TW559570B - Pressure accumulation type liquid ejector - Google Patents

Abstract

A pressure accumulation type liquid ejector comprises: a piston arranged inside a cylinder, a piston guide arranged through a path passing along the axial of the piston and by touching or separating from the piston to open or close the path and operating with the cylinder and the piston to form a space for sucking and pressurizing liquid, a check valve opening when the cylinder sucks the liquid through an inlet, and a hollow stem keeping the outer side of the piston liquid-sealed and slidably embedded to the outer side of the piston and engaged with the tip of the piston guide. By using the first resilient member, the piston guide is pressed to touch the piston to keep the path in a close state. By using the second resilient member, the piston is pressed to touch the piston guide to adjust the ejection pressure of the liquid. Before the container is ejected, the stopper arranged inside the cylinder positions the piston to increase the surface-contacting pressure between the piston and the piston guide to keep the path in a block state. A ring-shaped recess is formed along the outer circumferential of the tip of the piston on the tip contacting the stopper.

Description

559570 V. Description of the Invention (1) [Technical Field] The present invention relates to a pressure accumulating liquid ejector, and more particularly to a person who can effectively prevent liquid leakage in the ejector cylinder (c y 1 i n d e r). [Known technology] A sprayer that sprays liquids such as lotion, cologne (c ο 10 gram), or perfume in a fine spray method. At present, generally, a dispersion medium and a pressurized medium are filled into a container together. That is, most of them are aerosol type ejectors. Such an ejector has a high manufacturing cost, and even after the dispersing medium is completely used up, a lot of pressurized medium remains in the container. Therefore, when discarded, the container needs to be perforated to discharge the pressurized medium. Therefore, it takes time to dispose of the container, and the discharge of the pressurized medium into the atmosphere may pollute the environment. Therefore, in recent years, the pressure accumulator has been re-evaluated. It does not need to use pressurized media like in a liquefied gas type ejector, but presses the ejection head multiple times to increase the internal pressure, and The contents are sprayed at this pressure. Regarding the conventional technology in this regard, reference may be made to, for example, a pump spray of the type disclosed in U.S. Patent No. 5 6 8 9 96. This type of ejector includes a cylinder (cy 1 inder) having a suction port leading into the container and fixed to the mouth of the container, a piston (pist ο η) arranged in the cylinder, and contacting and away from each other by the piston The method is to open and close a piston guide for spraying the liquid path, a hollow stem that supports one end of the piston guide and connects the other end to the back of the piston through an elastic member, and has a nozzle and is connected thereto. Hollow handle and communicating with its internal pathway

10094pi f.ptd Page 7 559570 V. Description of the invention (2) The cap (cap) is used to eject the contents. Pressing the cap repeatedly and intermittently, the contents can be sucked, and the contents can be continuously ejected by pressurizing the drum. Here, both the piston and the piston guide are supported by elastic members (internal pressure adjustment springs and suction pressure springs) that are inserted from both sides. The elastic force of the elastic member is adjusted so that when the pressing cap is not pressed, the piston and the piston guide contact each other to occlude the liquid passage. In order to make the pressing force of the pressing cap cover smaller and to smoothly perform the pumping operation, the elastic force of one of the internal pressure adjustment spring and the suction pressure spring in the elastic member can be adjusted. However, in this case, since the contact pressure between the piston and the piston guide becomes low, a liquid leak occurs in the cylinder and it is difficult to effectively discharge the contents. Moreover, in the pressure-storage liquid ejector, the end portion of the piston is formed with a slightly flat cutout. For example, when the end portion is brought into contact with a drop surface provided in the cylinder, thereby limiting the cylinder When the internal displacement amount, the root of the drop surface will deform or damage the end of the piston. As a result, airtightness in the cylinder is lowered and air is drawn in, and a large oil seal may not be effective. In order to solve the above-mentioned problems, an object of the present invention is to provide a pressure-storage type liquid ejector capable of ejecting liquid without leaking liquid inside the cylinder. [Summary of the Invention] The problem to be solved by the present invention is to eliminate the above-mentioned problems, and to propose a new accumulator-type liquid ejector that can eject liquid without generating a liquid leak inside the cylinder.

10094pi f.ptd Page 8 559570 V. Description of the invention (3) In order to solve this problem, the pressure accumulating liquid ejector of the present invention includes: a cylinder, a hollow handle, a piston, a blocking portion, a discharge valve And a suction valve. The cylinder has a suction port, which opens into a container containing a liquid to be ejected, and is installed at a mouth portion of the container. A hollow handle can be fitted with a cap for a user to press to eject liquid from the container. The piston system is mounted to the hollow shank, and slides in the cylinder according to one of the pushing force from the hollow shank and one of the resisting pushing forces from an elastic member, so as to form a space area in the cylinder. The blocking part is connected to one end of the piston to limit the displacement when the piston is in operation. The discharge valve uses a push-in action of one of the pistons to communicate a space region and an internal passage of a hollow handle to discharge liquid from the space region to the outside. The suction valve uses the returning action of one of the pistons to communicate the space area and the suction port of the cylinder to suck the liquid into the space area. Among them, an annular recess is formed on an end portion of the piston in contact with the blocking portion along an outer peripheral edge of the end portion. According to the above structure, when the piston disposed in the cylinder is caused to slide by the pressing force from the hollow handle and the elastic force from the elastic member, the space area formed between the piston and the cylinder is increased or decreased to draw and discharge. In the case of liquid, the amount of displacement of the piston in the cylinder is limited by its contact with a stopper formed by a drop surface of the piston provided in the cylinder. At this time, an annular recessed portion formed along the outer peripheral edge of the piston is used. The end portion of the piston does not contact the vicinity of the root of the blocking portion, but contacts the blocking portion. Therefore, even if the vicinity of the root portion of the blocking portion is a shape that easily damages or deforms the piston end portion, since the piston end portion does not contact the vicinity of the root portion of the blocking portion, but contacts the blocking portion, a reliable sealing performance can be obtained. , So no cylinder

10094pif.ptd Page 9 559570 V. Description of the Invention (4) The contents leaked out due to liquid leakage. In addition, the above-mentioned pressure-storage liquid ejector may further include a cover member that covers the opening of the cylinder disposed at the position opposite to the suction port in a state where the hollow handle is partially exposed, and may The method of pushing in and returning the exposed part supports the hollow handle, and uses the cover member to integrate the parts as a module. In this case, the main mechanism of the pressure-storage type liquid ejector is modularized, and various types of containers can be mounted. That is, in addition to the effects obtained by the aforementioned accumulator-type liquid ejector, it is possible to respond immediately to changes in various product methods. The invention further provides a pressure-storage liquid ejector, which includes: a cylinder, a piston, a piston guide, a check valve, a hollow handle, a first elastic member, a second elastic member, and a blocking portion. . The cylinder has a suction inlet opening into a container, and is mounted to a mouth of the container through a base member. The piston system is arranged in the cylinder, has a passage, and penetrates along the axis of the cylinder. The piston guide is arranged through the passage of the piston, contacts and separates the passage of the piston to open and close the passage, and moves with the cylinder and the piston to form a space region that sucks and pressurizes a liquid. The check valve opens only when it draws liquid to the suction port of the cylinder. The hollow shank maintains a liquid-tight state on the outside of the piston, and is slidably fitted to the outside of the piston, and is connected to one end of the piston guide. The first elastic member presses down the piston guide to contact the piston to maintain the path of the piston closed. The second elastic member presses the piston into contact with the piston guide to adjust the ejection pressure of a content. The blocking part is arranged in the cylinder. Before the content is ejected, the piston is positioned to improve the

10094pif.ptd Page 10 559570 5. Description of the invention (5) The contact surface pressure between the piston and one of the piston guides maintains the closed state of the passage. With the above-mentioned structure, the contents can be ejected in the cylinder without leaking the fluid with extremely small operation force. In addition, the number of parts can be reduced, thereby simplifying the assembly process and reducing the cost. In particular, all components are made of resin. When disposing of the ejector, each material does not need to be collected separately. In the above-mentioned accumulator type liquid ejector, the first elastic member may be disposed between the piston guide portion and a bottom wall portion of one of the space regions. And in the aforementioned pressure-storage liquid ejector, the second elastic member may further include a pressing cap with a nozzle, which cooperates with a protruding end of the hollow handle to eject the liquid through an internal space of the hollow handle to The outside, and the second elastic member is disposed between the pressing cap and the base member. Furthermore, the blocking portion may be a spring member which is integrally formed on the base member and contacts a rear end portion of a piston before the contents are ejected. Furthermore, it is desirable that the above-mentioned pressure accumulating liquid ejector includes a blocking portion. In the cylinder, when the piston is pushed in, it comes into contact with one end portion of the piston to limit the displacement amount, and is in contact with the blocking portion. An end portion of the piston is formed with an annular recessed portion along an outer peripheral edge of the end portion. In this case, the annular recessed portion formed along the outer peripheral edge of the piston prevents the end portion of the piston from coming into contact with the vicinity of the root portion of the blocking portion, but contacts the blocking portion. Therefore, even if the vicinity of the root of the stopper is a shape that easily damages or deforms the end of the piston, the end of the piston does not touch the vicinity of the stopper's root, but contacts the stopper. Therefore, the contents can be ejected without fluid leakage inside the cylinder. In addition, in the pressure accumulating liquid ejector of the present invention, it may further include a

10094pif.ptd Page 11 559570 5. Description of the invention (6) The cover member covers the opening of the cylinder arranged opposite to the suction port with a part of the hollow handle exposed, and can be pushed in and returned to the exposed portion. The share method supports a hollow handle, and the components are integrated as a module by using a cover member. Especially for a module like this, it is desirable to further include a blocking portion. In the cylinder, when the piston is pushed in, it is in contact with one end of the piston to limit its displacement, and the piston is in contact with the blocking portion. An end portion is formed with an annular recessed portion along an outer peripheral edge of the end portion. With the above-mentioned structure, the main mechanism of the pressure-storage type liquid ejector is modularized, and various types of containers can be mounted. That is, in addition to the effects obtained by the aforementioned accumulator-type liquid ejector, it is possible to respond immediately to changes in various product methods. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings for detailed description as follows: [Simplified description of drawing numbers] 1 , 2, 3, 4, 5, 6, 7: Accumulator type liquid ejector 10: Container 11: Container mouth 13: Pressing the cap 1 3c: Cap cover 14: Suction tube 2 0: Piston 2 3: End of the piston

10094pif.ptd Page 12 559570 V. Description of the invention (7) 2 3 f: contact surface 100, 2 0 0, 3 0 0, 4 0 0, 5 0 0: module 1 1 0, 2 1 0: cylinder 1 1 0 f: inner wall surface 111: suction port 1 1 1 f: seat 112: rib 1 1 2 f: upper surface of rib 1 1 3, 2 1 3: drop surface in cylinder 113a: near root of drop surface 1 1 4, 2 1 4: Opening part of the cylinder 115 > 215: Groove part of the outer periphery of the cylinder 1 2 0, 2 2 0: Piston 121: Base part 122: Internal passage of the piston 1 2 2 f: One of the inner walls of the internal passage Parts 1 2 3, 2 2 3: Piston front ends 123a, 223a: Recesses 1 2 3 f 1: Sliding surface 1 2 3 f 2. · Contact surface 1 2 4, 2 2 4: Rear end portion 1 3 0, 2 3 0: Piston guide 13 1: One end of piston guide 132: The other end of piston guide

10094pif.ptd Page 13 559570 V. Description of the invention (8) 133: The outer peripheral part of the piston guide 1 40, 2 4 0: Check valve (suction valve) 141: Ball 1 5 0, 2 5 0: Hollow handle 151, 153: Internal passage 1 5 1 f: Part of the internal passage of the hollow shank 152: Ribs 1 5 4, 2 5 4: Flange 160 > 2 6 0 > 3 6 0: Spring (No. 1 elastic member) 1 7 0, 2 7 0, 3 7 0: spring (second elastic member) 1 8 0, 2 8 0: cover member 1 8 0 f, 2 8 0 f: inner side surface 1 8 1, 2 8 1: Upper part of cover member 1 8 2, 2 8 2: Through hole 182f ^ 282f ^ 183 ^ 283: Inner wall 184: Flange 1 90, 2 9 0: Base 191: Base member 1 92: Base 2 10a: suction port 2 2 0 a: internal passage 2 2 0 b: end face of the piston 2 2 4: rear part of the piston 2 2 4 a: annular recess

10094pif.ptd Page 14 559570 2 3 2: The end of the piston guide V. Description of the invention (9) 2 5 0 a: Internal space 2 5 0 b: Inside of the hollow handle E s: Nozzle FI: Thrust of the hollow handle F2: Elastic force of spring P: Gasket R: Barrel chamber S: Blocking section [Preferred embodiment] Hereinafter, the pressure accumulating liquid ejector of the present invention will be described in detail with reference to the drawings. Fig. 1 is a sectional view showing a first embodiment of a pressure-accumulating liquid ejector according to the present invention. FIG. 2 is a partial cross-sectional view of a module (m o du u 1 e) applied to the pressure-storage liquid ejector 1 of FIG. 1. In FIG. 1, reference numeral 10 is a container filled with contents, reference numeral 11 is a mouth portion of the container 10, and reference numeral 100 is a module shown in FIG. 2. Module 1 0 0 is shown in Figure 2. It consists of cylinder 1 1 0, piston 1 2 0, piston guide 1 3 0, check valve 1 4 0, hollow handle 1 50, and spring of the first elastic member. It is composed of nine parts including 160, a second elastic member 170, a cover member 180, and a packing P. The cylinder 1 1 0 has a plurality of ribs 1 1 2 having a seat 1 1 1 f and a ball 1 1 1 which seat the sphere 1 4 1 near the suction port Π 1 and uses these ribs 1. 1 2 above 1 1 2 f spring 1 6 0 holding one of the piston guides 1 3 0

10094pif.ptd Page 15 559570 V. Description of the invention (10) :: ί The other end 132 of the cymbal 130 is integrally mounted on a plurality of ribs 152 formed in the hollow crevice / gan channel 151. These two ribs 152 are formed between the piston guide 130 and the piston-shaped guide 130 to form a% -shaped internal passage 153 connected to the internal passage 151. The piston 120 series forms a space region between the cylinder 120 and the cylinder 11 (the tube qiu qiu, sf has treated its base 1 2 1 to slidably support a portion 151f of the internal piping passage 151 provided in the hollow handle 150. The piston 120 has a + internal passage 122 of the pass through 130. A part of the inner wall of this internal passage 122 ^ 22f is connected to the flange portion of the hollow handle 丨 5 4 The spring 1 7 0 'removably contacts the outer peripheral portion of the piston guide portion 1 3 0 3/3, and thereby the' piston 1 2 0 is generated by using the thrust f 1 from the hollow handle 1 50 Said pushing action, and using the spring force F 2 obtained through the piston guide 130 to generate a restoring action. So through the front end portion 1 2 3 and the rear end portion 124 of the piston 1 20, it can move along the cylinder 11 The inner wall surface ll0f slides. Therefore, the piston 120 and the piston guide 130 are pushed into the hollow shaft i 5 by pushing in and out of the cylinder chamber R, so that the cylinder chamber R passes from the internal path 2 2 Open to the outside through the internal passages 1 5 3 and 1 51. The sphere 1 4 1 pulls back the piston 丨 2 0 to depress the cylinder chamber R and resist its own weight and stay away from suction. The seat 1 1 1 f near the mouth is opened a, that is, the cylinder chamber r. That is, the piston 12 and the piston guide 130 are discharge valves, which cooperate to operate the pushing of the hollow handle 5 and borrow The piston 1 2 0 is pushed in to discharge the liquid in the open cylinder chamber r to the outside. The seat 1 1 1 f, the rib 1 2 and the ball 1 4 1 are suction valves 1 4 0, which are used The elastic force of the spring 160 causes the liquid to be sucked into the open chamber r by the push-back action of the piston 120.

l0094pif.ptd page 16 559570 5 Description of the invention (11) The gasket P is fitted with an under cut to a groove portion 1 1 5 provided outside the cylinder 11o. In addition, the cover member 810 is provided on the upper section 8i. Hollow handle 1 5 0 through hole 1 8 2. Inside it, there is an opening portion 1 1 4 which shares a common rear steam ^ 1 1 0 and an inner wall 1 8 3 with an inner side surface 1 8 0 f. Therefore, the cover hibiscus 180 is located at the position in contact with the gasket p, and is in a state of sealing the opening part 1 1 4 of the cylinder γ member, and the flange 丨 5 * = of the hollow handle The way in which the inner wall 1 8 2 f of the through hole 1 2 is in contact with each other restricts the movement of the shell, and it exposes a part of the hollow handle 1 50 ^ ^ 1 1 0 opening i 4 so that the hollow handle i 5 〇 can be pushed in and pushed back, whereby the cover member 180 supports the hollow handle 5 0 in this way. 100, the accumulator type liquid ejector 1 adopts the right meat / component of the module. The exposed hollow handle 15 is a spray type, which is installed at the end of the cap.) The pressing cap 13 of Es is made of metal. The screw: 俨 3? ”0 is installed on the mouth 11 of the container 10. And the decorative cover 13c is installed on the top of the towel. Therefore, the convex gold edge is made of the part ^ 4 The system is integrally formed on the outer peripheral portion of the cover member 180. The upper part of 1 80 is attached to the 8 threaded cap 盍 1 90 series, as shown in FIG. Tighten afterwards so that the pressure storage type is not needed: cover structure lock Ί i: = ϋ: 部 11. In this case, it is useful to reduce the cost of the contact agent or the connecting element. Here, the operation of the pressure-storage liquid ejector 丨 will be described with reference to the module 100. When the cap 13 is pressed by the hand, as shown in FIG. 2, with an arrow? 1

559570, description of the invention (12), the hollow handle 150 is pushed in the direction. With the pushing operation of the hollow handle 150, the cylinder 1 is pushed inward against the elastic force of the spring 160 to press the cylinder chamber r. At this time, because the pressure in the cylinder chamber R rises, the piston 120 and the movable portion 130 seat the ball 141 on the seat portion ^ as they are, and they are separated from each other by the elastic force of the 60 and the spring 170. The flow system in the cylinder chamber R ^ The internal passage 122 of the piston is discharged through the internal passages 153 and 151 of the hollow handle and the nozzle E s of the cap 盍 13 to the outside, and then the piston is blocked again by the spring force 1 2 0 and piston guide 丨 30. After that, release the pressing cap 13 to release the pressing operation on the hollow handle 150, and the elastic force of the spring 160 'passes through the piston guide 30, and then the piston 12 is pressed to generate a negative pressure to the chamber R. Therefore, the sphere 141 closes the gap between the living body 120 and the piston guide 130 as it is, and leaves the seat n against its own weight. At the same time, it sucks fluid from the outside through the suction port 1 1 1 and introduces it into the cylinder chamber R. Thereafter, when the hollow handle 150 is repeatedly pushed into the hollow handle 150 by pressing the cap 13, in order to increase or decrease the pressure of the fluid filled in the cylinder chamber R, it is opened and closed alternately with a piston 120 and a piston guide 130. The discharge valve and the suction valve 1 4 0 with a sphere 4 i draw liquid from the outside. This liquid system is discharged from the nozzle E s of the pressing cap 13 through the internal passage 1 5 1 of the hollow tube 5 1. In the pressure accumulating liquid ejector 1 and its module 100, the piston 120's pressing operation system 'uses the front end portion 123 of the piston 120 to contact the differential surface 1 1 3 provided in the% cylinder to limit it. _ Figures 3 A and 3 B are partial sectional views of the piston 120 and enlarged sectional views of the front end 1 2 3 of the bean, respectively. Figure 4 shows a part of the conventional piston 2 0 ^

Page 18 559570 V. Description of the invention (13) A sectional view. The 5A and 5B diagrams are enlarged sectional views respectively showing the state in which the front end 1 2 3 of the piston 1 2 0 contacts the drop surface 1 1 3 provided in the steam red 1 1 0. As shown in Figs. 3A and 3B, the piston 1 2 0 has a concave portion 1 2 3 a formed in an annular drop shape on the outer peripheral end edge of the front end portion 1 2 3 below it. The end portion 1 2 3 of the living base 1 2 0 is divided into a sliding surface 1 2 3 f 1 on a cylinder inner wall surface 1 10 f and a contact surface 1 2 3 f 2 that contacts a drop surface 1 1 3. The module 100 and the pressure accumulating liquid ejector 1 using the module 100 are arranged in the cylinder 1 1 using the force F 1 pushed in from the hollow handle i 50 and the elastic force of the spring 16 60. The inner piston 1 2 0 slides. When the pressure formed in the cylinder chamber r between the cylinder 丨 〇 and the piston 120 is used to increase or decrease the pressure to draw and discharge the liquid, the piston 1 2 〇 push-in operation system in the cylinder 1 10 uses this piston 1 The front end 1 2 3 contacts the drop surface 1 1 3 provided in the cylinder 1 10 to limit. At this time, as shown in FIG. 5A, the front end portion 1 2 3 of the piston 1 2 0 is provided in the cylinder 1 1 0 without using a ring-shaped concave portion 1 2 3 a provided along the outer peripheral end edge thereof. 1 1 3 a near the root of the drop surface 1 1 3 and contacts the drop surface 1 1 3. Conversely, in the case of the conventional piston 2 0, the end portion 2 3 is made into a slightly flat contact surface 2 3 f ', as shown in FIG. 5B, and is in contact with the vicinity of the root portion 1 of the drop surface 1 1 3. 1 3 a, due to the shape of 3 a near the root, the end 23 of the piston 20 may be deformed or damaged, thereby reducing the sealing performance. Therefore, the module 100 and the pressure accumulating liquid ejector 1 using this module 丨 〇〇, even if the n3a is located near the root of the drop surface 113 in the cylinder 110, it is easy to be before the piston 1 2 0 The end face 1 2 3 has a damaged or deformed shape, because the end portion 1 2 3 before the piston 120 will not contact the vicinity of the root 丨 3 a, but will contact the drop surface 1 1 3 provided in the steam rainbow 1 1 〇, A reliable sealing effect is obtained, so

10094pif.ptd Page 19 559570 V. Description of the invention (14) There can be no liquid leakage from the cylinder to eject the contents. In particular, the module 100 is a module in which the pressure-storage liquid ejector 1 is modularized, and various types of components can be mounted. Therefore, if the effect obtained by the pressure accumulating liquid ejector 1 is added to the module 100, it is possible to respond to a variety of different product method changes immediately. The shape of the annular recessed portion 1 2 3 a is not limited to the aforementioned annular drop-shaped recessed portion, and may be a shape formed by connecting the sliding surface 1 2 3 f 1 and the contact surface 1 2 3 f 2 with straight lines and curves. Composition of the recess. Fig. 6 is a sectional view showing a second embodiment of the pressure accumulating hydraulic liquid ejector of the present invention using the module 100. In addition, the same reference numerals are used for the same parts in Figs. 1 to 5, and descriptions thereof are omitted. The pressure-storage liquid ejector 2 shown in FIG. 6 is a spray type as in FIG. 1. Although it is through the base member 191 to be attached to the mouth portion 1 1 of the container 10, The head cover 1 3 c is detachably mounted on the base 1 9 1. Since the pressure-storage liquid ejector 2 also integrally forms a flange portion 1 8 4 on the outer peripheral portion of the cover member 180, the base member 1 9 1 can be fitted to the cover member 1 8 only by using the lead angle of the base member 1 9 1 0 flange 1 8 4 to mount it to the mouth portion 1 1 of the container 10. In this case, since a contact agent or a connecting element connected to the cover member 180 is not required, it contributes to cost reduction. The accumulator-type liquid ejector according to the aspect of the present invention can also be directly assembled to the mouth portion 1 1 of the container 10 without using the module 100 shown in FIG. 2. Fig. 7 is a sectional view showing a third embodiment of the pressure accumulating liquid ejector of the present invention. The same parts as those in Figs. 1 to 6 are denoted by the same reference numerals, and a description thereof will be omitted. The accumulator type liquid ejector 3 shown in FIG. 7 passes through the base 192 to

10094pif.ptd Page 20 559570 V. Description of the invention (15) Install the cylinder 1 10 on the mouth 11 of the container 10. In this case, the front end portion 1 2 3 a of the piston 1 2 has an annular recessed portion 1 2 3 a formed along the outer peripheral edge of the front portion 1 2 3. Therefore, even if it is provided in the cylinder 1 1 0 The drop surface 1 1 3 near the root 1 1 3 a is a shape that easily damages or deforms the front end 1 2 3 of the piston 1 2 0 because the front end 1 2 3 of the piston 1 2 0 does not touch the vicinity of the root 1 1 3 a, but will contact the drop surface 1 1 3 provided in the cylinder 1 10, so that the effect of positive sealing can be obtained, so the contents can be ejected without leaking from the cylinder. In addition, for the accumulator type liquid ejector Bu 3 and the module 100, when the piston 1 2 0 is pushed in, the front end portion 1 2 3 of the piston 1 2 0 is in contact with the drop surface 1 1 3 of the cylinder 1 1 0 In order to limit the amount of displacement, although the annular recessed portion 1 2 3 a is formed only at the front end 1 2 3 of the piston 1 2 0, it is limited to having a blocking portion to contact the end portion 1 2 4 after the piston 1 2 0 In the case of the amount of displacement, an annular recessed portion along the outer peripheral end edge of the rear end portion 1 2 4 may be formed in the end portion 1 2 4 after the piston 120. Regarding the pressure-storage liquid ejectors 1 to 3 and the module 100 shown in Figs. 1 to 7, when the contents are ejected, the pressing cap 13 or the hollow handle 1 50 is smaller in order to achieve a smaller content. Loaded and can be ejected with a smooth barrel motion, although it is effective to reduce the elasticity of either of the two springs 160, 170, but in this case, it will cause contact between the piston 120 and the piston guide 130. A low pressure causes a liquid leak in the cylinder 110, and it may be difficult to effectively eject the contents. Here, with reference to the following drawings, a new accumulator type liquid ejector is disclosed, which does not generate a liquid leak inside the cylinder and can smoothly eject liquid even with a small load.

10094pi f.ptd page 21 559570 V. Description of the invention (16) Figure 8 shows a sectional view of the structure of the pressure accumulating liquid ejector of the present invention. In the pressure-storage liquid ejector 4 of FIG. 8, 枳 ζ 歹 1J is a container filled with * contents, and reference numeral 11 is a mouth portion of the container 10. The bottom ^ 0 and reference numeral 210 are ^ cylinders installed at the mouth of the container 10 through the base member 290. Σ 1 is formed on the bottom wall portion of the cylinder 2 to absorb the content through the suction pipe 14. Also, for example, the 29 ° series has an opening ′ that opens into the container 10 and is screwed to the mouth. The Zhuang member has a-and station ′ mark * s22A〇 is a piston disposed in the cylinder 210. The piston 2 2 0 has an internal passage 2 2 a of the shaft center. The internal It route (Si) is the Ϊf guide. This piston guide is 2 3 0 series and penetrates into the piston 220. It is installed to guide the opening and closing of the internal passage ma. 2 2 0 —Same movement to form the jade area (Π is the tube chamber) R that sucks and presses the first version.

Reference numeral 240 is a handle that can be used only when the suction port 210a of the check valve 2ΐΛ2 opened by the steam 71 X is sucking the contents. The hollow shank 250 is maintained in a liquid-tight state and moves monthly to the outside of the piston 22o, and the ends 2 3 2 are connected (connected). Only the piston V 4230, number 13 is a protruding end fitted to the hollow handle 25 ΐ ϊ XL; XL ?: I; ^ 2 5 0 ^ " 2 5 0 a 4 / The fluid from Congsi is ejected to the outside. & No. 2 6 0 is the first elastic member, the first bullet ^ > ^ 2 2 0 ^ ^ 2 ^ 0 / Λ; I Λ Π212η2 = the passage 22〇a is maintained in a closed state, the second elastic member 270 For example

559570 V. Description of the invention (17) --------- The words are arranged between the cylinder 2 2 0 and the Chinese and foreign 23 0 to press the piston 2 2 0 wide ± shank 25 () to each other, so that the piston Guide pressure). At R, adjust the ejection pressure of the contents (inside, the number S is integrally formed as a stack of inner rings. The blocking part is used as the rear of the base 2 9 0 to the piston 2 2 0 The end portion 2 and 24 are attached to the cylinder 210 with the support portion 8 and positioned in contact. Further, before the piston of the piston 22o ejects the contents, the piston 2 2o drop surface 213 is used as a blocking portion, and the movement system is entered into Limit the drop surface 2 1 3 provided in the cylinder 21 0 to this. 'The front end 2 2 3 of the piston 2 2 is in contact with the passage 2 2 0 of the piston 2 2 0a ^ The member 2 7 0 is mutually Use the first elastic member 2 6 0 and the second spring-closed state to guide the contents of the piston 2 2 0 and the piston guide 2 3 0 to maintain the spring force of the 2 7 0.丨 It is sprayed in a member, and the second elastic structure will damage the passage 2 2 0a. The piston guide 2 3 0 has a small pressing force and leaks. The tightness of L will have internal moisture. In this embodiment, when # 2 2 4 is used for positioning, even if f becomes in contact with the piston 2 2 0, the worm member 2 60 is redundant with the elastic member 2 of the piston 22, and the first bomb The sealed state of the channel 2 2 0 a = can be kept constant, so it will not damage the slippery part in the example: the contents are sprayed out. It is a separate structure, and it is formed on the base ^ 2 to 9 'It can also be 213. In the same way, the body is opened f without any, = ... the first elastic member 2 6 0, the second elastic member 2 and 2 0. Spring, but as long as the required green member 2 7 can be secured 0 is suitable for spiral elasticity, and is not limited to its shape.

1〇_P] f.ptd P.23 559570 ------- — _______ ____- 1. Description of the invention (18)-'Yu, the metal can also be applied to the load as shown in Figure 9 On the top of the cap 3, stopper 2 2 0, and then pull the top to remove the load. The second bow is early, and the member 2 6 0 is Huai Yuan Qi, Φ φ is known; c: λ /. 〇 rw is not suitable for materials, although resin is also suitable, in order not to affect the quality of plastic content, metal can also be used. Said the restoring force of the first member 260 of the Ibori, the hollow handle 2 50 and the piston 2 2 0 return [4 ^ ^ " 'At this time', the space region R is decompressed to suck through the suction tube / 1 口 2 a makes the contents of the container 丨 0 flow into the area R. Press in the middle of the cup * and press it further until the top and bottom of the cap 1 3 are pressed against the 2 valve 240Η. When the 2nd dagger is plugged, as shown in Figure 10, the suction port 210a and the hollow handle 25◦ Two G ί The pressure in the high space region R, and the end surface 2 2 0 b of the piston 22202: Open the t, g hollow 99 handle / 50 of the inner end 2 5 0 b, hit the piston = pass through the hollow Handle 25: two: air ^ under the influence of its: pressure inside the mouth E s and spray to the outside. . The formation of the spray from the pressing cap 丨 3 by Yuri a ^ The pressing of the pressing cap 13 by the dead body repeatedly can connect the green. The pressurized medium that can be ejected ... is indispensable: in the structural example disclosed in Fig. 8, it is the first elastic member and the second elastic member; it is made of synthetic resin. On the V " u map-the components 360, 3, 0, thus reducing J ::, hollow ㈣. Sectional view of the single. A sixth embodiment of this pressure-storage type liquid nozzle ejector. The end 2 2 3 before the piston 2 2 0 = a change in the figure.

559570 5. Description of the invention (19) The annular recesses 2 2 3 a and 2 2 4 a formed at the outer peripheral edge. In this case, the displacement amount of the piston 2 2 0 in the cylinder 2 10 uses the front end 2 2 3 of the piston 2 2 to contact the drop surface 213 provided in the piston 21 0, and the piston 2 2 0 The end portion 2 2 4 comes into contact with the blocking portion S formed integrally with the base member 290 to restrict it. At this time, the front end 2 2 3 and the rear end 2 2 4 of the piston 2 2 0 will not respectively touch the drop surface 2 1 3 or the vicinity of the root of the blocking section S, but will touch the drop surface 2 1 respectively. 3 or blocking section S. Therefore, even if the drop surface 2 1 3 or the vicinity of the root of the blocking portion S is a shape that is likely to damage or deform the front end 2 2 3 or the rear end 2 2 4 of the piston 2 2 0, the front end of the piston 2 2 0 The portion 2 2 3 or the rear end portion 2 2 4 does not touch the root of the drop surface 2 1 3 or the broadcast blocking portion s, but contacts the drop surface 2 1 3 or the blocking portion S, so it can be confirmed It's tightness and can spray out the contents without leakage in the cylinder. Fig. 13 is a sectional view showing the structure of a seventh embodiment of the pressure accumulating liquid ejector of the present invention. This pressure accumulating liquid ejector 7 is an example in which the sixth embodiment shown in FIG. 12 is applied to the fifth embodiment shown in FIG. 11. The end portion 2 2 3 and the rear end portion 2 2 are before the piston 2 2 0. 4 has a concave portion 2 2 3a, 2 2 4a 'formed along the outer peripheral edge thereof, except that the first and second elastic members have the same structure, and are the same as the sixth embodiment. The pressure-storage liquid ejectors 4 to 7 of the present invention are each configured as a module, and can be configured as modules shown in Figs. 14 to 17 from 200 to 50. ',,,

559570 5. Description of the invention (20) The upper portion 281 has a through hole 282 through the hollow shank 250, and the inner surface has an opening 2 1 4 and the inner surface 2 8 0 f of the cylinder 2 1 — fitted together The inner wall 2 8 3 〇 Therefore, the 'cover member 2 8 0 is located in contact with the gasket p, and the opening 2 1 4 of the cylinder 2 10 is sealed, and the hollow handle 2 5 0 is convex The edge 2 5 4 contacts the inner wall 2 8 2 f of the through hole 2 8 2 to restrict the movement of the hollow handle 250 of the elastic force of the bombarded structure 270 (370), and exposes the hollow handle 6 5 〇 In the state of serving, the hollow handle 250 covering the opening 214 of the cylinder 2 can be pushed in and released. η In the embodiment shown in FIGS. 14 to 17, since the flange portion 1 84 is also integrally formed to the outer peripheral portion of the cover member 180, a base as shown in FIG. 6 can be used. The components 190, 191, etc. are mounted on the mouth 丨 丨 of the container 丨 〇. Moreover, the module shown in FIGS. 14 to 17 also has a falling surface 213 in the cylinder 210, and an inner ring 2 is formed on the inner wall 2 8 3 as an inner ring serving as a cover member 28. . Therefore, the ring-shaped recessed portion formed on the piston 22o can also be shown as 224a, 4a. The accumulator liquid ejectors 6, 7 and their modules 400, 500 are preferably formed on the piston 2 2 0. The front end portion 2 2 3 and the rear end portion are only provided on either of the front end portion 2 23 or the rear end portion 2 2 4 of the piston 2 2. The above is merely to disclose a preferred embodiment of the present invention, Practitioners should σ: add various changes to the scope of patent applications. For example, for the accumulator 2, the f ejector 3 is a spray type that does not use a tip nozzle, but can directly discharge a fluid with a high viscosity such as Yoshihisa. In addition, the pressure-storage type liquid ejection can also be performed by the user through cotton (cotto) or puff f (puf f).

Page 26 559570 V. Description of the invention (21) The tray-shaped nozzle head attached to the piston is used to take out the contents of cleaning liquid and the like. In addition, although each member constituting the ejector is also manufactured by an injection molding method, the present invention is not limited to the molding method. As synthetic resins, polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) can be used in addition to polyethylene, polypropylene, nylon, and ABS. ), Polyoxymethylene (POM), etc.

10094pi f.ptd Page 27 559570 Brief description of the drawings The first figure shows a sectional view of the first embodiment of the pressure accumulating liquid ejector of the present invention; the second figure shows the ejection corresponding to the first figure Partial cross-sectional view of the module of the device; Figures 3 A and 3 B are partial side sectional views of the pistons of Figures 1 and 2 and enlarged sectional views of the ends, respectively; Figure 4 Partial side sectional views of conventional pistons are shown; Sections 5 A and 5 B are enlarged sectional views and the fourth section showing the contact state of the piston end portion of FIGS. 1 to 3 and the drop surface provided in the cylinder, respectively. FIG. 6 is an enlarged cross-sectional view of a conventional technology in which a piston end contacts a drop surface provided in a cylinder; FIG. 6 illustrates a second implementation of the pressure accumulating liquid ejector using the module of FIG. 1 of the present invention. Example sectional view; FIG. 7 is a sectional view showing a third embodiment of the pressure accumulating liquid ejector of the present invention; FIG. 8 is a fourth embodiment showing a pressure accumulating liquid ejector of the present invention Fig. 9 is a sectional view showing the state of the ejector ejected in Fig. 8; Fig. 10 is a diagram illustrating the spray essentials of the ejector in Fig. 8; Fig. 11 is an illustration A sectional view of the structure of the fifth embodiment of the pressure-storage liquid ejector of the present invention; FIG. 12 shows a sectional view of the structure of the sixth embodiment of the pressure-storage liquid ejector of the present invention; 3 is a sectional view showing a structure of a seventh embodiment of the pressure-storage liquid ejector of the present invention;

10094pif.ptd Page 28 559570 Brief description of the drawings Figures 1 to 4 show partial cross-sectional views of the ejector module corresponding to Figure 8; Figures 15 to 15 show the ejection corresponding to Figure 11 Sectional view of the module of the device; Figure 16 shows a partial sectional view of the module corresponding to the ejector of Figure 12; and Figure 17 shows the ejection of the module corresponding to Figure 13 Sectional view of the module.

10094pif.ptd Page 29

Claims (1)

559570 6. Application patent scope 1. A pressure accumulating liquid ejector, comprising: a cylinder having a suction port, which opens into a container for containing a liquid to be ejected, and the cylinder is installed at one port of the container A hollow handle can be installed with a cap for a user to press to eject the liquid from the container; a piston is installed to the hollow handle and pressed in accordance with one from the hollow handle An input force and an elastic force coming from an elastic member against the pressing force slide in the cylinder to form a space area in the cylinder; a blocking portion contacts an end portion of the piston when the piston moves to restrict Its displacement amount; a discharge valve using one of the pistons to push in to communicate the space region and an internal passage of the hollow handle to discharge the liquid from the space region to the outside; and a suction valve using the piston One of the restoring actions communicates the space area and the suction port of the cylinder, and sucks the liquid into the space area, wherein the piston of the piston which is in contact with the blocking portion The portion other than the end portion along the peripheral edge portion is formed with an annular recess. 2. The pressure-storage liquid ejector according to item 1 of the scope of the patent application, further comprising a cover member that covers the portion of the hollow handle disposed at a position opposite to the suction port in a state in which the hollow handle is partially exposed. The opening of the cylinder supports the hollow handle in such a manner that the exposed portion can be pushed in and returned, and the parts are integrated as a module by using the cover member. 3. —A kind of accumulating liquid ejector, including ... 10094pi f.ptd Page 30 559570 6. Scope of patent application: A cylinder with a suction port leading into a container. The cylinder is installed to a mouth of the container through a base member; a piston is arranged in the cylinder. Inside the cylinder, there is a passage that passes through the axis of the cylinder; a piston guide is arranged through the passage of the piston, and the passage is opened and closed by contacting and separating the passage of the piston with each other, and The cylinder and the piston move together to form a space area that sighs and pressurizes a liquid; a check valve opens only when the liquid is drawn to the suction port of the cylinder; a hollow handle maintains the outside of the piston In a liquid-tight state and slidably fitted to the outside of the piston and connected to one end of the piston guide; a first elastic member that holds down the piston guide to contact the piston to maintain the passage of the piston as A closed state; a second elastic member that presses the piston into contact with the piston guide to adjust the ejection pressure of a content; and a drag portion disposed in the cylinder to spray the content Before the positioning of the piston, one of the piston and to increase the contact pressure of the piston guide portion, while maintaining the closed state of the passage. 4. The pressure-storage liquid ejector according to item 3 of the scope of patent application, wherein the first elastic member is disposed between the piston guide and a bottom wall portion of the space region. 5. The pressure-storage liquid ejector according to item 3 of the scope of patent application, wherein the second elastic member further includes a pressing cap, which has a nozzle and 10094pif.ptd Page 31 559570 6. The scope of the patent application is a protruding end of the hollow handle to spray the liquid to the outside through an internal space of the hollow handle, and the second elastic member is arranged on the pressing cap. The cover and the base member are between each other. 6. The pressure-storage liquid ejector according to item 3 of the scope of patent application, wherein the blocking portion is a spring member which is integrally formed on the base member and contacts the content before the content is ejected. One of the rear ends of the piston. 7. The pressure accumulating liquid ejector according to item 3 of the scope of patent application, further comprising a blocking portion, in the cylinder, when the piston is pushed in, it is in contact with one end of the piston to restrict the piston A displacement amount, and an annular recessed portion along the outer peripheral edge of the end portion is formed on the end portion of the piston contacting the blocking portion. 8. The pressure-storage liquid ejector according to item 3 of the scope of patent application, further comprising a cover member covering the cylinder disposed opposite to the suction port in a state where the hollow handle is partially exposed. The opening part supports the hollow handle in such a manner that the exposed part can be pushed in and returned, and the cover members are used to integrate the components as a module. 9. The accumulator-type liquid ejector according to item 8 of the scope of patent application, further comprising a blocking portion, in the cylinder, when the piston is in a push-in action, it is in contact with one end of the piston to restrict the piston A displacement amount, and an annular recessed portion along the outer peripheral edge of the end portion is formed on the end portion of the piston that is in contact with the blocking portion. 10094pif.ptd Page 32