Torque output tool

Abstract

The present invention provides a torque output tool, comprising a housing; a motor, arranged in the housing; an output shaft, which can be connected to and drive a working accessory to rotate; a transmission assembly, comprising: a driving wheel, which can be driven by the motor to drive the output shaft to rotate around a first axis; a shaft locking ring, which is arranged around the output shaft; a plurality of locking columns, which are arranged in the shaft locking ring and around the output shaft; the torque output tool also includes: a separator, which is arranged between the driving wheel and the shaft locking ring, and the separator is used to separate the locking column and the driving wheel. The torque output tool is used to improve the accuracy of the installation structure of the working accessory.

Description

Technical Field

[0001] The present invention relates to a power tool, and more particularly to a torque output tool. Background Art

[0002] The torque output tool is provided with a transmission assembly for installing and disassembling accessories. The cooperation of a driving wheel, a shaft lock ring and a locking column realizes the movement of the locking column between a locking position and an unlocking position to quickly install or disassemble the accessories. The locking column contacts the driving wheel. Due to the requirement of design strength, the surface of the driving wheel in contact with the locking column usually has pits, resulting in the contact surface between the driving wheel and the end face of the shaft lock column not being a plane, so that the locking column is prone to tilt relative to the driving wheel, resulting in the locking column not being accurately pushed to the corresponding locking position and unlocking position. Summary of the Invention

[0003] To solve the deficiencies of the prior art, the object of the present invention is to provide a torque output tool, which is used to improve the accuracy of the installation structure for installing working accessories.

[0004] To achieve the above main object of the invention, the present invention provides a torque output tool, including a housing; a motor disposed in the housing; an output shaft capable of connecting and driving a working accessory to rotate; a transmission assembly including: a driving wheel capable of being driven by the motor to drive the output shaft to rotate around a first axis; a shaft lock ring disposed around the output shaft; a plurality of locking columns disposed in the shaft lock ring and around the output shaft; the torque output tool further includes: a separator disposed between the driving wheel and the shaft lock ring, and the separator is used to separate the locking column and the driving wheel.

[0005] Optionally, a plurality of dial blocks are further provided on the side of the driving wheel close to the locking column, and the dial blocks are located between the shaft lock ring and the output shaft.

[0006] Optionally, the separator includes a main body portion and an extension portion. The main body portion is an annular gasket with a through hole in the middle. The extension portion extends towards the through hole. The number of the extension portions is the same as the number of the locking columns, and the extension portion can contact the locking column.

[0007] Optionally, an opening is formed between adjacent extension portions, and the dial block is inserted into the opening.

[0008] Optionally, the locking column has at least a locking position and an unlocking position relative to the shaft lock ring. Among them, when the locking column is in the locking position, the locking column locks the rotation of the output shaft relative to the housing. When the locking column is in the unlocking position, the locking column releases the rotation of the output shaft; the dial block is used to toggle to switch the locking column between the locking position and the unlocking position.

[0009] Optionally, the separator is a gasket with a flat end face.

[0010] Optionally, the torque output tool further includes a gearbox, which includes a first gearbox and a second gearbox. The drive wheel and the shaft lock ring are located in the second gearbox. The transmission assembly further includes: a first planetary gear set, including: a first planetary gear, a first planetary gear carrier, and a first-stage internal gear ring. The first planetary gear is driven by the motor. The first planetary gear carrier is used to mount the first planetary gear. The first-stage internal gear ring meshes with the first planetary gear; a second planetary gear set, which includes: a second planetary gear and a second planetary gear carrier. The second planetary gear carrier is used to mount the second planetary gear; the first gearbox is arranged at one end of the motor and supports the motor.

[0011] Optionally, the transmission assembly further includes a positioning member, which is supported by the first gearbox and positions the first-stage internal gear ring in the direction of the first axis.

[0012] Optionally, the dimension of the gearbox in the direction of the first axis is greater than or equal to 43 mm and less than or equal to 55 mm.

[0013] Optionally, the second planetary gear set further includes a second-stage internal gear ring. The transmission assembly further includes a third planetary gear set, which includes a third planetary gear, a drive wheel, and a third-stage internal gear ring. The drive wheel is used to mount the third planetary gear. The third-stage internal gear ring meshes with the third planetary gear. The drive wheel meshes with the output shaft.

[0014] Advantageous effects: By arranging a spacer between the drive wheel and the shaft lock ring, the present invention reduces the wear of the drive wheel. And due to the arrangement of the spacer, the movement of the locking post is more stable, improving the overall performance of the torque output tool. Description of the Drawings

[0015] Figure 1 is a schematic perspective view of the torque output tool provided by the first embodiment of the present invention;

[0016] Figure 2 is Figure 1 the schematic cross-sectional view of the torque output tool provided;

[0017] Figure 3a is Figure 1 the exploded schematic view of a partial structure of the transmission assembly of the torque output tool provided;

[0018] Figure 3b is Figure 1 the schematic cross-sectional view of the transmission assembly of the torque output tool provided with the locking post in the unlocked position;

[0019] Figure 3c is Figure 1 the schematic cross-sectional view of the transmission assembly of the torque output tool provided with the locking post in the locked position;

[0020] Figure 4 isFigure 1 Schematic structural diagram of the spacer and the transmission wheel of the provided torque output tool;

[0021] Figure 5 is Figure 1 Schematic structural diagram of the spacer of the provided torque output tool;

[0022] Figure 6 is Figure 1 Schematic cross-sectional view of the transmission assembly of the provided torque output tool;

[0023] Figure 7 is Figure 1 Explosion schematic diagram of a part of the transmission assembly of the provided torque output tool;

[0024] Figure 8 is Figure 1 Schematic diagram of the first gearbox of the provided torque output tool;

[0025] Figure 9 is Figure 1 Schematic diagram of the spacer limiting the first-stage internal gear ring of the provided torque output tool;

[0026] Figure 10 Stereo structural diagram of the transmission assembly of the torque output tool provided in the second embodiment of the present invention;

[0027] Figure 11 is Figure 10 Schematic planar body structure diagram of the transmission assembly of the provided torque output tool. Detailed implementation manners

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] The technical solution of the present invention will be further described below with reference to the drawings and through specific implementation manners. Figure 1 The torque output tool 100 of the first embodiment shown is a torque output type tool, which is a handheld electric tool. The torque output tool 100 of the present invention takes an electric screwdriver as an example; of course, the torque output tool 100 can also be other tools that can output torque, such as an electric drill, or a tool with both screwdriver and electric drill functions, or other tools that convert torque into other forms of motion.

[0030] Refer to Figure 2, the torque output tool 100 may include: a housing 110, a motor 120, a transmission assembly 200, and an output assembly. The motor 120 is accommodated in the housing 110 and is configured to convert the energy provided by an energy source into power and output it to the transmission assembly 200. The motor 120 includes a rotor shaft 121 that rotates about a first axis 101.

[0031] The transmission assembly 200 is disposed between the motor 120 and the output assembly and is configured to transmit power between the motor 120 and the output assembly. The output assembly may directly output power to a workpiece to be operated; the output assembly may also be connected to a tool accessory 111 to drive the workpiece through the tool accessory 111, thereby realizing the tool function of the torque output tool 100. In this embodiment, the output assembly includes: an output shaft 130 and a working accessory 111 connected to the output shaft 130. The working accessory 111 may be a clamping device. The output shaft 130 can rotate relative to the housing 110 about the first axis 101, and the clamping device is mounted on the output shaft 130 and can rotate synchronously with the output shaft 130 to output power. For an electric screwdriver, the clamping device can clamp a bit.

[0032] Referring to Figures 3a to 5 , the transmission assembly 200 includes: a shaft lock ring 220, a locking post 230, and a driving wheel 210. The driving wheel 210 is sleeved on the output shaft 130 and rotates synchronously with the output shaft 130. The output shaft 130 has a transmission portion that cooperates with a driving hole 213, and the transmission portion is specifically an external hexagonal portion. The shaft lock ring 220 is fixedly disposed in the housing 110 and cannot rotate relative to the housing 110. The shaft lock ring 220 is sleeved around the output shaft 130, and an accommodating space is formed between the shaft lock ring 220 and the output shaft 130. The locking post 230 is located at the accommodating space formed between the shaft lock ring 220 and the output shaft 130.

[0033] The driving wheel 210 further includes a wheel body, and the wheel body generally presents a disc-like structure. A dial block 211 is formed on one side of the wheel body close to the locking post 230, and the dial block 211 is located in the accommodating space between the shaft lock ring 220 and the output shaft 130. The wheel body of the driving wheel 210 also forms a driving hole 213, and the transmission portion of the output shaft 130 extends into the driving hole 213. In this embodiment, the transmission portion of the output shaft 130 is an external hexagonal portion, and the corresponding driving hole 213 is an eighteen-sided hole that can be used to allow the transmission portion to be in the driving hole 213 and can rotate relative to the driving wheel 210 within a preset angle range. Of course, the specific structure of the driving hole 213 is not limited thereto, as long as the structure of the driving hole 213 can allow the transmission portion to rotate relative to the driving wheel 210 within a preset angle range within the scope of the present invention. The transmission portion of the output shaft 130 is not limited to an external hexagonal portion, and the transmission portion of the output shaft 130 may also be other transmission structures.

[0034] The locking post has at least a locking position and an unlocking position relative to the shaft locking ring 220. When the locking post is in the locking position, the locking post locks the rotation of the output shaft 130 relative to the housing 110. When the locking post is in the unlocking position, the locking post releases the rotation of the output shaft 130. The shifting block 211 is used to shift to switch the locking post between the locking position and the unlocking position.

[0035] The shaft locking ring 220 is formed with an inner wall surface centered on the first axis 101, and the inner wall surface forms the above-mentioned accommodating space around the output shaft 130. The outer periphery of the output shaft 130 includes a first surface and a second surface. The first surface is parallel to the first axis 101, and the second surface is centered on the first axis 101. The locking post 230 is a cylindrical pin, and the cylindrical pin is arranged between the first surface and the inner wall surface. In this embodiment, in order to improve the stability, the number of the first surfaces is 3, and the number of the second surfaces is also 3. The first surfaces and the second surfaces are sequentially arranged at intervals in the circumferential direction around the first axis 101. Correspondingly, the number of the locking posts is also 3, and the number of the shifting blocks 211 is also 3. The three shifting blocks 211 are respectively located between two adjacent locking posts to push the locking posts to move in the circumferential direction around the first axis 101. Refer to Figure 3b , when the locking post 230 is in the unlocking position, the locking post 230 does not contact the inner wall surface and the first surface at the same time. At this time, the driving wheel 210 can drive the output shaft 130 to rotate relative to the housing 110 along the first direction. Refer to Figure 3c , and when the locking post 230 is in the locking position, the locking post 230 can contact the inner wall surface and the first surface at the same time. At this time, the position of the locking post 230 in the circumferential direction around the first axis 101 is stuck, and at this time, the rotation of the output shaft 130 relative to the housing 110 is locked. Thus, at this time, the user cannot make the output shaft 130 mechanism rotate relative to the housing 110 from the side where the output assembly is located. Thus, at this time, the user can disassemble the clamping device.

[0036] The torque output tool 100 further includes a separator 240, which is arranged between the driving wheel 210 and the shaft locking ring 220, and the separator 240 is used to separate the locking post 230 and the driving wheel 210. At the same time, the separator 240 can separate the driving wheel 210 and the shaft locking ring 220. The driving wheel 210 includes a third surface provided with the shifting block 211, and the separator 240 is arranged to contact the third surface. Since the hardness of the driving wheel 210 is relatively low, if the driving wheel 210 and the shaft locking ring 220 are in direct contact without the separator 240, the friction generated by the relative movement between the driving wheel 210 and the shaft locking ring 220 will cause wear on the end face of the driving wheel 210.

[0037] The spacer 240 includes a main body portion 241 and an extension portion 242. The main body portion 241 is an annular gasket with a through hole 243 in the middle. The extension portion 242 extends towards the through hole 243 in the middle of the annular gasket. The number of the extension portions 242 is the same as the number of the locking posts 230, and the extension portions 242 can contact the locking posts 230. The spacer 240 is arranged to fit on the third surface of the driving wheel 210 having the lugs 211. At the same time, the other side of the spacer 240 opposite to the third surface abuts against the locking posts 230, specifically by the extension portions 242 abutting against the locking posts 230. And the extension portions 242 are arranged between the lugs 211, so that the lugs 211 and the extension portions 242 are arranged at intervals of two by two. An opening 244 is formed between adjacent extension portions 242, and the lugs 211 are inserted into the opening 244. The shape of the through hole 243 matches the driving hole 213, so that the output shaft 130 can pass through the through hole 243.

[0038] Since the driving wheel 210 is provided with lugs 211 on the third surface, due to the influence of the process and the strength requirement of the driving wheel 210, the third surface of the driving wheel 210 often has grooves, making the third surface uneven. If the spacer 240 is not provided, the locking posts 230 directly abut against the third surface. When the locking posts 230 are switched to the locking position and the unlocking position, the locking posts 230 are toggled by the lugs 211 to move relative to the third surface. The uneven third surface will affect the movement process of the locking posts 230, making the locking posts 230 prone to tilt relative to the driving wheel 210, so that the locking posts 230 cannot be accurately pushed to the corresponding locking position and unlocking position, thus affecting the performance of the torque output tool 100. Therefore, the surface of the spacer 240 in this embodiment is flat, and the spacer 240 is a gasket with a flat end face, so that the surface for clamping the locking posts 230 is flat, thereby improving the stability of the transmission mechanism of the torque output device.

[0039] Refer to Figure 6 , the transmission assembly 200 further includes a planetary gear train for speed reduction. At the same time, the torque output tool 100 further includes a gear box 250. The gear box 250 includes a first gear box 251 and a second gear box 252. At least part of the planetary gear train is arranged in the first gear box 251, and the shaft lock ring 220, the driving wheel 210 and the locking posts 230 are arranged in the second gear box 252. The number of the planetary gear trains can be one stage or multiple stages. Here, taking the planetary gear train as three stages as an example, the specific structure of this embodiment is introduced.

[0040] Refer to Figure 6 and Figure 7, the transmission assembly 200 includes a first planetary gear set 260, a second planetary gear set 270, and a third planetary gear set 290. The first planetary gear set 260 includes a first planetary gear 261 and a first planetary gear carrier 262. The second planetary gear set 270 includes a second planetary gear 271 and a second planetary gear carrier 272. The transmission assembly 200 includes a sun gear, which is connected to the motor 120 and driven by the motor 120 to rotate. The first planetary gear 261 is disposed to mesh with the sun gear. The third planetary gear set 290 includes a third planetary gear 291, a driving wheel 210, and a third-stage internal gear ring 292. The driving wheel 210 is used to mount the third planetary gear 291, and the driving wheel 210 meshes with the output shaft 130. The third-stage internal gear ring 292 meshes with the third planetary gear 291; the second planetary gear set 270 is disposed between the first planetary gear set 260 and the third planetary gear set 290.

[0041] The first gearbox 251 includes a front end and a rear end. The gearbox 250 is disposed at one end of the motor 120, and the rear end of the first gearbox 251 supports the rotor shaft 121 of the motor 120. The front end of the first gearbox 251 is open and communicates with the interior of the second gearbox 252.

[0042] Referring to Figures 6 to 9 , the transmission assembly 200 further includes a first-stage internal gear ring 263, which is disposed within the housing 110 assembly. The first-stage internal gear ring 263 meshes with the first planetary gear 261. There are multiple first planetary gears 261, and the multiple first planetary gears 261 are all disposed to mesh with the sun gear. The motor 120 drives the first planetary gears 261 to rotate through the sun gear. The sun gear and the first planetary gears 261 form meshing teeth for transmitting power. The pitch diameter of the outside circle of the teeth of the sun gear is set to be smaller than the pitch diameter of the outside circle of the teeth of the first planetary gears 261, so that the number of teeth of the meshing teeth of the first planetary gears 261 is greater than the number of teeth of the meshing teeth of the sun gear.

[0043] The first planetary gear carrier 262 includes a transmission disk, a support frame, and a first output portion 266. The support frame and the first output portion 266 are respectively formed on both sides of the transmission disk. The support frame is inserted into the first planetary gear 261 and forms a rotational connection with the first planetary gear 261, so that the first planetary gear 261 can drive the first planetary gear carrier 262 to rotate around the first axis 101 during operation. Meshing teeth are formed on the circumferences of the transmission disk and the first output portion 266. The first output portion 266 is used to mesh with the second planetary gear set 270, thereby realizing the transmission connection between the first planetary gear set 260 and the second planetary gear set 270.

[0044] A plurality of second planet gears 271 are provided and are in external engagement with the first output portion 266, that is, the first output portion 266 of the first planet gear set 260 constitutes the sun gear of the second planet gear 271. The transmission assembly 200 further includes a second-stage internal gear ring 273, and internal teeth are formed on the inner circumference of the second-stage internal gear ring 273. The second-stage internal gear ring 273 and the second planet gear 271 are in meshing connection. The second planet gear 271 and the second planet gear carrier 272 are in rotational connection, and the second planet gear carrier 272 forms a second output portion connected to the output shaft 130. The output shaft 130 includes a flat portion 264 that cooperates with the second output portion, and a part of the output shaft 130 is placed between the second output portions, so as to realize the synchronous rotation of the output shaft 130 and the second output portion.

[0045] The second-stage internal gear ring 273 and the second planet gear 271 are meshed. The second-stage internal gear ring 273 includes a plurality of first locking teeth 274. The transmission assembly further includes a switching member, and the switching member includes second locking teeth that cooperate with the first locking teeth 274. The switching member can be moved to at least a first position and a second position. When the switching member is in the first position, the second locking teeth and the second internal gear ring are staggered in the circumferential direction of the first axis 101; when the switching member is in the second position, the second locking teeth and the first locking teeth 274 are disengaged in the circumferential direction of the first axis 101. When the switching member is in the first position, the second locking teeth limit the rotation of the second-stage internal gear ring 273 by abutting against the first locking teeth 274, that is, the second-stage internal gear ring 273 is non-rotatable relative to the first gearbox 251 around the first axis 101 at this time. At this time, the second-stage planet gear set plays a speed reduction role, and the transmission assembly 200 outputs a first transmission ratio overall. When the switching member is moved to the second position, the second locking teeth and the first locking teeth 274 no longer abut, so that the second-stage internal gear ring 273 can rotate relative to the first gearbox 251, so that the second-stage internal gear ring 273 and the second planet gear 271 rotate synchronously, and the second-stage planet gear set does not have a speed reduction effect. At this time, the transmission assembly 200 outputs a second transmission ratio overall, and the first transmission ratio is greater than the second transmission ratio.

[0046] The switching member can be an annular body, and the annular body is provided with second locking teeth. The switching member forms a mating portion that mates with the first gearbox 251, so that the housing 110 limits the non-rotation of the switching member relative to the housing 110 through the mating with the mating portion of the switching member. The switching member is fixed to the first gearbox 251 and can be moved to the first position and the second position relative to the first gearbox 251.

[0047] The torque output tool 100 further includes a positioning member 280, which is supported by the first gearbox 251 and positions the first-stage internal gear ring 263 in the direction of the first axis 101. The positioning pin 281 extends along the direction of the first axis 101. Extending along the direction of the first axis 101 means extending along the axial direction of the first axis 101 or along the axial direction parallel to the first axis. Through the cooperation of the positioning member 280 and the first gearbox 251, the first axis 101 is positioned together, and there is no need for the first gearbox 251 to position the first-stage internal gear ring 263 alone. Thus, the front end of the first gearbox 251 can be opened to shorten the size of the first gearbox 251.

[0048] The gearbox 250 further forms a mounting groove 253, which extends along the axial direction of the first axis 101. The first-stage internal gear ring 263 further includes a convex block, and the convex block can be placed into the mounting groove 253 to limit the first-stage internal gear ring 263. At this time, the first-stage internal gear ring 263 is non-rotatable relative to the first gearbox 251.

[0049] Optionally, the positioning member 280 is a positioning pin 281, and the positioning pin 281 extends along the axial direction of the first axis 101. The positioning pin 281 is arranged in the mounting groove 253 formed by the first gearbox 251 itself, and the transmission assembly 200 further includes a gasket. One end of the positioning pin 281 abuts against the gasket, and the other end of the positioning pin 281 abuts against the first-stage internal gear ring 263. The first-stage internal gear ring 263 is clamped by the positioning pin 281 and the first gearbox 251. The positioning pin 281 abuts against the convex block 265. The positioning pin 281 extends along the axial direction of the first axis 101, and the diameter dimension of the first gearbox 251 in the radial direction of the first axis 101 can be not increased, so that the diameter of the gearbox 250 at the first-stage internal gear ring 263 is less than or equal to 46 mm and greater than or equal to 40 mm. At the same time, because the structure of the first gearbox 251 is simplified, the dimension of the gearbox 250 in the axial direction of the first axis 101 is greater than or equal to 43 mm and less than or equal to 55 mm.

[0050] In one embodiment, referring to Figure 8 and Figure 9 , the positioning member is a positioning pin 281a, the positioning pin 281a extends along the radial direction of the first axis, the first gearbox 251a forms a mounting groove 253a, the positioning pin 281a is placed in the mounting groove 253a, and the first gearbox 251a cooperates to position the first-stage internal gear ring 263a. The first-stage internal gear ring 263a forms a flat position 264a, and the positioning pin 281a is located between the mounting groove 253a and the flat position 264a. The positioning pin 281a contacts the flat position 264a of the first-stage internal gear ring 263a. The first-stage internal gear ring 263a further includes a convex block, and the convex block can be placed into the mounting groove 253a to limit the first-stage internal gear ring 263a. The positioning pin 281a abuts against the convex block at the same time.

[0051] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A torque output tool, comprising: case; A motor, disposed in the housing; Output shaft, which can connect and drive the working accessories to rotate; Transmission components, including: A driving wheel, capable of being driven by the motor to drive the output shaft to rotate around a first axis; a shaft locking ring, disposed around the output shaft; a plurality of locking posts disposed within the shaft locking ring and disposed around the output shaft; Characterized in that, the torque output tool also includes: A separator is arranged between the driving wheel and the shaft locking ring, and is used to separate the locking column and the driving wheel; wherein the separator is arranged on a third surface having a shift block that is attached to the driving wheel, and the other side of the separator relative to the third surface abuts against the locking column.

2. The torque output tool according to claim 1, characterized in that: A plurality of shifting blocks are provided on one side of the driving wheel close to the locking column, and the shifting blocks are located between the shaft locking ring and the output shaft.

3. The torque output tool according to claim 2, characterized in that: The separator includes a main body and an extension part. The main body is an annular gasket with a through hole in the middle. The extension part extends toward the through hole. The number of the extension parts is consistent with the number of the locking columns, and the extension part can contact the locking columns.

4. The torque output tool according to claim 3, characterized in that: An opening is formed between adjacent extension portions, and the shift block is inserted into the opening.

5. The torque output tool according to claim 2, characterized in that: The locking column has at least a locking position and an unlocking position relative to the shaft locking ring, wherein when the locking column is located at the locking position, the locking column locks the rotation of the output shaft relative to the housing, and when the locking column is located at the unlocking position, the locking column releases the rotation of the output shaft; the shift block is used to shift to switch the locking column between the locking position and the unlocking position.

6. The torque output tool according to claim 1, characterized in that: The separator is a gasket with a flat end surface.

7. The torque output tool according to claim 1, characterized in that: The torque output tool further comprises a gearbox, the gearbox comprising a first gearbox and a second gearbox, the driving wheel and the shaft locking ring being located in the second gearbox; The transmission assembly also includes: The first planetary gear set comprises: a first planetary gear, a first planetary gear carrier and a first-stage inner gear ring, wherein the first planetary gear is driven by the motor, the first planetary gear carrier is used to mount the first planetary gear, and the first-stage inner gear ring is meshed with the first planetary gear; A second planetary gear set, the second planetary gear set comprising: a second planetary wheel and a second planetary wheel carrier, wherein the second planetary wheel carrier is used for mounting the second planetary wheel; The first gear box is disposed at one end of the motor and supports the motor.

8. The torque output tool according to claim 7, characterized in that: The transmission assembly further includes a positioning member supported by the first gear box and configured to position the first-stage inner gear ring in the direction of the first axis.

9. The torque output tool according to claim 7, wherein: The size of the gearbox in the direction of the first axis is greater than or equal to 43 mm and less than or equal to 55 mm.

10. The torque output tool according to claim 7, wherein: The second planetary gear set further includes a second-stage internal gear ring, the transmission assembly further includes a third planetary gear set, the third planetary gear set includes a third planetary gear, the driving wheel and a third-stage internal gear ring, the driving wheel is used to mount the third planetary gear, the third-stage internal gear ring meshes with the third planetary gear, and the driving wheel meshes with the output shaft.

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