Ball-type packaging bottle

Abstract

A ball-bearing packaging bottle includes an outer bottle body (1), a bottle cap (2), a ball (3), a connector (4), and an inner bottle body (5). The ball (3) is disposed within the connector (4). A limiting member (6) is provided on the inner ring of the bottle cap (2). The connector (4) includes a connecting seat (41), a limiting ring (43), and a ball cavity (42). The inner diameter of the inner bottle body matches the outer diameter of the ball (3), and the ball (3) is disposed within the ball cavity (42). The bottle cap (2) has a liquid outlet (44) and an annular surface (45) that fits against the outer surface of the ball (3). The opening of the retaining ring (43) is recessed inward along the outer surface of the ball (3) by a certain distance. When not in use, the bottle cap (2) is mounted on the connector (4) and the retaining member (6) is press-fitted with the retaining ring (43). At least one of the following is a sealed fit: between the ball (3) and the retaining ring (43), or between the ball (3) and the annular surface (45). By setting a retaining ring (43) that is recessed inward at the opening, and by pressing the retaining ring (43) with the retaining member (6) on the bottle cap (2), the sealing reliability of the ball (3) in contact with the sealing surface when not in use is improved, thus enhancing the user experience.

Description

Technical Field

[0001] This invention relates to the field of cosmetics, and more particularly to a liquid cosmetic container. Background Technology

[0002] Most existing deodorants consist of a container bottle filled with liquid deodorant. The top of the bottle has a rolling ball chamber and a liquid outlet. The outlet is fitted with an applicator head that is also made of rolling ball. When in use, the bottle is inverted, and the applicator head rolls to apply the deodorant liquid to the body, similar to the principle of a ballpoint pen. The entire bottle is made of plastic, and the liquid deodorant is discarded after use. When not in use, the cap is screwed onto the bottle body. The pre-tightening force of the threads compresses the rolling ball inside the cap, fixing it in place and blocking the liquid outlet, thus preventing leakage of the deodorant liquid.

[0003] The drawback of existing technology is that, when considering environmental factors and using replaceable inner liners within the container, the original simple compression sealing method will significantly decrease in reliability over time. Furthermore, since replaceable inner liners add a detachable press-fit connector, which is typically threaded to the outer bottle, it's inconvenient to add a threaded connection to the cap. The cap usually connects to the outer bottle via a snap-fit ​​mechanism, which results in insufficient pressure from the ejector ring on the ball bearing, further reducing the reliability of the seal when not in use. This causes inconvenience for consumers, necessitating a new structure for the liquid dispensing area, coupled with a more reliable sealing method, to improve the user experience of replaceable containers. Invention Overview

[0005] Technical issues

[0006] The technical problem to be solved by the present invention is to provide a ball bearing packaging bottle, which improves the sealing reliability of the ball bearing contacting the sealing surface when not in use by additionally setting a limiting ring that shrinks inward at the opening and pressing the limiting ring by a limiting member on the bottle cap.

[0007] Technical solutions

[0008] The present invention is implemented as follows: a ball-bearing packaging bottle includes an outer bottle body, a bottle cap, a ball, a connector, and an inner bottle body. The outer bottle body and the inner bottle body are containers with openings. The inner bottle body is disposed inside the outer bottle body. The connector is connected to the opening of the outer bottle body and fixes the inner bottle body. The ball is disposed inside the connector. A limiting member is provided on the inner ring of the bottle cap. The connector includes a connecting seat and a limiting ring. The limiting ring is connected to the connecting seat to form a ball cavity. The connector is mounted on the outer bottle body through the connecting seat. The limiting ring is a cylindrical body coaxial with the connecting seat. The inner diameter of the cylindrical body matches the outer diameter of the ball. The ball is disposed inside the ball cavity.

[0009] The connecting seat on the side of the rolling ball cavity facing the outer bottle body is provided with a liquid outlet hole that communicates with the inner bottle body. The upper edge of the liquid outlet hole is provided with an annular surface that fits against the outer surface of the rolling ball.

[0010] The opening of the limiting ring on the side of the rolling ball cavity away from the outer bottle body contracts inward along the outer surface of the rolling ball by a certain distance, so that the diameter of the opening of the limiting ring is slightly smaller than the diameter of the rolling ball. The limiting ring is made of a material with a certain elasticity.

[0011] When not in use, the bottle cap is mounted on the connector and the limiting member is interference-fitted with the limiting ring. At this time, there is at least one sealing fit between the ball and the limiting ring, or between the ball and the annular surface.

[0012] The inner wall of the bottle cap is also provided with an ejector, which is a cylindrical body and is located on the inner wall of the bottle cap. When not in use, the ejector part of the ejector directly or indirectly presses and fixes the ball to form a sealing fit between the ball and the annular surface.

[0013] The limiting component is a cylindrical body, which is installed inside the bottle cap; when not in use, the cylindrical body is interference-fitted with the outer wall of the limiting ring.

[0014] The limiting component and the bottle cap are integrally formed as a whole.

[0015] The cylindrical body can be detachably installed on the ejector.

[0016] The bottom of the area where the cylindrical body mates with the outer wall of the limiting ring extends horizontally outward and bends to form a support groove, the outer wall of which fits against the inner wall of the bottle cap.

[0017] A top plate is provided on the side of the cylindrical body away from the outer bottle body. A first movable groove that mates with the top part of the top plate is provided on the top surface of the top plate. In the non-use state, the top part of the top part indirectly presses and fixes the rolling ball through the bottom surface of the top plate.

[0018] A pressing component is detachably installed inside the bottle cap. The lower end face of the pressing component is a concave spherical surface that matches the outer surface of the rolling ball, and the upper end face of the pressing component is provided with an insertion groove. In the non-use state, the ejector part of the ejector indirectly presses and fixes the rolling ball through the concave spherical surface.

[0019] The contact surface where the lower edge of the concave spherical surface contacts the upper edge of the limiting ring is a frustum surface, and the diameter of the frustum surface on the side away from the outer bottle is larger than the diameter on the side closer to the outer bottle.

[0020] The connecting seat is provided with an elastic support structure; the limiting member is a cylindrical body, which is installed inside the bottle cap; in the non-use state, the elastic support structure pushes the ball to press against the limiting ring, so that the ball and the limiting ring form a sealing fit, and the cylindrical body is interference-fitted with the outer wall of the limiting ring.

[0021] The elastic support structure includes several fan-shaped springs, which are arranged in a ring around the inner circle of the liquid outlet hole, with a certain gap between two adjacent fan-shaped springs. In the non-use state, the fan-shaped springs push the rolling ball to press against the limiting ring; in use, the rolling ball is pushed by pressure to open the fan-shaped springs.

[0022] The elastic support structure consists of several elastic reset components that are centrally symmetrically arranged between the limiting ring and the annular surface.

[0023] The elastic support structure includes a spring, a support plate, and a valve core. A certain travel clearance exists between the spring and the support plate. A recessed area is provided at the axis of the spring. The support plate has a piston cavity that matches the travel of the recessed area. A through hole is provided on the recessed area and the piston cavity. One end of the valve core engages with the through hole in the recessed area via an open valve cover, and the other end engages with the through hole in the piston cavity via a closed valve cover. In the non-use state, the spring pushes the ball against the limiting ring, at which point the closed valve cover seals the through hole in the piston cavity. In use, the ball, under pressure, pushes the valve core towards the bottle, causing both the recessed area and the through hole in the piston cavity to be open.

[0024] A sealing ring is provided on the upper edge of the limiting ring; when not in use, the sealing ring is in contact with the ball seal, and the sealing ring is made of TPU material.

[0025] The limiting ring includes a fixed ring and a ball cylinder. The fixed ring is integrally formed on the connecting seat. The bottom of the ball cylinder is a second movable groove that cooperates with the fixed ring. The top opening of the ball cylinder cooperates with the outer surface of the ball.

[0026] The limiting ring includes a fixing ring and a ball cylinder. The fixing ring is integrally formed with the support plate, and the ball cylinder is integrally formed with the spring plate.

[0027] Beneficial effects

[0028] The present invention, a ball bearing packaging bottle, takes into account that the use of a replaceable inner bottle will significantly extend the service life of the container. Therefore, an additional limiting ring that retracts inward at the opening is set, and the limiting ring is pressed down by a limiting component on the bottle cap, so as to improve the sealing reliability of the ball bearing contacting the sealing surface when not in use, thereby enhancing the user experience. Attached Figure Description

[0029] Figure 1 This is an exploded view of the parts in Embodiment 1 of the ball-bearing packaging bottle of the present invention;

[0030] Figure 2 This is a cross-sectional view of the area above the bottle in Embodiment 1 of the present invention;

[0031] Figure 3 This is an exploded view of the parts in Embodiment 2 of the present invention;

[0032] Figure 4 This is a cross-sectional view of the area above the bottle in Embodiment 2 of the present invention;

[0033] Figure 5 This is an exploded view of the parts in Embodiment 3 of the present invention;

[0034] Figure 6 This is a cross-sectional view of the area above the bottle in Embodiment 3 of the present invention;

[0035] Figure 7 This is an exploded view of the parts in Embodiment 4 of the utility model;

[0036] Figure 8 This is a cross-sectional view of the area above the bottle in an unused state in Embodiment 4 of the present invention;

[0037] Figure 9 for Figure 8 A schematic diagram showing the state of the ball bearings during use;

[0038] Figure 10 is a three-dimensional schematic diagram of the elastic support structure in Embodiment 4 of the present invention;

[0039] Figure 11 is a cross-sectional view of the area above the bottle in an unused state in Embodiment 5 of the present invention;

[0040] Figure 12 is a schematic diagram of the state of the ball bearings in the usage state shown in Figure 11;

[0041] Figure 13 is a three-dimensional schematic diagram of the elastic support structure in Embodiment 5 of the present invention;

[0042] Figure 14 is a cross-sectional view of the area above the bottle in an unused state in Embodiment 6 of the present invention;

[0043] Figure 15 is a schematic diagram of the state of the ball bearings in the usage state shown in Figure 14;

[0044] Figure 16 is a three-dimensional schematic diagram of the elastic support structure in Embodiment 6 of the present invention;

[0045] In the diagram: 1 Outer bottle body, 2 Bottle cap, 3 Roller ball, 4 Connector, 5 Inner bottle body, 6 Limiting component, 7 Extrusion component, 21 Top ring, 41 Connecting seat, 42 Roller ball cavity, 43 Limiting ring, 44 Liquid outlet hole, 45 Annular surface, 46 Fan-shaped spring, 47 Sealing ring, 48 Elastic reset component, 51 Flanged edge, 61 Cylindrical body, 62 First movable groove, 63 Support groove, 64 Top plate, 71 Concave spherical surface, 72 Frustum, 73 Insertion groove, 411 Limiting surface, 431 Fixing ring, 432 Roller ball cylinder, 433 Second movable groove, 491 Spring, 492 Support piece, 493 Stroke clearance, 494 Recessed area, 495 Piston cavity, 496 Through hole, 497 Valve core, 498 Open valve cover, 499 Closed valve cover.

[0046] The best embodiment of the present invention

[0047] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the description of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims. Example

[0048] like Figure 2 , 3 As shown, a ball-bearing packaging bottle includes an outer bottle body 1, a bottle cap 2, a ball bearing 3, a connector 4, and an inner bottle body 5. The outer bottle body 1 and the inner bottle body 5 are containers with openings. The inner bottle body 5 is disposed inside the outer bottle body 1. The connector 4 connects to the opening of the outer bottle body 1 and fixes the inner bottle body 5. The ball bearing 3 is disposed within the connector 4. A limiting member 6 is provided on the inner ring of the bottle cap 2. The connector 4 includes a connecting seat 41 and a limiting ring 43. 3 is connected to the connecting seat 41 to form a ball-rolling cavity 42. The connecting piece 4 is installed on the outer bottle body 1 through the connecting seat 41. The limiting ring 43 is a cylindrical body coaxial with the connecting seat 41. The inner diameter of the cylindrical body matches the outer diameter of the ball 3. The ball 3 is set in the ball-rolling cavity 42. During installation, the inner bottle body 5 is placed in the outer bottle body 1, and then the connecting piece 4 is installed. At this time, the connecting seat 41 of the connecting piece 4 presses and fixes the flange 51 of the inner bottle body 5 through the limiting surface 411.

[0049] The present invention can be further described as follows: the connecting seat 41 on the side of the ball-rolling cavity 42 facing the outer bottle 1 is provided with a liquid outlet 44 communicating with the inner bottle 5. The upper edge of the liquid outlet 44 is provided with an annular surface 45 that fits against the outer surface of the ball 3. The opening of the limiting ring 43 on the side of the ball-rolling cavity 42 away from the outer bottle 1 is contracted inward along the outer surface of the ball 3 by a certain distance so that the diameter of the opening of the limiting ring 43 is slightly smaller than the diameter of the ball 3, thereby keeping the ball 3 in the ball-rolling cavity 42. The limiting member 6 is a cylindrical body 61, which is installed in the bottle cap 2. Under normal circumstances, the diameter of the opening of the limiting ring 43 gradually contracts inward to 80% to 95% of the diameter of the ball 3.

[0050] In the non-use state, the bottle cap 2 is fitted onto the connector 4, and the cylindrical body 61 is press-fitted with the outer wall of the limiting ring 43. The limiting ring 43 is made of a material with a certain elasticity, for example, when using polyethylene (PE) material, the elastic modulus is 100-300 MPa, and when using polypropylene (PP) material, the elastic modulus is 0.8-2.5 GPa. After the bottle cap 2 is put on, the press-fit causes the cylindrical body 61 to squeeze the limiting ring 43, causing the limiting ring 43 to slightly contract inward, thereby locking the ball 3. At this time, there is at least one sealing fit between the ball 3 and the limiting ring 43, or between the ball 3 and the annular surface 45. When in use, the bottle cap 2 is removed, and the ball-bearing packaging bottle is inverted. The ball 3 comes into contact with the human body surface and is subjected to pressure in the direction of the outward bottle body 1, and is in a loose state and can roll freely, so that the liquid cosmetics in the inner bottle body 5, such as deodorant, are carried out to the user's body surface by the rolling of the ball 3.

[0051] Considering environmental factors, the replaceable inner bottle 3 in this invention is made of a biodegradable material, which is a paper material made of wood fiber, bamboo fiber, chitin fiber or polylactic acid fiber.

[0052] In embodiments 1, 2, and 3, an ejector 21 is also provided on the inner wall of the bottle cap 2. The ejector 21 is a cylindrical body and is provided on the inner wall of the bottle cap 2. In the non-use state, the ejector part of the ejector 21 directly or indirectly presses and fixes the ball 3 so that the ball 3 and the annular surface 45 form a sealing fit. When in use, the bottle cap 2 is removed, and the ball-type packaging bottle is inverted so that the ball 3 faces downward. At this time, the ball 3 is in a loose state and can rotate freely, bringing out the deodorant liquid from the liquid outlet 44 and applying it to the consumer's body.

[0053] Example 1

[0054] like Figure 1 , 2 As shown, the limiting member 6 and the bottle cap 2 are integrally formed as a whole.

[0055] Example 2

[0056] like Figure 3 , 4 As shown, the cylindrical body 61 is detachably mounted on the ejector 21; the difference between this embodiment and embodiment 1 is that the bottom of the area where the cylindrical body 61 mates with the outer wall of the limiting ring 43 extends outward horizontally and bends to form a support groove 63, and the outer wall of the support groove 63 fits against the inner wall of the bottle cap 2.

[0057] This embodiment can be further described as follows: a top plate 64 is provided on the side of the cylindrical body 61 away from the outer bottle body 1, and a first movable groove 62 that cooperates with the top part 21 is provided on the top surface of the top plate 64; in the non-use state, the top part of the top part 21 indirectly presses and fixes the ball 3 through the bottom surface of the top plate 64; considering the convenience of disassembly and assembly for cleaning, the first movable groove 62 and the top part 21 are connected by an insert; in this embodiment, preferably, the top plate 64 is a flat plate.

[0058] Example 3

[0059] like Figure 5 , 6 As shown, the difference between this embodiment and embodiment 1 is that a squeezing member 7 is detachably installed inside the bottle cap 2. The lower end face of the squeezing member 7 is a concave spherical surface 71 that matches the outer surface of the rolling ball 3. The upper end face of the squeezing member 7 is provided with an insertion groove 73. In the non-use state, the ejector part of the ejector 21 indirectly squeezes and fixes the rolling ball 3 through the concave spherical surface 71.

[0060] In this embodiment, in order to ensure the guidance and extrusion stability during extrusion, the contact surface where the lower edge of the concave spherical surface 71 contacts the upper edge of the limiting ring 43 is a frustum surface 72, and the diameter of the frustum surface 72 on the side away from the outer bottle body 1 is larger than the diameter on the side closer to the outer bottle body 1.

[0061] In embodiments 4, 5, and 6, the connecting seat 41 is provided with an elastic support structure, and the limiting member 6 is a cylindrical body 61, which is installed inside the bottle cap 2. In the non-use state, the elastic support structure pushes the ball 3 to press against the limiting ring 43. At this time, the outer wall of the cylindrical body 61 and the limiting ring 43 are interference-fitted, so that the ball 3 is held in place and a sealing fit is formed between the ball 3 and the limiting ring 43. In use, the ball-type packaging bottle is inverted so that the ball 3 faces downward. During use, the ball 3 contacts the body surface and is pressured to push the elastic support structure towards the bottle body 1, so that the ball 3 becomes loose and can rotate freely. At this time, the deodorant liquid flows onto the ball 3, and as the ball 3 rotates, it is carried out and coated onto the consumer's body.

[0062] Example 4

[0063] like Figure 7 , 8 As shown in Figures 9 and 10, the elastic support structure consists of several elastic reset members 48 centrally symmetrically arranged between the limiting ring 43 and the annular surface 45; the elastic reset member 48 is an S-shaped torsion spring or an S-shaped elastic reset member 48 formed by hollowing out the material between the limiting ring 43 and the annular surface 45.

[0064] In this embodiment, as a further improved embodiment, to facilitate the removal of the ball 3 for cleaning, the limiting ring 43 includes a fixing ring 431 and a ball cylinder 432. The fixing ring 431 is integrally formed on the connecting seat 41. The bottom of the ball cylinder 432 is a second movable groove 433 that mates with the fixing ring 431. The top opening of the ball cylinder 432 mates with the outer surface of the ball 3. Normally, considering the reliability of the connection between the fixing ring 431 and the second movable groove 433, the two are connected by threads. After removing the second movable groove 433, the ball cavity 42 can be opened and the ball 3 can be taken out.

[0065] When a split and detachable structure is adopted, considering that the position of the cylindrical body 61 pressing the limiting ring 43 may be interfered with by the second movable groove 433, the upper edge of the ball cylinder 432 is bent inward with a large arc, so that the cylindrical body 61 can directly press the upper part of the ball cylinder 432.

[0066] Example 5

[0067] As shown in Figures 11, 12, and 13, the difference between Embodiment 5 and Embodiment 4 is that the elastic support structure includes several fan-shaped spring pieces 46, which are arranged in a ring array in the inner circle of the liquid outlet hole 44, with a certain gap between two adjacent fan-shaped spring pieces 46; in the non-use state, the fan-shaped spring pieces 46 push the rolling ball 3 to press against the limiting ring 43; in use, the rolling ball 3 is pushed by pressure to open the fan-shaped spring pieces 46.

[0068] In this embodiment, as a further improved embodiment, a sealing ring 47 is provided on the upper edge of the limiting ring 43; in the non-use state, the sealing ring 47 is in sealing contact with the ball 3, and the sealing ring 47 is made of TPU material.

[0069] Example 6

[0070] As shown in Figures 14, 15, and 16, the elastic support structure includes a spring plate 491, a support plate 492, and a valve core 497. A certain stroke clearance 493 exists between the spring plate 491 and the support plate 492. A recessed area 494 is provided at the axial center of the spring plate 491. The support plate 492 has a piston cavity 495 that matches the stroke of the recessed area 494. A through hole 496 is provided on the recessed area 494 and the piston cavity 495. One end of the valve core 497 is connected to the through hole 496 on the recessed area 494 via an open valve cover 498. When the valve core 497 is closed, the other end of the valve core 497 engages with the through hole 496 on the piston cavity 495 through the closed valve cover 499. The open valve cover 498 ensures that the through hole 496 on the recessed area 494 is open in any state. In the non-use state, the spring 491 pushes the ball 3 to press against the limiting ring 43, at which time the closed valve cover 499 closes the through hole 496 on the piston cavity 495. When in use, the ball 3 is pressured to push the valve core 497 towards the bottle body 1, so that both the recessed area 494 and the through hole 496 on the piston cavity 495 are open.

[0071] Furthermore, in this embodiment, in order to facilitate the removal and cleaning of the ball 3 as in Embodiment 4, and considering the simplification of the structure and the convenience of disassembly and assembly, the spring piece 491 and the support piece 492 are separate, and the support piece 492 is integrally formed with the base 41; the spring piece 491 is located at the bottom of the ball cylinder 432, and the ball cylinder 432 is limited by the fixing ring 431 integrally formed with the base 41; at the same time, the limiting ring 43 includes the fixing ring 431 and the ball cylinder 432, the fixing ring 431 is integrally formed with the support piece 492, and the ball cylinder 432 is integrally formed with the spring piece 491.

Claims

1. A ball-bearing packaging bottle, comprising an outer bottle body (1), a bottle cap (2), a ball bearing (3), a connector (4), and an inner bottle body (5), wherein the outer bottle body (1) and the inner bottle body (5) are containers with openings, the inner bottle body (5) is disposed inside the outer bottle body (1), the connector (4) is connected to the opening of the outer bottle body (1) and fixes the inner bottle body (5), and the ball bearing (3) is disposed inside the connector (4), characterized in that: The inner ring of the bottle cap (2) is provided with a limiting member (6). The connecting member (4) includes a connecting seat (41) and a limiting ring (43). The limiting ring (43) is connected to the connecting seat (41) to form a ball cavity (42). The connecting member (4) is installed on the outer bottle body (1) through the connecting seat (41). The limiting ring (43) is a cylindrical body coaxial with the connecting seat (41). The inner diameter of the cylindrical body matches the outer diameter of the ball (3). The ball (3) is set in the ball cavity (42). The ball cavity (42) is provided with a liquid outlet (44) communicating with the inner bottle (5) on the connecting seat (41) facing the outer bottle (1). The upper edge of the liquid outlet (44) is provided with an annular surface (45) that fits against the outer surface of the ball (3). The opening of the limiting ring (43) on the side of the rolling ball cavity (42) away from the outer bottle body (1) contracts inward along the outer surface of the rolling ball (3) by a certain distance so that the diameter of the opening of the limiting ring (43) is slightly smaller than the diameter of the rolling ball (3). The limiting ring (43) is made of a material with a certain elasticity. When not in use, the bottle cap (2) is mounted on the connector (4) and the limiting member (6) is press-fitted with the limiting ring (43). At this time, at least one of the following is a sealed fit: between the ball (3) and the limiting ring (43), or between the ball (3) and the annular surface (45). The limiting member (6) is a cylindrical body (61), which is installed inside the bottle cap (2); in the non-use state, the cylindrical body (61) is interference-fitted with the outer wall of the limiting ring (43); The bottom of the area where the cylindrical body (61) mates with the outer wall of the limiting ring (43) extends outward horizontally and bends to form a support groove (63), the outer wall of the support groove (63) being in contact with the inner wall of the bottle cap (2).

2. The ball-bearing packaging bottle as described in claim 1, characterized in that: The inner wall of the bottle cap (2) is also provided with an ejector (21), which is a cylindrical body and is provided on the inner wall of the bottle cap (2). In the non-use state, the ejector part of the ejector (21) directly or indirectly squeezes and fixes the ball (3) so that the ball (3) and the annular surface (45) form a sealing fit.

3. The ball-bearing packaging bottle as described in claim 2, characterized in that: The limiting component (6) and the bottle cap (2) are integrally formed as a whole.

4. The ball-bearing packaging bottle as described in claim 2, characterized in that: The cylindrical body (61) is detachably mounted on the ejector (21).

5. The ball-bearing packaging bottle as described in claim 2, characterized in that: The cylindrical body (61) is provided with an ejector plate (64) on the side away from the outer bottle body (1). The top surface of the ejector plate (64) is provided with a first movable groove (62) that cooperates with the ejector (21). In the non-use state, the ejector part of the ejector (21) indirectly presses and fixes the ball (3) through the bottom surface of the ejector plate (64).

6. The ball-bearing packaging bottle as described in claim 2, characterized in that: A pressing component (7) is detachably installed inside the bottle cap (2). The lower end face of the pressing component (7) is a concave spherical surface (71) that matches the outer surface of the ball (3). The upper end face of the pressing component (7) is provided with an insertion groove (73). In the non-use state, the ejector part of the ejector (21) indirectly presses and fixes the ball (3) through the concave spherical surface (71).

7. The ball-bearing packaging bottle as described in claim 6, characterized in that: The contact surface where the lower edge of the concave spherical surface (71) contacts the upper edge of the limiting ring (43) is a frustum surface (72). The diameter of the frustum surface (72) on the side away from the outer bottle body (1) is larger than the diameter on the side closer to the outer bottle body (1).

8. The ball-bearing packaging bottle as described in claim 1, characterized in that: A sealing ring (47) is provided on the upper edge of the limiting ring (43); when not in use, the sealing ring (47) is in sealing contact with the ball (3), and the sealing ring (47) is made of TPU material.

9. The ball-bearing packaging bottle as described in claim 1, characterized in that: The limiting ring (43) includes a fixing ring (431) and a ball cylinder (432). The fixing ring (431) is integrally formed on the connecting seat (41). The bottom of the ball cylinder (432) is a second movable groove (433) that cooperates with the fixing ring (431). The top opening of the ball cylinder (432) cooperates with the outer surface of the ball (3).

10. The ball-bearing packaging bottle as described in claim 9, characterized in that: The limiting ring (43) includes a fixing ring (431) and a ball cylinder (432). The fixing ring (431) is integrally formed with the support piece (492), and the ball cylinder (432) is integrally formed with the spring piece (491).

11. The ball-bearing packaging bottle as described in any one of claims 1-10, characterized in that: The connecting seat (41) is provided with an elastic support structure; the limiting member (6) is a cylindrical body (61), which is installed inside the bottle cap (2); in the non-use state, the elastic support structure pushes the ball (3) to press against the limiting ring (43), so that the ball (3) and the limiting ring (43) form a sealing fit, and the outer wall of the cylindrical body (61) and the limiting ring (43) are interference fit.

12. The ball-bearing packaging bottle as described in claim 11, characterized in that: The elastic support structure includes several fan-shaped springs (46), which are arranged in a ring array in the inner circle of the liquid outlet (44), with a certain gap between two adjacent fan-shaped springs (46); in the non-use state, the fan-shaped springs (46) push the ball (3) to press against the limiting ring (43); in use, the ball (3) is pushed by pressure to open the fan-shaped springs (46).

13. The ball-bearing packaging bottle as described in claim 11, characterized in that: The elastic support structure consists of several elastic reset members (48) arranged symmetrically between the limiting ring (43) and the annular surface (45).

14. The ball-bearing packaging bottle as described in claim 11, characterized in that: The elastic support structure includes a spring plate (491), a support plate (492), and a valve core (497). A certain stroke clearance (493) exists between the spring plate (491) and the support plate (492). A recessed area (494) is provided at the axial center of the spring plate (491). The support plate (492) has a piston cavity (495) that matches the stroke of the recessed area (494). A matching through hole (496) is provided on the recessed area (494) and the piston cavity (495). One end of the valve core (497) is connected to the recessed area (497) via an open valve cover (498). The valve core (497) is engaged with the through hole (496) on the piston cavity (495) through the closed valve cover (499); when not in use, the spring (491) pushes the ball (3) to press against the limit ring (43), and at this time the closed valve cover (499) closes the through hole (496) on the piston cavity (495); when in use, the ball (3) is pushed by pressure to move the valve core (497) towards the outer bottle (1), so that the recessed area (494) and the through hole (496) on the piston cavity (495) are both in the open state.

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