Trigger structure with gear adjustment and nail gun

Abstract

The trigger structure comprises a trigger, an adjusting wheel and an elastic piece, the trigger is provided with an adjusting wheel containing cavity, one side of the trigger is provided with a first notch communicated with the corresponding adjusting wheel containing cavity, and the other side of the trigger is provided with a second notch communicated with the adjusting wheel containing cavity. The trigger is provided with an elastic piece containing cavity communicated with the adjusting wheel containing cavity. According to the trigger structure with the gear adjusting function, the first step face and the second step face which are different in height and arranged on the adjusting wheel are matched with a trigger rotating structure, differential control over the pushing distance of the control rod is achieved on the premise that the rotating angle of the trigger every time is kept constant, and due to the fact that the heights of the step faces are different, differential control over the pushing distance of the control rod is achieved. After the trigger rotates to a fixed angle, the position of the trigger in contact with the control rod correspondingly changes, so that the displacement of the control rod is changed, and finally the purpose of switching different nailing modes of the nail gun is achieved.

Description

Technical Field

[0001] This utility model relates to a trigger structure with adjustable gears and a nail gun. Background Technology

[0002] Nail guns, widely used in furniture manufacturing, decoration, and industrial assembly, typically eject nails quickly by pulling a trigger to drive an internal control mechanism. To adapt to the varying nailing depth and force requirements of different work scenarios, existing nail guns generally feature multiple nailing modes. By limiting the trigger's rotation angle, the movement distance of the control lever is indirectly controlled, thereby adjusting the nailing effect.

[0003] In existing technologies, the above function is often achieved by setting a mechanical limiting device on the gun body to limit the trigger rotation angle. While this structure can meet the needs of adjusting the gear position to a certain extent, it still has the following drawbacks:

[0004] Because the trigger and limit device are under stress and frequent movement for a long time, their mechanical connection parts are prone to deformation or loosening, which causes the originally precise rotation angle limit to fail, thus affecting the travel accuracy of the control lever.

[0005] During multi-gear switching, the actual rotation angle of the trigger may deviate due to mechanical tolerances, long-term wear, or user operating habits, thus affecting the travel accuracy of the control lever.

[0006] Most existing solutions fail to provide a stable and repeatable gear locking mechanism, making it difficult to meet the practical application requirements of high precision and long lifespan. Utility Model Content

[0007] The primary objective of this invention is to provide a trigger structure with adjustable range for the travel accuracy of a control lever.

[0008] The second objective of this invention is to provide a nail gun with a control lever that has high stroke accuracy.

[0009] The primary objective of this invention is achieved as follows:

[0010] A trigger structure with adjustable gears includes a trigger, an adjusting wheel, and an elastic element. The trigger is provided with an adjusting wheel receiving cavity. A first notch communicating with the corresponding adjusting wheel receiving cavity is opened on one side of the trigger, and a second notch communicating with the adjusting wheel receiving cavity is opened on the other side of the trigger. The trigger is provided with an elastic element receiving cavity communicating with the adjusting wheel receiving cavity.

[0011] The surface of the adjusting wheel is a first stepped surface, and a portion of the surface of the adjusting wheel is recessed downwards to form a second stepped surface. The adjusting wheel has an opening located between the first and second stepped surfaces. The height of the first stepped surface is greater than the height of the second stepped surface. The outer wall of the adjusting wheel is spaced apart by a first slot, a second slot, and a third slot.

[0012] The adjusting wheel is rotatably mounted in the adjusting wheel receiving cavity, and part of the adjusting wheel extends out of the second notch to form a toggle part that facilitates the user to rotate the adjusting wheel;

[0013] The elastic element is placed inside the elastic element receiving cavity, and the head of the elastic element enters the outer wall of the adjusting wheel;

[0014] When the head of the elastic element enters the third slot, the elastic element locks the current rotation position of the adjusting wheel, and at the same time the first notch connects to the opening of the adjusting wheel;

[0015] When the head of the elastic element enters the first slot, the elastic element locks the current rotational position of the adjusting wheel, and at the same time the first notch connects to the first step surface of the adjusting wheel;

[0016] When the head of the elastic element enters the second slot, the elastic element locks the current rotational position of the adjusting wheel, and at the same time, the first notch connects to the second step surface of the adjusting wheel.

[0017] This invention provides a trigger structure with adjustable gears. By adjusting the first and second step surfaces of different heights on the adjustment wheel and cooperating with the trigger rotation structure, differential control of the lever push distance is achieved while maintaining a constant trigger rotation angle each time. Due to the different step surface heights, the position of the trigger in contact with the control lever changes after rotating to a fixed angle, thereby changing the displacement of the control lever and ultimately achieving the purpose of switching different nailing modes of the nail gun.

[0018] Compared to the traditional method of switching modes by changing the trigger rotation angle, this design effectively avoids the problem of lever misalignment caused by the deformation of the trigger or limit device after long-term use, which leads to rotation angle errors. This significantly improves the stability and accuracy of nailing mode switching and reduces the risk of misoperation.

[0019] In addition, the combination of the elastic element and the multiple sets of slots on the outer wall of the adjusting wheel forms a clear gear positioning structure. Users can easily and accurately switch gears by moving the adjusting wheel and keep the trigger rotation position consistent in each use, which further improves the consistency, safety and reliability of nailing operations and has good practicality and promotion value.

[0020] The primary objective of this utility model can also be achieved by the following technical measures:

[0021] Furthermore, it also includes a central shaft, a central channel is opened at the center position of the adjusting wheel, a central hole is opened at the corresponding position of the central channel in the adjusting wheel accommodating cavity, the central shaft passes through the central channel, the end of the central shaft is inserted into the corresponding central hole, and the adjusting wheel rotates around the central shaft as the rotation center.

[0022] By setting a central channel at the center of the adjusting wheel, and cooperating with setting a central shaft and a central hole on the adjusting wheel's accommodating cavity, the adjusting wheel can rotate stably around the central shaft as its rotation axis, significantly improving the concentricity and stability of the adjusting wheel during rotation and avoiding problems such as shaking and skewness.

[0023] Furthermore, the bottom wall of the adjusting wheel accommodating cavity is provided with a limiting post, and the bottom wall of the adjusting wheel has a limiting groove with a communicating opening. The limiting post is inserted into the limiting groove, and the limiting post and the opening together limit the movement range of the limiting post, thereby limiting the rotation angle of the adjusting wheel.

[0024] By setting a limiting post at the bottom of the adjusting wheel accommodating cavity and setting a limiting groove at the bottom of the adjusting wheel that communicates with the opening, the limiting post can be inserted into the limiting groove, thereby limiting the rotation range of the adjusting wheel and preventing it from exceeding the predetermined rotation angle.

[0025] This structure effectively controls the maximum rotation range of the adjustment wheel, ensuring that users can only switch between the designed gears, preventing accidental rotation to non-functional areas, and improving the reliability and safety of gear adjustment.

[0026] Meanwhile, the matching structure between the limiting post and the limiting groove is simple, easy to manufacture, and occupies little space, enabling precise control of the rotation angle of the adjusting wheel without increasing the complexity of the structure.

[0027] Furthermore, the elastic element includes a backstop plate and a spring-loaded positioning glass bead. The trigger has an opening corresponding to the elastic element receiving cavity. The spring-loaded positioning glass bead is placed inside the elastic element receiving cavity. The backstop plate passes through the opening and is placed inside the elastic element receiving cavity. The head of the spring-loaded positioning glass bead extends into the adjusting wheel receiving cavity, and the tail of the spring-loaded positioning glass bead abuts against the backstop plate.

[0028] By introducing an elastic structure that combines a backstop plate with a spring-loaded positioning glass bead, the spring-loaded glass bead is reliably positioned in different slots on the outer wall of the adjusting wheel under elastic action, thus achieving a stable gear locking function.

[0029] The anti-reverse plate is designed with a socket for easy installation and maintenance, while providing continuous elastic support to ensure that the glass beads maintain sufficient positioning accuracy and elastic recovery ability during long-term use, preventing failure or detachment.

[0030] The second objective of this utility model is achieved as follows:

[0031] A nail gun includes a gun body and a control lever for adjusting the nailing mode. The gun body is provided with a sliding channel, and the control lever is slidably disposed in the sliding channel, with one end of the control lever extending out of the sliding channel.

[0032] The trigger is rotatably mounted on the gun body, and the control lever faces the first notch. Rotating the trigger pushes the control lever to move and controls the distance the control lever moves.

[0033] This invention features a trigger mounted rotatably on the gun body. Rotating the trigger directly moves a control lever along a predetermined path within a sliding channel, thereby adjusting the nail-driving mode. This design is simple, with a clear transmission path, improving the stability and control precision of the mechanism's response.

[0034] Combining the gear adjustment design in the aforementioned trigger structure, the movement distance of the control lever is determined by the height of the step surface where the trigger is located. Thus, under the premise of a fixed trigger rotation angle, the control lever can be precisely controlled by adjusting the step surface, thereby enabling the switching of nail gun nailing force or mode and improving the diversity and accuracy of nailing effect.

[0035] This structure overcomes the angle error problem of traditional methods that rely on trigger rotation angle to adjust nailing strength, ensuring consistent and reliable nailing action each time. It effectively avoids the safety hazard of switching nailing modes due to misoperation, and has good practicality and user-friendliness.

[0036] The second objective of this utility model can also be achieved by the following technical measures:

[0037] Furthermore, it also includes a spring, the trigger having a spring receiving cavity, the spring being placed inside the spring receiving cavity, one end of the spring abutting against the inner wall of the spring receiving cavity, and the other end of the spring abutting against the gun body, the spring constituting the trigger's reset mechanism.

[0038] By setting a spring receiving cavity on the trigger and configuring a spring-formed reset mechanism, the trigger can be automatically reset to the initial position by the spring force each time the user releases the trigger, ensuring that the trigger is always in a ready state, thus improving operating efficiency and convenience.

[0039] In addition, the reset mechanism provides a stable rebound force, which enables the trigger to maintain sensitive and reliable response characteristics even under high-frequency use, making it particularly suitable for operation scenarios with high requirements for nailing frequency and efficiency.

[0040] The beneficial effects of this utility model are as follows:

[0041] This invention, by setting adjustable wheels with multiple step heights and cooperating with the stroke control of the control lever, allows the movement distance of the control lever to be precisely controlled by switching between different gears while keeping the trigger rotation angle fixed. This enables the nail gun to accurately switch between standby, first nailing mode, and second nailing mode, meeting the nailing needs of multiple scenarios.

[0042] This invention utilizes a combination of elastic positioning glass beads and multiple sets of slots to achieve stable locking of the adjustment wheel's rotational position, preventing accidental gear shifting due to vibration or accidental activation. Furthermore, in the standby position, even if the trigger is pulled, the control lever will not move, preventing accidental engagement and improving operational safety.

[0043] In this invention, the bottom of the adjusting wheel is provided with a limiting groove and used in conjunction with a limiting post, which can effectively limit the rotation range of the adjusting wheel, prevent the adjusting wheel from rotating beyond the angle and causing positioning misalignment, and ensure the repeatability accuracy and long-term stability of switching between each gear. Attached Figure Description

[0044] Figure 1 This is a diagram of a nail gun.

[0045] Figure 2 This is a schematic diagram of a trigger mechanism with adjustable positions.

[0046] Figure 3 for Figure 2 Assembly drawing.

[0047] Figure 4 This is a schematic diagram of a trigger mechanism with adjustable positions (standby position).

[0048] Figure 5 for Figure 4 KK sectional view.

[0049] Figure 6 for Figure 4 Another sectional view of KK from another angle.

[0050] Figure 7 This is a schematic diagram of a trigger mechanism with adjustable gears (first gear).

[0051] Figure 8 for Figure 4 KK sectional view.

[0052] Figure 9 for Figure 4 Another sectional view of KK from another angle.

[0053] Figure 10 This is a schematic diagram of a trigger mechanism with adjustable gears (second gear).

[0054] Figure 11 for Figure 4 KK sectional view.

[0055] Figure 12 for Figure 4 Another sectional view of KK from another angle.

[0056] Figure 13 This is a schematic diagram of the trigger.

[0057] Figure 14 This is a schematic diagram of the trigger from another angle.

[0058] Figure 15 for Figure 14 DD sectional view.

[0059] Figure 16 This is a schematic diagram of the adjusting wheel.

[0060] Figure 17 This is a top view of the adjusting wheel.

[0061] Figure 18 This is a schematic diagram showing another angle of the adjusting wheel.

[0062] Figure 19 This is a bottom view of the adjusting wheel. Detailed Implementation

[0063] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0064] Implementation examples, in conjunction with Figures 1 to 19 As shown, a trigger structure with gear adjustment includes a trigger 1, an adjustment wheel 2, and an elastic element 3. The trigger 1 is provided with an adjustment wheel receiving cavity 4. A first notch 5 is opened on one side of the trigger 1 to communicate with the corresponding adjustment wheel receiving cavity 4. A second notch 6 is opened on the other side of the trigger 1 to communicate with the adjustment wheel receiving cavity 4. The trigger 1 is provided with an elastic element receiving cavity 7 to communicate with the adjustment wheel receiving cavity 4.

[0065] The surface of the adjusting wheel 2 is a first stepped surface 21, and a portion of the surface of the adjusting wheel 2 is recessed downward to form a second stepped surface 22. The adjusting wheel 2 has an opening 23, which is located between the first stepped surface 21 and the second stepped surface 22. The height of the first stepped surface 21 is greater than the height of the second stepped surface 22. The outer wall of the adjusting wheel 2 is spaced apart by a first slot 201, a second slot 202, and a third slot 203.

[0066] The adjusting wheel 2 is rotatably disposed in the adjusting wheel receiving cavity 4, and part of the adjusting wheel 2 extends out of the second notch 6 to form a toggle part 24 that facilitates the user to rotate the adjusting wheel 2;

[0067] The elastic element 3 is placed inside the elastic element receiving cavity 7, and the head of the elastic element 3 enters the outer wall of the adjusting wheel 2.

[0068] When the head of the elastic element 3 enters the third slot 203, the elastic element 3 locks the current rotation position of the adjusting wheel 2, and at the same time the first notch 5 connects to the opening 23 of the adjusting wheel 2.

[0069] When the head of the elastic element 3 enters the first slot 201, the elastic element 3 locks the current rotation position of the adjusting wheel 2, and at the same time the first notch 5 connects to the first step surface 21 of the adjusting wheel 2;

[0070] When the head of the elastic element 3 enters the second slot 202, the elastic element 3 locks the current rotation position of the adjusting wheel 2, and at the same time the first notch 5 connects to the second step surface 22 of the adjusting wheel 2.

[0071] Furthermore, it also includes a central shaft 8, a central channel 25 is opened at the center position of the adjusting wheel 2, a central hole 81 is opened at the corresponding position of the central channel 25 in the adjusting wheel accommodating cavity 4, the central shaft 8 passes through the central channel 25, and the end of the central shaft 8 is inserted into the corresponding central hole 81, and the adjusting wheel 2 rotates with the central shaft 8 as the rotation center.

[0072] Furthermore, the bottom wall of the adjusting wheel accommodating cavity 4 is provided with a limiting post 9, and the bottom wall of the adjusting wheel 2 is provided with a limiting groove 26 that communicates with the opening 23. The limiting post 9 is inserted into the limiting groove 26, and the limiting post 9 and the opening 23 together limit the movement range of the limiting post 9, thereby limiting the rotation angle of the adjusting wheel 2.

[0073] Furthermore, the elastic element 3 includes a backstop plate 31 and a spring-loaded positioning glass bead 32. The trigger 1 has an insertion port 71 corresponding to the elastic element receiving cavity 7. The spring-loaded positioning glass bead 32 is placed inside the elastic element receiving cavity 7. The backstop plate 31 passes through the insertion port 71 and is placed inside the elastic element receiving cavity 7. The head of the spring-loaded positioning glass bead 32 extends into the adjusting wheel receiving cavity 4, and the tail of the spring-loaded positioning glass bead 32 abuts against the backstop plate 31.

[0074] A nail gun includes a gun body 100 and a control lever 10 for adjusting the nailing mode. The gun body 100 is provided with a sliding channel, and the control lever 10 is slidably disposed in the sliding channel, with one end of the control lever 10 extending out of the sliding channel.

[0075] The trigger 1 is rotatably mounted on the gun body 100, and the control lever 10 faces the first notch 5. The rotation of the trigger 1 pushes the control lever 10 to move and controls the distance the control lever 10 moves.

[0076] Furthermore, it also includes a spring 200. The trigger 1 has a spring receiving cavity 300. The spring 200 is placed inside the spring receiving cavity 300. One end of the spring 200 abuts against the inner wall of the spring receiving cavity 300, and the other end of the spring 200 abuts against the gun body 100. The spring 200 constitutes the reset mechanism of the trigger 1.

[0077] How to switch standby modes:

[0078] The user rotates the adjusting wheel 2 by moving the actuating part 24 until the third slot 203 aligns with the spring-loaded positioning glass bead 32. Under the action of the spring, the head of the glass bead accurately embeds into the third slot 203, achieving a stable lock on the current position of the adjusting wheel 2. At this time, the first notch 5 of the trigger 1 connects with the opening 23 on the adjusting wheel 2. The control lever 10 can pass through the opening 23 but will not contact the step surface, thus preventing displacement. Even if the user rotates the trigger 1, the control lever 10 will not move, and the nail gun is in a non-working state, completing the standby mode setting.

[0079] First gear shifting method:

[0080] The user continues to rotate the adjustment wheel 2 to the first slot 201 position. The head of the elastic positioning glass bead 32 is inserted into the first slot 201 under the action of elasticity, and the adjustment wheel 2 is locked in the first position. At this time, the first notch 5 of the trigger 1 connects to the first stepped surface 21 on the adjustment wheel 2. When the user rotates the trigger 1, the control lever 10 passes through the first notch 5 and contacts the first stepped surface 21, and is pushed to the first position, thereby driving the nail gun to perform the first nailing mode.

[0081] Meanwhile, to prevent the adjusting wheel 2 from rotating beyond the designed angle range, the inner wall of the opening 23 of the adjusting wheel 2 abuts against the limiting post 9 in the trigger 1, forming a rotation endpoint limit, effectively preventing the adjusting wheel 2 from continuing to rotate beyond the set angle range.

[0082] How to switch to the second gear:

[0083] The user moves the adjusting wheel 2 again, rotating it to the second slot 202 position. The head of the elastic positioning glass bead 32 automatically locks into the second slot 202, and the adjusting wheel 2 is fixed in the second position. At this time, the first notch 5 of the trigger 1 connects to the second stepped surface 22 of the adjusting wheel 2. After the user rotates the trigger 1, the control lever 10 contacts the second stepped surface 22 through the first notch 5 and is pushed to the second position, thereby driving the nail gun to execute the second nailing mode.

[0084] In this state, the end of the limiting groove 26 at the bottom of the adjusting wheel 2 abuts against the limiting post 9, forming a rotation endpoint limit, effectively preventing the adjusting wheel 2 from continuing to rotate beyond the set angle range.

Claims

1. A trigger structure with adjustable positions, comprising a trigger, an adjusting wheel, and an elastic element, characterized in that: The trigger is provided with an adjusting wheel receiving cavity, a first notch is opened on one side of the trigger to connect to the corresponding adjusting wheel receiving cavity, a second notch is opened on the other side of the trigger to connect to the adjusting wheel receiving cavity, and the trigger is provided with an elastic element receiving cavity to connect to the adjusting wheel receiving cavity; The surface of the adjusting wheel is a first stepped surface, and a portion of the surface of the adjusting wheel is recessed downwards to form a second stepped surface. The adjusting wheel has an opening located between the first and second stepped surfaces. The height of the first stepped surface is greater than the height of the second stepped surface. The outer wall of the adjusting wheel is spaced apart by a first slot, a second slot, and a third slot. The adjusting wheel is rotatably mounted in the adjusting wheel receiving cavity, and part of the adjusting wheel extends out of the second notch to form a toggle part that facilitates the user to rotate the adjusting wheel; The elastic element is placed inside the elastic element receiving cavity, and the head of the elastic element enters the outer wall of the adjusting wheel; When the head of the elastic element enters the third slot, the elastic element locks the current rotation position of the adjusting wheel, and at the same time the first notch connects to the opening of the adjusting wheel; When the head of the elastic element enters the first slot, the elastic element locks the current rotational position of the adjusting wheel, and at the same time the first notch connects to the first step surface of the adjusting wheel; When the head of the elastic element enters the second slot, the elastic element locks the current rotational position of the adjusting wheel, and at the same time, the first notch connects to the second step surface of the adjusting wheel.

2. The trigger structure with adjustable gear position according to claim 1, characterized in that: It also includes a central shaft, a central channel is opened at the center of the adjusting wheel, a central hole is opened at the corresponding position of the central channel in the adjusting wheel accommodating cavity, the central shaft passes through the central channel, and the end of the central shaft is inserted into the corresponding central hole, and the adjusting wheel rotates around the central shaft as the center of rotation.

3. The trigger structure with adjustable gear position according to claim 1, characterized in that: The bottom wall of the adjusting wheel accommodating cavity is provided with a limiting post, and the bottom wall of the adjusting wheel has a limiting groove with a communicating opening. The limiting post is inserted into the limiting groove, and the limiting post and the opening together limit the movement range of the limiting post, thereby limiting the rotation angle of the adjusting wheel.

4. The trigger structure with adjustable gear position according to claim 1, characterized in that: The elastic element includes a backstop plate and a spring-loaded positioning glass bead. The trigger has an opening in the cavity corresponding to the elastic element. The spring-loaded positioning glass bead is placed in the cavity of the elastic element. The backstop plate passes through the opening and is placed in the cavity of the elastic element. The head of the spring-loaded positioning glass bead extends into the cavity of the adjusting wheel, and the tail of the spring-loaded positioning glass bead abuts against the backstop plate.

5. A nail gun employing the trigger structure as described in any one of claims 1-4, characterized in that: It includes a gun body and a control lever for adjusting the nail-driving method. The gun body is provided with a sliding channel, and the control lever is slidably disposed in the sliding channel, with one end of the control lever extending out of the sliding channel. The trigger is rotatably mounted on the gun body, and the control lever faces the first notch. Rotating the trigger pushes the control lever to move and controls the distance the control lever moves.

6. The nail gun according to claim 5, characterized in that: It also includes a spring, the trigger has a spring receiving cavity, the spring is placed in the spring receiving cavity, one end of the spring abuts against the inner wall of the spring receiving cavity, and the other end of the spring abuts against the gun body, the spring constitutes the trigger reset mechanism.

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