JPH08105U - Liquid ejector - Google Patents

Abstract

(57) [Summary] [Purpose] The conventional cover has some drawbacks such as unstable cover cap, easy removal even with slight external force, and high cost of the product. It is what In a conventional constant liquid ejector, the holding cylinder 8 and the pressing head 12 are formed to have the same or substantially the same outer diameter, and the holding cylinder 8 is screwed and held. The inner peripheral surface of the peripheral wall 19 of the cover cap is removably surface-fitted to the outer peripheral surfaces of the lowering head 12 and its holding cylinder, and the ridge 22 is formed at an appropriate position on the inner peripheral surface of the peripheral wall 19 of the cover cap. Around the circumference of the holding cylinder 8 so that the protrusion is screwed and held in the holding cylinder 8 and the holding cylinder is detachably fitted into the gap between the outer peripheral portions of the holding cylinder and the pressing cylinder. A small space is provided between the upper surface of the top wall 14 of the lowering head 12 and the inner surface of the cover cap 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid ejector for ejecting a liquid in a liquid state or in a mist state or a bubble state from a nozzle of a pressing head with a nozzle ascending and descending.

[0002]

[Prior art]

 Conventionally, this type of liquid ejector is equipped with a mounting cylinder that belongs to a vertical reciprocating pump and that attaches the cylinder to the mouth and neck of the container body at the upper end of the cylinder that contains the required pump mechanism. A holding cylinder for the push-down head is arranged just above the cylinder and fixed to the upper end of the cylinder, and a push-down head with a nozzle mechanically linked to the pump mechanism is provided on the holding cylinder so as to be movable up and down. Then, the pump mechanism is operated by raising and lowering the pressing head to obtain the ejection of the liquid in the container body from the nozzle on the front surface of the pressing head. It is constructed so that it can be screwed and held in a holding cylinder, and a cover cap is detachably attached to the pressing head or the holding cylinder screwed and held in the holding cylinder, and a peripheral wall of the cover cap is attached. Noz above on the front There is the formation of the cut-out to escape the. In this case, the cover cap has the meaning of preventing unnecessary operation of the push-down head and mischief during the product distribution process, preventing the decline in product value, and psychologically ensuring the anxiety of the purchaser. .

[0003] One of them is disclosed in Japanese Utility Model Laid-Open No. 59-123568. In this structure, in the above structure, an outward flange is projected at the lower end of the mouth-neck portion of the container body, triangular external teeth are provided around the outer peripheral surface of the outward flange, and the outer peripheral surface of the outer flange is provided on the inner peripheral surface of the cover cap. The triangular wave-shaped internal teeth that mesh with the triangular wave-shaped external teeth are formed, and a ridge is formed on the inner edge of the 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 structure, in the above structure, a gap is provided between the outer circumferences of the holding cylinder and the push-down head screw-held in the holding cylinder, and the outer diameter of the holding cylinder is larger than the outer diameter of the push-down head. It is formed to be slightly larger, and a plurality of engaging vertical ridges are provided to prevent the rotation of the outer peripheral surface of the holding cylinder and the lower inner peripheral surface of the cover cap from each other. A pair of engaging lateral ridges for engaging with the gap between the outer peripheral portions of the holding cylinder and the push-down head screwed and held by the holding cylinder are provided in the middle of the peripheral surface, and 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 pushed down to abut the top surface of the head, and the lower end of the cover cap abuts the top surface of the mounting cylinder. , The upper part of the inner surface of the cover cap and the outer part of the pressing head Are surface-fitted, and the lower inner peripheral surface of the cover cap and the outer peripheral surface of the holding cylinder are surface-fitted to each other. It is to be engaged with the clearance between the outer peripheral portion of the push-down head that is screwed and held in the cylinder.

Yet another one is disclosed in Japanese Utility Model Laid-Open No. 63-122664. This is one in which an engaging groove is provided around the upper edge of the mounting cylinder, and correspondingly, an engaging ridge is provided around the inner edge of the lower end of the cover cap to engage with each other. Is.

[0006]

[Problems to be solved by the device]

 However, in the case of the above-mentioned Japanese Utility Model Laid-Open No. 59-123568, since the cover cap is deeply fitted and the fitting (engagement, engagement) is stopped at the lower end portion of the cover cap, the rattling, rattling, tilting, etc. In addition, since the cover cap is high and the notch 20 is deep, the fitting holding force is weakened, and even a slight external force can easily come off. In addition, the container body and the cover cap need to have a complicated special shape, and the cost of the mold for the synthetic resin molding is high, and the cost of the product is extremely high.

In the case of the above-mentioned Japanese Utility Model Laid-Open No. 62-118557, not only is there dimensional variation in manufacture, but there is also variation in the screwing direction between the push-down head and the holding cylinder. The bar cap may not fit properly, and the vertical engagement ridges and the horizontal engagement ridges may not engage properly, causing the cover cap to float and come off easily. In addition, there are many drawbacks.Because a large number of engaging vertical ridges are formed on the holding cylinder and the cover cap, the mold cost for synthetic resin molding is high, and the cost of the product is significantly high. is there.

Further, in the case of the above-mentioned Japanese Utility Model Laid-Open No. 63-122664, even if the cover cap is easily attached only by having such an engaging means, in the end, it is easily detached by an external force. There are drawbacks.

The present invention seeks to eliminate these drawbacks.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention belongs to a vertical reciprocating pump, and is equipped with a mounting cylinder 6 for mounting the cylinder to a mouth / neck portion 2 of a container body 1 at an upper end portion of a cylinder 4 which houses a required pump mechanism. , A holding cylinder 8 for a push-down head is arranged directly above the mounting cylinder, is fixed to the upper end of the cylinder 4, and is pushed down onto the holding cylinder 8 mechanically linked to the pump mechanism. The head 12 is arranged so as to be movable up and down, and the pump mechanism is operated by raising and lowering the pressing head so that the nozzle 13 on the front surface of the pressing head can jet the liquid in the container body 1, and the head 12 can be lowered. The press-down head 12 is screwed and held by the holding cylinder 8 at the lowest limit, and the press-down head 12 and the holding cylinder 8 screw-held by the holding cylinder 8 are covered with the cover cap 21. Detachably attach the cover In the liquid ejector in which the notch 20 for escaping the nozzle 13 is formed on the front surface of the peripheral wall 19 of the cap, the outer diameters of the holding cylinder 8 and the pressing head 12 are formed to have the same or substantially the same diameter. The inner peripheral surface of the peripheral wall 19 of the cover cap is removably face-fitted to the outer peripheral surfaces of the pressing head 12 and the retaining cylinder that are screw-held in the retaining cylinder 8, and the cover cap is A ridge 22 is provided around the inner wall of the peripheral wall 19 at a suitable position in the middle of the inner wall, and the ridge 22 is screwed to the holding cylinder 8 to hold it between the pressing head 12 and the outer periphery of the holding cylinder. It is characterized in that it is removably fitted into the gap of the above and further, a slight space is maintained between the upper surface of the top wall 14 of the pressing head 12 and the inner surface of the cover cap 21. .

[0011]

[Action]

 With the above configuration, the outer peripheral surface of the holding cylinder 8 and the outer peripheral surface of the push-down head 12 are surface-fitted to the inner peripheral surface of the peripheral wall 19 of the cover cap 21, and the pressing head held by the holding cylinder 8 is screwed. The protrusion 22 provided on the inner peripheral surface of the peripheral wall 19 of the cover cap 21 is fitted in the gap between the outer peripheral portions of the door 12 and its holding cylinder, and the upper surface of the top wall 14 of the pressing head 12 and the cover cap 21. The small space between them and the inner surface of them allows for a secure fit of those cover caps 21 that have been applied and is stable and free of looseness, rattling and tilting. I don't have it. Further, the cover cap 21 prevents the push-down head 12 from screwing with respect to the holding cylinder 8.

[0012]

【Example】

 FIG. 1 shows an embodiment using a synthetic resin molding member related to the liquid ejector of the present invention. In the illustrated example, a vertical reciprocating pump cylinder 4 having a required pump mechanism installed therein is attached to the mouth / neck portion 2 of the container body 1 at the upper end and is hung down into the container body. Mounts the outward flange 5 provided on the upper end of the cylinder 4 on the apex surface of the mouth / neck 2 via the packing 3 and mounts the mounting cylinder 6 on the outer periphery of the mouth / neck 2. It is screwed and held 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 arranged directly above the mounting cylinder 6. The holding cylinder has a screw tube 9 of an internal screw provided in the center portion thereof. 1 is fitted and fixed to the inner surface of the upper end portion of the screw pipe 1, and an engaging cylinder for fitting to the outer surface of the upper end portion of the cylinder 1 is vertically provided from a middle portion of the lower surface of the outward flange 10 provided at the upper end of the screw tube, and An outer peripheral wall 11 having a diameter slightly smaller than that of the mounting cylinder 6 is hung from the outer edge of the facing flange 10, and the lower end of the outer peripheral wall is brought into contact with the upper surface of the mounting cylinder 6. A push-down head 12 with a nozzle, which projects a nozzle 13 forward, is arranged on the holding cylinder 8, and the inner circumference of a small-diameter screw cylinder 23 of an external screw hanging down from the center of the lower surface of the push-down head is connected to the pump. It is configured to be mechanically fitted and connected to a mechanism, and the pump mechanism is operated by raising and lowering the pressing head to obtain the ejection of the liquid in the container body 1 from the nozzle 13 on the front surface of the pressing head. The outer screw of the small-diameter screw cylinder 23 is screwed and held by the screw tube 9 of the holding cylinder 8 at the lower limit of the downward movement of the pressing head 12. The pump mechanism fits and connects the outer circumference of the upper end of the discharge pipe 15, which is freely inserted into the upper part of the cylinder 4 so as to be able to move up and down, to the inner circumference of the lower end of the pressing head 12, thereby ensuring mechanical connection and liquid communication. Then, an annular piston 17 also serving as a discharge valve is attached to 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 is installed in the lower portion of the cylinder 4. At the same time, a suction valve 18 is provided below the suction valve 18, and a suction pipe is fitted vertically from the lower end of the cylinder 4, and the pumping function is exerted by pushing down the pushing head 12. Further, the push-down head 12 has the outer peripheral wall 24 formed to have the same outer diameter as that of the outer peripheral wall 11 of the holding cylinder 8 and is screwed and held in the holding cylinder at the lower limit of the outer peripheral wall. 24 The lower end is slightly separated from the holding cylinder to create a gap. A transparent cover cap 21 is detachably attached to the outside of the pressing head 12 or the holding cylinder 8, and a notch 20 for escaping the nozzle 13 is formed on the front face of the peripheral wall 19 in the cover cap. The inner peripheral surface of the peripheral wall 19 is removably surface-fitted to the outer peripheral surfaces of the push-down head 12 and the outer peripheral walls 24, 11 of the holding cylinder 8, and the ridge 22 is formed at an appropriate position in the middle portion of the inner peripheral surface of the peripheral wall 19. Are circumferentially provided, the protrusions are removably fitted into the gaps, and the lower end of the peripheral wall 19 is abutted against the upper surface of the mounting cylinder 6. Further, a slight space is provided between the upper surface of the top wall 14 of the push-down head 12 and the inner surface of the cover cap 21. In use, the cover cap 21 may be pulled off upward, but in this case, the peripheral wall 19 of the cover cap 21 is elastically deformed and the ridge 22 is disengaged from the gap.

[0013]

[Effect of device]

 According to the present invention, no engaging vertical protrusions or the like are provided between the holding cylinder 8 and the cover cap 21 to prevent the rotation of the holding cylinder 8 from each other. Even if the cover cap 21 is not fixed, the cover cap 21 can be fitted accurately and stably without floating or any other trouble. Of course, the container body 1, the mounting cylinder 6, the holding cylinder 8, the pressing head 12, the cover cap 21, etc. Each member does not have to have any other special shape, and can be made into a simple shape, and the mold cost does not increase even when molding synthetic resin, and the cost of the product can be kept low. Moreover, the inner peripheral surface of the peripheral wall 19 of the cover cap 21 is surface-fitted to the outer peripheral surfaces of the pressing head 12 and the holding cylinder 8 at the lower limit of the downward movement of the pressing head 12 screwed and held to the holding cylinder 8. At the same time, a ridge 22 provided around the middle portion of the inner peripheral surface of the cover cap peripheral wall 19 is fitted in the gap between the outer peripheral portions of the press head 12 and the holding cylinder 8. Since a small space is formed between the upper surface of the top wall 14 of the cover and the inner surface of the cover cap 21, the cover cap 21 is sufficiently fitted by the fitting operation in a large area and the locking action of the ridges 22, and As long as the cover cap 21 has a high height, it can be fitted and fitted accurately without causing problems such as floating with a dimensional allowance, and without causing large dimensional variations in fitting. Since the notch 20 does not become deep, the required mating retention force can be secured. Therefore, it can be securely fitted and held, and therefore, it can be stably mounted without any inconvenience such as rattling, rattling, and tilting, and accidental easy detachment due to external force can be eliminated. The cover cap 21 can prevent the push-down head 12 from being screwed with respect to the holding cylinder 8, and can properly prevent unnecessary operation and mischief of the push-down head during the product distribution process, thereby reducing the product value. It can be properly prevented and the purchaser's sense of security can be secured.

[Submission date] February 16, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

[0013]

[Effect of device]

 According to the present invention, since there is no engaging vertical ridge or the like provided between the holding cylinder 8 and the cover cap 21 to prevent the rotation from engaging with each other, the screwing direction between the pressing head and the holding cylinder is constant. Even if it is not, the cover cap 21 can be fitted accurately and stably without any other trouble such as floating, and of course, the container body 1, the mounting cylinder 6, the holding cylinder 8, the pressing head 12, the cover cap 21. Each member does not need to have any other special shape, and can be made into a simple shape, and the mold cost does not increase even when molding synthetic resin, and the cost of the product can be kept low. Moreover, the inner peripheral surface of the peripheral wall 19 of the cover cap 21 is surface-fitted to the outer peripheral surfaces of the pressing head 12 and the holding cylinder 8 at the lower limit of the downward movement of the pressing head 12 screwed and held to the holding cylinder 8. The cover cap 21 has a large area because the protrusion 22 provided around the middle portion of the inner peripheral surface of the cover cap peripheral wall 19 is fitted in the gap between the outer peripheral portions of the pressing head 12 and the holding cylinder 8. It can be held sufficiently by the fitting and the locking action of the projection 22, and the cover cap 21 does not become so tall that the notch 20 does not become deep. The force can be secured, the fitting and holding can be securely performed, and a slight space is formed between the upper surface of the top wall 14 of the pressing head 12 and the inner surface of the cover cap 21. For variations in dimensions Can such trouble even without can be engaged accurately be Kihama of I but was, shaking, rattling, without inconvenience be stably mounted such slope, it is possible to eliminate a simple off not meaning by an external force. The cover cap 21 can prevent the push-down head 12 from screwing with respect to the holding cylinder 8, and can properly prevent unnecessary operation and mischief of the push-down head during the product distribution process, which lowers the product value. Can be properly prevented and the purchaser's sense of security can be secured.

[Brief description of 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 ... Mouth / neck part 4 ... Cylinder 6 ... Mounting cylinder 8 ... Holding cylinder 11 ... Outer peripheral wall 12 ... Pressing head 13 ... Nozzle 19 ... Peripheral wall 20 ... Notch 21 ... Cover cap 22 ... Projection 23 ... Small diameter screw Cylinder 24 ... Outer wall

Claims (1)

[Scope of utility model registration request] 1. A vertical reciprocating pump, which is equipped with a mounting cylinder 6 for mounting the cylinder to a mouth / neck part 2 of a container body 1 at an upper end portion of a cylinder 4 in which a required pump mechanism is installed, and directly above the mounting cylinder. A holding cylinder 8 for a push-down head is arranged on the holding cylinder 8 and fixed to the upper end of the cylinder 4, and a push-down head 12 with a nozzle mechanically linked to the pump mechanism is provided on the holding cylinder 8 so as to be vertically movable. Then, the pump mechanism is actuated by raising and lowering the pressing head so that the liquid in the container body 1 is jetted from the nozzle 13 on the front surface of the pressing head, and the pressing head 12 is lowered. The holding cylinder 8 at the lowest limit
The cover cap 21 is detachably attached to the pressing head 12 or the holding cylinder 8 screwed and held by the holding cylinder 8 and the peripheral wall 19 of the cover cap. In the liquid ejector in which the notch 20 for escaping the nozzle 13 is formed on the front surface of the holding cylinder 8, the holding cylinder 8 and the pressing head 12 are formed to have the same or substantially the same outer diameter, and the holding cylinder 8 is screwed. The above pressing head held together
The peripheral wall of the cover cap on the outer peripheral surface of 12 and its holding cylinder
The inner peripheral surface of 19 is removably face-fitted, and a ridge 22 is provided around the inner wall of the peripheral wall 19 of the cover cap at a proper position in the middle portion thereof, and the ridge is screwed into the holding cylinder 8. The press-down head 12 held and the holding cylinder are detachably fitted into the gap between the outer peripheral portions of the press-down head 12, and the upper surface of the top wall 14 of the press-down head 12 and the top wall of the cover cap 21. A liquid ejector characterized by having a small space between it and the inner surface.