Fastener driver

Abstract

This application discloses a fastener actuator, which includes a housing comprising a main body and a handle for user gripping; an impactor for driving a fastener into a working surface; a motor; a transmission mechanism connected to the output end of the motor; and an energy storage assembly configured to store driving energy and drive the impactor upon release. The motor is housed within the handle; the motor's diameter D is less than or equal to 38 mm; and the energy E generated by the energy storage assembly and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J. This application enables a reduction in the size of the fastener actuator, improving its compactness and thus meeting the needs of use in confined spaces.

Description

Technical Field

[0001] This application relates to a power tool, specifically a fastener driver. Background Technology

[0002] In daily production and life, fasteners are sometimes needed to connect or fix objects. Manual hammering is labor-intensive and inefficient. Therefore, nail guns are commonly used to drive fasteners into objects such as wood. A nail gun acts as a fastener actuator, quickly driving fasteners into materials like wood. Compressed air-driven nail guns use a compressed air cylinder; the thrust generated by the extended piston rod acts as the driving force on the impact element, driving the fastener into the working surface. Mechanical spring-driven nail guns use an impact spring (compression spring); the spring's restoring force acts as the driving force on the impact element, driving the fastener into the working surface.

[0003] Fastener drives sometimes need to be used in confined spaces during operation. However, existing fastener drives are too large to meet the needs of use in such spaces.

[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0005] One objective of this application is to solve or at least mitigate some or all of the aforementioned problems by reducing the size of the fastener driver and improving its compactness, thereby meeting the needs of use in confined spaces.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A fastener driver includes: a housing comprising a main body and a handle for a user to grip; an impactor for driving a fastener into a working surface; a motor; a transmission mechanism connected to the output of the motor; and an energy storage assembly configured to store driving energy and drive the impactor upon release; wherein the motor is disposed within the handle; the diameter D of the motor is less than or equal to 38 mm; and the energy E generated by the energy storage assembly and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J.

[0008] In some embodiments, the width W1 of the main body is less than or equal to 55 mm, and the width of the main body is defined as the dimension in the Y-axis direction in the fastener drive coordinate system.

[0009] In some embodiments, the total weight M1 of the fastener driver is less than or equal to 1.7 kg.

[0010] In some embodiments, an impact assembly is also included, comprising a piston for securing the impacting member, the weight of the impact assembly M2 being less than or equal to 50g.

[0011] In some embodiments, E / W1 is greater than or equal to 0.21 J / mm.

[0012] In some embodiments, E / M1 is greater than or equal to 7 J / kg.

[0013] In some embodiments, E / M2 is greater than or equal to 0.24 J / g.

[0014] In some embodiments, E / W1 is greater than or equal to 0.26 J / mm.

[0015] In some embodiments, the energy storage assembly includes a spring and a cylinder, one end of the spring is fixed to the piston, the cylinder is sleeved on the spring, the inner wall surface of one end of the cylinder is connected to the outer peripheral surface of the piston, and the inner wall surface of the other end of the cylinder abuts against the spring.

[0016] In some embodiments, the distance L1 from the central axis of the spring to the main body is less than or equal to 25 mm.

[0017] In some embodiments, a magazine is also included, the magazine being configured to receive a fastener, wherein the nearest distance L2 from the center of gravity G of the fastener driver to the magazine is greater than or equal to 60 mm.

[0018] In some embodiments, the handle is provided with an air inlet.

[0019] In some embodiments, the area of ​​the air inlet is greater than or equal to 50 mm². 2 .

[0020] In some embodiments, the motor is a brushless motor.

[0021] A fastener driver includes: a housing including a body portion and a handle portion for a user to grip; an impact member for driving a fastener into a working surface; a motor; a transmission mechanism connected to the output end of the motor; and an energy storage assembly configured to store driving energy and drive the impact member upon release; wherein the width W of the body portion is less than or equal to 55 mm, and the width of the body portion is defined as the dimension in the Y-axis direction in the fastener driving coordinate system; and the energy E generated by the energy storage assembly and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J.

[0022] In some embodiments, the motor is housed within the handle.

[0023] A fastener driver includes: a housing including a main body and a handle for a user to hold; an impactor for driving a fastener into a working surface; a motor; a transmission mechanism connected to the output of the motor; and an energy storage assembly configured to store driving energy and drive the impactor upon release; wherein the total weight M1 of the fastener driver is less than or equal to 1.7 kg; and the energy E generated by the energy storage assembly and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J.

[0024] In some embodiments, the motor is housed within the handle.

[0025] A fastener actuator includes: a housing including a body portion and a handle portion for a user to grip; an impact member for driving a fastener into a working surface; an impact assembly including a piston for securing the impact member; a motor; a transmission mechanism connected to the output end of the motor; and an energy storage assembly configured to store driving energy and drive the impact member upon release; wherein the energy E generated by the energy storage assembly and transmitted to the fastener to drive it into the working surface is greater than or equal to 12J; and the weight M2 of the impact assembly is less than or equal to 50g.

[0026] In some embodiments, the motor is housed within the handle.

[0027] The advantages of this application are:

[0028] This application provides a fastener actuator, the housing of which includes a main body and a handle for user gripping. A motor is connected to a transmission mechanism, and an energy storage component stores driving energy and, upon release, drives an impactor to strike the fastener, thereby propelling it into the working surface. By arranging the motor within the handle, and ensuring the motor diameter D is less than or equal to 38mm, the space within the handle is fully utilized, reducing the space occupied by the motor and thus decreasing the size of the fastener actuator, improving its compactness and meeting the needs of use in confined spaces. Furthermore, due to the smaller motor diameter, it occupies less radial space, reducing the circumferential dimensions of the handle and facilitating user gripping. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of one embodiment of this application;

[0030] Figure 2 This is a schematic diagram of one embodiment of the present application with half of the shell removed;

[0031] Figure 3 This is a schematic diagram of removing the shell in one embodiment of this application;

[0032] Figure 4 This is a top view of one embodiment of this application;

[0033] Figure 5 This is a cross-sectional view of the energy storage component and the impact component in one embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the transmission mechanism in one embodiment of this application;

[0035] Figure 7 This is a schematic diagram of another transmission mechanism in one embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the front shell in one embodiment of this application;

[0037] Figure 9 This is a schematic diagram of the configuration of collision blocks in one embodiment of this application;

[0038] Figure 10 This is a cross-sectional view of the configuration of the collision block in one embodiment of this application;

[0039] Figure 11 This is a schematic diagram of a fixed pulley configured in one embodiment of this application;

[0040] Figure 12 This is a schematic diagram of the configuration of the counterweight block in one embodiment of this application.

[0041] In the picture:

[0042] 100. Fastener Actuator; 110. Main Switch; 120. Magazine; 1. Housing; 11. Main Body; 12. Handle; 121. Centerline; 13. Air Inlet; 14. Counterweight; 2. Impact Component; 3. Motor; 31. Gearbox; 32. Power Output Gear; 4. Transmission Mechanism; 41. Primary Gear; 42. Secondary Drive Gear; 43. Secondary Driven Gear; 44. Drive Gear; 45. Drive Wheel; 46. Drive Synchronous Belt Pulley; 47. 48. Synchronous belt; 5. Driven synchronous belt pulley; 6. Energy storage assembly; 7. Cylinder block; 8. Spring; 9. Central axis; 10. Impact assembly; 11. Piston; 12. Front housing; 13. Laser lamp; 14. Lifting mechanism; 15. Guide rod; 16. Impact block; 17. Paddle; 18. Energy storage spring; 19. Axis; 20. Collision block; 21. Strip groove; 22. Fixed pulley; 33. First connecting rod; 44. Second connecting rod; 55. Buffer spring. Detailed Implementation

[0043] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0044] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0046] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0047] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0048] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0049] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0050] Handheld power tools play a vital role in daily life and production. These tools include, but are not limited to, electric drills, impact drills, impact wrenches, impact screwdrivers, angle grinders, nail guns, and fastener actuators. Electric drills and impact drills can be configured with different diameter drill bits to drill holes in objects. Impact wrenches are used to tighten bolts and nuts, impact screwdrivers are typically used to loosen or tighten screws, and angle grinders can be used for grinding and cutting. Using handheld power tools can improve work efficiency and reduce labor intensity.

[0051] like Figure 1 A fastener driver 100 according to one embodiment of this application is shown. The fastener driver 100 is used to drive a fastener into a working surface. For example, the fastener can be a flathead nail or a U-shaped nail. The fastener driver 100 drives the fastener to quickly drive into the working surface, thereby securing the working surface to a platform on the back side of the working surface. In this embodiment, the fastener driver 100 is, for example, a nail gun. Optionally, the fastener driver 100 includes a mechanically spring-type nail gun that utilizes the force of a compressed coil spring as an impact force (e.g., driving force).

[0052] The fastener driver 100 is powered by a rechargeable battery pack. In some embodiments, the battery pack is a battery module that, in conjunction with a corresponding power supply circuit, powers the fastener driver 100. Those skilled in the art will understand that in other embodiments, the fastener driver 100 may also be powered by other power supply devices. For example, the power supply may be an AC power line connected to mains power, or it may be other connecting cables that can be connected to a power supply device. Mains power or other power supply devices, in conjunction with corresponding rectification, filtering, and voltage regulation circuits, power the corresponding components of the fastener driver 100. The term "battery pack" will be used hereinafter to refer to a power supply, but this should not be construed as a limitation of this application.

[0053] During the operation of the fastener driver 100, it is sometimes necessary to use it in confined spaces. However, existing fastener drivers 100 are too large to fit into such spaces. To solve this problem, such as Figures 1-6 As shown, this application provides a fastener driver 100. The fastener driver 100 includes a housing 1, an impact member 2, a motor 3, a transmission mechanism 4, and an energy storage assembly 5.

[0054] The housing 1 includes a main body 11 and a handle 12 for user gripping. A motor 3 is disposed within the handle 12, and the diameter D of the motor 3 is less than or equal to 38 mm. An impact member 2 drives the fastener into the working surface. A transmission mechanism 4 is connected to the output end of the motor 3. An energy storage assembly 5 is configured to store driving energy and drive the impact member 2 upon release. The energy E generated by the energy storage assembly 5 and transmitted to the fastener to drive its impact into the working surface is greater than or equal to 12 J. Exemplarily, the diameter D of the motor 3 can be 37 mm, 36 mm, 35 mm, 34 mm, 33 mm, 32 mm, 31 mm, 30 mm…; the energy E generated by the energy storage assembly 5 and transmitted to the fastener to drive its impact into the working surface can be 13 J, 14 J, 15 J, 16 J, 17 J, 18 J, 19 J, 20 J, 21 J, 22 J, 23 J… Figure 1 In the diagram, the X-axis is the height direction of the fastener driver 100; the Y-axis is the width direction of the fastener driver 100; and the Z-axis is the length direction of the fastener driver 100.

[0055] By arranging the motor 3 within the handle portion 12, and ensuring that the diameter D of the motor 3 is less than or equal to 38mm, the space within the handle portion 12 can be fully utilized, reducing the space occupied by the motor 3. This reduces the size of the fastener actuator 100, improving its compactness and meeting the needs of use in confined spaces. Furthermore, arranging the motor 3 within the handle portion 12 shifts the center of gravity of the fastener actuator 100 closer to the handle portion 12, resulting in less hand strain and a more comfortable operating experience when the user holds the fastener actuator 100 at different angles. The smaller diameter of the motor 3 also reduces its radial footprint, allowing for a smaller circumferential dimension of the handle portion 12, facilitating grip and improving user comfort. The energy E generated and transferred by the energy storage component 5 to the fastener to drive it into the working surface is not less than 12J. This ensures that the fastener actuator 100 achieves a miniaturized and compact design while maintaining sufficient impact energy, thus guaranteeing work efficiency.

[0056] In some embodiments, the output power of motor 3 is less than or equal to 500W. For example, the output power of motor 3 can be 480W, 470W, 460W, 450W, 4400W, 350W, 300W, 280W, 250W, etc. Since the output power of motor 3 is positively correlated with its size, while ensuring that the output power of motor 3 can effectively drive the fastener into the working surface, a reasonable design of the output power of motor 3 can make its size more compact, reducing the space occupied by motor 3, thereby ensuring the compact structure of the fastener driver 100 and achieving a miniaturized and lightweight design.

[0057] like Figure 3 As shown, in some embodiments, the width W2 of the handle 12 is less than or equal to 45mm. Optionally, the width W2 of the handle 12 can be 44mm, 43mm, 42mm, 41mm, 40mm, 39mm, 38mm, etc. During design, the width W2 of the handle 12 is ensured to match the diameter of the motor 3, thereby effectively mounting and fixing the motor 3. By limiting the width W2 of the handle 12, the circumferential dimensions of the handle 12 are made more compact, making it easier for the user to grip. To prevent the user's hand from slipping during use, an anti-slip structure is provided on the outer circumferential surface of the handle 12. The anti-slip structure can be an anti-slip protrusion, an anti-slip groove, and / or an anti-slip texture. By providing an anti-slip structure, the friction between the user's hand and the handle 12 can be increased, thereby ensuring that the user can hold the handle 12 stably, facilitating smooth nailing operations. In other embodiments, an anti-slip layer can also be provided on the outer side of the handle 12. The anti-slip layer can be made of rubber or silicone, which can also increase the coefficient of friction, ensuring anti-slip while improving the grip feel when the user holds the handle 12.

[0058] like Figure 4 As shown, in some embodiments, the width W1 of the main body 11 is less than or equal to 55 mm, and the width of the main body 11 is defined as the dimension in the Y-axis direction in the fastener drive coordinate system. For example, the width W1 of the main body 11 can be 54 mm, 53 mm, 52 mm, 51 mm, 50 mm, 49 mm, 48 mm, 47 mm, etc. By limiting the width of the main body 11, the compactness of the fastener driver 100 can be further improved, while saving materials and reducing the weight of the fastener driver 100. Note that the width of the main body 11 does not include the width of the battery pack mounting portion.

[0059] In some embodiments, the total weight M1 of the fastener driver 100 is less than or equal to 1.7 kg. Exemplarily, the total weight M1 of the fastener driver 100 can be 1.65 kg, 1.60 kg, 1.55 kg, 1.50 kg, 1.45 kg, 1.40 kg, 1.35 kg, 1.30 kg, etc. By implementing a compact and miniaturized design for the fastener driver 100, its weight is reduced. This ensures the fastener driver 100 can effectively perform nailing operations while reducing the overall weight, thus making it easier for users to use and reducing their workload.

[0060] like Figure 5 As shown, in some embodiments, the fastener driver 100 further includes an impact component 6, which includes a piston 61 for securing the striking member 2. The weight M2 of the impact component 6 is less than or equal to 50g. Exemplarily, the weight M2 of the impact component 6 can be 49g, 48g, 47g, 46g, 45g, 44g, 43g, 42g, 41g, 40g, etc. By reducing the weight of the impact component 6, the overall weight of the fastener driver 100 can be further reduced, making it easier for the user to operate it by hand.

[0061] like Figure 5 As shown, in some embodiments, the energy storage assembly 5 includes a spring 52 and a cylinder 51. One end of the spring 52 is fixed to the piston 61, and the cylinder 51 is sleeved on the spring 52. The inner wall surface of one end of the cylinder 51 is connected to the outer peripheral surface of the piston 61, and the inner wall surface of the other end of the cylinder 51 abuts against the spring 52. When the fastener driver 100 is working, the motor 3 drives the striking member 2 fixed on the piston 61 through the transmission mechanism 4, thereby causing the piston 61 to move and compress the spring 52 until the spring 52 is compressed to its position. Afterward, the transmission mechanism 4 disengages from the striking member 2, and under the action of the elastic force of the spring 52, the piston 61 is ejected. The piston 61 drives the striking member 2 to move and drive the fastener into the working surface. By setting the cylinder 51, the movement of the piston 61 can be guided, thereby ensuring that the spring 52 is compressed smoothly and that the striking member 2 moves along a set trajectory to strike the fastener. Furthermore, the cylinder 51 can limit the compression deformation of the spring 52, ensuring that the spring 52 can only be compressed along its own axial direction, eliminating radial deformation, and guaranteeing that the spring 52 can smoothly store energy under the drive of the piston 61. In this embodiment, the piston 61 can be a lightweight metal part, lightweight silicone, lightweight plastic, or other material. This structure ensures structural simplicity while reducing weight, thereby further reducing the weight of the fastener driver 100.

[0062] In some embodiments, E / W1 is greater than or equal to 0.21 J / mm. Exemplarily, E / W1 can be 0.215 J / mm, 0.22 J / mm, 0.225 J / mm, 0.23 J / mm, 0.235 J / mm, 0.24 J / mm, 0.245 J / mm, 0.25 J / mm, and so on. The energy E generated and transmitted to the fastener by the energy storage component 5 to drive it into the working surface determines the striking force of the striking element 2 on the fastener, thereby determining the depth to which the striking element 2 penetrates the working surface; the width W1 of the main body 11 affects the overall size of the fastener driver 100. Through the above limitations, while ensuring a small width of the main body 11 of the fastener driver 100, a large energy output is guaranteed, thereby ensuring the overall working performance of the machine. This allows the fastener driver 100 to operate efficiently in confined spaces, ensuring nail-driving efficiency.

[0063] In some embodiments, E / M1 is greater than or equal to 7 J / kg. Exemplarily, E / M1 can be 7.1 J / kg, 7.2 J / kg, 7.3 J / kg, 7.4 J / kg, 7.5 J / kg, 7.6 J / kg, 7.7 J / kg, 7.8 J / kg, 7.9 J / kg, and so on. The overall weight M1 of the fastener driver 100 is influenced by the overall materials and dimensions. By limiting the ratio between the energy E generated and transferred to the fastener by the energy storage component 5 to drive it into the working surface and the overall weight M1 of the fastener driver 100, the fastener driver 100 achieves high energy output with a lighter overall weight. This reduces the weight held by the user, reducing labor intensity while ensuring that nailing efficiency and nailing quality meet requirements.

[0064] In some embodiments, E / M2 is greater than or equal to 0.24 J / g. Exemplarily, E / M2 can be 0.25 J / g, 0.26 J / g, 0.27 J / g, 0.28 J / g, 0.29 J / g, 0.30 J / g, 0.31 J / g, 0.32 J / g, 0.33 J / g, etc. The weight M2 of the impact component 6 is positively correlated with the energy acting on the fastener through the impact member 2. By limiting the ratio between the energy E generated by the energy storage component 5 and transferred to the fastener to drive it into the working surface and the weight M2 of the impact component 6, the fastener actuator 100 achieves high energy output with a relatively light impact component 6. By reducing the weight of the impact component 6, the weight of the fastener actuator 100 can be further reduced, achieving a lightweight design.

[0065] In some embodiments, E / W1 is greater than or equal to 0.26 J / mm. Exemplarily, E / W1 can be 0.27 J / mm, 0.28 J / mm, 0.29 J / mm, 0.30 J / mm, 0.31 J / mm, 0.32 J / mm, 0.33 J / mm, 0.34 J / mm, 0.35 J / mm, and so on. Through the above settings, while ensuring a small width of the main body 11 of the fastener driver 100, a larger energy output is further guaranteed, thereby further improving the overall performance of the device and facilitating its use in confined spaces.

[0066] like Figure 3 As shown, in some embodiments, the distance L1 from the central axis 521 of the spring 52 to the main body 11 is less than or equal to 25 mm. Exemplarily, the distance L1 from the central axis 521 of the spring 52 to the main body 11 can be 24 mm, 23 mm, 22 mm, 21 mm, 20 mm, 19 mm, 18 mm, etc. Since the spring 52 is located inside the cylinder 51, the distance from the central axis 521 of the spring 52 to the main body 11 encompasses the thickness of both the cylinder 51 and the main body 11. The smaller distance L1 from the central axis 521 of the spring 52 to the main body 11 makes the overall structure of the fastener driver 100 more compact and reduces visual obstruction at the top of the fastener driver 100, improving visibility. Even when used in confined spaces, it remains easy for the user to observe the working area.

[0067] like Figure 1 As shown, in some embodiments, the fastener driver 100 further includes a magazine 120, which is configured to accommodate fasteners. The nearest distance L2 from the center of gravity G of the fastener driver 100 to the magazine 120 is greater than or equal to 60 mm. Exemplarily, the nearest distance L2 from the center of gravity G of the fastener driver 100 to the magazine 120 can be 61 mm, 62 mm, 63 mm, 64 mm, 65 mm, 66 mm, 67 mm, 68 mm, 69 mm, 70 mm, etc. The fasteners are stored in the magazine 120, and during operation of the fastener driver 100, the fasteners in the magazine 120 are automatically supplied to ensure continuous nailing. The magazine 120 is typically located at the end of the fastener driver 100 where the striking element 2 is located. A larger nearest distance L2 from the center of gravity G of the fastener driver 100 to the magazine 120 indicates that the center of gravity G of the fastener driver 100 is closer to the handle 12. By arranging the center of gravity G of the fastener driver 100 closer to the handle 12, the torque required for the user to hold the fastener driver 100 can be reduced, thereby improving the force distribution on the user's hand and making it easier for the user to hold and use. Furthermore, it provides a larger operating area for the user's hand, facilitating operation.

[0068] In existing technologies, mainstream fastener actuators, whether pneumatic or spring-driven, place the motor and gearbox in the front area of ​​the handle, close to the magazine. This leads to the following two problems:

[0069] 1) The center of gravity of the fastener actuator is located in the area where the motor and gearbox are situated. This results in the user experiencing greater torque on their wrist when using the handheld fastener actuator, leading to a poor user experience. 2) Due to the significant space occupied by the motor and gearbox, the overall size of the fastener actuator is relatively large, making it unsuitable for use in confined spaces. Figure 1 As shown, to solve the above problems, in some embodiments, the motor 3 and the gearbox 31 for transmission are arranged in the handle portion 12, so that the center of gravity of the fastener driver 100 is located in the handle portion 12, which facilitates user grip and operation and improves the user experience. Specifically, the distance L3 between the center of gravity G of the fastener driver 100 and the center line 121 of the handle portion 12 in the direction of movement of the striking member 2 is less than or equal to 40mm. For example, the distance L3 between the center of gravity G of the fastener driver 100 and the center line 121 of the handle portion 12 can be 39mm, 38mm, 37mm, 36mm, 35mm, 34mm, 33mm, 32mm, 31mm, 30mm, etc. Since the motor 3 and gearbox 31 are relatively heavy, their positions determine the center of gravity distribution of the fastener driver 100. By arranging the motor 3 and gearbox 31 reasonably, the center of gravity of the fastener driver 100 is brought closer to the handle 12, thereby shortening the torque from the user's hand to the center of gravity of the fastener driver 100. This reduces the force on the user's wrist when holding the fastener driver 100 and improves the user experience.

[0070] By arranging the motor 3 and gearbox 31 within the handle 12 of the fastener driver 100, the problem of the fastener driver 100 being bulky and large is solved. However, since the output end of the motor 3 and the drive wheel 45 of the transmission mechanism 4 are not on the same axis, the problem of torque transmission needs to be addressed. Figure 6As shown, in some embodiments, to ensure that the drive wheel 45 of the transmission mechanism 4 can effectively mesh with the teeth on the striking member 2, thereby driving the piston 61 to compress the spring 52 in a linear motion, the transmission mechanism 4 adopts a gear transmission form. The transmission mechanism 4 includes a primary gear 41, a secondary driving gear 42, a secondary driven gear 43, a drive gear 44, and a drive wheel 45. The primary gear 41, secondary driving gear 42, secondary driven gear 43, drive gear 44, and drive wheel 45 are all rotatably mounted in the housing 1. The primary gear 41 meshes with the power output gear 32 of the gearbox 31 of the motor 3 and the secondary driving gear 42. The secondary driving gear 42 and the secondary driven gear 43 are coaxially fixed to form a double gear. The secondary driven gear 43 meshes with the drive gear 44. The drive gear 44 and the drive wheel 45 are coaxially fixed to each other. The drive wheel 45 is an incomplete gear, and the striking member 2, similar to a rack, has teeth that mesh with the drive wheel 45. During the compression and nailing process, the drive wheel 45 meshes with the striking member 2. The power of the motor 3 is transmitted to the first-stage gear 41 through the gearbox 31 and the power output gear 32. The first-stage gear 41 then transmits the power to the drive gear 44 through the second-stage drive gear 42 and the second-stage driven gear 43. The drive gear 44 drives the drive wheel 45 to engage with the striking member 2. When the drive wheel 45 meshes with the striking member 2, it drives the striking member 2 to push the piston 61 to compress the spring 52 for energy storage. When the drive wheel 45 disengages from the striking member 2, the striking member 2 is ejected along the nailing channel under the elastic restoring force of the spring 52, thereby driving the fastener into the working surface. The parallel arrangement of the second-stage drive gear 42 and the second-stage driven gear 43, as well as the parallel arrangement of the drive gear 44 and the drive wheel 45, saves installation space, thus ensuring the compact structure of the fastener driver 100. Moreover, the gear transmission method ensures efficient and stable power transmission, guarantees transmission efficiency, and has a long service life.

[0071] like Figure 6As shown, in some embodiments, the transmission mechanism 4 is designed as a gear transmission, with the drive wheel 45 located in front of the fastener driver 100 and close to the magazine 120. The distance L4 between the center of the power output gear 32 of the gearbox 31 of the motor 3 and the center of the drive wheel 45 in the Z-axis direction is greater than or equal to 50 mm and less than or equal to 70 mm. Here, the Z-axis direction refers to the direction of movement of the striking member 2. For example, L4 can be 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm, etc. The distance L5 between the center of the power output gear 32 of the gearbox 31 and the center of the drive wheel 45 in the X-axis direction is greater than or equal to 10 mm and less than or equal to 20 mm, where the X-axis direction is the height direction of the fastener driver 100. For example, the distance L5 between the center of the power output gear 32 of the gearbox 31 and the center of the drive wheel 45 in the X-axis direction can be 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, or 19 mm. By limiting the distance L4 between the center of the power output gear 32 and the center of the drive wheel 45 in the Z-axis direction and the distance L5 between the center of the power output gear 32 and the center of the drive wheel 45 in the X-axis direction, stable power transmission is ensured while the space occupied by the transmission mechanism 4 is small, thus ensuring the compactness of the fastener driver 100.

[0072] like Figure 7As shown, in some embodiments, the transmission mechanism 4 can also employ a synchronous belt drive. The transmission mechanism 4 includes a primary gear 41, a driving synchronous pulley 46, a driven synchronous pulley 48, a synchronous belt 47, and a drive wheel 45. The primary gear 41, driving synchronous pulley 46, driven synchronous pulley 48, and drive wheel 45 are all rotatably mounted in the housing 1. The primary gear 41 meshes with the power output gear 32 of the gearbox 31 of the motor 3. The driving synchronous pulley 46 is fixedly mounted coaxially with the primary gear 41. The synchronous belt 47 is tensioned and sleeved on the driven synchronous pulley 48 and the driving synchronous pulley 46. The driven synchronous pulley 48 is fixedly mounted coaxially with the drive wheel 45. The drive wheel 45 is an incomplete gear, and the striking member 2, similar to a rack, has teeth that mesh with the drive wheel 45. During the compression, energy storage, and nailing process, the drive wheel 45 meshes with the striking member 2. The power of the motor 3 is transmitted to the primary gear 41 through the gearbox 31 and the power output gear 32. The primary gear 41 then transmits the power to the driven synchronous pulley 48 through the driving synchronous pulley 46 and the synchronous belt 47. The driven synchronous pulley 48 drives the drive wheel 45 to engage with the striking member 2. When the drive wheel 45 meshes with the striking member 2, it drives the striking member 2 to push the piston 61 to compress the spring 52 for energy storage. When the drive wheel 45 disengages from the striking member 2, the striking member 2 is ejected along the nailing channel under the elastic restoring force of the spring 52, thereby driving the fastener into the working surface. The method of fixing the driving synchronous pulley 46 and the primary gear 41 coaxially, and the driven synchronous pulley 48 and the drive wheel 45 coaxially, saves installation space, thus ensuring the compact structure of the fastener driver 100. Moreover, the use of the synchronous belt 47 for transmission ensures efficient and stable power transmission, guarantees transmission efficiency, and has a long service life. In other embodiments, the transmission mechanism 4 can also adopt a common flat belt drive or chain drive, without further restrictions. By adopting the above methods, it can be ensured that the fastener driver 100 operates smoothly and stably.

[0073] The motor 3 and gearbox 31 are arranged at the handle 12 of the housing 1, placing the center of gravity of the fastener driver 100 in the user's hand grip position for ease of use. However, because the motor 3 and gearbox 31 generate a large amount of heat during operation, this heat dissipates through the handle 12, resulting in a high temperature at the handle 12, which could harm the user's hands. To solve this problem, such as... Figure 1 and Figure 2As shown, in some embodiments, an air inlet 13 is provided on the handle portion 12 of the housing 1, and the air inlet 13 is located between the motor 3 and the gearbox 31. During the operation of the motor 3 and the gearbox 31, outside air enters through the air inlet 13 and is discharged through the air outlet on the housing 1. In this process, the heat generated by the operation of the motor 3 and the gearbox 31 is carried away by the air circulation, thereby reducing the temperature of the handle portion 12 and ensuring that the temperature rise of the handle portion 12 meets the safety test requirements. To prevent the user's palm from blocking the air inlet 13 and causing a decrease in heat dissipation, optionally, two air inlets 13 are symmetrically provided on the handle portion 12. Even if one air inlet 13 is blocked by a palm, the other air inlet 13 can still allow air to enter normally, ensuring effective cooling of the motor 3 and the gearbox 31. In other embodiments, more than two air inlets 13 can be arranged on the handle portion 12, without further restrictions.

[0074] In some embodiments, the area of ​​the air inlet 13 is greater than or equal to 50 mm². 2 For example, the area of ​​the air inlet 13 can be 51 mm². 2 52mm 2 53mm 2 54mm 2 55mm 2 56mm 2 57mm 2 58mm 2 59mm 2 60mm 2 ...By ensuring the area of ​​the air inlet 13, smooth airflow can be guaranteed, thereby effectively reducing the operating temperature of the motor 3 and gearbox 31.

[0075] In some embodiments, to prevent small particles and other impurities in the air from entering the housing 1 through the air inlet 13 and causing wear to the transmission mechanism 4, a filter screen can be installed at the air inlet. The filter screen removes small particles and other impurities, thereby reducing the impact on the transmission mechanism 4.

[0076] In some embodiments, motor 3 is a brushless motor. Brushless motors eliminate the traditional brush and commutator structure, and achieve rotor rotation by controlling the current through electronic components. While ensuring output power, the structure is more compact, the overall weight is reduced, and the maintenance cost is lower, which can well meet the needs of the fastener driver 100.

[0077] In some embodiments, to further improve the user's grip on the fastener driver 100 and enable a firm hold, the circumferential length L of the handle 12 is greater than or equal to 120 mm and less than or equal to 140 mm. For example, the circumferential length L of the handle 12 can be 121 mm, 122 mm, 123 mm, 124 mm, 125 mm, 126 mm, 127 mm, 128 mm, 129 mm, 130 mm, etc. The width W2 of the handle 12 is greater than or equal to 35 mm and less than or equal to 45 mm. For example, the width W2 of the handle 12 can be 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm. With the above configuration, the handle 12 can be compactly structured while effectively accommodating the motor 3 and gearbox 31, thus facilitating user grip.

[0078] like Figure 8 As shown, during the operation of the fastener driver 100, the nailing position is usually determined based on the user's experience, leading to uncertainty in nailing quality. To address this issue, in some embodiments, a positioning laser light 71 is arranged on the front housing 7 of the fastener driver 100 near the end of the striking member 2. During nailing, the laser light 71 illuminates the working surface to form a dotted indication, allowing the user to nail according to the indicated position. Positioning holes are provided on the front housing 7, in which the laser light 71 is installed. The laser light 71 can be controlled via a control panel, which controls its on / off state and brightness. Alternatively, it can be controlled using the trigger switch and main switch 110 of the fastener driver 100; no further limitations are imposed here. The control panel can be located in the area of ​​the housing 1 where the user accommodates the battery pack, making full use of the space and further ensuring structural compactness.

[0079] In some embodiments, to facilitate the use of fasteners in dimly lit areas, a light is provided at the front end of the fastener driver 100. The light can be an LED, ensuring effective illumination while occupying little space and saving energy. A light control switch is arranged on the housing 1. When illumination is needed, simply press the control switch. Alternatively, the LED light and laser light 71 can share a single control switch for easier control.

[0080] In some embodiments, such as Figures 9-12As shown, during the operation of the fastener driver 100, the transmission mechanism 4 drives the lifting mechanism 8 to reciprocate along the extension direction of the guide rod 81. When the lifting mechanism 8 lifts the impact block 82 to the left along the guide rod 81, it compresses the energy storage spring 83. When it recovers, the energy storage spring 83 releases, and the impact force generated by the release causes the impact block 82 to complete the nailing action with the firing pin. During this process, the fastener driver 100 has a strong recoil force, resulting in severe bouncing during use, causing discomfort to the user's wrist, and causing deviation in the nailing position.

[0081] like Figure 9 and Figure 10 As shown, to solve the above problems, in some embodiments, a guide rail is arranged in the housing 1 along the direction of the parallel guide rod 81. A collision block 84 is slidably arranged on the guide rail, and a strip groove 841 is formed on the collision block 84. The paddle 821 of the impact block 82 is located in the strip groove 841. During the energy storage process of the impact block 82, the collision block 84 moves synchronously. During the release process of the impact block 82, the collision block 84 moves forward under the elastic force of the energy storage spring 83. When the impact block 82 touches the limiting member and stops moving, due to the sliding space formed by the strip groove 841, the collision block 84 continues to slide forward along the guide rail under the action of inertia to impact the nail seat of the striking member 2, thereby suppressing the nail seat bounce, reducing the recoil force, and ensuring the accuracy of nailing.

[0082] like Figure 11 As shown, in some embodiments, a buffer spring 93 is provided at the upper end of the housing 1, and a fixed pulley 9, a first connecting rod 91, and a second connecting rod 92 are rotatably arranged in the housing 1. One end of the first connecting rod 91 is rotatably connected to the buffer spring 93, and the other end of the first connecting rod 91 is rotatably connected to the fixed pulley 9. One end of the second connecting rod 92 is rotatably connected to the impact block 82, and the other end of the second connecting rod 92 is rotatably connected to the fixed pulley 9. During the energy storage process of the impact block 82, the first connecting rod 91 drives the buffer spring 93 to stretch; after the impact block 82 releases, under the action of the first connecting rod 91, the buffer spring 93 changes from a stretched state to a compressed state, thereby playing a buffering role, effectively suppressing nail seat bounce, reducing recoil, and ensuring nail driving accuracy.

[0083] like Figure 12 As shown, in some embodiments, a counterweight 14 can be placed at the rear end of the housing 1 away from the striking member 2, thereby increasing the weight of the fastener driver 100, which helps to suppress the bouncing of the fastener driver 100 during nailing, increases stability, and ensures the accuracy of nailing. The counterweight 14 needs to be positioned on the upper part of the axis 831 of the energy storage spring 83 or in the tail region of the energy storage spring 83 to ensure it effectively suppresses bouncing.

[0084] In some embodiments, the average torque of motor 3 in one nailing cycle is greater than or equal to 0.15 Nm. For example, the average torque of motor 3 in one nailing cycle can be 0.16 Nm, 0.17 Nm, 0.18 Nm, 0.19 Nm, 0.20 Nm, 0.21 Nm, 0.22 Nm, 0.23 Nm, 0.24 Nm, 0.25 Nm, and so on. Through the above settings, it can be ensured that the output torque of motor 3 effectively drives the striking member 2 to strike the fastener, ensuring that the nailing quality meets the requirements.

[0085] like Figures 1-6 As shown, this utility model also provides a fastener driver 100, which includes a housing 1, an impact member 2, a motor 3, a transmission mechanism 4, and an energy storage assembly 5. The housing 1 includes a main body 11 and a handle 12 for user gripping. The impact member 2 drives the fastener into the working surface. The transmission mechanism 4 is connected to the output end of the motor 3. The energy storage assembly 5 is configured to store driving energy and drive the impact member 2 upon release. The width W1 of the main body 11 is less than or equal to 55 mm, and the width of the main body 11 is defined as its dimension in the Y-axis direction in the fastener driving coordinate system; the energy E generated by the energy storage assembly 5 and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J. Exemplarily, the width W1 of the main body 11 can be 54 mm, 53 mm, 52 mm, 51 mm, 50 mm, 49 mm, 48 mm, 47 mm, etc., wherein the width of the main body 11 does not include the width of the mounting portion for installing the battery pack. The energy E generated by the energy storage component 5 and transmitted to the fastener to drive it to be injected into the working surface can be 13J, 14J, 15J, 16J, 17J, 18J, 19J, 20J, 21J, 22J, 23J...

[0086] Because the width W1 of the main body 11 is less than or equal to 55mm, the overall size of the fastener driver 100 is relatively compact, thus achieving a miniaturized design that effectively meets the needs of use in confined spaces and improves the flexibility of use. Furthermore, the energy E generated and transferred to the fastener by the energy storage component 5 to drive it into the working surface is greater than or equal to 12J. This ensures sufficient impact energy output while achieving a compact design for the fastener driver 100, thereby guaranteeing work efficiency.

[0087] like Figure 2As shown, in some embodiments, the motor 3 is disposed within the handle portion 12. This arrangement fully utilizes the space of the handle portion 12, reducing the space occupied by the motor 3, thereby reducing the size of the fastener driver 100 and improving its compactness, thus meeting the needs of use in confined spaces. Furthermore, the placement of the motor 3 within the handle portion 12 brings the center of gravity of the fastener driver 100 closer to the handle portion 12, resulting in less hand strain and a more comfortable operating experience when the user holds the fastener driver 100 at different angles.

[0088] like Figures 1-6 As shown, this utility model also provides a fastener driver 100, which includes a housing 1, an impact member 2, a motor 3, a transmission mechanism 4, and an energy storage component 5. The housing 1 includes a main body 11 and a handle 12 for user gripping. The impact member 2 drives the fastener into the working surface. The transmission mechanism 4 is connected to the output end of the motor 3; the energy storage component 5 is configured to store driving energy and drive the impact member 2 upon release. The total weight M1 of the fastener driver 100 is less than or equal to 1.7 kg; the energy E generated by the energy storage component 5 and transmitted to the fastener to drive it into the working surface is greater than or equal to 12 J. Exemplarily, the total weight M1 of the fastener driver 100 can be 1.65 kg, 1.60 kg, 1.55 kg, 1.50 kg, 1.45 kg, 1.40 kg, 1.35 kg, 1.30 kg, etc. The energy E generated by the energy storage component 5 and transmitted to the fastener to drive it to be injected into the working surface can be 13J, 14J, 15J, 16J, 17J, 18J, 19J, 20J, 21J, 22J, 23J...

[0089] By designing the fastener driver 100 to be compact and miniaturized, its weight is reduced. This ensures the fastener driver 100 can effectively perform nailing operations while reducing overall weight, making it easier for users to use and reducing their labor intensity. Furthermore, the energy E generated and transferred to the fastener by the energy storage component 5 to drive it into the working surface is greater than or equal to 12J. This ensures that the fastener driver 100 is miniaturized, lightweight, and compact while maintaining sufficient impact energy, thus guaranteeing work efficiency.

[0090] like Figure 2 As shown, in some embodiments, the motor 3 is disposed within the handle portion 12. This arrangement fully utilizes the space of the handle portion 12, reducing the space occupied by the motor 3, thereby reducing the size of the fastener driver 100 and improving its compactness, thus meeting the needs of use in confined spaces. Furthermore, the placement of the motor 3 within the handle portion 12 brings the center of gravity of the fastener driver 100 closer to the handle portion 12, resulting in less hand strain and a more comfortable operating experience when the user holds the fastener driver 100 at different angles.

[0091] like Figures 1-6 As shown, this utility model also provides a fastener driver 100, which includes a housing 1, an impact member 2, an impact assembly 6, a motor 3, a transmission mechanism 4, and an energy storage assembly 5. The housing 1 includes a main body 11 and a handle 12 for user gripping. The impact member 2 drives the fastener into the working surface. The impact assembly 6 includes a piston 61 for fixing the impact member 2. The transmission mechanism 4 is connected to the output end of the motor 3, and the energy storage assembly 5 is configured to store driving energy and drive the impact member 2 upon release. The energy E generated by the energy storage assembly 5 and transmitted to the fastener to drive it into the working surface is greater than or equal to 12J. The weight M2 of the impact assembly 6 is less than or equal to 50g. Exemplarily, the energy E generated by the energy storage assembly 5 and transmitted to the fastener to drive it into the working surface can be 13J, 14J, 15J, 16J, 17J, 18J, 19J, 20J, 21J, 22J, 23J… The weight M2 of the impact component 6 can be 49g, 48g, 47g, 46g, 45g, 44g, 43g, 42g, 41g, 40g...

[0092] Since the energy E generated and transferred to the fastener by the energy storage component 5 to drive it to strike the working surface is greater than or equal to 12J, the fastener driver 100 is designed to be lightweight while ensuring the output impact energy, thereby guaranteeing work efficiency. By reducing the weight of the impact component 6, the overall weight of the fastener driver 100 can be further reduced, making it easier for users to operate it by hand, reducing the user's labor intensity, and improving the comfort of use.

[0093] like Figure 2 As shown, in some embodiments, the motor 3 is disposed within the handle portion 12. This arrangement fully utilizes the space of the handle portion 12, reducing the space occupied by the motor 3, thereby reducing the size of the fastener driver 100 and improving its compactness, thus meeting the needs of use in confined spaces. Furthermore, the placement of the motor 3 within the handle portion 12 brings the center of gravity of the fastener driver 100 closer to the handle portion 12, resulting in less hand strain and a more comfortable operating experience when the user holds the fastener driver 100 at different angles.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A fastener driver, characterized in that, include: The housing (1) includes a main body (11) and a handle (12) for the user to hold; Impact component (2) is used to drive the fastener into the working surface; Motor (3); The transmission mechanism (4) is connected to the output end of the motor (3); An energy storage component (5) is configured to store driving energy and drive the striking element (2) upon release; The motor (3) is disposed inside the handle (12); The diameter D of the motor (3) is less than or equal to 38 mm; The energy E generated by the energy storage component (5) and transmitted to the fastener to drive it into the working surface is greater than or equal to 12J.

2. The fastener driver according to claim 1, characterized in that, The width W1 of the main body (11) is less than or equal to 55 mm, and the width of the main body (11) is defined as the dimension in the Y-axis direction in the fastener drive coordinate system.

3. The fastener driver according to claim 1, characterized in that, The total weight M1 of the fastener driver (100) is less than or equal to 1.7 kg.

4. The fastener driver according to any one of claims 1-3, characterized in that, It also includes an impact assembly (6), which includes a piston (61) for fixing the impact member (2), and the weight M2 of the impact assembly (6) is less than or equal to 50g.

5. The fastener driver according to claim 2, characterized in that, E / W1 is greater than or equal to 0.21 J / mm.

6. The fastener driver according to claim 3, characterized in that, E / M1 is greater than or equal to 7 J / kg.

7. The fastener driver according to claim 4, characterized in that, E / M2 is greater than or equal to 0.24 J / g.

8. The fastener driver according to claim 4, characterized in that, The energy storage assembly (5) includes a spring (52) and a cylinder (51). One end of the spring (52) is fixed to the piston (61), and the cylinder (51) is sleeved on the spring (52). The inner wall surface of one end of the cylinder (51) is connected to the outer peripheral surface of the piston (61), and the inner wall surface of the other end of the cylinder (51) abuts against the spring (52).

9. The fastener driver according to claim 8, characterized in that, The distance L1 from the central axis (521) of the spring (52) to the main body (11) is less than or equal to 25 mm.

10. The fastener driver according to any one of claims 1-3, characterized in that, It also includes a magazine (120) configured to receive the fastener, wherein the nearest distance L2 from the center of gravity G of the fastener driver (100) to the magazine (120) is greater than or equal to 60 mm.

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