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

TECHNICAL FIELD

[0001] The present disclosure relates to fluid supply for paint spray guns, in particularly to a fluid supply cup and a cup cover thereof.BACKGROUND

[0002] Liquid supply devices (also known as fluid supply cups) generally refer to paint spray cups, which are used to store paint. When in use, the fluid supply cup is connected to a paint spray gun to spray the paint inside the fluid supply cup. There are two main types of fluid supply cups on the market: one is composed of a cup body and a cup lid, and the other is composed of a rigid outer cup, an inner lining, a cup lid, and a thread fixing ring.

[0003] In the prior art, the cup lid for the fluid supply cup has a substantially smooth surface, which facilitates cleaning by an operator when the cup lid is stained with the paint. A Chinese utility model patent with its patent number of 202122492058.0 and its name of A Liquid Supply Apparatus For Spray Device discloses a fluid supply cup with only an outer cup, an inner lining, and a cup lid. In the patent, multiple concave portions are arranged on a circumference surface of a dome portion, and the concave portions are matched with the ergonomics of a finger portion. The operator can grip the concave portions with fingers and twist the lid to fasten a spiral wedge element and a spiral wedge groove together.

[0004] However the fluid supply cup has a larger overall structure and a higher mass, with the mass of the lid being about 20 grams. Due to the fact that the fluid supply cup used for repair is a substantially thin-walled product, the above-mentioned patent adopts a dome-type protrusion to make the overall height of the cup lid to be too high. During the assembly of the lid and a rigid cup body with the spray gun after the lid and the rigid cup body are connected, when the spray gun is pressed down, it is easy for the dome to deform and the paint inside the cup body to overflow. Moreover, the patent adopts the method of arranging the concave portions around the dome, such that a lot of cleaning agents are required to perform cleaning after the concave portions are stained with the paint, making it difficult to clean thoroughly, resulting in an overall unattractive appearance of the cup body. Moreover, if the paint in the concave portions drips onto a spraying surface during a spraying process, it will cause the spraying surface to be reworked, resulting in great waste. The adoption of the distinctive structure of the concave portions being arranged on the circumference surface of the dome greatly increases the difficulty of mold fabrication and raises the cost of mold fabrication.

[0005] Therefore, the prior art needs to be further improved and developed.SUMMARY

[0006] In view of the above-mentioned defects of the prior art, the present disclosure aims to provide a fluid supply cup and a cup lid therefor, which can reduce the production cost and facilitate the cleaning of dirt on the lid while making it convenient for users to twist the lid.

[0007] To solve the above-mentioned technical problems, technical solutions of the present disclosure are as follows.

[0008] A cup lid for a fluid supply cup, includes a lid body, where a top part of the lid body is arranged with a tubular connecting portion, the tubular connecting portion is configured to be connected to a connection part of a spray gun or an adapter screw of the spray gun, the lid body includes a side wall extending from a side edge towards the tubular connecting portion, at least one twisting component or at least one twisting area is arranged on an outer surface of the side wall, and the cup lid is combined or separated from the fluid supply cup through the twisting component or the twisting area.

[0009] In the cup lid, the twisting component is a protrusion on the side wall, the protrusion is fin shaped and extends along the outer surface of the side wall.

[0010] In the cup lid, a vertical upright portion of the fin-shaped protrusion is adapted to a finger or palm of a human body.

[0011] In the cup lid, two or an even number of the twisting components are uniformly arranged on the outer surface of the side wall; or three or an odd number of the twisting components are uniformly arranged on the outer surface of the side wall.

[0012] In the cup lid, two fins are uniformly arranged on the outer surface of the side wall, and the fins extend from the side edge of the lid body towards the tubular connecting portion.

[0013] In the cup lid, a front end of the fin extends to a root part of the tubular connecting portion in a form of a reinforcing rib.

[0014] In the cup lid, the side wall of the lid body protrudes upward at a certain distance from the side edge, a protruding part extends towards the tubular connecting portion, the side wall forms a shoulder portion on the protruding part, and the fin-shaped protrusion extends at least from the side edge to the shoulder portion.

[0015] In the cup lid, the fin is raindrop shaped, streamline shaped, bending shaped, H shaped, wing shaped, fin shaped, or frame shaped.

[0016] In the cup lid, the twisting component is a recess on the side wall, and the recess extends along the outer surface of the side wall.

[0017] In the cup lid, the twisting area is formed by a frosted surface, a plurality of wavy patterns, a plurality of convex points, or a plurality of concave points.

[0018] In the cup lid, the tubular connecting portion is uniformly arranged with connecting protrusions, upright blocks are respectively vertically arranged at two ends of the connecting protrusion, and upper ends of the upright blocks are located on one identical circumference.

[0019] The fluid supply cup having the cup lid as described above, includes a rigid outer cup and the cup lid, where a plurality of spiral wedge-shaped elements are uniformly arranged on the side edge of the lid body, a plurality of spiral wedge-shaped grooves are uniformly arranged on an upper edge of an inner wall of the rigid outer cup, the spiral wedge-shaped element and the spiral wedge-shaped groove are adapted and in a one-to-one correspondence; by applying force through the twisting component or the twisting area, the spiral wedge-shaped element is screwed into the spiral wedge-shaped groove, and the cup lid is connected to the rigid outer cup.

[0020] In the fluid supply cup and cup lid therefor provided by the present disclosure, at least one twisting component or at least one twisting area is added to the lid body, which is generally achieved by adopting two uniformly arranged fins. The mass of one lid is about 17 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 cost of mold fabrication. Moreover, the fin protrudes directly from a surface of the cup lid, resulting in that the probability of paint staining is very small. Even if the fin is stained with paint, an operator can quickly clean the fin with a cloth or related tools. The operator can first place the cup lid on a rigid cup body, then rotate the cup lid through the twisting component or the twisting area, so as to combine the cup lid with the rigid cup body, and then connect it to the spray gun, which is convenient for users to operate.BRIEF DESCRIPTION OF DRAWINGS

[0021] FIG. 1 is a schematic diagram of a cup lid and a fluid supply cup in the present disclosure. FIG. 2 is a schematic diagram of the cup lid in the present disclosure. FIG. 3 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 4 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 5 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 6 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 7 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 8 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 9 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 10 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 11 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 12 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 13 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 14 is a schematic diagram of another embodiment of the cup lid in the present disclosure. FIG. 15 is a schematic diagram of another embodiment of the cup lid in the present disclosure. DETAILED DESCRIPTION OF EMBODIMENTS

[0022] The present disclosure provides a fluid supply cup and a cup lid therefor. To make the purposes, technical solutions, and effects of the present disclosure clearer and more specific, the present disclosure is further described in detail below. It should be understood that the embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0023] The present disclosure provides a cup lid for a fluid supply cup, as shown in FIG. 1, FIG. 2, FIG. 14, and FIG. 15, including a lid body 1. A top part of the lid body 1 is arranged with a tubular connecting portion 2, and the tubular connecting portion 2 is used to be connected to a connection part or adapter screw of a spray gun (the spray gun and the adapter screw can be found in relevant references, and are not described in detail here). The lid body 1 includes a side wall 4 extending from a side edge 3 towards the tubular connecting portion 2. The side edge 3, the side wall 4, and the tubular connecting portion 2 form a complete cup lid. The cup lid is used to cover an upper part of the fluid supply cup, and paint inside the fluid supply cup enters a corresponding position of the spray gun through the tubular connecting portion 2 for subsequent operations. In particular, at least one twisting component or at least one twisting area 6 is arranged on an outer surface of the side wall 4, and an operator combines or separates the cup lid from the fluid supply cup through the twisting component or the twisting area 6. In practical use, two or more twisting components or twisting areas 6 are generally arranged to be compatible with the ergonomics of a palm, increasing the friction between the operator's fingers or palm and an outer surface of the lid body 1, thereby driving a rotation of the cup lid. The cup lid and the fluid supply cup are connected together by rotation or twisting, and their connection method can be a spiral wedge and a spiral groove, an internal thread and an external thread, or multiple internal-thread segments and multiple external-thread segments. Of course, other methods can also be used, which are not repeated here.

[0024] In another embodiment of the present disclosure, as shown in FIG. 2 to FIG. 13, the twisting component is a protrusion 8 on the side wall, and the protrusion 8 is fin shaped. The protrusion 8 extends along the outer surface of the side wall 4, and an extension length of the protrusion 8 can be determined as needed. As shown in FIG. 13, an extension direction of the protrusion 8 can extend along a circumferential direction of the side wall 4, and the operator can use the fingers to grip a top end of the fin in the circumferential direction for rotation. The extension direction of the protrusion 8 can also extend from the side edge 3 towards the tubular connecting portion 2, and can be set according to user habits. When adopting the arrangement of the fin shape, as shown in FIG. 2, FIG. 3, FIG. 4, and FIG. 5, when the user applies a pressure to the fin part, the cup lid and the fluid supply cup are gradually fastened. When the cup lid is completely fastened to the fluid supply cup, the pressure is continuously applied to the fin part, which causes slight deformation of the fin part. This feedback provides the operator with a tactile mechanical information that the cup lid has been locked. Without further observation, the operator can determine that the cup lid is firmly connected to the fluid supply cup and proceed to subsequent operations more quickly.

[0025] As shown in FIG. 3, FIG. 4, and FIG. 5, a vertical upright portion 9 of the fin-shaped protrusion 8 is adapted to a human finger or palm, and a shape of the vertical upright portion 9 can be set according to the user's operating habits. Adopting the arrangement of the vertical upright portion 9 can further improve the tactile experience of the operator during operation. The deformation of the vertical upright portion 9 can be set according to the operator's operating habits to enhance the operator's use experience.

[0026] Of course, according to the operator's operating habits, as shown in FIG. 3 to FIG. 13, two or an even number of the twisting components are uniformly arranged on the outer surface of the side wall 4. Alternatively, three or an odd number of the twisting components are uniformly arranged on the outer surface of the side wall 4. Generally speaking, arranging two, three, or four twisting components on the lid body 1 can meet the user's needs. When only one twisting component is arranged, during the operator's operations, it is easy to cause uneven force distribution on the cup lid. In an arrangement, generally at least two twisting components are provided, i.e. the fin-shaped protrusions 8.

[0027] In a more alternative embodiment, as shown in FIG. 2, FIG. 3, and FIG. 4, two fin-shaped protrusions 8 are uniformly arranged on the outer surface of the side wall 4. The fins extend from the side edge 3 of the lid body 1 towards the tubular connecting portion 2, which coincide perfectly with the touch of the operator's fingers. Moreover, a front end of the fin-shaped protrusion 8 extends to a root part of the tubular connecting portion 2 in the form of a reinforcing rib 10, and the two fin-shaped protrusions 8 are located in one identical vertical plane. That is to say, the two fin-shaped protrusions 8 are arranged at a 180° angle on the outer surface of the lid body 1, which means they are uniformly arranged. If there are three fin-shaped protrusions 8, they are arranged at a 120° angle on the outer surface of the lid body 1, and so on. Since after the cup lid is fastened to the fluid supply cup, it needs to assemble the cup lid to the spray gun or the adapter screw, and the spray gun needs to be pressed down when the cup lid is connected to the spray gun, the extension of the reinforcement rib 10 can greatly improve the strength of the lid body 1, especially improve the support for the root part of the tubular connecting portion 2, preventing the deformation of the lid body 1 during assembly and avoiding the paint from overflowing from the tubular connecting portion 2.

[0028] In another embodiment of the present disclosure, as shown in FIG. 7 to FIG. 12, the side wall of the lid body 1 protrudes upward at a certain distance from the side edge 3, and the protruding part 11 extends towards the tubular connecting portion 2. The side wall 4 forms a shoulder portion 12 on the protruding part 11, and the fin-shaped protrusion 8 extends at least from the side edge 3 to a vertical surface of the shoulder portion 12. The role of the fin-shaped protrusion 8 is the same as described above. The fin-shaped protrusion 8 also has the function of supporting the protruding part 11, improving the overall strength of the cup lid, which is not repeated here. Obviously, the fin-shaped protrusion 8 can also extend to the root part of the tubular connecting portion 2 in the above-mentioned forms. Of course, the corresponding fin-shaped protrusions 8 can also be arranged around the vertical surface of the shoulder portion 12 to achieve the above function.

[0029] Furthermore, as shown in FIG. 2 to FIG. 13, a shape of the fin may be raindrop shaped, streamline shaped, bending shaped, H shaped, wing shaped, fin shaped, or frame shaped, but not limited to these shapes. An appropriate shape can be selected according to the operator's operating habits. For example, in the frame-shaped fin, a concave portion is formed in the middle of the frame-shaped fin, and the operator can insert the fingers into the concave portion for operation, or use the fingers or palm to grip an outside or inside of the fin for operation. Of course, the bending-shaped and H-shaped fins can also be operated like the frame-shaped fin.

[0030] Obviously, the twisting component can also adopt other structural forms, as shown in FIG. 6, 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 gripping portion. The operator can push the gripping portion to move or use the fingers to grip an inner wall of the gripping portion to operate the cup lid. Of course, a shape of the recess 13 can also be designed according to the operator's habits, such as trapezoidal, square, circular, etc., which are not repeated here.

[0031] Obviously, the method of using the twisting area 6 instead of the twisting component can also be adopted, which mainly achieves the operation of the cup lid by increasing a friction force. However, its operation effect is slightly inferior to the operation effect of using the twisting component such as the fin. As shown in FIG. 14 and FIG. 15, the twisting area 6 may be formed by a frosted surface, multiple wavy patterns, multiple convex points, or multiple concave points. Of course, other shapes can also be used to achieve this, which are not described in detail here.

[0032] Furthermore, as shown in FIG. 5, the tubular connecting portion 2 is uniformly arranged with connecting protrusions 17, and upright blocks 18 are respectively vertically arranged at two ends of the connecting protrusion 17. Upper ends of the upright blocks 18 are located on one identical circumference to improve the connection efficiency between the lid body 1 and the spray gun or the adapter screw. Of course, other shapes such as T-shaped or spiral wedge-shaped connecting pieces can also be used to form the connecting protrusion 17, as shown in FIG. 3, FIG. 7, and FIG. 8.

[0033] The present disclosure further provides a fluid supply cup having the cup lid, as shown in FIG 1. The fluid supply cup includes a rigid outer cup 19 and the cup lid. A plurality of spiral wedge-shaped elements 20 are uniformly arranged on the side edge of the lid body 1. An upper edge of an inner wall of the rigid outer cup 19 is uniformly arranged with a plurality of spiral wedge-shaped grooves. The spiral wedge-shaped element 20 is adapted to the spiral wedge-shaped groove, where both are in a one-to-one correspondence.

[0034] By applying force through the twisting component or the twisting area 6, the spiral wedge-shaped element 20 is screwed into the spiral wedge-shaped groove, and the cup lid is connected to the rigid outer cup 19.

[0035] Of course, the above description is not a limitation of the present disclosure, and the present disclosure is not limited to the above examples. Any changes, modifications, additions, or substitutions made by those skilled in the art within the substantive scope of the present disclosure should fall within the protection scope of the present disclosure

Claims

1. A cup lid for a fluid supply cup, comprising a lid body, wherein a top part of the lid body is arranged with a tubular connecting portion, the tubular connecting portion is configured to be connected to a connection part of a spray gun or an adapter screw of the spray gun, the lid body comprises a side wall extending from a side edge towards the tubular connecting portion, at least one twisting component or at least one twisting area is arranged on an outer surface of the side wall, and the cup lid is combined or separated from the fluid supply cup through the twisting component or the twisting area.

2. The cup lid according to claim 1, wherein the twisting component is a protrusion on the side wall, the protrusion is fin shaped and extends along the outer surface of the side wall.

3. The cup lid according to claim 2, wherein a vertical upright portion of the fin-shaped protrusion is adapted to a finger or palm of a human body.

4. The cup lid according to claim 1, wherein two or an even number of the twisting components are uniformly arranged on the outer surface of the side wall; or three or an odd number of the twisting components are uniformly arranged on the outer surface of the side wall.

5. The cup lid according to claim 2, wherein two fins are uniformly arranged on the outer surface of the side wall, and the fins extend from the side edge of the lid body towards the tubular connecting portion.

6. The cup lid according to claim 5, wherein a front end of the fin extends to a root part of the tubular connecting portion in a form of a reinforcing rib.

7. The cup lid according to claim 2, wherein the side wall of the lid body protrudes upward at a certain distance from the side edge, a protruding part extends towards the tubular connecting portion, the side wall forms a shoulder portion on the protruding part, and the fin-shaped protrusion extends at least from the side edge to the shoulder portion.

8. The cup lid according to claim 2, wherein the fin is raindrop shaped, streamline shaped, bending shaped, H shaped, wing shaped, fin shaped, or frame shaped.

9. The cup lid according to claim 1, wherein the twisting component is a recess on the side wall, and the recess extends along the outer surface of the side wall.

10. The cup lid according to claim 1, wherein the twisting area is formed by a frosted surface, a plurality of wavy patterns, a plurality of convex points, or a plurality of concave points.

11. The cup lid according to claim 1, wherein the tubular connecting portion is uniformly arranged with connecting protrusions, upright blocks are respectively vertically arranged at two ends of the connecting protrusion, and upper ends of the upright blocks are located on one identical circumference.

12. The fluid supply cup having the cup lid according to any one of claims 1 to 11, comprising a rigid outer cup and the cup lid, wherein a plurality of spiral wedge-shaped elements are uniformly arranged on the side edge of the lid body, a plurality of spiral wedge-shaped grooves are uniformly arranged on an upper edge of an inner wall of the rigid outer cup, the spiral wedge-shaped element and the spiral wedge-shaped groove are adapted and in a one-to-one correspondence; by applying force through the twisting component or the twisting area, the spiral wedge-shaped element is screwed into the spiral wedge-shaped groove, and the cup lid is connected to the rigid outer cup

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