Roller device

Abstract

The present invention discloses a rolling ball device. The rolling ball device includes a housing having a first end, a closable second end, and a liquid storage chamber located between the first and second ends; a rolling ball configured as a sphere that is rollably positioned in the first end and partially extends outside the first end; and an elastic device positioned in the liquid storage chamber and including a support seat and an elastic member. The elastic member is disposed in the second end, and the support seat has opposing first and second support ends. The first support end abuts the rolling ball, and the second support end constrainedly supports the elastic member. Under the action of an external force, the rolling ball can move into the housing to a liquid discharge position so as to discharge liquid from the liquid storage chamber by rolling the rolling ball. The elastic force of the elastic member can automatically reset the rolling ball to a sealed position in sealed contact with the first end. This rolling ball device achieves more uniform liquid discharge, reduces waste, and provides a more stable structure. It is also reusable and offers a better user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid distribution, in particular to a ball rolling device. Background Art

[0002] At present, liquid distribution structures, especially portable liquid distribution structures, mostly use a press pump structure or a spray structure. When using a press pump structure, the pressure is different each time, and the amount of liquid discharged is different, so the liquid discharge is uneven. In addition, there will be residual liquid at the liquid outlet. Such a press pump structure increases the difficulty for the user to control the pressure, and residual liquid drips, causing waste and dirt. When using a spray structure, on the one hand, there are requirements for the use distance. The closer the distance, the higher the concentration, and the farther the distance, the lower the concentration, and the liquid will be sprayed to other locations; on the other hand, there are requirements for the viscosity of the liquid. When the viscosity of the liquid is high, the spray effect cannot be achieved.

[0003] To address the technical issues of existing liquid distribution structures, such as large and uneven liquid discharge, and a poor user experience, Chinese utility model patent CN208915810U discloses a safe, environmentally friendly, and anti-exposure roll-on device. This safe, environmentally friendly, and anti-exposure roll-on device comprises a fixed seat and a ball. The ball is rotatably restrained within the liquid-holding cavity of the fixed seat, with a portion of the ball protruding from one end of the fixed seat so that it can contact a target surface. Within the fixed seat, the ball is directly supported by a compression spring extending along the fixed seat's cavity, with the ball resting against one end of the compression spring. The other end of the compression spring is fixed to a snap-on seat near the other end of the fixed seat. The compression spring pushes the ball outward from the fixed seat. Because the inner diameter of the corresponding end of the fixed seat is smaller than the ball's diameter, when the ball is pushed outward, its outer surface conforms to the inner wall of that end, preventing liquid leakage. When the ball is pressed inward from the fixed seat, liquid can flow out evenly through the gap formed between the ball's outer surface and the inner wall of the corresponding end. This ball-bearing technology overlooks a key issue: because the compression spring extends freely along the longitudinal direction of the mounting base and directly supports the ball, the elasticity-induced wobbling or deflection of the compression spring within the mounting base can cause the ball to deviate radially toward different positions on the inner wall of the corresponding end within the mounting base. This ultimately leads to instability in the ball support. Furthermore, the length of the compression spring must be limited to avoid excessively long compression springs, which are more susceptible to deflection and further deteriorate the stability of the ball. This, in turn, results in a smaller internal cavity in the mounting base, which can store less liquid.

[0004] Accordingly, this field requires a new technical solution to solve the above problems. Summary of the Invention

[0005] In order to solve the above-mentioned problem of structural stability of the ball structure in the prior art, the present invention provides a ball device, which includes a shell, which includes a first end, a closable second end, and a liquid storage chamber located between the first end and the second end; a ball, which is configured as a spherical body that is rollably placed in the first end and partially extends to the outside of the first end; and an elastic device, which is placed in the liquid storage chamber and includes a support seat and an elastic member, the elastic member is arranged in the second end, the support seat has a first supporting end and a second supporting end relative to each other, the first supporting end abuts against the ball and the second supporting end restrains the elastic member, so that the ball can move into the shell to a liquid discharge position under the action of external force so as to bring out the liquid in the liquid storage chamber by rolling the ball, and can automatically reset to a sealing position in sealing contact with the first end by the elastic force of the elastic member.

[0006] Those skilled in the art will appreciate that the technical solution of the ball-bearing device of the present invention comprises a housing having a first end, a closable second end, and a liquid storage chamber located between the first and second ends; a ball rollably positioned partially within the first end; and an elastic device positioned within the liquid storage chamber. The elastic device comprises a support base having opposing first and second support ends, and an elastic member positioned within the second end of the housing. The support base extends within the housing along the centerline of the housing. The support base abuts the ball at its first support end and constrains the elastic member at its second support end. The elastic member presses the ball against the first end through the support base, forming a sealed contact at the first end and preventing liquid leakage. Under external force, the ball can be moved into the housing to a liquid discharge position by compressing the elastic member through the support base, whereupon the rolling ball dissipates the liquid within the liquid storage chamber. By rolling the ball, the liquid is discharged by adhering to the surface of the ball, resulting in a more uniform liquid coating in the ball-bearing device. Because the ball needs to be pressed against the first end during sealing, a predetermined pressure is applied between the ball and the elastic member at the sealing position. By adding a support seat between the ball and the elastic member, the ball device makes the fit between the ball and the elastic member more reliable and more stable. Therefore, the ball device of the present invention not only discharges liquid evenly, but also has a more reliable and stable structure. Furthermore, by using a support seat that can constrain the elastic member, the liquid storage chamber is allowed to have a greater depth, which means that its volume is larger while the bottom area of ​​the liquid storage chamber remains unchanged. In actual applications, the distance between the first support end and the second support end of the support seat can be increased to accommodate the increase in the length of the shell, thereby allowing the shell to adopt a larger capacity liquid storage chamber.

[0007] In a preferred embodiment of the above-mentioned ball-bearing device, a radially inwardly extending annular protrusion is provided on the inner wall of the first end, and a sealing ring is mounted on the annular protrusion. The sealing ring is configured to form a sealing contact with the surface of the ball in the sealing position. Since the sealing ring is typically made of a deformable material, the ball can form a sealing contact with the inner wall of the first end through the sealing ring in the sealing position. An annular protrusion extending radially inward from the inner wall of the first end, which is capable of mounting the sealing ring, not only secures the sealing ring but also, by providing the radially inwardly extending annular protrusion and then fitting the sealing ring over the annular protrusion, the inner diameter of the first end in contact with the ball surface is smaller than the maximum diameter of the ball, thereby retaining the ball in the first end and preventing it from falling out.

[0008] In a preferred embodiment of the aforementioned roller device, the roller device further includes a protective cover configured to be removably secured to the first end and covering the portion of the roller that extends outside the first end. When the roller device is ready for use, the protective cover is simply removed from the first end. When the roller device is not in use, placing the protective cover on the first end prevents dust from contaminating the portion of the roller that protrudes outside the first end. Furthermore, the protective cover prevents liquid remaining on the roller surface from contaminating the area where it is placed.

[0009] In a preferred technical solution of the above-mentioned roller ball device, the roller ball device includes a sealing cover that can form a sealed connection with the second end, and the elastic member is arranged between the sealing cover and the second support end. By arranging a sealing cover that can form a sealed connection with the second end at the second end, a closed liquid storage chamber is formed between the first end and the second end. This ensures that the liquid is sealed in the liquid storage chamber during use, placement, and carrying. This improves the portability of the roller ball device and provides a better user experience. The sealing cover can be configured to be removable. In this case, by removing the sealing cover from the housing, liquid can be repeatedly injected or replenished into the liquid storage chamber. The sealing cover can also be configured to be non-removable. In this case, the roller ball device still has a liquid replenishment function. For example, a liquid inlet for injecting liquid into the liquid storage chamber can be provided at another position of the housing, or the roller ball device no longer has a liquid replenishment function.

[0010] In a preferred embodiment of the aforementioned roller ball device, a support cover is provided between the sealing cover and the elastic member. The support cover can be mounted on the inner wall of the second end, spaced apart from the sealing cover, and abuts against the elastic member. The support cover, secured to the second end, provides a base for mounting and securing the elastic member. When the sealing cover is removed from the housing, the support cover retains the elastic member within the housing. Furthermore, the support cover, which can be secured to the second end, provides a reaction force to the elastic member acting on the roller ball, thereby ensuring the sealing and liquid discharge functions of the roller ball device at the first end.

[0011] In the preferred technical solution of the above-mentioned ball rolling device, the inner wall of the second end has a smaller inner diameter portion and a larger inner diameter portion located outside the smaller inner diameter portion, a first annular limiting groove is provided in the larger inner diameter portion, and a second annular limiting groove is provided in the smaller inner diameter portion, the sealing cover is configured to be clamped in the first annular limiting groove, and the support cover is configured to be clamped in the second annular limiting groove. By providing the smaller inner diameter portion and the larger inner diameter portion on the inner wall of the second end, the inner wall of the second end is changed in a step-like manner, which facilitates the formation of the first annular limiting groove that can clamp the sealing cover and the second annular limiting groove that can clamp the support cover. By reducing the diameter stepwise from the outside to the inside, the support cover can easily pass through the larger inner diameter portion and be positioned in the second annular limiting groove of the smaller inner diameter portion, and the sealing cover can also smoothly enter the first annular limiting groove of the larger inner diameter portion. This means that the installation method of the sealing cover and the support cover becomes simpler, and the design of the connection and matching structure is also simplified.

[0012] In a preferred embodiment of the ball-moving device, the sealing cover is formed with a plurality of spaced-apart radial projections along its circumference, and a first radial projection is formed along its circumference within the larger inner diameter portion, which is adapted to mate with a corresponding radial projection to secure the radial projection within the first annular retaining groove. The inner diameter of the first radial projection is smaller than the outer diameter of the radial projection. When the sealing cover is assembled into the second end of the housing, because the inner diameter of the first radial projection is larger than the outer diameter of the sealing cover, the sealing cover can be inserted into the first annular retaining groove within the larger inner diameter portion of the second end of the housing by simply staggering each radial projection with the corresponding first radial projection. The sealing cover is then rotated to align each radial projection with the corresponding first radial projection. Because the inner diameter of the first radial projection is larger than the outer diameter of the radial projection, the first radial projection retains the sealing cover within the first annular retaining groove.

[0013] In the preferred technical solution of the aforementioned ball-moving device, a second radial protrusion is provided along the circumference of the smaller inner diameter portion, which secures the support cover within the second annular retaining groove. This simple second radial protrusion, provided on the smaller inner diameter portion, cooperates with the second annular retaining groove to secure the support cover between the second radial protrusion and the second annular retaining groove. This second radial protrusion not only has a simple structure but also provides a stable and reliable connection to the support cover.

[0014] In a preferred embodiment of the above-mentioned ball-moving device, the support cover comprises: a disk having a central through-hole; a guide inner ring configured to extend inwardly from the inner surface of the disk along the centerline of the housing to a first predetermined height around the central through-hole; a guide outer ring configured to be concentric with the guide inner ring and to extend inwardly from the inner surface along the centerline to a second predetermined height; and an annular groove formed between the guide outer ring and the guide inner ring to receive a portion of the elastic member. The central through-hole in the disk allows liquid to circulate within the liquid storage chamber, and when adding liquid to the liquid storage chamber, it is not necessary to remove the support cover, elastic member, or other components, thereby facilitating operation. The inner side surface of the disk (the side facing the support seat) serves as the contact surface for the elastic member. The inner and outer guide rings, as well as the annular groove formed by the guide inner and outer rings, are provided on the inner side surface to stably constrain the elastic member within the annular groove. During operation or after prolonged use, the elastic member will not deviate from its original installation position, thereby ensuring the sealing reliability of the ball-moving device and the uniformity of liquid coating.

[0015] In the preferred technical solution of the aforementioned ball-bearing device, the disc is provided with a plurality of circumferential through-holes arranged around the central through-hole. Since the disc is positioned within the liquid reservoir, the provision of these circumferential through-holes facilitates smoother liquid flow within the reservoir, thereby ensuring more uniform liquid coating in the ball-bearing device. Furthermore, when adding liquid to the reservoir, these circumferential through-holes allow the liquid to flow more quickly into the reservoir.

[0016] In a preferred embodiment of the above-mentioned ball-bearing device, a deformable claw is provided on the guide outer ring; the second support end is configured as an elastic member seat having a circumferential wall extending toward the second end, a latch for accommodating the claw is provided on the circumferential wall, and the claw is configured to move relative to the latch along the centerline of the housing. The claw provided on the guide outer ring cooperates with the latch provided on the circumferential wall to effectively secure the elastic member within the annular groove and the elastic member seat. During installation, the elastic member can be pre-installed outside the housing and then placed into the liquid reservoir. This simplifies installation and improves production efficiency. Because relative movement between the claw and the latch along the centerline of the housing is permitted (the claw remains in a fixed position within the second end of the housing, but the latch can move toward the second end), when the ball-bearing device is pushed into the housing, the support seat is also pushed toward the second end, thereby compressing the elastic member. At the same time, the maximum relative movable distance between the claw and the latch restricts the maximum extension of the elastic member within the liquid storage chamber. This means that the elastic member exerts a limited force on the ball, forcing it to press against the sealing ring. This prevents the ball from exerting excessive pressure on the sealing ring, potentially damaging it. Therefore, the coordination between the claw and the latch ensures the sealing effect of the ball-moving mechanism, extending its service life.

[0017] In the preferred technical solution of the aforementioned ball bearing device, the guide outer ring is provided with multiple clearance grooves along its circumference, which divide the guide outer ring into multiple circular arc segments, at least one of which is provided with a deformable claw. Providing multiple clearance grooves on the guide outer ring allows the guide outer ring to be cut into multiple segments. Providing claws on one or more of these separated guide outer ring segments facilitates deformation of the claws, facilitating assembly of the claws with the latch and preventing damage to the claws due to excessive deformation during assembly.

[0018] In the preferred technical solution of the above-mentioned ball rolling device, a connecting mechanism is provided on the second end, and the connecting mechanism is configured to be connected to a predetermined device. Connecting the ball rolling device to the predetermined device via the connecting mechanism expands the application range of the ball rolling device, makes the configuration more flexible, and provides a better user experience.

[0019] In the preferred technical solution of the above ball rolling device, the connecting mechanism is a threaded structure. This simple threaded structure realizes the function of connecting to a predetermined device. This connection method is simple in structure, reliable in connection, and easy to assemble and disassemble.

[0020] In the preferred technical solution of the above ball rolling device, the connecting mechanism is a snap-fit ​​structure. This simple snap-fit ​​structure realizes the function of connecting to a predetermined device. This structure is low-cost and simple to connect.

[0021] In a preferred embodiment of the aforementioned rolling ball device, the surface of the rolling ball is provided with a predetermined roughness, which is determined based on the viscosity of the liquid contained in the liquid storage chamber. When the liquid contained in the liquid storage chamber has a low viscosity, the low-viscosity liquid has better fluidity and is generally easier to discharge, so a rolling ball with a smoother surface is used to ensure the sealing of the rolling ball device. When the liquid contained in the liquid storage chamber has a higher viscosity, the high-viscosity liquid has poor fluidity, and the smooth rolling ball surface is less likely to adhere to the high-viscosity liquid. Therefore, a rolling ball with a rougher surface is used. The rolling of the roughened surface of the ball can remove the high-viscosity liquid, thereby ensuring uniform liquid coating of the rolling ball device.

[0022] In a preferred embodiment of the aforementioned ball-bearing device, an annular groove extending radially outward is provided on the inner wall of the first end. A sealing ring is mounted in the groove and configured to form a sealing contact with the surface of the ball in the sealing position. The provision of the annular groove allows the sealing ring to be secured while reducing the use of structural material. This arrangement reduces manufacturing costs and allows for greater flexibility in the placement of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0024] Figure 1 2. It is a schematic perspective view of the exploded structure of an embodiment of the ball rolling device of the present invention;

[0025] Figure 2 is a front view of an embodiment of a ball rolling device of the present invention;

[0026] Figure 3 It is along Figure 2 A cross-sectional view of an embodiment of the ball rolling device of the present invention taken along section line AA;

[0027] Figure 4 It is along Figure 2 A cross-sectional view of an embodiment of the ball rolling device of the present invention taken along section line BB;

[0028] Figure 5 is a perspective schematic diagram of an embodiment of a support base of a ball rolling device of the present invention;

[0029] Figure 6 is a perspective schematic diagram of an embodiment of a support cover of a ball rolling device of the present invention;

[0030] Figure 7 is a first perspective schematic diagram of an embodiment of a sealing cover of a ball rolling device of the present invention;

[0031] Figure 8 2 is a second perspective schematic diagram of an embodiment of the sealing cover of the ball rolling device of the present invention.

[0032] List of reference numerals:

[0033] 1. Ball bearing device; 11. Protective cover; 111. Annular rib; 12. Ball bearing; 13. Sealing ring; 131. Sealing ring groove; 14. Housing; 141. First end; 141a. Inner wall of first end; 141b. Outer wall of first end; 411. Annular protrusion; 412. Rib groove; 143. Liquid storage chamber; 142. Second end; 421. Portion with larger inner diameter; 422. Portion with smaller inner diameter; 423. First annular limiting groove; 424. First radial protrusion; 425. Positioning protrusion; 426. Second annular limiting groove; 427. Second radial protrusion; 428. Thread; 15. Sealing cover; 51. Cover body; 51a. Inner side of cover body; 51b. Outer side of cover body; 52. Circumferential wall; 52a , lower edge; 52b, upper edge; 53, sealing groove; 54, radial cover protrusion; 541, first radial protrusion groove; 542, positioning protrusion groove; 55, handle; 16, elastic device; 61, support cover; 611, disc; 611a, inner side of disc; 612, guide inner ring; 613, guide outer ring; 614, annular groove; 615, claw; 616, center through hole; 617, circumferential through hole; 618, clearance groove; 62, elastic member; 63, support seat; 631, first support end; 632, second support end; 633, connecting rod; 634, elastic member seat; 635, bayonet; 636, ball seat; 637, seat wall hole; 638, ball abutment edge; 17, sealing ring. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "inside," "outside," "top," "bottom," and "vertical" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, terms such as "installed," "connected," "set," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In order to solve the above-mentioned problems of structural stability and reliability of ball rolling devices in the prior art, the present invention provides a ball rolling device 1. The ball device 1 includes a shell 14, which includes a first end 141, a closable second end 142, and a liquid storage chamber 143 located between the first end 141 and the second end 142; a ball 12, which is configured as a sphere that can be rolled in the first end 141 and partially extends to the outside of the first end 141; and an elastic device 16, which is placed in the liquid storage chamber 143 and includes a support seat 63 and an elastic member 62, the elastic member 62 is arranged in the second end 142, the support seat 63 has a first supporting end 631 and a second supporting end 632 opposite to each other, the first supporting end 631 abuts against the ball 12 and the second supporting end 632 restrainingly supports the elastic member 62, so that the ball 12 can move into the shell 14 to a liquid discharge position under the action of external force so as to bring out the liquid in the liquid storage chamber 143 by rolling the ball 12, and can automatically reset to a sealed position in sealed contact with the first end 141 by the elastic force of the elastic member 62.

[0038] Unless otherwise expressly indicated, the term "constrained" as used herein means that the second support end 632 of the support base, in addition to supporting the elastic member 62, also limits the freedom of movement of the elastic member 62, essentially allowing the elastic member 62 to extend or compress only along the centerline of the housing, thereby preventing the elastic member 62 from deflecting or shifting. Liquids referred to herein include, but are not limited to, detergent, mosquito repellent, perfume, and the like.

[0039] Figure 1 2. It is a schematic perspective view of the exploded structure of an embodiment of the ball rolling device of the present invention; Figure 2 is a front view of an embodiment of a ball rolling device of the present invention; Figure 3 It is along Figure 2 A cross-sectional view of an embodiment of the ball rolling device of the present invention taken along section line AA; Figure 4 It is along Figure 2 A cross-sectional view of an embodiment of the ball rolling device of the present invention taken along the section line BB. Figure 1-4As shown, in one or more embodiments, the ball bearing device 1 includes: a housing 14, an elastic device 16 housed within the housing 14, and a ball bearing 12 that is rollably positioned and partially disposed within one end of the housing 14. Due to the elastic force of the elastic device 16, the ball bearing 12 is pressed against the end of the housing 14 by the elastic device 16 in a sealed state. In a liquid-coated state, by applying an external force to the ball bearing 12, the ball bearing 12 is moved a predetermined amount within the housing 14 along the centerline of the housing 14 by the elastic device 16. Simultaneously, the ball bearing 12 rolls, thereby discharging liquid from the housing 14 through the surface of the ball bearing 12. Because the liquid is discharged through the surface of the ball bearing 12, the ball bearing device of the present invention can achieve uniform liquid discharge regardless of the magnitude of the applied external force or the viscosity of the liquid.

[0040] like Figure 1 and Figure 2 As shown, the housing 14 includes a first end 141, a second end 142, and a liquid storage chamber 143 located between the first end 141 and the second end 142. In one or more embodiments, the housing 14 is generally cylindrical, and the diameter of the housing 14 gradually increases from the first end 141 to the second end 142, so that the housing 14 has a certain taper to facilitate process molding. Alternatively, the housing 14 may also adopt other suitable shapes, such as a housing with an elliptical cross-section. Figure 2 and Figure 3 As shown, in one or more embodiments, a portion of the circumferential outer wall of the first end 141 is recessed inwardly by a predetermined distance along the radial direction to form a stepped end surface on the outer wall of the first end 141. Figure 2 and Figure 3 As shown, in one or more embodiments, a rib groove 412 is provided on the first end outer wall 141b, and the rib groove 412 is recessed radially inward around the outer circumference of the first end outer wall 141b. An annular protrusion 411 extending radially inward is provided on the first end inner wall 141a. A sealing ring 13 is mounted on the annular protrusion 411. A sealing ring groove 131 extending radially inward is provided around the outer circumference of the sealing ring 13. The sealing ring 13 is sleeved on the annular protrusion 411 with the aid of the sealing ring groove 131 to achieve a fixed connection between the sealing ring 13 and the first end 141. Alternatively, a radially outward recessed annular groove may be provided on the first end inner wall 141a, and the sealing ring 13 may be mounted in the annular groove.

[0041] like Figure 1 and Figure 4As shown, in one or more embodiments, a larger inner diameter portion 421 and a smaller inner diameter portion 422 are sequentially formed on the inner wall of the second end 142 from the outside to the inside (i.e., from the outermost portion of the second end along the centerline of the housing toward the interior of the housing). The inner diameter of the larger inner diameter portion 421 is larger than the inner diameter of the smaller inner diameter portion 422, and the inner diameter of the smaller inner diameter portion 422 is larger than the inner diameter of the liquid storage cavity 143. Therefore, the larger inner diameter portion 421, the smaller inner diameter portion 422, and the liquid storage cavity 143 form a stepped shape on the inner wall of the housing 14. A first annular retaining groove 423 is formed in the larger inner diameter portion 421, and the first annular retaining groove 423 is positioned near the smaller inner diameter portion 422. A second annular retaining groove 426 is formed in the smaller inner diameter portion 422, and the second annular retaining groove 426 is positioned near the liquid storage cavity 143.

[0042] like Figure 3 and Figure 4 As shown, a first radial protrusion 424 extending radially inward is provided on the larger inner diameter portion 421. Along the centerline of the housing 14, the first radial protrusion 424 is located outside the first annular retaining groove 423 and spaced a predetermined distance from the first annular retaining groove 423. There are at least two first radial protrusions 424, and the at least two first radial protrusions 424 are evenly distributed along the circumference of the larger inner diameter portion 421. In one or more embodiments, a plurality of positioning protrusions 425 are evenly distributed along the circumference of the first annular retaining groove 423. The positioning protrusions 425 extend from the first annular retaining groove 423 along the centerline of the housing 14 toward the outside of the second end 142.

[0043] like Figure 1 、 Figure 3 and Figure 4 As shown, in one or more embodiments, two arc-shaped threads 428 are further provided on the portion with a larger inner diameter 421. The two threads 428 are arranged along the circumference of the portion with a larger inner diameter 421. Along the direction of the center line of the shell 14, the threads 428 are located on the outside of the first radial protrusion 424 and are spaced apart from the first radial protrusion 424. Alternatively, the threads can be provided on the outer wall of the second end 142, or other suitable connecting structures, such as a snap-fit ​​structure, can be provided on the second end 142. Alternatively, the threads on the portion with a larger inner diameter 421 can be eliminated, and no connecting structure is provided. Through the above-mentioned thread structure or other suitable connecting structures, the ball rolling device of the present invention can be matched with other products, such as an electric drive device or a manual handle.

[0044] like Figure 3 and Figure 4As shown, a second radial protrusion 427 extending radially inward is provided on the smaller inner diameter portion 422. Along the centerline of the housing 14, the second radial protrusion 427 is located outside the second annular retaining groove 426 and is spaced a predetermined distance from the second annular retaining groove 426. There are at least two second radial protrusions 427, and the at least two second radial protrusions 427 are evenly distributed along the circumference of the smaller inner diameter portion 422.

[0045] like Figure 1 and Figure 3-4 As shown, in one or more embodiments, the ball 12 is a hollow spherical structure. Alternatively, the ball 12 is a solid structure made of a suitable material. Alternatively, the ball may be a sphere of other suitable shapes, for example, an elliptical spherical structure. The ball 12 is arranged in the first end 141 and extends partially outward from the first end 141 along the centerline of the housing 14. The maximum diameter of the ball 12 is larger than the inner diameter of the annular protrusion 411 on the first end so as to constrain the ball 12 within the first end 141. In the sealed state, the surface of the ball 12 forms a sealed contact with the inner ring of the sealing ring 13.

[0046] like Figure 1 and Figure 3-4 As shown, in one or more embodiments, a removable protective cover 11 is provided at the first end 141. The protective cover 11 is a generally hemispherical shell structure with an annular rib 412. The protective cover 11 is connected to a rib groove 412 provided on the first end 141 via the annular rib 412. The outer surface of the protective cover 11 conforms to the outer surface of the first end 141 of the shell 14, and a cavity is provided within the protective cover 11 that is sufficiently large to accommodate the portion of the ball 12 that extends beyond the first end 141.

[0047] like Figure 1 and Figure 3-4 As shown, in one or more embodiments, the elastic device 16 includes a support seat 63, an elastic member 62, and a support cover 61. One end of the elastic device 16 is fixed in the second end 142 through the support cover 61, and the other end thereof is pressed against the ball bearing 12 through the support seat 63. By arranging the elastic member 62 between the support cover 61 and the support seat 63, the elastic device 16 has an elastic function. Alternatively, the elastic device 16 only includes the elastic member 62 and the support seat 63. One end of the support seat 63 is directly matched with the second end 141 of the housing 14 to constrain the elastic member 62 to be supported in the second end 141. The elastic member 62 is, for example, a compressible spring with a predetermined elastic force or other suitable elastic mechanism.

[0048] Figure 5 1 is a perspective view of an embodiment of the support base of the ball rolling device of the present invention. Figure 1-5As shown, in one or more embodiments, the support seat 63 includes a first support end 631, a second support end 632, and a connecting rod 633 connecting the first support end 631 and the second support end 632. In one or more embodiments, the connecting rod 633 is a long strip structure. Optionally, the middle part of the connecting rod 633 is a roughly cylindrical body, and two rectangular reinforcing ribs extend radially outward on both sides of the cylinder. Alternatively, the connecting rod 633 can be configured to have a structure with a cross-section of other suitable shapes. The support seat 63 abuts against the ball bearing 12 through the first support end 631, and supports the elastic member 62 in a restrained manner through the second support end 632.

[0049] like Figure 3-Figure 5 As shown, the first support end 631 is provided with a ball seat 636. The ball seat 636 extends from the end surface of the connecting rod 633 along the centerline toward the ball 12, gradually increasing in diameter, forming a tapered seat to match the spherical surface of the ball 12. The small-diameter end of the ball seat 636 is closed, and its large-diameter end is open to form a ball abutment edge 638. In the assembled state, the ball 12 is connected to the first support end 631 via the ball abutment edge 638. Two rectangular seat wall holes 637 are provided in the tapered wall of the ball seat 636. The two seat wall holes 637 are symmetrically arranged to ensure smooth flow of liquid in the liquid storage chamber 143, so that the spherical portion of the ball 12 within the liquid storage chamber 143 can be completely immersed in the liquid. Alternatively, the seat wall holes 637 can be provided as one or more, or can be configured in other suitable shapes, such as circular or polygonal.

[0050] like Figure 3-Figure 5 As shown, an elastic member seat 634 is provided on the second support end 632. The elastic member seat 634 extends from the corresponding end surface of the connecting rod 633 along the center line toward the second end 142, forming a generally cylindrical structure with one end closed and the other end open. The closed end of the elastic member seat 634 is connected to the connecting rod 633. The elastic member 62 can be accommodated in the elastic member seat 634. Rectangular bayonet holes 635 symmetrical to each other are provided on the circumferential wall of the elastic member seat 634. Each bayonet hole 635 has a predetermined width along the center line direction. Alternatively, the bayonet hole 635 can be set to other suitable shapes, for example, an elliptical shape.

[0051] Figure 6 FIG. 1 is a perspective view of an embodiment of a support cover of a ball rolling device according to the present invention. Figure 1-6As shown, in one or more embodiments, the support cap 61 includes a disk 611, a guide inner ring 612, a guide outer ring 613, and an annular groove 614 formed between the guide inner ring 612 and the guide outer ring 613. The diameter of the disk 611 is approximately the same as the inner diameter of the second annular retaining groove 426, and its thickness is approximately the linear distance from the second annular retaining groove 426 to the second radial protrusion 427 along the centerline. A central through-hole 616 is provided at the center of the disk 611. The disk 611 has an annular inner side 611a. The so-called "annular inner side" is the side that abuts the elastic member 62. The guide inner ring 612 extends inward from the annular inner side 611a around the central through-hole 616 along the centerline to a first predetermined height. The guide outer ring 613 is formed outside the guide inner ring 612. The guide outer ring 613 is spaced a predetermined distance from the guide inner ring 612 and is concentric with the guide inner ring 612. The guide outer ring 613 extends inward from the inner side surface 611a of the circular ring to a second predetermined height along the centerline and can be accommodated in the elastic member seat 634. A plurality of clearance grooves 618 are provided on the guide outer ring 613, dividing it into multiple segments. Any two symmetrical segments are provided with claws 615. The claws 615 protrude radially outward from the outer circumference of the guide outer ring 613 to mate with the retaining holes 635. The maximum displacement of each claw 615 along the centerline within the corresponding retaining hole 635 is equal to the width of the retaining hole 635 along the centerline. An annular groove 614 is formed between the guide inner ring 612 and the guide outer ring 613 to accommodate the elastic member 62. The annular groove 614, through the guide inner ring 612 and the guide outer ring 613, limits the radial movement of the elastic member 62 and secures the elastic member 62 within the annular groove 614. Alternatively, annular groove 614 is replaced by a columnar body that allows elastic member 62 to be inserted thereon. Alternatively, support cap 61 is formed into a cylindrical structure, and elastic member seat 634 is formed with a structure that matches the cylindrical structure, including an inner guide ring, an outer guide ring, and an annular groove. Multiple circumferential through-holes 617 are provided around central through-hole 616 on disk 611, creating a hollowed-out shape and facilitating the flow of liquid between its two sides.

[0052] like Figure 1-6As shown, the support cover 61 is fixedly connected to the second end 142 by fixing the disc 611 between the second annular limiting groove 426 and the second radial protrusion 427. The elastic member 62 is accommodated in the annular groove 614 of the support cover 61 and the elastic member seat 634 of the support seat 63. The support cover 61 and the support seat 63 are connected by the claw 615 and the bayonet 635. Because the claw 615 can have a relative displacement along the center line in the bayonet 635, the support seat 63 has a predetermined amount of movement relative to the support cover 61 fixed in the second end 142. In the sealed state, the elastic device 16 can use the elastic force of the elastic member 62 to press the ball 12 against the sealing ring 131 through the support seat 63, forming a sealed contact with the sealing ring 13. In the liquid coating state, the elastic device 16 can be compressed to the liquid discharge position by the ball 12 under pressure through the support seat 63.

[0053] Figure 7 is a first perspective schematic diagram of an embodiment of a sealing cover of a ball rolling device of the present invention; Figure 8 FIG. 2 is a second perspective view of an embodiment of the sealing cover of the ball rolling device of the present invention. Figure 1-4 and Figure 7-8As shown, in one or more embodiments, a sealing cap 15 is provided at the second end 142 to seal the second end 142. The sealing cap 15 includes a circular cap body 51 and a circumferential wall 52. The cap body 51 has opposing inner and outer sides 51a and 51b, with the inner side 51a facing the liquid storage chamber 143. The cap body has a diameter that is substantially the same as the inner diameter of the smaller inner diameter portion 422, with a diameter d. The circumferential wall 52 has opposing upper and lower edges 52b and 52a. A sealing groove 53 is provided around the outer periphery of the circumferential wall 52, near the lower edge 52a. Two radial cap protrusions 54 are provided around the outer periphery of the circumferential wall 52, near the upper edge 52b and extending radially outward. The two radial cap protrusions 54 are symmetrical relative to the center of the sealing cap 15. Alternatively, more than two radial cap protrusions, such as three or four, may be provided on the circumferential wall 52, with the radial cap protrusions spaced equidistantly from each other. The diameter of the radial cover protrusion 54 is approximately the same as the inner diameter of the larger inner diameter portion 423, and is defined as diameter D. The sealing cover 15 is secured between the first annular retaining groove 423 and the first radial protrusion 424 via the radial cover protrusion 54. The sealing cover 15 forms a seal with the first end via the sealing ring 14 installed in the sealing groove 53. The radial cover protrusion 54 on the sealing cover 15 creates edges with varying diameters near the upper edge 52b, thereby preventing interference with the threads 428 during installation. A first radial protrusion groove 541, with a circumferential length no less than that of the first radial protrusion 424, is provided in the middle of the radial cover protrusion 54. This allows the first radial protrusion groove 541 to prevent interference with the first radial protrusion 424 during installation. To facilitate installation, the upper edge 52b is configured as a shaped edge with varying diameters. The sealing cover 15 can be installed and removed by rotating the shaped upper edge 52b. To ensure the sealing cover 15 remains stable in its installed position, the radial cover protrusion 54 is provided with a plurality of positioning grooves 542 that mate with the positioning protrusions 425. These positioning grooves 542 effectively maintain the radial cover protrusion 54 between the first annular retaining groove 423 and the first radial protrusion 424, allowing the sealing cover 15 to remain in its installed position, thereby sealing the second end 141 and forming a closed liquid storage chamber 143 between the closed first end 141 and the closed second end 142. Alternatively, if the second end 142 lacks the threads 428, the upper edge 51b can be circular to coincide with the inner diameter of the larger diameter portion 423. To facilitate installation and removal of the sealing cover 15, a handle 55 extending outward along the centerline is provided at the center of the outer side surface 51b of the cover. The handle 55 is generally plate-shaped. Alternatively, the handle 55 can have other suitable shapes, such as a cylinder.

[0054] like Figure 1-4As shown, in one or more embodiments, the ball-moving device 1 seals the second end 142 with a sealing cap 15 equipped with a sealing ring 17. The ball 12 compresses the sealing ring 13 on the first end 141, sealing the first end 141 and forming a closed liquid storage chamber 143 between the closed first end 141 and the closed second end 142. The elastic device 16 disposed within the liquid storage chamber is secured to the second end 142 via a disc 611 on the support cap 61, and abuts against the ball 12 via a ball abutment edge 638 on the support seat 63. When the ball-moving device 1 is not in use, the ball 12, pressed by the elastic device 16, maintains the sealing ring in a sealed state, and the protective cap 11 is installed to prevent contamination. When the ball-moving device 1 is in use, the protective cap 11 is removed, and the ball 12 is rolled to position the liquid discharge between the ball 12 and the sealing ring 13, thereby creating an appropriate gap between the ball 12 and the sealing ring 13. The rolling ball 12 allows the liquid in the liquid storage chamber 143 to be carried out through the ball surface. Due to the limited gap between the ball 12 and the sealing ring 13, the liquid on the ball surface first passes through the contact surface between the sealing ring 13 and the ball 12. This means that any uneven liquid on the surface of the ball 12 is first scraped and evenly distributed by the sealing ring 13 before being applied to the desired area. This can greatly improve the uniformity of the liquid coating of the ball device.

[0055] In an alternative embodiment, the roller ball 12 in the roller device 1 can be configured as a spherical ball with a rough surface, which is suitable for discharging high-viscosity liquids. Since high-viscosity liquids have poor fluidity and do not adhere easily to smooth surfaces, increasing the roughness of the roller ball 12 allows the high-viscosity liquid to be discharged through the rough surface of the roller ball 12.

[0056] In an alternative embodiment, the ball 12 in the ball device 1 can be configured as a spherical ball with a smooth surface, suitable for discharging low-viscosity liquids. Low-viscosity liquids have good fluidity, but due to the poor sealing effect between the rough surface and the sealing ring 13, the low-viscosity liquid may leak through the rough surface. Therefore, a smooth ball 12 is required to enhance the sealing effect between the ball 12 and the sealing ring 13.

[0057] In an alternative embodiment, the roller device 1 is equipped with two replaceable rollers 12 , a roller ball 12 a with a rougher surface and a roller ball 12 b with a smoother surface, to meet the needs of using liquids with different viscosities.

[0058] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is clearly not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may combine the technical features of different embodiments, or make equivalent changes or substitutions to related technical features. The technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A ball rolling device, characterized in that: The ball rolling device comprises: a housing comprising a first end, a closable second end, and a liquid storage cavity located between the first end and the second end; a roller ball configured as a spherical body rollably disposed in the first end and partially extending outside the first end; and an elastic device disposed in the liquid storage chamber and comprising a support seat and an elastic member, the elastic member being arranged in the second end, the support seat having a first supporting end and a second supporting end opposite to each other, and a connecting rod connecting the first supporting end and the second supporting end, the first supporting end abutting against the ball and the second supporting end restrainingly supporting the elastic member, so that the ball can move into the housing to a liquid discharge position under the action of an external force so as to discharge liquid from the liquid storage chamber by rolling the ball, and can automatically return to a sealed position in sealed contact with the first end by the elastic force of the elastic member; A ball seat is provided at the first supporting end, and the ball seat extends from the end surface of the connecting rod along the center line toward the ball with a gradually increasing diameter, forming a conical seat to match the spherical surface of the ball.

2. The ball rolling device according to claim 1, characterized in that: An annular protrusion extending radially inward is provided on the inner wall of the first end. A sealing ring is mounted on the annular protrusion. The sealing ring is configured to form a sealing contact with the surface of the ball in the sealing position.

3. The ball rolling device according to claim 1, characterized in that: The roller ball device further includes a protective cover configured to be removably fixed to the first end and to cover a portion of the roller ball extending outside the first end.

4. The ball rolling device according to claim 1, characterized in that: The ball rolling device includes a sealing cover that can form a sealing connection with the second end, and the elastic member is arranged between the sealing cover and the second supporting end.

5. The ball rolling device according to claim 4, characterized in that: A support cover is further provided between the sealing cover and the elastic member. The support cover can be installed on the inner wall of the second end at a distance from the sealing cover and abut against the elastic member.

6. The ball rolling device according to claim 5, characterized in that: The inner wall of the second end has a smaller inner diameter portion and a larger inner diameter portion located outside the smaller inner diameter portion, a first annular limiting groove is provided in the larger inner diameter portion, and a second annular limiting groove is provided in the smaller inner diameter portion, the sealing cover is configured to be clamped in the first annular limiting groove, and the support cover is configured to be clamped in the second annular limiting groove.

7. The ball rolling device according to claim 6, characterized in that: The sealing cover is formed with a plurality of radial cover protrusions spaced apart from each other along its circumference, and a first radial protrusion that can match the corresponding radial cover protrusion is formed along its circumference in the portion with the larger inner diameter to fix the radial cover protrusion in the first annular limiting groove, wherein the inner diameter of the first radial protrusion is larger than the outer diameter of the radial cover protrusion.

8. The ball rolling device according to claim 5, characterized in that: The support cover comprises: a disc, wherein a central through hole is provided on the disc; a guide inner ring configured to extend inwardly from an inner side surface of the disk to a first predetermined height along a center line of the housing around the central through hole; A guide outer ring configured to be concentric with the guide inner ring and extending inwardly from the inner side surface along the center line to a second predetermined height; and An annular groove is formed between the guide outer ring and the guide inner ring to receive a portion of the elastic member.

9. The ball rolling device according to claim 8, characterized in that: A deformable claw is provided on the guide outer ring; and The second supporting end is configured as an elastic member seat having a circumferential wall extending toward the second end, a bayonet for accommodating the claw is provided on the circumferential wall, and the claw is configured to be movable relative to the bayonet along the center line direction of the shell.

10. The ball rolling device according to claim 1, characterized in that: A connecting mechanism is provided on the second end, and the connecting mechanism is configured to be connected to an external predetermined device.

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