CN113734608A

CN113734608A - Anti-opening sliding-rotating pressing pump

Info

Publication number: CN113734608A
Application number: CN202010481947.4A
Authority: CN
Inventors: 丁要武
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-12-03
Also published as: WO2021238495A1

Abstract

A pressing pump comprises a pressing head, a tooth socket, a cylinder and a cylinder cover. The pressing pump can be switched between a locking head state and a use state by rotating the pressing head, wherein the pressing head is fixedly connected with the cylinder cover in the locking head state, and the pressing head is disconnected with the cylinder cover in the use state. An anti-slip mechanism is provided between the socket and at least one of the cylinder and the cylinder head to prevent rotation of the cylinder head and the cylinder relative to the socket when the ram is rotated in a direction to switch the pressure pump to a use state. The pressing 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

Anti-opening sliding-rotating pressing pump

Technical Field

The present invention relates to a push-on pump for dispensing product from a container, and in particular to a push-on pump that is resistant to slippage during opening.

Background

In packaging containers for daily chemicals such as shampoo and shower cream, a pump is usually provided for pumping the product out of the packaging container for use.

With the development of electronic commerce, more and more products are sold from the original off-line to on-line, and after a merchant receives an order, the merchant sends the goods to the purchaser through logistics such as express delivery. This provides great convenience to the purchaser, and also puts higher demands on the packaging of the goods, particularly in terms of preventing breakage of the packaging, leakage of the product, and the like.

For a packaging container with a press pump, the pressure head is easily loosened by collision during transportation, resulting in leakage of the product. In order to avoid loosening and withdrawing the pressure head in the express transportation process, the common solution idea is to increase the opening torque of the pressure head, so that the pressure head is not easy to loosen and withdraw in the transportation process. However, this again brings with it new problems: when a purchaser receives a product and wants to rotate the pressure head and set the pressing pump to a use position, because the opening torque of the pressure head is set to be larger, if the friction force between the cylinder and the bottle opening of the container is smaller than the opening torque of the pressure head, the situation that the cylinder cover rotates along with the pressure head easily occurs, and then the cylinder is driven to rotate along with the pressure head. This may result in the ram not being opened to the use position.

Therefore, there is a need for a push pump with an improved structure that can meet the need for preventing accidental opening during transportation while at the same time avoiding the problem of being unable to open when the head is opened, as a result of the cylinder and cylinder head rotating together with the head.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems of the prior art. The invention aims to provide a pressing pump, which can prevent a cylinder cover and a cylinder from being incapable of being opened along with rotation (or sliding) of a pressure head in the process of opening the pressing pump to a using state by rotating the pressure head.

The above object of the present invention is achieved by a compression pump comprising a head, a socket, a cylinder and a cylinder head, wherein the socket, the cylinder and the cylinder head are connected together, and a piston rod is connected to the underside of the head, the piston rod extending into the interior of the cylinder, wherein the compression pump is switchable between a locking state, in which the head is fixedly connected to the cylinder head, and a use state, in which the head is disconnected from the cylinder head, by rotating the head. In the press pump, an anti-spin mechanism is provided between the socket and at least one of the cylinder and the cylinder head, and the anti-spin mechanism is configured to prevent rotation of the cylinder head and the cylinder relative to the socket when the pressing head is rotated in a direction to switch the press pump to a use state.

In the structure of the push pump, the anti-slip mechanism provided between the teeth sleeve and the cylinder/cylinder head can prevent the cylinder/cylinder head from rotating along with the push head when the push head is rotated in the opening direction, so that the anti-slip function is achieved, and the push head can be smoothly opened even when the opening torque of the push head is large.

One concrete structure of the anti-slip rotating mechanism comprises: at least one first ratchet tooth disposed on the mouthpiece; and at least one second ratchet tooth provided on at least one of the cylinder and the cylinder head, the first ratchet tooth and the second ratchet tooth being engaged with each other to prevent the cylinder and the cylinder head from rotating relative to the socket when the pressing head is rotated in a direction to switch the pressing pump to the use state.

The prevention of rotation of the cylinder and cylinder head relative to the socket in at least one direction is achieved by engagement between the first ratchet and the second ratchet.

Preferably, the first ratchet and the second ratchet may function as a one-way rotation stop, i.e., the first ratchet and the second ratchet are configured such that the second ratchet can slide past the first ratchet when the ram is rotated in a direction that sets the pump to the locked state.

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

As an additional or mentioned embodiment, 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.

Preferably, the rotation direction of the pressure head to set the pressure pump to the use state coincides with the tightening direction of the mouthpiece. Thus, the tooth socket can be further screwed when the pressure head is opened, thereby avoiding that the whole pressing pump is detached from the container in the process of rotating the pressure head.

Preferably, a rotation stop structure is provided between the cylinder and the cylinder head, the rotation stop structure preventing relative rotation between the cylinder and the cylinder head.

Drawings

There is shown in the drawings, which are incorporated herein by reference, non-limiting preferred embodiments of the present invention, the features and advantages of which will be apparent. Wherein:

fig. 1 is a sectional view of a pressing pump according to a first embodiment of the present invention, showing the pressing pump in a tapered state.

Figure 2 shows a top view of the ram.

Fig. 3 shows a perspective view of a mouthpiece of the compression pump of fig. 1.

Fig. 4 shows a perspective view of the cylinder head of the push pump of fig. 1.

Fig. 5a is a cross-sectional view taken along line a-a in fig. 1, from which the ratchet structure between the socket and the cylinder head can be seen.

Fig. 5b is a cross-sectional view taken along line a-a of fig. 1, from which an alternative ratchet arrangement between the socket and the cylinder head can be seen.

Fig. 6 is a sectional view of a pressing pump according to a second embodiment of the present invention, showing the pressing pump in a tapered state.

Fig. 7 is a perspective view of a mouthpiece of the compression pump shown in fig. 6.

Fig. 8 is a perspective view of a cylinder of the push pump shown in fig. 6.

Fig. 9 is a sectional view taken along line B-B in fig. 6, from which the ratchet structure disposed between the mouthpiece and the cylinder can be seen.

Figure 10 shows a perspective view of the mouthpiece and cylinder assembled together.

Detailed Description

In order to facilitate understanding of the present invention, specific embodiments thereof will be described in detail below with reference to the accompanying drawings. It is to be understood that only the preferred embodiment of the present invention has been shown in the drawings and should not be considered as limiting the scope of the invention. Obvious modifications, variations and equivalents will occur to those skilled in the art on the basis of the embodiments shown in the drawings, and the technical features of the different embodiments described below may be combined with each other arbitrarily without contradiction, all of which fall within the scope of the present invention.

In the following detailed description of the present invention, terms indicating directions and orientations such as "up" and "down" are used with reference to the orientation of the pressure pump shown in the drawings. It will be appreciated that the orientation of the pressure pump may vary depending on the particular application.

< first embodiment >

Fig. 1 to 5 show a pressing pump 100 according to a first embodiment of the present invention and some components thereof. As shown in a cross-sectional view of the pressing pump 100 of fig. 1, the pressing pump 100 includes a pressing head 110, a mouthpiece 120, a cylinder 130, and a cylinder head 140.

In the configuration shown in the cross-sectional view of FIG. 1, mouthpiece 120 is attached to the mouth of container 10, such as by a threaded connection. The mouthpiece 120 and the cylinder head 140 are coupled together, and the cylinder 130 and the cylinder head 140 are coupled together. The connection structure between the mouthpiece 120, the cylinder 130 and the cylinder head 140 may be, for example, a snap ring-and-groove structure, an interference fit structure, or the like. A piston rod 150 is connected to the lower end of the ram 110, the piston rod 150 extends into the cylinder, and a piston is provided on the piston rod 150 and frictionally engages the inner wall of the cylinder 130. By pressing the ram 110, the piston on the ram is reciprocated in the cylinder 130 in the up-and-down direction by the piston rod 150, thereby generating a pumping action on the product introduced into the cylinder 130.

The pump 100 can be switched between a lock state and a use state. Fig. 1 shows the compression pump 100 in a lower lock state in which the ram 110 is in a depressed position and is coupled to the cylinder head 140, such as by a threaded connection, to prevent upward movement of the ram 110. When the purchaser desires to use the product, he or she needs to switch the pump 100 to the use state, at which time the connection between the ram 110 and the cylinder 130 is released by rotating the ram 110 so that the ram 110 can move up to its upper limit of travel with the piston rod 150 ready for use. As shown in fig. 2, a rotation direction for switching the pressing pump 100 to the use state may be marked on the pressing head 110.

In this first embodiment of the invention, an anti-rotation structure is provided between the mouthpiece 120 and the cylinder head 140. Specifically, as shown in the perspective view of fig. 3, a mouthpiece sleeve 121 is formed on the top of the mouthpiece 120, and at least one, and preferably a plurality of first ratchet teeth 122 are provided on the inner surface of the mouthpiece sleeve 121 along the circumferential direction thereof. In the perspective view of the cylinder head 140 shown in fig. 4, a cylinder head inner sleeve 141 is provided at the inner side of the cylinder head 140 and depends downward from the top thereof, and 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 distributed along the circumferential direction thereof. The first ratchet teeth 122 on the mouthpiece 120 cooperate with the second ratchet teeth 142 on the cylinder head 140 such that when the ram 110 is rotated in an opening direction to transition the compression pump 100 from the locked condition to the use condition, the first and second ratchet teeth 142 engage the first ratchet teeth 122, preventing rotation of the cylinder head 140 relative to the mouthpiece 120. When the cylinder head 140 is rotated in the opposite direction, or when rotated in the direction to lock the mouthpiece 120 to the cylinder head 140, the second ratchet teeth 142 are able to slide past the first ratchet teeth 122, i.e., the rotation of the cylinder head 140 in the opposite direction is not blocked.

Fig. 5a and 5b show different embodiments of the first ratchet 122 and the second ratchet 142, respectively. In the configuration shown in FIG. 5a, the first ratchet teeth 122 and the second ratchet teeth 142 are generally tapered. In yet another exemplary configuration shown in FIG. 5b, the first ratchet teeth 122 and the second ratchet teeth 142 are in the shape of slanted tabs.

The number of the first ratchet teeth 122 and the number of the second ratchet teeth 142 may be the same or different. For example, in the exemplary configuration shown in fig. 5a and 5b, eight first ratchet teeth 122 are provided on the mouthpiece 120 and four second ratchet teeth 142 are provided on the cylinder head 140. Of course, more or less first ratchet teeth 122 and second ratchet teeth 142 may be provided as desired, for example, based on the particular dimensions of the mouthpiece 120 and cylinder head 140 of the compression pump 100.

The positions of the first ratchet 122 and the second ratchet 142 may be selected according to actual needs, as long as the first ratchet 122 and the second ratchet 142 can contact each other when they are installed. For example, in the first embodiment, the first ratchet 122 may be provided on the outer surface of the socket sleeve 121, and the second ratchet 142 may be provided on the inner surface of the cylinder head outer sleeve 143 of the cylinder head 140. Alternatively, the first ratchet 122 may be provided on both the inner surface and the outer surface of the mouthpiece sleeve 121 of the mouthpiece 120, and the second ratchet 142 may be provided 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.

In the configuration shown in the figures, disposed on mouthpiece 120 is a row of first ratchet teeth 122, and correspondingly disposed on cylinder head 140 is a row of second ratchet teeth 142. However, two or more rows of the 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 the second ratchet teeth 142 may be provided on the cylinder head 140.

Preferably, the opening direction of the ram 110 may be set to coincide with the direction in which the mouthpiece 120 is screwed onto the opening of the container 10. Thus, during rotation of the ram 110 to transition it to the in-use condition, the mouthpiece 120 is further tightened against the mouth of the container 10. In this way, it is possible to prevent the pressing pump 100 from being unscrewed from the container 10 during the setting of the pressing pump 100 to the use state by rotating the pressing head 110.

Thus, 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 socket 120 through the engagement between the first ratchet 122 and the second ratchet 142, which becomes the tightening torque of the socket 120. Thus, the cylinder head 140 is effectively prevented from rotating with the ram 110 when the ram 110 is rotated.

< second embodiment >

Fig. 6 to 10 show a pressing pump 200 according to a second embodiment of the present invention. In the following description of the second embodiment, the technical features of the second embodiment different from those of the first embodiment will be mainly described, and unless there is a contrary description in the following or conflicting 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 herein.

As shown in the sectional view of fig. 6, the pressing pump 200 includes a pressing head 210, a thread sleeve 220, a cylinder 230, and a cylinder head 240. The mouthpiece 220, cylinder 230 and cylinder head 240 are connected together. A piston rod 250 is connected to a lower side of the ram 210, and a piston is provided on the piston rod 250.

In the configuration shown in fig. 6, the push pump 200 is in its tapered state with the ram 210 in a depressed position, which is fixedly attached to the cylinder head 240 by a structure such as a threaded connection. When it is desired to place the push pump 200 in use, the ram 210 is rotated in an opening direction to disengage the ram 210 from the cylinder head 240 so that the ram 210 can be moved upwardly to its standby position.

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

The cooperating structure of the first ratchet teeth 221 and the second ratchet teeth 231 can be seen more clearly in the cross-sectional view of fig. 9. While the perspective view of figure 10 shows the mouthpiece 220 and cylinder 230 assembled together.

The first and second ratchet

teeth

221 and 231 in the second embodiment may have the same structure and number as the first and second ratchet

teeth

122 and 142 in the first embodiment.

Preferably, a rotation stop structure may be formed between the cylinder 230 and the cylinder head 240. For example, a rib-groove structure extending in the axial direction of the pressing pump 200 may be provided at the connection portion between the cylinder 230 and the cylinder head 240. Alternatively, in another exemplary manner, the cylinder 230 may be fixedly coupled to the cylinder head 240 by welding. In this way, relative rotation between the cylinder 230 and the cylinder head 240 is prevented.

As with the first embodiment, the opening direction of the ram 210 is also preferably set to coincide with the direction in which the mouthpiece 220 is screwed onto the opening of the container 10.

Thus, when the ram 210 is rotated in the opening direction, the torque of the ram 210 is transmitted to the cylinder head 240, the cylinder head 240 further transmits the torque to the cylinder 230 through the rotation stop structure, and the cylinder 230 transmits the torque to the socket 220 through the engagement between the first ratchet 221 and the second ratchet 231, thereby becoming the tightening torque of the socket 220.

Additionally, a ratchet mechanism may be provided both between the mouthpiece 220 and the cylinder 230 and between the mouthpiece 220 and the cylinder head 240. The same applies to the first embodiment.

Claims

1. A pressing pump comprises a pressing head, a tooth socket, a cylinder and a cylinder cover, wherein, the tooth socket, the cylinder and the cylinder cover are connected together, a piston rod is connected to the lower side of the pressure head and extends into the cylinder, wherein the pressing pump can be switched between a locking state and a using state by rotating the pressing head, in the lock head state, the pressure head is fixedly connected with the cylinder cover, and in the use state, the pressure head is disconnected with the cylinder cover, characterized in that an anti-spin mechanism is provided between the mouthpiece and at least one of the cylinder and the cylinder head, the anti-spin mechanism being arranged, when the pressure head rotates in a direction to switch the pressure pump to the use state, the anti-spin mechanism prevents rotation of the cylinder head and the cylinder relative to the mouthpiece.

2. The compression pump as set forth in claim 1, wherein the anti-slip mechanism comprises: at least one first ratchet tooth disposed on the mouthpiece; and at least one second ratchet tooth provided on at least one of the cylinder and the cylinder head, the first ratchet tooth and the second ratchet tooth being engaged with each other to prevent the cylinder and the cylinder head from rotating relative to the socket when the ram is rotated in a direction to switch the pressure pump to the use state.

3. The push pump of claim 2, wherein the first ratchet tooth and the second ratchet tooth are configured such that the second ratchet tooth can slide past the first ratchet tooth when the ram is rotated in a direction that sets the push pump to the locked state.

4. The compression pump of claim 2, wherein the first ratchet teeth are circumferentially arranged on an inner surface of a mouthpiece sleeve at a top of the mouthpiece, and the second ratchet teeth are circumferentially arranged on an outer surface of an inner sleeve of the cylinder head; and/or

The first ratchet teeth are circumferentially arranged on an outer surface of a mouthpiece sleeve at a top of the mouthpiece, and the second ratchet teeth are circumferentially arranged on an inner surface of an outer sleeve of the cylinder head.

5. The compression pump of claim 2, wherein the first ratchet teeth are circumferentially disposed on an inner surface of the mouthpiece and the second ratchet teeth are circumferentially disposed on an outer surface of the cylinder.

6. The compression pump as claimed in claim 1, wherein a rotational direction of the pressing head to set the compression pump to the use state coincides with a screwing direction of the mouthpiece.

7. The compression pump of claim 1, wherein a rotation stop structure is disposed between the cylinder and the cylinder head, the rotation stop structure preventing relative rotation between the cylinder and the cylinder head.