Power wrench

Abstract

The utility model discloses a power wrench which comprises a shell, a swing piece, a driving assembly and an output piece. The swinging part is rotatably arranged on the shell along a first rotating direction and a second rotating direction which are opposite to each other; the driving assembly is in transmission connection with the swing part so as to drive the swing part to swing in the first rotation direction and the second rotation direction. The output part is connected with the swing part through the one-way bearing, when the swing part rotates in the first rotating direction, the one-way bearing is locked so that the swing part can drive the output part to rotate in the first rotating direction, and when the swing part rotates in the second rotating direction, the output part can rotate relative to the swing part. The output piece is provided with a first screwing part and a second screwing part which are oppositely arranged in the first direction. According to the power wrench, the structure can be simplified, the production difficulty is reduced, and the production cost is reduced. In addition, the power wrench can avoid ratchet transmission, so that limiting teeth of a wheel can be prevented from being damaged, and the service life of the power wrench is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of wrenches, in particular to a power wrench. Background Art

[0002] A ratchet wrench is a tool for tightening and loosening threaded parts. The rotation direction of the ratchet wrench is adjustable so that the threaded parts can be screwed in or out.

[0003] However, the ratchet wrench in the prior art has a complex structure, is difficult to produce, and has a high cost. In addition, the ratchet wrench in the prior art adopts a ratchet transmission, and the limiting teeth of the ratchet are easily damaged, thereby affecting the service life of the ratchet wrench. Utility Model Content

[0004] The purpose of the utility model is to at least solve the problems of the ratchet wrench having a complex structure, being difficult to produce, being high in cost, and having a short service life. This purpose is achieved by:

[0005] The utility model proposes a power wrench, which includes a housing, a swinging member, a driving assembly and an output member. The swinging member can be rotatably arranged on the housing along a first rotation direction and a second rotation direction, and the first rotation direction is opposite to the second rotation direction; the driving assembly is transmission-connected with the swinging member and can drive the swinging member to swing along the first rotation direction and the second rotation direction; the output member is connected to the swinging member through a one-way bearing, and when the swinging member rotates along the first rotation direction, the one-way bearing is locked, the swinging member can drive the output member to rotate along the first rotation direction, and when the swinging member rotates along the second rotation direction, the output member can rotate relative to the swinging member, and the output member is provided with a first screwing part and a second screwing part which are oppositely arranged along the first direction, and the first screwing part and the second screwing part are respectively suitable for connecting with an external connecting member, and the first direction is perpendicular to the first rotation direction and the second rotation direction.

[0006] The power wrench of the embodiment of the utility model is provided with a one-way bearing for transmission, so that the output member can rotate along the first rotation direction and can avoid the output member from rotating along the second rotation direction. By providing the output member with a first screwing part and a second screwing part arranged oppositely along the first direction, the first screwing part and the second screwing part can make the screw member rotate clockwise or counterclockwise when connected to the threaded member. The power wrench implemented by the utility model can avoid transmission through a complex mechanism, thereby simplifying the structure, reducing the difficulty of production and reducing production costs. Moreover, the power wrench of the embodiment of the utility model can avoid the use of ratchet transmission, thereby avoiding damage to the limit teeth of the ratchet, thereby increasing the service life.

[0007] In addition, the power wrench according to the utility model may also have the following additional technical features:

[0008] In some embodiments, the output member has a first end and a second end arranged opposite to each other along the first direction, the first end and the second end are respectively located on both sides of the swinging member along the first direction, the first screwing portion is arranged at the first end, the second screwing portion is arranged at the second end, and the first screwing portion and the second screwing portion are suitable for being embedded in the external connecting member.

[0009] In some embodiments, the first screwing portion and the second screwing portion are both provided with a first gear hole, a first elastic member and a first gear ball, a portion of the first gear ball is located in the first gear hole, and another portion of the first gear ball is located outside the first gear hole, the first elastic member is arranged in the first gear hole and abuts against the first gear ball, and the first elastic member is in a compressed state so that the first gear ball abuts against the inner wall surface of the first gear hole.

[0010] In some embodiments, the first screwing portion is a first mounting groove, the second screwing portion is a second mounting groove, the output member has a first end and a second end oppositely arranged along the first direction, the first mounting groove is arranged at the first end, the second mounting groove is arranged at the second end, the first mounting groove and the second mounting groove both extend along the first direction, and the first mounting groove and the second mounting groove are respectively suitable for being sleeved on the external connecting member.

[0011] In some embodiments, the output member is provided with a third mounting groove, the third mounting groove is located between the first mounting groove and the second mounting groove along the first direction, the third mounting groove extends along the first direction, and the first mounting groove and the second mounting groove are both connected to the third mounting groove.

[0012] In some embodiments, the swinging member is provided with a first swinging part and a second swinging part, the first swinging part and the second swinging part are arranged at intervals along the circumference of the swinging member, the driving component includes a motor and a transmission device connected to the motor, the transmission device is located between the first swinging part and the second swinging part, the transmission device has a first abutment position and a second abutment position, the transmission device located at the first abutment position abuts against the first swinging part to be able to drive the first swinging part to rotate along the first rotation direction, and the transmission device located at the second abutment position abuts against the second swinging part to be able to drive the second swinging part to rotate along the second rotation direction.

[0013] In some embodiments, the transmission device includes an intermediate shaft and an eccentric shaft, the motor is transmission-connected to one end of the intermediate shaft to drive the intermediate shaft to rotate along a third rotation direction, the eccentric shaft is arranged at the other end of the intermediate shaft, the rotation axis of the eccentric shaft is parallel to the rotation axis of the intermediate shaft and is arranged at intervals, the eccentric shaft is arranged between the first swinging part and the second swinging part, the eccentric shaft is rotatable between the first abutment position and the second abutment position, and the axial direction of the intermediate shaft is perpendicular to the first direction.

[0014] In some embodiments, the housing includes a first housing and a second housing, the swinging member is disposed in the first housing, the driving assembly is disposed in the second housing, and the first housing is rotatably disposed in the second housing along a circumferential direction of the second housing.

[0015] In some embodiments, one of the first shell and the second shell is provided with a second shift hole, a second elastic member and a second shift ball, the other of the first shell and the second shell is provided with a mounting hole, a portion of the second shift ball is provided in the second shift hole, another portion of the second shift ball is located outside the second shift hole and abuts against the mounting hole, the second elastic member is provided in the second shift hole and abuts against the second shift ball, and the second elastic member is in a compressed state so that the second shift ball abuts against the inner wall surface of the mounting hole.

[0016] In some embodiments, one of the first shell and the second shell is provided with a guide portion extending along the circumferential direction of the second shell, and the other of the first shell and the second shell is provided with a guide groove extending along the circumferential direction of the second shell, and the guide portion is arranged in the guide groove in a manner that it can rotate along the circumferential direction of the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0018] Figure 1 is a schematic diagram of a power wrench of some embodiments of the utility model;

[0019] Figure 2 yes Figure 1 A partial schematic diagram of a power wrench in FIG.

[0020] Figure 3 yes Figure 2 Partial schematic diagram of the power wrench;

[0021] Figure 4 is a schematic diagram of output members of some embodiments of the utility model;

[0022] Figure 5 yes Figure 1 The enlarged cross-sectional view at A in the middle;

[0023] Figure 6 It is a schematic diagram of some usage states of the power wrench of some embodiments of the utility model;

[0024] Figure 7 Schematic diagrams of other usage states of the power wrench in some embodiments of the utility model;

[0025] Figure 8 Schematic diagrams of power wrenches of other embodiments of the utility model;

[0026] Fig. 9 It is a schematic diagram of output members of other embodiments of the utility model;

[0027] Fig.10 yes Fig. 9 A half-section view of the output part in FIG.

[0028] Fig.11 yes Figure 2 Schematic diagram of the intermediate shaft and output shaft.

[0029] The reference numerals in the accompanying drawings represent the following:

[0030] 100. Power wrench;

[0031] 1. Shell; 11. First shell; 12. Second shell; 13. Second gear hole; 14. Second elastic member; 15. Second gear ball; 16. Guide portion; 17. Guide groove; 18. Mounting hole;

[0032] 2. swing member; 21. first swing part; 22. second swing part;

[0033] 3. driving assembly; 31. motor; 32. transmission device; 321. intermediate shaft; 322. eccentric shaft; 3221. eccentric shaft body; 3222. rotating part; 323. planetary gear assembly;

[0034] 4. output member; 41. first screwing portion; 42. second screwing portion; 43. first end portion; 44. second end portion; 45. first gear hole; 46. first elastic member; 47. first gear ball; 48. first mounting groove; 49. second mounting groove; 40. third mounting groove;

[0035] 5. One-way bearing. DETAILED DESCRIPTION

[0036] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0039] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the prior art, a one-way bearing is a bearing that can rotate freely in one direction and is locked in the other direction. The one-way bearing is used to prevent the reversal of the rotating body in the mechanical design, thereby making the steering of the equipment with the one-way bearing stable and / or making the equipment with the one-way bearing safer.

[0042] For example, a one-way bearing is provided on the fan to prevent the fan from reversing and to stabilize the direction of rotation of the fan.

[0043] For another example, a one-way bearing is provided on a vehicle to prevent the starting mechanism from reversing, thereby avoiding damage to the starting mechanism caused by the reversal of the starting mechanism, thereby improving the safety of the vehicle.

[0044] In order to at least solve the problem that the ratchet wrench in the prior art has a complex structure, is difficult to produce, and has a high cost, and the limit teeth of the ratchet of the ratchet wrench are easily damaged, thereby affecting the service life of the ratchet wrench. The embodiment of the utility model proposes a power wrench 100, which can simplify the structure, reduce the difficulty of production, and reduce the production cost. Moreover, the power wrench 100 of the embodiment of the utility model can avoid the use of ratchet transmission, thereby avoiding damage to the limit teeth of the wheel, thereby increasing the service life.

[0045] Combine the following Figures 1 to 10 A power wrench 100 according to an embodiment of the present invention is described.

[0046] like Figures 1 to 10As shown, the embodiment of the utility model proposes a power wrench 100, which includes a housing 1, a swinging member 2, a driving assembly 3 and an output member 4. The swinging member 2 is rotatably arranged on the housing 1 along a first rotation direction and a second rotation direction, and the first rotation direction and the second rotation direction are opposite; the driving assembly 3 is transmission-connected with the swinging member 2, and can drive the swinging member 2 to swing along the first rotation direction and the second rotation direction; the output member 4 is connected to the swinging member 2 through a one-way bearing 5, when the swinging member 2 rotates along the first rotation direction, the one-way bearing 5 is locked, the swinging member 2 can drive the output member 4 to rotate along the first rotation direction, when the swinging member 2 rotates along the second rotation direction, the output member 4 can rotate relative to the swinging member 2, the output member 4 is provided with a first screwing portion 41 and a second screwing portion 42 arranged oppositely along the first direction, the first screwing portion 41 and the second screwing portion 42 are respectively suitable for connecting with an external connecting member, and the first direction is perpendicular to the first rotation direction and the second rotation direction.

[0047] First rotation direction Figure 1 As shown in a, the second rotation direction Figure 1 As shown in b, the first direction is Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown at c in the figure. As some examples, the first rotation direction is clockwise from the first screwing part 41 to the second screwing part 42, the second rotation direction is counterclockwise from the first screwing part 41 to the second screwing part 42, and the first direction is the extension direction of the output member 4. As some other examples, the first rotation direction is counterclockwise from the first screwing part 41 to the second screwing part 42, the second rotation direction is clockwise from the first screwing part 41 to the second screwing part 42, and the external connecting member can be a sleeve. When it is necessary to screw in or screw out the threaded member, the output member 4 is directly or indirectly connected to the threaded member. Start the drive assembly 3 so that the drive assembly 3 drives the swinging member 2 to swing, and the swinging member 2 rotates along the first rotation direction and the second rotation direction. When the swinging member 2 rotates along the first rotation direction, the one-way bearing is in a locked state, so that the one-way bearing 5 can be transmitted to drive the output member 4 to rotate along the first rotation direction, thereby enabling the output member 4 to be screwed in or screwed out of the threaded member. When the swing member 2 rotates in the second rotation direction, the one-way bearing 5 is in a free rotation state, and the output member 4 and the swing member 2 can rotate relative to each other, thereby preventing the output member 4 from driving the threaded member to rotate in the second rotation direction, and further preventing the output member 4 from reversely screwing in or out of the threaded member. Therefore, the one-way bearing 5 can enable the output member 4 to rotate in the first rotation direction and prevent the output member 4 from rotating in the second rotation direction. It should be noted that the direction from the first screwing portion 41 to the second screwing portion 42 is clockwise. Figure 6 As shown in FIG. 4 , the direction from the second screwing portion 42 to the first screwing portion 41 is counterclockwise. Figure 7 shown.

[0048] Take the first rotation direction from the first screwing part 41 to the second screwing part 42 as an example, which is a clockwise direction. Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, when the screw member needs to be rotated clockwise, the second screwing portion 42 is connected to the screw member, and the second screwing portion 42 rotates clockwise from the first screwing portion 41 to the second screwing portion 42, so as to rotate the screw member in the clockwise direction. Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, when counterclockwise rotation is required on the threaded member, the output member 4 is flipped or rotated 180 degrees so that the first screwing portion 41 is connected to the threaded member, and the first screwing portion 41 rotates counterclockwise when viewed from the second screwing portion 42 to the first screwing portion 41, so as to apply counterclockwise rotation to the threaded member.

[0049] Take the first rotation direction, in which the first screwing part 41 rotates counterclockwise toward the second screwing part 42, as an example. When the screw member needs to be rotated clockwise, the first screwing part 41 is connected to the screw member, and the first screwing part 41 rotates clockwise from the second screwing part 42 to the first screwing part 41, so as to apply clockwise rotation to the screw member. When the screw member needs to be rotated counterclockwise, the output member 4 is turned over or rotated 180 degrees, the second screwing part 42 is connected to the screw member, and the second screwing part 42 rotates counterclockwise from the first screwing part 41 to the second screwing part 42, so as to apply counterclockwise rotation to the screw member.

[0050] Thus, when the output member 4 rotates along the first rotation direction, the first screwing portion 41 and the second screwing portion 42, when connected to the threaded member, can cause the threaded member to rotate clockwise or counterclockwise.

[0051] The power wrench 100 of the embodiment of the utility model is provided with a one-way bearing 5 for transmission, so that the output member 4 can rotate along the first rotation direction and can avoid the output member 4 from rotating along the second rotation direction. By providing the output member 4 with a first screwing portion 41 and a second screwing portion 42 that are arranged oppositely along the first direction, the first screwing portion 41 and the second screwing portion 42 can make the screw member rotate clockwise or counterclockwise when connected to the threaded member. The power wrench 100 implemented by the utility model can avoid transmission through a complex mechanism, thereby simplifying the structure, reducing the difficulty of production and reducing the production cost. Moreover, the power wrench 100 of the embodiment of the utility model can avoid the use of ratchet transmission, thereby avoiding damage to the limit teeth of the ratchet, thereby increasing the service life.

[0052] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the output member 4 has a first end 43 and a second end 44 arranged opposite to each other along a first direction, the first end 43 and the second end 44 are located on both sides of the swing member 2 along the first direction respectively, the first screwing portion 41 is arranged at the first end 43, and the second screwing portion 42 is arranged at the second end 44, and the first screwing portion 41 and the second screwing portion 42 are suitable for being embedded in an external connecting member.

[0053] By locating the first screwing portion 41 at the first end portion 43 and the second screwing portion 42 at the second end portion 44 , the first screwing portion 41 and the second screwing portion 42 are conveniently connected to an external connection member, thereby reducing the difficulty of operation for the user.

[0054] like Figure 3 and Figure 4 As shown, in some embodiments, the first screwing portion 41 and the second screwing portion 42 are both provided with a first gear hole 45, a first elastic member 46 and a first gear ball 47, a portion of the first gear ball 47 is located in the first gear hole 45, and another portion of the first gear ball 47 is located outside the first gear hole 45, the first elastic member 46 is arranged in the first gear hole 45 and abuts against the first gear ball 47, and the first elastic member 46 is in a compressed state so that the first gear ball 47 abuts against the inner wall surface of the first gear hole 45.

[0055] When the first screwing portion 41 is embedded in the external connecting member, under the action of the first elastic member 46, another part of the first gear ball 47 is located outside the first gear hole 45 and abuts against the external connecting member to achieve installation between the first screwing portion 41 and the external connecting member.

[0056] When the second screwing portion 42 is embedded in the external connecting member, under the action of the first elastic member 46, another part of the first gear ball 47 is located outside the first gear hole 45 and abuts against the external connecting member to achieve installation between the second screwing portion 42 and the external connecting member.

[0057] Through the first elastic member 46 and the first gear ball 47, the external connecting member can be more firmly installed on the first screwing part 41, reducing the risk of the first screwing part 41 and the external connecting member falling off. Moreover, the external connecting member can be more firmly installed on the second screwing part 42, reducing the risk of the second screwing part 42 and the external connecting member falling off.

[0058] like Figure 8 , Fig. 9 and Fig.10As shown, in some embodiments, the first screwing portion 41 is a first mounting groove 48, the second screwing portion 42 is a second mounting groove 49, the output member 4 has a first end 43 and a second end 44 arranged opposite to each other along a first direction, the first mounting groove 48 is arranged at the first end 43, the second mounting groove 49 is arranged at the second end 44, the first mounting groove 48 and the second mounting groove 49 both extend along the first direction, and the first mounting groove 48 and the second mounting groove 49 are respectively suitable for being sleeved on an external connecting member.

[0059] By locating the first installation groove 48 at the first end 43 and the second installation groove 49 at the second end 44 , the first screwing portion 41 and the second screwing portion 42 are easily connected to an external connection member, thereby reducing the difficulty of operation for the user.

[0060] Furthermore, a plurality of protrusions suitable for abutting against the external connecting member are disposed in the first installation groove 48 and the second installation groove 49, so that the external connecting member can be fixed by the protrusions.

[0061] like Fig.10 As shown, in some embodiments, the output member 4 is provided with a third mounting groove 40, the third mounting groove 40 is located between the first mounting groove 48 and the second mounting groove 49 along the first direction, the third mounting groove 40 extends along the first direction, and the first mounting groove 48 and the second mounting groove 49 are both connected to the third mounting groove 40. In other words, the first mounting groove 48 and the second mounting groove 49 are connected through the third mounting groove 40.

[0062] By providing the third mounting groove 40, the rod of the external connector can be inserted through the first mounting groove 48, the second mounting groove 49 and the third mounting groove 40, so that the external connector can be installed through the first mounting groove 48, the second mounting groove 49 and the third mounting groove 40, thereby increasing the installation strength. Moreover, by providing the third mounting groove 40, the installation methods of the external connector can be increased, so that the power wrench of the embodiment of the utility model can adapt to more application scenarios.

[0063] like Figure 2 and Figure 3 As shown, in some embodiments, the swing member 2 is provided with a first swing part 21 and a second swing part 22, and the first swing part 21 and the second swing part 22 are arranged at intervals along the circumference of the swing member 2, and the driving assembly 3 includes a motor 31 and a transmission device 32 which is transmission-connected to the motor 31, and the transmission device 32 is located between the first swing part 21 and the second swing part 22, and the transmission device 32 has a first abutment position and a second abutment position, and the transmission device 32 located at the first abutment position abuts against the first swing part 21 so as to be able to drive the first swing part 21 to rotate in a first rotation direction, and the transmission device 32 located at the second abutment position abuts against the second swing part 22 so as to be able to drive the second swing part 22 to rotate in the second rotation direction.

[0064] The first abutment position and the second abutment position are both a series of positions.

[0065] When the transmission device 32 is located at the first abutting position, it abuts against the first swinging part 21 to drive the first swinging part 21 to rotate along the first rotation direction, thereby driving the swinging member 2 to rotate along the first rotation direction. When the transmission device 32 is located at the second abutting position, it abuts against the second swinging part 22 to drive the second swinging part 22 to rotate along the second rotation direction, thereby driving the swinging member 2 to rotate along the second rotation direction. The transmission device 32 is driven to move by the motor 31, and the swinging member 2 is driven to rotate along the first rotation direction and the second rotation direction by the transmission device 32, so that the motor 31 can drive the swinging member 2 to swing through the transmission device 32, and the structure of the power wrench 100 of the embodiment of the utility model is reasonable.

[0066] like Figure 2 As shown, in some embodiments, the transmission device 32 includes an intermediate shaft 321 and an eccentric shaft 322. The motor 31 is transmission-connected to one end of the intermediate shaft 321 to drive the intermediate shaft 321 to rotate along a third rotation direction. The eccentric shaft 322 is arranged at the other end of the intermediate shaft 321. The rotation axis of the eccentric shaft 322 is parallel to the rotation axis of the intermediate shaft 321 and is arranged at intervals. The eccentric shaft 322 is arranged between the first swinging portion 21 and the second swinging portion 22. The eccentric shaft 322 is rotatable between the first abutting position and the second abutting position. The axial direction of the intermediate shaft 321 is perpendicular to the first direction.

[0067] The third rotation direction is Figure 2 As shown at d in the middle, as an example, the third rotation direction is the circumferential direction of the intermediate shaft 321 .

[0068] When the intermediate shaft 321 rotates, the eccentric shaft 322 performs eccentric motion. When the eccentric shaft 322 is located at the first contact position, the eccentric shaft 322 is biased toward the first swinging part 21, and the eccentric shaft 322 contacts the first swinging part 21 to drive the first swinging part 21 to rotate in the first rotation direction. When the eccentric shaft 322 is located at the second contact position, the eccentric shaft 322 is biased toward the second swinging part 22, and the eccentric shaft 322 contacts the second swinging part 22 to drive the second swinging part 22 to rotate in the second rotation direction.

[0069] The rotation of the intermediate shaft 321 is converted into the swinging motion of the swinging member 2 through the eccentric shaft 322 , so that the motor 31 can drive the swinging member 2 to swing, and the structure of the power wrench 100 of the embodiment of the utility model is reasonable.

[0070] like Figure 2 and Fig.11As shown, specifically, the eccentric shaft 322 includes a rotating member 3222 and an eccentric shaft body 3221. The rotating member 3222 is rotatably disposed on the eccentric shaft body 3221. When the eccentric shaft 322 is located at a first abutting position, the eccentric shaft body 3221 abuts against the first swinging portion 21 through the rotating member 3222. When the eccentric shaft 322 is located at a second abutting position, the eccentric shaft body 3221 abuts against the second swinging portion 22 through the rotating member 3222.

[0071] When the rotating member 3222 contacts the first swing part 21, it can rotate relative to the first swing part 21, thereby more stably driving the first swing part 21 to rotate. When the rotating member 3222 contacts the second swing part 22, it can rotate relative to the second swing part 22, thereby more stably driving the second swing part 22 to rotate.

[0072] like Figure 2 As shown, specifically, the transmission device 32 further includes a planetary gear assembly 323, and one end of the intermediate shaft 321 is transmission-connected to the motor 31 via the planetary gear assembly 323. The output speed of the motor 31 can be reduced by the planetary gear assembly 323, so that the speed of the intermediate shaft 321 is in a reasonable state.

[0073] In some embodiments, when the first screwing portion 41 needs to be flipped so that the second screwing portion 42 can be connected to the threaded member, the power wrench 100 is flipped as a whole to flip the first screwing portion 41 so that the second screwing portion 42 can be connected to the threaded member; when the second screwing portion 42 needs to be flipped so that the first screwing portion 41 can be connected to the threaded member, the power wrench 100 is flipped as a whole to flip the second screwing portion 42 so that the first screwing portion 41 can be connected to the threaded member.

[0074] like Figure 5 As shown, in some embodiments, the shell 1 includes a first shell 11 and a second shell 12, the swing member 2 is disposed in the first shell 11, the drive assembly 3 is disposed in the second shell 12, and the first shell 11 is rotatably disposed in the second shell 12 along the circumferential direction of the second shell 12.

[0075] The output member 4 and the one-way bearing 5 are both arranged on the first shell 11. When the first shell 11 rotates relative to the second shell 12, the output member 4 rotates with the rotation of the first shell 11, so that the first screwing part 41 and the second screwing part 42 located on the output member 4 rotate, so as to adjust the position of the first screwing part 41 and the second screwing part 42.

[0076] When it is necessary to flip the first screwing part 41 so that the second screwing part 42 can be connected to the threaded component, the first shell 11 is rotated to flip the first screwing part 41 so that the second screwing part 42 can be connected to the threaded component; when it is necessary to flip the second screwing part 42 so that the first screwing part 41 can be connected to the threaded component, the first shell 11 is rotated to flip the second screwing part 42 so that the first screwing part 41 can be connected to the threaded component.

[0077] The first shell 11 is rotatably disposed on the second shell 12 along the circumferential direction of the second shell 12 , and the positions of the first screwing portion 41 and the second screwing portion 42 can be adjusted by rotating the first shell 11 , so as to simplify the operation difficulty of the user.

[0078] like Figure 5 As shown, in some embodiments, one of the first shell 11 and the second shell 12 is provided with a second gear hole 13, a second elastic member 14 and a second gear ball 15, and the other of the first shell 11 and the second shell 12 is provided with a mounting hole 18, a part of the second gear ball 15 is arranged in the second gear hole 13, and another part of the second gear ball 15 is located outside the second gear hole 13 and abuts against the mounting hole 18, the second elastic member 14 is arranged in the second gear hole 13 and abuts against the second gear ball 15, and the second elastic member 14 is in a compressed state so that the second gear ball 15 abuts against the inner wall surface of the mounting hole 18.

[0079] Under the action of the second elastic member 14 , another part of the second shift ball 15 abuts against the mounting hole 18 to position the first housing 11 and the second housing 12 .

[0080] like Figure 5 As shown, in some embodiments, one of the first shell 11 and the second shell 12 is provided with a guide portion 16 extending along the circumferential direction of the second shell 12, and the other of the first shell 11 and the second shell 12 is provided with a guide groove 17 extending along the circumferential direction of the second shell 12, and the guide portion 16 is arranged in the guide groove 17 in a manner that it can rotate along the circumferential direction of the second shell 12.

[0081] The movement of the first housing 11 is guided by the guide portion 16 and the guide groove 17, so that the movement of the first housing 11 is more accurate. By positioning the guide portion 16 in the guide groove 17, the first housing 11 can be mounted on the second housing 12, thereby simplifying the mounting structure between the first housing 11 and the second housing 12, and further simplifying and reducing the structure of the power wrench 100 of the embodiment of the utility model.

[0082] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A power wrench, characterized in that: include: case; a swinging member, the swinging member being rotatably disposed on the housing along a first rotation direction and a second rotation direction, wherein the first rotation direction and the second rotation direction are opposite; A driving assembly, the driving assembly is in driving connection with the swinging member and is capable of driving the swinging member to swing along the first rotation direction and the second rotation direction; An output member, wherein the output member is connected to the swing member through a one-way bearing, when the swing member rotates along the first rotation direction, the one-way bearing is locked, and the swing member can drive the output member to rotate along the first rotation direction, and when the swing member rotates along the second rotation direction, the output member can rotate relative to the swing member, and the output member is provided with a first screwing portion and a second screwing portion which are arranged oppositely along the first direction, the first screwing portion and the second screwing portion are respectively suitable for connecting with an external connecting member, and the first direction is perpendicular to the first rotation direction and the second rotation direction.

2. The power wrench according to claim 1, characterized in that: The output member has a first end and a second end which are arranged opposite to each other along the first direction, the first end and the second end are respectively located on both sides of the swing member along the first direction, the first screwing portion is arranged at the first end, the second screwing portion is arranged at the second end, and the first screwing portion and the second screwing portion are suitable for being embedded in the external connecting member.

3. The power wrench according to claim 2, characterized in that: The first screwing portion and the second screwing portion are both provided with a first gear hole, a first elastic member and a first gear ball, a part of the first gear ball is located in the first gear hole, and the other part of the first gear ball is located outside the first gear hole, the first elastic member is arranged in the first gear hole and abuts against the first gear ball, and the first elastic member is in a compressed state so that the first gear ball abuts against the inner wall surface of the first gear hole.

4. The power wrench according to claim 1, characterized in that: The first screwing portion is a first mounting groove, the second screwing portion is a second mounting groove, the output member has a first end and a second end that are oppositely arranged along the first direction, the first mounting groove is arranged at the first end, the second mounting groove is arranged at the second end, the first mounting groove and the second mounting groove both extend along the first direction, and the first mounting groove and the second mounting groove are respectively suitable for being sleeved on the external connecting member.

5. The power wrench according to claim 4, characterized in that: The output member is provided with a third mounting groove, the third mounting groove is located between the first mounting groove and the second mounting groove along the first direction, the third mounting groove extends along the first direction, and the first mounting groove and the second mounting groove are both connected to the third mounting groove.

6. The power wrench according to any one of claims 1 to 5, characterized in that: The swing member is provided with a first swing part and a second swing part, and the first swing part and the second swing part are arranged at intervals along the circumference of the swing member. The driving component includes a motor and a transmission device connected to the motor, and the transmission device is located between the first swing part and the second swing part. The transmission device has a first abutment position and a second abutment position. The transmission device located at the first abutment position abuts against the first swing part to drive the first swing part to rotate along the first rotation direction, and the transmission device located at the second abutment position abuts against the second swing part to drive the second swing part to rotate along the second rotation direction.

7. The power wrench according to claim 6, characterized in that: The transmission device includes an intermediate shaft and an eccentric shaft. The motor is transmission-connected to one end of the intermediate shaft to drive the intermediate shaft to rotate along a third rotation direction. The eccentric shaft is arranged at the other end of the intermediate shaft. The rotation axis of the eccentric shaft is parallel to the rotation axis of the intermediate shaft and is arranged at intervals. The eccentric shaft is arranged between the first swinging part and the second swinging part. The eccentric shaft is rotatable between the first abutment position and the second abutment position. The axial direction of the intermediate shaft is perpendicular to the first direction.

8. The power wrench according to any one of claims 1 to 5, characterized in that: The housing includes a first housing and a second housing, the swinging member is disposed on the first housing, the driving assembly is disposed on the second housing, and the first housing is rotatably disposed on the second housing along a circumferential direction of the second housing.

9. The power wrench according to claim 8, characterized in that: One of the first shell and the second shell is provided with a second gear hole, a second elastic member and a second gear ball, the other of the first shell and the second shell is provided with a mounting hole, a part of the second gear ball is arranged in the second gear hole, the other part of the second gear ball is located outside the second gear hole and abuts against the mounting hole, the second elastic member is arranged in the second gear hole and abuts against the second gear ball, and the second elastic member is in a compressed state so that the second gear ball abuts against the inner wall surface of the mounting hole.

10. The power wrench according to claim 9, characterized in that: One of the first shell and the second shell is provided with a guide portion extending along the circumferential direction of the second shell, and the other of the first shell and the second shell is provided with a guide groove extending along the circumferential direction of the second shell, and the guide portion is arranged in the guide groove in a manner that it can rotate along the circumferential direction of the second shell.

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