Quick detachable trigger structure and spray gun

Abstract

The utility model provides a kind of quick detachable trigger structure and spray gun, belong to spray gun equipment technical field.Trigger structure includes trigger, sleeve is equipped with on trigger, sleeve is provided with movable quick release pin, spring is equipped with on quick release pin, spring is located in sleeve, the end of sleeve is provided with fender, another end of sleeve is provided with mounting groove, ball is provided in mounting groove, when ball is contacted with quick release pin, ball protrudes from the notch of mounting groove and does not separate from mounting groove, one end of quick release pin is stretched from fender, another end of quick release pin is provided with gap for accommodating ball, when the end of quick release pin is pressed, spring is in compression state and ball is opposite to gap.The trigger structure sets spring inside sleeve, the part of quick release pin that is stretched out trigger (gun body) can be made shorter, operator's hand is not easy to touch quick release pin, and good reduction or avoid interference.

Description

Technical Field

[0001] This utility model belongs to the technical field of spray gun equipment, and relates to a quick-detachable trigger structure and spray gun. Background Technology

[0002] A spray gun is a device that uses the rapid release of liquid or compressed air as its power source. Spray guns can be used directly with paint or installed in automated equipment, such as automatic glue sprayers, automatic paint sprayers, and coating machines. For an explanation of the working principle of a spray gun, please refer to patent document application number 201821567026.4, which describes an easily detachable spray gun.

[0003] In the existing technology, the trigger pin on the spray gun is often a device with a groove cut on a pin shaft and a C-shaped retaining spring used to lock the trigger to the gun body. Because the spray gun needs to be disassembled and cleaned frequently, this trigger device requires tools to disassemble and is not easy to disassemble.

[0004] Existing quick-release pins have two problems that prevent their direct application to spray guns: Existing quick-release pins have a dedicated location (mounting part 16) at one end for mounting the spring and pressing device. Because sufficient space must be provided for the spring structure, this end is both large and long (e.g., ...). Figure 8 and Figure 9 As shown in the mounting part 16, when this structure is installed on the spray gun, the operator's fingers are prone to colliding with the mounting part 16 structure when holding the spray gun, which may interfere with the operation of the spray gun or even cause finger injuries. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in the existing technology by providing a quick-release trigger structure. The technical problem to be solved by this utility model is: how to quickly release the trigger without causing collision interference between the quick-release pin and the operation of the spray gun.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A quick-release trigger structure includes a trigger with a sleeve passing through it. A movable quick-release pin is disposed within the sleeve. The quick-release pin is characterized by having a spring sleeved on it, the spring located within the sleeve. One end of the sleeve has a retaining flange, and the other end has a mounting groove containing a ball bearing. When the ball bearing contacts the quick-release pin, it protrudes from the groove opening and remains within the groove. One end of the quick-release pin extends from the retaining flange, and the other end has a notch for accommodating the ball bearing. When the end of the quick-release pin is pressed, the spring is compressed, and the ball bearing aligns with the notch.

[0008] In use, the sleeve is inserted into the gun body and passes through the trigger. The trigger is connected to the gun body through the sleeve. When the quick release pin is not pressed, the ball contacts the quick release pin, and the quick release pin pushes the ball out. Part of the ball protrudes from the sleeve. A retaining edge is provided on the other side of the sleeve. The trigger is limited between the ball and the retaining edge and will not fall off.

[0009] During disassembly, press the end of the quick release pin near the stop. The spring is compressed, and the notch on the quick release pin aligns with the ball. If the ball is above the sleeve, it will fall into the notch under gravity, no longer obstructing the trigger. Pressing the end of the sleeve where the ball is located will remove the sleeve from the trigger, and the trigger will also be removed quickly and easily. If the ball is below or between above and below the sleeve, pressing the end of the sleeve where the ball is located will move the sleeve relative to the trigger. When the ball contacts the trigger (the trigger has a through hole for the sleeve to pass through, and the periphery of the through hole contacts the ball), the trigger will push the ball into the notch, and the ball will no longer obstruct the trigger. The sleeve can then continue to move, removing the sleeve from the trigger, and the trigger will also be removed quickly and easily.

[0010] After disassembly, release the quick release pin. The quick release pin will return to its original position under the elastic force of the spring. When the quick release pin moves, the ball will disengage from the notch, and the quick release pin will push the ball out again.

[0011] This invention employs a quick-release pin structure. The trigger is mounted on the gun body via the quick-release pin, and the trigger can be removed by pressing the quick-release pin. This trigger structure houses the spring inside the sleeve, and after installation, the spring is also located inside the gun body. This allows for a shorter portion of the quick-release pin extending from the trigger (gun body), reducing the operator's chance of accidentally touching the quick-release pin and minimizing or avoiding interference, thus facilitating operation. Furthermore, with the spring concealed inside the gun body and the quick-release pin extending from the trigger (gun body) shorter, the overall trigger structure is more aesthetically pleasing.

[0012] In the aforementioned quick-release trigger structure, there are two mounting slots arranged opposite to each other. Each mounting slot is provided with a ball bearing that can protrude from the opening of the corresponding mounting slot without detaching from the mounting slot. There are also two notches arranged opposite to each other. When the end of the quick-release pin is pressed, the spring is in a compressed state and the ball bearings are respectively opposite to the corresponding notches.

[0013] When the quick release pin is not pressed, it pushes out two balls, which are positioned opposite each other to limit the trigger and better prevent the trigger from falling off.

[0014] During disassembly, press the end of the quick release pin so that the notch on the quick release pin aligns with the ball. If the ball is above the sleeve, it will fall into the notch under gravity and will no longer obstruct the trigger. If the ball is below the sleeve or between the top and bottom, press the end of the sleeve. The sleeve will move relative to the trigger. When the ball contacts the trigger (the trigger has a through hole for the sleeve to pass through, and the periphery of the through hole contacts the ball), the trigger pushes the ball into the notch, and the ball will no longer obstruct the trigger. Then, push the sleeve to continue moving, removing the sleeve from the trigger and quickly and easily removing the trigger.

[0015] In the aforementioned quick-release trigger structure, the width of the mounting groove gradually decreases from the inside to the outside, and the diameter of the ball is greater than the outer width of the mounting groove.

[0016] The mounting groove has a structure that is larger inside and smaller outside. The diameter of the ball is larger than the width of the outside of the mounting groove. When the quick release pin pushes the ball out, part of the ball protrudes from the sleeve, but the ball will not detach from the mounting groove.

[0017] In the aforementioned quick-release trigger structure, the sleeve is provided with a receiving groove, the spring is located in the receiving groove, and the end of the quick-release pin is provided with a protruding edge. When the end of the quick-release pin is pressed, the two ends of the spring abut against the inner wall of the receiving groove and the protruding edge respectively and are in a compressed state.

[0018] The receiving groove is used to install the spring. When the end of the quick release pin is pressed, the inner wall and the convex edge of the receiving groove press the spring, thereby generating spring force.

[0019] In the aforementioned quick-release trigger structure, a pressure cap is provided on the end of the quick-release pin near the spring, and the periphery of the pressure cap protrudes from the circumference of the quick-release pin.

[0020] The area of ​​the pressure cap is larger than the cross-section of the quick release pin. By pressing the quick release pin with the pressure cap, the pressing area is larger, and the operator's hand is less likely to be hurt.

[0021] In the aforementioned quick-release trigger structure, a countersunk hole is provided on the outer side of the retaining edge. When the end of the quick-release pin is pressed and the ball is opposite to the notch, the pressure cap is embedded in the countersunk hole and abuts against the inner wall of the countersunk hole. The pressure cap is flush with the periphery of the countersunk hole.

[0022] After the quick-release pin is pressed into place, the cap is embedded in the countersunk hole and abuts against the inner wall of the countersunk hole. The cap is flush with the perimeter of the countersunk hole, and the countersunk hole plays a good positioning role for the cap. When the quick-release pin cannot be moved, it indicates that it has been pressed to the required position.

[0023] In the aforementioned quick-release trigger structure, when one end of the quick-release pin is pressed and the ball is aligned with the notch, the other end of the quick-release pin is flush with the end of the sleeve or located inside the sleeve.

[0024] When pressed into place, the end of the quick-release pin is flush with or inside the sleeve, and will not protrude. During disassembly, the operator can press the sleeve, avoiding direct contact between the operator's hand and the end of the quick-release pin, thus reducing the risk of pain. The sleeve can be made shorter to further prevent interference between the operator's hand and the sleeve.

[0025] In the aforementioned quick-release trigger structure, when one end of the quick-release pin is pressed and the ball is aligned with the notch, the other end of the quick-release pin extends from the end of the sleeve.

[0026] In existing quick-release pin structures, to ensure that the end of the quick-release pin near the ball bearing does not protrude outside the sleeve after pressing, the distance between the quick-release pin at the ball bearing and the end of the quick-release pin near the ball bearing is relatively long. When applied to a spray gun, this distance protrudes from the spray gun housing, which is quite long and affects the operation of the spray gun operator, and may even cause finger injuries.

[0027] To overcome the above problems, this application shortens the length of the end of the quick release pin near the ball bearing (ball). When pressed into place, although the end of the quick release pin protrudes from the end of the sleeve, the sleeve can be pushed out by other components on the spray gun (the components have a relief groove to accommodate the end of the quick release pin). When pushed out, the component contacts the sleeve, and the protruding part of the quick release pin is located in the relief groove on other components (such as the knob). This structure can further shorten the sleeve and better avoid interference between the operator's hand and the sleeve.

[0028] This utility model also provides a spray gun, which includes any of the trigger structures described above.

[0029] Compared with the prior art, the advantages of this utility model are as follows:

[0030] 1. This trigger structure places the spring inside the sleeve, allowing the portion of the quick-release pin extending out of the trigger (gun body) to be smaller and shorter. This makes it less likely for the operator's hand to touch the quick-release pin, effectively reducing or avoiding interference.

[0031] 2. The ball end of the quick-release pin in the trigger structure extends less beyond the trigger (gun body), which does not affect operation and makes the entire trigger structure more aesthetically pleasing. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the trigger structure in Embodiment 1;

[0033] Figure 2 This is a sectional view of the trigger structure;

[0034] Figure 3 This is a schematic diagram of the trigger mechanism mounted on the gun body;

[0035] Figure 4 This is a structural schematic diagram of Embodiment 2;

[0036] Figure 5 This is a structural schematic diagram of Embodiment 3;

[0037] Figure 6 This is a structural schematic diagram of Embodiment 4;

[0038] Figure 7 This is a structural schematic diagram of Example 5;

[0039] Figure 8 This is a schematic diagram of the structure of a quick-release pin in the prior art;

[0040] Figure 9 This is a cross-sectional view of a quick-release pin in the prior art.

[0041] In the diagram: 1. Trigger, 2. Sleeve, 3. Quick release pin, 4. Spring, 5. Stop, 6. Mounting groove, 7. Ball bearing, 8. Notch, 9. Receiving groove, 10. Raised edge, 11. Pressure cap, 12. Countersunk hole, 13. Gun body, 14. Knob, 15. Relief groove, 16. Mounting part. Detailed Implementation

[0042] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0043] Example 1

[0044] like Figure 1-3 As shown, this trigger structure includes a trigger 1, a sleeve 2 passing through the trigger 1, a movable quick-release pin 3 disposed in the sleeve 2, a spring 4 sleeved on the quick-release pin 3, the spring 4 located inside the sleeve 2, a retaining flange 5 provided on one end of the sleeve 2, and a mounting groove 6 provided on the other end of the sleeve 2, in which a ball bearing 7 is disposed. When the ball bearing 7 contacts the quick-release pin 3, the ball bearing 7 protrudes from the opening of the mounting groove 6 and does not detach from the mounting groove 6. One end of the quick-release pin 3 extends from the retaining flange 5, and a notch 8 for accommodating the ball bearing 7 is provided on the other end of the quick-release pin 3. When the end of the quick-release pin 3 is pressed, the spring 4 is in a compressed state and the ball bearing 7 is opposite to the notch 8.

[0045] In use, the sleeve 2 is inserted into the gun body 13 and passes through the trigger 1. The trigger 1 is connected to the gun body 13 through the sleeve 2. When the quick release pin 3 is not pressed, the ball 7 contacts the quick release pin 3, and the quick release pin 3 pushes the ball 7 out. A part of the ball 7 protrudes from the sleeve 2. A retaining edge 5 is provided on the other side of the sleeve 2. The trigger 1 is limited between the ball 7 and the retaining edge 5 and will not fall off.

[0046] During disassembly, press the end of the quick-release pin 3 near the stop 5. The spring 4 is compressed, and the notch 8 on the quick-release pin 3 is opposite to the ball 7. If the ball 7 is above the sleeve 2, it will fall into the notch 8 under gravity, and the ball 7 will no longer obstruct the trigger 1. Press the end of the sleeve 2 where the ball 7 is located to remove the sleeve 2 from the trigger 1, and the trigger 1 will be quickly and easily removed. If the ball 7 is below or above the sleeve 2, it will not obstruct the trigger 1. When the sleeve 2 is positioned between the two sides, press the end where the ball 7 is located on the sleeve 2. The sleeve 2 moves relative to the trigger 1. When the ball 7 comes into contact with the trigger 1 (the trigger 1 has a through hole for the sleeve 2 to pass through, and the periphery of the through hole on the trigger 1 comes into contact with the ball 7), the trigger 1 pushes the ball 7 into the notch 8. The ball 7 no longer obstructs the trigger 1. Then the sleeve 2 continues to move. The sleeve 2 can also be removed from the trigger 1, and the trigger 1 can be quickly and easily removed at the same time.

[0047] After disassembly, the quick release pin 3 is released and reset under the elastic force of the spring 4. When the quick release pin 3 moves, the ball 7 disengages from the notch 8, and the quick release pin 3 pushes the ball 7 out again.

[0048] This trigger structure places the spring 4 inside the sleeve 2. After installation, the spring 4 is also located inside the gun body 13. This allows the part of the quick release pin 3 that protrudes from the trigger 1 (gun body 13) to be shorter, and the part of the sleeve 2 that protrudes from the gun body 13 to be smaller. This makes it less likely for the operator's hand to touch the quick release pin 3, effectively reducing or avoiding interference. In addition, with the spring 4 hidden inside the gun body 13 and the part of the quick release pin 3 that protrudes from the trigger 1 (gun body 13) shorter, the entire trigger structure is also more aesthetically pleasing.

[0049] Preferably, there are two mounting slots 6 arranged opposite to each other. Each mounting slot 6 is provided with a ball 7 that can protrude from the opening of the corresponding mounting slot 6 without detaching from the mounting slot 6. There are also two notches 8 arranged opposite to each other. When the end of the quick release pin 3 is pressed, the spring 4 is in a compressed state and the ball 7 is opposite to the corresponding notch 8.

[0050] When the quick release pin 3 is not pressed, the quick release pin 3 pushes out the two balls 7, and the two oppositely arranged balls 7 limit the trigger 1 to better prevent the trigger 1 from falling off.

[0051] During disassembly, press the end of the quick release pin 3 so that the notch 8 on the quick release pin 3 is aligned with the ball 7. If the ball 7 is above the sleeve 2, it will fall into the notch 8 under gravity and will no longer obstruct the trigger 1. If the ball 7 is below or between the top and bottom of the sleeve 2, press the end of the sleeve 2. The sleeve 2 will move relative to the trigger 1. When the ball 7 contacts the trigger 1 (the trigger 1 has a through hole for the sleeve 2 to pass through, and the periphery of the through hole on the trigger 1 contacts the ball 7), the trigger 1 will push the ball 7 into the notch 8, and the ball 7 will no longer obstruct the trigger 1. Then push the sleeve 2 to continue moving, remove the sleeve 2 from the trigger 1, and at the same time, quickly and easily remove the trigger 1.

[0052] As one embodiment, the width of the mounting groove 6 gradually decreases from the inside to the outside, and the diameter of the ball 7 is greater than the outer width of the mounting groove 6.

[0053] The mounting groove 6 has a structure that is larger inside and smaller outside. The diameter of the ball 7 is larger than the outer width of the mounting groove 6. When the quick release pin 3 pushes the ball 7 out, part of the ball 7 protrudes from the sleeve 2, but the ball 7 will not detach from the mounting groove 6.

[0054] like Figure 2 As shown, in this embodiment, the sleeve 2 is provided with a receiving groove 9, the spring 4 is located in the receiving groove 9, and the end of the quick release pin 3 is provided with a protrusion 10. When the end of the quick release pin 3 is pressed, the two ends of the spring 4 abut against the inner wall of the receiving groove 9 and the protrusion 10 respectively and are in a compressed state.

[0055] The receiving groove 9 is used to install the spring 4. When the end of the quick release pin 3 is pressed, the inner wall of the receiving groove 9 and the protrusion 10 press the spring 4, thereby generating elastic force in the spring 4.

[0056] Example 2

[0057] The structure and principle of this embodiment are basically the same as those of Embodiment 1, except that, as Figure 4 As shown, a pressure cap 11 is provided on the end of the quick release pin 3 near the spring 4, and the periphery of the pressure cap 11 protrudes from the periphery of the quick release pin 3.

[0058] The area of ​​the pressure cap 11 is larger than the cross-section of the quick release pin 3. By pressing the quick release pin 3 with the pressure cap 11, the pressing area is larger, and the operator's hand is less likely to be hurt.

[0059] Example 3

[0060] The structure and principle of this embodiment are basically the same as those of Embodiment 2, except that, as Figure 5As shown, in this embodiment, a countersunk hole 12 is provided on the outer side of the retaining edge 5. When the end of the quick release pin 3 is pressed and the ball 7 is opposite to the notch 8, the pressure cap 11 is embedded in the countersunk hole 12 and abuts against the inner wall of the countersunk hole 12. The pressure cap 11 is flush with the periphery of the countersunk hole 12.

[0061] After the quick release pin 3 is pressed into place, the cap 11 is embedded in the countersunk hole 12 and abuts against the inner wall of the countersunk hole 12. The cap 11 is flush with the periphery of the countersunk hole 12. The countersunk hole 12 plays a good positioning role for the cap 11. When the quick release pin 3 cannot move, it indicates that it has been pressed to the required position.

[0062] Example 4

[0063] The structure and principle of this embodiment are basically the same as those of Embodiment 3, except that, as Figure 6 As shown, in this embodiment, when one end of the quick release pin 3 is pressed and the ball 7 is opposite to the notch 8, the other end of the quick release pin 3 is flush with the end of the sleeve 2 or located inside the sleeve 2.

[0064] In existing technology, to prevent the built-in quick-release pin 3 from protruding beyond the sleeve 2, the sleeve 2 must be made longer, which affects operation and aesthetics. This embodiment, while allowing the ball bearing 7 to protrude and retract, minimizes the length of the quick-release pin 3 and sleeve 2 outside the ball bearing 7: when pressed in place, the end of the quick-release pin 3 is flush with or inside the sleeve 2, and will not protrude. During disassembly, the operator can press the sleeve 2, avoiding direct contact between the operator's hand and the end of the quick-release pin 3, reducing pain and preventing the quick-release pin 3 from being pushed back, causing the ball bearing 7 to no longer align with the notch 8 and thus pushing the ball bearing 7 out again. This structure allows for a shorter sleeve 2, preventing interference between the operator's hand and the sleeve 2, and is more aesthetically pleasing.

[0065] Example 5

[0066] The structure and principle of this embodiment are basically the same as those of Embodiment 3, except that, as Figure 7 As shown, in this embodiment, when one end of the quick release pin 3 is pressed and the ball 7 is opposite to the notch 8, the other end of the quick release pin 3 extends out from the end of the sleeve 2.

[0067] Specifically, the length of the quick-release pin 3 and sleeve 2 outside the ball bearing 7 can be about 1-2mm. When pressed into place, although the end of the quick-release pin 3 protrudes from the end of the sleeve 2, the sleeve 2 can be pushed out by other easily detachable parts on the spray gun (the parts are provided with a relief groove 15 to accommodate the end of the quick-release pin 3). When pushed out, the parts contact the sleeve 2, and the protruding part of the quick-release pin 3 is located in the relief groove 15 on other parts (such as the knob 14 or the adjusting screw of the paint needle). This structure can further shorten the sleeve 2 and better avoid interference between the operator's hand and the sleeve 2.

[0068] This utility model also provides a spray gun, which includes any of the trigger structures described above.

[0069] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A quick-release trigger structure, the trigger structure comprising a trigger (1), a sleeve (2) passing through the trigger (1), and a movable quick-release pin (3) disposed in the sleeve (2), characterized in that, A spring (4) is fitted on the quick release pin (3). The spring (4) is located inside the sleeve (2). A retaining edge (5) is provided on one end of the sleeve (2). An installation groove (6) is provided on the other end of the sleeve (2). A ball (7) is provided in the installation groove (6). When the ball (7) contacts the quick release pin (3), the ball (7) protrudes from the groove opening of the installation groove (6) and does not detach from the installation groove (6). One end of the quick release pin (3) extends out from the retaining edge (5). A notch (8) for accommodating the ball (7) is provided on the other end of the quick release pin (3). When the end of the quick release pin (3) is pressed, the spring (4) is in a compressed state and the ball (7) is opposite to the notch (8).

2. The quick-detachable trigger structure according to claim 1, characterized in that, There are two mounting slots (6) and they are arranged opposite to each other. Each mounting slot (6) is provided with a ball (7) that can protrude from the opening of the corresponding mounting slot (6) and not detach from the mounting slot (6). There are also two notches (8) and they are arranged opposite to each other. When the end of the quick release pin (3) is pressed, the spring (4) is in a compressed state and the ball (7) is opposite to the corresponding notch (8).

3. A quick-detachable trigger structure according to claim 1 or 2, characterized in that, The width of the mounting groove (6) gradually decreases from the inside to the outside, and the diameter of the ball (7) is greater than the outer width of the mounting groove (6).

4. The quick-detachable trigger structure according to claim 3, characterized in that, The sleeve (2) is provided with a receiving groove (9), the spring (4) is located in the receiving groove (9), and the end of the quick release pin (3) is provided with a protrusion (10). When the end of the quick release pin (3) is pressed, the two ends of the spring (4) abut against the inner wall of the receiving groove (9) and the protrusion (10) respectively and are in a compressed state.

5. A quick-detachable trigger structure according to claim 1 or 2, characterized in that, A pressure cap (11) is provided on the end of the quick release pin (3) near the spring (4), and the periphery of the pressure cap (11) protrudes from the circumference of the quick release pin (3).

6. The quick-detachable trigger structure according to claim 5, characterized in that, The outer side of the retaining edge (5) is provided with a countersunk hole (12). When the end of the quick release pin (3) is pressed and the ball (7) is opposite to the notch (8), the cap (11) is embedded in the countersunk hole (12) and abuts against the inner wall of the countersunk hole (12). The cap (11) is flush with the periphery of the countersunk hole (12).

7. A quick-detachable trigger structure according to claim 1 or 2, characterized in that, When one end of the quick release pin (3) is pressed and the ball (7) is opposite to the notch (8), the other end of the quick release pin (3) is flush with the end of the sleeve (2) or located inside the sleeve (2).

8. A quick-release trigger structure according to claim 1 or 2, characterized in that, When one end of the quick release pin (3) is pressed and the ball (7) is opposite to the notch (8), the other end of the quick release pin (3) extends out from the end of the sleeve (2).

9. A spray gun, characterized in that, The spray gun includes a trigger structure as described in any one of claims 1-8.

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