Pumping device

Abstract

A pumping device has a movable part and a fixed part, wherein the movable part can reciprocate relative to the fixed part, so as to dispense a product contained in a container through a straw connected to the fixed part, wherein the pumping device includes an elastic member, one end of the elastic member is connected to or supported on the movable part, and the other end of the elastic member is connected to or supported on the container, or supported on the container through the fixed part. The pumping device of this structure allows the elastic member to be made of plastic, and the required elastic force can also be obtained.

Description

Technical Field

[0001] The present invention relates to the field of product dispensing, and in particular to a pumping device, such as a press pump, a hand button pump, etc., which can be used to dispense fluid and semi-fluid materials such as liquids and emulsions from a container. Background Art

[0002] A pumping device is usually provided in a container for containing products such as sanitary products, medicines, foods, etc., for dispensing the products from the container. Conventional pumps available on the market are usually provided with a metal elastic mechanism, such as a metal spring, to provide a biasing force to movable parts of the pump, such as a pressing head, so as to give these movable parts the ability to reciprocate.

[0003] During use, it was found that the metal elastic mechanism has defects. First, the metal elastic parts will be immersed in the product for a long time, resulting in rust, and the impurities generated by the rust will contaminate the liquid. Secondly, in general product pumping devices, except for the metal elastic parts, in order to reduce manufacturing costs, the remaining parts are usually made of plastic. In this way, when recycling the pumping device after use, it is necessary to disassemble the pumping device, separate the metal elastic parts from other plastic parts, and recycle them separately. This will affect the efficiency of recycling.

[0004] In order to solve this problem and improve the recycling efficiency of the pumping device, a pumping device with a new structural design is needed, which can solve the problem of metal elastic parts easily rusting and causing pollution, and can provide the same or similar elastic properties as technical springs. Summary of the invention

[0005] The present invention is made based on the problems existing in the prior art described above. The purpose of the present invention is to provide a pumping device with a novel structure, which allows efficient recycling and reuse. Furthermore, the structure of the pumping device allows the use of plastic materials to manufacture elastic parts, and can prevent the elastic parts made of plastic from yielding and deforming due to long-term pressure, resulting in reduced elastic force.

[0006] The pumping device of the present invention has a movable part and a fixed part, wherein the movable part can reciprocate relative to the fixed part, thereby dispensing the product contained in the container through a straw connected to the fixed part, wherein the pumping device includes an elastic member, one end of the elastic member is supported or connected to the movable part, and the other end of the elastic member is supported or connected to the container, or is supported on the container via the fixed part.

[0007] Therefore, with the pumping device having the above structure, the elastic member is directly or indirectly supported or connected to the container, and in particular can be supported on the container, thereby having greater flexibility in the size design of the elastic member, allowing the use of elastic members of larger sizes. In this way, even when the elastic member is made of plastic, it is also possible to ensure that the required elastic force is obtained.

[0008] Specifically, the movable part may include: a pressing head; and a piston rod, which is connected to the pressing head; the fixed part may include: a brace, which is connected to the bottle mouth of the container; a cylinder, which is connected to the brace, accommodated in the container, and connected to the straw, and the piston rod extends into the interior of the container; wherein one end of the elastic member abuts or is fixed on the pressing head or the piston rod.

[0009] The other end of the elastic member abuts against or is fixed on one of the following positions: a bottle shoulder of the container, an outer surface of the bottom of the container, an inner surface of the bottom of the container, and a step formed inside the container.

[0010] In one embodiment, the other end of the elastic member is fixed to the bottle mouth of the container, wherein the elastic member includes an upper ring, a lower ring and at least one elastic strip extending between the upper ring and the lower ring, and at least one fixing strip extends upward from the lower ring, the fixing strip is connected upward to the fixing ring, and the fixing ring is fixed to the bottle mouth.

[0011] Preferably, the pumping device further comprises a relaxation mechanism, which can be switched between a relaxation position and a preload position, wherein the height of the elastic member when the relaxation mechanism is in the relaxation position is greater than the height of the elastic member when the relaxation mechanism is in the preload position. By setting the relaxation mechanism, the elastic member can be in a relaxed state when not in use, thereby avoiding or reducing the yield deformation of the elastic member.

[0012] Preferably, the release mechanism comprises a synchronous sleeve, a first actuator is arranged on the pressing head, and a second actuator is arranged on the synchronous sleeve, and the release mechanism is switched between the release position and the preload position through the interaction between the first actuator and the second actuator.

[0013] Furthermore, the first actuator is a first protrusion formed on the pressing head, and a first inclined surface is formed on the first protrusion; the second actuator is a second protrusion formed on the synchronization ring, and a second inclined surface is formed on the second protrusion; the first inclined surface matches the second inclined surface.

[0014] Preferably, the synchronizing ring is sleeved on the socket, wherein a narrow groove is formed on the inner surface of the synchronizing ring, and a guide rail is formed on the outer surface of the socket, the guide rail cooperates with the narrow groove, thereby guiding the synchronizing ring to move longitudinally relative to the socket along the pumping device and preventing the synchronizing ring from rotating relative to the socket.

[0015] In the pumping device of the present invention, the elastic member may be made of plastic.

[0016] In a specific preferred structure, the movable part includes: a pressing head; and a piston rod, the piston rod is connected to the pressing head, wherein the pressing head is provided with a pressing flange, and the user's fingers can be buckled on the pressing flange to apply pressure to the pressing head;

[0017] The fixing parts include: a tooth sleeve, which is connected to the bottle mouth of the container; a cylinder, which is connected to the tooth sleeve, accommodated in the container and connected to the straw, and a piston rod extends into the interior of the container;

[0018] One end of the elastic member is abutted against or fixed on the pressing head or the piston rod, and the other end is abutted against or fixed on the brace.

[0019] Furthermore, a guide block is provided on the elastic member, and a recessed portion is formed in the dental brace, and the elastic member can rotate between a relaxed position and a preloaded position, in which the guide block is located in the recessed portion, and in the preloaded position, the guide block leaves the recessed portion, so that the distance between the upper end and the lower end of the elastic member is reduced. Thus, the preload and relaxation functions of the elastic member are realized.

[0020] In addition, the elastic member is also formed with a synchronous sleeve, and the pressing head includes a pressing head lower ring which is sleeved on the synchronous sleeve, wherein a convex rib is formed on one side of the outer surface of the synchronous sleeve and the inner surface of the lower ring of the pressing head, and a groove is formed on the other side, and the convex rib and the groove cooperate with each other so that the elastic member can rotate with the pressing head.

[0021] The elastic member may be arranged outside the pressing head and / or the braces, or may be hidden inside the pressing head and / or the braces. For example, a lower sleeve may be formed at the lower part of the pressing head, and an upper sleeve may be formed at the upper part of the braces, and an internal space may be formed by the mutual cooperation between the lower sleeve and the upper sleeve, and the elastic member may be accommodated in the internal space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings show non-limiting preferred implementation structures of the present invention, and the features and advantages of the present invention can be more clearly seen in conjunction with the accompanying drawings.

[0023] Figure 1 A cross-sectional view of a pumping device according to a first embodiment of the present invention is shown, wherein the pumping device is in a relaxed state.

[0024] Figure 2 Shows Figure 1 Another cross-sectional view of the pumping device is shown, wherein the pumping device is in a preloaded position.

[0025] Figure 3 Shows Figure 1A perspective view of the pumping device shown.

[0026] Figure 4 A perspective view showing a pressing head of the pumping device according to the first embodiment.

[0027] Figure 5 A perspective view of a synchronizing collar of a pumping device of a first embodiment is shown.

[0028] Figure 6 A perspective view of a mouthpiece of a pumping device of a first embodiment is shown.

[0029] Figure 7 A perspective view of an elastic member of a pumping device of a first embodiment is shown.

[0030] Figure 8 A cross-sectional view of a pumping device showing a second embodiment of the present invention.

[0031] Fig. 9 A cross-sectional view showing a pumping device according to a third embodiment of the present invention.

[0032] Fig.10 A cross-sectional view showing a pumping device according to a fourth embodiment of the present invention.

[0033] Fig.11 Shows Fig.10 A perspective view of the elastic member of the pumping device is shown.

[0034] Fig.12 A cross-sectional view showing a pumping device according to a fifth embodiment of the present invention.

[0035] Fig.13 A front view of a pumping device showing a sixth embodiment of the present invention.

[0036] Fig.14 Shows Fig.13 A perspective view of the pumping device shown.

[0037] Fig.15 Shown is the installation on the container Fig.13 A cross-sectional view of a pumping device is shown with the pumping device in a relaxed position.

[0038] Fig.16 Shown is the installation on the container Fig.13 Another cross-sectional view of the pumping device is shown, wherein the pumping device is in a preloaded position.

[0039] Fig.17 A further cross-sectional view of the pumping device of the sixth embodiment is shown, wherein the pumping device is depressed to dispense the product in the container.

[0040] Figures 18a to 18dA cross-sectional view, a bottom view, a top perspective view and a bottom perspective view of the elastic member of the pumping device of the sixth embodiment are respectively shown.

[0041] Figures 19a to 19c A cross-sectional view, a stereoscopic view and a top view of the mouthpiece of the pumping device of the sixth embodiment are respectively shown.

[0042] Figures 20a to 20d A front view, a cross-sectional view, a bottom view and a bottom stereoscopic view of a pressing head of a pumping device according to a sixth embodiment are respectively shown.

[0043] Fig.21 A cross-sectional view showing a pumping device according to a seventh embodiment of the present invention.

[0044] Fig. 22 Shows Fig.21 A three-dimensional view of an elastic member in a pumping device.

[0045] Fig.23 A cross-sectional view showing a pumping device according to an eighth embodiment of the present invention.

[0046] Fig.24a Shows Fig.23 A side view of an elastic member in a pumping device; Figure 24b A three-dimensional view of the elastic member is shown.

[0047] Fig.25a Shown along Fig.23 A cross-sectional view taken along line AA of FIG. 1 shows the structure of an elastic member.

[0048] Fig.25b Shown along Fig.23 A cross-sectional view of another elastic member structure obtained by cutting along line AA. DETAILED DESCRIPTION

[0049] The specific embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the drawings are only preferred embodiments of the present invention and do not limit the scope of the present invention. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to the present invention based on the embodiments shown in the drawings, and the technical features in the described embodiments can be combined arbitrarily without contradiction, and all of these fall within the scope of protection of the present invention.

[0050] In the disclosure of the present invention, the terms "upper", "lower" and the like used to indicate direction or orientation are based on the orientation of the device when in use.

[0051] <First Embodiment>

[0052] Figures 1-2A pumping device 100 according to a first embodiment of the present invention is shown, wherein Figure 1 The pumping device 100 is shown in a relaxed position, Figure 2 The preloaded position of the pumping device 100 is shown. Figure 3 A perspective view of the pumping device 100 is shown.

[0053] As shown in the figure, a pumping device 100 is installed on the container 20. The pumping device 100 includes a pressing head 110, which is relatively movably connected to a toothed sleeve 120. The toothed sleeve 120 is fixedly connected to the outlet of the container 20, and a cylinder 130 of the pumping device 100 is connected to the toothed sleeve 120. A piston rod 140 is connected to the pressing head 110, and a piston (not shown in the figure) is connected to the piston rod 140, and one end of the piston rod 140 connected to the piston extends into the cylinder 130.

[0054] The pumping device 100 of the present invention further includes an elastic member 150 , one end of which is a fixed end supported on the container 20 , and the other end of which is a movable end supported on a movable component composed of a pressing head 110 and the like.

[0055] for Figure 1 and 2 For the pumping device 100 of the structure shown in FIG. 1 , by pressing the pressing head 110, the piston rod 140 and the piston connected thereto move downward in the cylinder 130, thereby pumping out the product in the container. After the pressure applied to the pressing head 110 is removed, the elastic force of the elastic member 150 causes the pressing head 110, the piston rod 140 and the piston to return upward to their initial position, waiting for the next product to be dispensed. In the present invention, the elastic member 150 can also be made of plastic, so that it does not need to be separated from the rest of the pumping device 100 when it is recycled. The specific structure of the elastic member 150 will be described in detail below.

[0056] Preferably, the pumping device 100 further includes a relaxation mechanism, which can move between a relaxation position and a preload position, in which the elastic member 150 is in a relaxed state and in which the elastic member 150 is slightly loaded. Figures 1 to 3 In the exemplary structure shown in FIG. 1 , the release mechanism includes a synchronization ring 160 disposed in contact with the pressing head 110 .

[0057] The preferred structures of the components of the pumping device 100 will be described below.

[0058] Figure 4The figure shows a three-dimensional view of the pressing head 110 of the pumping device 100. The pressing head 110 has a pressing flange 111. When operating the pumping device 100, the user can apply force on the pressing flange 111 with his fingers to press the pressing head 110. A first protrusion 112 is provided on the lower side of the pressing flange 111, and a first inclined surface 113 is formed on the first protrusion 112.

[0059] Correspondingly, Figure 5 The synchronizer collar 160 is shown to be disposed below the pressing flange 111. A second projection 161 is disposed on the upper surface of the synchronizer collar 160 facing the pressing flange 111, and a second inclined surface 162 is formed on the second projection 161. The second inclined surface 162 can cooperate with the first inclined surface 113 on the first projection 112. As the pressing head 110 rotates relative to the synchronizer collar 160, the first inclined surface 113 will interact with the second inclined surface 162, thereby changing the distance between the synchronizer collar 160 and the pressing flange 111.

[0060] Figure 6 A stereoscopic view of the mouthpiece 120 is shown. At least one guide rail 121 is formed on the outer surface of at least the upper portion of the mouthpiece 120, and at least one slot 163 is formed on the inner surface of the synchronization ring 160, the slot 163 cooperates with the guide rail 121, so that the synchronization ring 160 can slide on the corresponding portion of the mouthpiece 120 but will not rotate around the mouthpiece 120.

[0061] Figure 7 1 shows a stereoscopic view of the elastic member 150. The elastic member 150 includes an upper ring 151 and a lower ring 152, and at least one elastic strip 153 is connected between the upper ring 151 and the lower ring 152. As described above, Figure 7 The elastic member 150 of the structure shown can be made of plastic, thereby avoiding the problems existing in conventional metal elastic members.

[0062] Back to Figures 1 to 3 , which shows that the upper ring 151 of the elastic member 150 in the pumping device 100 of the first embodiment abuts against the synchronization ring 160, and the lower end is supported on the bottle shoulder 21 of the container 20.

[0063] When from Figure 1 When the pressing head 110 is rotated from the relaxed position shown, the pressing head 110 will rotate relative to the toothed brace 120, while the synchronizing ring 160 will remain fixed relative to the toothed brace 120 in the rotation direction due to the interaction between the guide rail 121 and the slot 163. In this way, the first inclined surface 113 and the second inclined surface 162 interact with each other, thereby pushing the synchronizing ring 160 downward away from the pressing head 110 and into the toothed brace. Figure 2In the preloaded position, since the synchronizing ring 160 is pushed downwardly away from the pressing head 110 by a distance H2, the height of the elastic member 150 is Figure 1 The H in becomes Figure 2 H1 in which H1 is smaller than H, so that the elastic member 150 is slightly loaded.

[0064] After use, the pressing head 110 can be rotated in the opposite direction to return to the Figure 1 The state shown in FIG. 1 is thereby caused to return the elastic member 150 to the relaxed state.

[0065] <Second Embodiment>

[0066] Figure 8 The pumping device 200 of the second embodiment of the present invention is shown. The structure of the second embodiment is the same as that of the first embodiment and will not be described in detail here. The following will focus on the features that are different from the first embodiment.

[0067] like Figure 8 As shown, in the pumping device 200 of the second embodiment, an elastic member 250 is included, and the elastic member 250 also includes a plurality of elastic strips 253. One end of the elastic member 250 abuts against a movable part such as a pressing head 210.

[0068] The other end of the elastic member 250 is supported on the outside of the bottom of the container 20, specifically, on the outside surface 22 of the bottom of the container 20. For example, the outside surface 22 of the bottom of the container 20 may be formed with an external thread, and the lower end of the elastic member 250 may be provided with a component with an internal thread, so that the lower end of the elastic member 250 is fixed to the outside of the bottom of the container 20 by threaded connection. Alternatively, the lower end (i.e., the fixed end) of the elastic member 250 may also be fixed to the outside of the bottom of the elastic member 250 by other means.

[0069] <Third Embodiment>

[0070] Fig. 9 The third embodiment of the pumping device 300 of the present invention is shown. The similarities between the structure of the third embodiment and the first and second embodiments will not be described in detail here, and the following will focus on the features that are different from the first and second embodiments.

[0071] like Fig. 9 As shown, the pumping device 300 includes a pressing head 310, and a piston rod 340 is connected to the pressing head 310 and moves with the pressing head 310. The movable end (upper end in the figure) of the elastic member 350 abuts against or is fixed to the piston rod 340, and the fixed end (lower end in the figure) of the elastic member 350 is fixed to the bottom inner surface of the container 20.

[0072] In this embodiment, the movable end of the elastic member 350 may also abut or be fixed on other movable components, for example, abut or be fixed on the pressing head 310 as in the first embodiment.

[0073] <Fourth Embodiment>

[0074] Fig.10 A pumping device 500 according to a fourth embodiment of the present invention is shown. The structure of the fourth embodiment similar to that of the first to third embodiments will not be described in detail here, and the following will focus on the features that are different from the first to third embodiments.

[0075] like Fig.10 As shown, the pumping device 500 includes a pressing head 510, a piston cover 540 is connected to the pressing head 510, and the movable end of the elastic member 550 abuts or is fixed to the piston rod 540. In the fifth embodiment, the fixed end of the elastic member 550 is connected to the bottle mouth 24 of the container 20.

[0076] Specifically, if Fig.11 As shown in the figure, in addition to the elastic strip 553 between the upper ring 551 and the lower buffer 552, the lower end of the elastic member 550 is also connected to at least one upwardly extending fixing strip 555. The other end of the fixing strip 555 is connected to the fixing buffer 554, and the fixing buffer 554 is fixed at the bottle mouth 24 of the container 20.

[0077] Therefore, from Fig.10 As can be seen from the cross-sectional view shown, the lower end of the elastic member 550 is in a suspended state and is retained by a fixing ring 554 fixed on the bottle mouth 24 and a fixing strip 555 extending downward from the fixing ring 554 .

[0078] <Fifth Embodiment>

[0079] Fig.12 A pumping device 600 according to a fifth embodiment of the present invention is shown. The structure of the fifth embodiment similar to that of the first to fifth embodiments will not be described in detail here, and the following will focus on the features that are different from the first to fifth embodiments.

[0080] like Fig.12 As shown, similar to the fourth embodiment, the pumping device 600 also includes a pressing head 610 , to which a piston rod 640 is connected, and a movable end of the elastic member 650 is abutted against or fixed on the piston rod 640 .

[0081] A step portion 25 is formed inside the container 20 , and a fixed end of the elastic member 650 abuts against the step portion 25 .

[0082] <Sixth Embodiment>

[0083] Figure 13-20d The sixth embodiment of the present invention is shown as a pumping device 800. The structure of the sixth embodiment is the same as that of the first to fifth embodiments and will not be described in detail here. The following will focus on the features that are different from the first to fifth embodiments.

[0084] Fig.13 and 14 1 and 2 show a front view and a perspective view of a pumping device 800 of a sixth embodiment, respectively. Fig.15 and 16 A cross-sectional view of the pumping device 800 mounted on the container 20 is shown, wherein the pumping device 800 is in a relaxed position and a preloaded position, respectively.

[0085] As shown in the figure, like the pumping device 100 of the first embodiment, the pumping device 800 of the sixth embodiment is a hand-clip type, comprising a pressing head 810 and a tooth cap 820. A flange is formed on the pressing head 810, and a user can apply force to the flange with one hand to press the pressing head 810. The pressing head 810 is connected to a piston rod 840 (see Fig.15 and 16 ), a cylinder 830 is connected to the tooth sleeve 820, and the tooth sleeve 820 is connected to the container 20, for example, fitted on the bottle mouth of the container 20. The pumping device 800 also includes an elastic member 850.

[0086] The structure of the elastic member 850 of the pumping device 800 of the sixth embodiment is Figures 18a to 18d The elastic member 850 includes an upper ring 851, a lower ring 852, and at least one, preferably a plurality of elastic strips 853 connected between the upper ring 851 and the lower ring 852. The elastic member 850 also includes a synchronous sleeve 854, which can be integrally formed on the elastic member 850, for example, integrally formed with the lower ring 852 of the elastic member 850, or can be formed separately and then fixedly mounted on the elastic member 850.

[0087] Back to Fig.15 and 16 It can be seen that, in the installed state, the lower end of the pressing head 810 is sleeved on the piston rod 840 of the elastic member 850, the upper ring 851 of the elastic member 850 abuts against the pressing head 810, and the lower ring 852 contacts the braces 820 and is supported on the container 20 via the braces 820.

[0088] Figures 19a to 19cThe cross-sectional view, stereoscopic view and top view of the elastic member 850 are shown respectively. It can be seen that a recessed portion 821 is formed on the mouthpiece 820, and the recessed portion 821 includes a guide slope 822. Correspondingly, a guide block 855 is provided below the lower ring 852 of the elastic member 850, and the guide block 855 includes a slope 857 corresponding to the guide slope 822.

[0089] Through the cooperation between the guide block 855 and the recessed portion 821 , the preloading of the elastic member 850 can be achieved, as described in detail below.

[0090] Furthermore, if Fig.18c As more clearly shown in FIG. 8 , at least one rib 856 is formed on the outer surface of the synchronous sleeve 854, and correspondingly, as shown in FIG. Figures 20a to 20d As shown in FIG. 8 , a groove 812 is formed on the inner surface of the pressing head lower ring 811 of the pressing head 810. Under the interaction between the rib 856 and the groove 812, the elastic member 850 can rotate with the pressing head 810.

[0091] Here, the setting positions of the grooves and ribs can be interchanged, which is also within the scope of the present invention, that is, ribs can be formed on the inner surface of the lower ring 811 of the pressing head, and grooves can be formed on the outer surface of the synchronous sleeve 854 accordingly.

[0092] The following will be combined Figures 15 to 17 The operating principle of the pumping device 800 according to the sixth embodiment will be described.

[0093] When shipped from the factory, the pumping device 800 is in Fig.15 In the relaxed position shown, at this time, the guide block 855 on the elastic member 850 is in the recessed portion 821 of the braces 820, so that the distance between the upper ring 851 and the lower ring 852 of the elastic member 850 is large, and the elastic member 850 is in a relaxed state.

[0094] Before operating the pumping device 800 to pump the product in the container 20, the user first rotates the pressing head 810, for example, by 90 degrees, so that the elastic member 850 rotates together. In this way, under the interaction of the guiding inclined surface 822 in the recessed portion 821 of the mouthpiece 820 and the inclined surface 857 on the guiding block 855 of the elastic member 850, the guiding block 855 climbs out of the recessed portion 821, so that the distance between the upper ring 851 and the lower ring 852 of the elastic member 850 is shortened, so that the elastic member 850 enters Fig.16 Preload position shown.

[0095] In the preloaded position, the user can press down the pressing head 810 to pump the product in the container 20 out.

[0096] After use, the pressing head 810 can be optionally rotated back to return the elastic member 850 to the relaxed position.

[0097] <Seventh Embodiment>

[0098] Fig.21 and 22 The seventh embodiment of the pumping device 900 of the present invention is shown. The structure of the seventh embodiment is similar to that of the first to sixth embodiments and will not be described in detail here. The following will focus on the features that are different from the first to sixth embodiments.

[0099] like Fig.21 As shown, the pumping device 900 of the seventh embodiment is the same as the pumping devices of the first and sixth embodiments, and is a hand-clip type, comprising a pressing head 910 and a tooth cap 920. The difference of the pumping device 900 of the seventh embodiment is that the elastic member 950 is arranged inside the pressing head 910.

[0100] Specifically, if Fig.21 As shown, the pressing head 910 has a lower sleeve 911, and the toothed sleeve 920 is formed with an upper sleeve 921. The lower sleeve 911 and the upper sleeve 921 cooperate with each other to form an internal space, and the elastic member 950 is arranged in the internal space.

[0101] Similar to the first embodiment, the elastic member 950 includes an upper ring 951, a lower ring 952 and an elastic strip 953 therebetween. Fig. 22 Back to Fig.21 , wherein the upper ring 951 of the elastic member 950 is supported on the flange on the piston rod 930. Alternatively, in an unshown implementation structure, the upper ring 951 can be supported at any appropriate position in the lower sleeve 911 of the pressing head 910, for example, on the top plate of the lower sleeve 911.

[0102] As for the lower ring 952 of the elastic member 950, Fig.21 In the structure shown, it is supported on the toothed sleeve 920, for example, on the bottom plate of the upper sleeve 921 of the toothed sleeve 920, and is thus indirectly supported on the container via the toothed sleeve 920. Alternatively, the lower ring 952 may also be directly supported on the container, for example, it may be directly supported on a convex ring formed on the inner surface of the bottle mouth of the container.

[0103] <Eighth Embodiment>

[0104] Figures 23 to 25b The eighth embodiment of the present invention is shown as a pumping device 1000. The structure of the eighth embodiment is the same as that of the first to seventh embodiments and will not be described in detail here. The following will focus on the features that are different from the first to seventh embodiments.

[0105] like Fig.23 As shown, the pumping device 1000 in the eighth embodiment is also of the hand-clip type, and, similar to the seventh embodiment, the elastic member 1050 of the pumping device 1000 is also accommodated inside the pressing head 1010, and its upper ring 1051 is supported on the pressing head 1010, or can be supported on the flange formed on the piston rod 1030 as in the ninth embodiment, and the lower ring 1052 is supported on the braces 1020.

[0106] The difference is that the two or more elastic strips 1053 included in the elastic member 1050 of the eighth embodiment are located on different planes. Fig.24a and 24b Or, in other words, each elastic strip 1053 of the elastic member 1050 is deformed in a different plane.

[0107] Fig.25a and 25b The Fig.23 The cross-sectional view of the elastic member 1050 obtained by cutting along the line AA in FIG. 1 shows the elastic member 1050 of two structures respectively. Fig.25a The cross section of the elastic strip 1053 of the elastic member 1050 shown in FIG. 1 is straight. Fig.25b The cross section of the elastic strip 1053 of the elastic member 1050 shown in FIG. 1 is arc-shaped.

[0108] The above is a description of the preferred embodiments of the present invention. Those skilled in the art may make obvious variations and modifications based on this. Among them:

[0109] In the structure shown in the figure, the elastic member comprises an upper ring and a lower ring. However, one of the upper ring and the lower ring can be omitted, and at this moment, the corresponding end of the elastic strip is directly connected to the movable part or the container.

[0110] In the first embodiment, the elastic member 150 and the synchronizing ring 160 are two components formed separately from each other, but the elastic member 150 may also be formed integrally with the synchronizing ring.

[0111] In the above description of the disclosed embodiments, the upper ring and the lower ring (or the upper end and the lower end) of the elastic member are supported or connected in the corresponding components, including the situation where the upper ring or the lower ring of the elastic member is integrally formed on the corresponding component.

[0112] In the embodiments disclosed above, the pressing head, piston rod, etc. are described as movable parts of the pumping device, while the cylinder, braces, etc. are described as fixed parts of the pumping device. For those skilled in the art, it can be known that for different types of pumping devices, other movable parts and fixed parts will also be included, and the same part may be a movable part in one type of pumping device and a fixed part in another type of pumping device. For example, the same cylinder may be both a fixed part and a movable part. Correspondingly, when the cylinder is a fixed part, the piston and the piston rod are movable parts, and when the cylinder is a movable part, the piston and the piston rod are correspondingly fixed parts.

[0113] In the above disclosed embodiments, the straw 30 is shown as an integral component. The straw can be made by injection molding, or by extrusion, blow molding, etc. In addition, the straw can also include multiple parts assembled together.

Claims

1. A pumping device having a movable part and a fixed part, wherein the movable part can reciprocate relative to the fixed part so as to dispense a product contained in a container through a straw connected to the fixed part, characterized in that: The pumping device comprises an elastic member, one end of which is connected to or supported on the movable member, and the other end of which is connected to or supported on the container; Wherein, the movable part comprises: a pressing head; and a piston rod, wherein the piston rod is connected to the pressing head; The fixing component comprises: a tooth sleeve, which is connected to the bottle mouth of the container; a cylinder, which is connected to the tooth sleeve, contained in the container and connected to the straw, and the piston rod extends to the interior of the container; Among them, one end of the elastic member abuts or is fixed on the pressing head or the piston rod, and the other end of the elastic member abuts or is fixed on one of the following positions: on the bottle shoulder of the container, on the outer surface of the bottom of the container, on the inner surface of the bottom of the container, and on the step formed inside the container.

2. The pumping device according to claim 1, characterized in that The other end of the elastic member is fixed on the bottle mouth of the container, wherein the elastic member includes an upper ring, a lower ring and at least one elastic strip extending between the upper ring and the lower ring, and at least one fixing strip extends upward from the lower ring, the fixing strip is connected upward to the fixing ring, and the fixing ring is fixed to the bottle mouth.

3. The pumping device according to claim 1 or 2, characterized in that: The pumping device further comprises a release mechanism which is switchable between a release position and a preload position, wherein a height of the elastic member when the release mechanism is in the release position is greater than a height of the elastic member when the release mechanism is in the preload position.

4. The pumping device according to claim 3, characterized in that The release mechanism comprises a synchronous sleeve, a first actuator is arranged on the pressing head, and a second actuator is arranged on the synchronous sleeve. The release mechanism switches between the release position and the preload position through the interaction between the first actuator and the second actuator.

5. The pumping device according to claim 4, characterized in that The first actuating member is a first protrusion formed on the pressing head, and a first inclined surface is formed on the first protrusion. The second actuating member is a second protrusion formed on the synchronous ring, and a second inclined surface is formed on the second protrusion. The first inclined surface matches the second inclined surface.

6. The pumping device according to claim 4, characterized in that The synchronizer ring is sleeved on the socket, wherein a narrow groove is formed on the inner surface of the synchronizer ring, and a guide rail is formed on the outer surface of the socket, and the guide rail cooperates with the narrow groove to guide the synchronizer ring to move relative to the socket along the longitudinal direction of the pumping device and prevent the synchronizer ring from rotating relative to the socket.

7. The pumping device according to claim 1, characterized in that The elastic member is made of plastic.

8. The pumping device according to claim 1, characterized in that The movable part comprises: a pressing head; and a piston rod, wherein the piston rod is connected to the pressing head, wherein the pressing head is provided with a pressing flange, and a user's finger can be buckled on the pressing flange to apply pressure to the pressing head; The fixing component comprises: a tooth sleeve, which is connected to the bottle mouth of the container; a cylinder, which is connected to the tooth sleeve, contained in the container and connected to the straw, and the piston rod extends to the interior of the container; Wherein, one end of the elastic member abuts against or is fixed on the pressing head or the piston rod, and the other end abuts against or is fixed on the braces.

9. The pumping device according to claim 8, characterized in that A guide block is provided on the elastic member, and a recessed portion is formed in the braces. The elastic member can rotate between a relaxed position and a preloaded position. In the relaxed position, the guide block is located in the recessed portion, and in the preloaded position, the guide block leaves the recessed portion, so that the distance between the upper end and the lower end of the elastic member is reduced.

10. The pumping device according to claim 8, characterized in that The elastic member is also formed with a synchronous sleeve, and the pressing head includes a pressing head lower ring which is sleeved on the synchronous sleeve. A convex rib is formed on one side of the outer surface of the synchronous sleeve and the inner surface of the lower circle of the pressing head, and a groove is formed on the other side. The convex rib and the groove cooperate with each other so that the elastic member can rotate with the pressing head.

11. The pumping device according to claim 1 or 8, characterized in that: A lower sleeve is formed at the lower part of the pressing head, an upper sleeve is formed at the upper part of the mouthpiece, the lower sleeve and the upper sleeve cooperate to form an internal space, and the elastic member is accommodated in the internal space.

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