Transmission mechanism in automatic transmission

Abstract

The present invention provides a transmission mechanism in an automatic transmission device, belonging to the technical field of speed change. It solves the problem of poor working stability. It includes an output shaft, a low-speed input component arranged on the output shaft and capable of being engaged and disengaged therewith, and a high-speed input component arranged on the output shaft. Two driving blocks are hinged on the high-speed input component. When the high-speed input component rotates, the two driving blocks can swing and drive the output shaft to rotate. A linkage ring is also sleeved on the output shaft and the two drive blocks are unidirectionally transmitted. Two reset components corresponding to the two driving blocks are also hinged on the high-speed input component. When the speed of the high-speed input component is greater than that of the output shaft, the two reset components can push the linkage ring to rotate relative to the output shaft. When the speed of the output shaft is greater than that of the high-speed input component, the linkage ring can be driven to rotate to push the two reset components to swing. Both reset components are provided with an action part that can push the corresponding driving block to reset when it swings under the action of the linkage ring. It has the advantages of high working stability and sensitive gear switching.

Description

Technical Field

[0001] The invention belongs to the technical field of speed change, and relates to a transmission mechanism in an automatic speed change device. Background Art

[0002] The automatic transmission device is used in electric tricycles or two-wheeled vehicles to realize the forward or reverse movement of the vehicle and the speed change during the forward movement. For example, the transmission mechanism of the automatic transmission device with patent application number 202210101502.8 proposed by the applicant includes a main shaft and a low-speed input gear, a transmission sleeve and a positioning ring all axially fixed on the main shaft, the transmission sleeve is circumferentially fixed to the main shaft and the positioning ring is circumferentially fixed to the housing of the automatic transmission device, the low-speed input gear sleeve is arranged outside the transmission sleeve and a plurality of rollers 1 are arranged between the two, and a connecting piece that is linked to each roller 1 along the circumferential direction of the low-speed input gear is also arranged outside the transmission sleeve, a high-speed input component that can be clutched therewith is provided on the main shaft, the outer wall of the transmission sleeve is a cylindrical surface, the positioning ring abuts against the connecting piece and the positioning ring can generate rotational resistance to the connecting piece, and the inner side of the low-speed input gear has a plurality of bonding surfaces 1 and bonding surfaces 2 that correspond to each roller 1, and the bonding surfaces 1 and the bonding surfaces 2 are arranged at intervals along the circumferential direction, which is equivalent to the low-speed input gear, the transmission sleeve and the roller 1 forming a low-speed input component that can be clutched with the main shaft. The high-speed input assembly includes a high-speed input gear, an inner ring sleeved on the main shaft and forming a linkage relationship with the main shaft, and an outer ring axially fixed outside the inner ring. The main shaft is also sleeved with a rotatable control disk. A roller 2 controlled by the control disk is arranged between the outer ring and the inner ring. The outer side of the inner ring has a movable groove, and the roller 2 is located in the movable groove. When the control disk rotates relative to the inner ring, the roller 2 can be driven to move along the movable groove so that the outer ring and the inner ring are linked or disengaged along the circumferential direction. A chassis is fixed circumferentially on the high-speed input gear, and a plurality of notches are arranged along the circumferential direction on the side of the chassis. A plurality of connecting pieces inserted into the notches are arranged correspondingly on the outer ring along the circumferential direction. The center of the side of the control disk facing away from the inner ring has a cylindrical extension. Two centripetal blocks are hinged on the chassis and fixed with two magnetic blocks. The centripetal blocks are in the shape of circular arcs. The magnetic blocks are arranged at intervals. One end of each centripetal block is respectively adsorbed on the corresponding magnetic block. The two centripetal blocks are arranged outside the extension of the control disk.

[0003] When the vehicle moves forward at a low speed, the low-speed input gear in the low-speed input assembly and the high-speed input gear in the high-speed input assembly both receive power and rotate. Due to the insufficient rotation speed of the high-speed input assembly (due to the transmission ratio, the rotation speed of the high-speed input assembly is always greater than that of the low-speed input assembly), the two centripetal blocks remain stationary, and the low-speed input assembly is combined with the main shaft to transmit power; when the vehicle needs to move forward at a high speed, the rotation speed of the high-speed input gear increases, so that the two centripetal blocks can swing so that one end of each is clamped on the outside of the extension part and drives the control disk to rotate, so that the control disk controls the movement of roller 2 to link the outer ring and the inner ring in the circumferential direction, so that the outer ring drives the inner ring and the main shaft to rotate at a high speed, and the low-speed input assembly is separated from the main shaft.

[0004] However, in the transmission mechanism of the above-mentioned automatic transmission device, the centripetal block relies on the torsion force of the torsion spring for reset, resulting in that the working stability of the transmission mechanism is difficult to ensure: this is because if the torsion force of the torsion spring is set too large, the resistance acting on the centripetal block will be relatively large, making it difficult for the centripetal block to swing inward, resulting in the inability to switch from low speed to high speed; if the torsion force of the torsion spring is set too small, it is easy for the centripetal block to fail to reset into place, resulting in the inability to switch gears, or the reset is slow, resulting in insensitive gear switching, etc. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems existing in the prior art and propose a transmission mechanism in an automatic transmission device to solve the problem of poor working stability.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The transmission mechanism in the automatic transmission device includes an output shaft, a low-speed input component arranged on the output shaft and capable of being engaged and disengaged therefrom, and a high-speed input component arranged on the output shaft, wherein two driving blocks are hingedly connected to the high-speed input component, and when the high-speed input component rotates, the two driving blocks can swing and drive the output shaft to rotate, and when the two driving blocks drive the output shaft to rotate, the low-speed input component is separated from the output shaft, and is characterized in that a linkage ring is also sleeved on the output shaft and the two are transmitted in one direction, and two reset components corresponding to the two driving blocks are also hingedly connected to the high-speed input component, and the linkage ring is located between the two reset components, and when the rotation speed of the high-speed input component is greater than that of the output shaft, the two reset components can push the linkage ring to rotate relative to the output shaft, and when the rotation speed of the output shaft is greater than that of the high-speed input component, the linkage ring can be driven to rotate to push the two reset components to swing, and both reset components are provided with an action part that can push the corresponding driving block to reset when they swing under the action of the linkage ring.

[0008] Similar to the background technology, when the vehicle is moving forward at a low speed, both the low-speed input component and the high-speed input component receive power to rotate at a low speed. At this time, the rotation speed of the high-speed input component is not enough to drive the output shaft to rotate through the two drive blocks, and the low-speed input component and the output shaft are combined to realize the transmission of power. However, due to the transmission ratio, the rotation speed of the high-speed input component is greater than that of the low-speed input component at this time, so the two reset components drive the linkage ring to rotate (the linkage ring and the output shaft slip); when the vehicle is moving forward at a high speed, both the low-speed input component and the high-speed input component receive power to rotate at a high speed. At this time, the rotation speed of the high-speed input component is faster and drives the output shaft to rotate through the two drive blocks, and the low-speed input component slips with the output shaft, and in this state, the rotation speed of the linkage ring and the output shaft are the same; when the vehicle is in neutral and only moves forward by inertia, the rotation speed of the low-speed input component and the high-speed input component is 0, and the output shaft is still rotating under the action of inertia. At this time, the output shaft rotates faster than the high-speed input component, and the output shaft drives the linkage ring to rotate and the linkage ring drives the two reset components to swing around their respective hinge points. In this process, the two reset components each use the action part to reset the corresponding drive block that has swung inward.

[0009] Through the above arrangement, the two drive blocks can complete the reset more stably, preventing the problem of gear switching failure caused by the drive blocks not being reset properly, thereby improving the working stability of the transmission mechanism; in addition, this can also enable the drive blocks to complete the reset work more quickly, thereby improving the sensitivity when switching gears.

[0010] In the transmission mechanism of the above-mentioned automatic transmission device, the side of the linkage ring has two protrusions, and the two reset members both have abutment parts. When the rotation speed of the high-speed input member is greater than the rotation speed of the output shaft, the abutment parts of the two reset members can respectively abut against the two protrusions and push the linkage ring to rotate. When the rotation speed of the output shaft is greater than the high-speed input member, the linkage ring can rotate until the protrusion abuts against the other abutment part and push the corresponding reset member to swing.

[0011] When the vehicle is moving forward at a low speed, the two reset members both abut against the side wall of the corresponding protruding part through the abutting part to generate a driving force on the linkage ring, so that the linkage ring rotates relative to the output shaft; when the vehicle is moving forward at a high speed, the output shaft drives the linkage ring to rotate, and at this time, the two protruding parts are separated from the abutting parts that they originally abutted against and approach the other abutting part, until the two protruding parts finally abut against the other abutting part, thereby generating a driving force on the reset member where the abutting part is located, so that the two reset members can swing around their respective hinge points and use the action part to push the corresponding driving block to reset, ensuring the stability during the subsequent gear switching. Through the above arrangement, the driving block can be reset quickly and stably, and at the same time, it is ensured that the arrangement of the reset member and the linkage ring will not interfere with the output shaft in a low-speed rotation state and affect normal operation.

[0012] In the transmission mechanism of the above-mentioned automatic transmission device, the end of the abutment portion has a pushing surface that can abut against one of the protrusions to push the linkage ring to rotate relative to the output shaft, and one side of the abutment portion has an abutment surface for the other protrusion to abut so that the linkage ring can push the reset member to swing.

[0013] When the speed of the high-speed input member is greater than that of the output shaft, the pushing surface at the end of the abutting portion abuts against the side of one of the protruding portions, so that the reset member can push the linkage ring to rotate during the rotation of the high-speed input member. When the speed of the output shaft is greater than that of the high-speed input member, the linkage ring is driven by the output shaft to rotate until the side of the other protruding portion abuts against the abutting surface on one side of the abutting portion, so that the reset member can be pushed to swing during the rotation of the linkage ring to use the action portion to push the driving block to reset.

[0014] In the transmission mechanism of the automatic transmission device, the high-speed input member is provided with two elastic members, and the two reset members can swing around the hinge point under the action of the corresponding elastic members to make the abutment part move inward.

[0015] By setting the elastic member, the two reset members can swing at the hinge point and make the abutting part move inward, so that the abutting part can smoothly come into contact with the protruding part, so that the two reset members can drive the linkage ring to rotate when the speed of the high-speed input member is greater than that of the output shaft, or the linkage ring can drive the two reset members to swing when the speed of the output shaft is greater than that of the high-speed input member to realize the reset of the drive block.

[0016] In the transmission mechanism of the automatic transmission device, the outer side of the driving block has a clearance recess, and when the driving block swings with the rotation of the high-speed input member, the action portion of the reset member is located in the clearance recess.

[0017] The action part is located outside the driving block, so a clearance recess is provided outside the driving block to avoid interference between the action part and the driving block when the driving block swings with the high-speed rotation of the high-speed input member, thereby ensuring the reliability of the structure.

[0018] In the transmission mechanism of the above-mentioned automatic transmission device, the driving block is in the shape of an arc block, one end of the driving block is a clamping portion, a clearance notch is provided on the lower side of the clamping portion, the reset member is in the shape of a sheet and is located at the clearance notch, the reset member has an extension portion extending outward from the outside of the driving block, the action portion is fixedly connected to the extension portion located on the outside of the driving block, and when the reset member swings under the action of the linkage ring, the action portion can abut against the outer side wall of the driving block and the abutting position of the two is located between the hinge point of the driving block and the other end of the driving block.

[0019] The reset member is in the form of a sheet and is located in the clearance notch at the lower side of the clamping portion. The action portion is fixedly connected to the extension portion of the reset member extending outward from the driving block, so that when the reset member swings, the action portion can just abut against the outer wall of the driving block. At the same time, by designing the abutting position of the two to be located between the hinge point of the driving block and the other end of the driving block, the direction of the force applied by the action portion to the driving block is just opposite to the swinging direction of the driving block, so that the reset member can push the driving block to reset to improve the working stability of the transmission mechanism.

[0020] In the transmission mechanism of the automatic transmission device described above, the action portion is in the shape of a strip and is fixedly connected to the upper side of the extension portion.

[0021] In the transmission mechanism of the automatic transmission device described above, as another technical solution, the action portion is a bent piece bent upward from the end of the extension portion.

[0022] In the transmission mechanism of the above-mentioned automatic transmission device, the high-speed input member includes a high-speed input gear and a chassis circumferentially fixed to the high-speed input gear. The two drive blocks and the two reset members are hinged on the chassis, and the reset members have the same hinge point as the corresponding drive blocks. Two magnetic blocks are also fixed on the chassis. When the output shaft speed is greater than the high-speed input member, the reset member can push the corresponding drive block to swing through the action part so that the other end of it is adsorbed on the magnetic block.

[0023] By arranging the reset member and the corresponding driving block to have the same hinge point, the structural arrangement can be made more reasonable and compact.

[0024] In the transmission mechanism of the above-mentioned automatic transmission device, a groove is provided on the inner side of the linkage ring, a mounting hole is provided on the side of the output shaft, a pin is provided in the mounting hole and a spring acts on the pin so that it can partially extend out of the mounting hole and insert into the groove, and the groove wall on one side of the groove transitions smoothly with the inner circumferential wall of the linkage ring. When the output shaft speed is greater than that of the high-speed input member, the linkage ring can be driven to rotate by the pin abutting against the groove wall on the other side of the groove.

[0025] Taking the initial state where the pin is inserted into the groove under the action of the spring as an example, when the speed of the high-speed input part is greater than that of the output shaft, the two reset parts generate thrust on the linkage ring. At this time, the groove wall on the side of the groove that is in a gentle transition with the inner circumferential wall of the linkage ring will move along the pin and retract the pin into the mounting hole, thereby causing the linkage ring to rotate relative to the output shaft. When the output shaft speed is greater than that of the high-speed input part, the output shaft abuts against the groove wall on the other side of the groove through the pin. In this state, the pin is not subjected to pressure and will not retract into the mounting hole, so that the output shaft can drive the linkage ring to rotate to drive the two reset parts to swing and push the two drive blocks to reset.

[0026] Compared with the prior art, the transmission mechanism of the automatic transmission device is provided with a linkage ring capable of unidirectional transmission outside the output shaft and two reset members corresponding to the two drive blocks are hinged on the high-speed input member. When the vehicle moves forward by inertia, the linkage ring drives the two reset members to swing and form a thrust on the two drive blocks, so that the two drive blocks can complete the reset more stably, avoiding the problem of gear switching failure caused by the drive blocks not being reset in place, and improving the working stability of the transmission mechanism; in addition, this can also enable the drive blocks to complete the reset work more quickly, improving the sensitivity when switching gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the first embodiment of the transmission mechanism in the automatic transmission device.

[0028] Figure 2 It is a cross-sectional view of the first embodiment of the transmission mechanism in the automatic transmission device.

[0029] Figure 3 It is a schematic diagram of the high-speed input component in the first embodiment.

[0030] Figure 4 It is a schematic diagram of the decomposition between the inner ring, the outer ring and the control disk in the first embodiment.

[0031] Figure 5 It is a schematic diagram of the decomposition between the two drive blocks and the control disk in the first embodiment.

[0032] Figure 6 This is another perspective exploded schematic diagram of the relationship between the two drive blocks and the control disk in the first embodiment.

[0033] Figure 7 It is a plan view of the high-speed input member (when the driving block is not swinging) and the linkage ring in the first embodiment.

[0034] Figure 8 It is a plan view of the high-speed input member (after the driving block swings with the rotation of the high-speed input member) and the linkage ring in the first embodiment.

[0035] Fig. 9 It is a plan view of the two reset parts and the linkage ring when the rotation speed of the high-speed input part is greater than the rotation speed of the output shaft in the first embodiment.

[0036] Fig.10 yes Fig. 9 Enlarged view of point A in the middle.

[0037] Fig.11 It is a plan view of the two reset parts and the linkage ring when the output shaft speed is greater than the high-speed input part speed in the first embodiment.

[0038] Fig.12 yes Fig.11Enlarged view of point B in the middle.

[0039] In the figure, 1, output shaft; 2, low-speed input assembly; 2a, low-speed input gear; 2b, inner ring; 2c, roller one; 3, high-speed input member; 3a, high-speed input gear; 3b, chassis; 3b1, coupling head; 4, driving block; 4a, clamping part; 4a1, clearance gap; 4b, clearance recess; 5, inner ring; 5a, movable groove; 6, outer ring; 6a, connecting piece; 7, control plate; 7a, extension head; 8, roller two; 9, magnetic block; 10, buffer; 11, linkage ring; 11a, protrusion; 11b, groove; 12, reset member; 12a, action part; 12b, abutment part; 12b1, pushing surface; 12b2, abutment surface; 12c, extension part; 13, pin; 14, spring; 15, elastic member; 16, articulated shaft. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0041] Embodiment 1

[0042] like Figure 1-Figure 6As shown, the transmission mechanism in the automatic transmission device includes an output shaft 1, a low-speed input assembly 2 arranged on the output shaft 1 and capable of being engaged with the output shaft 1, a high-speed input member 3 arranged on the output shaft 1, and a transmission assembly that is linked to the output shaft 1 in the circumferential direction and can be engaged with the high-speed input member 3. Among them, the low-speed input assembly 2 includes a low-speed input gear 2a, an inner ring 2b arranged inside the low-speed input gear 2a, and a roller 2c arranged between the inner ring 2b and the low-speed input gear 2a and capable of causing the two to be linked or slipped in the circumferential direction. The inner ring 2b is sleeved outside the output shaft 1 and the two are linked in the circumferential direction. Two driving blocks 4 are hinged on the high-speed input member 3. When the high-speed input member 3 rotates, the two driving blocks 4 can swing and drive the transmission assembly to rotate. The transmission assembly includes an inner ring 5 sleeved on the output shaft 1 and forming a linkage relationship with the output shaft 1, and an outer ring 6 axially fixed outside the inner ring 5. The output shaft 1 is also sleeved with a rotatable control disk 7. A plurality of rollers 8 controlled by the control disk 7 are arranged between the inner ring 5 and the outer ring 6. The outer side of the inner ring 5 has a plurality of movable grooves 5a, and each roller 8 is located in a corresponding movable groove 5a. When the control disk 7 rotates relative to the inner ring 5, it can drive the rollers 8 to move along the movable groove 5a so that the outer ring 6 and the inner ring 5 are linked or disengaged along the circumferential direction. The outer ring 6 is circumferentially fixed to the high-speed input member 3. The control disk 7 has a cylindrical extension head 7a at the center of the side facing away from the inner ring 5. Two magnetic blocks 9 are also fixed to the high-speed input member 3. The drive block 4 is arranged at intervals with the magnetic block 9. One end of each drive block 4 is respectively adsorbed on the corresponding magnetic block 9. The two drive blocks 4 are arranged outside the extension head 7a of the control disk 7. The driving block 4 is in an arc-shaped block shape, one end of the driving block 4 is a clamping portion 4a, the hinge point between the driving block 4 and the high-speed input member 3 is located near the clamping portion 4a, and the other end of the driving block 4 cooperates with the magnetic block 9. The length from one end of the driving block 4 that cooperates with the magnetic block 9 to the hinge point between the driving block 4 and the high-speed input member 3 is greater than the length from the hinge point between the driving block 4 and the high-speed input member 3 to the end of the clamping portion 4a. The specific structure of the transmission assembly can refer to the speed change mechanism of the speed change transmission with patent application number 202011297355.3 filed by the applicant. A buffer 10 is also circumferentially fixed on the output shaft 1, and the inner ring 2b and the inner ring 5 are respectively located on both sides of the housing of the buffer 10 and both are circumferentially fixed to the housing of the buffer 10 in a concave-convex manner. Specifically, the high-speed input member 3 includes a high-speed input gear 3a and a chassis 3b circumferentially fixed to the high-speed input gear 3a. Two drive blocks 4 and two magnetic blocks 9 are arranged on the chassis 3b. The edge of the chassis 3b has a notch. The outer ring 6 has a connecting piece inserted into the notch to form a circumferentially fixed connection between the chassis 3b and the outer ring 6. The chassis 3b has a connecting head 3b1 extending from the center thereof. The end of the connecting head 3b1 has a plurality of slots. One side of the high-speed input gear 3a has a plurality of plug-in blocks inserted into the slots.

[0043] How the two drive blocks 4 drive the transmission assembly to rotate is explained as follows: Since the two drive blocks 4 are located on the high-speed input member 3, when the high-speed input member 3 rotates at high speed, the two drive blocks will be affected by the centrifugal force and will have a tendency to move outside the high-speed input member 3. However, since the length from the other end of the drive block 4 to the hinge point between the drive block 4 and the high-speed input member 3 is greater than the length from the hinge point between the drive block 4 and the high-speed input member 4 to the end of the clamping portion 4a (long length means heavier weight), the drive block 4 will be in a state where the end that cooperates with the magnetic block 9 is thrown outward and the clamping portion 4a moves inward, so that the clamping portions 4a of the two drive blocks 4 will contact the outer side wall of the extension head 7a of the control disk 7 at the same time, and in the subsequent high-speed rotation of the high-speed input member 3, the clamping portions 4a of the two drive blocks 4 will always maintain this state and drive the control disk 7 to rotate by friction.

[0044] like Figure 2 and Figure 7 As shown, a linkage ring 11 is also sleeved on the output shaft 1 and the two are unidirectionally transmitted. Two reset members 12 corresponding to the two drive blocks 4 are also hinged on the chassis 3b of the high-speed input member 3. The linkage ring 11 is located between the two reset members 12. When the rotation speed of the high-speed input member 3 is greater than that of the output shaft 1, the two reset members 12 can push the linkage ring 11 to rotate relative to the output shaft 1. When the rotation speed of the output shaft 1 is greater than that of the high-speed input member 3, the linkage ring 11 can be driven to rotate to push the two reset members 12 to swing around their respective hinge points. Both reset members 12 are provided with an action portion 12a that can push the corresponding drive block 4 to reset when it swings under the action of the linkage ring 11. A groove 11b is provided on the inner side of the linkage ring 11, and a mounting hole is provided on the side of the output shaft 1. A pin 13 is provided in the mounting hole, and a spring 14 acts on the pin 13 so that the pin 13 can partially extend out of the mounting hole and be inserted into the groove 11b. The groove wall on one side of the groove 11b transitions smoothly with the inner circumferential wall of the linkage ring 11. When the rotation speed of the output shaft 1 is greater than that of the high-speed input member 3, the linkage ring 11 can be driven to rotate by the pin 13 abutting against the groove wall on the other side of the groove 11b.

[0045] like Figure 7-Figure 12As shown, the side of the linkage ring 11 has two protruding parts 11a, and the two reset members 12 each have two abutting parts 12b. When the speed of the high-speed input member 3 is greater than the speed of the output shaft 1, the abutting parts 12b of the two reset members 12 can respectively abut against the two protruding parts 11a and push the linkage ring 11 to rotate. When the speed of the output shaft 1 is greater than the speed of the high-speed input member 3, the linkage ring 11 can rotate until the protruding part 11a abuts against the other abutting part 12b and push the corresponding reset member 12 to swing. Two elastic members 15 are provided on the high-speed input member 3. Under the action of the corresponding elastic members 15, the two reset members 12 can swing around the hinge point to make the abutting part 12b move inward. The elastic member 15 is specifically a torsion spring. Specifically, the end of the abutment portion 12b has a pushing surface 12b1 that can abut against one of the protrusions 11a to push the linkage ring 11 to rotate relative to the output shaft 1, and one side of the abutment portion 12b has an abutment surface 12b2 for the other protrusion 11a to abut so that the linkage ring 11 can push the reset member 12 to swing.

[0046] like Figure 3 and Figure 7 As shown, a clearance notch 4a1 is provided at the lower side of the clamping portion 4a, and the reset member 12 is in the shape of a sheet and is located at the clearance notch 4a1. The reset member 12 and the corresponding driving block 4 have the same hinge point, that is, the reset member 12 and the corresponding driving block 4 are hinged to the high-speed input member 3 through the same hinge shaft 16. The reset member 12 has an extension portion 12c extending outward from the driving block 4, and the action portion 12a is fixedly connected to the extension portion 12c located on the outer side of the driving block 4. When the reset member 12 swings under the action of the linkage ring 11, the action portion 12a can abut against the outer side wall of the driving block 4 and the abutting position of the two is located between the hinge point of the driving block 4 and the other end of the driving block 4. In this embodiment, the action portion 12a is in the shape of a strip and is fixedly connected to the upper side of the extension portion 12c. The driving block 4 has a clearance notch 4b on the outer side. When the driving block 4 swings with the rotation of the high-speed input member 3, the action portion 12a of the reset member 12 is located in the clearance notch 4b.

[0047] The automatic transmission device also includes a transmission shaft (not shown in the figure) for receiving motor power, and the transmission shaft has an output gear 1 meshing with the low-speed input gear 2a and an output gear 2 meshing with the high-speed input gear 3a. The transmission ratio of the output gear 1 to the low-speed input gear 2a is 2-2.5 times the transmission ratio of the output gear 2 to the high-speed input gear 3a.

[0048] like Figure 7 , Fig. 9 and Fig.10As shown, when the vehicle needs to move forward at a low speed, the motor outputs a relatively low speed and transmits it to the transmission shaft to make it rotate at a low speed. The transmission shaft drives the low-speed input gear 2a to rotate through the output gear 1 and drives the high-speed input gear 3a to rotate through the output gear 2 (the rotation direction is clockwise in the figure). Although the rotation speed of the high-speed input gear 3a is greater than that of the low-speed input gear 2a due to the transmission ratio, the rotation speed of the high-speed input gear 3a is not enough to make the driving block 4 overcome the magnetic force of the magnetic block 9 and swing inward because the motor output speed is relatively low. At this time, the power is transmitted from the low-speed input gear 2a to the inner ring 2b through the roller 1 2c, and then transmitted from the inner ring 2b to the output shaft 1 to make it rotate. In this state, since the rotation speed of the high-speed input gear 3a is greater than that of the output shaft 1, the two reset members 12 hinged on the chassis 3b will use the pushing surfaces 12b1 at the ends of their respective abutting portions 12b to apply a force on the protruding portion 11a on the outer side of the linkage ring 11, thereby pushing the linkage ring 11 to rotate relative to the output shaft 1.

[0049] like Figure 8 , Fig.11 and Fig.12 As shown, when the vehicle needs to move forward at high speed, the motor output speed increases and is transmitted to the transmission to make it rotate at high speed. The speed of the high-speed input gear 3a is greater than that of the low-speed input gear 2a and rotates at a higher speed. The two drive blocks 4 overcome the magnetic force of the magnetic block 9 and swing around their respective hinge points, so that the clamping parts 4a of the two drive blocks 4 are clamped on the outside of the extension head 7a of the control disk 7 and drive the control disk 7 to rotate. In this way, the control disk 7 will control the roller 2 8 to move along the movable groove 5a to make the outer ring 6 and the inner ring 5 move in a circumferential direction. The outer ring 6 thus drives the inner ring 5 to rotate at high speed, and finally transmits the power to the output shaft 1 through the inner ring 5 to make it rotate at high speed. In this state, the low-speed input component 2 and the output shaft 1 slip, and the linkage ring 11 and the output shaft 1 have the same speed.

[0050] When the vehicle is in neutral and only moves forward by inertia, the speeds of the low-speed input gear 2a and the high-speed input gear 3a are both 0, while the output shaft 1 is still rotating under the action of inertia. At this time, the speed of the output shaft 1 is greater than that of the high-speed input gear 3a, and the output shaft 1 and the linkage ring 11 form a linkage along the circumferential direction, that is, the output shaft 1 drives the linkage ring 11 to rotate. At this time, the two protrusions 11a are separated from the abutting portions 12b that were originally abutted and approach the other abutting portion 12b, until the two protrusions 11a finally abut against the abutting surface 12b2 on the side of the other abutting portion 12b, thereby generating a driving force for the reset member 12 where the abutting portion 12b is located, so that the two reset members 12 can swing around their respective hinge points and use the action portion 12a to push the corresponding drive block 4 to reset.

[0051] The transmission mechanism of the automatic transmission device utilizes the arrangement of the linkage ring 11 and the two reset members 12. When the vehicle is moving forward only by inertia, the linkage ring 11 drives the two reset members 12 to swing and form a thrust on the two drive blocks 4, so that the two drive blocks 4 can complete the reset more stably, preventing the problem of the gear being unable to switch due to the drive blocks 4 not being reset in place, thereby improving the working stability of the transmission mechanism; in addition, this can also enable the drive blocks 4 to complete the reset work more quickly, thereby improving the sensitivity when switching gears.

[0052] Embodiment 2

[0053] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the action portion 12a is a bent piece bent upward from the end of the extension portion 12c.

[0054] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A transmission mechanism in an automatic transmission device, comprising an output shaft (1), a low-speed input component (2) arranged on the output shaft (1) and capable of being engaged with the output shaft, and a high-speed input component (3) arranged on the output shaft (1), wherein two driving blocks (4) are hingedly connected to the high-speed input component (3), and when the high-speed input component (3) rotates, the two driving blocks (4) can swing and drive the output shaft (1) to rotate; and when the two driving blocks (4) drive the output shaft (1) to rotate, the low-speed input component (2) is separated from the output shaft (1), characterized in that: The output shaft (1) is also sleeved with a linkage ring (11) and the two are unidirectionally transmitted. The high-speed input member (3) is also hinged with two reset members (12) corresponding to the two drive blocks (4). The linkage ring (11) is located between the two reset members (12). When the rotation speed of the high-speed input member (3) is greater than that of the output shaft (1), the two reset members (12) can push the linkage ring (11) to rotate relative to the output shaft (1). When the rotation speed of the output shaft (1) is greater than that of the high-speed input member (3), the linkage ring (11) can be driven to rotate to push the two reset members (12) to swing. The two reset members (12) are each provided with an action portion (12a) that can push the corresponding drive block (4) to reset when they swing under the action of the linkage ring (11). The side of the linkage ring (11) has two protruding portions (11a). The two reset members (12) each have abutting portions (12b). When the rotation speed of the high-speed input member (3) is greater than that of the output shaft (1), the two reset members (12) are The abutting portion (12b) of the reset member (12) can respectively abut against the two protruding portions (11a) and push the linkage ring (11) to rotate. When the rotation speed of the output shaft (1) is greater than that of the high-speed input member (3), the linkage ring (11) can rotate until the protruding portion (11a) abuts against the other abutting portion (12b) and pushes the corresponding reset member (12) to swing. The end of the abutting portion (12b) has a protruding portion that can abut against one of the protruding portions (11a) to push the linkage ring (11). The movable ring (11) has a pushing surface (12b1) that rotates relative to the output shaft (1), and one side of the abutting portion (12b) has an abutting surface (12b2) for abutting against another protruding portion (11a) so that the linkage ring (11) can push the reset member (12) to swing. The high-speed input member (3) is provided with two elastic members (15). Under the action of the corresponding elastic members (15), the two reset members (12) can swing around the hinge point so that the abutting portion (12b) moves inward.

2. The transmission mechanism in the automatic transmission device according to claim 1, characterized in that: The outer side of the driving block (4) is provided with a clearance recess (4b), and when the driving block (4) swings along with the rotation of the high-speed input member (3), the action portion (12a) of the reset member (12) is located in the clearance recess (4b).

3. The transmission mechanism in the automatic transmission device according to claim 2, characterized in that: The driving block (4) is in an arc-shaped block shape, one end of the driving block (4) is a clamping portion (4a), a clearance notch (4a1) is provided on the lower side of the clamping portion (4a), the reset member (12) is in a sheet shape and is located at the clearance notch (4a1), the reset member (12) has an extension portion (12c) extending outward from the driving block (4), the action portion (12a) is fixedly connected to the extension portion (12c) located on the outer side of the driving block (4), and when the reset member (12) swings under the action of the linkage ring (11), the action portion (12a) can abut against the outer side wall of the driving block (4), and the abutting position of the two is located between the hinge point of the driving block (4) and the other end of the driving block (4).

4. The transmission mechanism in the automatic transmission device according to claim 3, characterized in that: The action portion (12a) is strip-shaped and is fixedly connected to the upper side of the extension portion (12c).

5. The transmission mechanism in the automatic transmission device according to claim 3, characterized in that: The action portion (12a) is a bent piece bent upward from the end of the extension portion (12c).

6. The transmission mechanism in the automatic transmission device according to claim 3, characterized in that: The high-speed input member (3) comprises a high-speed input gear (3a) and a chassis (3b) circumferentially fixed to the high-speed input gear (3a); two drive blocks (4) and two reset members (12) are hinged on the chassis (3b); the reset members (12) and the corresponding drive blocks (4) have the same hinge point; two magnetic blocks (9) are also fixed on the chassis (3b); when the output shaft (1) rotates at a speed greater than that of the high-speed input member (3), the reset member (12) can push the corresponding drive block (4) to swing through the action portion (12a) so that the other end of the drive block (4) is adsorbed on the magnetic block (9).

7. The transmission mechanism in the automatic transmission device according to claim 1, characterized in that: The linkage ring (11) is provided with a groove (11b) on the inner side, and a mounting hole is provided on the side of the output shaft (1). A pin (13) is provided in the mounting hole, and a spring (14) acts on the pin (13) so that the pin (13) can be partially extended out of the mounting hole and inserted into the groove (11b). The groove wall on one side of the groove (11b) smoothly transitions with the inner circumferential wall of the linkage ring (11). When the rotation speed of the output shaft (1) is greater than that of the high-speed input member (3), the linkage ring (11) can be driven to rotate by the pin (13) abutting against the groove wall on the other side of the groove (11b).

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