JP2547594Y2 - Liquid ejector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid ejector for ejecting a liquid in a liquid state, or in the form of a mist or a bubble, from a nozzle of the press-down head with a nozzle by lifting and lowering operation. Things.

[0002]

2. Description of the Related Art Conventionally, this type of liquid ejector is equipped with a mounting cylinder which belongs to a vertical reciprocating pump, and which mounts the cylinder to the mouth and neck of a container body at the upper end of the cylinder which houses a required pump mechanism. A holding cylinder for a press-down head is disposed immediately above the mounting cylinder, fixed to the upper end of the cylinder, and a press-down head with a nozzle mechanically connected to the pump mechanism is movable above and below the holding cylinder. And the pump mechanism is operated by raising and lowering the press-down head to obtain the ejection of the liquid in the container from the nozzle on the front surface of the press-down head. A cover cap is detachably attached to the press-down head or the holding cylinder screwed and held to the holding cylinder, and a peripheral wall of the cover cap is formed. On the front There is formed a notch escaping the serial nozzle. The cover cap in this case has the significance of preventing unnecessary operation and mischief of the press head during the product distribution process, preventing a decrease in product value, and psychologically guaranteeing anxiety to the purchaser. .

[0003] One of them is Japanese Utility Model Laid-Open No. 59-12356.
There is the one in No. 8. In this configuration, in the above configuration, an outward flange is projected from the lower end of the mouth and neck of the container body, triangular-wave-shaped external teeth are provided on the outer peripheral surface of the outward flange, and the outer peripheral surface is provided on the inner peripheral surface of the cover cap. A triangular-wave-shaped internal tooth meshing with the triangular-wave-shaped external tooth is formed, and a ridge is formed at an inner edge of a lower end, and the ridge is engaged with the outward flange.

Another one is disclosed in Japanese Utility Model Laid-Open No. 62-118557. In this configuration, a gap is provided between the outer peripheral portions of the holding cylinder and the pressing head screwed and held on the holding cylinder in the above configuration, and the outer diameter of the holding cylinder is slightly larger than the outer diameter of the pressing head. A plurality of engaging vertical ridges which are formed on the outer peripheral surface of the holding cylinder and the lower part of the inner peripheral surface of the cover cap so as to mutually stop and engage with each other. A pair of engaging lateral ridges is provided at an intermediate portion to be engaged with a gap between the outer peripheral portions of the holding cylinder and the press-down head screwed and held on the holding cylinder, and a knob is projected on the back surface of the cover cap. When the cover cap is attached, the inner surface of the top wall of the cover cap is brought into contact with the top surface of the pressing head, and the lower end of the cover cap is brought into contact with the upper surface of the mounting cylinder. The upper part of the inner surface of the cap and the outer surface of the push-down head The lower part of the inner peripheral surface of the cover cap and the outer peripheral surface of the holding cylinder are surface-fitted, and the engaging lateral protrusion on the middle part of the inner peripheral surface of the cover cap is screwed to the holding cylinder and the holding cylinder. This is to engage with the gap between the outer peripheral portions with the held down head.

[0005] Still another example is disclosed in Japanese Utility Model Application Laid-Open No. 63-122664. In this device, an engaging groove is provided on the upper edge of the mounting cylinder, and an engaging ridge is provided on the inner edge of the lower end of the cover cap so as to correspond to the groove. It is.

[0006]

[Problem to be solved by the present invention]
In the case of Japanese Unexamined Patent Application Publication No. 9-123568, the fitting of the cover cap is deep and the fitting (engagement, engagement) stops at the lower end of the cover cap.
Since the cover cap is inclined and the height of the cover cap is large and the notch is deep, the fitting holding force is weakened, and the cover cap is easily detached even with a slight external force. In addition, it is necessary to form the container and the cover cap into complicated and special forms, and molding of a synthetic resin has a disadvantage that the cost of the mold is increased and the cost of the product is extremely high.

[0007] In the case of Japanese Utility Model Application Laid-Open No. 62-118557, the cover cap not only has a dimensional variation in the manufacture but also a variation in the screwing direction of the pressing head and the holding cylinder. There is a drawback that the engagement of the engaging vertical ridge and the engaging horizontal ridge may not be performed accurately, and the cover cap may float and easily come off. Furthermore, since a large number of engaging vertical ridges are formed on the holding cylinder and the cover cap, there is a disadvantage that the cost of the mold is increased in molding the synthetic resin, and the cost of the product is greatly increased.

In the case of Japanese Utility Model Laid-Open Publication No. Sho 63-122664, there is a drawback that the cover cap can be easily attached only by having such an engaging means, but eventually it is easily detached by an external force.

The present invention seeks to eliminate these disadvantages.

[0010]

In order to achieve the above-mentioned object, the present invention belongs to a vertical reciprocating pump, and the cylinder is provided at the upper end of a cylinder 4 having a pump mechanism therein.
The holding cylinder 8 for a press-down head is disposed just above the mounting cylinder, and is fixed to the upper end of the cylinder 4. The pump mechanism is mechanically mounted on the holding cylinder 8. The linked press-down head 12 with nozzle is arranged to be movable up and down, and the pump mechanism is operated by raising and lowering the press-down head to eject the liquid in the container 1 from the nozzle 13 on the front face of the press-down head. In addition to the lowering head 12, the lowering head 12 screwed to the holding cylinder 8 and the lowering head 12 or the A cover cap 21 is detachably attached to the holding cylinder 8, and a notch 20 for escaping the nozzle 13 is provided on a front surface of a peripheral wall 19 of the cover cap.
In the liquid ejector formed with the above, the outer peripheral surfaces of the holding cylinder 8 and the press-down head 12 are formed into a flat circumferential surface having the same diameter or substantially the same diameter, and the holding cylinder 8 and the holding head are screwed and held in the holding cylinder. The inner peripheral surface of the peripheral wall 19 of the cover cap is removably surface-fitted to the outer peripheral surface of the press-down head 12 and its holding cylinder 8, and protrudes into an appropriate position in the middle of the inner peripheral surface of the peripheral wall 19 of the cover cap. A ridge 22 is provided around and the protrusion is detachably fitted into a gap between the outer peripheral portions of the press-down head 12 and the holding cylinder 8 which are screwed and held on the holding cylinder. A small space is provided between the upper surface of the top wall 14 of the pressing head 12 and the inner surface of the top wall of the cover cap 21.

[0011]

With the above construction, the cover cap 21 attached to the cover cap 21 has flexibility in fitting in the turning direction and the vertical direction, thereby increasing the adaptability of the fitting. However, even if there is a slight dimensional variation, it is possible to securely fit. Accordingly, the cover cap 21 is stable and does not come off unexpectedly without any glare, rattling, inclination, or the like. In addition, the attached cover cap 21
Prevents the pushing head 12 screwed into the holding cylinder 8 from screwing.

[0012]

FIG. 1 shows an embodiment of a liquid ejector according to the present invention using a synthetic resin molded member. The illustration shows a cylinder 4 of a vertical reciprocating pump equipped with a required pump mechanism.
Is attached to the mouth and neck portion 2 of the container body 1 at the upper end, and is hung down into the container body. The attachment is performed by attaching the outward flange 5 provided at the upper end of the cylinder 4 to the mouth. Placed on the top surface of the neck 2 via the packing 3, and
A mounting cylinder 6 is screwed onto the outer periphery of the mouth and neck portion 2 and is held down by an inward flange 7 provided at the upper end of the mounting cylinder. A holding cylinder 8 is fixed to the upper end of the cylinder 4, and the holding cylinder is disposed immediately above the mounting cylinder 6. An engaging cylinder fitted and fixed to the inner surface of the upper end of the cylinder 1 and fitted to the outer surface of the upper end of the cylinder 1 from the middle of the lower surface of the outward flange 10 provided at the upper end of the threaded tube is provided vertically. An outer peripheral wall 11 having a diameter slightly smaller than that of the mounting cylinder 6 is suspended from an outer edge of the orientation flange 10, and a lower end of the outer peripheral wall is brought into contact with an upper surface of the mounting cylinder 6. On the holding cylinder 8, a pressing head 12 with a nozzle protruding the nozzle 13 is arranged, and the inner circumference of a small-diameter screw cylinder 23 of an external thread hanging from the center of the lower surface of the pressing head is moved by the pump. It is configured to be mechanically fitted and connected to the mechanism, and to operate the pump mechanism by raising and lowering the press-down head to obtain ejection of the liquid in the container body 1 from the nozzle 13 on the front surface of the press-down head. The outer thread of the small-diameter screw cylinder 23 is screwed and held on the screw pipe 9 of the holding cylinder 8 at the lowest lower limit of the lowering of the press-down head 12. The pump mechanism fits and connects the upper end outer circumference of the discharge pipe 15 freely inserted into the upper part of the cylinder 4 so as to be able to ascend and descend to the inner circumference of the lower end part of the press-down head 12 to secure mechanical communication and liquid communication. An annular piston 17 serving also as a discharge valve is mounted at the lower end of the discharge pipe 15, and a spring 16 for urging the discharge pipe 15, the annular piston 17, and the like upward in the lower portion of the cylinder 4 is provided. A suction valve 18 is provided below, and a suction pipe is fitted vertically from the lower end of the cylinder 4 so that a pumping function is exerted by pushing down the pushing down head 12. In addition, the above pressing head
12, the outer diameter of the outer peripheral wall 24 is formed to have the same diameter as the outer diameter of the outer peripheral wall 11 of the holding cylinder 8, and the lower end of the outer peripheral wall 24 is screwed down to the holding cylinder at the lower end thereof. On the other hand, they are slightly separated from each other with a gap. A transparent cover cap 21 is detachably mounted on the outside of the press-down head 12 to the holding cylinder 8, and the cover cap is formed with a notch 20 for escaping the nozzle 13 on the front surface of the peripheral wall 19, The inner peripheral surface of the peripheral wall 19 is removably surface-fitted to the outer peripheral surfaces of the outer peripheral walls 24 and 11 of the holding head 8 and the holding cylinder 8.
A ridge 22 is provided around the middle part of the inner peripheral surface of 19, and the ridge is detachably fitted into the gap, and the lower end of the peripheral wall 19 is abutted against the upper surface of the mounting cylinder 6. I have. Further, a slight space is provided between the upper surface of the top wall 14 of the pressing head 12 and the inner surface of the cover cap 21. The cover cap 21 that has been used for use may be pulled upward, but in this case, the peripheral wall 19 of the cover cap 21 is elastically deformed and the ridge 22 comes off from the gap.

[0013]

According to the present invention, the outer peripheral surfaces of the holding cylinder 8 and the pressing head 12 are formed into a flat circular surface having the same diameter or substantially the same diameter, and are screwed and held on the holding cylinder. The inner peripheral surface of the peripheral wall 19 of the cover cap is releasably fitted to the outer peripheral surface of the press-down head 12 and the holding cylinder 8 thereof, and a ridge is provided at an appropriate position in the middle of the inner peripheral surface of the peripheral wall 19 of the cover cap. The holding tube 8 is detachably fitted into a gap between the outer peripheral portions of the press-down head 12 having the protrusions screwed and held on the holding tube and the holding tube 8. There is no engaging vertical ridge or the like for non-rotating engagement between the cover cap 21 and the like.
The cover cap 21 fitted and fitted to the outer peripheral surface of
The cover cap 21 can be floated or any other even if the orientation of the screwing between the push-down head and the holding cylinder is not fixed, because flexibility can be provided in the rotation direction, and adaptability of fitting can be increased. The components such as the container 1, the mounting cylinder 6, the holding cylinder 8, the pressing head 12, and the cover cap 21 need to be formed in other special forms. None of them can be formed in a simple form, and the cost of the mold does not increase even when molding with synthetic resin, and the cost of the product can be kept low. In addition, the holding cylinder 8
The inner peripheral surface of the peripheral wall 19 of the cover cap 21 is fitted to the outer peripheral surfaces of the pressing head 12 and the holding cylinder 8 at the lowest lower limit of the downward movement of the pressing head 12 screwed and held. The ridge 22 provided around the middle portion of the inner peripheral surface of the cover cap peripheral wall 19 is fitted into the gap between the outer peripheral portions of the cover cap 21 and the holding cylinder 8. Since it can be held sufficiently by the locking action of the ridge 22, the height of the cover cap 21 is not so high and the notch 20 does not become deep,
The required fitting and holding force can be ensured, and the fitting and holding can be surely performed. In addition, a small space is formed between the upper surface of the top wall 14 of the press-down head 12 and the inner surface of the cover cap 21. Therefore, the inner peripheral surface of the peripheral wall 19 of the cover cap 21 is fitted to the outer peripheral surfaces of the press-down head 12 and the holding cylinder 8 in such a manner, and the ridge 22 at the intermediate portion of the inner peripheral surface of the cover cap peripheral wall 19 is pressed. Even if the cover cap 21 is fitted in the gap between the outer peripheral portions of the lowering head 12 and the holding cylinder 8, the cover cap 21 can have the flexibility of fitting in the vertical direction, and the adaptability of the fitting is increased. The cover cap 21 can be accurately attached and fitted without any slight dimensional variation and no trouble such as floating, so that the cover cap 21 can be stably mounted without inconvenience such as unevenness, rattling, inclination, etc. By external force It is possible to eliminate a simple out-of-mind. The cover cap 21 can prevent screwing of the pressing head 12 with respect to the holding cylinder 3, and can effectively prevent unnecessary operation and mischief of the pressing head in a product distribution process, thereby lowering the product value. Proper prevention can ensure the buyer's sense of security.

[Brief description of the drawings]

FIG. 1 is a half sectional vertical side view showing an embodiment of a liquid ejector according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container body 2 ... Neck and neck part 4 ... Cylinder 6 ... Mounting cylinder 8 ... Holding cylinder 11 ... Outer peripheral wall 12 ... Push-down head 13 ... Nozzle 19 ... Peripheral wall 20 ... Notch 21 ... Cover cap 22 ... Projection 23 ... Small diameter screw Tube 24 ... Outer wall

Claims (1)

(57) [Scope of request for utility model registration] 1. A vertical reciprocating pump, which is provided with a mounting cylinder 6 for mounting the cylinder to the mouth and neck 2 of the container body 1 at an upper end of a cylinder 4 having a pump mechanism therein, and pushing the cylinder directly above the mounting cylinder. A holding cylinder 8 for a lowering head is arranged and fixed to the upper end of the cylinder 4, and a lowering head 12 with a nozzle mechanically connected to the pump mechanism is arranged on the holding cylinder 8 so as to be movable up and down. The pump mechanism is actuated by raising and lowering the press-down head, so as to obtain the ejection of the liquid in the container body 1 from the nozzle 13 on the front surface of the press-down head,
The lowered pressing head 12 can be screwed and held to the holding cylinder 8 at the lowermost limit, and the cover cap is attached to the pressing head 12 or the holding cylinder 8 screwed and held to the holding cylinder 8. In a liquid ejector in which a notch 21 is detachably attached and a notch 20 for escaping the nozzle 13 is formed on the front surface of a peripheral wall 19 of the cover cap, an outer peripheral surface of the holding cylinder 8 and the pressing head 12 have the same diameter. And the inner peripheral surface of the peripheral wall 19 of the cover cap is formed on the outer peripheral surface of the press-down head 12 and the retaining cylinder 8 screwed and held in the retaining cylinder while being formed on a flat circumferential surface having substantially the same diameter. The press-down head 12 which is detachably surface-fitted, and has a ridge 22 provided at an appropriate position in the middle of the inner peripheral surface of the peripheral wall 19 of the cover cap, and the ridge is screwed and held in a holding cylinder. And the outer periphery of the holding cylinder 8 And a small space between the upper surface of the top wall 14 of the press-down head 12 and the inner surface of the top wall of the cover cap 21. Spouter.