CN217177295U - Speed change mechanism of gearbox, gearbox and model car - Google Patents
Speed change mechanism of gearbox, gearbox and model car Download PDFInfo
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- CN217177295U CN217177295U CN202220103382.0U CN202220103382U CN217177295U CN 217177295 U CN217177295 U CN 217177295U CN 202220103382 U CN202220103382 U CN 202220103382U CN 217177295 U CN217177295 U CN 217177295U
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Abstract
The utility model discloses a speed change mechanism of a gearbox, the gearbox and a model car, wherein the speed change mechanism of the gearbox comprises an installation shell, a power output shaft and a transmission shaft; the power output shaft is sleeved with a reversing driven wheel, a low-speed driven wheel, a medium-speed driven wheel and a high-speed driven wheel which can rotate relative to the power output shaft, and the transmission shaft transmits power to enable the reversing driven wheel, the low-speed driven wheel, the medium-speed driven wheel and the high-speed driven wheel to rotate; the follow-up rotors are respectively fixed on the opposite surfaces of the reversing driven wheel and the low-speed driven wheel, the follow-up rotors are respectively fixed on the opposite surfaces of the medium-speed driven wheel and the high-speed driven wheel, the follow-up rotors are sleeved on the power output shaft, a transmission rotor is arranged between each group of follow-up rotors, and the transmission rotors are fixedly connected on the power output shaft; each transmission rotor is sleeved with a movable ring, and the movable ring moves on the transmission rotor to connect the transmission rotor and one of the follow-up rotors in the group of follow-up rotors. The utility model discloses the variable fender position of speed change mechanism design of gearbox is many.
Description
Technical Field
The utility model relates to a gearbox technical field, in particular to speed change mechanism, gearbox and model car of gearbox.
Background
The model car is a vehicle model which is manufactured according to the shape, the structure and even the interior decoration parts of the real car in strict proportion, is different from the common toy car and is provided with an engine, a gearbox and the like as the real car.
Among them, the transmission, also called a transmission, is a mechanism for changing the rotational speed and torque from an engine, which can change the gear ratio between an output shaft and an input shaft by fixing or stepping. The transmission case is generally moved to different position points through a shifting fork assembly in a gear shifting mechanism of the transmission case, so that speed changing wheel sets with different transmission ratios or transmission directions in corresponding positions in the gear shifting mechanism are matched with a power output shaft to realize a gear shifting function.
However, in the application field of model vehicles, the existing transmission has a structure that the structure of the transmission mechanism is not abundant, and the number of designed variable gears is small.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a speed change mechanism of gearbox aims at solving the technical problem that the variable gear that can design of speed change mechanism of present gearbox is few.
In order to achieve the above purpose, the utility model provides a speed change mechanism of a gearbox, which comprises a mounting shell, a power output shaft and a transmission shaft, wherein the power output shaft and the transmission shaft are arranged on the mounting shell;
the power output shaft is sleeved with a reversing driven wheel, a low-speed driven wheel, a medium-speed driven wheel and a high-speed driven wheel which can rotate relative to the power output shaft, and the transmission shaft transmits power to enable the reversing driven wheel, the low-speed driven wheel, the medium-speed driven wheel and the high-speed driven wheel to rotate;
the servo rotors are respectively fixed on the opposite surfaces of the reversing driven wheel and the low-speed driven wheel, the servo rotors are respectively fixed on the opposite surfaces of the medium-speed driven wheel and the high-speed driven wheel, the servo rotors are sleeved on the power output shaft, a transmission rotor is arranged between each group of the servo rotors, and the transmission rotors are fixedly connected to the power output shaft;
each transmission rotor is sleeved with a moving ring, and the moving ring moves on the transmission rotor along the axial direction of the power output shaft so as to connect the transmission rotor and one of the follow-up rotors.
Preferably, the transmission rotor is provided with a plurality of first protruding parts which are sequentially arranged along the circumferential direction of the transmission rotor, the follower rotor is provided with a plurality of second protruding parts which are sequentially arranged along the circumferential direction of the follower rotor, and the inner wall of the movable ring is correspondingly provided with a plurality of embedded grooves which are matched with the first protruding parts;
the movable ring is sleeved on the transmission rotor and the follow-up rotor, the embedded grooves can be correspondingly matched with the first protruding parts and the second protruding parts in a one-to-one butt joint mode to form clamping fit.
Preferably, the outer wall of the moving ring is provided with an annular groove, and the annular groove is used for forming insertion fit with an insertion part of the shifting fork.
Preferably, the device also comprises a reversing shaft arranged on the mounting shell, and a reversing driving wheel, a low-speed driving wheel, a medium-speed driving wheel and a driving wheel are arranged on the transmission shaft;
the reversing shaft is provided with an idler wheel meshed with the reversing driving wheel and the reversing driven wheel, the low-speed driving wheel is meshed with the low-speed driven wheel, the medium-speed driving wheel is meshed with the medium-speed driven wheel, and the driving wheel is meshed with the high-speed driven wheel.
Preferably, the power transmission device further comprises a power input shaft arranged on the mounting shell, and the power input shaft transmits power to the transmission shaft through a speed reduction transmission assembly.
Preferably, the speed reduction transmission assembly comprises a primary speed reduction driving wheel and a primary speed reduction driven wheel;
the one-level speed reduction driving wheel is meshed with the one-level speed reduction driven wheel, the one-level speed reduction driving wheel is installed on the power input shaft, and the one-level speed reduction driven wheel is in transmission connection with the transmission shaft.
Preferably, the speed reduction transmission assembly further comprises a mounting shaft arranged on the mounting shell, the primary speed reduction driven wheel is mounted on the mounting shaft, and the speed reduction transmission assembly further comprises a secondary speed reduction driving wheel and a secondary speed reduction driven wheel;
the second-stage speed reduction driving wheel is meshed with the second-stage speed reduction driven wheel, the second-stage speed reduction driving wheel is installed on the installation shaft, and the second-stage speed reduction driven wheel is in transmission connection with the transmission shaft.
Preferably, the secondary speed reduction driven wheel is sleeved on the power output shaft and is integrally arranged with the high-speed driven wheel.
The utility model discloses still provide a gearbox, this gearbox includes the speed change mechanism of the gearbox of aforementioned record.
The utility model discloses still provide a model car, this model car includes the gearbox of aforementioned record.
The utility model discloses speed change mechanism of technical scheme gearbox is when the operation, and transmission shaft transmission power makes the switching-over on the power output shaft from driving wheel, low-speed from driving wheel, intermediate speed from driving wheel and high-speed from the driving wheel rotation. The moving ring between the reversing driven wheel and the low-speed driven wheel can move on the transmission rotor of the power output shaft along the axial direction of the power output shaft so as to connect the transmission rotor of the power output shaft with the reversing driven wheel or the follow-up rotor of the low-speed driven wheel and further drive the power output shaft to rotate; when the moving ring is connected with the follow-up rotors of the transmission rotor and the low-speed driven wheel, the gear is forward low and when the moving ring is connected with the follow-up rotors of the transmission rotor and the reversing driven wheel, the gear is reverse. The moving ring between the medium-speed driven wheel and the high-speed driven wheel can move on the transmission rotor of the power output shaft along the axial direction of the power output shaft so as to connect the transmission rotor with the medium-speed driven wheel or the follow-up rotor of the high-speed driven wheel and further drive the power output shaft to rotate; when the moving ring is connected with the follow-up rotors of the transmission rotor and the medium-speed driven wheel, the moving ring is a forward medium-speed gear, and when the moving ring is connected with the follow-up rotors of the transmission rotor and the high-speed driven wheel, the moving ring is a forward high-speed gear. The shifting ring between the reversing driven wheel and the low-speed driven wheel and the shifting ring between the middle-speed driven wheel and the high-speed driven wheel do not move, namely when any transmission rotor and any driven rotor of the driven wheels are not connected, the power output shaft does not rotate, and the neutral gear is arranged at the moment. Therefore, the variable gears of the speed change mechanism of the gearbox are more.
Drawings
Fig. 1 is a schematic structural view of a transmission mechanism of a transmission according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a portion of the shifting mechanism of the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of a portion of the shifting mechanism of the embodiment of FIG. 1;
fig. 4 is an exploded view of part of the structure of the shifting mechanism in the embodiment of fig. 1.
Detailed Description
In the following, the embodiments of the present invention will be described in detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a speed change mechanism 100 of a gearbox, referring to fig. 1 and fig. 2, the speed change mechanism 100 of the gearbox comprises a mounting shell 110, a power output shaft 120 arranged on the mounting shell 110 and a transmission shaft 130;
the power output shaft 120 is sleeved with a reversing driven wheel 121, a low-speed driven wheel 122, a middle-speed driven wheel 123 and a high-speed driven wheel 124 which can rotate relative to the power output shaft, and the transmission shaft 130 transmits power to enable the reversing driven wheel 121, the low-speed driven wheel 122, the middle-speed driven wheel 123 and the high-speed driven wheel 124 to rotate;
the opposite surfaces of the reversing driven wheel 121 and the low-speed driven wheel 122 are respectively fixed with a follow-up rotor 10, the opposite surfaces of the medium-speed driven wheel 123 and the high-speed driven wheel 124 are respectively fixed with a follow-up rotor 10, the follow-up rotors 10 are sleeved on the power output shaft 120, a transmission rotor 20 is arranged between each group of follow-up rotors 10, and the transmission rotor 20 is fixedly connected on the power output shaft 120;
each of the driving rotors 20 is sleeved with a moving ring 30, and the moving ring 30 moves along the axial direction of the power output shaft 120 in the driving rotors 20 to connect the driving rotors 20 and one of the follower rotors 10 of the set of follower rotors 10.
In this embodiment, the transmission mechanism 100 of the transmission is used to cooperate with a fork assembly of a transmission shifting mechanism to realize a shifting function. In the transmission mechanism 100 of the transmission case, the transmission shaft 130 transmits power to rotate the direction-changing driven wheels 121, the low-speed driven wheels 122, the medium-speed driven wheels 123, and the high-speed driven wheels 124 on the power output shaft 120 relative to the power output shaft 120. The direction-changing driven wheel 121 is opposite to the rotation directions of the low-speed driven wheel 122, the medium-speed driven wheel 123, and the high-speed driven wheel 124.
Further, the reversing driven wheel 121, the low-speed driven wheel 122, the medium-speed driven wheel 123 and the high-speed driven wheel 124 are sequentially arranged, the follow-up rotors 10 are respectively fixed on the opposite surfaces of the reversing driven wheel 121 and the low-speed driven wheel 122, the follow-up rotors 10 are respectively fixed on the opposite surfaces of the medium-speed driven wheel 123 and the high-speed driven wheel 124, the follow-up rotors 10 are sleeved on the power output shaft 120, and the follow-up rotors 10 on each driven wheel can rotate on the power output shaft 120 along with the follow-up rotors. The two follow-up rotors 10 of a pair of driven wheels are a group of follow-up rotors, a transmission rotor 20 is arranged between each group of follow-up rotors 10, and the transmission rotor 20 is fixedly connected to the power output shaft 120. The transmission rotor 20 is sleeved with a moving ring 30, the moving ring 30 can move on the transmission rotor 20 under the shifting of a shifting fork assembly in the gear shifting mechanism of the gearbox so as to connect the transmission rotor 20 and one of the follower rotors 10 of the group of follower rotors 10, and the specific connection mode will be described in the following embodiments; the moving direction of the moving ring 30 is the axial direction of the power output shaft. It is easy to understand that each driven wheel rotates on the power output shaft 120 relative to the power output shaft, and under the control of the corresponding moving ring 30, when the follower rotor 10 of any driven wheel is connected with the transmission rotor 20, the transmission rotor 20 will rotate along with the follower rotor, and then the power output shaft 120 will be driven to rotate; namely, the power transmission direction is transmission shaft 130-driven wheel-follow-up rotor 10-transmission rotor 20-power output shaft 120.
Based on the above structural arrangement, the speed change principle of the speed change mechanism 100 of the transmission is explained, specifically:
the moving ring 30 between the reversing driven wheel 121 and the low-speed driven wheel 122 moves on the transmission rotor 20 along the axial direction of the power output shaft 120 so as to connect the transmission rotor 20 with the reversing driven wheel 121 or the follow-up rotor 10 of the low-speed driven wheel 122, and further drive the power output shaft 120 to rotate; the forward low gear is established when the shift ring 30 connects the drive rotor 20 and the follower rotor 10 of the low-speed driven wheel 122, and the reverse gear is established when the shift ring 30 connects the drive rotor 20 and the follower rotor 10 of the reverse driven wheel 121.
The moving ring 30 between the middle-speed driven wheel 123 and the high-speed driven wheel 124 moves on the transmission rotor thereof along the axial direction of the power output shaft 120 so as to connect the transmission rotor 20 with the middle-speed driven wheel 123 or the follower rotor 10 of the high-speed driven wheel 124, and further drive the power output shaft 120 to rotate; the forward intermediate speed stage is defined when the moving ring 30 connects the driving rotor 20 and the follower rotor 10 of the intermediate driven pulley 123, and the forward high speed stage is defined when the moving ring 30 connects the driving rotor 20 and the follower rotor 10 of the high driven pulley 124.
When the shift ring 30 between the switching driven pulley 121 and the low-speed driven pulley 122 and the shift ring 30 between the middle-speed driven pulley 123 and the high-speed driven pulley 124 are not shifted, that is, when any one of the transmission rotors 20 is not connected to the follower rotor 10 of any one of the driven pulleys, the power output shaft 120 does not rotate, and is in a neutral position at this time.
That is, by controlling one of the two moving rings 30 to move, so that the moving ring 30 connects the corresponding transmission rotor 20 with one of the follower rotors 10 in the set of follower rotors 10, the engaging operation of the corresponding gear (reverse gear, forward low gear, forward middle gear, and forward high gear) can be performed.
In a preferred embodiment, referring to fig. 3 and 4, the transmission rotor 20 is configured with a plurality of first protrusions 21 sequentially arranged along the circumferential direction thereof, the follower rotor 10 is configured with a plurality of second protrusions 11 sequentially arranged along the circumferential direction thereof, and the inner wall of the moving ring 30 is correspondingly provided with a plurality of insertion grooves 31 adapted to the plurality of first protrusions 21;
the moving ring 30 is sleeved on the transmission rotor 20 and the follower rotor 10, and the plurality of inserting grooves 31 can be correspondingly matched with the plurality of first protrusions 21 and the plurality of second protrusions 11 which are butted one by one in a clamping manner.
In this embodiment, the moving ring 30 is only sleeved on the transmission rotor 20, that is, when the moving ring is located at the initial position, the first protrusions 21 of the transmission rotor 20 are correspondingly located in the insertion grooves 31 of the moving ring 30 to form a snap fit. The shift ring 30 moves along the axial direction of the power output shaft 120, the plurality of second protruding portions 11 of the follower rotor 10 on the side of the moving direction of the transmission rotor 20 and the shift ring 30 are butted one by one, the shift ring 30 moves to the position of the follower rotor 10, and meanwhile, the transmission rotor 20 and the follower rotor 10 are sleeved with each other, the plurality of embedded grooves 31 of the shift ring 30 are clamped and matched with the plurality of second protruding portions 11 of the follower rotor 10, namely, the plurality of embedded grooves 31 are correspondingly matched with the plurality of first protruding portions 21 and the second protruding portions 11 butted one by one to form clamping and matching, so that the transmission rotor 20 and the follower rotor 10 are relatively fixed. Thus, the moving ring 30 rotates with the follower rotor 10 to drive the transmission rotor 20 to rotate, and further drive the power output shaft 120 to rotate.
Besides, in other embodiments, the transmission rotor 20 and the follower rotor 10 may be respectively provided with a first insertion groove and a plurality of second insertion grooves, and the inner wall of the moving ring 30 is correspondingly provided with a plurality of protrusions matching with the plurality of first insertion grooves. The position of the clamping structure is changed, the structure is simple and the clamping is stable.
In a preferred embodiment, referring to fig. 4, the outer wall of the shift ring 30 is provided with an annular groove 32, the annular groove 32 being adapted to form a plug-in engagement with the insertion portion of the shift fork.
In this embodiment, the inserting portion of the shifting fork is arc-shaped, the inserting portion of the shifting fork is correspondingly inserted into the annular groove 32 of the moving ring 30, the moving ring 30 can be shifted by the shifting fork to move, and the rotating action of the moving ring 30 when the transmission rotor 20 and the follower rotor 10 are connected is not affected, so that the follower rotor 10 rotates.
In a preferred embodiment, the transmission mechanism 100 of the transmission case further includes a reversing shaft 140 disposed on the mounting shell 110, and the transmission shaft 130 is provided with a reversing driving wheel 131, a low-speed driving wheel 132, a medium-speed driving wheel 133 and a transmission wheel 134;
the reversing shaft 140 is provided with an idle wheel 141 engaged with the reversing driving wheel 131 and the reversing driven wheel 121, the low-speed driving wheel 132 is engaged with the low-speed driven wheel 122, the medium-speed driving wheel 133 is engaged with the medium-speed driven wheel 123, and the driving wheel 134 is engaged with the high-speed driven wheel 124.
In this embodiment, the reversing driving wheel 131, the low-speed driving wheel 132, the medium-speed driving wheel 133 and the driving wheel 134 are fixedly arranged on the transmission shaft 130. When the transmission shaft 130 receives power to rotate, the reversing driving wheel 131, the low-speed driving wheel 132 and the medium-speed driving wheel 133 rotate along with the transmission shaft 130, the reversing driving wheel 131 is meshed with the transmission idle wheel 141 to rotate, the idle wheel 141 is further meshed with the transmission reversing driven wheel 121 to rotate, the low-speed driving wheel 132 is meshed with the transmission low-speed driven wheel 122 to rotate, and the medium-speed driving wheel 133 is meshed with the transmission medium-speed driven wheel 123 to rotate.
In the wheel set of the transmission wheel 134 and the high speed driven wheel 124, two arrangements may be adopted. In the first arrangement, the transmission wheel 134 is used as a high-speed driving wheel, the transmission wheel 134 rotates along with the transmission shaft 130, and the transmission wheel 134 is meshed with the high-speed driven wheel 124 to rotate; in the second arrangement, power is transmitted and transmitted through the high-speed driven wheel 124, the high-speed driven wheel 124 is meshed with the transmission wheel 134 to rotate, and the transmission wheel 134 further drives the transmission shaft 130 to rotate. Any one of the two setting forms can be selected, and the setting can be carried out according to actual conditions, and the specific scheme of the second setting form is further detailed in the following embodiments.
In a preferred embodiment, referring to fig. 2, the transmission mechanism 100 of the transmission further includes a power input shaft 150 disposed on the mounting shell 110, the power input shaft 150 transmitting power to the propeller shaft 130 through a reduction drive assembly 160.
In this embodiment, the power input shaft 150 receives power input and rotates on the mounting case 110, and transmits power to the transmission shaft 130 through the reduction transmission assembly 160, thereby rotating the transmission shaft 130. The reduction gear assembly 160 may employ a reduction gear set or the like, and the reduction gear assembly 160 may be a one-stage reduction, a two-stage reduction or the like, as appropriate.
In a preferred embodiment, with reference to fig. 2, the reduction transmission assembly 160 comprises a primary reduction driving wheel 161 and a primary reduction driven wheel 162;
the first-stage speed reduction driving wheel 161 is engaged with the first-stage speed reduction driven wheel 162, the first-stage speed reduction driving wheel 161 is installed on the power input shaft 150, and the first-stage speed reduction driven wheel 162 is in transmission connection with the transmission shaft 130.
In this embodiment, the primary speed-reducing driving wheel 161 rotates along with the power input shaft 150 to engage with and drive the primary speed-reducing driven wheel 162 to rotate, and the primary speed-reducing driven wheel 162 further drives the transmission shaft 130 to rotate. According to different situations, when only one-stage speed reduction is needed, the one-stage speed reduction driven wheel 162 can be directly arranged on the transmission shaft 130; when multi-stage (e.g., two-stage) reduction is required, another reduction transmission member may be disposed between the one-stage reduction driven wheel 162 and the transmission shaft 130 for connection. The reduction ratio of the first-stage speed reduction is set according to actual requirements, and is not limited herein.
In a preferred embodiment, referring to fig. 2, the transmission mechanism 100 of the transmission case further includes a mounting shaft 170 disposed on the mounting shell 110, the primary speed-reducing driven wheel 162 is mounted on the mounting shaft 170, and the speed-reducing transmission assembly 160 further includes a secondary speed-reducing driving wheel 163 and a secondary speed-reducing driven wheel 164;
second grade speed reduction action wheel 163 meshes with second grade speed reduction driven wheel 164, and second grade speed reduction action wheel 163 installs on installation axle 170, and second grade speed reduction driven wheel 164 is connected with transmission shaft 130 transmission.
In this embodiment, the primary speed-reducing driving wheel 161 rotates with the power input shaft 150 to engage and drive the primary speed-reducing driven wheel 162 to rotate, the secondary speed-reducing driving wheel 163 rotates with the primary speed-reducing driven wheel 162 to engage and drive the secondary speed-reducing driven wheel 164 to rotate, and the secondary speed-reducing driven wheel 164 further drives the transmission shaft 130 to rotate. As an embodiment, the primary decelerating driven wheel 162 and the secondary decelerating driving wheel 163 may be integrally provided. Depending on the situation, when only two-stage reduction is required, the two-stage reduction driven wheel 164 may be mounted directly on the transmission shaft 130, or other transmission arrangements may be adopted; where more than one reduction stage (e.g., three) is desired, additional reduction gearing may be provided between secondary reduction driven wheel 164 and drive shaft 130 to provide the connection. The reduction ratio of the two-stage speed reduction is set according to actual requirements, and is not limited herein.
In a preferred embodiment, referring to fig. 2, the secondary speed reducing driven wheel 164 is sleeved on the power output shaft 120 and is integrally disposed with the high-speed driven wheel 124.
In this embodiment, the high-speed driven wheel 124 and the secondary speed-reducing driven wheel 164 rotate integrally to engage with the transmission wheel 134 to rotate, and the transmission wheel 134 further drives the transmission shaft 130 to rotate. In this transmission arrangement, the high-speed driven wheel 124 and the transmission wheel 134 correspond to a three-stage reduction wheel set, i.e., the power input shaft 150 transmits power to the transmission shaft 130 through three-stage reduction.
The utility model discloses still provide a gearbox, this gearbox include the speed change mechanism 100 of the gearbox of aforementioned record, the concrete structure of the speed change mechanism 100 of this gearbox refers to above-mentioned embodiment, because this gearbox has adopted all technical scheme of above-mentioned all embodiments, consequently has all technical effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details here.
The utility model discloses still provide a model car, this model car includes the gearbox of above-mentioned embodiment record, and the concrete structure of this gearbox refers to above-mentioned embodiment, because this model car has adopted all technical scheme of above-mentioned all embodiments, consequently has all technical effect that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary detail here.
What just go up be the utility model discloses a part or preferred embodiment, no matter be characters or the drawing can not consequently restrict the utility model discloses the scope of protection, all with the utility model discloses a holistic thought down, utilize the equivalent structure transform that the contents of the description and the drawing do, or direct/indirect application all includes in other relevant technical field the utility model discloses the within range of protection.
Claims (10)
1. The speed change mechanism of the gearbox is characterized by comprising a mounting shell, a power output shaft and a transmission shaft, wherein the power output shaft and the transmission shaft are arranged on the mounting shell;
the power output shaft is sleeved with a reversing driven wheel, a low-speed driven wheel, a medium-speed driven wheel and a high-speed driven wheel which can rotate relative to the power output shaft, and the transmission shaft transmits power to enable the reversing driven wheel, the low-speed driven wheel, the medium-speed driven wheel and the high-speed driven wheel to rotate;
the servo rotors are respectively fixed on the opposite surfaces of the reversing driven wheel and the low-speed driven wheel, the servo rotors are respectively fixed on the opposite surfaces of the medium-speed driven wheel and the high-speed driven wheel, the servo rotors are sleeved on the power output shaft, a transmission rotor is arranged between each group of the servo rotors, and the transmission rotors are fixedly connected to the power output shaft;
each transmission rotor is sleeved with a moving ring, and the moving ring moves on the transmission rotor along the axial direction of the power output shaft so as to connect the transmission rotor and one of the follow-up rotors.
2. The speed change mechanism of the gearbox according to claim 1, wherein a plurality of first protrusions are sequentially arranged on the transmission rotor along the circumferential direction of the transmission rotor, a plurality of second protrusions are sequentially arranged on the follower rotor along the circumferential direction of the follower rotor, and a plurality of embedding grooves matched with the plurality of first protrusions are correspondingly arranged on the inner wall of the moving ring;
the movable ring is sleeved on the transmission rotor and the follow-up rotor, the embedded grooves can be correspondingly matched with the first protruding parts and the second protruding parts in a one-to-one butt joint mode to form clamping fit.
3. A gear change mechanism for a gearbox according to claim 1 or 2, characterised in that the outer wall of the shift ring is provided with an annular groove for a plug-in engagement with a plug-in portion of a shift fork.
4. The speed change mechanism of a transmission according to claim 1, further comprising a reversing shaft disposed on said mounting shell, said transmission shaft having a reversing drive wheel, a low speed drive wheel, a medium speed drive wheel and a drive wheel mounted thereon;
the reversing shaft is provided with an idler wheel meshed with the reversing driving wheel and the reversing driven wheel, the low-speed driving wheel is meshed with the low-speed driven wheel, the medium-speed driving wheel is meshed with the medium-speed driven wheel, and the driving wheel is meshed with the high-speed driven wheel.
5. The variator of claim 4, further comprising a power input shaft disposed on the mounting shell, the power input shaft transmitting power to the drive shaft through a speed reduction drive assembly.
6. The variator of a transmission of claim 5, wherein the reduction drive assembly comprises a primary reduction drive wheel and a primary reduction driven wheel;
the one-level speed reduction driving wheel is meshed with the one-level speed reduction driven wheel, the one-level speed reduction driving wheel is installed on the power input shaft, and the one-level speed reduction driven wheel is in transmission connection with the transmission shaft.
7. The variator of claim 6, further comprising a mounting shaft disposed on the mounting housing, the primary reduction driven wheel being mounted on the mounting shaft, the reduction transmission assembly further comprising a secondary reduction drive wheel and a secondary reduction driven wheel;
the second-stage speed reduction driving wheel is meshed with the second-stage speed reduction driven wheel, the second-stage speed reduction driving wheel is installed on the installation shaft, and the second-stage speed reduction driven wheel is in transmission connection with the transmission shaft.
8. The speed change mechanism of a transmission according to claim 7, wherein the secondary speed reduction driven wheel is sleeved on the power output shaft and is integrally arranged with the high-speed driven wheel.
9. A gearbox comprising a variator of a gearbox according to any of claims 1 to 8.
10. A model vehicle comprising a gearbox according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220103382.0U CN217177295U (en) | 2022-01-12 | 2022-01-12 | Speed change mechanism of gearbox, gearbox and model car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220103382.0U CN217177295U (en) | 2022-01-12 | 2022-01-12 | Speed change mechanism of gearbox, gearbox and model car |
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| Publication Number | Publication Date |
|---|---|
| CN217177295U true CN217177295U (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220103382.0U Active CN217177295U (en) | 2022-01-12 | 2022-01-12 | Speed change mechanism of gearbox, gearbox and model car |
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| Country | Link |
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| CN (1) | CN217177295U (en) |
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- 2022-01-12 CN CN202220103382.0U patent/CN217177295U/en active Active
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