A new connector for fluid supply cups

Abstract

The present invention discloses a new type of connector for a fluid supply cup, which includes a first connecting portion for connecting to a spray gun, a second connecting portion for connecting to a gravity cup is arranged above the first connecting portion, a first mechanical feature adapted to the spray gun is arranged on the first connecting portion, a second mechanical feature adapted to the gravity cup is arranged on the second connecting portion, and at least one through-hole is arranged on the second connecting portion, and the through-hole is used to screw the new type of connector through a corresponding tool. Since a channel for fluids such as paint to pass through is arranged on the axis of the connecting component, the through-hole and a part of the channel form a groove that can accommodate a wrench handle for example for an automobile, one end of the wrench handle or an iron sheet can be inserted into the groove, and then the other end of the wrench handle or the iron sheet can be turned to screw the connector, and the tightening or removal of the connector is achieved by controlling the screwing direction, which is convenient for user operation, enables users to quickly replace the connector, and improves replacement efficiency.

Description

Technical Field

[0001] The invention relates to the field of connection between a paint spray gun and a fluid supply cup such as a gravity cup, and in particular to a new type connector for the fluid supply cup. Background Art

[0002] Spray guns are widely used in auto body shops for repainting vehicles that have been repaired after an accident. In known spray guns, a liquid is contained in a reservoir attached to the spray gun, from which the liquid is fed to a nozzle. On emerging from the nozzle, the liquid is atomized and forms a spray with compressed air supplied to the nozzle. The liquid may be gravity fed or suction fed, or more specifically pressure fed, from a compressed air line to the spray gun, or from an air bleed line from the spray gun itself to the reservoir.

[0003] In order to facilitate the quick connection of the fluid supply cup such as the gravity cup with the spray gun, connecting screws, adapter screws and other connectors are set between the spray gun and the fluid supply cup such as the gravity cup. In the prior art, the adapter screws and other connectors need to be screwed to the corresponding position of the spray gun by a wrench. However, due to the different spray paint models, various types of adapter screws are produced. The outer diameters of various types of adapter screws are quite different. Users need to prepare wrenches or movable wrenches of various calibers. If the wrench caliber does not correspond, the adapter screw cannot be operated. Users need to prepare wrenches in time, which easily leads to low work efficiency. Especially when the adapter screw is not sealed tightly, if the adapter screw cannot be quickly replaced, the painting work cannot be carried out.

[0004] Therefore, the prior art needs to be further improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a new connector for a fluid supply cup, so that a user can quickly replace the connector and improve replacement efficiency.

[0006] In order to solve the above technical problems, the solution of the present invention includes:

[0007] A new connector for a fluid supply cup includes a first connector for connecting to a spray gun, a second connector for connecting to a gravity cup is arranged above the first connector, the first connector is provided with a first mechanical feature compatible with the spray gun, and the second connector is provided with a second mechanical feature compatible with the gravity cup, wherein the second connector is provided with at least one through-hole, and the through-hole is used to screw the new connector through a corresponding tool.

[0008] In the novel connector, the access end of the second connection part is circular, and two through-holes are arranged on the circumference of the access end, and the two through-holes are located on the same straight line; the two through-holes form a through groove.

[0009] In the novel connector, the straight line where the two through openings are located coincides with the diameter of the circle.

[0010] In the novel connector, the locking portion of the second mechanical feature is arranged on the second connecting portion symmetrically with respect to the linear axis.

[0011] In the novel connector, the first mechanical feature is a thread.

[0012] The novel connector described herein, wherein the first mechanical feature is a spiral wedge element.

[0013] In the novel connector, the second mechanical feature is a groove extending along the inner wall of the second connecting portion.

[0014] In the novel connector, the second mechanical feature is an undercut arranged along the second connecting portion and formed by the capture area.

[0015] In the novel connector, the width of the through opening is greater than the thickness of the corresponding tool.

[0016] In the novel connector, the portion of the side wall of the through opening located at the periphery of the access end also serves as a supporting point for the corresponding tool.

[0017] The present invention provides a new type of connector for a fluid supply cup, in which at least one through-hole is arranged on a wall at a locking position for connecting a fluid supply cup such as a gravity cup. Since a channel for fluid such as paint to pass through is arranged on the axis of the connecting component, the through-hole and a part of the channel form a groove that can accommodate, for example, a car wrench handle. One end of the wrench handle or an iron sheet can be inserted into the groove, and then the other end of the wrench handle or the iron sheet is turned to screw the connector. The tightening or removal of the connector is achieved by controlling the screwing direction. During this operation, there is no need to pay attention to the model of the connector, there is no need to distinguish the caliber of the car wrench, and even only one iron sheet is needed to achieve the tightening or removal of the connector, which facilitates user operation and enables the user to quickly replace the connector, thereby improving replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a novel connector in the present invention;

[0019] Figure 2 It is another structural schematic diagram of the novel connector in the present invention;

[0020] Figure 3 A schematic diagram of a novel connector with corresponding tools in the present invention;

[0021] Figure 4It is a schematic diagram of the structure of the novel connector and the fluid supply cup in the present invention. DETAILED DESCRIPTION

[0022] The present invention provides a new connector for a fluid supply cup. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The present invention provides a new connector for a fluid supply cup, such as Figure 1 As shown, it includes a first connection part 1 for connecting to a spray gun, and a second connection part 3 for connecting to a gravity cup 2 is arranged above the first connection part 1. The first connection part 1 and the second connection part 3 are generally made of tubular parts and are processed accordingly by injection molding or milling machines. The first connection part 1 is provided with a first mechanical feature 4 adapted to the spray gun, and the second connection part 3 is provided with a second mechanical feature 5 adapted to the gravity cup. It is particularly important that at least one through-hole 6 is provided on the second connection part 3, and the through-hole 6 is used to screw the new type connector through a corresponding tool. Specifically, the second connection part 3 is circular, and a through-hole 6 is opened on the circumference. The through-hole 6 is arranged in a U-shape on the circumference of the second connection part 3. The through-hole 6 and the cavity inside the second connection part 3 form a groove. At this time, a sheet-like automobile wrench or iron sheet can be inserted into the groove to complete the screwing operation of the connector. During this operation, since there is only one through opening 6, the front end of the automobile wrench or iron sheet is stuck on the inner wall of the second connecting portion 3, causing wear of the inner wall and easily causing sealing problems of the connecting piece.

[0024] Therefore, in another preferred embodiment of the present invention, the access end of the second connecting part 3 is circular, and two through-holes 6 are arranged on the circumference of the access end, and the two through-holes 6 are located on the same straight line; the two through-holes 6 form a through groove, that is, when the automobile wrench or iron sheet is inserted into the through groove, its front end will not be stuck to the inner wall of the second connecting part 3, thereby reducing the wear of the connecting piece during operation, and by using the openings of the two through-holes as supporting points, the purpose of the lever is achieved, so that the operator can screw the connecting piece more conveniently.

[0025] In the above embodiment, when the through slot is set too biased, the second mechanical feature 5 on the second connection part 3 will be set irregularly, thereby affecting the firmness of the connection and the sealing of the gravity cup. In the best embodiment of the present invention, the straight line where the two through holes 6 are located coincides with the diameter of the circumference, that is, the through slot formed by the two through holes 6 is located on the central axis of the second connection part 3, so that the second mechanical feature 5 is arranged on the second connection part 3 in a symmetrical manner, so that the gravity cup and the connection part are more closely combined, and the sealing performance of the connection is improved. Specifically, the locking part of the second mechanical feature 5 is arranged on the second connection part 3 symmetrically relative to the straight line. Of course, the first mechanical feature 4 is a thread, and other methods can also be used. For example, the first mechanical feature 4 is a spiral wedge element, and the connection method disclosed in the Chinese patent with patent number 028029496, which is named a paint spray gun and a connecting piece therefor and a paint container including the connecting piece, can also be used. The connection method disclosed in the Chinese patent with patent number 2017800069032, which is named a button lock fluid connector for a handheld spray gun. The specific connection method between it and the paint spray gun needs to be determined according to the matching relationship, and it can adopt the corresponding form known in the art, which will not be repeated here.

[0026] The second mechanical feature 5 can also be in the form of a thread, such as Figure 2 As shown, the groove 7 extending along the inner wall of the second connecting portion 3 adopted by the present invention can adopt the connection method disclosed in the Chinese patent with patent number 202120757691.5 and the name of reservoir cover, spray gun reservoir connection mechanism and reservoir. The above-mentioned second mechanical feature 5 can also be an undercut arranged along the second connecting portion 3 and formed by the capture area, or the connection method disclosed in the Chinese patent with patent number 201780076887.4 and the name of spray gun and nozzle assembly attachment can be adopted. The second mechanical feature 5 adopts the corresponding form known in the prior art and will not be repeated here.

[0027] In another preferred embodiment of the present invention, Figure 3 As shown, the width of the through-port 6 is greater than the thickness of the corresponding tool 8. The corresponding tool 8 generally refers to a wrench or iron sheet for automobiles. That is to say, the portion of the side wall of the through-port 6 located at the periphery of the access end also serves as a support point 9 of the corresponding tool 8. The corresponding tool 8 can use the corresponding side of the through-port 6 as a support point according to the rotation direction, thereby forming a lever force, increasing the torque, and making it easier to screw the connector, making it more convenient for customers to operate.

[0028] 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 protection scope of the present invention.

Claims

1. A novel connector for a fluid supply cup, comprising a first connector for connecting to a spray gun, a second connector for connecting to a gravity cup being arranged above the first connector, a first mechanical feature adapted to the spray gun being arranged on the first connector, and a second mechanical feature adapted to the gravity cup being arranged on the second connector, characterized in that: At least one through-hole is provided on the above-mentioned second connecting part, and the through-hole is used to screw the new type connecting piece through a corresponding tool. The access end of the above-mentioned second connecting part is circular, and two through-holes are provided on the circumference of the access end, and the two through-holes are located on the same straight line; the two through-holes form a through groove; insert one end of the corresponding tool into the groove, and then move the other end of the corresponding tool to screw the new type connecting piece, and the part of the side wall of the through-hole located on the outer periphery of the access end also serves as the supporting point of the corresponding tool. The corresponding tool forms a lever force with the supporting point according to the rotation direction, and increases the torque to screw the new type connecting piece.

2. The novel connector according to claim 1, characterized in that: The straight line where the two through openings are located coincides with the diameter of the circle.

3. The novel connector according to claim 2, characterized in that: The locking portion of the second mechanical feature is arranged on the second connecting portion symmetrically with respect to the linear axis.

4. The novel connector according to claim 1, characterized in that: The first mechanical feature is a thread.

5. The novel connector according to claim 1, characterized in that: The first mechanical feature mentioned above is a spiral wedge element.

6. The novel connector according to claim 1, characterized in that: The second mechanical feature is a groove extending along the inner wall of the second connecting portion.

7. The novel connector according to claim 1, characterized in that: The second mechanical feature is an undercut arranged along the second connection portion and formed by the capture area.

8. The novel connector according to claim 1, characterized in that: The width of the through opening is greater than the thickness of the corresponding tool.

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