Lid, connection assembly for a paint can and paint can

Abstract

The application provides a can lid, a connecting assembly and a paint spraying can, which comprises a nozzle configured to be capable of connecting an external connector, a connecting part configured to be capable of connecting a can body of the paint spraying can, and a can lid body extending outward from the nozzle and connected between the nozzle and the connecting part, wherein a positioning part is arranged on the can lid body, the positioning part is located at a side of the nozzle and forms a positioning cavity between the nozzle and the positioning part, and the positioning cavity can accommodate the connector and position the connector during installation on the nozzle.

Description

Technical Field

[0001] This application belongs to the field of spray painting equipment technology, and in particular relates to a lid, connecting component and spray paint bottle for a spray paint bottle. Background Technology

[0002] A paint can is used to store paint and includes a can body and a can lid. The can lid has a spout. When in use, the spout of the paint can is connected to the spray gun via a connector, or a connector is provided on the spray gun. The paint in the paint can passes through the spout and the connector to reach the spray gun and is sprayed out from the spray gun.

[0003] There are generally two types of connectors in the existing technology; one is a spiral connector, whose corresponding spout also has a spiral opening, and the installation between the connector and the spout is achieved through a threaded connection; the other is a snap-fit ​​connector, such as... Figure 1 As shown, the snap-fit ​​connector 100 has a connecting body 101, a first extension 102 extending longitudinally from the connecting body 101, and a second extension 103 extending inwardly from the first extension 102, thereby forming a receiving portion 104 for snapping onto the spout and a rotating opening 105 in the rotation direction between the connecting body 101, the first extension 102, and the second extension 103. When connecting the connector and the spout, how to complete the connection more quickly and prevent paint overflow at the spout from contaminating the lid or the operator is a problem to be solved. Utility Model Content

[0004] In view of some shortcomings in the prior art, this application provides a lid, a connecting assembly, and a paint sprayer for a paint sprayer.

[0005] The first aspect of this application provides a lid for a paint spray bottle, comprising: The spout is configured to connect to an external connector. The connecting part is configured to connect to the body of the paint spray bottle; and, The main body of the lid extends outward from the spout and connects the spout and the connecting part; The lid body is provided with a positioning part; the positioning part is located on the side of the spout and forms a positioning cavity with the spout. The positioning cavity can accommodate the connector and position it for installation on the spout.

[0006] Furthermore, a snap-fit ​​element is provided on the outer wall of the spout, and the snap-fit ​​element is not located in the positioning cavity.

[0007] In one embodiment, the connector is a snap-fit ​​connector, including a connecting body, a first extension extending longitudinally from the connecting body, and a second extension extending inwardly from the first extension, thereby forming a rotating opening in the rotational direction and a receiving portion for snapping onto a spout between the connecting body, the first extension, and the second extension; in other words, the connector that mates with the spout is a snap-fit ​​connector, having a rotating opening in the rotational direction formed at one longitudinal end of the connector and a receiving portion for snapping onto a spout. The outer wall of the spout is provided with a snap-fit ​​element, which is configured to at least partially snap into the receiving portion of the connector from the rotating port of the connector to snap the connector onto the lid; wherein the snap-fit ​​element is not located in the positioning cavity.

[0008] In one embodiment, the positioning part has two oppositely arranged parts, each forming a positioning cavity with the spout; the positioning part is configured to: after the connector and spout are installed, be able to contact the outer surface of the connector or have the connector interference fit in the positioning cavity to provide support for the connector.

[0009] In one embodiment, the snap-fit ​​member has an annular protrusion on its upper surface, configured to allow for an interference fit with the inner wall of the connector to achieve a seal.

[0010] In one embodiment, the snap-fit ​​member extends along the rotation direction and includes a protruding structure and a stop structure; wherein the protruding structure can be snapped into the receiving portion of the connector through the rotation port; the stop structure is larger than the rotation port of the connector and cannot be snapped into the receiving portion to prevent the connector from rotating excessively.

[0011] In one embodiment, the outer surface of the protruding structure of the snap-fit ​​member is in contact with the inner surface of the receiving portion of the connector.

[0012] In one embodiment, the protruding structure and the receiving portion can form an interference fit.

[0013] In one embodiment, protrusions are provided on both sides of the stop structure to engage the connector from either side of the stop structure.

[0014] In one embodiment, the protruding structure is provided with at least one recessed flow channel that runs longitudinally through the protruding structure to allow paint to flow.

[0015] In one embodiment, the lower surface of the protrusion structure forms a guide surface that gradually slopes downward along the rotation direction to guide the sliding contact of the connector.

[0016] In one embodiment, the lid body is provided with a reinforced area with increased thickness; the spout is located in the reinforced area, and the positioning part and the positioning cavity are also located on the reinforced area.

[0017] In one embodiment, at least one rib is provided between the reinforcing area and the connecting portion, with one end of the rib adjacent to the positioning portion.

[0018] In one embodiment, the connecting portion is formed generally longitudinally from the lid body and has annular structures of different diameters, configured to be inserted into the body of the paint spray bottle to achieve a seal.

[0019] In one embodiment, the lid is made of plastic and is integrally molded.

[0020] The second aspect of this application provides a spray paint can having a can body and a can lid as described in any of the preceding embodiments, wherein the connecting part of the can lid can be inserted into the can body to achieve a fit.

[0021] A third aspect of this application provides a connection assembly for a paint spray bottle, including a connector and a bottle cap as described in any of the preceding embodiments.

[0022] The kettle lid, spray bottle, or connecting assembly provided in at least one embodiment of this application utilizes a snap-fit ​​component on the outer wall of the spout and a positioning part on the main body of the kettle lid. Under the combined action of the snap-fit ​​component and the positioning part, the connector and the kettle lid can be quickly assembled. At the same time, the snap-fit ​​component and the positioning part also serve as stabilizing components. After the connector and the kettle lid are assembled, the snap-fit ​​component and the positioning part apply force to the connector from a cross direction. This solves the technical problem of the spout and connector not being firmly connected in the prior art, and achieves the technical effect of quick connection between the spout and the connector without leakage.

[0023] The lid, spray bottle, or connecting assembly provided in at least one embodiment of this application increases the strength of the lid body by setting ribs between the positioning part and the connecting part, preventing the lid body from deforming during the process of pressing down the connector to connect the spout. At the same time, the user can quickly determine the position of the positioning part by observing the position of the ribs from the top of the lid, which serves as an identifier for the positioning part and improves the ease of installation.

[0024] The lid, spray bottle, or connecting assembly provided in at least one embodiment of this application, by providing a seepage channel on the raised structure that allows paint to pass through, avoids paint from remaining or solidifying on the outer wall of the upper side of the raised structure when the lid is placed on the table with the spout facing upward, thereby eliminating the problems of difficult lid installation and debris falling into the spray gun.

[0025] The lid, paint bottle, or connecting assembly provided in at least one embodiment of this application, by forming a guide surface on the lower surface of the protruding structure, not only achieves the tightening after the connector is screwed in, but also provides tactile feedback of gradual tightening during the screwing in of the connector, so that when the user installs the lid onto the connector of the spray gun, the tactile feedback can ensure that the installation is in place and secure. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a snap-fit ​​connector; Figure 2 This is a front view of the lid of a teapot, representing one embodiment. Figure 3 It is a top-down 3D view of the teapot lid; Figure 4 This is a schematic diagram showing the assembly of the lid and the connector; In the diagram: 1. Lid, 11. Spout, 111. Snap-fit ​​part, 1111. Protruding structure, 1112. Stop structure, 1113. Groove, 112. Annular protrusion, 12. Lid body, 121. Positioning part, 122. Positioning cavity, 123. Rib, 124. Reinforcing area, 13. Connecting part; 100 Snap-fit ​​connector, 101 Connecting body, 102 First extension, 103 Second extension, 104 Receiving part, 105 Rotating port. Detailed Implementation

[0027] The technical solutions in the embodiments will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 application 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 application.

[0029] 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.

[0030] In the description of this application, it should be noted that, unless otherwise expressly 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] like Figure 2-4 As shown, the first embodiment of this application provides a lid 1 (hereinafter referred to as the lid) for a spray paint can. The lid 1 has a spout 11, a lid body 12, and a connecting portion 13, with the lid body 12 connected between the spout 11 and the connecting portion 13. Wherein: The spout 11 is a through channel, generally a hollow annular cylinder extending longitudinally Y along the lid 1, configured to connect to a connector to deliver paint from the paint can to the connector and further to the spray gun for spraying.

[0032] The outer wall of the spout 11 is provided with threads and / or snap-fit ​​parts 111 for connection with the connector.

[0033] In one embodiment, the connector is a snap-fit ​​connector 100, and a snap-fit ​​member 111 is provided on the outer wall of the spout 11; the snap-fit ​​member 111 can be snapped into the receiving portion 104 from the rotating opening 105 of the connector 100, thereby snapping the connector 100 onto the lid 1. Figure 4 The diagram shows the relationship between the connector 100 and the spout 11 before the snap-fit ​​is engaged.

[0034] For the snap-fit ​​connector 100, an annular protrusion 112 is generally provided on the upper longitudinal direction of the snap-fit ​​member 111, which can be regarded as a sealing ring fixed on the spout 11; the annular protrusion 112 is configured to be able to interfere with the interior of the connector 100 to form a seal and prevent paint leakage in the connector.

[0035] The snap-fit ​​member 111 extends along the rotational direction. Figure 3 and Figure 4 The direction is shown as clockwise. The snap-fit ​​connector 111 has a protruding structure 1111 and a stop structure 1112; wherein, the protruding structure 1111 can be snapped into the receiving portion 104 of the connector 100 through the rotation port 105; the stop structure 1112 is larger than the rotation port 105 of the connector 100 and cannot be snapped into the receiving portion 104, thereby preventing the connector 100 from rotating excessively.

[0036] In one embodiment, when the lid 1 is connected to the connector 100, the outer surface of the protruding structure 1111 of the snap-fit ​​member 111 is in contact with the inner surface of the receiving portion 104 of the connector 100. Furthermore, an interference fit is formed between the protruding structure 1111 and the receiving portion 104, and the protruding structure 1111 is better stabilized in the receiving portion 104 by compression. Furthermore, the lower surface of the protruding structure 1111 gradually slopes downwards along the rotation direction, thereby becoming increasingly tighter during the rotation of the connector 100, resulting in better connection stability.

[0037] Protruding structures 1111 can also be provided on both sides of the stop structure 1112, so that the connector 100 can be inserted from either the left or right side, realizing the bidirectional torsional connection between the connector 100 and the lid 1, and improving the flexibility of the paint can connection and installation.

[0038] refer to Figure 2 The raised structure 1111 may also be provided with at least one recessed flow channel 1113 extending longitudinally Y through the raised structure 1111 to allow paint to flow. For example, when changing paint, when the lid 1 is removed from the connector 100, the spout 11 is generally placed upwards, so the paint at the spout 11 will flow downwards. When there is no flow channel 1113, the paint will accumulate above the raised structure 1111 and solidify due to the obstruction of the raised structure 1111. When the lid 1 is reinstalled to the connector 100, the solidified paint will hinder the installation. By providing the flow channel 1113, this problem can be easily solved.

[0039] The lid body 12 extends outward from the spout 11 and is generally an inclined surface, with its top-view surface being circular.

[0040] A positioning portion 121 is provided on the lid body 12; the positioning portion 121 extends longitudinally Y from the lid body 12. The positioning portion 121 is located on the side of the spout 11, forming a positioning cavity 122 between it and the spout 11 that can accommodate at least the first extension 102 and the second extension 103 of the connector 100; wherein the snap-fit ​​member 111 is not located in the positioning cavity 122. With this arrangement, during the initial installation of the connector 100, as... Figure 4 As shown, the rotating port 105 and the receiving cavity 105 of the connector 100 can be directly positioned in the positioning cavity 122 without interfering with the snap-fit ​​component 111. By rotating, it directly snaps into the snap-fit ​​component 111 along the rotation direction, which greatly improves the snap-fit ​​speed and increases the working efficiency.

[0041] In a further embodiment, the positioning part 121 may be a block or a sheet, having two oppositely arranged parts, each forming a positioning cavity 122 with the spout 11. Furthermore, the positioning part 121 may be configured such that, after the connector 100 and the spout 11 are installed, it can contact the outer surface of the connector 100, or the connector 100 is interference-fitted in the positioning cavity 122, thereby providing support for the connector 100 in the longitudinal Y direction and improving the stability of the painting operation.

[0042] When the positioning part 121 contacts the connector 100, or when the connector 100 is interference-fitted in the positioning cavity 122, a certain force may be needed to press the connector 100 downwards. To increase the stability of the lid body 12 to withstand pressure, ribs 123 (as reinforcing ribs) can be provided on the lid body 12 for reinforcement. The ribs 123 extend from the positioning part 121 to the connector 13, that is, they extend approximately along the radial direction of the circular lid 1. Figure 3 The diagram shows a configuration with three ribs 123 on each side. More or fewer ribs can be used depending on actual needs. The ribs 123 allow the lid body 12 to meet pressure requirements even when it is very thin, thus saving material.

[0043] Furthermore, a reinforcing region 124 can be provided on the lid body 12. This reinforcing region 124 is preferably annular, and its area is less than 30% of the area of ​​the lid body 12, for example, 30%, 28%, 25%, 20%, etc. The thickness of the reinforcing region 124 is increased (generally, the thickness of the lid body 12 is 1-1.5 mm, for example 1.2 mm, 1.3 mm, 1.4 mm, etc., and the thickness of the reinforcing region 124 is approximately 2-2.5 mm, for example 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, etc.); the spout 11 is located in the reinforcing region 124, and the positioning part 121 and positioning cavity 122 are also located on the reinforcing region 124. The rib 123 extends from the outer edge of the reinforcing region 124 to the connecting part 13. The reinforcing region 124 is part of the lid body 12, but is thicker, providing sufficient strength for the spout 11 and the positioning part 121, and also providing support for the rotating connector 100.

[0044] The connecting part 13 is formed from the lid body 12 generally along the longitudinal direction Y. It has an annular structure with different diameters and is configured to be inserted into the body of the paint sprayer. It cooperates with the body of the sprayer to form a seal and prevent paint leakage.

[0045] The lid 1 can be integrally molded, for example by thermoplastic molding, which makes the lid lightweight, uses less material, has low cost, and is simple to manufacture.

[0046] A second embodiment of this application provides a paint spray bottle having a lid 1 as described in any of the preceding embodiments.

[0047] 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.

[0048] The above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application 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 application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A lid for a spray paint can, characterized in that, include: The spout is configured to connect to an external connector. The connecting part is configured to connect to the body of the paint spray bottle; as well as, The main body of the lid extends outward from the spout and connects the spout and the connecting part; The lid body is provided with a positioning part; the positioning part is located on the side of the spout and forms a positioning cavity with the spout. The positioning cavity can accommodate the connector and position it for installation on the spout. The outer wall of the spout is provided with a snap-fit ​​component, which is not located in the positioning cavity.

2. The lid according to claim 1, characterized in that, The positioning part has two oppositely arranged parts, each forming a positioning cavity with the spout; the positioning part is configured such that after the connector and spout are installed, it can contact the outer surface of the connector or the connector is interference-fitted in the positioning cavity to provide support for the connector.

3. The lid according to claim 1, characterized in that, The snap-fit ​​component has an annular protrusion on its upper surface, which is configured to allow for an interference fit with the inner surface of the connector to achieve a seal.

4. The lid according to any one of claims 1-3, characterized in that, The connector connected to the spout is a snap-fit ​​connector, having a rotating opening formed at one longitudinal end of the connector along the rotation direction and a receiving portion for snapping the spout; the snap-fit ​​element extends along the rotation direction and includes a protruding structure and a stop structure; wherein, the protruding structure can be snapped into its receiving portion through the rotating opening of the connector; the stop structure is larger than the rotating opening of the connector and cannot be snapped into the receiving portion to prevent the connector from rotating excessively.

5. The lid according to claim 4, characterized in that, The outer surface of the protruding structure of the snap-fit ​​component fits against the inner surface of the receiving portion of the connector; an interference fit can be formed between the two. The lower surface of the protruding structure forms a guide surface that gradually slopes downward along the direction of rotation, used to guide the sliding contact of the connector.

6. The lid according to any one of claims 1-3 and 5, characterized in that, The lid body is provided with a reinforced area with increased thickness; the spout is located in the reinforced area, and the positioning part and positioning cavity are also located on the reinforced area.

7. The lid according to claim 6, characterized in that, At least one rib is provided between the reinforcing area and the connecting part, and one end of the rib is adjacent to the positioning part.

8. The lid according to claim 4, characterized in that, The raised structure is provided with at least one recessed flow channel that runs longitudinally through the raised structure to allow paint to flow.

9. A spray paint can, characterized in that, The pot has a pot body and a pot lid as described in any one of claims 1-8, wherein the connecting part of the pot lid can be inserted into the pot body to achieve a fit.

10. A connecting assembly for a paint spray bottle, comprising a bottle cap and a connector, characterized in that, The lid includes: The spout is configured to connect to the connector; The connecting part is configured to connect to the body of the paint spray bottle; and, The main body of the lid extends outward from the spout and connects the spout and the connecting part; The lid body is provided with a positioning part; the positioning part is located on the side of the spout and forms a positioning cavity with the spout. The positioning cavity can accommodate the connector and position it for installation on the spout. The connector connected to the spout is a snap-fit ​​connector, having a rotating opening formed at one longitudinal end of the connector in the direction of rotation and a receiving portion for snapping the spout. The outer wall of the spout is provided with a snap-fit ​​element, which is configured to at least partially snap into the receiving portion of the connector from the rotating port of the connector to snap the connector onto the lid; wherein the snap-fit ​​element is not located in the positioning cavity.

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