An inner bag structure for a vacuum bottle

Abstract

This invention discloses an inner bag structure for a vacuum bottle, comprising a bottle body and an inner bag within the bottle body. The bottle body has a discharge port, the discharge port's infeed direction is connected to a limiting frame, and the limiting frame has an inward concave portion. The inner bag is fitted onto the limiting frame. When negative pressure is generated at the discharge port, the inner bag can deflate without wrinkles along the contour of the limiting frame towards the inward concave portion. The inner bag is an elastic bag; when it contains material, it expands. When the material is sucked out under the negative pressure of the discharge port, the inner bag gradually contracts to fit against the limiting frame, and then elastically deflates towards the inward concave portion. In its unexpanded, natural state, the shape of the inner bag is consistent with the outer contour of the limiting frame. The inward concave portion is a curved groove, which smoothly transitions to the outer contour surface of the limiting frame, allowing the inner bag to deflate to fit against the curved groove, thus preventing wrinkles. This invention can prevent wrinkles from forming in the inner bag within the vacuum bottle during the deflation process.

Description

Technical Field

[0001] This invention relates to the field of vacuum bottle technology, and more particularly to an inner bag structure for a vacuum bottle. Background Technology

[0002] Vacuum bottles are an important component of daily chemical product packaging. Their main function is to isolate cosmetics from the outside air, preventing oxidation and deterioration during use. Some types of vacuum bottles contain an inner bag. The cosmetics are placed inside the inner bag, which gradually deflates as the cosmetics are used. However, existing inner bags may develop wrinkles during this deflation process, causing some cosmetic material to get trapped and resulting in waste. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the prior art, the present invention provides an inner bag structure for a vacuum bottle, which can prevent wrinkles from forming in the inner bag during the collapse process of the vacuum bottle.

[0004] Technical solution: To achieve the above objective, the present invention provides an inner bag structure for a vacuum bottle, comprising a bottle body and an inner bag within the bottle body. The bottle body has a discharge port, and the discharge port is connected to a limiting frame in the feeding direction. The limiting frame has an inward concave portion. The inner bag is fitted onto the limiting frame. When negative pressure is generated at the discharge port, the inner bag can collapse without wrinkles along the contour of the limiting frame towards the inward concave portion.

[0005] Furthermore, the inner bag is an elastic bag body. When the inner bag is filled with material, the inner bag is expanded. When the material is sucked out under the negative pressure of the outlet, the inner bag gradually shrinks to fit against the limiting frame, and then elastically collapses towards the concave part.

[0006] Furthermore, when the inner bag is in its natural, uninflated state, the shape of the inner bag is consistent with the outer contour shape of the limiting frame.

[0007] Furthermore, the shape of the inner bag is consistent with the inner cavity shape of the bottle body, and the inner bag is inflated and fits into the inner cavity of the bottle body.

[0008] Furthermore, the concave portion is a curved groove, which smoothly transitions to the outer contour surface of the limiting frame, allowing the inner bag to deflate and fit snugly onto the curved groove, thus eliminating wrinkles in the inner bag.

[0009] Furthermore, the limiting frame has a feeding channel, and the curved groove is connected to the discharge port through the feeding channel. When the inner bag collapses towards the curved groove, the material in the curved groove enters the discharge port along the feeding channel.

[0010] Furthermore, the limiting frame is provided with multiple curved grooves, all of which are connected to the feeding channel; when the inner bag collapses toward the curved groove, the collapsed parts of the inner bag in each curved groove converge and stick together in the feeding channel to close the feeding channel.

[0011] Furthermore, the limiting frame is columnar, the feeding channel is located at the center of the column of the limiting frame, and multiple curved grooves are arranged in a ring around the feeding channel.

[0012] Furthermore, the bottle body is provided with a pressure balance hole that connects the inside and outside of the bottle body, so that the pressure inside and outside the bottle body is balanced when the inner bag expands and contracts.

[0013] Furthermore, the bottle body is equipped with a vacuum pump core at the outlet, which can generate negative pressure at the outlet.

[0014] Beneficial effects: The inner bag structure of the vacuum bottle of the present invention is an elastic bag body. A limiting frame is connected to the outlet of the bottle body. The shape of the inner bag when it is not expanded or contracted is consistent with the outer contour shape of the limiting frame. The limiting frame has a curved groove. When the inner bag shrinks to fit the limiting frame, the inner bag continues to collapse towards the curved groove, so that the inner bag will not produce wrinkles after collapse, avoiding the material from being hidden in the wrinkles and causing waste. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the bottle structure of the present invention;

[0016] Appendix Figure 2 This is a schematic diagram of the cross-section of the limiting frame. Detailed Implementation

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] As attached Figures 1 to 2 The inner bag structure of a vacuum bottle includes a bottle body 1 and an inner bag 3 within the bottle body 1. The opening of the inner bag 3 is fixed to the opening of the bottle body 1. The inner bag 3 contains material. The bottle body 1 has a discharge port 5, and the feeding direction of the discharge port 5 is connected to a limiting frame 4. The limiting frame 4 has an inward concave portion. The inner bag 3 is fitted onto the limiting frame 4. When negative pressure is generated at the discharge port 5, the inner bag 3 can collapse without wrinkles along the contour of the limiting frame 4 towards the inward concave portion. The contour shape of the limiting frame 4 can restrict the shape of the inner bag 3 after collapse. When the inner bag 3 collapses towards the inward concave portion, the limiting frame 4 can expand a portion of the inner bag 3, making it less prone to wrinkles during the collapse process and preventing material from being trapped in the wrinkles, thus avoiding material waste.

[0019] The inner bag 3 is an elastic bag. When the inner bag 3 is filled with material, it expands. When the material is sucked out under the negative pressure of the outlet 5, the inner bag 3 gradually contracts to fit against the limiting frame 4, and then elastically collapses towards the concave part. Because the inner bag 3 is elastic, it can adaptably fit the outer contour shape of the limiting frame 4, and no wrinkles are left when the inner bag 3 fits against the limiting frame 4. Then, when the inner bag 3 elastically collapses towards the concave part, wrinkles are not easily generated due to the elastic deformation of the collapsed area.

[0020] When the inner bag 3 is in its natural, uninflated state, its shape is consistent with the outer contour of the limiting frame 4, so as to ensure that the inner bag 3 is wrinkle-free when it fits on the outer contour of the limiting frame 4.

[0021] The shape of the inner bag 3 is consistent with the inner cavity shape of the bottle body 1. After the inner bag 3 is inflated, it fits into the inner cavity of the bottle body 1. This prevents the inner bag 3 from wrinkling due to the limiting effect of the inner cavity of the bottle body 1 on the inner bag 3 before it shrinks to fit the limiting frame 4, so that the surface of the inner bag 3 can remain smooth.

[0022] The concave portion is a curved groove 6, the inner contour of which is curved. The curved groove 6 is smoothly connected to the outer contour of the limiting frame 4. The inner bag 3 can be deflated to fit on the curved groove 6, so that the shape of the deflated area on the inner bag 3 is consistent with the inner contour shape of the curved groove 6, thereby making the inner bag 3 fit on the curved groove 6 without wrinkles.

[0023] The limiting frame 4 has a feeding channel 7, and the curved groove 6 is connected to the discharge port 5 through the feeding channel 7. When the inner bag 3 shrinks to fit against the limiting frame 4, the material enters the curved groove 6 accordingly. When the inner bag 3 collapses towards the curved groove 6, the material in the curved groove 6 enters the discharge port 5 along the feeding channel 7. When the inner bag 3 fits against the curved groove 6 without wrinkles, the material in the curved groove 6 is completely squeezed into the feeding channel 7, thereby preventing material residue in the curved groove 6.

[0024] The limiting frame 4 is provided with multiple curved grooves 6, all of which are connected to the feeding channel 7, so that the material in each curved groove 6 can be squeezed into the feeding channel 7. When the discharge port 5 generates negative pressure, the inner bag 3 collapses towards the curved grooves 6. The collapsed portions of the inner bag 3 in each curved groove 6 converge and stick together in the feeding channel 7 to close the feeding channel 7, thereby squeezing the material in the feeding channel 7 out of the discharge port 5 from the inner bag 3, further reducing the material residue in the inner bag 3.

[0025] The bottle body 1 is provided with an air pressure balance hole 8 that connects the inside and outside of the bottle body 1, so that the air pressure inside and outside the bottle body 1 is balanced when the inner bag 3 expands and contracts.

[0026] The outlet 5 of the bottle body 1 is equipped with a vacuum pump core 9. The vacuum pump core 9 can generate negative pressure at the outlet 5. The vacuum pump core 9 has a pressure cap 2. Pressing the pressure cap 2 can make the vacuum pump core 9 pump out the material in the inner bag 3.

[0027] The limiting frame 4 is columnar, and the feeding channel 7 is located at the center of the column of the limiting frame 4. Multiple curved grooves 6 are arranged circumferentially around the feeding channel 7. (See attached image) Figure 2 As shown in one embodiment, the outer contour of the limiting frame 4 is cylindrical, the inner cavity of the bottle body 1 and the unexpanded inner bag 3 are also cylindrical, the curved groove 6 is a columnar groove with an arc cross section, and multiple curved grooves 6 are arranged circumferentially on the side columnar surface of the limiting frame 4. The curved groove 6 smoothly transitions with the outer contour of the limiting frame 4, and the connection between the curved groove 6 and the feeding channel 7 is also smoothly transitioned. When the inner bag 3 collapses toward the curved groove 6, the collapsed part converges toward the feeding channel 7 and adheres to it to close the feeding channel 7, squeezing out the material in the feeding channel 7. This avoids the formation of wrinkles and also avoids the material remaining in the limiting frame 4, so that there is no material residue in the vacuum bottle, avoiding material waste. This is especially suitable for some high-value cosmetic materials.

[0028] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An inner bag structure of a vacuum bottle, characterized by: Includes a bottle body (1) and an inner bag (3) inside the bottle body (1). The bottle body (1) has a discharge port (5). The feeding direction of the discharge port (5) is connected to a limiting frame (4). The limiting frame (4) has an inner recess. The inner bag (3) is fitted onto the limiting frame (4). When the discharge port (5) generates negative pressure, the inner bag (3) can shrink without wrinkles along the outline of the limiting frame (4) toward the inner recess. The inner bag (3) is an elastic bag. When the inner bag (3) is filled with material, the inner bag (3) is expanded. When the material is sucked out under the negative pressure of the outlet (5), the inner bag (3) gradually shrinks to fit against the limiting frame (4) and then elastically collapses towards the concave part. When the inner bag (3) is in its natural, uninflated state, the shape of the inner bag (3) is consistent with the outer contour shape of the limiting frame (4); the shape of the inner bag (3) is consistent with the inner cavity shape of the bottle body (1), and the inner bag (3) fits into the inner cavity of the bottle body (1) after being inflated. The concave part is a curved groove (6), and the curved groove (6) is smoothly connected to the outer contour surface of the limiting frame (4). The inner bag (3) can be deflated to fit on the curved groove (6) so that the inner bag (3) is wrinkle-free. The limiting frame (4) has a feeding channel (7), and the curved groove (6) is connected to the discharge port (5) through the feeding channel (7). When the inner bag (3) collapses towards the curved groove (6), the material in the curved groove (6) enters the discharge port (5) along the feeding channel (7). The limiting frame (4) is provided with multiple curved grooves (6), and all of the multiple curved grooves (6) are connected to the feeding channel (7). When the inner bag (3) collapses towards the curved groove (6), the collapsed parts of the inner bag (3) in each curved groove (6) converge and stick together in the feeding channel (7) to close the feeding channel (7). The limiting frame (4) is columnar, and the feeding channel (7) is located at the center of the column of the limiting frame (4). Multiple curved grooves (6) are arranged in a ring around the feeding channel (7).

2. The inner bag structure of a vacuum bottle according to claim 1, characterized by: The bottle body (1) is provided with an air pressure balance hole (8) that connects the inside and outside of the bottle body (1) so that the air pressure inside and outside the bottle body (1) is balanced when the inner bag (3) expands and contracts.

3. The inner bag structure of a vacuum bottle according to claim 2, characterized in that: The outlet (5) of the bottle body (1) is equipped with a vacuum pump core (9), which can generate negative pressure at the outlet (5).

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