configured as follows. That is, in the first means, the contact locking of the bulging portion 13 to the upper surface of the bearing 10 is engaged with the engaging recess 14 formed in the upper surface of the bearing 10 of the bulging portion 13. 2. The pump ejection head according to claim 1, wherein the ejection head of the pump is in contact with and locked.

The third means was configured as follows. In other words, the ejection head of the pump is fitted to the upper end of the stem 2 projecting so as to be able to be pushed down in the upward biased state, and has a flow path a connecting the inside of the nozzle cylinder 3 projecting sideways and the inside of the stem 2. An opening / closing lid 8 is provided for opening and closing the tip opening 4 of the nozzle cylinder 3 along the tip surface of the nozzle cylinder 3 so as to be openable and closable, and the opening / closing lid 8 projects from the back surface. A plate-like lid body 11 that pivotally attaches a shaft 9 to a bearing 10 projecting from the tip outer surface of the nozzle cylinder 3 to close the tip opening 4 and a knob projecting from the surface of the lid body 11. 12 and a bulging portion 13 projecting from the back surface of the lid main body 11 and detachably fitted to the tip opening 4, and the shaft hole 15 of the bearing 10 is formed in a non-circular shape. The rotating shaft 9 has the same outer peripheral shape as the shaft hole 15 and can be forcibly elastically deformed and rotated. Configured as injection head of the pump in which the lid 8 is characterized in that a locking means which is composed as to maintain a stable state in the open lid state in at least one place.

The fourth means is configured as follows. In the third means, the non-circular shape is a polygonal shape.

The fifth means is configured as follows. That is, the third means is configured as a jet head of a pump according to claim 3, wherein the non-circular shape is elliptical.

  Since the ejection head 1 of the pump of the present invention is provided with the opening / closing lid 8, if the lid is closed when not in use, it is possible to prevent clogging of the liquid in the nozzle. Inconveniences such as ejection failure can be prevented. Further, the opening / closing lid 8 is rotated in the direction perpendicular to the axis of the nozzle cylinder 3 to open the lid, so that even if it is formed small, it does not get in the way and is easy to handle.

  In addition, the opening / closing lid 8 is a plate-like shape that closes the tip opening 4 by pivotally attaching a rotary shaft 9 projecting from the rear surface of the end portion to a bearing 10 projecting from the top end surface of the nozzle cylinder 3. A lid body 11, a knob 12 projecting from the surface of the lid body 11, and a bulging portion 13 projecting from the back surface of the lid body 11 and removably fitted to the tip opening 4. In such a case, the assembly thereof is extremely easy, and the presence of the bulging portion 13 can ensure more perfect airtightness when closed.

  Further, in the case of providing the locking means for locking the open / close lid 8 in the open state, there is no inconvenience of inadvertent rotation and lowering when the open / close lid 8 is rotated to the open state during use. It is possible to squirt a simple liquid.

  Further, as the locking means, when the opening / closing lid 8 is made of an elastomer, it is highly elastic and therefore has excellent adhesion to the nozzle cylinder 3 and is excellent in sealing performance. When the tip opening 4 is opened by rotating the 8, the frictional force of the contact surface at the pivoted portion of the nozzle cylinder is increased so that the inconvenience such as the opening / closing lid 8 returning during use can be eliminated. It is.

  Further, when the locking means is configured such that the bulging portion 13 is brought into contact with and locked to the upper surface of the bearing 10 when the opening / closing lid 8 is rotated, it has a relatively strong engagement strength. Since the contact between the bulging portion 13 and the upper surface of the bearing 10 is possible, the effect is excellent.

  Further, as the locking means, the shaft hole 15 of the bearing 10 is formed in a non-circular shape, and the rotating shaft 9 has the same outer peripheral shape as the shaft hole 15 and can be forcibly elastically deformed and rotated. In the case where the shape of the shaft hole 15 is selected so that the opening / closing lid 8 maintains a stable state in the closed state and the opened state in at least one place, the lid is similarly opened during use. There is no inconvenience that the open / close lid 8 in the state is rotated and lowered, and good liquid can be ejected, and depending on the shape of the shaft hole 15, a stepwise open state can be revealed.

  The drawing shows an example of the ejection head 1 of the pump of the present invention. The ejection head 1 is configured as a part of the liquid ejection pump A. The pump A is a well-known mechanism that is used by being mounted on a container body (not shown) and pumping up the liquid in the container body and ejecting it. The ejection head 1 is fitted to the upper end portion.

  The ejection head 1 of the present invention is configured such that a nozzle cylinder 3 protrudes laterally and liquid is ejected from a tip opening 4 thereof. Further, a flow path a connecting the inside of the nozzle cylinder 3 and the inside of the stem 2 is provided. In the illustrated example, a vertical cylinder 5 in which the inner periphery of the lower end is closely fitted to the outer periphery of the upper end of the stem 2 is suspended from the center of the back surface of the top plate 6, and the peripheral wall 7 is suspended from the peripheral edge of the top plate 6. The nozzle cylinder 3 is provided in the upper front surface of the opening 5 so as to pass through the front part of the peripheral wall 7 and protrude forward. The flow path a is provided from the stem 2 through the nozzle cylinder 3 through the vertical cylinder 5 to communicate with the tip opening 4.

  In the present invention, an opening / closing lid 8 that closes the tip opening 4 of the nozzle cylinder 3 is provided. The opening / closing lid 8 is configured to turn the tip surface of the nozzle cylinder 3 so as to close the tip opening 4 of the nozzle cylinder 3 so as to be openable and closable. In the embodiment shown in FIGS. 1 to 4, the rotary shaft 9 protruding from the rear surface of the end portion is pivotally attached to a bearing 10 erected on the upper surface of the tip of the nozzle cylinder 3 to close the tip opening 4. The plate-shaped main body 11, a knob 12 projecting from the surface of the main body 11, and a bulging portion 13 projecting from the rear surface of the main body and removably fitted to the tip opening 4 are configured.

  The opening / closing lid 8 can be formed of a synthetic resin or the like, but the whole is preferably made of a soft material. As the soft material, an elastomer such as natural rubber, synthetic rubber or thermoplastic elastomer can be preferably used.

  In the present invention, locking means for locking the open / close lid 8 in the open state is provided. This locking means can adopt various forms. For example, as described above, the entire opening / closing lid 8 is made of a soft material such as an elastomer, so that the opening / closing lid 8 is rotated to the open state by its elastic contact force. It is locked stably.

  Further, as the locking means, the bulging portion 13 may be configured to contact and lock the upper surface of the bearing 10 when the opening / closing lid 8 is rotated. At that time, as shown in the embodiment of FIG. 1, if the engaging recess 14 is formed on the upper surface of the bearing 10 to engage the bulging portion 13 of the opened opening / closing lid 8, more reliable locking can be performed. In this case, it is naturally possible to combine the entire opening / closing lid 8 with the above-described soft material.

  Further, as the locking means, the shaft hole 15 of the bearing 10 is formed in a non-circular shape, and the rotating shaft 9 is configured to have an outer peripheral shape similar to the shaft hole 15 so that forced elastic deformation rotation is possible, You may comprise so that the shape of the said shaft hole may be selected so that the said opening-and-closing lid 8 may maintain a stable state in the closed state and the open state in at least one place. Specifically, for example, as shown in FIG. 5, the shaft hole 15 of the bearing 10 is formed in a square shape whose top and bottom are located, and the rotary shaft 9 is also formed in the same square shape, and the opening / closing lid 8 is provided. It is configured so that a stable state can be maintained in the closed state, the 90 ° rotation state, and the 180 ° rotation state. At this time, the opening / closing lid 8 is formed of a soft material such as an elastomer, and is configured such that the rotating shaft 9 is elastically deformed when rotating from a stable state to the next stable state. The shape of the shaft hole 15 is not limited to that of the above-described embodiment, and may be variously selected as long as it satisfies the above requirements, whether it is elliptical as shown in FIG.

  Further, as another locking means, although not shown, it is also possible to use a locking means by applying a frictional force by making one or both of the opposed surfaces of the opening / closing lid 8 and the bearing 10 rough. .

  The case where the pump A equipped with the ejection head 1 configured as described above is used will be described with reference to the embodiment of FIG. 1. First, the knob body 12 is grasped and the lid body 11 is rotated to turn the tip of the nozzle cylinder 3. Open the opening 4. At this time, the bulging portion 13 of the opening / closing lid 8 engages with the engagement recess 14 on the upper surface of the bearing 10 so that the open state of the tip opening 4 can be reliably maintained. Next, when the ejection head 1 is pushed down, the liquid in the container body is ejected from the tip opening 4 of the nozzle cylinder 3 through the stem 2 via the stem 2 by a known pump mechanism. After use, when the knob 12 is again gripped and the lid body 11 is rotated, the bulging portion 13 is fitted into the tip opening 4 and is airtightly closed.

It is a longitudinal cross-sectional view which shows the ejection head of this invention pump. Example 1 It is a disassembled perspective view of the state which removed the open / close lid of the Example. Example 1 It is explanatory drawing explaining the effect | action of the Example. Example 1 It is a principal part longitudinal cross-sectional view of the state which opened the opening-and-closing lid | cover of the Example. Example 1 It is a principal part expansion perspective view of the opening-and-closing lid part of this invention pump. (Example 2) It is a principal part enlarged front view of the nozzle cylinder part of this invention pump. (Example 3)

Explanation of symbols

2 ... stem, 3 ... nozzle cylinder, 4 ... tip opening, 8 ... open / close lid, 9 ... rotating shaft, 10 ... bearing,
11 ... Lid body, 12 ... Knob, 13 ... Swelling part, 14 ... Engaging recess, 15 ... Shaft hole, A ... Pump,
a ... Flow path

Claims (5)

It is fitted with the upper end of the stem (2) protruding so as to be able to be pushed down in the upward biased state, and is provided with a flow path a connecting the inside of the nozzle cylinder (3) protruding sideways and the inside of the stem (2) . a jet head of the pump, with the nozzle tube (3) is the tip opening (4) of the nozzle tube and (3) along the front end surface lid for openably closed by rotation of (8), The opening / closing lid (8) has a rotating shaft (9) projecting from the back surface pivotally attached to a bearing (10) projecting from the tip outer surface of the nozzle cylinder (3), and the tip opening (4 ), A tab (12) projecting from the surface of the lid body (11), and projecting from the back surface of the lid body (11) to the tip opening (4). The bulging portion (13) is detachably fitted, and the bulging portion (13) contacts and locks the upper surface of the bearing (10) when the opening / closing lid (8) rotates. The pump is characterized by having locking means configured as described above. De. The contact locking of the bulging portion (13) to the upper surface of the bearing (10) is due to the engagement of the bulging portion (13) with an engaging recess (14) formed in the upper surface of the bearing (10). 2. The pump ejection head according to claim 1, wherein the ejection head is a contact locking. It is fitted to the upper end of the stem (2) protruding so as to be able to be pushed down in the upward biased state, and has a flow path a connecting the inside of the nozzle cylinder (3) protruding sideways and the inside of the stem (2). An ejection head of the pump, comprising: an opening / closing lid (8) that pivots the tip opening (4) of the nozzle tube (3) along the tip surface of the nozzle tube (3) so as to be openable and closable. The opening / closing lid (8) has a rotating shaft (9) projecting from the back surface pivotally attached to a bearing (10) projecting from the tip outer surface of the nozzle cylinder (3), and the tip opening (4 ), A tab (12) projecting from the surface of the lid body (11), and projecting from the back surface of the lid body (11) to the tip opening (4). The swelled portion (13) is detachably fitted, and the shaft hole 15 of the bearing (10) is formed in a non-circular shape, and the rotating shaft (9) is similar to the shaft hole 15. Constructed to allow forced elastic deformation rotation by forming an outer shape , Injection head of the pump in which the closing lid in the open lid state in at least one location and closed state (8), characterized in that a locking means which is composed as to maintain a stable state. The ejection head of a pump according to claim 3, wherein the non-circular shape is a polygonal shape. The ejection head of a pump according to claim 3, wherein the non-circular shape is an ellipse.

Images