CN218802051U

CN218802051U - Piston drive assembly, drive control mechanism and nail gun

Info

Publication number: CN218802051U
Application number: CN202222460859.3U
Authority: CN
Inventors: 杨涛; 李海军; 黄锦全; 周卫荣
Original assignee: Taizhou Dajiang Industry Co Ltd
Current assignee: Taizhou Dajiang Industry Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-04-07
Anticipated expiration: 2032-09-15

Abstract

The utility model belongs to the technical field of fastening tool, concretely relates to piston drive assembly, drive control mechanism and power actuated setting device. The piston drive assembly includes: the pushing component is used for pushing the piston to move; the driving motor is used for driving the pushing component to rotate; and a unidirectional rotation member installed at an output end of the driving motor; wherein the unidirectional rotation member has: the ratchet wheel is sleeved on the output end and is provided with a plurality of ratchets and pawls, and the pawls are arranged on the side edges of the ratchet wheel and are used for being inserted into the ratchets to be matched with the ratchets so as to enable the ratchet wheel to rotate in a single direction; and one end of the elastic piece is arranged on the driving motor, and the other end of the elastic piece is abutted to the pawl. The utility model discloses owing to be provided with the unidirectional rotation component between driving motor and promotion component for the promotion component only can promote the piston towards a direction, can avoid the piston to just be released by the power supply spring midway in removing betterly, with the drive power of guaranteeing to penetrate the nail.

Description

Piston drive assembly, drive control mechanism and nail gun

Technical Field

The utility model belongs to the technical field of fastening tool, concretely relates to piston drive assembly, drive control mechanism and power actuated setting device.

Background

The nail gun is a fastening tool, is mostly used for building construction, at present, a widely used nail gun is an electric nail gun adopting a lithium battery, the nail gun is powered by the lithium battery, a driving motor and a corresponding driving structure push a piston, the piston compresses a force supply spring to store energy, and when a nail is shot, the piston is driven to move by the elasticity of the force supply spring, so that a firing pin arranged on the piston is driven to shoot the shot nail in a striking manner. The backward movement of the piston is controlled by a driving motor, and the forward movement is driven by a force supply spring.

However, in the practical use process, the above solution still has disadvantages, such as: the driving structure is rotated and skidded or reversely rotated with the driving structure, once the driving structure is reversely rotated, the piston is pushed out by the force supply spring in the midway, the elastic force accumulated by the force supply spring does not reach the maximum value at the moment, the force of driving out the nail is weakened, the nailing effect is poor, and even the nail cannot be ejected.

Disclosure of Invention

In order to solve the above problems, the utility model provides a be provided with unidirectional rotating member's piston drive assembly, drive control mechanism and power actuated setting device, the utility model discloses a following technical scheme:

the utility model provides a piston drive assembly sets up in power actuated setting device for the piston that drives power actuated setting device removes towards the confession power spring, has such technical characterstic, include: the pushing component is used for pushing the piston to move; the driving motor is used for driving the pushing component to rotate; and a unidirectional rotation member installed at an output end of the driving motor; wherein the unidirectional rotation member has: the ratchet wheel is sleeved on the output end and provided with a plurality of ratchets and pawls which are arranged on the side edges of the ratchet wheel and are used for inserting the ratchets to be matched with the ratchets so as to enable the ratchet wheel to rotate in a single direction; and one end of the elastic piece is arranged on the driving motor, and the other end of the elastic piece is abutted to the pawl.

The utility model provides a piston drive assembly can also have such technical characteristic, and wherein, driving motor includes: the motor body is provided with an output shaft and a speed reducer, the speed reducer is installed on the output shaft and is provided with an output end, and the elastic piece and the pawls are arranged symmetrically on two sides of the ratchet wheel.

The utility model provides a piston drive assembly can also have such technical characteristic, and wherein, the elastic component is the pawl shell fragment, and its one end is fixed on driving motor through the fixed pin, and the other end makes progress bending type and becomes to paste and establish the support on the pawl and lean on the piece.

The utility model provides a piston drive assembly can also have such technical characteristic, and wherein, the elastic component has pawl spring, the pawl spring holder, and it passes through the fix with screw on driving motor, and pawl spring one end is supported and is established on the pawl spring holder, and the other end is supported and is established on the pawl.

The utility model provides a piston drive assembly can also have such technical characteristic, and wherein, the promotion component has: a crank having a first crank arm and a second crank arm mounted at an output end at a mid-portion thereof; the first pushing end is arranged on the first crank arm and is used for being linked with the first abutting end of the piston; the second pushing end is arranged on the second crank arm and is used for being linked with the second pushing end of the piston; the outer diameter of the second pushing end is smaller than that of the first pushing end.

The utility model also provides a drive control mechanism, set up in the power actuated setting device who has the casing for the rifle nail of control and drive power actuated setting device is hit and is beaten and play, has such technical characteristic, include: the piston driving assembly is used for pushing the firing pin assembly to move; the piston drive assembly comprises an energy storage assembly for storing energy for the piston drive assembly and promoting the piston drive assembly to move, and a control assembly for controlling the energy storage assembly to operate, wherein the piston drive assembly is the piston drive assembly.

The utility model provides a drive control mechanism can also have such technical feature, and wherein, firing pin subassembly has: the piston is movably arranged in the shell, the firing pin is detachably arranged on the piston and used for impacting the gun nail, a fixing part is arranged on one side of the piston facing the gun nail, and the end part of the firing pin is connected to the fixing part through threads; the energy storage component comprises: the guide rod is arranged in the shell through a fixed seat, and a piston is movably arranged on the guide rod; the force supply spring is sleeved on the periphery of the guide rod, one end of the force supply spring is abutted against the piston and is pushed by the piston to carry out compression energy storage; the guide sleeve is sleeved on the periphery of the guide rod and is positioned between the force supply spring and the guide rod; the control assembly has: the main switch has according to splenium and main switch element, and safety switch has toggle portion and safety switch element, and main switch, safety switch and driving motor link, and when main switch element all produced the signal of telecommunication with the safety switch element, driving motor ran.

The utility model provides a drive control mechanism can also have such technical characteristic, and wherein, the portion of stirring has: a poking sheet used for contacting with the contact point of the safety switch element to generate an electric signal, a poking rod, one end of which is linked with the pushing component, the other end is linked with the poking sheet and used for pushing the poking sheet to break the contact with the safety switch element, and the poking sheet comprises: the contact plate is used for contacting with a touch point of the safety switch element, the poking plate is used for contacting with the poking rod, and when the touch point of the safety switch element contacts with the contact plate, the safety switch element generates an electric signal; when the contact point of the safety switch element is separated from the contact plate, the safety switch element disconnects the electrical signal.

The utility model provides a drive control mechanism can also have such technical characteristic, still includes: a crank assembly for pushing the paddle in conjunction with the safety switch element and having: the outer end of the outer curved rod extends out of a gun nozzle mechanism of the nail gun, the inner end of the outer curved rod is linked with the shifting sheet and is used for enabling the contact plate to be in contact with a touch point of the safety switch element, the outer end of the inner curved rod is linked with the outer curved rod, the inner end of the inner curved rod is used for driving the contact plate to be in contact with or separated from the touch point, and a curved rod reset spring is arranged at one end, close to the outer curved rod, of the inner curved rod.

The utility model also provides a power actuated setting device, has such technical characteristic, includes at least: the gun nozzle mechanism comprises a shell, a gun nozzle mechanism and a drive control mechanism, wherein the shell is internally provided with an installation cavity, the gun nozzle mechanism is installed at the front end of the shell, and the drive control mechanism is installed in the installation cavity, wherein the drive control mechanism is the drive control mechanism.

Utility model with the functions and effects

According to the piston driving assembly, the driving control mechanism and the nail gun of the utility model, the unidirectional rotating component is arranged between the driving motor and the pushing component, so that the pushing component can only push the piston towards one direction, and the piston can be better prevented from being pushed out by the force supply spring in the midway of moving so as to ensure the driving force of the nail; meanwhile, the unidirectional rotating component adopts a mode that the ratchet wheel is matched with the pawl, the cost is low, the effect of preventing the motor from reversing is good, and the installation and the replacement are very convenient.

Drawings

Fig. 1 is a structural view of a nail gun according to embodiment 1 of the present invention.

Fig. 2 is a structural view of the nail gun of embodiment 1 of the present invention with a part of the casing removed.

Fig. 3 is a partial configuration diagram of a muzzle mechanism according to embodiment 1 of the present invention.

Fig. 4 is a structural diagram of a drive control mechanism according to embodiment 1 of the present invention.

Fig. 5 is a gun nozzle mechanism mounting structure view according to embodiment 1 of the present invention.

Fig. 6 is an exploded view of the piston and the pushing member according to embodiment 1 of the present invention.

Fig. 7 is an exploded view of the striker assembly according to embodiment 1 of the present invention.

Fig. 8 is a schematic view of an installation structure of the piston and the cylinder head base according to embodiment 1 of the present invention.

Fig. 9 is a mounting structure diagram of the unidirectional rotation member and the speed reducer according to embodiment 1 of the present invention.

Fig. 10 is one of the process diagrams of the pushing member of embodiment 1 of the present invention engaging with the piston and pushing the piston to move.

Fig. 11 is a second process diagram of the pushing member of embodiment 1 of the present invention engaging with the piston and pushing the piston to move.

Fig. 12 is a schematic view of a stroke analysis formed by the mutual cooperation of the pushing member and the piston abutting end according to embodiment 1 of the present invention.

Fig. 13 is a schematic view of the stroke analysis of the control group formed by the mutual cooperation of the pushing member and the pushing end of the piston.

Fig. 14 is a schematic structural view of the safety switch of embodiment 1 of the present invention installed in a housing.

Fig. 15 is a partially enlarged view of fig. 14 at a.

Fig. 16 is a schematic structural view of the pick of the embodiment of the present invention installed in the pick holder.

Fig. 17 is an exploded view of the mounting structure of the pick and the pick holder according to the embodiment of the present invention.

Fig. 18 is a partially enlarged view of fig. 14 at B.

Fig. 19 is one of the schematic installation positions of the safety switch and the crank assembly according to embodiment 1 of the present invention.

Fig. 20 is a second schematic view of the installation position of the safety switch and the crank assembly according to embodiment 1 of the present invention.

Fig. 21 is a schematic structural view of the safety switch according to embodiment 2 of the present invention installed in a housing.

Fig. 22 is a schematic view of the installation position of the safety switch and the crank assembly according to embodiment 2 of the present invention.

Fig. 23 is a schematic view of the structure in which the unidirectional rotation member according to embodiment 3 of the present invention is attached to the speed reducer.

Reference numerals are as follows: the nail gun comprises a nail gun 10, a shell 20, a machine shell 21, a front cover plate 211, a rear cover plate 212, a mounting part 2121, a handle 213, a bottom support 214, a mounting groove 2141, a gun nozzle mechanism 30, a cartridge clip 31, a gun nozzle bottom plate 32, a gun nozzle cover plate 33, a nail passing channel 34, a nail ejecting drive mechanism 40, a piston 41, a first pushing end 411, a second pushing end 412, a fixing part 413, a straight socket 4131, a fixing hole 4132, a mounting part 414, a mounting seat 4141, a connecting part 415, a force supply spring 42, a rear fixing plate crank arm 421, a guide rod 48, a guide sleeve 481, a pushing member 43, a crank 430, a first crank arm 4301, a second crank arm 4302, a first pushing end 431, a second pushing end 432, a drive motor 44, a motor 441, a speed reducer 442, a unidirectional rotation member 45, a ratchet 451, a ratchet 4511, a pawl 452 pawl spring 453, main switch 46, pressing portion 461, main switch element 462, safety switch 47, toggle portion 471, contact plate 47111, toggle plate 47112, connection plate 47113, toggle piece return spring 47114, toggle rod 4712, first toggle rod 47121, guide surface 471211, second toggle rod 47122, pin 47123, toggle piece seat 4713, spring seat 47131, insertion hole 47132, safety switch element 472, toggle point 4721, front fixing plate 422, mounting plate 4221, screw 4222, through hole 4223, cushion 423, striker 49, mounting hole 491, toggle rod assembly 50, outer toggle rod 51, inner toggle rod 52, short edge 521, long edge 522, touching section 5221, pressing plate 53, protective cover 54, toggle rod return spring 55, and lithium battery 60.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the firing pin assembly, the energy storage control mechanism and the nail gun of the present invention are specifically described below with reference to the embodiments and the drawings.

< example 1>

The present embodiment provides a lithium electric nail gun.

As shown in fig. 1 to 2, the nail gun 10 of the present embodiment includes a housing 20, a gun nozzle mechanism 30, a drive control mechanism 40, and a power supply unit (lithium battery 60). The housing 20 is a housing 21 disposed on the outside, the housing 21 is formed by two front cover plates 211 and two rear cover plates 212 disposed in front and rear of each other, and an installation cavity for installing the driving control mechanism 40 is formed inside the housing 21, and the housing 21 can not only accommodate the internal components such as the driving control mechanism 40, but also protect the internal components. The main body housing 21 includes a handle 213 for a user to hold and a bottom support 214 connected to the handle 213, the handle 213 and the bottom support 214 are both hollow structures, the bottom support 214 has a mounting groove 2141, and the lithium battery 60 is detachably mounted on the mounting groove 2141. The power supply unit is used for supplying power to the whole nail gun; the gun nozzle mechanism 30 is used for storing the gun nails and enabling the gun nails to be shot out; the drive control mechanism 40 is adapted to drive the firing pin in a predetermined reciprocating direction to fire the staples from the muzzle mechanism 30 for firing the staples.

Fig. 3 is a partial configuration view of a muzzle mechanism according to embodiment 1 of the present invention.

As shown in fig. 2-3, the gun nozzle mechanism 30 is disposed at the front end of the housing 21, the gun nozzle mechanism 30 has a cartridge 31 for storing the gun nails, a gun nozzle bottom plate 32 and a gun nozzle cover plate 33 mounted on the top of the cartridge 31, a nail passing channel 34 for ejecting the gun nails is disposed between the gun nozzle bottom plate 32 and the gun nozzle cover plate 33, and the driving control mechanism 40 is used for impacting the gun nails to eject the gun nails from the nail passing channel 34.

As shown in fig. 4, the drive control mechanism 40 includes a striker assembly for striking a nail in a gun nozzle mechanism of the nail gun, a piston drive assembly, an energy storage assembly for storing energy for the striker assembly and causing movement thereof, and a control assembly for controlling operation of the energy storage assembly. The striker assembly has a piston 41 movably disposed within the housing 20 and a striker 49 for striking the staple; the piston driving assembly comprises a pushing component 43, a driving motor 44 driving the pushing component 43 to rotate and a one-way rotating component 45 arranged on the output end 443 of the driving motor 44; the energy storage assembly comprises at least one force supply spring 42, at least one guide rod 48 and at least one guide sleeve 481. The guide rod 48 is installed in the housing 20 through a fixed seat, the piston 41 is movably arranged on the guide rod 48 and is provided with a firing pin 49 for striking the gun nail to enable the gun nail to strike, the force supply spring 42 is sleeved on the periphery of the guide rod 48, one end of the force supply spring is abutted to the piston 41 and is pushed by the piston 41 to perform compression energy storage, a guide sleeve 4221 is further sleeved on the periphery of the guide rod, and the guide sleeve 4221 is located between the force supply spring 42 and the guide rod 48.

Specifically, as shown in fig. 2, the fixing base includes a front fixing plate 422 and a rear fixing plate 421 for fixing front and rear ends of the guide rod 48 respectively, a clamping groove structure is disposed in the mounting cavity inside the housing 21, the front fixing plate 422 is fixed to the front end of the clamping groove structure (in this embodiment, the front fixing plate 422 is a sheet structure), the rear fixing plate 421 is fixed to the rear end of the housing (in this embodiment, the rear fixing plate 421 is also a sheet structure), a pair of parallel guide rods 48 is disposed between the front fixing plate 422 and the rear fixing plate 421, the piston 41 is located on a side of the guide rod 48 close to the front fixing plate 422, the guide rod 48 passes through the piston 41 and is fixed to the front fixing plate 422 through a bolt, a cushion 423 is further disposed between the front fixing plate 422 and the piston 41, and the collision between the piston 41 and the front fixing plate 422 is slowed down in the moving process. As shown in fig. 4, in this embodiment, two parallel force-supplying springs 42 are provided, the front ends of the force-supplying springs 42 abut against the piston 41, the rear ends thereof abut against the rear fixing plate 421, the two force-supplying springs 42 are respectively sleeved on the peripheries of the two guide rods 48, one ends of the guide rods 48 are fixed to the rear fixing plate 421 through screws, and the other ends thereof penetrate through the piston 41 and are fixed to the front fixing plate 422. The guide rod 48 serves to guide the piston 41 to reciprocate in a predetermined direction.

Similarly, the two guide sleeves 481 are also provided, and are respectively sleeved on the peripheries of the two guide rods 48 and located inside the power supply spring, and the length of the guide sleeve 4221 is smaller than the length of the power supply spring 42 when being compressed to a set limit position (when the length of the guide sleeve is designed, generally, when the piston moves to the limit position towards one side of the power supply spring, the guide sleeve and the piston do not interfere with each other, the longer the guide rod is, the better the guide rod is, the longer the guide rod is generally, the length of the guide rod is greater than the length of the power supply spring after being compressed), so that the power supply spring 42 can be normally compressed. Guide sleeve 481's for the cylinder shape (generally adopt nylon and polyformaldehyde to make, also can replace with other similar materials) that has less coefficient of friction, it sets up in the inside of supplying power spring 42, when supplying power spring 42 when compressed or resume, the guide sleeve can move on the guide bar along compression or resume direction, the guide sleeve not only can play the effect of direction to supplying power spring 42, can also prevent the deformation of supplying power spring in other directions, reduce the wearing and tearing of supplying power spring, the life of extension supplying power spring, frictional force when simultaneously can also reducing the compression of supplying power spring, make supplying power spring compression process more smooth and easy.

The front end of the piston 41 is provided with a striker 49 for striking the gun nail to fire the gun nail, and the rear end of the piston 41 is matched with the force supply spring 42, so that the piston 41 can be driven to move by the force supply spring 42 (namely, the force supply spring 42 is used for providing power for the movement of the piston 41). The pushing member 43 has a pushing end facing the piston 41 for pushing the piston 41 toward the end where the force supply spring 42 is located, thereby allowing the force supply spring 42 to perform compression energy storage. Correspondingly, the piston 41 is provided with a pushing end matched with the pushing end, the pushing end is provided with a first pushing end 411 and a second pushing end 412, the first pushing end 411 extends out from the piston 41 along the nail-shooting direction of the nail-shooting gun, and the second pushing end 412 extends out from the piston 41 towards the pushing member 43. The pushing end has a first pushing end 431 matching with the first pushing end 411 and a second pushing end 432 matching with the second pushing end 412, the first pushing end 431 and the second pushing end 432 are both cylindrical structures, the pushing member 43 can drive the first pushing end 431 and the second pushing end 432 to rotate in the rotating process, the outer diameter of the second pushing end 432 is smaller than that of the first pushing end 431, and the height of the second pushing end 432 is also lower than that of the first pushing end 431.

Fig. 5 is a gun nozzle mechanism installation structure diagram of embodiment 1 of the present invention.

As shown in fig. 5, as a first embodiment of the front fixing plate 422, the front fixing plate 422 is located forward of the piston 41 in the striking direction, and a mounting plate 4221 is formed by extending forward near the lower end portion, the gun nozzle bottom plate 32 and the gun nozzle cover plate 33 are fixed above the mounting plate 4221 by bolts, the front end of the striker 49 at the middle portion of the piston 41 passes through the middle portion of the front fixing plate 422 and is inserted into the nail passing passage 34 between the gun nozzle bottom plate 32 and the gun nozzle cover plate 33, and the left and right sides of the front fixing plate 422 are fixed to the housing by screws 4222.

As shown in fig. 6 to 8, the fixing portion 413 is provided on the side of the piston 41 facing the gun nail for fixing the striker 49, the fixing portion 413 is generally shaped like a cylinder, a straight socket 4131 is formed in the middle portion of the fixing portion 413 in the horizontal direction (i.e., the axial direction of the cylinder), a fixing hole 4132 is formed in the vertical direction (i.e., the radial direction of the cylinder) through the entire cylinder and the straight socket 4131, the fixing hole 4132 is a threaded hole with threads, one end of the striker 49 is inserted into the straight socket 4131, and the end of the striker 49 is formed with a mounting hole 491 corresponding to the fixing hole 4132, and is inserted into the fixing hole 4132 by a bolt 416 or a screw, thereby fixing the striker 49 to the fixing portion 413. The striker 49 is mounted between the striker 49 and the piston 41 in a threaded connection mode, the mounting is a detachable mounting mode, when the striker 49 is worn and needs to be replaced, the striker 49 can be taken out for replacement only by detaching a bolt, the convenience is high, the piston is not damaged, the piston does not need to be replaced, and the cost is saved.

The rear side of fixed part 413 is provided with installation department 414 that is used for installing confession power spring 42, installation department 414 is two conical mount pads 4141 that correspond the confession power spring setting (as shown in fig. 6 and 8, the concrete shape of this toper is that the middle part is cylindrical, the cylindrical periphery distributes and has a plurality of reinforcing structure that are triangle-shaped), mount pad 4141 contains the great main aspects of width and the less tip of width, the centre bore that supplies guide bar 48 to pass is seted up at the middle part of uide bushing 481, the aperture of this centre bore is less than the diameter of tip, can avoid uide bushing 481 to block on the mount pad 4141 of piston 41 in the in-process that guide bar 48 moved. Through holes 4223 are formed in the middle of the mounting seat 4141 and at corresponding positions of the front fixing plate 422 and the cushion pad 423, and the front ends of the two guide rods 48 are fixed to the front fixing plate 422 through the corresponding through holes 4223.

The fixing portion 413 and the mounting portion 414 are connected by a plate-shaped connecting portion 415, a lower end of the connecting portion 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 toward the fixing portion 413 to form a first pushing end 411, and the second pushing end 412 is substantially perpendicular to the first pushing end 411. As shown in fig. 8, the second embodiment of the front fixing plate 422 is only a square plate structure, in which case, the gun nozzle mechanism is directly fixed to the casing 20, and the gun nozzle bottom plate 32 is fixed to the casing 20 by bolts without being fixed to the front fixing plate 422.

The first pushing end 431 and the second pushing end 432 are cylindrical structures, the pushing member 43 further comprises a crank 430 which comprises a first crank arm 4301 and a second crank arm 4302, the first pushing end 431 is mounted at the outer end of the first crank arm 4301, the second pushing end 432 is mounted at the outer end of the second crank arm 4302, the first crank arm 4301 and the second crank arm 4302 are equal in length, an included angle is formed between the first crank arm 4301 and the second crank arm 4302, the outer ends of the first crank arm 4301 and the second crank arm 4302 are arc-shaped, the outer edge of the first pushing end 431 protrudes out of the outer end of the first crank arm 4301, and the outer edge of the second pushing end 432 is flush with or slightly recessed from the outer end of the second crank arm 4302.

As shown in fig. 4, the driving motor 44 includes a motor body 441 and a speed reducer 442, the speed reducer 442 is mounted on an output shaft of the motor body 441, the pushing member 43 is mounted on an output shaft of the speed reducer 442 (i.e., an output end 443 of the driving motor 44), and a unidirectional rotating member 45 is disposed between the pushing member and the speed reducer 442, and the pushing member 43 is driven by the motor body 441 and the speed reducer 442 to rotate in a unidirectional manner. The motor body 441 of the present embodiment is a brushless motor. The speed reducer 442 is mounted on an output shaft of the motor body 441 for reducing an output rotation speed of the motor body 441, thereby obtaining a higher output torque, that is, a greater driving force. The unidirectional rotation member 45 is used to restrict the rotation direction of the output end 443 of the driving motor 44 (i.e., the output shaft of the reducer 442) so that the unidirectional rotation is possible. The unidirectional 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 perform only unidirectional rotation. Meanwhile, when the urging member 43 receives an urging force that causes it to rotate in the reverse direction, the one-way rotation member 45 receives the urging force, so that the urging force is not transmitted to the output shaft, thereby protecting the motor body 441. The specific structure of the motor body 441 and the speed reducer 442 can adopt the structure in the prior art. As shown in fig. 1, 2 and 4, the driving motor and the pushing member 43 are both located almost right under the piston 41, so that the whole structure is more compact, the gravity is concentrated in the middle of the whole nail gun, and compared with the case that the motor and the driving part are arranged on the side surface, the structure is more stable and the stress is more uniform, and no redundant space is occupied.

During installation, a through hole is formed in the middle of the crank 430 at the joint between the first crank arm 4301 and the second pushing end 432, the crank 430 is installed at the output end of the reducer 442 through the through hole, and the crank 430 can rotate along with the motor body 441 and the reducer 442. The pushing member 43 is designed to be in the shape of the crank 430, and compared with structures such as a disc in the prior art, the structure is lighter, materials can be saved, energy consumption can be reduced, and the transmission effect is better.

When the pushing member 43 rotates, the first pushing end 431 and the second pushing end 432 thereof follow the crank 430 to perform an arc motion, and cooperate with the first abutting end 411 and the second abutting end 412 on the piston 41 respectively to push the piston 41 toward 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.

Fig. 9 is a view showing an installation structure of the unidirectional rotation member and the speed reducer according to embodiment 1 of the present invention.

In the present embodiment, the unidirectional rotation member 45 is a ratchet and pawl structure as shown in fig. 9. The unidirectional rotation member 45 includes a ratchet 451, a pawl 452, and an elastic member, one end of which is mounted on the speed reducer 442 of the driving motor, and the other end of which abuts against the pawl 452. In this embodiment, the elastic member 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 speed reducer 442 located on a side of the ratchet 451, the pawl 452 is used for being inserted between the ratchet teeth 4511 and matching with the ratchet teeth 4511 to enable the ratchet 451 to rotate in a single direction, one end of the pawl spring 453 is fixed on the speed reducer 443 through a fixing pin, and the other end of the pawl spring is bent upwards to form an abutting piece 4531 which can be attached to the pawl 453, so that the pawl spring 453 always tends to move towards the pawl 452 and be inserted into the ratchet teeth 4511.

As shown in fig. 10 and 11, the pushing member 43 is driven by the motor body 441 to rotate clockwise, and along with the rotation of the pushing member 43, the second pushing end 432 moves to the second abutting end 412 and abuts against the second abutting end 412, at this time, the pushing member 43 continues to rotate, the second pushing end 432 performs an arc-shaped motion approximately facing the energy storage direction, an arc-shaped pushing force approximately facing the energy storage direction is applied to the piston 41 through the second abutting end 412, the piston 41 can move towards the energy storage direction along the guide rod 48 under the action of the pushing force, and the force supplying spring 42 is compressed to store energy.

The second pushing end 432 completes the first stage of energy storage when rotating to the maximum stroke along the energy storage direction. At this time, the pushing member 43 continues to rotate, the second pushing end 432 rotates therewith and disengages from the second abutting end 412, meanwhile, the first pushing end 431 rotates to the first abutting end 411 and abuts against the first abutting end 411, and then the first pushing end 431 pushes the piston 41 to further move toward the energy storage direction in the same manner until the first pushing end 431 rotates to the maximum stroke along the energy storage direction, so as to complete the second stage of energy storage, thereby completing the whole spring energy storage process.

After the second section of energy storage is completed, the nail can be shot. When the nail is fired, the motor body 441 drives the pushing member 43 to rotate continuously, the first pushing end 431 rotates along with the pushing member and is separated from the first abutting end 411, and at this time, the first pushing end 431 and the second pushing end 432 are both located outside the moving path of the piston 41, so that the piston 41 can move towards the nail firing direction under the action of the elastic force of the force supply spring 42 until the striker 49 impacts the nail to eject the nail, thereby completing the nail firing process. When the first stage energy storage or the second stage energy storage is performed, due to the arrangement of the one-way bearing, the crank 430 does not rotate in the reverse direction under the acting force of the piston 41, so that the nail is not shot by mistake.

The motor body 441 is used for driving the pushing member 43 to rotate, so as to push the piston 41 to move through the pushing member 43, so that the force supply spring 42 is compressed to store energy, and finally the piston 41 is pushed out through the elastic force of the force supply spring 42.

The first pushing end 431 and the second pushing end 432 of the present embodiment are both 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, and the outer diameters of the first pushing end 431 and the second pushing end 432 are not equal to each other. The utility model people has carried out the reference experiment to this as follows:

as shown in fig. 12, in the present embodiment, the outer diameter of the first pushing end 431 is 18mm (the radius is 9 mm), the outer diameter of the second pushing end 432 is 14mm (the radius is 7 mm), the distance between the first abutting end 411 and the second abutting end 412 of the piston is 35mm, and the working stroke that can be achieved by the experiment is 81.5mm.

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

The operation mode formed by the above work is as follows:

the working stroke is S, the distance between the first pushing end and the second pushing end of the piston is L, 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), and the arc length around when the first pushing end 431 and the second pushing end 432 rotate is calculated as: l = n π R/180 °; when the first pushing end 431 and the second pushing end 432 are in the same diameter (the radii are both R), the working stroke of the piston is S = L + L = L + (n pi R/180 °); the first and second pushing ends 431, 432 are not of equal diameter (radii R1 and R2, respectively) S = L + (R1-R2). It is clear that in the case of unequal diameters, the working stroke of the piston is increased by a distance (R1-R2) compared to the case of equal diameters. That is to say, the maximum working stroke is obtained as much as possible by adjusting the outer diameter of the pushing end without changing the length of the pushing end of the piston, and the larger the working stroke is, the larger the amount of compression of the force supply spring 42 is, so that the larger energy can be obtained, and the gun nail can be ejected more powerfully and rapidly. Meanwhile, the nail gun is compact in structure, so that the design length of the nail gun is reduced as much as possible, and the nail gun is also beneficial to operation, packaging and transportation.

As shown in fig. 2, the driving control mechanism 40 further includes a control component, the control component 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, and when the main switch 46 and the safety switch 47 have electric signals at the same time, the motor body 441 can be controlled to start and operate.

The main switch 46 is a push-button type switch, and the specific structure can adopt the structure in the prior art, and includes a pressing portion 461 and a main switch element 462, and the main switch element 462 can generate a corresponding starting electrical signal when the pressing portion 461 is pressed down; the safety switch 47 is a linkage switch, and has a toggle portion 471 and a safety switch element 472, and the safety switch element 472 can generate an electrical signal when contacting the toggle portion 471. In the present embodiment, the main switch element 462 and the safety switch element 472 are both micro switches. When the main switch element 462 and the safety switch element 472 both generate electric signals, the motor body 441 operates to drive the pushing member 43 to rotate to complete the spring energy storage process.

Fig. 15 is a partially enlarged view of fig. 14 at a.

As shown in fig. 14 to 17, the toggle part 471 of the safety switch 47 has a toggle piece 4711, a toggle lever 4712 and a toggle piece seat 4713 for mounting the toggle piece 4711, and the toggle piece 4711 is located on the side of the safety switch element 472 and is interlocked therewith. The linkage mode is as follows: one side of the safety switching element 472 is provided with a contact point 4721, a paddle 4711 is of a hook type and mounted on a paddle mount 4713, and the paddle 4711 has a contact plate 47111, a paddle 47112, and a connecting plate 47113 for connecting the contact plate 47111 and the paddle 47112. A contact plate 47111 is disposed toward a contact point 4721 of the safety switch element 472 for contact with the contact point 4721, the safety switch element generating an electrical signal when the contact point 4721 is in contact with a contact plate 47111; the outer end of the driver plate 47112 extends out of the driver plate seat 4713 and is used for contacting with the driver plate 4712, the length of the contact plate 47111 is smaller than the length of the driver plate 47112, the length difference between the two forms a gap portion, under the pushing of the driver plate 4712, the driver plate 47112 will move towards the side of the driver plate seat 4713, so as to bring the contact plate 47111 to move and gradually separate from the contact point 4721, and when the contact point 4721 is located in the gap portion, the safety switch element 472 will disconnect the electric signal. In order to return the paddle 4711, a spring seat 47131 is provided on the paddle seat 4713, a paddle return spring 47114 is provided at an inner end of the spring seat 47131 toward one end of the paddle 4711, and the paddle return spring 47114 abuts against a connecting plate 47113 of the paddle 4711.

Fig. 18 is a partially enlarged view of fig. 14 at B.

The shift lever 4712 is in the shape of a long rod with one end bent to control the movement of the shift piece 4711. The method comprises the following specific steps: the shift lever 4712 comprises a first shift lever 47121 and a second shift lever 47122, the end of the first shift lever 47121 is arranged close to the pushing end of the pushing member 43, and collision (scratch) can be generated in the rotating process of the pushing end; the end of the second tap lever 47122 is located inside the finger 4711, a pin 47123 is provided at the connecting section where the first tap lever 47121 and the second tap lever 47122 are connected, a mounting portion 2121 for the pin 47123 is provided in the protruding manner inside the rear cover plate 212 of the housing 20, and the tap lever 4712 is rotatably mounted on the mounting portion 2121 through the pin 47123. Meanwhile, in this embodiment, the first tap lever 47121 and the second tap lever 47122 are arranged in a staggered manner, that is, the first tap lever 47121 and the second tap lever 47122 are not collinear, the whole tap lever 4712 is in a shape similar to a Z, the length of the first tap lever 47121 is smaller than the length of the second tap lever 47122, and once the first tap lever 47121 is cut and rubbed by a pushing end, the second tap lever 47122 and the first tap lever 47121 rotate in the opposite direction, so that the tap 4711 is touched and the tap 4711 is pushed. The two are designed to be offset in order to allow the first tap lever 47121 to have enough space during rotation and to allow the second tap lever 47122 to obtain the required stroke when pushing the finger 4711.

As shown in fig. 19, when the safety switch element 472 is in a state of having an electrical signal, that is, the touch point 4721 is in contact with the contact plate 47111 of the paddle, when the pushing end of the pushing member 43 rotates clockwise, once the pushing end is scraped to the first moving rod 47121, the first moving rod 47121 is forced to rotate inwards, according to the lever principle, the second moving rod 47122 rotates outwards, and hits against the paddle 47112 of the paddle 4711, and pushes the paddle 4711 to move outwards, so that the contact plate 47111 is separated from the touch point 4721, and at this time, the safety switch element 472 disconnects the electrical signal, and the driving motor also stops working immediately.

Because a toggle reset spring 47114 is arranged between one side of the toggle piece 4711 and the toggle piece seat, when the pushing end is not in contact with the first toggle end 47121, the toggle reset spring 47114 pushes the toggle piece 4711 inwards to reset, and the first toggle rod 47121 and the second toggle rod 47122 are also reset in succession. The outside of the first tap lever 47121 can be provided with an inclined guide surface to facilitate the collision of the pushing end with the first tap lever 47121 during rotation.

The drive control mechanism 40 also includes a curved lever assembly 50, the curved lever assembly 50 being used to push the paddle 4711 in conjunction with the safety switch element 472. The curved rod assembly 50 has an outer curved rod 51 and an inner curved rod 52, as shown in fig. 1 and 2, the outer end of the outer curved rod 51 extends out of the casing 20 and is mounted on the muzzle cover 33 of the muzzle mechanism through a pressing plate 53, the outer end of the outer curved rod protrudes out of the muzzle mechanism, and the inner end of the outer curved rod 51 is inserted into the casing 20 and is linked with the inner curved rod 52. As shown in fig. 19 and 20, the inner curved rod 52 has a short side 521 and a long side 522 which are perpendicular to each other, the outer side of the short side 521 contacts with the inner end of the outer curved rod 51, the long side 522 extends to the vicinity of the pick holder 4713, and is bent at the end toward the pick holder 4713 to form a touching section 5221, the pick holder 4713 is provided with an insertion hole 47132, and the end of the touching section 5221 is inserted into the insertion hole 47132 so that the touching section 5221 is connected with the pick holder 4713.

The linkage of the crank assembly to the safety switch element 472 is specifically as follows:

when the nail gun is used, firstly, a gun nozzle mechanism positioned on the front side is aligned to a target position needing to shoot nails, because the outer end part of the outer curved rod 51 protrudes out of the gun nozzle mechanism, when the outer end part is propped against the target position, a reaction force is generated on the outer curved rod 51, so that the outer curved rod 51 moves towards one side of the nail gun, the inner end of the outer curved rod 51 touches the short edge 521 of the inner curved rod 52, so that the inner curved rod 52 is pushed to move inwards, the outer curved rod 51 drives the plectrum seat 4713 to move towards the safety switch element 472 in the moving process, so that the contact plate 47111 on the plectrum 4711 in the plectrum seat 4713 contacts with and presses the touch point 4721 of the safety switch element 472, and the safety switch element 472 generates an electric signal; then, a user presses the pressing part 461 to trigger the main switch element 462 to be turned on to generate an electric signal, when the two switch elements are both in an on state, the motor body 441 is turned on to allow the force spring to start energy storage, and then the gun nail is struck out to realize nail shooting.

As shown in fig. 20, a curved rod return spring 55 for urging the curved rod assembly to return is provided between the short side 521 of the inner curved rod 52 and the front fixing plate 422, and when the user takes down the nail gun after the completion of the nail driving and separates the outer end of the outer curved rod 51 from the target portion, the curved rod return spring 55 drives the inner curved rod 52 and the outer curved rod 51 to return. The outer end part of the outer curved rod 51 is also provided with a protective cover 54, and the protective cover 54 is contacted with a target part, so that the abrasion of the outer end of the outer curved rod 51 can be reduced, and the service life of the outer curved rod is prolonged.

The working principle of the embodiment is as follows:

when the nail gun is used, the gun nozzle mechanism on the front side is aligned to a target position to be nailed, the outer curved rod 51 is pushed, the inner curved rod drives the shifting sheet seat to move towards the safety switch element 472, the safety switch element 472 is enabled to be started to generate an electric signal, then a user starts the main switch element 462 to generate an electric signal, and at the moment, the main switch and the safety switch generate electric signals, so that the motor body 441 is started to drive the pushing member 43 to rotate. The pushing member 43 urges the piston 41 to move toward the power supply spring 42 during the rotation, thereby compressing the power supply spring 42 and performing the first stage energy storage and the second stage energy storage step by step. After the second section of energy storage is completed, the nail can be shot. When the nail is fired, the motor body 441 drives the pushing member 43 to rotate continuously, the first pushing end 431 rotates along with the pushing member and is separated from the first abutting end 411, and at this time, the first pushing end 431 and the second pushing end 432 are both located outside the moving path of the piston 41, so that the piston 41 can move towards the nail firing direction under the action of the elastic force of the force supply spring 42 until the striker 49 impacts the nail to eject the nail, thereby completing the nail firing process. Meanwhile, as the outer edge of the first pushing end 431 is arranged to protrude out of the outer end of the first crank arm 4311, the first pushing end 431 is scraped to the first poke rod 47121 in the rotating process, the first poke rod 47121 is caused to rotate inwards, the second poke rod 47122 is poked outwards and touches the poke piece 4711, the poke piece 4711 is caused to move outwards, the contact plate 47111 is caused to leave the touch point 4721, and the touch point 4721 is just aligned with the open groove 47112 at the moment, the safety switch element 472 is disconnected, and the motor stops rotating.

< example 2>

This embodiment is basically the same as embodiment 1, except for the structure of the toggle part and the crank assembly in the control assembly. The method comprises the following specific steps: as shown in fig. 21, the toggle part 471 'of the safety switch 47' has a toggle piece 4711 'and a toggle lever 4712', and the toggle piece 4711 'is located on the side of the safety switch element 472' and is interlocked therewith. The linkage mode is as follows: one side of the safety switch element 472' is provided with a switch projection 4721', the dial 4711' is provided with an trigger end 47111', and when the trigger end 47111' touches the switch projection 4721', the safety switch element 472' can be triggered to be opened to generate an electric signal. The side of the trigger end 47111 'is provided with an open slot 47112', and the safety switch element 472 'breaks the electrical signal when the paddle 4711' is moved, the trigger end 47111 'is moved away from the switch protrusion 4721' and the switch protrusion 4721 'is aligned with the open slot 47112'.

As shown in fig. 22, the tap lever 4712 'has a long bar shape with one end bent, and is used to control the movement of the tap piece 4711'. The method comprises the following specific steps: the poke rod 4712' comprises a first poke end 47121' and a second poke end 47122', the end of the first poke end 47121' is arranged close to the pushing end of the pushing member 43', and collision (scratch) can be generated in the rotating process of the pushing end; the end of the second dial end 47122' is located on the inner side of the dial piece 4711', a pin 47123' is arranged at the connecting section where the first dial end 47121' and the second dial end 47122' are connected, a mounting part for mounting the pin 47123' is arranged in a protruding mode in the rear cover plate 212' of the shell, and the dial rod 4712' is rotatably mounted on the mounting part through the pin 47123 '. (the construction of the tap lever and its mounting structure to the housing are the same as those of embodiment 1).

As shown in fig. 22, when the pushing end of the pushing member 43' rotates clockwise, once the pushing end rubs against the first poking end 47121', the first poking end 47121' is caused to rotate inward, so that the second poking end 47122' pokes outward, hits the poking piece 4711', and the poking piece 4711' is caused to move outward, so that the triggering end 47111' is caused to leave the switch projection 4721', and the safety switch element 472' is turned off. A toggle reset spring 47113' is arranged between the outer side of the toggle piece 4711' and the shell, when the pushing end is not in contact with the first toggle end 47121', the toggle reset spring 47113' pushes the toggle piece 4711' inwards to reset, and the first toggle end 47121' and the second toggle end 47122' are also reset in sequence. The outer side of the first toggle end 47121' is provided with an inclined guide surface 471211' to facilitate the pushing end to collide with the first toggle end 47121' when rotating.

The drive mechanism 40 also includes a curved rod assembly 50', the curved rod assembly 50' being used to push the paddle 4711 'into linkage with the safety switch element 472'. The curved bar assembly 50' has an outer curved bar 51' and an inner curved bar 52', the outer end of the outer curved bar 51 extending out of the housing 20 and the outer end protruding out of the muzzle mechanism, the inner end of the outer curved bar 51' being interlocked with the inner curved bar 52 '. As shown in fig. 22, the inner curved bar 52' has a short side 521' and a long side 522' which are perpendicular to each other, the outer side of the short side 521' is in contact with the inner end of the outer curved bar 51', and the long side 522' extends to the vicinity of the dial 4711' and is bent at the end toward the dial 4711' to form a touching section 5221'. The shift plate 4711 'is provided with a touch plate 47114' at a position close to the touch section 5221', an open groove 47112' is positioned between the touch plate 47114 'and the touch end 47111', and one side of the touch section 5221 'is provided with a curved rod return spring 55'.

The linkage of the crank assembly with the safety switch element 472' is as follows:

when the nail gun is used, the gun nozzle mechanism on the front side is aligned with a target part needing to shoot nails, because the outer end of the outer curved rod 51 'protrudes out of the gun nozzle mechanism, when the outer end is propped against the target part, a reaction force is generated on the outer curved rod 51', the outer curved rod 51 'moves towards one side of the nail gun, the inner end of the outer curved rod 51' can touch the short edge 521 'of the inner curved rod 52', so that the inner curved rod 52 'is pushed to move inwards, the outer curved rod 51' can enable the touching section 5221 'to be in contact with the touching plate 47114' on the shifting sheet 4711 'in the moving process, the shifting sheet 4711' is pressed towards one side of the safety switch element 472', the safety switch element 472' is started to generate an electric signal, then a user presses the pressing part 461', the main switch element 462' is started to generate the electric signal, when the two switch elements are both in the opening state, the motor is started, the force supply spring starts to store energy, and then the nails are shot out, and the nails are shot. After the nail is fired, when the outer end of the outer curved bar 51 'is separated from the target portion, the curved bar return spring 55' drives the inner curved bar 52 'and the outer curved bar 51' to return. As in embodiment 1, the outer end of the outer curved bar 51 'is further provided with a protective cover 54', and the protective cover 54 'contacts the target site, so that the abrasion of the outer end of the outer curved bar 51' can be reduced, and the service life of the outer curved bar can be prolonged.

< example 3>

This embodiment is substantially the same as embodiments 1 and 2, except for the implementation of the elastic member of the unidirectional rotating member 45, and in this embodiment, the elastic member has a structure as shown in fig. 23: the elastic member has a detent spring 454 and a detent spring seat 455, the detent spring seat 455 is fixed to an end surface of the speed reducer 442 of the drive motor by a screw, and one end of the detent spring 454 abuts against the detent spring seat 455 and the other end abuts against the detent 452. In fig. 23, two pawls 452, two pawl springs 454 and two pawl spring seats 455 are arranged and symmetrically distributed on two sides of ratchet 451, and in actual use, one or two of the pawls are arranged, so that the anti-reverse effect is better when two pawls are used. Similarly, in embodiment 1, two pawls 452 and two pawl springs 453 may be provided symmetrically.

Examples effects and effects

According to the piston driving assembly in the above embodiment, since the unidirectional rotating member 45 is disposed between the driving motor 44 and the pushing member 43, so that the pushing member 43 can push the piston 41 only in one direction, the piston 41 can be prevented from being pushed out by the force supply spring 42 in the middle of the movement, so as to ensure the driving force of the nail shooting; meanwhile, the unidirectional rotating component 45 adopts a mode that the ratchet wheel 451 is matched with the pawl 452, so that the cost is low, the effect of preventing the motor from reversing is good, and the installation and the replacement are very convenient.

According to the striker assembly in the above embodiment, the striker 49 is mounted between the striker 49 and the piston 41 by means of threaded connection, and the mounting is a detachable mounting manner, so that when the striker 49 is worn and needs to be replaced, the striker 49 can be taken out and replaced by only detaching the bolt, which is very convenient, and the piston is not damaged, and the cost is saved without replacing the piston.

According to the energy storage assembly in the above embodiment, since the guide sleeve 481 is disposed 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, prevent the force supply spring 42 from bending and deforming in other directions when contracting, but also reduce the abrasion and friction force of the force supply spring 42 during movement, so that the force supply spring 42 has a longer service life, contracts more smoothly, and stores energy more rapidly.

According to the driving control mechanism and the nail gun of the above embodiment, since the toggle part 471 of the safety switch 47 has the toggle piece 4711, the toggle piece 4712 and the toggle piece seat 4713, the mutual linkage between the toggle piece 4711, the toggle piece 4712, the toggle piece seat 4713 and the pushing member 43 is adopted to play a role in turning on and off the safety switch 47 to generate an electric signal, and the driving control mechanism belongs to a mechanical structure control mode, and no additional controller is needed, so that the cost is saved, and the operation and the control can be more stable.

According to the driving control mechanism and the nail gun of the above embodiment, since the pushing member 43 is provided, and the pushing member 43 is directly matched with the piston 41 and used for pushing the piston 41 to move towards the force supply spring 42, so that the force supply spring 42 is compressed and stored energy, and the pushing member 43 is not in direct contact with the striker 49, the influence on the movement of the piston 41 caused by the contact between the pushing member 43 and the striker 49 is avoided, and the whole energy storage process is smoother and more stable.

In addition, the pushing member 43 has a pushing end facing the piston 41, the piston is urged to move by contacting with the pushing end of the piston 41 in the process of rotating the pushing end again, and the pushing end has a first pushing end 431 and a second pushing end 432, which can respectively perform a first section of energy storage and a second section of energy storage, so as to maximize the energy storage capacity of the power supply spring 42; meanwhile, the outer diameters of the first pushing end 431 and the second pushing end 432 are different, so that the maximum working stroke of the movement of the piston 41 can be obtained as much as possible by adjusting the outer diameter of the pushing end without changing the length of the abutting end of the piston 41, and the larger the working stroke is, the larger the compressed amount of the force supply spring 42 is, so that the larger energy can be obtained, and the gun nail can be ejected more powerfully and rapidly.

The above-mentioned embodiment designs the pushing member 43 into the shape of the crank 430, and is lighter than the structure such as a disk in the prior art, which not only can save materials, but also can reduce energy consumption, and make the transmission effect better.

According to the driving control mechanism provided by the above embodiment, the driving control mechanism further comprises a control component, the control component comprises a main switch 46 and a safety switch 47, the two switches are connected in series and connected to the driving motor, so that the motor body 441 of the nail gun 10 can be directly controlled according to the nail shooting electric signal and the safety electric signal generated by the main switch 46 and the safety switch 47, and the main switch 46 and the safety switch 47 are arranged in series, so that the motor body 441 can be controlled to be started only when the nail shooting electric signal and the safety electric signal are received simultaneously and both the two signals are effective, thereby performing nail shooting. Because the drive control mechanism adopts a double-switch and double-safety design, the safety in the nail shooting process is also ensured. Further, with the drive control mechanism of the above embodiment, the nail gun 10 can start the safety switch through the toggle assembly when it touches the target position, and automatically start to store energy when the main switch 46 is pressed, i.e., started, and is kept in the energy storage completed state, so that the user can directly discharge the nail by pressing only one switch, and the operation is very convenient.

The above embodiments are merely illustrative of specific embodiments of the present invention, and the present invention is not limited to the description of the above embodiments.

Claims

1. The utility model provides a piston drive assembly, sets up in nail gun for the piston that drives nail gun moves towards the confession power spring, its characterized in that includes:

the pushing component is used for pushing the piston to move;

the driving motor is used for driving the pushing component to rotate; and

a one-way rotation member installed at an output end of the driving motor;

wherein the one-way rotation member has:

the ratchet wheel is sleeved on the output end and is provided with a plurality of ratchets;

the pawl is arranged on the side edge of the ratchet wheel and is used for being inserted into the ratchet wheel to be matched with the ratchet wheel; and

and one end of the elastic piece is arranged on the driving motor, and the other end of the elastic piece is abutted to the pawl.

2. The piston drive assembly of claim 1,

wherein the driving motor includes:

a motor body having an output shaft,

a speed reducer mounted on the output shaft and having the output end,

the elastic piece reaches the pawl all is provided with two, all symmetrical arrangement in the both sides of ratchet.

3. Piston drive assembly according to claim 1 or 2,

the elastic piece is a pawl elastic piece, one end of the elastic piece is fixed on the driving motor through a fixing pin, and the other end of the elastic piece is bent upwards to form a leaning piece which can be pasted on the pawl.

4. Piston drive assembly according to claim 1 or 2,

wherein the elastic member has

A spring of the pawl is arranged on the base,

a pawl spring seat fixed to the driving motor by a screw,

one end of the pawl spring is abutted to the pawl spring seat, and the other end of the pawl spring is abutted to the pawl.

5. Piston drive assembly according to claim 1 or 2,

wherein the urging member has:

a crank mounted at its mid-portion on the output end and having a first crank arm and a second crank arm;

the first pushing end is arranged on the first crank arm and is used for being linked with the first abutting end of the piston; and

the second pushing end is arranged on the second crank arm and is used for being linked with the second pushing end of the piston;

the outer diameter of the second pushing end is smaller than that of the first pushing end.

6. A drive control mechanism provided in a nail gun having a housing for controlling and driving a striking of a nail of the nail gun, comprising:

the firing pin assembly is configured to be moved between,

the piston driving assembly is used for pushing the firing pin assembly to move;

an energy storage assembly for storing energy for and urging movement of the piston drive assembly, an

The control component is used for controlling the energy storage component to operate,

wherein the piston drive assembly is according to any one of claims 1 to 5.

7. The drive control mechanism according to claim 6,

wherein the striker assembly has:

a piston movably disposed within the housing,

a striker detachably mounted to the piston for impacting the gun nail,

a fixing part is arranged on one side of the piston facing the gun nail, and the end part of the firing pin is connected to the fixing part through threads;

the energy storage assembly has:

the guide rod is arranged in the shell through a fixed seat, and the piston is movably arranged on the guide rod;

the force supply spring is sleeved on the periphery of the guide rod, one end of the force supply spring is abutted against the piston and is pushed by the piston to carry out compression energy storage; and

the guide sleeve is sleeved on the periphery of the guide rod and is positioned between the force supply spring and the guide rod;

the control assembly has:

a main switch having a pressing portion and a main switch element,

a safety switch having a toggle portion and a safety switch element,

the main switch, the safety switch and the driving motor are connected, and when the main switch element and the safety switch element generate electric signals, the driving motor operates.

8. The drive control mechanism according to claim 7,

wherein, the toggle part has:

a poke sheet which is used for contacting with the contact point of the safety switch element to generate an electric signal,

a deflector rod, one end of which is linked with the pushing component, the other end of which is linked with the plectrum and is used for pushing the plectrum to disconnect the contact of the plectrum and the safety switch element,

the plectrum contains:

a contact plate for contacting a contact point of the safety switching element,

a poking plate which is used for contacting with the poking rod,

when the touch point of the safety switch element is contacted with the contact plate, the safety switch element generates an electric signal; when the contact point of the safety switching element is separated from the contact plate, the safety switching element disconnects an electrical signal.

9. The drive control mechanism according to claim 8, characterized by further comprising:

a crank assembly for urging the paddle in linkage with the safety switch element and having:

an outer curved rod, the outer end of which extends out of the gun nozzle mechanism of the nail gun, the inner end of which is linked with the shifting sheet and is used for enabling the contact plate to be in contact with the contact point of the safety switch element,

an inner curved bar, the outer end of which is linked with the outer curved bar, the inner end of which is used for driving the contact plate to contact or separate from the contact point,

and a curved bar return spring is arranged at one end of the inner curved bar, which is close to the outer curved bar.

10. A nail gun, comprising at least:

a shell, the interior of which is provided with a mounting cavity,

a muzzle mechanism mounted at the front end of the housing, an

A drive control mechanism installed in the installation cavity,

wherein the drive control mechanism is the drive control mechanism according to any one of claims 6 to 9.