Rearview mirror for rail transit vehicle

Abstract

The utility model discloses a rearview mirror for a rail transit vehicle, which comprises an upper fixing seat, a lower fixing seat and a mirror box, a lens is mounted in front of the mirror box, a rotating shaft is fixedly mounted on one side of the mirror box, one end of the rotating shaft is rotatably connected with the upper fixing seat, the other end of the rotating shaft is rotatably connected with the lower fixing seat, and an output shaft of a first driving motor is in transmission connection with the rotating shaft. Under the driving of the first driving motor, the mirror box rotates forwards or reversely, so that the rearview mirror is opened or closed; a locking fixing clamp is fixedly mounted on the rotating shaft, a locking pin shaft is mounted on the upper fixing seat or the lower fixing seat, a lock hole is formed in the locking fixing clamp, one end of the locking pin shaft is in transmission connection with an output shaft of the second driving motor, and the other end of the locking pin shaft is inserted into or withdrawn from the lock hole under the driving of the second driving motor; and when the locking pin shaft retreats from the lock hole, the rearview mirror is unlocked.

Description

Technical Field

[0001] This utility model relates to rail transit vehicles, specifically to a rearview mirror for rail transit vehicles. Background Technology

[0002] When a rail transit vehicle is in operation, the driver needs to observe the rear view of the train, especially in the platform area. Sufficient rear visibility is necessary to ensure the safety of passengers boarding and alighting the vehicle and to prevent accidents.

[0003] Chinese patent CN111845567A discloses a manually adjustable rearview mirror device for locomotives and rolling stock, comprising a mirror frame, a mirror body, an upper bracket assembly, and a lower bracket assembly. The mirror body is embedded in the mirror frame. The mirror frame has pivots at both ends, and both ends are rotatably connected to the vehicle body via the upper and lower bracket assemblies, respectively. A clamping mechanism is connected to the lower bracket assembly. By operating the handle of the clamping mechanism, the opening angle and locking of the rearview mirror can be quickly adjusted. Opening the handle allows for easy adjustment of the mirror's opening angle, while closing the handle quickly locks the mirror frame pivots. Adjusting the locking nut allows for rapid adjustment of the clamping force. Clearly, manually controlling the opening, closing, and locking of the rearview mirror is inconvenient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rearview mirror for rail transit vehicles that can automatically open and close and can be locked, addressing the shortcomings of existing rail vehicle rearview mirrors that cannot automatically open and close.

[0005] This invention provides a functionally integrated rearview mirror that automatically opens and closes based on the vehicle's parking or driving status, and automatically locks when closed. It also features obstacle detection, video recording, and storage capabilities.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A rearview mirror for rail transit vehicles includes an upper mounting base, a lower mounting base, and a mirror housing. A lens is mounted on the front of the mirror housing. Its structural features are as follows:

[0008] It also includes a first drive motor and a second drive motor;

[0009] A rotating shaft is fixedly installed on one side of the mirror box. One end of the rotating shaft is rotatably connected to the upper fixed seat, and the other end is rotatably connected to the lower fixed seat. The output shaft of the first drive motor is connected to the rotating shaft. Under the drive of the first drive motor, the mirror box rotates forward or backward to open or close the rearview mirror.

[0010] A locking clip is fixedly installed on the rotating shaft, and a locking pin is installed on the upper or lower fixed seat. The locking clip has a locking hole. One end of the locking pin is connected to the output shaft of the second drive motor. Under the drive of the second drive motor, the other end of the locking pin is inserted into or withdrawn from the locking hole. When the locking pin is inserted into the locking hole, the rearview mirror is locked. When the locking pin is withdrawn from the locking hole, the rearview mirror is unlocked.

[0011] This invention, by setting a first drive motor for opening or closing the rearview mirror and a second drive motor for locking the rearview mirror, enables the rearview mirror to not only open or close automatically via the first drive motor and the rotating shaft, but also to connect the locking pin to the locking fixing clip via the second drive motor, so that the rearview mirror can remain locked during train travel, preventing the rearview mirror from affecting the vehicle clearance.

[0012] Furthermore, a camera is installed on the lens to facilitate data recording of the rear view observed by the rearview mirror.

[0013] Furthermore, a third drive motor is installed inside the lens case, and the third drive motor drives the lens to rotate horizontally or vertically through a transmission mechanism.

[0014] Furthermore, the first drive motor, the second drive motor, and the locking pin are installed in the lower fixed seat, and the lower fixed seat is provided with an opening for the locking pin to extend out.

[0015] Furthermore, the second drive motor is a linear motor.

[0016] Furthermore, it also includes a control box, through which the first drive motor, the second drive motor, and the third drive motor are connected to the power supply, and a driver's cab occupancy signal is connected to the power connection circuit of the first drive motor, the second drive motor, and the third drive motor so that the rearview mirror can only be operated when it is determined that the driver's cab at the rearview mirror mounting location is in use.

[0017] Furthermore, it also includes an infrared sensor for detecting the surrounding environment, and the detection signal of the infrared sensor is connected to the power connection circuit of the first drive motor, the second drive motor, and the third drive motor. In this way, the rearview mirror can be turned on or off only after it is determined that there are no obstructions at the installation location.

[0018] Furthermore, a rearview mirror key is connected to the power connection circuit of the first drive motor, the second drive motor, and the third drive motor to prevent the rearview mirror from being accidentally activated during train operation.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1) This utility model can automatically open and close according to the vehicle's parking or driving status, and automatically lock when closed. It can also detect obstacles and record and store video. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the open state structure of an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the closed state structure according to an embodiment of the present invention.

[0024] Figure 3 for Figure 2 Enlarged view of point A.

[0025] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the present invention.

[0026] Figure 5 This is a control logic diagram of an embodiment of the present invention.

[0027] In the diagram: 1. Lens; 2. Upper mounting base; 3. Rotating shaft; 4. Lower mounting base; 5. Wire; 6. Locking pin; 7. Locking clip; 8. Camera; 9. Control box; 10. Lens box; 11. Third drive motor;

[0028] 41. First bearing; 42. Second bearing; 43. First drive motor; 44. Third bearing; 45. Opening; 46. Second drive motor;

[0029] 71. Keyhole. Detailed Implementation

[0030] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1 - Figure 5 An embodiment of the rearview mirror for rail transit vehicles of this utility model includes an upper fixing base 2, a lower fixing base 4, and a mirror box 10. The mirror box 10 has a mirror 1 integrated and installed on the front. Its structural features are as follows:

[0034] The lower fixed base 4 is equipped with a first drive motor 43 and a second drive motor 46, wherein the second drive motor 46 is preferably a linear motor.

[0035] A rotating shaft 3 is fixedly installed on one side of the mirror box 10. One end of the rotating shaft 3 is rotatably connected to the upper fixed seat 2, and the other end extends into the lower fixed seat 4 and is rotatably connected to the lower fixed seat 4 through the first bearing 41 and the second bearing 42. The output shaft of the first drive motor 43 is connected to the rotating shaft 3. Under the drive of the first drive motor 43, the mirror box 10 rotates forward or backward with the lens 1 to realize the opening or closing of the rearview mirror.

[0036] A locking clip 7 is fixedly installed on the lower part of the rotating shaft 3. A locking pin 6 is installed inside the lower fixed seat 4. A locking hole 71 is provided on the locking clip 7. An opening 45 is provided on the lower fixed seat 4 corresponding to the locking pin 6. One end of the locking pin 6 is connected to the output shaft of the second drive motor 46. Under the drive of the second drive motor 46, the other end of the locking pin 6 extends out or retracts into the lower fixed seat 4 through the opening 45. When the locking pin 6 extends, it inserts into the locking hole 71, locking the rearview mirror. When the locking pin 6 retracts, the rearview mirror is unlocked.

[0037] To facilitate the recording of images seen through the rearview mirror, a camera 8 is installed on the lens 1.

[0038] To increase the viewing angle, a third drive motor 11 is installed inside the lens housing 10. The third drive motor 11 drives the lens 1 to rotate horizontally by ±15° or vertically by ±15° via a transmission mechanism. It should be noted that the transmission mechanism mentioned here is an existing, mature structure.

[0039] To facilitate automatic control, the rearview mirror of this utility model also includes a control box 9. The first drive motor 43, the second drive motor 46, and the third drive motor 11 are connected to the power supply through the control box 9. The power connection circuit of the first drive motor 43, the second drive motor 46, and the third drive motor 11 is connected to the driver's cab occupancy signal, so that the rearview mirror can only be controlled by the first drive motor 43, the second drive motor 46, and the third drive motor 11 when the driver's cab at the rearview mirror installation location is activated.

[0040] To ensure the safe opening of the rearview mirror, an infrared sensor (not shown) for detecting the surrounding environment is installed on the mirror housing 10, and the detection signal of the infrared sensor is connected to the power connection circuit of the first drive motor 43, the second drive motor 46, and the third drive motor 11. Only when the infrared sensor detects that there are no obstacles around the rearview mirror can the first drive motor 43, the second drive motor 46, and the third drive motor 11 be powered on to open the mirror.

[0041] To prevent the rearview mirrors from being accidentally opened while the train is in motion, a rearview mirror key (not shown in the figure) is connected to the power connection circuit of the first drive motor 43, the second drive motor 46, and the third drive motor 11. The rearview mirrors can only be opened and their angle adjusted by the first drive motor 43, the second drive motor 46, and the third drive motor 11 when the rearview mirror key is turned on.

[0042] When the rearview mirror of this utility model is in use, when the train stops (the train gives a zero speed signal and a driver's cab occupancy signal) and the infrared sensor detects no obstruction, the rearview mirror electric key is turned on, the second drive motor 46 drives the locking pin 6 to descend, so that the mirror box 10 can rotate around the rotating shaft 3 to prepare for opening, and the rearview mirror can be automatically opened by the first drive motor 43, that is, the mirror box 10 can rotate around the rotating shaft 3 together with the lens 1 to achieve 0-90° until it is fully opened. The driver can observe the rear view through the rearview mirror, and can also adjust the angle of the lens 1 by the third drive motor 11. At the same time, the camera 8 can record data.

[0043] When the train starts (receiving a non-zero speed signal), the first drive motor 43 is activated, and the mirror box 10 can rotate around the rotating shaft 3 to achieve automatic closing. When the mirror box 10 is completely closed, the second drive motor 46 drives the locking pin shaft 6 to rise and interlock with the locking fixing card 7. At this time, the train is running normally, the rearview mirror is locked, and it will not be affected by wind speed to open. It can also avoid safety accidents caused by exceeding the limit. At the same time, the rearview mirror electric key is turned off, the control is disabled, and the driver cannot open the rearview mirror.

[0044] The rearview mirror of this utility model can also replace the locking fixing clip 7 and the locking pin 6 with an electromagnet assembly, that is, the rearview mirror can be locked by the electromagnet assembly.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. A rearview mirror for rail transit vehicles, comprising an upper fixing base (2), a lower fixing base (4), and a mirror housing (10), wherein a lens (1) is mounted on the front of the mirror housing, characterized in that: It also includes a first drive motor (43) and a second drive motor (46); A rotating shaft (3) is fixedly installed on one side of the mirror box. One end of the rotating shaft is rotatably connected to the upper fixed seat, and the other end is rotatably connected to the lower fixed seat. The output shaft of the first drive motor is connected to the rotating shaft. Under the drive of the first drive motor, the mirror box rotates forward or backward to open or close the rearview mirror. A locking clip (7) is fixedly installed on the rotating shaft, and a locking pin (6) is installed on the upper or lower fixed seat. A locking hole (71) is provided on the locking clip. One end of the locking pin is connected to the output shaft of the second drive motor. Under the drive of the second drive motor, the other end of the locking pin is inserted into or withdrawn from the locking hole. When the locking pin is inserted into the locking hole, the rearview mirror is locked. When the locking pin is withdrawn from the locking hole, the rearview mirror is unlocked.

2. The rearview mirror for rail transit vehicles according to claim 1, characterized in that, A camera (8) is mounted on the lens.

3. The rearview mirror for rail transit vehicles according to claim 1, characterized in that, The lens case is equipped with a third drive motor (11), which drives the lens to rotate horizontally or vertically through a transmission mechanism.

4. The rearview mirror for rail transit vehicles according to claim 1, characterized in that, The first drive motor, the second drive motor, and the locking pin are installed in the lower fixed seat, and the lower fixed seat is provided with an opening (45) for the locking pin to extend out.

5. The rearview mirror for rail transit vehicles according to claim 1, characterized in that, The second drive motor is a linear motor.

6. The rearview mirror for rail transit vehicles according to claim 1, characterized in that, It also includes a control box (9), through which the first drive motor, the second drive motor, and the third drive motor are connected to the power supply, and the power supply connection circuit of the first drive motor, the second drive motor, and the third drive motor is connected to the driver's cab occupancy signal.

7. The rearview mirror for rail transit vehicles according to claim 6, characterized in that, It also includes an infrared sensor for detecting the surrounding environment, and the detection signal of the infrared sensor is connected to the power connection circuit of the first drive motor, the second drive motor, and the third drive motor.

8. The rearview mirror for rail transit vehicles according to claim 6, characterized in that, The rearview mirror key is connected to the power connection circuit of the first drive motor, the second drive motor, and the third drive motor.

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