Variable eccentric gear, clutch device with variable eccentric gear and transmission

Abstract

The invention discloses a variable eccentric gear, a novel clutch device with the variable eccentric gear and a transmission, the biggest difference between the novel clutch device and the prior art is that the novel clutch device adopts a normally engaged gear structure, and the novel clutch device can be used on the transmission to form the transmission with a brand new technical route.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a variable eccentric gear and a clutch device and a transmission with the variable eccentric gear. Background Art

[0002] Gears are mechanical parts with teeth that can mesh with each other. They are widely used in mechanical transmission and the entire mechanical field. However, the research on gears in the industry is all focused on improving the bearing capacity and transmission stability of gears, and there is less research on the structural innovation of gears. Summary of the invention

[0003] The purpose of the present invention is to provide a gear with a completely new structure - a variable eccentric gear, and based on the variable eccentric gear, the present invention also provides a new clutch device and a transmission.

[0004] The variable eccentric gear provided by the present invention comprises an inner wheel (1), an outer wheel (2), a spring (3), a locking pin (4) and a shift fork (5); the outer wheel (2) is mounted on the inner wheel (1) and rotates synchronously with the inner wheel (1), and the outer wheel (2) can be displaced a small distance in a radial direction of the inner wheel (1); the spring (3) is mounted between the inner wheel (1) and the outer wheel (2) and is used to limit the initial position and reset of the variable eccentric gear; the locking pin (4) is mounted on the inner wheel (1) and rotates synchronously with the inner wheel (1), and the locking pin (4) can slide axially on the inner wheel (1) to control the working state of the variable eccentric gear; and the shift fork (5) is used to control the axial position of the locking pin (4).

[0005] Preferably, when the shift fork (5) pushes the locking pin (4) to slide axially and insert between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in an eccentric state; when the shift fork (5) pushes the locking pin (4) to slide axially out from between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in a normal state.

[0006] Preferably, when the shift fork (5) pushes the locking pin (4) to slide axially and insert between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in a normal state; when the shift fork (5) pushes the locking pin (4) to slide axially out from between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in an eccentric state.

[0007] The present invention also provides a clutch device, which includes a central gear and a planetary carrier with at least one planetary gear. Among all the gears, at least one gear is a variable eccentric gear. The central gear and the planetary carrier are respectively the active component and the passive component of the one-way clutch. When the variable eccentric gear is controlled to work in the ordinary gear state, the central gear and the planetary carrier do not affect each other, and the clutch device is separated; when the variable eccentric gear is controlled to work in the eccentric gear state, the central gear and the planetary carrier are locked into a whole and rotate synchronously, and the clutch device is engaged.

[0008] Preferably, the central gear is a sun gear, and the sun gear is a variable eccentric gear; Preferably, the central gear is a sun gear, and at least one of the planetary gears is a variable eccentric gear; Preferably, the central gear is a ring gear, and at least one of the planetary gears is a variable eccentric gear.

[0009] The present invention also provides a transmission, which includes an input main shaft, a plurality of driving gears fixedly mounted on the input main shaft and rotating synchronously with the input main shaft, a plurality of passive gears correspondingly meshing with the driving gears, each passive gear correspondingly mounted with the above-mentioned clutch device, the driving component of each clutch device is fixedly connected with its corresponding passive gear, and the passive components of all clutch devices are connected into a whole to constitute the output of the transmission. When shifting gears, it is only necessary to control the clutch device on the target gear position to engage it, and the clutch devices on the other gear positions to disengage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the variable eccentric gear of the present invention.

[0011] Figure 2 It is an exploded view of the variable eccentric gear of the present invention.

[0012] Figure 3 Schematic diagram of the locking pin inserted between the inner wheel and the outer wheel.

[0013] Figure 4 This is a schematic diagram of the variable eccentric gear of the present invention working in a normal gear state.

[0014] Figure 5 Schematic diagram of the locking pin sliding out between the inner wheel and the outer wheel.

[0015] Figure 6 It is a schematic diagram of the variable eccentric gear of the present invention working in the eccentric gear state.

[0016] Figure 7 It is another variable eccentric gear of the present invention.

[0017] Figure 8 The invention relates to a clutch device.

[0018] Fig. 9 It is an exploded view of the clutch device of the present invention.

[0019] Fig.10 It is a schematic diagram of the clutch device of the present invention working in a disengaged state.

[0020] Fig.11 It is a schematic diagram of the clutch device of the present invention working in the engaged state.

[0021] Fig.12 This is the second clutch device provided by the present invention.

[0022] Fig.13 This is an exploded view of the second clutch device provided by the present invention.

[0023] Fig.14 It is a schematic diagram of the second clutch device of the present invention working in a disengaged state.

[0024] Fig.15 It is a schematic diagram of the second clutch device of the present invention working in the engaged state.

[0025] Fig.16 This is a third clutch device provided by the present invention.

[0026] Fig.17 This is an exploded view of a third clutch device provided by the present invention.

[0027] Fig.18 It is a schematic diagram of the third clutch device of the present invention working in a disengaged state.

[0028] Fig.19 It is a schematic diagram of the third clutch device of the present invention working in the engaged state.

[0029] Fig. 20 The invention relates to a two-speed transmission.

[0030] Fig.21 It is an exploded view of the two-speed transmission of the present invention.

[0031] Fig. 22 It is a three-speed transmission of the present invention.

[0032] Fig.23 It is a three-speed transmission of the present invention.

[0033] Fig.24 It is an exploded view of the three-speed transmission of the present invention.

[0034] Fig.25 It is an exploded view of the three-speed transmission of the present invention.

[0035] Fig.26It is the output end of the three-speed transmission of the present invention.

[0036] Figure serial number: 1-inner wheel; 2-outer wheel; 3-spring; 4-locking pin; 5-shift fork; 6-gear; 7-planet carrier; 8-gear ring; 9-planet carrier II; 10-first gear driving gear; 11-second gear driving gear; 12-input main shaft; 13-first gear passive gear; 14-second gear passive gear; 15-locking pin II; 16-shift fork; 17-output shaft; 18-first gear driving gear II; 19-second gear driving gear II; 20-third gear driving gear II; 21-input main shaft II; 22-first gear passive gear II; 23-second gear passive gear II; 2 4-third gear driven gear II; 25-planet carrier connecting rod; A7-planet carrier of clutch device A; B7-planet carrier of clutch device B; C1-inner wheel of variable eccentric gear on clutch device C; D1-inner wheel of variable eccentric gear on clutch device D; E1-inner wheel of variable eccentric gear on clutch device E; C5-shift fork of clutch device C; D5-shift fork of clutch device D; E5-shift fork of clutch device E; C9-planet carrier of clutch device C; D9-planet carrier of clutch device D; E9-planet carrier of clutch device E DETAILED DESCRIPTION

[0037] Embodiment 1, as Figure 1 The variable eccentric gear provided in this embodiment is shown, which includes an inner wheel 1, an outer wheel 2, a spring 3, a locking pin 4, and a shift fork 5. Figure 2 The exploded view is shown. The square part in the middle of the inner wheel 1 is installed in the opening of the outer wheel 2, the left and right outer walls of the square part of the inner wheel 1 fit with the left and right inner walls of the outer wheel 2, a spring 3 is installed between the upper outer wall of the square part of the inner wheel 1 and the upper inner wall of the outer wheel 2, a locking pin 4 is installed between the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2, the locking pin 4 rotates synchronously with the inner wheel 1 and can slide axially on the inner wheel 1, and the shift fork 5 is used to control the axial position of the locking pin 4 on the inner wheel 1.

[0038] like Figure 3 As shown, in the initial state, due to the force of the spring 3, the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2 fit together, and the variable eccentric gear works in Figure 4 The ordinary gear mode shown in the figure (the dotted line indicates the addendum circle in the ordinary mode), at this time, the variable eccentric gear is equivalent to an ordinary gear; when the shift fork 5 pushes the locking pin 4 to slide to the left, the locking pin 4 is inserted between the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2, so that the outer wheel 2 moves upward relative to the inner wheel 1, as shown in FIG. Figure 5 As shown, the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2 are separated, and the variable eccentric gear works at Figure 6The eccentric gear mode is shown (the dotted line indicates the top circle of the tooth in the normal mode); when the variable eccentric gear needs to be switched back to the normal gear mode, the shift fork 5 pushes the locking pin 4 to slide rightward out from between the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2. Under the action of the spring 3, the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2 fit together, and the variable eccentric gear returns to the normal gear mode.

[0039] like Figure 7 As shown, the variable eccentric gear of this embodiment can also be designed so that its initial working state is the eccentric gear mode, when the locking pin 4 is inserted between the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2, its working state is the ordinary gear mode, and when the locking pin 4 slides out from between the lower outer wall of the square part of the inner wheel 1 and the lower inner wall of the outer wheel 2, its working state is restored to the eccentric gear mode.

[0040] Embodiment 2, as Figure 8 FIG. 1 is a clutch device provided in this embodiment. Fig. 9 For its exploded view, it includes a Figure 1 The variable eccentric gear, gear 6, and planet carrier 7 are shown. The variable eccentric gear is a sun gear, which is a central gear. Its inner wheel 1 is freely rotatably mounted at the center of the planet carrier 7. The gear 6, as a planetary gear of the planet carrier 7, is freely rotatably mounted on the planet carrier 7 and meshes with the outer wheel 2 of the variable eccentric gear. The variable eccentric gear and the planet carrier 7 are the active end and the passive end of the clutch device respectively.

[0041] like Fig.10 As shown in the figure (the dotted line in the figure indicates the addendum circle of the variable eccentric gear working in the normal mode), the control fork 5 makes the variable eccentric gear work in the normal gear mode, the variable eccentric gear drives the gear 6 to idle, the variable eccentric gear and the planet carrier 7 do not affect each other, and the active end and the passive end of the clutch device are equivalent to separation; Fig.11 As shown in the figure (the dotted line in the figure indicates the addendum circle of the variable eccentric gear working in the normal mode), the control fork 5 makes the variable eccentric gear work in the eccentric gear mode, and the variable eccentric gear cannot drive the gear 6 to rotate continuously. When the meshing clearance between the variable eccentric gear and the gear 6 is 0, the gear 6 is stuck and cannot rotate. After the gear 6 is stuck, the whole system is locked and rotates synchronously as a whole, and the active end and the passive end of the clutch device are equivalent to being combined. In this embodiment, the shift fork 5 controls the working mode of the variable eccentric gear to control the separation and combination of the clutch device to realize the clutch function.

[0042] Embodiment three, as Fig.12 Another clutch device provided by this embodiment is shown. Fig.13As an exploded view, it is based on the second embodiment, with the positions of the sun gear and the planetary gears swapped, that is, gear 6 is used as the sun gear of the clutch device, gear 6 is also the center gear of the clutch device, the variable eccentric gear is used as the planetary gear of the clutch device, and gear 6 and planet carrier 7 are the active end and the passive end of the clutch device respectively.

[0043] like Fig.14 As shown in the figure (the dotted line in the figure indicates the addendum circle of the variable eccentric gear working in the normal gear mode), the control fork 5 makes the variable eccentric gear work in the normal gear mode, the gear 6 drives the variable eccentric gear to idle, the gear 6 and the planet carrier 7 do not affect each other, and the active end and the passive end of the clutch device are equivalent to separation; Fig.15 As shown (the dotted line in the figure indicates the tooth top circle of the variable eccentric gear working in the normal mode), the control fork 5 makes the variable eccentric gear work in the eccentric gear mode, and the gear 6 cannot drive the variable eccentric gear to rotate continuously. When the meshing clearance between the variable eccentric gear and the gear 6 is 0, the variable eccentric gear is stuck and cannot rotate. After the variable eccentric gear is stuck, the whole system is locked and rotates synchronously as a whole. The active end and the passive end of the clutch device are equivalent to being combined.

[0044] Embodiment 4, as Fig.16 The third clutch device provided in this embodiment is shown. Fig.17 For its exploded view, it includes a Figure 1 The variable eccentric gear, ring gear 8, and planet carrier II 9 are shown. The variable eccentric gear is a planetary gear, and its inner wheel 1 can be freely rotatably mounted on the planet carrier II 9, and its outer wheel 2 is meshed with the ring gear 8. The ring gear 8 is the central gear of the clutch device, and the ring gear 8 and the planet carrier II 9 are the active end and the passive end of the clutch device respectively.

[0045] like Fig.18 As shown in the figure (the dotted line in the figure indicates the addendum circle of the variable eccentric gear working in the normal gear mode), the control fork 5 makes the variable eccentric gear work in the normal gear mode, the ring gear 8 drives the variable eccentric gear to idle, the ring gear 8 and the planet carrier II 9 do not affect each other, and the active end and the passive end of the clutch device are equivalent to separation; Fig.19 As shown (the dotted line in the figure indicates the top circle of the variable eccentric gear working in the normal mode), the control fork 5 makes the variable eccentric gear work in the eccentric gear mode, and the ring gear 8 cannot drive the variable eccentric gear to rotate continuously. When the meshing clearance between the variable eccentric gear and the ring gear 8 is 0, the variable eccentric gear is stuck and cannot rotate. After the variable eccentric gear is stuck, the entire system is locked and rotates synchronously as a whole, and the active end and the passive end of the clutch device are equivalent to being combined.

[0046] Embodiment 5, as Fig. 20 The two-speed transmission provided in this embodiment is shown. Fig.21In its exploded view, it includes a first gear driving gear 10, a second gear driving gear 11, an input main shaft 12, a first gear driven gear 13, a second gear driven gear 14, a shift fork 16, and two clutch devices A and B of the same specification provided in the second embodiment. The first gear driving gear 10 and the second gear driving gear 11 are both fixedly mounted on the input main shaft 12 and rotate synchronously therewith, the first gear driving gear 10 is meshed with the first gear driven gear 13, the second gear driving gear 11 is meshed with the second gear driven gear 14, the planet carrier A7 of the clutch device A is fixedly connected with the first gear driven gear 13, the planet carrier B7 of the clutch device B is fixedly connected with the second gear driven gear 14, the locking latch of the clutch device A and the locking latch of the clutch device B are fixedly connected to form a locking latch II 15, the inner wheel of the variable eccentric gear on the clutch device A and the inner wheel of the variable eccentric gear on the clutch device B are fixedly connected to form an output shaft 17 of the two-speed transmission, and the shift fork 16 is used to control the axial position of the locking latch II 15 on the output shaft 17.

[0047] When the two-speed transmission of the present embodiment is working, the shift fork 16 is controlled to push the locking pin II 15 to slide to the left, so that the clutch device A is engaged and the clutch device B is disengaged. The two-speed transmission works in the first gear, and the two-speed transmission transmits torque through the input main shaft 12, the first gear driving gear 10, the first gear driven gear 13, the clutch device A, and the output shaft 17; when the two-speed transmission needs to be switched to the second gear, the shift fork 16 is controlled to push the locking pin II 15 to slide to the right, so that the clutch device A is disengaged and the clutch device B is engaged. The two-speed transmission works in the second gear. At this time, the two-speed transmission transmits torque through the input main shaft 12, the second gear driving gear 11, the second gear driven gear 14, the clutch device B, and the output shaft 17.

[0048] Embodiment six, as Fig. 22 , Fig.23 The three-speed transmission provided in this embodiment is shown. Fig.24 , Fig.25In its exploded view, it includes a first gear driving gear II 18, a second gear driving gear II 19, a third gear driving gear II 20, an input main shaft II 21, a first gear passive gear II 22, a second gear passive gear II 23, a third gear passive gear II 24, and three clutch devices C, clutch device D, and clutch device E of the same specifications provided in the fourth embodiment. Among them, the first gear driving gear Ⅱ18, the second gear driving gear Ⅱ19, and the third gear driving gear Ⅱ20 are all fixedly installed on the input main shaft Ⅱ21 and rotate synchronously with the main shaft Ⅱ21, the first gear main shaft gear Ⅱ18 is meshed with the first gear driven gear Ⅱ22, the second gear driving gear Ⅱ19 is meshed with the second gear driven gear Ⅱ23, the third gear driving gear Ⅱ20 is meshed with the third gear driven gear Ⅱ24, the ring gear of the clutch device C is fixedly connected to the first gear driven gear Ⅱ22, the ring gear of the clutch device D is fixedly connected to the second gear driven gear Ⅱ23, the ring gear of the clutch device E is fixedly connected to the third gear driven gear Ⅱ24, and the planet carrier C9 of the clutch device C, the planet carrier D9 of the clutch device D, and the planet carrier E9 of the clutch device E are fixedly connected by the planet carrier connecting rod 25 to form a whole as shown in the figure. Fig.26 The output of the three-speed transmission is shown.

[0049] When the three-speed transmission provided in this embodiment is working, it is only necessary to control the corresponding shift forks C5, D5, and E5 on the clutch device C, the clutch device D, and the clutch device E to change the working state of each clutch device to switch gears. For example, when the three-speed transmission is in neutral, the shift forks C5, D5, and E5 are not in action, and the clutch device C, the clutch device D, and the clutch device E are all in a disconnected state; when the three-speed transmission needs to be switched to the first gear, the shift fork C5 is controlled to slide to the left to engage the clutch device C, and the shift fork D5 and the shift fork E5 are not in action. The three-speed transmission transmits torque through the input main shaft II 21, the first gear main shaft gear II 18, the first gear driven gear II 22, and the clutch device C. Torque; when the third-speed transmission needs to be switched to the second gear, the shift fork C5 is controlled to slide to the right to disconnect the clutch device C, and the shift fork D5 is controlled to slide to the left to engage the clutch device D, and the shift fork E5 does not move. The third-speed transmission transmits torque through the input main shaft Ⅱ21, the second-gear main shaft gear Ⅱ19, the second-gear driven gear Ⅱ23, and the clutch device D; when the third-gear transmission needs to be switched to the third gear, the shift fork C5 does not move, the shift fork D5 is controlled to slide to the right to disconnect the clutch device D, and the shift fork E5 is controlled to slide to the left to engage the clutch device E, and the third-speed transmission transmits torque through the input main shaft Ⅱ21, the third-gear main shaft gear Ⅱ20, the third-gear driven gear Ⅱ24, and the clutch device E.

Claims

1. A variable eccentric gear, characterized in that : It comprises an inner wheel (1), an outer wheel (2), a spring (3), a locking pin (4) and a shift fork (5); the outer wheel (2) is mounted on the inner wheel (1) and rotates synchronously with the inner wheel (1), and the outer wheel (2) can be displaced by a small distance in a radial direction of the inner wheel (1); the spring (3) is mounted between the inner wheel (1) and the outer wheel (2) and is used to limit the initial position and reset of the variable eccentric gear; the locking pin (4) is mounted on the inner wheel (1) and rotates synchronously with the inner wheel (1), and the locking pin (4) can slide axially on the inner wheel (1) to change the working state of the variable eccentric gear; the shift fork (5) is used to control the axial position of the locking pin (4).

2. The variable eccentric gear according to claim 1, wherein: When the shift fork (5) pushes the locking pin (4) to slide axially and insert between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in an eccentric state; when the shift fork (5) pushes the locking pin (4) to slide axially out from between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in a normal state.

3. The variable eccentric gear according to claim 1, wherein: When the shift fork (5) pushes the locking pin (4) to slide axially and insert between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in a normal state; when the shift fork (5) pushes the locking pin (4) to slide axially out from between the inner wheel (1) and the outer wheel (2), the variable eccentric gear operates in an eccentric state.

4. A clutch device, characterized in that: It includes a central gear and a planetary carrier with at least one planetary gear. Among all the gears, at least one gear is the variable eccentric gear described in claim 1. The central gear and the planetary carrier are respectively the active component and the passive component of the clutch device. When the variable eccentric gear is controlled to work in a normal state, the active component and the passive component of the clutch device do not affect each other, and the clutch device is separated. When the variable eccentric gear is controlled to work in an eccentric state, the active component and the passive component of the clutch device are locked and rotate synchronously, and the clutch device is engaged.

5. The clutch device according to claim 4, characterized in that: The central gear is a sun gear, and the sun gear is the variable eccentric gear according to claim 1.

6. The clutch device according to claim 4, wherein: The central gear is a sun gear, and at least one of the planetary gears is the variable eccentric gear according to claim 1.

7. The clutch device according to claim 4, wherein: The central gear is a ring gear, and at least one of the planetary gears is the variable eccentric gear according to claim 1.

8. A transmission, characterized in that: It includes an input main shaft, a plurality of driving gears fixedly mounted on the input main shaft and rotating synchronously with the input main shaft, a plurality of driven gears correspondingly meshing with the driving gears, each driven gear being correspondingly mounted with the clutch device according to claim 4, the driving component of each clutch device being fixedly connected to its corresponding driven gear, and the passive components of all the clutch devices being connected into a whole to constitute the output of the transmission.

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