Anti-slip push pump

Abstract

A press pump includes a pressure head, a toothed sleeve, a cylinder and a cylinder cover. The press pump can be switched between a lock state and a use state by rotating the pressure head. In the lock state, the pressure head is fixedly connected to the cylinder cover, and in the use state, the pressure head is disconnected from the cylinder cover. An anti-slip mechanism is provided between the toothed sleeve and at least one of the cylinder and the cylinder cover, so that when the pressure head rotates in a direction for switching the press pump to the use state, the cylinder cover and the cylinder are prevented from rotating relative to the toothed sleeve. The press pump can prevent the cylinder cover and the cylinder from rotating together with the pressure head, thereby ensuring that the pressure head can be opened.

Description

Technical Field

[0001] The present invention relates to a press pump for dispensing a product from a container, and in particular to a press pump capable of preventing slipping during opening. Background Art

[0002] A press pump is usually installed on the packaging container of daily chemical products such as shampoo and shower gel to pump the product out of the packaging container for use.

[0003] With the development of e-commerce, more and more products have been sold online instead of offline. After receiving the order, the merchant will send the goods to the buyer through express delivery and other logistics. This provides great convenience for the buyer, but also puts forward higher requirements for the packaging of the goods, especially in terms of preventing the packaging from being damaged and the product from leaking.

[0004] For packaging containers with a press pump, the pressure head is prone to loosening due to collision during transportation, causing product leakage. In order to prevent the pressure head from loosening during express delivery, the usual solution is to increase the opening torque of the pressure head so that the pressure head is not easy to loosen during transportation. However, this will bring new problems: when the buyer receives the product and wants to rotate the pressure head and set the press pump to the use position, since the opening torque of the pressure head is set to a relatively large value, if the friction between the cylinder and the bottle mouth of the container is less than the opening torque of the pressure head, it is easy for the cylinder head to rotate with the pressure head, thereby driving the cylinder to rotate together. This will make it impossible to open the pressure head to the use position.

[0005] Therefore, there is a need for a compression pump with an improved structure, which can meet the need to prevent accidental opening during transportation, while avoiding the problem of being unable to open due to the cylinder and the cylinder cover rotating with the pressure head when the pressure head is opened. Summary of the invention

[0006] The present invention is made to solve the problems of the prior art mentioned above. The purpose of the present invention is to provide a press pump, which has a structure that can prevent the cylinder head and the cylinder from being unable to open due to the rotation (or "slipping") of the pressure head when the pressure head is rotated to open the pressure pump to the use state.

[0007] The above-mentioned object of the present invention is achieved by a press pump, which includes a pressure head, a toothed sleeve, a cylinder and a cylinder head, wherein the toothed sleeve, the cylinder and the cylinder head are connected together, a piston rod is connected to the lower side of the pressure head, and the piston rod extends into the interior of the cylinder, wherein the press pump can be switched between a locking state and a use state by rotating the pressure head, in which the pressure head is fixedly connected to the cylinder head, and in which the pressure head is disconnected from the cylinder head in the use state. In the press pump, an anti-slip mechanism is provided between the toothed sleeve and at least one of the cylinder and the cylinder head, and the anti-slip mechanism is arranged so that when the pressure head rotates in the direction of switching the press pump to the use state, the anti-slip mechanism prevents the cylinder head and the cylinder from rotating relative to the toothed sleeve.

[0008] Therefore, in the structure of the above-mentioned pressing pump, by providing an anti-slip mechanism between the braces and the cylinder / cylinder head, the cylinder / cylinder head can be prevented from rotating along with the pressure head when the pressure head is rotated along the opening direction, thereby playing an anti-slip role. Even when the opening torque of the pressure head is large, the pressure head can be opened smoothly.

[0009] A specific structure of the anti-slip mechanism includes: at least one first ratchet arranged on the braces; and at least one second ratchet arranged on at least one of the cylinder and the cylinder head. When the pressure head rotates in the direction of converting the pressing pump to the use state, the first ratchet and the second ratchet engage with each other to prevent the cylinder and the cylinder head from rotating relative to the braces.

[0010] The engagement between the first ratchet teeth and the second ratchet teeth prevents the cylinder and the cylinder head from rotating relative to the toothed sleeve in at least one direction.

[0011] Preferably, the first ratchet and the second ratchet can play a one-way anti-rotation role, that is, the first ratchet and the second ratchet are arranged so that when the pressure head rotates in the direction of setting the pressing pump to the locking state, the second ratchet can slide over the first ratchet.

[0012] Further specifically, the first ratchet teeth are arranged circumferentially on the inner surface of the socket sleeve at the top of the socket, and the second ratchet teeth are arranged circumferentially on the outer surface of the inner sleeve of the cylinder head; and / or the first ratchet teeth are arranged circumferentially on the outer surface of the socket sleeve at the top of the socket, and the second ratchet teeth are arranged circumferentially on the inner surface of the outer sleeve of the cylinder head.

[0013] As an additional or mentioned embodiment, the first ratchet teeth are arranged circumferentially on the inner surface of the toothed sleeve, and the second ratchet teeth are arranged circumferentially on the outer surface of the cylinder.

[0014] Preferably, the rotation direction of the pressure head to set the compression pump to the use state is consistent with the tightening direction of the mouthpiece. In this way, when the pressure head is opened, the mouthpiece will be further tightened, thereby avoiding the compression pump being removed from the container as a whole during the rotation of the pressure head.

[0015] Preferably, a rotation-stopping structure is provided between the cylinder and the cylinder head, and the rotation-stopping structure prevents relative rotation between the cylinder and the cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 FIG. 1 is a cross-sectional view of the pressing pump according to the first embodiment of the present invention, showing that the pressing pump is in a locked state.

[0018] Figure 2 A top view of the indenter is shown.

[0019] Figure 3 Shows Figure 1 A stereoscopic view of a mouthpiece with a compression pump.

[0020] Figure 4 Shows Figure 1 A three-dimensional view of the cylinder head of the compression pump.

[0021] Figure 5a is along Figure 1 The cross-sectional view obtained along line AA in FIG. 1 shows the ratchet structure between the toothed sleeve and the cylinder head.

[0022] Figure 5b is along Figure 1 A cross-sectional view taken along line AA in FIG. 1 shows another ratchet structure between the toothed sleeve and the cylinder head.

[0023] Figure 6 FIG. 4 is a cross-sectional view of a press pump according to a second embodiment of the present invention, showing that the press pump is in a locked state.

[0024] Figure 7 yes Figure 6 A stereoscopic view of the mouthpiece of the compression pump is shown.

[0025] Figure 8 yes Figure 6 A perspective view of the cylinder of the compression pump is shown.

[0026] Fig. 9 It is along Figure 6 A cross-sectional view taken along line BB in FIG. 1 shows a ratchet structure disposed between the toothed sleeve and the cylinder.

[0027] Fig.10 A perspective view of the mouthpiece and cylinder assembled together is shown. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the drawings show only preferred embodiments of the present invention, which should not be construed as limiting 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 of the different embodiments described below can be arbitrarily combined with each other without contradiction, and these all fall within the scope of the present invention.

[0029] In the following detailed description of the present invention, the terms such as "upper" and "lower" used to indicate direction and orientation are based on the orientation of the compression pump shown in the figure. It should be understood that the orientation of the compression pump may vary depending on the specific application.

[0030] <First Embodiment>

[0031] Figure 1 5 show a first embodiment of the present invention, the compression pump 100 and some of its components. Figure 1 As shown in the cross-sectional view of the pressing pump 100 , the pressing pump 100 includes a pressure head 110 , a toothed sleeve 120 , a cylinder 130 and a cylinder head 140 .

[0032] exist Figure 1 In the structure shown in the cross-sectional view of , the tooth sleeve 120 is connected to the bottle mouth of the container 10, for example, by a threaded connection. The tooth sleeve 120 and the cylinder head 140 are connected together, and the cylinder 130 and the cylinder head 140 are connected together. The connection structure between the tooth sleeve 120, the cylinder 130 and the cylinder head 140 can be, for example, a clamping ring-slot structure, an interference fit structure, etc. The lower end of the pressure head 110 is connected with a piston rod 150, and the piston rod 150 extends into the interior of the cylinder, and a piston is arranged on the piston rod 150, and the piston is frictionally matched with the inner wall of the cylinder 130. By pressing the pressure head 110, the piston on the piston rod 150 reciprocates in the up and down directions in the cylinder 130 through the piston rod 150, thereby producing a pumping effect on the product entering the cylinder 130.

[0033] The pressing pump 100 can be switched between a locking state and a use state. Figure 1The pump 100 is shown in the lower lock state, in which the pressure head 110 is in the downward position and is connected to the cylinder cover 140 by means of threaded connection, etc., to prevent the pressure head 110 from moving upward. When the purchaser wants to use the product, the pump 100 needs to be switched to the use state. At this time, the pressure head 110 is rotated to release the connection between the pressure head 110 and the cylinder 130, so that the pressure head 110 can move upward with the piston rod 150 to its upper stop position for use. Figure 2 As shown, the rotation direction for switching the compression pump 100 to the use state can be marked on the compression head 110 .

[0034] In the first embodiment of the present invention, an anti-rotation structure is provided between the toothed sleeve 120 and the cylinder head 140. Specifically, Figure 3 As shown in the stereoscopic diagram in FIG, a tooth sleeve 121 is formed on the top of the tooth sleeve 120, and the inner surface of the tooth sleeve 121 is provided with at least one, preferably a plurality of first ratchet teeth 122 distributed along the circumference thereof. Figure 4 The three-dimensional view of the cylinder head 140 shown shows that a cylinder head inner sleeve 141 is provided on the inner side of the cylinder head 140 and is suspended downward from the top thereof. At least one, preferably a plurality of second ratchet teeth 142 are provided on the outer surface of the cylinder head inner sleeve 141 and are distributed along its circumference. The first ratchet teeth 122 on the toothed sleeve 120 cooperate with the second ratchet teeth 142 on the cylinder head 140, so that when the pressure head 110 rotates in the opening direction to convert the pressing pump 100 from the locked state to the use state, the first ratchet teeth and the second ratchet teeth 142 are engaged with the first ratchet teeth 122 to prevent the cylinder head 140 from rotating relative to the toothed sleeve 120. When the cylinder head 140 rotates in the opposite direction, or when it rotates in the direction of locking the toothed sleeve 120 to the cylinder head 140, the second ratchet teeth 142 can slide over the first ratchet teeth 122, that is, the rotation of the cylinder head 140 in the opposite direction is not blocked.

[0035] Figure 5a and 5b Different specific implementation structures of the first ratchet 122 and the second ratchet 142 are shown respectively. Figure 5a In the structure shown, the first ratchet tooth 122 and the second ratchet tooth 142 are substantially conical. Figure 5b In another exemplary structure shown, the first ratchet tooth 122 and the second ratchet tooth 142 are in the shape of inclined protrusions.

[0036] The number of the first ratchet teeth 122 and the number of the second ratchet teeth 142 may be the same or different. Figure 5a and 5bIn the exemplary structure shown, eight first ratchet teeth 122 are provided on the mouthpiece 120, and four second ratchet teeth 142 are provided on the cylinder cover 140. Of course, more or fewer first ratchet teeth 122 and second ratchet teeth 142 may be provided according to actual needs, for example, based on the specific sizes of the mouthpiece 120 and the cylinder cover 140 of the pressing pump 100.

[0037] The arrangement positions of the first ratchet teeth 122 and the second ratchet teeth 142 can also be selected according to actual needs, as long as the first ratchet teeth 122 and the second ratchet teeth 142 can contact each other when installed. For example, in the first embodiment, the first ratchet teeth 122 can be arranged on the outer surface of the toothed sleeve 121, and the second ratchet teeth 142 can be arranged on the inner surface of the cylinder head outer sleeve 143 of the cylinder head 140. Alternatively, the first ratchet teeth 122 can be arranged on both the inner surface and the outer surface of the toothed sleeve 121 of the toothed sleeve 120, and the second ratchet teeth 142 can be arranged on both the inner surface of the cylinder head outer sleeve 143 of the cylinder head 140 and the outer surface of the cylinder head inner sleeve 141.

[0038] In the structure shown in the figure, a row of first ratchet teeth 122 is provided on the mouthpiece 120, and a row of second ratchet teeth 142 is provided on the cylinder head 140 accordingly. However, two or more rows of first ratchet teeth 122 may be provided on the mouthpiece 120 along the axial direction of the pressing pump 100, and correspondingly, two or more rows of second ratchet teeth 142 of a corresponding number may also be provided on the cylinder head 140.

[0039] Preferably, the opening direction of the pressure head 110 can be set to be consistent with the direction in which the toothed cap 120 is screwed onto the opening of the container 10. In this way, during the process of rotating the pressure head 110 to switch it to the use state, the toothed cap 120 is further screwed relative to the bottle mouth of the container 10. In this way, it can be avoided that the pressing pump 100 is screwed off from the container 10 during the process of rotating the pressure head 110 to set the pressing pump 100 to the use state.

[0040] In this way, when the ram 110 is rotated in the opening direction, the torque applied to the ram 110 is transmitted to the cylinder head 140, and the cylinder head 140 transmits the torque to the toothed sleeve 120 through the meshing between the first ratchet teeth 122 and the second ratchet teeth 142, which becomes the tightening torque of the toothed sleeve 120. Therefore, when the ram 110 is rotated, the cylinder head 140 is effectively prevented from rotating with the ram 110.

[0041] <Second Embodiment>

[0042] Figures 6 to 10A pressing pump 200 according to a second embodiment of the present invention is shown. In the following description of the second embodiment, the technical features of the second embodiment that are different from the first embodiment will be mainly described. Unless there is a contrary description in the following content or there is a conflict with other technical features, the features described in the first embodiment are also applicable to the second embodiment and will not be described in detail here.

[0043] like Figure 6 As shown in the cross-sectional view in FIG, the pressing pump 200 includes a pressure head 210, a toothed sleeve 220, a cylinder 230 and a cylinder head 240. The toothed sleeve 220, the cylinder 230 and the cylinder head 240 are connected together. A piston rod 250 is connected to the lower side of the pressure head 210, and a piston is arranged on the piston rod 250.

[0044] exist Figure 6 In the illustrated structure, the press pump 200 is in its locked state, wherein the press head 210 is in a downwardly pressed position and is fixedly connected to the cylinder head 240 by a structure such as a threaded connection. When the press pump 200 needs to be set to a use state, the press head 210 is rotated in an opening direction to disengage the press head 210 from the cylinder head 240, so that the press head 210 can move upward to its standby position.

[0045] In the second embodiment, an anti-rotation structure is provided between the mouthpiece 220 and the cylinder 230. Specifically, Figure 7 As shown in , at least one, preferably a plurality of first ratchet teeth 221 are formed on the inner surface of the mouthpiece 220, and the first ratchet teeth 221 are arranged circumferentially on the inner surface of the mouthpiece 220. Correspondingly, as Figure 8 As shown in FIG. 1 , at least one, preferably a plurality of second ratchet teeth 231 are formed on the outer surface of the cylinder 230 and are arranged along the circumference of the outer surface of the cylinder 230 .

[0046] The structure in which the first ratchet teeth 221 and the second ratchet teeth 231 cooperate with each other is Fig. 9 This can be seen more clearly in the cross-sectional view shown. Fig.10 The stereoscopic view of FIG. 2 shows a stereoscopic view of the mouthpiece 220 and the cylinder 230 assembled together.

[0047] The structures and numbers of the first ratchet teeth 221 and the second ratchet teeth 231 in the second embodiment may be the same as those of the first ratchet teeth 122 and the second ratchet teeth 142 in the first embodiment.

[0048] Preferably, a rotation-stopping structure may be formed between the cylinder 230 and the cylinder head 240. For example, a rib-groove structure extending along the axis direction of the pressing pump 200 may be provided at the connection between the cylinder 230 and the cylinder head 240. Alternatively, in another exemplary embodiment, the cylinder 230 may be fixedly connected to the cylinder head 240 by welding. In this way, relative rotation between the cylinder 230 and the cylinder head 240 is prevented.

[0049] Similar to the first embodiment, the opening direction of the pressing head 210 is preferably configured to be consistent with the direction in which the mouthpiece 220 is screwed onto the opening of the container 10 .

[0050] In this way, when the pressure head 210 is rotated in the opening direction, the torque of the rotating pressure head 210 will be transmitted to the cylinder head 240, and the cylinder head 240 will then transmit the torque to the cylinder 230 through the anti-rotation structure. The cylinder 230 will transmit the torque to the braces 220 through the engagement between the first ratchet 221 and the second ratchet 231, which becomes the tightening torque of the braces 220.

[0051] In addition, ratchet mechanisms may be provided between the toothed sleeve 220 and the cylinder 230 and between the toothed sleeve 220 and the cylinder head 240. This also applies to the first embodiment.

Claims

1. A compression pump, comprising a pressure head, a tooth sleeve, a cylinder and a cylinder head, wherein: The braces, the cylinder and the cylinder head are connected together, and a piston rod is connected to the lower side of the pressure head, and the piston rod extends into the interior of the cylinder, wherein the pressure pump can be switched between a locked state and a use state by rotating the pressure head, in the locked state, the pressure head is fixedly connected to the cylinder head, and in the use state, the pressure head is disconnected from the cylinder head, and is characterized in that an anti-slip mechanism is provided between the braces and at least one of the cylinder and the cylinder head, and the anti-slip mechanism is configured such that when the pressure head rotates in the direction of switching the pressure pump to the use state, the anti-slip mechanism prevents the cylinder head and the cylinder from rotating relative to the braces.

2. The pressing pump according to claim 1, characterized in that: The anti-slip mechanism includes: at least one first ratchet arranged on the braces; and at least one second ratchet arranged on at least one of the cylinder and the cylinder head. When the pressure head rotates in the direction of converting the pressing pump to the use state, the first ratchet and the second ratchet engage with each other to prevent the cylinder and the cylinder head from rotating relative to the braces.

3. The pressing pump according to claim 2, characterized in that: The first ratchet teeth and the second ratchet teeth are arranged such that when the pressing head rotates in a direction for setting the pressing pump to the locking state, the second ratchet teeth can slide over the first ratchet teeth.

4. The pressing pump according to claim 2, characterized in that: The first ratchet teeth are arranged circumferentially on the inner surface of the toothed sleeve at the top of the toothed sleeve, and the second ratchet teeth are arranged circumferentially on the outer surface of the inner sleeve of the cylinder head; and / or The first ratchet teeth are arranged circumferentially on the outer surface of a toothed sleeve at the top of the toothed sleeve, and the second ratchet teeth are arranged circumferentially on the inner surface of the outer sleeve of the cylinder head.

5. The pressing pump according to claim 2, characterized in that: The first ratchet teeth are arranged circumferentially on the inner surface of the mouthpiece, and the second ratchet teeth are arranged circumferentially on the outer surface of the cylinder.

6. The pressing pump according to claim 1, wherein: The rotation direction of the pressure head for setting the pressing pump to the use state is consistent with the tightening direction of the braces.

7. The pressing pump according to claim 1, wherein: A rotation-stopping structure is provided between the cylinder and the cylinder head, and the rotation-stopping structure prevents relative rotation between the cylinder and the cylinder head.

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