CN211838567U

CN211838567U - Tool-free trigger assembling and disassembling structure of paint spraying gun

Info

Publication number: CN211838567U
Application number: CN202020087540.9U
Authority: CN
Inventors: 郑日富
Original assignee: Taizhou Tuba Machinery Co ltd
Current assignee: Taizhou Tuba Machinery Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-11-03
Anticipated expiration: 2030-01-15

Abstract

The invention discloses a tool-free trigger assembling and disassembling structure of a paint spraying gun, which comprises a trigger body, wherein an arc-shaped pressing part is arranged at the lower part of the trigger body, two connecting arms are symmetrically arranged at two upward sides of the top of the arc-shaped pressing part, the front sides of the upper parts of the two connecting arms are correspondingly provided with a notch circular groove which is obliquely arranged downwards, a downward convex circular bulge is arranged above the notch of the notch circular groove, and a straight structure is arranged below the opening part of the notch circular groove; two ends of a trigger pin of the paint spraying gun can be directly clamped into the notch circular groove through the notch to realize the movable connection of the two; the arc pressing part is provided with a U-shaped groove in the middle of the top for the needle plug to pass through, and the rear parts of the two sides of the U-shaped groove are connected with the stop step on the needle plug in an abutting mode. The invention redesigns the structure of the trigger, not only does not need to remove the needle plug when the trigger is disassembled, but also realizes tool-free disassembly and assembly between the trigger and the trigger pin, and has the characteristics of convenient disassembly and assembly, simple structure and practicality.

Description

Tool-free trigger assembling and disassembling structure of paint spraying gun

Technical Field

The invention relates to a paint spray gun, in particular to a tool-free trigger assembling and disassembling structure of the paint spray gun.

Background

The structure of the existing trigger is shown in fig. 1 and 2, the existing trigger adopts an integrated metal structure, the whole trigger body 1 'comprises an arc-shaped pressing part 11' positioned at the lower part, two connecting arms 12 'are symmetrically arranged on two sides above the arc-shaped pressing part 11' upwards, the upper parts of the two connecting arms 12 'are correspondingly provided with upper connecting holes 121', the two upper connecting holes 121 'are movably hinged with the upper part of a paint spraying gun body 3' through a trigger pin 2 ', and in order to ensure the connection effectiveness, locking snap springs 21' are arranged at the parts of the two ends of the trigger pin 3 'extending out of the upper connecting holes 121'; the middle parts of the two connecting arms 12 ' are symmetrically provided with lower connecting holes 122 ', a motor pin 4 ' is arranged between the two lower connecting holes 122 ', the middle part of the motor pin 4 ' is provided with a needle plug hole which is through from front to back, a needle plug 5 ' of a paint spray gun penetrates through the needle plug hole to realize the movable connection of the two, and in order to ensure the connection effectiveness, the parts of the two ends of the motor pin 4 ' which extend out of the lower connecting holes 122 ' are provided with limiting snap springs 41 '. The arc-shaped pressing part 11 'is connected with the air valve assembly 6'.

In operation, the entire trigger is rotated relative to the trigger pin 2 'by finger actuation of the arcuate pressing portion 11'. In the process, the arc-shaped pressing part 11 'drives the air valve assembly 5' to retract and open, and meanwhile, the flexible pin 4 'drives the needle plug 5' to move backwards to open the air quantity valve so as to perform paint spraying.

Here, in the use of the paint spray gun, in order to avoid interference caused by paints of different colors, when the paint spray operation is performed by changing the paints of different colors, the parts of the paint spray gun must be thoroughly cleaned, and this inevitably involves the disassembly and assembly of the air valve assembly 6 ', and the disassembly and assembly of the air valve assembly 6' must be performed after the trigger is removed. However, in the above structure, the needle plug 5 ' passes through the needle plug hole on the mechanical pin 4 ' to realize the movable connection between the two, so the needle plug 5 ' must be removed first to remove the trigger, which causes great inconvenience to the removal of the trigger. In addition, the upper part of the existing trigger connecting arm 12 'is connected with the trigger pin 2' through the locking clamp spring 21 ', the middle part of the connecting arm 12' is connected with the motor pin 4 'through the limiting clamp spring 41', and the connecting arm can be disassembled and assembled only through a special tool in use, so that the operation is complex and troublesome, and the disassembling and assembling efficiency of the paint spraying gun is seriously influenced.

Disclosure of Invention

In order to solve the problems, the invention designs a tool-free trigger disassembly and assembly structure of a paint spray gun, which redesigns the trigger structure, does not need to disassemble a needle plug when the trigger is disassembled, realizes tool-free disassembly and assembly between the trigger and a trigger pin, and has the characteristics of convenient disassembly and assembly, simple structure and practicality.

The second purpose of the invention is to design the trigger to be composed of the fittings of different materials, which can effectively simplify the processing technique of the trigger and facilitate the later maintenance and repair of the trigger.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a spray gun exempts from instrument dismouting trigger structure, includes the trigger body, and the lower part of trigger body is equipped with the arc and presses the splenium, and the arc is pressed the top both sides symmetry up of splenium and is equipped with two linking arms, its characterized in that: the front sides of the upper parts of the two connecting arms are correspondingly provided with notch circular grooves which are obliquely arranged downwards, downward convex arc bulges are arranged above the notches of the notch circular grooves, and the lower parts of the openings of the notch circular grooves are of straight structures; two ends of a trigger pin of the paint spraying gun can be directly clamped into the notch circular groove through the notch to realize the movable connection of the two; the arc pressing part is provided with a U-shaped groove in the middle of the top for the needle plug to pass through, and the rear parts of the two sides of the U-shaped groove are connected with the stop step on the needle plug in an abutting mode.

Furthermore, the trigger body is composed of a metal framework and a composite plastic push block, the metal framework is provided with an arc pressing part and two connecting arms, the composite plastic push block comprises an intermediate part provided with a U-shaped groove, a conical plug is arranged below the front side of the intermediate part and can be inserted into the arc pressing part in the rear direction, two connecting parts are respectively arranged on two sides of the intermediate part, and each connecting part is provided with a jack which is communicated up and down and is connected with the connecting arm on the corresponding side in an inserting mode.

Furthermore, the middle part is provided with a wear-resistant metal insert at the periphery of the rear part of the U-shaped groove, and a part of the metal insert protrudes to be abutted against and contacted with a stop step on a needle plug of a paint spray gun.

Furthermore, the outer wall of the connecting part is provided with a mounting bulge, and the mounting bulge is provided with a detachable color identification block.

According to the trigger designed by the invention, the notch circular groove arranged on the front side of the connecting arm is connected with the trigger pin in a clamping manner, so that the trigger and the trigger pin can be released by only lifting the trigger and moving the trigger backwards for a certain distance in use, and tool-free quick assembly and disassembly of the trigger and the trigger pin are realized.

In addition, the trigger is movably connected with the needle plug through the U-shaped groove, and the U-shaped groove is of a structure with an upper opening, so that the trigger body can be directly moved downwards to separate from the needle plug once the clamping between the upper part of the trigger body and the trigger pin is released, namely the whole trigger is dismounted without dismounting the needle plug first, and the dismounting steps of the trigger can be greatly simplified.

Moreover, the whole trigger body is formed by combining the metal framework and the composite plastic push block, and compared with the trigger body, the metal framework has greatly simplified structure, is convenient to produce and process, and can reduce the production cost to a certain extent; the composite plastic push block serving as the other accessory is a replaceable part, once the U-shaped groove is damaged due to long-term abrasion in use, the composite plastic push block can be replaced independently, and great convenience is provided for later maintenance and repair of the trigger.

Drawings

FIG. 1 is a schematic perspective view of a conventional trigger;

FIG. 2 is a schematic view of the installation of a prior art trigger on a paint gun;

FIG. 3 is a schematic perspective view of the trigger of the present invention;

FIG. 4 is a schematic view of the installation of the trigger of the present invention on a paint gun;

fig. 5 is an exploded view of the trigger of the present invention.

Detailed Description

As shown in fig. 3 and 4, a trigger structure of a paint spraying gun without disassembling and assembling tools comprises a trigger body 1, an arc pressing part 11 is arranged at the lower part of the trigger body 1, two connecting arms 12 are symmetrically arranged on two sides of the top of the arc pressing part 11 upward, a notch circular groove 121 which is obliquely arranged downwards is correspondingly arranged on the front side of the upper part of each connecting arm 12, a downward convex circular protrusion 1211 is arranged above the notch of the notch circular groove 121, and a straight structure 1222 is arranged below the opening of the notch circular groove 121. When assembling, the two ends of the trigger pin 2 of the paint spray gun can be directly clamped into the notch circular groove 121 through the notch to realize the movable connection of the two. When the disassembly tool is disassembled, the constraint of the trigger and the disassembly tool can be removed only by lifting the trigger and moving the trigger backward for a certain distance, the whole disassembly and assembly process does not need to use a special tool, the disassembly and assembly without the tool is realized, and the disassembly and assembly tool has the characteristics of convenience and quickness in disassembly and assembly.

The middle of the top of the arc pressing part 11 is provided with a similar U-shaped groove 13 for the needle plug 3 to pass through, and the rear parts of the two sides of the similar U-shaped groove 13 are connected with the stop step on the needle plug 3 in an abutting mode. Because of the structure of a kind of U-shaped groove 13 for an upper shed, in case the block of trigger body 1 top and trigger round pin 2 is relieved, directly move down trigger body 1 this moment and can realize its and the separation of needle stopper 3, whole trigger is demolishd and need not dismouting needle stopper 3 earlier promptly, and it can simplify the dismouting step of trigger greatly, promotes dismouting efficiency.

In addition, as shown in fig. 3, in order to simplify the processing technology of the trigger and facilitate the later maintenance and repair of the trigger, the trigger body 1 of the invention is composed of a metal framework 1a and a composite plastic push block 1 b.

The metal framework 1a is provided with an arc pressing part 11 and two connecting arms 12, the composite plastic push block 1b comprises an intermediate part 1b1 provided with a U-shaped groove 13, a tapered plug 1b2 is arranged below the front side of the intermediate part 1b1, the tapered plug 1b2 can be inserted into the rear part of the arc pressing part 11 in a matching manner, two sides of the intermediate part 1b1 are respectively provided with a connecting part 1b3, and each connecting part 1b3 is provided with a jack 1b31 which is vertically communicated and is spliced with the connecting arm 12 on the corresponding side.

Compared with the structure of the trigger body 1, the structure of the metal framework 1a in the structure is greatly simplified, so that the production mold is simplified, the production difficulty is reduced, the production and the processing are facilitated, and the production cost can be reduced to a certain extent. And the composite plastic push block 1b as another accessory has lower cost compared with the metal material, and is a replaceable part, once the similar U-shaped groove 13 is damaged due to long-term abrasion in use, the composite plastic push block 1b can be independently replaced, thereby reducing the cost and providing great convenience for the later maintenance and repair of the trigger.

Although the composite plastic push block 1b is an alternative, the problem of wear resistance is also considered, for this reason, the middle part of the composite plastic push block 1b of the present invention is provided with a wear-resistant metal insert 1b4 at the rear periphery of the U-like groove 13, and the metal insert 1b4 protrudes partially to contact against the stop step on the paint gun needle plug 3. The structure ensures that the metal insert 1b4 contacts the needle plug 3, and the composite plastic push block 1b does not contact the needle plug 3, thereby effectively avoiding the use abrasion of the composite plastic push block 1b and prolonging the service life.

The outer wall of the connecting part 1b3 is provided with a mounting projection 1b32, and the mounting projection 1b32 is provided with a replaceable color identification block 1b 5. Corresponding colour identification piece 1b5 can be changed according to the paint colour that uses in use, and it demonstrates for the operator with striking audio-visual mode, makes things convenient for operator's discernment, avoids taking place the confusion use that the mistake believes and cause different colours paint, can promote the convenience of use of spray gun to a certain extent, and above colour identification piece 1b5 also can decorate the spray gun, promotes the whole aesthetic property of spray gun.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a spray gun exempts from instrument dismouting trigger structure, includes the trigger body, and the lower part of trigger body is equipped with the arc and presses the splenium, and the arc is pressed the top both sides symmetry up of splenium and is equipped with two linking arms, its characterized in that: the front sides of the upper parts of the two connecting arms are correspondingly provided with notch circular grooves which are obliquely arranged downwards, downward convex arc bulges are arranged above the notches of the notch circular grooves, and the lower parts of the openings of the notch circular grooves are of straight structures; two ends of a trigger pin of the paint spraying gun can be directly clamped into the notch circular groove through the notch to realize the movable connection of the two; the arc pressing part is provided with a U-shaped groove in the middle of the top for the needle plug to pass through, and the rear parts of the two sides of the U-shaped groove are connected with the stop step on the needle plug in an abutting mode.

2. The tool-less disassembly trigger structure of a paint gun of claim 1, wherein: the trigger body comprises metal framework and composite plastic ejector pad combination, the last arc that is setting up of metal framework is pressing splenium and two linking arms, the composite plastic ejector pad includes one and is equipped with the intermediate part of class U-shaped groove, the front side below of intermediate part is equipped with the toper plug, and the toper plug can cooperate to insert the arc and press splenium rear the inside, and the both sides of intermediate part respectively are equipped with a connecting portion, and the jack that link up from top to bottom is equipped with on every connecting portion is pegged graft with the linking arm that corresponds the side.

3. The tool-less disassembly trigger structure of a paint gun of claim 2, wherein: and the middle part is provided with a wear-resistant metal insert at the periphery of the rear part of the U-shaped groove, and the metal insert protrudes out of a part to be abutted against and contacted with a stop step on a needle plug of a paint spraying gun.

4. A tool-less disassembly trigger structure of a paint spray gun as claimed in claim 2 or 3, wherein: the outer wall of the connecting part is provided with a mounting bulge, and the mounting bulge is provided with a detachable color identification block.