A driving device based on automobile electric door opening and an automobile

Abstract

The utility model relates to the technical field of automobile, especially based on automobile electric door opening's drive arrangement includes: drive unit, under the action of drive electric energy forms first driving force, processing unit is connected drive unit to receive first driving force, and to first driving force does processing to form basic transmission power output, transmission unit is connected processing unit to receive basic transmission power, forms transmission power output according to basic transmission power, execution unit is connected transmission unit to receive transmission power, under the action of transmission power control an execution crank execution in transmission power matching action, wherein transmission unit includes, first transmission wheel, the output end of connecting processing unit, second transmission wheel, transmission belt, transmission belt engages and connects first transmission wheel and second transmission wheel, first transmission wheel rotates under the action of basic transmission power and drives transmission belt movement, in the process of transmission belt movement second transmission wheel moves to form transmission power output.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a drive device for electric car door opening and a car. Background Technology

[0002] Currently, some cars are equipped with door opening mechanisms that automatically open or close the car doors. Existing door opening mechanisms, such as... Figure 1 As shown, existing drive devices generally include a door connecting plate 10 fixedly installed on the car door body, a motor 11, a primary double gear 12, a secondary double gear 13, and an output gear 14 connected to the motor gear 110. The output gear 14 is fixedly connected to a screw 16 fitted with a nut 15, and one end of a support rod 17 is fixedly connected to the lower end of the nut 15. The other end of the support rod 17 is connected to a support rod bracket 18. Its working principle is as follows: during the rotation of the motor, the motor gear 110 drives the primary double gear 12, the secondary double gear 13, and the output gear 14 to transmit power. The output gear 14 drives the screw 16 to rotate. At this time, the nut 15 is displaced along the thread on the screw 16, which simultaneously drives the support rod 17 to move. That is, the support rod bracket is displaced to realize the opening or closing of the car door. The disadvantages of this technical solution are as follows: First, by using a parallel transmission gear set to transmit power to the actuator screw, and considering the force on the actuator crank and the heat dissipation during the transmission process of the screw and nut, the actuator crank needs to be placed between the motor and the actuator screw. That is, the straight distance between the motor output end and the screw is extended, so the parallel transmission set needs to increase the number of transmissions (i.e., use multi-stage parallel gears) to achieve the transmission of force. The installation precision requirements for multi-stage parallel gears are relatively high. For example, the motor gear 110, the first-stage double gear 12, the second-stage double gear 13, and the output gear 14 are all located in the gear cavity formed by the bottom cover 19 and the top cover 20. Since the four gears need to mesh with each other, the gear cavity needs to be set with three center distances at the same time. The requirements for its processing method, manufacturing precision, and tolerance are relatively high. For example, if the center distance of the gears is too small, the gear meshing will be relatively difficult. If the center distance of the gears is too large, the backlash will increase and vibration will be more likely to occur. Second, the driving force is transmitted by using parallel gear sets, which has relatively poor stability. Moreover, after two stages of double gear transmission, the transmission efficiency is relatively low. Third, the structure is relatively complex and occupies a relatively large volume, which is not conducive to miniaturization design. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a drive device for electric car door opening and a car, which aims to improve the stability and transmission efficiency of motor drive force transmission, reduce the processing difficulty of the drive device, and reduce noise.

[0004] On the one hand, this utility model provides 1. a drive device based on an electric car door, characterized in that it includes: The drive unit generates the first driving force under the action of driving electrical energy; A processing unit, connected to the driving unit, is used to receive the first driving force and process the first driving force to form a basic transmission force output. A transmission unit, connected to the processing unit, is used to receive the basic transmission force and generate a transmission force output based on the basic transmission force. An execution unit, connected to the transmission unit, receives the transmitted power and, under the action of the transmitted power, controls an execution crank to perform an action matching the transmitted power. The transmission unit includes... The first transmission wheel is connected to the output end of the processing unit. Second drive wheel; A transmission belt engages with a first transmission wheel and a second transmission wheel. The first transmission wheel rotates under the action of the basic transmission force and drives the transmission belt to move. During the movement of the transmission belt, the second transmission wheel moves to generate the transmission force output.

[0005] Preferably, in the above-described drive device for electric car doors, the processing unit includes: A first processing device, wherein the input end of the first processing device is connected to the output end of the driving unit, is used to receive the first driving force and perform conversion processing on the first driving force to form a first source power. The second processing device is connected to the output terminal of the first processing device, and generates the basic transmission force based on the first source power when the second processing device is in the unlocked state.

[0006] Preferably, in the above-mentioned drive device based on electric car door opening, the first processing device is formed by a planetary gear set, and the output end of the drive unit is connected to the sun gear of the planetary gear set.

[0007] Preferably, in the above-mentioned drive device based on electric car door opening, the second processing device consists of an electromagnetic damper, one end of the rotating shaft of the electromagnetic damper is connected to the sun gear of the planetary gear set, and the other end of the rotating shaft of the electromagnetic damper is connected to the transmission unit.

[0008] Preferably, the above-mentioned drive device based on electric car door opening further includes a first housing for accommodating the drive unit and the processing unit. The first housing has a first through hole at its end, and the output end of the processing unit passes through the first through hole to connect to the transmission unit.

[0009] Preferably, the above-described drive device for electric car doors further includes a second housing for accommodating the first drive wheel, the second drive wheel, and the drive belt, wherein the second housing is provided with a first drive frame for fixing the first drive wheel and a second drive frame for fixing the second drive wheel.

[0010] Preferably, in the above-mentioned drive device based on an electric car door, the execution unit is connected to the transmission unit to receive the transmission force and, under the action of the transmission force, controls an execution crank to perform an action matching the transmission force, specifically including: A first lead screw is fixedly connected to a second transmission wheel; the first lead screw is driven to rotate when the second transmission wheel is in operation. A lead screw nut is fitted onto the first lead screw and fixedly connected to the actuator crank. During the rotation of the first lead screw, the lead screw nut is displaced along the first lead screw so that the actuator crank performs an action that matches the power transmission.

[0011] Preferably, the above-described drive device for electric car doors further includes a third housing that accommodates the first lead screw, the lead screw nut, and the actuator crank.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In this utility model, the transmission unit adopts a synchronous belt drive, that is, it uses a first transmission wheel and a second transmission wheel, and a transmission belt to realize the transmission of driving force. During the installation process, only the first transmission wheel and the second transmission wheel need to be installed, and the installation process is simple. In addition, compared with the parallel gear set transmission, the synchronous belt drive has a relatively stable force, a long service life, and the center distance requirement of the first transmission wheel and the second transmission wheel is more relaxed than that of the parallel transmission. It also does not have the high requirements for gear precision in the parallel transmission. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a drive device in the prior art; Figure 2 An exploded view of the structure of a drive device for an electric car door, provided for an embodiment of this utility model; Figure 3 A schematic diagram of a drive device for an electric car door, provided for an embodiment of this utility model; Detailed Implementation

[0014] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0015] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Although the illustrations only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components, the shape, quantity and proportion of each component can be arbitrarily changed in actual implementation, and the layout of the components may also be more complex.

[0016] like Figure 2-3 As shown, on one hand, this utility model provides a drive device for electric car doors, which includes: Drive unit 1 generates a first driving force under the action of driving electrical energy. This driving electrical energy is used to both drive drive unit 1 and unlock processing unit 2. Schematic, when the drive device is not powered on, processing unit 2 is in a locked state; conversely, when the drive device based on the electric door opening mechanism is powered on, the driving electrical energy acts on drive unit 1 to generate the first driving force, and simultaneously unlocks processing unit 2. The drive unit can be formed by a brushless motor.

[0017] Indicatively, the first driving force can be a clockwise rotating driving force or a counterclockwise rotating driving force. For example, a clockwise rotating driving force is formed under the action of positive driving electrical energy, and a counterclockwise rotating driving force is formed under the action of reverse driving electrical energy. Positive driving electrical energy or reverse driving electrical energy can be obtained by changing the current direction of the driving electrical energy. This technology is common knowledge to those skilled in the art, and will not be described in detail here.

[0018] Processing unit 2, connected to driving unit 1, receives the first driving force and processes it to form a basic transmission force output. Indicatively, the first driving force moves at a relatively high speed, and processing unit 2 aims to decelerate it so that the basic transmission force matches the subsequent transmission unit 3. Indicatively, the rotation direction of the basic transmission force is synchronized with the rotation direction of the first driving force.

[0019] It should be noted that the unlocking can be achieved simply by powering on the processing unit 2, regardless of the direction of the driving electrical energy.

[0020] Transmission unit 3, connected to processing unit 2, is used to receive the basic transmission force and generate a transmission force output based on the basic transmission force; wherein the transmission unit 3 includes, The first transmission wheel 31 is connected to the output end of the second processing unit 2. Second drive wheel 32; A transmission belt 33 engages with the first transmission wheel 31 and the second transmission wheel 32. The first transmission wheel 31 rotates under the action of the basic transmission force and drives the transmission belt 33 to move. During the movement of the transmission belt 33, the second transmission wheel 32 moves to form the transmission force output.

[0021] An execution unit 4, connected to the transmission unit 3, receives the transmission force and controls an execution crank 41 to perform an action matching the transmission force under the action of the transmission force. Schematic, when the first driving force is in a clockwise direction, the execution crank 41 moves away from the drive device; when the first driving force is in a clockwise direction, the execution crank 41 moves towards the drive device.

[0022] Here is a specific working method: The drive unit is applied to an automobile. Schematic, the other end of the actuating crank 41 is connected to the automobile door. When the actuating crank 41 moves away from the drive unit, the door moves away from the vehicle body, i.e., the door is in the open state. When the actuating crank 41 moves towards the drive unit, the door moves towards the vehicle body, i.e., the door is in the closed state. The movement of the drive unit achieves the opening and closing operations of the door.

[0023] Specifically: Taking a clockwise direction as the first driving force as an example, when the drive device based on the electric car door is energized, the driving energy acts on the drive unit 1 to form a first driving force, wherein the direction of the first driving force is clockwise. Simultaneously, this driving energy performs an unlocking process on the processing unit 2. The processing unit 2, in the unlocked state, receives the first driving force and forms a clockwise basic transmission force output based on the first driving force. The transmission unit 3 receives the clockwise basic transmission force and forms a clockwise transmission force output based on the basic transmission force. The execution unit 4 receives the clockwise transmission force, and under the action of the transmission force, the execution crank 41 moves towards the vehicle body until the door is completely closed. Conversely, when the first driving force is counterclockwise, the execution crank 41 moves away from the vehicle body until the door is completely open.

[0024] It should be noted that, in practice, the first driving force can also be defined as being in a counterclockwise direction, in which the actuator 41 moves towards the vehicle body until the door is completely closed, and in which the first driving force is being in a clockwise direction, the actuator 41 moves away from the vehicle body until the door is completely open.

[0025] In this utility model, the transmission unit adopts a synchronous belt drive, that is, it uses a first transmission wheel and a second transmission wheel, and a transmission belt to realize the transmission of driving force. During the installation process, only the first transmission wheel and the second transmission wheel need to be installed, and the installation process is simple. In addition, compared with the parallel gear set transmission, the synchronous belt drive has a relatively stable force, a long service life, and the center distance requirement of the first transmission wheel and the second transmission wheel is more relaxed than that of the parallel transmission. It also does not have the high requirements for gear precision in the parallel transmission.

[0026] As a further preferred embodiment, in the above-mentioned drive device based on an electric car door, the processing unit 2 includes: A first processing device 21, the input end of which is connected to the output end of the drive unit 1, is used to receive the first driving force and convert the first driving force to form a first source power; further, the first processing device 21 is formed by a planetary gear set, and the output end of the drive unit 1 is connected to the sun gear of the planetary gear set; The second processing device 22 is connected to the output of the first processing device 21. When the second processing device 22 is in the unlocked state, it generates the basic transmission force based on the first source power. Further, the second processing device 22 comprises an electromagnetic damper. One end of the electromagnetic damper's shaft is connected to the sun gear of the planetary gear set, and the other end is connected to the transmission unit 3. In the door opening / closing state, to prevent excessively fast opening / closing speeds, the electromagnetic damper decelerates the first source power, reducing the door opening / closing speed. When the vehicle door is open, it maintains its open state on a slope, preventing it from automatically closing due to gravity when it should be open and there is no human intervention. When external force is detected intervening in the door opening or closing, the electromagnetic damper unlocks, assisting in opening or closing the door, making the operation easier.

[0027] As a further preferred embodiment, the above-mentioned drive device based on electric car door opening further includes a first housing 5 for accommodating the drive unit 1 and the processing unit 2. The first housing 5 has a first through hole 51 and a second through hole 52 at its end. The output end of the processing unit passes through the first through hole 51 and the second through hole 52 to connect to the transmission unit.

[0028] As a further preferred embodiment, the aforementioned drive device based on an electric car door further includes a second housing 6. The second housing 6 accommodates the first drive wheel 31, the second drive wheel 32, and the drive belt 33. The second housing 6 is provided with a first transmission frame 61 for fixing the first drive wheel 31 and a second transmission frame 62 for fixing the second drive wheel 32. The first transmission frame 61 and the second transmission frame 62 fix the first drive wheel 31 and the second drive wheel 32, reducing displacement during movement. Simultaneously, they indirectly tension the drive belt, reducing noise generated during transmission, ensuring that the noise generated during its movement is less than that generated by a parallel transmission device. Furthermore, in this application, the first drive wheel, the second drive wheel, and the drive belt are in complete contact, with a relatively large contact area, ensuring balanced force on the gears of the drive wheels and the transmission teeth of the drive belt, thus extending the service life of the drive wheels and the drive belt.

[0029] As a further preferred embodiment, in the above-mentioned drive device based on an electric car door, the execution unit 4 is connected to the transmission unit 3 to receive the transmission force, and under the action of the transmission force, controls an execution crank 41 to perform an action matched to the transmission force, specifically including: A first lead screw 42 is fixedly connected to the second transmission wheel 32; the first lead screw 42 is driven to rotate when the second transmission wheel 32 is working. A lead screw nut 43 is fitted onto the first lead screw 42 and fixedly connected to the actuating crank 41. During the rotation of the first lead screw 42, the lead screw nut 43 is displaced along the first lead screw 42, causing the actuating crank 41 to perform an action matching the transmission force. Schematically, the first lead screw 42 is connected to the second transmission wheel 32 through the second through hole 52 and the second transmission frame 62, and the first lead screw 42 and the second transmission wheel 32 are rigidly connected.

[0030] As a further preferred embodiment, the above-mentioned drive device based on electric car door opening is characterized in that it further includes a third housing 7, which houses the first lead screw 42, the lead screw nut 43 and the actuating crank 41.

[0031] The first lead screw and the lead screw nut form a lead screw pair to convert rotational motion into linear motion, thereby driving the actuator crank 41 to move and realize the opening or closing of the door. The third housing 7 provides a limiting treatment for the lead screw nut to ensure that the lead screw nut moves smoothly within the third housing 7. Example

[0032] An automobile includes any of the drive devices based on electric door opening as described in Embodiment 1 above, wherein the automobile door body is connected to the actuating crank.

[0033] List a specific implementation method The above-mentioned automobile, taking the clockwise rotation of the lead screw nut towards the drive unit or transmission unit as an example, with the first driving force being clockwise, works as follows: When the drive device based on the electric car door is energized, the driving energy acts on the drive unit 1 to form a first driving force, wherein the direction of the first driving force is clockwise. Simultaneously, the driving energy unlocks the second processing device. When the second processing device is unlocked, the clockwise first driving force undergoes a first deceleration process through the first outlet device, and then a second deceleration process through the second processing device to form a basic transmission force output. This basic transmission force is transmitted to the first transmission wheel, which rotates clockwise. During this clockwise rotation, the first transmission wheel drives the transmission belt meshing with it to rotate clockwise. The transmission belt then continues to drive the second transmission wheel to rotate clockwise. During the rotation of the second transmission wheel, the first lead screw rotates clockwise. Since the lead screw nut is fitted onto the first lead screw, the lead screw nut is passively displaced during the rotation of the first lead screw, causing the actuator crank to move towards the drive unit. The actuator crank then moves the car door closer to the car body to close the car door. Conversely, when the first driving force is counterclockwise, the crank moves away from the vehicle body until the door is fully opened.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, the embodiments described are merely examples for ease of explanation and are not intended to limit the present invention. Those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of protection claimed by the present invention should be determined by the claims.

Claims

1. A drive device for electric car door opening, characterized in that, include: The drive unit generates the first driving force under the action of driving electrical energy; A processing unit, connected to the driving unit, is used to receive the first driving force and process the first driving force to form a basic transmission force output. A transmission unit, connected to the processing unit, is used to receive the basic transmission force and generate a transmission force output based on the basic transmission force. An execution unit, connected to the transmission unit, is used to receive the transmission force and, under the action of the transmission force, control an execution crank to perform an action matching the transmission force. The transmission unit includes, The first transmission wheel is connected to the output end of the processing unit; Second drive wheel; A transmission belt engages with a first transmission wheel and a second transmission wheel. The first transmission wheel rotates under the action of the basic transmission force and drives the transmission belt to move. During the movement of the transmission belt, the second transmission wheel moves to generate the transmission force output.

2. The drive device for electric car door opening according to claim 1, characterized in that, The processing unit includes: A first processing device, wherein the input end of the first processing device is connected to the output end of the driving unit, is used to receive the first driving force and perform conversion processing on the first driving force to form a first source power. The second processing device is connected to the output end of the first processing device. When the second processing device is in the unlocked state, it generates the basic transmission force based on the first source power and outputs it to the first transmission wheel.

3. A drive device for electric car door opening according to claim 2, characterized in that, The first processing device is formed by a planetary gear set, and the output end of the drive unit is connected to the sun gear of the planetary gear set.

4. A drive device for electric car door opening according to claim 3, characterized in that, The second processing device consists of an electromagnetic damper, one end of which is connected to the sun gear of the planetary gear set, and the other end of which is connected to the first transmission wheel.

5. A drive device for electric car door opening according to claim 1, characterized in that, It also includes a first housing for accommodating the drive unit and the processing unit. The first housing has a first through hole and a second through hole at its end. The output end of the processing unit passes through the first through hole and connects to the transmission unit.

6. A drive device for electric car door opening according to claim 1, characterized in that, It also includes a second housing for accommodating the first drive wheel, the second drive wheel, and the drive belt, wherein the second housing is provided with a first drive frame for fixing the first drive wheel and a second drive frame for fixing the second drive wheel.

7. A drive device for electric car door opening according to claim 5, characterized in that, The execution unit specifically includes: A first lead screw is fixedly connected to a second transmission wheel; the first lead screw is driven to rotate when the second transmission wheel is in operation. A lead screw nut is fitted onto the first lead screw and fixedly connected to the actuator crank. During the rotation of the first lead screw, the lead screw nut is displaced along the first lead screw so that the actuator crank performs an action that matches the power transmission.

8. A drive device for electric car door opening according to claim 7, characterized in that, It also includes a third housing that houses the first lead screw, the lead screw nut, and the actuator crank.

9. A car, characterized in that, The invention includes a drive device for electric opening of a car door as described in any one of claims 1 to 8, wherein the actuating crank is connected to the car door body.

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