Nail gun

Abstract

The present application relates to a kind of nail guns, before driving, driving part is matched with locking part, i.e. locking part is in first state, when piston is kept in energy storage position. Then, under the action of driving mechanism, driving part is operated and matched with locking part, so that locking part is in second state, when piston is released from energy storage position. The energy of instantaneous release propels piston to drive together with striker to move in working cavity, strikes fastening element (such as nail), and makes it high-speed ejection, to complete driving operation. Since the nail gun uses the cooperation of locking part and top rod on piston to realize the locking function of piston, there is no need to open on striker during locking process, so that the structure of striker remains complete, effectively reduces or avoids the influence on the strength of striker structure, and ensures the stable operation of nail gun. At the same time, during energy storage process, the compression force on piston is transmitted between top rod and locking part, and will not be transmitted to striker, to ensure that the structure of striker remains 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 hits 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 provided in the working cavity, a hammer provided on the piston, the piston being capable of being retained at an energy storage position or being released from the energy storage position to move along an axis of the working cavity to drive the hammer to hit a fastening element, 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 member, a top rod provided on the piston, and a transmission member selectively matched with or separated from the locking member, the locking member having a first state and a second state, when the locking member is in the first state, the transmission member is matched with the locking member to prevent the top rod from moving, and when the locking member is in the second state, the transmission member is separated from the locking member to allow the top rod to drive the locking member to move.

[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 is kept in the energy storage position. Then, under the action of the driving mechanism, the transmission member is actuated and matched with the locking member, so that the locking member is in the second state, at this time the piston is released from the energy storage position. The energy released instantaneously pushes the piston to drive the striker to move together in the working chamber, 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 top rod 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 is transmitted between the top rod 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 chamber includes a first working chamber and a second working chamber in communication, the piston includes a first piston arranged in the first working chamber and a second piston arranged in the second working chamber, the striker and the top rod are arranged on the first piston, the top rod moves along the axis of the first working chamber, and the first piston can be kept in the energy storage position or released from the energy storage position to move along the axis of the first working chamber to drive the striker to strike the fastening element.

[0009] In one embodiment, the extension direction of the top rod is consistent with the extension direction of the striker.

[0010] In one embodiment, the striker is movably arranged on the first piston through a pivot, the striker swings around the axis of the pivot, and the striker moves along the axis direction of the pivot.

[0011] In one embodiment, the locking member includes a first matching part and a blocking part for abutting against the top rod, the transmission member is selectively matched with or disengaged from the first matching part, and the first matching part is disengaged from the transmission member when the transmission member is driven by the driving mechanism.

[0012] In one embodiment, the locking member and the transmission member are rotatably arranged in the gun body, the transmission member is provided with a second matching part and an unlocking part, the second matching part is selectively matched with or disengaged from the first matching part, and the driving mechanism drives the unlocking part to move.

[0013] In one embodiment, the locking member is provided with a first reset member, and the first reset member is used to bias the locking member to keep it in the first state.

[0014] In one of the embodiments, the transmission member is provided with a second reset member, which is used to bias the transmission member to keep the first connecting part in the connecting state.

[0015] In one of the embodiments, a transmission device is arranged between the output shaft of the driving mechanism and the transmission member, and the driving mechanism drives the unlocking part to move through the transmission device.

[0016] In one of the embodiments, the transmission device comprises a crank connected with the output shaft of the driving mechanism, and a transmission pin connected with the crank, which is driven to move the unlocking part under the action of the driving mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the application and are incorporated herein for a purpose of explanations. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations to the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 Structure of the nail gun in one of the embodiments Figure 1 ;

[0020] Figure 2 Structure of the nail gun in one of the embodiments

[0021] Figure 3 Structure of the nail gun in one of the embodiments Figure 2 ;

[0022] Figure 4 Structure of the control device in the locked state in one of the embodiments Figure 1 ;

[0023] Figure 5 Structure of the control device in the locked state in one of the embodiments Figure 2 ;

[0024] Figure 6 Structure of the nail gun in the locked state in one of the embodiments

[0025] Figure 7 Structure of the nail gun in the gradually separated state in one of the embodiments

[0026] Figure 8 Fig. 6 is a schematic view of the internal structure of the nail gun when completely disengaged, according to one embodiment;

[0027] Figure 9 Fig. 7 is a schematic view of the engagement between the striker and the ejector rod, according to one embodiment;

[0028] Figure 10 Fig. 8 is a schematic view of the control device when locked, according to another embodiment.

[0029] 100, nail gun; 110, body; 111, working chamber; 1111, first working chamber; 1112, second working chamber; 120, control device; 121, piston; 1211, first piston; 1212, second piston; 122, striker; 1221, pivot; 1222, ejector rod; 123, locking member; 1231, blocking portion; 1232, first engaging portion; 1233, first return member; 1234, intermediate portion; 124, transmission member; 1241, second engaging portion; 1242, unlocking portion; 1243, rotation pivot; 1244, second return member; 1245, rotation shaft; 1246, retaining groove; 127, swing lever; 128, connecting rod; 130, drive mechanism; 131, transmission pin; 132, crank; 133, transmission device; 140, guide mechanism; 141, nail slot; 142, guide slot; 150, nail feeder. DETAILED DESCRIPTION

[0030] 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, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application.

[0031] In one 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 the piston 121 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 a top rod 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. 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 make the locking member 123 prevent the top rod 1222 from moving. When the locking member 123 is in the second state, the transmission member 124 is decoupled from the locking member 123 to allow the top rod 1222 to drive the locking member 123 to move.

[0032] The nail gun 100 described above, before nailing, the transmission member 124 is coupled with the locking member 123, that is, the locking member 123 is in the first state, 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 acts to decouple with the locking member 123, so that the locking member 123 is in the second state, at this time, the piston 121 is released from the energy storage position. The instantaneous released energy drives the piston 121 to move together with the striker 122 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 nail gun 100 uses the locking member 123 to cooperate with the top rod 1222 on the piston 121 to realize the locking function of the piston 121, therefore, during the locking process, there is no need to open a hole on the striker 122, so that the structure of the striker 122 remains complete, effectively reduces or avoids the influence on the structural strength of the striker 122, and ensures 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 top rod 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.

[0033] It should be noted that the number of the piston 121 in the embodiment can be one or more than two. When the piston 121 is one, the nail gun 100 is a single-cylinder nailing device. When the piston 121 is two, the nail gun 100 is a double-cylinder nailing device.

[0034] Optionally, the driving mechanism 130 can adopt an electric energy storage drive, such as a direct current motor or an alternating current motor; or a 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 has multiple 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.

[0035] It should be further noted that when the locking member 123 is in the second state, the locking member 123 moves under the driving of the ejector rod 1222 in multiple ways, such as: the locking member 123 is rotationally installed in the gun body 110; or the locking member 123 is slidingly installed in the gun body 110, etc. When the locking member 123 is slidingly 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 ejector rod 1222, of course, in order to facilitate pushing away, the locking member 123 can be provided with an inclined surface. Similarly, the transmission member 124 has multiple ways of moving in the gun body 110, such as: the transmission member 124 is rotationally installed in the gun body 110; or the transmission member 124 is slidingly installed in the gun body 110, etc. When the transmission member 124 is slidingly 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.

[0036] 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 ejector rod 1222 are arranged on the first piston 1211. The ejector rod 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 in a stationary state under the cooperation of the ejector rod 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 disengagement between the transmission member 124 and the locking member 123, 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, which pushes 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.

[0037] 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. The first position should be understood as the second piston 1212 moves to or approaches the first position, and the disengagement between the transmission member 124 and the locking member 123 begins.

[0038] In one embodiment, referring to Figure 4 The extension direction of the ejector rod 1222 is consistent with the extension direction of the striker 122. The arrangement of the ejector rod 1222 in the housing is consistent with the arrangement of the striker 122, which avoids the interference of the structure of the striker 122 caused by the increase of the structure of the ejector rod 1222 in the housing, and ensures the stable operation of the striker 122 structure.

[0039] It should be noted that the extension direction of the ejector rod 1222 is consistent with the extension direction of the striker 122, which means that the extension direction of the ejector rod 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.

[0040] In one embodiment, referring to Figure 4 With Figure 9 , the striker 122 is movably arranged on the first piston 1211 through the pivot 1221. The striker 122 swings around the axis of the pivot 1221, and moves along the axis direction 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 ejector rod 1222 in the gun body 110 caused by the striker 122 being locked (for example, the over-positioning phenomenon between the ejector rod 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, and improves the assembly efficiency of the nail gun 100.

[0041] Further, referring to Figure 9 , 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 swing on the first piston 1211 to cause unstable striking action.

[0042] In one embodiment, referring to Figure 9 , 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 to cause unstable striking action.

[0043] In one embodiment, referring to Figure 4The locking member 123 comprises a first connecting portion 1232 and a blocking portion 1231 for abutting against the ejector rod 1222. The transmission member 124 is selectively connected to or disconnected from the first connecting portion 1232, and the first connecting portion 1232 is disconnected from the transmission member 124 when the transmission member 124 is driven by the driving mechanism 130. In the process of nailing, taking a double-cylinder nailing device as an example, the driving mechanism 130 is started to drive the second piston 1212 to slide in the second working chamber 1112. Since the first connecting portion 1232 is connected to the transmission member 124, the first piston 1211 remains stationary under the cooperation of the ejector rod 1222 and the blocking portion 1231, i.e., the blocking portion 1231 is in a first state. At this time, 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 the first position, the driving mechanism 130 triggers the transmission member 124 to act, and the first connecting portion 1232 is disconnected from the transmission member 124, at which time the blocking portion 1231 is switched from the first state to a second state. Under the support of the blocking portion 1231, the gas pressure energy between the first piston 1211 and the second piston 1212 is released instantaneously, pushing the first piston 1211 and the striker 122 to move together in the first working chamber 1111, so that the nails are shot out at high speed to complete the nailing work.

[0044] It should be noted that the first connecting portion 1232 and the blocking portion 1231 can be directly connected as an integral structure, or indirectly connected, for example, the locking member 123 further comprises an intermediate portion 1234, and the first connecting portion 1232 and the blocking portion 1231 are arranged on the intermediate portion 1234.

[0045] In one embodiment, referring to Figure 4 The intermediate portion 1234 and the ejector rod 1222 are located on opposite sides of the striker 122. The blocking portion 1231 is arranged across the striker 122, so that the position of the blocking portion 1231 and the position of the intermediate portion 1234 are separated, so that the structure of the nail gun 100 is reasonably distributed, and interference is avoided due to too concentrated distribution of the structure.

[0046] In other embodiments, the intermediate portion 1234 and the ejector rod 1222 are located on the same side of the striker 122.

[0047] In one embodiment, referring to Figure 4The 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 connecting part 1241 and an unlocking part 1242. The second connecting part 1241 is selectively connected with or disconnected from the first connecting part 1232, and the driving mechanism 130 drives the unlocking part 1242 to move. Thus, during the unlocking process, the driving mechanism 130 drives the unlocking part 1242 to move, so that the transmission member 124 rotates in the gun body 110, and the second connecting part 1241 is disconnected from the first connecting part 1232.

[0048] Specifically, the unlocking part 1242 and the second connecting part 1241 are respectively located on the opposite sides of a rotation fulcrum 1243 of the transmission member 124. Please refer to Figure 7 With Figure 8 When the driving mechanism 130 acts on the unlocking part 1242, the unlocking part 1242 is triggered to start moving, so that the unlocking part 1242 and the second connecting part 1241 on the two sides respectively start rotating around the rotation fulcrum 1243, so that the first connecting part 1232 and the second connecting part 1241 are disconnected. At this time, the blocking part 1231 is switched from the first state to the second state, allowing the ejector rod 1222 to drive the blocking part 1231 to rotate around the axis of the intermediate part 1234, so that the firing pin 122 is in the firing position, and the fastening element is fired at a high speed. When the first connecting part 1232 and the second connecting part 1241 are disconnected, the first connecting part 1232 and the second connecting part 1241 can be disconnected gradually. With the continuous driving of the driving mechanism 130, the second connecting part 1241 also continues to rotate around the rotation fulcrum 1243. At this time, as the first connecting part 1232 and the second connecting part 1241 are gradually disconnected, the blocking part 1231 is also gradually rotated and opened by the ejector rod 1222.

[0049] It should be noted that the driving mechanism 130 triggers the unlocking portion 1242 to act, and controls the first matching portion 1232 to completely separate from or start to gradually separate from the second matching portion 1241. The gradually separating can be achieved in the following manner: the first matching portion 1232 and the second matching portion 1241 have a deep engagement, for example, the first matching portion 1232 is a hook, and the second matching portion 1241 is a card slot, and in the locking process, the hook is completely inserted into the card slot. In this way, the blocking portion 1231 has a movement space before it is completely pushed open, that is, the blocking portion 1231 has a certain rotation space 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 2 mm away from the instant striking position, that is, the second piston 1212 continues to move forward by 2 mm from the first position to trigger the striking action of the striker 122. The displacement of 2 mm of the second piston 1212 corresponds to the action of the jacking rod 1222 from starting to push open the blocking portion 1231 to completely pushing open the blocking portion 1231.

[0050] 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.

[0051] Specifically, please refer to Figure 4 , the second matching 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 matching portion 1241, and the other end of the transmission member 124 is the unlocking portion 1242.

[0052] Alternatively, the first matching portion 1232 is a slot or hole structure, and the second matching portion 1241 is a convex structure; or the first matching portion 1232 is a convex structure, and the second matching portion 1241 is a slot or hole structure; or the first matching portion 1232 is a magnetic or magnetic structure, and the second matching portion 1241 is an electromagnet structure. In addition, the first matching portion 1232 and the blocking portion 1231 are spaced apart in the height direction of the middle portion 1234; or can be located at the same height of the middle portion 1234, that is, the first matching portion 1232 and the blocking portion 1231 are integrated, please refer to Figure 10 .

[0053] Specifically, please refer to Figure 5 , the first matching portion 1232 is a hook. The second matching portion 1241 is a card slot. The hook is engaged with the card slot.

[0054] Optionally, there are various transmission structures between the driving mechanism 130 and the unlocking portion 1242, such as: the driving mechanism 130 directly drives the transmission member 124, such as: the output shaft of the driving mechanism 130 acts on the unlocking portion 1242; or indirectly drives, 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 driving mechanism 130 and the unlocking portion 1242. Please refer to Figure 10 When a 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.

[0055] Further, please refer to Figure 4 The locking member 123 is provided with a first reset member 1233. The first reset member 1233 is used to bias the locking member 123 to keep it in the first state. When the striker 122 completes a strike, the piston 121 is pushed back to the initial position under the drive of the driving mechanism 130, at this time, the blocking portion 1231 is prevented from disengaging from the contact with the top rod 1222, and the locking member 123 starts to rotate under the action of the first reset member 1233, so that the blocking portion 1231 recontacts one end of the top rod 1222. When the blocking portion 1231 recontacts one end of the top rod 1222, the rotation of the transmission member 124 makes the second connecting portion 1241 reengage with the first connecting portion 1232 to complete the re-holding of the striker 122. The rotation of the transmission member 124 can be completed by the driving mechanism 130, or by other reset structures.

[0056] Optionally, the first reset member 1233 can be a spring, a torsion spring, an elastic rubber, an elastic metal sheet, etc.

[0057] In one embodiment, please refer to Figure 4 The transmission member 124 is provided with a second reset member 1244, which is used to bias the transmission member 124 to keep it in the engaged state with the first connecting portion 1232. As can be seen, when the blocking portion 1231 recontacts the top rod 1222, the transmission member 124 is restored to the initial state under the action of the second reset member 1244, so that the first connecting portion 1232 recontacts the second connecting portion 1241, and the transmission member 124 and the locking member 123 are in the engaged state.

[0058] Optionally, the second reset member 1244 can be a spring, a torsion spring, an elastic rubber, an elastic metal sheet, etc.

[0059] In one embodiment, please refer to Figure 4The output shaft of the driving mechanism 130 is provided with a transmission device 133 between the transmission member 124. The driving mechanism 130 drives the unlocking portion 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 portion 1242 and make the unlocking portion 1242 move correspondingly.

[0060] Further, referring to Figure 4 The transmission device 133 includes 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, in the process of driving the first matching portion 1232 to disengage from the second matching portion 1241, the unlocking portion 1242 on 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 the cumulative tolerance on the transmission efficiency, improves the reliability of the transmission structure, and reduces the difference in the nailing force of the whole machine.

[0061] In one embodiment, referring to Figure 4 and Figure 6 The transmission member 124 is provided with a retaining groove 1246 on the side away from the second matching portion 1241. When the second piston 1212 is pushed back to the second position, the transmission pin 131 rotates or moves into the retaining groove 1246 to control the first matching portion 1232 and the second matching portion 1241 to remain in the matching state. The second position is arranged closer to the driving mechanism 130 than the first position. When the second piston 1212 is pushed back to the second position under the action of the driving mechanism 130, the transmission pin 131 rotates or moves into the retaining groove 1246, so that the transmission pin 131 can exert a force on the transmission member 124 in the direction of the second matching portion 1241, so that the second matching portion 1241 and the first matching portion 1232 are combined more stably, thereby facilitating the improvement of the locking force between the transmission member 124 and the locking member 123.

[0062] In one embodiment, referring to Figure 2 The nail gun 100 includes 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 top rod 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 nails for the nail groove 141. At the same time, the guide mechanism 140 makes the striking of the striker 122 more stable, which is conducive to ensuring the consistency of the nailing force of the whole machine.

[0063] In one embodiment, the blocking part 1231 is detachably connected to the intermediate part 1234. When the blocking part 1231 is worn, the entire intermediate part 1234 does not need to be replaced, and only the blocking part 1231 needs to be detached from the intermediate part 1234, which greatly improves the maintenance efficiency of the nail gun 100 and reduces the maintenance cost. In addition, the blocking part 1231 can also be detachably connected to a stress structure, such as a steel sleeve. During the holding process, the ejector rod 1222 directly abuts against the steel sleeve, which is beneficial to reducing the wear of the blocking part 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.

[0064] The technical features of the above embodiments can be combined in any manner. 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 contradictions, they should be considered as the scope of the description.

[0065] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0066] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements 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.

[0067] 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 "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0068] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixing" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly 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.

[0069] In the present application, unless specifically defined otherwise, the first feature is "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 indirectly in 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.

[0070] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

Claims

1. A nail gun comprising: a driving mechanism; a gun body, the gun body having a working chamber; a piston arranged in the working chamber, the piston having a firing pin arranged thereon, the piston being capable of being held in a cocked position or released from the cocked position to move along an axis of the working chamber to drive the firing pin to strike a fastening element; a control device for locking the piston in the cocked position or releasing the piston from the cocked position; characterized in that the control device comprises a locking member, a push rod arranged on the same side of the piston as the firing pin, and a transmission member selectively coupled with or decoupled from the locking member, the locking member having a first state and a second state, the transmission member being coupled with the locking member when the locking member is in the first state to prevent the push rod from moving, the transmission member being decoupled from the locking member when the locking member is in the second state to allow the push rod to drive the locking member to move.

2. The nail gun of claim 1, wherein, the working chamber comprises a first working chamber and a second working chamber in communication, the piston comprises a first piston arranged in the first working chamber and a second piston arranged in the second working chamber, the firing pin and the push rod are arranged on the first piston, the push rod moves along an axis of the first working chamber, and the first piston is capable of being held in a cocked position or released from the cocked position to move along an axis of the first working chamber to drive the firing pin to strike a fastening element.

3. The nail gun of claim 2, wherein, an extension direction of the push rod is consistent with an extension direction of the firing pin.

4. The nail gun of claim 2, wherein, the firing pin is movably arranged on the first piston by a pivot, the firing pin swings around an axis of the pivot, and the firing pin moves along a direction of the axis of the pivot.

5. The nail gun of claim 2, wherein, the locking member comprises a first coupling portion and a blocking portion for abutting against the push rod, the transmission member is selectively coupled with or decoupled from the first coupling portion, and the first coupling portion is decoupled from the transmission member when the transmission member is driven by the driving mechanism.

6. The nail gun of claim 5, wherein, the locking member and the transmission member are rotatably arranged in the gun body, the transmission member has a second coupling portion and an unlocking portion, the second coupling portion is selectively coupled with or decoupled from the first coupling portion, and the driving mechanism drives the unlocking portion to move.

7. The nail gun of claim 5, wherein, the locking member has a first reset member for biasing the locking member to maintain the first state.

8. The nail gun of claim 5, wherein, the transmission member has a second reset member for biasing the transmission member to maintain a coupled state with the first coupling portion.

9. The nail gun of claim 6, wherein, a transmission device is arranged between an output shaft of the driving mechanism and the transmission member, and the driving mechanism drives the unlocking portion to move through the transmission device.

10. The nail gun of claim 9, wherein, the transmission device comprises a crank connected with the output shaft of the driving mechanism and a transmission pin connected with the crank, and the transmission pin drives the unlocking portion to move under the action of the driving mechanism.

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