Nail gun

Abstract

The nail gun (100) is provided with a driving member (124) and a locking member (123). Before driving, the driving member (124) is matched with the locking member (123), i.e. the locking member (123) is in a first state, at this time the piston (121) is kept in an energy storage position. Then, under the action of the driving mechanism (130), the driving member (124) is actuated to be matched with the locking member (123), so that the locking member (123) is in a second state, at this time the piston (121) will be released from the energy storage position. The instantaneous released energy pushes the piston (121) and the striker (122) to move in the working cavity (111) together, strikes the fastening element (such as a nail) and makes it shoot at high speed to complete the driving work. Since the nail gun (100) uses the locking member (123) to cooperate with the extension member (1222) on the piston (121) to realize the locking function of the piston (121), during the locking process, the striker (122) is not required to be opened, so that the structure of the striker (122) is kept complete, the influence on the structural strength of the striker (122) is effectively reduced or avoided, and the stable operation of the nail gun (100) is ensured. Meanwhile, during the energy storage process, the compression force on the piston (121) is transmitted between the extension member (1222) and the locking member (123), and will not be transmitted to the striker (122), so that the structure of the striker (122) is kept stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nailing tools, in particular to a nail gun. BACKGROUND

[0002] A nail gun, also known as a nailer, uses the energy released in an instant to push a hammer to make a hammering movement, and then high-speed shoots a fastening element from a magazine to complete the fixation of an object. According to different driving sources, the nail gun can be divided into an electric nail gun, a pneumatic nail gun, a manual nail gun, etc.

[0003] Some nail guns mainly include a gun body, a hammer, a retaining mechanism, a power source, and two pistons. In the working process, the retaining mechanism locks the hammer, so that one of the pistons cannot slide; then the power source pushes the other piston, so that the gas between the two pistons is compressed. When the power source pushes the piston to slide to a certain position, the retaining mechanism is opened, and the hammer is unlocked, so that the hammer is pushed out at high speed under the action of high-pressure gas, and hammers on the fastening element, so that the fastening element can be shot out at high speed.

[0004] The traditional nail gun usually uses a valve to control the airflow or a mechanical type to lock the hammer. The retaining mechanism is usually locked by a notch on the surface of the hammer, and the retaining mechanism is clamped in the notch to achieve the locking of the hammer. However, the notch has a great influence on the structural strength of the hammer, which leads to a relatively harsh requirement for the material processing technology of the hammer. SUMMARY

[0005] Therefore, it is necessary to provide a nail gun which can reduce or avoid the influence on the structural strength of the hammer, and ensure the stable operation of the nail gun.

[0006] A nail gun comprises a driving mechanism, a gun body provided with a working cavity, a piston device provided in the working cavity, the piston device being provided with a hammer and an extension piece, the piston device being capable of being retained at an energy storage position or being released from the energy storage position along an axis of the working cavity to drive the hammer to hit a fastening element through the extension piece, and a control device for locking the piston at the energy storage position or releasing the piston from the energy storage position, the control device comprising a locking piece and a transmission piece selectively matched with or separated from the locking piece, the locking piece having a first state and a second state, when the locking piece is in the first state, the transmission piece is matched with the locking piece to prevent the extension piece from moving, thereby preventing the piston device from being released from the energy storage position, and when the locking piece is in the second state, the transmission piece is separated from the locking piece, and the piston device is released.

[0007] The nail gun, before nailing, the transmission member is matched with the locking member, that is, the locking member is in the first state, at this time the piston device is kept in the energy storage position. Then, under the action of the driving mechanism, the transmission member acts and is matched with the locking member, so that the locking member is in the second state, at this time the piston device is released from the energy storage position. The energy released instantaneously pushes the piston to drive the striker to move together in the working cavity, strikes the fastening element (such as a nail), and makes it shoot at high speed to complete the nailing work. Since the nail gun uses the locking member to cooperate with the extension member on the piston to realize the locking function of the piston, no opening is needed on the striker during the locking process, so that the structure of the striker remains complete, effectively reducing or avoiding the influence on the structural strength of the striker, and ensuring the stable operation of the nail gun. At the same time, during the energy storage process, the compression force on the piston device is transmitted between the extension member and the locking member, and will not be transmitted to the striker, which effectively avoids the deformation of the striker caused by the compression force on the piston, so that the structure of the striker remains stable.

[0008] In one embodiment, the working cavity includes a first working cavity and a second working cavity in communication, the piston device includes a first piston arranged in the first working cavity and a second piston arranged in the second working cavity, the striker and the extension member are arranged on the first piston, the first piston can be kept in the energy storage position or released from the energy storage position by the extension member to move along the working cavity axis to drive the striker to strike the fastening element; the movement of the second piston in the second working cavity provides power for the release of the first piston from the energy storage position.

[0009] In one embodiment, the striker is movably arranged on the first piston through a pivot, the pivot is perpendicular to the extension direction of the striker, and the striker swings around the axis of the pivot.

[0010] In one embodiment, the extension member is a top rod, and the extension direction of the top rod is consistent with the extension direction of the striker.

[0011] In one embodiment, the driving mechanism provides power for the relative movement of the transmission member and the locking member, when the locking member is in the first state, the driving mechanism drives the transmission member, the transmission member and the locking member make relative separation movement, so that the locking member changes from the first state to the second state; when the locking member is in the second state, the driving mechanism drives the transmission member, the transmission member and the locking member make relative engagement movement, so that the locking member changes from the second state to the first state.

[0012] In one of the embodiments, the locking member and the transmission member are rotatably arranged in the working cavity, the locking member comprises a first connecting part, the transmission member comprises a second connecting part, the first connecting part and the second connecting part are connected or disconnected by rotation, so that the locking member and the transmission member are connected or disconnected.

[0013] In one of the embodiments, the first connecting part comprises a first inner abutting surface and a first outer abutting surface, the second connecting part comprises a second inner abutting surface and a second outer abutting surface, when the first connecting part and the second connecting part are connected, the first inner abutting surface abuts against the second inner abutting surface, so that the first connecting part and the second connecting part are kept in the connected state; when the first connecting part and the second connecting part are disconnected, the first outer abutting surface abuts against the second outer abutting surface, so that the locking member is prevented from moving in the direction of returning to the first state.

[0014] In one of the embodiments, the locking member further comprises a blocking part, the blocking part abuts against the extension member to prevent the extension member from moving when the first connecting part and the transmission member are connected; an intermediate part connecting the first connecting part and the blocking part, the first connecting part and the blocking part can be rotated in the same counterclockwise or clockwise direction through the intermediate part.

[0015] In one of the embodiments, the intermediate part and the extension member are respectively located on two sides of the hammer.

[0016] In one of the embodiments, the locking member further comprises a first reset member, the first reset member is used to bias the locking member to return to the first state when the first connecting part and the second connecting part are disconnected.

[0017] In one of the embodiments, the transmission member further comprises an unlocking part, the unlocking part can be driven by the driving mechanism to drive the second connecting part to rotate.

[0018] In one of the embodiments, the transmission member further comprises a second reset member, the second reset member is used to bias the transmission member to keep the transmission member connected with the locking member.

[0019] In one of the embodiments, a transmission device is arranged between the output shaft of the driving mechanism and the transmission member, the driving mechanism drives the transmission member to move through the transmission device, the transmission device comprises a crank connected with the output shaft of the driving mechanism and rotated under the driving of the driving mechanism, and a transmission pin connected with the crank and in contact with the transmission member to drive the transmission member to rotate under the action of the driving mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the nail gun structure described in one embodiment. Figure 1 ;

[0023] Figure 2 This is a cross-sectional view of the nail gun structure described in one embodiment;

[0024] Figure 3 A schematic diagram of the nail gun structure described in one embodiment. Figure 2 ;

[0025] Figure 4 A schematic diagram of the control device structure in the locked state as described in one embodiment. Figure 1 ;

[0026] Figure 5 A schematic diagram of the control device structure in the locked state as described in one embodiment. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the control device structure for when the device is about to disengage, as described in one embodiment.

[0028] Figure 7 This is a schematic diagram of the control device structure for gradual disengagement as described in one embodiment;

[0029] Figure 8 This is a schematic diagram of the control device structure for complete disengagement as described in one embodiment;

[0030] Figure 9 This is a schematic diagram of the control device structure after complete disengagement as described in one embodiment;

[0031] Figure 10 This is a schematic diagram of the control device structure for regression reset as described in one embodiment;

[0032] Figure 11 This is a schematic diagram of the control device structure after regression reset as described in one embodiment;

[0033] Figure 12Structure diagram of the striker and the blocking part in a gap;

[0034] Figure 13 Structure diagram of the striker and the extension in an embodiment;

[0035] Figure 14 Control device side view in a locked state in an embodiment;

[0036] Figure 15 Structure diagram of the control device in a locked state in another embodiment.

[0037] 100, nail gun; 110, gun body; 111, working cavity; 1111, first working cavity; 1112, second working cavity; 120, control device; 121, piston; 1211, first piston; 1212, second piston; 122, striker; 1221, pivot; 1222, extension; 123, locking part; 1231, blocking part; 1232, first matching part; 1233, first reset part; 1234, intermediate part; 1235, first inner abutting surface; 1236, first outer abutting surface; 124, transmission part; 1241, second matching part; 1242, unlocking part; 1243, rotation pivot; 1244, second reset part; 1245, rotation shaft; 1246, return part; 1247, second inner abutting surface; 1248, second outer abutting surface; 127, swing lever; 128, connecting rod; 130, driving mechanism; 131, transmission pin; 132, crank; 133, transmission device; 140, guide mechanism; 141, nail groove; 142, guide groove; 150, nail feeder. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0039] In an embodiment, please refer to Figures 1 to 4A nail gun 100 comprises a driving mechanism 130, a gun body 110, a piston 121 and a control device 120. The gun body 110 is provided with a working chamber 111. The piston 121 is arranged in the working chamber 111 and is provided with a striker 122. The piston 121 can be kept in an energy storage position or released from the energy storage position to move along the axis of the working chamber 111 to drive the striker 122 to hit a fastening element. The control device 120 is used to lock the piston 121 in the energy storage position or release the piston 121 from the energy storage position. The control device 120 comprises an extension 1222 arranged on the piston 121, a locking member 123 and a transmission member 124 selectively coupled with or decoupled from the locking member 123, wherein the extension 1222 is located on the same side of the piston as the striker 122. The locking member 123 has a first state and a second state. When the locking member 123 is in the first state, the transmission member 124 is coupled with the locking member 123 to prevent the extension 1222 from moving, thereby preventing the piston 121 from being released from the energy storage position. When the locking member 123 is in the second state, the transmission member 124 is completely decoupled from the locking member 123, and at this time the piston 121 is released.

[0040] In the embodiment, the locking member 123 is provided with a first coupling part 1232, and the transmission member 124 is provided with a second coupling part 1241. The first coupling part 1232 comprises a first inner abutting surface 1235, and the second coupling part 1241 comprises a second inner abutting surface 1247. Before nailing, the transmission member 124 is coupled with the locking member 123, and the first inner abutting surface 1235 and the second inner abutting surface 1247 abut, i.e. the locking member 123 is in the first state, and at this time the piston 121 is kept in the energy storage position. Then, under the action of the driving mechanism 130, the transmission member 124 moves and is decoupled from the locking member 123, so that the locking member 123 is in the second state, and at this time the piston 121 is released from the energy storage position. The instantaneous release energy drives the piston 121 and the striker 122 to move together in the working chamber 111, hits the fastening element (such as a nail), and makes it shoot out at high speed to complete the nailing work. Since the locking function of the piston 121 is realized by the cooperation of the locking member 123 and the extension 1222 on the piston 121, no opening is needed on the striker 122 during the locking process, so that the structure of the striker 122 remains complete, effectively reducing or avoiding the influence on the structural strength of the striker 122, and ensuring the stable operation of the nail gun 100. At the same time, during the energy storage process, the compression force on the piston 121 is transmitted between the extension 1222 and the locking member 123, and will not be transmitted to the striker 122, which effectively avoids the deformation of the striker 122 caused by the compression force on the piston 121, so that the structure of the striker 122 remains stable.

[0041] In this embodiment, the extending member is preferably a top rod, which is fixedly connected with the piston 121. Alternatively, the extending member can also be a rod-shaped object, such as a circular truncated cone, a conical truncated cone, a cuboid, etc.

[0042] It should be noted that the number of the piston 121 in this embodiment can be one or more than two. When the piston 121 is one, the nail gun 100 is a single-cylinder nail driving device. When the piston 121 is two, the nail gun 100 is a double-cylinder nail driving device.

[0043] Alternatively, the driving mechanism 130 can be an electric energy storage drive, such as a direct current motor or an alternating current motor; or a gas cylinder energy storage, a chemical energy storage, etc. When the driving mechanism 130 is an electric motor, the nail gun 100 is an electric nail gun. When the driving mechanism 130 is a pneumatic drive, the nail gun 100 is a pneumatic nail gun. Meanwhile, the transmission device 133 between the driving mechanism 130 and the transmission member 124 can have various forms, such as: direct transmission between the driving mechanism 130 and the transmission member 124; or indirect transmission, such as: a connecting rod structure, a double connecting rod structure, a three connecting rod structure, or more connecting rod structures, etc.

[0044] It should be further noted that when the locking member 123 is in the second state, the locking member 123 can move in various ways under the driving of the extending member 1222, such as: the locking member 123 is rotatably installed in the gun body 110; or the locking member 123 is slidably installed in the gun body 110, etc. When the locking member 123 is slidably installed in the gun body 110, the locking member 123 can be installed by cooperating with a sliding block and a guide rail structure. At this time, the locking member 123 will slide away from the direction of the striker 122 under the pushing of the extending member 1222. Of course, in order to facilitate the pushing away, an inclined surface can be provided on the locking member 123. Similarly, the transmission member 124 can have various forms of movement in the gun body 110, such as: the transmission member 124 is rotatably installed in the gun body 110; or the transmission member 124 is slidably installed in the gun body 110, etc. When the transmission member 124 is slidably installed in the gun body 110, the transmission member 124 can be installed by cooperating with a sliding block and a guide rail structure. At this time, the transmission member 124 will be slid away under the action of the driving mechanism 130.

[0045] Further, please refer to Figure 2 and Figure 4The working cavity 111 includes a first working cavity 1111 and a second working cavity 1112 in communication. The piston 121 includes a first piston 1211 arranged in the first working cavity 1111 and a second piston 1212 arranged in the second working cavity 1112. The striker 122 and the extension 1222 are arranged on the first piston 1211. The extension 1222 can move along the axis of the first working cavity 1111 with the first piston 1211. The first piston 1211 can be held in an energy storage position or released from the energy storage position to move along the axis of the first working cavity 1111 to drive the striker 122 to hit the fastening element. Therefore, during the nailing process, the driving mechanism 130 is started to drive the second piston 1212 to slide in the second working cavity 1112 from a second position to a first position. Since the transmission member 124 and the locking member 123 are in engagement, the first piston 1211 is kept stationary under the cooperation of the extension 1222 and the locking member 123, so that the gas between the first piston 1211 and the second piston 1212 is compressed and in an energy storage state. When the second piston 1212 moves to or approaches the first position, the driving mechanism 130 drives the transmission member 124 to move through the transmission device 133 to control the engagement between the transmission member 124 and the locking member 123 to be disengaged, so as to allow the locking member 123 to have a pivoting space, so that the locking member 123 is in a movable state. Under the support of the locking member 123, the gas pressure energy between the first piston 1211 and the second piston 1212 is released instantaneously to push the first piston 1211 and the striker 122 to move in the first working cavity 1111, so that the fastening element (such as a nail) is shot out at high speed to complete the nailing work.

[0046] It should be noted that the second piston 1212 has a first position and a second position in the second working cavity 1112. The second position is arranged closer to the driving mechanism 130 or farther away from the communication position of the first working cavity 1111 and the second working cavity 1112 than the first position. When the driving mechanism 130 drives the second piston 1212 to move, the second piston 1212 slides from the second position to the first position. When the second piston 1212 moves to or approaches the first position, the transmission member 124 and the locking member 123 are disengaged.

[0047] In one embodiment, referring to Figure 4 The extension direction of the extension 1222 is consistent with the extension direction of the striker 122. The arrangement of the extension 1222 in the housing is consistent with the arrangement of the striker 122, avoiding the interference of the structure of the striker 122 caused by the increase of the structure of the extension 1222 in the housing, and ensuring the stable operation of the striker 122.

[0048] It should be noted that the extension direction of the extension member 1222 is consistent with the extension direction of the striker 122, which means that the extension direction of the extension member 1222 can be parallel to the extension direction of the striker 122. Of course, the two directions can also form an angle, but the extension direction of the two should be consistent.

[0049] In one embodiment, referring to Figure 4 With Figure 13 , the striker 122 is movably arranged on the first piston 1211 through a pivot 1221. The pivot 1221 is perpendicular to the extension direction of the striker 122, and the striker 122 swings around the axis of the pivot 1221. Therefore, the movement of the striker 122 relative to the first piston 1211 in this embodiment is a compound movement, so that the structure of the striker 122 on the first piston 1211 remains movable, which effectively solves the over-positioning phenomenon of the extension member 1222 in the gun body 110 caused by the striker 122 being locked (for example, the over-positioning phenomenon between the extension member 1222 and the copper sleeve in the gun body 110). In addition, movably arranging the striker 122 on the first piston 1211 also facilitates the assembly of the striker 122 on the first piston 1211, improving the assembly efficiency of the nail gun 100.

[0050] Further, referring to Figure 13 , the swing angle of the striker 122 is -2°-2°. In this way, by reasonably controlling the swing angle of the striker 122 on the first piston 1211, the striker 122 can not only maintain a floating state on the first piston 1211, but also avoid excessive swinging on the first piston 1211, which leads to unstable striking action.

[0051] In one embodiment, referring to Figure 13 , the movement displacement of the striker 122 is 0.01mm-0.11mm. Similarly, by reasonably controlling the movement displacement of the striker 122 on the first piston 1211, the striker 122 can not only maintain a floating state on the first piston 1211, but also avoid excessive movement on the first piston 1211, which leads to unstable striking action.

[0052] In one embodiment, referring to Figure 4 , Figure 8The locking member 123 includes a first mating part 1232 and a blocking part 1231 for abutting against the extension member 1222. The transmission member 124 can selectively engage or disengage with the first mating part 1232. When the transmission member 124 is driven by the drive mechanism 130, the first mating part 1232 disengages from the transmission member 124. During the nailing process, taking a double-cylinder nailing device as an example, the drive mechanism 130 is activated, causing the second piston 1212 to slide within the second working chamber 1112. Since the first mating part 1232 and the transmission member 124 are in a mating state, the first piston 1211 remains stationary under the combined action of the extension member 1222 and the blocking part 1231, i.e., the blocking part 1231 is in the first state. At this time, the gas between the first piston 1211 and the second piston 1212 is compressed and is in an energy storage state. As the second piston 1212 moves to the first position, the drive mechanism 130 triggers the transmission component 124 to disengage the first mating part 1232 from the transmission component 124. At this time, the blocking part 1231 switches from the first state to the second state. Without the support of the blocking part 1231, the air pressure energy between the first piston 1211 and the second piston 1212 is released instantaneously, pushing the first piston 1211 to move together with the firing pin 122 within the first working chamber 1111, causing the nails to be ejected at high speed to complete the nailing operation.

[0053] It should be noted that the first mating part 1232 and the blocking part 1231 can be directly connected as an integral structure; or they can be indirectly connected, for example, the locking member 123 also includes a middle part 1234, and the first mating part 1232 and the blocking part 1231 are spaced apart on the middle part 1234.

[0054] In one embodiment, please refer to Figure 5 , Figure 14 The middle part 1234 and the extension 1222 are located on opposite sides of the firing pin 122. The blocking part 1231 is arranged across the firing pin 122, which separates the position of action between the extension 1222 and the blocking part 1231 from the position of the middle part 1234, making the structure of the nail gun 100 reasonably distributed and avoiding interference caused by the structure being too concentrated.

[0055] In other embodiments, the intermediate portion 1234 and the extension 1222 are located on the same side of the firing pin 122.

[0056] In one embodiment, please refer to Figure 6, the driving mechanism 130 drives the crank 132 to rotate counterclockwise until the transmission pin 131 contacts the unlocking portion 1242, and the transmission pin 131 applies a force to the unlocking portion 1242. At this time, the transmission member 124 and the locking member 123 are in a state of impending relative movement (impending disengagement), that is, the unlocking portion 1242 is about to rotate counterclockwise to allow the second engaging portion 1241 to start disengaging from the first engaging portion 1232. It should be noted that at this time, the blocking portion 1231 is still in a stationary state and is about to rotate clockwise to release the extension member 1222, so that the hammer 122 is converted to a striking state.

[0057] In one embodiment, referring to Figure 6 、 7 , 8, the locking member 123 and the transmission member 124 are rotatably arranged in the gun body 110. The transmission member 124 is provided with a second engaging portion 1241 and an unlocking portion 1242. The second engaging portion 1241 is selectively engaged with or disengaged from the first engaging portion 1232, and the driving mechanism 130 drives the unlocking portion 1242 to move. In this way, during the unlocking process, the driving mechanism 130 drives the unlocking portion 1242 to move, so that the transmission member 124 rotates in the gun body 110, ensuring that the second engaging portion 1241 is disengaged from the first engaging portion 1232.

[0058] Specifically, the unlocking portion 1242 and the second engaging portion 1241 are located on opposite sides of the rotation fulcrum 1243 of the transmission member 124, respectively. Figure 7 In the process of gradually disengaging, when the driving mechanism 130 acts on the unlocking portion 1242, the unlocking portion 1242 is triggered to start moving, so that the unlocking portion 1242 and the second engaging portion 1241 on both sides start rotating around the rotation fulcrum 1243, respectively, thereby gradually disengaging the first engaging portion 1232 from the second engaging portion 1241, allowing the extension member 1222 to drive the blocking portion 1231 to rotate around the axis of the intermediate portion 1234. When the first engaging portion 1232 is disengaged from the second engaging portion 1241, the blocking portion 1231 is switched from the first state to the second state, so that the hammer 122 is in a striking position and instantly strikes the fastening element, causing the fastening element to be shot at high speed. Among them, the first engaging portion 1232 and the second engaging portion 1241 can be gradually disengaged. With the continuous driving of the driving mechanism 130, the second engaging portion 1241 also continues to rotate around the rotation fulcrum 1243. At this time, with the gradual disengagement between the first engaging portion 1232 and the second engaging portion 1241, the blocking portion 1231 is also gradually rotated and pried open by the extension member 1222.

[0059] It should be noted that, as Figure 7As shown, the driving mechanism 130 triggers the unlocking portion 1242 to act, and controls the first engaging portion 1232 to gradually disengage from the second engaging portion 1241. The gradual disengagement can be achieved by the following way: the first engaging portion 1232 and the second engaging portion 1241 have a deep engagement, for example, the first engaging portion 1232 is a hook, and the second engaging portion 1241 is a slot, and during the locking process, the hook is completely inserted into the slot. In this way, the blocking portion 1231 has a certain space for movement before it is completely pushed open, that is, the blocking portion 1231 has a certain space for rotation before the striker 122 is released instantaneously. At the same time, the specific position of the first position in the second working cavity 1112 can be determined according to the actual product and the needs of the user. For example, the first position is set to be 2mm away from the instant striking position, that is, the second piston 1212 continues to move forward by 2mm from the first position to trigger the striking action of the striker 122. The displacement of 2mm of the second piston 1212 corresponds to the action of the extension member 1222 from starting to push open the blocking portion 1231 to completely pushing open the blocking portion 1231.

[0060] Specifically, please refer to Figure 4 , the rotation pivot 1243 of the transmission member 124 is provided with a rotating shaft 1245, and the transmission member 124 is rotatably arranged in the gun body 110 through the rotating shaft 1245.

[0061] Specifically, please refer to Figure 4 , the second engaging portion 1241, the transmission member 124 and the unlocking portion 1242 are integrated, that is, one end of the transmission member 124 is the second engaging portion 1241, and the other end of the transmission member 124 is the unlocking portion 1242.

[0062] Alternatively, the first engaging portion 1232 is a slot or hole structure, and the second engaging portion 1241 is a convex structure; or the first engaging portion 1232 is a convex structure, and the second engaging portion 1241 is a slot or hole structure; or the first engaging portion 1232 is a magnetic or magnetic structure, and the second engaging portion 1241 is an electromagnet structure. In addition, the first engaging portion 1232 and the blocking portion 1231 are spaced apart in the height direction of the middle portion 1234; or they can be located at the same height of the middle portion 1234, that is, the first engaging portion 1232 and the blocking portion 1231 are integrated, please refer to Figure 15 .

[0063] Specifically, please refer to Figure 14 , the first engaging portion 1232 is a hook, and the second engaging portion 1241 is a slot. The hook and the slot are engaged.

[0064] Optionally, there are various transmission structures between the driving mechanism 130 and the unlocking portion 1242, such as: the driving mechanism 130 and the transmission member 124 are directly transmitted, such as: the output shaft of the driving mechanism 130 acts on the unlocking portion 1242; or indirectly transmitted, such as: a connecting rod structure, a double connecting rod structure, a three connecting rod structure or more connecting rod structures are connected between the two. Among them, please refer to Figure 15 When the double connecting rod structure is connected between the driving mechanism 130 and the unlocking portion 1242, the swing rod 127 is rotatably arranged in the gun body 110, one end of the connecting rod 128 is rotatably connected to the swing rod 127, and the other end of the connecting rod 128 is rotatably connected to the unlocking portion 1242. During the unlocking process, the driving mechanism 130 acts on one end of the swing rod 127 to achieve the disengagement of the first connecting portion 1232 and the second connecting portion 1241.

[0065] In one embodiment, please refer to Figure 8 、 Figure 9 When the transmission pin 131 pushes the unlocking portion 1242 to rotate counterclockwise, the second connecting portion 1241 is completely disengaged from the first connecting portion 1232. At this time, as the first connecting portion 1232 and the second connecting portion 1241 gradually disengage, the blocking portion 1231 is also gradually rotated and opened by the extension piece 1222. The first connecting portion 1232 rotates clockwise together with the blocking portion 1231, the blocking portion 1231 is separated from the extension piece 1222, and the hammer is released after completing a hit.

[0066] Further, please refer to Figure 5 、 Figures 8 to 10 、 Figure 12 In this embodiment, the first connecting portion 1232 includes a first outer abutting surface 1236, the second connecting portion 1241 includes a second outer abutting surface 1248, and the locking member 123 is provided with a first reset member 1233. Under the action of the transmission pin 131, the second connecting portion 1241 is completely disengaged from the first connecting portion 1232, the blocking portion 1231 is separated from the extension piece 1222, and at this time the locking member 123 is in the second state, the piston is in the released state, and the hammer 122 is in the hitting state. When the transmission pin 131 is disengaged from the transmission member 124, the first connecting portion 1232 has a tendency to return to the first state (i.e. counterclockwise rotation) under the action of the first reset member 1233. At this time, the first outer abutting surface 1236 and the second outer abutting surface 1248 are in contact with each other and generate friction to prevent the locking member 123 from rotating counterclockwise, so that the blocking portion 1231 remains relatively stationary during the hitting process of the hammer 122 and leaves a gap between the extension piece 1222, thereby avoiding interference with the extension piece due to the blocking of the blocking portion 1231, and achieving smooth hammer 122 hitting process.

[0067] Further, please refer to Figure 10 ,Figure 11 The locking member 123 is provided with a first reset member 1233 for biasing the locking member 123 to return to the first state. When the striker 122 completes a stroke, the piston 121 is pushed back to the initial position under the drive of the driving mechanism 130, at this time, the blocking part 1231 is disengaged from the contact with the extension member 1222, the first reset member provides a counterclockwise rotating force to the first connecting part 1232, so that the first connecting part 1232 can rotate counterclockwise to a position where the second connecting part 1241 re-matches under the action of the first reset member 1233, under the drive of the crank 132, the transmission pin 131 can push the unlocking part 1242 counterclockwise, so that the second connecting part 1241 can re-engage with the first connecting part 1232, at this time, the locking member 123 returns from the second state to the first state, so that the blocking part 1231 re-contacts one end of the extension member 1222 to complete the re-holding of the striker 122. The rotating mode of the transmission member 124 can be completed by the driving mechanism 130, or can be completed by other reset structures. Preferably, please refer to Figure 10 、 Figure 11 The transmission member 124 is provided with a reset part 1246, the driving mechanism 130 drives the crank 132 to rotate counterclockwise, when the transmission pin 131 rotates counterclockwise from the start to approximately 360°, the transmission pin 131 contacts the reset part 1246, so that the transmission member 124 rotates counterclockwise to restore the state where the second connecting part 1241 matches the first connecting part 1232.

[0068] Optionally, the first reset member 1233 can be a spring, a torsion spring, an elastic rubber, an elastic metal sheet, etc.

[0069] In an embodiment, please refer to Figure 4 The transmission member 124 is provided with a second reset member 1244 for biasing the transmission member 124 to keep the matching state with the first connecting part 1232. When the blocking part 1231 re-contacts the extension member 1222, the transmission member 124 keeps the re-matching state with the locking member 123 under the action of the second reset member 1244.

[0070] Optionally, the second reset member 1244 can be a spring, a torsion spring, an elastic rubber, an elastic metal sheet, etc.

[0071] In an embodiment, please refer to Figure 4 The output shaft of the driving mechanism 130 and the transmission member 124 are provided with a transmission device 133. The driving mechanism 130 drives the unlocking part 1242 to move through the transmission device 133. The transmission device 133 can have various structures, as long as it can transmit the power on the driving mechanism 130 to the unlocking part 1242 and make the unlocking part 1242 move.

[0072] Further, referring to Figure 4 The transmission device 133 comprises a crank 132 connected with the output shaft of the driving mechanism 130, and a transmission pin 131 connected with the crank 132. The transmission pin 131 drives the unlocking portion 1242 to move under the action of the driving mechanism 130. Therefore, during the process of disengaging the first engaging portion 1232 from the second engaging portion 1241, the unlocking portion 1242 of the transmission member 124 is directly acted on by the transmission pin 131 in the embodiment, so that the transmission member 124 directly moves. This effectively simplifies the transmission components, reduces the influence of cumulative tolerance on transmission efficiency, improves the reliability of the transmission structure, and reduces the difference in the nailing force of the whole machine.

[0073] In one embodiment, referring to Figure 2 The nail gun 100 comprises a guide mechanism 140 and a nail feeder 150. The guide mechanism 140 is arranged on the gun body 110, and the guide mechanism 140 is provided with a nail groove 141 and a guide groove 142. The striker 122 can extend into the nail groove 141. The extension member 1222 can extend into the guide groove 142. The nail feeder 150 is arranged on the guide mechanism 140, and the nail feeder 150 is used to provide fastening elements into the nail groove 141. In this way, the nail feeder 150 provides stable nail rows for the nail groove 141. At the same time, the guide mechanism 140 makes the striking of the striker 122 more stable, which is beneficial to ensure the consistency of the nailing force of the whole machine.

[0074] In one embodiment, the blocking portion 1231 is detachably connected to the intermediate portion 1234. When the blocking portion 1231 is worn, the entire intermediate portion 1234 does not need to be replaced, but only the blocking portion 1231 needs to be removed from the intermediate portion 1234, which greatly improves the maintenance efficiency of the components of the nail gun 100 and reduces the maintenance cost. In addition, the blocking portion 1231 can also be detachably connected with a stress structure, such as a steel sleeve. During the holding process, the extension member 1222 directly abuts against the steel sleeve, which is beneficial to reduce the wear of the blocking portion 1231. At the same time, during the maintenance process, only the steel sleeve structure needs to be replaced, further improving the maintenance efficiency of the nail gun 100.

[0075] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0076] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0077] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0078] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0079] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0081] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known with other elements except that they are not explicitly mentioned. The terms "comprises", "comprising", "includes", "including" and the like can be used herein, and these terms are intended to be interpreted expansively and be taken to include the possibility that elements, components, or steps therebetween can be additional elements, components or steps. The terms "a", "an", and "the" and similar referents in the context of an embodiment described herein are to be construed to be open-ended, allowing for the possibility that there are alternatives in use, the same as the

Claims

1. A nail gun comprising: a drive mechanism; a body having a working chamber therein; a piston device disposed in the working chamber, the piston device having a striker disposed thereon, the piston device further having a ram disposed on the same side of the striker as the striker, the piston device being releasable from an energy storage position by the ram to move along an axis of the working chamber to drive the striker to strike a fastening element; a control device for locking the piston device in the energy storage position or releasing the piston device from the energy storage position; characterized in that the control device comprises a lock having a first state and a second state, and a transmission member selectively engaged with or disengaged from the lock, the transmission member being engaged with the lock when the lock is in the first state to cause the lock to prevent movement of the ram and thereby prevent the piston device from being released from the energy storage position, the transmission member being disengaged from the lock when the lock is in the second state and the piston device is released; the drive mechanism driving the transmission member when the lock is in the second state to cause the transmission member to move in relative engagement with the lock to cause the lock to change from the second state to the first state.

2. The nail gun of claim 1, wherein, the working chamber comprising a first working chamber and a second working chamber in communication, the piston device comprising a first piston disposed in the first working chamber and a second piston disposed in the second working chamber; the striker and the ram both being disposed on the first piston, the first piston being releasable from an energy storage position by the ram to move along an axis of the working chamber to drive the striker to strike a fastening element; movement of the second piston in the second working chamber providing the power to release the first piston from the energy storage position.

3. The nail gun of claim 2, wherein, the striker being pivotably disposed on the first piston, the pivot being perpendicular to a direction of extension of the striker, the striker being able to swing about the axis of the pivot.

4. The nail gun of claim 1, wherein, the ram being a single ram, the ram extending in the same direction as the striker.

5. The nail gun of claim 1, wherein, the drive mechanism providing the power for the transmission member to move relative to the lock, the drive mechanism driving the transmission member when the lock is in the first state to cause the transmission member to move in relative disengagement with the lock to cause the lock to change from the first state to the second state.

6. The nail gun of claim 1, wherein, the lock and the transmission member both being rotatably disposed in the working chamber, the lock comprising a first engagement portion and the transmission member comprising a second engagement portion, the first engagement portion and the second engagement portion being engaged or disengaged by rotation to thereby cause the lock and the transmission member to be engaged or disengaged.

7. The nail gun of claim 6, wherein, The first connecting part comprises a first inner abutting surface and a first outer abutting surface, and the second connecting part comprises a second inner abutting surface and a second outer abutting surface. When the first connecting part is connected with the second connecting part, the first inner abutting surface abuts against the second inner abutting surface to keep the first connecting part and the second connecting part in the connected state. When the first connecting part is disconnected from the second connecting part, the first outer abutting surface abuts against the second outer abutting surface to prevent the locking member from moving in the direction of returning to the first state.

8. The nail gun of claim 6, wherein, The locking member further comprises: a blocking part, which abuts against the ejector rod to prevent the movement of the ejector rod when the first connecting part is connected with the transmission member; an intermediate part, which connects the first connecting part and the blocking part, and the first connecting part and the blocking part can rotate in the same counterclockwise or clockwise direction through the intermediate part.

9. The nail gun of claim 8, wherein, The intermediate part and the ejector rod are located on opposite sides of the striker.

10. The nail gun of claim 6, wherein, The locking member further comprises a first reset member, which is used to bias the locking member to return to the first state when the first connecting part is disconnected from the second connecting part.

11. The nail gun of claim 6, wherein, The transmission member further comprises: an unlocking part, which can be driven by the driving mechanism to drive the second connecting part to rotate.

12. The nail gun of claim 6, wherein, The transmission member further comprises a second reset member, which is used to bias the transmission member to keep the transmission member connected with the locking member.

13. The nail gun of claim 1, wherein, A transmission device is arranged between the output shaft of the driving mechanism and the transmission member, and the driving mechanism drives the transmission member to move through the transmission device. The transmission device comprises: a crank, which is connected with the output shaft of the driving mechanism and rotates under the driving of the driving mechanism; a transmission pin, which is connected with the crank and contacts the transmission member to drive the transmission member to rotate under the action of the driving mechanism.

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