WO2023040439A1

WO2023040439A1 - Adapter mechanism for connecting spray gun and supply cup

Info

Publication number: WO2023040439A1
Application number: PCT/CN2022/105035
Authority: WO
Inventors: 肖云
Original assignee: 青岛汉柏塑料科技有限公司
Priority date: 2021-09-18
Filing date: 2022-07-12
Publication date: 2023-03-23
Also published as: CN215744212U

Abstract

An adapter mechanism for connecting a spray gun and a supply cup. The adapter mechanism comprises a sealing connector (6) and a base (7), which are used for forming a fluid flow channel between the supply cup and the spray gun, wherein at least two first locking portions (8) are provided on the base (7), and a second locking portion (9) is provided between two adjacent first locking portions (8); the base (7) is locked to a first connecting portion (1) on the spray gun by means of the first locking portions (8) and the second locking portion (9); a passage is provided in the middle of the base (7); and the sealing connector (6) is connected to the base (7) by means of the passage. In addition, the adapter mechanism is made of a metal material, and the adapter mechanism wraps a protruding portion of a spray gun pipe in a plastic spray gun nozzle assembly, so as to maximally protect a plastic nozzle portion of the spray gun in the case of misoperation; and the adapter mechanism can be flexibly selected according to the shape of the head of a cup cover of the spray cup, such that it is possible to use the same spray gun to achieve a connection between fluid supply cups having different types and the spray gun by means of replacing sealing connectors having different shapes.

Description

An adapter mechanism for connecting a spray gun to a supply cup

technical field

The utility model relates to the fluid supply of a paint spray gun, in particular to an adapter mechanism for connecting a spray gun and a supply cup.

Background technique

When the spray gun is used, the paint in the spray cup is sprayed out through the nozzle. At present, the head of the spray gun is made of plastic. Meet sealing requirements. At the same time, when the spray gun is in use, the operator needs to perform swing operations in various angles. When a mistake encounters a sharp or too hard object, the protruding spray gun head at the joint with the spray cup is easy to break, resulting in economic losses, especially This is more likely to happen in a small space. In addition, the head of the existing plastic spray gun can only be equipped with a cup cover of a certain shape, which cannot meet the needs of different shapes of cup covers, and the replacement of different shapes of cup covers will increase the cost of use. Therefore, a locking connection mechanism that can improve the service life of the spray gun and can be flexibly applied to liquid storage devices with different shapes of cup lids is of great significance.

Therefore, prior art awaits further improvement and development.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a transfer mechanism for connecting a spray gun and a supply cup.

In order to solve the above-mentioned technical problems, the utility model scheme includes:

A transfer mechanism for connecting a spray gun and a supply cup, which includes a sealed connection piece and a base forming a fluid communication channel between the supply cup and the spray gun, wherein at least two first locking parts are arranged on the base , a second locking part is set between two adjacent first locking parts, the base is locked with the first connecting part on the spray gun through the first locking part, the second locking part, and the middle part of the base is set There is a passage, and the sealing connection part is connected with the base through the passage.

In the transfer mechanism, the above-mentioned sealing connector includes a channel for fluid communication, a locking sealing part for connecting and locking the liquid outlet of the fluid supply cup, an insertion tube body for inserting the above-mentioned first connecting part, and A second connection for use with the base.

In the transfer mechanism described above, a positioning platform is arranged on the sealing connection between the above-mentioned insertion tube body and the second connection part.

In the transfer mechanism described above, an internal thread is provided on the inner wall of the passage, and an external thread is provided on the second connecting portion, and the internal thread and the external thread are matched.

In the transfer mechanism, the above-mentioned locking sealing part includes a sealing groove for inserting the liquid outlet of the fluid supply cup and a locking part for locking the fluid supply cup.

In the transfer mechanism, the above-mentioned first locking part includes a locking arm fixedly connected to the base and a lip on the locking arm that protrudes toward the axis of the base.

The above-mentioned transfer mechanism, wherein, the above-mentioned second locking part is a protrusion extending along the circumferential direction of the base, the lower surface of the protrusion is higher than the upper surface of the above-mentioned protruding lip, and the protruding block and the protruding lip form a locking opening .

In the transfer mechanism, the above-mentioned base is cylindrical, and the two first locking parts and the two second locking parts are arranged symmetrically about the center.

In the transfer mechanism described above, the end of the insertion tube body is provided with a tapered sealing surface, and the tapered sealing surface is adapted to the liquid inlet of the first connecting part.

In the transfer mechanism described above, the above-mentioned locking part is arranged at the inlet end of the sealing groove; it includes an annular wall and a pair of lateral locking protrusions formed on the inner wall of the annular wall.

The utility model provides an adapter mechanism for connecting the spray gun and the supply cup. One end of the adapter mechanism is connected to the plastic nozzle part of the spray gun, and the other end is connected to the fluid supply cup made of plastic material, which can greatly improve the service life of the spray gun; and the present invention The utility model is made of metal material, and the metal locking connection mechanism wraps the convex part of the spray gun tube in the nozzle assembly of the plastic spray gun, which can protect the plastic nozzle part of the spray gun as much as possible in the case of misoperation; the metal locking connection mechanism can be used according to The shape of the head of the spray cup and cover can be selected flexibly. The same spray gun can be used to realize the connection between different types of fluid supply cups and spray guns by replacing the sealing connectors of different shapes, thereby reducing the need for users to replace different fluid supply cups. The problem of increasing the cost of use caused by changing different spray guns.

Description of drawings

Fig. 1 is the structural representation of the first connection part in the utility model;

Fig. 2 is a schematic cross-sectional view of Fig. 1;

Fig. 3 is a schematic diagram of the locking of the transfer mechanism and the first connecting part in the utility model;

Fig. 4 is a schematic diagram of opening of the transfer mechanism and the first connecting part in the utility model;

Fig. 5 is the schematic diagram of the switching mechanism in the utility model;

Fig. 6 is the structural representation of base in the utility model;

Fig. 7 is the top view of the base in the utility model;

Fig. 8 is a structural schematic diagram of a sealing connector in the utility model;

Fig. 9 is a schematic cross-sectional view of the sealing connector in the present invention.

Detailed ways

The utility model provides an adapter mechanism for connecting the spray gun and the supply cup. In order to make the purpose, technical solution and effect of the utility model clearer and clearer, the utility model will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model provides a transfer mechanism for connecting the spray gun and the supply cup, as shown in Figure 1 and Figure 2, the patent number is 201780076887.4, and the invention name is the Chinese invention patent of spray gun and nozzle assembly attachment, but It can only be connected to the supply cup of one type of joint. The first connecting part 10 has a general structure: a pipe body 1 used as a spray gun fluid supply, and a water basin joint 2 is arranged on the top of the pipe body. The middle part of the water basin joint 2 is Corresponding to the water seal of the connector, the connection between the pipe body 1 and the basin joint 2 is a fluid inlet 4 . The water basin joint 2 is provided with two helical pieces 3 , and the front ends of the two helical pieces 3 are provided with a bayonet 5 .

And the utility model is just the switching mechanism designed according to the above-mentioned structure, and the most preferred switching mechanism in the utility model is made of metal. As shown in Figure 3, Figure 4, Figure 5 and Figure 6, it includes a sealing connection 6 and a base 7 forming a fluid communication channel between the supply cup and the spray gun, and in this embodiment the base 7 adopts a fixed nut way to achieve. The base 7 is provided with at least two first locking parts 8, and a second locking part 9 is provided between two adjacent first locking parts 8. The base 7 passes through the first locking parts 8, the second The locking part 9 is locked with the first connecting part 10 on the spray gun. As shown in FIGS.

Furthermore, the sealing connector 6 includes a channel 12 for fluid communication, a locking sealing part 13 for connecting and locking the liquid outlet of the fluid supply cup, an insertion tube body 14 for inserting the first connecting part 10 and The second connection part 15 used in conjunction with the base 7 . The fluid supply cups are connected through the locking sealing part 13, thereby realizing the penetration of the fluid communication channel, and the locking sealing part 13 can adopt various forms to match the joint form of the fluid supply cup. The insertion tube body 14 is inserted into the first connection part 10, the end of the insertion tube body 14 is sealed with the fluid inlet 4, and the second connection part 15 is connected with the passage 11 to realize the sealing connection between the connection part 6 and the base 7. Fixed connection.

Moreover, the above-mentioned sealing connector 6 between the insertion pipe body 14 and the second connecting portion 15 is provided with a positioning platform 16, which is adapted to the inner wall of the above-mentioned basin type joint 2, and passes through the outer surface of the positioning platform 16. Fitting with the inner wall of the water basin joint 2 makes the sealing connection part 6 more stable connected with the first connection part 10 . Moreover, the inner wall of the passage 11 is provided with an internal thread, and the second connecting portion 15 is provided with an external thread, and the internal thread is compatible with the external thread, that is, the sealing connector 6 and the base 7 are screwed.

And the locking sealing part 13 includes a sealing groove 17 for inserting the liquid outlet of the fluid supply cup and a locking part 18 for locking the fluid supply cup, and the locking part 18 is disposed in the sealing groove 17 . And above-mentioned locking portion 18 is arranged on the inlet end of seal groove 17, and locking portion 18 comprises annular wall and forms and the paired lateral locking protrusion on the inner wall of annular wall, and locking portion 18 can adopt various forms to match fluid supply cup The form of joints, such as bumps, etc., will not be repeated here.

As shown in FIGS. 6 and 7 , the above-mentioned first locking part 8 includes a locking arm 22 fixedly connected to the base 7 and a lip on the locking arm 22 protruding toward the axis of the base 7 . 19, can also be called a way of claw. Moreover, the second locking portion 9 is a protrusion 20 extending circumferentially along the base 7, the lower surface of the protrusion 20 is higher than the upper surface of the protrusion 19, and the protrusion 20 and the protrusion 19 form a locking opening, In the locked state, the lower surface of the protrusion 20 is clamped with the upper surface of the extension of the corresponding helical piece 3 , and at the same time, the side of the protrusion 20 is engaged with the tip of the bayonet socket 5 , which has the function of limiting. More preferably, the above-mentioned base 7 is cylindrical, and the two first locking parts 8 and the two second locking parts 9 are arranged symmetrically about the center.

Furthermore, as shown in FIG. 8 and FIG. 9 , the end of the above-mentioned insertion tube body 14 is provided with a tapered sealing surface 21 , and the tapered sealing surface 21 is adapted to the liquid inlet 4 of the above-mentioned first connecting portion 10 , through the tapered sealing surface 21 and the liquid inlet 4 to complete the sealing of the fluid flowing in the fluid communication channel.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the utility model.

Claims

A transfer mechanism for connecting a spray gun and a supply cup, which includes a sealed connection and a base forming a fluid communication channel between the supply cup and the spray gun, and is characterized in that at least two first locks are arranged on the base A tight part, a second locking part is arranged between two adjacent first locking parts, the base is locked with the first connecting part on the spray gun through the first locking part, the second locking part, and the base A passage is provided in the middle, and the sealing connecting piece is connected with the base through the passage.
The adapter mechanism according to claim 1, characterized in that, the above-mentioned sealing connector includes a channel for fluid communication, a locking sealing part for connecting and locking the liquid outlet of the fluid supply cup, and a locking sealing part for inserting into the first connection part of the insertion tube and the second connecting part used in conjunction with the base.
The transfer mechanism according to claim 2, characterized in that, a positioning platform is provided on the sealing connection between the insertion tube body and the second connection part.
The transfer mechanism according to claim 2, characterized in that, the inner wall of the passage is provided with an internal thread, and the second connecting part is provided with an external thread, and the internal thread is compatible with the external thread.
The transfer mechanism according to claim 2, wherein the locking sealing part comprises a sealing groove for inserting the liquid outlet of the fluid supply cup and a locking part for locking the fluid supply cup.
The transfer mechanism according to claim 2, wherein the first locking part comprises a locking arm fixedly connected to the base and a lip on the locking arm that protrudes toward the axis of the base .
The transfer mechanism according to claim 6, wherein the second locking part is a protrusion extending along the circumference of the base, the lower surface of the protrusion is higher than the upper surface of the protrusion lip, and the protrusion is in contact with the upper surface of the lip. Raised lip forms locking opening.
The transfer mechanism according to claim 2, wherein the base is cylindrical, and the two first locking parts and the two second locking parts are arranged symmetrically about the center.
The transfer mechanism according to claim 2, characterized in that, the end of the insertion tube body is provided with a tapered sealing surface, and the tapered sealing surface is adapted to the liquid inlet of the first connecting part.
The transfer mechanism according to claim 5, wherein the locking part is arranged at the inlet end of the sealing groove; comprises an annular wall and a pair of lateral locking protrusions formed on the inner wall of the annular wall; and seals the connecting piece Both base and base are made of metal.