CN108790804A - A kind of clutch on automotive wheel - Google Patents

Abstract

The invention provides a clutch mechanism on an automobile wheel, which belongs to the technical field of automobiles. The clutch mechanism includes a first mounting plate and a second mounting plate arranged in the housing. The first mounting plate is provided with a plurality of first mounting holes corresponding to the first sprocket three-to-one. The first rotating shaft is fixedly provided with The first clutch disc located in the first mounting hole, the second clutch disc located in the second mounting hole is fixedly arranged on the second shaft, and the first mounting plate and the second mounting plate are provided with each first mounting hole One-to-one correspondence with the fixed plate, the fixed plate is coaxially provided with the first locking disc located in the first mounting hole and the second locking disc located in the second mounting hole, and the driving half shaft is provided with a hole communicating with the hydraulic chamber. The oil delivery hole; the first locking disc, the second locking disc and the fixing plate are respectively connected by a torsion spring. The invention has the advantages of being able to selectively control the rotation mode of the wheels and the like.

Description

A clutch mechanism on a car wheel

technical field

The invention belongs to the technical field of automobiles, and relates to a clutch mechanism on an automobile wheel.

Background technique

In recent years, SUV models have been favored by consumers in China, which shows that Chinese consumers have a greater demand for the passability of cars while liking the appearance of cars. However, the existing SUV models only have a car chassis that is higher than that of ordinary cars. Slightly higher, the substantive components that improve the passability of the car are not essentially different from those of the car. Market orientation shows that consumers who buy SUV models have a comprehensive consideration of the comfort, economy, use cost and purchase cost of the car. The comfort and passability of the car are relatively contradictory performances, and it is difficult to balance the two.

In the Chinese patent CN03227792.X, a transmission mechanism of an automobile is disclosed, including a wheel set and a transmission mechanism, wherein the wheel set is composed of a plurality of wheels, the transmission mechanism is pivotally connected to the front and rear axles by an axial differential, and the half shaft is pivotally connected to the transmission The central gear of the gear set, and the terminal gear of the transmission gear set are pivoted to the wheels. It takes into account the function of the car to cross obstacles in the off-road process, and sets the wheels of the car into multiple, multiple wheel arrays to improve the off-road function of the car. However, it does not take into account the stability, comfort and stability of the car. Passability on flat ground.

In order to integrate the passability, stability, comfort and off-road performance of the car, it is necessary to switch between the extreme passability and extreme comfort performance of the car, so that the driver can rotate the extreme passability or extreme comfort of the car according to the road conditions. mode to improve the driving experience and overall performance of the car.

Contents of the invention

The purpose of the present invention is to provide a clutch mechanism on the wheel of an automobile in view of the above-mentioned problems existing in the prior art. And switch.

The purpose of the present invention can be achieved through the following technical solutions: a clutch mechanism on the wheel of an automobile, characterized in that the automobile comprises a drive half shaft and at least three wheel bodies that are evenly distributed in the circumferential direction on the drive half shaft, each wheel body It is connected with the driving half shaft through a housing, the wheel body is connected with the housing through a short shaft, and the driving half shaft is connected with each short shaft through a synchronous transmission mechanism, and the synchronous transmission mechanism It includes the first chain and the second chain, and also includes two sprockets fixed on each short shaft, two sprockets on the same short shaft, which are respectively located on the inside and outside of the wheel body on the short shaft, Two sprockets 2 parallel to the two sprockets 1 on the same short shaft are arranged on the drive half shaft, and several sprockets corresponding to the sprockets on the inside of the wheel body are arranged on the inner side of the wheel body. The first sprocket three, the sprocket one, the sprocket two and the first sprocket three on the inner side of the wheel body are connected by the first chain; the outer side of the wheel body is provided with several sprocket wheels one by one A corresponding second sprocket three, sprocket one, sprocket two and second sprocket three located outside the wheel body are connected through a second chain, and the driving half shaft is connected to the housing in rotation;

The clutch mechanism includes a first mounting plate and a second mounting plate arranged in the casing, the first mounting plate is provided with a number of first mounting holes corresponding to the first sprocket three-to-one, the second mounting There are a number of second installation holes corresponding to the second sprocket three one-to-one on the plate, the first sprocket three is connected to the housing through the first rotating shaft, and the first rotating shaft is connected to the housing through bearing rotation , the second sprocket three is connected to the casing through a second rotating shaft, the second rotating shaft is connected to the casing through a bearing for rotation, and a first clutch located in the first mounting hole is fixedly arranged on the first rotating shaft disc, the second rotating shaft is fixedly provided with a second clutch disc located in the second mounting hole, and a fixing plate corresponding to each first mounting hole is arranged between the first mounting plate and the second mounting plate , the fixed plate is coaxially provided with a first locking plate located in the first mounting hole and a second locking plate located in the second mounting hole, and the space between the first mounting plate and the second mounting plate A closed hydraulic chamber is formed in the casing, and an oil delivery hole communicating with the hydraulic chamber is opened on the driving half shaft; the first locking disc and the second locking disc are respectively connected to the fixing plate through a torsion spring.

In the above-mentioned clutch mechanism on a car wheel, the first chain and the second chain are both double-sided chains, the sprocket on the inner side of the wheel body meshes with the inner side of the first chain, and the chain wheel on the inner side of the wheel body Wheel two meshes with the inside of the first chain, and the first sprocket three meshes with the outside of the first chain; sprocket one on the outside of the wheel body meshes with the inside of the second chain, and sprocket two on the outside of the wheel body meshes with the second chain The inside of the chain meshes, and the second sprocket three meshes with the outside of the second chain.

The double-sided chain refers to the chain disclosed in the Chinese patent CN201810025394.4. Both sides of the chain have positioning holes engaged with the sprocket to improve the control of the position of the chain and the stability of the transmission. In this application, not only can The multiple wheel bodies run synchronously, and the distribution of the first chain and the second chain on the casing can be made more compact.

For the sake of comfort, the running status and working principle of the car are as follows:

The pressure of the hydraulic oil in the hydraulic chamber is small enough to drive the first locking disc and the second locking disc close to the first clutch disc and the second clutch disc respectively. Under the transmission of the second chain, each short shaft is synchronously driven by the driving half shaft. Take three wheel bodies on the same wheel structure as an example, two of which are in contact with the ground, and the other wheel body is not in contact with the ground. The steering wheel Connect a steering structure, which is the steering structure of a traditional car, and will not be described in detail here. At this time, the car is equivalent to having nine vehicles in contact with the ground, and the stability of the car is extremely high. Moreover, due to the single wheel The diameter is small, and the noise during the running of the car is small. Since the two wheel bodies in a single wheel structure that are in contact with the ground at the same time run synchronously, and the distance between the contact points with the ground is small, the distance between the wheel body and the ground The possibility of longitudinal skidding, wear, and sideslip is greatly reduced, and the wheel width of the wheel body can be increased to cope with small potholes and speed bumps on ordinary urban roads.

Considering the off-road performance of the car, the running state and working principle of the car are as follows:

The hydraulic oil is delivered to the hydraulic chamber to increase the pressure in the hydraulic chamber, and the hydraulic pressure acts on the inner side of the first locking disc and the inner side of the second locking disc to drive the first locking disc and the second locking disc to approach respectively. The first clutch disc and the second clutch disc, at this time, the first chain and the second chain are locked, that is, sprocket one, sprocket two, first sprocket three and second sprocket three are all stationary relative to the housing, Driven by the engine, the driving half shaft rotates, which can directly determine the rotation of the housing. Taking three wheel bodies on the same wheel structure as an example, the wheel structure of the car at this time is a triangular structure, which can overcome large potholes. Function;

In order to reduce the wear and impact force of the clutch mechanism, the first lock plate and the second lock plate are connected to the fixed plate through a torsion spring respectively. When the impact force is large, the torsion spring can buffer the impact force, and the first lock plate The locking disc and the second locking disc are affected by the liquid pressure, and their force is moderate. When they contact the first clutch disc and the second clutch disc, they are in the process of multi-point contact, gradual separation and gradual engagement, that is, when the off-road function is started, this The clutch structure has sufficient reaction time and a good buffering process. In this process, the first chain and the second chain are not directly locked, but can be controlled by the depth of the accelerator pedal. In off-road mode Down, adjust the liquid pressure in the hydraulic chamber, the greater the stepping displacement of the accelerator pedal, the greater the pressing force between the first locking disc and the second locking disc and the first clutch disc and the second clutch disc respectively, and the lock The driving half shaft directly drives the housing to rotate to improve the overturning function of the car. When the displacement of the accelerator pedal is small, it can temporarily restore the smooth running mode, thus improving the operability and driving experience of the driver.

In addition, compared with the prior art, the present application also has the following advantages:

1. The first chain and the second chain are arranged on the inside and outside of the wheel body to improve the transmission stability and reliability of the wheel body;

2. There are multiple wheel bodies in the same wheel structure of the vehicle, and when driving on a smooth road with high frequency of use, only part of the wheel bodies are in contact with the ground, and a certain wheel body or a certain number of wheel bodies may be damaged or Normal driving in the case of a flat tire, and since the wheels in contact with the ground are random, the wear between the wheels is relatively uniform;

3. The clutch mechanism to achieve locking and separation adopts the method of multi-point simultaneous engagement or simultaneous separation, which helps to improve reliability, and adopts the hydraulic method, which can effectively buffer and protect the joint parts;

4. It can run in different modes under different road conditions, and in the off-road mode, you can quickly switch between off-road mode and smooth running mode through the control of the accelerator pedal, so as to improve the operability of the car and the stability of the road. Coping ability.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the automobile in this embodiment.

Fig. 2 is a schematic diagram of the distribution structure of each vehicle in this embodiment.

Fig. 3 is a sectional view of the wheel structure in this embodiment.

Fig. 4 is a schematic structural diagram of the clutch mechanism in this embodiment.

Fig. 5 is a schematic perspective view of the first mounting plate and the first locking disc in this embodiment.

Among the figure, 11, steering wheel; 12, engine; 13, driving half shaft; 14, wheel body; 15, housing; 16, vehicle body; 21, short shaft; 22, first chain; 23, second chain; 24 , sprocket one; 25, sprocket two; 26, first sprocket three; 27, second sprocket three; 31, first mounting plate; 32, second mounting plate; 33, first mounting hole; 34, The second installation hole; 35, the first rotating shaft; 36, the second rotating shaft; 37, the first clutch disc; 38, the second clutch disc; 41, the fixed plate; 42, the first locking disc; 43, the second locking Disk; 44, hydraulic chamber; 45, oil delivery hole; 46, torsion spring.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, this automobile comprises vehicle body 16 and the steering wheel 11 that is arranged on the vehicle body 16, front drive shaft and rear drive shaft, and steering wheel 11 is arranged on the vehicle body 16 axis ahead of the front drive wheel On, the vehicle body 16 is provided with the engine 12 that connects the front drive shaft and the rear drive shaft. The inner ends of the two driving half-shafts 13 on the middle and rear drive shafts are all connected by a differential, and the outer ends of each driving half-shaft 13 are connected with a wheel structure. At least three wheel bodies 14 on the shaft 13, each wheel body 14 is connected to the driving half shaft 13 through a housing 15, and the wheel body 14 is connected to the housing 15 through a short shaft 21, and the driving half shaft 13 is connected to the driving half shaft 13. The short shafts 21 are connected by a synchronous transmission mechanism. The synchronous transmission mechanism includes a first chain 22 and a second chain 23, and also includes two sprockets 24 fixed on each short shaft 21, located on the same short shaft 21. The two sprockets one 24 on the shaft are respectively located on the inside and outside of the wheel body 14 on the short shaft 21, and two chains parallel to the two sprockets one 24 on the same short shaft 21 are respectively arranged on the driving half shaft 13. Wheel two 25, the inner side of the wheel body 14 is provided with several first sprocket wheels three 26 corresponding to each sprocket wheel one 24 of the inner side of the wheel body 14, and the first sprocket wheel three 26 positioned at the inner side of the wheel body 14, the second sprocket wheel 25 and The first sprocket three 26 are connected by the first chain 22; the outside of the wheel body 14 is provided with a plurality of second sprocket three 27 corresponding to the sprocket one 24 on the outside of the wheel body 14, and the ones on the outside of the wheel body 14 Link to each other by the second chain 23 between sprocket one 24, sprocket two 25 and the second sprocket three 27; 27 clutch mechanism for locking or separation; the drive half shaft 13 is rotatably connected to the housing 15 .

As shown in Fig. 3, Fig. 4 and Fig. 5, the clutch mechanism includes a first mounting plate 31 and a second mounting plate 32 arranged in the housing 15, and a plurality of three-wheeled sprocket wheels are provided on the first mounting plate 31. 26 one-to-one corresponding to the first mounting hole 33, the second mounting plate 32 is provided with several second mounting holes 34 corresponding to the second sprocket three 27 one-to-one, the first sprocket three 26 passes through the first rotating shaft 35 and The casing 15 is connected, the first rotating shaft 35 is rotatably connected to the casing 15 through a bearing, the second sprocket three 27 is connected to the casing 15 through a second rotating shaft 36, and the second rotating shaft 36 is rotatably connected to the casing 15 through a bearing, The first rotating shaft 35 is fixedly provided with a first clutch disc 37 located in the first mounting hole 33 , the second rotating shaft 36 is fixedly provided with a second clutch disc 38 located in the second mounting hole 34 , the first mounting plate 31 and A fixed plate 41 corresponding to each of the first mounting holes 33 is arranged between the second mounting plates 32, and a first locking plate 42 located in the first mounting holes 33 and a first locking disc 42 located in the second mounting holes 33 are coaxially arranged on the fixed plate 41. The second locking disc 43 in the mounting hole 34 forms a closed hydraulic chamber 44 in the housing 15 between the first mounting plate 31 and the second mounting plate 32, and a hole communicating with the hydraulic chamber 44 is opened on the driving half shaft 13. The oil delivery hole 45 ; the first locking disc 42 , the second locking disc 43 and the fixing plate 41 are respectively connected by a torsion spring 46 .

The first chain 22 and the second chain 23 are double-sided chains, and the sprocket wheel one 24 positioned at the inside of the wheel body 14 is engaged with the inside of the first chain 22, and the sprocket wheel two 25 positioned at the inside of the wheel body 14 is engaged with the inside of the first chain 22. The inside meshes, the first sprocket three 26 meshes with the outside of the first chain 22; the sprocket one 24 outside the wheel body 14 meshes with the inside of the second chain 23, and the sprocket two 25 outside the wheel body 14 meshes with the second chain 23. The inner side of the chain 23 is engaged, and the second sprocket three 27 is engaged with the outer side of the second chain 23 .

The double-sided chain refers to the chain disclosed in the Chinese patent CN201810025394.4. Both sides of the chain have positioning holes engaged with the sprocket to improve the control of the position of the chain and the stability of the transmission. In this application, not only can The multiple wheel bodies 14 run synchronously, and the distribution of the first chain 22 and the second chain 23 on the casing 15 can be made more compact.

There are three wheel bodies 14 on the wheel structure.

The automobile also includes an accelerator pedal that can adjust the output power of the engine 12. The stepping displacement of the accelerator pedal is proportional to the output power of the engine 12, and the pressure of the hydraulic oil in the hydraulic chamber 44 is proportional to the stepping displacement of the accelerator pedal of the automobile. Proportional.

The way to realize it may be: setting a sensor on the hydraulic pump that supplies oil to the hydraulic chamber 44, the sensor acquires the displacement signal of the accelerator pedal, and drives the hydraulic pump to output pressure to the outside.

It can also be: the accelerator pedal is connected to the throttle valve through steel strands, the opening of the throttle valve determines the intake air volume, that is, the output power of the engine 12, and the throttle valve is provided with an opening sensor, which is connected to the output hydraulic oil of the hydraulic chamber 44. The hydraulic pump is connected, and the opening sensor can convert the signal into a signal for the output pressure of the hydraulic pump to control the output pressure of the hydraulic pump. This type of structure is a conventional structure, and those skilled in the art can undoubtedly In addition, there are many signal processing methods related to the two in the prior art.

For the sake of comfort, the running status and working principle of the car are as follows:

The pressure of the hydraulic oil in the hydraulic chamber 44 is small enough to drive the first locking disc 42 and the second locking disc 43 close to the first clutch disc 37 and the second clutch disc 38 respectively, and the drive shaft 13 is driven by the engine 12 Rotate down, under the transmission of the first chain 22 and the second chain 23, each short shaft 21 is synchronously driven by the driving half shaft 13, taking three wheel bodies 14 on the same wheel structure as an example, wherein two wheel bodies 14 are in contact On the ground, the other wheel body 14 is not in contact with the ground, and the steering wheel 11 is connected to a steering structure, which is the steering structure of a traditional car, which will not be described in detail here. At this time, the car is equivalent to having nine vehicles in contact with the ground. , the stability of the car is extremely high, and because the diameter of the single wheel body 14 is small, the noise during the running of the car is small, because the two wheel bodies 14 in the single wheel structure that are in contact with the ground at the same time run synchronously and are in contact with the ground The distance between the contact points of the wheel body 14 is small, the possibility of longitudinal slipping, wear and sideslip between the wheel body 14 and the ground is greatly reduced, and the wheel width of the wheel body 14 can be increased to cope with small pits on ordinary urban roads Pots, speed bumps, etc.

Considering the off-road performance of the car, the running state and working principle of the car are as follows:

The hydraulic oil is delivered to the hydraulic chamber 44 to increase the pressure in the hydraulic chamber 44, and the hydraulic pressure acts on the inner side of the first locking disc 42 and the inner side of the second locking disc 43 to drive the first locking disc 42 and the second locking disc. The locking disc 43 is close to the first clutch disc 37 and the second clutch disc 38 respectively. At this moment, the first chain 22 and the second chain 23 are locked, that is, sprocket one 24, sprocket two 25, first sprocket three 26 and the second sprocket three 27 are all stationary relative to the housing 15, and the driving half shaft 13 rotates under the drive of the engine 12, which can directly determine the rotation of the housing 15. Taking the same wheel structure as an example with three wheel bodies 14, this The wheel structure of the current car is a triangular structure, which has the function of turning over larger potholes;

In order to reduce the wear and impact force of the clutch mechanism, the first locking disc 42 and the second locking disc 43 are connected to the fixed plate 41 through a torsion spring 46 respectively. When the impact force is large, the torsion spring 46 can buffer the impact Force, and the first locking disc 42 and the second locking disc 43 are affected by the liquid pressure, and their force is relaxed. When they contact the first clutch disc 37 and the second clutch disc 38, they are in the state of multi-point contact, gradual separation and gradual engagement. process, that is, when the off-road function is started, the clutch structure has sufficient reaction time and good buffering process. The control of the stepping depth of the pedal, in the off-road mode, adjust the hydraulic pressure in the hydraulic chamber 44, the greater the stepping displacement of the accelerator pedal, the first locking disc 42 and the second locking disc 43 are connected with the first clutch disc 37 respectively. The pressing force between the second clutch disc 38 and the second clutch disc 38 is greater, and the locking strength is higher. The driving half shaft 13 directly drives the housing 15 to rotate, so as to improve the overturning function of the car. When the displacement of the accelerator pedal is small, it can be temporarily restored. The smooth running mode improves the driver's operability and driving experience.

In addition, compared with the prior art, the present application also has the following advantages:

1. The first chain 22 and the second chain 23 are distributed on the inside and outside of the wheel body 14 to improve the transmission stability and reliability of the wheel body 14;

2. There are multiple wheel bodies 14 in the same wheel structure of this car, and when driving on a smooth road with high frequency of use, only part of the wheel bodies 14 are in contact with the ground. 14 is damaged or run normally under the situation of blown tire, and, because the wheel body 14 that is in contact with the ground is random, the wear and tear between each wheel body 14 is also relatively uniform;

3. The clutch mechanism to achieve locking and separation adopts the method of multi-point simultaneous engagement or simultaneous separation, which helps to improve reliability, and adopts the hydraulic method, which can effectively buffer and protect the joint parts;

4. Adopting the way of single wheel, that is, the way of single steering wheel 11 to realize the steering of the car can simplify the steering system of the car without affecting the stability of the car. On the contrary, it surpasses the four-wheel or three-wheel way of the traditional car Conducive to vehicle stability and safety;

5. It can run in different modes under different road conditions, and in the off-road mode, you can quickly switch between off-road mode and smooth running mode through the control of the accelerator pedal, so as to improve the operability of the car and the stability of the road surface Coping ability.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (2)

1. the clutch on a kind of automotive wheel, which is characterized in that automobile includes jack shaft (13) and is circumferentially uniformly distributed At least three wheel bodys (14) on jack shaft (13) pass through a shell (15) between each wheel body (14) and jack shaft (13) It is connected, is connected by a short axle (21) between the wheel body (14) and shell (15), the jack shaft (13) and each short axle (21) it is connected by a synchronous drive mechanism between, the synchronous drive mechanism includes the first chain (22) and the second chain (23), further include two sprocket wheels one (24) being fixed in every short axle (21), two sprocket wheels being located in same short axle (21) One (24) are located at the inner side and outer side of the wheel body (14) in the short axle (21), be provided on the jack shaft (13) with together Two sprocket wheels one (24) in one short axle (21) distinguish two parallel sprocket wheels two (25), and the wheel body (14) is if inside is provided with It is dry a with one-to-one first sprocket wheel three (26) of each sprocket wheel one (24) on the inside of wheel body (14), the chain being located on the inside of wheel body (14) It takes turns and is connected by the first chain (22) between one (24), sprocket wheel two (25) and the first sprocket wheel three (26)；On the outside of the wheel body (14) Several and one-to-one second sprocket wheel three (27) of sprocket wheel one (24) on the outside of wheel body (14) are provided with, are located at wheel body (14) outside It is connected by the second chain (23) between the sprocket wheel one (24) of side, sprocket wheel two (25) and the second sprocket wheel three (27), the driving half Axis (13) is rotatably connected on shell (15).

2. the clutch on a kind of automotive wheel according to claim 1, which is characterized in that first chain (22) and Second chain (23) is two-sided chain, is located on the inside of sprocket wheel one (24) and the first chain (22) on the inside of wheel body (14) and nibbles It closes, is located at the sprocket wheel two (25) on the inside of wheel body (14) and is engaged with the inside of the first chain (22), the first sprocket wheel three (26) and first It engages in the outside of chain (22)；Sprocket wheel one (24) on the outside of wheel body (14) is engaged with the inside of the second chain (23), is located at Sprocket wheel two (25) on the outside of wheel body (14) is engaged with the inside of the second chain (23), the second sprocket wheel three (27) and the second chain (23) Outside engagement.