Output shaft reversing mechanism and gear box

Abstract

The present invention relates to the technical field of gearboxes, and discloses an output shaft reversing mechanism and a gearbox. The output shaft reversing mechanism comprises: a connecting shaft, rotatably provided with a first gear and a second gear, the first gear and the second gear having opposite rotation directions; a first output shaft, one end of which is used to connect to a power source, and is connected in cooperation with the connecting shaft so that the torque of the power source is transmitted to the first gear and the second gear; a second output shaft, connected in cooperation with the connecting shaft through a transmission assembly so that the torque of the power source is transmitted to the second output shaft; a shift assembly, connected to the connecting shaft through a coupling; the shift assembly can move between the first gear and the second gear along the axial direction of the connecting shaft so that the shift assembly is connected to the first gear or the second gear. The gearbox comprises an output shaft reversing mechanism. The present invention can solve the technical problems of bloated structure and bulky volume of the gearbox in the related art through the above technical solution.

Description

Technical Field

[0001] The present invention relates to the technical field of gear boxes, and in particular to an output shaft reversing mechanism and a gear box. Background Art

[0002] A gearbox is a mechanical transmission device whose core consists of a set of meshing gears and a sealed housing. Its main function is to transmit power through the meshing of gears to achieve speed regulation, torque conversion, and motion direction control.

[0003] Currently, some gearboxes are equipped with an output shaft reversing mechanism to control the forward and reverse rotation of the output shaft of the gearbox. However, the output shaft reversing mechanism is complex and bulky, resulting in a bloated and bulky gearbox structure. Summary of the Invention

[0004] The present application discloses an output shaft reversing mechanism and a gearbox to solve the technical problems of bloated structure and bulky size of gearboxes in related technologies.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application discloses an output shaft reversing mechanism, comprising:

[0007] The connecting shaft is rotatably provided with a first gear and a second gear, and the first gear and the second gear rotate in opposite directions;

[0008] a first output shaft, one end of which is used to connect to the power source and is coupled to the connecting shaft so as to transmit the torque of the power source to the first gear and the second gear;

[0009] a second output shaft, coupled to the connecting shaft via a transmission assembly, so that the torque of the power source is transmitted to the second output shaft;

[0010] A shift assembly is connected to the connecting shaft via a coupling; the shift assembly can move between the first gear and the second gear along the axial direction of the connecting shaft to connect the shift assembly to the first gear or the second gear;

[0011] When the shift assembly is connected to one of the first gear and the second gear, the first output shaft and the second output shaft rotate in the same direction; when the shift assembly is connected to the other of the first gear and the second gear, the first output shaft and the second output shaft rotate in opposite directions.

[0012] In some embodiments, the coupling is slidably connected to the connecting shaft along the axial direction of the connecting shaft and cannot rotate circumferentially relative to the connecting shaft; the first gear is connected to a first external spline via a first elastic member, and the second gear is connected to a second external spline via a second elastic member, and both the first external spline and the second external spline are movable along the radial direction of the connecting shaft;

[0013] When the coupling contacts the first external spline, the first external spline moves away from the axial direction of the first gear and connects to the shift assembly; when the coupling contacts the second external spline, the second external spline moves away from the axial direction of the second gear and connects to the shift assembly.

[0014] In some embodiments, the coupling includes a connecting portion and two stop portions; the two stop portions are connected to both axial ends of the connecting portion, and the two stop portions are respectively used to contact the first external spline and the second external spline to move the first external spline and the second external spline.

[0015] In some solutions, both stop portions can be forced to separate from the connecting portion so that the stop portions move along the axial direction of the connecting portion;

[0016] The coupling passes through a dead point position during the process of moving toward the first gear or the second gear. When the coupling is at the dead point position, the shift assembly overlaps with the radial projection of the first gear or the second gear along the connecting shaft; when the coupling passes through the dead point position and moves toward the first gear or the second gear, the stop portion separates from the connecting portion so that the stop portion contacts the first external spline or the second external spline.

[0017] In some solutions, the connecting portion is provided with a first clamping hole, the two stop portions are respectively provided with a second clamping hole, and the two second clamping holes are connected to the first clamping holes through a sliding groove;

[0018] One end of the shift assembly extends into the sliding groove and can be limitedly matched with the first clamping hole and the second clamping hole, and can be separated by force.

[0019] In some embodiments, the connecting shaft is provided with one of a limiting groove or a limiting protrusion, and the connecting portion is provided with the other of the limiting groove or the limiting protrusion; the limiting protrusion is embedded in the limiting groove and can move along the extension direction of the limiting groove;

[0020] And / or, one of the stop portion and the connecting portion is provided with a guide hole, and the other is provided with a guide rod, and the guide rod is engaged with the guide hole;

[0021] And / or, one of the contact surfaces between the stop portion and the first external spline is an inclined surface;

[0022] And / or, one of the contact surfaces between the stop portion and the second external spline is an inclined surface.

[0023] In some aspects, the shift assembly includes a moving portion, a rotating portion, and a toggle member;

[0024] The rotating part is provided with a clamping protrusion, and as the shift assembly moves, the clamping protrusion is connected with the connecting part or the stop part;

[0025] The moving part is rotationally connected to the connecting part and is connected to the toggle member; the toggle member is used to drive the moving part to move along the axial direction of the connecting shaft.

[0026] In some embodiments, the first output shaft is provided with a third gear and a fourth gear, the third gear is engaged with one of the first gear and the second gear, and the fourth gear is connected to the second gear through a fifth gear so that the rotation directions of the first gear and the second gear are opposite.

[0027] In some embodiments, the transmission assembly includes a plurality of sixth gears, the connecting shaft is provided with first external teeth, the second output shaft is provided with second external teeth, and the first external teeth and the second external teeth are respectively engaged with the plurality of sixth gears.

[0028] In a second aspect, the present application further discloses a gearbox, comprising the output shaft reversing mechanism in the first aspect.

[0029] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0030] The output shaft reversing mechanism of the present application, when the shift assembly is connected to the first gear or the second gear, the shift assembly and the coupling restrict the relative sliding of the first gear or the second gear and the connecting shaft in the circumferential direction, thereby allowing the first gear or the second gear to drive the connecting shaft to rotate. When the connecting shaft rotates, the connecting shaft is connected to the second output shaft through the transmission assembly, thereby causing the second output shaft to rotate synchronously, so that the first output shaft and the second output shaft rotate in the same and opposite directions. The output shaft reversing mechanism integrates the first and second gears required for forward and reverse rotation on the same connecting shaft and directly connects them to the target gear through axial sliding of the shift assembly. This eliminates the additional idler gear set, multiple shaft systems, and complex linkage structures in traditional reversing mechanisms, making the overall layout highly compact along a single axis, significantly reducing the equipment volume and installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 The output shaft reversing mechanism disclosed in some embodiments of the present application is axonometric Figure 1 ;

[0033] Figure 2 The output shaft reversing mechanism disclosed in some embodiments of the present application is axonometric Figure 2 ;

[0034] Figure 3is a schematic diagram of the matching relationship between the rotating part and the first gear and the second gear disclosed in some embodiments of the present application;

[0035] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0036] Figure 5 is a front view of a shift assembly disclosed in some embodiments of the present application;

[0037] Figure 6 is an axonometric view of the coupling disclosed in some embodiments of the present application.

[0038] In the picture:

[0039] 100-connecting shaft, 110-first gear, 111-first external spline, 120-second gear, 121-second external spline, 130-limiting groove;

[0040] 200 - shift assembly, 210 - rotating part, 211 - engaging protrusion, 220 - moving part, 230 - toggle member, 231 - handle, 232 - connecting rod, 240 - slide rod;

[0041] 300-first output shaft, 310-third gear, 320-fourth gear, 330-fifth gear;

[0042] 400-second output shaft;

[0043] 500-sixth gear;

[0044] 600-coupling, 601-slide groove, 610-connecting portion, 611-guide hole, 612-first clamping hole, 613-limiting protrusion, 620-stop portion, 621-second clamping hole, 622-guide rod. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0046] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0047] Some gearboxes are equipped with an output shaft reversing mechanism to control forward and reverse rotation of the output shaft. However, this mechanism is complex. Traditional output shaft reversing mechanisms require additional idler gears, multiple clutches, or a complex lever system to achieve reverse rotation, resulting in a bulky and bulky gearbox.

[0048] The following is combined with Figures 1 to 6 , an output shaft reversing mechanism and a gearbox provided by the present application are described in detail through specific embodiments and their application scenarios.

[0049] Some embodiments of the present application disclose an output shaft reversing mechanism, including a connecting shaft 100 , a shift assembly 200 , a first output shaft 300 , a second output shaft 400 , a transmission assembly, and a coupling 600 .

[0050] like Figure 1 and Figure 2 As shown, the connecting shaft 100 is rotatably provided with a first gear 110 and a second gear 120, which rotate in opposite directions. By directly providing the first gear 110 and the second gear 120 with opposite rotation directions on the connecting shaft 100, the shift assembly 200 only needs to move axially to directly switch the rotation direction of the second output shaft 400, without the need for an additional idler gear or clutch device, significantly improving the structural compactness, switching response speed, and transmission reliability.

[0051] like Figure 1 and Figure 2 As shown, one end of the first output shaft 300 is used to connect to the power source and is coupled to the connecting shaft 100 to transmit the torque of the power source to the first gear 110 and the second gear 120. The power source is used to drive the first output shaft 300 to rotate, and because the first output shaft 300 is also coupled to the connecting shaft 100, the first gear 110 and the second gear 120 rotate synchronously.

[0052] like Figure 1 and Figure 2As shown, the second output shaft 400 is connected to the connecting shaft 100 through a transmission assembly, so that the torque of the power source is transmitted to the second output shaft 400. When the connecting shaft 100 rotates, the second output shaft 400 rotates synchronously because the connecting shaft 100 is connected to the second output shaft 400 through the transmission assembly.

[0053] As preferred in this embodiment, the power source is preferably a motor with a reducer.

[0054] As preferred in this embodiment, the first output shaft 300 and the second output shaft 400 are respectively connected to screws, so that the two screws rotate in the same direction or in opposite directions according to different usage requirements.

[0055] like Figure 3 and Figure 4 As shown, the coupling 600 is disposed on the connecting shaft 100, and the shift assembly 200 is connected to the connecting shaft 100 via the coupling 600. The shift assembly 200 can move between the first gear 110 and the second gear 120 along the axial direction of the connecting shaft 100 to connect the shift assembly 200 to the first gear 110 or the second gear 120. When the shift assembly 200 is connected to the first gear 110 or the second gear 120, the shift assembly 200 and the coupling 600 restrict the relative sliding of the first gear 110 or the second gear 120 and the connecting shaft 100 in the circumferential direction, thereby allowing the first gear 110 or the second gear 120 to drive the connecting shaft 100 to rotate.

[0056] The design of the shift assembly 200 being directly connected to the connecting shaft 100 and movable along its axial direction between the first gear 110 and the second gear 120 allows the reversing operation to directly switch the connection with the first gear 110 or the second gear 120 with only a single axial movement, eliminating the complex separation and engagement process required for traditional reversing, greatly improving operating efficiency and reducing switching time.

[0057] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, when the shift assembly 200 is connected to one of the first gear 110 and the second gear 120, the first output shaft 300 and the second output shaft 400 rotate in the same direction. When the shift assembly 200 is connected to the other of the first gear 110 and the second gear 120, the first output shaft 300 and the second output shaft 400 rotate in opposite directions. By selectively connecting the shift assembly 200 to either the first gear 110 or the second gear 120, the mechanism can precisely control the first output shaft 300 and the second output shaft 400 to rotate in the same or opposite directions with only a single axial operation, significantly improving operational efficiency and reducing shifting time.

[0058] In some embodiments, when the shift assembly 200 is connected to the first gear 110, the rotation directions of the first output shaft 300 and the second output shaft 400 are opposite; when the shift assembly 200 is connected to the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are the same.

[0059] In some embodiments, when the shift assembly 200 is connected to the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are opposite; when the shift assembly 200 is connected to the first gear 110, the rotation directions of the first output shaft 300 and the second output shaft 400 are the same.

[0060] like Figure 3 As shown, the first gear 110 is connected to a first external spline 111 via a first elastic member (not shown in the figure). The first external spline 111 is movable radially along the connecting shaft 100. When the first external spline 111 moves radially outward along the connecting shaft 100, it abuts against the shift assembly 200, thereby coupling the first gear 110 with the shift assembly 200. This in turn drives the connecting shaft 100 to rotate synchronously with the first gear 110 through the shift assembly 200. Furthermore, when the first external spline 111 moves radially outward along the connecting shaft 100, it compresses the first elastic member, causing the first elastic member to store elastic potential energy and drive the first external spline 111 to move radially inward along the connecting shaft 100, causing the first external spline 111 to separate from the shift assembly 200.

[0061] like Figure 3 As shown, the second gear 120 is connected to a second external spline 121 via a second elastic member (not shown). The second external spline 121 is movable radially along the connecting shaft 100. When the second external spline 121 moves radially outward along the connecting shaft 100, it abuts against the shift assembly 200, thereby coupling the second gear 120 with the shift assembly 200. This in turn drives the connecting shaft 100 to rotate synchronously with the second gear 120 through the shift assembly 200. Furthermore, when the second external spline 121 moves radially outward along the connecting shaft 100, it compresses the second elastic member, causing it to store elastic potential energy and drive the second external spline 121 to move radially inward along the connecting shaft 100, causing the second external spline 121 to separate from the shift assembly 200.

[0062] As preferred in this embodiment, the first elastic member and the second elastic member are preferably coil springs.

[0063] like Figure 3 and Figure 4As shown, the coupling 600 is slidably connected to the connecting shaft 100 along the axial direction of the connecting shaft 100 and cannot rotate circumferentially relative to the connecting shaft 100. Due to the axial sliding of the coupling 600 on the connecting shaft 100, as the coupling 600 moves toward the first gear 110, the coupling 600 contacts the first external spline 111, causing the first external spline 111 to move radially outward from the connecting shaft 100 and abut against the shift assembly 200; and as the coupling 600 moves toward the second gear 120, the coupling 600 contacts the second external spline 121, causing the second external spline 121 to move radially outward from the connecting shaft 100 and abut against the shift assembly 200. Correspondingly, in the process of the coupling 600 moving toward the first gear 110, the second external spline 121 moves radially inwardly along the connecting shaft 100 under the action of the second elastic member; in the process of the coupling 600 moving toward the second gear 120, the first external spline 111 moves radially inwardly along the connecting shaft 100 under the action of the first elastic member.

[0064] Furthermore, since the coupling 600 cannot rotate circumferentially relative to the connecting shaft 100, when the shift assembly 200 is connected with the first gear 110 or the second gear 120, the torque of the first gear 110 or the second gear 120 is transmitted to the coupling 600 through the shift assembly 200, thereby causing the coupling 600 to drive the connecting shaft 100 to rotate.

[0065] like Figure 4 and Figure 6 As shown, the coupling 600 includes a connecting portion 610 and two stop portions 620; the two stop portions 620 are connected to both axial ends of the connecting portion 610, and the two stop portions 620 are respectively used to contact the first external spline 111 and the second external spline 121 to move the first external spline 111 and the second external spline 121. As the coupling 600 moves toward the first external spline 111, as the coupling 600 moves, one of the stop portions 620 contacts the first external spline 111, causing the first external spline 111 to move radially outward of the connecting shaft 100 and abut against the shift assembly 200. Accordingly, after the coupling 600 separates from the first external spline 111 or the second external spline 121, under the action of the first elastic member or the second elastic member, the first external spline 111 or the second external spline 121 moves radially inward of the connecting shaft 100.

[0066] The design of the connecting portion 610 of the coupling 600 and the stop portions 620 at both ends of the axial direction allows the two stop portions 620 to contact the first external spline 111 and the second external spline 121 respectively, replacing the traditional lever fork structure with an axially compact push-pull structure, eliminating the need for radial swing space and significantly reducing the volume of the reversing actuator. After the stop portion 620 separates from the first external spline 111 or the second external spline 121, under the action of the first elastic member or the second elastic member, the first external spline 111 or the second external spline 121 moves radially inward along the connecting shaft 100.

[0067] One of the contact surfaces between the stop portion 620 and the first external spline 111 is an inclined surface. This inclined surface design converts the axial displacement of the coupling 600 into a radial force component that causes the first external spline 111 to slide synchronously, thereby better driving the first external spline 111 to move.

[0068] One of the contact surfaces between the stop portion 620 and the second external spline 121 is an inclined surface. This inclined surface design converts the axial displacement of the coupling 600 into a radial force component that causes the second external spline 121 to slide synchronously, thereby better driving the second external spline 121 to move.

[0069] As a preferred embodiment of the present invention, the contact surfaces between the stop portion 620 and the first external spline 111 are both inclined surfaces, and the contact surfaces between the stop portion 620 and the second external spline 121 are both inclined surfaces.

[0070] like Figure 4 and Figure 6 As shown, both stop portions 620 can be forced to separate from the connecting portion 610, allowing the stop portions 620 to move axially along the connecting portion 610. The coupling 600 passes through a dead center position during its movement toward the first gear 110 or the second gear 120. When the coupling 600 is at the dead center position, the shift assembly 200 partially overlaps with the radial projection of the first gear 110 or the second gear 120 along the connecting shaft 100. When the coupling 600 is at the dead center position, the shift assembly 200 partially overlaps with the radial projection of the first gear 110 or the second gear 120 along the connecting shaft 100, forming a pre-engaged state. At this point, the stop portions 620 are still separated from the connecting portion 610, and a certain gap exists between the stop portions 620 and the first external spline 111 or the second external spline 121.

[0071] When the coupling 600 passes the dead point position and moves toward the first gear 110 or the second gear 120, the stop portion 620 separates from the connecting portion 610 so that the stop portion 620 contacts the first external spline 111 or the second external spline 121, and then the first external spline 111 or the second external spline 121 is matched and connected with the shift assembly 200.

[0072] When the coupling 600 moves to the dead point position, the shift assembly 200 and the first gear 110 or the second gear 120 achieve precise overlap in radial projection, but a gap is maintained between the stop portion 620 and the first external spline 111 or the second external spline 121. After being fully aligned, the stop portion 620 moves independently and abuts the first external spline 111 or the second external spline 121, completely eliminating the hard impact of the speed difference caused by the dynamic rotation of the gear and the static cutting-in of the shift assembly 200 in traditional direct meshing, thereby greatly reducing tooth surface wear and reducing impact noise.

[0073] like Figure 6 As shown, the connecting portion 610 is provided with a first engaging hole 612, and the two stop portions 620 are respectively provided with a second engaging hole 621. The two second engaging holes 621 are connected to the first engaging hole 612 via the slide groove 601. One end of the shift assembly 200 extends into the slide groove 601 and can be limitedly engaged with the first engaging hole 612 and the second engaging hole 621, and can be separated by force. When the shift assembly 200 is connected to the first engaging hole 612, the movement of the shift assembly 200 drives the connecting portion 610 and the two stop portions 620 to move synchronously. When the connecting portion 610 moves to the dead point position, under the action of external force, the shift assembly 200 separates from the first engaging hole 612 and slides into one of the second engaging holes 621. As the shift assembly 200 continues to move, the stop portions 620 are forced to separate from the connecting portion 610, allowing the stop portions 620 to move independently. The sliding groove 601 guides the movement of the shift assembly 200 , ensuring that the movement path of the shift assembly 200 can pass through the first engaging hole 612 and the second engaging hole 621 .

[0074] In addition, one end of the shift assembly 200 extends into the slide groove 601, so that the shift assembly 200 and the coupling 600 cannot rotate relative to each other in their circumferential direction, and thus the torque of the first gear 110 or the second gear 120 can drive the connecting shaft 100 to rotate through the shift assembly 200 and the coupling 600.

[0075] like Figure 4 As shown, the connecting shaft 100 is provided with either a limiting groove 130 or a limiting protrusion 613, and the connecting portion 610 is provided with the other of the limiting groove 130 and the limiting protrusion 613. The limiting protrusion 613 is embedded in the limiting groove 130 and can move along the extending direction of the limiting groove 130. The cooperation between the limiting groove 130 and the limiting protrusion 613 ensures that the connecting portion 610 has two dead points when moving along the axial direction of the connecting shaft 100.

[0076] In some embodiments, the connecting shaft 100 is provided with a limiting groove 130 , and the connecting portion 610 is provided with a limiting protrusion 613 .

[0077] In some embodiments, the connecting shaft 100 is provided with a limiting protrusion 613 , and the connecting portion 610 is provided with a limiting groove 130 .

[0078] like Figure 6 As shown, one of the stop portion 620 and the connecting portion 610 is provided with a guide hole 611, and the other is provided with a guide rod 622, which engages with the guide hole 611. The engagement of the guide rod 622 with the guide hole 611 allows the stop portion 620 and the connecting portion 610 to be separated under force. Furthermore, the cooperation between the guide rod 622 and the guide hole 611 guides the movement of the stop portion 620.

[0079] More specifically, a slot is provided around the guide rod 622, and an elastic protrusion is provided within the guide hole 611. The elastic protrusion cooperates with the slot to achieve a snap connection between the guide rod 622 and the guide hole 611. Furthermore, the elastic protrusion can deform under force, thereby separating the elastic protrusion from the slot, thereby achieving the purpose of forcing the stop portion 620 and the connecting portion 610 to separate.

[0080] In some embodiments, the stop portion 620 is provided with a guide hole 611 , and the connecting portion 610 is provided with a guide rod 622 .

[0081] In some embodiments, the stop portion 620 is provided with a guide rod 622 , and the connecting portion 610 is provided with a guide hole 611 .

[0082] like Figure 1 、 Figure 2 and Figure 5 As shown, the shift assembly 200 includes a moving portion 220, a rotating portion 210, and a toggle member 230. The rotating portion 210 is provided with a latching protrusion 211. As the shift assembly 200 moves, the latching protrusion 211 engages with the connecting portion 610 or the stop portion 620. The latching protrusion 211 allows the rotating portion 210 to engage with the driving member in a circumferential direction. As the shift assembly 200 moves, the latching protrusion 211 engages with the connecting portion 610 or the stop portion 620, thereby driving the coupling 600 to move or the stop portion 620 to move independently.

[0083] As a preferred embodiment of this invention, the inner wall of the rotating part 210 and the outer wall of the connecting part 610 are matched at their circumferential upper limit positions, thereby better transmitting the torque of the first gear 110 or the second gear 120 to the connecting shaft 100 through the coupling 600 to drive the connecting shaft 100 to rotate.

[0084] like Figure 5As shown, the movable portion 220 is rotatably connected to the connecting portion 610 and is connected to the toggle member 230; the toggle member 230 is used to drive the movable portion 220 to move axially along the connecting shaft 100. The toggle member 230 is provided, and by operating the toggle member 230, the movable portion 220 can be driven to move axially along the connecting shaft 100, thereby causing the rotating portion 210 to engage with the first gear 110 or the second gear 120, which is simple and convenient to operate.

[0085] Specifically, the toggle member 230 includes a handle 231 and a connecting rod 232. One end of the handle 231 is connected to one end of the connecting rod 232, and the other end of the connecting rod 232 is connected to the ball socket of the movable portion 220. When the handle 231 is rotated, the connecting rod 232 rotates synchronously, thereby causing the connecting rod 232 to drive the movable portion 220 to move.

[0086] It should be noted that the output shaft reversing mechanism is housed within a housing (not shown), which houses a slide bar 240. The movable portion 220 is sleeved on the slide bar 240 and is movable along the extension direction of the slide bar 240. The slide bar 240 guides the sliding movement of the shift assembly 200, ensuring smooth movement. A handle 231 is located outside the housing, with its end extending through the housing and connected to a connecting rod 232, making it easier for the operator to operate the handle 231.

[0087] It should also be noted that, in the process of rotating the handle 231 to drive the moving portion 220 to move, the moving portion 220 will rotate along its circumferential direction. Since the moving portion 220 is rotationally connected to the rotating portion 210, there will be no motion interference.

[0088] like Figure 1 and Figure 2 As shown, the first output shaft 300 is provided with a third gear 310 and a fourth gear 320. The third gear 310 meshes with one of the first gear 110 and the second gear 120, and the fourth gear 320 is connected to the second gear 120 via the fifth gear 330, so that the first gear 110 and the second gear 120 rotate in opposite directions. The third gear 310 directly meshes with one of the first gear 110 and the second gear 120, transmitting rotation in the same direction. At the same time, the fourth gear 320 forcibly changes the rotation direction of the other of the first gear 110 and the second gear 120 through the intermediary of the fifth gear 330, thereby achieving constant counter-rotation of the first gear 110 and the second gear 120.

[0089] In some embodiments, the third gear 310 is engaged with the first gear 110 , and the fourth gear 320 is connected to the second gear 120 via the fifth gear 330 .

[0090] In some embodiments, the third gear 310 is engaged with the second gear 120 , and the fourth gear 320 is connected to the first gear 110 via the fifth gear 330 .

[0091] It should be noted that the first gear 110 and the second gear 120 are rotatably connected to the connecting shaft 100 via bearings, so that when the connecting shaft 100 rotates, the first gear 110 and the second gear 120 do not rotate synchronously with the connecting shaft 100 .

[0092] like Figure 1 and Figure 2 As shown, the transmission assembly includes multiple sixth gears 500. The connecting shaft 100 is provided with a first external tooth pattern, and the second output shaft 400 is provided with a second external tooth pattern. The first external tooth pattern and the second external tooth pattern respectively mesh with the multiple sixth gears 500. Rotation of the connecting shaft 100 simultaneously drives the multiple sixth gears 500 to rotate, which in turn drives the second output shaft 400 to rotate.

[0093] Some embodiments of the present application also disclose a gearbox including an output shaft reversing mechanism.

[0094] It should be noted that, in this document, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such a device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the device comprising the element.

[0095] Furthermore, it should be noted that the scope of the apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0096] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. An output shaft reversing mechanism, characterized in that: include: A connecting shaft is rotatably provided with a first gear and a second gear, wherein the first gear and the second gear rotate in opposite directions; a first output shaft, one end of which is used to connect to a power source and is cooperatively connected to the connecting shaft so as to transmit the torque of the power source to the first gear and the second gear; a second output shaft, coupled to the connecting shaft via a transmission assembly, so that the torque of the power source is transmitted to the second output shaft; a shift assembly connected to the connecting shaft via a coupling; the shift assembly being movable between the first gear and the second gear along the axial direction of the connecting shaft so as to connect the shift assembly to the first gear or the second gear; When the shift assembly is connected to one of the first gear and the second gear, the first output shaft and the second output shaft rotate in the same direction; when the shift assembly is connected to the other of the first gear and the second gear, the first output shaft and the second output shaft rotate in opposite directions; the coupling is slidably connected to the connecting shaft along the axial direction of the connecting shaft and cannot rotate circumferentially relative to the connecting shaft; the first gear is connected to a first external spline via a first elastic member, and the second gear is connected to a second external spline via a second elastic member, and both the first external spline and the second external spline are movable along the radial direction of the connecting shaft; When the coupling contacts the first external spline, the first external spline moves outward in the radial direction of the connecting shaft and connects with the shift assembly; when the coupling contacts the second external spline, the second external spline moves outward in the radial direction of the connecting shaft and connects with the shift assembly; The coupling includes a connecting portion and two stop portions; the two stop portions are connected to the two axial ends of the connecting portion, and the two stop portions are respectively used to contact the first external spline and the second external spline to move the first external spline and the second external spline.

2. The output shaft reversing mechanism according to claim 1, characterized in that: Both of the two stop portions can be separated from the connecting portion by force, so that the stop portions move along the axial direction of the connecting portion; The coupling passes through a dead point position during the process of moving toward the first gear or the second gear. When the coupling is at the dead point position, the shift assembly overlaps with the radial projection of the first gear or the second gear along the connecting shaft; when the coupling passes through the dead point position and moves toward the first gear or the second gear, the stop portion separates from the connecting portion so that the stop portion contacts the first external spline or the second external spline.

3. The output shaft reversing mechanism according to claim 2, characterized in that: The connecting portion is provided with a first clamping hole, and the two stop portions are respectively provided with a second clamping hole, and the two second clamping holes are connected to the first clamping hole through a sliding groove; One end of the shift assembly extends into the sliding groove and can be limitedly engaged with the first clamping hole and the second clamping hole and can be separated by force.

4. The output shaft reversing mechanism according to claim 2, characterized in that: The connecting shaft is provided with one of a limiting groove or a limiting protrusion, and the connecting portion is provided with the other of the limiting groove or the limiting protrusion; the limiting protrusion is embedded in the limiting groove and can move along the extension direction of the limiting groove; And / or, one of the stop portion and the connecting portion is provided with a guide hole, and the other is provided with a guide rod, and the guide rod is engaged with the guide hole; And / or, one of the contact surfaces between the stop portion and the first external spline is an inclined surface; And / or, one of the contact surfaces between the stop portion and the second external spline is an inclined surface.

5. The output shaft reversing mechanism according to claim 2, characterized in that: The shift assembly includes a moving part, a rotating part and a toggle member; The rotating portion is provided with a clamping protrusion, and as the shift assembly moves, the clamping protrusion is connected to the connecting portion or the stop portion; The moving part is rotationally connected to the connecting part and is connected to the toggle member; the toggle member is used to drive the moving part to move along the axial direction of the connecting shaft.

6. The output shaft reversing mechanism according to claim 1, characterized in that: The first output shaft is provided with a third gear and a fourth gear, the third gear is engaged with one of the first gear and the second gear, and the fourth gear is connected to the second gear through a fifth gear so that the first gear and the second gear rotate in opposite directions.

7. The output shaft reversing mechanism according to claim 1, characterized in that: The transmission assembly includes a plurality of sixth gears, the connecting shaft is provided with first external teeth, the second output shaft is provided with second external teeth, and the first external teeth and the second external teeth are respectively engaged with the plurality of sixth gears.

8. A gear box, characterized in that: The invention comprises the output shaft reversing mechanism according to any one of claims 1 to 7.

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