WO2024055535A1 - 射钉驱动机构以及射钉枪 - Google Patents

射钉驱动机构以及射钉枪 Download PDF

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Publication number
WO2024055535A1
WO2024055535A1 PCT/CN2023/079385 CN2023079385W WO2024055535A1 WO 2024055535 A1 WO2024055535 A1 WO 2024055535A1 CN 2023079385 W CN2023079385 W CN 2023079385W WO 2024055535 A1 WO2024055535 A1 WO 2024055535A1
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WO
WIPO (PCT)
Prior art keywords
pushing
toggle
piston
nail
driving mechanism
Prior art date
Application number
PCT/CN2023/079385
Other languages
English (en)
French (fr)
Inventor
黄锦全
杨涛
李海军
厉敏
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 WO2024055535A1 publication Critical patent/WO2024055535A1/zh

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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
    • 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 nail driving 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 applicant's prior patent CN215395034U please refer to the applicant's prior patent CN215395034U.
  • the driving structure uses a gear and a striker with a tooth slot to cooperate to promote the energy storage of the power supply spring.
  • phenomena such as wear and tooth jamming are prone to occur, resulting in unsmooth transmission or even the nail gun being directly jammed, making it impossible to shoot nails.
  • a nail driving mechanism with a compact structure the spring energy storage directly relies on the driving piston to move, the energy storage process is smoother, and it is easier to operate, and a nail gun using such a driving mechanism.
  • the present invention adopts The following technical solutions:
  • a nail driving mechanism is provided in a nail gun with a casing, and is used to drive the nails of the nail gun to strike out. It has the following characteristics, including: a piston, which is movable and disposed in the casing, and is equipped with a The firing pin; at least one power supply spring, one end of which is in contact with the piston, is used to provide power for the movement of the piston; the pushing member has a pushing end facing the piston, and is used to push the piston to move towards the power supply spring, so that the power supply spring Perform compression and energy storage; and drive the motor to drive the pushing member to rotate; wherein, the piston is provided with a push end that cooperates with the push end, and the push end has: a first push end, from the piston along the nail gun Extending out in the nail shooting direction, the second push end extends from the piston toward the push member. The push end has: a first push end for cooperating with the first push end, and a second push end for cooperating with the third push end. The two pushing ends cooperate with each other,
  • the nail driving mechanism proposed by the present invention also has the feature that the pushing member also has There is a crank, the crank includes: a first crank arm used to install the first push end, a second crank arm used to install the second push end, and the same length as the first crank arm, the first crank arm and the second crank arm An angle is formed between the arms.
  • the nail driving mechanism proposed by the present invention also has the following characteristics, wherein the first pushing end and the second pushing end are both cylindrical and are respectively provided 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 from the outer end of the first crank arm.
  • the nail driving mechanism proposed by the present invention also has the feature that it also includes a control component.
  • the control component has: a main switch with a pressing part and a main switching element.
  • the main switching element generates a signal when the pressing part is pressed.
  • a safety switch has a toggle part and a safety switch element, and the safety switch element generates an electrical signal when in contact with the toggle part; wherein the main switch element and the safety switch element are connected in series.
  • the driving motor runs, and when the pushing member rotates under the driving of the driving motor, the first pushing end contacts the first pushing end and pushes the first pushing end, so that the piston moves toward the power supply spring, Thereby, the power supply spring performs the first stage of energy storage.
  • the second push end contacts the second push end and pushes the second push end so that the piston moves toward the power supply spring. movement, causing the power supply spring to perform the second stage of energy storage.
  • the nail driving mechanism proposed by the present invention also has the following feature, wherein the toggle part has: a toggle piece for linkage with the safety switch element, a toggle rod with one end for linkage with the toggle piece, and the other end of the toggle rod is used for linkage with the toggle piece. One end is used to link with the push end.
  • the toggle piece contains a trigger end for contacting the safety switch element and an opening slot for disconnecting from the safety switch element.
  • One side of the toggle piece is provided with a toggle lever, and the other side
  • a toggle return spring for urging the toggle piece to return is provided.
  • the nail driving mechanism proposed by the present invention also has the following feature, wherein the toggle lever includes: a first toggle end, which is arranged close to the push end and is provided with a guide slope for contacting the push end; a second toggle lever The moving end is set close to the toggle piece; and the connecting section is used to connect the first toggle end and the second toggle end, and is set in the housing through the rotation of the pin; when the push end scratches the first toggle end during rotation When moving the end, the second toggle end contacts the toggle piece and pushes the toggle piece to move.
  • the toggle lever includes: a first toggle end, which is arranged close to the push end and is provided with a guide slope for contacting the push end; a second toggle lever The moving end is set close to the toggle piece; and the connecting section is used to connect the first toggle end and the second toggle end, and is set in the housing through the rotation of the pin; when the push end scratches the first toggle end during rotation When moving the end, the second toggle end contacts the toggle piece and pushes the toggle piece to move.
  • the nail driving mechanism proposed by the present invention also has the feature that it also includes a curved rod assembly for pushing the toggle piece to link with the safety switch element, and has: an outer curved rod, the outer end of which extends to the nail gun. Outside the gun nozzle mechanism, the inner end is inserted into the casing of the nail gun. There is an inner curved rod. The outer end is linked to the outer curved rod. The inner end is linked to the toggle piece. An end of the inner curved rod close to the toggle piece is provided with a curved rod. Return spring.
  • the nail driving mechanism proposed by the present invention also has such a feature, in which the inner end of the inner curved rod is provided with a touching section, and the toggle piece also contains a touching plate for matching with the touching section, and the opening The slot is between the touch plate and the trigger end.
  • the invention also proposes an electric nail gun, which has the following characteristics, at least including: a housing with an installation cavity provided inside, a gun nozzle mechanism installed at the front end of the housing, and a nail driving mechanism installed at the installation In the cavity, the nail driving mechanism is the nail driving mechanism as described above.
  • a pushing member is provided, and the pushing member directly cooperates with the piston to push the piston toward the power supply spring, thereby allowing the power supply spring to compress and store energy.
  • the pushing member directly cooperates with the piston to push the piston toward the power supply spring, thereby allowing the power supply spring to compress and store energy.
  • the pushing member has a pushing end facing the piston, and the pushing end contacts the pushing end on the piston during further rotation to urge the piston to move, and the pushing end has a first pushing end and a second pushing end,
  • the first stage of energy storage and the second stage of energy storage can be carried out separately to maximize the energy storage capacity of the power supply spring; at the same time, the outer diameters of the first push end and the second push end are not the same, so that the piston push end does not change the Under the condition of length, adjust the outer diameter of the pushing end as much as possible to obtain the maximum working stroke of the piston movement.
  • the larger the working stroke the greater the amount of compression of the power supply spring, so that greater energy can be obtained, and it can be more powerful and rapid. Shoot the gun nail out.
  • Figure 1 is a structural diagram of a nail gun according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of the nail gun with part of the casing removed according to the embodiment of the present invention.
  • Figure 3 is a partial structural view of the nozzle mechanism of the embodiment of the present invention.
  • Figure 4 is a structural diagram of the nail driving mechanism according to the embodiment of the present invention.
  • Figure 5 is an installation structural diagram of the nozzle mechanism according to the embodiment of the present invention.
  • Figure 6 is an exploded view of the structure of the piston and pushing member according to the embodiment of the present invention.
  • Figure 7 is one of the process diagrams of the pushing member cooperating with the piston and pushing the piston to move according to the embodiment of the present invention.
  • Figure 8 is the second process diagram of the pushing member cooperating with the piston and pushing the piston to move according to the embodiment of the present invention.
  • Figure 9 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end according to the embodiment of the present invention.
  • Figure 10 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 11 is a schematic structural diagram of the safety switch installed in the casing according to the embodiment of the present invention.
  • FIG. 12 is a partial enlarged view of position A in FIG. 11 .
  • FIG. 13 is a partial enlarged view of B in FIG. 11 .
  • Figure 14 is a schematic diagram of the installation position of the safety switch, pushing member and curved rod assembly according to the embodiment of the present invention.
  • This embodiment provides a nail driving mechanism and a nail gun, which are more convenient to operate and do not affect safety and nail shooting effect.
  • Figure 1 is a structural diagram of a nail gun according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of the nail gun with part of the casing removed according to the embodiment of the present invention.
  • the nail gun 10 of this embodiment includes a housing 20, a nozzle mechanism 30, a nail drive The driving mechanism 40 and the 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.
  • An installation cavity for installing the nail driving mechanism 40 is formed inside.
  • the casing 21 can not only accommodate internal components such as the nail driving 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 drive mechanism 40 is used to drive the striker to move in a predetermined reciprocating direction to make it The nail can be fired from the gun mouth mechanism 30 to achieve nail shooting.
  • Figure 3 is a partial structural view of the nozzle mechanism of the embodiment 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 passing channel 34 for allowing the gun nail to be ejected.
  • the firing pin driving assembly 40 is used to impact the gun nail so that it is ejected from the nail passing channel 34 .
  • Figure 4 is a structural diagram of the nail driving mechanism according to the embodiment of the present invention.
  • the nail driving mechanism 40 includes a piston 41 disposed in the housing 20 , at least one power supply spring 42 , a pushing member 43 and a driving motor that drives the pushing member 43 to rotate.
  • a slot structure is provided in the installation cavity inside the casing 21.
  • a cylinder head base 48 is fixed at the front end of the slot structure, and a fixing piece 421 is fixed at the rear end. There is a gap between the cylinder head base 48 and the fixing piece 421.
  • a pair of parallel guide rods 422 are provided.
  • 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 against the fixed piece 421.
  • the two power supply springs 42 are respectively It is sleeved on the outer periphery of two guide rods 422.
  • One end of the guide rod 422 is fixed to the fixing piece 421 through screws, and the other end passes through the piston 41 and is fixed on the cylinder head base 48.
  • the guide rod 422 is used to guide the piston 41 to reciprocate in a predetermined direction.
  • 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 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 nailing direction of the nail gun, and the second pushing end 412 extends from the piston 41 toward the pushing member 43 out.
  • 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 according to the embodiment of the present invention.
  • the cylinder head base 48 is located in front of the piston 41 along the striking direction, and has a mounting plate 481 extending forward from the lower end.
  • the nozzle bottom plate 32 and the nozzle cover plate 33 are fixed on the mounting plate 481 by bolts.
  • Above the plate 481, the front end of the firing pin 49 in the middle of the piston 41 passes through the middle of the cylinder head base 48 and is inserted into the nail passage 34 between the gun nozzle bottom plate 32 and the gun nozzle cover plate 33.
  • the left and right sides of the cylinder head base 48 are screwed through screws 482 Fixed to the shell.
  • Figure 6 is an exploded view of the structure of the piston and pushing member according to the embodiment of the present invention.
  • the piston 41 has a fixed portion 413 for fixing the striker 49 (the fixed portion 413 is generally cylindrical in shape, with a straight-shaped socket 4131 provided in the middle along the axial direction, and a fixed portion 4131 radially extending through the entire cylinder. hole 4132, one end of the striker 49 is inserted into the socket 4131, and a pin is inserted into the fixing hole 4132, thereby fixing the striker 49 on the fixing part 413).
  • a mounting part 414 is provided on the rear side of the fixing part 413 for installing the power supply spring 42. Installation The part 414 is two tapered mounting seats 4141 provided corresponding to the power supply spring. A through hole is provided in the middle of the mounting seat 4141.
  • the front ends of the two guide rods 422 pass through the corresponding through holes and are fixed on the cylinder head base 48; fixed
  • the connecting portion 413 and the mounting portion 414 are connected through a plate-shaped connecting portion 415.
  • the 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 A first pushing end 411 is formed extending toward the direction of the fixing portion 413 , 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 have a cylindrical structure.
  • the pushing member 43 also has a crank 430, which includes a first crank arm 4301 and a second crank arm 4302.
  • the first pushing end 431 is installed on the first crank arm.
  • the outer end of 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 equal in length, form an included angle between them and the outer ends of the two Both parts are arc-shaped, the outer edge of the first push end 431 protrudes from the outer end of the first crank arm 4301, and the second push end
  • the outer edge of 432 is flush or slightly concave with the outer end of the second crank arm 4302 .
  • the driving motor includes a motor 44 and a reducer 45.
  • the reducer 45 is installed at the output end of the motor 44.
  • the pushing member 43 is installed at the output end of the reducer 45, and a one-way bearing is provided between the two. Driven by the motor 44 and the reducer 45, the pushing member 43 rotates in one direction.
  • the motor 44 in this embodiment is a brushless motor.
  • the reducer 45 is installed at the output end of the motor 44 and is used to reduce the rotation speed of the output end of the motor 44, thereby obtaining higher output torque, that is, greater driving force.
  • the one-way bearing is used to limit the rotation direction of the output end of the drive motor 44 so that it can only rotate in one direction.
  • the one-way bearing is installed on the output shaft of the reducer 45, 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 bearing bears the pushing force so that the pushing force is not transmitted to the output shaft, thereby protecting the motor 44 .
  • the specific structures of the motor 44, the reducer 45 and the one-way bearing can adopt structures in the prior art. As shown in Figures 1, 2 and 4, the driving motor and pushing member 43 are almost located 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 During installation, a through hole is provided in the middle of the crank 430 at the connection between the first crank arm 4301 and the second push end 432.
  • the crank 430 is installed at the output end of the reducer 45 through the through hole, and the crank 430 can follow the motor. 44 and reducer 45 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 7 is one of the process diagrams of the pushing member cooperating with the piston and pushing the piston to move according to the embodiment of the present invention.
  • Figure 8 is the second process diagram of the pushing member cooperating with the piston and pushing the piston to move according to the embodiment of the present invention.
  • the pushing member 43 rotates clockwise under the driving of the motor 44 .
  • the second pushing end 432 moves to the second pushing end 412 and connects with the second pushing end. 412
  • the pushing member 43 continues to rotate, the second pushing end 432 makes an arc-shaped movement generally toward the direction of energy storage, and the second pushing end 412 exerts an arc-shaped pushing force generally toward the direction of energy storage to the piston 41, and the piston Under the action of this pushing force, the spring 41 can move in the energy storage direction along the guide rod 422, 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 44 drives the pushing member 43 to continue to rotate, and the first pushing end 431 rotates accordingly and separates from the first pushing end 411.
  • the first pushing end 431 and the second pushing end 432 are both located in the movement direction of the piston 41. out of the path, so 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 gun nail, prompting the gun nail to be ejected, and the nail-shooting process is completed.
  • the crank 430 will not reversely rotate under the force of the piston 41, resulting in mistaken nail firing.
  • the motor 44 is used to drive the pushing member 43 to rotate, and then pushes the piston 41 to move through the pushing member 43, causing the power supply spring 42 to be compressed and accumulate energy, and finally the piston 41 is pushed out through the elastic force of the power supply spring 42.
  • Figure 9 is a schematic diagram of the stroke analysis formed by the cooperation between the pushing member and the piston pushing end according to the embodiment of the present invention.
  • Figure 10 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 driving 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 44.
  • the motor 44 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 44 operates to drive the pushing member 43 to rotate to complete the above spring energy storage process.
  • Figure 11 is a schematic structural diagram of the safety switch installed in the casing according to the embodiment of the present invention.
  • FIG. 12 is a partial enlarged view of position A in FIG. 11 .
  • FIG. 13 is a partial enlarged view of B in FIG. 11 .
  • the toggle part 471 of the safety switch 47 has a toggle piece 4711 and a toggle rod 4712.
  • the toggle piece 4711 is located on one side of the safety switch element 472 and is linked with it.
  • the linkage mode is: safety A switch protrusion 4721 is provided on one side of the switch element 472, and a trigger end 47111 is provided on the toggle piece 4711.
  • the trigger end 47111 touches the switch protrusion 4721 the safety switch element 472 can be triggered to open and 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 located 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 end 47122 is located inside the toggle piece 4711.
  • a pin 47123 is provided at the connecting section between the first toggle end 47121 and the second toggle end 47122.
  • the rear of the housing 20 A mounting portion 2121 for the pin 47123 is protrudingly provided inside the cover plate 212 , and the toggle lever 4712 is rotatably mounted on the mounting portion 2121 through the pin 47123 .
  • Figure 14 is a schematic diagram of the installation position of the safety switch, pushing member and curved rod assembly according to the embodiment of the present invention.
  • 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 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 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.
  • the long side 522 extends to the vicinity of the toggle piece 4711. And 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 touch section 5221.
  • a crank lever return spring 5222 is provided on one side of the contact section 5221.
  • the outer curved rod 51 can cause the contact section 5221 to contact the touch plate 47114 on the toggle piece 4711, and press the toggle piece 4711 toward the safety switch element 472, so that the safety switch element 472 is turned on to generate an electrical signal, and then the user presses the pressing part 461, causing the main switch element 462 to turn on and generate an electrical signal.
  • the motor 44 is started, the power supply spring begins to store energy, and then the gun is nailed Hit it out to achieve nail shooting.
  • the curved rod return spring 5222 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 .
  • 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 nail gun When the nail gun is used, first align the nozzle mechanism on the front side with the target part to be nailed, and the outer curved rod 51 is pushed, causing the inner curved rod to move inward, prompting the safety switch element 472 to turn on and generate an electrical signal. , and then the user turns on the main switch element 462 to generate an electrical signal.
  • the control motor 44 is started and drives the pushing member 43 to rotate.
  • the piston 41 is urged to move toward the side of the power supply spring 42, thereby compressing the power supply spring 42 and gradually performing the first stage of energy storage and the second stage of energy storage. After completing the second stage of charging, you can start shooting nails.
  • the motor 44 drives the pushing member 43 to continue to rotate, and the first pushing end 431 rotates accordingly and separates from the first pushing end 411.
  • the first pushing end 431 and the second pushing end 432 are both located in the movement direction of the piston 41. out of the path, so 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 gun nail, prompting the gun nail to be ejected, and the nail-shooting process is completed.
  • 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 power supply to
  • the 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. It can not only save materials, but also reduce energy consumption and make the transmission effect better.
  • the nail driving mechanism provided according to this embodiment also has a control component.
  • the control component includes a main switch 46 and a safety switch 47.
  • the drive motor, the main switch 46, the safety switch 47, and the power supply are electrically connected. Therefore, according to the main switch 46 , the nail firing electrical signal and the safety electrical signal generated by the safety switch 47 are used to control the motor 44 of the nail gun 10.
  • the main switch 46 and the safety switch 47 are arranged in series, so only when the nail firing electrical signal and the safety electrical signal are received at the same time and Only when these two signals are valid can the motor 44 be controlled to start, so as to perform nail shooting. Since the nail driving mechanism adopts a double switch and double insurance design, the safety during the nail shooting process is also ensured.
  • the toggle part of the safety switch has a toggle piece and a toggle rod
  • the interaction between the toggle piece, the toggle rod, and the pushing member is used to turn on the safety switch and disconnect the electrical signal.
  • the nail gun 10 can hit the target position when it touches the target position.
  • the safety switch is turned on through the bent lever assembly, and when the main switch 46 is pressed, that is, when it is started, energy storage automatically starts and remains in the energy storage completion state, so the user only needs to press one switch. It realizes direct nail extraction and is very convenient to operate.

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

Abstract

一种射钉驱动机构（40）以及射钉枪（10）。包括活塞（41）、至少一根供力弹簧（42）、推动构件（43）以及驱动电机（44），其中，活塞（41）上设置有与推动端相互配合的抵推端，并具有：第一抵推端（411），从活塞（41）沿射钉枪（10）的射钉方向延伸出，第二抵推端（412），从活塞（41）朝向推动构件（43）延伸出，推动端具有：第一推动端（431），与第一抵推端（411）相互配合，第二推动端（432），与第二抵推端（412）相互配合，其外径小于第一推动端（431）的外径。由于设置有推动构件（43），且该推动构件（43）是直接与活塞（41）进行配合，用于推动活塞（41）朝向供力弹簧（42）运动，从而让供力弹簧（42）进行压缩蓄能，而推动构件（43）与撞针（49）之间无直接接触，避免了因与撞针（49）之间的接触而影响到活塞（41）的移动，使得整个蓄能过程更加顺畅且稳定。

Description

射钉驱动机构以及射钉枪 技术领域
本发明属于紧固工具技术领域，具体涉及一种射钉驱动机构以及射钉枪。
背景技术
射钉枪是一种紧固工具，多用于建筑施工，目前，应用广泛的一种射钉枪为采用锂电池的电动射钉枪，这种射钉枪通过锂电池供电，驱动电机以及相应的驱动结构来推动活塞，进而活塞压缩供力弹簧进行蓄能，射钉时，依靠供力弹簧的弹力来驱动活塞运动，进而带动安装在活塞上的撞针将射钉撞击射出。具体可参考申请人的在先专利CN215395034U。
然而，在上述专利技术中，依旧存在一些不足之处，例如：驱动结构采用齿轮与带有齿槽的撞针配合的方式来促使供力弹簧蓄能，齿条与齿槽的配合方式在长时间的使用过程中容易出现磨损、卡齿等现象，导致传动不顺畅甚至射钉枪直接卡死，无法实现射钉的情况。
发明内容
为解决上述问题，提供一种结构紧凑，弹簧蓄能直接依靠驱动活塞进行移动，蓄能过程更加顺畅，更便于操作的射钉驱动机构以及使用此种驱动机构的射钉枪，本发明采用了如下技术方案：
一种射钉驱动机构，设置在具有壳体的射钉枪内，用于驱动射钉枪的枪钉击打而出，具有这样的特征，包括：活塞，移动设置在壳体内，并安装有撞针；至少一根供力弹簧，其一端与活塞抵接，用于为活塞的运动提供动力；推动构件，具有朝向活塞的推动端，用于推动活塞朝向供力弹簧运动，从而让供力弹簧进行压缩蓄能；以及驱动电机，用于带动推动构件转动；其中，活塞上设置有与推动端相互配合的抵推端，该抵推端具有：第一抵推端，从活塞沿射钉枪的射钉方向延伸出，第二抵推端，从活塞朝向推动构件延伸出，推动端具有：第一推动端，用于与第一抵推端相互配合，第二推动端，用于与第二抵推端相互配合，其外径小于第一推动端的外径。
在本发明提出的射钉驱动机构中，还具有这样的特征，其中，推动构件还具 有曲柄，该曲柄含有：第一曲柄臂，用于安装第一推动端，第二曲柄臂，用于安装第二推动端，并与第一曲柄臂等长，第一曲柄臂与第二曲柄臂之间形成有夹角。
在本发明提出的射钉驱动机构中，还具有这样的特征，其中，第一推动端与第二推动端均呈圆柱形，分别设置在第一曲柄臂与第二曲柄臂的外端部，第一曲柄臂与第二曲柄臂的外端部呈圆弧形，第一推动端的外沿凸出第一曲柄臂的外端部。
在本发明提出的射钉驱动机构中，还具有这样的特征，还包括控制组件，该控制组件具有：主开关，具有按压部以及主开关元件，该主开关元件在该按压部按下时产生电信号；安全开关，具有拨动部以及安全开关元件，该安全开关元件在与该拨动部接触时产生电信号；其中，主开关元件与安全开关元件串联，当主开关元件与安全开关元件均产生电信号时，驱动电机运行，推动构件在驱动电机的带动下转动时，第一推动端与第一抵推端相抵接并推动第一抵推端，使得活塞朝向所述供力弹簧运动，从而使供力弹簧进行第一段蓄能，完成第一段蓄能后，第二推动端与第二抵推端相抵接并推动所述第二抵推端，使得活塞朝向所述供力弹簧运动，从而使供力弹簧进行第二段蓄能。
在本发明提出的射钉驱动机构中，还具有这样的特征，其中，拨动部具有：拨动片，用于与安全开关元件联动，拨动杆，一端用于与拨动片联动，另一端用于与推动端联动，拨动片含有用于与安全开关元件接触的触发端以及用于与安全开关元件断开的开口槽，拨动片的一侧设置有拨动杆，另一侧设置有用于促使拨动片复位的拨动复位弹簧。
在本发明提出的射钉驱动机构中，还具有这样的特征，其中，拨动杆含有：第一拨动端，靠近推动端设置，并设有用于与推动端接触的导向斜面；第二拨动端，靠近拨动片设置；以及连接段，用于连接第一拨动端与第二拨动端，并通过销轴转动设置在壳体内；当推动端在转动过程中剐蹭到第一拨动端时，第二拨动端与拨动片触碰并推动拨动片进行移动。
在本发明提出的射钉驱动机构中，还具有这样的特征，还包括曲杆组件，用于推动拨动片与安全开关元件联动，并具有：外曲杆，外端延伸至射钉枪的枪嘴机构外，内端插入射钉枪的壳体内，内曲杆，外端与外曲杆相联动，内端与拨动片相联动，内曲杆靠近拨动片的一端设置有曲杆复位弹簧。
在本发明提出的射钉驱动机构中，还具有这样的特征，其中，内曲杆的内端设置有碰触段，拨动片还含有用于与碰触段相配合的碰触板，开口槽位于碰触板与触发端之间。
本发明还提出了一种电动射钉枪，具有这样的特征，至少包括：壳体，其内部设置有安装腔，枪嘴机构，安装于壳体的前端，以及射钉驱动机构，安装于安装腔内，其中，射钉驱动机构为如上所述的射钉驱动机构。
发明作用与效果
根据本发明的射钉驱动机构以及射钉枪，由于设置有推动构件，且该推动构件是直接与活塞进行配合，用于推动活塞朝向供力弹簧运动，从而让供力弹簧进行压缩蓄能，而推动构件与撞针之间无直接接触，避免了因与撞针之间的接触而影响到活塞的移动，使得整个蓄能过程更加顺畅且稳定。另外，推动构件具有朝向活塞的推动端，采用该推动端再转动过程中与活塞上的抵推端接触的方式来促使活塞进行移动，且该推动端具有第一推动端和第二推动端，能够分别进行第一段蓄能及第二段蓄能，促使供力弹簧蓄能能力实现最大化；同时，第一推动端和第二推动端的外径不等，使得在不改变活塞抵推端的长度情况下调整推动端的外径大小尽可能的获得活塞移动的最大工作行程，工作行程越大，则供力弹簧被压缩的量就越大，从而能够获得更大的能量，能够更加有力、迅速地将枪钉射出。
附图说明
图1是本发明实施例的射钉枪的结构图。
图2是本发明实施例的射钉枪去除部分机壳后的结构图。
图3是本发明实施例的枪嘴机构的部分结构图。
图4是本发明实施例的射钉驱动机构的结构图。
图5是本发明实施例的枪嘴机构安装结构图。
图6是本发明实施例的活塞与推动构件的结构爆炸图。
图7是本发明实施例的推动构件与活塞进行配合并推动活塞移动的过程图之一。
图8是本发明实施例的推动构件与活塞进行配合并推动活塞移动的过程图之二。
图9是本发明实施例的推动构件与活塞抵推端相互配合形成的行程分析示意图。
图10是对照组推动构件与活塞抵推端相互配合形成的行程分析示意图。
图11是本发明实施例的安全开关安装在机壳内的结构示意图。
图12是图11的A处局部放大图。
图13是图11的B处局部放大图。
图14是本发明实施例的安全开关、推动构件及曲杆组件的安装位置示意图。
附图标记：射钉枪10、壳体20、机壳21、前盖板211、后盖板212、安装部位2121、手柄213、底托214、安装槽2141、枪嘴机构30、弹夹31、枪嘴底板32、枪嘴盖板33、过钉通道34、射钉驱动机构40、活塞41、第一抵推端411、第二抵推端412、固定部413、插口4131、固定孔4132、安装部414、安装座4141、连接部415、供力弹簧42、固定片421、导向杆422、推动构件43、曲柄430、第一曲柄臂4301、第二曲柄臂4302、第一推动端431、第二推动端432、电机44、减速机45、主开关46、按压部461、主开关元件462、安全开关47、拨动部471、拨动片4711、触发端47111、开口槽47112、拨动复位弹簧47113、拨动杆4712、第一拨动端47121、导向面471211、第二拨动端47122、销轴47123、安全开关元件472、开关凸起4721、缸头座48、安装板481、螺钉482、撞针49、曲杆组件50、外曲杆51、内曲杆52、短边521、长边522、碰触段5221、复位弹簧5222、压板53、保护盖54、锂电池60。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，以下结合实施例及附图对本发明的射钉驱动机构以及射钉枪作具体阐述。
<实施例>
本实施例提供一种射钉驱动机构以及射钉枪，更便于操作且不影响安全性以及射钉效果。
图1是本发明实施例的射钉枪的结构图。
图2是本发明实施例的射钉枪去除部分机壳后的结构图。
如图1-图2所示，本实施例的射钉枪10包括壳体20、枪嘴机构30、射钉驱 动机构40以及供电单元(锂电池60)。壳体20为一设置在外侧的机壳21，机壳21由两块前后设置的前盖板211和后盖板212相互扣合形成，内部形成用于安装射钉驱动机构40的安装腔，机壳21不仅能够容置射钉驱动机构40等内部部件，还能对这些内部部件起到保护作用。主体机壳21包含一个让使用者握持的手柄213以及和手柄213连接的底托214，手柄213以及底托214均为中空结构，底托214上开设有一个安装槽2141，锂电池60可拆卸安装在该安装槽2141上。供电单元用于为整个射钉枪进行供电；枪嘴机构30用于存放枪钉，并让枪钉击打而出；射钉驱动机构40用于驱动撞针沿预定的往复运动方向运动，使其能够将枪钉从枪嘴机构30上击发而出实现射钉。
图3是本发明实施例的枪嘴机构的部分结构图。
如图2-图3所示，枪嘴机构30设置在机壳21的前端，枪嘴机构30具有用于存放枪钉的弹夹31、安装在弹夹31顶部的枪嘴底板32及枪嘴盖板33，枪嘴底板32与枪嘴盖板33之间设有让枪钉射出的过钉通道34，撞针驱动组件40用于撞击枪钉使其从过钉通道34处射出。
图4是本发明实施例的射钉驱动机构的结构图。
如图4所示，射钉驱动机构40包括移动设置在壳体20内的活塞41、至少一根供力弹簧42、推动构件43以及带动推动构件43进行转动的驱动电机。
如图2所示，机壳21内部的安装腔内设置有卡槽结构，该卡槽结构前端固定有缸头座48，后端固定有固定片421，缸头座48与固定片421之间设置有一对平行的导向杆422。如图4所示，本实施例中设置有两根并排的供力弹簧42，供力弹簧42的前端与活塞41相抵接，后端抵设在固定片421上且两根供力弹簧42分别套设在两个导向杆422外周，导向杆422的一端通过螺丝与固定片421相固定，另一端穿过活塞41固定在缸头座48上。导向杆422用于导向活塞41沿预定的方向进行往复运动。
活塞41的前端安装有用于撞击枪钉使其发射的撞针49，活塞41的后端与供力弹簧42相互配合，在供力弹簧42的驱动下可以带动活塞41进行移动(即供力弹簧42用于为活塞41的运动提供动力)。推动构件43具有朝向活塞41的推动端，用于推动活塞41朝向供力弹簧42所在端运动，从而让供力弹簧42进行压缩蓄能。与之对应的，活塞41上设置有与推动端相互配合的抵推端，抵推 端具有第一抵推端411和第二抵推端412，第一抵推端411从活塞41沿射钉枪的射钉方向延伸出，第二抵推端412从活塞41朝向推动构件43延伸出。推动端具有与第一抵推端411相互配合的第一推动端431以及与第二抵推端412相互配合的第二推动端432，第一推动端431及第二推动端432均为圆柱形结构，推动构件43在转动过程中，可带动第一推动端431及第二推动端432进行转动，且第二推动端432的外径小于第一推动端431的外径，第二推动端432的高度也低于第一推动端431的高度。
图5是本发明实施例的枪嘴机构安装结构图。
如图5所示，缸头座48位于活塞41沿着击打方向的前方，并且靠下端部向前延伸形成有安装板481，枪嘴底板32及枪嘴盖板33通过螺栓固定在该安装板481上方，活塞41中部的撞针49前端穿过缸头座48的中部穿插在枪嘴底板32及枪嘴盖板33之间的过钉通道34内，缸头座48左右两侧通过螺钉482与壳体相固定。
图6是本发明实施例的活塞与推动构件的结构爆炸图。
如图6所示，活塞41具有固定部413，用于固定撞针49(固定部413整体呈类似圆柱状，中部沿其轴向开设有一字型插口4131，并沿径向贯穿整个圆柱开设有固定孔4132，撞针49一端插入插口4131内，并用插销插入固定孔4132，从而将撞针49固定在固定部413上)，固定部413的后侧设置有用于安装供力弹簧42的安装部414，安装部414为对应供力弹簧设置的两个呈锥形的安装座4141，安装座4141中部设置有贯通孔，两根导向杆422的前端穿过对应的贯通孔固定在缸头座48上；固定部413与安装部414之间通过一块板状的连接部415相连，连接部415的下端向下(推动构件43所在方向)延伸形成第二抵推端412，第二抵推端412的一侧朝向固定部413所在方向延伸形成第一抵推端411，且第二抵推端412与第一抵推端411大致垂直。
第一推动端431与第二推动端432呈圆柱形结构，推动构件43还具有曲柄430，该曲柄含有第一曲柄臂4301和第二曲柄臂4302，第一推动端431安装在第一曲柄臂4301的外端部，第二推动端432安装在第二曲柄臂4302的外端部，第一曲柄臂4301和第二曲柄臂4302等长，两者之间形成夹角且两者的外端部均呈圆弧形，第一推动端431的外沿凸出第一曲柄臂4301的外端部，第二推动端 432的外沿与第二曲柄臂4302的外端部齐平或者略微内凹设置。
如图4所示，驱动电机包括电机44和减速机45，减速机45安装在电机44的输出端，推动构件43安装在减速机45的输出端，且两者之间设置有单向轴承，在电机44和减速机45的带动下，推动构件43进行单向转动。本实施例的电机44为无刷电机。减速机45安装在电机44的输出端，用于降低电机44输出端的转速，从而获得更高的输出扭矩，也即得到更大的驱动力。单向轴承用于限制驱动电机44的输出端的转动方向，使其仅能进行单向转动。单向轴承安装在减速机45的输出轴上，并与输出轴形成孔轴配合，从而使输出轴只能进行单向转动。同时，当推动构件43受使其反向转动的推动力时，单向轴承承受该推动力，使得该推动力不传导到输出轴上，从而对电机44起到保护作用。电机44、减速机45以及单向轴承的具体结构可采用现有技术中的结构。且如图1、图2及图4所示，驱动电机、推动构件43均几乎位于活塞41的正下方，使得整个结构更加紧凑，重力均集中于整个射钉枪的中部，相比将电机及驱动部件设置在侧面更加稳定且受力更加均匀，也不占多余空间。
安装时，曲柄430的中部，位于第一曲柄臂4301与第二推动端432之间相连处开设有通孔，通过该通孔将曲柄430安装在减速机45的输出端，曲柄430可跟随电机44和减速机45进行转动。将推动构件43设计成曲柄430的形状，相比现有技术中的圆盘等结构要更加轻便，不仅能够节省材料，还能够减少能耗，使传动效果更好。
推动构件43在转动时，其上的第一推动端431和第二推动端432会跟随曲柄430进行弧形运动，并分别与活塞41上的第一抵推端411和第二抵推端412相互配合将活塞41朝向蓄能方向推动。第一推动端431的形状、高度与第一抵推端411的设置相对应，第二推动端432的形状、高度与第二抵推端412的设置相对应。
图7是本发明实施例的推动构件与活塞进行配合并推动活塞移动的过程图之一。
图8是本发明实施例的推动构件与活塞进行配合并推动活塞移动的过程图之二。
如图7所示，推动构件43在电机44的驱动下进行顺时针转动，随着推动构件43的转动，第二推动端432移动至第二抵推端412处，并与第二抵推端412 相抵接，此时推动构件43继续转动，第二推动端432作大致朝向蓄能方向的弧形运动，通过第二抵推端412给活塞41施加大致朝向蓄能方向的弧形推动力，活塞41在该推动力的作用下能够沿着导向杆422朝向蓄能方向运动，并对供力弹簧42进行压缩使其进行蓄能。
第二推动端432沿蓄能方向转动至最大行程时即完成第一段蓄能。此时推动构件43继续转动，第二推动端432随之转动并脱离第二抵推端412，同时，第一推动端431转动至第一抵推端411处并与第一抵推端411相抵接，随后，第一推动端431以相同方式推动活塞41进一步朝向蓄能方向运动，直至第一推动端431沿蓄能方向转动至最大行程，完成第二段蓄能，从而完成整个弹簧蓄能过程。
完成第二段蓄能后，就可以进行射钉。在射钉时，电机44驱动推动构件43继续转动，第一推动端431随之转动并脱离第一抵推端411，此时第一推动端431以及第二推动端432都位于活塞41的运动路径以外，因此活塞41在供力弹簧42的弹力的作用下能够朝向射钉方向运动，直至撞针49撞击到枪钉促使枪钉射出，完成射钉过程。在进行上述的第一段蓄能或第二段蓄能时，由于单向轴承的设置，曲柄430不会在活塞41的作用力下产生反向旋转，而导致误射钉。
电机44用于驱动推动构件43进行转动，进而通过推动构件43推动活塞41运动，促使供力弹簧42被压缩蓄能，最后通过供力弹簧42的弹力作用将活塞41推出。
图9是本发明实施例的推动构件与活塞抵推端相互配合形成的行程分析示意图。
图10是对照组推动构件与活塞抵推端相互配合形成的行程分析示意图。
本实施例的第一推动端431和第二推动端432均呈圆柱形，且将第二推动端432的外径设置成小于第一推动端431的外径，两者的外径不相等，此种设计方式相比将外径设计成相等的方式能够扩大活塞的行程。发明人对此进行了参照实验如下：
如图9所示，在本实施例中，第一推动端431的外径为18mm(半径为9mm)，第二推动端432的外径为14mm(半径为7mm)，活塞的第一抵推端411到第二抵推端412之间的距离为35mm，实验所能够达到的工作行程为81.5mm。
如图10所示，作为本实施例的对照组，第一推动端431与第二推动端432的外径均为14mm(半径为7mm)，活塞的第一抵推端411到第二抵推端412之 间的距离为35mm，实验所能够达到的工作行程为79.5mm，明显小于本实施例所能够达到的行程。
上述工作形成的运算方式为：
工作行程为S，活塞的第一抵推端和第二抵推端之间的距离为L，第一推动端431和第二推动端432的夹角为n(即为于第一曲柄臂4301与第二推动端432之间的夹角)，第一推动端431和第二推动端432旋转时所绕过的弧长计算公式为：l＝nπR/180°；第一推动端431与第二推动端432等径时(半径均为R)，活塞工作行程为S＝L+l＝L+(nπR/180°)；第一推动端431与第二推动端432不等径(半径分别为R1和R2)时S＝L+l+(R1-R2)。很明显，在不等径时，活塞的工作行程相比等径时要多出(R1-R2)的距离。也就是说，在不改变活塞抵推端的长度情况下调整推动端的外径大小尽可能的获得最大工作行程，工作行程越大，则供力弹簧42被压缩的量就越大，从而能够获得更大的能量，能够更加有力、迅速地将枪钉射出。同时，由于钉枪结构需要紧凑，尽量减少钉枪的设计长度，这样也有利于操作和包装运输。
如图2所示，射钉驱动机构40还包括控制组件，控制组件包含主开关46和安全开关47，主开关46与安全开关47串联并连接至锂电池60及电机44，当主开关46与安全开关47同时具有电信号时，可控制电机44启动运行。
主开关46为按钮型开关，具体结构可采用现有技术中的结构，具有按压部461和主开关元件462，主开关元件462在该按压部461按下时能够产生相应的启动电信号；安全开关47为联动型开关，具有拨动部471以及安全开关元件472，安全开关元件472在与该拨动部471接触时能够产生电信号。在本实施例中，主开关元件462与安全开关元件472均选用微动开关。当主开关元件462与安全开关元件472均产生电信号时，电机44运行，使其带动推动构件43进行转动完成上述弹簧蓄能过程。
图11是本发明实施例的安全开关安装在机壳内的结构示意图。
图12是图11的A处局部放大图。
图13是图11的B处局部放大图。
如图11所示，安全开关47的拨动部471具有拨动片4711和拨动杆4712，拨动片4711位于安全开关元件472一侧，并与其产生联动。联动方式为：安全 开关元件472的一侧设置有开关凸起4721，拨动片4711上设置有触发端47111，当触发端47111与开关凸起4721碰触时，即可触发安全开关元件472开启产生电信号。触发端47111的旁侧设置有一开口槽47112，当拨动片4711产生移动，触发端47111离开开关凸起4721，且开关凸起4721对准开口槽47112时，安全开关元件472断开。
拨动杆4712呈一端弯折的长杆形状，其用于控制拨动片4711的移动。具体如下：拨动杆4712含有第一拨动端47121和第二拨动端47122，第一拨动端47121的端部靠近推动构件43的推动端设置，并且在推动端转动过程中会产生碰撞(剐蹭)；第二拨动端47122的端部位于拨动片4711的内侧，第一拨动端47121和第二拨动端47122相连的连接段处设置有一销轴47123，壳体20的后盖板212内部凸出设置有供销轴47123安装的安装部位2121，拨动杆4712通过该销轴47123可转动地安装在安装部位2121上。
图14是本发明实施例的安全开关、推动构件及曲杆组件的安装位置示意图。
如图14所示，当推动构件43的推动端在顺时针转动时，一旦剐蹭到第一拨动端47121，会促使第一拨动端47121向内转动，使得第二拨动端47122向外拨动，碰到拨动片4711，让拨动片4711朝向外侧移动，从而让触发端47111离开开关凸起4721，将安全开关元件472断开。拨动片4711的外侧与壳体之间设置有拨动复位弹簧47113，当推动端与第一拨动端47121之间无接触时，拨动复位弹簧47113又将拨动片4711向内推进复位，第一拨动端47121与第二拨动端47122也相继复位。第一拨动端47121的外侧设置有倾斜的导向面471211，便于推动端在转动时与第一拨动端47121产生碰撞。
射钉驱动机构40还包括曲杆组件50，曲杆组件50用于推动拨动片4711与安全开关元件472进行联动。曲杆组件50具有外曲杆51和内曲杆52，如图1和图2所示，外曲杆51的外端延伸出机壳20通过一压板53安装在枪嘴机构的枪嘴盖板33上，且外端端部凸出枪嘴机构，外曲杆51的内端插入机壳20内部与内曲杆52相联动。如图14所示，内曲杆52具有相互垂直设置的短边521和长边522，短边521的外侧与外曲杆51的内端相接触，长边522延伸至拨动片4711附近，并在端部朝向拨动片4711弯折形成碰触段5221。拨动片4711上靠近碰触段5221的位置设置有碰触板47114，开口槽47112位于碰触板47114与 触发端47111之间，碰触段5221的一侧设置有曲杆复位弹簧5222。
曲杆组件与安全开关元件472的联动具体如下：
射钉枪在使用时，先将位于前侧的枪嘴机构对准需要打钉的目标部位，由于外曲杆51的外端端部凸出枪嘴机构，在外端端部顶到目标部位时，会对外曲杆51产生反作用力，使得外曲杆51朝向射钉枪一侧移动，外曲杆51的内端会碰触到内曲杆52的短边521，从而推动内曲杆52向内移动，外曲杆51在移动过程中能够促使碰触段5221与拨动片4711上的碰触板47114相接触，并且将拨动片4711朝向安全开关元件472一侧按压，使得安全开关元件472开启产生电信号，然后用户按压按压部461，促发主开关元件462开启产生电信号，当两个开关元件均处于开启状态时，电机44启动，供力弹簧开始蓄能，而后将枪钉击打而出，实现射钉。射钉完成后，外曲杆51的外端与目标部分分离时，曲杆复位弹簧5222会带动内曲杆52及外曲杆51进行复位。
如图14所示，外曲杆51的外端部还设置有保护盖54，通过保护盖54与目标部位相接触，可以减少外曲杆51外端的磨损，延长外曲杆的使用寿命。
本实施例的工作原理：
射钉枪在进行使用时，先将位于前侧的枪嘴机构对准需要打钉的目标部位，外曲杆51被推动，导致内曲杆向内移动，促使安全开关元件472开启产生电信号，然后用户开启主开关元件462产生电信号，此时，由于主开关与安全开关均产生电信号，从而使得控制电机44启动，带动推动构件43进行转动。推动构件43在进行转动过程中，促使活塞41朝向供力弹簧42一侧移动，从而压缩供力弹簧42，逐步进行第一段蓄能及第二段蓄能。在完成第二段蓄能后，就可以进行射钉。在射钉时，电机44驱动推动构件43继续转动，第一推动端431随之转动并脱离第一抵推端411，此时第一推动端431以及第二推动端432都位于活塞41的运动路径以外，因此活塞41在供力弹簧42的弹力的作用下能够朝向射钉方向运动，直至撞针49撞击到枪钉促使枪钉射出，完成射钉过程。与此同时，由于第一推动端431的外沿凸出第一曲柄臂4311的外端部设置，使得其在转动过程中会剐蹭到第一拨动端47121，促使第一拨动端47121向内转动，使得第二拨动端47122向外拨动，碰到拨动片4711，让拨动片4711朝向外侧移动，从而让触发端47111离开开关凸起4721，且此时开关凸起4721正好对准开口槽47112, 安全开关元件472断开，使得电机停止转动。
实施例作用与效果
根据本实施例的射钉驱动机构以及射钉枪，由于设置有推动构件43，且该推动构件43是直接与活塞41进行配合，用于推动活塞41朝向供力弹簧42运动，从而让供力弹簧42进行压缩蓄能，而推动构件43与撞针49之间无直接接触，避免了因与撞针49之间的接触而影响到活塞41的移动，使得整个蓄能过程更加顺畅且稳定。
另外，推动构件43具有朝向活塞41的推动端，采用该推动端再转动过程中与活塞41上的抵推端接触的方式来促使活塞进行移动，且该推动端具有第一推动端431和第二推动端432，能够分别进行第一段蓄能及第二段蓄能，促使供力弹簧42蓄能能力实现最大化；同时，第一推动端431和第二推动端432的外径不等，使得在不改变活塞41抵推端的长度情况下调整推动端的外径大小尽可能的获得活塞41移动的最大工作行程，工作行程越大，则供力弹簧42被压缩的量就越大，从而能够获得更大的能量，能够更加有力、迅速地将枪钉射出。
本实施例将推动构件43设计成曲柄430的形状，相比现有技术中的圆盘等结构要更加轻便，不仅能够节省材料，还能够减少能耗，使传动效果更好。
根据本实施例提供的射钉驱动机构，还具有控制组件，该控制组件包括主开关46和安全开关47，驱动电机、主开关46、安全开关47、电源四者电连接，因此根据主开关46、安全开关47所产生的射钉电信号、安全电信号来控制射钉枪10的电机44，主开关46与安全开关47串联设置，因此只有在同时接收到射钉电信号、安全电信号且这两个信号均有效时方可控制电机44启动，从而进行射钉。由于射钉驱动机构为采用双开关、双保险的设计，因此也保证了射钉过程中的安全性。
进一步，由于安全开关的拨动部具有拨动片和拨动杆，采用拨动片、拨动杆、及推动构件之间的相互联动的方式来起到将安全开关开启断开电信号的作用，属于机械结构控制方式，而无需另外设置控制器，从而节省了成本，操控也能更加的稳定。
进一步，通过本实施例的射钉驱动机构，射钉枪10能够在其碰触到目标位 置，通过曲杆组件来开启安全开关，并且在将主开关46按下时，也即启动时就自动开始进行蓄能，并保持在蓄能完成状态，因此使用者仅需按压一个开关即可实现直接出钉，操作十分方便。
上述实施例仅用于举例说明本发明的具体实施方式，而本发明不限于上述实施例的描述范围。

Claims (9)

  1. 一种射钉驱动机构，设置在具有壳体的射钉枪内，用于驱动所述射钉枪的枪钉击打而出，其特征在于，包括：
    活塞，移动设置在所述壳体内，并安装有用于撞击所述枪钉使其击打而出的撞针；
    至少一根供力弹簧，其一端与所述活塞抵接；
    推动构件，具有朝向所述活塞的推动端，用于推动所述活塞朝向所述供力弹簧运动，从而让所述供力弹簧进行压缩蓄能；以及
    驱动电机，用于带动所述推动构件转动；
    其中，所述活塞上设置有与所述推动端相互配合的抵推端，该抵推端具有：
    第一抵推端，从所述活塞沿所述射钉枪的射钉方向延伸出，
    第二抵推端，从所述活塞朝向所述推动构件延伸出，
    所述推动端具有：
    第一推动端，用于与所述第一抵推端相互配合，
    第二推动端，用于与所述第二抵推端相互配合，其外径小于所述第一推动端的外径。
  2. 根据权利要求1所述的射钉驱动机构，其特征在于，
    其中，所述推动构件还具有曲柄，该曲柄含有：
    第一曲柄臂，用于安装所述第一推动端，
    第二曲柄臂，用于安装所述第二推动端，并与所述第一曲柄臂等长，
    所述第一曲柄臂与所述第二曲柄臂之间形成有夹角。
  3. 根据权利要求2所述的射钉驱动机构，其特征在于，
    其中，所述第一推动端与所述第二推动端均呈圆柱形，分别设置在所述第一曲柄臂与所述第二曲柄臂的外端部，
    所述第一曲柄臂与所述第二曲柄臂的外端部呈圆弧形，所述第一推动端的外沿凸出所述第一曲柄臂的外端部。
  4. 根据权利要求1-3任一项所述的射钉驱动机构，其特征在于，还包括控制 组件，该控制组件具有：
    主开关，具有按压部以及主开关元件，该主开关元件在该按压部按下时产生电信号，
    安全开关，具有拨动部以及安全开关元件，该安全开关元件在与该拨动部接触时产生电信号，
    其中，所述主开关元件与所述安全开关元件串联，当所述主开关元件与所述安全开关元件均产生电信号时，驱动电机运行，
    所述推动构件在驱动电机的带动下转动时，所述第一推动端与所述第一抵推端相抵接并推动所述第一抵推端，使得所述活塞朝向所述供力弹簧运动，从而使所述供力弹簧进行第一段蓄能，
    完成所述第一段蓄能后，所述第二推动端与所述第二抵推端相抵接并推动所述第二抵推端，使得所述活塞朝向所述供力弹簧运动，从而使所述供力弹簧进行第二段蓄能。
  5. 根据权利要求4所述的射钉驱动机构，其特征在于，
    其中，所述拨动部具有：
    拨动片，用于与所述安全开关元件联动，
    拨动杆，一端用于与所述拨动片联动，另一端用于与所述推动端联动，
    所述拨动片含有用于与所述安全开关元件接触的触发端以及用于与所述安全开关元件断开的开口槽，
    所述拨动片的一侧设置有所述拨动杆，另一侧设置有用于促使所述拨动片复位的拨动复位弹簧。
  6. 根据权利要求5所述的射钉驱动机构，其特征在于，
    其中，所述拨动杆含有：
    第一拨动端，靠近所述推动端设置，并设有用于与所述推动端接触的导向斜面；
    第二拨动端，靠近所述拨动片设置；以及
    连接段，用于连接所述第一拨动端与所述第二拨动端，并通过销轴转动设置 在所述壳体内；
    当所述推动端在转动过程中剐蹭到第一拨动端时，所述第二拨动端与所述拨动片触碰并推动所述拨动片进行移动。
  7. 根据权利要求5所述的射钉驱动机构，其特征在于，还包括
    曲杆组件，用于推动拨动片与所述安全开关元件联动，并具有：
    外曲杆，外端延伸至所述射钉枪的枪嘴组件外，内端插入所述射钉枪的壳体内，
    内曲杆，外端与所述外曲杆相联动，内端与所述拨动片相联动，
    所述内曲杆靠近所述拨动片的一端设置有曲杆复位弹簧。
  8. 根据权利要求7所述的射钉驱动机构，其特征在于，
    其中，所述内曲杆的内端设置有碰触段，所述拨动片还含有用于与所述碰触段相配合的碰触板，所述开口槽位于所述碰触板与所述触发端之间。
  9. 一种射钉枪，其特征在于，至少包括：
    壳体，其内部设置有安装腔，
    枪嘴机构，安装于所述壳体的前端，以及
    射钉驱动机构，安装于所述安装腔内，
    其中，所述射钉驱动机构为如权利要求1-8任意一项所述的射钉驱动机构。
PCT/CN2023/079385 2022-09-15 2023-03-02 射钉驱动机构以及射钉枪 WO2024055535A1 (zh)

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