TW442428B - Fluid pump dispenser - Google Patents

Abstract

A fluid pump dispenser has a pump body including pump a cylinder defining a pump chamber with a valve controlled product inlet passage leading to the chamber, a manually reciprocable pump plunger having a hollow stem defining a discharge passage leading from the chamber, a pump piston mounted on the inner end of the stem for relative sliding movement, the body having a plunger return spring for biasing the plunger into a raised position, the piston being limited for relative sliding movement between discharge open and closed positions, the piston having an annular projection defining a discharge valve seated in an annular groove of a plug element fixedly mounted to the stem at its inner end. A lost-motion effect is created between the piston and the stem which closes the discharge valve during the pressure stroke and opens the discharge during the intake stroke. The plunger is capable of being locked in up and down positions, an outer surface of the plug element sealing the inlet passage close in the plunger lock-down position.

Description

ήΛρΑ ^ 88105583 V. Description of the invention (1) 3_a Correction [Background of the invention] The present invention is related to-fluid pump distributor, # has a poly body with a pump cylinder boundary, and-valve control inlet channel to the pump chamber . The pump base of the manual pump has a vent channel valve located on the hollow shaft to control the pump nozzle to the outer end of the hollow shaft. The pump piston is connected to the inner end of the hollow shaft. The two can move relative to each other. The body has a plug. Return the spring to return the plunger to the raised position. The fluid pump dispenser is the same as the aforementioned type. Even though there are some high-tech distribution systems that achieve improved results, there are always expensive disadvantages. If you want to reduce costs, you will lose the advantages of high technology. According to U.S. Patent No. 5,615,806, a plunger is locked and distributed. The operation is to manually lower the plunger / nozzle to lower the hollow plunger shaft, and the pump piston is pressurized to the pump chamber formed by the pump cylinder. In the fluid. The piston return spring is located between the piston in the pump chamber and the throat of the pump body, and a ball valve or inlet check valve is formed in the throat. The β piston has a limited sliding in the hollow shaft, and the piston does not cover the drain during the compression stroke. 'And allow fluid to be released under pressure via the vent and nozzle. The amount 'not taken from the pump chamber by the full stroke of the piston' is proportional to the stroke length of the live pressure. Under the influence of the spring, the piston returns to its raised position, the pump chamber expands and the pressure drops, so that the fluid connected to the dispenser can enter the pump chamber by opening the inlet valve.

All of Mr.'s manual pump dispensers start by extracting air from the pump chamber with the extract. The method is to use a compression plunger. However, as previously invented, the compressible air in the pump chamber often causes the hollow shaft and the piston to move synchronously, so that the air in the pump chamber cannot be discharged from the drain port until the end of the descending stroke. The bottom of the piston is in contact with each other to exhaust air from the vent port. Leaked in reply stroke

No. 4424 2 8 ___ Case No. 88105583_Year Month Day _____ Fifth, the description of the invention (2). The discharge port is closed, and the output is flooded into the expansion spring chamber through the inlet check valve. · The dispensers described above are mainly designed to dispense soap liquids, or homogeneous viscous fluids'. Due to the imperfect design in the f-sealed area, there are many examples of failed attempts to reconcile low viscosity fluids. It is also difficult to dispense highly viscous or variable (vicinity) viscous fluids. As mentioned above, dispensers that are not suitable for each fluid have recently been widely used. [Summary of the Invention] Generally speaking, the present invention can overcome some disadvantages. In the dispenser according to the present invention, a plug is fixed to the inner end of the piston shaft. The piston is connected to the inner end of the hollow shaft and can slide relatively. The piston has a protruding ring connected to the ring groove of the plug to form a relief valve. When the hollow shaft and the piston slide against each other during their compression stroke, the ring opening opens so that the fluid flows below it. The plug communicates with the inside of the hollow shaft to form a relief channel. Therefore, it is easy to distribute highly viscous fluids without the need for different sizes. The vent port.

The pump dispenser according to the present invention also provides an upper position lock and a lower position lock of the plunger. In the latter case, the ring seal on the plug fits the tapered inner diameter of the bottom of the pump chamber to ensure that it does not leak during shipping, storage or other non-use processes. Other parts, functions and novel features of the present invention will be described in detail in the detailed description and the drawings. '' [Illustration of the drawing] The circle 1 is a vertical cross-sectional view of the fluid pump dispenser of the present invention, and the drawing shows the position of the plunger fully raised and locked; In the lower locked position; Figure 3 is a detailed enlarged sectional view of the piston of the hollow pump; 'Figure 4 is a vertical sectional view of the plug fixed to the lower end of the hollow piston;

^ d2 ά 2 8 _Case No. 88105553_Year Month and Day ___ V. Description of the Invention (3) · Figure 5 is the cross section of the cutting line 5-5 of Figure 4; Figure 6 is the 6 of Figure 5-6 Sectional view of 6 cutting line; Figure 7 is a side view of the plunger taking part; Figure 8 is an enlarged side view of the internal gasket, which is fixed to the pump body as shown in the sectional views of Figures 1 and 2; Figure 9 is Figure 8 is a vertical sectional view of the gasket; Figure 10 is a physical side view of the gasket of the present invention; Figure 11 is a top view of the gasket of Figure 10; Figure 12 is a perspective view of the gasket of Figure 10; 1 1 The cross section of the cutting line 1 3-1 3 is taken. [Illustration of drawing number] 2 Pump body 4 Pump chamber 6 Inner surface 7 Inner flange 8 Bottom wall 10 Cover 11 Annular constriction 12 Pump plunger 13 Plunger return spring 14 Inner pad 15 Axial groove 16 Abutment shoulder 17 raised rib «V 18 lower ring groove part 19 nozzle 20 ear 22 hollow shaft 24 inner end 25 inner shoulder 26 hollow piston 28 protruding ring 29 inner shoulder 30 cylindrical surface 32 plunger element 34 outer plane 35 dip tube 36 opposite side

C: \ Logo-5 \ Five Continents \ PF1043a, 'ptc Page 8 2000.11. 16. 008 4424 2 8 ___Case No. 88105553__Year 5. Description of the invention (4) 37 ring seal 38 spring foot 39 soil return valve 40 reverse buckle 42 ring gap 44 ring groove 50 gap 54 card beads 56 card beads 58 load 60 card beads [Details] Correction

Referring to FIG. 1 and FIG. 2, the fluid pump dispenser of the present invention, the sentencer 3-the pump body 2, has a pump cylinder defining a pump chamber 4; the pump chamber 4 has an inner surface 6 and a bottom wall 8. The pump body is attached to a customary lid to secure the dispenser to a container of product to be delivered (not shown). The inside of the chestnut chamber is shrunk at a position of 9 'and an annular tapered surface 11 is formed around the bottom wall 8. Its function will be described in detail below. This dispenser has a hollow shaft 22 connected to the manual reciprocating pump plunger 12, and the conventional nozzle 19 is placed on the upper end of the hollow shaft. The plunger return spring 13 is located in the pump chamber 4 and is wrapped around the periphery of the hollow shaft. 'The two ends of the spring are located between the ribs 17 on the inner edge of the plunger skirt and the inner flange 7 of the inner pad 14' so that it is fixed in the pump body. The flange 14 'of the pump body (as shown in Figs. 8 and 9) covers the flange 2 || on the outside of the pump body. The plunger return spring 13 is a 'dry' spring, because it is located outside the chestnut chamber 4, so it will not be wetted by the fluid during fluid distribution. This can prevent the plunger return spring 13 and the fluid product from interfering with it. Any compatibility problems and obstacles to product flow. In each reciprocating motion, the plunger return spring j 3 functions to return the plunger to its lowest position (see Figure 2) in the normal manner. Fully raised position (such as 圊 一).

442428

Jiusuobu ’or inner pad 14A is shown in Figures 10 to 10, and its fixed connection is all; ^ Daxian, such as a ^ ^ $ μ, pump body. The inner pad has a pair of axially opposed cao, an upper groove part 16 and a lower ring groove part] 8. Ring groove-hit shoulder 16 '' The lower ring groove portion 18 is also provided with a rag shoulder 18 ^ bearing surface column lane 1 2 can rotate the plunger skirt 1 with its axis as the circle center 2 with a pair of radial The extended symmetrical ears 20 (Fig. 7) are provided with a gap 50 between each 20, which is drawn as shown in Fig. 7-the ear 20, and the other ear is located on the other side of the plunger skirt. When the Tian plunger is fully raised, it can be manually rotated to slide the ear 20 over the ring groove portion 16 until the symmetrical ear 20 is aligned with the axial groove 15. The ear 20 can slide under the guidance of the pair of relative axial grooves 15 and the plunger can be pressed down. When operating in a general manner, the plunger can be rotated to keep the ear stuck on the shoulder. Can stop at the upper lock position. In addition, the plunger is rotated to align the ears with the grooves, and the plunger is pushed down to rotate the plug, so that the ears are disengaged from the recesses 15 and engaged under the shoulders 181. Thus, the plunger will be fixed in the lower lock position, where The contact lock plunger of the ear and the shoulder 18 'is in the lower lock position (see Fig. 2). The hollow shaft 22 on the plunger has an inner end 24 (see Fig. 4). Inside the shaft: the end face is retracted to form an inner shoulder 25 and an outer shoulder 2 5 ', and the hollow piston 2 6 (see Fig. 3 for details). It surrounds the inner end surface of the shaft, and forms an inner shoulder 2 9 ′ (such as circles 1 and 2) relative to the outer shoulder 25 of the shaft. This hollow piston can be axially slid on the shaft to the delivery release position (see Figure 2). ) And the delivery closed position (see Figure 1), and the upper limit of the piston is formed by abutting the shoulder 25 '. The piston has a protruding ring 28 and a cylindrical surface 30. The plunger element 3 2 is fixed to the inner end surface of the shaft, and has an outer plane 34 facing the pump chamber end edge 8 and another opposite side 36 »a skirt ring seal 37 is formed on the outer plane

C: \ Logo * 5 \ Five Contincnts \ PF1043a, ptc page ίο 2000. II. 16.010 4424 88105583 jf: _n means correction 4424 88105583 jf: _n means correction seal 37 and position (if effective anti-tail buckle has a plug rotation Meeting with plus. Moreover, the ears can be placed in a state of cross. Figure 9) Ear 20 Shoulder 1 6

5. Description of the invention (6). 34 'and extending radially and downwardly. When the plunger is fully lowered, the tapered surface 11 of the inner edge 6 of the fruit chamber 4 is tightly engaged, this is the lower locking position (Figure 2). Therefore, during transportation, storage, or other non-use periods, the fluid can be prevented from overflowing into the pump chamber 4 by the ball check valve 39, which is not sealed. The plunger element 32 is engaged with the inner shoulder portion 25 'by a pair of inverted buckles 40 on the opposite elastic legs 38, so that the plunger element is fixed to its tail end. As shown in Figs. 9 and 13 to 13, each of the opposite axial grooves 15 is axially extended to form a bead 56, which is arranged inside the center. Therefore, when the column aligns the opposing ears with the grooves of the groove 15, each pair of opposing ears 20 long card beads 56 abut 'also means that the plunger is in an unlocked delivery state. Rotating the plunger in the same direction from this position promotes The first elongated bead 5 6 of each opposing ear extends into the gap 50 to ensure that the plunger is open. When the 'extended bead 56 extends the gap 50 during this rotation, the operation feels a slight click.' It indicates that the plunger is not locked at this time. Another similar situation is that a bead part 6 0 is formed in the pad 1 4 (such as abutting with the shoulder 1 6. Therefore, the plunger leaves the Korean groove when rotating in the raised position. 15 'Make one foot of each pair of ears 20 over the catch' The ears of each pair of 20 catch before the part of the bead 60. As the operation force continues to rotate, the ear will stop over the bead 60 and stop. Notch 50. In addition, the operator can hear the mutual sound of the ears / cards 60 to confirm that the plunger is locked above. To indicate that the plunger has been locked below a predetermined level, a symmetrical wall is lined (defined on the opposite side) The shoulders 16 'and 18,) are provided with a consistent mouth' which defines A bottom groove portion 18. The bead 54 is combined with each symmetrical shoulder 18 to form an elastic arm 12. The function of the bead 54 is as in the bead 60—I side C: \ Logo-5 \ Five Corninents \ PF1043a .ptc

Page 11 2000. Π. 16. On 4424 2 8 ____ 索 号 88105583 _ 年月 B Correction __ V. Description of the invention (7). The plunger rotates to make the bead snap into the gap 5 〇 'The operator can also feel And hear this action to confirm that the plunger is fixed in the lower lock position. In addition, just as the liner 14 corresponds to the elongated bead 56, the liner 14A also has a pair of elongated bead 60, the upper shoulder ι6, and the lower shoulder 18, which are symmetrical to the center of the circle. In the molding process, the embossing of the 'card beads 60' constitutes the bottom groove μ to form a middle stop 58. During operation, the plunger is fully raised and unlocked, and the ears are rotated 20 ° to align with the symmetrical axial groove 15. The plunger head is manually depressed in a conventional manner, and it is reciprocated in the pump chamber to draw pressure. With one stroke of the plunger, the piston will shift upward relative to the hollow axis to the limit of the two adjacent stop portions 25, 29. See the positions in Figures 1-2. The piston and the inner surface 6 of the pump cylinder are closely fitted to provide a frictional force. 'Move the lowered hollow shaft to touch the lowered piston to form an idling state. The convex ring 28 of the piston is located on the plug and placed in the ring groove 44. The convex ring 28 forms a release valve. The plug edge 3 6 forms a ring gap 4 2 and communicates with the inside of the hollow shaft, so that the hollow shaft forms a relief channel in one of the spaces between the spring feet 38 (see Fig. 6). Therefore, when the piston and the hollow shaft are idling on each return stroke Since the protruding ring 28 and the ring groove 44 are closely closed to close the release valve, the extracted material is sucked from the suction pipe 35 in a conventional manner through the check valve and enters the pump chamber. There is a slight frictional drag force between the piston and the pump body, which eliminates the movement of the hollow shaft in the axial direction toward the piston in the axial direction. Manually rotating the plunger releases the ear 20 from the groove 15 and straddles the shoulder 16 '. Lock the plunger in the raised position with a click. In addition, the ear plug can be rotated to release the ear from the groove 15 to the shoulder 18 ', and at this time, the plunger is locked at the fully lowered position of the click sound. Current dispensers may be non-porous designs, such as U.S. Patent No.

C: \ Logo-5 \ FiveContinents \ PFUH3a.ptc Page 12 2000 H 012 1 4424M 88105583 _B. Amendment V. Description of Invention (8)-No. 5, 6 1 5, 8 0 6 Distributor, providing nothing Hole control container to prevent leakage. To this end, the extract is loaded in a foldable bag or a housing where possible, or as known dispensers provide a container with a driven piston, which acts internally to gradually reduce the contents of the container. The dispenser according to the present invention can be used for different sticky substances, such as creams, cosmetics, lipsticks, mechanical soaps, high-viscosity glues, fluid gloves, ointments, and the like. This dispenser is also suitable for the delivery of hydrogen peroxide, mercromina, and other substances that are usually lack of liquefaction and are released by titration. These substances contain protein and are used for drug distribution in tubes. This gives full play to the characteristics of ^ 无 孔 〃. Obviously, the present invention can also be modified or modified from the above description of the present invention. Therefore, the scope of patent claims of the present invention should be included in the scope beyond the above embodiments. 1

C: \ L〇a〇-5 \ Five Continenls \ PF1043a.ptc Page 13 2000, 11. 16.013

Claims (1)

C: \ Logo-5 \ Five Cont inents \ PF1043a.ptc Page 15 2000. 11. 16. 015 2 442 4 H 88105583__Year Month Day—Amendment_ VI. Patent application ear, an inner pad is fixed on In the pump body, the inner wall of the pad has two upper and lower grooves laterally to form a shoulder. At least one axial groove in the pad is located in the upper and lower grooves to receive the ears of reciprocating movement. The shoulder is in the upper locked position, and the shoulder engaged with the lower groove is in the lower locked position. 7. According to the fluid pump dispenser described in item 6 of the scope of the patent application, the aforementioned ear contains a radially outward notch. The aforementioned gasket has a first axial bead to engage with the aforementioned axial groove, and a second The axial bead is engaged with the upper groove shoulder. The aforementioned notch and ear teeth are engaged with the first bead to break the retaining plug and reciprocate on the track. When the notch and boundary teeth are engaged with the second bead, it can ensure that The plunger is fixed in the upper lock position. 8. In the fluid pump dispenser according to item 6 of the scope of the patent application, the lower groove has an elastic protrusion that fits with the notch and ear teeth to ensure that the plunger is fixed to the lower position. Lock position. VII. According to item 7 of the scope of the patent application, the second axial card bead in the L body fruit dispenser is adjacent to the shoulder gap of the lower groove and the ear and the second card locking position. The lower bead is engaged to ensure that the plunger is fixed to 2QO〇 ^ ll.l6. Qi6