CN215972983U

CN215972983U - Emulsion pump with rotation stopping mechanism and container provided with emulsion pump

Info

Publication number: CN215972983U
Application number: CN202122655344.4U
Authority: CN
Inventors: 丁祥
Original assignee: Taixing KK Plastic Co ltd
Current assignee: Taixing KK Plastic Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-08
Anticipated expiration: 2031-11-02

Abstract

The lotion pump for being installed on the opening part of the container comprises a pressure head, a cylinder cover, a tooth socket, a cylinder and a piston rod. When the lotion pump is mounted on the container, the cylinder is contacted with at least one part of the upper part of the opening part of the container and/or the inner side of the opening part of the container. A first rotation stopping structure is formed on the cylinder, and the first rotation stopping structure is matched with a second rotation stopping structure formed on the opening part of the container so as to prevent the cylinder from rotating relative to the opening part of the container. The emulsion pump configuration may allow for smooth opening or locking of the ram. Also relates to a container comprising the emulsion pump.

Description

Emulsion pump with rotation stopping mechanism and container provided with emulsion pump

Technical Field

The present invention relates to mechanisms for pumping products such as household chemical products, and in particular to a lotion pump with a rotation stop mechanism. The utility model also relates to a container comprising the emulsion pump.

Background

In the field of products such as household chemicals (e.g., body washes, hand washes, shampoos, etc.), a container containing the product is fitted with an emulsion pump so that a user can easily dispense the product from the container for use. Although referred to herein as an emulsion pump, it may be capable of pumping other fluid or semi-fluid products in addition to emulsions.

The lower lock head is a common type of emulsion pump, and the emulsion pump comprises a pressure head, a tooth socket, an air cylinder and an air cylinder cover. Wherein, the pressure head links to each other with the upper end of piston rod, and the lower extreme of piston rod is provided with the piston to inside stretching into the cylinder. The cylinder cover is arranged on the upper part of the cylinder, the tooth socket is fixedly connected with the cylinder, the tooth socket is connected with the opening part of the container through a structure such as screw threads, and the cylinder extends into the container. When the lotion pump is mounted on the opening of the container, a gasket is provided between the flange of the cylinder and the opening of the container, and the gasket is pressed to ensure sealing at the opening of the container.

When the emulsion pump is in the lower lock state, the pressure head is fixedly connected with the cylinder cover through structures such as threads and the like so as to keep the lower lock state. When the user wishes to use the product, the ram is rotated to disconnect the ram from the cylinder head so that the ram can be moved up to a standby position.

One problem that exists in current emulsion pump structure is when rotatory pressure head in order to open the pressure head or lock, and the cylinder head can transmit the rotatory moment of torsion of pressure head for the cylinder, and because the surface that contacts between the flange of cylinder, gasket and the container opening is smooth surface, can drive cylinder head and cylinder during the rotatory pressure head and rotate together, so the pressure head will not be rotatory for the cylinder head, and then lead to the unable conversion between the lower tapered end state of realizing the emulsion pump and the standby state.

Accordingly, there is a need for further improvements in the construction of existing emulsion pumps to overcome the above-mentioned problems associated with existing emulsion pumps.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems occurring in the prior art. The utility model aims to provide a lotion pump with an improved structure, which has a rotation stopping structure and prevents a cylinder from rotating relative to an opening part of a container so as to ensure that a pressure head can be smoothly opened or locked.

The emulsion pump is arranged on the opening part of a container of the container and comprises a pressure head, a cylinder cover, a tooth socket, a cylinder and a piston rod, wherein one end of the piston rod is connected to the pressure head, the other end of the piston rod is provided with a piston and extends into the inner space of the cylinder, and the cylinder cover and the tooth socket are fixedly connected to the cylinder. When the emulsion pump is arranged on the container, the air cylinder is contacted with at least one part of the upper part of the opening part of the container and/or the inner side of the opening part of the container, and a first rotation stopping structure is formed on the air cylinder and is matched with a second rotation stopping structure formed on the opening part of the container, so that the rotation of the air cylinder relative to the opening part of the container can be prevented.

In the lotion pump with the structure, through the matching between the first rotation stopping structure and the second rotation stopping structure, when the rotary pressure head is opened or locked, the rotation of the air cylinder relative to the opening part of the container can be prevented, thereby allowing the smooth opening or locking of the pressure head.

In one specific structure, the first rotation stopping structure is at least one sawtooth formed on the flange of the cylinder along the circumferential direction, and when the lotion pump is installed on the container, the sawtooth presses a recess matched with the sawtooth shape on the wall of the opening part of the container under the pressure to form the second rotation stopping structure.

Further, a thin wall portion is formed on the container, and the saw-teeth press depressions on the thin wall portion when the lotion pump is mounted on the container. The provision of the thin-walled portion may enable the serrations to more easily form the depressions on the container opening portion.

Preferably, an inner plug is formed below the flange of the cylinder, and the inner plug is fitted with an inner wall of the opening of the container to form a seal when the lotion pump is mounted to the container. Thereby, a gasket provided between the cylinder and the container can be omitted, resulting in cost saving.

In another specific structure, the first rotation stopping structure is an external ratchet formed on an outer surface of the cylinder, and the external ratchet is engaged with an inner wall of an opening formed in the opening portion of the container.

Further, an inner plug is formed on the outer surface of the cylinder at a position offset from the outer ratchet, and when the lotion pump is mounted on the container, the inner plug is engaged with the inner wall of the opening of the container opening portion to form a seal.

Preferably, a third rotation stopping structure is formed on an inner wall of the pressure head, and a fourth rotation stopping structure is formed on an outer wall of the cylinder head, and the third rotation stopping structure and the fourth rotation stopping structure cooperate to allow the pressure head to rotate in the locking direction and prevent the pressure head from rotating in the opening direction when the pressure head is connected to the cylinder head.

Specifically, one of the third rotation stop structure and the fourth rotation stop structure is formed as a spur piece, and the other of the third rotation stop structure and the fourth rotation stop structure is formed as a spur block.

The third and fourth rotation stopping structures can prevent the emulsion pump from being opened unintentionally due to collision and the like during transportation.

Also relates to a container, which comprises the emulsion pump.

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 shows a sectional view of a lotion pump according to a first embodiment of the present invention.

FIG. 2 illustrates a front view of the cylinder of the lotion pump of FIG. 1.

Fig. 3 shows a perspective view of the cylinder of fig. 2.

Fig. 4 shows a cross-sectional view of the container opening of the container to which the lotion pump of fig. 1 is mounted.

Fig. 5 is a perspective view of the container opening shown in fig. 4.

FIG. 6 illustrates a bottom view of the head of the emulsion pump of FIG. 1.

FIG. 7 illustrates a front view of a cylinder head of the emulsion pump of FIG. 1.

Fig. 8 shows a top view of the cylinder head of fig. 7.

Fig. 9 shows a cross-sectional view of a lotion pump according to a second embodiment of the present invention.

Fig. 10 shows a front view of the cylinder of the lotion pump of fig. 9.

Fig. 11 is a sectional view showing a container opening portion of a container to which the lotion pump shown in fig. 9 is attached.

(symbol description)

100 emulsion pump

110 indenter

111 vertical tooth piece

120 cylinder head

121 vertical tooth block

130 tooth socket

140 cylinder

141 saw tooth

142 cylinder flange

143 inner plug

150 piston rod

160 container opening

161 thin wall part

162 opening inner wall

200 emulsion pump

210 ram

220 cylinder head

230 tooth socket

240 cylinder

241 inner plug

242 outer ratchet

260 container opening

261 inner wall of opening

262 internal ratchet

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 utility model. 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. 1-8 illustrate a lotion pump 100 according to a first embodiment of the present invention. As shown in fig. 1, the lotion pump 100 includes a ram 110, a cylinder head 120, a mouthpiece 130, a cylinder 140, and a piston rod 150. The piston rod 150 is connected to the ram 110 at its upper end, is provided with a piston at its lower end, and protrudes into the inner space of the cylinder 140. The cylinder head 120 and the socket 130 are fixedly coupled to the cylinder 140. The mouthpiece 130 is coupled to the container opening portion 160 by a structure such as a screw thread, thereby mounting the lotion pump 100 on the container. In the installed state, the cylinder 140 protrudes into the container interior, and at least a portion of the cylinder 140 contacts the upper and/or inner side of the container opening 160 of the container.

The ram 110 is releasably connectable to the cylinder head 120 by a connection such as a screw thread to retain the ram 110 in a lower lock state when the ram 110 is connected to the cylinder head 120 and to allow the ram 110 to be brought into a standby state by a return mechanism such as a spring when the ram 110 is rotated to disengage the ram 120.

In the present invention, a rotation stopping structure is provided on the cylinder 140, which can prevent the cylinder 140 from rotating with respect to the container, particularly, the container opening portion 160 when a user rotates the ram 110 to set the ram 110 to a standby state or a locking state, thereby enabling the user to smoothly open or lock the ram 110.

Specifically, as shown in fig. 2 and 3, the rotation stopping structure on the cylinder 140 is at least one serration 141 provided on the cylinder 140. Preferably, a plurality of serrations 141 are provided along the circumferential direction of the cylinder 140. The serrations 141 are preferably provided on the cylinder flange 142 to be in contact with the container opening portion 160. When the lotion pump 100 is mounted on the container, the cylinder flange 142 of the cylinder 140 is brought into contact with the top or upper portion of the container opening portion 160 of the container, and at this time, the saw teeth 141 are pressed against the corresponding portion of the container opening portion 160 to deform the portion, thereby forming depressions matching the shape of the saw teeth 141. Thus, after emulsion pump 100 is installed, serrations 141 will engage with depressions in container opening 160 to prevent mouthpiece 130 from rotating relative to container opening 160. When the user rotates the ram 110, the torque applied to the ram 110 will be transmitted to the cylinder 140 and the engagement between the serrations 141 of the cylinder 140 and the depressions in the container opening 160 will produce a torque in the opposite direction to counteract the torque of the ram 110, thereby holding the cylinder 140 stationary relative to the container.

Preferably, as shown in fig. 4 and 5, a thin portion 161 is formed at the top of the container opening 160, and the saw teeth 141 of the cylinder 140 are in contact with the thin portion 161 when the ram 110 is mounted on the container, so that recesses capable of engaging with the saw teeth 141 can be more easily formed in the thin portion 161.

Preferably, an inner plug 143 is provided below the cylinder flange 142, and the inner plug 143 can be engaged with the opening inner wall 162 of the container opening 160, thereby achieving sealing between the cylinder 140 and the container opening 160. This eliminates the need for a gasket between the cylinder 140 and the container opening 160 in the conventional lotion pump.

In a further preferred configuration of the emulsion pump 100, as shown in fig. 6 to 8, a rotation stop structure is also provided between the head 110 and the cylinder head 120 to prevent the head 110 in the lower lock state from being unintentionally opened. Specifically, as shown in fig. 6, a plurality of dog teeth 111 are formed in a circumferential direction on an inner wall of the ram 110, and as shown in fig. 7 and 8, a plurality of dog teeth 121 are formed in a circumferential direction on an outer wall of the cylinder head 120. The vertical tooth piece 111 is engaged with the vertical tooth block 121. When the ram 110 is rotated in the locking direction, the dog leg 111 is able to pass over the dog leg 121 so that the rotation of the ram 110 is not blocked. When the ram 110 is rotated in the opening direction, the latch 111 is blocked by the latch 121, and thus a sufficient force needs to be applied to the ram 110 to deform the latch 111 to allow the ram 110 to rotate. Thus, the ram 110 is prevented from being opened by mistake due to a collision during transportation.

It can be understood that, with the above-described structure, the positions of the serrations 141 and the thin-walled portion 161 in the rotation stop structure between the cylinder 140 and the container opening portion 160 may be interchanged, that is, the serrations are provided on the container opening portion 160 and the thin-walled portion is provided below the cylinder flange 142 of the cylinder 140. Similarly, the positions of the vertical tooth piece 111 and the vertical tooth block 121 in the rotation stopping structure between the ram 110 and the cylinder head 120 may be interchanged, that is, the vertical tooth piece is provided on the cylinder head 120 and the vertical tooth block is provided on the ram 110. These variations are all within the scope of the present invention.

< second embodiment >

Fig. 9-11 illustrate a lotion 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 fig. 9, similar to the lotion pump 100 of the first embodiment, the lotion pump 200 also includes a head 210, a cylinder head 220, a mouthpiece 230, and a cylinder 240, and the connection relationship between the respective components is also substantially the same as that of the lotion pump 100 of the first embodiment. The lotion pump 200 is mounted on the container, specifically, on the container opening 160 of the container.

The difference between the lotion pump 200 of the second embodiment and the lotion pump 100 of the first embodiment mainly lies in the specific implementation manner of the rotation stopping structure between the cylinder 240 and the container opening portion 260.

As shown in fig. 10, an inner plug 241 is provided on an outer surface of the cylinder 240, and the inner plug 241 is engaged with an opening inner wall 261 of the container opening portion 260 of the container to seal the cylinder 240 and the container opening portion 260. An outer ratchet 242 is formed at a position offset from the inner plug 241, for example, at a position below the inner plug 241 on the outer surface of the cylinder 240 shown in the drawing. Correspondingly, inner ratchets 262 are formed at corresponding positions on an opening inner wall 261 of the container opening 260. When the lotion pump 200 is mounted to the container, the outer ratchet 242 and the inner ratchet 262 are engaged with each other to prevent the cylinder 240 from rotating with respect to the container opening portion 260.

Of course, it is within the scope of the present invention that the outer ratchet 242 may be formed above the inner plug 241.

Further, similarly to the lotion pump 100 of the first embodiment, a rotation preventing structure such as a vertical tooth piece and a vertical tooth block may be formed between the head 210 and the cylinder head 220 of the lotion pump 200 of the second embodiment to prevent the head 210 from being opened by mistake.

Claims

1. An emulsion pump is arranged on a container opening part of a container and comprises a pressure head, a cylinder cover, a tooth sleeve, a cylinder and a piston rod, wherein one end of the piston rod is connected to the pressure head, the other end of the piston rod is provided with a piston and extends into the inner space of the cylinder, the cylinder cover and the tooth sleeve are fixedly connected to the cylinder,

when the emulsion pump is installed on the container, the cylinder is in contact with at least a part of the upper part of the opening part of the container and/or the inner side of the opening part of the container, and a first rotation stopping structure is formed on the cylinder and is matched with a second rotation stopping structure formed on the opening part of the container, so that the cylinder can be prevented from rotating relative to the opening part of the container.

2. The lotion pump of claim 1, wherein said first anti-rotation structure is at least one serration formed in a circumferential direction on a flange of said cylinder, said serration pressing a depression matching a shape of said serration on a wall of an opening portion of said container under pressure when said lotion pump is mounted to said container to form said second anti-rotation structure.

3. An emulsion pump as set forth in claim 2, wherein a thin wall portion is formed at said container opening portion, and said saw-teeth press said depressions out of said thin wall portion when said emulsion pump is mounted to said container.

4. A lotion pump as set forth in claim 2, wherein an inner plug is formed below said flange of said cylinder, said inner plug cooperating with an inner wall of the opening of said container to form a seal when said lotion pump is mounted on said container.

5. The lotion pump of claim 1, wherein the first rotation stopping structure is an external ratchet formed on an outer surface of the cylinder, the external ratchet being engaged with an inner wall of an opening formed at the opening portion of the container.

6. A lotion pump as claimed in claim 5, wherein an inner plug is formed on the outer surface of the cylinder at a position offset from the outer ratchet teeth, the inner plug cooperating with an inner wall of the opening of the container to form a seal when the lotion pump is mounted on the container.

7. The emulsion pump of any one of claims 1-6, wherein a third anti-rotation structure is formed on an inner wall of the ram, and a fourth anti-rotation structure is formed on an outer wall of the cylinder head, the third anti-rotation structure and the fourth anti-rotation structure cooperating to allow the ram to rotate in the locking direction and prevent the ram from rotating in the opening direction when the ram is coupled to the cylinder head.

8. The emulsion pump of claim 7, wherein one of the third and fourth anti-rotation structures is formed as a vertical tooth plate and the other of the third and fourth anti-rotation structures is formed as a vertical tooth block.

9. A container comprising a lotion pump according to any one of claims 1 to 8.