TWM578254U - Electric thrust system for vehicle door and electric thrust device thereof - Google Patents

Abstract

The present invention relates to an electric thrust system for a vehicle door and an electric thrust device thereof, wherein the system comprises a controller, a sensor and an electric thrust device, and the electric thrust device comprises a cylinder block, a thrust component and a magnetorheological The fluid, the cylinder body has a cavity, the thrust assembly comprises a piston, a thrust rod and a coil, the piston is movably disposed inside the cavity, one end of the thrust rod is connected to the piston, and the other end is inserted out of the cylinder body, and the coil is wound The piston is formed inside the cylinder, the piston is provided with a through hole, and the magnetorheological fluid is filled in the cavity; wherein the sensor detects the moving object and generates a feedback signal to the controller, and the controller Control the actuation of the electric thrust device. Thereby, the opening of the door can be restricted in an active manner.

Description

Electric thrust system for door and electric thrust device thereof

The present invention relates to a thrust technology for an automobile door, and more particularly to an electric thrust system for a vehicle door and an electric thrust device thereof.

As the number of cars continues to increase, and the existing roads have not been reciprocated, various traffic accidents can be said to be endless. Among them, motorcycles that have not been noticed by the rear of the car door have been caused. Casualties are more frequent.

Although some operators develop various prompts or warning devices, such as using a photographic lens, or with warning sounds to remind drivers or passengers, it is often the case that the driver or passenger neglects the image or warning sound of the photographic lens when opening the door. Pushing the door of the car, causing the car accident caused by the reaction of the rear car, and for the taxi driver, it is even more difficult to control the passenger or the child to get off the car and immediately open the car door. Currently, there is a design to control the opening of the car door, but The structure is complex, costly, and has not been practically applied to automobiles due to the testing phase.

In view of this, the novel creator is aiming at solving the above problems by focusing on the lack of the above-mentioned prior art, and concentrating on the research and using the theory, that is, the goal of the improvement of the novel creator.

An object of the present invention is to provide an electric thrust system for a vehicle door, which is capable of restricting the opening of the door in an active manner through the mutual cooperation of the constituent elements, thereby reducing the occurrence of traffic accidents.

In order to achieve the above object, the present invention provides an electric thrust system for a vehicle door, comprising a controller, a sensor and an electric thrust device, the sensor being electrically connected to the controller; The push device is electrically connected to the controller, the electric thrust device includes a cylinder, a thrust assembly and a magnetorheological fluid, the cylinder has a cavity, and the thrust assembly comprises a piston and a thrust rod And a coil, the piston is movably disposed inside the cavity, one end of the thrust rod is connected to the piston, and the other end is passed out of the cylinder, and the coil is wound around the piston and formed in the cylinder Internally, the piston is provided with at least a uniform perforation, and the magnetorheological flow conversion system is filled in the cavity; wherein the sensor detects a moving object and generates a feedback signal to the controller, and The controller controls the actuation of the electric thrust device.

Another object of the present invention is to provide an electric thrust device which is not only simple in structure, easy to install, and quick in response.

In order to achieve the above other object, the present invention provides an electric thrust device including a cylinder, a thrust assembly and a magnetorheological fluid, the cylinder having a cavity; the thrust assembly including a piston, a push rod and a coil, the piston is movably disposed inside the cavity, one end of the thrust rod is connected to the piston, and the other end is passed outside the cylinder, and the coil is wound around the piston Formed inside the cylinder, the piston is open with at least a uniform perforation; the magnetorheological flow system is filled in the cavity.

The present invention also has the following effects. By placing the coil inside the cylinder, the overall volume is greatly reduced, thereby increasing the field of use and range of the electric thrust device. With the setting of the position sensing unit, precise control of the position of the piston can be achieved.

The detailed description and technical content of the present invention are set forth below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 3 , the present invention provides an electric thrust system for a vehicle door and an electric thrust device thereof, wherein the electric thrust system for the vehicle door mainly includes a controller 10 and a sensor 20 . And an electric thrust device 30.

The controller 10 is an ECU (Electronic Control Unit) electronic control unit, also called "driving computer", "on-board computer", etc., which is information of various states collected by the sensor 20, and is transmitted to the line responsible for transmission to ECU. After the ECU receives these signals, it analyzes the various signals, and then knows what state each component is in, how it works, and then automatically calculates it according to the program written in advance. In this state, it should be Which executors do what, then send the instructions to the executor, and the command executor works.

The sensor 20 is electrically connected to the controller 10 described above, and may be an infrared radar, an ultrasonic radar, a millimeter wave radar, a laser radar, an image sensor or a combination thereof.

The electric thrust device 30 is electrically connected to the controller 10, and mainly includes a cylinder block 31, a thrust assembly 32 and a magnetorheological fluid 33. The cylinder block 31 has a substantially cylindrical shape, but does not have such a shape. The inside of the cylinder block 31 has a cavity 311. One end of the cylinder block 31 is sealed and closed by a rear cover 312, and a fixing block 313 is connected to the outside of the rear cover 312. One end is sealed and closed by a front cover 314, and a shaft hole 315 is defined in the front cover 314.

The thrust assembly 32 includes a piston 321 , a thrust rod 322 and a coil 323 . The piston 321 is a cylinder that is movably disposed inside the cavity 311 . The piston 321 is provided with at least a consistent hole 3211 . The through hole 3211 of the present embodiment is plural, and the axial line of each of the through holes 3211 and the center line of the piston 321 are parallel to each other, and a plurality of line grooves 3212 are formed on the outer circumferential surface of the piston 321. One end of the thrust rod 322 is connected to the piston 321 , and the other end is passed out from the shaft hole 315 of the front cover 314 to the outside of the cylinder 31 . The coil 323 is surrounded by the respective line grooves 3212 of the piston 321 and formed in the cylinder 31 . internal.

The magnetorheological fluid 33 is filled in the cavity 311, and it can be used as a brake element. Please refer to FIG. 7 together. The magnetorheological fluids (MRF) are mainly composed of a carrier liquid, The magnetic particles and the surfactant are composed. When the magnetorheological fluid 33 is subjected to a magnetic field, the magnetic particles are arranged in a chain along the direction of the magnetic field, and the original Newton fluid immediately becomes a Bingham plastomer (Bingham). Plastic), its viscosity increased instantly. If the magnetic field disappears and immediately returns to the original Newtonian fluid, the response time is only a few milliseconds. The figure shows the change of coil current and fluid drop strength when the magnetorheological fluid is applied to the full magnetic field. The carrier liquid may be oil, ethylene glycol or water; the magnetic particles may be iron-containing particles having a diameter of 1 μm to 10 μm.

The electric thrust device 30 of the present invention further includes a position sensing unit 34 which is disposed on the inner wall surface of the cylinder 31 corresponding to the moving range of the piston 321 and is electrically connected to the controller 10 for detecting the piston 321 Location.

The electric thrust system for a vehicle door further includes a battery 40 electrically connected to the aforementioned controller 10 for supplying power to the controller 10, which can be turned off and the power cut off in the engine of the automobile. Thereafter, power can still be supplied to the aforementioned controller 10.

Referring to FIG. 4 to FIG. 6, it can be applied to a car 8 having a body 81 and a door 82. The sensor 20 can be mounted on the rear end of the door 82, and the controller 10 is mounted. Inside the door 82, one end of the thrust lever 322 is fixed to the vehicle body 81, and the cylinder block 31 is disposed inside the front end of the door 82 and is transmitted through the fixing block 313 to prevent the rotation of the cylinder block 31.

After the door 82 is pushed outwards in use, the sensor 20 will start detecting a moving object in the rear. The moving object may be a pedestrian, various types of vehicles (such as a car, a locomotive or a bicycle), an animal, etc. When the sensor 20 detects that there is a moving object, a feedback signal is generated to the controller 10, and the controller 10 controls the actuation of the electric thrust device 30.

The electric thrust device 30 transmits the change of the magnetic field to the coil 323 through the controller 10. When the coil 323 is a zero magnetic field, the magnetorheological fluid 33 at this time is in a low viscosity state, which is a magnetorheological change. The fluid 33 can easily flow from the respective through holes 3211, and the piston 321 can be moved in the cavity 311 to enable the door 82 to be opened (as shown in FIG. 6); conversely, when the coil 323 is a strong magnetic field. In this case, the magnetorheological fluid 33 at this time is in a high viscosity state, so that the magnetorheological fluid 33 cannot flow through the respective through holes 3211, so that the piston 321 is restricted or stopped in the cavity 311 and cannot be moved. The door 82 cannot be pushed further toward the outside.

Referring to Figure 8, the relationship between the force (resistance) and the displacement (the stroke of the thrust rod) is pushed, wherein the traditional thrust rod controls the strength of the pitch by changing the shape of the body of the thrust rod, and is used as a buffer block. As the hard stop of the mechanism, the total stroke of the thrust rod is controlled, as shown by the solid line in the figure. The electric thrust device 30 of the present invention changes the viscosity of the magnetorheological fluid 33 by increasing the current of the coil 323, so that the hydraulic mechanism generates resistance, and then the displacement gauge is used to measure the stroke of the thrust rod 322, and the power of the pitch. And the total stroke of the mechanism can be changed through control, such as the electric thrust rod (1) moving trajectory. The active current modulation can also be used to design various degrees of power, the number of degrees of pitch, and the control of the total stroke of the mechanism, and even to control the opening or closing operation of the door 82, such as the electric thrust rod in the figure. (2) Moving the trajectory.

In summary, the electric thrusting system for the vehicle door and the electric thrusting device thereof can achieve the intended purpose of use, and solve the lack of conventional knowledge, and completely meet the novelty due to the novelty and the progressiveness. The patent application requirements are filed in accordance with the Patent Law. Please check and grant the patent in this case to protect the rights of the new creator.

10‧‧‧ Controller

20‧‧‧ sensor

30‧‧‧Electric thrust device

31‧‧‧Cylinder

311‧‧‧ cavity

312‧‧‧ rear cover

313‧‧‧Fixed block

314‧‧‧ front cover

315‧‧‧ shaft hole

32‧‧‧Tap components

321‧‧‧Piston

322‧‧‧Pushing rod

323‧‧‧ coil

3211‧‧‧through holes

3212‧‧‧Round trough

33‧‧‧Magnetorheological Fluid

34‧‧‧ position sensing unit

40‧‧‧Battery

8‧‧‧Car

81‧‧‧ body

82‧‧ ‧ car door

Figure 1 is a block diagram of the novel electric thrust system for a vehicle door.

2 is an external view of the combination of the electric thrust device of the present invention.

Figure 3 is a cross-sectional view showing the combination of the electric thrust device of the present invention.

FIG. 4 is a schematic diagram of the combination of the novel electric thrust system applied to the automobile.

Fig. 5 is a cross-sectional view showing the state of use of the electric thrust device of the present invention (1).

Fig. 6 is a cross-sectional view showing the state of use of the electric thrust device of the present invention (2).

Figure 7 is a graph showing the drop strength and current of the magnetorheological fluid of the present invention.

Fig. 8 is a graph showing the resistance and displacement curves of the electric thrust device and the mechanical thrust rod of the present invention.

Claims (14)

An electric thrust system for a vehicle door, comprising:  a controller  a sensor electrically connected to the controller;  An electric thrust device electrically connected to the controller, the electric thrust device comprising a cylinder, a thrust assembly and a magnetorheological fluid, the cylinder having a cavity, the thrust assembly comprising a piston a push rod and a coil, the piston is movably disposed inside the cavity, one end of the thrust rod is connected to the piston, and the other end is passed outside the cylinder, and the coil is wound around the piston and formed Inside the cylinder, the piston is provided with at least a consistent perforation, and the magnetorheological flow system is filled in the cavity;  The sensor detects a moving object and generates a feedback signal to the controller, and the controller controls the operation of the electric thrust device.   An electric thrust system for a vehicle door according to claim 1, wherein the magnetorheological flow system functions as a brake element. The electric thrust system for a vehicle door according to claim 1, further comprising a battery electrically connected to the controller for supplying power to the controller. The electric thrust system for a vehicle door according to claim 1, wherein the electric thrust device further comprises a position sensing unit, wherein the position sensing unit is disposed on an inner wall surface of the cylinder corresponding to a moving range of the piston And electrically connected to the controller. The electric thrust system for a vehicle door according to claim 1, wherein the through holes are plural, and the axial line of each of the through holes is parallel to the center line of the piston. The electric thrust system for a vehicle door according to claim 1, wherein a plurality of capacity grooves are formed in an outer circumferential surface of the piston, the coils being wrapped in the respective line grooves of the piston. The electric thrust system for a vehicle door according to claim 1, wherein one end of the cylinder body is sealed by a rear cover, and a fixed block is connected to the rear cover, and the other end of the cylinder body is The front cover seals the cover, and the front cover defines a shaft receiving hole, and the other end of the thrust rod passes through the shaft receiving hole. The electric thrust system for a vehicle door according to claim 1, wherein the sensor is an infrared radar, an ultrasonic radar, a millimeter wave radar, a laser radar, an image sensor or a combination thereof. An electric thrust device comprising:  a cylinder having a cavity;  a thrust assembly comprising a piston, a thrust rod and a coil, the piston being movably disposed inside the cavity, the thrust rod having one end connected to the piston and the other end passing outside the cylinder The coil is wound around the piston and formed inside the cylinder, the piston being open with at least a consistent perforation;  A magnetorheological fluid is filled in the cavity.   The electric thrust device of claim 9, wherein the magnetorheological flow system functions as a brake element. The electric thrust device of claim 9, further comprising a position sensing unit disposed on an inner wall surface of the cylinder corresponding to a range of movement of the piston. The electric thrust device according to claim 9, wherein the through holes are plural, and the axial line of each of the through holes and the center line of the piston are parallel to each other. The electric thrust device according to claim 9, wherein a plurality of wire cavities are formed on an outer circumferential surface of the piston, and the coils are wound around the respective line grooves of the piston. The electric thrust device according to claim 9, wherein one end of the cylinder is sealed by a rear cover, and a fixed block is connected to the rear cover, and the other end of the cylinder is sealed by a front cover. The front cover has a shaft receiving hole, and the other end of the thrust rod passes through the shaft receiving hole.