Nailing gun

Abstract

The utility model discloses a nailing gun which comprises a shell, a transmission mechanism, a magnetic piece, a Hall detection assembly and an installation base. Wherein the Hall detection assembly comprises a cover plate and a micro circuit board, the micro circuit board is provided with a Hall sensor used for sensing the magnetic part, a groove is formed in the cover plate, the shape of the groove is roughly matched with that of the micro circuit board, and the micro circuit board is embedded in the groove; the mounting base is arranged or formed on the shell, the mounting base comprises a fixing position fixedly connected with the cover plate, a supporting structure for supporting the Hall detection assembly and a surrounding wall arranged around the supporting structure, the supporting structure abuts against the bottom side surface of the Hall detection assembly, and the surrounding wall makes contact with the circumferential outer wall of the cover plate to limit the cover plate; at least three contact parts of the enclosure bulkhead and the circumferential outer wall of the cover plate are arranged, and the connecting lines of the central points of the three contact parts can form a triangle. The positioning of the Hall sensor of the nailing gun is more stable and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of power tools, and particularly relates to a nail gun. Background Art

[0002] A nail gun (also simply called a nailer) is a commonly used nail driving tool. A magnetic part is arranged on the transmission mechanism of the nail gun, and a Hall sensor is arranged at a position corresponding to the housing. The Hall sensor is used to detect the magnetic part so as to detect the operation of the transmission mechanism, identify whether a nail driving cycle is completed, and thus control the motor.

[0003] In the existing nail gun, the cover plate for fixing the Hall sensor is bonded to the housing by glue. During the use of the nail gun, the reaction force generated by nail driving easily causes the cover plate to fall off, resulting in a change in the position of the Hall sensor, inaccurate detection of the nail driving cycle, and thus possible premature shutdown of the motor and failure to drive nails.

[0004] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0005] Therefore, the technical problem to be solved by the utility model is that the position of the Hall sensor of the existing nail gun is prone to shift or even fall off, resulting in the inability to drive nails normally.

[0006] To solve the above technical problem, the utility model provides a nail gun, comprising:

[0007] A housing;

[0008] A transmission mechanism arranged in the housing and driven by a power source to perform nail driving movement;

[0009] A magnetic part fixedly arranged on the transmission mechanism;

[0010] A Hall detection component, comprising a cover plate and a micro circuit board; a Hall sensor for sensing the magnetic part is arranged on the micro circuit board, the cover plate is formed with a groove, the shape of the groove is substantially matched with the shape of the micro circuit board, and the micro circuit board is embedded in the groove;

[0011] A mounting seat arranged on or formed in the housing, the mounting seat comprises a fixing position fixedly connected with the cover plate, a supporting structure for supporting the Hall detection component, and a surrounding wall arranged around the supporting structure. The supporting structure abuts against the bottom surface of the Hall detection component, the surrounding wall contacts the circumferential outer wall of the cover plate to limit the cover plate, and the contact part between the surrounding wall and the circumferential outer wall of the cover plate comprises at least three parts, and the connecting lines of the central points of the three contact parts can form a triangle.

[0012] In one embodiment, the cover plate includes a main body and fixing ears provided on one side of the main body. The groove is provided in the main body, and the fixing ears are fixedly connected to the fixing positions through fasteners.

[0013] In one embodiment, the extended surface of the fixing ear is bent with the bottom wall of the groove; wherein, the bending angle is an obtuse angle.

[0014] In one embodiment, a wire passing notch is provided at one place of the surrounding wall, and a fixing notch corresponding to the fixing position is provided at another place. The wire of the Hall detection component passes through the wire passing notch and is connected to the main control board of the nail gun, and the fixing ear is snapped into the fixing notch and fixedly connected to the fixing position.

[0015] In one embodiment, the wire passing notch and the fixing notch are respectively provided on two adjacent sides of the surrounding wall.

[0016] In one embodiment, the support structure includes stepped surfaces arranged at intervals along the surrounding wall. The stepped surfaces are at least distributed at three positions of the surrounding wall in a triangular distribution, and the bottom side surface of the cover plate abuts against and is limited by the stepped surfaces; or, both the bottom side surface of the cover plate and the outer edge surface of the micro circuit board abut against and are limited by the stepped surfaces.

[0017] In one embodiment, the support structure includes support ribs provided in the middle area of the surrounding wall, and the outer surface of the micro circuit board abuts against and is limited by the support ribs.

[0018] In one embodiment, the first side surface of the micro circuit board faces the bottom wall of the groove, the second side surface of the micro circuit board faces away from the bottom wall of the groove, and the Hall sensor is provided on the first side surface.

[0019] In one embodiment, the depth of the groove is substantially the same as the sum of the thickness of the board surface of the micro circuit board and the Hall sensor, and the outer edge of the second side surface is substantially flush with the end surface of the groove formed by the cover plate.

[0020] In one embodiment, the micro circuit board is further provided with a wire passing hole, and the end of the wire passes through the wire passing hole from one side of the second side surface and extends to the first side surface and is welded to the pad of the micro circuit board.

[0021] The technical solution provided by the present utility model has the following advantages:

[0022] For the nail gun provided by the present utility model, the Hall detection component embeds the micro circuit board provided with a Hall sensor in the groove of the cover plate, and an installation seat for fixing the Hall detection component is provided or formed on the housing. The installation seat is provided with a fixing position, a support structure and a surrounding wall arranged around the cover plate. The support structure abuts against the bottom surface of the Hall detection component, and the contact parts of the surrounding wall and the circumferential outer wall of the cover plate include at least three, and the connection lines of the center points of the three contact parts can form a triangle. In this way, the installation seat can position the Hall detection component at the bottom side of the Hall detection component and three different circumferential positions of the cover plate, realizing the reliable positioning of the Hall detection component, and the fixing position further fixes the Hall detection component relative to the housing, reducing the detection error caused by the displacement of the Hall sensor, and ensuring the accuracy of the nail driving cycle detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 Schematic three-dimensional structure diagram of the nail gun provided by the embodiment of the present utility model;

[0025] Figure 2 is Figure 1 Schematic internal structure diagram of a part of the housing of the nail gun shown;

[0026] Figure 3 is Figure 2 Enlarged structure diagram of area A of the housing of the nail gun shown;

[0027] Figure 4 Schematic three-dimensional structure diagram of the Hall detection component of the nail gun provided by the embodiment of the present utility model;

[0028] Figure 5 Schematic three-dimensional structure diagram of the micro circuit board of the nail gun provided by the embodiment of the present utility model, showing the assembly relationship of the Hall sensor and the wire;

[0029] Figure 6 Schematic three-dimensional structure diagram of the cover plate of the Hall detection component provided by the embodiment of the utility model;

[0030] Figure 7 Enlarged structure diagram of the installation seat of the nail gun provided by the embodiment of the utility model;

[0031] Figure 8 Schematic three-dimensional structure diagram of the cooperation relationship between the installation seat and the micro circuit board of the nail gun provided by the embodiment of the present utility model. Detailed implementation manners

[0032] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0034] In the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "top", "bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the sake of easy understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0035] Embodiment 1

[0036] Please refer to Figure 1 As shown, this embodiment provides a nail gun 100. The nail gun 100 includes a housing 10, a transmission mechanism (not labeled) disposed in the housing 10, and a power source (not labeled) connected to the transmission mechanism for driving the transmission mechanism to perform a nailing motion. In this example, the nail gun 100 is an electric nail gun, and the power source is specifically a motor. The nail gun 100 further includes a battery pack interface 16 for connecting a battery pack to supply power to the motor. The power source of the nail gun can also be pneumatic or gas, which is not limited herein.

[0037] The housing 10 includes a main body and a handle 12. The main body is used to accommodate the motor and the transmission mechanism, and the handle 12 is used for the user to grip to control the nail gun 100. The nail gun 100 further includes a nozzle 13 disposed at the front end of the main body. During the nailing process, the nozzle 13 is used to abut against the workpiece to locate the nailing position. The nozzle 13 is movably disposed and will automatically reset after leaving the workpiece.

[0038] The nail gun 100 further includes a trigger 14 disposed on the handle 12 for controlling the motor of the nail gun 100. The nail gun 100 has a single-shot mode and a continuous-shot mode. In the single-shot mode, the nail gun 100 only fires one nail each time, and in the continuous-shot mode, the nail gun 100 can continuously fire multiple nails. The nail gun 100 is provided with a mode switch for selecting the single-shot mode or the continuous-shot mode.

[0039] Specifically, in the single-shot mode, the nozzle 13 abuts against the workpiece, the trigger 14 is pulled, the nail gun 100 fires a nail, and the motor stops. When a second nail needs to be fired, the above process needs to be repeated. In the continuous-fire mode, first hold the trigger 14, then use the nozzle 13 to abut against the workpiece, fire a nail, and the motor stops. Subsequently, keep the trigger 14 pressed and lift the nail gun 100, the nozzle 13 leaves the workpiece, the nozzle 13 resets, moves to the next position to make the nozzle 13 abut against the workpiece again, and the second nail can be fired, and the motor stops. By repeating this process, multiple nails can be continuously fired.

[0040] As can be seen from the above, whether in the single-shot mode or the continuous-fire mode, every time a nail is fired by the nail gun, the motor will stop to ensure safety. The nail gun identifies whether a nail-firing cycle is completed by detecting the movement of the transmission mechanism, thereby controlling the motor to stop rotating. The nail-firing cycle detection scheme of the nail gun in this embodiment will be specifically described below.

[0041] Please refer to Figure 2 and Figure 3 , the nail gun 100 includes a magnetic member (not shown) disposed on the transmission mechanism and a Hall detection component 30 for detecting the magnetic member. The magnetic member moves periodically with the transmission mechanism, and the Hall detection component 30 is disposed on the housing 10 and is close to the transmission mechanism. In a nail-firing cycle, the position of the magnetic member relative to the Hall detection component 30 changes with the transmission mechanism. At one position, the magnetic member corresponds to the Hall detection component 30, and the Hall detection component 30 detects the magnetic field signal of the magnetic member and emits an identification signal. According to the identification signal, it can be determined that the transmission mechanism has completed the current nail-firing cycle, thereby controlling the motor to stop rotating.

[0042] Please refer to Figure 4 , Figure 5 and Figure 6 , the Hall detection component 30 includes a cover plate 31 and a microcircuit board 35. A Hall sensor 36 for sensing the magnetic member is disposed on the microcircuit board 35. The cover plate 31 is formed with a groove 313, and the shape of the groove 313 generally matches the shape of the microcircuit board 35. The microcircuit board 35 is embedded in the groove 313. Specifically, the microcircuit board 35 is rectangular or square, and the groove 313 is a rectangular parallelepiped groove or a cube groove matching the microcircuit board 35.

[0043] Preferably, the outer edge of the microcircuit board 35 is slightly interference-fitted with the side wall of the groove 313, so that the microcircuit board 35 can be kept in the groove 313 after being embedded in the groove 313 and will not fall out of the groove 313. When assembling the Hall detection component 30, first assemble the microcircuit board and the cover plate 31 into a whole, and then fixedly connect the cover plate 31 to the housing 10, thereby realizing the fixed connection of the microcircuit board 35 relative to the housing 10.

[0044] Please refer to Figure 3 and7 As shown in the figure, the housing 10 is provided with or formed with a mounting seat 20 for mounting the Hall detection component 30. Among them, the mounting seat 20 includes a fixing position 22 for fixedly connecting with the cover plate 31, a supporting structure 23 for supporting the Hall detection component 30, and a surrounding wall 24 arranged around the supporting structure 23. The fixing position 22 is close to the outer side of the surrounding wall 24 and is fixedly connected with the cover plate 31. The supporting structure 23 abuts against the bottom surface of the Hall detection component 30 for supporting and positioning the Hall detection component 30. The surrounding wall 24 contacts the circumferential outer wall of the cover plate 31 to limit the cover plate 31. In order to ensure the reliable positioning of the cover plate 31, the contact parts between the surrounding wall 24 and the circumferential outer wall of the cover plate 31 include at least three. The connecting lines of the center points of the three contact parts can form a triangle, so as to limit the cover plate 31 in three different directions in the circumferential direction of the surrounding wall 24, and the cover plate 24 and the microcircuit board 35 can be positioned more stably and reliably, and it is not easy to have Hall displacement.

[0045] In the nail gun provided in this embodiment, the Hall detection component embeds the microcircuit board provided with the Hall sensor into the groove of the cover plate. A mounting seat for fixing the Hall detection component is provided or formed on the housing. The mounting seat is provided with a fixing position, a supporting structure and a surrounding wall arranged around the cover plate. The supporting structure abuts against the bottom surface of the Hall detection component. The contact parts between the surrounding wall and the circumferential outer wall of the cover plate include at least three, and the connecting lines of the center points of the three contact parts can form a triangle. In this way, the mounting seat can position the Hall detection component at the bottom side of the Hall detection component and in three different circumferential directions of the cover plate, realizing the reliable positioning of the Hall detection component. Moreover, the fixing position further fixes the Hall detection component relative to the housing, reduces the detection error caused by the displacement of the Hall sensor, and ensures the accuracy of the nail driving cycle detection.

[0046] Specifically in this embodiment, the surrounding wall 24 includes side walls in four directions distributed in a rectangular shape. Each side wall contacts the circumferential outer wall of the cover plate 31 to position the cover plate 31 in four directions, and the positioning is very reliable.

[0047] In a specific embodiment, please refer to Figure 6 As shown in the figure, the cover plate 31 includes a main body 311 and fixing ears 314 arranged on one side of the main body 311. The groove 313 is arranged on the main body 311. The fixing ears 314 are fixedly connected with the fixing position 22 through fasteners. Specifically, the fastener is a screw. The fixing ears 314 are provided with fixing holes 315, and the fastener passes through the fixing holes 315 and is screwed tightly with the fixing position 22. In this embodiment, the fixing ears for fixing the cover plate are arranged on the side part of the main body, which does not affect the positioning structure design of the main body for the microcircuit board, and the tightening force of the fastener is not easily applied to the microcircuit board, which is beneficial to ensuring the structural form of the microcircuit board.

[0048] Specifically, the fixing ear 314 is connected to the bottom wall of the connecting groove 313 and extends obliquely outward from the outer edge of the bottom wall of the groove 313. The extending surface of the fixing ear 314 is bent with the bottom wall of the groove 313. Among them, the bending angle is an obtuse angle. That is to say, the extending surface of the fixing ear 314 forms an obtuse angle with the bottom wall of the groove 313. Since the tightening force of the fastener is perpendicular to the extending surface of the fixing ear, through the above setting, the tightening force forms an acute angle with the bottom wall of the groove. Part of the component force of the tightening force presses the main body against the supporting structure, rather than all acting on the main body to press the main body against the supporting structure, which can reduce the risk of damage to the microcircuit board caused by excessive tightening force acting on the microcircuit board.

[0049] Please continue to refer to Figure 6 Moreover, the cover plate 31 further includes a reinforcing rib 317 disposed on the fixing ear 314. The reinforcing rib 317 extends from the fixing ear 314 to the side wall of the groove 313. The number of the reinforcing ribs 317 is two, and they are oppositely disposed on both side edges of the fixing ear 314. One end of the reinforcing rib 317 is connected to the side wall of the groove 313, and the other end is connected to the inner surface of the fixing ear 314. The side wall of the groove 313 between the two reinforcing ribs 317 is open, which is convenient for fingers to hold the microcircuit board 35 from this opening, so as to take out the microcircuit board 35 from the groove 313.

[0050] In order to facilitate wiring and fixing the cover body, in one embodiment, please refer to Figure 7 As shown, a wire passing notch 242 is provided at one place of the surrounding wall 24, and a fixing notch 243 corresponding to the fixing position 22 is provided at another place. The fixing notch 243 separates the fixing position 22 from the surrounding wall 24. Please combine Figure 5 and Figure 8 As shown, the Hall detection component 30 includes a wire 37 connected to the microcircuit board 35. The wire 37 passes through the wire passing notch 242 and is connected to the main control board of the nail gun 100. The fixing ear 314 is snapped into the fixing notch 243 and is tightly connected to the fixing position 22. The setting of the wire passing notch facilitates the laying of the wire, and the fixing notch facilitates the alignment and positioning of the cover body and the mounting seat, making the installation of the Hall detection component more convenient and reliable.

[0051] Specifically, the fixing position 22 protrudes from the inner wall of the housing 10, and the reinforcing rib 317 is snapped into the fixing notch 243 between the fixing position 22 and the surrounding wall 24, which is convenient for the alignment of the cover body 31 and the mounting seat 20.

[0052] In this embodiment, the wire passing notch 242 is provided on one side of the surrounding wall 24, and the fixing notch 243 is provided on the other side of the surrounding wall 24. The surrounding wall provided with the wire passing notch 242 is adjacent to the surrounding wall provided with the fixing notch 243. It is convenient to observe the wire passing notch and the fixing notch from the same perspective, and the alignment and installation operation of the Hall detection component is smoother.

[0053] In order to ensure the positioning reliability of the Hall sensor, in one embodiment, please refer toFigure 7 The support structure 23 includes stepped surfaces 231 that are arranged at intervals along the surrounding wall 24, and the stepped surfaces 231 are distributed at least at three positions on the surrounding wall 24 that are triangularly distributed. In this embodiment, there are 4 stepped surfaces 231, which are respectively arranged at the 4 corners of the groove 313. Please refer to Figure 8 As shown, the bottom surface of the cover plate 31 and the outer edge surface of the microcircuit board 35 are both in abutting and limiting contact with the stepped surfaces 231, so as to realize the stable support and positioning of the cover plate 31 and the microcircuit board 35 relative to the mounting seat 20, and reduce the risk of displacement of the microcircuit board.

[0054] In other embodiments, the bottom surface of the cover plate 31 is in abutting and limiting contact with the stepped surfaces 231, but the microcircuit board 35 does not contact the stepped surfaces 231. The positioning of the Hall sensor 36 is indirectly realized through the support and limitation of the cover plate 31 relative to the mounting seat 20.

[0055] In order to ensure the reliability of the support of the microcircuit board, in one embodiment, please continue to refer to Figure 7 , the support structure 23 includes support ribs 232 arranged in the middle area of the surrounding wall 24, and the outer surface of the microcircuit board 35 is in abutting and limiting contact with the support ribs 232. Specifically, the above support ribs 232 are long ribs, and at least the middle of the long ribs does not contact the surrounding wall 24. The two ends of the long ribs may or may not contact the surrounding wall 24. The long ribs can provide line contact support for the microcircuit board, so as to support the microcircuit board more stably. The number of long ribs can be 1 or multiple. Two long ribs can be arranged to intersect or not intersect, and there is no limitation here.

[0056] It should be noted that as long as the support ribs are not arranged close to the surrounding wall, they can be understood to be located in the middle area of the surrounding wall.

[0057] In a specific embodiment, the microcircuit board 35 includes opposite first and second side surfaces, and the Hall sensor 36 is arranged on the first side surface. When the microcircuit board 35 is embedded in the groove 313, the first side surface of the microcircuit board 35 faces the bottom wall of the groove, and the second side surface of the microcircuit board 35 faces away from the bottom wall of the groove 313. The Hall sensor 36 is located in the enclosed space surrounded by the groove 313 and the plate surface of the microcircuit board 35. On the one hand, it can protect the Hall sensor 36 from dust, and on the other hand, it can make the second side surface relatively flat, which is convenient for the support and positioning of the second side surface and the support structure 23.

[0058] Specifically, the depth of the groove 313 is substantially the same as the sum of the thickness of the board surface of the microcircuit board 35 and the Hall sensor 36. The microcircuit board 35 is embedded in the groove 313, and the Hall sensor 36 is in contact with the bottom wall of the groove 313. At the same time, the outer edge of the second side surface is substantially flush with the end surface of the cover plate 31 that forms the groove 313 (i.e., the aforementioned bottom side surface). With such a setting, the Hall sensor is in contact with the bottom wall of the groove, which can achieve the bilateral limit of the Hall sensor. At the same time, the outer edge of the second side surface is flush with the end surface of the cover plate, which can realize the positioning and support of the outer edge of the second side surface and the end surface of the cover plate by the step surface together, ensuring the stability of the position of the Hall sensor.

[0059] To ensure the flatness of the second side surface, the support structure design of the microcircuit board is more flexible. Please refer to Figure 4 As shown, the microcircuit board 35 is also provided with a wire passing hole 350. The end of the wire 37 passes through the wire passing hole 350 from one side of the second side surface and extends to the first side surface, and is welded to the pad of the microcircuit board 35. The advantage of such a design is that the welded end of the wire is on the same side as the Hall sensor, making the welding of the Hall sensor and the wire more convenient. Moreover, the wire connection does not affect the flatness of the second side surface, and the support structure design has greater flexibility.

[0060] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or modifications without making creative efforts, and all of them should fall within the protection scope of the present invention.

Claims

1. A nail gun, characterized in that: include: case; A transmission mechanism, disposed on the housing and driven by a power source to perform a nailing motion; A magnetic member, fixedly arranged on the transmission mechanism; A Hall detection component comprises a cover plate and a microcircuit board; the microcircuit board is provided with a Hall sensor for sensing the magnetic member, the cover plate is formed with a groove, the shape of the groove substantially matches the shape of the microcircuit board, and the microcircuit board is embedded in the groove; A mounting seat is arranged on or formed on the shell, and the mounting seat includes a fixing position fixedly connected to the cover plate, a supporting structure supporting the Hall detection component and a surrounding wall arranged around the supporting structure, the supporting structure abuts against the bottom side surface of the Hall detection component, the surrounding wall contacts the circumferential outer wall of the cover plate to limit the cover plate, and the surrounding wall includes at least three contact parts with the circumferential outer wall of the cover plate, and the center points of the three contact parts can form a triangle.

2. The nail gun according to claim 1, characterized in that: The cover plate comprises a main body and a fixing ear arranged on one side of the main body, the groove is arranged on the main body, and the fixing ear is fastened to the fixing position through a fastener.

3. The nail gun according to claim 2, characterized in that: The extended surface of the fixing ear and the bottom wall of the groove are bent, wherein the bending angle is an obtuse angle.

4. The nail gun according to claim 2, characterized in that: A wire passing notch is provided at one place of the surrounding wall, and a fixed notch corresponding to the fixed position is provided at another place, the wire of the Hall detection component passes through the wire passing notch and is connected to the main control board of the nail gun, and the fixing ear is inserted into the fixed notch and is tightly connected to the fixed position.

5. The nail gun according to claim 4, characterized in that: The wire-passing notch and the fixing notch are respectively arranged on two adjacent sides of the surrounding wall.

6. The nail gun according to claim 1, characterized in that: The support structure includes step surfaces arranged at intervals along the surrounding wall, and the step surfaces are distributed at least at three positions of the surrounding wall in a triangular distribution, and the bottom side surface of the cover plate is abutted against the step surfaces for limiting position; or, the bottom side surface of the cover plate and the outer edge surface of the micro circuit board are both abutted against the step surfaces for limiting position.

7. The nailing gun according to claim 1 or 6, characterized in that: The support structure includes support ribs arranged in the middle area of ​​the surrounding wall, and the outer surface of the micro circuit board abuts against the support ribs for limiting position.

8. The nail gun according to claim 1, characterized in that: The first side surface of the micro circuit board faces the bottom wall of the groove, the second side surface of the micro circuit board faces away from the bottom wall of the groove, and the Hall sensor is arranged on the first side surface.

9. The nail gun according to claim 8, characterized in that: The depth of the groove is substantially consistent with the sum of the thickness of the board surface of the microcircuit board and the Hall sensor, and the outer edge of the second side surface is substantially flush with the end surface of the cover plate forming the groove.

10. The nail gun according to claim 8, characterized in that: The microcircuit board is also provided with a wire through hole, and the end of the wire passes through the wire through hole from one side of the second side surface, extends to the first side surface, and is welded to the pad of the microcircuit board.

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