A power ratchet tool

Abstract

The application provides an electric ratchet tool, which comprises a driving assembly, a ratchet assembly, a working assembly, a reversing assembly, a shell and the like, the reversing assembly is provided with a first reversing part and a second reversing part, the first reversing part is arranged on the shell, and the first reversing part is used for switching between a first reversing position and a second reversing position; the first reversing part is provided with a first matching part, the second reversing part is provided with a second matching part matched with the first matching part, the first matching part and the second matching part are used for switching the second reversing part between a third reversing position and a fourth reversing position when the first reversing part is switched between the first reversing position and the second reversing position, and the projection positions of the first matching part and / or the second matching part on the axis of the driving output shaft do not coincide when the first reversing part is in the first reversing position and the second reversing position. The structure of the electric ratchet tool in the prior art is simplified, the transmission efficiency is improved, and the ratchet reversing operation is convenient.

Description

Technical Field

[0001] This invention relates to a power tool, and more particularly to a power ratchet tool. Background Technology

[0002] With the increasing demands of human productivity and the development of technology, power tools have gradually replaced traditional hand tools and are widely used in various fields such as construction, decoration, household use, automotive repair, and industry. In daily life, power tools can replace traditional tools such as electric drills and screwdrivers to solve problems large and small in home repairs. In the automotive field, power tools can efficiently complete tasks such as car assembly, tire replacement, and chassis repair.

[0003] Electric tools driven by motors for fastening are widely used not only in household life but also in professional fields such as mechanical assembly and automotive repair. However, existing electric tools for fastening on the market all have certain problems. Traditional electric ratchet wrenches use a motor-driven reciprocating motion structure to further drive a ratchet mechanism. However, this method of driving the ratchet mechanism through reciprocating motion has low transmission efficiency, complex structure, and high cost, which is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an electric ratchet tool that optimizes the structure of existing ratchet tools and improves transmission efficiency.

[0005] This invention provides an electric ratchet tool, comprising: a drive assembly having a drive output shaft; a ratchet assembly connected to the drive output shaft; a working assembly having a power output shaft connected to the ratchet assembly; a reversing assembly for switching the rotational drive direction of the ratchet assembly; and a housing for at least partially accommodating the drive assembly, the ratchet assembly, and the working assembly; characterized in that the reversing assembly has a first reversing member and a second reversing member, the first reversing member being disposed on the housing, and the first reversing member being used to switch between a first reversing position and a second reversing position, thereby driving the second reversing member to a third reversing position. The ratchet assembly is switched between a first reversing position and a fourth reversing position, changing the rotational drive direction. The first reversing member has a first engaging portion, and the second reversing member has a second engaging portion that engages with the first engaging portion. The first and second engaging portions are used to switch the second reversing member between a third reversing position and a fourth reversing position when the first reversing member switches between the first and second reversing positions. When the first reversing member is in the first and second reversing positions, the projection positions of the first engaging portion and / or the second engaging portion on the axis of the drive output shaft do not coincide. This simplifies the structure of existing electric ratchet tools, improves transmission efficiency, and facilitates ratchet reversing operations.

[0006] In some alternative embodiments, the ratchet assembly has a ratchet shaft, ratchet teeth, and ratchet pawl, the ratchet teeth being disposed on the ratchet shaft, and the reversing assembly further having a third reversing member; the second reversing member switches between the third reversing position and the fourth reversing position, driving the third reversing member to put the ratchet teeth and the ratchet pawl into a first engagement state or a second engagement state.

[0007] Furthermore, the second reversing member switches between the third reversing position and the fourth reversing position, thereby driving the third reversing member to rotate around the drive output shaft and switch between the fifth reversing position and the sixth reversing position, so that the ratchet teeth and the ratchet pawl are in a first engagement state or a second engagement state.

[0008] Furthermore, the second commutator is also provided with a third mating part, and the third commutator is provided with a fourth mating part that mates with the third mating part. The third mating part and the fourth mating part are used to cause the third commutator to rotate around the drive output shaft when the second commutator switches between the third commutation position and the fourth commutation position.

[0009] Furthermore, the third mating part is a protrusion provided at one end of the second commutator, and the fourth mating part is an inclined groove provided on the circumferential surface of the third commutator; and / or the third mating part is an inclined groove provided on the circumferential surface of the second commutator, and the fourth mating part is a protrusion provided at one end of the third commutator.

[0010] In some alternative embodiments, the ratchet assembly further includes a ratchet sleeve, the third reversing member is provided with a plurality of reversing protrusions, the ratchet teeth are polygonal portions disposed at one end of the ratchet shaft, the ratchet pawls are a plurality of cylinders, the plurality of reversing protrusions and the plurality of cylinders are disposed between the ratchet teeth and the ratchet sleeve, and the plurality of reversing protrusions and the plurality of cylinders are spaced apart. When the third reversing member is in the fifth reversing position, the reversing protrusions are close to one end of the ratchet teeth, and when the third reversing member is in the sixth reversing position, the reversing protrusions are close to the other end of the ratchet teeth.

[0011] In some alternative embodiments, the ratchet assembly further includes a ratchet sleeve, the third reversing member is provided with a reversing protrusion, one end of the ratchet shaft is provided with ratchet teeth, the ratchet pawl is connected to the ratchet sleeve and is movable relative to the ratchet sleeve, and the reversing protrusion is used to make the ratchet pawl and the ratchet teeth be in the first engagement state or the second engagement state when the third reversing member is in the fifth reversing position or the sixth reversing position.

[0012] Furthermore, the ratchet assembly further includes a first elastic element and a second elastic element, and the ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion. The first ratchet pawl portion is connected to the ratchet sleeve through the first elastic element, and the second ratchet pawl portion is connected to the ratchet sleeve through the second elastic element. The first engagement state is that the first ratchet pawl portion engages with the ratchet teeth, so that the ratchet assembly is in a first rotational driving direction; the second engagement state is that the second ratchet pawl portion engages with the ratchet teeth, so that the ratchet assembly is in a second rotational driving direction.

[0013] In some optional embodiments, the ratchet assembly further includes a ratchet sleeve, the third reversing member is provided with a reversing protrusion, the ratchet sleeve is provided with ratchet teeth, and the ratchet pawl is connected to the ratchet sleeve and movable relative to the ratchet sleeve. The reversing protrusion is used to place the ratchet pawl and the ratchet teeth in the first engagement state or the second engagement state when the third reversing member is in the fifth reversing position or the sixth reversing position. The ratchet assembly further includes a pin, the ratchet pawl is connected to the ratchet shaft through the pin and is rotatable relative to the ratchet shaft, one end of the ratchet pawl is provided with a first ratchet pawl portion, and the other end is provided with a second ratchet pawl portion. The first engagement state is that the first ratchet pawl portion engages with the ratchet teeth, thereby placing the ratchet assembly in a first rotational driving direction; the second engagement state is that the second ratchet pawl portion engages with the ratchet teeth, thereby placing the ratchet assembly in a second rotational driving direction.

[0014] In other alternative embodiments, the ratchet assembly has a ratchet shaft, ratchet teeth, and ratchet pawl, the ratchet teeth being disposed on the ratchet shaft; the second reversing member switches between the third reversing position and the fourth reversing position, so that the ratchet teeth and the ratchet pawl are in a first engagement state or a second engagement state.

[0015] Furthermore, the ratchet assembly also has a ratchet sleeve, and the ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion. The first ratchet pawl portion and the second ratchet pawl portion are connected to the ratchet sleeve and are movable relative to the ratchet sleeve. The ratchet teeth are disposed on the circumferential surface of the ratchet shaft. In the first engagement state, the first ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a first rotational driving direction. In the second engagement state, the second ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a second rotational driving direction.

[0016] Furthermore, the ratchet assembly also includes a first elastic element and a second elastic element, wherein the first elastic element is disposed between the first ratchet pawl and the ratchet sleeve, and the second elastic element is disposed between the second ratchet pawl and the ratchet sleeve.

[0017] Furthermore, the second commutator has at least one commutation section, which is a deformable element.

[0018] In some optional embodiments, the reversing assembly further includes a reversing switch for simultaneously switching the rotation direction of the drive output shaft when the first reversing member switches between a first reversing position and a second reversing position. In some optional embodiments, the electric ratchet tool is an electric ratchet screwdriver or an electric ratchet drill, and the working assembly includes a working head coaxially disposed with the power output shaft.

[0019] In some alternative embodiments, the electric ratchet tool is an electric ratchet wrench, and the working component includes a working head that is perpendicular to the power output shaft.

[0020] In some alternative embodiments, the drive assembly includes a shaft locking unit and a transmission unit, the shaft locking unit being used to fix the drive output shaft to the housing when the transmission unit stops working.

[0021] In some alternative embodiments, the commutation component is further configured to simultaneously switch the rotation direction of the drive output shaft when the first commutator switches between a first commutation position and a second commutation position.

[0022] In some optional embodiments, the ratchet assembly further includes a ratchet sleeve, and the ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion, the first ratchet pawl portion and the second ratchet pawl portion being movable relative to the ratchet sleeve. The ratchet teeth are disposed on the circumferential surface of the ratchet shaft, wherein the first engagement state is that the first ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a first rotational driving direction, and the second engagement state is that the second ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a second rotational driving direction.

[0023] In some alternative embodiments, the first commutator further includes an operating part, and the first mating part is detachably connected to the operating part shown.

[0024] In some alternative embodiments, the housing is provided with a receiving groove for at least partially accommodating the operating part.

[0025] In some alternative embodiments, the ratchet assembly has a ratchet sleeve, a ratchet shaft, ratchet teeth, and ratchet pawls, the ratchet teeth being disposed on the circumferential surface of the ratchet shaft or the circumferential surface of the ratchet sleeve.

[0026] This invention also provides an electric ratchet tool, comprising: a drive assembly having a drive output shaft; a ratchet assembly connected to the drive output shaft; a working assembly having a power output shaft connected to the ratchet assembly; and a housing for at least accommodating the drive assembly. The electric ratchet tool further comprises a reversing component for switching the rotational drive direction of the ratchet assembly and the rotational direction of the drive output shaft. This solves the problem that the ratchet assembly and drive assembly need to be reversed simultaneously, enabling a single reversing component to switch between the two components simultaneously, thus facilitating user operation.

[0027] In some optional embodiments, the reversing member has a first reversing portion and a second reversing portion, the first reversing portion being used to switch the rotational drive direction of the ratchet assembly, the second reversing portion being used to switch the rotational direction of the drive output shaft, the first reversing portion being used to switch between a first reversing position and a second reversing position, thereby switching the rotational drive direction of the ratchet assembly and the rotational direction of the drive output shaft, the first reversing position and the second reversing position being two different positions set along the drive output shaft.

[0028] In some alternative embodiments, the drive assembly includes a shaft locking unit and a transmission unit, the shaft locking unit being used to fix the drive output shaft to the housing when the transmission unit stops working.

[0029] In some alternative implementations, the first reversing part is an elastic component.

[0030] In some alternative embodiments, the ratchet power tool further includes a reversing switch for switching the rotation direction of the drive output shaft simultaneously when the first reversing part switches between a first reversing position and a second reversing position.

[0031] This invention also provides an electric ratchet tool, comprising: a drive assembly having a drive output shaft; a ratchet assembly connected to the drive output shaft; a working assembly having a power output shaft connected to the ratchet assembly; and a housing for at least accommodating the drive assembly. The electric ratchet tool further comprises a reversing assembly having a first reversing member and a second reversing member. The first reversing member is used to switch the rotational drive direction of the ratchet assembly, and the second reversing member is used to switch the rotational direction of the drive output shaft. The first and second reversing members rotate with the ratchet assembly, and at least one of the first and second reversing members has a first reversing position and a second reversing position along the drive output shaft. This solves the problem that the ratchet assembly and drive assembly need to be reversed simultaneously, realizing the function of switching both components simultaneously with a single reversing assembly, thus facilitating user operation.

[0032] In the above-described embodiment of the electric ratchet tool provided by the present invention, the power output shaft rotates in the same direction in both electric and manual modes. Compared with the traditional ratchet mechanism, this simplifies the structure, reduces manufacturing costs, and also reduces vibration and noise. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0035] The invention will now be further described and explained with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of a traditional ratchet mechanism in the prior art;

[0037] Figure 2 This is an overall exploded view of Embodiment 1 of the present invention;

[0038] Figure 3 This is a partial exploded view of the structure according to Embodiment 1 of the present invention;

[0039] Figure 4 This is a partial structural schematic diagram of Embodiment 1 of the present invention;

[0040] Figure 5 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0041] Figure 6-A yes Figure 5 Schematic diagram of the AA section;

[0042] Figure 6-B yes Figure 5 Schematic diagram of the BB cross section;

[0043] Figure 6-C yes Figure 5 Schematic diagram of the CC section (shaft lock assembly);

[0044] Figure 6-D yes Figure 5 A schematic diagram of one state of the BB cross section;

[0045] Figure 6-E yes Figure 5 Another schematic diagram of the BB section;

[0046] Figure 7 This is an overall exploded view of Embodiment 2 of the present invention;

[0047] Figure 8 This is a partial exploded view of the structure according to Embodiment 2 of the present invention;

[0048] Figure 9 This is a partial structural schematic diagram of Embodiment 2 of the present invention;

[0049] Figure 10 This is an overall schematic diagram of Embodiment 2 of the present invention;

[0050] Figure 11-A yes Figure 10 Schematic diagram of the AA section;

[0051] Figure 11-B yes Figure 10 Schematic diagram of the BB cross section;

[0052] Figure 11-C yes Figure 10 A schematic diagram of one state of the BB cross section;

[0053] Figure 11-D yes Figure 10 Another schematic diagram of the BB section;

[0054] Figure 12 This is an overall exploded view of Embodiment 3 of the present invention;

[0055] Figure 13-A This is a cross-sectional schematic diagram of one state according to Embodiment 3 of the present invention;

[0056] Figure 13-B This is a cross-sectional schematic diagram of another state of Embodiment 3 of the present invention;

[0057] Figure 14 This is an overall schematic diagram of Embodiment 4 of the present invention;

[0058] Figure 15 This is a partial structural schematic diagram of Embodiment 4 of the present invention;

[0059] Figure 16 This is a partial structural side view of Embodiment 4 of the present invention.

[0060] Figure 17 This is a partial explosion diagram of an embodiment of the present invention.

[0061] Figure 18 This is a partial structural side view of an embodiment of the present invention.

[0062] Figure 19 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0063] Figure 20 This is a partial structural schematic diagram of an embodiment of the present invention.

[0064] Figure 21 This is a partial structural side view of an embodiment of the present invention.

[0065] Figure label:

[0066] 10. Electric ratchet tool; 11. Working assembly; 111. Power take-off shaft; 112. Working head; 12. Reversing assembly; 121. First reversing member; 1211. First mating part; 122. Second reversing member; 1221. Second mating part; 1222. Third mating part; 1223. Reversing part; 123. Third reversing member; 1231. Reversing protrusion; 1232. Third mating part; 124. Reversing switch; 13. Ratchet assembly; 131 132, Ratchet Shaft; 133, Ratchet Pad; 1341, Ratchet Sleeve; 1342, First Elastic Element; 1343, Second Elastic Element; 135, Ratchet Tooth; 136, Pin; 14, Drive Assembly; 141, Drive Output Shaft; 142, Transmission Unit; 1421, Gear Set; 1422, Gear Set Housing; 143, Shaft Lock Unit; 144, Motor; 15, Power Module; 151, Battery; 152, Power Switch; 16, Housing; 17, Shaft. Detailed Implementation

[0067] The technical solution of the present invention will be more clearly and completely explained below with reference to the accompanying drawings and through the description of preferred embodiments of the present invention.

[0068] Figure 1 This is a schematic diagram of a ratchet structure commonly found in ratchet tools in the prior art. Figure 1 The ratchet mechanism in the tool uses a traditional reciprocating motion drive, allowing it to perform fastening or disassembly operations in confined spaces. The ratchet mechanism typically uses a reversing fork to switch the rotational drive direction, thus switching the tool between fastening and disassembly operations. For example... Figure 1 The various ratchet structures shown, while differing in their specific methods and structures for switching rotational drive direction, share a fundamentally similar working principle. A single ratchet pawl uses a reversing fork to control one end of the pawl to engage with the ratchet teeth on the ratchet shaft, thus allowing the ratchet structure to rotate only clockwise or counterclockwise, driving the working head under load. A double ratchet pawl, engaging with the ratchet teeth or using an over-clutch mechanism, achieves rotational drive reversal. The ratchet teeth can be located on the outside of the ratchet shaft or the inside of the ratchet sleeve. In the over-clutch method, a roller between the ratchet sleeve and the ratchet shaft functions as the ratchet pawl. These ratchet structures, or other ratchet structures readily apparent to those skilled in the art, all achieve reversal by changing the engagement relationship between the ratchet pawl and the ratchet teeth, effectively addressing the operational requirements of reciprocating fastening in confined spaces. Of course, Figure 1In the prior art shown, whether it is a single ratchet pawl, a double ratchet pawl, or an overrunning clutch, the ratchet teeth are all set on the circumferential surface of the ratchet shaft or ratchet sleeve. Of course, for those skilled in the art, it is also very common for ratchet structures to have ratchet teeth set on the end face perpendicular to the circumferential surface of the ratchet shaft. Since the above ratchet structures are all prior art, they will not be described in detail here.

[0069] Since the above ratchet structures are all driven by reciprocating motion mechanisms, their transmission efficiency is low and their application scenarios are limited.

[0070] like Figures 2-5 According to some embodiments shown, the present invention provides an electric ratchet tool 10, comprising: a drive assembly 14 having a drive output shaft 141; a ratchet assembly 13 connected to the drive output shaft 14; a working assembly 11 having a power output shaft 111 connected to the ratchet assembly 13; a reversing assembly 12 for switching the rotational drive direction of the ratchet assembly 13; and a housing 16 for at least partially accommodating the drive assembly 14, the ratchet assembly 13, and the working assembly 11; the reversing assembly 12 having a first reversing member 121 and a second reversing member 122, the first reversing member 121 being disposed on the housing 16 and used to switch between a first reversing position and a second reversing position, thereby driving the second reversing member. The ratchet assembly 13 is switched between a third reversing position and a fourth reversing position. The first reversing member 121 has a first engaging portion 1211, and the second reversing member 122 has a second engaging portion 1221 that engages with the first engaging portion 1211. The first engaging portion 1211 and the second engaging portion 1221 are used to switch the second reversing member 122 between the third and fourth reversing positions when the first reversing member 121 switches between the first and second reversing positions. When the first reversing member 121 is in the first and second reversing positions, the projection positions of the first engaging portion 1211 and / or the second engaging portion 1221 on the axis 17 of the drive output shaft 141 do not coincide. This simplifies the structure of existing electric ratchet tools, improves transmission efficiency, and facilitates ratchet reversing operations.

[0071] In the above embodiments, the first commutator 121 and the second commutator 122 can be integrally formed components, or they can be components composed of multiple detachably or non-detachably connected elements. This is readily apparent to those skilled in the art and will not be elaborated further. The first commutator 121 and the second commutator 122 can be directly coupled, or they can be indirectly coupled through other components. This is readily apparent to those skilled in the art and will not be elaborated further. When the first commutator 121 moves between the first commutation position and the second commutation position, the travel of the first mating part 1211 and / or the second mating part 1221 has a travel component in the direction of the axis 17 of the drive output shaft 141. That is, in some embodiments, the first commutator 121 can be as follows: Figure 2 The relative housing 16 shown moves back and forth along the direction of axis 17, switching between a first reversing position and a second reversing position; in other embodiments, the first reversing member 121 moves back and forth relative to the housing 16 along a direction intersecting axis 17, switching between a first reversing position and a second reversing position. The first reversing member 121 may be as follows: Figure 3 The structure described can also be other structures, such as a rotary operating member. As long as the first reversing member 121 is operated so that the first mating part 1211 and / or the second mating part 1221 can form a stroke component in the direction of the axis 17 of the drive output shaft, it is easy for those skilled in the art to conceive of, and will not be described in detail here.

[0072] In some optional embodiments, the second reversing member 122 switches between the third reversing position and the fourth reversing position to switch the rotational drive direction of the ratchet assembly 13. This switching can be achieved by the second reversing member 122 directly cooperating with the ratchet assembly 13, or by the second reversing member 122 indirectly cooperating with the ratchet assembly 13 through other components. This is also easy for those skilled in the art to conceive of, and will not be elaborated here.

[0073] In some optional embodiments, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees. The first commutator 121 can be switched by direct forward and backward movement, by rotational movement, by a combination of forward and backward movement and rotational movement, or by other methods readily conceived by those skilled in the art. For ease of operation, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees.

[0074] In some alternative embodiments, the ratchet assembly 13 has a ratchet shaft 131, ratchet teeth 135, and ratchet pawl 132, with the ratchet teeth 135 disposed on the ratchet shaft 131. The reversing assembly 12 also has a third reversing member 123. The second reversing member 122 switches between a third reversing position and a fourth reversing position, driving the third reversing member 123 to put the ratchet teeth 135 and the ratchet pawl 132 into a first engagement state or a second engagement state.

[0075] In some alternative embodiments, the second reversing member 122 switches between a third reversing position and a fourth reversing position, thereby driving the third reversing member 123 to rotate about the drive output shaft 141 and switch between a fifth reversing position and a sixth reversing position, so that the ratchet teeth 135 and the ratchet pawl 132 are in a first engagement state or a second engagement state.

[0076] In some preferred embodiments, such as Figure 4 As shown, the third reversing position and the fourth reversing position are two positions set along the axis 17. That is, the second reversing member 122 moves back and forth along the axis 17 to switch between the third reversing position and the fourth reversing position, thereby realizing the reversing operation of the ratchet assembly 13.

[0077] In some optional embodiments, the second commutator 122 is further provided with a third mating part 1222, and the third commutator 123 is provided with a fourth mating part 1232 that mates with the third mating part 1222. The third mating part 1222 and the fourth mating part 1232 are used to make the third commutator 123 rotate around the drive output shaft when the second commutator 122 switches between the third commutation position and the fourth commutation position.

[0078] In the above embodiments, the third commutator 123 can be a one-piece molded component, or it can be a component composed of multiple elements that are detachably or non-detachably connected. This is readily apparent to those skilled in the art and will not be elaborated further here. The third commutator 123 and the second commutator 122 can be directly coupled, or they can be indirectly coupled through other components. This is readily apparent to those skilled in the art and will not be elaborated further here.

[0079] The electric ratchet tool 10 proposed in this invention uses a battery or mains power grid to supply power to the motor 144 via an operation start switch. The motor 144 drives the transmission unit 142 to work and outputs power to the drive output shaft 141. The drive output shaft 141 is connected to the ratchet assembly 13, which drives the ratchet shaft 131 or ratchet sleeve 133 to rotate. The power is transmitted to the power output shaft 111 through the ratchet assembly 13. The ratchet assembly 13 has high transmission efficiency, and the electric ratchet tool 10 has a simple structure and low cost. The reversing component 12 is used to switch the rotation drive direction of the ratchet assembly 13.

[0080] In some preferred embodiments, the third mating part 1222 is a protrusion provided at one end of the second commutator 122, and the fourth mating part 1232 is an inclined groove provided on the circumferential surface of the third commutator 123; and / or the third mating part 1222 is an inclined groove provided on the circumferential surface of the second commutator 122, and the fourth mating part 1232 is a protrusion provided at one end of the third commutator 123.

[0081] In some preferred embodiments, the first mating portion 1211 on the first reversing member 121 is concave, the second mating portion 1221 on the second reversing member 122 that mates with the first mating portion 1211 is convex, the fourth mating portion 1232 on the third reversing member 123 is concave, and the third mating portion 1222 on the second reversing member 122 that mates with the fourth mating portion 1232 is convex. The first reversing member 121 switches between a first reversing position and a second reversing position. The first mating portion 1211 and the second mating portion 1221 work together to drive the second reversing member 122, and the third mating portion 1222 and the fourth mating portion 1232 work together to drive the third reversing member 123, thereby changing the rotational drive direction of the ratchet structure, that is, changing the rotatable direction of the ratchet tool under load. Figure 3 As shown, in this preferred embodiment, the second mating part 1221 is annular. Since the ratchet assembly 13 moves with the drive assembly 14, the first mating part 1211 is always mated with the second mating part 1221. That is, the position of the first reversing member 121 relative to the housing remains unchanged during the user's operation of the power tool, thus achieving convenient reversing operation. Of course, in other optional embodiments, the first mating part 1211 can be an annular groove (not shown in the figure), or the first reversing member 121 can be provided with a convex part, and the second reversing member 122 can be provided with a concave part that mates with the convex part. As long as the first reversing member 121 and the second reversing member 122 are always mated regardless of the position of the ratchet assembly 13 as it moves with the drive assembly 14, the above substitutions are simple substitutions for those skilled in the art and will not be elaborated here.

[0082] like Figure 2As shown in Figure 6, in some alternative embodiments, the ratchet assembly 13 further includes a ratchet sleeve 133, a plurality of reversing protrusions 1231 are provided on the third reversing member 123, the ratchet teeth 135 are polygonal portions provided at one end of the ratchet shaft 131, the ratchet pawls 132 are a plurality of rollers, the plurality of reversing protrusions 1231 and the plurality of rollers are provided between the ratchet teeth 135 and the ratchet sleeve 133, and the plurality of reversing protrusions 1231 are spaced apart from the plurality of cylinders. When the third reversing member 123 is in the fifth reversing position, the reversing protrusions 1231 are close to one end of the ratchet teeth 135, and when the third reversing member 123 is in the sixth reversing position, the reversing protrusions 1231 are close to the other end of the ratchet teeth, thereby switching the rotational drive direction of the ratchet assembly 13. In this embodiment, the ratchet assembly 13 is a ratchet assembly with an over-clutch mechanism. The ratchet teeth 135 are polygonal portions provided at one end of the ratchet shaft 131, which are also equivalent to being provided on the circumferential surface of the ratchet shaft 131. Of course, it is easy for those skilled in the art to imagine that the polygonal portion at one end of the ratchet shaft can be a straight side or a curved side. As long as it cooperates with multiple reversing protrusions 1231 and multiple rollers, it can realize the switching of rotational drive directions in two different directions. This will not be elaborated here.

[0083] In some preferred embodiments, the engagement states of the plurality of reversing protrusions 1231 with the ratchet teeth 135 are as follows: Figure 6-D and Figure 6-E As shown, when the third commutator 123 is in the fifth commutation position (e.g.) Figure 6-D As described above), multiple reversing protrusions 1231 engage with the polygonal ratchet teeth 135 at the end of the ratchet shaft 131, causing the ratchet assembly 13 to rotate clockwise, meaning the ratchet tool can achieve clockwise rotation under load; when the third reversing member 123 is in the sixth reversing position (e.g. Figure 6-E As shown), multiple reversing protrusions 1231 engage with the polygonal ratchet teeth 135 at the end of the ratchet shaft 131, so that the rotational drive direction of the ratchet assembly 13 is counterclockwise, that is, the ratchet tool can achieve clockwise rotation with load.

[0084] In other alternative implementations, such as Figures 7-10As shown, the ratchet assembly 13 also includes a ratchet sleeve 133, a reversing protrusion 1231 on the third reversing member 1243, a ratchet tooth 135 at one end of the ratchet shaft 131, and a ratchet pawl 132 connected to the ratchet sleeve 133 and movable relative to the ratchet sleeve 1334. The reversing protrusion 1231 is used to place the ratchet pawl 132 and the ratchet tooth 135 in a first engagement state or a second engagement state when the third reversing member 1243 is in a fifth reversing position or a sixth reversing position. In some optional embodiments, the ratchet assembly 13 also includes a first elastic member 1341 and a second elastic member 1342. The ratchet pawl 132 includes a first ratchet pawl portion 1321 and a second ratchet pawl portion 1322. The first ratchet pawl portion 1321 is connected to the ratchet sleeve 133 through the first elastic member 1341, and the second ratchet pawl portion 1322 is connected to the ratchet sleeve 133 through the second elastic member 1342. The first engagement state (e.g., Figure 11-C As shown, the first ratchet pawl 1321 engages with the ratchet teeth 135 on the outer circumferential surface of one end of the ratchet shaft 131, causing the ratchet assembly 13 to be in a clockwise rotational driving direction; the second engagement state (as shown) Figure 11-D As shown, the second ratchet pawl 1322 engages with the ratchet tooth 135 disposed on the outer circumferential surface of one end of the ratchet shaft 131, causing the ratchet assembly 13 to be in a counterclockwise rotational driving direction. It is readily apparent to those skilled in the art that the connection in the above embodiments can be a fixed connection, a mating connection, a direct connection, or an indirect connection; further details are omitted here. In other optional embodiments, such as... Figure 1 The existing ratchet structure shown can be composed of multiple ratchet pawls. By operating different ratchet pawls to mesh with ratchet teeth, the direction of rotation can be switched. Alternatively, a single ratchet pawl can cooperate with different parts of the ratchet teeth to switch the direction of rotation. Or it can be a ratchet structure that is easy for those skilled in the art to imagine, which will not be elaborated here.

[0085] In some alternative implementations, such as Figure 12 As shown, the ratchet assembly 13 also includes a ratchet sleeve 133, a reversing protrusion 1231 on the third reversing member 1243, ratchet teeth 135 on the ratchet shaft 133, and a ratchet pawl 132 connected to the ratchet sleeve 133 and movable relative to the ratchet sleeve 1334. The reversing protrusion 1231 is used to put the ratchet pawl 132 and the ratchet teeth 135 into a first engagement state or a second engagement state when the third reversing member 1243 is in the fifth reversing position or the sixth reversing position. The ratchet assembly 13 also includes a pin 136, and the ratchet pawl 133 is connected to the ratchet shaft 131 via the pin 136 and is rotatable relative to the ratchet shaft 131. One end of the ratchet pawl 132 is provided with a first ratchet pawl portion 1321, and the other end is provided with a second ratchet pawl portion 1322. In the first engagement state (e.g. Figure 13-AAs shown, the first ratchet pawl 1321 engages with the ratchet teeth 135 located inside the ratchet sleeve 133, thereby placing the ratchet assembly 13 in a clockwise rotational driving direction; the second engagement state (as shown) Figure 13-B As shown, the second ratchet pawl 1322 engages with the ratchet teeth 135 located inside the ratchet sleeve 133, thereby placing the ratchet assembly 13 in a counter-clockwise rotational driving direction. In other optional embodiments, such as Figure 1 The existing ratchet structure shown can be composed of multiple ratchet pawls. By operating different ratchet pawls to mesh with ratchet teeth, the direction of rotation can be switched. Alternatively, a single ratchet pawl can cooperate with different parts of the ratchet teeth to switch the direction of rotation. Or it can be a ratchet structure that is easy for those skilled in the art to imagine, which will not be elaborated here.

[0086] Of course, in the above embodiments, the structure of the ratchet assembly 13 can be implemented in various ways with reference to the prior art. The ratchet teeth can be set on the inner or outer side of the ratchet sleeve to engage with the ratchet pawl, or they can be set at any position on the ratchet shaft. The end face perpendicular to the circumferential surface or axial surface engages with the ratchet pawl. The corresponding engaging ratchet pawl can be a single ratchet pawl with two engaging ratchet pawl parts, or it can be multiple split ratchet pawl parts. The engagement relationship with the ratchet teeth is adjusted by the reversing protrusion. These optional embodiments are simple substitutions for those skilled in the art, and will not be elaborated here. The ratchet pawl can be composed of multiple ratchet pawl parts. By operating, different ratchet pawl parts can engage with the ratchet teeth to achieve the reversal of the drive rotation direction. Alternatively, a single ratchet pawl part can engage with different parts of the ratchet teeth to achieve the reversal of the drive rotation direction, or it can be a ratchet structure that is easy for those skilled in the art to conceive of, which will not be elaborated here.

[0087] In the above embodiments, the third mating part 1222 or the fourth mating part 1232 is preferably configured as an inclined groove. The switching of the first reversing member 1211 between the first reversing position and the second reversing position along the extension direction of the axis 17 drives the third reversing member 123 to rotate around the axis 17, thereby realizing the switching of the reversing protrusion 1231 between the fifth working position and the sixth working position, thereby switching the rotational drive direction of the ratchet assembly 13, improving transmission efficiency while simplifying the structure and reducing manufacturing cost.

[0088] In some other alternative implementations, such as Figures 14-16 As shown, the ratchet assembly 13 has a ratchet shaft 131, ratchet teeth 135 and ratchet pawl 132, with ratchet teeth 135 disposed on the ratchet shaft 131; the second reversing member 122 switches between a third reversing position and a fourth reversing position, so that the ratchet teeth 135 and the ratchet pawl 132 are in a first engagement state or a second engagement state.

[0089] In some preferred embodiments, the third reversing position and the fourth reversing position are two positions set along the axis 17, that is, the second reversing member 122 moves back and forth along the axis 17 to switch between the third reversing position and the fourth reversing position, thereby realizing the reversing operation of the ratchet assembly 13.

[0090] In some alternative embodiments, the ratchet assembly 13 further includes a ratchet sleeve 133, and a ratchet pawl 132 including a first ratchet pawl portion 1321 and a second ratchet pawl portion 1322. The first ratchet pawl portion 1321 and the second ratchet pawl portion 1322 are connected to the ratchet sleeve 133 and are movable relative to the ratchet sleeve 133. The ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131. In the first engagement state, the first ratchet pawl portion 1321 engages with the ratchet teeth 135, causing the ratchet assembly 13 to rotate clockwise or counterclockwise. In the second engagement state, the second ratchet pawl portion 1322 engages with the ratchet teeth 135, causing the ratchet assembly to rotate counterclockwise or clockwise.

[0091] In some optional embodiments, the ratchet assembly 13 further includes a first elastic element 1341 and a second elastic element 1342. The first elastic element 1341 is disposed between the first ratchet pawl portion 1321 and the ratchet sleeve 133, and the second elastic element 13412 is disposed between the second ratchet pawl portion 1322 and the ratchet sleeve 133. Preferably, a limiting portion for placing the first elastic element 1341 and the second elastic element 1342 is provided on the inner side of the ratchet sleeve 133. The structure of the limiting portion is not limited and is readily apparent to those skilled in the art, and will not be elaborated here. As readily apparent to those skilled in the art, the connection in the above embodiments can be a fixed connection, abutting connection, a direct connection, or an indirect connection, and will not be elaborated here. In some preferred embodiments, the second reversing member 122 has at least one reversing portion 1223, which is a deformable element. In some preferred embodiments, the reversing portion 1223 can be a metal spring or other similar elastic element.

[0092] In the above-described optional embodiments, the commutation portion 1223 disposed on the second commutator 122 may be integrally formed with the second commutator 122, or it may be a component assembled on the second commutator 122. In other optional embodiments, the second commutator 122 and the commutation portion 1223 may be made of the same material or different materials. In some other preferred embodiments, such as... Figure 16As shown, the ratchet tooth 135 is disposed on the outer peripheral surface of the protrusion at one end of the ratchet shaft 131. The reversing part 1223 is concave to avoid positional interference between the reversing part 1223 and the ratchet shaft 131 when the second reversing member 122 switches positions. The reversing part 1223 can be a single concave component or multiple components disposed on the second reversing member 132 to form a concave shape, which is readily apparent to those skilled in the art and will not be elaborated further here. It is also readily apparent to those skilled in the art that the ratchet tooth 135 in the above embodiment can be disposed at any position on the peripheral surface of the ratchet shaft, which will not be elaborated further here.

[0093] The electric ratchet tool 10 proposed in this invention uses a battery or mains power supply to a motor 144 via a start switch. The motor 144 drives a transmission unit 142 and outputs power to a drive output shaft 141. The drive output shaft 141 is connected to a ratchet assembly 13, which rotates the ratchet shaft 131 or ratchet sleeve 133. The power is then transmitted to a power output shaft 111 via the ratchet assembly 13. The ratchet assembly 13 has high transmission efficiency, and the electric ratchet tool 10 has a simple structure and low cost. A reversing component 12 is used to switch the rotational drive direction of the ratchet assembly 13. Simultaneously, the reversing component 12 also switches the rotational direction of the drive output shaft 141 when switching between a first and second reversing position. This further solves the problem of simultaneous reversing of the ratchet assembly and the drive assembly, enabling a single reversing component to switch both components simultaneously, thus facilitating user operation. In some optional embodiments, the reversing assembly 12 also includes a reversing switch 124, which is used to simultaneously switch the rotation direction of the drive output shaft 141 when the first reversing member 121 switches between a first reversing position and a second reversing position. This further solves the problem that the ratchet assembly and the drive assembly need to be reversed simultaneously, realizing the function of switching two components at the same time with one reversing assembly, which is convenient for user operation.

[0094] In some optional embodiments, the reversing assembly 12 also has a reversing switch 124. The reversing switch 124 can be a switch element, that is, the reversing assembly 12 switches the rotation direction of the drive output shaft 141. When the first reversing element 121 is in the first reversing position and the second reversing position respectively, the reversing switch 124 is directly in different switching states, such as the on state or the off state. So that when the ratchet tool is started in electric working mode, the switching state signal of the reversing switch 124 can be identified, and the motor of the drive assembly 14 can be controlled to rotate forward or backward based on the switching state signal, thus realizing the switching of the rotation direction of the drive output shaft 141. The reversing switch 124 can also be composed of multiple switching elements. The first reversing element 121 has an operating part 1212, which is the reversing component 12 that switches the rotation direction of the drive output shaft 141. When the first reversing element 121 is in the first reversing position and the second reversing position, the operating part 1212 corresponds to different switching elements. Thus, when the ratchet tool is started in electric working mode, the operating part 1212 is operated to start the electric mode operation. It can identify the switching status signals of different switching elements in the reversing switch 124 and control the motor of the drive component 14 to rotate forward or backward based on the switching status signals of different switching elements. This realizes the switching of the rotation direction of the drive output shaft 141, further combining the motor start operation and simplifying the operation structure.

[0095] In some optional embodiments, the drive assembly 14 also includes a shaft locking unit 143 and a transmission unit 142. The shaft locking unit 143 is used to fix the drive output shaft 141 to the transmission unit 142 when the transmission unit 142 stops working. In real-world applications, users sometimes need to perform a rotational operation in electric mode before performing a manual operation, especially in confined spaces. Adding a ratchet function can provide a better user experience. Therefore, when the electric ratchet tool stops, the shaft locking unit 143 is needed to fix the drive output shaft 141 to the transmission unit 142 to achieve the function of a manual ratchet. Figure 6-C The diagram illustrates one implementation of a shaft lock assembly. However, other implementations of the shaft lock assembly are readily apparent to those skilled in the art and will not be elaborated upon here.

[0096] In some alternative embodiments, the drive assembly 14 has a transmission unit 142 and a shaft locking unit 143. When the user performs manual operation, the transmission unit 142 stops working, and the shaft locking unit 143 is used to fix the drive output shaft 14 and the housing 16, thereby ensuring that the ratchet tool works normally in manual mode.

[0097] In some alternative embodiments, the transmission unit 142 has a gear set 1421 and a gear set housing 1422. When the user performs manual operation, the transmission unit 142 stops working, that is, the gear set 1421 stops working. The shaft locking unit 143 is used to fix the drive output shaft 141 and the gear set housing 1422. Since the gear set housing 1422 is relatively fixed to the housing 16, the shaft locking unit 143 is used to fix the drive output shaft 141 and the housing 16, thereby ensuring that the ratchet tool works normally in manual mode. Of course, the shaft locking unit 143 can also be directly set between the housing 16 and the drive output shaft 141, or set between other components fixedly assembled with the housing 16 and the drive output shaft 141, thereby realizing the fixation of the drive output shaft 141 and the housing 16 by the shaft locking unit 143. This is easy for those skilled in the art to conceive of, and will not be described in detail here.

[0098] In some alternative implementations, the electric ratchet tool 10 is an electric ratchet screwdriver or an electric ratchet drill, with the working assembly...

[0099] 11 Working head 113 (not shown in the figure), the working head 113 is coaxially arranged with the power output shaft 111.

[0100] In some alternative embodiments, the electric ratchet tool 10 is an electric ratchet wrench, and the working assembly 11 includes a working head 113, which is perpendicular to the power output shaft 111.

[0101] In some other alternative embodiments, the above-described working component can also be configured to have a rotatable working head, which is a simple substitution for those skilled in the art and will not be described in detail here.

[0102] In some preferred embodiments, the ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131 or the circumferential surface of the ratchet sleeve 133. Those skilled in the art will readily conceive of the following: the circumferential surface of the ratchet shaft 131; the circumferential surface of any protrusion on the circumferential surface of the ratchet shaft 131; the inner circumferential surface of the ratchet sleeve 133; the outer circumferential surface of the ratchet sleeve 133; or a ratchet assembly in the form of an over-clutch mechanism. Further details are omitted here.

[0103] Based on all the above embodiments, the drive output shaft of the drive assembly can be connected to the ratchet sleeve of the ratchet assembly, or it can be connected to the ratchet shaft of the ratchet assembly. Correspondingly, the ratchet shaft of the ratchet assembly is connected to the power output shaft of the working assembly, or the ratchet sleeve of the ratchet assembly is connected to the power output shaft of the working assembly. This is a simple substitution that will be easily understood by those skilled in the art, and will not be elaborated upon here. The connection between the drive output shaft and the ratchet assembly can be direct or indirect through other components, which is readily apparent to those skilled in the art and will not be elaborated upon here.

[0104] Based on all the above embodiments, one end of the power output shaft 111 is connected to the ratchet assembly 13 and the other end is connected to the working head 113, so that when working in electric mode, the drive output shaft 141 drives the ratchet assembly 13 to rotate, and the ratchet assembly 13 drives the power output shaft to rotate, thereby driving the working head 113 to work.

[0105] Based on all the above embodiments, the housing 16 can be a single component or composed of multiple components. It can be a complete component, multiple separate components, or multiple partially connected components. This is readily apparent to those skilled in the art and will not be elaborated upon here.

[0106] Based on all the above embodiments, the first commutator 121 is disposed on the housing 16. It can be disposed inside the housing 16, outside the housing 16, or partially disposed inside or outside the housing 16. The first commutator 121 can be directly assembled on the housing 16, or indirectly assembled on the housing 16 through cooperation with other components. This is easy for those skilled in the art to conceive of, and will not be elaborated here.

[0107] Based on all the above embodiments, the housing 16, used to at least partially accommodate the drive assembly 14, the ratchet assembly 13, and the working assembly 11, can be used only to accommodate the drive assembly 14, or it can be used to accommodate the drive assembly 14 and the ratchet assembly 13, or it can be used to accommodate the drive assembly 14, the ratchet assembly 13, and the working assembly 11. The drive assembly 14, the ratchet assembly 13, or the working assembly 11 can be entirely disposed inside the housing, or it can be partially disposed inside the housing and partially disposed outside the housing. This is readily apparent to those skilled in the art and will not be elaborated upon here. Figures 17-18 As shown, the ratchet assembly 13 has a ratchet shaft 131, ratchet teeth 135 and ratchet pawl 132, with ratchet teeth 135 disposed on the ratchet shaft 131; the second reversing member 122 switches between a third reversing position and a fourth reversing position, so that the ratchet teeth 135 and the ratchet pawl 132 are in a first engagement state or a second engagement state.

[0108] In some preferred embodiments, the third reversing position and the fourth reversing position are two positions set along the axis 17, that is, the second reversing member 122 moves back and forth along the axis 17 to switch between the third reversing position and the fourth reversing position, thereby realizing the reversing operation of the ratchet assembly 13.

[0109] In some embodiments, the first reversing member 121 has a first mating portion 1211, and the second reversing member 122 has a second mating portion 1221. When the user operates the first reversing member 121, the first mating portion 1211 and the second mating portion 1221 drive the second reversing member 122, thereby switching the rotational drive direction of the ratchet assembly 13. The first mating portion 1211 may be annular, and the second mating portion 1221 may be a recess that can mate with the annular shape; the second mating portion 1221 may be annular, and the first mating portion 1211 may be a recess that can mate with the annular shape; or other similar structures may exist, which are readily apparent to those skilled in the art and will not be elaborated upon here.

[0110] In some embodiments, the ratchet assembly 13 further includes a ratchet sleeve 133, and the ratchet pawl 132 includes a first ratchet pawl portion 1321 and a second ratchet pawl portion 1322. The first ratchet pawl portion 1321 and the second ratchet pawl portion 1322 are movable relative to the ratchet sleeve 133. The ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131. In the first engagement state, the first ratchet pawl portion 1321 engages with the ratchet teeth 135, causing the ratchet assembly 13 to rotate in a first direction. In the second engagement state, the second ratchet pawl portion 1322 engages with the ratchet teeth 135, causing the ratchet assembly 13 to rotate in a second direction, thus achieving the switching of the rotational drive direction of the ratchet assembly. In some optional embodiments, the first ratchet pawl portion 1321 and the second ratchet pawl portion 1322 can be an integral structure or two separate components, which is readily apparent to those skilled in the art and will not be elaborated upon here. For those skilled in the art, it is easy to imagine that the surface of the ratchet shaft 131 could be on the circumferential surface of the ratchet shaft 131, or on the circumferential surface of the protrusion at any position on the circumferential surface of the ratchet shaft 131, or on the inner circumferential surface of the ratchet sleeve 133, or on the outer circumferential surface of the ratchet sleeve 133, which will not be elaborated here.

[0111] In some optional embodiments, the first commutator 121 further includes an operating part 1212, and the first mating part 1211 is detachably connected to the operating part 1212. That is, the first commutator 121 is composed of the operating part 1212 and the first mating part 1211. The detachable connection between the operating part 1212 and the first mating part 1211 facilitates assembly. Here, the connection means that the operating part 1212 can drive the first mating part 1211 to move. This connection can be a direct contact connection or an indirect contact connection through other components. This is readily apparent to those skilled in the art and will not be elaborated upon here.

[0112] In some optional embodiments, the housing 16 is provided with a receiving groove 161 for at least partially accommodating the operating part 1212. Preferably, an elastic element 1213 is provided between the operating part 1212 and the receiving groove 161. The elastic element 1213 can be disposed on the operating part 1212 and be an integral structure with the operating part 1212, or it can be a separate component, such as a spring or a sheet spring, and can be made of metal or non-metal materials, which is readily apparent to those skilled in the art and will not be elaborated here. The housing 16 can be a single component or composed of multiple components; it can be a single completed component, multiple separate components, or multiple partially connected components, which is readily apparent to those skilled in the art and will not be elaborated here.

[0113] like Figure 18 As shown, in some optional embodiments, the reversing switch 124 has a first switching element 1241 and a second switching element 1242. The first reversing element 121 moves back and forth along the axis 17. That is, when the user moves the operating part 1212 back and forth, it can drive the first mating part 1211. The first mating part 1211 drives the second reversing element 122 to move, thereby switching the rotational drive direction of the ratchet assembly 13. At the same time, when the operating part moves forward, the corresponding switching element 1241 is activated. At this time, pressing the operating part 1212 activates the electric mode of the ratchet power tool. The switching element 1241 is in the on state, and the switching element 1242 is in the off state. The control unit (not shown in the figure) can identify the on and off states of the switching elements 1241 and 1242, thereby controlling the rotational direction of the motor to be consistent with the rotational drive direction of the ratchet assembly, ensuring that the ratchet assembly works normally in electric and manual modes, and the switching operation is convenient. In other alternative embodiments, the switching switch 124 may be a single switching element or multiple switching elements. Switch 1241 and switch 1242 may be signal switches or high-current switches, which are readily apparent to those skilled in the art and will not be elaborated here.

[0114] In some alternative embodiments, the ratchet assembly 13 includes a ratchet sleeve 133, a ratchet shaft 131, ratchet teeth 135, and ratchet pawls 132. The ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131 or the circumferential surface of the ratchet sleeve 133. For those skilled in the art, it is readily apparent that the ratchet teeth 135 can be disposed on the circumferential surface of the ratchet shaft 131, on the circumferential surface of any protrusion at any position on the circumferential surface of the ratchet shaft 131, on the inner circumferential surface of the ratchet sleeve 133, on the outer circumferential surface of the ratchet sleeve 133, or as a ratchet assembly in the form of an over-clutch mechanism; further details are omitted here.

[0115] This invention provides an electric ratchet tool 10, comprising: a drive assembly 14 having a drive output shaft 141; a ratchet assembly 13 connected to the drive output shaft 14; a working assembly 11 having a power output shaft 111 connected to the ratchet assembly 13; a reversing assembly 12 for switching the rotational drive direction of the ratchet assembly 13; and a housing 16 for at least partially housing the drive assembly 14, the ratchet assembly 13, and the working assembly 11. The reversing assembly 12 has a first reversing element 121 and a second reversing element 122. The first reversing element 121 is disposed on the housing 16 and is used to switch between a first reversing position and a second reversing position, thereby driving the second reversing element 122 to switch between a third reversing position and a fourth reversing position, thus switching the rotational drive direction of the ratchet assembly 13. The first reversing member 121 is provided with a first mating part 1211, and the second reversing member 122 is provided with a second mating part 1221 that mates with the first mating part 1211. The first mating part 1211 and the second mating part 1221 are used to switch the second reversing member 122 between a third reversing position and a fourth reversing position when the first reversing member 121 switches between a first reversing position and a second reversing position. When the first reversing member 121 is in the first reversing position and the second reversing position, the projection positions of the first mating part 1211 and / or the second mating part 1221 on the axis 17 of the drive output shaft 141 do not coincide. The ratchet assembly 13 has a ratchet sleeve 133, a ratchet shaft 131, ratchet teeth 135, and ratchet pawls 132. The ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131 or the circumferential surface of the ratchet sleeve 133. The electric ratchet tool provided by the present invention has high transmission efficiency and low manufacturing cost. Preferably, the reversing component 12 is also used to simultaneously switch the rotation direction of the drive output shaft 141 when switching between the first reversing position and the second reversing position. This further solves the problem that the ratchet component and the drive component need to be reversed simultaneously, realizing the function of one reversing component switching two components at the same time, which is convenient for user operation.

[0116] In some optional embodiments, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees. The first commutator 121 can be switched by direct forward and backward movement, by rotational movement, by a combination of forward and backward movement and rotational movement, or by other methods readily conceived by those skilled in the art. For ease of operation, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees.

[0117] This invention proposes an electric ratchet tool 10, comprising: a drive assembly 14 having a drive output shaft 141; a ratchet assembly 13 connected to the drive output shaft 141; a working assembly 11 having a power output shaft 111 connected to the ratchet assembly 13; and a housing 16 for at least partially accommodating the drive assembly 14. The electric ratchet tool 10 further comprises a reversing component 12 for switching the rotational drive direction of the ratchet assembly 13 and the rotational direction of the drive output shaft 141. This solves the problem that the ratchet assembly and drive assembly need to be reversed simultaneously, enabling a single reversing component to switch between the two components simultaneously, thus facilitating user operation.

[0118] In some optional embodiments, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees. The first commutator 121 can be switched by direct forward and backward movement, by rotational movement, by a combination of forward and backward movement and rotational movement, or by other methods readily conceived by those skilled in the art. For ease of operation, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees.

[0119] like Figures 19-21 As shown, in some embodiments, the reversing member 12 has a first reversing portion 121 and a second reversing portion 122. The first reversing portion 121 is used to switch the rotational drive direction of the ratchet assembly 13, and the second reversing portion 122 is used to switch the rotational direction of the drive output shaft 141. The first reversing portion 121 switches between a first reversing position and a second reversing position, thereby switching the rotational drive direction of the ratchet assembly 13 and the rotational direction of the drive output shaft. The first reversing position and the second reversing position are two different positions set along the drive output shaft 141. Specifically, as long as the projections of the first reversing portion 121 in the first reversing position and the first reversing portion 121 in the second reversing position do not coincide on the axis of the drive output shaft 141, the first reversing position and the second reversing position are two different positions set along the drive output shaft 141.

[0120] The ratchet assembly 13 has a ratchet shaft 131, ratchet teeth 135 and ratchet pawl 132. The first reversing part 121 is used to switch between a first reversing position and a second reversing position. The ratchet teeth 135 and ratchet pawl 132 are in a first engagement state or a second engagement state through the first reversing part 121.

[0121] In some optional embodiments, the first reversing part 121 is an elastic member, and the ratchet pawl 132 has a first ratchet pawl portion 1321 and a second ratchet pawl portion 1322. When the first reversing part 121 is in the first reversing position, the first ratchet pawl portion 1321 engages with the ratchet tooth 135; when the first reversing part 121 is in the second reversing position, the second ratchet pawl portion 1322 engages with the ratchet tooth 135, thereby realizing the switching of the rotational drive direction of the ratchet assembly 13. In some preferred embodiments, at least one of the first reversing part 121 and the second reversing part 122 is a ring portion.

[0122] In some alternative embodiments, the ratchet power tool 10 also includes a reversing switch 124, which is used to switch the rotation direction of the drive output shaft 141 simultaneously when the first reversing part 121 switches between a first reversing position and a second reversing position. For example... Figure 21 As shown, while the first reversing part 121 moves back and forth along the axis 17, it switches the state of the reversing switch 124 located on the housing 16. When the electric ratchet tool is started in electric working mode, it controls the rotation direction of the motor by recognizing the state of the reversing switch 124, which realizes the switching of the rotation direction of the drive output shaft 141.

[0123] In some alternative embodiments, the transmission unit 142 has a gear set 1421 and a gear set housing 1422. When the user performs manual operation, the transmission unit 142 stops working, that is, the gear set 1421 stops working. The shaft locking unit 143 is used to fix the drive output shaft 141 and the gear set housing 1422. Since the gear set housing 1422 is relatively fixed to the housing 16, the shaft locking unit 143 is used to fix the drive output shaft 141 and the housing 16, thereby ensuring that the ratchet tool works normally in manual mode. Of course, the shaft locking unit 143 can also be directly set between the housing 16 and the drive output shaft 141, or set between other components fixedly assembled with the housing 16 and the drive output shaft 141, thereby realizing the fixation of the drive output shaft 141 and the housing 16 by the shaft locking unit 143. This is easy for those skilled in the art to conceive of, and will not be described in detail here.

[0124] In some alternative embodiments, the ratchet assembly 13 includes a ratchet sleeve 133, a ratchet shaft 131, ratchet teeth 135, and ratchet pawls 132. The ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131 or the circumferential surface of the ratchet sleeve 133. For those skilled in the art, it is readily apparent that the ratchet teeth 135 can be disposed on the circumferential surface of the ratchet shaft 131, on the circumferential surface of any protrusion at any position on the circumferential surface of the ratchet shaft 131, on the inner circumferential surface of the ratchet sleeve 133, on the outer circumferential surface of the ratchet sleeve 133, or as a ratchet assembly in the form of an over-clutch mechanism; further details are omitted here.

[0125] In the above embodiments, the commutator 12 can be integrally formed or composed of multiple detachable components. The arrangement of the multiple detachable components can be any feasible method proposed in this invention, which is easy for those skilled in the art to conceive of and will not be elaborated further.

[0126] This invention proposes an electric ratchet tool, comprising: a drive assembly 14 having a drive output shaft 141; a ratchet assembly 13 connected to the drive output shaft 141; a working assembly 11 having a power output shaft 111 connected to the ratchet assembly 13; and a housing 16 for at least partially accommodating the drive assembly 14. The electric ratchet tool further comprises a reversing assembly 12, which has a first reversing element 121 and a second reversing element 122. The first reversing element 121 is used to switch the rotational drive direction of the ratchet assembly, and the second reversing element 122 is used to switch the rotational direction of the drive output shaft 141. At least one of the first reversing element 121 and the second reversing element 122 is provided with a first reversing position and a second reversing position along the drive output shaft 141. This invention solves the problem that the ratchet assembly and the drive assembly need to be reversed simultaneously, realizing the function of switching both components simultaneously with a single reversing assembly, thus facilitating user operation. The ratchet assembly 13 can be any ratchet structure readily conceived by those skilled in the art, and will not be described in detail here.

[0127] In some optional embodiments, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees. The first commutator 121 can be switched by direct forward and backward movement, by rotational movement, by a combination of forward and backward movement and rotational movement, or by other methods readily conceived by those skilled in the art. For ease of operation, the displacement stroke of the first commutator 21 along the drive output shaft 141 is less than 20 mm or the rotation angle is less than 150 degrees.

[0128] The ratchet assembly 13 has a ratchet shaft 131, ratchet teeth 135 and ratchet pawl 132. The first reversing member has a reversing part 1211. When the first reversing member 121 or the second reversing member 12 switches between the first reversing position and the second reversing position, the ratchet teeth 135 and the ratchet pawl 132 are in a first engagement state or a second engagement state through the first reversing part 121.

[0129] In some alternative embodiments, the drive assembly 14 has a transmission unit 142 and a shaft locking unit 143. When the user performs manual operation, the transmission unit 142 stops working, and the shaft locking unit 143 is used to fix the drive output shaft 14 and the housing 16, thereby ensuring that the ratchet tool works normally in manual mode.

[0130] In some alternative embodiments, the transmission unit 142 has a gear set 1421 and a gear set housing 1422. When the user performs manual operation, the transmission unit 142 stops working, that is, the gear set 1421 stops working. The shaft locking unit 143 is used to fix the drive output shaft 141 and the gear set housing 1422. Since the gear set housing 1422 is relatively fixed to the housing 16, the shaft locking unit 143 is used to fix the drive output shaft 141 and the housing 16, thereby ensuring that the ratchet tool works normally in manual mode. Of course, the shaft locking unit 143 can also be directly set between the housing 16 and the drive output shaft 141, or set between other components fixedly assembled with the housing 16 and the drive output shaft 141, thereby realizing the fixation of the drive output shaft 141 and the housing 16 by the shaft locking unit 143. This is easy for those skilled in the art to conceive of, and will not be described in detail here.

[0131] In some preferred embodiments, the ratchet teeth 135 are disposed on the circumferential surface of the ratchet shaft 131 or the circumferential surface of the ratchet sleeve 133. Those skilled in the art will readily conceive of the following: the circumferential surface of the ratchet shaft 131; the circumferential surface of any protrusion on the circumferential surface of the ratchet shaft 131; the inner circumferential surface of the ratchet sleeve 133; the outer circumferential surface of the ratchet sleeve 133; or a ratchet assembly in the form of an over-clutch mechanism. Further details are omitted here.

[0132] Based on all the above embodiments, the reversing switch 124 is disposed on the housing 16. It can be disposed inside the housing 16, outside the housing 16, or partially disposed inside or outside the housing 16. The reversing switch 124 can be directly mounted on the housing 16, or indirectly mounted on the housing 16 through cooperation with other components. This is readily apparent to those skilled in the art and will not be elaborated upon here. Since the first reversing member 121 and the second reversing member 122 rotate with the ratchet assembly 13 in electric operating mode, and at least partially disposed on the second reversing member corresponding to the reversing switch 124, the second reversing member 122 can switch the rotation direction of the drive output shaft 141 simultaneously with switching the rotation drive direction of the ratchet assembly 13, regardless of its rotational position.

[0133] This enables convenient reversing operations. Of course, in other optional embodiments, the first reversing member 121 and the second reversing member 122 can also be other forms described in this invention, or other forms readily conceived by those skilled in the art, which will not be elaborated here. The above specific embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the design concept and spirit of the present invention, various modifications, substitutions, and improvements made by those skilled in the art to the technical solutions of the present invention based on the provided textual description and drawings should all fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. An electric ratchet tool, comprising: The drive assembly has a drive output shaft; A ratchet assembly is connected to the drive output shaft; A working component having a power output shaft connected to the ratchet assembly; A reversing component is used to switch the rotational drive direction of the ratchet assembly; A housing for at least partially accommodating the drive assembly, the ratchet assembly, and the working assembly; The reversing assembly is characterized in that it has a first reversing member and a second reversing member, the first reversing member being disposed on the housing, the first reversing member being used to switch between a first reversing position and a second reversing position, thereby driving the second reversing member to switch between a third reversing position and a fourth reversing position, thus switching the rotational driving direction of the ratchet assembly; wherein, the first reversing member is provided with a first mating part, the second reversing member is provided with a second mating part that mates with the first mating part, the first mating part and the second mating part being used to cause the second reversing member to switch between the third reversing position and the fourth reversing position when the first reversing member switches between the first reversing position and the second reversing position, and when the first reversing member is in the first reversing position and the second reversing position, the projection positions of the first mating part and / or the second mating part on the axis of the drive output shaft do not coincide.

2. The electric ratchet tool according to claim 1, characterized in that, The ratchet assembly has a ratchet shaft, ratchet teeth, and ratchet pawl. The ratchet teeth are disposed on the ratchet shaft. The reversing assembly also has a third reversing member. The second reversing member switches between the third reversing position and the fourth reversing position, driving the third reversing member to put the ratchet teeth and the ratchet pawl into a first engagement state or a second engagement state.

3. The electric ratchet tool according to claim 2, characterized in that, The second reversing member switches between the third reversing position and the fourth reversing position, thereby driving the third reversing member to rotate around the drive output shaft and switch between the fifth reversing position and the sixth reversing position, so that the ratchet teeth and the ratchet pawl are in the first engagement state or the second engagement state.

4. The electric ratchet tool according to claim 3, characterized in that, The second commutator is further provided with a third mating part, and the third commutator is provided with a fourth mating part that mates with the third mating part. The third mating part and the fourth mating part are used to cause the third commutator to rotate around the drive output shaft when the second commutator switches between the third commutation position and the fourth commutation position.

5. The electric ratchet tool according to claim 4, characterized in that, The third mating part is a protrusion provided at one end of the second commutator, and the fourth mating part is an inclined groove provided on the circumferential surface of the third commutator; and / or the third mating part is an inclined groove provided on the circumferential surface of the second commutator, and the fourth mating part is a protrusion provided at one end of the third commutator.

6. The electric ratchet tool according to claim 3, characterized in that, The ratchet assembly further includes a ratchet sleeve. The third reversing member is provided with a plurality of reversing protrusions. The ratchet teeth are polygonal portions located at one end of the ratchet shaft. The ratchet pawls are a plurality of cylinders. The plurality of reversing protrusions and the plurality of cylinders are disposed between the ratchet teeth and the ratchet sleeve, and the plurality of reversing protrusions and the plurality of cylinders are spaced apart. When the third reversing member is in the fifth reversing position, the reversing protrusions are close to one end of the ratchet teeth. When the third reversing member is in the sixth reversing position, the reversing protrusions are close to the other end of the ratchet teeth.

7. The electric ratchet tool according to claim 3, characterized in that, The ratchet assembly further includes a ratchet sleeve, the third reversing member is provided with a reversing protrusion, one end of the ratchet shaft is provided with ratchet teeth, the ratchet pawl is connected to the ratchet sleeve and is movable relative to the ratchet sleeve, and the reversing protrusion is used to make the ratchet pawl and the ratchet teeth be in the first engagement state or the second engagement state when the third reversing member is in the fifth reversing position or the sixth reversing position.

8. The electric ratchet tool according to claim 7, characterized in that, The ratchet assembly further includes a first elastic element and a second elastic element. The ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion. The first ratchet pawl portion is connected to the ratchet sleeve through the first elastic element, and the second ratchet pawl portion is connected to the ratchet sleeve through the second elastic element. The first engagement state is that the first ratchet pawl portion engages with the ratchet teeth, so that the ratchet assembly is in a first rotational driving direction. The second engagement state is that the second ratchet pawl portion engages with the ratchet teeth, so that the ratchet assembly is in a second rotational driving direction.

9. The electric ratchet tool according to claim 3, characterized in that, The ratchet assembly further includes a ratchet sleeve, a reversing protrusion on the third reversing member, ratchet teeth on the ratchet sleeve, and a ratchet pawl connected to and movable relative to the ratchet sleeve. The reversing protrusion is used to position the ratchet pawl and the ratchet teeth in either the first or second engagement state when the third reversing member is in the fifth or sixth reversing position. The ratchet assembly also includes a pin, through which the ratchet pawl is connected to the ratchet shaft and rotatably movable relative to the ratchet shaft. One end of the ratchet pawl has a first ratchet pawl portion, and the other end has a second ratchet pawl portion. In the first engagement state, the first ratchet pawl portion engages with the ratchet teeth, thereby placing the ratchet assembly in a first rotational driving direction. In the second engagement state, the second ratchet pawl portion engages with the ratchet teeth, thereby placing the ratchet assembly in a second rotational driving direction.

10. The electric ratchet tool according to claim 1, characterized in that, The ratchet assembly has a ratchet shaft, ratchet teeth, and ratchet pawl, with the ratchet teeth disposed on the ratchet shaft; the second reversing member switches between the third reversing position and the fourth reversing position, so that the ratchet teeth and the ratchet pawl are in a first engagement state or a second engagement state.

11. The electric ratchet tool according to claim 10, characterized in that, The ratchet assembly further includes a ratchet sleeve, and the ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion. The first ratchet pawl portion and the second ratchet pawl portion are connected to the ratchet sleeve and are movable relative to the ratchet sleeve. The ratchet teeth are disposed on the circumferential surface of the ratchet shaft. In the first engagement state, the first ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a first rotational driving direction. In the second engagement state, the second ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a second rotational driving direction.

12. The electric ratchet tool according to claim 11, characterized in that, The ratchet assembly further includes a first elastic element and a second elastic element, wherein the first elastic element is disposed between the first ratchet pawl and the ratchet sleeve, and the second elastic element is disposed between the second ratchet pawl and the ratchet sleeve.

13. The electric ratchet tool according to claim 11, characterized in that, The second commutator has at least one commutation section, which is a deformable element.

14. The electric ratchet tool according to claim 1, characterized in that, The reversing assembly also includes a reversing switch, which is used to switch the rotation direction of the drive output shaft simultaneously when the first reversing member switches between a first reversing position and a second reversing position.

15. The electric ratchet tool according to claim 1, characterized in that, The drive assembly includes a shaft lock unit and a transmission unit. The shaft lock unit is used to fix the drive output shaft to the housing when the transmission unit stops working.

16. The electric ratchet tool according to claim 1, characterized in that, The commutation component is also used to simultaneously switch the rotation direction of the drive output shaft when the first commutator switches between the first commutation position and the second commutation position.

17. The electric ratchet tool according to claim 10, characterized in that, The ratchet assembly further includes a ratchet sleeve, and the ratchet pawl includes a first ratchet pawl portion and a second ratchet pawl portion. The first ratchet pawl portion and the second ratchet pawl portion are movable relative to the ratchet sleeve. The ratchet teeth are disposed on the circumferential surface of the ratchet shaft. In the first engagement state, the first ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a first rotational driving direction. In the second engagement state, the second ratchet pawl portion engages with the ratchet teeth, causing the ratchet assembly to be in a second rotational driving direction.

18. The electric ratchet tool according to claim 10, characterized in that, The first commutator also has an operating part, and the first mating part is detachably connected to the operating part shown.

19. The electric ratchet tool according to claim 18, characterized in that, The housing is provided with a receiving groove for at least partially accommodating the operating part.

20. The electric ratchet tool according to claim 1, characterized in that, The ratchet assembly has a ratchet sleeve, a ratchet shaft, ratchet teeth, and ratchet pawls, with the ratchet teeth disposed on the circumferential surface of the ratchet shaft or the circumferential surface of the ratchet sleeve.

21. An electric ratchet tool, comprising: The drive assembly has a drive output shaft; A ratchet assembly is connected to the drive output shaft; A working component having a power output shaft connected to the ratchet assembly; Housing for at least accommodating the drive assembly; The electric ratchet tool is characterized in that it further comprises a reversing element for switching the rotational drive direction of the ratchet assembly and the rotational direction of the drive output shaft.

22. The electric ratchet tool according to claim 21, characterized in that, The reversing member has a first reversing part and a second reversing part. The first reversing part is used to switch the rotational drive direction of the ratchet assembly, and the second reversing part is used to switch the rotational direction of the drive output shaft. The first reversing part is used to switch between a first reversing position and a second reversing position, thereby switching the rotational drive direction of the ratchet assembly and the rotational direction of the drive output shaft. The first reversing position and the second reversing position are two different positions set along the drive output shaft.

23. The electric ratchet tool according to claim 21, characterized in that, The drive assembly includes a shaft lock unit and a transmission unit. The shaft lock unit is used to fix the drive output shaft to the housing when the transmission unit stops working.

24. The electric ratchet tool according to claim 22, characterized in that, The first reversing part is an elastic component.

25. The electric ratchet tool according to claim 22, characterized in that, The ratchet power tool also has a reversing switch, which is used to switch the rotation direction of the drive output shaft simultaneously when the first reversing part switches between a first reversing position and a second reversing position.

26. An electric ratchet tool, comprising: The drive assembly has a drive output shaft; A ratchet assembly is connected to the drive output shaft; A working component having a power output shaft connected to the ratchet assembly; Housing for at least accommodating the drive assembly; The electric ratchet tool is characterized in that it further comprises a reversing assembly, the reversing assembly having a first reversing member and a second reversing member, the first reversing member being used to switch the rotational drive direction of the ratchet assembly, the second reversing member being used to switch the rotational direction of the drive output shaft, the first reversing member and the second reversing member rotating with the ratchet assembly, and at least one of the first reversing member and the second reversing member having a first reversing position and a second reversing position along the drive output shaft.

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