WO1996037308A1

WO1996037308A1 - Hand lever-operated pump

Info

Publication number: WO1996037308A1
Application number: PCT/EP1996/002196
Authority: WO
Inventors: Fritz Meckenstock
Original assignee: Frimec Fritz Meckenstock Gmbh + Co.
Priority date: 1995-05-23
Filing date: 1996-05-22
Publication date: 1996-11-28
Also published as: AU5999196A; DE29508519U1

Abstract

The invention concerns a hand lever-operated pump (1) for dispensing liquid or paste-like substances. It comprises a pump chamber (11) with an inlet valve (V1) and outlet valve (V2); a pump piston (9) which co-operates with a pump cylinder (10); a covering floor (21) for an extraction aperture of a supply vessel, a suction pipe (16) passing through the covering floor (21); and a receiving chamber (A) for a supply vessel neck (25). The hand lever (2) engages beneath the pump cylinder (10) with a lever arm (19) to actuate the pump against the force of a restoring spring (20). It is proposed as a structurally simple and functional solution that the covering floor (21) allocated to the pump cylinder (10) should be provided with a recess (V) aligned with the supply vessel neck; the lever arm (19) when not being operated should be at least partially inserted in the recess (V); and the recess (V) should be so formed as to ensure at least partial radial overlap with the receiving chamber (A).

Description

00001 Hand lever operated pump

00002

The invention relates to a hand lever operated pump

00004 for dispensing liquid or pasty media,

00005 with a pump chamber that has an inlet valve and a

00006 has outlet valve, further a pump piston, which with

00007 cooperates with a pump cylinder, with a cover plate

00008 for a removal opening of a storage vessel, wherein

00009 the cover plate is penetrated by a suction pipe,

00010 a receiving space for a storage vessel neck, and

00011 the hand lever against the action of a return

00012 spring the pump cylinder with a lever arm for Pumpbetä¬

00013 reaches under.

00014

Such a pump is from PCT application WO 92/03132

00016 known. The disclosure content of this application is

00017 in full in the disclosure of the present application

00018 included, also for the purpose of features

00019 of these documents in the claims of the present application

00020 dung to record.

00021

00022 object of the present invention is a gat¬

00023 tional pump with simple means structurally as well

Advantageously develop 00024 in the actuating function;

00025 spatial conditions in the area of

00026 removal opening of the storage vessel cheapest with einbe¬

00027 be drawn.

00028

This object is achieved by the angege¬ in claim 1

00030 bene invention.

00031

00032 claims that follow give advantageous further

00033 formations of the invention.

00034

ORIGINAL DOCUMENTS According to such a design is a structural and

00036 functionally advantageous pump realized. The

00037 advantage is essentially in the cheap accommodation

00038 the actuation mechanism of the pump is justified by

00039 in this regard also the underfloor area of the cover

00040 dens is involved. Specifically, it looks like that

00041 the cover, assigned to the pump cylinder, a

00042 has a recess aligned on the storage vessel side,

00043 that the lever arm at least in the unactuated state

00044 is partially retracted into the recess and that the

00045 depression in at least partial radial overlap

00046 to the receiving space is formed. Is won

00047 increased immersion depth for the actuator

00048 gung low and thus an enlarged stroke. Should he

00049 enlarged stroke can not be used, that can be in a

00050 reduced overall height of the pump can be "converted". On

00051 the constructive possibility is opened in any case,

00052 to vary the angle of the hand lever. Finally

00053 can be the free end under the pump cylinder

00054 of the lever arm larger and thus more stable

00055, for example in the sense of a larger material accumulation

00056 fung. The radial overlap mentioned can go so far

00057 go that practically the entire neck of the reservoir

00058 is used. It is also proposed that the cover

00059 floor is designed as a ceiling of a screw cap.

00060 The integral design opened here is reduced

00061 continues the number of parts. It is structurally advantageous

00062 this if the cover is a storage room side

00063 extending intake manifold guide forms. This too

00064 is located in the recording room, is protected and lends

00065 the cover in spite of realizable thin walls

00066 high internal stability due to the polydirectional

00067 lity of wall sections to each other. Due to the

00068 intake manifold guide are tilting of the intake manifold itself

00069 when the actuation attack of the 00070 lever arm of the hand lever practically excluded.

Moreover, the invention proposes that the

00072 intake manifold guide has a sealing step for

00073 menu effect with a counter-seal of the intake manifold

00074 or the intake manifold bracket. In order to be able to

00075 pump alignment with respect to the recess

00076 to be independent, it is proposed that the pot-like

00077 term recess is rotationally symmetrical.

Such a rotationally symmetrical configuration would

00079 can also be used if the recess is not immediately

00080 telbar would be realized on the screw cap, but

00081 on a in a matching receptacle of the housing

00082 brought the corresponding thread

00083 set. With a manually operated pump according to the

Handle on which the return spring continues as a bellows

00085 is formed, it is then proposed that the

00086 intake manifold bracket a radial recess for

Has 00087 latching with a bellows bottom. Thereby

00088 results in a fixation that is as simple as it is durable

00089 of the bellows bottom on the intake manifold. On the other hand, it turns out

00090 it is advantageous that a bellows cover under

00091 abuts against the depression as a counter bearing. The

00092 bellows cover is supported on a stable ring

00093 level. Finally, there is an advantageous one

Feature of the invention in that in the bellows cover

00095 a radially aligned air balancing

00096 nal is formed, which is in an axially oriented

00097 th connection duct in front of the jacket wall of the intake manifold

00098 continues. This gives a good one, even

00099 damped spring behavior. It finally turns out

00100 still as cheap that both the bellows bottom as

00101 also the bellows cover radially inwards the bellows

00102 th of the bellows protrudes. That favors one

00103 slim design of the pump. 00104 The object of the invention is explained in more detail below with reference to 00106 of an exemplary embodiment illustrated in the drawing. It shows: 00108 00109 Fig. 1 the pump according to the invention in vertical section, 00110 both in the unactuated basic position 00111 (solid line type) and in the actuation position 00112 (dash-dot line type), 00113 00114 Fig. 2 the pump in front view , 00115 00116 Fig. 3 the same in plan view and 00117 00118 Fig. 4 is an enlargement of the area of the 00120 bellows forming an air balancing 00119 soft / balancing channel. 00121 00122 The pump designated in its entirety with 1 can be actuated 00123 by means of a hand lever 2. 00124 00125 The double-armed hand lever 2 is pivotally seated 00126 mounted on an axis 3. The latter can be molded onto the hand lever 00127 in the same way and sits in a bearing seat 00128 4 of the pump housing 5. 00129 00130 The pump housing 5 consists of an upper part 6 and 00131 a lower part 7. These are connected to each other, preferably latched. The parting line between 00133 upper part 6 and lower part 7 is placed in such a way that the 00134 upper part 6 with a web 8 in a correctly mounted position. 00135 the bearing holder 4 closes from above, so that 00136 the axis 3 is held in an operational manner. 00137 00138 With regard to the guidance of the medium conveyed from a 00139 storage vessel (not shown), for example a bottle 00140 an angled route is implemented. That

00141 involved is a fixed, vertically oriented

00142 pump piston 9, which with a rectified,

00143 coaxial and overlapping pump cylinder 10

00144 cooperates, which its vertical actuation stroke

00145 through the hand lever 2.

00146

00147 The pump piston 9 is hollow throughout and centrally

00148 to a pump chamber 11 formed by the pump cylinder 10

00149 open. This from a longitudinal opening 12 of the

00150 pump piston 9 and the pump chamber 11 of the pump cylinder

00151 10 formed, proportionately in the upper part 6 and lower part 7

00152 lying vertical section of the angled line

00153 way is labeled I.

00154

00155 The adjoining corner above to a media output

00156 opening 13 leading horizontal section of the ab¬

00157 angled line path bears the reference symbol II.

00158

00159 With regard to the dispensing opening 13, it can be liquid

00160 according to the medium around a spray nozzle and paste-like

00161 Medium is a strand-forming spout. Darge¬

00162 is the first mentioned version.

00163

00164 The horizontal section II of the route can be made

00165 a in cross-section initially semi-ring-shaped and in

00166 end portion annular channel 14 exist.

00167

00168 The pump chamber 11 has an inlet valve V 1 and

00169 exhaust valve V2 on. The inlet valve is on the

00170 bottom 15 of the pump cylinder 10 arranged. To do this

00171 in individual reference to those already mentioned above

PCT application 00172 mentioned WO 95/03132. The same applies in

00173 reference to the specific design of the exhaust valve 00174 V2. This is implemented as a kind of hose valve, 00175 the former as a folding valve. 00176 00177 On the underside of the pump chamber bottom 15 a suction pipe 00178 16 goes out. The latter can be molded directly onto the pump cylinder 10 00179 or can be assigned by means of the plug connection 00180. In the illustrated embodiment, the latter version is preferred. 00182 For this purpose, an intake manifold holder 17 is formed integrally from the underside of the 00183 bottom 15. The tube cross-section 00184 is significantly smaller than the cross-section 00185 of the pump cylinder 10, so that a freira¬ 00186-extending, radially projecting ring shoulder 18 remains under this. 00187 This engages a lever arm 19 of the pivotally mounted 00188 hand lever 2, which effects the pump actuation. For this 00189 the pump lever 2 of the pump 1 is moved towards the riser pipe 16 00190, whereupon the pump cylinder 10 moves upwards 00191 and the pressure of the pump chamber 11 increases. The 00192 leads to the fact that the inlet valve VI strengthens its closure 00193, while the outlet valve V2 opens 00194 net and medium is output. 00195 00196 The hand lever 2 is actuated against the 00197 force of a return spring. The return spring is a 00198 bellows 20. Carrier of the same is proportionally the suction tube holder 00200 17 correspondingly extended downwards 00199. It passes centrally through a cover bottom 21 that closes a removal opening 00201 of the storage vessel directly or indirectly 00202. This is on the lower part 7 00203 the pump 1 is formed. It is penetrated by the suction pipe 16 or 00204 of the suction pipe holder 17 carrying it in the inside plug connection. 00206 00207 on the underside of the cover base 21 is the lower part to 00208 one overlapping the mouth area of the storage vessel. 00209 designed the cap 22. To this extent, the cover base 00210 is implemented as the cover of this cap 22. It is 00211 in one piece with the lower part 7. 00212 00213 An advantageous embodiment, however, also consists of 00214 in that the cover base 21 is immediately designed as the cover of a 00215 screw cap (not shown). 00216 00217 In the drawing, the 00218 corresponding screw thread 23 is located on an insert 24. 00219 which is inserted into the cap 22, which is itself free of 00220 here, with a clip connection. The screw thread 23 00221 interacts with a suitable counter thread on the jacket 00222 surface of the storage vessel neck 25, which enters the corresponding receiving space A formed by the cap 22 and the insert 242, respectively. 00225 00226 The cover plate 00227, which is assigned to the pump cylinder 10 below, has a 00228 depression V aligned on the storage vessel side. The latter can be molded onto the cover base 21 00229 itself; In the illustrated embodiment 00230, the depression V is physically realized on the insert 24 00231. It is based on the ceiling 00233 26 which is supported on the lower side of the cover base 21 of the cap 22. The depression V extends through corresponding 00234 wall deformation to approximately the middle cap height 00235 he. As a result, the cap space is also utilized and 00236 thus opens up the constructional possibility of varying the 00237 extension angle of the lever arm 19. 00238, a particularly effective lever attack can be provided on the 00239 ring shoulder 18, for example in the angular range 00240 from four to seven o'clock. On the other hand, on 00241 this way there is also the possibility of reducing the overall height of the pump with a cheaper 00242 lever arm length. 00243 A third constructive possibility arises from 00244 a thickened and thus more stable formation of the lower

00245 gripping end of the lever arm 19, which in the drawing

00246 representation in the form of a in the direction of the longitudinal

00247 central axis x-x of the pump unit going bend

00248 27 is realized, the hand lever 2 a total

00249 essentially Z-shaped course gives with arrangement

00250 of axis 3 approximately in the central region 28 of the Z web. The

00251 axis lies in a plane which is essentially the

00252 half the height of the spring-loaded basic position

00253 lie pump cylinder 10 corresponds. In this basic

00254 position are, for example.

00255 ten bends 27 in terms of touch on a plane

00256 of the longitudinal central axis x-x intersecting diametrals D-D

00257 (see Fig. 3). So it is a force

00258 cheapest distributed output force transmission before.

00259 Swiveling up the lever arm 19, the transverse

00260 rounded, force-introducing sections of the fork

00261 ends insignificantly in the direction of the periphery

00262 of the ring shoulder 18. To reach through the

00263 tending fork ends have both the cover

00264 21 and the upward section of the related

00265 chen lower part 7 a total of the bearing receiving side

00266 with 29 designated opening. This forms with

00267 a lower stop edge a limit stop

00268 30 for the hand lever 2, more precisely the one facing it

00269 narrow edge of lever arm 19. 00270

00271 The upper limit stop results from connection

00272 gen of the upper edge 31 of the pump cylinder 10 on one

00273 counter surface 32 of the upper part 6 of the pump 1. 00274

00275 The at least in partial radial overlap with the

00276 receiving space A formed recess V forms a

00277 top counter for the under tension

00278 bellow 20, so that one 00279 bellows 20 top 33 molded on the underside

00280 of the bottom wall 34 of the recess V is present. The sub

00281 side of the recess V thus forms a counter bearing of the

00282 other end via the intake manifold bracket 17 with the

00283 displaceable pump cylinder 10 connected bellows

00284 20. The connection of a floor there is realized

00285 35 by locking. To form the corresponding

00286 the latching has the outer surface of the tube

00287 intake manifold bracket 17 a radial recess 36 to

00288 latching a central hole edge of the Bo-

00289 dens 35. The recess 36 can be a continuous groove

00290 can be realized. 00291

00292 Bellows cover 33 and bellows base 35 run

00293 parallel to each other and are radially inward in such

00294 rather realized length that they clearly the inner

00295 folds 37 'of the bellows folds 37 of the bellows 20

00296 tower. The bellows base 35 is measured radially

00297 about twice the fold height, while the spring

00298 bellows cover is slightly below this dimension. Due to the

00299 Flexibility and elasticity of the bellows material

00300 hen no difficulties with the demolding.

00301 ceiling 33 and floor 35 are two to three times as thick

00302 like the fold wall. 00303

00304 the cover base 21 -if it forms the depression V-

00305 or the bottom wall 34 of the insert 24 - this forms

00306 here the depression V- is to form a

00307 suction pipe or suction pipe holder extending on the council side

00308 guidance used, designated 38th It

00309 is a pipe socket. He is the central

00310 le opening for the medium forming the bottom wall

00311 34 of the insert 24 molded on the same. The related

00312 funds available from home are also

00313 used by the intake manifold guide 38 a 00314 sealing step 39 forms, which also acts as a support 00315. The (39) interacts with a sealing counter stage 00316 40 of the intake manifold, or the intake manifold holder 17, 00317. Even with greater pretension, the 00318 return spring, ie the bellows 20, is not in the 00319 position to pull the intake manifold holder 17 out of its operationally appropriate 00320 position. Rather, in this way 00321 even such a stop limitation is achieved that it does not require 00322 that the free end of the hand lever 19 is exposed to the 00323 annular shoulder 18, ie the hand lever 2 as a whole, constant load. 00325 00326 However, a synchronous support 00327 can also be realized using the previously described limit 00328. 00329 00330 In order to be independent in relation to the angular assignment of 00331 pump 1 in relation to the vessel, the pot-shaped recess V is rotationally symmetrical. 00333 Alternatively, the desired orientation can also be achieved through 00334, a configuration as described in the patent application not previously published 00335. P 44 16 239 emerges. 00336 The content of their disclosure is included in full in the 00337 application at hand, also for the purpose of 00338 to include features of these documents in claims of the present application. 00340 00341 In order to favor the resilience of the bellows 20, this is given a device which enables the air to be exhaled and inhaled inside the bellows. The device corresponding to 00344 is that in the 00345 bellows cover 33 there is a radially aligned 00346 air compensation duct 41 on the upper side. Using 00347 the flat underside of the bottom wall 34 is overlaid by this channel 00348. Like the enlargement -Fig. 4- 00349 removable, the mentioned air equalization channel sits

00350 41 into an axially oriented connection channel 42,

00351 which lies in front of the jacket wall of the intake manifold guide 38

00352 and cooperating with this channel. Both ends

00353 of the angular channel thus generated are open, namely the

00354 connection channel 42 to the inside of the bellows and that

00355 free end of the air equalization channel 41 for receiving

00356 room A.

00357

00358 On the storage vessel neck 25, a similar one can be found on the end edge

00359 che precaution be taken by pumping

00360 removed medium replaced by the atmosphere.

00361

00362 The function is, briefly summarized, as follows:

00363

00364 By pulling on the hand lever 2, the lever arm 19

00365 pump cylinder 10 against the axially immovable itself

00366 arranged pump piston 9 relocated. That from one

00367 previous pumping gear in the pumping chamber 11

00368 medium dosed in this way is passed through the longitudinal breakthrough

00369 chung 12 and channel 14 and finally the output

00370 opening 13 deployed. This happens under passing

00371 of the exhaust valve V2, while the intake valve VI

00372 seals against the remaining supply in the vessel.

00373 The corresponding movement takes place against the force

00374 of the bellows 20 which, after releasing the hand lever 2

00375 causes the reset of the pump set in

00376 causes its home position. Here is under volume

00377 enlargement of the pumping chamber 11 the next batch of

00378 medium through the suction pipe 16 into the pump chamber 11

00379 sucks.

00380

00381 All disclosed features are essential to the invention.

00382 In the disclosure of the application, the

00383 disclosure content of the associated / attached priori 00384 fact documents (copy of the pre-registration)

00385 was included, also for the purpose of characteristics of this

00386 documents in claims of the present application with

00387 record. 00388

Claims

00389 CLAIMS

00390

00391 1. Hand lever operated pump (1) for dispensing liquid

00392 gene or pasty media, with a pump chamber

00393 (11), which is an inlet valve (VI) and an outlet valve

00394 (V2), further a pump piston (9), the with

00395 cooperates with a pump cylinder (10) with a cover

00396 bottom (21) for a removal opening of a Vorrats¬

00397 vessel, the cover base (21) of a suction pipe

00398 (16) is penetrated, a receiving space (A) for one

00399 storage vessel neck (25), and wherein the hand lever (2)

00400 pump cylinder (10) with a lever arm (19) for pump actuation

00401 against the action of a return spring under¬

00402 engages, characterized in that the cover plate

00403 (21), assigned to the pump cylinder (10), a supply

00404 has recess (V) aligned on the vessel side that

00405 the lever arm (19) in the unactuated state at least

00406 partially retracted into the recess (V) and that

00407 the recess (V) in at least partially radial

00408 overlap to the receiving space (A) is formed.

00409

00410 2. Hand lever operated pump according to claim 1 or insbe¬

00411 special afterwards, characterized in that the cover

00412 bottom (21) is designed as a ceiling of a screw cap.

00413

00414 3. Hand lever operated pump after one or more

00415 of the preceding claims or in particular according thereto,

00416 characterized in that the cover base (21) a

00417 intake pipe guide extending on the storage space side

00418 (38).

00419

00420 4. Hand lever operated pump after one or more

00421 of the preceding claims or in particular according thereto,

00422 characterized in that the suction pipe guide (38)

00423 has a sealing step (39) for interaction 00424 with a sealing counter stage (40) of the suction pipe (16) 00425 or the suction pipe holder (17). 00426 00427 5. Hand lever operated pump according to one or more 00428 of the preceding claims or in particular according to it, 00429 characterized in that the pot-like recess 00430 (V) is rotationally symmetrical. 00431 00432 6. Hand lever operated pump according to one or more 00433 of the preceding claims 1 to 5, or in particular 00434 thereafter, wherein the return spring is designed as a bellows (20) 00435, characterized in that the suction tube 00436 (17) has a radial recess (36) 00437 has a bellows base 00438 (35) for snap-in locking. 00439 00440 7. Hand lever operated pump according to one or more 00441 of the preceding claims or in particular according to it, 00442 characterized in that a bellows cover (33) 00443 on the underside of the depression (V) is an anvil bearing 00444. 00445 00446 8. Hand lever operated pump according to one or more 00447 of the preceding claims or in particular according to it, 00448 characterized in that in the bellows cover (33) 00449 on the upper side a radially aligned air compensation channel 00450 (41) is formed, which is in a axially oriented connection channel (42) continues in front of the jacket wall of the suction pipe 00452 (38). 00453 00454 9. Hand lever operated pump according to one or more 00455 of the preceding claims or in particular according to it, 00456 characterized in that both the bellows base 00457 (35) and the bellows cover (33) radially inside 00458 the bellows folds (37) of the bellows (20) protrudes.