Fastener driving device

Abstract

To provide a fastener driving device.SOLUTION: A fastener driving device includes an energy storage unit, an impact unit, a transmitting unit and a driving unit. The energy storage unit has an energy storage state and an energy release state. The impact unit moves in a first direction to drive a fastener into a workpiece. The transmitting unit connects the energy storage unit with the impact unit. The driving unit is capable of cooperating with the impact unit. During a transition of the energy storage unit from the energy release state to the energy storage state, the driving unit drives the impact unit to move in a second direction different from the first direction, the impact unit drives the energy storage unit to store energy through the transmitting unit; during a transition of the energy storage unit from the energy storage state to the energy release state, the energy storage unit releases energy along the second direction to drive the transmitting unit, the transmitting unit drives the impact unit to move along the first direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the field of power tools, and particularly to a fastener driving machine.

Background Art

[0002] Generally, a fastener driving machine includes an energy storage device which contains a spring. The fastener driving machine compresses the spring to store energy, and then quickly releases the spring to do work externally, that is, to realize the function of driving a fastener into a workpiece. Specifically, a conventional fastener driving machine compresses the spring along a first direction to store energy, and then quickly releases the spring along a second direction to drive the fastener into the workpiece along the second direction. In this case, the first direction and the second direction are opposite directions. As described above, a fastener driving machine that stores and releases energy using a spring usually has the drawback of large recoil, that is, the recoil force acting on the main body of the fastener driving machine, especially the handle part, is large, and the reaction force felt by the user is also large.

[0003] Therefore, there is a need to provide a new fastener driving machine.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a fastener driving machine with stable and smooth operation in order to solve the above-mentioned existing problems.

Means for Solving the Problems

[0005] Specifically, the present invention provides a fastener driving machine including the following: An energy storage device having an energy storage state and a release state, An impact device that moves along a first direction and drives a fastener into a workpiece, A transmission device that connects the energy storage device and the impact device, A drive device that can cooperate with the impact device In the process of the energy storage device switching from the released state to the energy storage state, the drive device moves the impact device along a second direction different from the first direction, and the impact device drives the energy storage device through the transmission device to store energy; in the process of the energy storage device switching from the energy storage state to the released state, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device along the first direction.

[0006] Furthermore, the first direction and the second direction are opposite directions.

[0007] Furthermore, when the energy storage device is in the energy storage state, the impact device is at least partially located inside the energy storage device.

[0008] Furthermore, in the process of the energy storage device switching from the released state to the energy storage state, the drive device cooperates with the impact device, and the drive device moves the impact device along the second direction different from the first direction; in the process of the energy storage device switching from the energy storage state to the released state, the drive device releases the cooperation with the impact device, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device along the first direction.

[0009] Furthermore, the transmission device includes a transmission belt, and the transmission belt is connected between the energy storage device and the impact device.

[0010] Furthermore, the transmission device also includes a fixed pulley, and the transmission belt is attached to the fixed pulley. The energy storage device includes a spring, the spring includes a fixed end and a movable end, the movable end is movable relative to the fixed end, the movable end and the impact device are interlocked through the transmission device, and the moving direction of the movable end is different from the moving direction of the impact device.

[0011] Furthermore, the energy storage device includes a spring. The spring includes a fixed end and a movable end. The movable end is movable relative to the fixed end. The movable end moves along the second direction to release energy, and the movable end moves along the first direction to store energy.

[0012] Furthermore, the energy storage device also includes a partition plate and an end cap. The fixed end is fixed to the partition plate. The movable end is accommodated in an accommodation space formed by the end cap, and the end cap moves together with the movable end.

[0013] Furthermore, the transmission device includes a transmission belt. The transmission belt is connected between the end cap and the impact device.

[0014] Furthermore, the fastener driving machine includes a first fixing plate, a second fixing plate, and a fixture. The transmission belt includes a central portion and two end portions located on both sides of the central portion. The central portion includes a main body portion and two connecting portions located on both sides of the main body portion. The connecting portion is connected between the main body portion and the end portion. The connecting portion includes an adjacent first connecting portion and a second connecting portion. The first connecting portion is clamped between the end cap and the first fixing plate. The second connecting portion is clamped between the first fixing plate and the second fixing plate. The end portion is clamped between the main body portion and the second fixing plate. The fixture integrally fixes the end cap, the first fixing plate, and the second fixing plate.

[0015] Furthermore, the driving device includes a first meshing mechanism, the impact device includes a second meshing mechanism, the first meshing mechanism periodically meshes with or disengages from the second meshing mechanism. When the first meshing mechanism meshes with the second meshing mechanism, the driving device moves the impact device along the second direction. When the first meshing mechanism disengages from the second meshing mechanism, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device along the first direction.

[0016] Furthermore, the first meshing mechanism includes an output shaft, a first cam and a second cam. The first cam and the second cam are attached to the output shaft and rotate together with the output shaft. The first cam and the second cam are provided with a displacement along the axial direction of the output shaft. The second meshing mechanism includes a first meshing portion and a second meshing portion. The first cam periodically meshes with or disengages from the first meshing portion during the rotation of the output shaft, and the second cam periodically meshes with or disengages from the second meshing portion during the rotation of the output shaft.

[0017] Furthermore, when the first cam meshes with the first meshing portion, the driving device moves the impact device along the second direction. When the second cam meshes with the second meshing portion, the driving device moves the impact device along the second direction. In one rotation period of the output shaft, the rotation angle of the first cam in the meshed state with the first meshing portion is less than 180°, and the rotation angle of the second cam in the meshed state with the second meshing portion is less than 180°. Furthermore, the impact device includes a punch pin connected to the second meshing mechanism and a driving wheel. The punch pin is used to drive the fastener into the workpiece, and the driving wheel is attached to the second meshing mechanism via a pin. The driving wheel is rotatable around the pin.

[0018] Furthermore, the transmission device includes a transmission belt, and the transmission belt is connected between the energy storage device and the drive wheel.

[0019] Furthermore, the fastener driving machine includes a guide rail, and the impact device moves along the guide rail; the fastener driving machine further includes a first base connected to the guide rail and a first buffer member attached to the first base. After the impact device moves along the first direction and drives the fastener into the workpiece, the impact device collides with the first buffer member. Furthermore, the fastener driving machine includes a guide rail, and the guide rail penetrates the spring and the end cap along the expansion and contraction direction of the spring; the fastener driving machine further includes a second base connected to the guide rail and a second buffer member attached to the second base. After the impact device moves along the first direction and drives the fastener into the workpiece, the end cap collides with the second buffer member.

Advantages of the Invention

[0020] In the present invention, the fastener driving machine includes an energy storage device, a transmission device, an impact device, and a driving device. The energy storage device releases energy along a second direction, and the impact device is moved along a first direction different from the second direction through the transmission device. The impact device moves along the first direction and drives the fastener into the workpiece. The energy release direction (i.e., the second direction) is different from the fastener driving direction (i.e., the first direction). By utilizing the balance of momentum, the recoil of the fastener driving machine is significantly reduced, improving the user experience. Furthermore, in the process of the energy storage device switching from the release state to the energy storage state, the driving device moves the impact device along the second direction, and the impact device drives the energy storage device through the transmission device to store energy. When the energy storage device is in the energy storage state, the impact device is at least partially located inside the energy storage device, and the driving device does not require deviation. Such a design can significantly reduce the uneven load of the driving device and simultaneously shorten the overall length.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0022] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. In the following description, unless otherwise specified, the same numerals in different drawings indicate the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments that conform to the present invention.

[0023] The terms used in the present invention are used only for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless otherwise defined, technical and scientific terms used in the present invention have the ordinary meanings understood by those of ordinary skill in the technical field of the present invention. Terms such as "first" and "second" used in the present invention do not indicate order, quantity, or importance, but are used to distinguish different components. Similarly, terms such as "one" or "a" do not indicate a limitation of quantity, but indicate the presence of at least one. "Plural" or "several" indicate two or more. Unless otherwise specified, terms such as "front", "rear", "lower", and "upper" are used for convenience of explanation and do not limit position or spatial direction. Terms such as "comprising" and "including" include the elements and articles listed after said "comprising" and "including", and corresponding elements and articles, and do not exclude other elements and articles. Terms such as "connected" and "coupled" are not limited to physical or mechanical connections, and may include direct or indirect electrical connections. The singular forms "a", "said", and "this" used in the specification and appended claims of the present invention are intended to include the plural forms unless the context clearly dictates otherwise. Also, the term "and / or" used in this specification means any or all possible combinations of the listed related items.

[0024] Please refer to FIGS. 1 to 8. The present invention provides a fastener driving machine 100, which includes a machine shell 101, an energy storage device 10, an impact device 20, a transmission device 30, and a driving device 40 installed inside the machine shell 101. The transmission device 30 is connected to the energy storage device 10 and the impact device 20. The fastener driving machine 100 further includes a fastener guide plate 50 and a fastener storage clip 60. The fastener storage clip 60 is connected to the fastener guide plate 50, and a fastener (not shown in the figure) is stored in the fastener storage clip 60. The fastener storage clip 60 feeds the fastener toward the fastener guide plate 50. The fastener guide plate 50 serves to guide the fastener, and the fastener is driven into a workpiece by the impact device 20. In the present invention, the fastener is a nail, the fastener guide plate 50 is a guide plate, and the fastener storage clip 60 is a nail clip.

[0025] In the present invention, the impact device 20 moves along a first direction to drive the fastener into the workpiece. The energy storage device 10 has an energy storage state and a release state. In the process of the energy storage device 10 switching from the release state to the energy storage state, the driving device 40 cooperates with the impact device 20. The driving device 40 moves the impact device 20 along a second direction different from the first direction. The impact device 20 drives the energy storage device 10 through the transmission device 30 to store energy. Specifically, the impact device 20 drives the transmission device 30, and the transmission device 30 drives the energy storage device 10 to store energy. In the process of the energy storage device 10 switching from the energy storage state to the release state, the driving device 40 releases the cooperation with the impact device 20. The energy storage device 10 releases energy along the second direction to drive the transmission device 30, and the transmission device 30 moves the impact device 20 along the first direction to drive the fastener into the workpiece. In the present invention, the second direction is opposite to the first direction. The energy storage state indicates the state where the energy storage device 10 has finished storing energy, and the release state indicates the state where the energy storage device 10 has finished releasing energy. When the energy storage device 10 is in the energy storage state, the impact device 20 is at least partially located inside the energy storage device 10. Such a design shortens the overall length of the fastener driving machine 100.

[0026] In the present invention, the energy storage device 10 releases energy along the second direction, and the impact device 20 is moved along the first direction opposite to the second direction through the transmission device 30. The impact device 20 moves along the first direction and drives the fastener into the workpiece. With such a design, the energy release direction (i.e., the second direction) is opposite to the fastener driving direction (i.e., the first direction). By utilizing the balance of momentum, the reaction of the main body of the fastener driving machine 100, particularly the handle part, is significantly reduced, improving the user experience.

[0027] The energy storage device 10 is a medium that stores energy through displacement changes, such as an air spring, a mechanical spring, a rubber element, a vacuum, etc. In the present invention, the energy storage device 10 includes a spring 11, a partition plate 12, and an end cap 13, and the spring 11 is installed between the end cap 13 and the partition plate 12. The partition plate 12 is fixed and installed inside the housing 101. When the energy storage device 10 is in the released state, the partition plate 12 is disposed between the spring 11 and the impact device 20. When the energy storage device 10 is in the energy storage state, the impact device 20 is at least partially located inside the spring 11. The spring 11 includes a fixed end 111 and a movable end 112, and the movable end 112 is movable relative to the fixed end 111. The fixed end 111 of the spring 11 is fixed to the partition plate 12, and the movable end 112 of the spring 11 is accommodated in the accommodation space 130 formed by the end cap 13. Specifically, the end cap 13 includes a cylindrical tube portion 131, the tube portion 131 has the above-mentioned accommodation space 130, and a part of the movable end 112 of the spring 11 is accommodated in the accommodation space 130. The end cap 13 guides the movement of the movable end 112 of the spring 11, and the end cap 13 moves together with the movable end 112 of the spring 11. The movable end 112 of the spring 11 moves along the second direction to release energy, and the movable end 112 of the spring 11 moves along the first direction to store energy. Specifically, in the process of the energy storage device 10 switching from the energy storage state to the released state, the movable end 112 of the spring 11 moves along the second direction to release energy, the spring 11 moves the end cap 13 along the second direction, the end cap 13 drives the transmission device 30, and the transmission device 30 moves the impact device 20 along the first direction. In the process of the energy storage device 10 switching from the released state to the energy storage state, the driving device 40 moves the impact device 20 along the second direction, the impact device 20 drives the transmission device 30, the transmission device 30 moves the end cap 13 along the first direction, and the end cap 13 moves the movable end 112 of the spring 11 along the first direction to store energy. The movable end 112 of the spring 11 and the impact device 20 are interlocked via the transmission device 30, and the moving direction of the movable end 112 of the spring 11 is different from the moving direction of the impact device 20.

[0028] The drive device 40 includes a motor 41, a gear transmission mechanism 42, and a first meshing mechanism 43. The gear transmission mechanism 42 is connected between the motor 41 and the first meshing mechanism 43. The first meshing mechanism 43 includes a rotatable output shaft 430, a first cam 431, and a second cam 432. The first cam 431 and the second cam 432 are attached to the output shaft 430 and rotate together with the output shaft 430. The first cam 431 and the second cam 432 are provided with a displacement along the axial direction of the output shaft 430. The first meshing mechanism 43 further includes a nut 433 and a snap ring 434. The first cam 431 is fixed to the output shaft 430 by the nut 433, and the second cam 432 is fixed to the output shaft 430 by the snap ring 434. The motor 41 provides torque and rotational speed and outputs them through the gear transmission mechanism 42. The gear transmission mechanism 42 reduces the rotational speed and increases the torque at the same time. The gear transmission mechanism 42 includes single-stage or multi-stage planetary gear transmission. In the present invention, the gear transmission mechanism 42 includes three-stage planetary gear transmission. The torque and rotational speed output from the motor 41 are transmitted to the output shaft 430 of the first meshing mechanism 43 through the gear transmission mechanism 42. The output shaft 430 is supported by a bearing 435 and a sleeve 436. The bearing 435, the sleeve 436, and the gear transmission mechanism 42 are all arranged within a gear box. It should be noted that the gear transmission mechanism 42 is not essential. When the torque output from the motor 41 is large enough, the motor shaft can be directly used as the output shaft 430 of the first meshing mechanism 43.

[0029] The impact device 20 includes a second meshing mechanism 23, a push pin 21 connected to the second meshing mechanism 23, and a driving wheel 22. The second meshing mechanism 23 includes a base 230, a first meshing portion 231 and a second meshing portion 232 installed on the base 230. The base 230 is connected to the push pin 21 by a pin, and the two move together. The push pin 21 is used to drive a fastener into a workpiece. The driving wheel 22 is attached to the base 230 via a pin, and the driving wheel 22 is rotatable around the pin. The driving wheel 22 is connected to a transmission device 30 to drive the energy storage of the energy storage device 10. The base 230 can also be designed to be directly connected to the transmission device 30. Therefore, with respect to the overall function, this driving wheel 22 is not essential. In the present invention, by installing the driving wheel 22, the frictional force caused by the force imbalance is reduced. In the present invention, the first meshing portion 231 is a first card shaft, and the second meshing portion 232 is a second card shaft. The first cam 431 meshes with the first meshing portion (first card shaft) 231, and the second cam 432 meshes with the second meshing portion (second card shaft) 232.

[0030] Since the first cam 431 and the second cam 432 are arranged offset along the axial direction of the output shaft 430, the first cam 431 only meshes with the first meshing portion (first card shaft) 231, and the second cam 432 only meshes with the second meshing portion (second card shaft) 232, and the two do not interfere with each other. A first sleeve is attached to the first meshing portion (first card shaft) 231, and a second sleeve is attached to the second meshing portion (second card shaft) 232, which can reduce the frictional force during meshing.

[0031] The transmission device 30 includes a transmission belt 31 and two fixed pulleys 32, the two fixed pulleys 32 are mounted on the machine shell 101, and the transmission belt 31 is mounted on the two fixed pulleys 32. The transmission belt 31 is connected between the driving wheel 22 of the impact device 20 and the end cap 13 of the energy storage device 10. In the present invention, the fixed pulley 32 is a roller, which can rotate around a roller axis, and the roller axis is mounted in the machine shell 101. Thus, the roller serves as a fixed pulley. In the present invention, the transmission belt 31 is a fiber woven belt. In other embodiments, the transmission belt 31 can be a belt, a wire rope, or another fiber woven rope. By providing the transmission device 30, the moving direction of the movable end 112 of the spring 11 and the moving direction of the impact device 20 are opposite to each other.

[0032] The connection method between the transmission belt 31 and the end caps 13 can be designed differently according to the type of the transmission belt 31 used. In the present invention, the transmission belt 31 is an open-type woven belt, which includes a center portion 311 and two end portions 312. The fastener driver 100 further includes a first fixing plate 71, a second fixing plate 72, and a fastener 73. The transmission belt 31 includes a center portion 311 and two end portions 312 located on both sides of the center portion 311, and the center portion 311 includes a main portion 313 and two connecting portions 314 located on both sides of the main portion 313, and the connecting portions 314 are connected between the main portion 313 and the end portions 312. The connecting portion 314 includes a first connecting portion 315 and a second connecting portion 316 arranged adjacent to each other, the first connecting portion 315 is sandwiched between the end cap 13 and the first fixed plate 71, the second connecting portion 316 is sandwiched between the first fixed plate 71 and the second fixed plate 72, the end portion 312 is sandwiched between the main body portion 313 and the second fixed plate 72, and the main body portion 313 is connected to the driving wheel 22 of the impact device 20 beyond the fixed slip ring 32. The fastener 73 fastens the end cap 13, the first fixed plate 71 and the second fixed plate 72 together, and in the present invention, the fastener 73 is a screw.

[0033] Specifically, a labyrinth fixing method is adopted between the transmission belt 31 and the end cap 13. The transmission belt 31 passes through the gap between the first fixing plate 71 and the end cap 13, then through the gap between the second fixing plate 72 and the first fixing plate 71, and finally the end 312 of the transmission belt 31 is arranged between the second fixing plate 72 and the main body 313 of the transmission belt 31. Finally, the first fixing plate 71 and the second fixing plate 72 are fixed to the end cap 13 through the fixture 73 (screw). By the above-mentioned labyrinth fixing method, the contact area between the transmission belt 31 and the fixing parts (i.e., the first fixing plate 71 and the second fixing plate 71) increases. Also, the end 312 of the transmission belt 31 is arranged between the second fixing plate 72 and the main body 313 of the transmission belt 31. When the transmission belt 31 loosens, the end 312 of the transmission belt 31 moves in the second direction, and the main body 313 of the transmission belt 31 moves in the first direction. The moving direction of the main body 313 of the transmission belt 31 is opposite to the moving direction of the end 312 of the transmission belt 31. When the transmission belt 31 is tensioned, a self-locking effect occurs between the main body 313 and the end 312. Therefore, by the above-mentioned labyrinth fixing method, the force required for the transmission belt 31 to loosen is greatly improved. In the case of the open-type transmission belt 31, the end 312 of the transmission belt 31 can also be connected to the impact device 20, and the central part 311 of the transmission belt 31 can be connected to the end cap 13 over the fixed pulley 32. In other embodiments, when using two open-type transmission belts 31, the respective ends 312 are connected to the end cap 13 and the impact device 20. Also, when using a non-open-type annular transmission belt 31, it is only necessary to hang the annular transmission belt 31 on the end cap 13 and connect it to the impact device 20 over the fixed pulley 32.

[0034] The impact device 20 and the spring 11 are arranged along the expansion and contraction direction of the spring 11, and the two fixed pulleys 32 are arranged on both sides of the spring 11 along the third direction. The third direction is perpendicular to the expansion and contraction direction of the spring 11. With this design, when the impact device 20 moves in the second direction, the movable end 112 of the spring 11 of the energy storage device 10 is compressed in the first direction. Spacers 33 are installed on both sides of the fixed pulley 32 respectively to limit the transmission belt 31 and prevent the transmission belt 31 from shifting in the axial direction of the fixed pulley 32.

[0035] The first meshing mechanism 43 periodically meshes with or disengages from the second meshing mechanism 23. When the first meshing mechanism 43 meshes with the second meshing mechanism 23, the driving device 40 moves the impact device 20 in the second direction, the impact device 20 drives the transmission device 30, and the transmission device 30 moves the end cap 13 in the first direction. The end cap 13 moves the movable end 112 of the spring 11 in the first direction to store energy. When the first meshing mechanism 43 disengages from the second meshing mechanism 23, the movable end 112 of the spring 11 moves in the second direction, the movable end 112 of the spring 11 moves the end cap 13 in the second direction, the end cap 13 drives the transmission device 30, and the transmission device 30 moves the impact device 20 in the first direction to drive the fastener into the workpiece. Specifically, the first cam 431 periodically meshes with or disengages from the first meshing portion (first card shaft) 231 as the output shaft 430 rotates, and the second cam 432 periodically meshes with or disengages from the second meshing portion (second card shaft) 232 as the output shaft 430 rotates. When the first cam 431 meshes with the first meshing portion 231, the driving device 40 moves the impact device 20 in the second direction, and when the second cam 432 meshes with the second meshing portion 232, the driving device 40 moves the impact device 20 in the second direction.

[0036] When the output shaft 430 rotates, the first cam 431 first engages with the first engagement portion 231. After the driving device 40 moves the impact device 20 by a certain stroke, the second cam 432 engages with the second engagement portion 232, and immediately afterwards, the first cam 431 disengages from the first engagement portion 231. By engaging the second cam 432 with the second engagement portion 232, the driving device 40 continues to move the impact device 20 until the second cam 432 disengages from the second engagement portion 232. Thereafter, the impact device 20 completes the fastener driving operation under the action of the energy released by the energy storage device 10. The first cam 431 and the second cam 432 have specific shapes, and convert the rotational motion of the first cam 431 and the second cam 432 into the linear motion of the impact device 20. In one rotation cycle of the output shaft 430, the rotation angle of the first cam 431 when engaged with the first engagement portion 231 is less than 180°, and the rotation angle of the second cam 432 when engaged with the second engagement portion 232 is also less than 180°. Therefore, after the second cam 432 disengages from the second engagement portion 232 and for some time after the impact device 20 completes the fastener driving operation, there is time until the first cam 431 engages with the first engagement portion 231 again.

[0037] The fastener driving machine 100 further includes two guide rails 80 installed in parallel. The guide rails 80 are mounted within the housing 101 and have an elongated shape. The impact unit 20 is disposed between the two guide rails 80, and the impact unit 20 moves along the two guide rails 80 to maintain a linear motion of the impact unit 20. The two guide rails 80 pass through the energy storage unit 10. Specifically, the two guide rails 80 penetrate through the end cover 13, the spring 11, and the baffle 12 along the expansion and contraction direction of the spring 11. During the process of the energy storage unit 10 switching from the automatic release state to the energy storage state, the drive unit 40 moves the impact unit 20 along the second direction. When the energy storage unit 10 is in the energy storage state, the impact unit 20 is at least partially located inside the spring 11. With such a design, the overall length of the fastener driving machine 100 can be shortened.

[0038] The fastener driving machine 100 includes a first base 91 connected to one end of two guide rails 80 and a second base 92 connected to the other end of the two guide rails 80. The first base 91 is connected to one end of the two guide rails 80 with screws, and the second base 92 is connected to the other end of the two guide rails 80 with screws. Both the first base 91 and the second base 92 are installed inside the machine housing 101. The fastener driving machine 100 further includes a first buffer member 93 installed in the first base 91 and a second buffer member 94 installed in the second base 92. The fastener guide plate 50 is connected to the first base 91. When the energy storage device 10 releases energy, the movable end 112 of the spring 11 moves the end cap 13 in the second direction, the end cap 13 drives the transmission device 30, and the transmission device 30 moves the impact device 20 in the first direction. The impact device 20 passes through the first base 91 and the first buffer member 93 and drives the fastener in the fastener guide plate 50 into the workpiece. After the impact device 20 moves along the first direction and drives the fastener into the workpiece, the impact device 20 collides with the first buffer member 93, and the end cap 13 collides with the second buffer member 94.

[0039] After the fastener driving operation is completed, there may be residual energy in the impact device 20 and the spring 11. The impact device 20 and the end cap 13 collide with the first and second buffer members 93 and 94 respectively, and this residual energy is absorbed to prevent other components from being damaged. When the output energy is relatively small, the second base 92 and the second buffer member 94 are not essential, the guide rail 80 does not need to pass through the end cap 13, and the residual energy can be absorbed by the transmission device 30 and the first buffer member 93.

[0040] Referring to FIG. 8, the operating principle of the fastener driving machine 100 in the present invention will be described. The states a, b, c, and d in FIG. 8 correspond to one working cycle.

[0041] When the output shaft 430 rotates counterclockwise and reaches the position of state a, the first cam 431 of the first meshing mechanism 43 of the driving device 40 will start meshing with the first meshing portion 231 of the second meshing mechanism 23 of the impact device 20 soon. When the output shaft 430 continues to rotate counterclockwise, the first cam 431 meshes with the first meshing portion 231, and the driving device 40 moves the impact device 20 in the second direction. The impact device 20 applies a force in the second direction to the transmission belt 31. When the transmission belt 31 passes through the fixed pulley 32, a force in the first direction is applied to the movable end 112 of the spring 11 of the energy storage device 10, compressing the spring 11 in the first direction (the movable end 112 of the spring 11 moves in the first direction, the fixed end 111 of the spring 11 is connected to the partition plate 12, and the partition plate 12 is fixed to the machine housing 101). When the output shaft 430 continues to rotate counterclockwise, the second cam 432 of the first meshing mechanism 43 of the driving device 40 meshes with the second meshing portion 232 of the second meshing mechanism 23 of the impact device 20, and the first cam 431 releases its meshing with the first meshing portion 231. As in state b, the driving device 40 continues to move the impact device 20 in the second direction, and the impact device 20 applies a force in the first direction to the movable end 112 of the spring 11 of the energy storage device 10 through the transmission device 30, further compressing the spring 11 in the first direction. When the output shaft 430 continues to rotate counterclockwise, the second cam 432 meshes with the second meshing portion 232, and the driving device 40 moves the impact device 20 to the top dead center. As in state c, the impact device 20 compresses the spring 11 in the first direction through the transmission device 30 to store energy. When the output shaft 430 continues to rotate counterclockwise, the second cam 432 releases its meshing with the second meshing portion 232, the spring 11 extends in the second direction, applies a force in the second direction to the transmission belt 31. When the transmission belt 31 passes through the fixed pulley 32, a force in the first direction is applied to the impact device 20, and the impact device 20 moves in the first direction to complete the fastener driving operation. After the fastener driving operation is completed, the impact device 20 collides with the first buffer member 93, and the end cap 13 connected to the movable end 112 of the spring 11 collides with the second buffer member 94. The first buffer member 93 absorbs the residual energy of the impact device 20, and the second buffer member 94 absorbs the residual energy of the energy storage device 10.Like in state d, the output shaft 430 continues to rotate counterclockwise. After rotating a certain angle, the first cam 431 of the first meshing mechanism 43 of the driving device 40 meshes with the first meshing part 231 of the second meshing mechanism 23 of the impact device 20 again and returns to state a.

[0042] When the impact device 20 moves in the second direction, the transmission belt 31 receives a force in the second direction, passes through the fixed pulley 32, and applies a force in the first direction to the movable end 112 of the spring 11, compressing the movable end 112 of the spring 11 in the first direction. Similarly, after the first meshing mechanism 43 of the driving device 40 and the second meshing mechanism 23 of the impact device 20 are disengaged, the movable end 112 of the spring 11 is released in the second direction. The transmission belt 31 receives a force in the second direction, passes through the fixed pulley 32, and applies a force in the first direction to the impact device 20, causing the impact device 20 to move in the first direction to complete the operation of driving in the fastener. That is, when the impact device 20 performs the operation of driving in the fastener, the end cap 13 connected to the movable end 112 of the spring 11 moves in the opposite direction. Based on the principle of the balance of momentum, the reaction momentum acting on the machine body, especially the handle part, is significantly reduced, and the reaction force felt by the user is also significantly reduced.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to impose any form of limitation on the present invention. Although the present invention is disclosed based on the preferred embodiment, this does not limit the present invention. Those skilled in the art can make some changes and modifications based on the above disclosure without departing from the technical scope of the present invention and can create equivalent embodiments with equivalent changes. The content based on the technical scope of the present invention shall include simple changes, equivalent changes, and modifications to the above embodiments based on the technical essence of the present invention.

Description of Reference Numerals

[0044] 100 Fastener driving machine 101 Machine housing 10 Energy storage device 11 Spring 111 Fixed end 112 Movable end 12 Partition plate 13 End cap 130 Accommodation space 131 Cylindrical part 20 Impact device 21 Poking needle 22 Driving wheel 23 Second meshing mechanism 230 Base 231 First meshing part (first card shaft) 232 Second meshing part (second card shaft) 30 Transmission device 31 Transmission belt 311 Central part 312 End part 313 Main body part 314 Connecting part 315 First connecting part 316 Second connecting part 32 Fixed pulley 33 Spacer 40 Driving device 41 Motor 42 Gear transmission mechanism 43 First meshing mechanism 430 Output shaft 431 First cam 432 Second cam 433 Nut 434 Snap ring 435 Bearing 436 Sleeve 50 Fastener guide plate 60 Fastener storage clip 71 First fixing plate 72 Second fixing plate 73 Fixture (screw) 80 Guide rail 91 First base 92 Second base 93 First buffer member 94 Second buffer member

Claims

1. the energy storage device has an energy storage state and a release state; The impact device moves along a first direction to drive the fastener into the workpiece; a transmission device connecting the energy storage device and the impact device; a drive device operable to cooperate with said impact device; In a process in which the energy storage device switches from a release state to an energy storage state, the driving device moves the impact device in a second direction different from the first direction, and the impact device drives the energy storage device via the transmission device to store energy; In a process in which the energy storage device switches from a stored energy state to a released energy state, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device in the first direction.

2. 2. The fastener driver according to claim 1, wherein the first direction and the second direction are opposite directions.

3. 2. The fastener driving tool of claim 1, wherein the impact device is at least partially located within the energy storage device when the energy storage device is in the energy storage state.

4. In a process in which the energy storage device switches from a release state to an energy storage state, the driving device cooperates with the impact device, and the driving device moves the impact device in the second direction different from the first direction; 2. The fastener driving tool according to claim 1, wherein, during the process in which the energy storage device switches from the stored energy state to the released energy state, the driving device releases cooperation with the impact device, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device in the first direction.

5. the transmission device includes a transmission belt; The transmission belt is connected between the energy storage device and the impact device, The transmission device includes a fixed pulley; The transmission belt is attached to the fixed pulley, the energy storage device includes a spring; The spring includes a fixed end and a movable end. The movable end is movable relative to the fixed end, The movable end and the impact device are linked via the transmission device; 2. The fastener driver according to claim 1, wherein the moving direction of the movable end is different from the moving direction of the impact device.

6. the energy storage device includes a spring; The spring includes a fixed end and a movable end. The movable end is movable relative to the fixed end, the movable end moves along the second direction to release energy; The fastener driver according to claim 1 , wherein the movable end moves along the first direction to store energy.

7. The energy storage device includes a partition plate and an end cap; The fixed end is fixed to the partition plate, The movable end is accommodated within an accommodation space formed by the end cap, the end cap moves with the movable end; the transmission device includes a transmission belt; 7. The fastener driver of claim 6, wherein the transmission belt is connected between the end cap and the impact device.

8. The fastener driving tool further includes a first fastening plate, a second fastening plate and a fastener, the transmission belt includes a central portion and two end portions located on either side of the central portion; The central portion includes a main body portion and two connecting portions located on both sides of the main body portion, The coupling portion is connected between the body portion and the end portion, The connecting portion includes a first connecting portion and a second connecting portion arranged adjacent to each other, The first connecting portion is sandwiched between the end cap and the first fixing plate, The second connecting portion is sandwiched between the first fixing plate and the second fixing plate, The end portion is sandwiched between the main body portion and the second fixing plate, The fastener driving tool of claim 7 , wherein the fastener fastens the end cap, the first fastening plate and the second fastening plate together.

9. The drive device includes a first engagement mechanism; the impact device includes a second engagement mechanism; the first interlocking mechanism periodically interlocks and disengages with the second interlocking mechanism; When the first meshing mechanism meshes with the second meshing mechanism, the drive device moves the impact device in a second direction; 2. The fastener driving tool according to claim 1, wherein when the first engagement mechanism disengages from the second engagement mechanism, the energy storage device releases energy along the second direction to drive the transmission device, and the transmission device moves the impact device in the first direction.

10. the first meshing mechanism includes an output shaft, a first cam and a second cam; the first cam and the second cam are both attached to the output shaft and rotate together with the output shaft, The first cam and the second cam are provided so as to be shifted in position along the axial direction of the output shaft, The second engagement mechanism includes a first engagement portion and a second engagement portion, The first cam periodically engages or disengages from the first meshing portion during a rotation process of the output shaft, The fastener driving tool according to claim 9 , wherein the second cam periodically engages with or disengages from the second engagement portion during a rotation process of the output shaft.

11. When the first cam engages with the first engaging portion, the driving device moves the impact device in a second direction, When the second cam engages with the second engaging portion, the driving device moves the impact device in a second direction, In one rotation cycle of the output shaft, a rotation angle in a state in which the first cam meshes with the first meshing portion is less than 180°, The fastener driving tool according to claim 10, wherein a rotation angle of the second cam when engaged with the second engaging portion is less than 180°.

12. the impact device includes a drive pin and a drive wheel connected to the second engagement mechanism; The driving needle is used to drive the fastener into the workpiece, The drive wheel is attached to the second meshing mechanism via a pin, The drive wheel is rotatable about the pin; the transmission device includes a transmission belt; 10. The fastener driving tool according to claim 9, wherein the transmission belt is connected between the energy storage device and the drive wheel.

13. The fastener driver further includes a guide rail. The impact device moves along the guide rail, The fastener driver further includes a first base connected to the guide rail and a first buffer member attached to the first base, 2. The fastener driving tool according to claim 1, wherein the impact device collides with the first buffer member after the impact device moves along the first direction to drive the fastener into the workpiece.

14. The fastener driver further includes a guide rail. the guide rail passes through the spring and the end cap along a direction in which the spring expands and contracts; The fastener driver further includes a second base connected to the guide rail and a second buffer member attached to the second base, 8. The fastener driving tool according to claim 7, wherein the end cap collides with the second buffer member after the impact device moves along the first direction to drive the fastener into the workpiece.

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