Patent Application
20240157385
This application claims priority to Chinese Patent application No. 202223040480.3 filed on Nov. 15, 2022, the entire contents of which is herein incorporated by reference.
The present invention relates to the technical field of spraying tools, and specifically relates to a spray gun for convenient liquid filling.
The spray gun is a tool used for spraying liquids such as paint, coating and beauty lotion. It is mainly composed of a gun body, a material pot, a thimble, and a trigger. When the spray gun is in use, it is necessary to pour paint and other liquids for spraying into the pot. Due to the limited capacity of the pot, in the process of spraying the object, the pot needs to be unscrewed to add liquid every time the liquid is sprayed. The suction pipe is exposed during the liquid addition process, and the liquid dripping on the suction pipe not only pollutes the environment but also wastes materials.
In order to solve the above problem, there is also a solution to provide an additional liquid filling port on the pot lid of the material pot.
U.S. Patent Document No. 20180200742 discloses a spray gun comprising a gun body and a liquid container disposed below the gun body, a hollow connecting tube is disposed between the gun body and the liquid container. The liquid container is connected to the inside of the gun body through the hollow connecting tube; and the liquid container has an inlet hole at the top of the liquid container; and the head of the gun body is located above the top of the liquid container, and tilted downward away from the top of the liquid container. In the present invention, there is a large space above the liquid inlet hole, which provides an effective space for smooth liquid feeding operation, and the liquid can be added to the liquid container without changing the liquid container.
But, the above program, because the liquid filling port is always still located below the gun head, its operable space is still limited, and the liquid filling is still not convenient enough.
Of course, there is also from the top to the liquid container to add liquid program, U.S. Pat. No. 20190232307 patent document disclosed a sprayer, the hopper is set in the top of the spray gun, the sprayer's hopper and the spray gun is removable, the structure and application scenarios are relatively unique. In addition, because the hopper is set on the top of the spray gun, the hopper is heavy and has a high center of gravity after the liquid is added, when used, the user's hand can only hold the handle of the spray gun due to the need to operate the switch on the spray gun, so the stability of the spray gun is very poor when used, and the phenomenon of tipping over is very easy to occur.
The present invention provides a spray gun for convenient liquid filling, comprising a gun body, a material pot, a thimble assembly and a trigger assembly, the gun body having a connection seat integrally provided at the lower end thereof, the material pot being connected and fixed to the connection seat, the gun body being provided with a liquid filling channel, the lower end of the liquid filling channel being connected to the material pot, the liquid filling channel running upwardly through the gun body so as to make the upper end of the liquid filling channel connected to the outside world, and the gun body being provided with a sealing cover assembly at the upper end thereof for closing the liquid filling channel.
This solution, by setting up the liquid filling channel, the liquid can be added to the material pot from the top or side of the gun without unscrewing the material pot from the gun, so that the liquid on the suction tube will not drip to the ground to pollute the environment and cause waste, and the suction tube will not stick to the sundries; and at the same time, the cover body assembly is located on the top or side of the gun, and the space for the operation of the liquid when it is added is not affected at all by the other parts of the spray gun, so as to realize the purpose of convenient and fast liquid filling.
In order to explain the technical scheme of this application more clearly, the drawings needed in the implementation will be briefly introduced below. Obviously, the drawings described below are only some implementations of this application. For those skilled in the art, other drawings can be obtained according to these drawings without creative work.
In the drawings:
In describing the preferred embodiments, specific termi-nology will be resorted to for the sake of clarity. It is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose.
While various aspects and features of certain embodiments have been summarized above, the following detailed description illustrates a few exemplary embodiments in further detail to enable one skilled in the art to practice such embodiments. Reference will now be made in detail to embodiments of the inventive concept, examples of which are illustrated in the accompanying drawings. The accompanying drawings are not necessarily drawn to scale. The described examples are provided for illustrative purposes and are not intended to limit the scope of the invention. It should be understood, however, that persons having ordinary skill in the art may practice the inventive concept without these specific details.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first attachment could be termed a second attachment, and, similarly, a second attachment could be termed a first attachment, without departing from the scope of the inventive concept.
It will be understood that when an element or layer is referred to as being “on,” “coupled to,” or “connected to” another element or layer, it can be directly on, directly coupled to or directly connected to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly coupled to,” or “directly connected to” another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
As used in the description of the inventive concept and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates other.
As shown in
Of course, the connection between the material pot 2 and the connection seat 100 is not limited to a threaded connection, but can also be a snap connection or other connection as long as it is possible to tightly connect the material pot 2 to the connection seat 100, and to keep the liquid inside the material pot 2 from leaking.
A liquid filling channel 101 is provided in the gun body 1, the lower end of the liquid filling channel 101 is connected to the material pot 2, the liquid filling channel 101 runs upwardly through the gun body 1, so that the upper end of the liquid filling channel 101 is connected to the outside world; and a sealing cover assembly 5 is provided at the upper end of the gun body 1 for closing off the liquid filling channel 101; and the sealing cover assembly 5 is secured with the liquid filling channel 101 by means of threads or snaps.
The liquid filling channel 101 may be upwardly directed through the upper end of the gun body 1; or it may be upwardly directed through the side of the gun body 1.
In this embodiment, as shown in
Specifically, as shown in
The lower end of the guide hopper 102 is not limited to being connected to the upper end of the liquid filling channel 101, and the lower end of the guide hopper 102 may be integrally molded to extend through the liquid filling channel 101 into communication with the material pot 2.
As shown in
In this embodiment, in order to facilitate installation and reliable fixation of the cover sealing ring 512, there is also a liner 511 on the filling cap 510, the cover sealing ring 512, wrapped around the liner 511, the liner 511 is provided with a flange extending outwardly, and the flange is used to prevent the cover sealing ring 512 from falling off, and in order to reliably connect the liner 511 with the filling cap 510, a clasp or a screw, etc., may be provided between the liner 511 and the filling cap 510.
As shown in
A button cover 523 is provided on the top of the unlocking lever 522 for aesthetics and ease of pressing the unlocking lever 522.
The bottom of the unlocking lever 522 is provided with an unlocking lever resetting element. In this embodiment, the unlocking lever resetting element is preferably a spring, but of course it can also be a part with elasticity such as rubber, which can play the role of allowing the unlocking lever 522 to be reset.
The locking assembly 52 is not limited to the above structure, but can also be directly hand-triggered locking clasp 521, thereby realizing the locking and loosening of the lock tongue 5210 on the filling cap 510, as long as it can be realized that the cover body assembly 51 is convenient to realize the closure and opening of the guide hopper 102.
As shown in
Both the connecting rod 33 and the thimble 31 are connected to the connecting sleeve 32 by screws or pins.
As shown in
In this embodiment, the thimble reset element is preferably a spring, the spring resting against the rear end of the end cap 35 and the connecting rod 33. In this embodiment, the connecting sleeve 32 needs to be made of a rigid material in order to drive the ejector pin in a reciprocating motion.
In this embodiment, although the thimble resetting element is preferably a spring, it can also be a part with elasticity such as rubber, which can serve to reset the connecting rod 33 is sufficient.
This embodiment also discloses an additional embodiment of the thimble assembly 3 as follows, the thimble reset element is a spring, the thimble 31 is integrally provided with a first locating tab 310, the spring is sleeved on the thimble 31, and the spring rests against the first locating tab 310 between the first locating tab 310 and the liquid outlet channel 107 on the gun body 1. In this embodiment, the connecting sleeve 32 can be made of a rigid material or a flexible material, as the reset of the thimble 31 does not require the connecting sleeve 32 to be driven.
As shown in
In the embodiment described above, the thimble 31 may also be split, as shown in
As shown in
The trigger assembly 4 comprises a trigger body 40 hinged at the upper end to the gun body 1, the trigger body 40 is connected to a thimble pull rod 34, by triggering the trigger body 40, the thimble pull rod 34 can drive the connecting rod 33 to realize axial movement; and there is also a trigger knob 401 provided on the trigger body 40 for adjusting the rotation angle of the trigger body 40.
As shown in
The reset element is provided between the left push block 61 and the gun body 1 or between the right push block 62 and the gun body 1. In this embodiment, two springs are used for the reset element. Of course, the reset elements are not limited to the use of springs, but can also be rubber and other parts with elasticity, which can allow the left push block 61 or the right push block 62 to play the role of reset.
When the left push block 61 and the right push block 62 are in a free state, the notch 640 made in the limiting block 64 avoids the multi-tooth turntable 60, when the limiting block 64 is translated by pushing the left push block 61 or the right push block 62, the limiting block 64 extends between the teeth of the multi-tooth turntable 60, restricting the rotation of the multi-tooth turntable 60. In this way, the trigger assembly 4 is in a fixed position, and the trigger assembly 4 causes the thimble assembly 3 to be in a fixed position by means of the thimble pull rod 34, so that the opening distance between the thimble 31 and the nozzle of the spray gun remains constant, which enables the sprayed liquid to be continuous and uniform, and the user does not need to force the trigger body 40 all the time, which greatly increases the convenience of use.
As shown in
In this embodiment, the bottom surface of the material pot 2 is set in the shape of a funnel and a liquid accumulation portion 200 is formed at the lowest position, and the bottom end of the suction tube 21 extends into the liquid accumulation portion 200, so that when the liquid in the material pot 2 is less, the liquid can be accumulated into the liquid accumulation portion 200 through the funnel-shaped bottom surface, and the liquid can be completely sucked up and sprayed out to avoid waste.
In order to promote the aesthetics of the material pot 2 and its stability when placed, a pot seat 201 is provided at the bottom of the material pot 2, and the pot seat 201 and the material pot 2 can be connected by means of screws or clasps or the like.
As shown in
As shown in
The function of the material pot air inlet channel 1010 is to introduce the gas passed into the spray gun into the material pot 2, pressurize the liquid to be sprayed in the material pot 2, and cause the liquid to be sprayed through the nozzle of the spray gun, specifically in this embodiment, the pressurized liquid passes through the suction tube 21, the suction channel 109, and the liquid outlet channel 107 in turn before being sprayed out by the nozzle of the spray gun.
Therefore, the material pot air inlet channel 1010 can be provided at any suitable location on the gun body 1 as long as it is capable of introducing gas into the material pot 2.
In this embodiment, the material pot air inlet channel 1010 is integrally molded with the gun body 1, at the bottom end of the material pot air inlet channel 1010, a tab extending into the material pot 2 is reserved, and a one-way valve is provided on the tab, and the one-way valve is used to prevent the liquid in the material pot 2 from entering into the air outlet channel of the gun body, and in this embodiment, the one-way valve is a duckbill valve.
As shown in
As shown in
As shown in
In this embodiment, a spool sealing ring 72 is provided between the valve spool 70 and the gun body 1, and a non-slip end cap 73 is also provided over the adjusting knob 71.
At the front end of the gun body 1 there is provided a nozzle assembly 8, the nozzle assembly 8 comprising a nozzle seat 80 fixedly connected to the gun body 1, on the nozzle seat 80 there is provided a nozzle 81, the thimble 31 cooperating with the nozzle 81, between the gun body 1 and the nozzle seat 80 there is provided a wind guide sleeve 82, and on the wind guide sleeve 82 there is also provided a flow cap 83 which can adjust the amount of air coming out of the wind guide sleeve 82, and the flow cap 83 is fixed to the gun body 1 by means of a fastening knob 84.
The wind guide sleeve 82 is used to direct airflow through the first air outlet channel 1011 and the second air outlet channel 1012, respectively; and the air valve assembly 7 may introduce airflow within the first air outlet channel 1011 into the second air outlet channel 1012.
The flow cap 83 is formed between the flow cap 83 and the nozzle 81 with an air outlet for airflow within the first air outlet channel 1011, and the flow cap 83 is further provided with an air outlet hole for airflow within the second air outlet channel 1012.
The gun body 1 is also provided with a quick coupling 13 for supplying compressed air to the gun, the quick coupling 13 being in communication with the first air outlet channel 1011.
The sealing cover assembly 5 includes a cover body assembly 51 and a locking assembly 52, before the spray gun works, press the button cover 523, open the cover body assembly 51, and then pour liquid into the guide hopper 102, and the liquid flows into the material pot 2 through the liquid filling channel 101.
By setting the liquid filling channel 101, liquid can be added to the material pot 2 from the top or side of the gun without unscrewing the material pot 2 from the gun, so that the liquid on the suction tube 21 will not drip to the ground to pollute the environment and cause waste, and the suction tube 21 will not stick to the sundries, at the same time, with the solution, the cover body assembly 51 is located on the top or the side of the gun body 1, and the space for the operation of the liquid when adding liquid is not affected at all by the other parts of the gun, so as to realize the purpose of convenient and rapid liquid filling.
When working, compressed air is connected to the quick coupling 13, and the airflow connected from the quick coupling 13 is blown out from the air outlet after passing through the first air outlet channel 1011, the trigger body 40 is triggered, and the liquid in the material pot 2 is pressurized to enter the liquid outlet channel 107 and then sprayed out from the nozzle, and both of them are mixed to form an atomized liquid fog, which is sprayed out in a set shape under the limitation of the flow cap 83. When it is necessary to change the shape of the liquid mist, the shape of the liquid mist is changed by turning the adjusting knob 71 so that the airflow from the first air outlet channel 1011 enters the second air outlet channel 1012 and is blown out from the air outlet holes. Further turning the adjusting knob 71 adjusts the flow rate and flow rate of the airflow through the second air outlet channel 1012, thereby obtaining different shapes of the liquid mist.
The terms “comprising,” “including,” “having,” and the like are synonymous and are used inclusively, in an open-ended fashion, and do not exclude additional elements, features, acts, operations, and so forth. Also, the term “or” is used in its inclusive sense (and not in its exclusive sense) so that when used, for example, to connect a list of elements, the term “or” means one, some, or all of the elements in the list. The use of “adapted to” or “configured to” herein is meant as open and inclusive language that does not foreclose devices adapted to or configured to perform additional tasks or steps. Additionally, the use of “based on” is meant to be open and inclusive, in that a process, step, calculation, or other action “based on” one or more recited conditions or values may, in practice, be based on additional conditions or values beyond those recited. Similarly, the use of “based at least in part on” is meant to be open and inclusive, in that a process, step, calculation, or other action “based at least in part on” one or more recited conditions or values may, in practice, be based on additional conditions or values beyond those recited. Headings, lists, and numbering included herein are for ease of explanation only and are not meant to be limiting.
The various features and processes described above may be used independently of one another, or may be combined in various ways. All possible combinations and sub-combinations are intended to fall within the scope of the present disclosure. In addition, certain method or process blocks may be omitted in some implementations. The methods and processes described herein are also not limited to any particular sequence, and the blocks or states relating thereto can be performed in other sequences that are appropriate. For example, described blocks or states may be performed in an order other than that specifically disclosed, or multiple blocks or states may be combined in a single block or state. The example blocks or states may be performed in serial, in parallel, or in some other manner. Blocks or states may be added to or removed from the disclosed examples. Similarly, the example systems and components described herein may be configured differently than described. For example, elements may be added to, removed from, or rearranged compared to the disclosed examples.
The invention has now been described in detail for the purposes of clarity and understanding. However, those skilled in the art will appreciate that certain changes and modifications may be practiced within the scope of the appended claims.
Conditional language used herein, such as, among others, “can,” “could,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain examples include, while other examples do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more examples or that one or more examples necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular example.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202223040480.3 | Nov 2022 | CN | national |
