A nail gun and safety control device therefor

Abstract

The present application belongs to the technical field of fastening tools, and particularly relates to a nail gun and a safety control device thereof. The nail gun comprises a muzzle, a nail shooting switch and a safety control device. The safety control device comprises a linkage mechanism and a locking mechanism. The linkage mechanism is matched with the muzzle of the nail gun and combined with the nail shooting switch of the nail gun, and is used for controlling the nail shooting switch to be in an effective working state or an ineffective working state. When the nail shooting switch is in the effective working state, the locking mechanism is used for locking the linkage mechanism. In a safe use environment, the nail gun can quickly switch the working state of the linkage mechanism through the locking mechanism, so that the nail shooting switch is always in the effective working state. This is beneficial to improving the working efficiency of the user and reducing the working strength of the user. In addition, the working needs of special environments can also be met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fastening tools, and particularly relates to a nail gun and a safety control device thereof. BACKGROUND

[0002] It is known that the nail gun can be used not only for the connection of plates, but also for the connection and fixation of bricks, concrete and steel plates. The nails shot by the nail gun have great power, and improper operation can endanger the life safety of the user. Therefore, a set of safety control device is arranged at the muzzle of each nail gun, which is used to control the nail shooting switch of the nail gun to be in an effective working state or an ineffective working state. When the safety control device is triggered, the nail shooting switch of the nail gun is in the effective working state, and the nail can be shot by pressing the nail shooting switch at this time. Conversely, the nail shooting switch is in the ineffective working state, and the nail cannot be shot by pressing the nail shooting switch at this time, so as to prevent the user from accidentally shooting nails due to operation errors and reduce the safety hazard.

[0003] However, the above operation must trigger the safety control device to shoot nails, which leads to low working efficiency of the nail gun and large working strength of the user. In particular, when working on the top surface, the user needs to lift the nail gun to trigger the safety control device, and the nail gun is originally heavy and needs to be additionally pressed to trigger, which makes it more difficult for the user with less strength.

[0004] In addition, when encountering special working scenes such as corners, the safety control device cannot be triggered due to obstruction, which leads to the failure of the nail gun to work. SUMMARY

[0005] To solve the above problems, a nail gun and a safety control device thereof are provided. The safety control device can normally work and is locked by a locking mechanism, and the nail shooting switch is always in an effective working state. In a safe working environment, the working efficiency can be improved and the labor intensity can be reduced.

[0006] The present application adopts the following technical solutions:

[0007] A safety control device is arranged in the nail gun and is used for safety control of nail shooting, and characterized in that the safety control device comprises:

[0008] A linkage mechanism is matched and installed with the muzzle of the nail gun, is combined with the nail shooting switch of the nail gun, and is used for controlling the nail shooting switch to be in an effective working state or an ineffective working state; and

[0009] A locking mechanism is used for locking the linkage mechanism when the nail shooting switch is in the effective working state.

[0010] The safety control device can further have the following features: the linkage mechanism comprises a gun nozzle end, a transmission part combined with the nail shooting switch at the other end, and a base for mounting the transmission part;

[0011] The locking mechanism has:

[0012] a positioning part arranged on the transmission part of the linkage mechanism; and

[0013] a limiting part for limiting the position of the positioning part,

[0014] wherein when the transmission part makes the nail shooting switch in an effective working state, the positioning part is in the locking position,

[0015] the limiting part is used for limiting the positioning part in the locking position.

[0016] The safety control device can further have the following features: the other end of the transmission part is located in the base,

[0017] the positioning part is composed of at least one positioning protrusion arranged on the other end;

[0018] the limiting part has an eccentric shaft and a knob assembly for rotating the eccentric shaft,

[0019] the eccentric shaft is arranged in the base in cooperation with the positioning protrusion, and when the positioning protrusion is in the locking position, the eccentric shaft limits the positioning protrusion in the locking position through the knob assembly.

[0020] The safety control device can further have the following features: the knob assembly comprises a knob body fixedly mounted on one end of the eccentric shaft, a positioning spring matched with the knob body, and a positioning ball matched with the positioning spring,

[0021] the base has a first mounting channel part for mounting the other end of the transmission part and a second mounting channel part for mounting the eccentric shaft, and the length direction of the first mounting channel part is perpendicular to the length direction of the second mounting channel part,

[0022] the second mounting channel part is provided with a gap for moving the positioning protrusion,

[0023] the base has a side wall corresponding to the end of the eccentric shaft, and the side wall has a first positioning groove and a second positioning groove matched with the positioning ball,

[0024] when the knob body is rotated to make the positioning ball in the first positioning groove, the eccentric shaft limits the positioning protrusion in the locking position,

[0025] When the button body is rotated so that the positioning ball is in the second first positioning groove, the eccentric shaft is above the positioning protrusion.

[0026] The safety control device can further have the features that the positioning protrusion has two, which are symmetrically arranged on the other end of the transmission part,

[0027] The second first mounting channel part is provided with two notches corresponding to the two positioning protrusions.

[0028] The safety control device can further have the features that the knob body contains a fixing hook for fixing the eccentric shaft,

[0029] The eccentric shaft has a groove for embedding the fixing hook.

[0030] The safety control device can further have the features that the knob body further contains a knob cap containing the positioning spring and an abutting piece abutting against the positioning spring,

[0031] The fixing hook has one end embedded with the eccentric shaft as an embedded end and the other end combined with the knob cap as a combined end,

[0032] The abutting piece has one end abutting against the positioning spring as an abutting end and the other end passing through the knob cap for fixing the combined end as a fixing end.

[0033] The safety control device can further have the features that the abutting end of the abutting piece is in the shape of a convex,

[0034] The fixing hook is in the shape of a inverted U.

[0035] The safety control device can further have the features that the transmission part further has a mounting section connected with the other end and a reset spring,

[0036] The mounting section contains a vertical part perpendicular to the other end, which has a protrusion protruding towards the base,

[0037] The base has a mounting groove corresponding to the protrusion,

[0038] The reset spring is arranged between the mounting groove and the protrusion.

[0039] A nail gun, comprising:

[0040] A muzzle serving as a nail shooting outlet;

[0041] A nail shooting switch for controlling nail shooting; and

[0042] The safety control device cooperates with the gun nozzle and the nail shooting switch to control the nail shooting.

[0043] The safety control device is the safety control device described above.

[0044] The present application has the following effects:

[0045] In a safe use environment, the nail shooting gun can quickly switch the working state of the linkage mechanism through the locking mechanism, so that the nail shooting switch is always in an effective working state, which is conducive to improving the work efficiency of the user and reducing the work intensity of the user. In addition, it can also meet the work needs of special environments.

[0046] The locking mechanism can quickly lock the curved rod through the eccentric shaft and the positioning protrusion, so that the locking operation is time-saving and labor-saving.

[0047] The knob assembly includes a fixing hook, a knob cap, a positioning ball, a positioning spring, and an abutting piece. The fixing hook can quickly fix the axial position of the eccentric shaft and the knob body, and the abutting piece can fix the radial position of the fixing hook, facilitating quick installation of the knob assembly without the need for tools.

[0048] In addition, the positioning ball and the positioning spring can position the knob body on one side, and the positioning spring can also provide elastic force to the abutting piece on the other side. When disassembling, pressing the abutting piece can easily disassemble the fixing hook. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is a structural schematic diagram of the whole nail shooting gun of the present application;

[0050] Figure 2 is an exploded view of the safety control device and the nail shooting switch of the present application;

[0051] Figure 3 is a structural schematic diagram of the safety control device and the nail shooting switch in an invalid working state;

[0052] Figure 4 is a structural schematic diagram of the safety control device and the nail shooting switch in an effective working state;

[0053] Figure 5 is an exploded view of the safety control device of the present application;

[0054] Figure 6 is Figure 3 is a sectional view of the locking mechanism at A-A in FIG. 5;

[0055] Figure 7 is Figure 6 is a sectional view of the curved rod in a non-locked state at C-C in FIG. 5;

[0056] Figure 8 is a schematic view of the state that the curved rod is locked;

[0057] Figure 9 is Figure 3 is a sectional view of the knob assembly at B-B in the figure; and

[0058] Figure 10 is an exploded view of the internal structure of the base and the knob assembly of the present application.

[0059] Meaning represented by the figure mark:

[0060] 1-linkage mechanism; 2-locking mechanism;

[0061] 11-base; 111-first mounting channel part; 112-second mounting channel part; 1121-gap; 113-mounting groove; 114a-first positioning groove; 114b-second positioning groove; 115-fixing pin; 116-stop block; 117-side wall; 12-curved rod; 121-mounting section; 1211-protrusion; 13-positioning protrusion; 14-return spring;

[0062] 21-bias shaft; 211-groove; 22-knob assembly;

[0063] 221-fixing hook; 2211-fitting end; 2212-combination end; 2213-positioning hole; 222-knob cap; 2221-fixing hole; 2222-socket; 2223-mounting cavity; 223-abutment; 2231-abutment end; 2232-fixing end; 224-positioning ball; 225-return spring;

[0064] 100-safety control device; 200-gun nozzle; 300-power device; 400-nail shooting switch; 401-pressing plate; 402-switch return spring; 500-air valve; 501-valve rod. DETAILED DESCRIPTION

[0065] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is specifically described below in combination with examples and drawings.

[0066] <EMBODIMENT>

[0067] Figure 1 is a schematic view of the structure of the whole nail gun of the present application.

[0068] As Figure 1 shown, the nail gun comprises a gun nozzle 200, a power device 300, a nail feeding device (not shown in the figure), a safety control device 100, a nail shooting switch 400 and an air valve 500.

[0069] The gun nozzle 200 is provided with a launching channel and a launching outlet for launching nails; the nail feeding device is provided with a nail passing channel, and a nail row is installed in the nail passing channel; the launching channel is connected with the nail passing channel. The rear end of the gun nozzle 200 is provided with a power device 300 for providing launching power for the nails, and a safety control device 100 is installed between the gun nozzle 200 and the power device 300.

[0070] The power device 300 comprises a shell, and the shell extends downwardly with a handle.

[0071] A nail launching switch 400 and an air valve 500 are installed on the handle. The nail launching switch 400 is used for controlling the launching of nails, and specifically, the nail launching switch 400 is used for controlling the air valve 500 for driving the power device 300 to work. The air valve 500 is provided with a valve rod 501, and a switch spring 402 for resetting the nail launching switch 400 is installed outside the valve rod 501.

[0072] The power device 300 of the embodiment adopts a cylinder, and the switch component driven by the nail launching switch 400 is the air valve 500; if other types of power device 300 are adopted, the nail launching switch 400 can drive corresponding switch components.

[0073] Figure 2 is an exploded view of the safety control device and the nail launching switch of the present application; Figure 3 is a structural schematic view of the safety control device and the nail launching switch in an invalid working state; Figure 4 is a structural schematic view of the safety control device and the nail launching switch in a valid working state.

[0074] As shown in Figure 2 , the nail launching switch 400 is rotatably installed with a pressing plate 401, and the upper end of the pressing plate 401 is opposite to the curved rod 12 of the safety control device 100, and the curved rod 12 is used for locking the upper end part of the pressing plate 401.

[0075] As shown in Figure 3 , when the upper end of the pressing plate 401 is not locked, since there is a certain distance between the pressing plate 401 and the valve rod, the nail launching switch 400 is pressed to drive the pressing plate 401 to rotate, and at this time, the pressing plate 401 will not press down the valve rod 501 in the process of driving, that is, the pressing plate 401 cannot drive the valve rod 501 to work, and the valve rod 501 cannot trigger the air valve 500, so that the power device 300 does not work and cannot complete the launching of nails. At this time, the nail launching switch 400 is in an invalid working state.

[0076] Conversely, as shown in Figure 4As shown, when the upper end of the pressing plate 401 is locked, the pressing plate 401 is in contact with the valve rod even if the nail shooting switch 400 is not pressed. At this time, if the nail shooting switch 400 is pressed to drive the pressing plate 401 to rotate, the pressing plate 401 presses the valve rod in the rotating process, that is, the valve rod 501 is driven by the pressing plate 401 to work, and then the valve rod 501 triggers the air valve 500 to make the power device 300 work, thus completing the nail shooting. At this time, the nail shooting switch 400 is in an effective working state.

[0077] Figure 5 is an exploded view of the safety control device of the present application.

[0078] As shown in Figure 5 , the safety control device 100 comprises a linkage mechanism 1 and a locking mechanism 2. When the nail shooting switch 400 is in an effective working state, the locking mechanism 2 is used to lock the linkage mechanism 1. The specific structure is as follows:

[0079] The linkage mechanism 1 comprises a base 11, one end of which matches the gun nozzle 200, the other end of which is combined with the transmission part of the nail shooting switch 400. The base 11 is installed on the shell through two fixed pins 115, and the base 11 is provided with a first installation passage part 111 for installing the crank 12 and a second installation passage part 112 for installing the eccentric shaft 21, the length direction of the first installation passage part 111 is perpendicular to the length direction of the second installation passage part 112.

[0080] In this embodiment, the transmission part is a crank 12, one end of the transmission part is the front end of the crank 12, and the other end of the transmission part is the rear end of the crank 12. The front end of the crank 12 is arranged at the gun nozzle 200 and extends out of the front end of the gun nozzle 200; the rear end of the crank 12 passes through the first installation passage part 111 and is opposite to the upper end of the pressing plate 401 of the nail shooting switch 400. In order to facilitate processing, the crank 12 of this embodiment is divided into two segments and connected together by a rivet.

[0081] In addition, the middle segment of the crank 12 is bent to form an installation segment 121, the installation segment 121 contains a vertical part which is perpendicular to the other end of the crank 12, the vertical part is located in front of the base 11, and the vertical part has a protrusion 1211 which protrudes towards the base 11. The front end of the base 11 has an installation groove 113, and the installation groove 113 and the protrusion 1211 are installed with a reset spring 14 for resetting the crank 12.

[0082] When the crank 12 is pressed backward against the reset spring 14, the rear end of the crank 12 will touch the pressing plate 401 and lock the upper end position of the pressing plate 401, so as to control the nail shooting switch 400 to be in an effective working state of being able to shoot nails.

[0083] Figure 6 is Figure 3 the cross-sectional view of the locking mechanism at A-A.

[0084] As Figure 6 shown, the locking mechanism 2 comprises a positioning part, a limiting part and a knob assembly 22.

[0085] The positioning part is a positioning protrusion 13 integrally arranged at the rear end of the curved rod 12. Specifically, the positioning protrusion 13 is symmetrically arranged at both sides of the rear end of the curved rod 12 and located in the first mounting channel part 111. The first mounting channel part 111 has a main channel for mounting the transmission part and side channels located at both sides of the main channel for mounting the positioning protrusion 13. The second mounting channel part 112 is provided with two notches 1121 for moving the two positioning protrusions 13, and the two notches 112 are communicated with the corresponding side channels.

[0086] The limiting part has an eccentric shaft 21 and a knob assembly 22 for rotating the eccentric shaft 21. When the curved rod 12 moves backward so that the nail shooting switch 400 is in the effective working state, the positioning protrusion 13 is located at the locking position, and the limiting part is used for limiting the position of the positioning protrusion 13.

[0087] The eccentric shaft 21 is arranged in the second mounting channel part 112.

[0088] Figure 7 is Figure 6 a sectional view of the curved rod in the non-locked state at C-C in FIG. 1; Figure 8 is a schematic view of the curved rod in the locked state.

[0089] As Figure 7 shown, when the curved rod 12 is in the non-locked state, the eccentric shaft 21 is located above the positioning protrusion 13, the positioning protrusion 13 is not limited in the locking position by the eccentric shaft 21, and the curved rod 12 can move freely forward and backward; as Figure 8 shown, when the curved rod 12 is in the locked state, the eccentric shaft 21 is located at the front side of the positioning protrusion 13, the positioning protrusion 13 is limited in the locking position by the eccentric shaft 21, and the curved rod 12 is immediately locked and cannot be reset under the action of the return spring 14.

[0090] When the nail shooting switch 400 is in the effective working state, the eccentric shaft 21 can be blocked at the front side of the positioning protrusion 13 by rotating the knob assembly 22, the curved rod 12 is locked, the curved rod 12 is prevented from being reset, and thus the nail shooting switch 400 is always in the effective working state.

[0091] Figure 9 is Figure 3 a sectional view of the knob assembly at B-B in FIG. 1; Figure 10 is an exploded view of the internal structure of the base and the knob assembly of the present application.

[0092] As Figures 9-10As shown, the knob assembly 22 is used to rotate the eccentric shaft 21 and includes a knob body, a positioning ball 224, and a positioning spring 225.

[0093] The knob body is fixedly installed at one end of the eccentric shaft 21 and includes a knob cap 222, an abutting member 223, and a fixing hook 221.

[0094] The knob cap 222 has a fixing hole 2221 for installing the eccentric shaft 21, a socket 2222 for the fixing hook 221 to insert, and an installation cavity 2223 for successively installing the positioning ball 224, the positioning spring 225, and the abutting member 223. Among them, the socket 2222 is located on the circumferential wall of the fixing hole 2221 and penetrates from the outside of the knob cap 222 to communicate with the fixing hole 2221; the axis of the installation cavity 2223 is parallel to the axis of the eccentric shaft 21.

[0095] The end of the fixing hole 2221 is irregularly shaped and is used for circumferentially fixing the eccentric shaft 21. Its shape is generally a semi-circular hole or a polygonal hole, which can enable the eccentric shaft 21 to achieve synchronous rotation with the knob body.

[0096] The eccentric shaft 21 has a groove 211 corresponding to the socket 2222.

[0097] The fixing hook 221 is a metal part and is shaped like an L. Specifically, it is bent to form a fitting end 2211 for inserting into the groove 211 and fitting with the eccentric shaft 21 and a combining end 2212 for combining with the knob cap 222. When the fitting end 2211 is inserted into the groove 211 along the radial direction of the eccentric shaft 21, the relative position of the eccentric shaft 21 and the knob cap 222 in the axial direction of the eccentric shaft the knob cap 222 cannot move axially on the eccentric shaft 21. At the same time, the relative position of the fixing hook 221 in the axial direction of the eccentric shaft 21 is also limited.

[0098] A positioning hole 2213 with an axis parallel to the axis of the eccentric shaft 21 is formed on the combining end 2212; the abutting member 223 has an abutting end 2231 that abuts against the positioning spring 225 and a fixing end 2232 that passes through the knob cap 222 for fixing the combining end. The shape of the abutting end 2231 is convex and is located in the installation cavity 2223. The fixing end 2232 of the abutting member 223 is a limiting post extending from the fixing end 2232 of the abutting member 223 to the side away from the installation cavity 2223. This limiting post extends out of the installation cavity 2223 and inserts into the positioning hole 2213, thereby limiting the position of the fixing hook 221 in the radial direction of the eccentric shaft 21.

[0099] That is, the fixed hook 221 cannot move in the axial and radial directions of the eccentric shaft 21, and the fixed hook 221 is fixedly connected to the eccentric shaft 21, and the knob cap 222 is quickly mounted. When it needs to be disassembled, the abutting member 223 is pressed, the limiting column is separated from the positioning hole 2213, the fixed hook 221 is pulled out along the radial direction of the eccentric shaft 21, and the knob body is quickly disassembled.

[0100] In addition, a corresponding embedding groove is formed on the part of the knob cap 222 combined with the fixed hook 221, for mounting the fixed hook 221, so that the fixed hook 221 is embedded in the knob cap 222.

[0101] The base 11 has a side wall 117 corresponding to the end of the eccentric shaft 21, and the side wall 117 has a first positioning groove 114a and a second positioning groove 114b matched with the positioning ball 224, and the first positioning groove 114a and the second positioning groove 114b are symmetrically distributed on both sides of the end of the second mounting channel part 112.

[0102] When the knob body is rotated so that the positioning ball 224 is in the first positioning groove 114a, the eccentric shaft 21 limits the positioning protrusion 13 in the locked position.

[0103] When the knob body is rotated so that the positioning ball 224 is in the second positioning groove 114b, the eccentric shaft 21 is above the positioning protrusion 13.

[0104] When the knob body is rotated, the positioning ball 224 is rolled along the side wall 117 of the base 11 under the compression of the positioning spring 225 and enters the first positioning groove 114a or the second positioning groove 114b. In addition, the side wall 117 of the base 11 is further provided with a stopper 116 for limiting the transition rotation of the knob body. Specifically, the stopper 116 is arranged on one side of the straight line formed by the first positioning groove 114a, the end of the second mounting channel part 112 and the second positioning groove 114b, and the knob assembly 22 can only rotate on the other side opposite to the stopper 116 in the rotation process. In this embodiment, the maximum angle of rotation of the knob assembly 22 is 180°.

[0105] An indicator light (not shown in the figure) is arranged on the knob body or the shell, and when the locking mechanism 2 is locked by the linkage mechanism 1, the indicator light is red, which warns the user to operate in a safe environment, and the nail shooting can be realized after the nail shooting switch 400 is pressed. On the contrary, when the locking mechanism 2 is not locked by the linkage mechanism 1, the indicator light is green, which reminds the user that the current state is normal, and the nail shooting can be realized after the nail shooting switch 400 is pressed and the curved rod 12 is pressed.

[0106] The specific action process of the user using the nail gun of this embodiment to control the nail shooting safely is as follows:

[0107] When the knob body is in the initial position, the positioning ball 224 is located in the second positioning groove 114b, the eccentric shaft 21 is located above the positioning protrusion 13, the curved lever 12 is not limited by the eccentric shaft 21, and the safety control device 100 is in a safety control state. At this time, when the user places the muzzle 200 of the nail gun on the nail plane, the nail plane pushes the curved lever 12 backward, the curved lever 12 moves backward against the reset spring 14, and the rear end of the curved lever 12 abuts against the upper end of the pressing plate 401 of the nail switch 400, so that the nail switch 400 is in an effective working state. At this time, the user presses the nail switch 400, and the nail switch 400 can drive the air valve 500 to realize nail shooting.

[0108] In the safety control state, if the muzzle 200 of the nail gun is not placed on the nail plane, the rear end of the curved lever 12 cannot limit the pressing plate 401, and the nail switch 400 is always in an invalid working state. At this time, if the user mistakenly presses the nail switch, the air valve 500 cannot be driven, that is, the nail cannot be shot, thereby ensuring the safety of the operation.

[0109] In a safe working environment, the user uses the nail gun of the embodiment to release the above safety operation mode to shoot nails in the following specific action process:

[0110] First, the user places the nail nozzle 200 on a plane to push the curved lever 12 backward through the plane, so that the rear end of the curved lever 12 moves the pressing plate 401 to abut against the valve rod 501, the positioning protrusion 13 is located at the locking position, the nail switch is in an effective working state, and then the knob cap 222 is turned by 180° to move the positioning ball 224 located in the second positioning groove 114b to the first positioning groove 114a, the knob cap 222 drives the eccentric shaft 21 to rotate from above the positioning protrusion 13 to the front side of the positioning protrusion 13, thereby locking the positioning protrusion 13 at the locking position, and further making the nail switch 400 always in an effective working state. At this time, the user only needs to press the nail switch 400 to realize nail shooting, that is, the nail switch can be continuously pressed to realize continuous nail shooting, thereby improving the nail shooting efficiency.

[0111] At this time, if the user needs to shoot nails again through the safety operation mode, the specific action process is as follows:

[0112] The user reversely rotates the knob cap 222 by 180°, and the positioning ball 224 of the first positioning groove 114a is moved into the second positioning groove 114b. The knob cap 222 drives the eccentric shaft 21 to rotate from the front side of the positioning protrusion 13 to the upper side of the positioning protrusion 13, and at this time, the eccentric shaft 21 no longer locks the positioning protrusion 13. The curved rod 12 moves away from the pressing plate 401 under the action of the return spring 14, and the front end of the curved rod 12 protrudes the nail nozzle 200. At the same time, the force acting on the upper end of the pressing plate 401 disappears, so that the pressing plate 401 rebounds to a position away from the valve rod 501, that is, the nail shooting switch 400 is changed to an invalid working state, and the front end of the curved rod 12 needs to be pressed at the same time to shoot the nail.

[0113] Effects of the embodiment

[0114] The embodiment provides a safety control device and a nail shooting gun comprising the safety control device. The nail shooting gun also has a gun nozzle used for shooting nails and a nail shooting switch used for controlling the shooting of the nails. The safety control device has a linkage mechanism matched with the gun nozzle and matched with the nail shooting switch, which can control the nail shooting switch to be in an effective working state and an invalid working state, and a locking mechanism which can lock the linkage mechanism so that the setting switch is always in the effective working state. The safety control device meets the safety control of the shooting of the nails through the linkage mechanism in a relatively dangerous situation, ensures the safety of the shooting operation, and also realizes that the nail shooting switch is always locked in the effective working state through the locking mechanism in a safe situation, so that the shooting of the nails can be performed by only pressing the nail shooting switch, the shooting efficiency is improved, and the shooting demand in different working environments is met.

[0115] In addition, the linkage mechanism has a transmission part having one end matched with the gun nozzle and the other end combined with the nail shooting switch. The locking mechanism has a positioning part arranged on the transmission part and a limiting part limiting the position of the positioning part. The limiting part is matched with the positioning part, the quick switching of the working state of the nail shooting switch is realized, and in particular, when the working state of the nail shooting switch needs to be frequently switched, the operation time is greatly reduced, and the efficiency of the whole shooting process is improved.

[0116] In addition, the positioning part is composed of at least one positioning protrusion arranged on the other end, and the limiting part has an eccentric shaft and a knob assembly used for rotating the eccentric shaft. When the positioning protrusion is in a locking position, the eccentric shaft limits the positioning protrusion in the locking position through the knob assembly, so that the operation is simpler. At the same time, on the basis of not making great changes to the existing linkage mechanism, the switching of the different working states of the nail shooting switch can be realized by additionally arranging the corresponding locking mechanism, and the production cost is reduced.

[0117] In addition, the knob assembly includes a knob body fixedly mounted at one end of the eccentric shaft, a positioning spring used in conjunction with the knob body, and a positioning ball provided in conjunction with the positioning spring; the base has a side wall corresponding to the end of the eccentric shaft, and the side wall has a first positioning groove and a second positioning groove that cooperate with the positioning ball. When the button body is rotated, the positioning ball will roll along the side wall of the base under the pressing of the positioning spring and enter the first positioning groove or the second positioning groove, so as to quickly and accurately rotate the eccentric shaft to the front side of the positioning protrusion or above the positioning protrusion. Due to the vibration generated when the nail gun is working, the structure of the positioning ball and the positioning groove can prevent the eccentric shaft from being displaced due to the vibration, and play a role in limiting the position of the eccentric shaft. At the same time, the sense of jerk when the positioning ball enters the positioning groove can enhance the user's operation experience.

[0118] In addition, the base has a first installation channel portion for installing the other end of the transmission portion and a second installation channel portion for installing the eccentric shaft, and the length direction of the first installation channel portion is perpendicular to the length direction of the second installation channel portion. There are two positioning protrusions, and the two positioning protrusions are symmetrically arranged at the other end of the transmission portion; two notches corresponding to the two positioning protrusions are provided on the second installation channel portion. Compared with one positioning protrusion, the two symmetrically arranged positioning protrusions have a better limiting effect and can prevent the eccentric shaft from slipping off and causing the curved rod to bounce back.

[0119] In addition, the knob body includes a fixing hook for fixing to the eccentric shaft, and the eccentric shaft has a groove for the fixing hook to be inserted into. The fixing hook is used to quickly fix the knob body to the eccentric shaft, which is convenient for installation.

[0120] In addition, the fixing hook is in the shape of a L, and it has one end that fits and fixes with the eccentric shaft as the fitting end and the other end that combines with the knob cap as the combining end. The fitting end is inserted into the groove along the radial direction of the eccentric shaft, thereby locking the relative position of the eccentric shaft and the knob cap in the axial direction of the eccentric shaft. At the same time, the relative position of the fixing hook in the axial direction of the eccentric shaft is also limited. On this basis, a positioning hole with an axis parallel to the axis of the eccentric shaft is provided on the combining end, and the fixed end of the abutting member extends into the positioning hole, thereby limiting the relative position of the fixing hook in the radial direction of the eccentric shaft. That is to say, the fixing hook cannot move in the axial and radial directions of the eccentric shaft. While realizing the fixed connection of the knob cap to the eccentric shaft, it also facilitates the quick installation of the knob cap. When disassembly is required, press the abutting member to make the limiting column脱出 from the positioning hole, and then the fixing hook can be pulled out along the radial direction of the eccentric shaft to achieve the quick disassembly of the knob body.

[0121] In addition, the mounting section of the transmission part has a vertical part perpendicular to the other end of the transmission part, the vertical part has a protrusion protruding towards the base, the base has a mounting groove corresponding to the protrusion, and the reset spring is arranged between the mounting groove and the protrusion. The above structure realizes the reset of the transmission part and limits the position of the reset spring, facilitating the installation of the reset spring.

[0122] <Variant Example One>

[0123] In the variant example, the safety control device comprises a linkage mechanism and a locking mechanism. When the nail shooting switch 400 is in the effective working state, the locking mechanism is used to lock the linkage mechanism.

[0124] The linkage mechanism comprises a gun nozzle at one end, a transmission part combined with the nail shooting switch 400 at the other end, and a base for mounting the transmission part. The base is mounted on the shell through two fixing pins, and a first mounting channel part for mounting the curved rod is arranged in the base.

[0125] The transmission part is a curved rod, the front end of the curved rod is arranged at the gun nozzle 200 and extends out of the front end of the gun nozzle 200, and the rear end of the curved rod passes through the first mounting channel part and matches the pressing plate 401 of the nail shooting switch 400.

[0126] In addition, the middle section of the curved rod is bent to form a mounting section, the mounting section has a vertical part perpendicular to the rear end of the curved rod, the vertical part is located in front of the base, and the vertical part has a protrusion protruding towards the base. The front end of the base has a mounting groove, and a reset spring for resetting the curved rod is arranged between the mounting groove and the protrusion.

[0127] The locking mechanism is a lock hook or a locking screw.

[0128] When the nail shooting switch is in the effective working state, the lock hook or the locking screw can fix the curved rod of the linkage mechanism on the base or the shell, so that the nail shooting switch is always in the effective working state. At this time, the user can also continuously press the nail shooting switch to realize continuous nail shooting.

[0129] However, in the variant example, the operation mode of the locking mechanism is relatively complex.

[0130] The above examples are only used to illustrate the specific embodiments of the present application, but the present application is not limited to the scope described in the above examples, and various modifications or changes made by those skilled in the art within the scope of the appended claims without creative labor are still within the protection scope of the present patent.

Claims

1. A safety control device provided in a nail gun and used for safety control of a nail, characterized in that, The safety control device comprises: a linkage mechanism, which is installed in matching with a muzzle of the nail gun and combined with a nail shooting switch of the nail gun, and is used for controlling the nail shooting switch to be in an effective working state or an ineffective working state; and a locking mechanism, which is used for locking the linkage mechanism when the nail shooting switch is in the effective working state, the linkage mechanism comprising a transmission part, one end of which matches the muzzle and the other end of which is combined with the nail shooting switch, and a base for installing the transmission part; the locking mechanism having: a positioning part, which is arranged on the transmission part of the linkage mechanism; and a limiting part, which is used for limiting the position of the positioning part, the other end of the transmission part being located in the base, the positioning part being composed of at least one positioning protrusion arranged on the other end, the limiting part having an eccentric shaft and a knob assembly for rotating the eccentric shaft, the eccentric shaft being arranged in the base in matching with the positioning protrusion, and when the positioning protrusion is in a locking position corresponding to the effective working state, the eccentric shaft is blocked in front of the positioning protrusion by the knob assembly, so as to limit the positioning protrusion in the locking position, wherein the knob assembly comprises a knob body fixedly installed on one end of the eccentric shaft and a positioning spring used in matching with the knob body, the knob body comprising a fixed hook for being fixed with the eccentric shaft, a knob cap for containing the positioning spring, and an abutting piece abutting against the positioning spring, the eccentric shaft having a groove for embedding the fixed hook, the fixed hook being bent to form an embedding end for being embedded in the groove and matching with the eccentric shaft and a combined end combined with the knob cap, the abutting piece having an abutting end abutting against the positioning spring and a fixed end penetrating through the knob cap for fixing the combined end, the embedding end being embedded in the groove along the radial direction of the eccentric shaft, the knob cap having an installation cavity for at least installing the positioning spring and the abutting piece, the combined end being provided with a positioning hole having an axis parallel to the axis of the eccentric shaft, and the fixed end being a limiting column which extends out of the installation cavity and is inserted into the positioning hole.

2. The safety control device according to claim 1, wherein: the knob assembly further comprises a positioning ball arranged in matching with the positioning spring, wherein the base has a first installation channel part for installing the other end of the transmission part and a second installation channel part for installing the eccentric shaft, the length direction of the first installation channel part being perpendicular to the length direction of the second installation channel part, the second installation channel part is provided with a gap for moving the positioning protrusion, the base has a side wall corresponding to the end of the eccentric shaft, the side wall being provided with a first positioning groove and a second positioning groove matched with the positioning ball, when the knob body is rotated to make the positioning ball be in the first positioning groove, the eccentric shaft limits the positioning protrusion in the locking position. ​ When the knob body is rotated so that the positioning ball is in the second positioning groove, the eccentric shaft is located above the positioning protrusion.

3. The safety control device according to claim 2, wherein: wherein the positioning protrusion has two positioning protrusions symmetrically arranged on the other end of the transmission part, the second mounting channel part is provided with two notches corresponding to the two positioning protrusions.

4. The safety control device according to claim 3, wherein: wherein, the abutting end of the abutting piece is in the shape of a convex, the shape of the fixed hook is in the shape of a inverted U.

5. The safety control device according to claim 1, wherein: wherein the transmission part further has a mounting section connected with the other end and a return spring, the mounting section contains a vertical part perpendicular to the other end, and the vertical part has a protrusion protruding towards the base, the base has a mounting groove corresponding to the protrusion, the return spring is arranged between the mounting groove and the protrusion.

6. A nail gun characterized by, including: a gun nozzle used as a nail shooting outlet; a nail shooting switch used for controlling nail shooting; and a safety control device cooperating with the gun nozzle and the nail shooting switch to control nail shooting safely; wherein the safety control device is any one of the safety control devices according to claims 1-5.

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