CN218313325U

CN218313325U - Nail-shooting driving mechanism and nail-shooting gun

Info

Publication number: CN218313325U
Application number: CN202222460952.4U
Authority: CN
Inventors: 黄锦全; 杨涛; 李海军; 厉敏
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: 2023-01-17
Anticipated expiration: 2032-09-15

Abstract

The utility model belongs to the technical field of fastening tool, concretely relates to drive mechanism and power actuated setting device penetrate nail. Including piston, at least one confession power spring and promotion component, wherein, be provided with on the piston with the promotion end mutually support the promotion end to have: the first end that pushes against extends along the nail-shooting direction of power actuated setting device from the piston, and the second end that pushes against extends towards the pushing component from the piston, and the pushing end has: the first pushing end is matched with the first abutting end, the second pushing end is matched with the second abutting end, and the outer diameter of the second pushing end is smaller than that of the first pushing end. Because be provided with the pushing component, and this pushing component is direct to cooperate with the piston for promote the piston towards supplying power spring motion, thereby let supply power spring compress the energy storage, and do not have direct contact between pushing component and the firing pin, avoided influencing the removal of piston because of with the contact between the firing pin, make whole energy storage process more smooth and easy and stable.

Description

Nail-shooting driving mechanism and nail-shooting gun

Technical Field

The utility model belongs to the technical field of fastening tool, concretely relates to nail driving mechanism and nail gun penetrate.

Background

The nail gun is a fastening tool, is used for building construction mostly, at present, a widely used nail gun is an electric nail gun adopting lithium batteries, the nail gun is powered by the lithium batteries, then the piston is pushed by a corresponding driving structure, and then the piston compresses the force supply spring to store energy, when the nail is shot, the piston is driven to move by the elasticity of the force supply spring, and then the firing pin arranged on the piston is driven to shoot the striking nail. Reference may be made in particular to the applicant's prior patent CN215395034U.

However, in the above patent technologies, there still exist some disadvantages such as: the driving structure adopts a mode that a gear is matched with a firing pin with a tooth groove to promote a force supply spring to store energy, and the matching mode of a rack and the tooth groove is easy to generate phenomena of abrasion, tooth clamping and the like in the long-time use process, so that the transmission is not smooth, even the nail gun is directly clamped, and the nail shooting condition cannot be realized.

Disclosure of Invention

For solving the above-mentioned problem, provide a compact structure, spring energy storage directly relies on the drive piston to remove, and the energy storage process is more smooth and easy, the nail actuating mechanism and the nail gun that uses this kind of actuating mechanism of penetrating of being more convenient for operate, the utility model discloses a following technical scheme:

a nail driving mechanism provided in a nail gun having a housing for driving a nail of the nail gun to be struck and discharged, characterized by comprising: the piston is movably arranged in the shell and is provided with a firing pin; one end of the at least one force supply spring is abutted with the piston and used for providing power for the movement of the piston; the pushing component is rotatably arranged in the shell and is provided with a pushing end facing the piston, and the pushing end is used for pushing the piston to move towards the force supply spring and compress the force supply spring; wherein, be provided with on the piston with the end of pushing mutually supporting push end, should push end and have: the first end that pushes against extends along the nail-shooting direction of power actuated setting device from the piston, and the second end that pushes against extends towards the pushing component from the piston, and the pushing end has: the first pushing end is used for being matched with the first abutting end, the second pushing end is used for being matched with the second abutting end, and the outer diameter of the second pushing end is smaller than that of the first pushing end.

In the utility model provides a penetrate nail actuating mechanism, still have such characteristic, wherein, the pushing member still has the crank, and this crank contains: the first crank arm is used for installing the first pushing end, the second crank arm is used for installing the second pushing end and is equal in length to the first crank arm, and an included angle is formed between the first crank arm and the second crank arm.

The utility model provides an among the drive mechanism that penetrates nail, still have such characteristic, wherein, first catch and second catch all are cylindrically, set up the outer tip at first crank arm and second crank arm respectively, and the outer tip of first crank arm and second crank arm is convex, the outer tip of the first crank arm of protrusion of edge of first catch.

The utility model provides an among the drive mechanism of penetrating the nail, still have such characteristic, still include the control assembly, this control assembly has: a main switch having a pressing portion and a main switching element that generates an electric signal when the pressing portion is pressed; a safety switch having a toggle part and a safety switch element which generates an electrical signal when in contact with the toggle part; the driving motor is used for driving the pushing component to rotate; the main switch element, the safety switch element and the driving motor are electrically connected, and when the main switch element and the safety switch element generate electric signals, the driving motor operates.

The utility model provides an among the drive mechanism of penetrating the nail, still have such characteristic, wherein, the portion of stirring has: the safety switch comprises a poking piece and a poking rod, wherein the poking piece is used for being linked with a safety switch element, one end of the poking rod is used for being linked with the poking piece, the other end of the poking rod is used for being linked with a pushing end, the poking piece comprises a triggering end used for being in contact with the safety switch element and an open slot used for being disconnected with the safety switch element, the poking rod is arranged on one side of the poking piece, and a poking reset spring used for enabling the poking piece to reset is arranged on the other side of the poking piece.

The utility model provides an among the drive mechanism of penetrating nail, still have such characteristic, wherein, the poker rod contains: the first poking end is arranged close to the pushing end and is provided with a guide inclined plane used for being in contact with the pushing end; the second stirring end is arranged close to the stirring sheet; the connecting section is used for connecting the first stirring end and the second stirring end and is rotationally arranged in the shell through a pin shaft; when the pushing end is scraped to the first poking end in the rotating process, the second poking end touches the poking sheet and pushes the poking sheet to move.

The utility model provides an among the drive mechanism of penetrating nail, still have such characteristic, still include the bent lever subassembly for promote the plectrum and move with the safety switch component linkage, and have: 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 inserted into a shell of the nail gun, the outer end of the inner curved rod is linked with the outer curved rod, the inner end of the inner curved rod is linked with the shifting piece, and a curved rod reset spring is arranged at one end, close to the shifting piece, of the inner curved rod.

The utility model provides an among the drive mechanism of penetrating nail, still have such characteristic, wherein, the inner of interior curved bar is provided with and bumps the section, and the plectrum still contains and is used for bumping the touch panel with touching section matched with, and the open slot is located and bumps touch panel and trigger between the end.

The utility model also provides an electronic power actuated setting device, have such characteristic, include at least: the nail shooting device comprises a shell, a gun nozzle mechanism and a shooting nail driving mechanism, wherein the shell is internally provided with an installation cavity, the gun nozzle mechanism is installed at the front end of the shell, the shooting nail driving mechanism is installed in the installation cavity, and the shooting nail driving mechanism is the shooting nail driving mechanism.

Utility model with the functions and effects

According to the utility model discloses a nail driving mechanism and nail shooting gun, owing to be provided with the promotion component, and this promotion component is direct to cooperate with the piston for promote the piston towards supplying power spring motion, thereby let supply power spring to compress the energy storage, and promote no direct contact between component and the firing pin, avoided influencing the removal of piston because of the contact between with the firing pin, make whole energy storage process more smooth and easy and stable. In addition, the pushing component is provided with a pushing end facing the piston, the piston is driven to move by adopting a mode that the pushing end is contacted with a pushing end on the piston in the process of rotating, and the pushing end is provided with a first pushing end and a second pushing end which can respectively carry out first section energy storage and second section energy storage so as to drive the energy storage capacity of the force supply spring to be maximized; meanwhile, the outer diameters of the first pushing end and the second pushing end are different, so that the maximum working stroke of piston movement can be obtained as far as possible by adjusting the outer diameter of the pushing end under the condition of not changing the length of the piston abutting against the pushing end, the larger the working stroke is, the larger the compressed amount of the force supply spring is, the higher the energy can be obtained, and the gun nail can be ejected more powerfully and rapidly.

Drawings

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

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

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

Fig. 4 is a structural diagram of the nail driving mechanism according to the embodiment of the present invention.

Fig. 5 is a view showing a structure for mounting the muzzle mechanism according to the embodiment of the present invention.

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

Fig. 7 is one of the process diagrams of the pushing member of the embodiment of the present invention engaging with the piston and pushing the piston to move.

Fig. 8 is a second process diagram of the pushing member of the embodiment of the present invention engaging with the piston and pushing the piston to move.

Fig. 9 is a schematic view illustrating a stroke analysis formed by the mutual cooperation of the pushing member and the piston abutting end according to the embodiment of the present invention.

Fig. 10 is a schematic view of the stroke analysis formed by the mutual cooperation of the control group pushing member and the piston pushing end.

Fig. 11 is a schematic structural diagram of the safety switch according to the embodiment of the present invention installed in the housing.

Fig. 12 is a partially enlarged view of fig. 11 at a.

Fig. 13 is a partial enlarged view of fig. 11 at B.

Fig. 14 is a schematic view of the installation positions of the safety switch, the pushing member and the crank assembly according to the embodiment of the present invention.

Reference numerals are as follows: the nail gun comprises a nail gun 10, a housing 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 driving mechanism 40, a piston 41, a first pushing end 411, a second pushing end 412, a fixing part 413, a socket 4131, a fixing hole 4132, a mounting part 414, a mounting seat 4141, a connecting part 415, a force supply spring 42, a fixing plate 421, a guide rod 422, 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 motor 44, a piston 41, a first pushing end 4302, a second pushing end 432, a second pushing end the safety switch comprises a speed reducer 45, a main switch 46, a pressing part 461, a main switch element 462, a safety switch 47, a toggle part 471, a toggle piece 4711, a trigger end 47111, an open slot 47112, a toggle return spring 47113, a toggle rod 4712, a first toggle end 47121, a guide surface 471211, a second toggle end 47122, a pin 47123, a safety switch element 472, a switch bulge 4721, a cylinder head seat 48, a mounting plate 481, a screw 482, a striker 49, a crank rod assembly 50, an outer crank rod 51, an inner crank rod 52, a short edge 521, a long edge 522, a touch section 5221, a return spring 5222, a pressing plate 53, a 54 and a 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 following embodiments and drawings are combined to specifically describe the nail driving mechanism and the nail gun of the present invention.

< example >

The present embodiment provides a nail driving mechanism and a nail gun, which are more convenient to operate and do not affect the safety and the nail shooting effect.

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 nail driving mechanism 40, and a power supply unit (lithium battery 60). The casing 20 is a casing 21 disposed on the outside, the casing 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 nail driving mechanism 40 is formed inside the casing 21, and the casing 21 can not only accommodate the internal components such as the nail driving 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 staple firing drive mechanism 40 is adapted to drive the firing pin in a predetermined reciprocating direction to fire the staples out of the muzzle mechanism 30 for firing the staples.

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

Fig. 4 is a structural view of the nail driving mechanism according to the embodiment of the present invention.

As shown in fig. 4, the nail driving mechanism 40 includes a piston 41 movably disposed in the housing 20, at least one force supplying spring 42, and a pushing member 43 rotatably disposed in the housing 20, wherein the pushing member 43 is driven to rotate by a driving motor, or by a rotating cylinder, a connecting rod cam structure, or other components or combinations of components capable of driving an object to rotate. In the present embodiment, a drive motor is preferable.

As shown in fig. 2, a slot structure is disposed in the mounting cavity inside the housing 21, the slot structure has a cylinder head 48 fixed to a front end thereof and a fixing plate 421 fixed to a rear end thereof, and a pair of parallel guide rods 422 is disposed between the cylinder head 48 and the fixing plate 421. As shown in fig. 4, in the present embodiment, two parallel force-supplying springs 42 are provided, a front end of each force-supplying spring 42 abuts against the piston 41, a rear end of each force-supplying spring 42 abuts against the fixing plate 421, the two force-supplying springs 42 are respectively sleeved on peripheries of the two guide rods 422, one end of each guide rod 422 is fixed to the fixing plate 421 through a screw, and the other end of each guide rod 422 passes through the piston 41 and is fixed to the cylinder head seat 48. The guide rod 422 serves to guide the piston 41 to reciprocate in a predetermined direction.

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 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-shooting direction of the nail gun, and the second pushing end 412 extends from the piston 41 toward 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 view showing a gun nozzle mechanism mounting structure according to an embodiment of the present invention.

As shown in fig. 5, the cylinder head seat 48 is located in front of the piston 41 along the striking direction, and a mounting plate 481 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 481 by bolts, the front end of the striker 49 in the middle of the piston 41 penetrates through the middle of the cylinder head seat 48 and is inserted into the nail passing channel 34 between the gun nozzle bottom plate 32 and the gun nozzle cover plate 33, and the left and right sides of the cylinder head seat 48 are fixed to the housing by screws 482.

As shown in fig. 6, the piston 41 has a fixing portion 413 for fixing the striker 49 (the fixing portion 413 is similar to a cylinder in shape, the middle portion is provided with a linear socket 4131 along the axial direction thereof, and is provided with a fixing hole 4132 penetrating through the entire cylinder in the radial direction, one end of the striker 49 is inserted into the socket 4131 and is inserted into the fixing hole 4132 by a bolt, so as to fix the striker 49 on the fixing portion 413), the rear side of the fixing portion 413 is provided with a mounting portion 414 for mounting the power spring 42, the mounting portion 414 is two conical mounting seats 4141 arranged corresponding to the power spring, the middle portion of the mounting seat 4141 is provided with a through hole, and the front ends of the two guide rods 422 pass through the corresponding through holes and are fixed on the cylinder head seat 48; 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.

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 includes a motor 44 and a reducer 45, the reducer 45 is installed at an output end of the motor 44, the pushing member 43 is installed at an output end of the reducer 45, and a one-way bearing is disposed between the two, and the pushing member 43 is driven by the motor 44 and the reducer 45 to rotate in a one-way direction. The motor 44 of the present embodiment is a brushless motor. The speed reducer 45 is installed at the output end of the motor 44, and is used for reducing the rotation speed of the output end of the motor 44, so that higher output torque is obtained, namely, higher driving force is obtained. The one-way bearing is used to limit the rotational direction of the output end of the drive motor 44 so that it can only rotate in one direction. The one-way bearing is mounted on the output shaft of the speed reducer 45 and forms a hole-shaft fit with the output shaft, so that the output shaft can only rotate in one direction. Meanwhile, when the pushing member 43 receives a pushing force for rotating it in the reverse direction, the one-way bearing receives the pushing force so that the pushing force is not transmitted to the output shaft, thereby protecting the motor 44. The specific structure of the motor 44, the reducer 45 and the one-way bearing 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 speed reducer 45 through the through hole, and the crank 430 can rotate along with the motor 44 and the speed reducer 45. 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 respectively cooperate with the first abutting end 411 and the second abutting end 412 on the piston 41 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.

As shown in fig. 7, the pushing member 43 is driven by the motor 44 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, and the piston 41 can move along the guide rod 422 towards the energy storage direction under the action of the pushing force, and compresses the force supplying spring 42 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 along with the second pushing end 432 and is separated 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. During nail shooting, the motor 44 drives the pushing member 43 to rotate continuously, the first pushing end 431 rotates and disengages 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 shooting direction under the action of the elastic force of the force supply spring 42 until the striker 49 impacts the nail to cause the nail to be shot, thereby completing the nail shooting 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 44 is used for driving the pushing member 43 to rotate, and further, the pushing member 43 pushes the piston 41 to move, so that the force supply spring 42 is compressed to store energy, and finally, the piston 41 is pushed out by 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 carried out the reference experiment to this as follows:

as shown in fig. 9, 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. 10, 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 diameters of the first pushing end 431 and the second pushing end 432 are equal (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 nail driving 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 44, and when the main switch 46 and the safety switch 47 have electric signals at the same time, the motor 44 can be controlled to start operation.

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 electric signal when the pressing portion 461 is pressed; 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 44 operates to drive the pushing member 43 to rotate to complete the spring energy storage process.

Fig. 11 is a schematic structural view of the safety switch according to the embodiment of the present invention installed in the housing.

Fig. 12 is a partially enlarged view of fig. 11 at a.

Fig. 13 is a partial enlarged view of fig. 11 at B.

As shown in fig. 11, 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 protrusion 4721, the toggle piece 4711 is provided with a trigger end 47111, and when the trigger end 47111 touches the switch protrusion 4721, the safety switch element 472 can be triggered to be started to generate an electric signal. An open groove 47112 is provided beside the triggering end 47111, and when the toggle piece 4711 is moved, the triggering end 47111 is separated from the switch protrusion 4721, and the switch protrusion 4721 is aligned with the open groove 47112, the safety switch element 472 is turned off.

The tap lever 4712 is in the shape of a long rod 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 inside the dial plate 4711, a pin 47123 is provided at the connecting section where the first dial end 47121 and the second dial end 47122 are connected, a mounting portion 2121 for mounting the pin 47123 is provided in the rear cover plate 212 of the housing 20 in a protruding manner, and the dial lever 4712 is rotatably mounted on the mounting portion 2121 through the pin 47123.

As shown in fig. 14, 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 forced to rotate inward, so that the second poking end 47122 pokes outward and hits the poking piece 4711, the poking piece 4711 moves outward, and the triggering end 47111 leaves the switch protrusion 4721, so that the safety switch element 472 is switched 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, which facilitates the collision of the pushing end with the first toggle end 47121 during rotation.

The drive mechanism 40 also includes a crank assembly 50, the crank 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. 14, 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 driver piece 4711 and is bent at the end toward the driver piece 4711 to form a contact section 5221. A touch plate 47114 is arranged on the toggle piece 4711 and close to the touch section 5221, an open groove 47112 is arranged between the touch plate 47114 and the trigger end 47111, and a curved rod return spring 5222 is arranged on one side of the touch section 5221.

The linkage of the crank assembly to 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 position needing to be nailed, 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 position, 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, so that the safety switch element 472 is started to generate an electric signal, then a user presses the pressing part 461 to trigger the main switch element 462 to generate the electric signal, when the two switch elements are both in the opening state, the motor 44 is started to supply energy to the power spring to start to store, and then the nail is struck out to realize the nail shooting. When the outer end of the outer curved rod 51 is separated from the target portion after the nail is driven, the curved rod return spring 5222 drives the inner curved rod 52 and the outer curved rod 51 to return.

As shown in fig. 14, a protective cover 54 is further provided at the outer end of the outer curved bar 51, and the protective cover 54 is in contact with the target site, so that the wear 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.

The working principle of the embodiment is as follows:

when the nail gun is used, the gun nozzle mechanism at the front side is aligned to a target position to be nailed, the outer curved rod 51 is pushed to cause the inner curved rod to move inwards, the safety switch element 472 is enabled to be started to generate an electric signal, then the user starts the main switch element 462 to generate the electric signal, and at the moment, the main switch and the safety switch generate the electric signal, so that the control motor 44 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 finished, the nail can be shot. During nail shooting, the motor 44 drives the pushing member 43 to rotate continuously, the first pushing end 431 rotates and disengages 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 shooting direction under the action of the elastic force of the force supply spring 42 until the striker 49 impacts the nail to cause the nail to be shot, thereby completing the nail shooting 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 poking end 47121 in the rotating process, the first poking end 47121 is driven to rotate inwards, the second poking end 47122 is poked outwards and touches the poking piece 4711, the poking piece 4711 moves outwards, the triggering end 47111 is separated from the switch protrusion 4721, the switch protrusion 4721 is just aligned with the open groove 47112 at the moment, the safety switch element 472 is disconnected, and the motor stops rotating.

Examples effects and effects

According to the nail driving mechanism and the nail gun of the embodiment, the pushing member 43 is arranged, 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 to store energy, the pushing member 43 is not in direct contact with the firing pin 49, the influence on the movement of the piston 41 caused by the contact between the pushing member 43 and the firing pin 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 pushing member 43 is designed to be in the shape of the crank 430 in the embodiment, and the structure is lighter compared with the structure such as a disc in the prior art, so that not only can materials be saved, but also energy consumption can be reduced, and the transmission effect is better.

According to the nail driving mechanism provided by the embodiment, the nail driving mechanism further comprises a control component, the control component comprises a main switch 46 and a safety switch 47, the driving motor, the main switch 46, the safety switch 47 and a power supply are electrically connected, so that the motor 44 of the nail gun 10 is controlled according to nail shooting electric signals and safety electric signals 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 44 can be controlled to be started only when the nail shooting electric signals and the safety electric signals are simultaneously received and are both effective, and the nail is shot. Because the nail shooting driving mechanism adopts the design of double switches and double insurance, the safety in the nail shooting process is also ensured.

Furthermore, because the toggle part of the safety switch is provided with the toggle piece and the toggle rod, the mode of mutual linkage among the toggle piece, the toggle rod and the pushing component is adopted to play a role in opening and breaking off the electric signal of the safety switch, and the safety switch belongs to a mechanical structure control mode without additionally arranging a controller, thereby saving the cost and controlling the stability.

Further, with the nail driving mechanism of the present embodiment, the nail gun 10 can start the safety switch through the curved lever assembly when it touches the target position, and automatically start to store energy when the main switch 46 is pressed, i.e. started, and keep in the energy storage completed state, so that the user can directly discharge the nail by pressing only one switch, which is very convenient to operate.

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

Claims

1. A nail driving mechanism provided in a nail gun having a housing, for driving a nail of the nail gun to be struck and discharged, comprising:

the piston is movably arranged in the shell and is provided with a firing pin;

at least one force supply spring, one end of which is abutted with the piston; and

the pushing component is rotationally arranged in the shell and is provided with a pushing end facing the piston, and the pushing end is used for pushing the piston to move towards the force supply spring and compress the force supply spring;

wherein, be provided with on the piston with the end of pushing mutually supporting pushes away the end, should push away the end and have:

a first push-against end extending from the piston along the nail-shooting direction of the nail-shooting gun,

a second urging end extending from the piston toward the urging member,

the pushing end has:

a first pushing end used for being matched with the first pushing end,

and the second pushing end is used for being matched with the second abutting end, and the outer diameter of the second pushing end is smaller than that of the first pushing end.

2. The nail drive mechanism of claim 1,

wherein the pushing member further has a crank comprising:

a first crank arm for mounting the first pusher end,

a second crank arm for mounting the second pushing end and having a length equal to that of the first crank arm,

an included angle is formed between the first crank arm and the second crank arm.

3. The nail drive mechanism of claim 2,

wherein the first pushing end and the second pushing end are both cylindrical and are respectively arranged at the outer ends of the first crank arm and the second crank arm,

the outer ends of the first crank arm and the second crank arm are arc-shaped, and the outer edge of the first pushing end protrudes out of the outer end of the first crank arm.

4. The nail drive mechanism of any one of claims 1-3, further comprising a control assembly having:

a main switch having a pressing portion and a main switching element that generates an electric signal when the pressing portion is pressed;

a safety switch having a toggle part and a safety switch element which generates an electrical signal when in contact with the toggle part; and

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

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

5. The nail drive mechanism of claim 4,

wherein, the toggle part has:

a toggle piece for linkage with the safety switch element,

one end of the poke rod is used for being linked with the poke sheet, the other end of the poke rod is used for being linked with the pushing end,

the toggle piece comprises a trigger end used for contacting with the safety switch element and an open slot used for disconnecting with the safety switch element,

one side of the poking piece is provided with the poking rod, and the other side of the poking piece is provided with a poking reset spring for promoting the poking piece to reset.

6. The nail drive mechanism of claim 5,

wherein, the poker rod contains:

the first stirring end is arranged close to the pushing end and is provided with a guide inclined plane used for being contacted with the pushing end;

the second stirring end is arranged close to the stirring sheet; and

the connecting section is used for connecting the first stirring end and the second stirring end and is rotationally arranged in the shell through a pin shaft;

when the pushing end scrapes the first poking end in the rotating process in a scraping mode, the second poking end touches the poking piece and pushes the poking piece to move.

7. The nail drive mechanism of claim 5, further comprising

A crank assembly for pushing a 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 component of the nail gun, and the inner end of which is inserted into the shell of the nail gun,

an inner curved bar, the outer end of which is linked with the outer curved bar, and the inner end of which is linked with the poking sheet,

and a curved bar reset spring is arranged at one end of the inner curved bar, which is close to the poking piece.

8. The nail drive mechanism of claim 7,

the inner end of the inner curved rod is provided with a touch section, the toggle piece further comprises a touch plate which is used for being matched with the touch section, and the open slot is located between the touch plate and the trigger end.

9. 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 nail-shooting driving mechanism arranged in the mounting cavity,

wherein the nail driving mechanism is the nail driving mechanism according to any one of claims 1 to 8.