A non-locking nail gun lifting structure and nail gun

Abstract

The present invention solves the problem that the lifting structure of the existing nail gun needs to be provided with a firing pin locking structure, which has a complex structure; a lock-free nail gun lifting structure and a nail gun are provided, wherein the lifting structure includes a firing pin, a rotating power source and a transmission structure, wherein the rotating power source is connected to the firing pin through the transmission structure; the transmission structure includes a first transmission wheel, a second transmission wheel, a third transmission wheel and a connecting rod; the first transmission wheel is arranged at the output end of the rotating power source; the second transmission wheel is connected to the first transmission wheel for transmission; the first transmission wheel is rotatably arranged at one end of the connecting rod; the second transmission wheel is arranged at the other end of the connecting rod, and a one-way bearing is arranged between the second transmission wheel and the connecting rod, and the direction of rotation allowed by the one-way bearing is opposite to the direction of rotation output by the rotating power source; the third transmission wheel is coaxially arranged with the second transmission wheel; an engaging structure for connecting with the third transmission wheel is provided on the firing pin; the third transmission wheel engages with the engaging structure on the firing pin; the structure is simple and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of nail guns, and in particular to a non-locking nail gun lifting structure and a nail gun. Background Art

[0002] A nail gun is a finishing tool used to hammer specifically shaped nails into components to be installed. Depending on the type of power used, they are categorized as electric nail guns, pneumatic nail guns, gas nail guns, and hand nail guns. Electric and pneumatic nail guns are the two most widely used types. Pneumatic nail guns primarily use an external air pump to generate high air pressure, powering the nails within the channel. Electric nail guns primarily use a motor to control the contraction of the firing pin, compressing an energy storage component such as a spring or gas tank that works with the firing pin, and then releasing the firing pin to strike the nail. Compared to pneumatic nail guns, electric nail guns are smaller in size, more portable, and can be equipped with an independent power supply, offering a wide range of applications.

[0003] Existing electric nail guns, such as those described in US Patent Publication No. 8011547B2, utilize a latching tooth on the striker that engages with a rotating disk that engages the latching tooth to achieve reciprocation of the striker. The rotating disk has an engagement area and a release area. When the engagement area of ​​the rotating disk engages the striker, the striker retracts. When the release area of ​​the rotating disk aligns with the striker, the striker releases due to the lack of engagement. However, due to the load capacity of the rotating disk and the limited space within the chamber of the electric nail gun, the overall size of the rotating disk is relatively small. Furthermore, the required release energy requires a longer stroke for the striker to compress in order to achieve a stronger release force. Therefore, during the striker retraction process, the rotating disk requires multiple rotations of the rotating disk to complete the compression of the striker. Since the rotating disk automatically releases the striker when it reaches the release area, a locking mechanism is required to lock the striker and prevent it from automatically releasing. The locking mechanism also serves as a safety feature of the nail gun, enhancing operational safety. The locking mechanism in an electric nail gun requires a separate drive for control, resulting in a complex structure and high component costs. Therefore, a simple, lockless nail gun lifting mechanism is needed. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and provide a nail gun lifting structure without locking and a nail gun.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A lock-free nail gun lifting structure includes a firing pin, a rotating power source and a transmission structure, wherein the rotating power source is connected to the firing pin through the transmission structure; the transmission structure includes a first transmission wheel, a second transmission wheel, a third transmission wheel and a connecting rod; the first transmission wheel is arranged at the output end of the rotating power source; the second transmission wheel is connected to the first transmission wheel for transmission; the first transmission wheel is rotatably arranged at one end of the connecting rod; the second transmission wheel is arranged at the other end of the connecting rod, and a one-way bearing is arranged between the second transmission wheel and the connecting rod, and the one-way bearing allows the direction of rotation to be opposite to the direction of rotation output by the rotating power source; the third transmission wheel is coaxially arranged with the second transmission wheel; an engaging structure for connecting to the third transmission wheel is provided on the firing pin; the third transmission wheel engages with the engaging structure on the firing pin.

[0007] Furthermore, the second transmission wheel is meshedly connected with the first transmission wheel.

[0008] Furthermore, the second transmission wheel is meshedly connected with the first transmission wheel.

[0009] Furthermore, the deflection angle of the connecting rod is a set value. When the connecting rod deflects within the set value range of the deflection angle, the third transmission wheel remains engaged with the meshing structure.

[0010] Furthermore, the meshing structure is a plurality of cylindrical teeth arranged at equal intervals; the arrangement direction of the cylindrical teeth is consistent with the telescopic movement direction of the striker.

[0011] Furthermore, the engagement structure of the firing pin is a tooth row arranged in an oblong shape.

[0012] Furthermore, the first transmission wheel, the second transmission wheel and the third transmission wheel are all spur gears.

[0013] Furthermore, the rotational power source is a motor.

[0014] A nail gun includes the above-mentioned lifting structure, a shell, a cylinder and a piston; the cylinder and the lifting structure are both arranged inside the shell; the piston is arranged inside the cylinder, and the piston is also connected to one end of the firing pin in the lifting structure.

[0015] Furthermore, the nail shooting port of the nail gun housing is provided with a safety lock structure; the safety lock structure includes a trigger member, a spring and a trigger switch; the trigger member is slidably arranged near the nail shooting port on the housing; a spring is also arranged between the trigger member and the housing, and the spring is sleeved on the outside of the trigger member; the trigger switch is arranged on the sliding path of the trigger member; the trigger switch is connected to the rotational power source in the lifting structure.

[0016] Furthermore, the trigger member includes a connecting rod and an adjusting block; the connecting rod is slidably arranged in the shell, and the adjusting block is arranged at a position close to the nail shooting port of the shell; the adjusting block is sleeved on the connecting rod through a threaded structure, and the threaded structure can adjust the length of the adjusting block extending out of the nail shooting port.

[0017] The beneficial effects of the present invention are:

[0018] By setting a lifting structure including a transmission structure, the transmission structure including a first transmission wheel and a one-way bearing, etc., the contraction and release of the striker are achieved, which has a simple structure and high efficiency. In addition, the striker can be released and locked when it is contracted, thereby preventing the striker from being released due to special circumstances such as the stopping of the rotation power source, thereby improving operational safety;

[0019] By setting a safety lock structure, when the pressing piece in the nail shooting port area is not pressed and the trigger switch is not triggered, the rotation power source is kept off, thereby improving operational safety;

[0020] By setting the pressing piece including a connecting rod and an adjusting block, and cooperating with the threaded structure, the length of the adjusting block extending out of the nail shooting port is controlled, thereby adjusting the depth of the nail shot from the nail shooting port into the external component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of the nail gun of Example 1;

[0022] Figure 2 This is a schematic diagram of the safety lock structure and the interior of the nail gun in Example 1;

[0023] Figure 3 This is a schematic diagram of the lifting structure of Example 1;

[0024] Figure 4 for Figure 3 A local enlarged view of area A;

[0025] Figure 5 This is a schematic diagram of a partial transmission structure of Example 1;

[0026] Figure 6 Schematic diagram of the lifting structure movement of Example 1 Figure 1 ;

[0027] Figure 7 Schematic diagram of the lifting structure movement of Example 1 Figure 2 ;

[0028] Figure 8 Schematic diagram of the lifting structure movement of Example 1 Figure 3 ;

[0029] Figure 9 Schematic diagram of the lifting structure movement of Example 1 Figure 4 ;

[0030] Figure 10 Schematic diagram of the engagement structure on the firing pin of Example 2.

[0031] Description of the accompanying drawings: lifting structure 1, firing pin 11, meshing structure 111, rotating power source 12, transmission structure 13, first transmission wheel 131, second transmission wheel 132, third transmission wheel 133, connecting rod 134, one-way bearing 135, housing 2, nail shooting port 21, cylinder 3, piston 4, safety lock structure 5, connecting rod 51, adjustment block 52, spring 53, trigger switch 54. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the figures only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0034] Example 1:

[0035] like Figures 1 to 9 As shown, a non-locking nail gun lifting structure includes a firing pin 11, a rotating power source 12 and a transmission structure 13, wherein the rotating power source 12 is connected to the firing pin 11 through the transmission structure 13; the transmission structure 13 includes a first transmission wheel 131, a second transmission wheel 132, a third transmission wheel 133 and a connecting rod 134; the first transmission wheel 131 is arranged at the output end of the rotating power source 12, and the first transmission wheel 131 moves following the movement of the rotating power source 12; the second transmission wheel 132 is meshed and connected with the first transmission wheel 131; the first transmission wheel 133 is connected to the first transmission wheel 131 ... The wheel 131 is rotatably arranged at one end of the connecting rod 134; the second transmission wheel 132 is arranged at the other end of the connecting rod 134, and a one-way bearing 135 is arranged between the second transmission wheel 132 and the connecting rod 134. In this example, the one-way bearing 135 allows the direction of rotation to be opposite to the direction of rotation output by the rotating power source 12; the third transmission wheel 133 is coaxially arranged with the second transmission wheel 132; the striker 11 is provided with an engaging structure 111 for connecting with the third transmission wheel 133; the third transmission wheel 133 engages with the engaging structure 111 on the striker 11.

[0036] The deflection angle of the connecting rod 134 is a set value. When the connecting rod 134 deflects within the set value range of the deflection angle, the third transmission wheel 133 remains engaged with the engagement structure 111 on the striker 11 .

[0037] The striker 11 is also connected to the external piston 4 , which is located in the cylinder 3 .

[0038] The meshing structure 111 on the striker 11 is provided with gaps at both the end facing away from and the end facing toward the cylinder 3 for deflecting the third transmission wheel 133. The meshing structure 111 comprises a plurality of equally spaced cylindrical teeth; the arrangement of the cylindrical teeth aligns with the direction of the striker 11's telescopic motion. It should be noted that the line along which the cylindrical teeth are arranged passes through the central axis of the first transmission wheel 131. This ensures that the left and right yaw angles of the connecting rod 134 are consistent, enhancing the stability of the structure during operation.

[0039] The first transmission wheel 131 , the second transmission wheel 132 and the third transmission wheel 133 are all spur gears.

[0040] The rotational power source 12 is used to provide rotational kinetic energy to help the first transmission wheel 131 rotate. In this example, the rotational power source 12 is a motor.

[0041] like Figures 6-9As shown, the third transmission wheel 133 is behind the second transmission wheel 132. During implementation, assuming that the direction of the rotational kinetic energy output by the rotational power source 12 is clockwise, the allowed rotation direction of the one-way bearing 135 is counterclockwise; first, the rotational power source 12 drives the first transmission wheel 131 to rotate clockwise, and the first transmission wheel 131 drives the second transmission wheel 132 and the third transmission wheel 133 to rotate counterclockwise. Due to the action of the one-way bearing 135, the second transmission wheel 132 and the third transmission wheel 133 can rotate smoothly; at this time, the connecting rod 134 deflects to the left side of the firing pin 11, and due to the action of the third transmission wheel 133, the firing pin 11 moves toward the cylinder 3 in the nail gun, realizing the compression of the gas in the cylinder 3. It should be noted that due to the action of the one-way bearing 135, the third transmission wheel 133 is difficult to rotate clockwise, so When the third transmission wheel 133 is located on the left side of the striker 11, the striker 11 will be automatically locked, and the striker 11 will not be released even if the rotating power source 12 stops due to power failure or other reasons; until the third transmission wheel 133 moves to the end of the meshing structure 111 on the striker 11 away from the cylinder, as the third transmission wheel 133 continues to rotate, it drives the connecting rod 134 to deflect to the right side of the striker 11. At this time, due to the effect of the one-way bearing 135 combined with the air pressure in the cylinder 3, the striker 11 is released; after the striker 11 is released, the third transmission wheel 133 moves to the end of the meshing structure 111 close to the cylinder. As the third transmission wheel 133 continues to rotate, it drives the connecting rod 134 to deflect to the left side of the striker 11, and repeats the process of contraction and release of the striker 11. It should be noted that when the firing pin 11 is released, the rotating power source 12 can continue to rotate or stop rotating; if the rotating power source 12 continues to rotate, the energy of the firing pin 11 when released is increased, and the nail gun can better complete the nail shooting work; if the rotating power source 12 stops rotating, the firing pin 11 is pushed by the gas in the cylinder 3 to complete the nail shooting work.

[0042] A nail gun includes the above-mentioned lifting structure 1, and also includes a shell 2, a cylinder 3 and a piston 4; wherein the cylinder 3 and the lifting structure 1 are both arranged inside the shell 2; the piston 4 is arranged inside the cylinder 3, and the piston 4 is also connected to one end of the striker 11 in the lifting structure 1.

[0043] In order to ensure the safe operation of the nail gun, a safety lock structure 5 is also provided at the nail shooting port 21 of the nail gun housing 2; the safety lock structure 5 includes a trigger member, a spring 53 and a trigger switch 54; the trigger member is slidably arranged near the nail shooting port 21 on the housing 2. It should be noted that the nail shooting port 21 of the housing 2 is the opening for the nail gun to shoot nails. In addition, in this example, the sliding direction of the trigger member is consistent with the direction of shooting nails from the nail shooting port 21; a spring 53 is also provided between the trigger member and the housing 2, and the spring 53 is sleeved on the outside of the trigger member; the trigger switch 54 is arranged on the sliding path of the trigger member, so that the trigger member can contact the trigger switch 54 when sliding in the housing 2; the trigger switch 54 is connected to the rotating power source 12 in the lifting structure 1.

[0044] The trigger switch 54 is a contact switch or a photoelectric switch, and in this example, it is a contact switch. It should be noted that when the trigger switch 54 is not triggered, the rotation power source 12 cannot be started. Only by pressing the trigger member and activating the trigger switch 54 can the rotation power source 12 be unlocked and enabled to receive control instructions and operate.

[0045] The trigger member includes a connecting rod 51 and an adjusting block 52; the connecting rod 51 is slidably arranged in the shell 2, and the adjusting block 52 is arranged near the nail shooting port 21 of the shell 2; the adjusting block 52 is sleeved on the connecting rod 51 through a threaded structure, and the threaded structure can adjust the length of the adjusting block 52 extending out of the nail shooting port 21.

[0046] During implementation, the lifting structure 1 is provided to include a transmission structure 13, and the transmission structure 13 includes a first transmission wheel 131 and a one-way bearing 135, etc., so as to realize the contraction and release of the firing pin 11. The structure is simple and efficient, and the firing pin 11 can also be released and locked when it is contracted, thereby preventing the firing pin 11 from being released due to special circumstances such as the stopping of the rotating power source 12, thereby improving operational safety; by providing a safety lock structure 5, when the pressing member in the area of ​​the nail shooting port 21 is not pressed, resulting in the trigger switch 54 not being triggered, the rotating power source 12 is kept closed, thereby improving operational safety; by providing a pressing member including a connecting rod 51 and an adjusting block 52, in conjunction with the threaded structure, the length of the adjusting block 52 extending out of the nail shooting port 21 is controlled, thereby adjusting the depth of the nail shot from the nail shooting port 21 into the external component.

[0047] Example 2:

[0048] like Figure 10 As shown, this embodiment is obtained based on the improvement of Example 1, wherein the meshing structure 111 of the striker 11 is a tooth row arranged in an elongated circle, which is engaged with the third transmission wheel 133 through the tooth row, and the third transmission wheel 133 moves around the tooth row to realize the contraction and release of the striker 11.

[0049] The above description is merely a specific example of the present invention and does not constitute any limitation thereto. It is apparent to those skilled in the art, after understanding the content and principles of the present invention, that various modifications and alterations in form and detail may be made without departing from the principles and structure of the present invention. However, such modifications and alterations based on the concepts of the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A non-locking nail gun lifting structure, comprising a firing pin (11), a rotational power source (12) and a transmission structure (13), wherein the rotational power source (12) is connected to the firing pin (11) via the transmission structure (13); characterized in that: The transmission structure (13) includes a first transmission wheel (131), a second transmission wheel (132), a third transmission wheel (133) and a connecting rod (134); the first transmission wheel (131) is arranged at the output end of the rotating power source (12); the second transmission wheel (132) is connected to the first transmission wheel (131); the first transmission wheel (131) is rotatably arranged at one end of the connecting rod (134); the second transmission wheel (132) is arranged at the other end of the connecting rod (134); and the second transmission wheel (133) is connected to the first transmission wheel (131). A one-way bearing (135) is provided between the transmission wheel (132) and the connecting rod (134), and the one-way bearing (135) allows a rotation direction opposite to the rotation direction output by the rotation power source (12); the third transmission wheel (133) is coaxially arranged with the second transmission wheel (132); the striker (11) is provided with an engagement structure (111) for connecting with the third transmission wheel (133); the third transmission wheel (133) is engaged with the engagement structure (111) on the striker (11); The deflection angle of the connecting rod (134) is a set value, and when the connecting rod (134) deflects within the set value range of the deflection angle, the third transmission wheel (133) remains engaged with the engagement structure (111).

2. The non-locking nail gun lifting structure according to claim 1, characterized in that: The second transmission wheel (132) is meshedly connected with the first transmission wheel (131).

3. The non-locking nail gun lifting structure according to claim 1, characterized in that: The meshing structure (111) is a plurality of cylindrical teeth arranged at equal intervals; the arrangement direction of the cylindrical teeth is consistent with the telescopic movement direction of the striker (11).

4. The non-locking nail gun lifting structure according to claim 1, characterized in that: The engagement structure (111) of the striker (11) is a tooth row arranged in a long circle.

5. The non-locking nail gun lifting structure according to claim 1, characterized in that: The first transmission wheel (131), the second transmission wheel (132) and the third transmission wheel (133) are all spur gears.

6. The non-locking nail gun lifting structure according to claim 1, characterized in that: The rotational power source (12) is a motor.

7. A nail gun, characterized in that: The lifting structure (1) comprises the lifting structure (1) as claimed in any one of claims 1 to 6, and further comprises a shell (2), a cylinder (3) and a piston (4); wherein the cylinder (3) and the lifting structure (1) are both arranged inside the shell (2); the piston (4) is arranged inside the cylinder (3), and the piston (4) is also connected to one end of the striker (11) in the lifting structure (1).

8. A nail gun according to claim 7, characterized in that: The nail shooting port (21) of the nail gun housing (2) is provided with a safety lock structure (5); the safety lock structure (5) includes a trigger, a spring (53) and a trigger switch (54); the trigger is slidably arranged near the nail shooting port (21) on the housing (2); a spring (53) is further arranged between the trigger and the housing (2), and the spring (53) is sleeved on the outside of the trigger; the trigger switch (54) is arranged on the sliding path of the trigger; and the trigger switch (54) is connected to the rotation power source (12) in the lifting structure (1).

9. The nail gun according to claim 8, characterized in that: The trigger member comprises a connecting rod (51) and an adjusting block (52); the connecting rod (51) is slidably arranged in the housing (2), and the adjusting block (52) is arranged at a position close to the nail shooting opening (21) of the housing (2); the adjusting block (52) is sleeved on the connecting rod (51) through a threaded structure, and the threaded structure can adjust the length of the adjusting block (52) extending out of the nail shooting opening (21).

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