Improved structure for separating metal bumper from trigger lock rod

Abstract

The utility model discloses an improved structure for separating a metal bumper from a trigger lock rod, which relates to the field of electric nail guns, and comprises a safety component, the safety component comprises a bumper and a safety switch, the rear end of the bumper is connected with a trigger rod and a spring mounting rod through a connecting rod, and the front end of the bumper is used for extending out of a gun nozzle and abutting against a nailing surface; the trigger locking rod is mounted in the nail gun shell in a relatively sliding manner; the trigger assembly comprises a trigger, the trigger is rotationally connected to the nail gun shell, and a first contact is arranged on the trigger and used for making contact with or being separated from a lock head of a trigger lock rod; when the front end of the safety rod abuts against the nailing surface, the safety rod retracts into the nail gun shell, the trigger rod is driven to make upward contact with a contact piece of the safety switch, and the safety switch is powered on. When the front end of the safety rod is separated from the nailing surface, the safety rod is reset downwards to drive the trigger rod to be separated from the contact, and the safety switch is powered off. The safety rod and the trigger locking rod are not fixedly connected any more, it is guaranteed that nailing cannot be conducted when the nail gun is lifted, and safety in the using process is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric nail guns, specifically to an improved structure that separates the metal safety bar from the trigger lock bar. Background Technology

[0002] A nail gun, also known as a nailing gun or nail gun, is a modern fastening technology product that fires nails. It utilizes direct fastening technology and has become an essential hand tool in woodworking and construction. Nail guns are typically powered by electricity or pneumatics. Existing nail guns often include a safety lever (assembly) to ensure safety during nailing. However, current safety levers are generally fixedly connected to the trigger lock lever. When the nail gun is raised and in mid-air, the safety lever, no longer pressed against the wood, is spring-loaded and returns to its original position. During this return process, interference between the trigger lock lever and the trigger causes the safety lever to stop after returning to a 3-4mm travel position. At this point, the safety lever tip still presses against the microswitch contact, keeping the microswitch energized. If the trigger is pulled further, it will activate the trigger switch, allowing the nail gun to fire. However, since the nail gun is suspended in mid-air during this operation, there is a safety hazard of injury. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an improved structure that separates the metal safety bar from the trigger lock bar. The safety bar and the trigger lock bar are no longer fixedly connected, ensuring that the nail gun cannot be used when it is lifted, thus improving safety during use.

[0004] The purpose of this utility model is achieved through the following technical solution: This improved structure for separating the metal safety bar from the trigger lock lever is installed inside the nail gun housing. The front of the nail gun housing is provided with a nozzle, and a power assembly is installed inside the nail gun housing. The improved structure for separating the metal safety bar from the trigger lock lever includes:

[0005] The safety assembly includes a safety lever and a safety switch. The rear end of the safety lever is connected to a trigger lever and a spring mounting lever via a connecting rod. The spring mounting lever engages with the nail gun housing via a reset spring, allowing the safety lever to slide up and down along the nail gun housing. The front end of the safety lever is used to extend the nozzle and press against the nailing surface.

[0006] The trigger lever is slidably mounted within the nail gun housing; and

[0007] A trigger assembly includes a trigger rotatably connected to a nail gun housing, and a first contact on the trigger for engaging or disengaging a lock head on the trigger lever;

[0008] When the front end of the safety bar rests against the nailing surface, it retracts into the nail gun housing, causing the trigger rod to move upward and contact the contact plate of the safety switch, thus energizing the safety switch. When the front end of the safety bar disengages from the nailing surface, it returns to its original position downward, causing the trigger rod to disengage from the contact plate, thus de-energizing the safety switch.

[0009] As a further technical solution, the trigger assembly also includes a trigger switch for controlling the power supply to the power assembly. A rotating linkage is rotatably mounted on the trigger, with one end of the rotating linkage serving as a second contact and the other end serving as a third contact. A power linkage is provided between the third contact and the power assembly. The second contact is used to contact or disengage the trigger switch, and the third contact is used to contact or disengage the power linkage.

[0010] As a further technical solution, a limit block is provided at the lower end of the trigger lock lever to limit the upward movement of the safety bar.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The trigger lock lever and the safety lever are independent and not fixedly connected. When the machine is pressed against the nailing surface, the safety lever is compressed and triggers the safety switch. In this ready state, pull the trigger halfway, but not all the way, so that the trigger and trigger switch are in the state of about to be triggered. At this time, lift the machine. After the nail gun lifts the safety lever, the safety lever can be reset independently. When the trigger lock lever interferes with the trigger, the safety switch remains open. Even if the trigger is pulled, no nail will be ejected, ensuring the safety of the nail gun.

[0013] 2. After the second contact triggers the trigger switch, the third contact is lifted as the power unit moves, causing the second contact to disengage from the trigger switch, facilitating the next nailing cycle and ensuring a stable and efficient nailing process.

[0014] 3. A limit block is added to the trigger lock lever to restrict the upward movement of the safety lever and prevent the safety lever from retracting excessively into the nail gun. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model after being assembled with a nail gun.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model in the nailed state (safety bar retracted) when the trigger is not pulled.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model when the trigger is pulled in the nailed state (safety bar retracted).

[0018] Figure 4 This is a schematic diagram of the structure of this utility model when the trigger is not pulled in the raised state (safety bar extended).

[0019] Figure 5 This is a schematic diagram of the structure of this utility model when the trigger is pulled in the raised state (with the safety bar extended).

[0020] Figure 6 This is a schematic diagram of the installation structure of the safety component and the trigger lock lever in this utility model.

[0021] Figure 7 This is a schematic diagram of the rotating connecting rod (second contact point and third contact point) in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Nail gun housing; 2. Trigger assembly; 21. Trigger; 22. First contact; 23. Second contact; 24. Third contact; 25. Trigger switch; 3. Safety assembly; 31. Safety lever; 32. Linkage rod; 33. Trigger rod; 34. Spring mounting rod; 35. Safety switch; 36. Contact piece; 4. Trigger locking lever; 41. Lock head; 42. Limit block; 5. Power linkage; 6. Power assembly; 61. Cam; 62. Brake switch; 7. Nozzle; 8. Return spring. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings:

[0024] Example: As attached Figures 1-7 As shown, this improved structure, which separates the metal safety bar from the trigger lock bar, includes a nail gun housing 1, a trigger assembly 2, a trigger 21, a first contact 22, a second contact 23, a third contact 24, a trigger switch 25, a safety assembly 3, a safety bar 31, a connecting rod 32, a trigger lever 33, a spring mounting lever 34, a safety switch 35, a contact piece 36, a trigger lock bar 4, a lock head 41, a limit block 42, a power connecting rod 5, a power assembly 6, a cam 61, a brake switch 62, a nozzle 7, and a return spring 8.

[0025] Reference Appendix Figure 1 The improved structure that separates the metal safety bar from the trigger lock bar is installed inside the nail gun housing 1. The front of the nail gun housing 1 is provided with a nozzle 7, and a power assembly 6 is installed inside the nail gun housing 1 to provide nailing power.

[0026] like Figure 6 As shown, the safety assembly 3 includes a safety lever 31 and a safety switch 35. A connecting rod 32 is integrally mounted at the rear end of the safety lever 31. A trigger rod 33 and a spring mounting rod 34 are integrally connected to the connecting rod 32. The spring mounting rod 34 engages with the nail gun housing 1 via a reset spring 8, allowing the safety lever 31 to slide up and down along the nail gun housing 1. The front end of the safety lever 31 extends beyond the nozzle 7 and rests against the nailing surface. A trigger lock rod 4 is slidably mounted within the nail gun housing 1. Preferably, a limiting block 42 is provided at the lower end of the trigger lock rod 4. The limiting block 42 can block the connecting rod 32, thereby limiting the upward movement of the safety lever 31.

[0027] like Figures 2-5 As shown, the trigger assembly 2 includes a trigger 21 and a trigger switch 25. The trigger 21 is rotatably connected to the nail gun housing 1. A first contact 22 is provided on the trigger 21, which can contact or disengage from the locking head 41 of the trigger lever 4. Figure 2 , 3 As shown, when the front end of the safety lever 31 abuts against the nailing surface, it retracts into the nail gun housing 1, causing the trigger lever 33 to move upward and contact the contact piece 36 of the safety switch 35, thus energizing the safety switch 35. Figure 4 , 5 As shown, when the front end of the safety bar 31 disengages from the nailing surface, it resets downwards, causing the trigger rod 33 to disengage from the contact piece 36, thus de-energizing the safety switch 35.

[0028] Furthermore, the trigger switch 25 can control the power supply to and from the power assembly 6, and a rotating linkage is mounted on the trigger 21, such as... Figure 7 As shown, one end of the rotating linkage serves as the second contact 23, and the other end serves as the third contact 24. A power linkage 5 is provided between the third contact 24 and the power assembly 6. The second contact 23 can contact or disengage from the trigger switch 25, and the third contact 24 can contact or disengage from the power linkage 5.

[0029] The working process of this utility model:

[0030] When trigger 21 is pulled, if Figure 3 As shown, the rotating linkage moves synchronously with the trigger 21, causing the second contact 23 to first contact the trigger switch 25. The trigger switch 25 is energized, controlling the power assembly 6 to drive the nail. During the nailing process, the power assembly 6 drives the power linkage 5 upward through the cam 61. When the power linkage 5 moves upward, it first contacts the contact of the brake switch 62, energizing the brake switch 62. The power linkage 5 continues to move upward until it contacts the third contact 24. The rotating linkage then begins to rotate, causing the second contact 23 to gradually disengage from the trigger switch 25. At this time, the trigger switch 25 is de-energized. Since the power linkage 5 remains in contact with the brake switch 62, the power assembly 6 is not de-energized. The power assembly 6 drives the cam 61 to continue rotating until the cam 61 disengages from the power linkage 5 (the power linkage 5 slides into the V-groove of the cam 61). At this point, the brake switch 62 contacts disengage from the power linkage 5, the power assembly 6 (brake switch 62) is de-energized and stops working, the entire machine is de-energized, and the power linkage 5 is reset downwards and disengaged from the third contact 24 under the action of the spring, waiting for the next nailing cycle.

[0031] When the nail gun is lifted, the metal safety bar 31 returns to its original position. Figure 4As shown, because the safety lever 31 and the trigger lock lever 4 are not fixedly connected, when the trigger lock lever 4 interferes with the trigger 21 during reset and cannot return to its original position, the metal safety lever 31 can return to its original position. When the metal safety lever 31 returns to its original position, the trigger lever 33 on the safety lever 31 will disengage from the contact piece 36 of the safety switch 35, and the safety switch 35 will be de-energized. Since the trigger lock lever 4 is separated from the safety lever 31, after the trigger 21 continues to pull the trigger switch 25 (e.g., Figure 5 As shown in the diagram, because the safety switch 35 is de-energized, nailing cannot be performed in this state, ensuring the safety of the workers.

[0032] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. An improved structure for separating the metal safety bar and trigger lock bar, installed inside a nail gun housing (1), wherein the front of the nail gun housing (1) is provided with a nozzle (7), and a power assembly (6) is provided inside the nail gun housing (1), characterized in that, include: The safety assembly (3) includes a safety rod (31) and a safety switch (35). The rear end of the safety rod (31) is connected to a trigger rod (33) and a spring mounting rod (34) via a connecting rod (32). The spring mounting rod (34) cooperates with the nail gun housing (1) by sleeved with a reset spring (8), so that the safety rod (31) slides up and down along the nail gun housing (1). The front end of the safety rod (31) is used to extend the nozzle (7) and abut against the nailing surface. The trigger lever (4) is slidably mounted inside the nail gun housing (1); as well as The trigger assembly (2) includes a trigger (21) which is rotatably connected to the nail gun housing (1). A first contact (22) is provided on the trigger (21) for contacting or disengaging the lock head (41) of the trigger lock lever (4). When the front end of the safety bar (31) abuts against the nailing surface, it retracts into the nail gun housing (1), causing the trigger rod (33) to contact the contact piece (36) of the safety switch (35) upward, thus energizing the safety switch (35); when the front end of the safety bar (31) disengages from the nailing surface, it resets downward, causing the trigger rod (33) to disengage from the contact piece (36), thus de-energizing the safety switch (35).

2. The improved structure for separating the metal safety bar and trigger lock bar according to claim 1, characterized in that: The trigger assembly (2) also includes a trigger switch (25) for controlling the power assembly (6) to be powered on and off. A rotating link is rotatably mounted on the trigger (21). One end of the rotating link serves as a second contact (23), and the other end serves as a third contact (24). A power link (5) is provided between the third contact (24) and the power assembly (6). The second contact (23) is used to contact or disengage the trigger switch (25), and the third contact (24) is used to contact or disengage the power link (5).

3. The improved structure for separating the metal safety bar and trigger lock bar according to claim 1, characterized in that: The lower end of the trigger lock bar (4) is provided with a limiting block (42) to limit the upward movement of the safety bar (31).

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