Liquid reservoir of spraying equipment

Abstract

A liquid reservoir of spraying equipment comprises a rigid outer cup, a lining, a cover body and a fastening assembly. The fastening assembly comprises a first fastening piece and a second fastening piece, and the first fastening piece is arranged on the rigid outer cup; the second fastener is arranged on the cover body; the second fastening piece is screwed into one side, far away from the opening of the rigid outer cup, of the first fastening piece, so that the first fastening piece limits the second fastening piece to move towards one side far away from the rigid outer cup; the first fastening piece is located on the outer side wall of the rigid outer cup, and the second fastening piece is located on the outer edge of the cover body. According to the liquid reservoir of the spraying equipment, the fastening assembly is located outside the rigid outer cup, the opening of the rigid outer cup is prevented from being expanded, and the stability of assembling and fixing the cover body on the rigid outer cup is kept.

Description

Technical Field

[0001] This utility model belongs to the technical field of spray painting equipment, and in particular relates to a liquid reservoir for spray painting equipment. Background Technology

[0002] A reservoir generally refers to a paint cup, which is used to store paint. When in use, it is connected to a spray gun to spray out the paint inside.

[0003] Patent No. 202122492058.0, entitled "A Liquid Supply Device for Spraying Equipment", discloses a liquid reservoir structure, including a cover, an inner liner and a rigid outer cup. The outer edge of the cover is provided with a spiral wedge element, and the inner wall of the rigid outer cup is provided with a spiral wedge groove. The cover is inserted into the rigid outer cup so that the spiral wedge element is screwed into the spiral wedge groove, thus connecting the cover and the rigid outer cup.

[0004] However, this reservoir structure requires a portion of the cap to be inserted into the rigid outer cup. The spiral wedge element on the cap screws into the spiral wedge groove inside the rigid outer cup, causing the spiral wedge element on the cap to easily enlarge the opening of the rigid outer cup, creating an assembly gap between the cap and the rigid outer cup, reducing the secure installation of the cap on the rigid outer cup. The flange of the liner is placed on the annular surface inside the rigid outer cup. When the liner is filled with paint and placed into the rigid outer cup, the flange of the liner easily comes into contact with the raised spiral wedge groove on the inner wall of the rigid outer cup above the annular surface, causing the liner to tilt and the paint to spill out. In addition, when the opening of the rigid outer cup is enlarged by the cap, the annular surface also extends outward, reducing the area of ​​the annular surface aligned with the flange of the liner. The annular surface cannot fully support the flange of the liner. Because the liner is relatively soft, the weight of the paint can cause the flange to deform, and the liner to fall deeper into the rigid outer cup, making it impossible for the cap to form an effective seal for the liner, resulting in paint leakage. Utility Model Content

[0005] In view of the shortcomings of the related technologies, this utility model provides a liquid reservoir for a spraying equipment, so as to solve the problem that the liquid supply device of the current spraying equipment is prone to expanding the opening of the rigid outer cup, which reduces the firmness of the installation of the cover and the inner liner.

[0006] This utility model provides a liquid reservoir for a spraying equipment, comprising:

[0007] A rigid outer cup with an opening;

[0008] The inner liner is installed inside the rigid outer cup;

[0009] A cover body is mounted on the rigid outer cup and has a connection port for conveying fluid; the cover body is used to close the opening of the rigid outer cup and fix the inner liner;

[0010] A fastening assembly is used to prevent the cover from detaching from the rigid outer cup; the fastening assembly includes:

[0011] The first fastener is installed on the rigid outer cup;

[0012] A second fastener is installed on the cover; the second fastener is screwed into the side of the first fastener away from the opening of the rigid outer cup, so that the first fastener restricts the movement of the second fastener away from the rigid outer cup;

[0013] The first fastener is located on the outer wall of the rigid outer cup, and the second fastener is located on the outer edge of the cover.

[0014] This technical solution places the fastening components outside the rigid outer cup, avoiding enlarging the opening of the rigid outer cup and maintaining the stability of the cover assembly and fixation on the rigid outer cup.

[0015] In some embodiments, the side surface of the first fastener away from the rigid outer cup is attached to the second fastener.

[0016] This technical solution enables the second fastener to provide radial support to the rigid outer cup through the first fastener, further ensuring that the opening of the rigid outer cup does not increase and maintaining stable support of the rigid outer cup for the inner liner.

[0017] In some embodiments, the second fastener has a fixing portion and a limiting portion;

[0018] The fixing part is connected to the cover body, and the limiting part is located on the outside of the rigid outer cup;

[0019] The fixing part and the limiting part are configured to form a limiting groove between them; the first fastener is screwed into the limiting groove.

[0020] This technical solution enables the second fastener to form a groove-like structure, achieving a limiting connection, while simultaneously providing radial support to the first fastener and preventing the rigid outer cup opening from expanding outward.

[0021] In some embodiments, the limiting portion is wedge-shaped to cause the width of the limiting groove to gradually decrease along the direction in which the first fastener is screwed in.

[0022] This technical solution ensures that the first fastener can be gradually pressed by the second fastener after being screwed into the limiting groove, thus guaranteeing the firmness of the assembly connection between the cover and the rigid outer cup.

[0023] In some embodiments, a raised ridge is provided on the side surface of the first fastener near the limiting portion and / or on the side surface of the limiting portion near the first fastener.

[0024] This technical solution further increases the tightness of the contact between the first fastener and the second fastener by using protruding ridges, so that the second fastener can more firmly press the first fastener, thereby further improving the firmness of the assembly connection between the cover and the rigid outer cup.

[0025] In some embodiments, the protrusion includes a first protrusion and a second protrusion; the first protrusion is disposed on the first fastener, and the second protrusion is disposed on the limiting portion; the second protrusion is attached to the first protrusion and is located on the side of the first protrusion closer to the rigid outer cup.

[0026] This technical solution enhances the radial limiting effect of the first fastener on the second fastener by setting the first convex ridge on the outside of the second convex ridge, so that the second fastener can be firmly attached to the first fastener in the radial direction, ensuring radial support for the rigid outer cup.

[0027] In some embodiments, the fixing part is provided with an observation window, which is connected to the limiting groove.

[0028] This technical solution allows observation of the position of the first fastener screwed into the second fastener through an observation window, thereby ensuring that the first fastener is screwed in properly and the cover is firmly fixed to the rigid outer cup.

[0029] In some embodiments, the liner has a flange that rests on the end face of the rigid outer cup, and the cover holds and secures the flange.

[0030] This technical solution utilizes the end face of the rigid outer cup to support the flange of the inner liner, ensuring that the inner liner does not come into contact with other structures during the process of being installed into the rigid outer cup, thus keeping the inner liner stable and preventing paint spillage from the inner liner.

[0031] In some embodiments, the liner is attached to the inner wall of the rigid outer cup.

[0032] This technical solution enables the second fastener to provide radial support to the rigid outer cup through its action on the inner liner, thereby compressing the inner liner and improving its stability inside the rigid outer cup.

[0033] In some embodiments, the cover has a mounting portion that extends into the rigid outer cup and clamps and secures the inner liner with the rigid outer cup.

[0034] This technical solution further enables the liner to be clamped radially, thereby further improving its installation stability.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the liquid reservoir of the spraying equipment of this utility model;

[0038] Figure 2 This is an exploded structural diagram of the liquid reservoir of the spraying equipment of this utility model;

[0039] Figure 3 This is a cross-sectional view of the liquid reservoir of the spraying equipment of this utility model;

[0040] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0041] Figure 5 This is a schematic diagram of the structure of the cover body in the liquid reservoir of the spraying equipment of this utility model;

[0042] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0043] Figure 7 This is a side view of the cover of the liquid reservoir in the spraying equipment of this utility model;

[0044] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0045] In the picture:

[0046] 1. Rigid outer cup; 101. Opening; 2. Liner; 201. Flange; 3. Cover; 301. Connection port; 302. Assembly part; 4. Fastening assembly; 401. First fastener; 402. Second fastener; 4021. Fixing part; 4022. Limiting part; 4023. Limiting groove; 4024. Observation window; 403. Raised ridge; 4031. First raised ridge; 4032. Second raised ridge. Detailed Implementation

[0047] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0048] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] like Figures 1 to 8 As shown, in one illustrative embodiment of the liquid reservoir of the spraying equipment of this utility model, the liquid reservoir of the spraying equipment includes a rigid outer cup 1, an inner liner 2, a cover 3, and a fastening assembly 4.

[0052] A rigid outer cup 1 has an opening 101 at its top, and an inner liner 2 is installed inside the rigid outer cup 1 through the opening 101. A cover 3 is installed on the rigid outer cup 1, and the top of the cover 3 has a connection port 301 for conveying fluid. The cover 3 closes the opening 101 of the rigid outer cup 1 and secures the inner liner 2. A fastening assembly 4 is installed between the cover 3 and the rigid outer cup 1 to prevent the cover 3 from detaching from the rigid outer cup 1.

[0053] The reservoir is connected to the connector of the spray gun. The connector 301 on the cover 3 is inserted into the connector, so that the internal space of the reservoir is connected to the spray gun. The paint contained in the liner 2 is transported to the spray gun through the connector on the cover 3, so that the spray gun can perform painting operation.

[0054] The fastening assembly 4 includes a first fastener 401 and a second fastener 402. The first fastener 401 is mounted on the rigid outer cup 1 and located on the outer side wall of the rigid outer cup 1. The second fastener 402 is mounted on the outer edge of the cover 3 and screwed into the side of the first fastener 401 away from the opening 101 of the rigid outer cup 1. This structural design places the second fastener 402 partially below the first fastener 401, and the first fastener 401 prevents the second fastener 402 from moving upward, thereby preventing the cover 3 from coming off the opening 101 of the rigid outer cup 1, thus maintaining the closure of the cover 3 to the opening 101 of the rigid outer cup 1, and the cover 3 securely fixing the inner liner 2.

[0055] Rotating the cover 3 causes the second fastener 402 to unscrew from under the first fastener 401, thereby eliminating the axial restriction of the first fastener 401 on the second fastener 402. This allows the cover 3 to be removed from the rigid outer cup 1, opening the opening 101 of the rigid outer cup 1, and removing or inserting the inner liner 2 to replace the paint.

[0056] Since the first fastener 401 is located on the outer wall of the rigid outer cup 1, the second fastener 402, located on the outer edge of the cover 3, must first extend outward and then downward to ensure that the lower part of the second fastener 402 is below the first fastener 401. This structural design allows the second fastener 402 to cover the first fastener 401 on the outside, while the first fastener 401 is also located on the outside of the rigid outer cup 1. This ensures that the entire fastening assembly 4 is outside the rigid outer cup 1, preventing the opening 101 of the rigid outer cup 1 from being stretched outward due to the fastening assembly 4 being inside the rigid outer cup 1. This ensures the stability of the shape of the rigid outer cup 1, making it tightly fitted with the cover 3 and preventing gaps between the cover 3 and the opening 101 of the rigid outer cup 1 from causing paint spillage.

[0057] The inner liner 2 has a flange 201. When an annular surface is provided inside the rigid outer cup 1, the flange 201 is placed on the annular surface. The cover body 3 extends into the rigid outer cup 1 and presses and fixes the flange 201 on the annular surface, thereby fixing the inner liner 2 to the cover body 3 and sealing the inner liner 2 to prevent paint from spilling. The paint is then delivered to the spray gun through the connection port 301 on the cover body 3. Because the outer side of the rigid outer cup 1 of the fastening component 4 keeps the shape of the rigid outer cup 1 stable, the flange 201 in the rigid outer cup 1 remains stable, maintaining full alignment between the annular surface and the flange 201. The rigid outer cup 1 stably supports the inner liner 2 through the annular surface, preventing the flange 201 from falling off and causing paint spillage.

[0058] In some embodiments, the surface of the first fastener 401 away from the rigid outer cup 1 is attached to the second fastener 402. This structural design allows the second fastener 402 to be tightly attached to the outside of the first fastener 401, increasing the friction between the first fastener 401 and the second fastener 402, and increasing the firmness of the cover 3 on the rigid outer cup 1. In addition, the second fastener 402 can provide radial support to the rigid outer cup 1 from the inside through the first fastener 401, further constraining the rigid outer cup 1 and preventing the opening 101 of the rigid outer cup 1 from expanding.

[0059] In some embodiments, the second fastener 402 has a fixing portion 4021 and a limiting portion 4022. The fixing portion 4021 and the limiting portion 4022 are located at opposite ends of the second fastener 402. The fixing portion 4021 is connected to the cover 3, and the limiting portion 4022 is located on the outside of the rigid outer cup 1. The fixing portion 4021 and the limiting portion 4022 are configured to cooperate, forming a limiting groove 4023 between them. When the first fastener 401 is screwed into the limiting groove 4023, the first fastener 401 can be limited and fixed by restricting the upward movement of the limiting portion 4022. This structural design achieves limiting and fixing by forming a groove structure in the second fastener 402 and inserting the first fastener 401. The structure is simple, easy to manufacture, and the fixing and disassembly operations are relatively easy.

[0060] Furthermore, in order to improve the tightness of the assembly, when the first fastener 401 is screwed into the limiting groove 4023, the first fastener 401 slides on the surface of the limiting part 4022 and makes close contact with it, so that there is a large friction between the first fastener 401 and the second fastener 402, ensuring that the first fastener 401 is firmly fixed in the second fastener 402, and the cover 3 is firmly limited and fixed on the rigid outer cup 1.

[0061] In some embodiments, such as Figure 6 As shown, the limiting part 4022 is wedge-shaped, causing the width of the limiting groove 4023 to gradually decrease along the direction in which the first fastener 401 is screwed in. This structural design causes the surface of the limiting part 4022 facing the limiting groove 4023 to be inclined. During the process of the first fastener 401 being screwed into the limiting groove 4023, the first fastener 401 slides on the surface of the limiting part 4022, while the limiting part 4022 gradually pushes the first fastener 401 towards the fixing part 4021, guiding the first fastener 401 to be screwed into the limiting groove 4023. This ensures that the limiting part 4022 firmly presses against the lower surface of the first fastener 401, guaranteeing that the first fastener 401 can be smoothly assembled into the limiting groove 4023, and that the first fastener 401 is firmly fixed after being installed in the limiting groove 4023.

[0062] In some embodiments, such as Figure 4 , Figure 6 and Figure 8 As shown, a protruding ridge 403 is provided on the side surface of the first fastener 401 near the limiting part 4022, or a protruding ridge 403 is provided on the side surface of the limiting part 4022 near the first fastener 401, or both are provided with a protruding ridge 403. The first fastener 401 is screwed into the limiting groove 4023. The side surface of the first fastener 401 near the limiting part 4022 is attached to the side surface of the limiting part 4022 near the first fastener 401, that is, the lower side surface of the first fastener 401 is attached to the upper side surface of the limiting part 4022. The protruding rib 403 makes at least one of the two surfaces that are in contact with each other have a raised structure. So when the two surfaces are in contact with each other, the limiting part 4022 pushes the first fastener 401 upward through the protruding rib 403, and / or the first fastener 401 pushes the limiting part 4022 downward through the protruding rib 403, increasing the pressure between the limiting part 4022 and the first fastener 401, thereby increasing the friction between the two, increasing the external force required to remove the first fastener 401 from the limiting groove 4023, and improving the firmness of the first fastener 401 in the second fastener 402.

[0063] In some embodiments, the protruding rib 403 includes a first protruding rib 4031 and a second protruding rib 4032. The first protruding rib 4031 is disposed on the first fastener 401, and the second protruding rib 4032 is disposed on the limiting portion 4022. The second protruding rib 4032 is attached to the first protruding rib 4031 and is located on the side of the first protruding rib 4031 closer to the rigid outer cup 1. This structural design allows the first protruding rib 4031 to prevent the second protruding rib 4032 from moving away from the rigid outer cup 1, and the first fastener 401 to radially limit the second fastener 402. At the same time, the mutual contact between the first protruding rib 4031 and the second protruding rib 4032 further increases the friction between the first fastener 401 and the second fastener 402, thereby further improving the stability when the second fastener 402 is connected to the first fastener 401.

[0064] In some embodiments, the fixing part 4021 is provided with an observation window 4024, which is connected to the limiting groove 4023. This structural design allows the user to see the first fastener 401 screwed into the limiting groove 4023 through the observation window 4024, and to know the position of the first fastener 401 screwed into the limiting groove 4023. This allows for manual intervention to ensure that the first fastener 401 is fully screwed into the limiting groove 4023, ensuring a secure connection between the first fastener 401 and the second fastener 402. To ensure that the observation window 4024 fully covers the travel of the first fastener 401 in the limiting groove 4023, the observation window 4024 is arc-shaped and positioned along the direction in which the first fastener 401 is screwed into the limiting groove 4023.

[0065] In some embodiments, the liner 2 has a flange 201 that rests on the end face of the rigid outer cup 1, and the cover 3 presses and fixes the flange 201. This structural design allows the liner 2 to be inserted into the rigid outer cup 1, and during the process of the flange 201 on the liner 2 falling onto the end face of the rigid outer cup 1, the flange 201 of the liner 2 will not contact any external structure, thus maintaining stability and preventing the liner 2 from tilting and spilling paint due to contact with external structures. In addition, this structural design allows the cover 3 to directly press the flange 201 of the liner 2 onto the end face of the rigid outer cup 1 to fix the liner 2. Compared to providing an annular surface in the rigid outer cup 1, the cover 3 does not need to partially extend into the rigid outer cup 1 to press and fix the flange 201, avoiding the opening 101 of the rigid outer cup 1 being stretched outward due to the cover 3 extending into the rigid outer cup 1.

[0066] In some embodiments, the liner 2 is attached to the inner wall of the rigid outer cup 1. This structural design allows the second fastener 402 to provide radial support to the rigid outer cup 1 through the first fastener 401, ensuring close contact between the rigid outer cup 1 and the liner 2 and increasing the firmness of the liner 2's assembly inside the rigid outer cup 1.

[0067] In some embodiments, the cover 3 has an assembly portion 302 that extends into the rigid outer cup 1 and clamps and fixes the inner liner 2 with the rigid outer cup 1. This structural design not only increases the tightness of the cover 3 after assembly with the rigid outer cup 1, but also further increases the assembly stability of the inner liner 2.

[0068] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A liquid reservoir for a spraying device, characterized in that, include: A rigid outer cup with an opening; The inner liner is installed inside the rigid outer cup; A cover body is mounted on the rigid outer cup and has a connection port for conveying fluid; the cover body is used to close the opening of the rigid outer cup and fix the inner liner; Fastening components are used to prevent the cover from detaching from the rigid outer cup; The fastening assembly includes: The first fastener is installed on the rigid outer cup; A second fastener is installed on the cover; the second fastener is screwed into the side of the first fastener away from the opening of the rigid outer cup, so that the first fastener restricts the movement of the second fastener away from the rigid outer cup; The first fastener is located on the outer wall of the rigid outer cup, and the second fastener is located on the outer edge of the cover.

2. The liquid reservoir of the spraying equipment according to claim 1, characterized in that, The surface of the first fastener away from the rigid outer cup is attached to the second fastener.

3. The liquid reservoir of the spraying equipment according to claim 1, characterized in that, The second fastener has a fixing part and a limiting part; The fixing part is connected to the cover body, and the limiting part is located on the outside of the rigid outer cup; The fixing part and the limiting part are configured to form a limiting groove between them; the first fastener is screwed into the limiting groove.

4. The liquid reservoir of the spraying equipment according to claim 3, characterized in that, The limiting part is wedge-shaped, so that the width of the limiting groove gradually decreases along the direction in which the first fastener is screwed in.

5. The liquid reservoir of the spraying equipment according to claim 3, characterized in that, The first fastener has a raised ridge on the side surface near the limiting part and / or on the side surface of the limiting part near the first fastener.

6. The liquid reservoir of the spraying equipment according to claim 5, characterized in that, The protruding rib includes a first protruding rib and a second protruding rib; the first protruding rib is disposed on the first fastener, and the second protruding rib is disposed on the limiting portion; the second protruding rib is attached to the first protruding rib and is located on the side of the first protruding rib closer to the rigid outer cup.

7. The liquid reservoir of the spraying equipment according to claim 3, characterized in that, An observation window is provided on the fixing part, and the observation window is connected to the limiting groove.

8. The liquid reservoir of the spraying equipment according to claim 1, characterized in that, The inner liner has a flange that rests on the end face of the rigid outer cup, and the cover holds and fixes the flange.

9. The liquid reservoir of the spraying equipment according to claim 2, characterized in that, The liner is attached to the inner wall of the rigid outer cup.

10. The liquid reservoir of the spraying equipment according to claim 9, characterized in that, The cover has an assembly part that extends into the rigid outer cup and clamps and fixes the inner liner with the rigid outer cup.

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