WO2023093035A1 - 撞针驱动机构以及射钉枪 - Google Patents

撞针驱动机构以及射钉枪 Download PDF

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Publication number
WO2023093035A1
WO2023093035A1 PCT/CN2022/101890 CN2022101890W WO2023093035A1 WO 2023093035 A1 WO2023093035 A1 WO 2023093035A1 CN 2022101890 W CN2022101890 W CN 2022101890W WO 2023093035 A1 WO2023093035 A1 WO 2023093035A1
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WO
WIPO (PCT)
Prior art keywords
piston
striker
pushing
driving mechanism
guide rod
Prior art date
Application number
PCT/CN2022/101890
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English (en)
French (fr)
Inventor
应勤灵
杨明军
蔡尚世
江炳臻
杨涛
李海军
Original Assignee
台州市大江实业有限公司
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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 WO2023093035A1 publication Critical patent/WO2023093035A1/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, in particular to a firing pin driving mechanism and a nail gun.
  • the nail gun is a fastening tool, which is mostly used in construction.
  • the widely used nail gun is the electric nail gun with lithium battery.
  • This nail gun is driven by the drive motor and the corresponding transmission structure.
  • the piston, and then the piston compresses the power supply spring to store energy.
  • the piston does work instantaneously under the action of the spring force.
  • the weight of the piston directly affects the size of the nailing force and the rebound force.
  • the heavier the weight of the piston the smaller the nailing force and the greater the rebound force.
  • the piston is mostly made of iron, so the weight is relatively heavy, which greatly affects the nailing force.
  • two methods are mainly used at present.
  • the corresponding anti-shock device is added in the nail gun to reduce the rebound force of the piston to increase the nailing force, but the addition of the anti-shock device makes the structure of the nail gun more complicated and requires higher precision for each part, so it increases
  • the cost and manufacturing difficulty of the product also increase the difficulty of self-service by users.
  • the present invention adopts the following technical solutions:
  • the invention provides a striker driving mechanism, which is characterized in that it comprises a regulation frame; providing power for the movement of the piston; and a pushing member, having a pushing end facing the piston, for pushing the piston to move toward the power supply spring, so that the power supply spring can perform compression and energy storage, wherein the striker is mounted on the piston, and the piston includes a piston A main body, constructed of a lightweight material; and a piston guard, mated to the push end, mounted on the piston body and facing the push member, the piston guard formed of a wear resistant material.
  • the striker driving mechanism provided by the present invention can also have such technical features, wherein the piston body is an aluminum component with a thrusting portion extending toward the pushing component, and the piston protector is an iron component covering the thrusting portion .
  • the striker driving mechanism provided by the present invention can also have such technical features, wherein the piston body is an aluminum component with a thrusting portion extending toward the pushing component, and the piston protector is an iron component covering the thrusting portion .
  • the firing pin drive mechanism provided by the present invention can also have such technical features, wherein the piston protector is an iron component, the piston main body is made of plastic, and is cast on the piston protector by iron-plastic composite method to form an integral part.
  • the striker driving mechanism provided by the present invention can also have such technical features, wherein the piston main body is an aluminum component with a thrust portion extending toward the push component, and the piston protector is a titanium coating, which is coated on the thrust department.
  • the striker driving mechanism provided by the present invention can also have such technical features, further comprising a guide rod installed in the regulation frame and extending along the length direction of the regulation frame; The two sides of the piston are in contact with the regulation frame respectively, wherein the power supply spring is sleeved on the guide rod, the middle part of the piston has a sleeve through hole, and the piston is movably sleeved on the guide rod through the sleeve through hole.
  • the firing pin drive mechanism provided by the present invention can also have such technical features, wherein the piston is also provided with a plurality of exhaust through-holes, which are distributed around the sleeve through-holes, and the extending direction of the exhaust through-holes is in line with that of the guide rod. same length direction.
  • the striker driving mechanism provided by the present invention can also have such technical features, wherein the regulating frame has two regulating plates, both of which extend along the length direction of the regulating frame, and two rolling element inserts are arranged on both sides of the piston body. A pair of rolling elements are respectively rotatably fitted in the two rolling element slots and respectively abut against the regulation plates on the corresponding sides.
  • the striker driving mechanism provided by the present invention may also have such technical features, wherein the guide rod is a circular rod, and the sleeve through hole is a circular through hole matching the guide rod.
  • the striker driving mechanism provided by the present invention may also have such technical features, wherein the guide rod is a square rod, and the sleeve through hole is a square through hole matching the guide rod.
  • the striker driving mechanism provided by the present invention may also have such a technical feature, wherein the number of piston protectors is two, and the two piston protectors are installed on the piston to form a first thrust end and a second thrust end,
  • the first resisting end extends from the piston along the nail firing direction
  • the second resisting end extends from the piston perpendicular to the first resisting end and toward the pushing member.
  • the first push protrusion, the second push protrusion, the first push protrusion and the second push protrusion are push ends, the first push protrusion corresponds to the setting of the first push end, and the first push protrusion
  • the height is higher than that of the second pushing protrusion, and the setting of the second pushing protrusion corresponds to the setting of the second pushing end.
  • the second pushing protrusion abuts against the second pushing end and pushes the second pushing end, Make the piston move towards the power supply spring, so that the power supply spring performs the first stage of energy storage.
  • the first push protrusion abuts against the first push end and pushes the first push end, The piston is moved toward the power supply spring, so that the power supply spring performs the second stage of energy storage.
  • the striker driving mechanism provided by the present invention can also have such technical features, and also includes a driving motor, which is used to drive the pushing member to rotate, drive the pushing protrusion to move, and then push the piston to move toward the power supply spring; and a one-way bearing installed on the The output end of the driving motor, wherein the wheel body is installed on the output end of the driving motor.
  • the present invention provides a nail gun, which is characterized in that it includes a striker for striking nails; and a striker driving mechanism for driving the striker to move, wherein the striker drive mechanism is the above-mentioned striker drive mechanism.
  • the nail gun provided by the present invention may also have the technical feature of further comprising a casing, the casing including a main body casing and a striker baffle, wherein the striker has at least a mounting portion for detachably mounting the striker to the piston,
  • the main casing has a replacement opening, the position of the replacement opening corresponds to the installation part, and the striker baffle is detachably mounted on the replacement opening.
  • the firing pin driving mechanism includes a regulation frame, a piston accommodated in the regulation frame, at least one force supply spring and a pushing member, one end of the force supply spring is fixed on the regulation frame, and One end is in contact with the piston, so the power supply spring can provide power for the movement of the piston, drive the piston to move and drive the striker installed on the piston to strike the nail, and the pushing member can push the piston to move in the direction of the power supply spring, thereby
  • the power supply spring compresses and stores energy;
  • the piston includes a piston body and a piston protector mounted on the piston body and facing the pushing member.
  • the piston body is made of light materials, compared with the prior art, the overall weight of the piston is greatly reduced, so it can Effectively improve the nailing force without increasing energy consumption, because the pushing end of the pushing member does not directly contact the piston, but abuts against the piston protector and pushes the piston through the piston protector, and the piston protector is made of wear-resistant material , thus reducing the wear generated during the movement of the piston, so that the piston has a longer service life.
  • Fig. 1 is a structural diagram of a nail gun according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded view of the structure of the nail gun according to Embodiment 1 of the present invention.
  • Fig. 3 is a structural diagram of the striker driving mechanism and the striker according to Embodiment 1 of the present invention.
  • Fig. 4 is a structural diagram of the striker driving mechanism and the striker at different angles according to Embodiment 1 of the present invention
  • Fig. 5 is an exploded view of the structure of the striker driving mechanism and the striker according to Embodiment 1 of the present invention
  • Fig. 6 is a structural diagram of a position-limiting base according to Embodiment 1 of the present invention.
  • Fig. 7 is a structural diagram of the piston of Embodiment 1 of the present invention.
  • Fig. 8 is a structural diagram of different angles of the piston according to Embodiment 1 of the present invention.
  • Fig. 9 is an orthographic projection view of the piston of Embodiment 1 of the present invention.
  • Fig. 10 is a sectional view of the piston of Embodiment 1 of the present invention.
  • Fig. 11 is a structural diagram of a pushing member according to Embodiment 1 of the present invention.
  • Fig. 12 is an orthographic projection view of a pushing member according to Embodiment 1 of the present invention.
  • Fig. 13 is an orthographic projection view of the piston of Embodiment 1 of the present invention.
  • Fig. 14 is a structural diagram of the first stage of energy storage in which the pushing member cooperates with the piston in Embodiment 1 of the present invention
  • Fig. 15 is a structural diagram of the second stage of energy storage in which the pushing member cooperates with the piston in Embodiment 1 of the present invention
  • Fig. 16 is a structural diagram of the piston reaching the maximum stroke in Embodiment 1 of the present invention.
  • Fig. 17 is an internal structure diagram of the nail gun according to Embodiment 1 of the present invention.
  • Fig. 18 is a structural diagram of the striker of Embodiment 1 of the present invention.
  • Fig. 19 is a structural diagram of the striker fixing part according to Embodiment 1 of the present invention.
  • Fig. 20 is an exploded view of the structure of the nozzle of Embodiment 1 of the present invention.
  • Fig. 21 is an exploded view of the structure of the nail gun according to Embodiment 1 of the present invention after the striker baffle and striker are disassembled;
  • Fig. 22 is a structural diagram of different angles of the striker baffle in Embodiment 1 of the present invention.
  • Fig. 23 is a structural diagram of the engagement of the striker baffle plate and the main body casing in Embodiment 1 of the present invention.
  • Fig. 24 is a structural diagram of the piston of Embodiment 2 of the present invention.
  • Fig. 25 is a structural view of the piston of the second embodiment of the present invention at different angles.
  • Nail shooting gun 10 shell 20; main body shell 21; left outer shell 211; left shell notch 2111; left supporting protrusion 2112; Lifting 2122; replacement opening 213; buckle positioning notch 2131; shell fastener 214; Buckle 223; first extension part 2231; second extension part 2232; installation through hole 224; support protrusion 225; striker driving mechanism 30; 3112; Baffle mounting hole 3113; Limiting plate 312; Limiting through hole 3121 regulation plate 313; Lightening hole 3131; Frame fastener 314; Guide rod 32; Spring assembly 33; Force spring 332; piston 34; piston main body 341; main body part 3411; spring contact groove 34111; The installation part 3413; the striker installation hole 34131; the first thrust part 3414; the second thrust part 3415; the first piston protection part 342; the second piston protection part 343; the protection part connecting part 3431; The second thrust end 346; the rolling element 35; the buffer element 36; the pushing member 37; the wheel body 371; the first pushing protru
  • This embodiment provides a firing pin drive mechanism and a nail gun with higher nail driving force, lighter structure and easier maintenance.
  • Fig. 1 is a structural diagram of a nail gun according to an embodiment of the present invention.
  • Fig. 2 is an exploded view of the structure of the nail gun according to the embodiment of the present invention.
  • the nail gun 10 of this embodiment includes a housing 20 and a striker driving mechanism 30 , a striker 40 , a nozzle 50 and a nail feeding mechanism 60 installed inside the housing 20 .
  • the nail gun 10 also includes internal components such as a battery and a control circuit that are not shown in the figure and installed in the casing 20 .
  • the housing 20 is used to house the aforementioned internal components such as the striker driving mechanism 30 , the striker 40 and the nail feeding mechanism 50 .
  • the striker driving mechanism 30 is used to drive the striker 40 to move along a predetermined reciprocating direction.
  • Fig. 3 is a structural view of the striker driving mechanism and the striker according to the embodiment of the present invention.
  • Fig. 4 is a structural view of the striker driving mechanism and the striker at different angles according to the embodiment of the present invention.
  • Fig. 5 is an exploded view of the structure of the striker driving mechanism and the striker according to the embodiment of the present invention.
  • the striker driving mechanism 30 of this embodiment includes a regulation frame 31, a guide rod 32, a spring assembly 33, a piston 34, a pair of rolling elements 35, a buffer element 36, a pushing member 37, a driving motor 38 and One-way bearing 39.
  • the regulation frame 31 is used to regulate and limit the piston 34 so that the piston 34 can only move along a predetermined reciprocating direction.
  • the direction indicated by the arrow D1 is the nail firing direction
  • the direction indicated by the arrow D2 is the energy storage direction
  • the reciprocating motion direction includes the above nail shooting direction and the energy storage direction.
  • the length direction of the regulating frame 31 is consistent with the reciprocating direction.
  • the regulating frame 31 includes a limiting base 311 , a limiting plate 312 and two regulating plates 313 .
  • the limiting base 311 is used to limit the movement of the piston 34 during nail shooting.
  • Fig. 6 is a structural diagram of a position-limiting base according to an embodiment of the present invention.
  • the limiting base 311 of this embodiment has a certain thickness, so it can withstand the impact of the piston 34 during nail shooting without deformation.
  • the middle part of the position-limiting base 311 has a guide rod installation hole 3111 and a buffer insert slot 3112 communicating with the guide rod installation hole 3111 .
  • the guide rod installation hole 3111 is a circular through hole matched with the guide rod 32 for fixing and installing the guide rod 32 .
  • the buffer member slot 3112 is a circular groove matching the buffer member 36 and used for fixing the buffer member 36 .
  • the limiting base 311 also has a plurality of other installation holes, which are respectively used for fixing and installing the striker baffle 22 and the regulating plate 313 .
  • the limiting plate 312 is used to limit the piston 34 and the spring assembly 33 .
  • the middle part of the limiting plate 312 has a circular limiting through hole 3121 matched with the guiding rod 32 for installing the guiding rod 32, and the diameter of the limiting through hole 3121 is greater than the diameter of the guiding rod 32, so that the guiding rod 32 can It is dynamically installed on the limiting plate 412.
  • the regulation plate 313 is used to regulate the movement direction of the piston 34 .
  • the two regulation plates 313 are arranged in parallel, and both extend along the length direction of the regulation frame 31 .
  • Each regulating plate 313 is provided with three lightening holes 3131 for lightening the structural weight.
  • Both the limiting base 311 and the limiting plate 312 are arranged perpendicular to the regulating plate 313, and the two ends of the limiting base 311 and the limiting plate 312 are respectively connected to the ends of the two regulating plates 313, and are connected by a plurality of frame fasteners 314 is fastened to form an open square frame.
  • the frame fastener 314 is a screw matched with a corresponding mounting hole.
  • the guide rod 32 is used to guide the movement of the piston 34 in a predetermined reciprocating direction.
  • the guide rod 32 is a circular rod with uniform thickness along its length direction.
  • One end of the guide rod 32 is fixedly installed in the middle of the limit base 311 through the guide rod mounting hole 3111, and the other end is movably installed in the limit base 311 through the limit through hole 3121.
  • the spring assembly 33 is used to provide power for striking the nail.
  • the spring assembly 33 of this embodiment includes a first force supply spring 331 and a second force supply spring 332 , both of which are set on the guide rod 32 , and one end of each is in contact with the limiting plate 312 , and the other end is in contact with the piston 34 .
  • the diameter of the first power supply spring 331 is larger than that of the second power supply spring 332, and the rotation directions of the first power supply spring 331 and the second power supply spring 332 are different.
  • 331 is in the outer layer, and the second power supply spring 332 is in the inner layer.
  • the piston 34 is used to drive the striker 40 mounted on the piston 34 to move.
  • Fig. 7 is a structural diagram of the piston of the embodiment of the present invention.
  • Fig. 8 is a structural view of the piston of the embodiment of the present invention at different angles.
  • the piston 34 of this embodiment includes a piston body 341 , a first piston protection part 342 and a second piston protection part 343 .
  • the piston body 341 is made of aluminum, and includes a body portion 3411 , a sleeve portion 3412 , a striker mounting portion 3413 , a first resisting portion 3414 and a second resisting portion 3415 .
  • the main body part 3411 is used for compressing the first force supply spring 331 and the second force supply spring 332 , and driving the striker 40 to move.
  • One side of the main body 3411 has a spring abutment groove 34111 for abutting against the ends of the first force supply spring 331 and the second force supply spring 332.
  • the ends of the first force supply spring 331 are matched, so one end of the first force supply spring 331 and the second force supply spring 332 can abut against the groove bottom of the spring abutment groove 34111, and the groove of the spring abutment groove 34111
  • the wall stops so that it does not disengage from the piston 34 during compression or release.
  • Both sides of the main body 3411 facing the two regulating plates 313 respectively have rolling element slots 34112 for installing the rolling elements 35 .
  • the rolling element insertion groove 34112 is a round bottom groove matching with the rolling element 35, and the rolling element insertion groove 34112 has a circular insertion groove opening 34112a.
  • Fig. 9 is an orthographic view of the piston of the embodiment of the present invention.
  • водем ⁇ exhaust through holes 34113 are opened on the main body 3411 for reducing wind resistance when the piston 34 moves.
  • the exhaust through hole 34113 is a circular through hole, and its extension direction is consistent with the extension direction of the sleeve through hole 34121, that is, it is consistent with the predetermined reciprocating movement direction.
  • eight exhaust through-holes 34113 are distributed around the sleeve through-hole 34121 and distributed symmetrically with the center axis of the sleeve through-hole 34121 as the center, so that the piston 34 is evenly stressed during movement.
  • the sleeve portion 3412 is disposed in the middle of the piston body 3411 and has a sleeve through hole 34121 for sleeved the piston 34 onto the guide rod 32 .
  • the sleeve connection hole 34121 is a circular through hole with a diameter greater than that of the guide rod 32 , and the inner wall of the sleeve connection hole 34121 is smooth, so that the piston 34 can slide along the length direction of the guide rod 32 after being sleeved on the guide rod 32 .
  • the striker installation part 3413 is arranged on the side of the piston body 341 facing the replacement opening 231 , and has a striker installation hole 34131 matching with the striker fixing part, for fixing and installing the striker 40 .
  • the first resisting portion 3414 and the second resisting portion 3415 are used to cooperate with the pushing member 37 to push the piston 34 toward the energy storage direction.
  • the first resisting portion 3414 and the second resisting portion 3415 are both disposed on the side of the piston body 341 close to the pushing member 37 , and are respectively located on two sides of the piston body 341 with the striker installation portion 3413 .
  • the first resisting portion 3414 extends from the piston body 341 toward the nail firing direction
  • the second resisting portion 3415 extends from the piston body 341 toward the pushing member 37
  • the second resisting portion 3415 is substantially perpendicular to the first resisting portion 3414 .
  • Both the first piston protection part 342 and the second piston protection part 343 are made of iron, so they are more wear-resistant and protect the piston body 341 .
  • the shape of the first piston protector 342 matches the first resisting portion 3414 , and the first piston protector 342 wraps on the first resisting portion 3414 to form the first resisting end 345 .
  • the shape of the second piston protector 343 matches the second resisting portion 3415 , and the second piston protector 343 wraps on the second resisting portion 3415 to form a second resisting end 346 .
  • Both the first piston protection member 342 and the second piston protection member 343 are fixedly installed on the piston main body 341 through corresponding fasteners (not shown in the figure), and in this embodiment, the fasteners are screws.
  • the rolling element 35 is used to reduce the frictional force encountered by the piston 34 during its movement.
  • the rolling element 35 is a steel ball, which is spherical, and its diameter is smaller than the slot opening 34112a, so the rolling element 35 can be installed into the rolling element slot 34112 through the slot opening 34112a, and can be connected with the rolling slot opening 34112 Fitting in a rolling manner, at the same time, the diameter of the rolling element 35 is greater than the depth of the rolling element slot 34112 , so when the rolling element 35 is fitted in the rolling element slot 34112 , the rolling element 35 protrudes outward from the rolling element slot 34112 .
  • Fig. 10 is a sectional view of a piston according to an embodiment of the present invention.
  • L2 in FIG. 9 is the overall width of the piston 34 after the rolling element 35 is installed
  • L1 in FIG. 10 is the distance between the two regulating plates 313 .
  • the two rolling elements 35 are respectively rotatably fitted in the two rolling element slots 34112, and are connected to the regulating plate 313 on the corresponding side respectively. It abuts against the inner side of the piston 34 . Since the rolling element 35 protrudes outward from the rolling element slot 34112, there is a certain distance between the regulating plate 313 and the piston 34, that is, L1>L2 in FIG. 9, and the two regulating plates 313 are not in direct contact with the piston 34.
  • the three lightening holes 3131 on the regulating plate 313 are all opened at positions other than the rolling path of the rolling element 35 , so the setting of the lightening holes 3131 does not affect the regulating effect of the regulating plate 313 .
  • the buffer member 36 is used to buffer the impact of the piston 34 during nail shooting, thereby protecting the position-limiting base 311 and the piston 34 , and meanwhile, the setting of the buffer member 36 can also reduce the rebound force of the piston 34 .
  • the buffer member 36 is a buffer pad made of soft plastic material, which is installed in the buffer member slot 3112 of the limit base 311, and the thickness of the buffer member 36 is greater than the depth of the buffer member slot 3112, so after installing the buffer member 36 protrudes outward from the buffer slot 3112, so that the piston 34 does not directly hit the position-limiting seat 311 during nail shooting.
  • the middle part of the buffer member 36 also has a through hole matching the guide rod 32 , so the setting of the buffer member 36 does not affect the installation of the guide rod 32 .
  • the pushing member 37 is used to push the piston 34 to move towards the spring assembly 33 , that is, to move towards the energy storage direction, so as to compress and store the first force supply spring 331 and the second force supply spring 332 .
  • Fig. 11 is a structural diagram of a pushing member according to an embodiment of the present invention.
  • the pushing member 37 of this embodiment is a cam with a wheel body 371, a first pushing protrusion 3711 and a second pushing protrusion 3712, that is, the cam has two The pushing end of the piston 34.
  • the wheel body 371 can rotate along its central axis, and drives the first pushing protrusion 3711 and the second pushing protrusion 3712 to move in an arc, thereby pushing the piston 34 to move.
  • the middle part of the wheel body 371 has a pivot hole 3713, through which the wheel body 371 is mounted to the output end of the drive motor 38 and rotates around the output end.
  • a plurality of lightening grooves are also provided on the wheel body 371 for reducing weight and energy consumption.
  • a first push protrusion 3711 and a second push protrusion 3712 are disposed on the side of the wheel body 371 facing the piston 34 .
  • the first pushing protrusion 3711 and the second pushing protrusion 3712 are both cylindrical, and the extending direction thereof is consistent with the extending direction of the pivot hole 3713 , and the height of the first pushing protrusion 3711 is higher than that of the second pushing protrusion 3712 .
  • the shape and height of the first pushing protrusion 3711 correspond to the setting of the first pushing end 345
  • the shape and height of the second pushing protrusion 3712 correspond to the setting of the second pushing end 346 .
  • Fig. 12 is an orthographic view of the pushing member of the embodiment of the present invention.
  • Figure 13 is an orthographic view of the piston of the embodiment of the present invention.
  • L3 is the distance between the first pushing protrusion 3711 and the second pushing protrusion 3712.
  • L4 is the distance between the end surface of the first pushing end 345 and the end surface of the second pushing end 346, L3>L4.
  • the piston 34 can only move along the predetermined nail shooting direction during nail shooting, and can cooperate with the pushing member 37, and can only move along the predetermined energy storage direction when the spring assembly 33 is storing energy.
  • Fig. 14 is a structural diagram of the first stage of energy storage in which the pushing member cooperates with the piston according to the embodiment of the present invention.
  • the pushing member 37 rotates under the driving of the driving motor 38 , and as the pushing member 37 rotates, the second pushing projection 3712 moves to the second pushing end 346 and contacts with the second pushing end 346 At this time, the pushing member 37 continues to rotate, and the second pushing protrusion 3712 makes an arc-shaped movement roughly toward the energy storage direction, and applies an arc-shaped pushing force toward the energy storage direction to the piston 34 through the second thrust end 346, Under the action of the driving force, the piston 34 can move along the guide rod 32 toward the energy storage direction, and can also perform circular motion around the guide rod 32 .
  • the direction of movement of the piston 34 is limited so that it cannot perform circular motion, that is, the piston 34 will not move along the width direction of the regulation frame 31. deflection, but can only move along the guide rod 32 toward the energy storage direction, thereby compressing the first force supply spring 331 and the second force supply spring 332 to store energy.
  • Fig. 15 is a structural diagram of the second stage of energy storage in which the pushing member cooperates with the piston according to the embodiment of the present invention.
  • Fig. 16 is a structural diagram when the piston of the embodiment of the present invention reaches the maximum stroke.
  • nailing can be performed.
  • the driving motor 38 drives the pushing member 37 to continue to rotate, and the first pushing protrusion 3711 rotates accordingly and breaks away from the first pushing end 345.
  • the first pushing protrusion 3711 and the second pushing protrusion 3712 are located at The movement path of the piston 34 is outside, so the piston 34 moves toward the nail-shooting direction under the elastic force of the spring assembly 33 until the piston 34 hits the buffer member 36, and the nail-shooting process is completed.
  • the driving motor 38 is used to drive the pushing member 37 to rotate, and then push the piston 34 to move through the pushing member 37 .
  • Fig. 17 is an internal structure diagram of the nail gun according to the embodiment of the present invention.
  • the drive motor 38 of this embodiment includes a rotating motor 381 and a deceleration and torque increasing unit 382 .
  • the deceleration and torque increasing unit 382 is installed at the output end of the rotating electrical machine 381, and is used to reduce the rotational speed of the output end of the rotating electrical machine 381, so as to obtain a higher output torque, that is, a greater driving force.
  • the end of the deceleration and torque increasing unit 382 is provided with an output shaft 3821, which is the output end of the driving motor 38, and the wheel body 371 of the pushing member 37 is installed on the output shaft 3821 through the pivot hole 3711, so that the pushing member 37 can Rotate synchronously with output shaft 3821.
  • the one-way bearing 39 is used to limit the rotation direction of the output end of the drive motor 38 so that it can only rotate in one direction.
  • the one-way bearing 39 is installed on the output shaft 3821 of the deceleration and torque increasing unit 382, and forms a hole shaft fit with the output shaft 3821, so that the output shaft 3821 can only rotate in one direction.
  • the pushing member 37 is subjected to the driving force of its reverse rotation, the one-way bearing 39 bears the driving force, so that the driving force is not transmitted to the output shaft 3821 , thereby protecting the driving motor 38 . Therefore, when performing the above-mentioned first stage of energy storage or the second stage of energy storage, the pushing member 37 will not reversely rotate under the force of the piston 34, resulting in false nail shooting.
  • the specific structures of the rotating electrical machine 381 , the deceleration and torque increasing unit 382 and the one-way bearing 39 can adopt structures in the prior art.
  • the firing pin 40 is used to strike the nail, so that the nail is ejected.
  • Fig. 18 is a structural diagram of different angles of the striker according to the embodiment of the present invention.
  • the striker 40 includes a mounting portion 41 and a guide striking portion 42 .
  • the mounting portion 41 is used to mount the striker 40 to the piston 34 .
  • the mounting part 41 has a mounting hole 411 .
  • the installation hole 411 is aligned with the striker installation hole 34131 on the piston 34 , and the striker fixing member 44 passes through the installation hole 411 and the striker installation hole 34131 to fix the striker 40 to the piston 34 .
  • the guide and impact part 42 is used for impacting the nail.
  • the guide and impact part 42 extends from the installation part 41 and is elongated with a width narrower than that of the installation part 41 .
  • One side of the guiding impact part 42 has a guiding groove 421 for regulating the moving direction of the firing pin 40 during the process of striking the firing pin.
  • Fig. 19 is a structural view of the striker fixing part according to the embodiment of the present invention.
  • the striker fixing member 44 of this embodiment includes an insertion portion 441 and a crimping portion 442 .
  • the insertion portion 441 is used to be inserted into the striker mounting hole 34131 on the piston 34 , thereby mounting the striker 40 to the piston 34 .
  • the insertion part 441 is a cylinder matching the striker installation hole 34131 .
  • the crimping portion 442 is used to cooperate with the striker baffle 22 to limit the striker 40 .
  • the crimping part 442 is connected with the insertion part 441, and the crimping part 442 is also roughly cylindrical and its diameter is greater than the diameter of the insertion part 441.
  • the crimping part 442 has a crimping top surface 4421 , and the crimping top surface 4421 has a predetermined curvature, so that the crimping top surface 4421 protrudes outward.
  • the crimping top surface 4421 of the crimping part 442 abuts against the inner surface of the striker 40 of the striker 22 facing the striker 40, thereby preventing the striker from being fixed.
  • Member 44 falls off during the reciprocating motion.
  • the crimping top surface 4421 is arc-shaped, the friction force during the reciprocating movement can be reduced.
  • the nozzle 50 is used to accommodate the firing pin 40 and limit the movement of the firing pin 40 when the firing pin 40 strikes the nail.
  • Fig. 20 is an exploded view of the structure of the nozzle of the embodiment of the present invention.
  • the nozzle 50 includes a firing pin accommodating part 501 and a nozzle cover 502 .
  • the firing pin accommodating part 501 has a groove.
  • a firing pin accommodating groove 5011 is formed between the groove and the surface of the nozzle cover plate 502 facing the groove.
  • the striker accommodating groove 5011 has an accommodating groove opening 5011a and a groove-shaped structure matched with the guide groove 421, so the guide impact part 42 of the striker 40 can be inserted into the striker accommodating groove 5011 from the accommodating groove opening 5011a, and accommodated with the striker
  • the slot 5011 is slidably engaged, and the striker 40 can also be taken out from the opening 5011a of the accommodating slot.
  • the nail gun 10 of this embodiment can also conveniently and quickly replace the firing pin 40 through the firing pin baffle plate 22 and the opening 5011 a of the accommodating groove.
  • Fig. 21 is an exploded view of the structure of the nail gun according to the embodiment of the present invention after disassembling the striker baffle and the striker.
  • the casing 20 includes a main body casing 21 and a striker baffle 22 .
  • the main body casing 21 is used for accommodating the striker driving mechanism 30 , the striker 40 and other internal components, and plays a protective role for the above-mentioned internal components.
  • the main body casing 21 includes a left outer casing 211 , a right outer casing 212 and a plurality of casing fasteners 214 .
  • the directions of "left”, “right”, “up” and “down” refer to the left, right, up and down based on the direction the operator faces when shooting nails with a gun.
  • the left outer casing 211 and the right outer casing 212 can be fitted together to form an integrated main body casing 21 , and can be fastened by a plurality of casing fasteners 214 .
  • the casing fastener 214 is a screw matching the casing installation holes on the left outer casing 211 and the right outer casing 212 .
  • the top of the left outer casing 211 has a left casing notch 2111
  • the right outer casing 212 has a right casing notch 2121 matching the left casing notch 2111.
  • the left outer casing 211 and the right outer casing 212 are fitted together , the left shell notch 2111 and the right shell notch 2121 are combined into a replacement opening 213 , that is, the main body casing 21 has a replacement opening 213 for replacing the striker 40 .
  • the replacement opening 213 is roughly rectangular, its length is greater than that of the striker 40 , and its width is greater than that of the striker 40 , so that it is convenient to take and place the striker 40 from the replacement opening 213 .
  • An end of the replacement opening 213 away from the striker 40 has a buckle positioning notch 2131 .
  • the projection of the replacement opening 213 on the plane where the accommodating slot opening 5011 is located covers the accommodating slot opening 5011a, that is, replacing the opening 213 completely exposes the accommodating slot opening 5011a.
  • the inner sides of the left outer casing 211 and the right outer casing 212 also have grid-shaped reinforcing ribs, and structures for supporting and fixing internal components such as motors, while the left outer casing 211 and the right outer casing 212 It also has a plurality of through holes for heat dissipation and exhaust.
  • the specific structures of the left outer casing 211 and the right outer casing 212 are prior art and will not be described in detail.
  • the striker baffle 22 is detachably installed on the replacement opening 213.
  • the replacement opening 213 is exposed, and the striker 40 can be easily replaced through the replacement opening 213;
  • the main body casing 21 and the striker baffle 22 form an integral shell 20, the overall structural strength is higher, and the internal components such as the striker driving mechanism 30 and the striker 40 are completely enclosed in the shell 20 to protect these internal components. It also protects the operator during the nailing process.
  • Fig. 22 is a structural view of the striker baffle 22 in different angles according to the embodiment of the present invention.
  • the striker baffle 22 includes a baffle inner surface 221 and a baffle outer surface 222 .
  • the baffle inner surface 221 faces the striker 40 .
  • the striker baffle 22 further includes a buckle 223 , a pair of installation through holes 224 and a pair of supporting protrusions 225 .
  • the inner surface 221 of the baffle has grid-shaped reinforcing ribs for strengthening the structural strength of the striker baffle 22 .
  • the reinforcing rib is composed of a plurality of convex lines, wherein the convex line 2211 located at the central axis of the striker baffle 22 along the length direction also plays a role in limiting the striker fixing part 44.
  • Fig. 23 is a structural diagram of the engagement of the buckle and the slot in the embodiment of the utility model.
  • the buckle 223 is arranged on the inner surface 221 of the baffle, the buckle 223 matches the slot 2113 of the left outer casing 211, and the striker baffle 22 and the main body casing 21 can pass through the buckle. 223 and the locking groove 2113 are engaged to limit the movement of the striker baffle 22 in the direction of nail shooting.
  • the buckle 223 includes a first extending portion 2231 substantially perpendicularly extending downward from the inner surface 221 of the baffle, and a second extending portion 2232 extending from an end of the first extending portion 2231 along the length direction of the striker baffle 22 .
  • the second extension portion 2232 extends into the slot 2113 so that the buckle 223 engages with the slot 2113 .
  • the buckle 223 is also matched with the buckle positioning notch 2131 , and the buckle 223 can be positioned to a predetermined loading position through the buckle positioning notch 2131 during installation, that is, the opening of the slot 2113 .
  • the striker baffle 22 is pushed along the nail shooting direction to engage the buckle 223 with the slot 2113, and the striker baffle 22 is pushed along the energy storage direction That is, the buckle 223 is disengaged from the slot 2113 .
  • a plurality of anti-slip protrusions 2211 on the outer surface 222 of the baffle, which are used to increase the friction force when the striker baffle 22 is pushed to engage or disengage the buckle 223 .
  • a plurality of anti-slip protrusions 2211 are arranged according to the above-mentioned reciprocating motion direction and are evenly spaced, and the length direction of each anti-slip protrusion 2211 is perpendicular to the reciprocating motion direction.
  • arrow-shaped indicator protrusion 2212 on the outer surface 222 of the baffle which is used to indicate the direction of force when disassembling the striker baffle 22, press the anti-slip protrusion 2211 on the striker baffle 22 and push the striker baffle in this direction 22, that is, the buckle 223 is disengaged from the slot 2113, so that the striker baffle 22 is removed.
  • the mounting through hole 224 is used to mount the striker guard 22 to the striker driving mechanism 30 .
  • the two baffle fasteners 226 respectively pass through the two installation through holes 224 and the two baffle installation holes 3113 on the limiting base 311 to fix one end of the striker baffle 22 to the limiting base 311 .
  • the installation through hole 224 and the buckle 223 are respectively disposed on both sides of the striker baffle 22 along the length direction, wherein the installation through hole 224 is disposed on a side close to the striker 40 .
  • the support protrusion 225 is used to support the striker baffle 22 after the striker baffle 22 is installed on the main body casing 21 , so as to prevent the striker baffle 22 from being stuck into the replacement opening 213 due to force.
  • a pair of supporting protrusions 225 are respectively located on both sides of the striker baffle 22 along its width direction, and the shape and position of the pair of supporting protrusions 225 are respectively related to the pair of supporting protrusions (that is, the above-mentioned left supporting protrusion 2112 and The shape and position of the right supporting protrusion 2122) are corresponding. After the striker baffle 22 is installed on the main body casing 21 , the pair of supporting protrusions 225 abut against the pair of supporting protrusions respectively.
  • the replacement opening 213 is exposed, and the installation part 41 of the striker 40 and the corresponding striker fixing part 44 are exposed from the replacement opening 213.
  • the firing pin fixing part 44 can be easily pulled out and removed for replacement.
  • the opening 3311 of the accommodating groove is exposed from the replacement opening 213.
  • a new striker 40 can be easily installed. Put the groove 5011, and align the installation hole 411 of the striker 40 with the striker installation hole 34131 on the piston 34, then insert the striker fixture 44 into the installation hole 411 and the striker installation hole 34131 and press it tightly to complete the new Installation of firing pin 40.
  • the striker baffle 22 can be installed again, and the main casing 21 and the striker baffle 22 form a complete casing 20 .
  • the direction and position of the opening of the regulatory frame 31 also correspond to the replacement opening 213, so after the striker baffle 22 is removed, it can also be replaced by replacing the striker baffle 22.
  • the opening 213 and the opening of the regulating frame 31 are used to inspect the piston 34 and the spring assembly 33 in the regulating frame 31 .
  • the nail feeding mechanism 60 is used to send multiple nails to the gun mouth 50 in sequence, and then the firing pin driving mechanism 30 drives the firing pin 40 to strike and shoot the nails at the gun mouth 50 .
  • the specific structure of the nail feeding mechanism 60 is the prior art, and will not be repeated here.
  • the striker driving mechanism 30 and the nail gun 10 of the embodiment of the present invention adopt a composite structure and a light-weight piston 34, and the striker driving mechanism 30 adopts a low-resistance structure such as a rolling element 35, so that the energy consumption is not increased.
  • the nailing force is effectively improved on the basis of
  • This embodiment provides a firing pin driving mechanism and a nail gun. Compared with Embodiment 1, the difference lies in that the piston of this embodiment is made of different materials and obtained through different production methods.
  • Fig. 24 is a structural diagram of a piston according to an embodiment of the present invention.
  • Fig. 25 is an exploded view of the structure of the piston of the embodiment of the present invention.
  • the piston 34 of this embodiment includes a piston body 341 , a first piston protection part 342 and a second piston protection part 343 .
  • the piston main body 431 is made of plastic material, and the first piston protection part 342 and the second piston protection part 343 are iron components. Its production method is to cast plastic onto iron components through corresponding moulds, thereby forming an integrated iron-plastic composite.
  • the second piston protector 343 has a protector connecting portion 3431, which is provided with a plurality of irregularly shaped through holes, and when pouring, the plastic in the molten state flows through these through holes, thereby After cooling and molding, a firm fitting structure is formed between the piston main body 431 and the second piston protector 343 .
  • the striker mounting portion 3413 of this embodiment is also formed on the second piston protector 343 .
  • This embodiment provides a firing pin drive mechanism and a nail gun, wherein, the structure of the piston body is shown in Figure 7 and Figure 8, compared with Embodiment 1, the difference is that the piston protection part of this embodiment is a protection Coated and made of different materials.
  • the piston body 341 is made of aluminum, and the protective coating is made of titanium, which are respectively coated on the first pushing part 3414 and the second pushing part 3415, and the coating range corresponds to that in the first embodiment.
  • the firing pin driving mechanism 30 includes a regulating frame 31, a piston 34, a spring assembly 33 and a pushing member 36, and the spring assembly 33 includes a first power supply spring 331 and a second force spring 331.
  • Two power supply springs 332 are fixed on the regulation frame 31 at one end, and abut against the piston 34 at the other end, so the two power supply springs can provide power for the movement of the piston 34, drive the piston 34 to move and drive it to be installed on the piston 34
  • the striker 40 is used to strike the nail, and the pushing member 36 can push the piston 34 to move toward the direction of the spring assembly 33, so as to simultaneously compress and store the first power supply spring 331 and the second power supply spring 332;
  • the piston 34 includes a piston body 341 And the first piston protector 342 and the second piston protector 343 installed on the piston main body 341 and facing the pushing member 37, since the piston main body 341 is an aluminum member, compared with the iron piston of the prior art, the piston of the first embodiment
  • the overall weight of 34 is greatly reduced, so the nail gun 10 of the first embodiment can effectively increase the nailing force without increasing energy consumption.
  • the pushing member 37 When the piston 34 is pushed by the pushing member 37, the pushing member 37 directly abuts and pushes the first piston protector 342 and the second piston protector 343, thereby pushing the piston 34, because the first piston protector 342 and the second piston protector 343 is an iron material, which is more wear-resistant, so it protects the aluminum piston body 341 and makes the piston 34 have a longer service life.
  • the piston body 341 has a first resisting portion 3414 extending along the nail firing direction and a second resisting portion 3415 extending toward the pushing member 37 and perpendicular to the first resisting portion 3414 , and the first piston protector 342 covers The first resisting end 345 is formed on the outer surface of the first resisting portion 3414, the second piston protector 343 is covered on the outer surface of the second resisting portion 3415 to form a second resisting end 346, and the first piston protecting member 342 and the second piston protector 343 are all iron parts, so the piston 34 has a wear-resistant first thrust end 345 and a second thrust end 346, so that the piston 34 wears little in the process of reciprocating motion, correspondingly Accordingly, the life of the piston 34 is longer.
  • the piston 34 is movably sleeved on the guide rod 32 through the sleeve through hole 34121, and a pair of rolling elements 35 are rotatably fitted on both sides of the piston 34 and respectively
  • the regulating plate 313 on the corresponding side abuts against each other. Therefore, the moving direction of the piston 34 can be regulated by regulating the frame 31, the guide rod 32 and the rolling member 35, so that the piston 34 can only move along the predetermined reciprocating direction without Movement or deflection occurs in other directions.
  • the regulation frame 31 is an open and detachable square frame, and the two regulation plates 313 are also provided with a plurality of lightening holes 3131, compared with the existing cylinder-type regulation structure, the regulation of this embodiment
  • the overall weight of the frame 31 is lighter, thereby reducing the labor intensity of the user, and the open and detachable frame is also more convenient for inspection and maintenance.
  • Embodiment 1 also provides a low-resistance piston structure, which can also effectively increase the nailing force without increasing energy consumption.
  • the pushing member 37 is a cam installed on the output end of the driving motor 38.
  • the cam has a first pushing protrusion 3711 and a second pushing protrusion 3712, which are respectively connected to the first pushing end 345 and the second pushing end 346.
  • the driving motor 38 can drive the pushing member 37 to rotate.
  • first the second pushing protrusion 3712 abuts and pushes the second pushing end 346, and the piston is fed by the second pushing end 346.
  • the striker driving mechanism 30 of the first embodiment can perform two-stage compression and energy storage, thereby obtaining greater ejection force.
  • the output end of the driving motor 38 is also equipped with a one-way bearing 39, so during the energy storage process and after the energy storage is completed, the cam will not reverse, thereby avoiding the situation of mistakenly shooting nails and improving the safety factor.
  • the striker baffle 22 is detachably mounted on the replacement opening 213, and the replacement opening 213 can make the installation part 41 of the striker 40, the striker accommodating groove 5011 The opening 5011a of the accommodating groove is completely exposed, so the firing pin 40 can be replaced conveniently and quickly through the replacement opening 213 after the firing pin baffle 22 is disassembled.
  • the replacement opening 213 also corresponds to the opening direction and position of the regulation frame 31 , therefore, the regulation frame 31 and its inner piston 34 , spring assembly 33 and other components can also be inspected through the replacement opening 213 .
  • the first piston protector 342 and the second piston protector 343 are iron components, and the piston body 341 is made of plastic material, which is cast on the first piston protector 342 and the second piston protector by iron-plastic composite method. 343, thereby forming a single piece. Since the piston body 341 is made of plastic, the overall weight of the piston 34 in the third embodiment is lighter, and correspondingly, the nailing force of the nail gun 10 is stronger. In addition, iron-plastic composite also has the advantages of convenient processing and low cost.
  • the first resisting portion 3414 and the second resisting portion 3415 of the piston 34 are respectively coated with a titanium coating to form a wear-resistant protective layer. Since the titanium material has higher strength, the service life of the piston 34 can be further improved, and since only two resisting parts of the piston 34 need to be coated, the coating area is small, so the cost is not high.
  • the guide rod 32 is a circular rod.
  • the guide rod installation hole 3111 of the limit base 311, the limit through hole 3121 of the limit plate 312 and the sleeve connection hole 34121 of the piston 34 are all
  • the guide rod 32 can also be a square rod, that is, its cross section along the nail shooting direction is set as a square.
  • the through hole 3121 and the sleeve connection hole 34121 are all matched square through holes, and the piston 34 can also be regulated by the square guide rod 32 and the corresponding square holes so that it cannot be used around the guide rod 32. Circular movement, so better regulation effect can be achieved.
  • the piston main body 341 is made of plastic, and poured on the iron component to form an iron-plastic composite integral part.
  • the piston main body 341 can also be an insert made of plastic. And form an iron-plastic composite integrated piece with the first piston protection piece 342 and the second piston protection piece 343 by means of inlaying.

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  • Portable Nailing Machines And Staplers (AREA)

Abstract

提供一种撞针驱动机构以及射钉枪，能够在不增加能耗基础上有效提高射钉力。撞针驱动机构（30）包括规制框架（31）以及安装在规制框架（31）内的导向杆（32）、活塞（34）、弹簧、滚动件（35）、推动构件（37）等，活塞（34）可动地套接在导向杆（32）上，活塞（34）包括活塞主体（341）和活塞保护件，由于活塞主体（341）由轻型材料构成，减轻了重量，因此能够在不增加能耗的情况下提高射钉力，同时由于采用了低阻力的设计，包括活塞（34）不直接与规制框架（31）接触，而是通过滚动件（35）与规制框架（31）相抵接，减小运动时的摩擦力，活塞（34）上开设有多个排气通孔（34113），减小运动时受到的风阻，因此能够进一步提高射钉力。由于活塞保护件由耐磨材料构成，推动构件（37）与活塞保护件抵接并通过活塞保护件推动活塞（34），因此使得活塞（34）有更长的使用寿命。

Description

撞针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，具体一种撞针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，这种射钉枪通过驱动电机以及相应的传动结构来推动活塞，进而活塞压缩供力弹簧进行蓄能。在射钉时，活塞在弹簧力的作用下瞬间做功，活塞的重量直接影响了射钉力的大小与回弹力的大小，活塞重量越重则射钉力越小，回弹力越大。现有技术中，活塞多由铁材质构成，因此重量较重，对射钉力影响较大。为克服上述问题、达到理想的射钉力，目前主要采用两种方法，其一是增大弹簧的弹力从而增加射钉力，但这种方法会造成耗能增加，也即一块电池周期内射钉的次数减少，同时弹簧力增加也造成了反弹力增大，因此用户持枪射钉时需要用力压住射钉枪才能满足操作要求，增加了劳动强度，导致用户体验差；其二是在射钉枪内增加对应的反震装置，减少活塞的反弹力从而增加射钉力，但是增加反震装置使得射钉枪的结构变得更为复杂，对各零件精度的要求更高，因此增加了产品的成本和制造难度，同时也增加了用户自行检修的难度。
因此，为了提高射钉力、同时不增加耗能、且使其更易于检修维护，需要一种具有新的优化结构的射钉枪。
发明内容
为解决上述问题，提供一种具有更高射钉力度且更易于检修维护的撞针驱动机构以及射钉枪，本发明采用了如下技术方案：
本发明提供了一种撞针驱动机构，其特征在于，包括规制框架；活塞，容纳在规制框架内；至少一根供力弹簧，其一端固定在规制框架上，另一端与活塞相抵接，用于为活塞的运动提供动力；以及推动构件，具有朝向活塞的推动端，用于推动活塞朝向供力弹簧运动，从而让该供力弹簧进行压缩蓄能，其中，撞针安装在活塞上，活塞包括活塞主体，由轻型材料构成；以及活塞保护件，与推动端相匹配，安装在活塞主体上并朝向推动构件，该活塞保护件由耐磨材料构成。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞主体为铝材质构件，具有朝向推动构件延伸的抵推部，活塞保护件为铁材质件，包覆在抵推部上。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞主体为铝材质构件，具有朝向推动构件延伸的抵推部，活塞保护件为铁材质件，包覆在抵推部上。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞保护件为铁材质构件，活塞主体由塑料构成，通过铁塑复合方法浇铸在活塞保护件上，形成一体件。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞主体为铝材质构件，具有朝向推动构件延伸的抵推部，活塞保护件为为钛材质涂层，涂覆在抵推部上。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，还包括导向杆，安装在规制框架内并沿该规制框架的长度方向延伸；以及至少一对滚动件，分别可滚动地嵌合在活塞的两侧，并分别与规制框架相抵接，其中，供力弹簧套装在导向杆上，活塞的中部具有套接通孔，活塞通过套接通孔可动地套接在导向杆上。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞上还开设有多个排气通孔，环绕分布在套接通孔的周围，排气通孔的延伸方向与导向杆的长度方向一致。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，规制框架具有两个规制板，两个规制板均沿规制框架的长度方向延伸，活塞主体的两侧具有两个滚动件嵌槽，一对滚动件分别可滚动地嵌合在两个滚动件嵌槽中且分别与对应侧的规制板相抵接。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，导向杆为圆形杆，套接通孔为与导向杆相匹配的圆形贯通孔。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，导向杆为方形杆，套接通孔为与导向杆相匹配的方形贯通孔。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，其中，活塞保护件的数量为两个，两个活塞保护件安装至活塞上，形成第一抵推端以及第二抵推端，第一抵推端从活塞沿射钉方向延伸出，第二抵推端从活塞垂直于第一抵推端且朝向推动构件延伸出，推动构件包括轮体以及设置在轮体上且朝向活塞的第一推动凸起、第二推动凸起，第一推动凸起以及第二推动凸起为推动端，第一推动凸起与第一抵推端的设置相对应，且该第一推动凸起的高度高于第二推动凸起，第二推动凸起与第二抵推端的设置相对应，轮体转动时，第二推动凸起与第二抵推端相抵接并推动第二抵推端，使得活塞朝向供力弹簧运动，从而使供力弹簧进行第一段蓄能，完所第一段蓄能后，第一推动凸起与第一抵推端相抵接并推动第一抵推端，使得活塞朝向供力弹簧运动，从而使供力弹簧进行第二段蓄能。
本发明提供的撞针驱动机构，还可以具有这样的技术特征，还包括驱动电机，用于驱动推动构件转动，带动推动凸起运动，进而推动活塞朝向供力弹簧运动；以及单向轴承，安装在驱动电机的输出端，其中，轮体安装在驱动电机的输出端。
本发明提供了一种射钉枪，其特征在于，包括撞针，用于撞击射钉；以及撞针驱动机构，用于驱动撞针运动，其中，撞针驱动机构为上述的撞针驱动机构。
本发明提供的射钉枪，还可以具有这样的技术特征，还包括外壳，该外壳包括主体机壳以及撞针挡板，其中，撞针至少具有安装部，用于将撞针可拆卸地安装至活塞，主体机壳具有一个更换开口，该更换开口的位置与安装部相对应，撞针挡板可拆卸地安装在更换开口上。
发明作用与效果
根据本发明的撞针驱动机构以及射钉枪，该撞针驱动机构包括规制框架、容纳在规制框架内的活塞、至少一根供力弹簧以及推动构件，供力弹簧的一端固定在规制框架上，另一端与活塞相抵接，因此供力弹簧能为活塞的运动提供动力，驱动活塞运动并带动安装在活塞上的撞针对射钉进行撞击，推动构件能够推动活塞朝向供力弹簧的方向运动，从而对该供力弹簧进行压缩蓄能；活塞包括活塞主体以及安装在活塞主体上并朝向推动构件的活塞保护件，由于活塞主体由轻型材料构成，对比现有技术，活塞的整体重量大大减轻，因此能够在不增加能耗的情况下有效提高射钉力，由于推动构件的推动端不直接接触活塞，而是与活塞保护件相抵接并通过活塞保护件推动活塞，且活塞保护件由耐磨材料构成，因此降低了在活塞的运动过程中产生的磨损，使得活塞具有更长的使用寿命。
附图说明
图1是本发明实施例一的射钉枪的结构图；
图2是本发明实施例一的射钉枪的结构分解图；
图3是本发明实施例一的撞针驱动机构及撞针的结构图；
图4是本发明实施例一的撞针驱动机构及撞针不同角度的结构图；
图5是本发明实施例一的撞针驱动机构及撞针的结构分解图；
图6是本发明实施例一的限位底座的结构图；
图7是本发明实施例一的活塞的结构图；
图8是本发明实施例一的活塞不同角度的结构图；
图9是本发明实施例一的活塞的正投影图；
图10是本发明实施例一的活塞的剖视图；
图11是本发明实施例一的推动构件的结构图；
图12是本发明实施例一的推动构件的正投影图；
图13是本发明实施例一的活塞的正投影图；
图14是本发明实施例一的推动构件与活塞配合进行第一段蓄能的结构图；
图15是本发明实施例一的推动构件与活塞配合进行第二段蓄能的结构图；
图16是本发明实施例一的活塞达到最大行程的结构图；
图17是本发明实施例一的射钉枪的内部结构图；
图18是本发明实施例一的撞针的结构图；
图19是本发明实施例一的撞针固定件的结构图；
图20是本发明实施例一的枪嘴的结构分解图；
图21是本发明实施例一的射钉枪将撞针挡板及撞针分解后的结构分解图；
图22是本发明实施例一的撞针挡板不同角度的结构图；
图23是本发明实施例一的撞针挡板与主体机壳相扣合的结构图；
图24是本发明实施例二的活塞的结构图；
图25是本发明实施例二的活塞不同角度的结构图。
附图标记：
射钉枪10；外壳20；主体机壳21；左外机壳211；左壳缺口2111；左承托凸起2112；卡槽2113；右外机壳212；右壳缺口2121；右承托凸起2122；更换开口213；卡扣定位缺口2131；外壳紧固件214；撞针挡板22；挡板内侧面221；凸条2211；挡板外侧面222；防滑凸起2211；指示凸起2212；卡扣223；第一延伸部2231；第二延伸部2232；安装通孔224；支撑凸起225；撞针驱动机构30；规制框架31；限位底座311；导向杆安装孔3111；缓冲件嵌槽3112；挡板安装孔3113；限位板312；限位通孔3121规制板313；减轻孔3131；框架紧固件314；导向杆32；弹簧组件33；第一供力弹簧331；第二供力弹簧332；活塞34；活塞主体341；主体部3411；弹簧抵接槽34111；滚动件嵌槽34112；嵌槽开口34112a；排气通孔34113；套接部3412；套接通孔34121；撞针安装部3413；撞针安装孔34131；第一抵推部3414；第二抵推部3415；第一活塞保护件342；第二活塞保护件343；保护件连接部3431；第一抵推端345；第二抵推端346；滚动件35；缓冲件36；推动构件37；轮体371；第一推动凸起3711；第二推动凸起3712；枢转孔3713；驱动电机38；旋转电机381；减速增扭单元382；输出轴3821；单向轴承39；撞针40；安装部41；安装孔411；引导撞击部42；引导槽421；撞针固定件44；插入部441；压接部442；压接顶面4421；枪嘴50；撞针容置件501；枪嘴盖板502；撞针容置槽5011；容置槽开口5011a；送钉机构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撞针驱动机构以及射钉枪作具体阐述。
<实施例一>
本实施例提供一种具有更高射钉力度、结构重量更轻且更易于检修维护的撞针驱动机构以及射钉枪。
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的结构分解图。
如图1和图2所示，本实施例的射钉枪10包括外壳20以及安装在外壳20内部的撞针驱动机构30、撞针40、枪嘴50以及送钉机构60。射钉枪10还包括图中未示出的安装在外壳20内的电池、控制电路等内部部件。
外壳20用于容置上述的撞针驱动机构30、撞针40以及送钉机构50等内部部件。
撞针驱动机构30用于驱动撞针40沿预定的往复运动方向运动。
图3是本发明实施例的撞针驱动机构及撞针的结构图。
图4是本发明实施例的撞针驱动机构及撞针不同角度的结构图。
图5是本发明实施例的撞针驱动机构及撞针的结构分解图。
如图3-5所示，本实施例的撞针驱动机构30包括规制框架31、导向杆32、弹簧组件33、活塞34、一对滚动件35、缓冲件36、推动构件37、驱动电机38以及单向轴承39。
规制框架31用于对活塞34进行规制和限位，使活塞34仅沿预定的往复运动方向运动。如图3所示，箭头D1所指示的方向为射钉方向，箭头D2所指示的方向为蓄能方向，往复运动方向包括上述的射钉方向以及蓄能方向。规制框架31的长度方向与该往复运动方向相一致。规制框架31包括限位底座311、限位板312以及两个规制板313。
限位底座311用于在射钉时对活塞34的运动进行限位。
图6是本发明实施例的限位底座的结构图。
如图6所示，本实施例的限位底座311具有一定的厚度，因此能够承受射钉时活塞34 的撞击而不发生形变。限位底座311的中部具有导向杆安装孔3111以及和导向杆安装孔3111连通的缓冲件嵌槽3112。导向杆安装孔3111为与导向杆32相匹配的圆形贯通孔，用于固定安装导向杆32。缓冲件嵌槽3112为与缓冲件36相匹配的圆形凹槽，用于固定安装缓冲件36。限位底座311还具有其他多个安装孔，分别用于固定安装撞针挡板22以及规制板313。
限位板312用于对活塞34以及弹簧组件33进行限位。限位板312的中部具有与导向杆32相匹配的圆形的限位通孔3121，用于安装导向杆32，并且限位通孔3121的直径大于导向杆32的直径，使得导向杆32可动地安装在限位板412上。
规制板313用于对活塞34的运动方向进行规制。两个规制板313平行设置，且均沿规制框架31的长度方向延伸。每个规制板313上开设有三个减轻孔3131，用于减轻结构重量。
限位底座311以及限位板312均垂直于规制板313设置，并且限位底座311以及限位板312的两端分别与两个规制板313的端部连接，并通过多个框架紧固件314实现紧固，形成了开放式的方形框架。本实施例中，框架紧固件314为与对应的安装孔相匹配的镙钉。
导向杆32用于导向活塞34沿预定的往复运动方向运动。导向杆32为沿其长度方向粗细均匀的圆形杆，导向杆32的一端通过导向杆安装孔3111固定安装在限位底座311的中部，另一端通过限位通孔3121可动地安装在限位板312的中部。
弹簧组件33用于为撞击射钉提供动力。本实施例的弹簧组件33包括第一供力弹簧331以及第二供力弹簧332，均套装在导向杆32上，且均为一端与限位板312相抵接，另一端与活塞34相抵接。其中，第一供力弹簧331的直径大于第二供力弹簧332，并且第一供力弹簧331和第二供力弹簧332的旋向不同，套装在导向杆32上时，第一供力弹簧331处于外层，第二供力弹簧332处于内层。
活塞34用于带动安装在活塞34上的撞针40运动。
图7是本发明实施例的活塞的结构图。
图8是本发明实施例的活塞不同角度的结构图。
如图7和图8所示，本实施例的活塞34包括活塞主体341、第一活塞保护件342以及第二活塞保护件343。
活塞主体341为铝材质构件，包括主体部3411、套接部3412、撞针安装部3413、第一抵推部3414以及第二抵推部3415。
主体部3411用于压缩第一供力弹簧331以及第二供力弹簧332，以及带动撞针40运动。主体部3411的一侧具有弹簧抵接槽34111，用于与第一供力弹簧331以及第二供力弹簧332的端部相抵接，弹簧嵌合槽34111的开口方向朝向弹簧组件33且形状与第一供力弹簧331的端部相匹配，因此第一供力弹簧331以及第二供力弹簧332的一端能够抵接在弹簧抵接槽34111的槽底，并被弹簧抵接槽34111的槽壁限位，从而不会在压缩或释放过程中与活塞34脱离。
主体部3411朝向两个规制板313的两侧分别具有滚动件嵌槽34112，用于安装滚动件35。滚动件嵌槽34112为与滚动件35相匹配的圆底槽，滚动件嵌槽34112具有圆形的嵌槽开口34112a。
图9是本发明实施例的活塞的正投影图。
如图9所示，主体部3411上还开设有八个排气通孔34113，用于在活塞34运动时减小风阻。排气通孔34113为圆形通孔，且其延伸方向与套接通孔34121的延伸方向相一致，也即与预定的往复运动方向相一致。同时，八个排气通孔34113环绕分布在套接通孔34121的周围，以套接通孔34121的中轴线为中心呈中心对称分布，使得活塞34在运动过程中受力均匀。
套接部3412设置在活塞本体3411的中部，具有一个套接通孔34121，用于将活塞34套接至导向杆32上。套接通孔34121为圆形通孔，其直径大于导向杆32的直径，且套接通孔34121的内壁光滑，使得活塞34套接至导向杆32后能够沿导向杆32的长度方向滑动。
撞针安装部3413设置在活塞本体341朝向更换开口231的侧边，具有与撞针固定件相匹配的撞针安装孔34131，用于固定安装撞针40。
第一抵推部3414以及第二抵推部3415用于与推动构件37配合将活塞34朝向蓄能方向推动。第一抵推部3414以及第二抵推部3415均设置在活塞本体341靠近推动构件37的侧 边，并与撞针安装部3413分别位于活塞本体341的两侧。第一抵推部3414从活塞本体341朝向射钉方向延伸，第二抵推部3415从活塞本体341朝向推动构件37延伸，且第二抵推部3415与第一抵推部3414大致垂直。
第一活塞保护件342以及第二活塞保护件343均为铁材质件，因此更为耐磨，对活塞主体341起到保护作用。其中，第一活塞保护件342的形状与第一抵推部3414相匹配，第一活塞保护件342包覆在第一抵推部3414上，构成第一抵推端345。第二活塞保护件343的形状与第二抵推部3415相匹配，第二活塞保护件343包覆在第二抵推部3415上，构成第二抵推端346。
第一活塞保护件342以及第二活塞保护件343均通过相应的紧固件(图中未示出)固定安装在活塞主体341上，本实施例中，该紧固件为镙钉。
滚动件35用于减少活塞34运动过程中受到的摩擦力。本实施例中，滚动件35为钢珠，其为球形，其直径小于嵌槽开口34112a，因此滚动件35能够通过嵌槽开口34112a安装至滚动件嵌槽34112中，且与滚动件嵌槽34112可滚动地嵌合，同时，滚动件35的直径大于滚动件嵌槽34112的深度，因此滚动件35嵌合在滚动件嵌槽34112中时，滚动件35从滚动件嵌槽34112向外凸出。
图10是本发明实施例的活塞的剖视图。
图9中L2为安装滚动件35后活塞34的整体宽度，图10中L1为两个规制板313之间的间距。如图9和图10所示，当活塞34安装在规制框架31中时，两个滚动件35分别可滚动地嵌合在两个滚动件嵌槽34112中，并分别与对应侧的规制板313朝向活塞34的内侧面相抵接。由于滚动件35从滚动件嵌槽34112向外凸出，因此规制板313与活塞34之间具有一定的距离，也即图9中的L1>L2，两个规制板313与活塞34不直接接触，从而减小活塞34在运动时受到的摩擦力。此外，规制板313上的三个减轻孔3131均开设在滚动件35的滚动路径以外的位置，因此减轻孔3131的设置不影响规制板313的规制作用。
缓冲件36用于在射钉时对活塞34的撞击进行缓冲，从而对限位底座311以及活塞34起到保护作用，同时，缓冲件36的设置也能减少活塞34的反弹力。本实施例中，缓冲件36为软塑料材质的缓冲垫，安装在限位底座311的缓冲件嵌槽3112中，并且缓冲件36的厚度大于缓冲件嵌槽3112的深度，因此安装后缓冲件36从缓冲件嵌槽3112向外凸出，使得射钉时，活塞34不直接撞击限位座位311。同时，缓冲件36的中部也具有一个与导向杆32相匹配的贯通孔，因此缓冲件36的设置不影响导向杆32的安装。
推动构件37用于推动活塞34朝向弹簧组件33运动，也即朝向蓄能方向运动，从而对第一供力弹簧331以及第二供力弹簧332进行压缩蓄能。
图11是本发明实施例的推动构件的结构图。
如图3-5和图11所示，本实施例的推动构件37为凸轮，具有轮体371、第一推动凸起3711以及第二推动凸起3712，也即该凸轮具有两个用于推动活塞34的推动端。
轮体371能够沿其中轴线进行转动，带动第一推动凸起3711以及第二推动凸起3712进行弧形运动，进而推动活塞34运动。轮体371的中部具有枢转孔3713，轮体371通过该枢转孔3713安装到驱动电机38的输出端并以该输出端为轴线转动。轮体371上还开设有多个减轻凹槽，用于减轻重量从而减少能耗。
轮体371朝向活塞34的一侧设置有第一推动凸起3711以及第二推动凸起3712。第一推动凸起3711以及第二推动凸起3712均为圆柱形，其延伸方向和枢转孔3713的延伸方向一致，并且第一推动凸起3711的高度高于第二推动凸起3712。
第一推动凸起3711的形状、高度与第一抵推端345的设置相对应，第二推动凸起3712的形状、高度与第二抵推端346的设置相对应。
图12是本发明实施例的推动构件的正投影图。
图13是本发明实施例的活塞的正投影图。
图12中L3为第一推动凸起3711和第二推动凸起3712之间的距离，图13中L4为第一抵推端345的端面和第二抵推端346的端面之间的距离，L3>L4。
基于上述的结构，活塞34在射钉时能仅沿预定的射钉方向运动，并且能与推动构件37配合工作，在进行弹簧组件33的蓄能时也能仅沿预定的蓄能方向运动。
图14是本发明实施例的推动构件与活塞配合进行第一段蓄能的结构图。
如图14所示，推动构件37在驱动电机38的驱动下转动，随着推动构件37的转动，第二推动凸起3712移动至第二抵推端346处，并与第二抵推端346相抵接，此时推动构件37继续转动，第二推动凸起3712作大致朝向蓄能方向的弧形运动，通过第二抵推端346给活塞34施加大致朝向蓄能方向的弧形推动力，活塞34在该推动力的作用下能够沿导向杆32朝向蓄能方向运动，同时也能绕导向杆32进行圆周运动。由于活塞34通过一对滚动件35分别与对应侧的规制板313相抵接，因此限制了活塞34的运动方向，使其不能进行圆周运动，也即活塞34不会沿规制框架31的宽度方向产生偏转，而仅能沿导向杆32朝向蓄能方向运动，从而压缩第一供力弹簧331以及第二供力弹簧332进行蓄能。
图15是本发明实施例的推动构件与活塞配合进行第二段蓄能的结构图。图16是本发明实施例的活塞达到最大行程时的结构图。
如图15和图16所示，第二推动凸起3712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37继续转动，第二推动凸起3712随之转动并脱离第二抵推端346，同时，第一推动凸起3711转动至第一抵推端345处并与第一抵推端345相抵接，随后，第一推动凸起3711以相同方式推动活塞34进一步朝向蓄能方向运动，直至第一推动凸起3711沿蓄能方向转动至最大行程，完成第二段蓄能。
完成第二段蓄能后，就可以进行射钉。在射钉时，驱动电机38驱动推动构件37继续转动，第一推动凸起3711随之转动并脱离第一抵推端345，此时第一推动凸起3711以及第二推动凸起3712都位于活塞34的运动路径以外，因此活塞34在弹簧组件33的弹力的作用下朝向射钉方向运动，直至活塞34撞击到缓冲件36，完成射钉过程。
驱动电机38用于驱动推动构件37进行转动，进而通过推动构件37推动活塞34运动。
图17是本发明实施例的射钉枪的内部结构图。
如图5和图17所示，本实施例的驱动电机38包括旋转电机381以及减速增扭单元382。减速增扭单元382安装在旋转电机381的输出端，用于降低旋转电机381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。减速增扭单元382的末端设置有输出轴3821，该输出轴3821即为驱动电机38的输出端，推动构件37的轮体371通过枢转孔3711安装在输出轴3821上，使得推动构件37能够与输出轴3821同步转动。
单向轴承39用于限制驱动电机38的输出端的转动方向，使其仅能进行单向转动。单向轴承39安装在减速增扭单元382的输出轴3821上，并与输出轴3821形成孔轴配合，从而使输出轴3821只能进行单向转动。同时，当推动构件37受使其反向转动的推动力时，单向轴承39承受该推动力，使得该推动力不传导到输出轴3821上，从而对驱动电机38起到保护作用。因此，在进行上述的第一段蓄能或第二段蓄能时，推动构件37不会在活塞34的作用力下产生反向旋转，而导致误射钉。
旋转电机381、减速增扭单元382以及单向轴承39的具体结构可采用现有技术中的结构。
撞针40用于对射钉进行撞击，从而使射钉射出。
图18是本发明实施例的撞针不同角度的结构图。
如图18所示，撞针40包括安装部41以及引导撞击部42。
安装部41用于将撞针40安装至活塞34上。安装部41具有一个安装孔411。在进行安装时，该安装孔411与活塞34上的撞针安装孔34131对齐，撞针固定件44穿过安装孔411以及撞针安装孔34131将撞针40固定安装至活塞34上。
引导撞击部42用于撞击射钉，引导撞击部42从安装部41延伸，呈长条形，具宽度比安装部41窄。引导撞击部42的一侧具有引导槽421，用于在撞击射针过程中规制撞针40的运动方向。
图19是本发明实施例的撞针固定件的结构图。
如图19所示，本实施例的撞针固定件44包括插入部441以及压接部442。
插入部441用于插入活塞34上的撞针安装孔34131，从而将撞针40安装至活塞34。插入部441为与撞针安装孔34131相匹配的圆柱体。
压接部442用于与撞针挡板22配合对撞针40进行限位。压接部442与插入部441相连 接，压接部442也大致为圆柱体且其直径大于插入部441的直径。压接部442具有压接顶面4421，该压接顶面4421具有预定的孤度，使压接顶面4421向外凸出。当撞针40安装在活塞31上且撞针挡板22安装在主体机壳21上时，压接部442的压接顶面4421与撞针挡板22朝向撞针40的内表面相抵接，从而避免撞针固定件44在往复运动过程中脱落。同时，由于压接顶面4421为弧形，因此能减小往复运动过程中的摩擦力。
枪嘴50用于容置撞针40，并在撞针40对射钉进行撞击时对撞针40的运动进行限位。
图20是本发明实施例的枪嘴的结构分解图。
如图2和图20所示，枪嘴50包括撞针容置件501以及枪嘴盖板502。
撞针容置件501具有一个凹槽，撞针容置件501与枪嘴盖板502安装到一起时，该凹槽与枪嘴盖板502朝向该凹槽的表面之间形成撞针容置槽5011，用于容置撞针40。撞针容置槽5011具有容置槽开口5011a以及与引导槽421相匹配的槽状结构，因此撞针40的引导撞击部42能够从容置槽开口5011a处插入撞针容置槽5011，并与撞针容置槽5011可滑动地嵌合，同样能够从容置槽开口5011a处取出撞针40。
本实施例的射钉枪10还能够通过撞针挡板22以及容置槽开口5011a方便快捷地进行撞针40的更换。
图21是本发明实施例的射钉枪将撞针挡板及撞针分解后的结构分解图。
如图2和图21所示，外壳20包括主体机壳21以及撞针挡板22。
主体机壳21用于容置撞针驱动机构30、撞针40以及其他内部部件，并对上述的内部部件起到保护作用。如图2所示，主体机壳21包括左外机壳211、右外机壳212以及多个外壳紧固件214。此外，本实施例中，“左”、“右”、“上”、“下”各个方向是以操作者持枪射钉时面对方向为基准的左侧、右侧、上方、下方。
左外机壳211以及右外机壳212能够相互配合安装到一起形成一体的主体机壳21，并能通过多个外壳紧固件214实现紧固。本实施例中，外壳紧固件214为与左外机壳211以及右外机壳212上的机壳安装孔相匹配的镙钉。
左外机壳211的顶部具有左壳缺口2111，右外机壳212具有与左壳缺口2111相匹配的右壳缺口2121，当左外机壳211与右外机壳212相互配合安装到一起时，左壳缺口2111以及右壳缺口2121拼合成更换开口213，也即主体机壳21具有一个更换开口213，用于更换撞针40。
更换开口213大致为矩形，其长度大于撞针40的长度，且其宽度大于撞针40的宽度，从而便于从更换开口213处取放撞针40。更换开口213远离撞针40的一端具有卡扣定位缺口2131。同时，更换开口213在容置槽开口5011所在的平面上的投影覆盖容置槽开口5011a，也即更换开口213使容置槽开口5011a完全露出。
左外机壳211以及右外机壳212的内侧面还具有网格状的加强筋，以及用于承托、固定住电机等内部部件的结构，同时左外机壳211以及右外机壳212还具有多个散热、排气用的通孔，左外机壳211以及右外机壳212的具体结构为现有技术不再详细说明。
撞针挡板22可拆卸地安装在更换开口213上，当撞针挡板22被拆卸下时，更换开口213露出，即可通过更换开口213便捷地更换撞针40；当撞针挡板22安装上时，主体机壳21与撞针挡板22构成一体的外壳20，整体结构强度更高，并且使撞针驱动机构30、撞针40等内部部件完全封闭在外壳20内，对这些内部部件起到保护作用，同时也在射钉过程中对操作者起到保护作用。
图22是本发明实施例的撞针挡板22不同角度的结构图。
如图21和图22所示，撞针挡板22包括挡板内侧面221以及挡板外侧面222，当撞针挡板22安装在更换开口213上时，挡板内侧面221朝向撞针40。撞针挡板22还包括卡扣223、一对安装通孔224以及一对支撑凸起225。
挡板内侧面221具有网格状的加强筋，用于加强撞针挡板22的结构强度。加强筋由多个凸条构成，其中位于撞针挡板22沿长度方向的中轴线处的凸条2211还对撞针固定件44起到限位作用，当撞针40安装在活塞34上且撞针挡板22安装在更换开口213上时，挡板内侧面221上的凸条2211与撞针固定件44的压接顶面4421相抵接。
图23是本实用新型实施例中卡扣与卡槽相卡合的结构图。
如图22和图23所示，卡扣223设置在挡板内侧面221上，卡扣223与左外机壳211的卡槽2113相匹配，撞针挡板22和主体机壳21能够通过卡扣223以及卡槽2113相卡合，从而限制撞针挡板22朝射钉方向的移动。
具体地，卡扣223包括从挡板内侧面221大致垂直向下延伸的第一延伸部2231以及从第一延伸部2231的端部沿撞针挡板22的长度方向延伸的第二延伸部2232。第二延伸部2232伸入卡槽2113使卡扣223与卡槽2113相卡合。卡扣223也和卡扣定位缺口2131相匹配，安装时能够通过卡扣定位缺口2131将卡扣223定位至预定的装入位置，也即卡槽2113的开口处。即，将卡扣223对准卡扣定位缺口2131并按下后，沿射钉方向推动撞针挡板22即可使卡扣223与卡槽2113相卡合，沿蓄能方向推动撞针挡板22即可使卡扣223脱离卡槽2113。
挡板外侧面222上具有多个防滑凸起2211，用于在推动撞针挡板22使卡扣223卡合或脱离时增加摩擦力。多个防滑凸起2211按上述的往复运动方向排布且间隔均匀，并且每个防滑凸起2211的长度方向垂直于往复运动方向。挡板外侧面222上还具有一个箭头形状的指示凸起2212，用于指示拆卸撞针挡板22时的用力方向，按住撞针挡板22上的防滑凸起2211并朝向该方向推动撞针挡板22，即可使卡扣223脱离卡槽2113，从而卸下撞针挡板22。
安装通孔224用于将撞针挡板22安装至撞针驱动机构30。两个挡板紧固件226分别穿过两个安装通孔224以及限位底座311上的两个挡板安装孔3113，将撞针挡板22的一端固定安装至限位底座311。安装通孔224和卡扣223分别设置在撞针挡板22沿长度方向的两侧，其中安装通孔224设置在靠近撞针40的一侧。
支撑凸起225用于在撞针挡板22安装至主体机壳21上后对撞针挡板22起到支撑作用，避免撞针挡板22因受力而卡入更换开口213。一对支撑凸起225分别位于撞针挡板22沿其宽度方向的两侧，并且一对支撑凸起225的形状及位置分别与一对承托凸起(即上述的左承托凸起2112以及右承托凸起2122)的形状及位置相对应。撞针挡板22安装至主体机壳21上后，一对支撑凸起225分别与一对承托凸起相抵接。
在卸下撞针挡板22后，更换开口213露出，撞针40的安装部41以及对应的撞针固定件44从更换开口213露出，此时就可以方便地拨出撞针固定件44、拆卸下待更换的撞针40。在拆卸下待更换的撞针40后，容置槽开口3311从更换开口213露出，此时就可以方便地安装新的撞针40，具体地，将新的撞针40通过容置槽开口5011a插入撞针容置槽5011，并将撞针40的安装孔411与活塞34上的撞针安装孔撞针安装孔34131对齐，随后将撞针固定件44插入安装孔411和撞针安装孔34131并按压紧实，完成新的撞针40的安装。
新的撞针40安装完成后，就可以再次安装上撞针挡板22，主体机壳21与撞针挡板22形成完整的机壳20。
同时，如图21所示，当撞针驱动机构30安装在外壳20内时，规制框架31的开口的方向及位置也与更换开口213相对应，因此拆卸下撞针挡板22后，也能够通过更换开口213以及规制框架31的开口对规制框架31内的活塞34、弹簧组件33等进行检查。
送钉机构60用于将多个射钉依次送至枪嘴50处，随后撞针驱动机构30驱动撞针40将枪嘴50处的射钉撞击射出。送钉机构60的具体结构为现有技术，在此不再赘述。
如上所述，本发明实施例的撞针驱动机构30及射钉枪10采用了复合结构、重量轻的活塞34，并且撞针驱动机构30采用了滚动件35等低阻力结构，因此在不增加能耗的基础上有效提高了射钉力。
<实施例二>
本实施例提供一种撞针驱动机构以及射钉枪，和实施例一相比，区别之处在于，本实施例的活塞由不同材质构成，并经由不同的生产方式得到。
图24是本发明实施例的活塞的结构图。
图25是本发明实施例的活塞的结构分解图。
如图24和图25所示，本实施例的活塞34包括活塞主体341、第一活塞保护件342以及第二活塞保护件343。
其中，活塞主体431由塑料材质构成，第一活塞保护件342以及第二活塞保护件343为铁材质构件。其生产方式为通过对应的模具，将塑料浇铸到铁材质构件上，从而形成铁塑 复合的一体件。
如图21所示，第二活塞保护件343具有保护件连接部3431，其上开设有多个不规则形状的通孔，在进行浇涛时，熔融状态的塑料流过这些通孔，从而在冷却成型后，活塞主体431与第二活塞保护件343之间形成牢固的嵌合结构。此外，本实施例的撞针安装部3413也形成在第二活塞保护件343上。
通过上述方式形成一体的活塞34后，本实施例的活塞34与实施例一的活塞34的结构及功能一致。
本实施例中，其他结构及相应的工作原理与实施例一中相同，不再重复说明。
<实施例三>
本实施例提供一种撞针驱动机构以及射钉枪，其中，活塞主体的结构如图7和图8所示，与实施例一相比，区别之处在于，本实施例的活塞保护件为保护涂层且由不同材质构成。
本实施例中，活塞主体341为铝材质构件，保护涂层为钛材质涂层，分别涂覆在第一抵推部3414以及第二抵推部3415上，涂覆范围对应于实施例一中第一活塞保护件342以及第二活塞保护件343所包覆住的范围。
本实施例中，其他结构及相应的工作原理与实施例一中相同，不再重复说明。
实施例作用与效果
根据本发明实施例一提供的撞针驱动机构30以及射钉枪10，撞针驱动机构30包括规制框架31、活塞34、弹簧组件33以及推动构件36，弹簧组件33包括第一供力弹簧331以及第二供力弹簧332，均为一端固定在规制框架31上，另一端与活塞34相抵接，因此两根供力弹簧能为活塞34的运动提供动力，驱动活塞34运动并带动安装在活塞34上的撞针40进行撞击射钉，推动构件36能够推动活塞34朝向弹簧组件33的方向运动，从而同时对第一供力弹簧331以及第二供力弹簧332进行压缩蓄能；活塞34包括活塞主体341以及安装在活塞主体341上并朝向推动构件37的第一活塞保护件342以及第二活塞保护件343，由于活塞主体341为铝材质构件，对比现有技术的铁材质活塞，实施例一的活塞34的整体重量大大减轻，因此实施例一的射钉枪10能够在不增加能耗的情况下有效提高射钉力。在活塞34被推动构件37推动时，推动构件37直接抵接并推动第一活塞保护件342以及第二活塞保护件343，进而推动活塞34，由于第一活塞保护件342以及第二活塞保护件343为铁材质件，更为耐磨，因此对铝材质的活塞主体341起到了保护作用，使得活塞34的使用寿命更长。
具体地，活塞主体341具有沿射钉方向延伸的第一抵推部3414以及朝向推动构件37并垂直于第一抵推部3414延伸的第二抵推部3415，第一活塞保护件342包覆在第一抵推部3414的外表面形成第一抵推端345，第二活塞保护件343包覆在第二抵推部3415的外表面形成第二抵推端346，并且第一活塞保护件342和第二活塞保护件343均为铁材质件，因此活塞34具有耐磨的第一抵推端345和第二抵推端346，使得活塞34在进行往复运动的过程中磨损很少，相应地，活塞34的使用寿命更长。
进一步，由于具有规制框架31以及导向杆32，活塞34通过套接通孔34121可动地套接在导向杆32上，一对滚动件35可滚动地嵌合在活塞34的两侧并分别与对应侧的规制板313相抵接，因此，能够通过规制框架31、导向杆32以及滚动件35对活塞34的运动方向进行规制，使活塞34仅能沿预定的往复运动方向进行运动，而不会沿其他方向发生移动或偏转。此外，由于规制框架31为开放式、可拆卸的方形框架，并且两个规制板313上还开设有多个减轻孔3131，因此相对比现有的缸体式的规制结构，本实施例的规制框架31整体重量更轻，从而降低了用户的劳动强度，同时开放式、可拆卸的框架也更便于检修维护。
进一步，由于套接通孔34121的直径大于导向杆32的直径，且套接通孔34121的内壁光滑，因此活塞34运动时与导向杆32之间的摩擦力很小，同时，由于活塞34通过一对滚动件35(钢珠)与规制板313相抵接，而不直接接触规制板313，因此活塞34运动时与规制板313之间的摩擦力也很小，还由于活塞34上开设有多个排气通孔34113，因此还减小了活塞34运动时受到的风阻。因此，实施例一还提供了一种低阻力的活塞结构，同样能够 在不增加能耗的情况下有效提高射钉力。
进一步，推动构件37为凸轮，安装在驱动电机38的输出端，该凸轮具有第一推动凸起3711以及第二推动凸起3712，分别与第一抵推端345以及第二抵推端346的设置相对应，因此，驱动电机38能够驱动推动构件37进行转动，推动构件37转动时，首先第二推动凸起3712抵接并推动第二抵推端346，通过第二抵推端346给活塞34施加朝向蓄能方向的弧形推动力，活塞34在该推动力以及规制结构的作用下朝向蓄能方向运动，从而压缩两根供力弹簧，完成第一段蓄能，随后推动构件37继续转动时，第二推动凸起3712从第二抵推端346处脱离，同时第一推动凸起3711抵接并推动第一抵推端345，从而以相同方式完成第二段蓄能。因此，实施例一的撞针驱动机构30能够进行两段压缩蓄能，从而获得更大的弹射力。同时，驱动电机38的输出端还安装有单向轴承39，因此在蓄能过程中以及蓄能完成后，凸轮都不会发生反转，从而避免了误射钉的情况，提高了安全系数。
此外，由于射钉枪10的主体机壳21具有一个更换开口213，撞针挡板22可拆卸地安装在更换开口213上，该更换开口213能够使撞针40的安装部41、撞针容置槽5011的容置槽开口5011a完全露出，因此拆卸下撞针挡板22后就能够通过更换开口213方便快捷地进行撞针40的更换。同时，更换开口213也与规制框架31的开口方向及位置相对应，因此，同样可以通过该更换开口213对规制框架31及其内部的活塞34、弹簧组件33等部件进行检查。
实施例二中，第一活塞保护件342以及第二活塞保护件343均为铁材质构件，活塞主体341由塑料材质构成，通过铁塑复合方式浇铸在第一活塞保护件342以及第二活塞保护件343上，从而形成一体件。由于活塞主体341为塑料材质，因此实施例三的活塞34的整体重量更轻，相应地，射钉枪10的射钉力更强。此外，铁塑复合还具有加工方便、成本低的优点。
实施例三中，活塞34的第一抵推部3414以及第二抵推部3415上分别涂覆有钛材质的涂层，从而形成耐磨的保护层。由于钛材质具有更高的强度，因此能够进一步提高活塞34的使用寿命，并且由于只需要涂覆活塞34的两个抵推部，涂覆面积小，因此成本也并不高。
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。
在上述实施例一中，导向杆32为圆形杆，相应地，限位底座311的导向杆安装孔3111、限位板312的限位通孔3121以及活塞34的套接通孔34121均为与之相匹配的圆形贯通孔，在本发明的其他方案中，导向杆32也可以为方形杆，即其沿射钉方向的截面设置为方形，相应地，导向杆安装孔3111、限位通孔3121以及套接通孔34121均为与之相匹配的方形贯通孔，通过方形的导向杆32以及对应的各个方形孔也能够对活塞34起到规制作用，使其不能绕导向杆32作圆周运动，因此能够达到更好的规制效果。
在上述实施例二中，活塞主体341由塑料构成，浇涛在铁材质构件上形成铁塑复合的一体件，在本发明的其他方案中，活塞主体341也可以为由塑料构成的镶嵌件，并通过镶嵌方式和第一活塞保护件342以及第二活塞保护件343形成铁塑复合的一体件。

Claims (13)

  1. 一种撞针驱动机构，安装在射钉枪内并用于驱动撞针对射钉进行撞击，其特征在于，包括：
    规制框架；
    活塞，容纳在所述规制框架内；
    至少一根供力弹簧，其一端与所述规制框架抵接，另一端与所述活塞抵接，用于为所述活塞的运动提供动力；以及
    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，
    其中，所述撞针安装在所述活塞上，
    所述活塞包括：
    活塞主体，由轻型材料构成；以及
    活塞保护件，与所述推动端相匹配，安装在所述活塞主体上并朝向所述推动构件，该活塞保护件由耐磨材料构成。
  2. 根据权利要求1所述的撞针驱动机构，其特征在于：
    其中，所述活塞主体为铝材质构件，具有朝向所述推动构件延伸的抵推部，
    所述活塞保护件为铁材质件，包覆在所述抵推部上。
  3. 根据权利要求1所述的撞针驱动机构，其特征在于：
    其中，所述活塞保护件为铁材质构件，
    所述活塞主体由塑料构成，通过铁塑复合方法浇铸在所述活塞保护件上，形成一体件。
  4. 根据权利要求1所述的撞针驱动机构，其特征在于：
    其中，所述活塞主体为铝材质构件，具有朝向所述推动构件延伸的抵推部，
    所述活塞保护件为钛材质涂层，涂覆在所述抵推部上。
  5. 根据权利要求1所述的撞针驱动机构，其特征在于，还包括：
    导向杆，安装在所述规制框架内并沿该规制框架的长度方向延伸；以及
    至少一对滚动件，分别可滚动地嵌合在所述活塞的两侧，并分别与所述规制框架相抵接，
    其中，所述供力弹簧套装在所述导向杆上，
    所述活塞的中部具有套接通孔，所述活塞通过所述套接通孔可动地套接在所述导向杆上。
  6. 根据权利要求5所述的撞针驱动机构，其特征在于：
    其中，所述活塞上还开设有多个排气通孔，环绕分布在所述套接通孔的周围，
    所述排气通孔的延伸方向与所述导向杆的长度方向一致。
  7. 根据权利要求5所述的撞针驱动机构，其特征在于：
    其中，所述规制框架具有两个规制板，
    两个所述规制板均沿所述规制框架的长度方向延伸，
    所述活塞主体的两侧具有两个滚动件嵌槽，
    所述一对滚动件分别可滚动地嵌合在所述两个滚动件嵌槽中且分别与对应侧的所述规制板相抵接。
  8. 根据权利要求5所述的撞针驱动机构，其特征在于：
    其中，所述导向杆为圆形杆，
    所述套接通孔为与所述导向杆相匹配的圆形贯通孔。
  9. 根据权利要求5所述的撞针驱动机构，其特征在于：
    其中，所述导向杆为方形杆，
    所述套接通孔为与所述导向杆相匹配的方形贯通孔。
  10. 根据权利要求1所述的撞针驱动机构，其特征在于：
    其中，所述活塞保护件的数量为两个，
    两个所述活塞保护件安装至所述活塞上，形成第一抵推端以及第二抵推端，
    所述第一抵推端从所述活塞沿所述射钉方向延伸出，
    所述第二抵推端从所述活塞垂直于所述第一抵推端且朝向所述推动构件延伸出，
    所述推动构件包括轮体以及设置在所述轮体上且朝向所述活塞的第一推动凸起、第二推动凸起，
    所述第一推动凸起以及所述第二推动凸起为所述推动端，
    所述第一推动凸起与所述第一抵推端的设置相对应，且该第一推动凸起的高度高于所述第二推动凸起，
    所述第二推动凸起与所述第二抵推端的设置相对应，
    所述轮体转动时，所述第二推动凸起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一段蓄能，
    完所所述第一段蓄能后，所述第一推动凸起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二段蓄能。
  11. 根据权利要求10所述的撞针驱动机构，其特征在于，还包括：
    驱动电机，用于驱动所述推动构件转动，带动所述推动端运动，进而推动所述活塞朝向所述供力弹簧运动；以及
    单向轴承，安装在所述驱动电机的输出端，
    其中，所述轮体安装在所述驱动电机的输出端。
  12. 一种射钉枪，其特征在于，至少包括：
    撞针，用于撞击射钉；以及
    撞针驱动机构，用于驱动所述撞针运动，
    其中，所述撞针驱动机构为权利要求1-11中任意一项所述的撞针驱动机构。
  13. 根据权利要求12所述的射钉枪，其特征在于，还包括：
    外壳，包括主体机壳以及撞针挡板，
    其中，所述撞针至少具有安装部，用于将所述撞针可拆卸地安装至所述活塞，
    所述主体机壳具有一个更换开口，该更换开口的位置与所述安装部相对应，
    所述撞针挡板可拆卸地安装在所述更换开口上。
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