Fluid supply cup and cup cover thereof

Abstract

A fluid supply cup and a cup cover thereof. The cup cover comprises a cover body (1); a tubular connecting portion (2) is provided at the top of the cover body (1); the tubular connecting portion (2) is configured to be connected to a connecting portion of a spray gun or an adapter screw; the cover body (1) comprises a side wall (4) extending from a side edge (3) to the tubular connecting portion (2); at least one screwing component or at least one screwing area (6) is provided on the outer surface of the side wall (4); the cup cover is combined with or separated from a fluid supply cup body by means of the screwing component or the screwing area (6).

Description

Fluid supply cup and cup cover thereof Technical Field

[0001] The invention relates to a fluid supply for a paint spray gun, and in particular to a fluid supply cup and a cup cover thereof. Background Art

[0002] A liquid supply device (also called a fluid supply cup) generally refers to a paint spray cup. This fluid supply cup is used to store paint and, when used, connects to a spray gun to spray the paint inside. There are two main types of fluid supply cups on the market: one consisting of a cup body and a lid; the other consisting of a rigid outer cup, an inner liner, a lid, and a threaded retaining ring.

[0003] The lid of a conventional fluid supply cup has a generally smooth surface, making it easier for operators to clean the lid if it gets stained with paint. However, Chinese utility model patent No. 202122492058.0, entitled "Liquid Supply Device for Spraying Equipment," discloses a fluid supply cup comprising only an outer cup, an inner liner, and a lid. The patent discloses that the dome-shaped portion has several recessed areas arranged on its circumference to ergonomically match finger positions. Operators can grip these recessed areas and twist the lid, tightening the spiral wedge element and the spiral wedge-shaped slot together.

[0004] However, its overall structure is large and heavy, with one lid weighing about twenty grams. Since the fluid supply cup used for repair is basically a thin-walled product, the above patent uses a dome-shaped protrusion, which causes the overall height of the lid to be too high. After the lid is connected to the rigid cup body and assembled with the spray gun, the dome is easily deformed when the spray gun is pressed down, causing the paint in the cup body to overflow. Moreover, it adopts the method of setting a depression around the dome. When the depression is stained with paint, a lot of cleaning agent is wasted to clean it, which is difficult to clean, resulting in an unsightly overall appearance of the cup body. Moreover, if the paint in the depression drips onto the spraying surface during the spraying process, the spraying surface will need to be reworked, causing great waste. The use of a special-shaped structure with depressions around the dome greatly increases the difficulty of mold opening and increases the cost of mold opening.

[0005] Therefore, the prior art is subject to further improvement and development.

[0006] Summary of the Invention

[0007] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a fluid supply cup and a cup lid thereof, which can reduce the production cost and facilitate cleaning of dirt on the lid while making it convenient for users to tighten the lid.

[0008] In order to solve the above technical problems, the present invention includes:

[0009] A cup cover for a fluid supply cup includes a cover body, a tubular connecting portion provided on the top of the cover body, the tubular connecting portion being used to connect to a connecting portion of a spray gun or an adapter screw, and a side wall extending from a side edge toward the tubular connecting portion, wherein at least one screwing member or at least one screwing area is provided on an outer surface of the side wall, and the cup cover is connected to or separated from the fluid supply cup by the screwing member or the screwing area.

[0010] In the cup cover, the screwing member is a protrusion on the side wall, the protrusion is fin-shaped, and the protrusion extends along the outer surface of the side wall.

[0011] In the cup cover, the upright part of the fin-shaped protrusion is adapted to fit the fingers or palm of the human body.

[0012] The cup cover, wherein two or an even number of screwing members are evenly arranged on the outer surface of the side wall;

[0013] Alternatively, three or an odd number of screwing components are evenly arranged on the outer surface of the side wall.

[0014] The cup cover has two fins evenly arranged on the outer surface of the side wall, and the fins extend from the side of the cover body toward the tubular connecting portion.

[0015] The cup cover, wherein the front end of the fin extends all the way to the root of the tubular connecting portion in the form of a reinforcing rib.

[0016] The cup cover, wherein the side wall of the cover body bulges upward at a certain distance from the side edge, the bulge portion extends toward the tubular connecting portion, the side wall forms a shoulder at the bulge, and the fin-shaped protrusion extends at least from the side edge to the shoulder.

[0017] The cup cover, wherein the fins are raindrop-shaped, streamlined, bent, H-shaped, wing-shaped, fin-shaped or frame-shaped.

[0018] In the cup cover, the screwing member is a depression on the side wall, and the depression extends along the outer surface of the side wall.

[0019] The cup cover, wherein the screwing area is formed by a frosted surface, a plurality of wavy patterns, a plurality of protrusions or a plurality of concave points.

[0020] The cup cover has connecting protrusions evenly arranged on the tubular connecting portion, and vertically arranged upright blocks are respectively provided at both ends of the connecting protrusions, and the upper ends of the upright blocks are located on the same circumference.

[0021] A fluid supply cup having the above-mentioned cup cover, the fluid supply cup comprising a rigid outer cup and the above-mentioned cup cover, wherein a plurality of spiral wedge-shaped elements are evenly arranged on the side of the cover; a plurality of spiral wedge-shaped slots are evenly arranged on the upper edge of the inner wall of the rigid outer cup; the spiral wedge-shaped elements and the spiral wedge-shaped slots are adapted and correspond one to one;

[0022] The spiral wedge-shaped element is screwed into the spiral wedge-shaped slot by applying force through the screwing member or the screwing area, and the cup cover is coupled to the rigid outer cup.

[0023] The present invention provides a fluid supply cup and a cup lid thereof, which add at least one screwing component or at least one screwing area on the cover body, generally using two evenly arranged fins to achieve this. The weight of a lid can be about seventeen grams, which can reduce the cost by 10%-15%. The injection mold is simple to make and the complexity is significantly reduced, which can minimize the mold opening cost. Moreover, the fins protrude directly from the surface of the cup cover, and the probability of being contaminated by paint is very small. Even if the fins are contaminated with paint, the operator can quickly clean them with a rag or related tools. Moreover, the operator can first place the cup lid on the rigid cup body, rotate the cup lid by the screwing component or the screwing area, quickly combine the cup lid with the rigid cup body, and then connect it to the spray gun, which is convenient for user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic diagram of a cup cover and a fluid supply cup according to the present invention;

[0025] FIG2 is a schematic diagram of a cup cover according to the present invention;

[0026] FIG3 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0027] FIG4 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0028] FIG5 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0029] FIG6 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0030] FIG7 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0031] FIG8 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0032] FIG9 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0033] FIG10 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0034] FIG11 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0035] FIG12 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0036] FIG13 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0037] FIG14 is a schematic diagram of another embodiment of a cup cover according to the present invention;

[0038] FIG15 is a schematic diagram of another embodiment of a cup cover according to the present invention. DETAILED DESCRIPTION

[0039] The present invention provides a fluid supply cup and a cup cover thereof. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0040] The present invention provides a cup cover for a fluid supply cup as shown in Figures 1, 2, 14 and 15, which includes a cover body 1, a tubular connecting portion 2 is provided on the top of the cover body 1, and the tubular connecting portion 2 is used to connect to the connecting portion or adapter screw of the spray gun (the spray gun and the adapter screw can be found in relevant materials and are not described in detail here), the cover body 1 includes a side wall 4 extending from the side edge 3 to the tubular connecting portion 2, the side edge 3, the side wall 4 and the tubular connecting portion 2 form a complete cup cover, the cup cover is used to seal the upper part of the fluid supply cup, and the paint in the fluid supply cup enters the corresponding part of the spray gun through the tubular connecting portion 2 for subsequent operation, especially at least one screwing member or at least one screwing area 6 is provided on the outer surface of the side wall 4, and the operator combines or separates the cup cover and the fluid supply cup through the screwing member or the screwing area 6. In actual use, two or more screwing members or screwing areas 6 are generally provided to adapt to the ergonomics of the human hand, thereby increasing the friction between the operator's fingers or palm and the outer surface of the lid body 1, thereby driving the rotation of the cup lid. The cup lid and the fluid supply cup are connected together by rotation or rotation. The specific connection method can be a spiral wedge and spiral groove method, an internal thread and external thread method, or a method of multiple internal thread segments and multiple external thread segments. Of course, other methods can also be used and will not be detailed here.

[0041] In another preferred embodiment of the present invention, as shown in Figures 2-13, the screwing member is a protrusion 8 on the side wall. This protrusion 8 is fin-shaped and extends along the outer surface of the side wall 4. The extension length can be determined as needed. As shown in Figure 13, the protrusion 8 can extend along the circumference of the side wall 4, and the operator can grip the circumferential tip of the fin with their fingers to rotate it. Alternatively, it can extend from the side edge 3 toward the tubular connecting portion 2, and the configuration can be customized based on user preference. When the fin-shaped arrangement is used, as shown in Figures 2, 3, 4, and 5, as the user applies pressure to the fin portion, the cup lid and the fluid supply cup are gradually tightened. When the cup lid and the fluid supply cup are fully tightened, continued pressure on the fin portion causes a slight deformation of the fin portion, providing the operator with a tactile feedback indicating that the cup lid is locked. Without further observation, the operator can determine that the cup lid and the fluid supply cup are securely connected, allowing them to proceed more quickly to the next step.

[0042] More preferably, as shown in Figures 3, 4, and 5, the upright portion 9 of the fin-shaped protrusion 8 is adapted to the fingers or palm of the human body, and the specific shape of the upright portion 9 can be set according to the user's operating habits. The use of the upright portion 9 can further enhance the operator's tactile sensation during operation, and the deformation of the upright portion 9 can be set according to the operator's operating habits to enhance the operator's user experience.

[0043] Of course, it is also possible to evenly arrange two or an even number of screwing members on the outer surface of the side wall 4, as shown in Figures 3 to 13, based on the operator's operating habits; or evenly arrange three or an odd number of screwing members on the outer surface of the side wall 4. Generally speaking, two, three, or four screwing members on the lid body 1 can meet user needs. If only one screwing member is provided, the operator may easily cause uneven force on the cup lid during actual operation. Specifically, at least two screwing members, i.e., fin-shaped protrusions 8, are generally provided.

[0044] In a more preferred embodiment, as shown in Figures 2, 3, and 4, two fin protrusions 8 are evenly arranged on the outer surface of the side wall 4. The fins extend from the side edge 3 of the cover body 1 toward the tubular connecting portion 2, and they coincide with the touch of the operator's fingers. Moreover, the front ends of the fin protrusions 8 extend all the way to the root of the tubular connecting portion 2 in the form of reinforcing ribs 10, and the two fin protrusions 8 are located in the same vertical plane. In other words, the two fin protrusions 8 are arranged at 180 degrees on the outer surface of the cover body 1, that is, they are evenly arranged. If there are three fin protrusions 8, they are arranged at 120 degrees on the outer surface of the cover body 1, and so on. Because after the cup cover is fastened to the fluid supply cup, the cup cover needs to be assembled to the spray gun or the adapter screw. When the cup cover is connected to the spray gun, the spray gun needs to be pressed down. The extension of the reinforcing rib 10 can greatly improve the strength of the cover body 1, especially the support for the root of the tubular connecting part 2, thereby preventing the deformation of the cover body 1 during the assembly process and avoiding paint overflow from the tubular connecting part 2.

[0045] In another preferred embodiment of the present invention, as shown in Figures 7 to 12, the side wall of the lid body 1 bulges upward at a certain distance from the side edge 3, and the raised portion 11 extends toward the tubular connecting portion 2. The side wall 4 forms a shoulder 12 at the raised portion 11. The fin-shaped protrusion 8 extends at least from the side edge 3 to the vertical surface of the shoulder 12. The role played by the fin-shaped protrusion 8 is the same as described above. The fin-shaped protrusion 8 also has the function of supporting the raised portion 11, thereby improving the overall strength of the cup lid. It will not be repeated here. Obviously, the fin-shaped protrusion 8 can also extend all the way to the root of the tubular connecting portion 2 in the above-mentioned form. Of course, corresponding fin protrusions 8 can also be provided around the vertical surface of the shoulder 12 to achieve the above-mentioned role.

[0046] Furthermore, as shown in Figures 2-13, the fins can be shaped like raindrops, streamlines, bends, H-shaped, airfoils, fins, or frames, but are not limited to the above shapes. The appropriate shape can be selected based on the operator's operating habits. For example, with frame-shaped fins, a recess can be formed in the middle of the frame, and the operator can insert a finger into the recess to operate, or clamp a finger or palm on the outside or inside of the fin to operate. Of course, the operation of the frame-shaped fins can also be used for the bends and H-shaped fins.

[0047] Obviously, the screwing member can also adopt other structural forms. For example, as shown in FIG6 , it can be a recess 13 on the side wall 4. The recess 13 extends along the outer surface of the side wall 4 to form a grip portion. The operator can push the grip portion or clamp the inner wall of the grip portion with their fingers to operate the cup lid. Of course, the shape of the recess 13 can also be designed according to the operator's habits, such as trapezoidal, square, circular, etc., which will not be repeated here.

[0048] Obviously, a screwing area 6 can also be used instead of a screwing member. This mainly increases friction to achieve operation of the cup lid, but its operation effect is slightly inferior to that of a screwing member such as a fin. As shown in Figures 14 and 15, the screwing area 6 can be formed by a frosted surface, multiple wavy patterns, multiple protrusions or multiple concave points. Of course, other shapes can also be used to achieve this, which will not be detailed here.

[0049] Furthermore, as shown in Figure 5, the tubular connecting portion 2 is evenly distributed with connecting protrusions 17. Vertically arranged upright blocks 18 are provided at both ends of the connecting protrusions 17. The upper ends of the upright blocks 18 are located on the same circumference to improve the connection efficiency between the cover 1 and the spray gun or adapter screw. Of course, the connecting protrusions 17 can also be implemented in other shapes such as T-shaped or spiral wedge-shaped connecting pieces, as shown in Figures 3, 7, and 8.

[0050] The present invention also provides a fluid supply cup having the above-mentioned cup cover. As shown in FIG1 , the fluid supply cup includes a rigid outer cup 19 and the above-mentioned cup cover. A plurality of spiral wedge-shaped elements 20 are evenly arranged on the side of the cover 1; a plurality of spiral wedge-shaped slots are evenly arranged on the upper edge of the inner wall of the rigid outer cup 19; the spiral wedge-shaped elements 20 are adapted to and correspond to the spiral wedge-shaped slots one by one;

[0051] The spiral wedge-shaped element 20 is screwed into the spiral wedge-shaped groove by applying force through the screwing member or the screwing area 6 , and the cup cover is coupled to the rigid outer cup 19 .

[0052] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A cup cover for a fluid supply cup, comprising a cover body, a tubular connecting portion is arranged on the top of the cover body, the tubular connecting portion is used to connect with a connecting portion or an adapter screw of a spray gun, the cover body comprises a side wall extending from a side edge to the tubular connecting portion, characterized in that: At least one screwing member or at least one screwing area is arranged on the outer surface of the side wall, and the cup cover is combined with or separated from the fluid supply cup through the screwing member or the screwing area.

2. The cup cover according to claim 1, characterized in that: The screwing member is a protrusion on the side wall, the protrusion is in a fin shape, and the protrusion extends along the outer surface of the side wall.

3. The cup cover according to claim 2, characterized in that: The upright part of the fin-shaped protrusion is adapted to the fingers or palm of the human body.

4. The cup cover according to claim 1, characterized in that: Two or an even number of screwing components are evenly arranged on the outer surface of the side wall; Alternatively, three or an odd number of screwing components are evenly arranged on the outer surface of the side wall.

5. The cup cover according to claim 2, characterized in that: Two fins are evenly arranged on the outer surface of the side wall, and the fins extend from the side edge of the cover body toward the tubular connecting portion.

6. The cup cover according to claim 5, characterized in that: The front end of the fin is extended to the root of the tubular connecting part in the form of a reinforcing rib.

7. The cup cover according to claim 2, characterized in that: The side wall of the cover body bulges upward at a certain distance from the side edge, and the bulge extends toward the tubular connecting portion. The side wall forms a shoulder at the bulge, and the fin-shaped protrusion extends at least from the side edge to the shoulder.

8. The cup cover according to claim 2, characterized in that: The fins are raindrop-shaped, streamlined, bent, H-shaped, airfoil-shaped, fin-shaped or frame-shaped.

9. The cup cover according to claim 1, characterized in that: The screwing member is a depression on the side wall, and the depression extends along the outer surface of the side wall.

10. The cup cover according to claim 1, characterized in that: The screwing area is formed by a frosted surface, a plurality of wavy patterns, a plurality of protrusions or a plurality of concave points.

11. The cup cover according to claim 1, characterized in that: The tubular connecting portion is evenly provided with connecting protrusions, and both ends of the connecting protrusions are respectively provided with vertically arranged upright blocks, and the upper ends of the upright blocks are located on the same circumference.

12. A fluid supply cup having a cup cover as claimed in any one of claims 1 to 11, the fluid supply cup comprising a rigid outer cup and the cup cover, characterized in that: A plurality of spiral wedge-shaped elements are evenly arranged on the side of the cover body; a plurality of spiral wedge-shaped slots are evenly arranged on the upper edge of the inner wall of the rigid outer cup; the spiral wedge-shaped elements are matched with the spiral wedge-shaped slots and correspond one to one; The spiral wedge-shaped element is screwed into the spiral wedge-shaped groove by applying force through the screwing member or the screwing area, and the cup cover is connected with the rigid outer cup.

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