Piston drive assembly, drive control mechanism, and nail gun

Abstract

The present application belongs to the technical field of fastening tools, and particularly relates to a piston driving assembly, a driving control mechanism and a nail gun. The piston driving assembly comprises a pushing member for pushing the piston to move, a driving motor for driving the pushing member to rotate, and a one-way rotation member installed on the output end of the driving motor. The one-way rotation member has a ratchet wheel sleeved on the output end and provided with a plurality of ratchet teeth, a pawl arranged on the side of the ratchet wheel and used for inserting the ratchet teeth to cooperate with the pawl to make the ratchet wheel rotate in one direction, and an elastic member having one end installed on the driving motor and the other end abutting against the pawl. The one-way rotation member is arranged between the driving motor and the pushing member, so that the pushing member can only push the piston in one direction, and the piston can be prevented from being pushed out by the power spring in the middle of movement, so as to ensure the driving force of the nail.

Description

Technical Field

[0001] This invention belongs to the field of fastening tool technology, specifically relating to a piston drive assembly, a drive control mechanism, and a nail gun. Background Technology

[0002] A nail gun is a fastening tool, primarily used in construction. Currently, the most widely used type of nail gun is the electric nail gun, powered by a lithium battery. This type of nail gun is powered by a lithium battery, which drives a motor and a corresponding drive mechanism to push a piston. The piston then compresses a force spring to store energy. When firing a nail, the spring force drives the piston, which in turn drives a firing pin mounted on the piston to strike and eject the nail. In other words, the piston's backward movement is controlled by the motor, while its forward movement is driven by the force spring.

[0003] However, in actual use, the above solution still has shortcomings. For example, the drive motor may slip or reverse during rotation. Once the drive structure reverses, the piston will be pushed out by the force spring midway. At this time, the force spring has not reached its maximum value, which will weaken the force when the nail is fired, resulting in poor nailing effect, or even failure to fire the nail. Summary of the Invention

[0004] To solve the above problems, a piston drive assembly with a unidirectional rotating component, a drive control mechanism, and a nail gun are provided. The present invention adopts the following technical solution:

[0005] This invention provides a piston drive assembly disposed within a nail gun for driving the piston of the nail gun to move toward a force-supplying spring. The assembly comprises: a pushing member for driving the piston to move; a drive motor for driving the pushing member to rotate; and a one-way rotating member mounted on the output end of the drive motor. The pushing member has a pushing end for driving the piston to move, the pushing end having: a first pushing end for linkage with a first abutting end of the piston, and a second pushing end for linkage with a second abutting end of the piston. The one-way rotating member has: a ratchet sleeved on the output end and having several ratchet teeth; a pawl disposed on the side of the ratchet for inserting into the ratchet teeth to engage with it, causing the ratchet to rotate in one direction; and an elastic element, one end mounted on the drive motor and the other end abutting against the pawl.

[0006] The piston drive assembly proposed in this invention may also have the following technical features, wherein the drive motor includes: a motor body having an output shaft, a reducer mounted on the output shaft and having an output end, and two elastic elements and two pawls, which are symmetrically arranged on both sides of the ratchet.

[0007] The piston drive assembly proposed in this invention may also have the following technical features, wherein the elastic element is a pawl spring, one end of which is fixed to the drive motor by a fixing pin, and the other end is bent upward to form a backing piece that can be attached to the pawl.

[0008] The piston drive assembly proposed in this invention may also have the following technical features, wherein the elastic element has a pawl spring and a pawl spring seat, which are fixed to the drive motor by screws, one end of the pawl spring abutting against the pawl spring seat and the other end abutting against the pawl.

[0009] The piston drive assembly proposed in this invention may also have the following technical features, wherein the pushing member further comprises: a crank, the middle of which is mounted on the output end and includes a first crank arm and a second crank arm; a first pushing end is mounted on the first crank arm and a second pushing end is mounted on the second crank arm; the outer diameter of the second pushing end is smaller than the outer diameter of the first pushing end, and the outer edge of the first pushing end protrudes from the outer end of the first crank arm.

[0010] The present invention also proposes a drive control mechanism, which is disposed inside a nail gun with a housing, for controlling and driving the nail of the nail gun to strike out. It has the following technical features: a firing pin assembly, a piston drive assembly for pushing the firing pin assembly to move; an energy storage assembly for storing energy for the piston drive assembly and causing it to move; and a control assembly for controlling the operation of the energy storage assembly, wherein the piston drive assembly is the piston drive assembly as described above.

[0011] The drive control mechanism proposed in this invention may also have the following technical features: the firing pin assembly includes: a piston, movably disposed within a housing; a firing pin, detachably mounted on the piston for impacting a nail; a fixing part is provided on the side of the piston facing the nail; the end of the firing pin is threadedly connected to the fixing part; the energy storage assembly includes: a guide rod, mounted within the housing via a fixing seat, on which a piston is movably disposed; a force spring, sleeved on the outer periphery of the guide rod, one end of which abuts against the piston and is compressed and stores energy under the piston's push; and a guide sleeve, sleeved on the outer periphery of the guide rod and located between the force spring and the guide rod; the control assembly includes: a main switch, having a pressing part and a main switch element; a safety switch, having a toggle part and a safety switch element; the main switch, the safety switch, and the drive motor are connected; when both the main switch element and the safety switch element generate electrical signals, the drive motor operates.

[0012] The drive control mechanism proposed in this invention may also have the following technical features, wherein the actuating part comprises: a lever for contacting the contact point of the safety switch element to generate an electrical signal; a lever, one end of which is linked to a pushing member and the other end of which is linked to the lever, for pushing the lever to disconnect it from the safety switch element; the lever includes: a contact plate for contacting the contact point of the safety switch element; and an actuating plate for contacting the lever. When the contact point of the safety switch element contacts the contact plate, the safety switch element generates an electrical signal; when the contact point of the safety switch element separates from the contact plate, the safety switch element disconnects the electrical signal.

[0013] The drive control mechanism proposed in this invention may also have the following technical features, including: a crank assembly for driving the paddle to link with the safety switch element, and having: an outer crank, the outer end of which extends to the nozzle mechanism of the nail gun, and the inner end linked with the paddle, for making the contact plate contact the touch point of the safety switch element; an inner crank, the outer end of which links with the outer crank, and the inner end for driving the contact plate to contact or separate from the touch point; and a crank return spring provided at the end of the inner crank near the outer crank.

[0014] The present invention also proposes a nail gun having the following technical features, including at least: a housing having an internal mounting cavity, a nozzle mechanism mounted at the front end of the housing, and a drive control mechanism mounted in the mounting cavity, wherein the drive control mechanism is the drive control mechanism as described above.

[0015] Invention Function and Effect

[0016] According to the piston drive assembly, drive control mechanism, and nail gun of the present invention, since a one-way rotating component is provided between the drive motor and the pushing component, the pushing component can only push the piston in one direction, which can better prevent the piston from being pushed out by the force spring during movement, so as to ensure the driving force of the nail. At the same time, the one-way rotating component adopts a ratchet and pawl cooperation method, which is inexpensive, has a good effect in preventing motor reversal, and is very convenient to install and replace. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the nail gun according to Embodiment 1 of the present invention.

[0018] Figure 2 This is a structural diagram of the nail gun after part of the housing has been removed, according to Embodiment 1 of the present invention.

[0019] Figure 3 This is a partial structural diagram of the nozzle mechanism in Embodiment 1 of the present invention.

[0020] Figure 4 This is a structural diagram of the drive control mechanism of Embodiment 1 of the present invention.

[0021] Figure 5 This is a structural diagram of the nozzle mechanism installation according to Embodiment 1 of the present invention.

[0022] Figure 6 This is an exploded view of the piston and pushing component of Embodiment 1 of the present invention.

[0023] Figure 7 This is an exploded view of the firing pin assembly of Embodiment 1 of the present invention.

[0024] Figure 8 This is a schematic diagram of the piston and cylinder head seat installation structure in Embodiment 1 of the present invention.

[0025] Figure 9 This is an installation structure diagram of the unidirectional rotating component and the reducer in Embodiment 1 of the present invention.

[0026] Figure 10 This is one of the process diagrams of the pushing component cooperating with the piston and pushing the piston to move in Embodiment 1 of the present invention.

[0027] Figure 11 This is the second diagram showing the process of the pushing component cooperating with the piston and pushing the piston to move in Embodiment 1 of the present invention.

[0028] Figure 12 This is a schematic diagram of the stroke analysis formed by the interaction between the pushing component and the piston pushing end in Embodiment 1 of the present invention.

[0029] Figure 13 This is a schematic diagram illustrating the stroke analysis formed by the interaction between the control group's pushing component and the piston's pushing end.

[0030] Figure 14 This is a schematic diagram of the structure of the safety switch installed inside the housing according to Embodiment 1 of the present invention.

[0031] Figure 15 yes Figure 14 A magnified view of part A.

[0032] Figure 16 This is a schematic diagram of the structure of the paddle installed in the paddle holder according to an embodiment of the present invention.

[0033] Figure 17 This is an exploded view of the mounting structure of the paddle and paddle holder according to an embodiment of the present invention.

[0034] Figure 18 yes Figure 14 A magnified view of section B.

[0035] Figure 19 This is one of the schematic diagrams showing the installation position of the safety switch and crank assembly in Embodiment 1 of the present invention.

[0036] Figure 20This is the second schematic diagram of the installation position of the safety switch and crank assembly in Embodiment 1 of the present invention.

[0037] Figure 21 This is a schematic diagram of the structure of the safety switch installed inside the housing in Embodiment 2 of the present invention.

[0038] Figure 22 This is a schematic diagram of the installation position of the safety switch and crank assembly in Embodiment 2 of the present invention.

[0039] Figure 23 This is a simplified structural diagram of the unidirectional rotating component mounted on the reducer in Embodiment 3 of the present invention.

[0040] Reference numerals: nail gun 10, housing 20, casing 21, front cover 211, rear cover 212, mounting part 2121, handle 213, base 214, mounting groove 2141, nozzle mechanism 30, magazine 31, nozzle base plate 32, nozzle cover plate 33, nail passage 34, nail drive mechanism 40, piston 41, first push end 411, second push end 412, fixing part 413, straight-line socket 4131, fixing Hole 4132, mounting part 414, mounting base 4141, connecting part 415, force supply spring 42, rear fixing plate 421, guide rod 48, guide sleeve 481, pushing component 43, crank 430, first crank arm 4301, second crank arm 4302, first pushing end 431, second pushing end 432, drive motor 44, motor 441, reducer 442, one-way rotating component 45, ratchet 451, ratchet tooth 4511 Pawl 452, Pawl spring 453, Main switch 46, Pressing part 461, Main switch element 462, Safety switch 47, Toggle part 471, Contact plate 47111, Toggle plate 47112, Connecting plate 47113, Toggle return spring 47114, Toggle lever 4712, First toggle lever 47121, Guide surface 471211, Second toggle lever 47122, Pin 47123, Toggle seat 4713, Spring 47131, socket 47132, safety switch element 472, contact point 4721, front fixing plate 422, mounting plate 4221, screw 4222, through hole 4223, buffer pad 423, striker 49, mounting hole 491, crank assembly 50, outer crank 51, inner crank 52, short side 521, long side 522, contact section 5221, pressure plate 53, protective cover 54, crank return spring 55, lithium battery 60. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes the firing pin assembly, energy storage control mechanism and nail gun of the present invention in detail with reference to the embodiments and accompanying drawings.

[0042] <Example 1>

[0043] This embodiment provides a lithium-ion battery nail gun.

[0044] Figure 1 This is a structural diagram of the nail gun according to Embodiment 1 of the present invention.

[0045] Figure 2 This is a structural diagram of the nail gun after part of the housing has been removed, according to Embodiment 1 of the present invention.

[0046] like Figures 1-2 As shown, the nail gun 10 of this embodiment includes a housing 20, a nozzle mechanism 30, a drive control mechanism 40, and a power supply unit (lithium battery 60). The housing 20 is a casing 21 disposed on the outside. The casing 21 is formed by two front cover plates 211 and a rear cover plate 212 disposed front and rear, which are interlocked. An internal mounting cavity is formed for mounting the drive control mechanism 40. The casing 21 can not only accommodate the drive control mechanism 40 and other internal components, but also protect these internal components. The main casing 21 includes a handle 213 for the user to hold and a base 214 connected to the handle 213. Both the handle 213 and the base 214 are hollow structures. A mounting groove 2141 is provided on the base 214, and the lithium battery 60 can be detachably mounted in the mounting groove 2141. The power supply unit provides power to the entire nail gun; the nozzle mechanism 30 stores the nails and fires them out; the drive control mechanism 40 drives the firing pin to move in a predetermined reciprocating direction, so that it can fire the nails from the nozzle mechanism 30 to achieve nailing.

[0047] Figure 3 This is a partial structural diagram of the nozzle mechanism in Embodiment 1 of the present invention.

[0048] like Figures 2-3 As shown, the nozzle mechanism 30 is located at the front end of the housing 21. The nozzle mechanism 30 has a magazine 31 for storing nails, a nozzle base plate 32 and a nozzle cover plate 33 mounted on the top of the magazine 31. A nail passage 34 is provided between the nozzle base plate 32 and the nozzle cover plate 33 to allow the nails to be ejected. The drive control mechanism 40 is used to strike the nails so that they are ejected from the nail passage 34.

[0049] Figure 4 This is a structural diagram of the drive control mechanism of Embodiment 1 of the present invention.

[0050] like Figure 4As shown, the drive control mechanism 40 includes a firing pin assembly, a piston drive assembly, an energy storage assembly, and a control assembly. The firing pin assembly strikes the nail in the nozzle mechanism of the nail gun. The energy storage assembly stores energy in the firing pin assembly and causes it to move. The control assembly controls the operation of the energy storage assembly. The firing pin assembly has a piston 41 movably disposed within the housing 20 and a firing pin 49 for striking the nail. The piston drive assembly includes a pushing member 43, a drive motor 44 that drives the pushing member 43 to rotate, and a one-way rotating member 45 mounted on the output end 443 of the drive motor 44. The energy storage assembly includes at least one force spring 42, at least one guide rod 48, and at least one guide sleeve 481. The guide rod 48 is installed inside the housing 20 via a fixed seat. The piston 41 is movably mounted on the guide rod 48 and is equipped with a firing pin 49 for striking the nail. The force spring 42 is sleeved on the outer periphery of the guide rod 48, with one end abutting against the piston 41 and being compressed and stored under the push of the piston 41. The outer periphery of the guide rod is also sleeved with a guide sleeve 4221, which is located between the force spring 42 and the guide rod 48.

[0051] Specifically, such as Figure 2 As shown, the mounting base includes a front mounting plate 422 and a rear mounting plate 421 for fixing the front and rear ends of the guide rod 48, respectively. A slot structure is provided inside the mounting cavity of the housing 21. The front mounting plate 422 (in this embodiment, the front mounting plate 422 is a sheet-like structure) is fixed at the front end of the slot structure, and the rear mounting plate 421 (in this embodiment, the rear mounting plate 421 is also a sheet-like structure) is fixed at the rear end. A pair of parallel guide rods 48 are provided between the front mounting plate 422 and the rear mounting plate 421. The piston 41 is located on the side of the guide rod 48 closest to the front mounting plate 422, and the guide rod 48 passes through the piston 41 and is fixed to the front mounting plate 422 by bolts. A buffer pad 423 is also provided between the front mounting plate 422 and the piston 41 to reduce the collision between the piston 41 and the front mounting plate 422 during movement. Figure 4 As shown, this embodiment includes two parallel force-supplying springs 42. The front end of each spring 42 abuts against the piston 41, and the rear end abuts against the rear fixed plate 421. The two springs 42 are respectively sleeved around the outer periphery of two guide rods 48. One end of each guide rod 48 is fixed to the rear fixed plate 421 with screws, and the other end passes through the piston 41 and is fixed to the front fixed plate 422. The guide rods 48 guide the piston 41 to reciprocate in a predetermined direction.

[0052] Similarly, two guide sleeves 481 are provided, which are respectively sleeved on the outer periphery of the two guide rods 48 and located inside the force spring. The length of the guide sleeve 4221 is less than the length of the force spring 42 when it is compressed to the set limit position (the length of the guide sleeve is generally designed so that the guide sleeve and the piston do not interfere when the piston moves to the limit position towards the force spring, and the guide rod is as long as possible, generally greater than the length of the force spring after compression), so that the force spring 42 can be compressed normally. The guide sleeve 481 is a cylindrical shape with a low coefficient of friction (generally made of nylon and polyoxymethylene, but other similar materials can also be used). It is set inside the force supply spring 42. When the force supply spring 42 is compressed or restored, the guide sleeve can move on the guide rod along the compression or restoration direction. The guide sleeve not only guides the force supply spring 42, but also prevents deformation of the force supply spring in other directions, reduces wear of the force supply spring, extends the service life of the force supply spring, and also reduces the frictional force when the force supply spring is compressed, making the compression process of the force supply spring smoother.

[0053] The piston 41 has a firing pin 49 mounted at its front end to strike the nail and launch it. The rear end of the piston 41 cooperates with a force spring 42, which drives the piston 41 to move (i.e., the force spring 42 provides power for the movement of the piston 41). The pushing member 43 has a pushing end facing the piston 41, used to push the piston 41 towards the end where the force spring 42 is located, thereby compressing and storing energy in the force spring 42. Correspondingly, the piston 41 has a pushing end that cooperates with the pushing end. The pushing end has a first pushing end 411 and a second pushing end 412. The first pushing end 411 extends from the piston 41 along the nail-firing direction of the nail gun, and the second pushing end 412 extends from the piston 41 towards the pushing member 43. The pushing end has a first pushing end 431 that cooperates with the first pushing end 411 and a second pushing end 432 that cooperates with the second pushing end 412. Both the first pushing end 431 and the second pushing end 432 are cylindrical structures. During the rotation of the pushing component 43, the first pushing end 431 and the second pushing end 432 can be driven to rotate. The outer diameter of the second pushing end 432 is smaller than the outer diameter of the first pushing end 431, and the height of the second pushing end 432 is also lower than the height of the first pushing end 431.

[0054] Figure 5 This is a structural diagram of the nozzle mechanism installation according to Embodiment 1 of the present invention.

[0055] like Figure 5As shown, in the first embodiment of the front fixing plate 422, the front fixing plate 422 is located in front of the piston 41 along the firing direction, and a mounting plate 4221 is formed by extending forward at the lower end. The nozzle base plate 32 and the nozzle cover plate 33 are fixed above the mounting plate 4221 by bolts. The front end of the firing pin 49 in the middle of the piston 41 passes through the middle of the front fixing plate 422 and is inserted into the nail passage 34 between the nozzle base plate 32 and the nozzle cover plate 33. The left and right sides of the front fixing plate 422 are fixed to the housing by screws 4222.

[0056] Figure 6 This is an exploded view of the piston and pushing component of Embodiment 1 of the present invention.

[0057] Figure 7 This is an exploded view of the firing pin assembly of Embodiment 1 of the present invention.

[0058] Figure 8 This is a schematic diagram of the piston and cylinder head seat installation structure in Embodiment 1 of the present invention.

[0059] like Figures 6-8 As shown, the piston 41 has a fixing part 413 on the side facing the nail, which is used to fix the firing pin 49. The fixing part 413 is generally cylindrical, with a slot 4131 in the middle along the horizontal direction (i.e., the axis of the cylinder), and a fixing hole 4132 is provided through the entire cylinder and the slot 4131 along the vertical direction (i.e., the radial direction of the cylinder). The fixing hole 4132 is a threaded hole with threads. One end of the firing pin 49 is inserted into the slot 4131, and the end of the firing pin 49 has a mounting hole 491 corresponding to the fixing hole 4132. The firing pin 49 is fixed on the fixing part 413 by inserting a bolt 416 or screw into the fixing hole 4132. The firing pin 49 is installed with the piston 41 by means of a threaded connection. This installation method is a detachable installation method. When the firing pin 49 is worn and needs to be replaced, the bolts can be removed to take out the firing pin 49 for replacement. It is very convenient and does not damage the piston. There is no need to replace the piston, which saves costs.

[0060] The rear side of the fixing part 413 is provided with a mounting part 414 for mounting the force supply spring 42. The mounting part 414 consists of two conical mounting seats 4141 (e.g., for mounting the force supply spring) corresponding to the force supply spring. Figure 6 and Figure 8As shown, the cone is specifically cylindrical in the middle, with several triangular reinforcing structures distributed around its outer perimeter. The mounting base 4141 has a wider large end and a narrower small end. The guide sleeve 481 has a central hole in its middle for the guide rod 48 to pass through. The diameter of this central hole is smaller than the diameter of the small end, which can prevent the guide sleeve 481 from getting stuck on the mounting base 4141 of the piston 41 during the movement of the guide rod 48. Through holes 4223 are provided in the middle of the mounting base 4141, at corresponding positions on the front fixing plate 422 and the buffer pad 423. The front ends of the two guide rods 48 pass through the corresponding through holes 4223 and are fixed to the front fixing plate 422.

[0061] The fixing part 413 and the mounting part 414 are connected by a plate-shaped connecting part 415. The lower end of the connecting part 415 extends downward (in the direction of the pushing member 43) to form a second pushing end 412. One side of the second pushing end 412 extends towards the direction of the fixing part 413 to form a first pushing end 411, and the second pushing end 412 is approximately perpendicular to the first pushing end 411. Figure 8 As shown, in the second embodiment of the front fixing plate 422, it is only a square sheet structure. In this case, the nozzle mechanism is directly fixed to the housing 20, without needing to be fixed to the front fixing plate 422. The nozzle base plate 32 can be fixed to the housing 20 with bolts.

[0062] The first push end 431 and the second push end 432 have a cylindrical structure. The push member 43 also has a crank 430, which includes a first crank arm 4301 and a second crank arm 4302. The first push end 431 is installed at the outer end of the first crank arm 4301, and the second push end 432 is installed at the outer end of the second crank arm 4302. The first crank arm 4301 and the second crank arm 4302 are of equal length and form an angle between them. The outer ends of both are arc-shaped. The outer edge of the first push end 431 protrudes from the outer end of the first crank arm 4301, and the outer edge of the second push end 432 is flush with or slightly recessed from the outer end of the second crank arm 4302.

[0063] like Figure 4As shown, the drive motor 44 includes a motor body 441 and a reducer 442. The reducer 442 is mounted on the output shaft of the motor body 441, and a pushing member 43 is mounted on the output shaft of the reducer 442 (i.e., the output end 443 of the drive motor 44). A one-way rotation member 45 is provided between the two. Driven by the motor body 441 and the reducer 442, the pushing member 43 rotates in one direction. In this embodiment, the motor body 441 is a brushless motor. The reducer 442 is mounted on the output shaft of the motor body 441 to reduce the output speed of the motor body 441, thereby obtaining higher output torque, i.e., greater driving force. The one-way rotation member 45 is used to restrict the rotation direction of the output end 443 of the drive motor 44 (i.e., the output shaft of the reducer 442), so that it can only rotate in one direction. The one-way rotation member 45 is mounted on the output shaft of the reducer 442 and forms a hole-shaft fit with the output shaft, so that the output shaft can only rotate in one direction. Simultaneously, when the pushing member 43 is subjected to a driving force that causes it to rotate in the opposite direction, the one-way rotating member 45 bears this driving force, preventing it from being transmitted to the output shaft, thereby protecting the motor body 441. The specific structure of the motor body 441 and the reducer 442 can adopt the structure in the prior art. Furthermore, as... Figure 1 , Figure 2 and Figure 4 As shown, the drive motor and the pushing component 43 are located almost directly below the piston 41, making the entire structure more compact. The gravity is concentrated in the middle of the entire nail gun. Compared with placing the motor and drive components on the side, this is more stable and the force is more even, and it does not take up extra space.

[0064] During installation, a through hole is provided in the middle of the crank 430, at the connection between the first crank arm 4301 and the second push end 432. The crank 430 is installed at the output end of the reducer 442 through this through hole, and the crank 430 can rotate with the motor body 441 and the reducer 442. Designing the push component 43 in the shape of the crank 430 is lighter than the disc structure in the prior art, which not only saves materials but also reduces energy consumption and improves the transmission effect.

[0065] When the pushing member 43 rotates, its first pushing end 431 and second pushing end 432 follow the crank 430 in an arc-shaped motion, and respectively cooperate with the first pushing end 411 and the second pushing end 412 on the piston 41 to push the piston 41 in the energy storage direction. The shape and height of the first pushing end 431 correspond to the arrangement of the first pushing end 411, and the shape and height of the second pushing end 432 correspond to the arrangement of the second pushing end 412.

[0066] Figure 9 This is an installation structure diagram of the unidirectional rotating component and the reducer in Embodiment 1 of the present invention.

[0067] In this embodiment, the one-way rotating member 45 is as follows: Figure 9 The ratchet and pawl structure is shown. The unidirectional rotating component 45 has a ratchet 451, a pawl 452, and an elastic element. One end of the elastic element is mounted on the reducer 442 of the drive motor, and the other end abuts against the pawl 452. In this embodiment, the elastic element is a pawl spring 453. The ratchet 451 is sleeved on the output end 443 and has a plurality of ratchet teeth 4511. The pawl 452 is disposed on the reducer 442 located on the side of the ratchet 451. The pawl 452 is used to insert between the ratchet teeth 4511 and cooperate with them to make the ratchet 451 rotate unidirectionally. One end of the pawl spring 453 is fixed to the reducer 443 by a fixing pin, and the other end is bent upward to form an abutment piece 4531 that can be attached to the pawl 453, so that it always has the tendency to move toward the pawl 452 and insert into the ratchet teeth 4511.

[0068] Figure 10 This is one of the process diagrams of the pushing component cooperating with the piston and pushing the piston to move in Embodiment 1 of the present invention.

[0069] Figure 11 This is the second diagram showing the process of the pushing component cooperating with the piston and pushing the piston to move in Embodiment 1 of the present invention.

[0070] like Figure 10 and Figure 11 As shown, the pushing component 43 rotates clockwise under the drive of the motor body 441. As the pushing component 43 rotates, the second pushing end 432 moves to the second pushing end 412 and abuts against the second pushing end 412. At this time, the pushing component 43 continues to rotate, and the second pushing end 432 makes an arc-shaped movement in a general direction of energy storage. The second pushing end 412 applies an arc-shaped pushing force in a general direction of energy storage to the piston 41. Under the action of this pushing force, the piston 41 can move along the guide rod 48 in the direction of energy storage and compress the force supply spring 42 to store energy.

[0071] The first stage of energy storage is completed when the second pushing end 432 rotates to its maximum stroke in the energy storage direction. At this time, the pushing component 43 continues to rotate, and the second pushing end 432 rotates accordingly and disengages from the second abutting end 412. Simultaneously, the first pushing end 431 rotates to the first abutting end 411 and abuts against it. Subsequently, the first pushing end 431 pushes the piston 41 to move further in the energy storage direction in the same manner until the first pushing end 431 rotates to its maximum stroke in the energy storage direction, completing the second stage of energy storage, thus completing the entire spring energy storage process.

[0072] After the second stage of energy storage is completed, nail firing can begin. During nail firing, the motor body 441 drives the pusher component 43 to continue rotating. The first pusher end 431 rotates accordingly and disengages from the first abutment end 411. At this time, both the first pusher end 431 and the second pusher end 432 are outside the movement path of the piston 41. Therefore, under the action of the force spring 42, the piston 41 can move towards the nail firing direction until the firing pin 49 strikes the nail, causing the nail to be fired, thus completing the nail firing process. During the first or second stage of energy storage, due to the one-way bearing, the crank 430 will not rotate in the opposite direction under the force of the piston 41, thus preventing accidental nail firing.

[0073] The motor body 441 is used to drive the push member 43 to rotate, which in turn pushes the piston 41 to move, causing the force spring 42 to be compressed and stored, and finally the piston 41 is pushed out by the elastic force of the force spring 42.

[0074] Figure 12 This is a schematic diagram of the stroke analysis formed by the interaction between the pushing component and the piston pushing end in Embodiment 1 of the present invention.

[0075] Figure 13 This is a schematic diagram illustrating the stroke analysis formed by the interaction between the control group's pushing component and the piston's pushing end.

[0076] In this embodiment, both the first pushing end 431 and the second pushing end 432 are cylindrical, and the outer diameter of the second pushing end 432 is set to be smaller than the outer diameter of the first pushing end 431. The two outer diameters are not equal. This design, compared to designing them with equal outer diameters, can increase the piston stroke. The inventors conducted the following reference experiment:

[0077] like Figure 12 As shown, in this embodiment, the outer diameter of the first pushing end 431 is 18mm (radius is 9mm), the outer diameter of the second pushing end 432 is 14mm (radius is 7mm), the distance between the first pushing end 411 and the second pushing end 412 of the piston is 35mm, and the working stroke that can be achieved in the experiment is 81.5mm.

[0078] like Figure 13 As shown, as a control group in this embodiment, the outer diameter of the first pushing end 431 and the second pushing end 432 are both 14mm (radius 7mm), the distance between the first pushing end 411 and the second pushing end 412 of the piston is 35mm, and the working stroke that can be achieved in the experiment is 79.5mm, which is significantly smaller than the stroke that can be achieved in this embodiment.

[0079] The calculation method resulting from the above work is as follows:

[0080] The working stroke is S, the distance between the first and second pushing ends of the piston is L, and the included angle between the first pushing end 431 and the second pushing end 432 is n (i.e., the included angle between the first crank arm 4301 and the second pushing end 432). The formula for calculating the arc length swept by the first pushing end 431 and the second pushing end 432 when rotating is: l = nπR / 180°. When the first pushing end 431 and the second pushing end 432 have the same diameter (both with radius R), the piston working stroke is S = L + l = L + (nπR / 180°). When the first pushing end 431 and the second pushing end 432 have unequal diameters (radii R1 and R2 respectively), S = L + l + (R1 - R2). Obviously, when the diameters are unequal, the piston working stroke is (R1 - R2) longer than when the diameters are equal. In other words, without changing the length of the piston's pushing end, the outer diameter of the pushing end is adjusted to obtain the maximum working stroke. The larger the working stroke, the greater the compression of the force spring 42, thus obtaining more energy and enabling the nail to be fired more powerfully and quickly. At the same time, since the nail gun structure needs to be compact, the design length of the nail gun should be minimized, which also facilitates operation, packaging, and transportation.

[0081] like Figure 2 As shown, the drive control mechanism 40 also includes a control component, which includes a main switch 46 and a safety switch 47. The main switch 46 and the safety switch 47 are connected in series and connected to the lithium battery 60 and the motor body 441. When the main switch 46 and the safety switch 47 have electrical signals at the same time, the motor body 441 can be controlled to start running.

[0082] The main switch 46 is a push-button switch, and its specific structure can adopt the structure of existing technology. It has a pressing part 461 and a main switch element 462. When the pressing part 461 is pressed, the main switch element 462 can generate a corresponding start electrical signal. The safety switch 47 is a linkage switch, which has a toggle part 471 and a safety switch element 472. When the safety switch element 472 contacts the toggle part 471, it can generate an electrical signal. In this embodiment, both the main switch element 462 and the safety switch element 472 are microswitches. When both the main switch element 462 and the safety switch element 472 generate electrical signals, the motor body 441 runs, causing it to drive the pushing member 43 to rotate to complete the above-mentioned spring energy storage process.

[0083] Figure 14 This is a schematic diagram of the structure of the safety switch installed inside the housing according to Embodiment 1 of the present invention.

[0084] Figure 15 yes Figure 14 A magnified view of part A.

[0085] Figure 16 This is a schematic diagram of the structure of the paddle installed in the paddle holder according to an embodiment of the present invention.

[0086] Figure 17 This is an exploded view of the mounting structure of the paddle and paddle holder according to an embodiment of the present invention.

[0087] like Figures 14-17 As shown, the actuating part 471 of the safety switch 47 has a lever 4711, a lever 4712, and a lever seat 4713 for mounting the lever 4711. The lever 4711 is located on one side of the safety switch element 472 and is linked with it. The linkage method is as follows: an actuating point 4721 is provided on one side of the safety switch element 472, the lever 4711 is hook-shaped and is mounted on the lever seat 4713, and the lever 4711 has a contact plate 47111, an actuating plate 47112, and a connecting plate 47113 for connecting the contact plate 47111 and the actuating plate 47112. The contact plate 47111 is positioned facing the actuation point 4721 of the safety switch element 472 and is used to contact the actuation point 4721. When the actuation point 4721 contacts the contact plate 47111, the safety switch element generates an electrical signal. The outer end of the toggle plate 47112 extends into a toggle seat 4713 and is used to contact the lever 4712. The length of the contact plate 47111 is less than the length of the toggle plate 47112, and the difference in length between the two forms a gap. Under the push of the lever 4712, the toggle plate 47112 will move towards the toggle seat 4713, thereby moving the contact plate 47111 as well, and gradually separating it from the actuation point 4721. When the actuation point 4721 is in the gap, the safety switch element 472 will disconnect the electrical signal. In order to allow the paddle 4711 to reset, a spring seat 47131 is also provided on the paddle seat 4713. A paddle reset spring 47114 is provided at the inner end of the spring seat 47131 facing the paddle 4711. The paddle reset spring 47114 abuts against the connecting plate 47113 of the paddle 4711.

[0088] Figure 18 yes Figure 14 A magnified view of section B.

[0089] The lever 4712 is a long rod with one end bent, used to control the movement of the paddle 4711. Specifically, the lever 4712 includes a first actuating lever 47121 and a second actuating lever 47122. The end of the first actuating lever 47121 is located near the pushing end of the pushing member 43, and will collide (scratch) during the rotation of the pushing end. The end of the second actuating lever 47122 is located inside the paddle 4711. A pin 47123 is provided at the connecting section where the first actuating lever 47121 and the second actuating lever 47122 are connected. The rear cover plate 212 of the housing 20 has a protruding mounting part 2121 for mounting the pin 47123. The lever 4712 is rotatably mounted on the mounting part 2121 via the pin 47123. In this embodiment, the first actuating lever 47121 and the second actuating lever 47122 are staggered, meaning they are not collinear. The entire lever 4712 is Z-shaped, and the length of the first actuating lever 47121 is less than the length of the second actuating lever 47122. Using the lever principle, if the first actuating lever 47121 is scraped by the pushing end, the second actuating lever 47122 will rotate in the opposite direction to the first actuating lever 47121, thus contacting the paddle 4711 and pushing it. This staggered design allows the first actuating lever 47121 sufficient space to rotate and ensures that the second actuating lever 47122 achieves the required stroke when pushing the paddle 4711.

[0090] Figure 19 This is one of the schematic diagrams showing the installation position of the safety switch and crank assembly in Embodiment 1 of the present invention.

[0091] like Figure 19 As shown, at this time, the safety switch element 472 is in a state with an electrical signal, that is, the contact point 4721 is in contact with the contact plate 47111 of the lever. When the pushing end of the pushing member 43 rotates clockwise, once it scrapes against the first lever 47121, it will cause the first lever 47121 to rotate inward. According to the lever principle, the second lever 47122 will rotate outward, touch the lever plate 47112 of the lever 4711, and push the lever 4711 to move outward, thereby causing the contact plate 47111 to leave the contact point 4721. At this time, the safety switch element 472 disconnects the electrical signal, and the drive motor also stops working immediately.

[0092] Since a toggle return spring 47114 is provided between one side of the toggle 4711 and the toggle seat, when there is no contact between the pushing end and the first toggle end 47121, the toggle return spring 47114 pushes the toggle 4711 inward to reset it, and the first toggle lever 47121 and the second toggle lever 47122 also reset in succession. The outer side of the first toggle lever 47121 may be provided with an inclined guide surface, which makes it easier for the pushing end to collide with the first toggle lever 47121 when rotating.

[0093] Figure 20 This is the second schematic diagram of the installation position of the safety switch and crank assembly in Embodiment 1 of the present invention.

[0094] The drive control mechanism 40 also includes a crank assembly 50, which is used to actuate the paddle 4711 in conjunction with the safety switch element 472. The crank assembly 50 has an outer crank 51 and an inner crank 52, as shown... Figure 1 and Figure 2 As shown, the outer end of the outer curved rod 51 extends out of the housing 20 and is mounted on the nozzle cover plate 33 of the nozzle mechanism via a pressure plate 53, with the outer end protruding from the nozzle mechanism. The inner end of the outer curved rod 51 is inserted into the housing 20 and linked with the inner curved rod 52. Figure 19 and Figure 20 As shown, the inner curved rod 52 has a short side 521 and a long side 522 arranged perpendicularly to each other. The outer side of the short side 521 contacts the inner end of the outer curved rod 51. The long side 522 extends to the vicinity of the paddle seat 4713 and bends at the end toward the paddle seat 4713 to form a contact section 5221. The paddle seat 4713 is provided with a socket 47132. The end of the contact section 5221 is inserted into the socket 47132 so that the contact section 5221 is connected to the paddle seat 4713.

[0095] The linkage between the crank assembly and the safety switch element 472 is as follows:

[0096] When using the nail gun, first align the nozzle mechanism located at the front with the target area to be nailed. Since the outer end of the outer curved rod 51 protrudes from the nozzle mechanism, when the outer end touches the target area, it will generate a reaction force on the outer curved rod 51, causing it to move towards the nail gun. The inner end of the outer curved rod 51 will touch the short side 521 of the inner curved rod 52, thereby pushing the inner curved rod 52 inward. During the movement, the outer curved rod 51 will also move the paddle seat 4713 towards the safety switch. When element 472 moves, the contact plate 47111 on the paddle 4711 in the paddle holder 4713 comes into contact with the contact point 4721 of the safety switch element 472 and presses it, causing the safety switch element 472 to generate an electrical signal. Then, the user presses down the pressing part 461, triggering the main switch element 462 to open and generate an electrical signal. When both switch elements are in the open state, the motor body 441 starts, the force spring begins to store energy, and then the nail is driven out to realize nail shooting.

[0097] like Figure 20 As shown, a crank return spring 55 is provided between the short side 521 of the inner crank 52 and the front fixed plate 422 to cause the crank assembly to reset. After the nail is fired, when the user removes the nail gun and the outer end of the outer crank 51 separates from the target part, the crank return spring 55 will drive the inner crank 52 and the outer crank 51 to reset. A protective cover 54 is also provided at the outer end of the outer crank 51. By having the protective cover 54 in contact with the target part, wear on the outer end of the outer crank 51 can be reduced, extending the service life of the outer crank.

[0098] The working principle of this embodiment:

[0099] When using the nail gun, first align the nozzle mechanism at the front with the target area to be nailed. The outer crank rod 51 is pushed, causing the inner crank rod to move the paddle seat towards the safety switch element 472, triggering the safety switch element 472 to generate an electrical signal. Then, the user activates the main switch element 462, generating an electrical signal. Since both the main switch and the safety switch generate electrical signals, the motor body 441 starts, driving the pushing component 43 to rotate. During rotation, the pushing component 43 causes the piston 41 to move towards the force spring 42, compressing the force spring 42 and gradually performing the first and second stages of energy storage. After the second stage of energy storage is completed, nailing can begin. During nail firing, the motor body 441 drives the pusher component 43 to continue rotating. The first pusher end 431 rotates accordingly and disengages from the first abutment end 411. At this time, both the first pusher end 431 and the second pusher end 432 are outside the movement path of the piston 41. Therefore, the piston 41 can move towards the nail firing direction under the force of the power spring 42 until the firing pin 49 hits the nail, causing the nail to be fired and completing the nail firing process. At the same time, since the outer edge of the first pusher end 431 protrudes from the outer end of the first crank arm 4311, it will rub against the first actuating lever 47121 during rotation, causing the first actuating lever 47121 to rotate inward, causing the second actuating lever 47122 to move outward and hit the paddle 4711, causing the paddle 4711 to move outward, thereby causing the contact plate 47111 to leave the contact point 4721. At this time, the contact point 4721 is exactly aligned with the opening slot 47112, the safety switch element 472 is disconnected, and the motor stops rotating.

[0100] <Example 2>

[0101] Figure 21 This is a schematic diagram of the structure of the safety switch installed inside the housing in Embodiment 2 of the present invention.

[0102] Figure 22 This is a schematic diagram of the installation position of the safety switch and crank assembly in Embodiment 2 of the present invention.

[0103] This embodiment is basically the same as Embodiment 1 above, except for the structure of the actuating part and the crank assembly in the control component. Specifically, as follows: Figure 21As shown, the toggle part 471' of the safety switch 47' has a toggle piece 4711' and a toggle lever 4712'. The toggle piece 4711' is located on one side of the safety switch element 472' and is linked with it. The linkage method is as follows: a switch protrusion 4721' is provided on one side of the safety switch element 472', and a trigger end 47111' is provided on the toggle piece 47111'. When the trigger end 47111' touches the switch protrusion 4721', the safety switch element 472' is triggered to open and generate an electrical signal. An opening slot 47112' is provided on the side of the trigger end 47111'. When the toggle piece 4711' moves, the trigger end 47111' moves away from the switch protrusion 4721', and the switch protrusion 4721' aligns with the opening slot 47112', the safety switch element 472' disconnects the electrical signal.

[0104] like Figure 22 As shown, the actuating lever 4712' is a long rod with one end bent, used to control the movement of the actuating piece 4711'. Specifically, the actuating lever 4712' includes a first actuating end 47121' and a second actuating end 47122'. The end of the first actuating end 47121' is located close to the pushing end of the pushing member 43', and will collide (scratch) during the rotation of the pushing end; the end of the second actuating end 47122' is located inside the actuating piece 4711'. A pin 47123' is provided at the connecting section where the first actuating end 47121' and the second actuating end 47122' are connected. The rear cover plate 212' of the housing has a protruding mounting part for mounting the pin 47123'. The actuating lever 4712' is rotatably mounted on the mounting part through the pin 47123'. (The structure of the actuating lever and its mounting structure with the housing are the same as in Embodiment 1).

[0105] like Figure 22 As shown, when the pushing end of the pushing member 43' rotates clockwise, if it scrapes against the first toggle end 47121', it will cause the first toggle end 47121' to rotate inward, causing the second toggle end 47122' to move outward and touch the toggle piece 4711', causing the toggle piece 4711' to move outward, thereby causing the trigger end 47111' to leave the switch protrusion 4721' and disconnect the safety switch element 472'. A toggle return spring 47113' is provided between the outer side of the toggle piece 4711' and the housing. When there is no contact between the pushing end and the first toggle end 47121', the toggle return spring 47113' pushes the toggle piece 4711' inward to reset, and the first toggle end 47121' and the second toggle end 47122' also reset in succession. An inclined guide surface 471211' is provided on the outer side of the first actuating end 47121', which facilitates the collision between the pushing end and the first actuating end 47121' when rotating.

[0106] The nail drive mechanism 40 also includes a crank assembly 50', which is used to actuate the actuating piece 4711' and the safety switch element 472'. The crank assembly 50' has an outer crank 51' and an inner crank 52'. The outer end of the outer crank 51' extends out of the housing 20 and protrudes from the nozzle mechanism. The inner end of the outer crank 51' is linked to the inner crank 52'. Figure 22 As shown, the inner curved rod 52' has a short side 521' and a long side 522' arranged perpendicularly to each other. The outer side of the short side 521' contacts the inner end of the outer curved rod 51', and the long side 522' extends to the vicinity of the actuating piece 4711' and bends at its end toward the actuating piece 4711' to form a contact section 5221'. A contact plate 47114' is provided on the actuating piece 4711' near the contact section 5221', and an opening slot 47112' is located between the contact plate 47114' and the trigger end 47111'. A crank rod return spring 55' is provided on one side of the contact section 5221'.

[0107] The linkage between the crank assembly and the safety switch element 472' is as follows:

[0108] When using a nail gun, first align the nozzle mechanism located at the front with the target area to be nailed. Since the outer end of the outer curved rod 51' protrudes from the nozzle mechanism, when the outer end touches the target area, it generates a reaction force, causing the outer curved rod 51' to move towards the nail gun. The inner end of the outer curved rod 51' will then contact the short side 521' of the inner curved rod 52', thus pushing the inner curved rod 52' inward. During this movement, the outer curved rod 51' facilitates contact with... Section 5221' contacts the contact plate 47114' on the toggle piece 4711', and presses the toggle piece 4711' towards the safety switch element 472', causing the safety switch element 472' to open and generate an electrical signal. Then, the user presses down the pressing part 461', triggering the main switch element 462' to open and generate an electrical signal. When both switch elements are in the open state, the motor starts, the force spring begins to store energy, and then the nail is driven out, realizing nail shooting. After nail shooting is completed, when the outer end of the outer curved rod 51' separates from the target part, the curved rod return spring 55' will drive the inner curved rod 52' and the outer curved rod 51' to return to their original positions. Similar to Embodiment 1, the outer end of the outer curved rod 51' is also provided with a protective cover 54'. By having the protective cover 54' contact the target part, the wear of the outer end of the outer curved rod 51' can be reduced, extending the service life of the outer curved rod.

[0109] <Example 3>

[0110] Figure 23 This is a simplified structural diagram of the unidirectional rotating component mounted on the reducer in Embodiment 3 of the present invention.

[0111] This embodiment is basically the same as Embodiments 1 and 2 above, except that the elastic element of the unidirectional rotation member 45 is implemented as follows: Figure 23 The structure shown is as follows: the elastic element has a pawl spring 454 and a pawl spring seat 455. The pawl spring seat 455 is fixed to the end face of the reducer 442 of the drive motor by screws. One end of the pawl spring 454 abuts against the pawl spring seat 455 and the other end abuts against the pawl 452. Figure 23 In this embodiment, two pawls 452, two pawl springs 454, and two pawl spring seats 455 are provided and symmetrically distributed on both sides of the ratchet 451. In actual use, one or two can be provided, but using two will provide better anti-reverse effect. Similarly, in embodiment 1, two pawls 452 and two pawl springs 453 can also be provided symmetrically.

[0112] Functions and effects of the embodiments

[0113] According to the piston drive assembly in the above embodiment, since a one-way rotating component 45 is provided between the drive motor 44 and the pushing component 43, the pushing component 43 can only push the piston 41 in one direction, which can better prevent the piston 41 from being pushed out by the force spring 42 during movement, so as to ensure the driving force of the nail. At the same time, the one-way rotating component 45 adopts a ratchet 451 and a pawl 452 working together, which is inexpensive, has a good effect in preventing the motor from reversing, and is very convenient to install and replace.

[0114] According to the firing pin assembly in the above embodiment, the firing pin 49 is installed with the piston 41 by means of a threaded connection. This installation is a detachable installation method. When the firing pin 49 is worn and needs to be replaced, the bolts can be removed to take out the firing pin 49 for replacement, which is very convenient and does not damage the piston. There is no need to replace the piston, which saves costs.

[0115] According to the energy storage component in the above embodiment, since a guide sleeve 481 is provided between the guide rod 48 and the force supply spring 42, the guide sleeve 481 can not only guide the movement direction of the force supply spring 42 and prevent the force supply spring 42 from bending and deforming in other directions when it contracts, but also reduce the wear and friction of the force supply spring 42 during the movement process, so that the service life of the force supply spring 42 is longer, the contraction is smoother, and the energy storage is faster.

[0116] According to the drive control mechanism and nail gun of the above embodiment, since the toggle part 471 of the safety switch 47 has a toggle piece 4711, a lever 4712 and a toggle piece seat 4713, the safety switch 477 is opened and closed by means of mutual linkage between the toggle piece 4711, the lever 4712, the toggle piece seat 4713 and the push member 43. This is a mechanical structure control method, which does not require a separate controller, thereby saving costs and making the operation more stable.

[0117] According to the drive control mechanism and nail gun of the above embodiment, since a pushing member 43 is provided, and the pushing member 43 directly cooperates with the piston 41 to push the piston 41 toward the force spring 42, thereby compressing and storing energy in the force spring 42, and the pushing member 43 has no direct contact with the firing pin 49, the movement of the piston 41 is avoided due to contact with the firing pin 49, making the entire energy storage process smoother and more stable.

[0118] In addition, the pushing member 43 has a pushing end facing the piston 41. The piston is moved by the pushing end contacting the abutting end on the piston 41 during the rotation process. The pushing end has a first pushing end 431 and a second pushing end 432, which can perform the first stage of energy storage and the second stage of energy storage respectively, so as to maximize the energy storage capacity of the force spring 42. At the same time, the outer diameters of the first pushing end 431 and the second pushing end 432 are different, so that the outer diameter of the pushing end can be adjusted to obtain the maximum working stroke of the piston 41 without changing the length of the abutting end of the piston 41. The larger the working stroke, the greater the amount of compression of the force spring 42, thereby obtaining more energy and firing the nail more powerfully and quickly.

[0119] The above embodiment designs the pusher component 43 into the shape of a crank 430, which is lighter than the disc and other structures in the prior art. This not only saves materials but also reduces energy consumption and improves the transmission effect.

[0120] According to the drive control mechanism provided in the above embodiment, it also has a control component, which includes a main switch 46 and a safety switch 47. The two switches are connected in series and connected to the drive motor. Therefore, the motor body 441 of the nail gun 10 can be directly controlled according to the nail-shooting electrical signal and the safety electrical signal generated by the main switch 46 and the safety switch 47. The main switch 46 and the safety switch 47 are connected in series, so the motor body 441 can only be started when the nail-shooting electrical signal and the safety electrical signal are received simultaneously and both signals are valid, thereby performing nail shooting. Since the drive control mechanism adopts a double-switch, double-safety design, the safety during the nail shooting process is also guaranteed. Furthermore, through the drive control mechanism of the above embodiment, the nail gun 10 can activate the safety switch through the crank assembly when it touches the target position, and automatically start accumulating energy when the main switch 46 is pressed, that is, when it is started, and maintain it in the fully charged state. Therefore, the user only needs to press one switch to achieve direct nail dispensing, which is very convenient.

[0121] The above embodiments are only used to illustrate specific implementations of the present invention, and the present invention is not limited to the scope of the description of the above embodiments.

Claims

1. A drive control mechanism, disposed within a nail gun having a housing, for controlling and driving the nail gun to strike the nail out, characterized in that, include: Strike pin assembly A piston drive assembly for pushing the piston of the firing pin assembly toward the force-supplying spring; An energy storage assembly is used to store energy for the piston drive assembly and to cause it to move. A control component is used to control the operation of the energy storage component. The piston drive assembly includes: A pushing component is used to push the piston to move; A drive motor is used to drive the pushing component to rotate; and A one-way rotating component is installed at the output end of the drive motor; The unidirectional rotating component has the following characteristics: A ratchet, fitted onto the output end, has several ratchet teeth. A pawl, disposed on the side of the ratchet, is used to insert into the ratchet teeth and engage with them to allow the ratchet to rotate in one direction; and An elastic element, one end of which is mounted on the drive motor, and the other end of which abuts against the pawl; The control component has the following features: The main switch has a pressing part and a main switch element. A safety switch has an actuating part and safety switching elements. The main switch, the safety switch, and the drive motor are connected together. When both the main switch element and the safety switch element generate electrical signals, the drive motor runs. The actuating part has: A lever is used to contact the actuating point of the safety switch element to generate an electrical signal. A lever, one end of which is linked to a pushing component and the other end of which is linked to a lever, is used to push the lever to disconnect it from the safety switch element. The paddle contains: A contact plate is used to contact the actuating point of the safety switch element. A toggle plate is used to contact the lever. The outer end of the toggle plate extends out to form a paddle seat. When pushed by the lever, the toggle plate moves toward the paddle seat, thereby moving the contact plate as well. When the contact point of the safety switch element comes into contact with the contact plate, the safety switch element generates an electrical signal; when the contact point of the safety switch element separates from the contact plate, the safety switch element disconnects the electrical signal.

2. The drive control mechanism according to claim 1, characterized in that, in, The drive motor includes: The motor body has an output shaft. A speed reducer, mounted on the output shaft, and having the output end. Two elastic elements and two pawls are provided, symmetrically arranged on both sides of the ratchet.

3. The drive control mechanism according to claim 1 or 2, characterized in that, in, The elastic element is a pawl spring, one end of which is fixed to the drive motor by a fixing pin, and the other end is bent upward to form a backing piece that can be attached to the pawl.

4. The drive control mechanism according to claim 1 or 2, characterized in that, in, The elastic element has Pawl spring, A pawl spring seat, which is fixed to the drive motor by screws. One end of the pawl spring abuts against the pawl spring seat, and the other end abuts against the pawl.

5. The drive control mechanism according to claim 1 or 2, Its features are, The pushing component has the following features: A crank, the middle part of which is mounted on the output end, and includes a first crank arm and a second crank arm; The first push end is mounted on the first crank arm and is used to link with the first push end of the piston; as well as The second push end is mounted on the second crank arm and is used to link with the second push end of the piston; The outer diameter of the second pushing end is smaller than the outer diameter of the first pushing end.

6. The drive control mechanism according to claim 1, characterized in that, in, The firing pin assembly has: The piston is movable within the housing. A firing pin, detachably mounted on the piston, is used to strike the nail. The piston has a fixing part on the side facing the nail, and the end of the firing pin is threadedly connected to the fixing part; The energy storage component has: A guide rod is mounted inside the housing via a fixed base, and the piston is movably mounted on it. A force-supplying spring, sleeved on the outer circumference of the guide rod, has one end abutting against the piston and compressing to store energy under the piston's push; and A guide sleeve is fitted around the outer periphery of the guide rod and is located between the force-supplying spring and the guide rod.

7. The drive control mechanism according to claim 6, characterized in that, Also includes: A crank assembly for actuating the paddle to engage with the safety switch element, and having: The outer curved rod extends outward to the nozzle mechanism of the nail gun, and its inner end is linked with the lever, used to bring the contact plate into contact with the actuation point of the safety switch element. The inner curved rod has its outer end linked to the outer curved rod, and its inner end is used to drive the contact plate to contact or separate from the touch point. A crank return spring is provided at one end of the inner crank rod near the outer crank rod.

8. A nail gun, characterized in that, At least including: The housing has an internal mounting cavity. The nozzle mechanism is mounted on the front end of the housing, and The drive control mechanism is installed inside the mounting cavity. The drive control mechanism is the drive control mechanism as described in any one of claims 1-7.

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