Fastener driver

Abstract

The invention discloses a fastener driver which comprises a striking part used for driving a fastener to be injected into a working face. The driving mechanism comprises an impact piece for driving the striking piece and an energy storage assembly for impacting the impact piece when energy is released; the motor is used for driving the driving mechanism; the shell comprises a main body part used for containing at least part of the energy storage assembly and a handle part used for being held by a user; the speed reducing mechanism is connected with the motor and the driving mechanism so as to transmit power output by the motor to the driving mechanism; the energy storage assembly comprises a spring which drives the impact part to move forwards when releasing energy; the driving mechanism comprises a driving part used for driving the impact part to move backwards so as to compress the spring; the driving piece comprises a driving part for driving the impact piece, the impact piece comprises a lifting part matched with the driving part to move backwards, and the lifting part comprises a lifting surface in contact with the driving part; and the lifting surface is a curved surface or an inclined surface which is obliquely arranged relative to the extension direction of the spring. The fastener driver is good in stability during use.

Description

Technical Field

[0001] The present application relates to a power tool, and more particularly to a fastener driver. Background Art

[0002] As a fastener driver, a nail gun is used to quickly drive nails into a working surface. A nail gun generally includes a striking member, an energy storage assembly, etc. A nail driving process of a nail gun generally includes: the striking member is driven to move from the bottom dead center to the top dead center, and then the energy storage assembly releases energy to drive the striking member to quickly move from the top dead center to the bottom dead center. The nail gun vibrates greatly during the nail driving process, and the generated torque is also large, making it laborious for the user to operate. This section provides background information related to the present application, and these background information are not necessarily prior art. Summary of the Invention

[0003] An object of the present application is to solve or at least alleviate part or all of the above problems. To this end, an object of the present application is to provide a fastener driver with comfortable operation and greater stability.

[0004] To achieve the above object, the present application adopts the following technical solutions: A fastener driver includes: a striking member for driving a fastener into a working surface; a driving mechanism including an impact member for driving the striking member and an energy storage assembly for impacting the impact member when releasing energy; a motor for driving the driving mechanism; a housing including a main body portion for accommodating at least part of the energy storage assembly and a handle portion for the user to hold; a speed reduction mechanism connecting the motor and the driving mechanism to transmit the power output by the motor to the driving mechanism; the energy storage assembly includes: a spring for driving the impact member to move forward when releasing energy; the driving mechanism includes: a driving member for driving the impact member to move backward to compress the spring; the driving member includes a driving portion for driving the impact member, the impact member includes a lifting portion for cooperating with the driving portion to move backward, and the lifting portion includes a lifting surface contacting the driving portion; wherein, the lifting surface is a curved surface or an inclined surface inclined relative to the extending direction of the spring.

[0005] In some embodiments, the driving member further includes a second driving portion for driving the impact member, the impact member includes a second lifting portion for cooperating with the second driving portion to move backward, the second lifting portion includes a second lifting surface contacting the second driving portion, and the second lifting surface is a curved surface or an inclined surface inclined relative to the extending direction of the spring.

[0006] In some embodiments, the driving member further includes a second driving portion for driving the impact member, the impact member includes a second lifting portion for cooperating with the second driving portion to move backward, the driving portion cooperates with the lifting portion to drive the driving member to move backward from the bottom dead center to the first stroke position, and the second driving portion cooperates with the second lifting portion to drive the driving member to move backward from the first stroke position to the top dead center.

[0007] In some embodiments, the second lifting portion includes a second lifting surface that contacts the second driving portion, and the second lifting surface is a plane that is perpendicular to the extending direction of the spring.

[0008] In some embodiments, the driving member further includes a second driving portion that drives the impact member. The impact member includes a second lifting portion that cooperates with the second driving portion to move backward. The second driving portion and the second lifting portion cooperate to drive the driving member to move backward from the bottom dead center to the first stroke position, and the driving portion and the lifting portion cooperate to drive the driving member to move backward from the first stroke position to the top dead center.

[0009] In some embodiments, the second lifting portion includes a second lifting surface that contacts the second driving portion, and the second lifting surface is a plane that is perpendicular to the extending direction of the spring.

[0010] In some embodiments, the angle formed by the plane where the inclined surface is located and the extending direction of the spring intersects obliquely and is greater than or equal to 50 and less than or equal to 85.

[0011] In some embodiments, the heights of the driving portion and the second driving portion in the up-down direction are the same.

[0012] In some embodiments, the driving member further includes a second driving portion that drives the impact member. The impact member includes a second lifting portion that cooperates with the second driving portion to move backward. The second lifting portion includes a second lifting surface that contacts the second driving portion, and the second lifting surface is a plane that is perpendicular to the extending direction of the spring.

[0013] In some embodiments, the heights of the driving portion and the second driving portion in the up-down direction are different.

[0014] A fastener driver includes: a striking member for driving a fastener into a working surface; a driving mechanism including an impact member that drives the striking member and an energy storage assembly that impacts the impact member when releasing energy; a motor for driving the driving mechanism; a housing including a main body portion for accommodating at least part of the energy storage assembly and a handle portion for a user to hold; a speed reduction mechanism connecting the motor and the driving mechanism to transmit the power output by the motor to the driving mechanism; the energy storage assembly includes: a spring that drives the impact member to move forward when releasing energy; the speed reduction mechanism includes: a driving member for driving the impact member to move backward to compress the spring; the driving member includes a driving portion that drives the impact member, the impact member includes a lifting portion that cooperates with the driving member to move backward, and the lifting portion includes a lifting surface that contacts the driving portion; wherein, the lifting surface includes: a first contact point that contacts the driving portion and is located at a first position in the front-rear direction; a second contact point that contacts the driving portion and is located at a second position in the front-rear direction.

[0015] The advantages of the present application are as follows: The lifting surface of the fastener driver is set as an inclined surface, and the driving member can drive the impact member to move towards the top dead center more stably, thereby improving the stability of the fastener driver and making the user operation more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a plan view of the fastener driver according to an embodiment of the present application when a battery pack is installed; Figure 2 is applicable to Figure 1 a three-dimensional view of the fastener for the fastener driver in Figure 3 is Figure 2 a plan view of the fastener in Figure 4 is Figure 1 a three-dimensional view of the striker and the fastener in the fastener driver in Figure 5 is Figure 1 an internal view of the fastener driver in when part of the housing is removed; Figure 6 is Figure 5 a three-dimensional view of the structure shown in when the wire is removed; Figure 7 is Figure 1 a plan view of part of the housing, the drive mechanism, the striker, the trigger assembly, etc. of the fastener driver in , wherein the trigger assembly is in a prohibited state; Figure 8 is Figure 1 a plan view of part of the housing, the drive mechanism, the striker, the trigger assembly, etc. of the fastener driver in , wherein the trigger assembly is in a standby state; Figure 9 is Figure 1 a three-dimensional view of the motor, the reduction mechanism, the drive mechanism, the trigger assembly, etc. in the fastener driver in ; Figure 10 is Figure 9 a cross-sectional view of the structure shown in ; Figure 11 is Figure 9 an exploded view of the reduction mechanism in ; Figure 12 is Figure 5 an enlarged view of part of the structure in ; Figure 13 is Figure 12 a cross-sectional view of the structure shown in in a plane perpendicular to the up-and-down direction, and the plane passes through the stator assembly; Figure 14 is Figure 5 a three-dimensional view of the guide rod and the limiting member in ; Figure 15 isFigure 14 Exploded view of the shown structure; Figure 16 is Figure 14 Cross-sectional view of the limit member in; Figure 17 is Figure 6 Enlarged view of a part of the shown structure; Figure 18 is Figure 17 Plan view of the driving member, energy storage component, triggering component, striking member, etc. in, where the impact member is at the bottom dead center; Figure 19 is Figure 18 Cross-sectional view of the shown structure; Figure 20 is Figure 17 Plan view of the driving member, energy storage component, triggering component, striking member, etc. in, where the impact member is at the top dead center; Figure 21 is Figure 20 Cross-sectional view of the shown structure; Figure 22 is Figure 17 Stereogram of the triggering component, striking member and lifting member in; Figure 23 is Figure 22 Stereogram of the shown structure from another perspective; Figure 24 is Figure 22 Front view of the shown structure; Figure 25 is Figure 22 Cross-sectional view of the shown structure; Figure 26 is Figure 17 Stereogram of the driving member and the impact member in; Figure 27 is Figure 26 Plan view of the impact member in; Figure 28 is Figure 26 Stereogram of the impact member in; Figure 29 is Figure 17 Contact principle diagram of the driving member and the impact member in; Figure 30 is a diagram showing the change of the torque on the guide rod when the driving member and the impact member in the prior art are in contact; Figure 31 is a diagram showing the change of the torque on the guide rod of the present application; Figure 32 is a stereogram of the driving member and the impact member in another embodiment; Figure 33 is Figure 32 Stereogram of the impact member in. Detailed implementation manners

[0017] Before explaining any implementation manner of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0018] In the present application, the terms "comprise", "include", "have" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0019] In the present application, the term "and / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the present application, the character " / " generally indicates that the associated objects before and after are in an "and / or" relationship.

[0020] In the present application, the terms "connect", "combine", "couple", "mount" may be direct connection, combination, coupling or mounting, or may be indirect connection, combination, coupling or mounting. Among them, by way of example, direct connection means that two parts or components are connected together without setting an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and may include electrical connection or coupling.

[0021] In the present application, those of ordinary skill in the art will understand that relative terms used in combination with a quantity or condition (such as "about", "approximately", "substantially", etc.) are intended to include the stated value 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 caused by manufacturing, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. The relative term may refer to a plus or minus of a certain percentage (such as 1%, 5%, 10% or more) of the indicated value. A numerical value without using a relative term should also be disclosed as a specific value with a tolerance. In addition, when expressing a relative angular position relationship (such as substantially parallel, substantially perpendicular), "substantially" may refer to a plus or minus of a certain number of degrees (such as 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0022] In the present application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0023] In the present application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as the upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0024] In the present application, the terms "controller", "processor", "central processing unit", "CPU", "MCU" can be interchanged. When using the units "controller", "processor", "central processing unit", "CPU", or "MCU" to perform specific functions, unless otherwise specified, these functions can be performed by a single one of the above units or multiple of the above units.

[0025] In the present application, the terms "device", "module", or "unit" can be implemented in the form of hardware or software in order to achieve specific functions.

[0026] In the present application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or a similar electronic computing device (e.g., a controller, a processor, etc.).

[0027] As Figure 1 shown, the fastener driver 100 is used to drive the fastener 201 into the working surface 200. For example, the fastener 201 is a nail, and the nail can be a straight nail or a U-shaped nail. In this embodiment, as Figure 2 and Figure 3As shown, the fastener 201 is a U-shaped nail, and the U-shaped nail includes: a body portion 201a, a first leg portion 201b, and a second leg portion 201c. The first leg portion 201b and the second leg portion 201c are respectively disposed at two ends of the body portion 201a. The extending direction of the first leg portion 201b is parallel to the extending direction of the second leg portion 201c, and the extending direction of the first leg portion 201b is also perpendicular to the extending direction of the body portion 201a. The fastener driver 100 drives the fastener 201 to be quickly driven into the working surface 200, thereby fixing the working surface 200 to the platform on the back of the working surface 200.

[0028] As Figures 1 to 5 shown, the fastener driver 100 includes: a housing 11, a striker 12, a driving mechanism 13, and a motor 14. Among them, the housing 11 is used to support the striker 12, the driving mechanism 13, and the motor 14. The striker 12 is used to drive the fastener 201 to be shot into the working surface 200 along the striking straight line 101 direction. As Figure 4 shown, the striker 12 is a sheet-like element extending in a plane parallel to the striking straight line 101 direction. The driving mechanism 13 is used to drive the striker 12 to move along the striking straight line 101 direction so as to impact the fastener 201 to be shot into the working surface 200 along the striking straight line 101 direction. The motor 14 is disposed in the housing 11, and the motor 14 is used to provide power for the driving mechanism 13. In this embodiment, the motor 14 is specifically a motor 14, and the motor 14 provides power for the driving mechanism 13. It can be understood that in other embodiments, the motor 14 can also be other forms of power sources, such as an engine. In this application, for the convenience of description, the motor 14 is used for description.

[0029] For the convenience of describing the technical solution of this application, the front-back direction and the up-down direction as Figure 1 shown are defined, where the front-back direction is parallel to the striking straight line 101, and the direction from the striker 12 to the fastener 201 is the front, and the up-down direction is perpendicular to the front-back direction.

[0030] As Figure 6 and Figure 7As shown, the driving mechanism 13 includes: a driving component 131, an energy storage component 132, and an impact component 133. The driving component 131 is used to drive the energy storage component 132 to store energy. The impact component 133 is connected to the striking component 12, and the impact component 133 is arranged to be able to move relative to the housing 11 along the direction of the first straight line 102 and drive the striking component 12 to move along the striking straight line 101 when moving along the direction of the first straight line 102. The energy storage component 132 stores the energy used to drive the impact component 133 to move, and drives the impact component 133 to move along the first straight line 102 when releasing the energy, so as to drive the striking component 12 to move along the striking straight line 101. In this embodiment, the energy storage component 132 includes: a guide rod 132a and a spring 132b. The guide rod 132a extends along the central axis 103 direction, and the spring 132b is arranged on the guide rod 132a and extends along the central axis 103 direction of the guide rod 132a. The spring 132b stores energy when being compressed and releases energy when stretching. The spring 132b drives the impact component 133 to move when releasing energy. The spring 132b is also centered on the central axis 103 of the guide rod 132a. That is to say, the spring 132b extends along the central axis 103, and the stretching direction or compression direction of the spring 132b is consistent with the central axis 103. It can be understood that in this embodiment, the central axis 103 coincides with the first straight line 102. It can be understood that in other embodiments, the central axis 103 can also be parallel to the first straight line 102. In this embodiment, the spring 132b is sleeved on the guide rod 132a. It can be understood that in other embodiments, the spring can also be arranged in a guide cylinder that circumferentially surrounds the spring, in which case there is no need to provide a guide rod.

[0031] As Figure 9 and 10 shown, in this embodiment, the motor 14 is an inner rotor motor 14, which includes: a stator assembly 141 and a rotor assembly 142. The rotor assembly 142 includes a motor shaft 142a for outputting power, and the stator assembly 141 surrounds the motor shaft 142a. The motor shaft 142a can rotate relative to the housing 11 around the motor axis 104 to output power. It can be understood that in other embodiments, the motor 14 can also be an outer rotor motor 14. As Figure 1 and Figure 5 shown, a battery pack 300 is installed on the housing 11, and the battery pack 300 is used to supply power to the fastener driver 100. When the battery pack 300 is installed on the housing 11, it can at least supply power to the motor 14 to make the motor 14 operate. It can be understood that in other embodiments, the fastener driver 100 can also be powered by other power supply devices. For example, the power supply device can be an AC wire connected to the mains, or the power supply device can also be other connection cables that can be connected to the power equipment.

[0032] AsFigure 5 and Figure 6 As shown in Figure 6 , the fastener driver 100 further includes a speed reduction mechanism 15 disposed between the motor 14 and the driving mechanism 13. The speed reduction mechanism 15 is connected to the motor 14 and the driving mechanism 13, thereby transmitting the power output by the motor 14 to the driving mechanism 13. The speed reduction mechanism 15 also reduces the rotational speed output by the motor 14 for output. When driven by the motor 14, the speed reduction mechanism 15 can drive the impact member 133 in the driving mechanism 13 to move backward, so that the impact member 133 compresses the spring 132b to store energy in the spring 132b.

[0033] The fastener driver 100 further includes a magazine 191 disposed at the front end of the housing 11. The magazine 191 is used to accommodate the fasteners 201, and the magazine 191 can push the fasteners 201 one by one to the nailing position.

[0034] As Figure 1 、and Figure 6 As shown in Figure 5 and Figure 6 , the housing 11 includes: a main body portion 111 and a handle portion 112. The main body portion 111 is formed with a first accommodation cavity 111a for accommodating at least a part of the energy storage assembly 132. The handle portion 112 is for the user to hold to operate the fastener driver 100. The fastener driver 100 further includes a trigger 192, and the trigger 192 is mounted to the handle portion 112. When the user holds the handle portion 112, the trigger 192 can be operated to make the trigger 192 move.

[0035] As Figures 6 to 8 shown in Figures 6 to 8 , the fastener driver 100 further includes a trigger assembly 16. The trigger assembly 16 is used to abut against the working surface 200 to switch between the standby state shown in Figure 8 Figure 8 and the prohibited state shown in Figure 7 . The trigger assembly 16 includes a trigger member 161 that can move relative to the housing 11 in the front-rear direction and a trigger switch 162 disposed at one end of the trigger member 161. When the user holds the handle portion 112 and makes the trigger member 161 abut against the working surface 200, the trigger member 161 can move backward relative to the housing 11, so that the trigger member 161 activates the trigger switch 162, causing the fastener driver 100 to switch to the standby state. When the trigger assembly 16 is in the standby state, the fastener driver 100 is in a state allowing the motor 14 to start. At this time, if the user triggers the trigger 192, the motor 14 starts, and the fastener driver 100 can drive out the fasteners 201. When the trigger member 161 does not abut against the working surface 200, the trigger switch 162 is not activated, and the trigger assembly 16 is in the prohibited state. At this time, the fastener driver 100 is in a state prohibiting the motor 14 from starting. At this time, if the user operates the trigger 192, the motor 14 will not start either, thus preventing the fastener driver 100 from accidentally starting and hurting the user. ​​

[0036] Thus, when a user needs to perform a nailing operation, the user first grasps the handle 112, causing the trigger member 161 to move backward relative to the housing 11 against the working surface 200, thereby activating the trigger switch 162. The user then operates the trigger 192 to activate the motor 14. After activation, the motor 14 transmits power to the reduction mechanism 15, which drives the drive assembly 131. The drive assembly 131 drives the impact member 133 to move backward along the first straight line 102 to the top dead center, compressing the spring 132b. The spring 132b accumulates energy, and the impact member 133 also drives the striking member 12 backward in a direction parallel to the first straight line 102. The drive assembly 131 then releases the drive to the impact member 133, releasing the energy from the spring 132b to drive the impact member 133 forward to the bottom dead center. The impact member 133 then drives the striking member 12 forward rapidly, thereby driving the fastener 201 into the working surface 200. At this point, the fastener driver 100 completes one nailing process.

[0037] like Figure 1 、 Figures 5 to 8 As shown, the main body 111 extends generally along the first straight line 102, and the drive mechanism 13 and the striking member 12 are generally disposed within the first accommodating cavity 111a. The handle 112 extends downward from the lower side of the main body 111, and the extension direction of the handle 112 can be defined as generally being the second straight line 105. The handle 112 is generally disposed in the middle and rearward portion of the main body 111. The direction of the second straight line 105 is generally perpendicular to the direction of the first straight line 102. Alternatively, the angle formed between the direction of the second straight line 105 and the direction of the first straight line 102 is greater than or equal to 80 degrees and less than or equal to 100 degrees.

[0038] In this embodiment, the motor 14 is disposed in the second accommodating cavity 112a formed by the handle portion 112. The point of the motor axis 104 located at the upper end of the motor shaft 142a is defined as the endpoint O1. In the front-to-back direction, the distance L1 between the endpoint O1 and the front end face 11a of the shell 11 is less than or equal to 100 mm. In this way, when the motor 14 is disposed in the handle portion 112, and the distance between the motor axis 104 and the front end face 11a of the shell 11 is made as small as possible, the size of the entire fastener driver 100 in the front-to-back direction can be ensured to be small, and the center of gravity G of the entire machine can be made as close to the handle portion 112 as possible in the front-to-back direction, so that the user can hold the fastener driver 100 with less effort. Figure 1 The horizontal state shown makes the nailing position more accurate, the nails can enter the work surface 200 horizontally, and the user's work efficiency is also improved.

[0039] In some embodiments, the distance L1 between the end point O1 and the front end face 11a of the housing 11 is less than or equal to 98 mm. In some embodiments, the distance L1 between the end point O1 and the front end face 11a of the housing 11 is less than or equal to 95 mm.

[0040] The magazine 191 is provided at the front end of the main body portion 111. It can be understood that the front end face 11a of the housing 11 is substantially aligned with the front end face 11a of the magazine 191. Therefore, the distance between the end point O1 and the front end face 11a of the housing 11 is substantially the same as the distance between the end point O1 and the front end face 11a of the magazine 191.

[0041] The housing 11 further includes: a coupling portion for coupling the battery pack 300, and the battery pack 300 can be detachably mounted to the coupling portion. The coupling portion is provided at one end of the handle portion 112 away from the main body portion 111. The battery pack 300 can be mounted to the coupling portion in a direction parallel to the first straight line 102.

[0042] In the present embodiment, the housing 11 further includes a connecting portion 113 for mounting the magazine 191, and at least a part of the magazine 191 is disposed within the connecting portion 113. In the present embodiment, the connecting portion 113 extends substantially in the up and down direction, that is to say, the connecting portion 113 extends substantially along a third straight line 106 perpendicular to the first straight line 102. In this way, the extending direction of the connecting portion 113 is substantially parallel to the extending direction of the handle portion 112, and the connecting portion 113 is provided in front of the handle portion 112. Alternatively, in other embodiments, the connecting portion 113 may also extend in a direction inclined relative to the up and down direction.

[0043] A through hole 114 for the user's hand to pass through is formed between the connecting portion 113 and the handle portion 112. In the present embodiment, the main body portion 111 connects the handle portion 112 and the connecting portion 113 on the upper side of the handle portion 112 and the connecting portion 113, and the coupling portion connects the handle portion 112 and the connecting portion 113 on the lower side of the handle portion 112 and the connecting portion 113. In this way, the main body portion 111, the connecting portion 113, the coupling portion, and the handle portion 112 are sequentially connected to surround and form the above-mentioned through hole 114. It can be understood that, in other embodiments, the coupling portion may not connect the handle portion 112 and the connecting portion 113. In this case, the through hole 114 is the area between the handle portion 112 and the connecting portion 113. The through hole 114 penetrates the housing 11 in the left and right direction perpendicular to the first straight line 102. When the user holds the handle portion 112, the fingers can be at least partially located within the through hole 114, or the fingers pass through the through hole 114, so that the user's palm and fingers can surround the handle portion 112 to firmly hold the handle portion 112. In other embodiments, the housing 11 may not be provided with a connecting portion 113 extending in the up and down direction. In this case, the through hole 114 can be understood as the area between the handle portion 112 and the magazine 191.

[0044] In this embodiment, the through hole 114 has an upper edge 114a, a lower edge 114b, a front edge 114c, and a rear edge 114d. Among them, the upper edge 114a is the lower side of the main body portion 111, the lower edge 114b is the upper side of the coupling portion, the front edge 114c is the rear side of the connecting portion 113, and the rear edge 114d is the front side of the handle portion 112. In other embodiments, when the main body portion 111 does not have a connecting portion 113 extending in the up and down direction for installing the magazine 191, the front edge 114c can be considered as the rear side of the magazine 191. The distance L2 between the motor axis 104 and the front edge 114c of the through hole 114 is less than or equal to 70 mm. In this way, the distance between the connecting portion 113 or the magazine 191 and the motor axis 104 can be minimized as much as possible, so that the center of gravity G can be further arranged closer to the handle portion 112. In some embodiments, the distance L2 between the motor axis 104 and the front edge 114c of the through hole 114 is greater than or equal to 50 mm and less than or equal to 70 mm. In this way, the through hole 114 can also be comfortably passed through by the user's fingers.

[0045] As Figures 6 to 11 As shown, the reduction mechanism 15 is at least partially arranged in the handle portion 112, so that the size of the main body portion 111 in the up and down direction can be further reduced. In this embodiment, the reduction mechanism 15 includes a first reduction component 151 and a second reduction component 152. The first reduction component 151 is connected to the motor 14, the first reduction component 151 is arranged in the handle portion 112, the second reduction component 152 is connected to the driving component 131 to drive the driving component 131 to move, and the second reduction component 152 is arranged at the connection between the handle portion 112 and the connecting portion 113. At this time, it can be considered that a part of the second reduction component 152 is located in the handle portion 112 and a part is located in the main body portion 111. Or, it can also be considered that the second reduction component 152 is basically located in the main body portion 111.

[0046] As Figure 5As shown, the trigger 192 is used for the user to operate to start the fastener driver 100. The trigger 192 further includes an operating surface 192a for the user to operate. When the user's hand holds the handle portion 112, the user can contact the operating surface 192a with the index finger to pull the trigger 192. The operating surface 192a is the front surface of the trigger 192. In this embodiment, the operating surface 192a is an arc surface that fits the user's finger. Define the last point O2 of the operating surface 192a in the front-rear direction as the lowest point of the operating surface 192a. Or it can be understood that the lowest point of the arc surface is the last point O2 of the operating surface 192a. In this embodiment, in the up-down direction, the distance L3 between the central axis 103 of the spring 132b and the lowest point O2 of the operating surface 192a is less than or equal to 50 mm. In this way, the center of gravity G of the whole machine can be relatively low in the up-down direction, and the center of gravity G can be closer to the handle portion 112, so that the user can operate the fastener driver 100 more labor-saving. In some embodiments, the distance L3 between the central axis 103 of the spring 132b and the lowest point O2 of the operating surface 192a is less than or equal to 48 mm. In addition, the distance between the guide rod 132a and the trigger 192 is relatively close, which can also greatly reduce the volume of the whole fastener driver 100, thus facilitating the miniaturization design of the fastener driver 100, and can also make the nailing position of the fastener driver 100 closer to the top surface when nailing from the upper side against the top surface to the side. For example, in this embodiment, the dimension L4 of the housing 11 in the front-rear direction is less than or equal to 160 mm. The ratio of the dimension L4 of the housing 11 in the front-rear direction to the distance L1 between the motor axis 104 and the front end surface 11a of the housing 11 is greater than or equal to 1.4 and less than or equal to 2.5. In this way, the center of gravity G of the whole fastener driver 100 is as close as possible to the handle portion 112 in both the up-down direction and the front-rear direction, facilitating the user to operate labor-savingly. For example, in the front-rear direction, the distance L5 between the center of gravity G of the fastener driver 100 and the motor axis 104 is less than or equal to 20 mm. It should be noted that, for the convenience of explaining and demonstrating the technical solution, the center of gravity G in this embodiment refers to the center of gravity of the fastener driver 100 when the battery pack 300 is not installed and no fastener 201 is provided in the magazine 191. In some embodiments, the dimension L4 of the housing 11 in the front-rear direction is less than or equal to 155 mm. In some embodiments, the dimension L4 of the housing 11 in the front-rear direction is less than or equal to 150 mm. In some embodiments, the distance L5 between the center of gravity G of the fastener driver 100 and the motor axis 104 is less than or equal to 18 mm. It should be noted that the center of gravity G of the fastener driver 100 in this embodiment refers to the center of gravity of the fastener driver 100 when the battery pack is not installed.

[0047] Specifically, the first speed reduction assembly 151 includes: a first planetary gear set 151a, a second planetary gear set 151b, and an output shaft 151c. The first planetary gear set 151a includes a plurality of first planetary gears 151d, and the second planetary gear set 151b includes a plurality of second planetary gears 151e. The motor shaft 142a forms or is connected to a first sun gear 142b, and the first sun gear 142b meshes with the plurality of first planetary gears 151d. The first speed reduction assembly 151 further includes: an internal gear ring 151f and a first planetary gear carrier 151g. The plurality of first planetary gears 151d are disposed within the internal gear ring 151f and mesh with the internal gear ring 151f. The first planetary gear carrier 151g is used to mount the first planetary gears 151d. The first planetary gear carrier 151g further includes a first output portion 151h, and the first output portion 151h also serves as the second sun gear of the second planetary gear set 151b. The second planetary gears 151e mesh with the first output portion 151h. The second planetary gear set 151b further includes a second planetary gear carrier 151i. The second planetary gear carrier 151i is used to mount the second planetary gears 151e. The second planetary gear carrier 151i is connected to a shaft locking assembly 151j, and power is transmitted to the output shaft 151c through the shaft locking assembly 151j. Among them, the shaft locking assembly 151j allows power to be transmitted from the motor 14 to the output shaft 151c, while preventing power from being reversely transmitted from the output shaft 151c to the motor 14. The shaft locking assembly 151j is also disposed within the handle portion 112. The structure of the shaft locking assembly 151j belongs to relatively common technology and will not be elaborated here.

[0048] The first speed reduction assembly 151 is composed of two-stage planetary gear sets, so that space can be vacated within the handle portion 112 to arrange the trigger 192, the start switch 192b connected to the trigger 192, and other components.

[0049] In this embodiment, the internal gear ring 151f not only meshes with the first planet gear 151d, but also meshes with the second planet gear 151e. Thus, the reduction mechanism 15 does not need to separately provide a second internal gear ring 151f, saving costs. Moreover, in this embodiment, the internal gear ring 151f meshes with both the first planet gear 151d and the second planet gear 151e. In this way, the size of the internal gear ring 151f in the direction of the motor axis 104 is relatively large, so that the internal gear ring 151f can be used as a gearbox without separately providing a gearbox for enclosing the first planet gear set 151a and the second planet gear 151e, not only saving costs, but also reducing the size of the first reduction assembly 151, which is beneficial to reducing the size of the handle part 112. In this embodiment, the size of the internal gear ring 151f in the direction along the motor axis 104 is greater than or equal to 15 mm and less than or equal to 36 mm. Specifically, the first reduction assembly 151 includes: a first end cover 151k and a second end cover 151l. The first end cover 151k is arranged at the first end of the internal gear ring 151f, that is, the lower end of the internal gear ring 151f. The second end cover 151l is arranged at the second end of the internal gear ring 151f, that is, the upper end of the internal gear ring 151f. In this way, the first end cover 151k, the internal gear ring 151f and the second end cover 151l together form a gearbox for accommodating the first planet gear set 151a and the second planet gear set 151b.

[0050] The second reduction assembly 152 is connected to the drive assembly 131 to drive the drive assembly 131 to move. The second reduction assembly 152 includes: a first transmission gear 152a and a second transmission gear 152b. The first transmission gear 152a is connected to the output shaft 151c. Specifically, the first transmission gear 152a is fixedly connected to the output shaft 151c by being integrally formed with the output shaft 151c. It can be understood that in other embodiments, the first transmission gear 152a can also be an independently formed part and then connected to the output shaft 151c. The second transmission gear 152b meshes with the first transmission gear 152a. The meshing of the first transmission gear 152a with the first transmission gear 152a can be that the first transmission gear 152a is in direct contact with the first transmission gear for meshing, or an intermediate gear can be arranged between the two of them so that they are indirectly meshed. In this embodiment, the rotation axis 107 of the second transmission gear 152b is parallel to and non-coincident with the rotation axis of the first transmission gear 152a.

[0051] In this embodiment, separating the first reduction assembly 151 and the second reduction assembly 152 can reduce the size of the handle part 112. The second reduction assembly 152 can further utilize the space at the connection between the main body part 111 and the handle part 112, thereby improving the utilization rate of the space inside the housing 11.

[0052] The reduction ratio of the reduction mechanism 15 is greater than or equal to 40. Specifically, the reduction ratio of the first reduction component 151 is greater than or equal to 2 and less than or equal to 60, and the reduction ratio of the second reduction component 152 is greater than or equal to 2 and less than or equal to 20. In this way, while the output torque of the fastener driver 100 in this embodiment can meet the requirements, the size of the motor 14 can be reduced, which is beneficial to reducing the size of the handle portion 112. In some embodiments, the reduction ratio of the reduction mechanism 15 is greater than or equal to 50. In some embodiments, the reduction ratio of the reduction mechanism 15 is greater than or equal to 80. In some embodiments, the reduction ratio of the first reduction component 151 is greater than or equal to 15 and less than or equal to 30, and the reduction ratio of the second reduction component 152 is greater than or equal to 2 and less than or equal to 10.

[0053] The dimension of the output shaft 151c in the direction of the motor axis 104 is greater than or equal to 12 mm and less than or equal to 60 mm. In this way, a suitable space can be provided for avoiding interference between the first reduction component 151 and the second reduction component 152 to place the trigger 192 and the start switch 192b, and at the same time, the space will not be too large to cause waste.

[0054] The second reduction component 152 further includes a support member 152c for supporting the first transmission gear 152a and the second transmission gear 152b. The support member 152c is mounted to the output shaft 151c to support the output shaft 151c and the first transmission gear 152a. The support member 152c is formed with a mounting hole 152d, and the output shaft 151c passes through the mounting hole 152d. The support member 152c is further provided with a support shaft 152e, and the second transmission gear 152b is mounted on the support shaft 152e and can rotate relative to the support member 152c.

[0055] The driving assembly 131 includes a driving member 131a for driving the impact member 133 to move backward to compress the spring 132b. The driving member 131a includes a first driving portion 131b in contact with the impact member 133. In this embodiment, the first driving portion 131b is disposed on the second transmission gear 152b and the rotation axis 107 of the first driving portion 131b relative to the second transmission gear 152b is eccentric. That is to say, the first driving portion 131b is not an element centered on the rotation axis 107. In this way, when the second transmission gear 152b rotates about the rotation axis 107, the position of the first driving portion 131b will also change.

[0056] Thus, when the second transmission gear 152b rotates, the position of the first driving portion 131b changes, and the first driving portion 131b contacts the impact member 133. The change in the position of the first driving portion 131b drives the impact member 133 to move backward along the first straight line 102. As the impact member 133 moves backward, it compresses the spring 132b, which accumulates energy. When the second transmission gear 152b continues to rotate, the driving member 131a rotates a certain angle and then disengages from the impact member 133, thereby releasing the drive to the impact member 133. At this time, the spring 132b quickly releases energy, thereby driving the impact member 133 to move forward rapidly, thereby driving the striking member 12 connected to the impact member 133 to drive the fastener 201 out.

[0057] In this embodiment, if Figure 5 、 Figure 12 and Figure 13 As shown, the motor 14 is housed within the handle 112. The portion of the handle 112 surrounding the stator assembly 141 is defined as the motor housing 112b. The motor housing 112b is disposed around the motor axis 104. In this embodiment, the left-right dimension L6 of the motor housing 112b is less than or equal to 45 mm. This makes the handle 112 relatively thin, making it easier for the user to grip and more comfortable for operation.

[0058] Specifically, the diameter of the motor 14 is less than or equal to 40 mm. The circumference of the motor housing portion 112b is also less than or equal to 140 mm. In this way, the size of the handle portion 112 can be further reduced, which is more conducive to the user's grip. Among them, the circumference of the motor housing portion 112b refers to the circumference of the outer contour of the motor housing portion 112b. The circumference of the outer contour can be measured by a rope winding method, and the length of a rope used to wrap a rope around the outer contour can be defined as the circumference of the outer contour. It can be understood that those skilled in the art can also use other common methods of measuring circumference.

[0059] The output torque of motor 14 is greater than or equal to 0.0006 N·m and less than or equal to 0.15 N·m. Thus, the output torque of motor 14 is sufficiently high, and after the reduction in speed and torque increase by reduction mechanism 15, this allows fastener driver 100 to utilize a smaller motor 14 while still ensuring that fastener driver 100 has a sufficiently high output torque, thereby improving the output performance of fastener driver 100. In some embodiments, the output torque of motor 14 is greater than or equal to 0.006 N·m and less than or equal to 0.1 N·m.

[0060] In this embodiment, the weight of the fastener driver 100 is also less than or equal to 1.2 kg. Herein, the weight of the fastener driver 100 refers to the weight without installing the battery pack. Among them, the first reduction assembly 151 using the internal gear ring 151f to form the gearbox, the relatively small size of the motor 14, the separate arrangement of the first reduction assembly 151 and the second reduction assembly 152, etc. are all beneficial to reducing the weight of the fastener driver 100. In this embodiment, it is also set that the weight of the power transmission mechanism of the fastener driver 100 is less than or equal to 0.6 kg. The power transmission mechanism includes: the motor 14, the reduction mechanism 15, and the driving member 131a mounted on the second transmission gear 152b. The weight of the power transmission mechanism is the sum of the weights of the motor 14, the reduction mechanism 15, and the driving member 131a mounted on the second transmission gear 152b.

[0061] As Figure 1 and Figure 5 shown, the fastener driver 100 further includes a fan 193. The fan 193 is fixedly connected to the motor shaft 142a and can rotate synchronously with the motor shaft 142a. The fan 193 is arranged at the connection between the handle part 112 and the joint part, so that the dimensions in the length direction of the handle part 112 and the dimensions in the front-rear direction of the joint part can be effectively utilized. It can also be understood that at least part of the fan 193 is arranged inside the handle part 112. The fan 193 is mounted at the lower end of the motor shaft 142a. When the fan 193 rotates, it can generate a heat dissipation air flow that flows into the housing 11 from the outside and then flows out of the housing 11. A circuit board assembly 194 is also arranged inside the joint part. The circuit board assembly 194 is electrically connected to the motor 14 to control the operation of the motor 14. An air flow inlet 115 and an air flow outlet 116 are formed on the housing 11. The air flow inlet 115 corresponds to the position of the fan 193, and the air flow outlet 116 corresponds to the position of the circuit board assembly 194. In this embodiment, a capacitor with a relatively high power is arranged on the circuit board assembly 194. The air flow outlet 116 also corresponds to the position of the capacitor. When the fan 193 rotates, the heat dissipation air flow enters the housing 11 from the air flow inlet 115, then flows through the circuit board assembly 194 and flows out from the air flow outlet 116.

[0062] The circuit board assembly 194 is arranged inside the joint part, and the capacitor is arranged on the upper side of the circuit board assembly 194. Electric connection terminals are arranged on the lower side of the circuit board assembly 194, and the electric connection terminals are used to be electrically connected to the battery pack 300 so that the battery pack 300 supplies power to the motor 14.

[0063] In some embodiments, a partition for separating the motor 14 and the circuit board assembly 194 can also be arranged at the joint part. In this way, the heat generated during the operation of the motor 14 will not enter the circuit board assembly 194.

[0064] As Figure 1, Figure 5 and Figure 6 As shown in Figure 5 and Figure 6 , the handle portion 112 connects the joint portion and the main body portion 111 along the first path. Or it can be considered that the handle portion 112 connects the joint portion and the main body portion 111 in the up and down direction at the rear side of the joint portion and the main body portion 111. The connecting portion 113 is provided at the front side of the handle portion 112 and connects the joint portion and the main body portion 111 along the second path. Or it can be considered that the connecting portion 113 connects the joint portion and the main body portion 111 in the up and down direction at the front side of the joint portion and the main body portion 111. The circuit board assembly 194 is electrically connected to the battery pack 300. The fastener driver 100 further includes: electronic components, which are provided in the main body portion 111, or in the connecting portion 113, or at the upper end of the handle portion 112. For example, the electronic component can be the above-mentioned start switch 192b. The wire 195 electrically connects the electronic component and the circuit board assembly 194, and the wire 195 passes through the connecting portion 113. The wire 195 connects the circuit board assembly 194 and the electronic component by passing through the connecting portion 113, rather than connecting the circuit board assembly 194 and the electronic component by passing through the handle portion 112. In this way, the handle portion 112 does not need to reserve a large space for the wire 195 to pass through, so that the size of the handle portion 112 can be reduced. In this embodiment, the connecting portion 113 is provided at the front side of the handle portion 112, and the connecting portion 113 is used to install the magazine 191, and it can provide extra space for the wire 195 to pass through.

[0065] In some embodiments, the electronic component can be the above-mentioned start switch 192b. The start switch 192b is provided in the handle portion 112 and is located at the upper end of the handle portion 112. The wire 195 includes a first wire 195a connecting the circuit board assembly 194 and the start switch 192b. The first wire 195a extends from the circuit board assembly 194 at the joint portion, passes through the connecting portion 113 and the main body portion 111 in sequence, and then enters the handle portion 112 and is connected to the start switch 192b.

[0066] In some embodiments, the electronic component may be a detection component disposed in the main body 111 to detect the motion state of a moving component, and the wire 195 connects the detection component and the circuit board assembly 194. For example, the detection component is the above-mentioned trigger switch 162, and the trigger switch 162 can detect the position of the trigger member 161. The trigger switch 162 is disposed in the main body 111 and is located above the guide rod 132a. The wire 195 includes a second wire 195b connecting the circuit board assembly 194 and the trigger switch 162. The second wire 195b extends from the circuit board assembly 194 at the joint, passes through the connecting portion 113, and then enters the main body 111 to be electrically connected to the trigger switch 162. For another example, the detection component is a sensor 131c for detecting the position of the impact member 133 or the driving member 131a to determine the corresponding relationship between the impact member 133 and the top dead center position. The wire 195 includes a third wire 195c connecting the circuit board assembly 194 and the sensor 131c. The third wire 195c extends from the circuit board assembly 194 at the joint, passes through the connecting portion 113, and then enters the connection between the main body 111 and the handle portion 112 to be electrically connected to the sensor 131c.

[0067] In some embodiments, the electronic component may also be a lighting component 196 mounted to the main body 111 or the connecting portion 113. In this embodiment, the lighting component 196 is mounted to the main body 111. Thus, the wire 195 further includes a fourth wire 195d connecting the lighting component 196 and the circuit board assembly 194. The fourth wire 195d extends from the circuit board assembly 194 at the joint, passes through the connecting portion 113, and then enters the main body 111 to be electrically connected to the lighting component 196. If the lighting component 196 is mounted to the connecting portion 113, the fourth wire 195d may extend from the circuit board assembly 194 at the joint and enter the connecting portion 113 to be electrically connected to the lighting component 196.

[0068] Such as Figures 7 to 10 , and Figures 14 to 17As shown, the guide rod 132a and the spring 132b are both disposed within the main body portion 111. The energy storage assembly 132 further includes a limiting member 132c, and the limiting member 132c is at least used to limit the rotation of the guide rod 132a. The limiting member 132c is disposed within the main body portion 111 and is located at the front end of the guide rod 132a near the output portion of the striking member 12. The limiting member 132c includes a rotation-preventing surface 132d, and the rotation-preventing surface 132d prevents the guide rod 132a from rotating. The guide rod 132a includes a mating surface 132e that mates with the rotation-preventing surface 132d, and the rotation of the guide rod 132a is restricted through the cooperation between the rotation-preventing surface 132d and the mating surface 132e. In this embodiment, the limiting member 132c is an element formed independently of the housing 11, and this element is fixed to the housing 11 through a connecting member. It can be understood that in other embodiments, the limiting member 132c can also be integrally formed with the housing 11. The cooperation between the rotation-preventing surface 132d and the mating surface 132e restricts the rotation of the guide rod 132a, so that the guide rod 132a will not become loose due to long-term use. In this way, the rotation of the guide rod 132a about the central axis 103 is restricted.

[0069] The fastener driver 100 further includes an adjusting member 197 for user operation, and the adjusting member 197 can adjust the striking force of the fastener driver 100. The adjusting member 197 is disposed at the rear end of the guide rod 132a. The front end of the spring 132b abuts against the impact member 133, and the rear end of the spring 132b abuts against the adjusting member 197. The adjusting member 197 can rotate relative to the guide rod 132a. For example, the adjusting member 197 can form a threaded connection with the guide rod 132a. When the adjusting member 197 is operated, the adjusting member 197 can move relative to the guide rod 132a in the front-rear direction, so as to be able to adjust the tightness of the spring 132b, and further achieve the effect of adjusting the striking force of the fastener driver 100. Among them, the adjusting member 197 needs to rotate relative to the guide rod 132a to move back and forth. If the rotation of the guide rod 132a cannot be stably maintained, the adjustment of the striking force by the adjusting member 197 will be inaccurate. Therefore, by stably restricting the rotation of the guide rod 132a through the rotation-preventing surface 132d, the accuracy of the adjustment of the striking force by the adjusting member 197 can be ensured.

[0070] Specifically, the limiting member 132c is formed with a first limiting hole 132f, and the anti-rotation surface 132d is formed on the hole wall of the first limiting hole 132f. The guide rod 132a is at least partially located in the first limiting hole 132f. Specifically, the guide rod 132a includes a first guide rod portion 132g and a second guide rod portion 132h. The second guide rod portion 132h is substantially cylindrical, and the spring 132b is mounted on the second guide rod portion 132h. The first guide rod portion 132g forms the above-mentioned mating surface 132e. The first guide rod portion 132g is inserted into the first limiting hole 132f so that the mating surface 132e contacts the anti-rotation surface 132d to form a fit. In this embodiment, the anti-rotation surface 132d is a plane parallel to the extending direction of the guide rod 132a. Correspondingly, the mating surface 132e is also a plane parallel to the extending direction of the guide rod 132a. It can be understood that in other embodiments, the anti-rotation surface 132d can also be a curved surface, as long as the anti-rotation surface 132d can prevent the guide rod 132a from rotating around the central axis 103 through cooperation with the mating surface 132e.

[0071] The limiting member 132c further includes a second limiting hole 132i. The dimension of the second limiting hole 132i in a direction perpendicular to the extending direction of the guide rod 132a is smaller than the dimension of the first limiting hole 132f in this linear direction. For example, in this embodiment, as Figure 16 shown, the dimension of the second limiting hole 132i in the up-down direction is smaller than the dimension of the first limiting hole 132f in the up-down direction. The first limiting hole 132f and the second limiting hole 132i communicate with each other. The first limiting hole 132f is provided on the front side of the second limiting hole 132i. The limiting member 132c further includes a stop surface 132j connecting the hole wall of the first limiting hole 132f and the hole wall of the second limiting hole 132i. The stop surface 132j is arranged to prevent the guide rod 132a from moving backward. In this embodiment, the first limiting hole 132f and the second limiting hole 132i are adjacent to each other. The first limiting hole 132f and the second limiting hole 132i form a stepped structure at the connection, and the stop surface 132j is the bottom of the groove of the first limiting hole 132f. Correspondingly, a part of the second guide rod portion 132h is located in the second limiting hole 132i, the first guide rod portion 132g is located in the first limiting hole 132f, and the first guide rod portion 132g is also located in front of the stop surface 132j and abuts against the stop surface 132j. In this way, the stop surface 132j restricts the backward movement of the guide rod 132a by abutting against the first guide rod portion 132g.

[0072] The first guide rod portion 132g is provided at the front end of the second guide rod portion 132h. The first guide rod portion 132g has a first perimeter, and the second guide rod portion 132h has a second perimeter. The second perimeter is smaller than the first perimeter, so that the stepped structure can restrict the first guide rod portion 132g. Herein, the first perimeter refers to the perimeter of the outer surface of the first guide rod portion 132g in the direction around the central axis 103, and the second perimeter refers to the perimeter of the outer surface of the second guide rod portion 132h in the direction around the central axis 103.

[0073] The stop surface 132j is a plane perpendicular to the extending direction of the guide rod 132a. Correspondingly, the first guide rod portion 132g also includes a second mating surface 132k that mates with the stop surface 132j, and the second mating surface 132k is a plane perpendicular to the extending direction of the guide rod 132a.

[0074] As Figure 7 and Figure 8 shown, the housing 11 is further provided with a second stop surface 132l at the front end of the guide rod 132a. The second stop surface 132l is used to cooperate with the front end surface 132m of the guide rod 132a to prevent the guide rod 132a from moving forward.

[0075] As Figures 17 to 19 shown, the trigger assembly 16 is in a prohibited state. At this time, the trigger member 161 is located at a relatively forward first position relative to the housing 11, and the trigger member 161 does not activate the trigger switch 162, so the motor 14 cannot be started. As Figures 20 to 21 shown, the trigger assembly 16 is in a triggered state. At this time, the trigger member 161 moves backward relative to the housing 11 to a second position, and the trigger member 161 activates the trigger switch 162, and the motor 14 is allowed to start.

[0076] The trigger member 161 is at least partially located above the striking member 12. The trigger member 161 includes a abutting surface 161a that abuts against the working surface 200. When the abutting surface 161a abuts against the working surface 200, the user holds the fastener driver 100 and presses the fastener driver 100 relative to the working surface 200. At this time, since the trigger member 161 cannot move forward relative to the working surface 200, the part of the fastener driver 100 other than the trigger member 161 moves forward relative to the trigger member 161 toward the working surface 200. From the perspective of relative movement, in the above process, the trigger member 161 moves backward in the front-rear direction relative to the housing 11 to the second position, so that the trigger member 161 activates the trigger switch 162.

[0077] As Figures 22 to 25 shown, the abutting surface 161a has an upper vertex 161b and a lower vertex 161c that contact the working surface 200. The position where the fastener 201 is driven into the working surface 200 can be regarded as the striking area 201a. As Figure 25The striking area 201a when the fastener 201 is driven into the working surface 200 is shown. In this embodiment, the position where the fastener 201 is shot into the working surface 200 is at least partially located between the upper vertex 161b and the lower vertex 161c in the up-down direction. As Figure 25 shown, the area between the upper vertex 161b and the lower vertex 161c corresponds to the indicated area 200a on the working surface 200, and the striking area 201a is at least partially located within the indicated area 200a. In this embodiment, the position where the fastener 201 enters the working surface 200 is between the upper vertex 161b and the lower vertex 161c in the up-down direction, that is to say, the striking area 201a is located within the indicated area 200a. Thus, when the user operates the fastener driver 100 to perform a striking operation, the striking area 201a where the fastener 201 is struck into the working surface 200 can be determined by observing the area where the striking surface contacts the working surface 200.

[0078] During operation, if the user needs to strike the fastener 201 in the striking area 201a on the working surface 200, as long as the abutting surface 161a of the fastener driver 100 is aligned with the striking area 201a, the fastener 201 can be more accurately driven into the striking area 201a. In this embodiment, the trigger 161 is formed with a guiding area 161d, and the guiding area 161d is used to guide the fastener 201 to be shot out to the striking area 201a. The trigger 161 itself needs to contact the working surface 200. By forming the guiding area 161d by it, it can not only indicate the striking area 201a but also eliminate an element for forming the guiding area 161d.

[0079] Specifically, the trigger 161 includes a guiding main body portion 161e, a first guiding portion 161f, and a second guiding portion 161g. The guiding main body portion 161e extends in a direction parallel to the striking line 101, where the striking line 101 is the moving direction of the striking member 12, and the striking line 101 of the striking member 12 is also parallel to the above-mentioned first line 102. Thus, the guiding main body portion 161e extends in a direction parallel to the first line 102. In this embodiment, the guiding main body portion 161e also extends in a plane parallel to the first line 102 and perpendicular to the up-down direction. That is to say, the guiding main body portion 161e is perpendicular to the up-down direction. The first guiding portion 161f extends from the left side of the guiding main body portion 161e in a direction perpendicular to the striking line 101. In this embodiment, the first guiding portion 161f extends downward from the left side of the guiding main body portion 161e. The second guiding portion 161g extends from the right side of the guiding main body portion 161e in a direction perpendicular to the striking line 101. In this embodiment, the second guiding portion 161g extends downward from the right side of the guiding main body portion 161e. Thus, the guiding main body portion 161e is disposed between the first guiding portion 161f and the second guiding portion 161g and connects the first guiding portion 161f and the second guiding portion 161g. A guiding area 161d for guiding the fastener 201 is formed between the first guiding portion 161f and the second guiding portion 161g. In this embodiment, the cross-section of the trigger 161 in a plane perpendicular to the first line 102 is substantially U-shaped, and the fastener 201 is disposed in the guiding area 161d. The first guiding portion 161f and the second guiding portion 161g guide the fastener 201 to be ejected in the striking direction.

[0080] In this embodiment, the fastener 201 is Figure 2 the U-shaped nail in. When the U-shaped nail is located in the guiding area 161d, the upper surface of the U-shaped nail contacts the guiding main body portion 161e, the first leg portion 201b of the U-shaped nail contacts the first guiding portion 161f, and the second leg portion 201c of the U-shaped nail contacts the second guiding portion 161g. The contact between the first guiding portion 161f and the first leg portion 201b can not only guide the U-shaped nail to be ejected along the striking line 101 direction, but also resist the first leg portion 201b to prevent the first leg portion 201b from expanding outward and deforming. The contact between the second guiding portion 161g and the second leg portion 201c can not only guide the U-shaped nail to be ejected along the striking line 101 direction, but also resist the second leg portion 201c to prevent the second leg portion 201c from expanding outward and deforming. Thus, the distance between the two guiding members is substantially the same as the width of the fastener 201, thereby preventing the fastener 201 from deforming.

[0081] The guiding main body part 161e is arranged on the upper side of the guiding area 161d, so that the guiding area 161d not only opens forward to allow the fastener 201 to be shot forward, but also opens downward to allow the fastener 201 to enter the guiding area 161d from the magazine 191.

[0082] As Figure 17 , Figures 22 to 25 shown, the magazine 191 includes a lifting part 191a, and the lifting part 191a is used to abut against the fastener 201 to drive the fastener 201 to move into the guiding area 161d.

[0083] As Figure 25 shown, a part within 10 mm from the foremost end of the trigger assembly 16 can also be defined as the trigger part 161h, and the foremost end of the trigger part 161h forms an abutting surface 161a. The projection of the trigger part 161h in the plane perpendicular to the front-back direction has an upper vertex 161b and a lower vertex 161c, and the position where the fastener 201 is shot into the working surface 200 is at least partially located between the upper vertex 161b and the lower vertex 161c in the up-down direction. As we know, when the user performs a striking operation, usually at a certain distance from the working surface 200. At this time, if the upper vertex 161b and the lower vertex 161c are not arranged at the abutting surface 161a, but at any place of the trigger part 161h closer to the abutting surface 161a, it can play an indicating role for the user.

[0084] As Figure 18 and Figure 19 shown, the impact part 133 is located at the bottom dead center position where the impact striker 12 moves to the foremost side. As Figure 20 and Figure 21 shown, the impact part 133 is located at the top dead center position where the compression spring 132b is compressed to the shortest state.

[0085] When the impact part 133 is at the bottom dead center position, the spring 132b is in the longest state and releases energy. When the impact part 133 is at the top dead center position, the spring 132b is compressed to the shortest state by the impact part 133 and stores energy.

[0086] The impact part 133 is driven by the driving part 131a to move from the bottom dead center position to the top dead center position. Specifically, as Figures 26 to 28As shown, the driving member 131a includes the above-mentioned first driving portion 131b, and the first driving portion 131b is used to drive the impact member 133 to move backward. Correspondingly, the impact member 133 includes a first lifting portion 133a that cooperates with the first driving portion 131b to move backward, and the first lifting portion 133a includes a first lifting surface 133b that contacts the first driving portion 131b. The first lifting surface 133b is an inclined surface that is inclined relative to the extending direction of the spring 132b. That is to say, the first lifting surface 133b is an inclined surface that is inclined relative to the first straight line 102. The driving member 131a further includes a second driving portion 131d, and the second driving portion 131d is also used to drive the impact member 133 to move backward. Correspondingly, the impact member 133 includes a second lifting portion 133c that cooperates with the second driving portion 131d to move backward, and the second lifting portion 133c includes a second lifting surface 133d that contacts the second driving portion 131d. Among them, during the lifting process of the impact member 133, the first driving portion 131b first cooperates with the first lifting portion 133a to drive the impact member 133 to move backward a certain distance from the bottom dead center to the first stroke position, and then the second driving portion 131d cooperates with the second lifting portion 133c to drive the impact member 133 to continue moving backward from the first stroke position until it reaches the top dead center.

[0087] In this embodiment, the driving member 131a is formed on the second transmission gear 152b, that is, the first driving portion 131b and the second driving portion 131d are arranged on the second transmission gear 152b. The distance between the first driving portion 131b and the rotation axis 107 of the second transmission gear 152b is the same as the distance between the second driving portion 131d and the rotation axis 107 of the second transmission gear 152b. The first driving portion 131b and the second driving portion 131d are cylinders with substantially the same diameter. In this way, when the second transmission gear 152b rotates around its rotation axis 107, the first driving portion 131b and the second driving portion 131d also revolve around the rotation axis 107. When the first driving portion 131b and the second driving portion 131d rotate around the rotation axis 107, they will respectively contact the first lifting portion 133a and the second lifting portion 133c to drive the impact member 133 to move backward along the first straight line 102.

[0088] The principle of setting the first lifting surface 133b as an inclined surface in this embodiment will be described below. As Figure 26 and Figure 29As shown, after the first driving part 131b drives the impact part 133 to move backward by a certain distance, the first driving part 131b can be disengaged from the first lifting surface 133b. After long-term creative labor research, the inventor found that when the first lifting surface 133b is a plane perpendicular to the direction of the first straight line 102, when the first driving part 131b is disengaged from the first lifting surface 133b, the second driving part 131d starts to contact the second lifting surface 133d. At this time, on the one hand, jamming may occur between the driving part 131a and the impact part 133. More importantly, there will be a torque mutation as shown in Figure 30 , which will cause the impact part 133 to move backward unstably. In this application, the first lifting surface 133b is set as an inclined plane, as shown in Figure 31 . The torque will not mutate, which will make the impact part 133 move backward more smoothly and stably.

[0089] As shown in Figure 29As shown, specifically, when the second transmission gear 152b rotates until the first drive portion 131b moves to the O4 position (the first drive portion 131b is a cylinder, and O4 is the center of the circle of the first drive portion 131b), the second transmission gear 152b will continue to rotate, causing the first drive portion 131b to continue to move and is about to separate from the first lifting surface 133b. Similarly, at this time, the second drive portion 131d is about to move to a position of contact with the second lifting portion 133c. Then, the first drive portion 131b moves from the O4 position to the O5 position. When the first drive portion 131b is at the O4 position, the first contact point of the first drive portion 131b and the first lifting surface 133b is A. The first contact point A is a point on the first lifting surface 133b that is located at a first horizontal position in the front-to-back direction. When the first driving portion 131b is at position O5, the second contact point between the first driving portion 131b and the first lifting surface 133b is B. The second contact point A is located at the second horizontal position on the first lifting surface 133b in the front-to-back direction. The first horizontal position and the second horizontal position are different, that is, the first contact point A and the second contact point B are located at different positions in the front-to-back direction. When the first driving portion 131b moves from position O4 to position O5, the first driving portion 131b rotates, generating a horizontal displacement component D1 along the first straight line 102. The horizontal displacement component D2 of the line connecting the first contact point A and the second contact point B of the first lifting surface 133b is substantially the same. Therefore, the horizontal displacement components D1 and D2 cancel each other out, resulting in the first lifting surface 133b remaining essentially unchanged in the direction of the first straight line 102 when the first driving portion 131b moves from position O4 to position O5. In this way, when the first driving part 131b moves from the O4 position to the O5 position, the second driving part 131d contacts the second lifting surface 133d, which can make the cooperation between the driving member 131a and the impact member 133 smoother and avoid interference and jamming.

[0090] In some embodiments, the first lifting surface 133b may be a curved surface, and the horizontal displacement component of the curved surface may also be offset by the horizontal displacement component of the movement of the first driving portion 131b to achieve substantially the same effect.

[0091] In some embodiments, the first lifting surface 133b is an arc having a predetermined radius, where the predetermined radius is equal to the sum of the distance R1 between the second transmission gear 152b and the center O4 of the first driving portion 131b and the radius R2 of the first driving portion 131b. Thus, the first driving portion 131b maintains substantially stable contact with the first lifting surface 133b during its movement from position O4 to position O5.

[0092] In this embodiment, the second lifting surface 133d is also an inclined surface. In this way, during the process of the second driving part 131d contacting the second lifting surface 133d, it can partially overlap with the process of the first driving part 131b contacting the first lifting surface 133b, thereby improving the smooth movement of the impact part 133. In some embodiments, the second lifting surface 133d can also be a curved surface.

[0093] In some embodiments, the second lifting surface 133d can also be a plane perpendicular to the extending direction of the spring 132b.

[0094] In some embodiments, it can also be that the second lifting surface 133d is an inclined surface inclined relative to the extending direction of the spring 132b, while the first lifting surface 133b is a plane perpendicular to the extending direction of the spring 132b, which also makes the movement of the impact part 133 more stable.

[0095] In this embodiment, the included angle formed by the plane where the inclined surface is located and the extending direction of the spring 132b is greater than or equal to 50 degrees and less than or equal to 85 degrees.

[0096] In some embodiments, the included angle formed by the plane where the inclined surface is located and the extending direction of the spring 132b is greater than or equal to 10 degrees and less than or equal to 80 degrees. In some embodiments, the included angle formed by the plane where the inclined surface is located and the extending direction of the spring 132b is greater than or equal to 60 degrees and less than 90 degrees.

[0097] In this embodiment, the first driving part 131b and the second driving part 131d are cylinders with substantially the same height.

[0098] Such as Figure 32 and Figure 33 shown are the driving part 431a and the impact part 433 of another embodiment. In this embodiment, the heights of the first driving part 431b and the second driving part 431d are different. The positions of the first lifting surface 433b and the second lifting surface 433d on the corresponding impact part 433 are also different in the up and down directions. Among them, the first lifting surface 433b is an inclined surface inclined relative to the extending direction of the spring 132b, and the second lifting surface 433d is a plane perpendicular to the extending direction of the spring 132b. It can be understood that it can also be that the second lifting surface 433d is an inclined surface inclined relative to the extending direction of the spring 132b, and the first lifting surface 433b is a plane perpendicular to the extending direction of the guide rod 132a. Or, both the first lifting surface 433b and the second lifting surface 433d are inclined surfaces inclined relative to the extending direction of the spring 132b.

[0099] In this embodiment, the sensor 131c is used to detect the position of the impact member 133 or the driving member 131a to determine the correspondence between the impact member 133 and the top dead center position. When the sensor 131c detects that the impact member 133 reaches the top dead center, the controller controls the motor 14 to stop. The sensor 131c can be a Hall sensor. The controller obtains the stop signal of the Hall sensor. The controller is configured not to obtain the stop signal within a preset time or a preset number of turns after the motor 14 starts. The controller not obtaining the stop signal includes at least three situations. The first situation is that the Hall sensor does not detect the position of the impact member 133 or the driving member 131a within the preset time or the preset number of turns. The second situation is that the Hall sensor detects the position of the impact member 133 or the driving member 131a within the preset time or the preset number of turns, but the controller does not obtain the signal of the Hall sensor. The third situation is that the Hall sensor detects the position of the impact member 133 or the driving member 131a within the preset time or the preset number of turns, and the controller also obtains the signal of the Hall sensor but does not control the motor 14 to stop. It can be understood that there can be other situations where the controller does not obtain the stop signal, as long as these situations conform to the essential principle of this application, they fall within the scope protected by this application. In this way, the situation of stopping due to various interferences can be avoided, and the reliability of the fastener driver 100 is improved.

[0100] As Figure 9 and Figure 10 shown, the fastener driver 100 further includes a lighting switch 196a for activating the lighting element 196. The lighting switch 196a is arranged in the holding portion, adjacent to the start switch 192b, and both are located at the rear side of the trigger 192. The lighting switch 196a is also arranged to be activated by the trigger 192. Among them, the lighting switch 196a is further arranged to be activated by the trigger 192 before the start switch 192b. In this way, the lighting element 196 can be lit before the fastener driver 100 starts, so as to facilitate illuminating the working area.

[0101] Specifically, in the front-rear direction, the start switch 192b is relatively farther from the trigger 192 than the lighting switch 196a. In this way, when the trigger 192 rotates or moves, it will first contact the lighting switch 196a to light the lighting element 196, and then contact the start switch 192b to start the fastener driver 100.

[0102] In some cases, the user can operate the trigger 192 to rotate or move only a little angle or distance and keep the position of the trigger 192. In this way, the trigger 192 can only trigger the lighting switch 196a without triggering the start switch 192b, so that only the lighting element 196 can be lit to illuminate the working area.

[0103] The basic principles, main features, and advantages of this application have been shown and described above. Those skilled in the art should understand that the above embodiments do not limit this application in any form. Any technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A fastener driver, comprising: A striking member for driving a fastener into a working surface; A driving mechanism including an impact member for driving the striking member and an energy storage assembly for impacting the impact member when releasing energy; A motor for driving the driving mechanism; A housing including a main body portion for accommodating at least part of the energy storage assembly and a handle portion for a user to hold; A speed reduction mechanism connecting the motor and the driving mechanism to transmit the power output by the motor to the driving mechanism; The energy storage assembly includes: A spring for driving the impact member to move forward when releasing energy; The driving mechanism includes: A driving member for driving the impact member to move backward to compress the spring; The driving member includes a driving portion for driving the impact member, and the impact member includes a lifting portion for cooperating with the driving portion to move backward. The lifting portion includes a lifting surface in contact with the driving portion; Wherein, the lifting surface is a curved surface or an inclined surface inclined relative to the extending direction of the spring.

2. The fastener driver according to claim 1, wherein The driving member further includes a second driving portion for driving the impact member, and the impact member includes a second lifting portion for cooperating with the second driving portion to move backward. The second lifting portion includes a second lifting surface in contact with the second driving portion, and the second lifting surface is a curved surface or an inclined surface inclined relative to the extending direction of the spring.

3. The fastener driver according to claim 1, wherein, The driving member further includes a second driving portion for driving the impact member, and the impact member includes a second lifting portion for cooperating with the second driving portion to move backward. The driving portion cooperates with the lifting portion to drive the driving member to move backward from the bottom dead center to the first stroke position, and the second driving portion cooperates with the second lifting portion to drive the driving member to move backward from the first stroke position to the top dead center.

4. The fastener driver according to claim 3, wherein, The second lifting portion includes a second lifting surface in contact with the second driving portion, and the second lifting surface is a plane perpendicular to the extending direction of the spring.

5. The fastener driver according to claim 1, characterized in that, The driving member further includes a second driving portion for driving the impact member, and the impact member includes a second lifting portion for cooperating with the second driving portion to move backward. The second driving portion cooperates with the second lifting portion to drive the driving member to move backward from the bottom dead center to the first stroke position, and the driving portion cooperates with the lifting portion to drive the driving member to move backward from the first stroke position to the top dead center.

6. The fastener driver according to claim 5, wherein The second lifting portion includes a second lifting surface in contact with the second driving portion, and the second lifting surface is a plane perpendicular to the extending direction of the spring.

7. The fastener driver according to claim 1, wherein The included angle formed by the plane where the inclined surface is located and the extending direction of the spring intersects obliquely is greater than or equal to 50 and less than or equal to 85.

8. The fastener driver according to claim 2, wherein The driving portion and the second driving portion have the same height in the up and down direction.

9. The fastener driver according to claim 1, wherein The driving member further includes a second driving portion for driving the impact member, and the impact member includes a second lifting portion for cooperating with the second driving portion to move backward. The second lifting portion includes a second lifting surface in contact with the second driving portion, and the second lifting surface is a plane perpendicular to the extending direction of the spring.

10. The fastener driver according to claim 9, wherein The driving portion and the second driving portion have different heights in the up and down direction.

11. A fastener driver, comprising: A striking member for driving a fastener into a working surface; A driving mechanism including an impact member for driving the striking member and an energy storage assembly for impacting the impact member when releasing energy; A motor for driving the driving mechanism; A housing including a main body portion for accommodating at least part of the energy storage assembly and a handle portion for a user to hold; A speed reduction mechanism connecting the motor and the driving mechanism to transmit the power output by the motor to the driving mechanism; The energy storage assembly includes: A spring for driving the impact member to move forward when releasing energy; The speed reduction mechanism includes: A driving member for driving the impact member to move backward to compress the spring; The driving member includes a driving portion for driving the impact member, and the impact member includes a lifting portion for cooperating with the driving member to move backward, and the lifting portion includes a lifting surface in contact with the driving portion; Wherein, the lifting surface includes: A first contact point in contact with the driving portion and located at a first position in the front-rear direction; A second contact point in contact with the driving portion and located at a second position in the front-rear direction.

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