A bottle cap capable of accurately metering out a liquid

Abstract

The present application belongs to the field of bottle caps, and discloses a bottle cap capable of accurately quantifying the outflow of liquid. The bottle cap can make the quantitative outflow of liquid independent of the coordinated operation of the user, thereby greatly improving the accuracy of the quantitative outflow of liquid. The bottle cap comprises a siphon unit, the siphon unit comprises a siphon channel, an exhaust channel and a siphon shell arranged on the inner surface of the cap, the siphon shell has a flow inlet and a liquid storage cavity, the siphon channel is in the shape of "U", the siphon channel has a bending part, the suction end of the siphon channel is in communication with the liquid storage cavity, the other end of the siphon channel penetrates through the cap body and is open to the outside, the communication end of the exhaust channel is in communication with the liquid storage cavity, and the distances of the suction end, the bending part and the communication end from the inner surface of the cap in the bottle depth direction increase successively.

Description

Technical Field

[0001] This invention belongs to the field of bottle caps, specifically relating to a bottle cap that can precisely measure the amount of liquid that flows out. Background Technology

[0002] Currently, the metering caps on the market are made by using a measuring cup in conjunction with a corresponding liquid flow triggering mechanism. Consumers need to measure the liquid according to the scale. This method of pouring and metering mainly relies on the user to control the liquid flow triggering mechanism to achieve a quantitative flow of liquid.

[0003] This quantitative method requires the cooperation of human vision and hand. Due to the user's own reasons or the influence of some objective factors, this quantitative operation method cannot achieve a high degree of accuracy, thus affecting the effect of quantitative operation in specific scenarios. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a bottle cap that can precisely dispense liquid, enabling the quantitative dispensing of liquid to be achieved without relying on the user's coordinated actions, thereby greatly improving the accuracy of the quantitative dispensing of liquid.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bottle cap capable of precisely dispensing a quantitative amount of liquid includes a cap body that is fitted onto a predetermined bottle body. The surface of the cap body facing the interior of the predetermined bottle body is designated as the inner surface of the cap, and the direction from the inner surface of the cap towards the bottom of the predetermined bottle body is designated as the bottle depth direction. The cap is characterized by further comprising: a siphon unit, including a siphon channel, an exhaust channel, and a siphon shell disposed on the inner surface of the cap. The siphon shell has an inlet and a storage chamber. The storage chamber communicates with the interior of the predetermined bottle body through the inlet. The siphon channel is U-shaped along the bottle depth direction and has a bend. One end of the siphon channel communicates with the storage chamber and serves as the suction end, while the other end extends out of the cap body and opens to the outside. One end of the exhaust channel communicates with the storage chamber and serves as the connecting end. The distances from the suction end, the bend, and the connecting end to the inner surface of the cap increase sequentially along the bottle depth direction.

[0007] Preferably, the predetermined bottle body does not deform when subjected to a predetermined pressure, and the bent portion has a return air port that communicates with the interior of the predetermined bottle body. The distances from the inlet, the bent portion, the return air port, and the communicating end to the inner surface of the cap increase sequentially along the depth direction of the bottle.

[0008] Preferably, the siphon housing is detachably disposed on the inner surface of the cover.

[0009] Furthermore, the siphon housing has a cap end, an inner end, and a peripheral surface extending along the bottle depth direction. The cap end is open and located on the inner surface of the cap. A liquid storage cavity is formed inside the peripheral surface of the cap. The inner end has an inner skirt extending in the opposite direction along the bottle depth direction. The inner skirt is in a continuous closed ring shape, and the distance between the free end of the inner skirt and the inner surface of the cap is a predetermined distance. The siphon unit also includes an outflow pipe that passes through the cap body along the bottle depth direction and is open at both ends. The opening of the outflow pipe facing the inner end of the bottle is located inside the inner skirt. A liquid storage cavity is formed between the siphon housing and the inner surface of the cap. The inner skirt and the outflow pipe form a siphon channel.

[0010] Furthermore, the inner end of the bottle has a recessed top facing the inner surface of the cap, and the return air port is formed on the bottom surface of the recessed top, with the return air port corresponding to the outflow pipe along the depth direction of the bottle.

[0011] Furthermore, the recessed sidewall at the top of the shell corresponds to the inner skirt along the depth of the bottle.

[0012] Furthermore, the siphon unit also includes an exhaust pipe that runs along the depth of the bottle through the cap body and is open at both ends. The exhaust pipe is located between the inner skirt and the peripheral surface of the shell, and forms an exhaust channel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Because the bottle cap of the present invention, which can accurately dispense liquid, includes a siphon unit, the siphon unit includes a siphon channel, an exhaust channel, and a siphon shell disposed on the inner surface of the cap. The siphon shell has an inlet and a liquid storage chamber. The siphon channel is U-shaped and has a bend. The suction end of the siphon channel communicates with the liquid storage chamber, and the other end extends out of the cap body and opens to the outside. The connecting end of the exhaust channel communicates with the liquid storage chamber. The distance from the suction end, the bend, and the connecting end to the inner surface of the cap increases sequentially along the depth direction of the bottle. When in use, the predetermined bottle body is inverted. Because the exhaust channel is connected to the atmosphere, the liquid in the predetermined bottle continuously enters the storage chamber and the liquid level rises continuously along the depth of the bottle. When the liquid level reaches the bend, the siphon channel exerts a siphon effect on the liquid in the storage chamber. Since the predetermined bottle is inverted, the suction end of the siphon channel is higher than the other end. The volume of liquid flowing out by the siphon effect depends only on the physical parameters of the siphon channel and the siphon shell. Therefore, this invention enables the quantitative outflow of liquid to be achieved without relying on the user's coordinated operation, thereby greatly improving the accuracy of the quantitative outflow of liquid.

[0015] 2. Because the predetermined bottle body of the present invention does not deform when subjected to a predetermined pressure, and the bent portion has a vent that communicates with the interior of the predetermined bottle body, the distances from the inlet, the bent portion, the vent, and the communicating end to the inner surface of the cap increase sequentially along the depth direction of the bottle. When the bottle body is initially inverted, due to the pressure difference between the vent and the inlet and the surface tension of the liquid inside the predetermined bottle, the liquid inside the predetermined bottle cannot flow out of the predetermined bottle body through the vent via the siphon channel. After the siphon effect ends, the internal pressure inside the predetermined bottle decreases due to the outflow of liquid. Furthermore, at this time, the pressure formed on the surface of the predetermined bottle due to the pressure difference between the inside and outside of the predetermined bottle is not at the predetermined pressure. Therefore, a negative pressure is formed inside the predetermined bottle relative to the outside. Under the negative pressure, the air outside the predetermined bottle is replenished into the predetermined bottle through the siphon channel and the air return port, so that the negative pressure inside the predetermined bottle gradually decreases until it disappears. This allows the predetermined bottle to return to its internal pressure state and achieve the siphon effect again. Therefore, the present invention can achieve the siphon effect multiple times without restoring the inverted predetermined bottle to its upright position, thus achieving continuous and precise quantitative liquid outflow.

[0016] 3. Because the siphon housing of the present invention is detachably disposed on the inner surface of the cover, the present invention can conveniently achieve different precise quantitative outflows of liquid by replacing the siphon housing.

[0017] 4. Because the siphon housing of the present invention has a cap end, an inner end, and a peripheral surface extending along the bottle depth direction, the cap end is open and disposed on the inner surface of the cap, a liquid storage cavity is formed inside the peripheral surface of the shell, the inner end has an inner skirt extending in the opposite direction along the bottle depth direction, the inner skirt is in a continuous closed ring shape, and the distance between the free end of the inner skirt and the inner surface of the cap is a predetermined distance, the siphon unit also includes an outflow pipe that passes through the cap body along the bottle depth direction and is open at both ends, and the opening of the outflow pipe toward the inner end of the bottle is located inside the inner skirt, a liquid storage cavity is formed between the siphon housing and the inner surface of the cap, and the inner skirt and the outflow pipe form a siphon channel, therefore, the structure of the present invention is simple, and thus easy to injection mold. Attached Figure Description

[0018] Figure 1 A schematic diagram of a bottle cap capable of precisely dispensing liquid according to an embodiment of the present invention. Figure 1 ;

[0019] Figure 2 A schematic diagram of a bottle cap capable of precisely dispensing liquid according to an embodiment of the present invention. Figure 2 ;

[0020] Figure 3 A top view of a bottle cap capable of precisely dispensing liquid according to an embodiment of the present invention;

[0021] Figure 4 A side view of a bottle cap that can precisely measure the amount of liquid flowing out, according to an embodiment of the present invention;

[0022] Figure 5 for Figure 4 AA sectional view.

[0023] In the diagram: 100, bottle cap for precise quantitative liquid dispensing; G, cap body; G1, inner surface of cap; D, depth direction of bottle; L, snap-on structure; R, siphon path; 10a, bend; 10b, suction end; 10c, connecting end; 11, siphon shell; 11a, cap end; 11b, inner end of bottle; 11c, circumferential surface of shell; 111, liquid storage chamber; 112, inlet; 113, recessed top of shell; 114, vent; 115, inner skirt of shell; 12, outlet pipe; 13, exhaust pipe; 13a, exhaust port. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate a bottle cap that can accurately measure the flow of liquid according to the present invention. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0025] like Figures 1-5 As shown, a bottle cap 100 capable of precisely dispensing liquid in this embodiment includes a cap body G and a siphon unit.

[0026] The cap body G is fitted onto the predetermined bottle body (not shown in the attached figure), and the predetermined bottle body does not deform when the internal pressure changes, due to the pressure difference between the inside and outside, when a predetermined pressure is generated on the surface. This pressure bearing capacity should be related to the material and overall structure of the predetermined bottle body.

[0027] The surface of the cap body G facing the inside of the predetermined bottle is designated as the inner surface of the cap G1, and the direction from the inner surface of the cap G1 to the bottom of the predetermined bottle is designated as the bottle depth direction D.

[0028] The siphon unit includes a siphon housing 11, an outlet pipe 12, and an exhaust pipe 13.

[0029] The siphon housing 11 has a cap end 11a along the bottle depth direction D, an inner end 11b, and a peripheral surface 11c extending along the bottle depth direction D.

[0030] The cover end 11a is open and disposed on the inner surface G1 of the cover, and the siphon housing 11 is detachably disposed on the inner surface G1 of the cover via the cover end 11a. Specifically, the outer edge of the shell peripheral surface 11c of the cover end 11a forms a detachable snap structure L with the inner surface G1 of the cover, and the shell peripheral surface 11c of the cover end 11a is elastic. By applying force by the user, the friction between the structures can be overcome, thereby causing the snap structure L to disengage or engage, thus realizing the detachable disposal of the siphon housing 11 and the cover body G.

[0031] The siphon housing 11 also has a liquid storage chamber 111, an inlet 112, a recessed top 113, a return air port 114, and an inner skirt 115.

[0032] A liquid storage chamber 111 is formed between the shell peripheral surface 11c and the inner surface G1 of the cap. An inlet 112 is formed on the surface of the shell peripheral surface 11c. A shell top recess 113 is formed on the end face of the siphon housing 11 at the inner end 11b of the bottle, and the shell top recess is oriented towards the inner surface G1 of the cap. A return air port 114 is formed on the bottom surface of the shell top recess 113. Specifically, the liquid storage chamber 111 is connected to the interior of the predetermined bottle through the inlet 112. The shell peripheral surface 11c extends continuously along the bottle depth direction D. The projected outline of the lateral siphon housing 11 is an inverted "concave" shape. In this embodiment, the return air port 114 is a circular hole with a diameter range of 2-3 mm.

[0033] The inner skirt 115 is formed on the inner wall of the inner end 11b of the siphon housing 11 and extends in the opposite direction along the depth D of the bottle. The inner skirt 115 is a continuous closed ring, and the distance between the free end of the inner skirt 115 and the inner surface G1 of the cap is a predetermined distance. The inner skirt 115 corresponds to the side wall of the recess 113 in the top of the shell along the depth D of the bottle.

[0034] The outflow pipe 12 is inserted through the cap body G along the depth direction D of the bottle and is open at both ends. The return air port 114 corresponds to the outflow pipe 12 along the depth direction D of the bottle, and the opening of the outflow pipe 12 toward the inner end 11b of the bottle is located inside the inner skirt 115 of the shell. In this embodiment, the outflow pipe 12 is a straight pipe, and one end of the outflow pipe 12 passes through the cap body G and is exposed to the outside.

[0035] Specifically, the inner skirt 115 and the outflow pipe 12 form a U-shaped siphon channel along the depth direction D of the bottle. A bend 10a of the siphon channel is formed between the opening of the outflow pipe 12 toward the inner end 11b of the bottle and the inner wall of the recess 113 at the top of the shell. The return air port 114 communicates with the interior of the predetermined bottle body through the bend 10a. One end of the siphon channel is connected to the liquid storage chamber 111, which is used as the suction end 10b, and the other end is the opening of the outflow pipe 12 toward the outside.

[0036] The exhaust pipe 13 is installed along the depth direction D of the bottle on the cap body G and is open at both ends. The exhaust pipe 13 is located between the inner skirt 115 and the peripheral surface 11c of the shell. Specifically, the exhaust pipe 13 forms an exhaust channel with one end connected to the liquid storage chamber 111 and uses this end as the connecting end 10c. In this embodiment, the exhaust pipe 13 is a straight pipe and the exhaust pipe 13 forms an exhaust port 13a on the surface of the cap body G.

[0037] The distances from the suction end 10b, the bend 10a, and the connecting end 10c to the inner surface G1 of the cap increase sequentially along the bottle depth direction D; the distances from the inlet 112, the bend 10a, the return air port 114, and the connecting end 10c to the inner surface G1 of the cap also increase sequentially along the bottle depth direction D. When the predetermined bottle is inverted, the liquid inside the predetermined bottle enters the storage chamber 111 through the inlet 112. When the liquid level in the storage chamber 111 continues to rise to the bend 10a, a siphon effect occurs. The liquid in the storage chamber 111 flows continuously along the siphon path R to the outside of the predetermined bottle. When the liquid level in the storage chamber 111 drops continuously due to the outflow to between the suction end 10b and the shell top recess 113, the siphon effect disappears, and a negative pressure is formed inside the predetermined bottle relative to the outside. External air is replenished into the predetermined bottle through the outflow pipe 12 and the return air port 114. During the above process, the siphon shell 11 is always connected to the outside through the connection end 10c.

[0038] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A bottle cap capable of precisely dispensing a measured amount of liquid, comprising a cap body that fits over a predetermined bottle body, wherein the surface of the cap body facing the interior of the predetermined bottle body is defined as the inner surface of the cap, and the direction from the inner surface of the cap towards the bottom of the predetermined bottle body is defined as the bottle depth direction, characterized in that, Also includes: The siphon unit includes a siphon channel, an exhaust channel, and a siphon housing disposed on the inner surface of the cover. The siphon housing has an inlet and a liquid storage chamber. The liquid storage chamber is connected to the interior of the predetermined bottle through the inlet. The siphon channel is U-shaped along the depth of the bottle and has a bend. One end of the siphon channel is connected to the liquid storage chamber and serves as the suction end, while the other end extends out of the cap body and opens to the outside. One end of the exhaust channel is connected to the liquid storage chamber, and this end is used as the connection end. The predetermined bottle body does not deform when subjected to a predetermined pressure. The bent portion has a return air port that communicates with the interior of the predetermined bottle body. The distances from the inlet, the bend, the return air port, and the connecting end to the inner surface of the cap increase sequentially along the depth direction of the bottle. The siphon housing has a cap end along the depth direction of the bottle, an inner end of the bottle, and a peripheral surface extending along the depth direction of the bottle. The cap end is open and disposed on the inner surface of the cap, and the liquid storage cavity is formed inside the peripheral surface of the shell. The inner end of the bottle has an inner skirt extending in the opposite direction to the depth of the bottle. The inner skirt is in the form of a continuous closed ring, and the free end of the inner skirt is at a predetermined distance from the inner surface of the cap. The siphon unit further includes an outflow pipe that extends along the depth direction of the bottle through the cap body and is open at both ends, and the opening of the outflow pipe facing the inner end of the bottle is located inside the inner skirt of the shell. The liquid storage cavity is formed between the siphon housing and the inner surface of the cover, and the inner skirt of the housing and the outflow pipe form the siphon channel. The inner end of the bottle has a recessed top facing the inner surface of the cap, and the vent is formed on the bottom surface of this recessed top, with the vent corresponding to the outlet pipe along the depth direction of the bottle. The siphon unit also includes an exhaust pipe that passes through the cap body along the depth direction of the bottle and is open at both ends. The exhaust pipe is located between the inner skirt of the shell and the peripheral surface of the shell, and the exhaust pipe forms the exhaust channel.

2. The bottle cap for precisely dispensing liquid according to claim 1, characterized in that: in, The siphon housing is detachably mounted on the inner surface of the cover.

3. The bottle cap for precisely dispensing liquid according to claim 1, characterized in that: in, The recessed sidewall at the top of the shell corresponds to the inner skirt along the depth direction of the bottle.

Images