CN115123671A

CN115123671A - Pressing pump with loosening mechanism

Info

Publication number: CN115123671A
Application number: CN202110319411.7A
Authority: CN
Inventors: 丁要武
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-09-30
Also published as: WO2022199355A1

Abstract

A pressing pump comprises a movable part and a fixed part, wherein an elastic resetting mechanism accommodating cavity is formed between the movable part and the fixed part, and an elastic resetting mechanism is accommodated in the elastic resetting mechanism accommodating cavity. The pressing pump further comprises a loosening mechanism, wherein the loosening mechanism can be removably clamped between the movable part and the fixed part, when the loosening mechanism is not clamped between the movable part and the fixed part, the accommodating cavity of the elastic resetting mechanism has a first height, and when the loosening mechanism is clamped between the movable part and the fixed part, the accommodating cavity of the elastic resetting mechanism has a second height, wherein the first height is smaller than the second height. The pressing pump with the structure can prevent or slow down the elastic force attenuation of the elastic resetting mechanism.

Description

Pressing pump with loosening mechanism

Technical Field

The present invention relates to a pump, and more particularly, to a pump having a plastic spring.

Background

Push pumps are widely used in fields such as daily chemicals, food products, medical products, etc. for pumping out a product contained in a container for use. The pressing pump is generally mainly made of plastic, and accessories such as metal springs, glass beads and the like are also included in the pressing pump so as to form an elastic reset structure, a one-way valve and the like of the pressing pump.

With the improvement of the requirement for environmental protection, the demand for recycling the pressing pump is increasing. The conventional pressing pump includes accessories such as metal springs and glass beads, which adversely affect recycling of the pressing pump, for example, the pressing pump needs to be disassembled during recycling, and the metal springs and glass beads are separated from the plastic body of the pressing pump for classified recycling, which increases the workload of recycling the pressing pump and increases the recycling cost of the pressing pump.

For this purpose, all-plastic push pumps have been proposed in which the elastic return structure and the non-return valve are also made of plastic, in particular in which a plastic spring is used. However, in practical applications, it is found that the all-plastic pressing pump has the problem that the plastic spring yields after long-term pre-compression, so that the elastic force of the plastic spring is reduced, the pumping capacity of the pressing pump is reduced, and even the pumping capacity is lost.

Therefore, there is a need for an improved structure of a push pump to overcome the above technical problems of the prior art push pump

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art. The invention aims to provide a pressing pump with an improved structure, which can prevent or at least slow down the elastic force attenuation of an elastic reset mechanism, so that the pressing pump can effectively rebound and reset in the using process, and the output is ensured to be stable.

The invention relates to a pressing pump with a loosening mechanism, which comprises a movable part and a fixed part, wherein an elastic resetting mechanism accommodating cavity is formed between the movable part and the fixed part, and an elastic resetting mechanism is accommodated in the elastic resetting mechanism accommodating cavity. The pressing pump further comprises a loosening mechanism, wherein the loosening mechanism can be removably clamped between the movable part and the fixed part, when the loosening mechanism is not clamped between the movable part and the fixed part, the accommodating cavity of the elastic resetting mechanism has a first height, and when the loosening mechanism is clamped between the movable part and the fixed part, the accommodating cavity of the elastic resetting mechanism has a second height, wherein the first height is smaller than the second height.

In the pressing pump with the structure, the elastic resetting mechanism accommodating cavity in the pressing pump in the upper standby state can have larger height through the arrangement of the loosening mechanism, so that the elastic resetting mechanism can be more recovered to the loosening state, the elastic resetting mechanism can be prevented from yielding and deforming due to long-term pressure, and the elastic force attenuation of the elastic resetting mechanism is prevented or slowed down, particularly under the condition that the elastic resetting mechanism is made of plastic.

Thus, a preferred example of a resilient return mechanism is made of plastic.

In one particular arrangement, the release mechanism comprises a body including two ends and an arcuate portion extending from one end to the other, with an opening formed between the two ends, such that the body is in the shape of an open ring.

Preferably, the outer surface of the body of the loosening mechanism is formed with a textured portion. The textured portion helps to grip the body during operation to prevent slippage.

Alternatively, the release mechanism may include a grip portion extending outwardly from an outer surface of the body at a location of the body that is 180 ° apart from the opening and opposite one another. Preferably, the gripping portion may be Y-shaped and/or textured on the gripping portion.

Preferably, a guide portion is formed on at least one of upper and lower sides of at least one of the two end portions of the loosening mechanism body. The guide helps to smoothly snap the release mechanism between the movable and stationary parts. For example, the guide portion may be formed as a slope.

Preferably, the release mechanism is configured such that the second height is greater than the initial height of the resilient return mechanism when the release mechanism is snapped between the movable portion and the fixed portion. In this way, after the release mechanism has been snapped in, a gap is left between the upper end of the elastic return mechanism and the movable part, which gap, on the one hand, makes room for sufficient recovery of the elastic return mechanism and, on the other hand, ensures that the elastic return mechanism is in a relaxed state free of pressure in the upper, inactive state of the compression pump.

Further, the above-mentioned movable portion may specifically include a pressure head and a piston rod, and the fixed portion may specifically include a mouthpiece and a cylinder, wherein the mouthpiece is connected with the cylinder, one end of the piston rod is connected to the pressure head, a piston is provided near the other end of the piston rod and extends into the cylinder, and the release mechanism can be clamped between the pressure head and the mouthpiece.

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. 1a is a perspective view of a pressing pump according to a first embodiment of the present invention.

FIG. 1b is a cross-sectional view of the compression pump shown in FIG. 1a showing the release mechanism not yet captured between the ram and mouthpiece.

FIG. 1c is another cross-sectional view of the compression pump shown in FIG. 1a showing the release mechanism snapped between the compression head and mouthpiece.

Fig. 2a is a side view of the release mechanism of the pressing pump shown in fig. 1 a.

Fig. 2b is a top view of the release mechanism of fig. 2 a.

Fig. 2c is a perspective view of the release mechanism of fig. 2 a.

Fig. 3 is a perspective view of another exemplary configuration of a loosening mechanism.

FIG. 4a is a cross-sectional view of a compression pump according to a second embodiment of the present invention showing the release mechanism not yet engaged between the indenter and mouthpiece.

FIG. 4b is another cross-sectional view of the compression pump of FIG. 4a showing the release mechanism snapped between the compression head and mouthpiece.

Detailed Description

In order to facilitate understanding of the present invention, a detailed description will be given of a specific embodiment of the push pump of the present invention 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 general orientation of the pressing pump shown in the drawings in a use state, and it is understood that the orientation of the pressing pump may be changed in cases such as transportation, storage, and the like.

< first embodiment >

Fig. 1a to 3 show a pressing pump 100 according to a first embodiment of the present invention. Fig. 1a shows a perspective view of the pressing pump 100, fig. 1b shows a sectional view of the pressing pump 100 before the release mechanism 160 is inserted, and fig. 1c shows a sectional view of the pressing pump 100 with the release mechanism 160 inserted.

As shown in the drawings, the pressing pump 100 includes a pressing head 110, a mouthpiece 120 and a cylinder 130, the mouthpiece 120 is connected to the cylinder 130, a piston rod 140 is connected to a lower portion of the pressing head 110, one end (upper end in the drawing) of the piston rod 140 is connected to the pressing head 110, and a piston is disposed near the other end (lower end in the drawing) and extends into the cylinder 130.

Ram 110 and piston rod 140 are capable of moving in an up and down direction relative to mouthpiece 120 and cylinder 130 and define a resilient return mechanism receiving cavity 111 between ram 110 and mouthpiece 120. The elastic restoring mechanism 150 is accommodated in the elastic restoring mechanism accommodating chamber 111 as shown in the figure, wherein one end (lower end in the figure) of the elastic restoring mechanism 150 is supported on the mouthpiece 120 or the cylinder 130, and the other end is fixed on the ram 110 or can contact the ram 110.

Preferably, a synchronous rotation mechanism is provided between the piston rod 140 and the elastic return mechanism 150. Specifically, as shown, a rib 141 is disposed along the vertical direction on the piston rod 140, and a corresponding groove (not shown) is disposed in the elastic return mechanism 150, and the groove is matched with the rib 141 on the piston rod 140, so that when the ram 110 and the piston rod 140 are rotated, the elastic return mechanism 150 can be rotated synchronously.

In the present invention, as shown in fig. 1a, the pressure pump 100 further includes a release mechanism 160, and the release mechanism 160 can be snapped between the pressure head 110 and the mouthpiece 120 to adjust the height of the elastic return mechanism accommodating chamber 111 formed between the pressure head 110 and the mouthpiece 120.

Fig. 2 a-2 c show a side view, a top view and a perspective view, respectively, of an exemplary structure of the loosening mechanism 160. The loosening mechanism 160 includes a body 161, the body 161 being in the shape of an open ring, specifically, the body 161 includes two end portions 162, and the body 161 further includes an arc-shaped portion extending from one end portion 162 to the other end portion 162, and an opening 163 is formed between the two end portions 162. As shown, a textured portion 164 is formed on the outer surface of the body 161. when the user grips the release mechanism 160, the textured portion 164 provides increased friction to prevent slippage during operation. An example of the texture 164 is a stripe in the up-down direction shown in fig. 2a to 2 c. In addition, the texture 164 may take other forms, such as forming a roughness on the outer surface of the body 161.

Preferably, as shown, guides 165 are formed at both ends 162 of the loosening mechanism 160 to facilitate the smooth snapping of the loosening mechanism 160 into the neck of the pump 100, or between the indenter 110 and mouthpiece 120. The guide 165 is preferably a slope formed on at least one of upper and lower sides of the end 162 of the loosening mechanism 160.

Fig. 3 illustrates another exemplary configuration of the release mechanism 160. Wherein the release mechanism 160 further comprises a grip 166, the grip 166 extending outwardly from an outer surface of the body 161. Preferably, as shown in fig. 3, the gripping portions 166 are formed at positions opposite to each other at 180 ° from the opening 163. The grip portion 166 may be formed in a Y-shape and a textured portion may also be formed on the grip portion 166 to facilitate manipulation by the user.

The specific operation of the release mechanism 160 will be described in detail below with reference to fig. 1b and 1 c.

After the product in the container (not shown) is pumped by pressing the pump 100, the user removes the pressing force applied to the pressing head 110, so that the elastic force of the elastic restoring mechanism 150 causes the pressing head 110 and the piston rod 140 connected thereto to move upward to restore and restore to the state shown in fig. 1a, in which the height of the elastic restoring mechanism accommodating chamber 111 is restored to the first height H1 by the resilient force of the elastic restoring mechanism 150. In the case where the resilient return mechanism 150 is made of plastic, for example, the first height H1 will typically be less than the original height of the resilient return mechanism 150 itself. And at this time, the release mechanism 160 is not snapped into the neck of the pump 100.

Next, as shown in fig. 1b, the releasing mechanism 160 is snapped into the neck of the pump 100, i.e. between the indenter 110 and the mouthpiece 120, thereby adjusting the height of the elastic return mechanism accommodating chamber 111 to a second height H2, wherein the second height H2 is greater than the first height H1, and the second height H2 may be less than the original height of the elastic return mechanism 150 itself, or equal to the original height of the elastic return mechanism 150 itself. In this manner, the resilient return mechanism 150 is set to a relatively relaxed state. Also, the release mechanism 160 maintains the elastic return mechanism accommodating chamber 111 at the second height H2, so that the elastic return mechanism 150 maintains the released state during standby, thereby preventing the elastic force of the elastic return mechanism 150 from being attenuated.

< second embodiment >

Fig. 4a and 4b show a pressing pump 200 of 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.

In fig. 4a it is shown that after the pressing force has been removed, the pressing pump 200 returns to its upper standby position under the influence of the elastic restoring force of the elastic restoring mechanism 250, but the releasing mechanism 260 has not yet snapped into the neck of the pressing pump 200. At this time, the height of the elastic return mechanism accommodating chamber 211 is the first height H1.

Figure 4b shows the release mechanism 260 snapped between the ram 210 and mouthpiece 220 to increase the height of the resilient return mechanism receiving cavity 211 to a second height H2. In a second embodiment, the second height H2 may be greater than the original height of the resilient return mechanism 250 itself, so that in the event of snapping the release mechanism 260 in place, as shown in fig. 4b, there is a gap of height H between the upper end of the resilient return mechanism 250 and the ram 210. Thus, through this gap, sufficient space is provided for the resilient return mechanism 250 to return to its original height as much as possible. Moreover, the presence of the gap ensures that the elastic return mechanism 250 is not subjected to pressure in the upper standby state of the pressing pump 200, thereby reducing or avoiding yielding deformation of the elastic return mechanism 250.

Claims

1. A pressing pump comprises a movable part and a fixed part, an elastic resetting mechanism accommodating cavity is formed between the movable part and the fixed part, an elastic resetting mechanism is accommodated in the elastic resetting mechanism accommodating cavity, the elastic resetting mechanism is made of plastic,

the pressing pump is characterized by further comprising a releasing mechanism, wherein the releasing mechanism can be removably clamped between the movable part and the fixed part, the elastic resetting mechanism accommodating cavity is provided with a first height when the releasing mechanism is not clamped between the movable part and the fixed part, the elastic resetting mechanism accommodating cavity is provided with a second height when the releasing mechanism is clamped between the movable part and the fixed part, and the first height is smaller than the second height.

2. The compression pump of claim 1 wherein the relaxation mechanism includes a body including two ends and an arcuate portion extending from one of the ends to the other of the ends and forming an opening between the two ends such that the body is in the shape of an open ring.

3. The compression pump of claim 2, wherein the body has a textured portion formed on an outer surface thereof.

4. The compression pump of claim 2, wherein the release mechanism further includes a grip portion extending outwardly from an outer surface of the body at a location of the body that is 180 ° apart from the opening and opposite from each other.

5. The push pump of claim 4 wherein the grip portion is Y-shaped, and/or

The grip portion is formed with a textured portion.

6. The pressing pump as claimed in claim 2, wherein a guide portion is formed on at least one of upper and lower sides of at least one of the two end portions.

7. The compression pump of claim 6, wherein the guide is a ramp.

8. The compression pump of claim 1, wherein the release mechanism is configured such that the second height is greater than an initial height of the resilient return mechanism when the release mechanism is captured between the movable portion and the stationary portion.

9. The pressure pump according to any one of claims 1 to 8, wherein the movable portion includes a pressure head and a piston rod, the fixed portion includes a mouthpiece and a cylinder, wherein the mouthpiece is connected to the cylinder, one end of the piston rod is connected to the pressure head, a piston is provided near the other end of the piston rod and extends into the cylinder, and the loosening mechanism is capable of being caught between the pressure head and the mouthpiece.