Rearview mirror assembly following steering of vehicle

Abstract

The rearview mirror assembly is used for a semi-trailer tractor and comprises support rods which are vertically and fixedly arranged on the left side and the right side outside a vehicle head cab, rearview mirrors are arranged on the support rods and comprise lenses and rearview mirror protective covers, the rearview mirror protective covers are connected with the support rods, and rotating assemblies are arranged in the rearview mirror protective covers. The rotating assembly comprises a motor and a driving gear set, the motor drives the driving gear set to rotate, the rotating driving gear set drives the lens to rotate leftwards and rightwards, and the control circuit drives the motor to drive the left lens or the right lens to rotate leftwards and rightwards along with turning of the tractor head to face a traction carriage behind the tractor. The rear portion and wheels of the trailer are always in the view of a driver, blind area hidden dangers are reduced, the probability of scraping and collision accidents is reduced, and driving safety of the trailer is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile rear -view mirror piece, especially with vehicle steering follow -up rear -view mirror assembly. BACKGROUND

[0002] With the rapid development of modern logistics industry, as the core tool of long-distance goods transportation, the trailer plays an indispensable role in the logistics transportation network because it can carry a large amount of goods and effectively reduce transportation cost. During driving, the trailer head and the trailer are connected through a special connecting device. This structure causes a large angle between the trailer head and the trailer when turning, and the turning radius is obviously larger than that of ordinary vehicles.

[0003] In the driving safety protection system of the trailer, the rearview mirror plays a very key role. The driver mainly relies on the rearview mirror to obtain real-time information of the rear and side of the vehicle, including the driving trajectory of other vehicles, relative speed, and the activity of surrounding pedestrians, etc. These information is crucial for the driver to make accurate judgments when changing lanes, turning, reversing, and other operations, to avoid traffic accidents and ensure driving safety.

[0004] However, the traditional optical rearview mirror commonly installed on the trailer has obvious limitations. Due to the dynamic change of the angle between the trailer head and the trailer when turning, the traditional rearview mirror is limited by the fixed installation position and limited field of view, and cannot timely and comprehensively cover all areas around the vehicle. There is a large area of visual blind area in the rearview mirror, and the driver cannot see the rear wheels of the trailer and the inside and outside of the trailer. According to the investigation, about 53% of trailer accidents are caused by the rearview mirror angle blind area. Although the number of rearview mirror pieces is increased and the angle of the rearview mirror piece is changed to try to avoid the visual blind area, because the towing head and the trailer of the towing vehicle are not on the same straight line when turning, and the turning angle is slightly larger, the rear wheels of the trailer cannot be observed, which leads to serious traffic accidents. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, the utility model provides a rearview mirror assembly with vehicle steering follow-up. When the vehicle turns, the rearview mirror piece adjusts with the change of the vehicle turning angle, ensuring that the rear of the trailer, especially the wheel part, is always within the driver's field of view.

[0006] The purpose of the utility model is achieved as follows:

[0007] A rearview mirror assembly that moves with the vehicle's steering for a semi-trailer tractor includes vertically fixed support rods on the left and right sides outside the cab of the tractor. A rearview mirror is mounted on each support rod, and each rearview mirror includes a lens and a mirror cover. The mirror cover is connected to the support rod. A rotating assembly is disposed within the mirror cover. The rotating assembly includes a motor and a drive gear set. The motor drives the drive gear set to rotate, and the rotating drive gear set causes the lens to rotate left and right. A control circuit drives the motor to rotate the left or right lens as the tractor turns, facing the tractor compartment behind the tractor.

[0008] Furthermore, the drive gear set includes a worm gear and a worm that mesh with each other. The worm gear is a sector gear fixed on a rotating shaft. The rotating shaft is rotatably fixed in the rearview mirror cover via upper and lower bearings. The mirror is fixedly connected to the rotating shaft. The motor is fixed inside the rearview mirror cover. The motor shaft is connected to the worm through a reducer. The worm is driven to rotate by the motor, which in turn drives the rotating shaft to rotate through the worm gear, thereby causing the mirror to rotate left and right.

[0009] Furthermore, the drive gear set includes a meshing worm gear and a worm. The worm gear is a sector gear fixed on the support rod. Bearings are respectively provided at the top and bottom of the support rod. The lens is embedded in the rearview mirror cover. The rearview mirror cover is rotatably connected and fixed to the support rod through the upper and lower bearings. The motor is fixed in the rearview mirror cover. The motor shaft is connected to the worm through a reducer. The worm is driven to rotate by the motor. Since the worm gear is fixed on the support rod and does not move, the worm drives the rearview mirror cover to rotate left and right around the support rod, thereby driving the lens to rotate left and right.

[0010] Furthermore, the control circuit includes an angle sensor, a microprocessor controller, and two drive circuits. The two drive circuits are respectively connected to a drive power supply. One drive circuit is used to drive the left-side rearview mirror outside the driver's cab, and the other drive circuit is used to drive the right-side rearview mirror outside the driver's cab. The angle sensor is connected to a wireless signal transmitter and is mounted on the steering wheel in the driver's cab. The signal output of the angle sensor is connected to the signal input of the microprocessor controller through the wireless signal transmitter and wireless signal receiver. The microprocessor controller has two signal outputs. One signal output controls the drive circuit connected to the left-side rearview mirror, and the other signal output controls the drive circuit connected to the right-side rearview mirror. The microprocessor controller selects to control the drive circuit of the left-side rearview mirror when the steering wheel turns left, and selects to control the drive circuit of the right-side rearview mirror when the steering wheel turns right, starting from a 0-degree steering wheel turn.

[0011] Furthermore, the drive circuit is a double-pole triple-throw electric switch. The two common terminals of the double-pole triple-throw electric switch are connected to the motor, and the two pairs of throw points of the double-pole triple-throw electric switch are connected to the drive power supply with opposite polarities. The other pair of throw points is left floating. The positive or negative output of the two common terminals connected to the drive power supply forms the forward or reverse control of the motor, or the motor is left floating with no power output. Thus, when the rotation angle increases, the motor is controlled to rotate forward; when the rotation angle decreases, the motor is controlled to rotate in reverse; and when the rotation angle remains unchanged, the motor does not rotate.

[0012] Furthermore, the control circuit includes an automatic / manual switching switch between the microprocessor controller and the two drive circuits.

[0013] The beneficial effects of this utility model are as follows: A rearview mirror assembly that moves with the vehicle's steering automatically adjusts the mirror lens according to the steering angle when the vehicle turns, ensuring that the rear of the trailer and its wheels are always in the driver's field of vision. This significantly reduces blind spot hazards, lowers the probability of scratches and collisions, and ensures the safety of the trailer. Operationally, the driver does not need to manually adjust the mirror frequently, making driving easier and smoother. At the same time, it improves the efficiency of trailer driving, reduces unnecessary deceleration and stopping caused by blind spot concerns, enhances the timeliness of logistics transportation, and highlights the important role of trailers in the logistics industry.

[0014] The present invention will be further explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation position of the rearview mirror of this utility model;

[0016] Figure 2 This is a schematic diagram of the control circuit of this utility model;

[0017] Figure 3 This is a schematic diagram of the rearview mirror after assembly according to Embodiment 1 of this utility model;

[0018] Figure 4 This is an exploded view of the rearview mirror in Embodiment 1 of this utility model;

[0019] Figure 5 This is a schematic diagram of the rearview mirror after assembly according to Embodiment 2 of this utility model;

[0020] Figure 6 This is an exploded view of the rearview mirror in Embodiment 2 of this utility model.

[0021] In the diagram: 1. Cabin, 2. Support rod, 3. Rearview mirror, 301. Lens, 302. Rearview mirror cover, 302-1. Outer shell, 302-2. Inner shell, 303. Rotating shaft, 4. Motor, 5. Worm gear, 6. Control circuit, 601. Angle sensor, 602. Microprocessor controller, 603. Drive circuit, 604. Automatic and manual switch, 605. Wireless signal transmitter, 606. Wireless signal receiver, 7. Traction box, 8. Worm gear, 9. Bearing, 10. Drive power supply, 11. First connector, 12. Second connector. Detailed Implementation

[0022] Example 1:

[0023] A rearview mirror assembly that moves with the vehicle's steering, for use in a semi-trailer tractor, such as... Figures 1 to 6 As shown, the vehicle includes support rods 2 vertically fixed on the left and right sides of the cab 1 at the front of the vehicle. Rearview mirrors 3 are mounted on the support rods 2. Each rearview mirror 3 includes a lens 301 and a rearview mirror cover 302. The rearview mirror cover 302 is bolted to the support rods 2 via a first connector 11. A rotating assembly is located within the rearview mirror cover 302. This rotating assembly includes a motor 4 and a drive gear set. The motor 4 drives the drive gear set to rotate, which in turn causes the lens 301 to rotate left or right. The control circuit 6 drives the motor 4 to rotate the left or right lens 301 as the vehicle turns, facing the trailer trailer 7 behind the tractor unit, ensuring that the rear of the trailer, especially the wheel area, is always within the driver's field of vision.

[0024] like Figure 3 and Figure 4 As shown, the drive gear set includes a worm gear 8 and a worm 5 meshing with each other. The worm gear 8 is a sector gear fixed on a rotating shaft 303. Bearings 9 are provided at the upper and lower ends of the rotating shaft 303. The bearings 9 are rotatably fixed in the rearview mirror cover 302. The rearview mirror cover 302 has a circular groove that matches the outer diameter of the outer ring of the bearing 9. The lens 301 is fixedly connected to the rotating shaft 303 with bolts through a second connector 12. The worm 5 is rotatably fixed on the rearview mirror cover 302. A motor mounting groove is provided on the rearview mirror cover 302. The motor 4 is fixedly installed in the groove. The shaft of the motor 4 is connected to the worm 5 through a reducer. The worm 5 is driven to rotate by the motor 4, which drives the rotating shaft 303 to rotate through the worm gear 8, thereby driving the lens 301 to rotate left and right.

[0025] like Figure 2As shown, the control circuit 6 includes an angle sensor 601, a microprocessor controller 602, and two drive circuits 603. The two drive circuits 603 are respectively connected to the drive power supply 10. One drive circuit is used to drive the left-side rearview mirror outside the cab 1, and the other drive circuit is used to drive the right-side rearview mirror outside the cab 1. The angle sensor 601 is connected to a wireless signal transmitter 605 and is mounted on the steering wheel. The signal output of the angle sensor 601 is connected to the signal input of the microprocessor controller 602 through the wireless signal transmitter 605 and the wireless signal receiver 606. The microprocessor controller 602 has two signal outputs. One signal output controls the drive circuit connected to the left-side rearview mirror, and the other signal output controls the drive circuit connected to the right-side rearview mirror. The microprocessor controller 602 selects to control the drive circuit of the left-side rearview mirror when the steering wheel turns left, and selects to control the drive circuit of the right-side rearview mirror when the steering wheel turns right, starting from a steering wheel "0" degree turn.

[0026] The drive circuit 603 is a double-pole triple-throw electric switch. Its two common terminals are connected to the motor 4 of the rotating component in the rearview mirror 3. The two pairs of throw points of the double-pole triple-throw electric switch are connected to the drive power supply 10 with opposite polarities, and the other pair of throw points are left floating (not shown). The positive or negative output of the two common terminals connected to the drive power supply 10 forms the forward or reverse rotation control of the motor 4, or it is left floating with no power output. Thus, when the rotation angle increases, the motor 4 is controlled to rotate forward; when the rotation angle decreases, the motor 4 is controlled to rotate in reverse; when the rotation angle remains unchanged, the motor 4 does not rotate.

[0027] The control circuit 6 has an automatic and manual switch 604 between the microprocessor controller 602 and the two drive circuits 603. When the switch is switched to manual mode, the control circuit 6 does not automatically adjust the rearview mirror. A manual control button (not shown) is provided in the drive circuit 603.

[0028] The angle sensor 601 can be a standard product that can be purchased directly from the market, or a potentiometer with multiple turns of wire can be used as the angle sensor. The two ends of the potentiometer are connected to the positive and negative terminals of the power supply. The adjustment knob of the potentiometer is connected to the steering wheel shaft and rotates with the steering wheel. The adjustable rotation point of the potentiometer outputs a signal. When the steering wheel is at "0" degrees, the potentiometer outputs the intermediate voltage of the power supply. With the intermediate voltage as the reference point, if the output voltage is higher than the reference point, the steering wheel is turned in one direction, and if the output voltage is lower than the reference point, the steering wheel is turned in the other direction.

[0029] Example 2:

[0030] This embodiment is another implementation of Example 1. In Example 1, the rearview mirror cover 302 is fixedly connected to the support rod 2, and only the lens 301 is driven by the motor 4 to adjust the angle. In this embodiment, the lens 301 and the rearview mirror cover 302 as a whole are driven by the motor 4 to adjust the angle, and the beneficial effects are the same as those in Example 1.

[0031] This embodiment discloses a rearview mirror assembly that moves with the vehicle's steering, used in a semi-trailer tractor. It includes support rods 2 vertically fixed to the left and right sides of the cab 1 at the front of the tractor. A rearview mirror 3 is mounted on the support rods 2. The rearview mirror 3 includes a lens 301 and a rearview mirror cover 302. The rearview mirror cover 302 includes an outer shell 302-1 and an inner shell 302-2. The lens 301 is installed inside the inner shell 302-2 via a snap-fit. The rearview mirror cover 302 is rotatably connected to the support rods 2 via bearings 9. A rotating assembly is disposed within the rearview mirror cover 302. The rotating assembly includes a motor 4 and a drive gear set. The motor 4 drives the drive gear set to rotate, which in turn rotates the entire rearview mirror 3 left and right. The control circuit 6 drives the motor 4 to rotate the rearview mirror 3 in the same way as in Embodiment 1.

[0032] like Figure 5 and Figure 6 As shown, the drive gear set includes a worm gear 8 and a worm 5 that mesh with each other. The worm gear 8 is a sector gear fixed on the support rod 2. Bearings 9 are respectively provided at the top and bottom of the support rod 2, dividing the rearview mirror cover 302 into an outer shell 302-1 and an inner shell 302-2. The outer shell 302-1 and the inner shell 302-2 are respectively provided with inner diameters and bearings 9. A semi-circular groove matching the outer diameter of the outer ring is provided, and screw holes are respectively provided at corresponding positions on the outer shell 302-1 and the inner shell 302-2. The semi-circular grooves of the two are tightly engaged on the outer ring of the bearing 9 by screws. The rearview mirror cover 302 can rotate around the support rod 2 through the upper and lower bearings 9. A motor mounting groove is provided on the outer shell 302-1, and the motor 4 is fixedly installed in the groove. The worm gear 5 is rotatably fixed on the outer shell 302-1. The rotating shaft of the motor 4 is connected to the worm gear 5 through a reducer. The worm gear 5 is driven to rotate by the motor 4. Since the worm wheel 8 is fixed on the support rod 2, the worm gear 5 drives the rearview mirror cover 302 to rotate left and right around the support rod 2, thereby driving the lens 301 to rotate left and right.

[0033] Finally, it should be noted that the above is only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the preferred arrangement, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model.

Claims

1. A rearview mirror assembly that moves with the steering of a vehicle, used in a semi-trailer tractor, comprising support rods (2) vertically fixed on the left and right sides outside the cab (1) of the tractor, a rearview mirror (3) being mounted on the support rods (2), the rearview mirror (3) comprising a lens (301) and a rearview mirror cover (302), the rearview mirror cover (302) being connected to the support rods (2), characterized in that, A rotating assembly is installed in the rearview mirror cover (302). The rotating assembly includes a motor (4) and a drive gear set. The motor (4) drives the drive gear set to rotate. The rotating drive gear set drives the mirror (301) to rotate left and right. A control circuit (6) drives the motor (4) to drive the left or right mirror (301) to rotate left and right towards the tractor compartment (7) behind the tractor as the front of the vehicle turns.

2. The rearview mirror assembly that moves with vehicle steering according to claim 1, characterized in that, The drive gear set includes a worm gear (8) and a worm (5) that mesh with each other. The worm gear (8) is a sector gear fixed on a rotating shaft (303). The rotating shaft (303) is rotatably fixed in the rearview mirror cover (302) through upper and lower bearings (9) provided on the rotating shaft (303). The lens (301) is fixedly connected to the rotating shaft (303). The motor (4) is fixed inside the rearview mirror cover (302). The rotating shaft of the motor (4) is connected to the worm (5) through a reducer. The worm (5) is driven to rotate by the motor (4) and drives the rotating shaft (303) to rotate through the worm gear (8), thereby driving the lens (301) to rotate left and right.

3. The rearview mirror assembly that moves with vehicle steering according to claim 1, characterized in that, The drive gear set includes a worm gear (8) and a worm (5) that mesh with each other. The worm gear (8) is a sector gear fixed on the support rod (2). The support rod (2) is provided with bearings (9) at the top and bottom respectively. The lens (301) is embedded in the rearview mirror cover (302). The rearview mirror cover (302) is rotatably connected and fixed to the support rod (2) through the upper and lower bearings (9). The motor (4) is fixed in the rearview mirror cover (302). The motor (4) shaft is connected to the worm (5) through a reducer. The worm (5) is driven to rotate by the motor (4). Since the worm gear (8) is fixed on the support rod (2) and does not move, the worm (5) drives the rearview mirror cover (302) to rotate left and right around the support rod (2), thereby driving the lens (301) to rotate left and right.

4. The rearview mirror assembly that moves with vehicle steering according to claim 1, characterized in that, The control circuit (6) includes an angle sensor (601), a microprocessor controller (602), and two drive circuits (603). The two drive circuits (603) are connected to the drive power supply (10). One of the drive circuits (603) is used to drive the left rearview mirror outside the cab (1), and the other drive circuit is used to drive the right rearview mirror outside the cab. The angle sensor (601) is connected to a wireless signal transmitter (605) which is set on the steering wheel in the cab (1). The signal output of the angle sensor (601) is connected to the signal input of the microprocessor controller (602) through the wireless signal transmitter (605) and the wireless signal receiver (606). The microprocessor controller (602) has two signal outputs. One signal output controls the drive circuit connected to the left rearview mirror, and the other signal output controls the drive circuit connected to the right rearview mirror. The microprocessor controller (602) selects to control the drive circuit of the left rearview mirror when the steering wheel turns to the left and selects to control the drive circuit of the right rearview mirror when the steering wheel turns to the right, starting from the steering wheel turning "0" degrees.

5. The rearview mirror assembly that moves with vehicle steering according to claim 4, characterized in that, The drive circuit (603) is a double-pole triple-throw electric switch. The two common terminals of the double-pole triple-throw electric switch are connected to the motor (4). The two pairs of throw points of the double-pole triple-throw electric switch are connected to the drive power supply (10) with opposite polarities. The other pair of throw points is left floating. The positive or negative output of the two common terminals connected to the drive power supply (10) forms the forward or reverse control of the motor (4). Alternatively, the motor (4) can be left floating with no power output. Thus, when the rotation angle increases, the motor (4) is controlled to rotate forward. When the rotation angle decreases, the motor (4) is controlled to rotate in reverse. When the rotation angle remains unchanged, the motor (4) does not rotate.

6. The rearview mirror assembly that moves with vehicle steering according to claim 4, characterized in that, The control circuit (6) has an automatic and manual switching switch (604) between the microprocessor controller (602) and the two drive circuits (603).

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