Nail magazine device, driving device, gun needle lifting mechanism and nail gun

Abstract

A nail magazine device (700), a driving device (20) and a gun needle lifting mechanism (10). The nail magazine device (700) comprises a side wall (400), a movable member (200) and a cover (300), wherein the cover (300) is disposed on the side wall (400), with an inner space formed between the cover (300) and the side wall (400), the movable member (200) being located in the inner space; a first side face of the movable member (200) is arranged towards the side wall (400), and a second side face of the movable member (200) is arranged towards the cover (300); an inner space between the movable member (200) and the cover (300) forms a nail chamber (100) for accommodating a gun nail (800); the cover (300) is configured to open or close relative to the side wall (400) thus opening or closing the nail chamber (100); and the movable member (200) is configured to adjust the width of the nail chamber (100). By means of the nail magazine device (700), the width of the nail chamber (100) is adapted to the storage of gun nails (800) of different specifications, preventing nail jamming and overlapping. The driving device (20) enables the same electric motor (210) to supply power to a lifting wheel (120) and a flywheel (240), such that the configuration space is saved; in addition, inflation and nailing operate in separate time periods, thereby reducing the load on the electric motor (210). The gun needle lifting mechanism (10) can maintain precise cooperation between the lifting wheel (120) and a gun needle (110).

Description

Nail magazine device, driving device, gun needle lifting mechanism and nail gun Technical Field

[0001] The present application relates to the technical field of nailing tools, and in particular to a nail magazine device, a driving device, a gun needle lifting mechanism and a nail gun. Background Art

[0002] Nails used in nail guns come in different sizes. For example, one type is 18Ga (cross-section 1.05mm x 1.25mm), known as a light-duty nail, with a length of 10-50mm; the other is 16Ga (cross-section 1.4mm x 1.6mm), known as a heavy-duty nail, with a length of 25-64mm. Because there is no universal magazine, two specialized products (PT18G and PT16G) have emerged to handle nails of different sizes.

[0003] Because the two types of nails differ in size, using them together in the same magazine will inevitably lead to jamming and overlapping nails. Chinese invention patent application publication number CN101664916A discloses a three-in-one nail gun magazine device that can accommodate the two types of nails mentioned above and another type of stacking nails. The device separates the two types of straight nails into two different nail feed slots, resulting in a complex structure and frequent jamming of light-weight straight nails mixed in heavy-weight straight nail slots.

[0004] There are two types of nail guns on the market that are used to drive nails into wooden boards, walls, etc.: pneumatic nail guns and electric nail guns.

[0005] Pneumatic nail guns require an air compressor and a bulky air tank. These are connected to the tank via an air hose. The compressed air from the tank drives the piston and the firing pin to drive and reset the nail. Each nailing operation consumes compressed air. Therefore, when the compressed air in the tank decreases, causing the pressure to drop, the air compressor must be activated to inflate the tank. This type of pneumatic nail gun, due to its need for an air compressor and tank, is difficult to move, and the air hose can be a hindrance during use.

[0006] Electric nail guns are powered by a gas spring. During nailing, the motor relies on electricity (such as a replaceable battery) to drive the needle lift mechanism, which raises the needle (striker) and compresses the gas spring. The needle lift mechanism raises the needle to a preset position and then releases it. The needle then uses the force of the gas spring to drive the nail. As the motor continues to rotate, the needle is gradually raised and nailed. During nailing, the compressed air in the gas spring is not consumed; it only compresses and expands.

[0007] In the prior art, a gas spring in an electric nail gun permanently seals a gas (such as an inert gas like nitrogen). When the nail gun is not in operation (such as during storage or transportation), the compressed gas in the gas spring still maintains a high pressure, which poses a hidden danger and can also cause fatigue of the sealing structure, shortening the life of the gas spring.

[0008] By inflating the sealed chamber when the electric nail gun is in use and releasing the compressed gas in the gas spring when the nail gun is not in use (such as for storage or transportation), the drawback of the gas spring permanently sealing the gas can be overcome. This technically conceived electric nail gun requires an air pump driven by a motor. Therefore, implementing this electric nail gun requires addressing technical issues such as how to rationally configure the structure to make it compact and not excessively bulky, further reducing manufacturing costs, and properly arranging the product's quality center for ease of handling.

[0009] This type of nail gun requires precise alignment between the needle lifting mechanism and the needle when lifting the needle. For example, the first and second engaging portions described in Chinese Invention Patent Application Publication No. CN113490574A, the non-full-circumference gear and rack-type needle described in Chinese Invention Patent Application Publication No. CN113070849A, and the meshing cylinder and meshing teeth described in Chinese Invention Patent Application Publication No. CN110253503A all require precise alignment. Positional deviations between the needle lifting mechanism and the needle, such as a shift in the needle's position after nailing, can easily lead to excessive wear, jamming, and damage to the needle lifting mechanism and the needle. To maintain precise alignment between the needle lifting mechanism and the needle, delay wear, and extend lifespan, lubrication of the needle lifting mechanism is essential. Summary of the Invention

[0010] One purpose of the present application is to overcome the defect that the nail magazine device of the existing nail gun is difficult to be compatible with straight nail gun nails of different specifications, and to provide a nail magazine device and a nail gun, so that the same nail magazine of the same nail magazine device can be compatible with straight nail gun nails of different specifications, thereby saving product costs and avoiding nailing errors.

[0011] To achieve the above-mentioned objectives, the present application provides a nail magazine device, including a side wall, a movable component and a cover, the cover being arranged on the side wall, an internal space being formed between the cover and the side wall, the movable component being located in the internal space, the first side surface of the movable component being arranged toward the side wall, and the second side surface of the movable component being arranged toward the cover, the internal space between the movable component and the cover forming a nail magazine for accommodating gun nails, the cover being configured to be able to open or close relative to the side wall to thereby open or close the nail magazine, and the movable component being configured to be able to adjust the width of the nail magazine.

[0012] Furthermore, the nail magazine device further includes a first elastic element, a first end of the first elastic element is connected to the first side surface of the movable component, and a second end of the first elastic element is connected to the side wall.

[0013] Furthermore, the side wall has a folded edge, and the cover is slidably arranged on the folded edge of the side wall.

[0014] Furthermore, the nail magazine device also includes a tail cover, which is arranged at the rear of the cover. The tail cover is configured to abut against the rear end of the side wall to prevent the cover from moving forward when the cover moves forward.

[0015] Furthermore, the nail magazine device also includes a pushing member and a second elastic element, wherein the pushing member is arranged in the nail magazine, the front end of the second elastic element is connected to the pushing member, and the rear end of the second elastic element is connected to the tail cover.

[0016] Furthermore, the cover has a receiving hole extending forward and backward, the second elastic element is arranged in the receiving hole, the receiving hole has a slit connecting to the nail magazine, the push piece has a support foot, the support foot extends into the receiving hole through the slit, and the front end of the second elastic element is connected to the support foot.

[0017] To achieve the above-mentioned purpose, the nail magazine device of the present application has a nail magazine with an outlet at the front end. The width of the nail magazine is limited by a relative movable component and an openable lid, and the width of the nail magazine can be adjusted by the movement of the movable component. A first elastic element acts on the movable component, and the elastic force applied by the first elastic element to the movable component causes the movable component to move closer to the lid.

[0018] The magazine device can be opened to place straight nails of any size into the magazine. Once the lid is closed, the first elastic element's spring force causes the movable member to press the nails against the lid, ensuring the magazine is wide enough to hold the specified size of nails without jamming or overlap. The lid also positions the nails, ensuring that any size of nails can be discharged from the outlet.

[0019] In order to enable the movable component to adjust its position according to the specifications of the nails placed in the nail magazine and make the width of the nail magazine suitable for the nails placed in it, the movable component is located between the cover and the side wall, and the first elastic element is a helical compression spring and its two ends are respectively supported on the movable component and the side wall.

[0020] In order to constrain the movable component, the side wall has corresponding upper and lower grooves, the upper edge of the movable component is slidably set in the upper groove, and the lower edge of the movable component is slidably set in the lower groove. The width of the upper groove is greater than the thickness of the upper edge of the movable component, and the width of the lower groove is greater than the thickness of the lower edge of the movable component, so that the movable component can move, and the movement of the movable component is limited within a predetermined range.

[0021] Furthermore, the cover is slidably mounted on the side wall. Specifically, the side wall has corresponding upper and lower slide grooves, the upper edge of the cover is slidably arranged in the upper slide groove, and the lower edge of the cover is slidably arranged in the lower slide groove.

[0022] Furthermore, a first stop pin is provided on the side wall, which prevents the cover from sliding off the side wall, thereby preventing the cover from sliding off the nail clamp device during use.

[0023] In order to push the nails in the nail magazine forward one by one during nailing, a push piece is arranged in the nail magazine. The push piece is assembled on the cover to move with the cover. The push piece is used to apply elastic force to the nails forward by the elastic force of the second elastic element.

[0024] To achieve a compact structure, particularly to prevent interference with the second elastic element, the cover has a receiving hole extending forward and backward. The second elastic element is a helical compression spring placed within the receiving hole. The receiving hole has a slit that connects to the staple cartridge. The push member has a leg that extends through the slit into the receiving hole to receive the elastic force of the second elastic element. This allows the push member to move backward, compressing the second elastic element. The second elastic element then applies a forward force to the push member, causing it to propel the staples in the staple cartridge forward. Furthermore, the leg located in the slit positions the push member vertically within the staple cartridge.

[0025] In order to smoothly transmit the elastic force, the elastic force of the second elastic element is applied to the supporting leg via the push pin located in the accommodating hole.

[0026] In order to prevent the push piece from separating from the cover, a second stop pin is provided at the front of the cover, a tail cover is provided at the rear of the cover, and the second elastic element and the support legs of the push piece are limited between the second stop pin and the tail cover.

[0027] To ensure reliable nail insertion, the front end of the pusher has deformed sections protruding to the left and right to increase the profile of the pusher for contact and pushing against the nail. The deformed sections are located within the grooves on either side of the nail magazine. This prevents the thin front end of the pusher from getting stuck between the nail and the movable member, or between the nail and the cover.

[0028] To press all the nails in the magazine against the cover, the movable member is plate-shaped. Furthermore, to prevent the heads of the nails from getting stuck, one or more first grooves extending in the front-to-back direction are arranged on the side of the movable member facing the magazine. The cover also has one or more second grooves extending in the front-to-back direction on the side facing the magazine. The first grooves correspond to the second grooves one-to-one. Consequently, after a nail is placed in the magazine, the nail heads are located in the corresponding grooves and can move smoothly back and forth.

[0029] In order to prevent the tip of the nail from getting stuck, a support strip is provided at the bottom of the nail magazine.

[0030] To achieve the above-mentioned purpose, the nail gun of the present application includes a gun body and the above-mentioned nail magazine device. The gun body has a striking cavity. The nail magazine device is assembled to the gun body, and the outlet of the nail magazine is connected to the striking cavity. The nail magazine device is used to push the gun nails into the striking cavity to achieve continuous nailing.

[0031] In order to prevent the cover from being accidentally opened and to constrain the nails in the nail magazine, the cover is locked in a position covering the nail magazine by an unlockable locking structure. Accordingly, the cover can be opened by unlocking to refill the nail magazine.

[0032] In this application, the width of a nail magazine containing nails is defined by a movable member and an openable lid, and the movable member's movement allows the width of the magazine to be adjusted. A first elastic element acts on the movable member, exerting a force on the movable member that forces the movable member toward the lid. Consequently, under the elastic force of the first elastic element, the movable member presses the nails in the magazine against the lid, ensuring that the magazine width is precisely adapted for storing nails of the specified specifications, preventing jamming or overlap. The lid also serves to position the nails, ensuring that nails of any specification can be discharged from the outlet.

[0033] Another object of the present application is to provide a driving device and a nail gun that utilizes a gas spring to drive a gun needle to nail, so as to overcome the defect of the existing electric nail gun caused by the gas spring permanently sealing the gas. Through reasonable structural configuration, the electric nail gun is given at least one of the following technical advantages: a compact structure that is not too large, low manufacturing cost, and a reasonable configuration of the product quality center for easy holding and use.

[0034] To achieve the above object, the present application provides a driving device, which is configured to drive a lifting wheel in a first direction to lift the gun needle during a first period, and drive an air pump in a second direction to inflate the cylinder.

[0035] Furthermore, the driving device includes:

[0036] a motor having a first output terminal and a second output terminal;

[0037] a first transmission device, the first transmission device being disposed between the first output end of the motor and the lifting wheel, the first transmission device comprising a first one-way rotation mechanism, the first transmission device being configured such that: when the first output end rotates in a first direction, the first output end drives the lifting wheel via the first transmission device; and when the first output end rotates in a second direction, the first one-way rotation mechanism disengages the first output end from driving the lifting wheel;

[0038] A second transmission device is arranged between the second output end of the motor and the air pump. The second transmission device includes a second one-way rotation mechanism. The second transmission device is configured as follows: when the second output end rotates in the second direction, the second output end drives the air pump through the second transmission device; and when the second output end rotates in the first direction, the second one-way rotation mechanism disengages the second output end from driving the air pump.

[0039] Furthermore, the first transmission device also includes a first reduction mechanism, the lifting wheel, the first reduction mechanism, the first one-way rotation mechanism and the first output end are coaxially arranged, the first reduction mechanism is a planetary gear mechanism with the input end and the output end coaxially arranged, and the first one-way rotation mechanism is a ratchet and pawl mechanism.

[0040] Furthermore, the first one-way rotation mechanism includes a first ratchet and pawl mechanism, which is configured such that: when the first output end rotates in a first direction, the first ratchet and pawl mechanism can engage to drive the lifting wheel; and when the first output end rotates in a second direction, the first ratchet and pawl mechanism can idle to disengage the first output end from driving the lifting wheel.

[0041] Furthermore, the first one-way rotation mechanism also includes a second ratchet and pawl mechanism, which is configured as follows: when the first output end rotates in a first direction and the first output end drives the lifting wheel through the first transmission device, the second ratchet and pawl mechanism can idle; and when the lifting wheel rotates in a second direction, the second ratchet and pawl mechanism engages to prevent the lifting wheel from rotating in the second direction.

[0042] Furthermore, the second transmission device also includes a second reduction mechanism and a flywheel. The flywheel is configured to drive the air pump to inflate the cylinder. The axis of the flywheel is located below the axis of the second output end. The second reduction mechanism is an off-axis gear transmission mechanism, and the second one-way rotation mechanism is a ratchet and pawl mechanism.

[0043] Furthermore, the second transmission device includes a heteroaxial gear transmission mechanism and a third ratchet and pawl mechanism that transmit power from the second output end to the flywheel in sequence. The third ratchet and pawl mechanism is configured as follows: when the second output end rotates in the second direction, the second output end drives the flywheel through the second transmission device; and when the second output end rotates in the first direction, the third ratchet and pawl mechanism disengages the second output end from driving the flywheel.

[0044] To achieve the above-mentioned purpose, the driving device for driving a nail gun needle using a gas spring in the present application comprises:

[0045] a motor having a first output terminal and a second output terminal;

[0046] a lifting wheel for raising the gun needle and compressing the gas spring;

[0047] a first transmission device disposed between the first output end of the motor and the lifting wheel, the first transmission device including a first one-way rotation mechanism. When the first output end rotates in one direction, the first output end drives the lifting wheel via the first transmission device. When the first output end rotates in the other direction, the first one-way rotation mechanism disengages the first output end from driving the lifting wheel.

[0048] a flywheel for driving an air pump;

[0049] a second transmission device disposed between the second output end of the motor and the flywheel, the second transmission device including a second one-way rotation mechanism, wherein when the second output end rotates in one direction, the second output end drives the flywheel via the second transmission device, and when the second output end rotates in the other direction, the second one-way rotation mechanism disengages the second output end from driving the flywheel;

[0050] The first one-way rotation mechanism and the second one-way rotation mechanism are configured so that when the first output end and the second output end of the motor simultaneously output torque, one of the lifting wheel and the flywheel is driven and the other is disengaged.

[0051] This drive device uses a single motor to power both the lifting wheel and the flywheel. This eliminates the need for a separate motor for both the lifting wheel and the flywheel, saving both motors and space, thus minimizing the drive device's bulk. This also reduces manufacturing costs. Because the nail gun is only inflated during initial use, refilling is unnecessary throughout the entire process. Powering both the lifting wheel and the flywheel from the same motor maximizes its effectiveness. If a single motor were used for both the lifting wheel and the flywheel, the motor driving the flywheel would remain idle for extended periods, resulting in a waste of product resources.

[0052] The driving device uses the first unidirectional rotating mechanism and the second unidirectional rotating mechanism. When the first output end and the second output end of the motor simultaneously output torque, one of the lifting wheel and the flywheel is driven, and the other is disengaged from the drive. That is, when the lifting wheel is driven, the flywheel is not driven, and when the flywheel is driven, the lifting wheel is not driven. This allows inflation and nailing to work in different time periods, reducing the load on the motor.

[0053] In order to increase the force of the lifting wheel to lift the gun needle, the first transmission device includes a first reduction mechanism, thereby amplifying the torque of the first output end on the lifting wheel.

[0054] To achieve a compact structure, the lifting wheel, first reduction mechanism, and first one-way rotation mechanism are coaxially arranged with the first output end. This reduces the radial space occupied by these structures and prevents the product from being too bulky. In particular, the first reduction mechanism is a planetary gear mechanism with the input and output ends coaxially arranged, and the first one-way rotation mechanism is a ratchet and pawl mechanism.

[0055] The first one-way rotation mechanism includes a first ratchet and pawl mechanism, which is configured so that when the first output end rotates in one direction, the first ratchet and pawl mechanism engages to provide the first output end with driving the lifting wheel, and when the first output end rotates in the other direction, the first ratchet and pawl mechanism idles to disengage the first output end from driving the lifting wheel.

[0056] To improve nail gun efficiency, the needle is typically held in a high position. This can be achieved by using a position detector to detect the needle's position, and the motor is stopped when the needle reaches a predetermined high position. This allows the needle to be driven directly into the nail after the sealed chamber is inflated to form a gas spring, without having to be lifted before nailing. To this end, the first one-way rotation mechanism includes a second ratchet and pawl mechanism. The first ratchet and pawl mechanism is located near the first output end, and the second ratchet and pawl mechanism is located near the lifting wheel. The second ratchet and pawl mechanism is configured so that when the first output end drives the lifting wheel via the first transmission device, the second ratchet and pawl mechanism rotates idly. When the lifting wheel rotates in the opposite direction, the second ratchet and pawl mechanism engages, preventing the lifting wheel from rotating in the opposite direction. Therefore, the engagement of the second ratchet and pawl mechanism ensures that the needle remains in a high position after the motor stops, preventing the needle from being forced down by the elastic force of the gas spring.

[0057] In one embodiment, the first transmission device includes a first planetary gear mechanism, a second planetary gear mechanism, a first ratchet and pawl mechanism, and a third planetary gear mechanism, which sequentially transmit power from the first output end to the lifting wheel. The first ratchet and pawl mechanism is located at the output end of the second planetary gear mechanism, and the second ratchet and pawl mechanism is located at the output end of the third planetary gear mechanism. Accordingly, when the second output end of the motor drives the flywheel through the second transmission device, the first ratchet and pawl mechanism idles, preventing the first output shaft from driving the lifting wheel, thus preventing the third and second planetary gear mechanisms from intervening. When the motor is stopped, the second ratchet and pawl mechanism prevents the lifting wheel's rotation, which corresponds to the lowering of the gun needle, from being transmitted to the second planetary gear mechanism, removing the force from the first and second planetary gear mechanisms. This ensures that the planetary gear mechanisms and ratchet and pawl mechanisms of the first transmission device are in a dormant state, preventing them from transmitting force and thus preventing fatigue.

[0058] Specifically,

[0059] The first planetary gear mechanism includes a first input gear, a first planetary gear, a first output member and a first ring gear, the first ring gear is fixed, the first planetary gear is arranged on the first output member and meshes with the first input gear and the first ring gear, and the first input gear is transmission-assembled with the first output end;

[0060] The second planetary gear mechanism includes a second input gear, second planetary gears, a second output member and a second ring gear, the second ring gear is fixed, the second planetary gears are provided on the second output member and mesh with the second input gear and the second ring gear, and the second input gear is provided on the first output member;

[0061] The first ratchet and pawl mechanism includes a first ratchet sleeve and a first pawl. The first ratchet sleeve is rotatably arranged. The inner wall of the first ratchet sleeve is provided with a first one-way tooth groove. The first pawl is arranged on the second output member and leans against the inner wall of the first ratchet sleeve by a first spring.

[0062] The third planetary gear mechanism includes a third input gear, a third planetary gear, a third output member and a third ring gear, the third ring gear is fixed, the third planetary gear is arranged on the third output member and meshes with the third input gear and the third ring gear, the third input gear is arranged on the first ratchet sleeve, and the third output member is assembled with the lifting wheel;

[0063] The second ratchet and pawl mechanism includes a second ratchet sleeve and a second pawl. The second ratchet sleeve is fixed. The inner wall of the second ratchet sleeve is provided with a second one-way tooth groove. The second pawl is arranged on the third output member and relies on the inner wall of the second ratchet sleeve by the second spring.

[0064] In another embodiment, the first transmission device includes a first ratchet and pawl mechanism, a first planetary gear mechanism, a second planetary gear mechanism, and a third planetary gear mechanism, which sequentially transmit power from the first output end to the lifting wheel. The second ratchet and pawl mechanism is disposed at the output end of the first planetary gear mechanism. Accordingly, when the second output end of the motor drives the flywheel through the second transmission device, the first ratchet and pawl mechanism idles, preventing the first output shaft from driving the lifting wheel, thereby disengaging the first, second, and third planetary gear mechanisms. When the motor is stopped, the second ratchet and pawl mechanism prevents the lifting wheel's rotation, which corresponds to the lowering of the gun needle, from being transmitted to the first planetary gear mechanism.

[0065] Specifically,

[0066] The first ratchet and pawl mechanism includes a first ratchet sleeve, a first rotating body, and a first pawl. The first ratchet sleeve is rotatable, and a first one-way tooth groove is provided on the inner wall of the first ratchet sleeve. The first rotating body is provided at the first output end. The first pawl is provided on the first rotating body and rests on the inner wall of the first ratchet sleeve via a first spring.

[0067] The first planetary gear mechanism includes a first input gear, a first planetary gear, a first output member and a first ring gear, wherein the first input gear is arranged on the first ratchet sleeve, the first ring gear is fixed, and the first planetary gear is arranged on the first output member and meshes with the first input gear and the first ring gear;

[0068] The second planetary gear mechanism includes a second input gear, a second planetary gear, a second output member, and a second ring gear, wherein the second input gear is provided on the first output member, the second ring gear is fixed, and the second planetary gear is provided on the second output member and meshes with the second input gear and the second ring gear;

[0069] The second ratchet and pawl mechanism includes a second ratchet sleeve and a second pawl, the second ratchet sleeve is fixedly arranged, the second output member extends into the second ratchet sleeve and maintains a first gap with the inner wall of the second ratchet sleeve, the first gap gradually increases in one direction and gradually decreases in the other direction, the second pawl is roller-shaped and is located in the first gap, when the second output member rotates relative to the second ratchet sleeve in the direction in which the first gap gradually decreases, the second pawl is freely located in the first gap to allow the second output member to rotate in the direction, when the second output member rotates relative to the second ratchet sleeve in the direction in which the first gap gradually increases, the second pawl is squeezed between the second output member and the inner wall of the second ratchet sleeve to achieve engagement and prevent the second output member from rotating in the direction;

[0070] The third planetary gear mechanism includes a third input gear, a third planetary gear, a third output member and a third ring gear. The third input gear is arranged on the second output member, the third ring gear is fixed, the third planetary gear is arranged on the third output member and meshes with the third input gear and the third ring gear, and the third output member is assembled with the lifting wheel transmission.

[0071] As described above, the first transmission device of the two embodiments embodies the flexible configuration of the planetary gear mechanism and the ratchet and pawl mechanism.

[0072] To increase the force of the flywheel's inflation, the second transmission device includes a second reduction mechanism, which amplifies the torque of the second output end to the flywheel. The flywheel's axis is located below the axis of the second output end, and the inflation pump is located above the flywheel. This structure provides a relatively reasonable space for the movement of the connecting rod relative to the motor. When these structures are arranged within the fuselage, the volume of this part of the fuselage is not excessively large. Specifically, the second reduction mechanism is a coaxial gear transmission mechanism, and the second one-way rotation mechanism is a ratchet and pawl mechanism.

[0073] In one embodiment, the second transmission device includes a non-axial gear transmission mechanism and a third ratchet and pawl mechanism that sequentially transmits power from the second output end to the flywheel. The third ratchet and pawl mechanism is configured such that when the second output end rotates in one direction, the second output end drives the flywheel via the second transmission device, and when the second output end rotates in the other direction, the third ratchet and pawl mechanism disengages the second output end from driving the flywheel. Specifically:

[0074] The off-axis gear transmission mechanism includes a meshing driving gear and a driven gear, the driving gear is arranged at the second output end, and the driven gear is located below the driving gear;

[0075] The third ratchet and pawl mechanism includes a third ratchet sleeve, a third rotating body and a third pawl. The third ratchet sleeve is arranged on the driven gear. The inner wall of the third ratchet sleeve is provided with a third one-way tooth groove. The third rotating body is arranged on the flywheel. The third pawl is arranged on the third rotating body and leans against the inner wall of the third ratchet sleeve by a third spring.

[0076] In another embodiment, the second transmission device includes a third ratchet and pawl mechanism and a non-axial gear transmission mechanism that sequentially transmits power from the second output end to the flywheel. The third ratchet and pawl mechanism is configured such that when the second output end rotates in one direction, the second output end drives the flywheel via the second transmission device, and when the second output end rotates in the other direction, the third ratchet and pawl mechanism disengages the second output end from driving the flywheel. Specifically:

[0077] The third ratchet and pawl mechanism includes a third rotating body, a third pawl, and a third ratchet sleeve. The third rotating body is arranged at the second output end. The third ratchet sleeve is rotatable. The inner wall of the third ratchet sleeve is provided with a third one-way tooth groove. The third pawl is arranged on the third rotating body and rests on the inner wall of the third ratchet sleeve via a third spring.

[0078] The off-axis gear transmission mechanism includes a meshing driving gear and a driven gear, the driving gear is arranged on the third ratchet sleeve, the driven gear is located below the driving gear, and the flywheel is coaxially arranged on the driven gear.

[0079] As described above, the second transmission device of the two embodiments embodies the flexible configuration of the ratchet and pawl mechanism and the off-axis gear transmission mechanism.

[0080] To achieve the above objectives, the nail gun of the present application includes:

[0081] The driving device of the present application;

[0082] A cylinder is provided with a first piston, the first piston is connected to a downwardly extending gun needle, the upper side of the first piston is a sealed cavity, the sealed cavity is used to be filled with compressed air to form a gas spring, and the sealed cavity has an exhaust port;

[0083] an air pump for charging compressed air into the sealed chamber, comprising a second piston provided with a connecting rod eccentrically connected to the flywheel;

[0084] A nail magazine, used to store nails and transport the stored nails to the lower end of the gun needle;

[0085] The driving device, the air cylinder, the air pump and the handle are integrated into a body, and the nail magazine is detachably arranged on the body.

[0086] This electric nail gun inflates the sealed chamber during use and releases the compressed gas in the gas spring when the nail gun is not in use (e.g., for storage or transportation), thereby overcoming the drawback of the gas spring permanently sealing the gas. This nail gun, with the drive device of the present application, has a rationally configured structure, a compact structure, and low manufacturing cost.

[0087] To optimally position the product's center of mass, the handle extends from the side wall to the rear of the cylinder. The power supply is located at the rear end of the handle. The drive unit and magazine are separated by a plane between the handle and the cylinder. The lifting wheel is tangential to the gun needle, and the air pump is located on the end of the drive unit away from the lifting wheel. This ensures that the product's center of mass is positioned as close to its geometric center as possible, allowing the gun to be used in any desired grip without shifting the center of mass and increasing the strain on the grip.

[0088] In one embodiment, the nail gun further includes a controller configured to switch the direction of the motor. When the nail gun is initially used, the motor is controlled to operate in a second direction, causing the second output end to first drive the flywheel, which in turn drives the air pump to charge compressed air into the sealed chamber to form a gas spring. The motor is then controlled to operate in a first direction, causing the first output end to drive the lifting wheel, which lifts the needle and the first piston and compresses the gas spring. The first direction of the motor is opposite to the second direction of the motor. The first direction of the motor is controlled by a nailing switch when operating in the first direction, and the lifting wheel lifts the needle to a predetermined position and then releases the needle, causing the gas spring to apply force to the first piston to push the needle to engage the nail. Accordingly, when the nail gun is used, the air pump can first charge the sealed chamber with compressed air to form the gas spring under the control of the controller, and then the motor is controlled to operate in the first direction of the motor to drive the lifting wheel to engage the nail.

[0089] To control the air pressure in the gas spring, the nail gun includes a pressure sensor for detecting the pressure in the sealed chamber or the air pump. This pressure sensor is connected to a controller, which switches the motor to the first rotational direction when the air pump fills the sealed chamber with compressed air to a set value. By adjusting the set pressure in the gas spring to the desired value, the nailing force of the gun needle can be adjusted to suit different nail types.

[0090] In one embodiment, a switch is provided on the fuselage to control the motor to work in a first direction or a second direction. The user can use the switch to switch the motor to work in the first direction for nailing or in the second direction for inflation.

[0091] To control the air pressure in the gas spring, the nail gun includes a pressure gauge for detecting the pressure in the sealed chamber or the air pump. The pressure gauge reads the pressure of the gas spring. If the pressure in the gas spring is too high or too low, the gas spring can be deflated or inflated to maintain the pressure at a reasonable value.

[0092] By using the same motor to power the lifting wheel and the flywheel, the present invention can save one motor compared to equipping the lifting wheel and the flywheel with one motor each, thereby saving space for equipping the motor and reducing the size of the drive device. This can also reduce the manufacturing cost of the product.

[0093] In this application, by means of the first unidirectional rotating mechanism and the second unidirectional rotating mechanism, when the first output end and the second output end of the motor simultaneously output torque, one of the lifting wheel and the flywheel is driven, and the other is disengaged from the drive, that is, when the lifting wheel is driven, the flywheel is not driven, and when the flywheel is driven, the lifting wheel is not driven, so that inflation and nailing work in different time periods, reducing the load on the motor.

[0094] The present application configures an exhaust port for the sealed cavity forming the gas spring and an air pump for the sealed cavity. The air pump inflates the sealed cavity when the electric nail gun is used, and releases the compressed gas in the gas spring when the nail gun is not in use (such as storage, transportation, etc.), thereby overcoming the defect caused by the gas spring permanently sealing the gas.

[0095] The third object of the present application is to overcome the defects of the existing nail gun, such as excessive wear, jamming, damage to the needle lifting mechanism and the needle, caused by position deviation between the needle lifting mechanism and the needle, and to provide a needle lifting mechanism and a nail gun to ensure that the needle lifting mechanism and the needle can maintain precise cooperation regardless of whether there is a deviation in the position of the needle and the needle lifting mechanism after nailing.

[0096] To achieve the above objectives, the present application provides a gun needle lifting mechanism, comprising:

[0097] A gun needle having teeth arranged along its length;

[0098] The lifting wheel comprises a first portion and a second portion, wherein the first portion is provided with a lifting portion, wherein the circumference corresponding to the first portion has a first angular range, and the circumference corresponding to the second portion has a second angular range; when the lifting wheel rotates to a position corresponding to the teeth in the first angular range, the lifting portion is configured to engage with the teeth to lift the gun needle; when the lifting wheel rotates to a position corresponding to the teeth in the second angular range, the lifting portion is configured to disengage from the teeth to release the gun needle;

[0099] a movable member, the movable member being assembled on the lifting wheel and being configured to move from a first position to a second position to adjust the meshing of the lifting portion and the teeth when the lifting wheel rotates;

[0100] The elastic element is configured to push the movable member to move from the second position to the first position.

[0101] Furthermore, the movable member is assembled at the starting end of the first angular range on the lifting wheel, the starting end being the end in the first angular range where the lifting portion and the teeth begin to mesh when the lifting wheel rotates to lift the gun needle, and the movable member has a force-bearing portion and a meshing portion;

[0102] The force-bearing part and the meshing part are configured as follows:

[0103] When the movable member is in the first position: the force-bearing portion is in the resisting position, and the meshing portion deviates from the meshing position;

[0104] When the movable member rotates with the lifting wheel, the force-bearing portion is resisted by the teeth and overcomes the elastic force of the elastic element, causing the movable member to move from the first position to the second position;

[0105] When the movable part is located at the second position: the force-bearing part deviates from the resisting position, the meshing part is located at the meshing position, and is in a sequence of meshing with the teeth together with the lifting part.

[0106] Furthermore, the pitches between adjacent teeth on the gun needle are equal, the spacings between adjacent lifting portions on the lifting wheel are equal, and when the meshing portion is in the meshing position and is in a sequence of meshing with the teeth together with the lifting portion, the angular distance between the meshing portion and the adjacent lifting portion is equal to the spacing between the adjacent lifting portions.

[0107] Furthermore, a second gap is formed between the two spaced walls, two ends of the lifting portion are assembled on the two spaced walls, and a middle portion of the lifting portion is located in the second gap.

[0108] Furthermore, the movable member can be pivotally assembled in the second gap via the pin shaft.

[0109] Furthermore, the lifting wheel includes a rotating shaft and a wheel body that rotates along with the rotating shaft. The wheel body is provided with an oiling nozzle, and a grease channel from the oiling nozzle to the lifting part is provided in the wheel body.

[0110] Furthermore, a grease channel from the grease injection nozzle to the movable part is provided in the wheel body.

[0111] To achieve the above objectives, the needle lifting mechanism of the present application includes:

[0112] A gun needle having a plurality of teeth distributed along its length;

[0113] The lifting wheel has a circumference including a first angular range and a second angular range, wherein a plurality of lifting portions are distributed in the first angular range so that when the lifting wheel rotates to a tooth corresponding to the first angular range, the lifting portions engage with the teeth to lift the gun needle, and no lifting portions are distributed in the second angular range so that when the lifting wheel rotates to a tooth corresponding to the second angular range, the lifting portions disengage from the teeth to release the gun needle;

[0114] a movable member movably mounted on the lifting wheel and configured to change from a first position to a second position as the lifting wheel rotates to adjust the lifting portion to accurately mesh with the teeth;

[0115] The elastic element acts on the movable member to cause the movable member to return from the second position to the first position.

[0116] The gun needle lifting mechanism comprises a movable part disposed on the lifting wheel, wherein the movable part is configured to change from a first position to a second position as the lifting wheel rotates, thereby adjusting the lifting portion to accurately mesh with the teeth. Accordingly, regardless of whether there is a position deviation between the gun needle and the lifting wheel after nailing, the lifting wheel and the gun needle can maintain precise coordination, thereby delaying defects such as excessive wear, jamming, and damage to the lifting wheel and the gun needle at the meshing portion of the lifting wheel and the gun needle.

[0117] The gun needle lifting mechanism is provided with an elastic element, which acts on the movable part to cause the movable part to reset from the second position to the first position, so that the movable part can be reset after each nailing, so that the lifting wheel and the gun needle can maintain precise cooperation each time the lifting wheel lifts the gun needle.

[0118] The gun needle lifting mechanism is only provided with movable parts on the lifting wheel, and the diameter of the lifting wheel is not substantially increased, thereby maintaining the structure of the gun needle lifting mechanism compact.

[0119] In order to simplify the structure, the movable part adjusts the lifting part to accurately mesh with the teeth by changing the teeth of the needle from the first position to the second position, thereby avoiding the need to configure a separate structure for the movable part to promote the movable part to change from the first position to the second position and avoiding structural complexity. This effect is achieved through the following structure:

[0120] The movable member is movably assembled on the lifting wheel near the starting end of the first angular range. The starting end is the end of the first angular range that first passes through the lifting portion and engages with the teeth when the lifting wheel rotates to lift the gun needle. The movable member has a force-bearing portion and an engaging portion.

[0121] The force-bearing part and the meshing part are configured as follows: when the movable part is in the first position, the force-bearing part is in the resisting position, and the meshing part deviates from the meshing position; when the movable part rotates with the lifting wheel, the force-bearing part is resisted by the teeth and overcomes the elastic force of the elastic element to make the movable part move from the first position to the second position; when the movable part is in the second position, the force-bearing part deviates from the resisting position, the meshing part is in the meshing position and is in a sequence of meshing with the teeth together with the lifting part.

[0122] Accordingly, after each nailing operation, regardless of whether there is any deviation in the position of the gun needle and the lifting wheel, as the lifting wheel rotates, the force-bearing portion is always resisted by the teeth, overcoming the elastic force of the elastic element to move the movable member from the first position to the second position, causing the force-bearing portion to deviate from the resisting position, and the meshing portion to be in the meshing position and in the meshing sequence with the teeth together with the lifting portion. Because the movable member is located on the lifting wheel near the starting end of the first angular range, the meshing portion first engages with the teeth, placing the lifting portion in the meshing sequence with the teeth.

[0123] In particular, in order to ensure that any lifting portion can engage with any tooth to lift the gun needle, the pitches of the multiple teeth distributed on the gun needle are equal, where the pitch is the distance between any two adjacent teeth, the spacing between any two adjacent lifting portions is equal, and the spacing between the lifting portions is the angular distance between any two adjacent lifting portions. When the meshing portion is in the meshing position and is in a sequence of meshing with the teeth together with the lifting portion, the angular distance between the meshing portion and the adjacent lifting portion is equal to the spacing between the lifting portions, that is, the sequence of meshing with the teeth is continuous, so that the meshing portion acts like a lifting portion and is located at the revealed position of this sequence.

[0124] Preferably, the lifting portion is a pin assembled on the lifting wheel, which is convenient for processing and saving manufacturing costs, and is also conducive to lubrication and replacement of the pin.

[0125] To ensure uniform force distribution and prevent deformation of the pin, the lifting wheel includes two spaced walls, forming a second gap between the two walls. The ends of the lifting portion are mounted on the two walls, with the center of the lifting portion located in the second gap. This structure ensures that force is applied to the pin at both ends, while the center receives force when the needle is lifted, preventing pin deformation.

[0126] To prevent the pin from constantly contacting the teeth of the nail gun, which could cause localized wear, the pin is movably mounted on a lifting wheel. The end of the lifting wheel is covered with a cover plate, which restrains the pin to the lifting wheel. This allows the pin to move when the gun needle is lifted, allowing it to engage the teeth at different locations. This also facilitates comprehensive lubrication of the pin.

[0127] In order to increase the acceptance balance of the movable part and avoid the acceptance deviation when the movable part contacts the gun needle, the movable part is swingably assembled in the second gap through the distribution shaft.

[0128] The structure in which the elastic element acts on the movable part can take many forms:

[0129] In one embodiment, the lifting wheel is provided with an arcuate through-hole, through which a rod is inserted. An elastic element acts on the rod, causing it to apply an elastic force to the movable member. Guided by the arcuate through-hole, the rod can move along a predetermined trajectory, constraining the movable member within a certain range of motion. Specifically, the elastic element includes a first torsion spring and a second torsion spring, which are located at opposite ends of the lifting wheel and act on the rod, respectively. This ensures that the rod is evenly stressed and that a uniform elastic force is applied to the movable member.

[0130] In another embodiment, the elastic element is a tension spring, and two ends of the tension spring are respectively connected to the lifting wheel and the movable part.

[0131] In the third embodiment, the elastic element is a compression spring, and two ends of the compression spring are respectively supported on the lifting wheel and the movable member.

[0132] When the elastic element is a tension spring and a compression spring, the structure is simple and the number of parts is small.

[0133] In order to avoid interference between the contour of the lifting wheel and the gun needle when the lifting wheel rotates to the teeth corresponding to the second angle range, the edge of the lifting wheel in the second angle range is concave.

[0134] To achieve the above objectives, the nail gun of the present application includes:

[0135] The gun needle lifting mechanism of this application;

[0136] A motor for driving the lifting wheel to rotate;

[0137] A cylinder, wherein a first piston is provided in the cylinder, a gun needle is connected to the first piston and extends downward, and a gas spring is provided on the upper side of the first piston for pushing the first piston to move downward;

[0138] The nail magazine is used to store nails and transport the stored nails to the lower end position of the gun needle.

[0139] Accordingly, when the nail gun is working, the motor drives the lifting wheel to rotate to lift the gun needle. As the motor rotates continuously, the gun needle is repeatedly lifted and lowered for nailing. Regardless of whether there is a deviation between the position of the gun needle and the lifting wheel after nailing, the lifting wheel and the gun needle can maintain precise coordination, delaying defects such as excessive wear, jamming, and damage to the lifting wheel and the gun needle at the meshing part of the lifting wheel and the gun needle.

[0140] In order to apply elastic force to the needle after the needle is lifted to drive the nail, the gas spring can have different structural forms:

[0141] In one embodiment, a sealed chamber is formed on the upper side of the first piston, and a permanently compressed gas is sealed in the sealed chamber to form a gas spring. This type of gas spring maintains elasticity at all times, allowing the nail gun to be driven directly whenever it is activated.

[0142] In another embodiment, the nail gun includes an air pump; a sealed chamber formed above the first piston, the sealed chamber having an exhaust port; the air pump fills the sealed chamber with compressed air to form a gas spring, and the compressed air in the sealed chamber is released through the exhaust port to eliminate the gas spring. This type of gas spring structure allows compressed air to be released when the nail gun is not in use, thereby extending the life of the sealed chamber's sealing structure and avoiding safety hazards posed by the gas spring. The air pump inflates the gas spring to the required pressure each time the nail gun is used, and the required pressure can be adjusted as needed.

[0143] To simplify the structure, the motor is configured for bidirectional rotation. The motor drives the lifting wheel via a first transmission mechanism, and the motor drives the air pump via a second transmission mechanism. The first and second transmission mechanisms are configured so that when the motor rotates in either direction, one of the lifting wheel and the air pump is driven, while the other is decoupled. Thus, a single motor drives both the lifting wheel and the air pump, without interfering with each other.

[0144] The present application configures a movable part on the lifting wheel, and the movable part is configured to change from a first position to a second position as the lifting wheel rotates to adjust the lifting part to accurately engage with the teeth. Accordingly, regardless of whether there is a deviation between the position of the gun needle and the lifting wheel after nailing, the lifting wheel and the gun needle can maintain precise coordination, delaying defects such as excessive wear, jamming, and damage to the lifting wheel and the gun needle at the engaging portion of the lifting wheel and the gun needle.

[0145] The present application configures an elastic element so that the elastic element acts on the movable part to reset the movable part from the second position to the first position, so that the movable part can be reset after each nailing, so that the lifting wheel and the gun needle can maintain precise cooperation each time the lifting wheel lifts the gun needle.

[0146] The present application configures movable parts on the lifting wheel without substantially increasing the diameter of the lifting wheel, thereby maintaining the structure of the gun needle lifting mechanism compact.

[0147] The present application realizes driving of the lifting wheel and the air pump by one motor, and the driving of the lifting wheel and the air pump do not interfere with each other, thereby simplifying the structure of the nail gun.

[0148] The fourth purpose of this application is to overcome the defect of the existing nail gun's needle lifting mechanism and the high-frequency contact and engagement with the needle that easily causes wear, and to provide a lubrication structure of the needle lifting mechanism and a nail gun to provide lubrication for the needle lifting mechanism, ensure that the needle lifting mechanism and the needle maintain precise coordination, delay wear, and extend service life.

[0149] To achieve the above objectives, the lubrication structure of the needle lifting mechanism of the present application includes:

[0150] A lifting wheel for lifting a gun needle comprises a rotating shaft and a wheel body rotating with the rotating shaft, wherein the circumference of the wheel body comprises a first angular range and a second angular range, wherein a plurality of lifting portions are distributed in the first angular range so that when the lifting wheel rotates to teeth corresponding to the gun needle within the first angular range, the lifting portions engage with the teeth to lift the gun needle, and wherein no lifting portions are distributed in the second angular range so that when the lifting wheel rotates to teeth corresponding to the gun needle within the second angular range, the lifting portions disengage from the teeth to release the gun needle;

[0151] Among them, a grease nozzle is arranged on the lifting wheel, and a grease channel from the grease nozzle to the lifting part is distributed in the wheel body.

[0152] Accordingly, grease is injected into the grease channel through the grease nipple, which lubricates the lifting part, reducing and delaying wear on the meshing of the lifting part and the teeth, extending the life of the lifting part and maintaining a long-term precise fit between the lifting part and the teeth. Furthermore, the grease channel can be replenished through the grease nipple during use after leaving the factory.

[0153] In order to ensure that the lubricating grease can fully lubricate the lifting part, the lifting part is a pin assembled on the wheel body, and each pin is located at the end of a grease channel.

[0154] To prevent grease loss, particularly grease being thrown out of the grease passages due to centrifugal force when the lifting wheel rotates, axial grooves are provided on the circumference of the wheel body. The ends of the grease passages communicate with the axial grooves, and the pins are positioned within their corresponding axial grooves. Thus, when the lifting wheel rotates, the pins block the ends of the grease passages, preventing grease from being thrown out due to centrifugal force.

[0155] To ensure proper meshing of the lifting portion with the teeth, the wheel body includes two spaced walls, forming a second gap between the two walls. The wheel body's periphery is located at the bottom of the second gap, and the pin's ends are mounted between the two spaced walls, with the pin's center located within the second gap. Consequently, when the lifting portion engages the teeth to lift the needle, the two spaced walls constrain and guide the needle within the second gap, providing support and preventing it from swinging.

[0156] In order to fully lubricate the pin, the pin is movably mounted in the hole of the lifting wheel. This allows the pin to shift position during the engagement process with the tooth, allowing the lubricating grease to adhere to different parts of the pin.

[0157] In order to prevent the movably assembled pin from being separated from the lifting wheel, the end surface of the lifting wheel is covered with a cover plate, which constrains the pin in the hole of the lifting wheel.

[0158] In order to ensure that the lifting part of the lifting wheel can accurately mesh with the teeth of the gun needle and avoid deviation, a movable part is configured on the lifting wheel. The movable part is configured to change position as the lifting wheel rotates to adjust the lifting part to accurately mesh with the teeth distributed on the gun needle; a grease channel distributed in the wheel body from the grease nozzle to the movable part is used to inject lubricating grease to lubricate the movable part.

[0159] Furthermore, an arcuate groove is provided on the periphery of the wheel body, and the movable part is located in the arcuate groove via its arcuate rotating portion, and the end of the grease channel is connected to the arcuate groove. Accordingly, the lubricating grease from the grease channel can lubricate both the movement of the movable part itself and the cooperation between the movable part and the gun needle.

[0160] To prevent the movable member from shifting out of position when engaged with the needle, the wheel body includes two spaced walls, forming a second gap between the two walls. The wheel body's peripheral edge is located at the bottom of the second gap, and the movable member is positioned within the second gap. The movable member is rotatably assembled to the two spaced walls via a pin. Consequently, when the lifting portion engages the teeth to lift the needle, the two spaced walls constrain and guide the needle and movable member within the second gap, supporting the needle and preventing it from swinging, and limiting the movable member's position to prevent it from shifting out of its engaged position with the needle.

[0161] In order to facilitate processing and enable the lubricating grease to be filled into each grease channel when the lubricating grease is injected into the grease channel through the grease injection nozzle, the grease channels are distributed radially from the center of the wheel body.

[0162] An axial hole is provided in the shaft, connected to a grease channel, and a grease nozzle is located at one end of the shaft. This ensures the grease nozzle maintains dynamic balance as the lifting wheel rotates, and its position is well-defined, making it easy to connect an external device such as a grease gun to fill the lubricant.

[0163] In order to prevent lubricating grease from leaking out of the grease filling nozzle, the grease filling nozzle includes a cap, a ball and a spring. The cap has an grease filling hole, and the ball is supported by the spring and blocks the grease filling hole, making the grease filling nozzle a one-way valve that can only inject grease into the grease channel.

[0164] To achieve the above objectives, the nail gun of the present application includes:

[0165] A gun needle lifting mechanism, comprising a gun needle and a lifting wheel for lifting the gun needle, wherein the gun needle has a plurality of teeth distributed along its length, and the gun needle lifting mechanism is equipped with the lubrication structure of the present application;

[0166] A motor for driving the lifting wheel to rotate;

[0167] A cylinder, wherein a first piston is provided in the cylinder, a gun needle is connected to the first piston and extends downward, and a gas spring is provided on the upper side of the first piston for pushing the first piston to move downward;

[0168] The nail magazine is used to store nails and transport the stored nails to the lower end position of the gun needle.

[0169] Accordingly, when the nail gun is nailing, the meshing parts of the lifting wheel and the gun needle can be lubricated, reducing and delaying the wear of the lifting part and the tooth meshing, extending the service life, and enabling the lifting part and the teeth to maintain long-term precise matching.

[0170] In order to facilitate the replenishment of lubricating grease to the grease channel through the grease filling nozzle, the grease filling nozzle is hidden in the machine body, and a through hole corresponding to the grease filling nozzle is provided on the machine body, and a cover is provided on the through hole.

[0171] This application utilizes a grease nipple on the lifting wheel, with grease channels extending from the nipple to the lifting portion distributed within the wheel body. Lubricating grease can be injected into the grease channels through the nipple, lubricating the lifting portion, reducing and delaying wear on the meshing of the lifting portion and the teeth, extending their lifespan and ensuring a long-term, precise fit between the lifting portion and the teeth. Furthermore, the grease nipple allows for replenishment of lubricating grease into the grease channels during post-production use. BRIEF DESCRIPTION OF THE DRAWINGS

[0172] FIG1 is an isometric view of the nail magazine device of the present application;

[0173] FIG2 is a schematic orthographic projection diagram of the nail magazine device shown in FIG1 ;

[0174] FIG3 is an enlarged cross-sectional view taken along the line AA of FIG2 ;

[0175] FIG4 is an enlarged cross-sectional view taken along line BB of FIG2 ;

[0176] FIG5 is an enlarged cross-sectional view taken along the CC line of FIG2 ;

[0177] FIG6 is an enlarged cross-sectional view taken along the DD line of FIG2 ;

[0178] FIG7 is a schematic diagram of a nail gun placed in the nail magazine shown in FIG6;

[0179] FIG8 is a schematic diagram of the assembly relationship between the movable member and the side wall;

[0180] Figure 9 is a schematic structural diagram of the cover;

[0181] FIG10 is a schematic diagram of the structure shown in FIG8 from another perspective;

[0182] FIG11 is a schematic diagram of the nail magazine device shown in FIG1 with the cover opened and nails placed into the nail magazine;

[0183] FIG12 is a schematic diagram showing the configuration relationship between the nail magazine device and the gun body;

[0184] FIG13 is a schematic diagram of a nail magazine device configured on a gun body;

[0185] FIG14 is an isometric view of a nail gun of the present application;

[0186] FIG15 is a schematic cross-sectional view of the nail gun shown in FIG14;

[0187] FIG16 is a cross-sectional view taken along line EE of FIG15 , wherein the gun needle is lifted to the highest position by the lifting wheel;

[0188] FIG17 is a schematic diagram of the lifting wheel in FIG16 releasing the gun needle so that the gun needle descends from the highest position to perform nailing;

[0189] FIG18 is a schematic diagram of the gun needle in FIG17 descending to the lowest position for nailing;

[0190] FIG19 is an enlarged view of the lifting wheel and the gun needle in FIG16;

[0191] FIG20 is a schematic diagram of the lifting wheel in FIG19 releasing the gun needle so that the gun needle descends from a high position to perform nailing;

[0192] FIG21 is a schematic diagram of the gun needle in FIG20 descending to the lowest position for nailing;

[0193] FIG22 is a schematic diagram showing that when the lifting wheel in FIG21 continues to rotate, the force-bearing portion of the movable member is blocked by the teeth, causing the movable member to move from the first position to the second position;

[0194] FIG23 is a schematic diagram showing the movable member in FIG22 moving to the second position so that the meshing portion is located in the meshing position and meshes with the teeth on the needle;

[0195] FIG24 is a schematic diagram showing that the gun needle has not fallen to the lowest position after nailing and is adjusted by the movable member so that the lifting portion is accurately engaged with the teeth;

[0196] FIG25 is a schematic diagram of a lifting wheel of a structure of the present application;

[0197] FIG26 is a schematic diagram of FIG25 from another perspective;

[0198] FIG27 is a schematic diagram of the structure of the lifting wheel shown in FIG25;

[0199] FIG28 is a schematic diagram of the structure of the lifting wheel shown in FIG27 from another perspective;

[0200] FIG29 is a schematic diagram of another structure of a lifting wheel of the present application;

[0201] FIG30 is a schematic diagram of a lifting wheel of a third structure of the present application;

[0202] FIG31 is a schematic diagram of the assembly structure of a driving device, an air pump, and an air cylinder of the present application;

[0203] FIG32 is a schematic diagram of a driving device driving a gun needle;

[0204] FIG33 is an exploded schematic diagram of the structure of the air pump and part of the drive device in the structure shown in FIG32;

[0205] FIG34 is a schematic diagram of the exploded structure of a portion of the driving device in the structure shown in FIG32;

[0206] FIG35 is a schematic diagram of the structure shown in FIG33 from another perspective;

[0207] FIG36 is a schematic diagram of the structure shown in FIG34 from another perspective;

[0208] FIG37 is a schematic diagram of the assembly structure of another driving device, air pump and cylinder of the present application;

[0209] FIG38 is a schematic diagram of another driving device driving the gun needle;

[0210] FIG39 is an exploded schematic diagram of the structure of the air pump and part of the drive device in the structure shown in FIG38;

[0211] FIG40 is a schematic diagram of the exploded structure of a portion of the driving device in the structure shown in FIG38;

[0212] FIG41 is a schematic diagram of the structure shown in FIG39 from another perspective;

[0213] FIG42 is a schematic diagram of the structure shown in FIG40 from another perspective;

[0214] FIG43 is a cross-sectional view of the second ratchet and pawl mechanism in an engaged state;

[0215] FIG44 is a cross-sectional schematic diagram of the second ratchet and pawl mechanism in an idling state;

[0216] FIG45 is a schematic diagram of a lifting wheel equipped with a grease nozzle;

[0217] FIG46 is a schematic diagram of an orthographic projection of the structure shown in FIG31 from one viewing angle;

[0218] FIG47 is a cross-sectional view taken along line FF of FIG46;

[0219] FIG48 is a cross-sectional view taken along line GG of FIG47 ;

[0220] Explanation of the numbers in the figure: 100 nail magazine, 101 outlet, W width of nail magazine, 102 support bar; 200 movable member, 201 first elastic element, 202 upper edge of movable member, 203 lower edge of movable member, 204 first groove; 300 cover, 301 upper edge of cover, 302 lower edge of cover, 303 accommodating hole, 304 slit, 305 second stop pin, 306 tail cover, 307 second groove, 308 protrusion; 400 side wall, 401 upper card groove, 402 lower card groove, 403 upper slide groove, 404 lower slide groove, 405 first stop pin; 500 push member, 501 second elastic element, 502 support foot, 503 push column, 504 deformation part; 600 gun body, 601 impact chamber, 602 hook; 700 nail magazine device; 800 nail gun; 10 gun needle lifting mechanism: 110 Gun needle, 111 Tooth, S tooth pitch, 120 Lifting wheel, 121 Lifting portion, 122 Wall, 123 Second slit, 124 Cover plate, 125 Arc-shaped through hole, 126 Rod, 127 Rotating shaft, 128 Wheel body, 129 Grease channel, 1201 Missing portion, 1210 Axial groove, 1211 Grease channel end, 1212 Hole, 1213 Arc-shaped groove, 1214 Axial hole, α First angular range, β Second angular range, δ Spacing between lifting portions, θ Angular distance between meshing portion and adjacent lifting portion, 130 Movable part, 131 Force-bearing portion, 132 Meshing portion, 133 Pin, 134 Arc-shaped rotating portion; 141 First torsion spring, 142 Second torsion spring, 143 Tension spring, 144 Compression spring; 150 Oiling nozzle: 151 Cap, 152 Ball, 153 Spring, 154 Oiling hole; 20 Driving device: 210 Motor: 2101 First output end, 2102 Second output end; 220 First transmission device: 2210 First ratchet and pawl mechanism: 2211 First ratchet sleeve, 2212 First pawl, 2213 First one-way tooth groove, 2214 First spring, 2215 First rotating body, 2220 Second ratchet and pawl mechanism: 2221 Second ratchet sleeve, 2222 Second pawl, 2223 Second one-way tooth groove, 2224 Second spring, 2225 First gap, 2230 First planetary gear mechanism: 2231 First input gear, 2232 First planetary gear, 2233 First output member, 2234 First ring gear, 2240 Second planetary gear mechanism: 2241 Second input gear, 2242 Second planetary gear, 2243 Second output member, 2244 Second ring gear, 2250 Third planetary gear mechanism: 2251 Third input gear, 2252 Third planetary gear, 2253 Third output member, 2254 Third ring gear, 230 Second transmission device: 2310 Off-axis gear transmission mechanism: 2311 Driving gear, 2312 Driven gear;2320 Third ratchet and pawl mechanism: 2321 Third ratchet housing, 2322 Third rotating element, 2323 Third pawl, 2324 Third one-way tooth groove, 2325 Third spring, 240 Flywheel; 30 Cylinder: 310 First piston, 320 Sealed chamber, 330 Exhaust port, 325 Pressure gauge; 40 Nail magazine, 410 Nail, 420 Gun nozzle; 50 Air pump: 510 Air tube, 531 Second piston, 532 Connecting rod; 60 Handle, 610 Power supply, 620 Nail-driving switch; 70 Body, 701 Through hole, 702 Lid. DETAILED DESCRIPTION

[0221] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0222] The terms "including" and "having" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusions. For example, a method or product that includes a series of technical features is not necessarily limited to those technical features clearly listed, and may also include other technical features that are not clearly listed and can be included in the method or product.

[0223] In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. "Up" and "down," "left" and "right," and "front" and "rear" are opposite directions.

[0224] In the description of the present invention, it should be understood that the technical features defined by the terms "first", "second", etc., which have sequential concepts, are only used to clearly describe the defined technical features so that the defined technical features can be clearly distinguished from other technical features, and do not represent such naming in actual implementation. Therefore, it cannot be understood as a limitation on the present invention.

[0225] The present invention is described in detail below with reference to specific embodiments and accompanying drawings.

[0226] In one embodiment, as shown in Figures 1-11, a nail magazine device includes a side wall 400, a movable component 200 and a cover 300, the cover 300 is arranged on the side wall 400, and an internal space is formed between the cover 300 and the side wall 400. The movable component 200 is located in the internal space, the first side of the movable component 200 is arranged toward the side wall 400, and the second side of the movable component 200 is arranged toward the cover 300. The internal space between the movable component 200 and the cover 300 forms a nail magazine 100 for accommodating nails 800, the cover 300 is configured to be able to open or close relative to the side wall 400 to open or close the nail magazine 100, and the movable component 200 is configured to be able to adjust the width of the nail magazine 100.

[0227] The magazine device further includes a first elastic element 201 , a first end of the first elastic element 201 is connected to a first side surface of the movable component 200 , and a second end of the first elastic element 201 is connected to the side wall 400 .

[0228] Optionally, the side wall 400 has a folded edge, and the cover 300 is slidably disposed on the folded edge of the side wall 400 .

[0229] The nail magazine device further includes a tail cover 306 , which is disposed at the rear portion of the cover 300 . The tail cover 306 is configured to abut against the rear end of the side wall 400 to prevent the cover 300 from continuing to move forward when the cover 300 moves forward.

[0230] The magazine device further includes a push member 500 and a second elastic element 501 . The push member 500 is disposed in the magazine 100 . The front end of the second elastic element 501 is connected to the push member 500 , and the rear end of the second elastic element 501 is connected to the tail cover 306 .

[0231] The cover 300 has a receiving hole 303 extending forward and backward, the second elastic element 501 is arranged in the receiving hole 303, the receiving hole 303 has a slit 304 connected to the nail magazine 100, the push member 500 has a support foot 502, the support foot 502 extends into the receiving hole 303 through the slit 304, and the front end of the second elastic element 501 is connected to the support foot 502.

[0232] The movable member 200 presses the nails 800 in the magazine 100 against the cover 300, ensuring that the width W of the magazine 100 is precisely adapted to store nails of the specified specifications, preventing jamming or overlap. Furthermore, the cover 300 positions the nails 800, ensuring that nails 800 of any specification can be discharged from the outlet 101.

[0233] The nail magazine device shown in FIG. 1-11 includes a side wall 400 , a movable component 200 , a cover 300 and a push member 500 .

[0234] The direction from the tail cover 306 toward the push member 500 is the forward direction, the direction from the push member 500 toward the tail cover 306 is the backward direction, the direction from the side wall 400 toward the cover 300 is the left direction, the direction from the cover 300 toward the side wall 400 is the right direction, the upward direction along the paper is the upward direction, and the downward direction along the paper is the downward direction.

[0235] The upper and lower edges of the side wall 400 have an upper folding edge and a lower folding edge that are bent to the left and are generally groove-shaped. The upper folding edge has an upper groove 401 and an upper slide 403. The lower folding edge has a lower groove 402 and a lower slide 404. The upper groove 401 corresponds to the lower groove 402. The upper slide 403 corresponds to the lower slide 404. The left side of the side wall 400 is provided with a hole at each of the four vertices of the rectangle, and a guide column and a first elastic element 201 that is sleeved on the guide column are provided in the hole. The first elastic element 201 is a helical compression spring. A bolt is connected to the side wall 400 as a first stop pin 405, and the first stop pin 405 extends into the nail magazine 100.

[0236] The movable member 200 is plate-shaped and has a first side surface (right side surface) and a second side surface (left side surface). The upper edge 202 of the movable member is located in the upper retaining groove 401, and the lower edge 203 of the movable member is located in the lower retaining groove 402. The width of the upper retaining groove 401 is greater than the thickness of the upper edge 202 of the movable member, and the width of the lower retaining groove 402 is greater than the thickness of the lower edge 203 of the movable member, so that the movable member 200 can move left and right and constrain the movement of the movable member 200. The movable member 200 is provided with guide holes, and the guide posts are inserted into the guide holes one by one to guide the left and right movement of the movable member 200, while limiting the movement of the movable member 200 in the front, back, and up and down directions. The side surface (left side surface) of the movable member 200 facing the nail magazine 100 is distributed with a plurality of first grooves 204 extending in the front and back directions.

[0237] The cover 300 is a plate-shaped member having left and right sides. The upper edge 301 of the cover is positioned within an upper slot 403, while the lower edge 302 of the cover is positioned within a lower slot 404. The cover 300 is thereby slidably assembled to the sidewall 400 to open and close the staple cartridge 100. The movable member 200 is positioned between the cover 300 and the sidewall 400. The first end (left end) and second end (right end) of the first elastic element 201 are supported by the movable member 200 and the sidewall 400, respectively, exerting an elastic force on the movable member 200 to the left, toward the cover 300. The movable member 200 and the cover 300 define the staple cartridge 100, which has an outlet 101 at its front end. The width W of the staple cartridge 100 is the minimum gap between the movable member 200 and the cover 300 in the left-right direction. This width is defined by the movable member 100 and the cover 300, and is adjustable through the movement of the movable member 200. Moreover, the elastic force exerted by the first elastic element 201 on the movable member 200 urges the movable member 200 to move closer to the cover 300 .

[0238] A plurality of second grooves 307 extending in the front-to-back direction are distributed on the side (right side) of the cover 300 facing the nail magazine 100. The first grooves 204 correspond to the second grooves 307 one-to-one. When the nails 800 are placed in the nail magazine 100, the heads of the nails 800 are located in the corresponding first grooves 204 and second grooves 307 to avoid jamming.

[0239] The main body of the pusher 500 is plate-shaped. Positioned within the staple cartridge 100, the pusher 500 utilizes the elastic force of the second elastic element 501 to apply a spring force to the staples 800 within the staple cartridge 100, pushing them forward. The pusher 500 is mounted on the cover 300 and moves with it. Rearward movement of the cover 300 opens the staple cartridge 100, while forward movement closes the staple cartridge 100.

[0240] The cover 300 has two receiving holes 303 extending forward and backward. The second elastic element 501 is a helical compression spring placed within the receiving holes 303. The receiving holes 303 have a slit 304 that connects to the staple cartridge. The push member 500 has legs 502 that extend through the slit 304 into the receiving holes 303 to receive the elastic force of the second elastic element 501. Specifically, the elastic force of the second elastic element 501 is applied to the legs 502 via a push post 503 located within the receiving holes 303. The front end of the push post 503 is clipped onto the legs 502, while the rear end of the push post 503 is encased by the second elastic element 501.

[0241] The front portion of the cover 300 is provided with a second stop pin 305 that passes through the receiving hole 303. The rear portion of the cover 300 is provided with a tail cover 306. The second elastic element 501 and the leg 502 of the push member 500 are positioned between the second stop pin 305 and the tail cover 306. Furthermore, when the cover 300 is moved forward, the tail cover 306 abuts against the rear end of the side wall 400, preventing the cover 300 from further moving forward, thereby positioning the cover 300. Simultaneously, the first stop pin 405 blocks the push member 500 from moving backward, preventing the cover 300 from sliding backward off the side wall 400. Thus, while the cover 300 can move forward and backward relative to the side wall 400, it cannot separate from the side wall 400 and remains assembled with the side wall 400, allowing the user to move the cover 300 forward and backward to open and close the staple cartridge 100 without worry. In other embodiments, the first stop pin 405 can directly prevent the cover 300 from sliding off the side wall 400.

[0242] The front end of the push member 500 is provided with deformed portions 504 that protrude to the left and right sides to increase the profile of the push member 500 in contact with and against the nail gun 800. The deformed portions 504 are located within the first groove 204 and the second groove 307 on either side of the nail magazine 100. The movable member 200 and the cover 300 serve as the two sides of the nail magazine 100.

[0243] The bottom of the nail magazine 100 is provided with a support bar 102 for supporting the gun nails 800 in the nail magazine 100. Moreover, the support bar 102 can be replaced. The support bar 102 is assembled on the lower folding edge of the side wall 400.

[0244] In one embodiment, a nail gun is also provided, as shown in Figures 12-13, including a gun body 600 and the nail magazine device 700 as described above, the gun body 600 has a strike chamber 601, the nail magazine device 700 is assembled on the gun body 700, and the outlet 101 of the nail magazine 100 docks with the strike chamber 601.

[0245] The nail magazine device 700 is used to push the nails 800 into the striking cavity 601 to achieve continuous nailing.

[0246] As shown in Figures 12-13, the nail magazine device 700 shown in Figures 1-11 is applied to the gun body 600 to form a nail gun. The gun body 600 has a striking cavity 601. The nail magazine device 700 fixes the side wall 400 to the gun body 600 by fasteners such as bolts, and the outlet 101 of the nail magazine docks with the striking cavity 601. When nailing, the nail magazine device 700 pushes the nail 800 into the striking cavity 601 through the outlet 101.

[0247] The cover 300 is locked in place, covering the staple cartridge 100, by an unlockable locking mechanism. The locking mechanism comprises a hook 602 provided on the gun body 600 and a protrusion 308 provided on the tail cover. The hook 602, acting as a spring, engages the protrusion 308, as shown in FIG13 , locking the cover 300 in place, covering the staple cartridge 100. To load staples 800 into the staple cartridge 100, the other end of the hook 602 is pressed to disengage it from the protrusion 308. This allows the cover 300 to slide rearward, simultaneously moving the pusher 500 rearward to expose the staple cartridge 100. The desired staples 800 (often in a row) can then be placed into the cartridge 100. The cover 300 is then slid forward until the hook 602 engages the protrusion 308, locking the cover 300 in place. During the process of moving the cover 300 forward, the second elastic element 501 is compressed, exerting a forward elastic force on the nails 800 . As the nails are driven one by one, the nails 800 in the nail magazine 100 are also pushed into the striking cavity 601 one by one.

[0248] The nail magazine device configures the width of the nail magazine to be adaptively changed according to the wire diameter of the nails, so that nails of different wire diameters can be placed in the same nail magazine and pushed forward smoothly through the same pushing member.

[0249] The nail magazine device simplifies the structure, solves the problem of mis-installation of nails, has a simple structure, and does not require high product precision. Users can purchase a nail gun that can be used with at least two wire diameters of nails, which can greatly save usage costs.

[0250] In one embodiment, as shown in Figures 31-44, a driving device 20 is configured to drive the lifting wheel 120 in a first direction (clockwise) during a first period to lift the gun needle 110, and to drive the air pump 50 in a second direction (counterclockwise) during a second period different from the first period to inflate the air cylinder 30.

[0251] During the second period, the air pump 50 inflates the sealed chamber 320 in the cylinder 30 to form a gas spring; during the first period, the lifting wheel 120 lifts the gun needle 110, and each time the lifting wheel 120 rotates one circle, it lifts and releases the gun needle 110 once, and nails once.

[0252] In one embodiment, the driving device 20 includes a motor 210 , a first transmission device 220 , and a second transmission device 230 .

[0253] The motor 210 has a first output end 2101 and a second output end 2102 . The first output end 2101 and the second output end 2102 of the motor 210 are respectively located at two ends of the shaft of the motor 210 , and the first output end 2101 and the second output end 2102 have the same direction of rotation.

[0254] The first transmission device 220 is disposed between the first output end 2101 of the motor 210 and the lifting wheel 120. The first transmission device 220 includes a first one-way rotation mechanism. The first transmission device 220 is configured such that: when the first output end 2101 rotates in a first direction, the first output end 2101 drives the lifting wheel 120 via the first transmission device 220; and when the first output end 2101 rotates in a second direction, the first one-way rotation mechanism disengages the first output end 2101 from driving the lifting wheel 120.

[0255] The second transmission device 230 is arranged between the second output end 2102 of the motor 210 and the air pump 50. The second transmission device 230 includes a second one-way rotation mechanism. The second transmission device 230 is configured as follows: when the second output end 2102 rotates in the second direction, the second output end 2102 drives the air pump 50 through the second transmission device 230; and when the second output end 2102 rotates in the first direction, the second one-way rotation mechanism disengages the second output end 2102 from driving the air pump 50.

[0256] The first transmission device 220 also includes a first reduction mechanism. The lifting wheel 120, the first reduction mechanism, the first one-way rotation mechanism and the first output end 2102 are coaxially arranged. The first reduction mechanism is a planetary gear mechanism with the input end and the output end coaxially arranged. The first one-way rotation mechanism is a ratchet and pawl mechanism.

[0257] In one embodiment, the first one-way rotation mechanism includes a first ratchet and pawl mechanism 2210, and the first ratchet and pawl mechanism 2210 is configured as follows: when the first output end 2101 rotates in a first direction, the first ratchet and pawl mechanism 2210 can engage to drive the lifting wheel 120; and when the first output end 2101 rotates in a second direction, the first ratchet and pawl mechanism 2210 can idle to disengage the drive of the first output end 2101 on the lifting wheel 120.

[0258] In one embodiment, the first one-way rotation mechanism also includes a second ratchet and pawl mechanism 2220, and the second ratchet and pawl mechanism 2220 is configured as follows: when the first output end 2101 rotates in a first direction and the first output end 2101 drives the lifting wheel 120 through the first transmission device 220, the second ratchet and pawl mechanism 2220 can idle; and when the lifting wheel 120 rotates in a second direction, the second ratchet and pawl mechanism 2220 engages to prevent the lifting wheel 120 from rotating in the second direction.

[0259] The second transmission device 230 also includes a second reduction mechanism and a flywheel 240. The flywheel 240 is configured to drive the air pump 50 to inflate the cylinder 30. The axis of the flywheel 240 is located below the axis of the second output end 2102. The second reduction mechanism is an off-axis gear transmission mechanism, and the second one-way rotation mechanism is a ratchet and pawl mechanism.

[0260] The second transmission device 230 includes a heteroaxial gear transmission mechanism 2310 and a third ratchet and pawl mechanism 2320 that transmit power sequentially from the second output end 2102 to the flywheel 240. The third ratchet and pawl mechanism 2320 is configured as follows: when the second output end 2102 rotates in the second direction, the second output end 2102 drives the flywheel 240 via the second transmission device 230; and when the second output end 2102 rotates in the first direction, the third ratchet and pawl mechanism 2320 disengages the drive of the second output end 2102 on the flywheel 240.

[0261] In one embodiment, as shown in FIGS. 14-16 , an electric nail gun includes a needle lifting mechanism 10 , a driving device 20 , an air cylinder 30 , a nail magazine 40 , an air pump 50 , and a handle 60 .

[0262] The direction from the power supply 610 toward the cylinder 30 is the forward direction, the direction from the cylinder 30 toward the power supply 610 is the backward direction, the direction from the drive device 20 toward the nail magazine 40 is the left direction, the direction from the nail magazine 40 toward the drive device 20 is the right direction, the upward direction along the paper is the upward direction, the downward direction along the paper is the downward direction, the clockwise direction observed from the flywheel 240 toward the lifting wheel 120 is the clockwise direction, and the counterclockwise direction observed from the flywheel 240 toward the lifting wheel 120 is the counterclockwise direction.

[0263] The gun needle lifting mechanism 10 is used to lift the gun needle 110 upward and compress the gas spring. Its specific structure is described in detail below.

[0264] As shown in Figures 31-32, the motor 210, the first transmission device 220, and the second transmission device 230 constitute the drive device 20. The motor 210 is used to drive the lifting wheel 120 and the air pump 50 to inflate the gas spring. Specifically, the motor 210 is configured for bidirectional rotation. The output shaft at the front end of the motor 210 drives the lifting wheel 120 through the first transmission device 220, while the output shaft at the rear end of the motor 210 drives the air pump 50 through the flywheel 240 through the second transmission device 230. The first transmission device 220 and the second transmission device 230 are configured so that when the motor 210 rotates in either direction, one of the lifting wheel 120 and the air pump 50 is driven while the other is decoupled. That is, when the lifting wheel 120 is driven, the air pump 50 is not driven, and vice versa. The first transmission device 220 and the second transmission device 230 are mechanical transmission structures.

[0265] A first piston 310 is housed within the cylinder 30. The needle 110 is connected to the first piston 310 and extends downward. A gas spring is located above the first piston 310, pushing it downward. When the lifting wheel 120 lifts the needle 110 upward, the first piston 310 moves upward and compresses the gas spring. When the lifting wheel 120 releases the needle 110, the gas spring applies a spring force to the first piston 310, causing the first piston 310 to move the needle 110 downward, thereby driving the nail.

[0266] The nail magazine 40 is used to store nails 410 and transport the stored nails 410 to the gun nozzle 420 at the lower end position of the gun needle 110.

[0267] As shown in Figures 31-33, the air pump 50 is used to charge the sealed cavity 320 with compressed air through the air tube 510. The air pump 50 includes a second piston 531, which is equipped with a connecting rod 532. The connecting rod 532 is eccentrically connected to the flywheel 240. When the air pump 50 is in operation, the sealed cavity 320 is inflated through the air tube 510. The compressed air injected into the sealed cavity 320 by the air pump 50 forms a gas spring, and the compressed air in the sealed cavity 320 is released through the exhaust port 330 to eliminate the gas spring. In other structures, the sealed cavity 320 can be formed on the upper side of the first piston 310, and the sealed cavity 320 can be permanently sealed with compressed gas to form a gas spring.

[0268] The handle 60 is used for the user to hold the nail gun, and a replaceable or rechargeable power supply 610 is configured at the rear end of the handle 60. A nailing switch 620 is configured at the lower side of the handle 60.

[0269] The driving device 20 provides power for the electric nail gun. It is used to drive the flywheel 240 to rotate to inflate the sealed chamber 320 of the air cylinder 30 with the air pump 50 to form a gas spring, and is also used to drive the lifting wheel 120 to promote the gun needle 110 and compress the gas spring.

[0270] The needle lift mechanism 10, drive unit 20, cylinder 30, air pump 50, and handle 60 are integrated into the body 70, which is embodied as a cohesive housing. The nail magazine 40 is detachably mounted on the body 70. Specifically, the handle 60 extends from the sidewall of the cylinder 30 directly behind it. The drive unit 20 and nail magazine 40 are located to the left and right of the center plane of the handle 60 and cylinder 30, aligning the center of mass of the entire nail gun as closely as possible to its geometric center. This ensures a comfortable grip regardless of the user's posture, without causing excessive weight.

[0271] The lifting wheel 120 and the gun needle 111 are tangentially arranged, similar to the meshing of a gear and a rack. The air pump 50 is located at an end of the driving device 20 away from the lifting wheel 120.

[0272] The nail gun also includes a controller (not shown) for switching the direction of the motor 210. When the nail gun is initially used, the motor 210 is controlled to operate in the second direction (counterclockwise), causing the second output end 2102 to first drive the flywheel 240, which in turn drives the air pump 50 to fill the sealed chamber 320 with compressed air to form a gas spring. The motor 210 is then controlled to operate in the first direction (clockwise), causing the first output end 2101 to drive the lifting wheel 120, which lifts the needle 110 and the first piston 310, and compresses the gas spring. The first direction of rotation is opposite to the second direction of rotation. The control of the motor 210 in the first direction of rotation is controlled by the nailing switch 620. That is, only by operating (e.g., flipping or pressing) the nailing switch 620 can the motor 210 operate in the first direction of rotation. Furthermore, the lifting wheel 120 lifts the gun needle 110 to a predetermined position and then releases the gun needle 110 . The gas spring then applies force to the first piston 310 to push the gun needle 110 to drive the nail.

[0273] The lifting wheel 120 has a missing portion 1201. Distributed along its circumference are several lifting sections 121, which are pins attached to the lifting wheel 120. The missing portion lacks a pin. The side of the needle 110 has a row of teeth 111, with the number of teeth 111 corresponding to the number of lifting sections 121. When the lifting wheel 121 rotates forward, the lifting sections 121 mesh with the teeth 111 one by one, similar to the meshing of a gear and a rack, lifting the needle 110. Simultaneously, the first piston 310 compresses the gas spring until the needle 111 reaches its highest position, as shown in FIG16 . As the lifting wheel 120 rotates, it moves to the position where the missing portion 1201 (shown in Figure 17) corresponds to the needle 110. Because the lifting portion 121 is no longer engaged with the teeth 111, the lifting wheel 120 releases the needle 110. The gas spring acts to rapidly lower the needle 110 and the first piston 310 from its highest position to its lowest position (shown in Figure 18) for nailing. The lifting wheel 120 continues to rotate, and after the missing portion 1201 passes the needle 110, the needle 110 is lifted again. As the lifting wheel 120 rotates, the needle 110 reciprocates up and down, repeatedly driving nails.

[0274] The nail gun includes a pressure sensor for detecting the pressure in the sealed chamber 320 or the air pump 50. The pressure sensor is connected to a controller. After the air pump 50 fills the sealed chamber 320 with compressed air to a set value, the controller switches the motor 210 to the first rotational direction. The set value for the compressed air in the sealed chamber 320 is set by the controller.

[0275] The drive device 20 uses a motor 210 to power the lifting wheel 120 and the flywheel 240. By means of a first unidirectional rotation mechanism and a second unidirectional rotation mechanism, when the first output end 2101 and the second output end 2102 of the motor 210 simultaneously output torque, one of the lifting wheel 120 and the flywheel 240 is driven while the other is decoupled. Specifically, when the lifting wheel 120 is driven, the flywheel 240 is not driven, and vice versa.

[0276] Therefore, as shown in Figures 31-36, a driving device 20 includes a motor 210, a lifting wheel 120, a first transmission device 220, a flywheel 240, and a second transmission device 230.

[0277] The motor 210 has a first output terminal 2101 and a second output terminal 2102. The first output terminal 2101 and the second output terminal 2102 have the same rotational direction. Because the connecting rod 532 is eccentrically connected to the flywheel 240, the rotation of the flywheel 240 drives the air pump 50 to inflate the sealed chamber 320. Therefore, the driving of the air pump 50 does not require the rotational direction of the flywheel 240 and the second output terminal 2102.

[0278] The lifting wheel 120 is used to lift the needle 110 and compress the gas spring as previously described.

[0279] The first transmission device 220 is arranged between the first output end 2101 of the motor 210 and the lifting wheel 120. The first transmission device 220 includes a first unidirectional rotation mechanism. When the first output end 2101 rotates in one direction, the first output end 2101 drives the lifting wheel 120 with the help of the first transmission device 220. When the first output end 2101 rotates in the other direction, the first unidirectional rotation mechanism disengages the first output end 2101 from driving the lifting wheel 120.

[0280] The flywheel 240 is used to drive the air pump 50 as described above.

[0281] The second transmission device 230 is configured between the second output end 2102 of the motor 210 and the flywheel 240. The second transmission device 230 includes a second one-way rotation mechanism. When the second output end 2102 rotates in one direction, the second output end 2102 drives the flywheel 240 via the second transmission device 230. When the second output end 2102 rotates in the other direction, the second one-way rotation mechanism disengages the second output end 2102 from driving the flywheel 240.

[0282] The first unidirectional rotation mechanism and the second unidirectional rotation mechanism are configured so that when the first output end 2101 and the second output end 2102 of the motor 210 simultaneously output torque, one of the lifting wheel 120 and the flywheel 240 is driven and the other is decoupled.

[0283] The first transmission device 220 includes a first reduction mechanism. The lifting wheel 120, the first reduction mechanism, the first one-way rotation mechanism and the first output end 2101 are coaxially arranged.

[0284] The first reduction mechanism is a planetary gear mechanism with an input end and an output end coaxially arranged, and includes a first planetary gear mechanism 2230 , a second planetary gear mechanism 2240 , and a third planetary gear mechanism 2250 .

[0285] The first one-way rotation mechanism is a ratchet and pawl mechanism. The first one-way rotation mechanism includes a first ratchet and pawl mechanism 2210 and a second ratchet and pawl mechanism 2220. The first ratchet and pawl mechanism 2210 is located adjacent to the first output end 2101, while the second ratchet and pawl mechanism 2220 is located adjacent to the lifting wheel 120. The first ratchet and pawl mechanism 2210 is configured such that when the first output end 2101 rotates in one direction, the first ratchet and pawl mechanism 2210 engages to allow the first output end 2101 to drive the lifting wheel 120. When the first output end 2101 rotates in the other direction, the first ratchet and pawl mechanism 2210 idles, disengaging the first output end 2101 from driving the lifting wheel 120. The second ratchet and pawl mechanism 2210 idles when the first output end 2101 drives the lifting wheel 120 via the first transmission device 220, and engages when the lifting wheel 120 rotates in the opposite direction, preventing the lifting wheel 120 from rotating in the opposite direction. According to this, the lifting wheel 120 and the flywheel 240 rotate in different time periods instead of simultaneously, so as to realize inflation and nailing respectively.

[0286] Specifically, the first transmission device 220 includes a first planetary gear mechanism 2230, a second planetary gear mechanism 2240, a first ratchet and pawl mechanism 2210 and a third planetary gear mechanism 2250, which transmit power from the first output end 2101 to the lifting wheel 120 in sequence; the first ratchet and pawl mechanism 2210 is arranged at the output end of the second planetary gear mechanism 2240, and the second ratchet and pawl mechanism 2220 is arranged at the output end of the third planetary gear mechanism 2250.

[0287] The first planetary gear mechanism 2230 includes a first input gear 2231, first planetary gears 2232, a first output member 2233, and a first ring gear 2234. The first ring gear 2234 is fixed to the housing outside of the first input gear 2231. The first planetary gears 2232 are pivotally mounted on the first output member 2233 via pins and mesh with the first input gear 2231 and the first ring gear 2234. The first output member 2233 functions as a planet carrier for the first planetary gears 2232. The first input gear 2231 and the first output end 2101 are keyed together to achieve transmission assembly. This allows the rotation of the first output end 2101 to be transmitted to the first output member 2233 in the same direction at reduced speed.

[0288] Second planetary gear mechanism 2240 includes a second input gear 2241, second planetary gears 2242, a second output member 2243, and a second ring gear 2244. Second ring gear 2244 is fixed to the housing outside of the second planetary gear mechanism. Second planetary gears 2242 are pivotally mounted on second output member 2243 via pins and mesh with second input gear 2241 and second ring gear 2244. Second output member 2243 functions as a planet carrier for second planetary gears 2242. Second input gear 2241 is integrally mounted on first output member 2233. Consequently, the rotation of first output member 2233 can be transmitted to second output member 2243 in the same direction at reduced speed.

[0289] The first ratchet and pawl mechanism 2210 includes a first ratchet housing 2211 and a first pawl 2212. The first ratchet housing 2211 is rotatably mounted, and a first one-way tooth groove 2213 is defined on the inner wall of the first ratchet housing 2211. The first pawl 2212 is mounted on the second output member 2243 via a pin and rests on the inner wall of the first ratchet housing 2211 via a first spring 2214. Based on the direction of the first one-way tooth groove 2213, when the second output member 2243 rotates in a first direction (clockwise), the first pawl 2212 engages with the first one-way tooth groove 2213, pushing the first ratchet housing 2211 to rotate in the first direction (clockwise). When the second output member 2243 rotates in the second direction (counterclockwise), the first pawl 2212 slides on the inner wall of the first ratchet sleeve 2211, the first ratchet and pawl mechanism 2210 idles, and the first ratchet sleeve 2211 stops and does not transmit rotation.

[0290] The third planetary gear mechanism 2250 includes a third input gear 2251, third planetary gears 2252, a third output member 2253, and a third ring gear 2254. The third ring gear 2254 is fixed to the outer housing. The third planetary gears 2252 are pivotally mounted on the third output member 2253 via pins and mesh with the third input gear 2251 and the third ring gear 2254. The third output member 2253 functions as a planet carrier for the third planetary gears 2252. The third input gear 2251 is integrally mounted on the first ratchet housing 2211. The third output member 2253 is assembled with the lifting wheel 120 via a spline transmission. Consequently, rotation of the first ratchet housing 2211 in the first direction (clockwise) is transmitted to the third output member 2253 in the same direction at a reduced speed, causing the third output member 2253 to rotate the lifting wheel 120 in the first direction (clockwise).

[0291] The second ratchet and pawl mechanism 2220 includes a second ratchet housing 2221 and a second pawl 2222. The second ratchet housing 2221 is fixed to the housing outside the second ratchet housing. A second one-way tooth groove 2223 is defined on the inner wall of the second ratchet housing 2221. The second pawl 2222 is mounted on the third output member 2253 via a pin and rests on the inner wall of the second ratchet housing 2221 via a second spring 2224. Based on the direction of the second one-way tooth groove 2223, when the third output member 2253 rotates in the first direction (clockwise), the second pawl 2222 slides on the inner wall of the second ratchet housing 2221, causing the second ratchet and pawl mechanism 2220 to idle. The third output member 2253 then rotates the lifting wheel 120, thereby raising the needle 110. When the motor 210 stops working, the gun needle 110 is lifted to the highest position as described above. At this time, the gun needle 110 has a downward trend due to the action of the gas spring, and the lifting wheel 120 is prompted to generate a second rotation trend (counterclockwise). This rotation trend is transmitted to the third output member 2253, which causes the second pawl 2222 to engage with the second one-way tooth groove 2223, thereby preventing this rotation and thus preventing the gun needle 110 from descending, thereby keeping the gun needle 110 in a high position.

[0292] The second transmission device 230 includes a second reduction mechanism. The axis of the flywheel 240 is located below the axis of the second output end 2102, and the air pump 50 is located above the flywheel 240. Furthermore, the second reduction mechanism is a non-axial gear transmission mechanism, and the second one-way rotation mechanism is a ratchet and pawl mechanism. Specifically, the second transmission device 230 includes a non-axial gear transmission mechanism 2310 and a third ratchet and pawl mechanism 2320, which sequentially transmit power from the second output end 2102 to the flywheel 240. The third ratchet and pawl mechanism 2320 is configured such that when the second output end 2102 rotates in one direction, the second output end 2102 drives the flywheel 240 via the second transmission device 230. When the second output end 2102 rotates in the other direction, the third ratchet and pawl mechanism 2320 disengages the second output end 2102 from driving the flywheel 240.

[0293] The off-axis gear transmission mechanism 2310 includes a meshing driving gear 2311 and a driven gear 2312 . The driving gear 2311 is set at the second output end 2102 through a key, and the driven gear 2312 is located below the driving gear 2311 .

[0294] The third ratchet and pawl mechanism 2320 includes a third ratchet sleeve 2321, a third rotating body 2322 and a third pawl 2323. The third ratchet sleeve 2321 is integrally arranged at the rear end of the driven gear 2312. The inner wall of the third ratchet sleeve 2321 is provided with a third one-way tooth groove 2324. The third rotating body 2322 is arranged at the front end of the flywheel 240. The third pawl 2323 is swingably arranged on the third rotating body 2322 through a pin shaft and relies on the inner wall of the third ratchet sleeve 2321 by means of a third spring 2325. Based on the direction of the third one-way tooth groove 2324, when the second output end 2102 rotates together with the first output end 2101 in the first direction (clockwise), the driven gear 2311 rotates counterclockwise, the inner wall of the third ratchet housing 2321 slides with the third pawl 2323, and the third ratchet and pawl mechanism 2320 idles. The second output end 2102 does not drive the flywheel 240, and the air pump 50 does not operate. Conversely, when the second output end 2102 rotates together with the first output end 2101 in the second direction (counterclockwise), the driven gear 2312 rotates clockwise, the third one-way tooth groove 2324 on the inner wall of the third ratchet housing 2321 pushes the third pawl 2323 to rotate counterclockwise, and the third ratchet and pawl mechanism 2320 engages. The third rotating body 2322 rotates together with the flywheel 240, and the second output end 2102 drives the flywheel 240, causing the air pump 50 to operate.

[0295] As shown in Figures 37-42, another drive device 20 has the same functions as the drive device 20 shown in Figures 32-36. Its structure differs from the drive device 20 shown in Figures 32-36 in the following three aspects: first, the method for switching the motor direction; second, the pressure control method of the gas spring; and third, the structure of the drive device. The remaining structure is the same as the drive device 20 shown in Figures 32-36. The differences are described below, and the similarities are not repeated here.

[0296] First, in the driving device 20 shown in Figures 37-42, the body is provided with a switch for controlling the motor 210 to work in the first direction or the second direction, thereby replacing the automatic control of the controller in the driving device 20 shown in Figures 32-36.

[0297] Secondly, the nail gun includes a pressure gauge 325 for detecting the pressure of the sealed chamber 320 or the air pump 50. It is convenient to check the air pressure when the sealed chamber 320 is inflated and during use.

[0298] Third, the driving device 20 shown in Figures 37-42 is different from the driving device 20 shown in Figures 32-36 in terms of the first transmission device 220 and the second transmission device 220.

[0299] The first transmission device 220 includes a first ratchet and pawl mechanism 2210, a first planetary gear mechanism 2230, a second planetary gear mechanism 2240, and a third planetary gear mechanism 2250 that sequentially transmit power from the first output end 2101 to the lifting wheel 120, and the second ratchet and pawl mechanism 2220 is arranged at the output end of the first planetary gear mechanism 2230.

[0300] The first ratchet and pawl mechanism 2210 includes a first ratchet housing 2211, a first rotating body 2215, and a first pawl 2212. The first ratchet housing 2211 is rotatably mounted, and a first one-way tooth groove 2213 is provided on the inner wall of the first ratchet housing 2211. The first rotating body 2215 is keyed to the first output end 2101. The first pawl 2212 is swingably mounted on the first rotating body 2215 via a pin and rests on the inner wall of the first ratchet housing 2211 via a first spring 2214. Depending on the direction of the first one-way tooth groove 2213, when the first output end 2101 rotates in a first direction (clockwise), the first rotating body 2215 rotates accordingly, and the first pawl 2212 engages with the first one-way tooth groove 2213, pushing the first ratchet housing 2211 to rotate in the first direction (clockwise). When the first output end 2101 rotates in the second direction (counterclockwise), the first rotating body 2215 rotates accordingly, the first pawl 2212 slides on the inner wall of the first ratchet sleeve 2211, the first ratchet and pawl mechanism 2210 rotates idly, and the first ratchet sleeve 2211 is stationary and does not transmit rotation.

[0301] The first planetary gear mechanism 2230 includes a first input gear 2231, first planetary gears 2232, a first output member 2233, and a first ring gear 2234. The first input gear 2231 is integrally mounted on the first ratchet housing 2211, while the first ring gear 2234 is fixed to the housing outside the first input gear 2231. The first planetary gears 2232 are mounted on the first output member 2233 via pins and mesh with the first input gear 2231 and the first ring gear 2234. The first output member 2233 functions as a planet carrier for the first planetary gears 2232. Consequently, the first input gear 2231 rotates in the same direction as the first ratchet housing 2211, transmitting reduced power to the first output member 2233.

[0302] Second planetary gear mechanism 2240 includes a second input gear 2241, second planetary gears 2242, a second output member 2243, and a second ring gear 2244. Second input gear 2241 is integrally mounted on first output member 2233, while second ring gear 2244 is fixed to the housing. Second planetary gears 2242 are mounted on second output member 2243 via pins and mesh with second input gear 2241 and ring gear 2244. Second output member 2243 functions as a planet carrier for second planetary gears 2242. Consequently, second input gear 2241 rotates in the same direction as first output member 2233, transmitting reduced power to second output member 2243.

[0303] The second ratchet and pawl mechanism 2220 includes a second ratchet housing 2221 and a second pawl 2222. The second ratchet housing 2221 is fixedly mounted on a housing outside the second ratchet housing. A second output member 2243 extends into the second ratchet housing 2221 and maintains a first gap 2225 with the inner wall of the second ratchet housing 2221. The first gap 2225 gradually increases in one direction and gradually decreases in the other direction. The second pawl 2222 is roller-shaped and located within the first gap 2225. As shown in FIG43 , when the second output member 2243 rotates relative to the second ratchet housing 2221 in the direction in which the first gap 2225 gradually decreases (a first direction, a clockwise direction), the second pawl 2222 is located at the end of the first gap 2225 that gradually increases, and remains free within the first gap 2225, allowing the second output member 2243 to rotate in that direction. As shown in FIG44 , when the second output member 2243 rotates relative to the second ratchet housing 2221 in the direction in which the first gap 2225 gradually increases (the second direction, counterclockwise), the second pawl 2222 is squeezed between the second output member 2243 and the inner wall of the second ratchet housing 2221, engaging the second pawl 2222 and preventing the second output member 2243 from rotating in this direction. When the motor 210 stops, the needle 110 is raised to its highest position as described above. At this time, the gas spring causes the needle 110 to descend, forcing the lifting wheel 120 to rotate in the second direction (counterclockwise). This rotational tendency is transmitted to the second output member 2243, and the second ratchet and pawl mechanism 2220 assumes the position shown in FIG44 , preventing this rotation, thereby preventing the needle 110 from descending and maintaining it in the elevated position.

[0304] The third planetary gear mechanism 2250 includes a third input gear 2251, third planetary gears 2252, a third output member 2253, and a third ring gear 2254. The third input gear 2251 is integrally mounted on the second output member 2243, while the third ring gear 2254 is fixed to the housing outside the second output member 2243. The third planetary gears 2252 are pin-mounted on the third output member 2253 and mesh with the third input gear 2251 and the third ring gear 2254. The third output member 2253 functions as a planet carrier for the third planetary gears 2252. The third output member 2253 is assembled with the lifting wheel 120 via a spline transmission. Consequently, the third input gear 2251 rotates in the first direction (clockwise) with the second output member 2243, transmitting power to the third output member 2253 in the same direction at a reduced speed. The third output member 2253 then rotates the lifting wheel 120 in the first direction (clockwise) to lift the needle 110.

[0305] The second transmission device 230 includes a third ratchet and pawl mechanism 2320 and a heteroaxial gear transmission mechanism 2310 that transmit power from the second output end 2102 to the flywheel 240 in sequence. The third ratchet and pawl mechanism 2320 is configured so that when the second output end 2102 rotates in one direction, the second output end 2102 drives the flywheel 240 through the second transmission device 230; and when the second output end 2102 rotates in another direction, the third ratchet and pawl mechanism 2320 disengages the drive of the flywheel 240 by the second output end 2102.

[0306] The third ratchet and pawl mechanism 2320 includes a third rotating body 2322, a third pawl 2323, and a third ratchet housing 2321. The third rotating body 2322 is mounted on the second output end 2102 via a key. The third ratchet housing 2321 is rotatably mounted. A third one-way tooth groove 2324 is provided on the inner wall of the third ratchet housing 2321. The third pawl 2323 is pivotally mounted on the third rotating body 2322 via a pin and rests on the inner wall of the third ratchet housing 2321 via a third spring 2325. Depending on the direction of the third one-way tooth groove 2324, when the second output end 2102 rotates together with the first output end 2101 in the first direction (clockwise), the third rotating body 2322 rotates along with the second output end 2102. The third pawl 2323 slides on the inner wall of the third ratchet housing 2321. The third ratchet housing 2321 remains stationary and does not rotate, causing the third ratchet and pawl mechanism 2320 to idle. On the contrary, when the second output end 2102 rotates together with the first output end 2101 in the second direction (counterclockwise), the third pawl 2323 is engaged with the third one-way tooth groove 2324, and the third pawl 2323 pushes the third ratchet sleeve 2321 to rotate in the second direction (counterclockwise).

[0307] The off-axis gear transmission mechanism 2310 includes a meshed driving gear 2311 and a driven gear 2312. The driving gear 2311 is integrally mounted on the third ratchet housing 2321, while the driven gear 2312 is positioned below the driving gear 2311. The flywheel 240 is coaxially mounted on the driven gear 2312. Accordingly, when the second output end 2102 rotates in a first direction (clockwise) along with the first output end 2101, the second output end 2102 does not drive the flywheel 240, and the air pump 50 does not operate. When the second output end 2102 rotates in a second direction (counterclockwise) along with the first output end 2101, the driving gear 2311 rotates along with the third ratchet housing 2321, and the driven gear 2312 rotates along with the driving gear 2311, thereby rotating the flywheel 240. The flywheel 240 then drives the air pump 50 to inflate the sealed chamber 320.

[0308] In the above nail gun, according to its first transmission device 220 and second transmission device 230, when the first output end 2101 and second output end 2102 of the motor 210 rotate in the first direction (clockwise), the first output end 2101 drives the lifting wheel 120 via the first transmission device 220 to rotate, thereby lifting the nail needle 110. The second transmission device 2102 disconnects the second output end 2102 from the flywheel 240, and the air pump 50 does not operate. When the first output end 2101 and second output end 2102 of the motor 210 rotate in the second direction (counterclockwise), the second output end 2102 drives the flywheel 240 via the second transmission device 230 to rotate, thereby driving the nail needle 110. The first transmission device 220 disconnects the first output end 2101 from the lifting wheel 120, and the nail needle 110 does not operate. This achieves that a single motor 210 is used to drive both the lifting wheel 120 and the flywheel 240, without interfering with each other.

[0309] To use the nail gun, the motor 210 is first rotated counterclockwise to drive the air pump 50 to inflate the sealed chamber 320. The motor 210 is then switched to clockwise rotation and the nailing switch 620 is flipped to activate the motor 210 for nailing. The switching and control of the motor 210's direction of rotation can be automated by a controller or manually operated using buttons or knobs on the gun body. When the nail gun is not in use, the compressed air in the sealed chamber 320 is exhausted through the exhaust port 330.

[0310] The transmission relationship between the first transmission device 220 and the second transmission device 230 has been described in detail above. However, in actual implementation, the corresponding rotating parts require bearing support. To maintain the pawl and planetary gears in their assembled position, a baffle can be used to cover and restrain the pawl and planetary gears in their assembled position. A rotating sleeve is provided between adjacent relatively rotatable ratchet and pawl mechanisms and planetary gear mechanisms to increase wear resistance.

[0311] In one embodiment, as shown in FIGS. 18-24 , a gun needle lifting mechanism 10 includes a gun needle 110 , a lifting wheel 120 , a movable member 130 and an elastic member 140 .

[0312] The gun needle 110 is provided with teeth 111 along the length direction; the length direction refers to the direction in which the gun needle 110 travels, that is, the up-down direction along the paper in Figures 18-24.

[0313] The lifting wheel 120 includes a first portion and a second portion. The first portion is provided with a lifting portion 121, while the second portion is not provided with the lifting portion 121. The circumference corresponding to the first portion has a first angular range α, while the circumference corresponding to the second portion has a second angular range β. When the lifting wheel 120 rotates to a position corresponding to the teeth 111 within the first angular range α, the lifting portion 121 is configured to engage with the teeth 111 to lift the gun needle 110. When the lifting wheel 120 rotates to a position corresponding to the teeth 111 within the second angular range β, the lifting portion 121 is configured to disengage from the teeth 111 to release the gun needle 110.

[0314] The movable member 130 is assembled on the lifting wheel 120 and is configured to move from a first position to a second position when the lifting wheel 120 rotates to adjust the engagement between the lifting portion 121 and the teeth 111;

[0315] The elastic element is configured to push the movable member 130 to move from the second position to the first position.

[0316] Furthermore, the movable member 130 is assembled on the lifting wheel 120 at the starting end of the first angular range α. The starting end is the end where the lifting portion 121 and the tooth 111 begin to engage with each other in the first angular range α when the lifting wheel 120 rotates to lift the gun needle 110. The movable member 130 has a force-bearing portion 131 and an engaging portion 132.

[0317] The force-bearing portion 131 and the engaging portion 132 are configured as follows:

[0318] When the movable member 130 is located at the first position, the force-bearing portion 131 is located at the resisting position, and the engaging portion 132 deviates from the engaging position.

[0319] When the movable member 130 rotates with the lifting wheel 120 , the force-bearing portion 131 is resisted by the teeth 111 and overcomes the elastic force of the elastic element, causing the movable member 130 to move from the first position to the second position;

[0320] When the movable member 130 is located at the second position, the force-bearing portion 131 deviates from the resisting position, the meshing portion 132 is located at the meshing position, and is in a sequence of meshing with the teeth 111 together with the lifting portion 121 .

[0321] The tooth pitches S between adjacent teeth 111 on the gun needle 110 are equal, and the spacing δ between adjacent lifting portions 121 on the lifting wheel 120 is equal. When the meshing portion 132 is in the meshing position and is in a sequence of meshing with the teeth 111 together with the lifting portions 121, the angular distance θ between the meshing portion 132 and the adjacent lifting portions 121 is equal to the spacing δ between the adjacent lifting portions 121.

[0322] A second gap 123 is formed between the two spaced walls 122 . Both ends of the lifting portion 121 are assembled on the two spaced walls 122 , and a middle portion of the lifting portion 121 is located in the second gap 123 .

[0323] The movable member 130 is pivotally assembled in the second slit 123 via the pin shaft 133 .

[0324] As shown in Figures 45-48, the lifting wheel 120 includes a rotating shaft 127 and a wheel body 128 that rotates with the rotating shaft 127. A grease nozzle 150 is provided on the wheel body 128, and a grease channel 129 is provided in the wheel body 128 from the grease nozzle 150 to the lifting part 121.

[0325] Furthermore, a grease channel 129 is provided in the wheel body 128 , extending from the grease nozzle 150 to the movable part 130 .

[0326] In one embodiment, as shown in FIG. 18-24 , the gun needle lifting mechanism 10 includes a gun needle 110 , a lifting wheel 120 , a movable member 130 , and an elastic element.

[0327] The gun needle 110 has a plurality of teeth 111 distributed along its length.

[0328] The circumference of the lifting wheel 120 includes a first angular range α and a second angular range β. A plurality of lifting portions 121 are distributed in the first angular range α. When the lifting wheel 120 rotates to the teeth 111 corresponding to the first angular range α, the lifting portions 121 engage with the teeth 111 to lift the gun needle 110, so as to lift the gun needle 110 to the high position shown in FIG. 19 . No lifting portion 121 is distributed in the second angular range β. When the lifting wheel 120 rotates to the teeth 111 corresponding to the second angular range β shown in FIG. 20 , the lifting portions 121 disengage from the teeth 111 to release the gun needle 110.

[0329] The movable member 130 is movably assembled on the lifting wheel 120 and is configured to change from a first position to a second position as the lifting wheel 120 rotates to adjust the lifting portion 121 to accurately mesh with the teeth 111.

[0330] The elastic element acts on the movable member 130 to cause the movable member 130 to return from the second position to the first position.

[0331] Specifically, the lifting wheel 120 includes a rotating shaft 127 and a wheel body 128 that rotates with the rotating shaft 127. The wheel body 128 is generally circular, with a circumference of the wheel body 128 encompassing a first angular range α and a second angular range β. The wheel body 128 includes two spaced walls 122, with a second gap 123 formed between the two spaced walls 122. The lifting wheel 120 is provided with an arcuate through-hole 125, through which a rod 126 is inserted. The lifting portion 121 is a pin mounted on the lifting wheel 120. In other configurations, the lifting portion 121 may be a tooth. The ends of the pin are mounted on the two spaced walls 122, and the center of the lifting portion 121 is located in the second gap 123. Furthermore, the pin is movably mounted on the lifting wheel 120 by inserting the pin into a hole 1212 provided in the lifting wheel 120. A cover plate 124 covers the end surface of the lifting wheel 120, which constrains the pin within the hole 1212 of the lifting wheel 120. The edge of the second angular range β of the lifting wheel 120 is concave, meaning that the edge of the second angular range β of the lifting wheel 120 is located inside the contour of the circle defined by the edge of the first angular range α. In other words, the distance between the edge of the second angular range β of the lifting wheel 120 and the center of the lifting wheel 120 is less than the distance between the edge of the first angular range α of the lifting wheel 120 and the center of the lifting wheel 120.

[0332] Specifically, movable member 130 is pivotally mounted in second gap 123 between two spaced walls 122 of lifting wheel 120 via pin 133. Movable member 130 is positioned near the starting end of first angular range α, which is the end of the first angular range α where lifting portion 121 first engages with teeth 111 when lifting wheel 120 rotates to lift needle 110. Movable member 130 includes a force-bearing portion 131 and an engaging portion 132.

[0333] The force-bearing portion 131 and the engaging portion 132 are configured as follows:

[0334] In the rotation direction of the lifting wheel 120 lifting the gun needle 111, that is, in the counterclockwise direction shown in Figures 19-24, the force-bearing portion 131 approaches and leaves the gun needle 110 later than the engaging portion 132, and the force-bearing portion 131 contacts the gun needle earlier than the engaging portion 132.

[0335] Furthermore, when the movable member 130 is in the first position, the force-bearing portion 131 is in the resisting position, and the meshing portion 132 is deviated from the meshing position. When the movable member 130 rotates with the lifting wheel 120, the force-bearing portion 131 is resisted by the teeth 111 and overcomes the elastic force of the elastic element, causing the movable member 130 to move from the first position to the second position. When the movable member 130 is in the second position, the force-bearing portion 131 is deviated from the resisting position, and the meshing portion 132 is in the meshing position and is in meshing sequence with the teeth 111 together with the lifting portion 121. That is, the meshing portion 132 and the lifting portion 121 mesh with the teeth 111 in a one-to-one correspondence. Furthermore, the pitches S of the teeth 111 distributed on the needle 110 are equal (the distance between any two adjacent teeth 111 is equal), the spacing δ between any two adjacent lifting portions is equal (the angular distance is equal), and when the meshing portion 132 is in the meshing position and is in a sequence of meshing with the teeth 111 together with the lifting portion 121, the angular distance θ between the meshing portion 132 and the adjacent lifting portion is equal to the spacing δ between the lifting portions.

[0336] In Figures 25-28, the elastic element includes a first torsion spring 141 and a second torsion spring 142. The first torsion spring 141 and the second torsion spring 142 are separately located at the two ends of the lifting wheel 120 and are positioned on the rotating shaft 127 of the lifting wheel 120. The first torsion spring 141 and the second torsion spring 142 are symmetrical and one end of them is hooked in the hole on the lifting wheel 120, and the other end is against the end of the rod 126, so that the elastic element acts on the rod 126 to make the rod 126 apply elastic force to the movable part 130.

[0337] In other structures, the elastic element can be a tension spring 143 as shown in Figure 30, with the ends of the tension spring 143 respectively connected to the lifting wheel 120 and the movable member 130. The elastic element can also be a compression spring 144 as shown in Figure 31, with the ends of the compression spring 144 respectively supported by the lifting wheel 120 and the movable member 130.

[0338] According to the nail gun structure described above, during operation, the motor 210 is first started to rotate in one direction. The second transmission device 230 drives the air pump 50 to inflate the sealed chamber 320, forming a gas spring. When the inflation pressure reaches a set level, inflation stops. During inflation, the motor 210, via the first transmission device 220, disengages the lifting wheel 120, preventing it from rotating. Subsequently, the motor 210 is rotated in the other direction, and the first transmission device 220 drives the lifting wheel 120 to rotate counterclockwise as shown in Figures 19-24. The lifting wheel 120 lifts the needle 110. Each rotation of the lifting wheel 120 lifts and releases the needle 110, resulting in one nail being driven. During use, the motor 210 can be driven continuously by controlling the nailing switch 620 with a finger, driving the lifting wheel 120 for continuous nailing. Alternatively, the motor 210 can be driven intermittently by controlling the nailing switch 620 with a finger, driving the lifting wheel 120 for intermittent nailing.

[0339] According to the gun needle lifting mechanism 10 described above, the process of lifting the gun needle 110 for nailing is as follows:

[0340] 1. As shown in Figure 19, the gun needle 110 is normally held in a raised position. This allows the gun needle 110 to be lowered once the nailing action is initiated, without having to first raise the gun needle 110 to a high position, thereby improving nailing efficiency. In this position, the lifting portion 121 of the lifting wheel 120, which is within the first angular range α and adjacent to the second angular range β, engages with the lowest tooth on the gun needle 110, holding the gun needle in this position.

[0341] 2. In the state shown in Figure 19, the motor 210 is started, driving the lifting wheel 120 to rotate counterclockwise to the second angle range β shown in Figure 20, corresponding to the tooth 111. The lifting portion 121 disengages from the tooth 111, releasing the needle 110. Under the elastic force of the gas spring, the first piston 310 moves rapidly downward with the needle 110 to the lowest position shown in Figure 21 to drive the nail. As the lifting wheel 120 continues to rotate, the movable member 130 approaches the needle 110. At this point, the movable member 130 is in the first position under the elastic force of the elastic element, the force-bearing portion 131 is in the blocking position, and the engaging portion 132 is deflected from the engaged position. The force-bearing portion 131 is located at the resisting position, where the force-bearing portion 131 is resisted by the teeth 111 on the needle 110 as the lifting wheel 120 rotates, and the meshing portion 132 deviates from the meshing position, where the meshing portion 132 does not mesh with the teeth 111 on the needle 110 as the lifting wheel 120 rotates.

[0342] 3. When the lifting wheel 120 continues to rotate to the position shown in FIG22 , the force-bearing portion 131 is resisted by the teeth 111 and overcomes the elastic force of the elastic element, causing the movable member 130 to move from the first position shown in FIG22 to the second position shown in FIG23 . The movable member swings clockwise. When the movable member 130 is in the second position shown in FIG23 , the force-bearing portion 131 deviates from the resisting position and avoids the teeth 111. The engaging portion 132 is in the engaged position, meshing with the teeth 111 and engaging with the lifting portion 121. In other words, in FIG23 , the engaging portion 132 is engaged with the topmost tooth 111 on the needle 110. The lifting portion 121 adjacent to the engaging portion 132 is engaged with the second tooth 111 on the needle 110 from the top. The remaining lifting portions 121 also engage with the remaining teeth 111 on the needle 110 in a one-to-one correspondence. As the lifting wheel 120 continues to rotate from the position shown in Figure 23, the movable member 130 moves away from the gun needle 110, and the elastic element forces the movable member 130 to return to its first position. The lifting wheel 120 rotates to the position shown in Figure 19, raising the gun needle 110 to a high position. It then rotates to the position shown in Figure 20, releasing the gun needle 110 for nailing. Thus, after the lifting wheel 120 rotates one full rotation from the position shown in Figure 19, through the positions shown in Figures 20-22, and then returns to the position shown in Figure 19, a nailing cycle is completed. Continuous rotation of the lifting wheel 120 allows for continuous nailing.

[0343] During the nailing process, when the gun needle 110 cannot reach the low position shown in FIG. 19 , for example, when the gun needle 110 only drops to about half the length of the gun needle 110 shown in FIG. 24 from the position shown in FIG. 20 , the movable member 130 will also perform the swinging motion shown in FIG. 21-23 as the lifting wheel 120 rotates, and finally reaches the state shown in FIG. 24 where the meshing portion 132 is engaged with the fifth tooth 111 from the top to the bottom of the gun needle 110, and the lifting portion 121 adjacent to the meshing portion 132 is engaged with the sixth tooth 111 from the top to the bottom of the gun needle 110, and the remaining teeth 111 on the gun needle 110 can be kept engaged with part of the lifting portion 121 in a one-to-one correspondence. When the lifting wheel 120 continues to rotate from the state shown in FIG24 , it can lift the gun needle 110 to the high position. However, the first angular range α has not completely rotated past the gun needle 110, and the second angular range β has not yet reached the gun needle 110. The lifting portions 121 within the first angular range α have not yet engaged with the teeth 111, and the gun needle 110 cannot be lowered. If the lifting wheel 120 continues to rotate, the lifting portions 121 within the first angular range α that have not yet engaged with the teeth 111 will gradually engage with the two lowest teeth 111 on the gun needle 110, causing the gun needle 110 to rise and fall slightly at the high position until all the teeth 111 have rotated away from the gun needle 111, the first angular range α has been rotated away from the gun needle 110, and the second angular range β has been rotated to the gun needle 110. The gun needle 110 can then be lowered for nailing. When the needle 110 is slightly raised or lowered at a high position, the lifting portion 121 is precisely engaged with the two lowest teeth 111 on the needle 110. Moreover, since the gas spring is compressible, the slight raising or lowering of the needle 110 at a high position will not cause jamming or damage the structure.

[0344] During the nailing process, the lifting wheel 120 only rotates, and the height of the lifting wheel 120 does not change. Therefore, in Figures 19-24, the height of the gun needle 110 is represented with reference to the lifting wheel 120.

[0345] As described above, each time the lifting wheel 120 rotates one circle, the lifting portion 121 and the movable member 130 thereon engage with the teeth 111 on the needle 110 once. Therefore, the frequency of such engagement is high and lubrication is required. Therefore, a lubrication structure is provided for the needle lifting mechanism 10. As shown in Figures 45-48, the lubrication structure comprises a grease nozzle 150 provided on the lifting wheel 120, and a grease channel 129 distributed within the wheel body 128 from the grease nozzle 150 to the lifting portion 121.

[0346] Specifically, each pin, serving as the lifting portion 121, is located at a grease channel port 1211. An axial groove 1210 is defined on the periphery of the wheel body 128. The grease channel ports 1211 open into the axial groove 1210, communicating with the axial groove 1211. The pins are positioned one by one within their corresponding axial grooves 1210. The periphery of the wheel body 128 is located at the bottom of the second slit 123. The ends of the pins are fitted into two spaced walls 122, with the middle of the pins positioned within the second slit 123. Furthermore, the pins are constrained within the holes 1212 of the lifting wheel 120 by a cover plate 124, allowing them to move within the holes 1212 of the lifting wheel 120.

[0347] Furthermore, a grease channel 129 is provided in the wheel body 128 from the grease nozzle 150 to the movable member 130. An arcuate groove 1213 is provided on the periphery of the wheel body, and the movable member 130 is located in the arcuate groove 1213 via its arcuate rotating portion 134. The port 1211 of the grease channel communicates with the arcuate groove 1213.

[0348] Grease channels 129 are radially distributed from the center of the wheel body 128. An axial hole 1214 is provided within the rotating shaft 127, connecting to the grease channels 129. A grease nozzle 150 is located at one end of the rotating shaft 127. The grease nozzle 150 comprises a cap 151, a ball 152, and a spring 153. The cap 151 has a grease hole 154. The ball 152 is supported by the spring 153 and blocks the grease hole 154, making the grease nozzle 150 function as a one-way valve that only allows grease to be injected into the grease channels 129. As shown in Figure 47, the grease nozzle 150 is concealed within the body 700. The body 700 has a through hole 701 corresponding to the grease nozzle 150, and a cap 702 is placed over the through hole 701. When grease is needed, the cap 702 can be opened and an external grease gun device connected to the grease nozzle 150 can be used to fill the grease channels 129 with grease.

[0349] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A nail magazine device, comprising a side wall, a movable component and a cover, wherein the cover is arranged on the side wall, an internal space is formed between the cover and the side wall, the movable component is located in the internal space, a first side surface of the movable component is arranged toward the side wall, and a second side surface of the movable component is arranged toward the cover, the internal space between the movable component and the cover forms a nail magazine for accommodating gun nails, the cover is configured to be able to open or close relative to the side wall to open or close the nail magazine, and the movable component is configured to be able to adjust the width of the nail magazine. 2 . The nail magazine device according to claim 1 , further comprising a first elastic element, a first end of the first elastic element is connected to the first side surface of the movable member, and a second end of the first elastic element is connected to the side wall.

3. The nail magazine device according to claim 1, wherein: The side wall has a folded edge, and the cover is slidably arranged on the folded edge of the side wall.

4. The nail magazine device according to claim 3 further includes a tail cover, which is arranged at the rear of the cover, and the tail cover is configured to abut against the rear end of the side wall to prevent the cover from moving forward when the cover moves forward.

5. The nail magazine device according to claim 4, further comprising a push member and a second elastic element, wherein: The push-pull member is disposed in the nail magazine, the front end of the second elastic element is connected to the push-pull member, and the rear end of the second elastic element is connected to the tail cover.

6. The nail magazine device according to claim 5, wherein: The cover has a receiving hole extending forward and backward, the second elastic element is arranged in the receiving hole, the receiving hole has a slit connected to the nail magazine, the push member has a support foot, the support foot extends into the receiving hole through the slit, and the front end of the second elastic element is connected to the support foot.

7. A driving device, wherein: The driving device is configured to drive the lifting wheel at a first direction to lift the gun needle during a first period, and to drive the air pump at a second direction to inflate the air cylinder during a second period.

8. The driving device according to claim 7, wherein: The driving device comprises: A motor having a first output terminal and a second output terminal; a first transmission device, the first transmission device being arranged between the first output end of the motor and the lifting wheel, the first transmission device comprising a first one-way rotation mechanism, the first transmission device being configured such that: when the first output end rotates in the first direction, the first output end drives the lifting wheel via the first transmission device; and when the first output end rotates in the second direction, the first one-way rotation mechanism disengages the first output end from driving the lifting wheel; A second transmission device, the second transmission device is arranged between the second output end of the motor and the air pump, the second transmission device includes a second one-way rotation mechanism, and the second transmission device is configured as follows: when the second output end rotates in the second direction, the second output end drives the air pump via the second transmission device; and when the second output end rotates in the first direction, the second one-way rotation mechanism disengages the second output end from driving the air pump.

9. The driving device according to claim 8, wherein: The first transmission device also includes a first reduction mechanism. The lifting wheel, the first reduction mechanism, the first one-way rotation mechanism and the first output end are coaxially arranged. The first reduction mechanism is a planetary gear mechanism coaxially arranged at the input end and the output end, and the first one-way rotation mechanism is a ratchet pawl mechanism.

10. The driving device according to claim 9, wherein: The first one-way rotation mechanism comprises a first ratchet and pawl mechanism, wherein the first ratchet and pawl mechanism is configured such that when the first output end rotates in the first direction, the first ratchet and pawl mechanism can be engaged to drive the lifting wheel; And when the first output end rotates in the second direction, the first ratchet and pawl mechanism can idle to disengage the driving of the lifting wheel by the first output end.

11. The driving device according to claim 10, wherein: The first one-way rotation mechanism also includes a second ratchet and pawl mechanism, which is configured as follows: when the first output end rotates with the first direction and the first output end drives the lifting wheel via the first transmission device, the second ratchet and pawl mechanism can idle; and when the lifting wheel rotates with the second direction, the second ratchet and pawl mechanism engages to prevent the lifting wheel from rotating with the second direction.

12. The driving device according to claim 8, wherein: The second transmission device also includes a second reduction mechanism and a flywheel, wherein the flywheel is configured to drive the air pump to inflate the cylinder, the axis of the flywheel is located below the axis of the second output end, the second reduction mechanism is a heteroaxial gear transmission mechanism, and the second one-way rotation mechanism is a ratchet pawl mechanism.

13. The driving device according to claim 12, wherein: The second transmission device includes the off-axis gear transmission mechanism and the third ratchet and pawl mechanism which transmit the power from the second output end to the flywheel in sequence, and the third ratchet and pawl mechanism is configured as follows: when the second output end rotates in the second direction, the second output end drives the flywheel via the second transmission device; and when the second output end rotates in the first direction, the third ratchet and pawl mechanism disengages the drive of the flywheel by the second output end.

14. A gun needle lifting mechanism, comprising: A gun needle, wherein teeth are arranged along the length direction of the gun needle; A lifting wheel, the lifting wheel comprising a first part and a second part, the first part being provided with a lifting portion, the circumference corresponding to the first part having a first angle range, and the circumference corresponding to the second part having a second angle range; when the lifting wheel rotates to a position corresponding to the teeth in the first angle range, the lifting portion is configured to be able to mesh with the teeth to lift the gun needle; When the lifting wheel rotates to a position corresponding to the teeth in the second angle range, the lifting portion is configured to be disengaged from the teeth to release the gun needle; a movable member, the movable member being mounted on the lifting wheel and being configured to be movable from a first position to a second position to adjust the meshing of the lifting portion with the teeth as the lifting wheel rotates; An elastic element is configured to push the movable member to move from the second position to the first position.

15. The needle lift mechanism of claim 14, wherein: The movable member is mounted on the lifting wheel at the starting end of the first angle range, and the starting end is the end where the lifting portion and the teeth begin to mesh when the lifting wheel rotates to lift the gun needle. The movable member has a force-bearing portion and a meshing portion. The force receiving portion and the meshing portion are configured as follows: When the movable member is located at the first position: the force-bearing portion is located at the blocking position, and the meshing portion deviates from the meshing position; When the movable member rotates with the lifting wheel, the force-bearing portion is resisted by the teeth and overcomes the elastic force of the elastic element so that the movable member moves from the first position to the second position; When the movable member is located at the second position: the force-bearing portion deviates from the resisting position, the meshing portion is located at the meshing position, and is in a sequence of meshing with the teeth together with the lifting portion.

16. The needle lift mechanism of claim 15, wherein: The pitches of adjacent teeth on the gun needle are equal, the spacings of adjacent lifting parts on the lifting wheel are equal, and when the meshing part is at the meshing position and is in a sequence of meshing with the teeth together with the lifting part, the angular distance between the meshing part and the adjacent lifting part is equal to the spacing between the adjacent lifting parts.

17. The needle lift mechanism of claim 15, wherein: The lifting wheel comprises two spaced walls, a second gap is formed between the two spaced walls, two ends of the lifting part are assembled on the two spaced walls, and the middle part of the lifting part is located in the second gap.

18. The needle lift mechanism of claim 17, wherein: The movable member pin shaft can be pivotally assembled in the second gap.

19. The needle lift mechanism of claim 14, wherein: The lifting wheel comprises a rotating shaft and a wheel body rotating with the rotating shaft, an oiling nozzle is arranged on the wheel body, and a grease passage from the oiling nozzle to the lifting part is arranged in the wheel body.

20. The needle lift mechanism of claim 19, wherein: The wheel body is provided with a grease passage from the grease injection nozzle to the movable part.

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