Hand pump, especially for use with a foaming substance

Abstract

Hand pump (1; 1'), comprising an elastically deformable pump body (2) which is designed to exert a pumping action by means of elastic deformation, a gripping surface (3) for manually operating the pump body (2), a receiving chamber (4) for receiving a fluid to be conveyed, and a fluid inlet (5; 5') and a fluid outlet (6; 6') which are fluidly connected to the receiving chamber (4), wherein the fluid inlet (5) has a filling opening (7; 7') which is designed to be closed by a user's hand or at least a finger of the hand.

Description

[0001] The present disclosure relates to a hand pump, for example for use with a foamable substance.

[0002] Hand pumps are pumps that are operated manually to convey a medium. Hand pumps are often designed to allow the medium to be pumped over a certain distance by manually generating a corresponding flow. In practice, a variety of hand pumps are used for different applications.

[0003] In the course of continuous development, there is a need to develop a novel concept for a hand pump.

[0004] In this regard, a hand pump is proposed, comprising an elastically deformable pump body which is configured to exert a pumping action through elastic deformation, and in particular comprising a gripping surface for actuating the pump body. Furthermore, the hand pump has a receiving space for receiving a fluid to be pumped, as well as a fluid inlet and a fluid outlet which are fluidly connected to the receiving space. The proposed hand pump promotes simple production, as a technically complex pump mechanism can be omitted. In the proposed hand pump, the elastically deformable pump body is provided for this purpose, which can be actuated or is to be actuated by the gripping surface. The pumping action can be achieved by simply squeezing the pump body. In this respect, the proposed hand pump also offers advantages for a user with regard to handling.

[0005] To achieve a pumping action through elastic deformation, the pump body comprises, for example, or consists of, an elastic material. The elastic material can be a rubber-elastic material. The elastic material can also comprise or consist of at least one component from the group of thermoplastic polymers. For example, the elastic material comprises or consists of polyvinyl chloride (PVC), in particular soft PVC. For example, the elastic material comprises or consists of polyvinyl chloride (PVC), in particular soft PVC.

[0006] The elastic material can also comprise or consist of at least one component from the group of thermoplastic elastomers (TPE). For example, the elastic material comprises or consists of a polyurethane-based thermoplastic elastomer (TPU). In principle, the elastic material can also comprise or consist of silicone. Practical tests have shown that achieving the desired properties of the pump body is facilitated with the aforementioned elastic material.

[0007] For example, the elastically deformable pump body is designed to exert a pumping action by manual compression, in particular by manual compression via the gripping surface. For this purpose, the pump body can be designed as a squeeze body or in the manner of a squeeze body.

[0008] In one embodiment of the proposed hand pump, the fluid inlet and the fluid outlet are spatially separated from each other, in particular arranged at a distance from each other. This facilitates easy handling, since the fluid inlet can be used independently of the fluid outlet, for example, to fill the hand pump with the fluid to be pumped.

[0009] Alternatively, the fluid inlet and the fluid outlet can be located close together, in particular, assigned to the same side of the hand pump. In this case, the fluid inlet and the fluid outlet can be assigned to a common opening, in particular, use or have a common opening. This facilitates cost-effective and / or simple production of the hand pump, since only a single opening is required for the fluid inlet and the fluid outlet.

[0010] To facilitate filling the hand pump, a filling opening is provided. For example, the filling opening is assigned to the fluid inlet or the fluid inlet has the filling opening. In particular, the filling opening is designed to be closed by a user's hand or at least one finger of the hand. This facilitates closing of the filling opening, since the user can only use the hand or at least one finger of the hand for this purpose. A separate lid or other closing mechanism can be omitted. Closing the filling opening is necessary in order to promote a pumping action directed towards the fluid outlet through elastic deformation of the pump body.

[0011] The proposed hand pump can be designed such that the gripping surface is arranged on the pump body, in particular designed, for example, shaped, and preferably extends far enough in the direction of the filling opening that the filling opening can be reached with a finger of a user's hand grasping the gripping surface. This makes it possible to hold the hand pump in one hand and to close the filling opening with this hand or at least one finger of this hand. After the filling opening has been closed, the hand pump can then also be operated with this hand. All of this facilitates the handling of the hand pump.

[0012] The proposed hand pump can further be designed such that the filling opening and the fluid outlet are located on different sides of the hand pump. For example, the filling opening and the fluid outlet are located on opposite sides. This facilitates filling the hand pump in an operating position in which, for example, the fluid outlet is facing downwards.

[0013] If the fluid inlet and fluid outlet are assigned to a common opening, it is intended, for example, that the filler opening has or forms the common opening. This gives the filler opening a multiple function. On the one hand, the filler opening serves to fill the receiving space with fluid. On the other hand, the filler opening is used to spray out the fluid received in the receiving space.

[0014] The proposed hand pump can further be designed such that the filling opening is formed on a surface portion that is recessed toward the filling opening. This facilitates fluid-tight closure of the filling opening, for example, by a finger, since the recess in the surface portion creates a contour that approximates or is adapted to the contour of the fingertip.

[0015] The measure whereby the surface section is recessed toward and around the filling opening, after a design, also aims in this direction. This also facilitates the simple production of the recessed surface section.

[0016] It is advisable for the surface section to be made of or comprised of a dimensionally stable material. This creates a defined surface that remains essentially unchanged even when a finger is pressed against it. This promotes a sealing effect when the finger is pressed against it. Such a dimensionally stable material can be a hard plastic, such as polycarbonate (PC) or an acrylonitrile butadiene styrene polymer (ABS).

[0017] It's also advisable for the filling opening to be round, especially circular. This provides a convenient shape for sealing with a finger or fingertip.

[0018] The measure that, according to one embodiment, the filling opening has an opening diameter which is between 5 mm and 15 mm, in particular between 7 mm and 13 mm, in particular between 9 mm and 11 mm, preferably approximately 10 mm, also aims in this direction.

[0019] The proposed hand pump, for example, features a fluid section that runs around the filling opening and extends outward in a funnel shape. This makes filling the hand pump with fluid easier, as the fluid section can be used as a filling aid.

[0020] It is advisable for the material section to comprise or consist of a flexible material. This can achieve further handling advantages. For example, the material section can be configured to exert a suction cup effect on a preferably smooth reference surface. The material section can also be configured, for example, to be folded from the outward-facing extension, which can be used as a filling aid, into a rearward-facing extension. In the rearward-facing extension, the filling opening is exposed and thus easier to reach by the hand or at least one finger of the user.

[0021] In a further embodiment, the proposed hand pump comprises an end wall that extends transversely to the center axis of the hand pump in the region of a longitudinal end, with the filling opening arranged off-center relative to the center axis. It has been shown that the filling opening is easier to reach and close with a finger, such as the thumb of a hand, if the filling opening is arranged off-center.

[0022] In a further embodiment, the proposed hand pump comprises a preferably rib-shaped projection, which is particularly designed to be used as a scraper. This allows small pieces of soap to be scraped off a soap bar when the soap bar is moved along the projection. The soap bars can then be introduced into the receiving space via the filling opening and foamed up with a liquid, for example, by shaking.

[0023] It's best to position the projection at the edge of the end wall. It's also best to position the projection at the edge of the end wall where the off-center filling opening is located. This helps ensure that the scraped-off soap bars fall directly into the filling opening.

[0024] In a further or alternative embodiment of the proposed hand pump, the pump body is a hollow body, within whose interior the receiving space for the fluid to be pumped is located. This facilitates a compact design of the hand pump. This also facilitates handling for the user, since grasping the pump body simultaneously grasps the receiving space for the fluid to be pumped. The pump body and the receiving space can thus be easily grasped or held with a single hand.

[0025] The proposed hand pump can be designed such that the pump body is elongated, with the filler opening located at one longitudinal end and the fluid outlet at the other longitudinal end. Thus, the proposed hand pump has a shape that promotes compression of the pump body. This can be easily accomplished transversely to the longitudinal extension of the pump body. Furthermore, this promotes a compact design of the hand pump transversely to the longitudinal extension of the pump body.

[0026] An ergonomically advantageous pump body shape is favored if, according to one design, the pump body has the shape of an elongated ellipsoid over at least one length section, i.e., the longitudinal axis of the ellipsoid extends in the longitudinal direction of the pump body. This facilitates a forceful grip of the hand, which compresses the pump body and thus exerts a pumping action. It has also been shown that a pump body designed in this way fits comfortably in the hand.

[0027] In a further or different embodiment, the proposed hand pump comprises a shut-off device associated with the fluid outlet. The shut-off device is provided, in particular, to be able to shut off the fluid outlet. For example, the shut-off device has a closing element. For example, the shut-off device is configured to move the closing element between a closed position that closes the fluid outlet and an open position that releases the fluid outlet.

[0028] This measure also facilitates the handling of the proposed hand pump, as the shut-off device enables a fluid-tight closure of the fluid outlet. Any fluid already collected in the proposed hand pump remains in the receiving chamber. This prevents unwanted dripping of the fluid through the fluid outlet.

[0029] Preferably, the shut-off device is manually operable. This facilitates technically simple closing and opening of the fluid outlet. To move the closing element manually between the closed and open positions, a handle is provided, for example. In particular, the handle is associated with the closing element, for example, arranged on the closing element. The handle facilitates the operation of the closing element.

[0030] The handle can be a handwheel, knob, or similar grip section or part. For example, the handle is molded onto the locking element. In principle, the handle and the locking element can also be separate components that are firmly connected to each other, for example, in a rotationally fixed manner.

[0031] One possible embodiment consists in that the closing element is mounted in a guide in such a way that, in order to move between the closed position and the open position, the closing element executes a movement along a movement axis and / or around the or a movement axis.

[0032] A radially compact design with respect to the movement axis is favored if, according to a further embodiment, the closing element has a fluid passage. In this case, the closing element serves to conduct the fluid when the closing element is in the open position. In this respect, the closing element also has a conducting function in addition to its blocking function.

[0033] To perform its blocking function, the locking element can have at least one closing surface, which, for example, runs transversely to the movement axis. A counter-surface can be associated with the closing surface. The closing surface and the counter-surface are configured in particular such that, in the closed position, the closing surface and the counter-surface are in fluid-tight contact with one another, and, in the open position, the closing surface and the counter-surface are spaced apart from one another.

[0034] The counter surface is preferably arranged fixedly to the housing of the hand pump. For example, the counter surface is firmly connected to the guide, or the guide and the counter surface are formed on a common component, which is, for example, firmly connected to the pump body.

[0035] For example, the locking element is designed to be moved between the closed and open positions by a screwing movement relative to the guide. For this purpose, the locking element has a thread that engages with a mating thread of the guide. This facilitates a technically simple and / or cost-effective production of the shut-off device.

[0036] At the same time, performing a screwing movement is relatively easy for the user to handle.

[0037] In a further or different embodiment, the hand pump has a foam-generating element. In particular, the foam-generating element is arranged in the fluid outlet. In particular, the foam-generating element is arranged in the fluid outlet such that the pumped fluid flows through it. The proposed hand pump thus has a foaming function. If the fluid supplied to the fluid outlet is foamable, this results in foam formation, so that at least a portion of the fluid passing through the fluid outlet is discharged as foam.

[0038] The foam-generating element, for example, is sponge-like. It has been shown that such a property promotes foam formation. Particularly good foam formation has been observed when, for example, the foam-generating element comprises or consists of a felt material. In principle, the foam-generating element can also be or have a mesh structure, particularly a metallic mesh structure. It has also been observed in practice that foam formation is promoted with such a foam-generating element. The mesh structure should preferably be relatively tightly meshed.

[0039] According to one aspect, a use of the hand pump described above for dispensing a cleaning agent, in particular a body cleaning agent, is proposed.

[0040] According to a further aspect, the use of the above-described hand pump for foaming a foamable substance, in particular a soap-containing liquid, is proposed. The hand pump is preferably the above-described embodiment with the foam-generating element.

[0041] Further details and features will become apparent from the following description of at least one embodiment with reference to the drawing. Fig. 1 a first exemplary embodiment of a hand pump in a perspective view, Fig. 2 the exemplary hand pump of the Fig. 1 in another perspective view, Fig. 3 the exemplary hand pump of the Fig. 1 in a sectional view, Fig. 4 a section of the exemplary hand pump according to the Fig. 1 in the area of ​​a shut-off device in a sectional view, with the shut-off device closed, Fig. 5 the section of the Fig. 4, with the shut-off device open, Fig. 6 the exemplary hand pump of the Fig. 1 in a state of operation, Fig. 7 the possible components of the exemplary hand pump according to the Fig. 1 in an exploded view, Fig. 8 a second exemplary embodiment of a hand pump in a perspective view, Fig. 9 the exemplary hand pump of the Fig. 8 in another perspective view, Fig. 10 the exemplary hand pump of the Fig. 8 in a sectional view, and Fig. 11 the exemplary hand pump of the Fig. 8 in a top view.

[0042] Fig. 1 and Fig. 2 show - in schematic representation - a first exemplary embodiment of a hand pump 1 in different perspective views. Fig. 3 shows the exemplary hand pump 1 in a longitudinal section along a longitudinal axis 100. The exemplary hand pump 1 is suitable, for example, for dispensing a cleaning agent, such as a body cleanser.

[0043] The exemplary hand pump 1 is, for example, elongated and has, for example, a longitudinal extension extending in the direction of the longitudinal axis 100. The exemplary hand pump 1 comprises a pump body 2, which comprises or consists of an elastically deformable material. The pump body 2 is, in particular, configured to exert a pumping action through elastic deformation. The pump body 2 is, in particular, configured to exert a pumping action through compression. For example, the pump body 2 performs the function of a squeeze body.

[0044] The exemplary hand pump 1 comprises a gripping surface 3, in particular for manually operating the pump body 2. The gripping surface 3 allows the exemplary hand pump 1 to be held in one hand. For example, the gripping surface 3 is arranged, in particular formed, for example molded, on the pump body 2. For example, the gripping surface 3 is arranged, in particular formed, for example molded, on the outer circumference of the pump body 2. For example, the gripping surface 3 extends at least over a circumferential section and / or longitudinal section of the outer circumference of the pump body 2.

[0045] The gripping surface 3 can be provided with a ribbing 3.1. The tactile feel of the ribbing 3.1 promotes a non-slip grip on the gripping surface 3. Depending on the design, the ribbing 3.1 can enhance the visual appearance of the exemplary hand pump 1. For example, the ribbing 3.1 extends at least over a circumferential section and / or length section of the outer circumference of the pump body 2.

[0046] The exemplary hand pump 1 comprises a receiving chamber 4 ( Fig. 3) for receiving a fluid to be pumped, as well as a fluid inlet 5 and a fluid outlet 6. In particular, the fluid inlet 5 is fluidly connected to the receiving chamber 4. In particular, the receiving chamber 4 is fluidly connected to the fluid outlet 6. For example, the fluid inlet 5 and the fluid outlet 6 are fluidly connected to one another, for example via the receiving chamber 4. Preferably, the fluid inlet 5 and the fluid outlet 6 are spatially separated from one another, in particular arranged at a distance from one another. For example, the fluid inlet 5 and the fluid outlet 6 are located on opposite sides 8, 9 of the exemplary hand pump 1.

[0047] In the exemplary hand pump 1, the fluid inlet 5 has a filling opening 7, for example, to fill with fluid, in particular to fill the receiving space 4 with fluid. The exemplary hand pump 1 is preferably designed such that the filling opening 7 can be closed, in particular fluid-tight, by a user's hand or at least one finger of the hand. For example, the filling opening 7 is round, in particular circular, for this purpose. For example, the filling opening 7 has an opening diameter which is between 5 mm and 15 mm, in particular between 7 mm and 13 mm, in particular between 9 mm and 11 mm. For example, the opening diameter is approximately 10 mm.

[0048] To facilitate fluid-tight closure, for example, with a fingertip, the filling opening 7 can be formed on a surface section 10 that is recessed toward the filling opening 7. This recess 10.1 can extend circumferentially around the filling opening 7. For example, the recess 10.1 extends to the edge of the filling opening 7. For example, the surface section 10 comprises or consists of a dimensionally stable material.

[0049] Preferably, the gripping surface 3 extends far enough in the direction of the filling opening 7 that the filling opening 7 can be reached with a finger of a user's hand grasping the gripping surface 3. The user can thus hold the exemplary hand pump 1 with one hand and close the filling opening 7 with this hand or with a finger of the hand, while simultaneously elastically deforming the pump body 2 with this one hand, thus exerting a pumping action. The spatial proximity of the filling opening 7 to the gripping surface 3 thus facilitates one-handed operation of the exemplary hand pump 1.

[0050] The exemplary hand pump 1 can have a material section 11 that runs around the filling opening 7 and extends outward therefrom in a funnel shape. The funnel shape of the material section 11 provides a filling aid for filling the exemplary hand pump 1 via the filling opening 7. The material section 11 can comprise or consist of a flexible material. In this case, the material section 11 is configured, for example, to exert a suction cup effect on a preferably smooth reference surface.

[0051] Additionally or alternatively, the material section 11 can be designed to be folded from the outwardly facing extension into a rearward facing extension ( Fig. 6). For example, the material of the material section 11 is an elastically deformable material. For example, the material section 11 is integrally formed on the pump body 2. For example, the material section 11 and the pump body 2 are formed from the same material.

[0052] In the exemplary hand pump 1, the pump body 2 is, for example, elongated and extends with its longitudinal axis in the direction of the longitudinal axis 100 of the exemplary hand pump 1. For example, the fluid inlet 5, in particular the filling opening 7, is located in the region of one longitudinal end 14 of the pump body 2, and the fluid outlet 6 is arranged in the region of the other longitudinal end 15. The pump body 2 itself can be designed as an elongated ellipsoid or have the shape of an elongated ellipsoid over at least one longitudinal section. The elongated ellipsoid preferably extends with its longitudinal extent in the direction of the longitudinal axis 100 of the exemplary hand pump 1.

[0053] As can be seen in particular from the Fig. 3, the pump body 2 can be a hollow body 12 having an interior space 13. For example, the receiving space 4 for the fluid is located in the interior space 13. Preferably, the interior space 13 forms the receiving space 4 for the fluid. By actuating the pump body 2, the fluid located in the receiving space 4 can be forced out via the fluid outlet 6. For this purpose, the filling opening 7 is preferably closed beforehand.

[0054] Additionally, a shut-off device 16 can be provided to close the fluid outlet 6. For example, the shut-off device 16 has a closing element 16.1 for this purpose. For example, the shut-off device 16 is configured to move the closing element 16.1 between a closed position S closing the fluid outlet 6 and an open position O releasing the fluid outlet 6. Fig. 4 shows a section A from the Fig. 3 of the exemplary hand pump 1 in the area of ​​the shut-off device 16, where the closing element 16.1 is, for example, in the closed position S. Fig. 5 also shows section A, where the locking element 16.1 is in the open position O, for example.

[0055] To enable the locking element 16.1 to move between the closed position S and the open position O, a handle 16.2 is assigned to the locking element 16.1, for example. The handle 16.2 is arranged, for example, on the locking element 16.1, in particular directly and / or immediately. For example, the handle 16.2 is integrally formed on the locking element 16.1. The locking element 16.1 can be manually operated by the handle 16.2.

[0056] In order to be able to move the closing element 16.1 between the closed position S and the open position O, the closing element 16.1 is mounted, for example, in a guide 16.3. For example, the shut-off device 16 is configured such that, in order to move between the closed position S and the open position O, the closing element 16.1 executes a movement relative to the guide 16.3 along a movement axis B and / or about a movement axis B. For example, the movement axis B runs coaxially to the longitudinal axis 100 of the exemplary hand pump 1 or lies on the longitudinal axis 100.

[0057] For example, the closing element 16.1 has a fluid passage 17. For example, the fluid passage 17 extends in the direction of the movement axis B. The fluid located in the receiving chamber 4 can be discharged to the outside through the fluid passage 17 when the exemplary hand pump 1 is actuated, thereby causing the pump body 2 to undergo elastic deformation. In this respect, the closing element 16.1 is located in the flow path of the fluid and, through its fluid passage 17, enables the fluid to flow outward, provided the closing element 16.1 is in the open position O.

[0058] For example, the closing element 16.1 has at least one closing surface 18. The closing surface 18 corresponds, for example, to a counter surface 19, which is arranged, for example, stationary with respect to the pump body 2. For example, the counter surface 19 is arranged, in particular formed, on a guide element 20 arranged stationary with respect to the pump body 2. Preferably, the guide element 20 also forms the guide 16.3 for the closing element 16.1. In the closed position S ( Fig. 4), the closing surface 18 is in preferably fluid-tight contact with the counter surface 19. One or more fluid channels 20.1 provided in the guide element 20 are thereby closed.

[0059] For example, the closing element 16.1 has a stop 16.4 or a stop surface to limit the movement of the closing element 16.1. For example, a counter-stop 26 or a counter-surface of the guide element 20 is assigned to the stop 16.4, in particular arranged thereon. For example, in the open position O, the closing element 16.1 is brought with its stop 16.4 into contact with the counter-stop 26. In this case, the open position O is a maximum open position, as shown by way of example in the Fig. 5. For example, at least the area of ​​the stop 16.4 or the stop surface comprises or consists of a soft plastic.

[0060] This makes it possible for the contact between the stop 16.4 and the counter-stop 26 to be overcome when a predetermined release force is applied, as the area of ​​the stop 16.4 deforms to such an extent that the stop 16.4 disengages from the counter-stop 26. The locking element 16.1 can then be removed from the guide element 20. Conversely, the area of ​​the counter-stop 26 of the guide element 20 can also comprise or consist of a soft plastic.

[0061] In the Fig. 4, the fluid present at the shut-off device 16, which is located in the receiving chamber 4, is indicated by dashed arrows. In the open position O ( Fig. 5) the closing surface 18 is located at a distance from the counter surface 19, whereby at least one of the fluid channels 20.1 is open and thus the fluid can pass through the shut-off device 16, as is indicated by way of example by the dashed lines.

[0062] The exemplary hand pump 1 presents a possible mechanism by which the closing element 16.1 can be moved relative to the guide 16.3 between the closed position S and the open position O. The mechanism is a screw mechanism. For example, the closing element 16.1 has a thread 21 that engages with a mating thread 22, for example, of the guide 16.3 or the guide element 20. For example, the closing element 16.1 is configured to be moved relative to the guide 16.3 or the guide element 20 between the closed position S and the open position O by a screwing movement.

[0063] For example, the closing element 16.1 and the guide 16.3 or the guide element 20 are configured such that the screwing movement occurs by a rotational movement about the movement axis B and a feed movement takes place in the direction of the movement axis B, by which the closing element 16.1 is moved between the closed position S and the open position O. For example, the at least one closing surface 18 lies transversely to the movement axis B. For example, the handle 16.2 is designed as a handwheel whose central axis runs coaxially to the movement axis B. For example, the shut-off device 16 with its components is arranged coaxially to the longitudinal axis 100 of the exemplary hand pump 1.

[0064] In the exemplary hand pump 1, the fluid outlet 6 can perform a nozzle function and / or have a nozzle, in particular a separate nozzle. The nozzle or nozzle function is designed, for example, such that the fluid jet emerging from the exemplary hand pump 1 is a spray jet or the fluid emerges in an atomized form.

[0065] Additionally or alternatively, the exemplary hand pump 1 can have a foam-generating element 23. The foam-generating element 23 is, for example, assigned to the fluid outlet 5. For example, the foam-generating element 23 is arranged in the fluid outlet 5 such that the pumped fluid flows through it. As the fluid flows through, the foam-generating element 23 causes the fluid to foam up, or it supports foaming, provided the fluid consists of a foamable substance or contains such a substance. This is the case, for example, if the fluid is a soap-containing liquid.

[0066] The foam-generating element 23 is, for example, sponge-like. The foam-generating element 23 can be a felt material or comprise a felt material. For example, the foam-generating element 23 is accommodated in a receptacle of the closing element 16.1, which is preferably releasably closed by a cover 24 provided with outlet openings 25. The cover 24 is arranged, for example, at the preferably outer end of the fluid passage 17 or in the region of the preferably outer end of the fluid passage 17. This enables replacement of the foam-generating element 23 from the outside.

[0067] For example, a sleeve 60 is inserted into the guide element 20. For example, the sleeve 60 at least partially forms the fluid passage 17 with its inner circumference. For example, the sleeve 60 is supported with one longitudinal end against the guide element 20. For example, the sleeve 60 is supported with its other longitudinal end against the cover 24. For example, the cover 24 is fastened to the handle 16.2, in particular releasably fastened.

[0068] For example, the sleeve 60 forms a receptacle for the foam-generating element 23 with a longitudinal end, in particular the longitudinal end facing the cover 24. In this respect, the sleeve 60 serves, for example, as a holder for the foam-generating element 23 and / or promotes the flow of the fluid through the foam-generating element 23.

[0069] A possible mode of operation of the exemplary hand pump 1 is described below as an example: In a first step, the exemplary hand pump 1 is filled with a fluid, in particular a liquid, via the filling opening 7. The fluid can be a liquid cleaning agent, such as liquid soap. Alternatively, the fluid can be water, in particular tap water.

[0070] It is also possible for a first fluid, such as a liquid cleaning agent, and a second fluid, such as water, to be filled simultaneously or at different times, for example in order to dilute the cleaning agent to a certain level. It is also possible for a cleaning agent in solid form, such as soap flakes, to be added in addition to the liquid, such as water or tap water. Preferably, when filling the exemplary hand pump 1, the material section 11 is according to the Fig. 3 funnel-shaped and positioned outwards, thus serving as a filling aid.

[0071] Preferably, a user has already taken the exemplary hand pump 1 in one hand before filling, for example, grasped the exemplary hand pump 1 at the gripping surface 3. Preferably, the shut-off device 16 has been brought into a closed state before filling. The closing element 16.1 should therefore be in the closed position S according to the Fig. 4 are present.

[0072] Preferably, in a subsequent step, the material section 11 is now formed into a backward extension ( Fig. 6) is folded over, and the filling opening 7 is sealed, for example, with the tip of a finger. The finger, for example, belongs to the hand of the user who has grasped the gripping surface 3. The exemplary hand pump 1 can be shaken in this state, for example, to mix a mixture of water and liquid soap or soap flakes held in the receiving space 4.

[0073] Preferably, in a further step, the shut-off device 16 is opened, for example the closing element 16.1 is moved into the open position O according to the Fig. 5. The pump body 2 is then compressed by hand at the gripping surface 3, while simultaneously keeping the filling opening 7 closed by the finger. By compressing the pump body 2, the fluid located in the receiving chamber 4 is discharged via the fluid outlet 6.

[0074] If the foam-generating element 23 described above is present, the fluid flow passes through this foam-generating element 23 and is thereby at least partially foamed. Thus, a fluid flow flows out of the exemplary hand pump 1, which, for example, is at least partially foamed and / or atomized and / or forms a spray jet.

[0075] Fig. Figure 6 shows an example of the exemplary hand pump 1 during a pumping process. The fingertip, which is indicated there as an example and is provided with the reference number 200, is sealingly located on the filling opening 7 and is held by a (in the Fig. 6 (not shown hand), the pump body 2 is compressed, as indicated by the arrows 210 shown as an example. The fluid flowing from the fluid outlet 6 ( Fig. 2) The fluid flowing out is identified by reference number 220.

[0076] After compressing the pump body 2 and emptying or partially emptying the receiving chamber 4 with the fluid contained therein, the filling opening 7 is then released again by the finger, allowing air to flow into the exemplary hand pump 1. As a result, the pump body 2 returns to its original shape. The exemplary hand pump 1 can now be refilled with fluid to perform another pumping operation.

[0077] Fig. Figure 6 shows examples of the individual components that can comprise the exemplary hand pump 1. For example, the pump body 2 forms a base body 40, onto which the material section 11 is or can be integrally formed. The base body 40 comprises, for example, or consists of, an elastically deformable material.

[0078] Furthermore, a filler ring 30 can be provided. The filler ring 30 forms, for example, the filler opening 7 with its inner circumference and can be inserted into an inlet opening 41 of the base body 40 via its outer circumference. The filler ring 30 has, for example, the surface section 10 in the radial direction with respect to its central axis. An outwardly projecting wiper or scraper 31 can also be arranged, in particular molded, on the filler ring 30. For example, the filler ring 30 comprises or consists of a dimensionally stable material, such as a hard plastic. For example, the filler ring 30 is connected to the base body 40. For example, the filler ring 30 is glued to the base body 40.

[0079] For example, the base body 40 has an outlet opening 42 axially opposite the inlet opening 41. A component of the shut-off device 16 can be secured therein. This component can be the guide element 20 described above. For example, the guide element 20 is embedded in the outlet opening 42. For example, the guide element 20 is glued into the outlet opening 42.

[0080] In the Fig. Figure 6 shows examples of the possible components of the shut-off device 16 from which the shut-off device 16 can be composed. For example, the closing element 16.1, the thread 21, and the handle 16.2 are formed on separate components.

[0081] For example, the thread 21 is formed on a threaded ring 50, which can be slid with its inner circumference over a shaft 27 of the locking element 16.1. For example, the threaded ring 50 is attached to the shaft 27 of the locking element 16.1 or at least connected in a rotationally fixed manner to the shaft 27 of the locking element 16.1. For this purpose, the shaft 27 can have at least one longitudinal projection 28 extending in the axial direction relative to the longitudinal axis 100, and the threaded ring 50 can have a corresponding longitudinal groove 51.

[0082] For example, the sleeve 60 has at least one external longitudinal groove 61. For example, the longitudinal groove 61 serves to engage with a (in the Fig. 6 not shown) longitudinal projection on the inner circumference of the shaft 27 to form a positive, rotationally fixed connection with the guide element 20 when the sleeve 60 is mounted in the guide element 20.

[0083] The handle 16.2 is designed, for example, as a handwheel 70, which lies with its central axis on the movement axis B or the longitudinal axis 100 and is ring-shaped. For example, the handwheel 70 is also pushed onto the shaft 27 of the locking element 16.1 with its inner circumference. For example, the handwheel 70 is attached to the shaft 27 of the locking element 16.1 or at least the locking element 16.1 is connected in a rotationally fixed manner to the shaft 27. For this purpose, the handwheel 70 can have at least one longitudinal groove 71, which corresponds to the at least one longitudinal projection 28 of the shaft 27.

[0084] Fig. 8 and Fig. 9 show a second exemplary embodiment of a hand pump 1' in different perspective views. Fig. 10 shows the exemplary hand pump 1' in a longitudinal section along the longitudinal axis 100. Fig. Figure 11 shows the exemplary hand pump 1' in a top view. The exemplary hand pump 1 is also suitable for dispensing a cleaning agent, such as a body cleanser.

[0085] Components of the exemplary hand pump 1' according to the Fig. 8 to 11, which are made with components of the exemplary hand pump 1 according to Fig. 1 to 7 are identical in construction or function, are provided with the same reference numerals; in this respect, reference is made to the description of the exemplary hand pump 1 according to the Fig. 1 to 7.

[0086] The exemplary hand pump 1' of the Fig. 8 to 11 differs from the exemplary hand pump 1 of the Fig. 1 to 7, among other things, in that a fluid inlet 5' and a fluid outlet 6' are fluidically connected to the receiving space 4, which are assigned to a common opening 82. The fluid inlet 5' and the fluid outlet 6' thus use the same opening 82 for admitting a fluid into the receiving space 4 and also for discharging the fluid from the receiving space 4. The common opening 82 can be a filling opening 7', for example, corresponding to the above-described filling opening 7 of the exemplary hand pump 1.

[0087] The exemplary hand pump 1' can have the above-described material section 11, which, for example, runs around the filling opening 7' and extends outward therefrom in a funnel shape. In the exemplary hand pump 1', the funnel shape of the material section 11 also provides a filling aid for filling the receiving space 4 via the filling opening 7'. In the exemplary hand pump 1', the material section 11 can also comprise or consist of a flexible material. For example, the material section 11 is then configured to exert a suction cup effect on a preferably smooth reference surface.

[0088] Also in the exemplary hand pump 1', the material section 11 can be configured to be folded from the outwardly facing extension into a backward facing extension, as is the case, for example, in the Fig.6 is illustrated using the exemplary hand pump 1. In the exemplary hand pump 1', the material of the material section 11 can also be an elastically deformable material. For example, the material section 11 is integrally formed on the pump body 2. For example, the material section 11 and the pump body 2 are formed from the same material.

[0089] In the exemplary hand pump 1', the filling opening 7' and in particular the material section 11 are located in the region of one longitudinal end 14 of the pump body 2 or receiving chamber 4. In the region of the opposite longitudinal end 15, the pump body 2 or receiving chamber 4 is preferably closed. However, a further material section 11' can be provided there, which can be designed and / or arranged correspondingly to the material section 11.

[0090] For example, the additional material section 11' extends around the longitudinal axis 100 and extends outward in a funnel shape from one end 14 of the pump body 2 or receiving space 4. This allows the exemplary hand pump 1' to exert the suction cup effect described above on the opposite sides 8, 9, depending on which side 8 or 9 the exemplary hand pump 1' is pressed against a reference surface.

[0091] For example, the pump body 2, with the material sections 11, 11' arranged at its longitudinal ends 14, 15, forms a rotationally symmetrical body that is rotationally symmetrical with respect to the central axis 110 of the exemplary hand pump 1'. For example, the central axis 110 lies on the longitudinal axis 100. For example, this body is mirror-symmetrical with respect to its central transverse axis 120.

[0092] For example, the pump body 2 has an end wall 80 at one longitudinal end 14, which is arranged transversely, in particular orthogonally, to the longitudinal axis 100 or central axis 110. For example, the end wall 80 is flat or substantially flat. For example, the circumferential material section 11 extends outward from the end wall 80. For example, the circumferential material step 11 surrounds the end warning 80.

[0093] For example, the pump body 2 has a further end wall 80' at the other longitudinal end 15, which is arranged transversely, in particular orthogonally, to the longitudinal axis 100 or central axis 110. For example, the further end wall 80' is also flat or substantially flat. For example, the further end wall 80' is flat or substantially flat. For example, the circumferential material section 11' extends outward from the further end wall 80'. For example, the circumferential material section 11' surrounds the further end wall 80'.

[0094] For example, the end wall 80 has the filling opening 7'. For example, the filling opening 7 is arranged off-center relative to the central axis 110. For example, the filling opening 7 is offset off-center relative to the central axis 110 toward an edge region of the end wall 80.

[0095] In the exemplary hand pump 1', a preferably rib-shaped projection 81 or other material section can be provided, which is arranged, for example, in an edge region of the end wall 80 and is configured to be used as a scraper or wiper. For example, the projection 81 protrudes from the end wall 80. The projection 81 makes it possible for small pieces of soap to be scraped off a soap block when the soap block is moved along the projection 81.

[0096] Preferably, the filling opening 7 is offset off-center from the central axis 110 in the direction of the edge region of the end wall 80, in which the projection 81 is located. This facilitates the scraped-off soap bars falling directly into the filling opening 7.

[0097] In the present disclosure, a hard plastic is understood to mean in particular a material which contains or consists of a polycarbonate (PC) or an acrylonitrile butadiene styrene polymer (ABS).

[0098] In the present disclosure, a soft plastic is understood to mean, in particular, a material that comprises or consists of at least one component from the group of thermoplastic polymers, such as polyvinyl chloride (PVC), in particular soft PVC, or at least one component from the group of thermoplastic elastomers (TPE), such as TPU. The term "soft plastic" in the present disclosure also includes, in particular, a silicone. List of reference symbols 1.1' hand pump 2 pump bodies 3 Gripping surface 3.1 Corrugation 4 Recording room 5.5' fluid inlet 6, 6' fluid outlet 7, 7' filling opening 8 Page 9 Page 10 Area section 10.1 In-depth 11, 11' Material section 12 hollow bodies 13 Interior 14 End 15 End 16 Shut-off device 16.1 Locking element 16.2 Handling 16.3 Leadership 16.4 Stop 17 Fluid passage 18 locking surface 19 Counter surface 20 guide element 20.1 Fluid channel 21 threads 22 counter threads 23 foam-generating element 24 lids 25 outlet openings 26 Counter stop 27 shaft 28 Longitudinal projection 30 Filling ring 31 scrapers 40 basic bodies 41 Entrance opening 42 Exit opening 50 threaded ring 51 Longitudinal groove 60 sleeve 61 Longitudinal groove 70 Handwheel 71 Longitudinal groove 80, 80' end wall 81 lead 82 common opening 100 Longitudinal axis 110 Central axis 120 central transverse axis 200 fingertips 210 Arrow 220 escaping fluid B Movement axis S Closed position O Disclosure

Claims

[1] Hand pump (1; 1'), comprising an elastically deformable pump body (2) which is designed to exert a pumping action by elastic deformation, a gripping surface (3) for manually operating the pump body (2), a receiving space (4) for receiving a fluid to be conveyed, and a fluid inlet (5; 5') and a fluid outlet (6; 6') which are fluidly connected to the receiving space (4), wherein the fluid inlet (5) has a filling opening (7; 7') which is designed to be closed by a hand of a user or at least one finger of the hand. [2] Hand pump according to claim 1, wherein the gripping surface (3) is arranged on the pump body (2) and extends in the direction of the filling opening (7; 7') so far that the filling opening (7; 7') can be reached with a finger of a user's hand grasping the gripping surface (3). [3] Hand pump according to claim 1 or 2, wherein the filling opening (7; 7') is formed on a surface portion (10) which is recessed towards the filling opening (7; 7'). [4] Hand pump according to claim 3, wherein the surface portion (10) is recessed towards the filling opening (7; 7') and circumferentially around the filling opening (7; 7'). [5] Hand pump according to claim 3 or 4, wherein the surface portion (10) comprises or consists of a dimensionally stable material, in particular a hard plastic. [6] Hand pump according to one of the preceding claims, wherein the filling opening (7; 7') is round, in particular circular. [7] Hand pump according to one of the preceding claims, wherein the filling opening (7; 7') has an opening diameter which is between 5 mm and 15 mm, in particular between 7 mm and 13 mm, in particular between 9 mm and 11 mm, preferably about 10 mm. [8] Hand pump according to one of the preceding claims, comprising a material section (11) which runs around the filling opening (7; 7') and extends outwards therefrom in a funnel shape. [9] Hand pump according to claim 8, wherein the material portion (11) comprises or consists of a flexible material. [10] Hand pump according to claim 9, wherein the material section (11) is arranged to exert a suction cup effect on a preferably smooth reference surface. [11] Hand pump according to claim 9 or 10, wherein the material portion (11) is arranged to be folded from the outwardly facing extension into a rearward facing extension. [12] Hand pump according to one of the preceding claims, comprising an end wall (80) which is transverse to the central axis (110) of the hand pump (1') in the region of a longitudinal end (14) and on which the filling opening (7') is arranged eccentrically to the central axis (110). [13] Hand pump according to claim 12, comprising a preferably rib-shaped projection (81) which is arranged in an edge region of the end wall (80) and is designed to be used as a scraper. [14] Hand pump according to one of the preceding claims, wherein the fluid inlet (5) and the fluid outlet (6) are spatially separated from each other. [15] Hand pump according to one of the preceding claims, wherein the filling opening (7) and the fluid outlet (6) are arranged on different sides (8, 9) of the hand pump (1), in particular on opposite sides (8, 9). [16] Hand pump according to one of the preceding claims, wherein the pump body (2) is elongated, at one longitudinal end (14) of which the filling opening (7) is arranged and at the other longitudinal end (15) of which the fluid outlet (6) is arranged. [17] Hand pump according to one of claims 1 to 13, wherein the fluid inlet (5') and the fluid outlet (6') are spatially together, in particular are assigned to the same side of the hand pump (1'). [18] Hand pump according to one of claims 1 to 13 and 17, wherein the fluid inlet (5') and the fluid outlet (6') are associated with a common opening (82). [19] Hand pump according to claim 18, wherein the filling opening (7') has or forms the common opening (82). [20] Hand pump (1; 1'), in particular according to one of the preceding claims, comprising an elastically deformable pump body (2) which is designed to exert a pumping action by elastic deformation, a gripping surface (3) for manually operating the pump body (2), a receiving space (4) for receiving a fluid to be conveyed, and a fluid inlet (5; 5') and a fluid outlet (6; 6') which are fluidly connected to the receiving space (4), wherein the pump body (2) is a hollow body (12), in the interior (13) of which the receiving space (4) for the fluid to be pumped is located. [21] Hand pump according to claim 20, wherein the pump body (2) has the shape of an elongated ellipsoid (13) over at least one length section. [22] Hand pump (1), in particular according to one of the preceding claims, comprising an elastically deformable pump body (2) which is designed to exert a pumping action by elastic deformation, a gripping surface (3) for manually operating the pump body (2), a receiving space (4) for receiving a fluid to be conveyed, a fluid inlet (5) and a fluid outlet (6) which are fluidly connected to the receiving space (4), and a shut-off device (16) which is assigned to the fluid outlet (6) and is designed to move a closing element (16.1) between a closed position (S) closing the fluid outlet (6) and an open position (O) releasing the fluid outlet (6). [23] Hand pump according to claim 22, wherein the shut-off device (16) is manually operable and, for this purpose, a handle (16.2) is assigned to the closing element (16.1) in order to move it manually between the closed position (S) and the open position (O). [24] Hand pump according to claim 23, wherein the handle (16.2) is formed on the closing element (16.1). [25] Hand pump according to one of claims 22 to 24, wherein the closing element (16.1) is mounted in a guide (16.3) such that, in order to move between the closed position (S) and the open position (O), the closing element (16.1) executes a movement along a movement axis (B) and / or around the movement axis (B). [26] Hand pump according to claim 25, wherein the closing element (16.1) has a fluid passage (17) which extends in the direction of the movement axis (B). [27] Hand pump according to claim 25 or 26, wherein the closing element (16.1) has at least one closing surface (18) which extends transversely to the axis of movement (B). [28] Hand pump according to one of claims 25 to 27, wherein the closing element (16.1) has a thread (21) which engages in a mating thread (22) of the guide (16.3), and the closing element (16.1) is arranged to be moved by a screwing movement relative to the guide (16.3) between the closed position (S) and the open position (O). [29] Hand pump (1), in particular according to one of the preceding claims, comprising an elastically deformable pump body (2) which is designed to exert a pumping action by elastic deformation, a gripping surface (3) for manually operating the pump body (2), a receiving space (4) for receiving a fluid to be conveyed, a fluid inlet (5) and a fluid outlet (6) which are fluidly connected to the receiving space (4), and a foam-generating element (23) which is arranged in the fluid outlet (5) such that it is flowed through by the conveyed fluid. [30] Hand pump according to claim 29, wherein the foam-generating element (23) is sponge-like. [31] Hand pump according to claim 29 or 30, wherein the foam-generating element (23) comprises or consists of a felt material. [32] Use of a hand pump (1; 1') according to one of the preceding claims for dispensing a cleaning agent, in particular a body cleaning agent. [33] Use of a hand pump (1) according to one of claims 29 to 31 for foaming a foamable substance, in particular a soap-containing liquid.

Images