HVLP spray gun with locking structure

Abstract

The utility model discloses an HVLP spray gun with a locking structure, and relates to the field of HVLP spray guns, the HVLP spray gun comprises a machine shell assembly, a mounting channel is formed in the machine shell assembly in a penetrating manner, and a motor assembly and a switch are arranged in the machine shell assembly; the spray gun main body is fixed at the upper part of the shell assembly; one end of the trigger feeler lever is slidably arranged in the machine shell assembly through a spring, and the other end of the trigger feeler lever penetrates out of the machine shell assembly and then abuts against the trigger; the trigger lock rod is arranged in the mounting channel in a sliding manner, so that the trigger lock rod slides between a locking position and an opening position, and a trigger block and a stop block are arranged on the trigger lock rod; and the battery pack is electrically connected with the switch and the motor assembly, and the switch is used for controlling on and off of the battery pack so as to control start and stop of the motor assembly. According to the utility model, the locking structure is additionally arranged on the trigger, and the trigger can be pulled only when the locking structure is opened, so that paint is prevented from being sprayed out when the pressure does not meet the spraying requirement, and the spraying quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of HVLP spray guns, in particular to an HVLP spray gun with a locking structure. Background Art

[0002] The HVLP (High Volume Low Pressure) spray system generates a low-pressure, high-volume air flow to apply fluid sprays such as paint, water, oil, stains, finishes, coatings, solvents and solutions to the desired surface. Existing HVLP spray guns generally adopt a layout in which the material pot (spray pot) is installed on the upper part of the housing. Due to the lack of a locking structure on the trigger, the spray gun is not locked after the last use before power is turned on. When the trigger is pressed next time, there is residual pressure in the barrel but the pressure is insufficient. The paint pressure sprayed by the spray gun does not meet the spraying work requirements, which results in a very bad painting situation and affects the spraying experience. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an HVLP spray gun with a locking structure so that paint will not be sprayed out when the trigger is in a locked state.

[0004] The purpose of the utility model is achieved through the following technical solution: This HVLP spray gun with a locking structure includes:

[0005] The housing assembly is formed by buckling a left housing and a right housing, a mounting channel is provided through the housing assembly, and a motor assembly and a switch are arranged in the housing assembly;

[0006] The spray gun body is fixed to the upper part of the housing assembly, and a trigger is arranged at the lower part of the spray gun body;

[0007] A trigger contact rod, one end of which is slidably arranged in the housing assembly through a spring, and the other end of which passes through the housing assembly and abuts against the trigger;

[0008] A trigger lock rod is slidably disposed in the installation channel so that the trigger lock rod slides between a locking position and an unlocking position, and a trigger block and a stop block are disposed on the trigger lock rod; and

[0009] The battery pack is electrically connected to the switch and the motor assembly, and the switch is used to control the power on and off of the battery pack, thereby controlling the start and stop of the motor assembly;

[0010] When the trigger lock rod is in the locked position, the trigger contact rod is blocked by the stop block, so that the trigger remains stationary; when the trigger lock rod is in the open position, the stop block passes over the trigger contact rod, releasing the block on the trigger, and at the same time the trigger block contacts the switch to start the motor assembly.

[0011] As a further technical solution, a slide groove is provided in the housing assembly for slidingly installing the trigger feeler rod.

[0012] As a further technical solution, the trigger contact rod has a first end surface and a second end surface opposite to the first end surface, the first end surface is used to abut against the trigger, and the second end surface is used to contact the stop block.

[0013] As a further technical solution, a spring support plate is arranged in the housing assembly near the second end surface, one end of the spring is pressed against the spring support plate, and the other end is sleeved on the trigger contact rod.

[0014] As a further technical solution, the battery pack is electrically connected to the switch and the motor assembly respectively through battery pack pins.

[0015] As a further technical solution, when the trigger lock rod is in the open position, the trigger block on the trigger lock rod contacts the contact of the switch, so that the switch is turned on.

[0016] The beneficial effects of the utility model are:

[0017] 1. Add a locking structure to the trigger. The trigger can only be pulled when the locking structure is open, to prevent the paint from spraying when the pressure does not meet the spraying requirements, and to improve the spraying quality;

[0018] 2. The lock structure is opened and the switch is triggered, which immediately starts the motor assembly, so that the motor assembly starts working before spraying begins, leaving time for pressurization;

[0019] 3. The motor assembly will only start working when the locking structure is opened. When the locking structure is not opened, the motor will not be powered to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the structure of the utility model after the right casing is hidden.

[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram of area A in the middle.

[0024] Figure 5 It is a structural schematic diagram of the left casing in the utility model.

[0025] Figure 6 It is a schematic diagram of the structure of the trigger contact rod in the utility model.

[0026] Figure 7 It is a structural schematic diagram of the trigger lock rod in the utility model.

[0027] Figure 8 It is a structural schematic diagram of the locking structure (trigger lock rod) of the utility model when it is in the locking position.

[0028] Fig. 9 It is a structural schematic diagram of the locking structure (trigger lock rod) of the utility model when it is in the open position.

[0029] Explanation of the accompanying drawings: spray gun body 1, trigger 2, motor assembly 3, housing assembly 4, left housing 4a, right housing 4b, battery pack pin 5, battery pack 6, spring 7, trigger contact rod 8, trigger lock rod 9, switch 10, knob screw 11, knob 12, installation channel 13, trigger block 14, stop block 15, slide groove 16, spring support plate 17, contact 18, first end face 19, second end face 20. DETAILED DESCRIPTION

[0030] The utility model will be described in detail below with reference to the accompanying drawings:

[0031] Example: As shown in the attached Figures 1 to 9 As shown, this HVLP spray gun with a locking structure includes a spray gun body 1, a trigger 2, a motor assembly 3, a housing assembly 4, a left housing 4a, a right housing 4b, a battery pack pin 5, a battery pack 6, a spring 7, a trigger contact rod 8, a trigger locking rod 9, a switch 10, a knob screw 11, a knob 12, a mounting channel 13, a trigger block 14, a stop block 15, a slide groove 16, a spring support plate 17, a contact 18, a first end face 19 and a second end face 20.

[0032] Reference Figure 2 The left housing 4a and the right housing 4b are interlocked and fixed with screws to form a housing assembly 4. Figure 5 As shown, an installation channel 13 is formed through the upper part of the housing assembly 4, and a trigger lock rod 9 is slidably arranged in the installation channel 13, and both ends of the trigger lock rod 9 are exposed from the housing assembly 4, and the trigger lock rod 9 can be pushed from the left and right ends when in use.

[0033] Further, such as Figure 3As shown, the trigger lock rod 9 can slide between the locked position and the open position. When the trigger lock rod 9 is pushed to the left, the lock is released and the position is opened. When the trigger lock rod 9 is pushed to the right, the lock position is entered. The spray gun body 1 (including the existing conventional structures such as the boost chamber / gun body assembly, the barrel assembly, the nozzle assembly, etc., which will not be described in detail) is fixedly installed on the upper part of the housing assembly 4, and the trigger 2 is arranged at the lower part of the spray gun body 1. A switch 10 (using a micro switch) is arranged at the upper part of the housing assembly 4, a motor assembly 3 is arranged at the right position of the housing assembly 4, and a battery pack 6 is arranged at the lower part of the housing assembly 4. The battery pack 6 is electrically connected to the switch 10 and the motor assembly 3 through the battery pack pin 5. The switch 10 controls the power on and off of the battery pack 6, thereby controlling the start and stop of the motor assembly 3.

[0034] Reference Figure 4 , 5 A slide groove 16 is provided in the housing assembly 4, and the trigger feeler rod 8 is relatively slidably installed in the slide groove 16. Figure 6 As shown, the trigger feeler rod 8 has a first end surface 19 ( Figure 6 right side) and a second end face 20 ( Figure 6 Left side), a spring support plate 17 is arranged near the second end face 20 in the housing assembly 4, one end of the spring 7 is pressed against the spring support plate 17, and the other end is sleeved on the trigger feeler rod 8. The inner side of the trigger feeler rod 8 is slidably arranged in the housing assembly 4 through the spring 7, and the outer side of the trigger feeler rod 8 passes through the housing assembly 4 and abuts against the trigger 2. In the natural state, the spring 7 is in an extended state, so that the first end face 19 of the trigger feeler rod 8 abuts against the trigger 2. Figure 7 As shown, a trigger block 14 is arranged on the upper part of the trigger lock rod 9, and a stop block 15 is arranged on the lower part of the trigger lock rod 9.

[0035] like Figure 8 As shown, when the trigger lock rod 9 is in the locked position, the stop block 15 blocks the front of the second end surface 20 of the trigger feeler rod 8, so that the trigger 2 cannot be pulled. Fig. 9 As shown, when the trigger lock rod 9 is in the open position, the stop block 15 moves close to the switch 10 and passes over the trigger contact rod 8, releasing the block on the trigger 2. At the same time, the trigger block 14 on the trigger lock rod 9 contacts the contact 18 of the switch 10, turning on the switch 10, energizing the battery pack 6, and then starting the motor assembly 3.

[0036] The working process of the utility model is as follows: when the trigger lock rod 9 is in the locked state, the switch 10 is not turned on (the trigger block 14 does not contact the contact 18 of the switch 10), the battery pack 6 is not powered, the motor assembly 3 is in the closed state, the second end face 20 of the trigger feeler rod 8 is blocked by the stopper 15, and is in the locked state, the trigger 2 cannot be pulled, so there will be no pressure in the spray gun body 1 and the paint will not be sprayed out. When the trigger lock rod 9 is in the open state (pushed to the left to the bottom), the trigger block 14 on the trigger lock 9 contacts the contact 18 of the switch 10 to turn on the switch 10, the battery pack 6 is powered, and the motor assembly 3 starts to work first. At the same time, since the stopper 15 passes over the second end face 20 and releases the blockage of the trigger feeler rod 8, the trigger 2 can be pulled normally and can work normally. Since the motor assembly 3 has been started, the machine has entered normal operation, and the pressure and the like have reached the requirements and can be sprayed. When shutting down, push the trigger lock rod 9 in the opposite direction (to the right) to the bottom.

[0037] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A HVLP spray gun with a locking structure, characterized in that: include: A housing assembly (4) having a mounting passage (13) extending therethrough, wherein a motor assembly (3) and a switch (10) are disposed within the housing assembly (4); The spray gun body (1) is fixed to the upper part of the housing assembly (4), and a trigger (2) is arranged at the lower part of the spray gun body (1); A trigger contact rod (8), one end of which is slidably arranged in the housing assembly (4) through a spring (7), and the other end of which passes through the housing assembly (4) and abuts against the trigger (2); A trigger lock rod (9) is slidably arranged in the installation channel (13) so that the trigger lock rod (9) slides between a locking position and an unlocking position, and a trigger block (14) and a stop block (15) are arranged on the trigger lock rod (9); and The battery pack (6) is electrically connected to the switch (10) and the motor assembly (3), and the switch (10) is used to control the power on and off of the battery pack (6), thereby controlling the start and stop of the motor assembly (3); When the trigger lock rod (9) is in the locked position, the trigger contact rod (8) is blocked by the stop block (15), so that the trigger (2) remains stationary; when the trigger lock rod (9) is in the open position, the stop block (15) passes over the trigger contact rod (8), releasing the block on the trigger (2), and at the same time the trigger block (14) contacts the switch (10), starting the motor assembly (3).

2. The HVLP spray gun with a locking structure according to claim 1, characterized in that: The housing assembly (4) is provided with a slide groove (16) for slidingly installing the trigger contact rod (8).

3. The HVLP spray gun with a locking structure according to claim 1, characterized in that: The trigger contact rod (8) has a first end surface (19) and a second end surface (20) opposite to the first end surface (19); the first end surface (19) is used to contact the trigger (2), and the second end surface (20) is used to contact the stop block (15).

4. The HVLP spray gun with a locking structure according to claim 3, characterized in that: A spring support plate (17) is arranged in the housing assembly (4) near the second end surface (20); one end of the spring (7) is pressed against the spring support plate (17) and the other end is sleeved on the trigger contact rod (8).

5. The HVLP spray gun with a locking structure according to claim 1, characterized in that: The battery pack (6) is electrically connected to the switch (10) and the motor assembly (3) respectively via the battery pack pins (5).

6. The HVLP spray gun with a locking structure according to claim 1, characterized in that: When the trigger lock rod (9) is in the open position, the trigger block (14) on the trigger lock rod (9) contacts the contact (18) of the switch (10), so that the switch (10) is turned on.

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