WO2024055539A1 - Ensemble percuteur, mécanisme de commande de stockage d'énergie et pistolet à clous - Google Patents

Ensemble percuteur, mécanisme de commande de stockage d'énergie et pistolet à clous Download PDF

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Publication number
WO2024055539A1
WO2024055539A1 PCT/CN2023/080038 CN2023080038W WO2024055539A1 WO 2024055539 A1 WO2024055539 A1 WO 2024055539A1 CN 2023080038 W CN2023080038 W CN 2023080038W WO 2024055539 A1 WO2024055539 A1 WO 2024055539A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
pushing
energy storage
safety switch
switch element
Prior art date
Application number
PCT/CN2023/080038
Other languages
English (en)
Chinese (zh)
Inventor
杨涛
李海军
黄锦全
周卫荣
Original Assignee
台州市大江实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 台州市大江实业有限公司 filed Critical 台州市大江实业有限公司
Publication of WO2024055539A1 publication Critical patent/WO2024055539A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention belongs to the technical field of fastening tools, and specifically relates to a striker assembly, an energy storage control mechanism and a nail gun.
  • a nail gun is a fastening tool that is mostly used in construction.
  • a widely used nail gun is an electric nail gun that uses lithium batteries. This nail gun is powered by a lithium battery and drives a motor and the corresponding The driving structure drives the piston, and then the piston compresses the power supply spring to store energy.
  • the elastic force of the power supply spring is used to drive the piston movement, which in turn drives the firing pin installed on the piston to impact and eject the nails.
  • the striker is usually directly fixed on the piston by welding or other methods. If the striker is worn and damaged after being used for a long time, the entire striker and piston need to be replaced. ,higher cost.
  • a detachable and installable striker is provided.
  • An energy storage control mechanism and a nail gun containing such a striker assembly are provided.
  • the present invention adopts the following technology. plan:
  • the present invention proposes a firing pin assembly, which is arranged in a nail gun with a casing and is used to knock out the nails in the nozzle mechanism of the nail gun. It has the following characteristics, including: a piston, a mobile setting In the housing, the firing pin is detachably mounted on the piston for impact with the gun nail.
  • the piston is provided with a fixed part on one side facing the gun mouth mechanism, and the end of the firing pin is connected to the fixed part through threads; the piston is away from the
  • a mounting seat is provided on one side of the gun nozzle mechanism for installing the power supply spring of the nail gun.
  • the firing pin assembly proposed by the present invention may also have such a feature, in which the fixing part is provided with a straight-shaped socket along the horizontal direction, and is provided with a fixing hole penetrating the straight-shaped socket along the vertical direction, and the end of the firing pin is inserted into There is a mounting hole corresponding to the fixing hole in the straight socket, and the end of the striker is provided with a mounting hole, and the striker is fixed on the fixing part by passing bolts or screws through the fixing hole and the mounting hole.
  • the invention also proposes an energy storage control mechanism, which is arranged in a nail gun with a casing and is used to control and drive the nails of the nail gun to strike out. It has the following characteristics, including: a striker assembly, a storage energy components, It is used to accumulate energy for the striker assembly and promote its movement, and the control assembly is used to control the operation of the energy storage assembly, wherein the striker assembly is the striker assembly as described above.
  • the energy storage control mechanism proposed by the present invention can also have the following features, wherein the energy storage component has: a guide rod, which is installed in the housing through a fixed seat, with a piston movably arranged on it, and a power supply spring, which is sleeved on One end of the outer periphery of the guide rod is in contact with the piston and is compressed and stored under the push of the piston.
  • the pushing member has a pushing end toward the piston and is used to push the piston toward the power supply spring, thereby allowing the power supply spring to compress and accumulate energy.
  • the control component includes: a main switch, which has a pressing part and a main switching element, a safety switch, which has a toggle part and a safety switching element, and the main switch, the safety switch and the driving motor are connected , when both the main switch element and the safety switch element generate electrical signals, the motor is driven to run.
  • the energy storage control mechanism proposed by the present invention may also have such a feature, in which a guide sleeve is set around the outer circumference of the guide rod.
  • the guide sleeve is located between the power supply spring and the guide rod, and the length of the guide sleeve is shorter than the supply spring. The length of the force spring after it is compressed.
  • the energy storage control mechanism proposed by the present invention may also have such a feature, wherein the piston is provided with a push end that cooperates with the push end, and has: a first push end, from the piston along the nail gun Extending in the nail shooting direction, the second pushing end extends from the piston toward the pushing member.
  • the pushing end has: a first pushing end that cooperates with the first pushing end, and a second pushing end that cooperates with the second pushing end. Fitting, its outer diameter is smaller than the outer diameter of the first pushing end.
  • the energy storage control mechanism proposed by the present invention may also have the feature that the pushing member further has a crank, which includes: a first crank arm for installing the first pushing end, and a second crank arm for Install the second push end and have the same length as the first crank arm. An included angle is formed between the first crank arm and the second crank arm.
  • the first push end and the second push end are both cylindrical and are respectively arranged on the first The outer ends of the 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 from the outer end of the first crank arm.
  • the toggle part has: a paddle, used to contact the touch point of the safety switch element to generate an electrical signal; a toggle lever, one end of which is connected to the pusher The components are linked, and the other end is linked to the pick, which is used to push the pick to break contact with the safety switch element; and the pick holder is equipped with a pick return spring, and one end of the pick is connected to the pick return spring against each other, the other end extends out of the paddle base to link with the lever; the paddle contains: a contact plate, used to touch the safety switch element point contact, the toggle plate is used to contact the toggle lever, and when the touch point of the safety switch element contacts the contact plate, the safety switch element generates an electrical signal; when the touch point of the safety switch element separates from the contact plate , the safety switch element disconnects the electrical signal.
  • the energy storage control mechanism proposed by the present invention may also have the feature of further including a curved rod assembly for pushing the pick to link with the safety switch element, and having: an outer curved rod, the outer end of which extends to the nail gun. Outside the nozzle mechanism, the inner end is linked to the paddle, which is used to make the contact plate contact the trigger point of the safety switch element.
  • the inner curved rod, the outer end is linked to the outer curved rod, and the inner end is combined with the paddle seat.
  • An end of the inner curved rod close to the outer curved rod is provided with a curved rod return spring.
  • the invention also proposes a nail gun, which has the following characteristics, at least including: a casing with an installation cavity provided inside, a nozzle mechanism installed at the front end of the casing, and an energy storage control mechanism installed in the installation cavity.
  • the drive control mechanism is the energy storage control mechanism as mentioned above.
  • Figure 1 is a structural diagram of a nail gun according to Embodiment 1 of the present invention.
  • FIG. 2 is a structural diagram of the nail gun according to Embodiment 1 of the present invention with part of the casing removed.
  • Figure 3 is a partial structural diagram of the nozzle mechanism of Embodiment 1 of the present invention.
  • Figure 4 is a structural diagram of the nail energy storage control mechanism in Embodiment 1 of the present invention.
  • Figure 5 is an installation structural diagram of the nozzle mechanism of Embodiment 1 of the present invention.
  • Figure 6 is an exploded view of the structure of the piston and pushing member in Embodiment 1 of the present invention.
  • Figure 7 is an exploded view of the structure of the striker assembly according to Embodiment 1 of the present invention.
  • Figure 8 is a schematic diagram of the installation structure of the piston and cylinder head base in Embodiment 1 of the present invention.
  • Figure 9 is an installation structural diagram of the one-way rotating component and the reducer in Embodiment 1 of the present invention.
  • Figure 10 is one of the process diagrams of the pushing member cooperating with the piston and pushing the piston to move according to Embodiment 1 of the present invention.
  • Figure 11 is the process in which the pushing member cooperates with the piston and pushes the piston to move according to Embodiment 1 of the present invention. Picture two.
  • Figure 12 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end in Embodiment 1 of the present invention.
  • Figure 13 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end of the control group.
  • Figure 14 is a schematic structural diagram of the safety switch installed in the casing according to Embodiment 1 of the present invention.
  • FIG. 15 is a partial enlarged view of position A in FIG. 14 .
  • Figure 16 is a schematic structural diagram of the pick installed in the pick holder according to the embodiment of the present invention.
  • Figure 17 is an exploded view of the installation structure of the pick and pick holder according to the embodiment of the present invention.
  • FIG. 18 is a partial enlarged view of B in FIG. 14 .
  • Figure 19 is one of the schematic diagrams of the installation position of the safety switch and the bent rod assembly in Embodiment 1 of the present invention.
  • Figure 20 is the second schematic diagram of the installation position of the safety switch and the bent rod assembly in Embodiment 1 of the present invention.
  • Figure 21 is a schematic structural diagram of the safety switch installed in the casing according to Embodiment 2 of the present invention.
  • Fig. 22 is a schematic diagram of the installation position of the safety switch and the bent rod assembly in Embodiment 2 of the present invention.
  • nail gun 10 casing 20, casing 21, front cover 211, rear cover 212, installation part 2121, handle 213, bottom bracket 214, installation slot 2141, nozzle mechanism 30, magazine 31 , gun nozzle bottom plate 32, gun nozzle cover 33, nail passage 34, nail driving mechanism 40, piston 41, first push end 411, second push end 412, fixed part 413, straight socket 4131, Fixing hole 4132, mounting part 414, mounting base 4141, connecting part 415, power supply spring 42, rear fixed plate 421, guide rod 48, guide sleeve 481, pushing member 43, crank 430, first crank arm 4301, second crank Arm 4302, first pushing end 431, second pushing end 432, driving motor 44, motor 441, reducer 442, one-way rotating member 45, ratchet 451, ratchet 4511, pawl 452, pawl shrapnel 453, main switch 46.
  • This embodiment provides a lithium electric nail gun.
  • Figure 1 is a structural diagram of a nail gun according to Embodiment 1 of the present invention.
  • FIG. 2 is a structural diagram of the nail gun according to Embodiment 1 of the present invention with part of the casing removed.
  • the nail gun 10 of this embodiment includes a housing 20, a nozzle mechanism 30, a nail energy storage control mechanism 40 (ie, an energy storage control mechanism), and a power supply unit (lithium battery 60) .
  • the casing 20 is a casing 21 arranged on the outside.
  • the casing 21 is formed by two front and rear cover plates 211 and a rear cover 212 that are interlocked with each other, and a mounting for installing the nail energy storage control mechanism 40 is formed inside. Cavity, the casing 21 can not only accommodate internal components such as the nail energy storage control mechanism 40, but also protect these internal components.
  • the main body casing 21 includes a handle 213 for the user to hold and a bottom bracket 214 connected to the handle 213.
  • the handle 213 and the bottom bracket 214 are both hollow structures.
  • the bottom bracket 214 is provided with an installation slot 2141, and the lithium battery 60 can be Detach and install on the installation groove 2141.
  • the power supply unit is used to power the entire nail gun; the gun mouth mechanism 30 is used to store the gun nails and allow the nails to be struck out; the nail energy storage control mechanism 40 is used to drive the striker to move in a predetermined reciprocating direction. This enables the gun nail to be fired from the gun mouth mechanism 30 to achieve nail shooting.
  • Figure 3 is a partial structural diagram of the nozzle mechanism of Embodiment 1 of the present invention.
  • the muzzle mechanism 30 is arranged at the front end of the casing 21.
  • the muzzle mechanism 30 has a magazine 31 for storing gun nails, a muzzle bottom plate 32 installed on the top of the magazine 31, and a muzzle.
  • the cover plate 33 , the nozzle bottom plate 32 and the nozzle cover plate 33 are provided with a nail passage 34 through which the nails can be ejected.
  • the nail energy storage control mechanism 40 is used to impact the nails so that they are ejected from the nail passage 34 .
  • Figure 4 is a structural diagram of the nail energy storage control mechanism in Embodiment 1 of the present invention.
  • the nail energy storage control mechanism 40 includes a striker assembly, an energy storage assembly and a control assembly.
  • the striker assembly drives out the nails in the nozzle mechanism of the nail gun, and the energy storage assembly is used to provide the striker with The component accumulates energy and causes it to move, and the control component controls the operation of the energy storage component.
  • the firing pin assembly has a piston 41 disposed in the housing 20 and a firing pin 49 for striking the gun nail.
  • the energy storage assembly includes at least one power supply.
  • the guide rod 48 is installed in the housing 20 through a fixed seat.
  • the piston 41 is moved and set on the guide rod 48, and is equipped with a firing pin 49 for striking the gun nail to make it hit out.
  • the power supply spring 42 is set on the guide rod 48.
  • One end of the outer circumference of the rod 48 is in contact with the piston 41 and is compressed and stored under the push of the piston 41.
  • the outer circumference of the guide rod is also equipped with a guide sleeve 4221.
  • the guide sleeve 4221 is located between the power supply spring 42 and the guide rod 48. between.
  • the fixing base includes a front fixing plate 422 and a rear fixing plate 421 for respectively fixing the front and rear ends of the guide rod 48.
  • a slot structure is provided in the installation cavity inside the casing 21.
  • the slot structure The front end is fixed to the front fixing plate 422 (in this embodiment, the front fixing plate 422 is a sheet-like structure), the rear end is fixed to the rear fixing plate 421 (in this embodiment, the rear fixing plate 421 is also in a sheet-like structure), the front fixing plate 422
  • a pair of parallel guide rods 48 are provided between the rear fixed plate 421 and the piston 41 is located on the side of the guide rod 48 close to the front fixed plate 422, and the guide rod 48 passes through the piston 41 and is fixed on the front fixed plate 422 with bolts.
  • a buffer pad 423 is also provided between the fixed plate 422 and the piston 41 to slow down the collision between the piston 41 and the front fixed plate 422 during its movement.
  • two power supply springs 42 are provided side by side. The front end of the power supply spring 42 is in contact with the piston 41, and the rear end is in contact with the rear fixed plate 421.
  • the two power supply springs 42 They are respectively sleeved on the outer peripheries of the two guide rods 48.
  • One end of the guide rods 48 is fixed to the rear fixed plate 421 through screws, and the other end passes through the piston 41 and is fixed to the front fixed plate 422.
  • the guide rod 48 is used to guide the piston 41 to reciprocate in a predetermined direction.
  • the guide sleeves 481 which are respectively sleeved on the outer periphery of the two guide rods 48 and located inside the power supply spring.
  • the length of the guide sleeve 4221 is shorter than the power supply spring 42 and is compressed to the set limit position.
  • the length of the guide sleeve (the length of the guide sleeve is generally designed on the premise that the guide sleeve and the piston do not interfere when the piston moves to the limit position toward the side of the power supply spring.
  • the guide sleeve 481 is in the shape of a cylinder with a small friction coefficient (generally made of nylon and polyformaldehyde, and can also be replaced by other similar materials). It is arranged inside the power supply spring 42. When the power supply spring 42 is being moved When compressing or recovering, the guide sleeve can move on the guide rod along the compression or recovery direction. The guide sleeve can not only guide the power supply spring 42, but also prevent the power supply spring from deforming in other directions, reducing the risk of deformation of the power supply spring in other directions. The wear of the power supply spring extends the service life of the power supply spring, and at the same time, it can also reduce the friction force during compression of the power supply spring, making the compression process of the power supply spring smoother.
  • the front end of the piston 41 is equipped with a firing pin 49 for striking the gun nail to launch it.
  • the rear end of the piston 41 cooperates with the power supply spring 42, and the piston 41 can be driven to move under the drive of the power supply spring 42 (i.e., the power supply spring 42 used to provide power for the movement of piston 41).
  • the pushing member 43 has a pushing end toward the piston 41, and is used to push the piston 41 toward the end where the power supply spring 42 is located, so that the power supply spring 42 can perform compression and energy storage.
  • the piston 41 is provided with a push end that cooperates with the push end.
  • the push end has a first push end 411 and a second push end 412.
  • the first push end 411 drives nails along the piston 41.
  • the gun extends in the nail shooting direction, 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 that cooperates with the first pushing end 411 and a second pushing end 432 that cooperates with the second pushing end 412. Both the first pushing end 431 and the second pushing end 432 are cylindrical. structure, during the rotation process, the pushing member 43 can drive the first pushing end 431 and the second pushing end 432 to rotate, and the outer diameter of the second pushing end 432 is smaller than the outer diameter of the first pushing end 431, and the second pushing end 432 The height of is also lower than the height of the first pushing end 431.
  • Figure 5 is an installation structural diagram of the nozzle mechanism of Embodiment 1 of the present invention.
  • the front fixing plate 422 is located in front of the piston 41 along the striking direction, and has a mounting plate 4221 extending forward from the lower end, and a nozzle bottom plate 32
  • the front end of the firing pin 49 in the middle of the piston 41 passes through the middle of the front fixing plate 422 and is inserted into the nail channel 34 between the bottom plate 32 and the nozzle cover 33.
  • the left and right sides of the front fixing plate 422 are fixed to the casing through screws 4222.
  • Figure 6 is an exploded view of the structure of the piston and pushing member in Embodiment 1 of the present invention.
  • Figure 7 is an exploded view of the structure of the striker assembly according to Embodiment 1 of the present invention.
  • Figure 8 is a schematic diagram of the installation structure of the piston and cylinder head base in Embodiment 1 of the present invention.
  • a fixing portion 413 is provided on the side of the piston 41 facing the gun nail for fixing the firing pin 49.
  • the fixing portion 413 is generally cylindrical, and the middle portion is opened along the horizontal direction (ie, the axial direction of the cylinder).
  • the fixing hole 4132 is a threaded hole, and one end of the striker 49 is inserted into a In the font socket 4131, a mounting hole 491 corresponding to the fixing hole 4132 is opened at the end of the striker 49.
  • Bolts 416 or screws are inserted into the fixing hole 4132 to fix the striker 49 on the fixing part 413.
  • the striker 49 is installed between the striker 49 and the piston 41 through a threaded connection. This installation is a detachable installation method. When the striker 49 is worn and needs to be replaced, you only need to remove the bolt, and the striker 49 can be removed. It is very convenient to take it out and replace it, and there is no damage to the piston. There is no need to replace the piston. save costs.
  • a mounting portion 414 for mounting the power supply spring 42 is provided on the rear side of the fixing portion 413.
  • the mounting portion 414 is two conical mounting seats 4141 provided corresponding to the power supply spring (as shown in Figures 6 and 8, the cones are The specific shape is a cylindrical shape in the middle, and a number of triangular reinforced structures are distributed around the cylindrical periphery).
  • the mounting base 4141 has a large end with a larger width and a small end with a smaller width.
  • the guide sleeve 481 has a guide hole in the middle.
  • the center hole through which the rod 48 passes has a diameter smaller than the diameter of the small end, which can prevent the guide sleeve 481 from being stuck on the mounting seat 4141 of the piston 41 during the movement of the guide rod 48.
  • Through holes 4223 are provided in the middle of the mounting base 4141, the front fixing plate 422 and the buffer pad 423 at corresponding positions. The front ends of the two guide rods 48 pass through the corresponding through holes 4223
  • the fixing part 413 and the mounting part 414 are connected through a plate-shaped connecting part 415.
  • the lower end of the connecting part 415 extends downward (in the direction of the pushing member 43) to form a second pushing end 412.
  • One end of the second pushing end 412 The side extends toward the direction of 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 second embodiment of the front fixing plate 422 it is only a square sheet structure. In this case, the nozzle mechanism is directly fixed to the casing 20 without being connected to the front fixing plate 422. To fix, just fix the nozzle bottom plate 32 to the casing 20 through bolts.
  • the first pushing end 431 and the second pushing end 432 are cylindrical structures, and the pushing member 43 also has a crank 430, which contains a first crank arm 4301 and a second crank arm 4302.
  • the first pushing end 431 is installed on the outer end of the first crank arm 4301
  • the second pushing end 432 is installed on the outer end of the second crank arm 4302.
  • the first crank arm 4301 and the second crank arm 4302 are of equal length, forming an angle between the two, and the outer ends of both are arc-shaped.
  • the outer edge of the first pushing end 431 protrudes from the outer end of the first crank arm 4301, and the outer edge of the second pushing end 432 is flush with the outer end of the second crank arm 4302 or is slightly concave.
  • the driving motor 44 includes a motor body 441 and a reducer 442.
  • the reducer 442 is installed on the output shaft of the motor body 441.
  • the pushing member 43 is installed on the output end of the reducer 442, and there is a
  • the one-way rotating member 45 is driven by the motor body 441 and the reducer 442 to push the member 43 to rotate in one direction.
  • the motor body 441 of this embodiment is a brushless motor.
  • the reducer 442 is installed on the output shaft of the motor body 441 and is used to reduce the output speed of the motor body 441, thereby obtaining higher output torque, that is, greater driving force.
  • the one-way rotation member 45 is used to limit the rotation direction of the output end 443 of the drive motor 44 (ie, the output shaft of the reducer 442) so that it can only rotate in one direction.
  • the one-way rotating member 45 is installed on the output shaft of the reducer 442, and forms a hole shaft fit with the output shaft, so that The output shaft can only rotate in one direction.
  • the pushing member 43 is pushed by the pushing force of reverse rotation, the one-way rotating member 45 bears the pushing force so that the pushing force is not transmitted to the output shaft, thereby protecting the motor body 441 .
  • the specific structures of the motor body 441 and the reducer 442 can adopt structures in the prior art.
  • the driving motor and pushing member 43 are located almost directly below the piston 41, making the entire structure more compact, and gravity is concentrated in the middle of the entire nail gun. Compared with placing the motor and the Setting the driving components on the side is more stable and the force is more even, and does not take up extra space.
  • crank 430 is installed at the output end of the reducer 442 through the through hole, and the crank 430 can follow the motor.
  • the main body 441 and the reducer 442 rotate. Designing the pushing member 43 in the shape of a crank 430 is lighter than the disc and other structures in the prior art, which not only saves materials, but also reduces energy consumption and makes the transmission effect better.
  • the first pushing end 431 and the second pushing end 432 on it will follow the crank 430 to perform an arc-shaped movement, and interact with the first pushing end 411 and the second pushing end 412 on the piston 41 respectively.
  • the piston 41 is pushed toward the energy storage direction.
  • the shape and height of the first pushing end 431 correspond to the setting of the first pushing end 411
  • the shape and height of the second pushing end 432 correspond to the setting of the second pushing end 412 .
  • Figure 9 is an installation structural diagram of the one-way rotating component and the reducer in Embodiment 1 of the present invention.
  • the one-way rotating member may be a one-way bearing, or may be a ratchet and ratchet structure as shown in FIG. 9 .
  • the one-way bearing is a commonly used structure and will not be described in detail here.
  • the ratchet and ratchet structure in this embodiment will be mainly introduced.
  • the one-way rotating member 45 has a ratchet 451 , a pawl 452 and a pawl spring piece 453 .
  • the ratchet 451 is sleeved on the output end 443 and has a number of ratchet teeth 4511 .
  • the pawl 452 is located on the ratchet wheel 451 .
  • the pawl 452 is used to be inserted between the ratchet teeth 4511 and cooperate with it to make the ratchet wheel 451 rotate in one direction.
  • One end of the pawl spring piece 453 is fixed on the reducer 443 through a bolt, and the other end is against the ratchet.
  • Figure 10 is one of the process diagrams of the pushing member cooperating with the piston and pushing the piston to move according to Embodiment 1 of the present invention.
  • Figure 11 is the second process diagram of the pushing member cooperating with the piston and pushing the piston to move according to Embodiment 1 of the present invention.
  • the pushing member 43 rotates clockwise driven by the motor body 441.
  • the second pushing end 432 moves to the second pushing end 412 and interacts with the second pushing end 412.
  • the second pushing end 412 is in contact with each other.
  • the pushing member 43 continues to rotate.
  • the second pushing end 432 makes an arc-shaped movement generally toward the energy storage direction.
  • the second pushing end 412 exerts a force on the piston 41 generally toward the energy storage direction. Under the action of the arc-shaped driving force, the piston 41 can move in the energy storage direction along the guide rod 48 and compress the power supply spring 42 to store energy.
  • the first stage of energy storage is completed.
  • the pushing member 43 continues to rotate, and the second pushing end 432 rotates and breaks away from the second pushing end 412.
  • the first pushing end 431 rotates to the first pushing end 411 and abuts against the first pushing end 411.
  • the first push end 431 pushes the piston 41 further in the energy storage direction in the same way until the first push end 431 rotates in the energy storage direction to the maximum stroke, completing the second stage of energy storage, thus completing the entire spring energy storage. process.
  • the motor body 441 drives the pushing member 43 to continue to rotate, and the first pushing end 431 rotates and breaks away from the first pushing end 411 .
  • the first pushing end 431 and the second pushing end 432 are both located on the piston 41 Outside the motion path, the piston 41 can move in the nail-shooting direction under the elastic force of the power supply spring 42 until the firing pin 49 hits the nail to prompt the nail to be ejected, completing the nail-shooting process.
  • the crank 430 will not reversely rotate under the force of the piston 41, resulting in mistaken nail firing.
  • the motor body 441 is used to drive the pushing member 43 to rotate, and then push the piston 41 to move through the pushing member 43, causing the power supply spring 42 to be compressed and accumulate energy, and finally push out the piston 41 through the elastic force of the power supply spring 42.
  • Figure 12 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end in Embodiment 1 of the present invention.
  • Figure 13 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end of the control group.
  • the first pushing end 431 and the second pushing end 432 of this embodiment are both cylindrical, and the outer diameter of the second pushing end 432 is set smaller than the outer diameter of the first pushing end 431, and the outer diameters of the two are not equal.
  • This design method can enlarge the stroke of the piston compared to designing the outer diameters to be equal. The inventor conducted a reference experiment on this as follows:
  • the outer diameter of the first pushing end 431 is 18mm (radius is 9mm)
  • the outer diameter of the second pushing end 432 is 14mm (radius is 7mm)
  • the first pushing end of the piston The distance between the end 411 and the second pushing end 412 is 35mm, and the working stroke that can be achieved in the experiment is 81.5mm.
  • the outer diameters of the first push end 431 and the second push end 432 are both 14 mm (radius 7 mm), and the first push end 411 to the second push end of the piston End 412 The distance between them is 35mm, and the working stroke that can be achieved in the experiment is 79.5mm, which is obviously smaller than the stroke that can be achieved in this embodiment.
  • the working stroke is S
  • the distance between the first pushing end and the second pushing end of the piston is L
  • the angle between the first pushing end 431 and the second pushing end 432 is n (that is, between the first crank arm 4301 and the second push end 432)
  • the working stroke of the piston is longer (R1-R2) than when the diameters are equal. That is to say, the outer diameter of the pushing end is adjusted as much as possible without changing the length of the pushing end of the piston to obtain the maximum working stroke.
  • the larger the working stroke the greater the amount of compression of the power supply spring 42, so that a better working stroke can be obtained.
  • the large energy can shoot the gun nails more powerfully and quickly.
  • the design length of the nail gun should be reduced as much as possible, which will also facilitate operation, packaging and transportation.
  • the nail energy storage control mechanism 40 also 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.
  • the motor body 441 can be controlled to start running.
  • the main switch 46 is a button-type switch.
  • the specific structure can adopt the structure in the prior art. It has a pressing part 461 and a main switch element 462.
  • the main switch element 462 can generate a corresponding starting electrical signal when the pressing part 461 is pressed; safety.
  • the switch 47 is a linkage type switch and has a toggle part 471 and a safety switch element 472.
  • the safety switch element 472 can generate an electrical signal when in contact with the toggle part 471.
  • the main switch component 462 and the safety switch component 472 are both micro switches. When both the main switch element 462 and the safety switch element 472 generate electrical signals, the motor body 441 operates to drive the pushing member 43 to rotate to complete the above spring energy storage process.
  • Figure 14 is a schematic structural diagram of the safety switch installed in the casing according to Embodiment 1 of the present invention.
  • FIG. 15 is a partial enlarged view of position A in FIG. 14 .
  • Figure 16 is a schematic structural diagram of the pick installed in the pick holder according to the embodiment of the present invention.
  • Figure 17 is an exploded view of the installation structure of the pick and pick holder according to the embodiment of the present invention.
  • the toggle portion 471 of the safety switch 47 has a paddle 4711, a lever 4712, and a paddle base 4713 for installing the paddle 4711.
  • the paddle 4711 is located on one side of the safety switch element 472, and Connect with it.
  • the linkage method is: a touch point 4721 is provided on one side of the safety switch element 472, the paddle 4711 is hook-shaped and installed on the paddle base 4713.
  • the paddle 4711 has a contact plate 47111, a toggle plate 47112 and is used to connect the contact plate 47111 and the connecting plate 47113 of the toggle plate 47112.
  • the contact plate 47111 is arranged toward the touch point 4721 of the safety switch element 472 for contact with the touch point 4721.
  • the safety switch element When the touch point 4721 comes into contact with the contact plate 47111, the safety switch element will generate an electrical signal; the outer end of the toggle plate 47112 The paddle base 4713 is extended to be in contact with the paddle 4712. The length of the contact plate 47111 is less than the length of the paddle plate 47112. The length difference between the two forms a gap. Under the push of the paddle 4712, the paddle The plate 47112 will move toward the paddle base 4713 side, thereby moving the contact plate 47111 with it, and gradually separate from the touch point 4721. When the touch point 4721 is located in the vacant part, the safety switch element 472 will disconnect the electrical signal.
  • a spring seat 47131 is also provided on the paddle seat 4713. The inner end of the spring seat 47131 is provided with a paddle return spring 47114 toward one end of the paddle 4711. The paddle return spring 47114 is against the paddle 47111. On the connecting plate 47113 of the piece 4711.
  • FIG. 18 is a partial enlarged view of B in FIG. 14 .
  • the lever 4712 is in the shape of a long rod with one end bent, and is used to control the movement of the paddle 4711.
  • the details are as follows: the lever 4712 includes a first lever 47121 and a second lever 47122.
  • the end of the first lever 47121 is set close to the pushing end of the pushing member 43, and a collision will occur during the rotation of the pushing end ( scratch);
  • the end of the second toggle lever 47122 is located inside the paddle 4711, and a pin 47123 is provided at the connecting section between the first toggle lever 47121 and the second toggle lever 47122.
  • the back cover of the housing 20 A mounting portion 2121 for the pin 47123 is protrudingly provided inside the 212, and the lever 4712 is rotatably mounted on the mounting portion 2121 through the pin 47123.
  • the first toggle lever 47121 and the second toggle lever 47122 are set in an offset position, that is, the first toggle lever 47121 and the second toggle lever 47122 are not collinear, and the entire toggle lever 4712 is in a shape similar to Z. font, and the length of the first toggle lever 47121 is smaller than the length of the second toggle lever 47122.
  • the lever principle once the first toggle lever 47121 is scratched by the pushing end, the second toggle lever 47122 will contact the first toggle lever 47122.
  • the moving rod 47121 rotates in the opposite direction, thereby touching the paddle 4711 and pushing the paddle 4711.
  • the purpose of designing the two to be misaligned is to allow the first toggle lever 47121 to have enough space when rotating, and to allow the second toggle lever 47122 to obtain the required stroke when pushing the paddle 4711.
  • Figure 19 is one of the schematic diagrams of the installation position of the safety switch and the bent rod assembly in Embodiment 1 of the present invention.
  • the safety switch element 472 is in a state of having an electrical signal, that is, the trigger point 4721 is in contact with the contact plate 47111 of the paddle.
  • the pushing end of the pushing member 43 rotates clockwise, once it scratches the first Once the lever 47121 is toggled, the first toggle lever 47121 will rotate inward.
  • the second toggle lever 47122 will rotate outward, hit the toggle plate 47112 of the paddle 4711, and push the paddle 4711 Move toward the outside, so that the contact plate 47111 leaves the touch point 4721.
  • the safety switch element 472 cuts off the electrical signal, and the driving motor also stops working immediately.
  • toggle return spring 47114 Since there is a toggle return spring 47114 between one side of the paddle 4711 and the paddle holder, when there is no contact between the pushing end and the first toggle end 47121, the toggle return spring 47114 will push the paddle 4711 inward. Reset, the first toggle lever 47121 and the second toggle lever 47122 are also reset one after another.
  • An inclined guide surface may be provided on the outside of the first toggle lever 47121 to facilitate the collision of the pushing end with the first toggle lever 47121 during rotation.
  • Figure 20 is the second schematic diagram of the installation position of the safety switch and the bent rod assembly in Embodiment 1 of the present invention.
  • the nail energy storage control mechanism 40 also includes a curved rod assembly 50, which is used to push the paddle 4711 to link with the safety switch element 472.
  • the bending rod assembly 50 has an outer bending rod 51 and an inner bending rod 52.
  • the outer end of the outer bending rod 51 extends out of the casing 20 and is installed on the nozzle cover of the nozzle mechanism through a pressure plate 53. 33, and the outer end protrudes from the nozzle mechanism, and the inner end of the outer curved rod 51 is inserted into the inside of the casing 20 to be linked with the inner curved rod 52.
  • the inner curved lever 52 has a short side 521 and a long side 522 arranged perpendicularly to each other.
  • the outside of the short side 521 is in contact with the inner end of the outer curved lever 51, and the long side 522 extends to the pick seat. 4713 near, and the end is bent toward the pick seat 4713 to form a contact section 5221.
  • the pick seat 4713 is provided with a jack 47132, and the end of the touch section 5221 is inserted into the jack 47132 so that the touch section 5221 and The paddle base 4713 is connected.
  • the nail gun When using the nail gun, first align the nozzle mechanism located on the front side to the target site to be nailed. Since the outer end of the outer curved rod 51 protrudes from the nozzle mechanism, when the outer end reaches the target site , will produce a reaction force on the outer bending rod 51, causing the outer bending rod 51 to move toward the side of the nail gun, and the inner end of the outer bending rod 51 will touch the short side 521 of the inner bending rod 52, thus pushing the inner bending rod 52 toward the nail gun. During the movement, the outer curved rod 51 will drive the paddle base 4713 to move toward the safety switch element 472, so that the contact plate 47111 on the paddle 4711 in the paddle base 4713 is in contact with the touch point 4721 of the safety switch element 472.
  • a crank-bar return spring 55 is provided between the short side 521 of the inner curved rod 52 and the front fixing plate 422, which can prompt the crank-bar assembly to reset.
  • the user takes the nail gun.
  • the bending rod return spring 55 will drive the inner bending rod 52 and the outer bending rod 51 to reset.
  • the outer end of the outer curved rod 51 is also provided with a protective cover 54. By contacting the protective cover 54 with the target part, the wear of the outer end of the outer curved rod 51 can be reduced and the service life of the outer curved rod can be extended.
  • the motor body 441 drives the pushing member 43 to continue to rotate, and the first pushing end 431 rotates and breaks away from the first pushing end 411 .
  • the first pushing end 431 and the second pushing end 432 are both located on the piston 41 Outside the motion path, the piston 41 can move in the nail-shooting direction under the elastic force of the power supply spring 42 until the firing pin 49 hits the nail to prompt the nail to be ejected, completing the nail-shooting process.
  • Figure 21 is a schematic structural diagram of the safety switch installed in the casing according to Embodiment 2 of the present invention.
  • Fig. 22 is a schematic diagram of the installation position of the safety switch and the bent rod assembly in Embodiment 2 of the present invention.
  • the toggle part 471' of the safety switch 47' has a toggle piece. 4711' and the toggle lever 4712', the toggle piece 4711' is located on one side of the safety switch element 472' and is linked with it.
  • the linkage method is: a switch protrusion 4721' is provided on one side of the safety switch element 472', and a trigger end 47111' is provided on the toggle piece 4711'. When the trigger end 47111' touches the switch protrusion 4721', Triggering the safety switch element 472' is turned on to generate an electrical signal.
  • An open slot 47112' is provided on the side of the trigger end 47111'.
  • the toggle rod 4712' is in the shape of a long rod with one end bent, and is used to control the movement of the toggle piece 4711'.
  • the toggle lever 4712' includes a first toggle end 47121' and a second toggle end 47122'.
  • the end of the first toggle end 47121' is disposed close to the pushing end of the pushing member 43', and rotates at the pushing end.
  • the end of the second toggle end 47122' is located inside the toggle piece 4711', and a connecting section between the first toggle end 47121' and the second toggle end 47122' is provided with a
  • the pin 47123' and the rear cover 212' of the housing are protrudingly provided with an installation site for the pin 47123', and the toggle lever 4712' is rotatably mounted on the installation site through the pin 47123'. (The structure of the toggle lever and the installation structure between it and the housing are the same as those in Embodiment 1).
  • the toggle return spring 47113' When there is no contact between the pushing end and the first toggle end 47121', the toggle return spring 47113' will turn the toggle piece 4711 'Push inward to reset, and the first toggle end 47121' and the second toggle end 47122' are also reset one after another.
  • An inclined guide surface 471211' is provided on the outside of the first toggle end 47121', so that the pushing end can collide with the first toggle end 47121' when rotating.
  • the nail driving mechanism 40 also includes a curved rod assembly 50', which is used to push the toggle piece 4711' to link with the safety switch element 472'.
  • the bending rod assembly 50' has an outer bending rod 51' and an inner bending rod 52'.
  • the outer end of the outer bending rod 51 extends out of the casing 20, and the outer end protrudes from the gun mouth mechanism.
  • the inner end of the outer bending rod 51' Linked with the inner curved rod 52'.
  • the inner curved rod 52' has a short side 521' and a long side 522' arranged perpendicularly to each other.
  • the outside of the short side 521' is in contact with the inner end of the outer curved rod 51', and the long side 522' extends to Near the toggle piece 4711', the end is bent toward the toggle piece 4711' to form a contact section 5221'.
  • a touch plate 47114' is provided on the toggle piece 4711' close to the touch section 5221', and an opening slot 47112' is located between the touch plate 47114' and the trigger.
  • a bending rod return spring 55' is provided on one side of the contact section 5221'.
  • the power supply spring begins to store energy, and then the gun nail is struck out to realize nail shooting.
  • the curved rod return spring 55' will drive the inner curved rod 52' and the outer curved rod 51' to reset.
  • the outer end of the outer curved rod 51' is also provided with a protective cover 54'. By contacting the protective cover 54' with the target part, the wear of the outer end of the outer curved rod 51' can be reduced and the service life of the outer curved rod can be extended. service life.
  • the striker 49 is installed between the striker 49 and the piston 41 through a threaded connection.
  • This installation is a detachable installation method.
  • the firing pin 49 can be taken out and replaced, which is very convenient and does not cause damage to the piston. There is no need to replace the piston, thus saving costs.
  • the guide sleeve 481 can not only guide the movement direction of the force supply spring 42 to prevent the force supply spring 42 from bending and deforming in other directions during contraction, but also reduce the wear and friction of the force supply spring 42 during movement, thereby extending the service life of the force supply spring 42, contracting more smoothly, and storing energy more quickly.
  • the toggle part 471 of the safety switch 47 since the toggle part 471 of the safety switch 47 has a paddle 4711, a paddle 4712 and a paddle seat 4713, the paddle 4711, the paddle 4712, the paddle
  • the mutual linkage between the seat 4713 and the pushing member 43 plays the role of turning on the safety switch 47 and disconnecting the electrical signal. It belongs to the mechanical structure control method without the need to set up an additional controller, thereby saving money. The cost and control can also be more stable.
  • a pushing member 43 is provided, and the pushing member 43 directly cooperates with the piston 41 to push the piston 41 to move toward the power supply spring 42, thereby allowing the piston 41 to move toward the power supply spring 42.
  • the power supply spring 42 performs compression and energy storage, and there is no direct contact between the pushing member 43 and the striker 49, which avoids the impact of the contact with the striker 49 on the movement of the piston 41, making the entire energy storage process smoother and more stable.
  • the pushing member 43 has a pushing end facing the piston 41, and the pushing end contacts the pushing end on the piston 41 during further rotation to urge the piston to move, and the pushing end has a first pushing end 431 and a third pushing end.
  • the two push ends 432 can perform the first stage of energy storage and the second stage of energy storage respectively, maximizing the energy storage capacity of the power supply spring 42; at the same time, the outer diameters of the first push end 431 and the second push end 432 are different. , so that the outer diameter of the pushing end can be adjusted as much as possible without changing the length of the pushing end of the piston 41 to obtain the maximum working stroke of the piston 41. The larger the working stroke, the greater the amount of compression of the power supply spring 42, so that It can obtain greater energy and shoot the gun nails more powerfully and quickly.
  • the pushing member 43 is designed in the shape of a crank 430, which is lighter than the disk and other structures in the prior art. This not only saves materials, but also reduces energy consumption and makes the transmission effect better.
  • the nail energy storage control mechanism provided according to the above embodiment also has a control component.
  • the control component includes a main switch 46 and a safety switch 47.
  • the two switches are connected in series and connected to the drive motor. Therefore, they can directly control the main switch 46 and the safety switch 47.
  • the nail firing electrical signal and the safety electrical signal generated by the switch 47 control the motor body 441 of the nail gun 10.
  • the main switch 46 and the safety switch 47 are set in series, so only when the nail firing electrical signal and the safety electrical signal are received at the same time and this Only when both signals are valid can the motor body 441 be controlled to start, so as to perform nail shooting.
  • the nail-shooting energy storage control mechanism adopts a double-switch and double-safety design, the safety during the nail-shooting process is also ensured. Furthermore, through the nail energy storage control mechanism of the above embodiment, the nail gun 10 can turn on the safety switch through the curved rod assembly when it touches the target position, and when the main switch 46 is pressed, that is, when it is started. It will automatically start to store energy and remain in the state where the energy storage is completed. Therefore, the user only needs to press a switch to directly extract the nail, which is very convenient to operate.
  • the one-way rotating component at the output end of the drive motor can be replaced by a ratchet and pawl structure with a one-way bearing, and the same purpose can be achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

La présente invention concerne le domaine technique des outils de fixation, et en particulier un ensemble percuteur, un mécanisme de commande de stockage d'énergie et un pistolet à clous. L'ensemble percuteur comprend : un piston agencé de façon mobile dans un logement, et un percuteur monté de façon amovible sur le piston et utilisé pour frapper une broche de pistolet, le côté du piston faisant face à la broche de pistolet étant pourvu d'une partie de fixation, l'extrémité du percuteur étant reliée à la partie de fixation au moyen de filetages, et le côté du piston opposé à un mécanisme de buse de pistolet étant pourvu de sièges de montage servant à monter des ressorts d'alimentation en force du pistolet à clous. Selon l'ensemble percuteur, le mécanisme de commande de stockage d'énergie et le pistolet à clous de la présente invention, étant donné que l'extrémité d'un percuteur est reliée à une partie de fixation d'un piston au moyen de filetages, le percuteur peut être directement détaché et remplacé de façon pratique sans nécessiter le remplacement du piston dans son ensemble, facilitant ainsi le remplacement et économisant les coûts.
PCT/CN2023/080038 2022-09-15 2023-03-07 Ensemble percuteur, mécanisme de commande de stockage d'énergie et pistolet à clous WO2024055539A1 (fr)

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CN202211125037.8 2022-09-15
CN202211125037.8A CN117733797A (zh) 2022-09-15 2022-09-15 撞针组件、蓄能控制机构以及射钉枪

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050121491A1 (en) * 2003-12-03 2005-06-09 Shin-Nan Chang Striker assembly for a nailer
CN105856173A (zh) * 2016-05-13 2016-08-17 浙江普莱得电器有限公司 单开关联动控制装置及钉枪
CN113977529A (zh) * 2021-11-29 2022-01-28 台州市大江实业有限公司 撞针驱动机构以及射钉枪
CN216608880U (zh) * 2021-11-29 2022-05-27 台州市大江实业有限公司 射钉枪用供力单元、射钉驱动机构以及射钉枪
CN216608883U (zh) * 2021-11-29 2022-05-27 台州市大江实业有限公司 撞钉组件以及射钉枪
CN218313325U (zh) * 2022-09-15 2023-01-17 台州市大江实业有限公司 射钉驱动机构以及射钉枪
CN218785542U (zh) * 2022-09-15 2023-04-04 台州市大江实业有限公司 撞针组件、蓄能控制机构以及射钉枪
CN218802051U (zh) * 2022-09-15 2023-04-07 台州市大江实业有限公司 活塞驱动组件、驱动控制机构以及射钉枪

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050121491A1 (en) * 2003-12-03 2005-06-09 Shin-Nan Chang Striker assembly for a nailer
CN105856173A (zh) * 2016-05-13 2016-08-17 浙江普莱得电器有限公司 单开关联动控制装置及钉枪
CN113977529A (zh) * 2021-11-29 2022-01-28 台州市大江实业有限公司 撞针驱动机构以及射钉枪
CN216608880U (zh) * 2021-11-29 2022-05-27 台州市大江实业有限公司 射钉枪用供力单元、射钉驱动机构以及射钉枪
CN216608883U (zh) * 2021-11-29 2022-05-27 台州市大江实业有限公司 撞钉组件以及射钉枪
CN218313325U (zh) * 2022-09-15 2023-01-17 台州市大江实业有限公司 射钉驱动机构以及射钉枪
CN218785542U (zh) * 2022-09-15 2023-04-04 台州市大江实业有限公司 撞针组件、蓄能控制机构以及射钉枪
CN218802051U (zh) * 2022-09-15 2023-04-07 台州市大江实业有限公司 活塞驱动组件、驱动控制机构以及射钉枪

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