Rail vehicle and rearview mirror device and control method thereof

Abstract

The present invention discloses a rail vehicle and a rearview mirror device and a control method thereof, wherein the device comprises a rearview mirror assembly and a control module; the rearview mirror assembly comprises a mirror body, and a first locking mechanism, a second locking mechanism, a first adjusting mechanism, a second adjusting mechanism, a first cushion block and a second cushion block; the first locking mechanism and the second locking mechanism are respectively located on the left and right sides of the mirror body, and the first adjusting mechanism and the second adjusting mechanism are respectively located on the upper and lower sides of the mirror body; the control module is used to control the extension or retraction of the locking plate of the first locking mechanism and / or the second locking mechanism, and to control the extension or retraction of the connecting assembly of the first adjusting mechanism and the second adjusting mechanism, so as to realize the control of the mirror body in a locked state, a rearview state or a forward state. The present invention can realize the forward or rearview control of the rearview mirror, reduce the running resistance during the operation of the vehicle, and ensure the safety of the vehicle operation.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle rearview mirrors, and in particular relates to a rail vehicle and a rearview mirror device and a control method thereof. Background Art

[0002] The rearview mirror is one of the driving safety components for vehicle drivers and passengers to observe and is the main way for drivers and passengers to understand the surrounding environment of the vehicle after the vehicle stops or returns to the depot. With the increase in vehicle operating speed, passenger density, and vehicle departure density, its operating safety is becoming more and more important.

[0003] The existing rearview mirrors (see patent document with application publication number CN107878493A) have their main bodies protruding from the vehicle shell. This protruding structure makes it easy for the rearview mirror to intrude into the vehicle limit. At the same time, the protruding structure not only affects the aerodynamic performance of the vehicle, resulting in increased resistance during high-speed operation of the vehicle, but also easily causes the vehicle to scrape foreign objects during operation, such as branches beside the road, affecting driving safety.

[0004] In addition, the dense number of vehicles on the route and precise operation time management require that the vehicle be able to obtain information about the vehicle's surroundings in the shortest possible time after stopping at a station or entering the warehouse. This requires that operations such as opening, closing, and adjusting the rearview mirror can be completed in a very short time, and the rearview mirror needs to have the function of quick start and stop.

[0005] In addition, the current rearview mirror can only see the driver's rear view, and cannot observe the environment in front of the driver, such as being unable to observe the station sign and parking sign in front of the driver when the vehicle enters the station or returns to the garage. Summary of the invention

[0006] The object of the present invention is to provide a rail vehicle and a rearview mirror device and a control method thereof, so as to solve the problem that the traditional rearview mirror with a protruding structure not only increases the running resistance but also affects the driving safety, and the problem that the traditional rearview mirror has no quick start and stop function and only supports observing the rear side field of view.

[0007] The present invention solves the above technical problems through the following technical solutions: a rearview mirror device, applied to a rail vehicle, the device comprising a rearview mirror assembly and a control module;

[0008] The rearview mirror assembly includes a mirror body, and a first locking mechanism, a second locking mechanism, a first adjusting mechanism, a second adjusting mechanism, a first cushion block and a second cushion block arranged on the side of the vehicle body; the mirror body includes a mirror surface, a first rotating arm and a second rotating arm respectively arranged on the left and right sides of the mirror surface, and a first rotating shaft and a second rotating shaft respectively arranged on the upper and lower sides of the mirror surface; the first rotating shaft is arranged in the shaft hole of the connecting component of the first adjusting mechanism, and the second rotating shaft is arranged in the shaft hole of the connecting component of the second adjusting mechanism;

[0009] The control module is used to control the extension or retraction of the locking plate of the first locking mechanism and / or the second locking mechanism, and control the extension or retraction of the connecting component of the first adjusting mechanism and the second adjusting mechanism, so as to control the mirror body to be in a locked state, a rear-view state or a forward-view state; when the mirror body is in a locked state, the first rotating arm is located between the locking plate of the first locking mechanism and the first pad, and the second rotating arm is located between the locking plate of the second locking mechanism and the second pad; when the mirror body is in a rear-view or forward-view state, the second rotating arm is located between the locking plate of the second locking mechanism and the second pad, or the first rotating arm is located between the locking plate of the first locking mechanism and the first pad.

[0010] Further, the control module includes an air source and an electrical control module; the air source is respectively connected to the ventilation holes of the first locking mechanism, the second locking mechanism, the first regulating mechanism and the second regulating mechanism, and a pneumatic regulating valve is provided on the pipeline between the air source and each ventilation hole; the electrical control module is electrically connected to the pneumatic regulating valve;

[0011] The electrical control module controls the locking plates of the first locking mechanism and the second locking mechanism, and the connecting components of the first regulating mechanism and the second regulating mechanism by controlling the pneumatic regulating valves.

[0012] Furthermore, the first locking mechanism and the second locking mechanism each include a cylinder body, a locking plate and at least one locking spring; the first end of the locking plate is arranged in the cylinder body, and the second end extends out of the cylinder body; one end of each of the locking springs is connected to the first end of the locking plate, and the other end is connected to the inner wall of the cylinder body; a first exhaust hole for communicating with the air source is provided on the cylinder body.

[0013] Furthermore, the first adjustment mechanism and the second adjustment mechanism each include a housing, a slider and a connecting assembly;

[0014] The slider is arranged in the shell; the connecting assembly includes a connecting arm, a telescopic arm and a first return spring, the first end of the connecting arm is connected to the slider, and the second end thereof extends to the outside of the shell and is a hollow structure; the first end of the telescopic arm is located in the hollow structure, the second end of the telescopic arm extends to the outside of the hollow structure and is provided with the axial hole, one end of the first return spring is fixed to the first end of the telescopic arm, and the other end is fixed in the hollow structure; a second exhaust hole for communicating with the air source is provided on the hollow structure.

[0015] Furthermore, the slider divides the inner cavity of the shell into a first inner cavity and a second inner cavity, a second return spring is arranged in the first inner cavity, and two ends of the second return spring are respectively connected to the end surface of the shell and the slider, and a third return spring is arranged in the second inner cavity, and two ends of the third return spring are respectively connected to the end surface of the shell and the slider;

[0016] A third exhaust hole and a fourth exhaust hole for communicating with the gas source are respectively provided on the outer shell, the third exhaust hole is used to inflate and exhaust the first inner cavity, and the fourth exhaust hole is used to inflate and exhaust the second inner cavity.

[0017] Furthermore, the control module is also used to control the retraction of the extended locking plate when the mirror body is in the rear-view state or the front-view state, and control the movement of the sliders of the first adjustment mechanism and the second adjustment mechanism, so as to realize the control of the flipping angle of the mirror body in the rear-view state or the front-view state.

[0018] Furthermore, grooves matching the shapes of the first rotating arm and the second rotating arm are formed on the first cushion block and the second cushion block. Preferably, the first rotating arm and the second rotating arm are both cylindrical.

[0019] Furthermore, the mirror surface is a mirror surface that is light-transmissive on the outer side and light-reflective on the inner side; wherein the inner side refers to the side close to the vehicle body when the mirror body is in a locked state.

[0020] Based on the same inventive concept, the present invention also provides a control method for the rearview mirror device as described above, the method comprising the following steps:

[0021] When no continuous zero-speed signal is received, the locking plates of the first locking mechanism and the second locking mechanism are controlled to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are controlled to retract, so that the mirror body is in a locked state;

[0022] When a continuous zero-speed signal and a rear-view command are received, the locking plate of the first locking mechanism is controlled to retract, the locking plate of the second locking mechanism is controlled to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are both extended, so that the mirror body is in a rear-view state;

[0023] When a continuous zero-speed signal and a forward-looking command are received, the locking plate of the second locking mechanism is controlled to retract, the locking plate of the first locking mechanism is extended, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are extended, so that the mirror body is in a forward-looking state.

[0024] Furthermore, when the locking plate is retracted, the inflation pressure of the cylinder of the first locking mechanism or the second locking mechanism is:

[0025] P 1 =(n×k1 ×L 1 ) / S 1

[0026] Among them, P 1 is the inflation pressure of the cylinder of the first locking mechanism or the second locking mechanism; n is the number of locking springs in the corresponding cylinder; k 1 is the elastic coefficient of the corresponding locking spring; L 1 is the retraction distance of the corresponding locking plate; S 1 It is the effective area of ​​the corresponding locking plate to withstand the air pressure.

[0027] Furthermore, when the extension control of the connecting assembly is performed, the inflation pressure of the connecting arms of the first adjusting mechanism and the second adjusting mechanism are both:

[0028] P 2 =2Lk 2 sin(α 1 / 2) / S 2

[0029] Among them, P 2 is the inflation pressure of the connecting arm of the first adjusting mechanism or the second adjusting mechanism; L is the distance between the center of the first rotating shaft and the center of the first rotating arm, or the distance between the center of the second rotating shaft and the center of the second rotating arm; k 2 is the elastic coefficient of the first return spring; 1 is the unfolding angle of the mirror body; S 2 It is the effective area of ​​the telescopic arm that withstands the air pressure.

[0030] Furthermore, the method further includes, when receiving a continuous zero speed signal, a rear view command or a forward view command, and a flip command, controlling the locking plate of the first locking mechanism or the second locking mechanism to retract, the locking plate of the second locking mechanism or the first locking mechanism to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism to extend, so that the mirror body is in a rear view state or a forward view state;

[0031] The extended locking plate is controlled to retract, and the sliders of the first adjustment structure and the second adjustment mechanism are controlled to move, so as to adjust the flipping angle of the mirror body.

[0032] Furthermore, when adjusting the flip angle of the mirror body, the inflation pressure of the first inner cavity or the second inner cavity of the first adjustment mechanism and the second adjustment mechanism is:

[0033] P 3 =k 3 Wtanα 2 / S 3

[0034] Among them, P 3k is the inflation pressure of the first inner cavity or the second inner cavity; 3 is the elastic coefficient of the second return spring or the third return spring; W is the width of the mirror body; α 2 is the flip angle of the mirror; S 3 It is the effective area of ​​the slider of the first regulating mechanism or the second regulating mechanism that withstands the air pressure.

[0035] Furthermore, the first locking mechanism and / or the second locking mechanism is controlled first, and then the first adjusting mechanism and the second adjusting mechanism are controlled after a delay.

[0036] Based on the same inventive concept, the present invention also provides a rail vehicle, wherein recessed areas are respectively provided on both sides of the vehicle body, and the rearview mirror device as described above is provided in the recessed areas; when the mirror body of the rearview mirror device is in a locked state, the rearview mirror device is flush with the side of the vehicle body.

[0037] Beneficial Effects

[0038] Compared with the prior art, the advantages of the present invention are:

[0039] 1. The first rotating arm of the mirror body is limited by the locking plate (the air pressure in the cylinder is 0) extended by the first locking mechanism and the first cushion block, and the second rotating arm of the mirror body is limited by the locking plate extended by the second locking mechanism and the second cushion block, so that the mirror body is in a locked state, ensuring that the mirror body is folded to the side of the vehicle body (flush with the vehicle body) during the operation of the vehicle, and will not protrude or unfold, reducing the running resistance during the operation of the vehicle, and at the same time ensuring that the mirror body will not open automatically due to failure or other factors, ensuring absolute safety during the operation of the vehicle.

[0040] 2. By controlling the retraction of the locking plate of the first locking mechanism or the second locking mechanism, and adjusting the extension length of the telescopic arms of the first adjusting mechanism and the second adjusting mechanism, the adjustment of the expansion angle of the mirror body as well as the rear-view function and the front-view function are realized, thereby realizing the panoramic acquisition of the front and rear fields of view; in the rear-view or front-view state, the adjustment of the flip angle of the mirror body is realized by adjusting the movement of the sliders of the first adjusting mechanism and the second adjusting mechanism in the shell, and the adjustment of the expansion angle and the flip angle of the mirror body meets the needs of different driver groups for the viewing angle of the rearview mirror, and greatly improves the efficiency and quality of the driver's field of view.

[0041] 3. The locking spring, the first return spring, the second return spring and the third return spring play a buffering role, which can ensure a smooth inflation process; the slider and the locking plate have a relatively small effective area, and can move quickly under the action of atmospheric pressure. Therefore, the rearview mirror device can smoothly complete the action in a very short time, reducing the observation and stop time, and improving the operation efficiency of the line. When the rearview mirror device is reset, the air pressure in the cylinder, the connecting arm, the first inner cavity and the second inner cavity is reduced to 0 by deflation. The change time of the air pressure difference is extremely short, which greatly reduces the reset locking time and improves the operation efficiency of the line. The rearview mirror device of the present invention adopts an air pressure control method, with a fast inflation and deflation speed, and can realize the quick start and stop function. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 is a working principle diagram of a rearview mirror device in an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of a rearview mirror device located on a vehicle body in an embodiment of the present invention;

[0045] Figure 3 is a schematic structural diagram of a rearview mirror device in an embodiment of the present invention;

[0046] Figure 4 is a schematic structural diagram of the first locking mechanism or the second locking mechanism in an embodiment of the present invention;

[0047] Figure 5 is a positional relationship diagram among the first locking mechanism or the second locking mechanism, the first cushion block or the second cushion block, and the mirror body in an embodiment of the present invention;

[0048] Figure 6 is a schematic structural diagram of a first adjustment mechanism or a second adjustment mechanism in an embodiment of the present invention;

[0049] Figure 7 2 is a schematic diagram of the unfolding of the mirror body in an embodiment of the present invention;

[0050] Figure 8 2 is a schematic diagram of the mirror structure in an embodiment of the present invention;

[0051] Fig. 9 Schematic diagram of mirror body flipping in an embodiment of the present invention.

[0052] Among them, 100-first locking mechanism, 110-cylinder body, 111-first ventilation and exhaust hole, 120-locking plate, 130-locking spring, 200-second locking mechanism, 300-first adjusting mechanism, 310-housing, 320-slider, 330-connecting arm, 331-second ventilation and exhaust hole, 340-second return spring, 350-third return spring, 360-telescopic arm, 400-second adjusting mechanism, 500-side of vehicle body, 600-mirror body, 610-mirror surface, 620-first rotating arm, 630-second rotating arm, 640-first rotating shaft, 650-second rotating shaft, 700-first cushion block, 800-second cushion block. DETAILED DESCRIPTION

[0053] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0055] A rearview mirror device is provided in an embodiment of the present invention. The rearview mirror device is arranged in a recessed area of ​​a vehicle body side 500. When the mirror body 600 of the rearview mirror device is in a locked state, the rearview mirror device is flush with the vehicle body side 500, thereby ensuring the safety of the vehicle during operation.

[0056] like Figures 1 to 3 As shown, the rearview mirror device of the present invention includes a rearview mirror assembly and a control module; the rearview mirror assembly includes a mirror body 600, and a first locking mechanism 100, a second locking mechanism 200, a first adjusting mechanism 300, a second adjusting mechanism 400, a first cushion block 700 and a second cushion block 800 arranged on the side 500 of the vehicle body; the mirror body 600 includes a mirror surface 610, a first rotating arm 620 and a second rotating arm 630 respectively arranged on the left and right sides of the mirror surface 610, and a first rotating shaft 640 and a second rotating shaft 650 respectively arranged on the upper and lower sides of the mirror surface 610; the first rotating shaft 640 is arranged in the shaft hole of the connecting component of the first adjusting mechanism 300, and the second rotating shaft 650 is arranged in the shaft hole of the connecting component of the second adjusting mechanism 400.

[0057] The control module is used to control the extension or retraction of the locking plate 120 of the first locking mechanism 100 and / or the second locking mechanism 200, and to control the extension or retraction of the connecting assembly of the first adjusting mechanism 300 and the second adjusting mechanism 400, so as to control the mirror body 600 to be in a locked state, a rear-view state or a front-view state. When the mirror body 600 is in a locked state (i.e., folded to the side of the vehicle body 500), the first locking mechanism 100 and the second locking mechanism 200 are symmetrically arranged on the left and right sides of the mirror body 600, respectively, and the first adjusting mechanism 300 and the second adjusting mechanism 400 are symmetrically arranged on the upper and lower sides of the mirror body 600, respectively. Figure 2 and 3 shown.

[0058] The rearview mirror device of the present invention is an electric control method or a pneumatic control method. When the electric control method is adopted, in a specific embodiment of the present invention, the first locking mechanism 100 and the second locking mechanism 200 both include a housing, a first linear drive module and an electric telescopic plate arranged in the housing, the input end of the first linear drive module is electrically connected to the control module, and the output end of the first linear drive module is connected to the electric telescopic plate, and the control module controls the action of the first linear drive module, thereby controlling the extension or retraction of the electric telescopic plate, thereby controlling the first rotating arm 620 or the second rotating arm 630 of the mirror body 600 to be in a limited or free state. When an electric control method is adopted, in a specific embodiment of the present invention, the first adjustment mechanism 300 and the second adjustment mechanism 400 both include a shell, a second linear drive module and an electric telescopic rod arranged in the shell, an axial hole is provided at the end of the electric telescopic rod, the input end of the second linear drive module is electrically connected to the control module, and the output end of the second linear drive module is connected to the electric telescopic rod. The control module controls the action of the second linear drive module, thereby controlling the extension or retraction of the electric telescopic rod, thereby controlling the expansion or folding of the mirror body 600.

[0059] During the electric control process, the rearview mirror device is prone to impact and vibration, and the motor included in the linear drive module is large and cannot be installed on the side 500 of the vehicle body and remain flush with the outer surface of the side 500 of the vehicle body. Therefore, the present invention prefers pneumatic control.

[0060] When pneumatic control is used, such as Figure 2As shown, in a specific embodiment of the present invention, the control module includes an air source and an electrical control module; the air source is connected to the ventilation holes (i.e., the first ventilation hole 111, the second ventilation hole 331, the third ventilation hole and the fourth ventilation hole) of the first locking mechanism 100, the second locking mechanism 200, the first adjusting mechanism 300 and the second adjusting mechanism 400 respectively, and a pneumatic regulating valve is provided on the pipeline between the air source and each ventilation hole; the electrical control module is electrically connected to the pneumatic regulating valve; the electrical control module controls the extension or retraction of the locking plates 120 of the first locking mechanism 100 and the second locking mechanism 200, and controls the extension or retraction of the telescopic arms 360 of the connecting components of the first adjusting mechanism 300 and the second adjusting mechanism 400 by controlling each pneumatic regulating valve.

[0061] When pneumatic control is used, such as Figure 4 and 5 As shown, in a specific embodiment of the present invention, the first locking mechanism 100 and the second locking mechanism 200 each include a cylinder body 110, a locking plate 120 and at least one locking spring 130; the first end of the locking plate 120 is arranged in the cylinder body 110, and the second end extends to the outside of the cylinder body 110 and is used to limit the first rotating arm 620 or the second rotating arm 630 of the mirror body 600 between the locking plate 120 and the first cushion block 700 or the second cushion block 800; one end of each of the locking springs 130 is connected to the first end of the locking plate 120, and the other end is connected to the inner wall of the cylinder body 110, and multiple locking springs 130 are arranged in parallel and evenly; a first exhaust hole 111 for communicating with the air source is provided on the cylinder body 110. The cylinders 110 of the first locking mechanism 100 and the second locking mechanism 200 are disposed on the side surface 500 of the vehicle body. When the locking plate 120 is extended, the rotating arm of the mirror body 600 is restricted by the locking plate 120 and the first cushion block 700 or the second cushion block 800 .

[0062] The locking plates 120 of the first locking mechanism 100 and the second locking mechanism 200 move back and forth under the elastic force of the locking spring 130 and the change of the air pressure in the first air outlet. The specific working process is as follows: in the initial state, the air pressure in the cylinder 110 connected to the first air outlet 111 is 0, the locking spring 130 is in a free state, and the locking plate 120 is in an extended state (the extended length is L 1), the first rotating arm 620 and the second rotating arm 630 of the mirror body 600 are limited by the locking plate 120 and the first cushion block 700 and the second cushion block 800; the pneumatic regulating valve between the first ventilation hole 111 and the air source is controlled, and the air source inflates the cylinder body 110 through the first ventilation hole 111, and the inflation pressure acts on the first end of the locking plate 120 to compress the locking spring 130, and then the second end of the locking plate 120 is retracted into the cylinder body 110, so that the first rotating arm 620 or the second rotating arm 630 of the mirror body 600 is exposed and in a free state, When the cylinder 110 is exhausted through the first exhaust hole 111, the elastic force generated by the compressed locking spring 130 acts on the first end of the locking plate 120, so that the locking plate 120 moves in the cylinder 110, and then the second end of the locking plate 120 extends out of the cylinder 110 until the air pressure in the cylinder 110 is 0, and the first rotating arm 620 or the second rotating arm 630 of the mirror body 600 is limited by the extended locking plate 120 and the first cushion block 700 or the second cushion block 800, and the extended length of the locking plate 120 is L 1 , the elastic coefficient of each locking spring 130 is k 1 .

[0063] The locking plate 120 of the first locking mechanism 100 or the second locking mechanism 200 can be controlled individually, so that when the locking plate 120 on one side of the mirror body 600 is extended, the mirror body 600 can rotate freely along the groove on the rotating arm and the pad on the other side to realize the expansion of the mirror body 600, thereby realizing the forward and rearward viewing functions. The mirror body 600 rotates forward to ensure that the driver can see the side and rear view, and the mirror body 600 rotates backward to ensure that the driver can see the side and front view.

[0064] In a specific embodiment of the present invention, the locking plate 120 is an L-shaped structure or a T-shaped structure. The locking plate 120 of the present invention is preferably an L-shaped structure. Compared with the T-shaped structure, the L-shaped structure has a larger effective area to withstand air pressure, and can extend a larger stroke under a smaller air pressure, and is also conducive to the flushing of the entire rearview mirror device with the side 500 of the vehicle body.

[0065] When pneumatic control is used, such as Figure 3 and 6As shown, in a specific embodiment of the present invention, the first adjustment mechanism 300 and the second adjustment mechanism 400 both include a housing 310, a slider 320 and a connecting assembly; the slider 320 is arranged in the housing 310, and the slider 320 divides the inner cavity of the housing 310 into a first inner cavity and a second inner cavity, a second return spring 340 is arranged in the first inner cavity, and the two ends of the second return spring 340 are respectively connected to the end surface of the housing 310 and the slider 320, a third return spring 350 is arranged in the second inner cavity, and the two ends of the third return spring 350 are respectively connected to the end surface of the housing 310 and the slider 320; the connecting assembly includes a connecting arm 330, a telescopic arm 360 and a first return spring, The first end of the connecting arm 330 is connected to the slider 320, and the second end thereof extends to the outside of the outer shell 310 and is a hollow structure; the first end of the telescopic arm 360 is located in the hollow structure, the second end of the telescopic arm 360 extends to the outside of the hollow structure and is provided with the axial hole, one end of the first return spring is fixed to the first end of the telescopic arm 360, and the other end is fixed to the end surface of the hollow structure; a second ventilation hole 331 for communicating with the air source is provided on the hollow structure; a third ventilation hole and a fourth ventilation hole for communicating with the air source are respectively provided on the outer shell 310, the third ventilation hole is used to inflate and exhaust the first inner cavity, and the fourth ventilation hole is used to inflate and exhaust the second inner cavity.

[0066] The connecting assembly is similar to a cylinder, the connecting arm 330 is similar to the cylinder body of the cylinder, the telescopic arm 360 is similar to the piston and piston rod of the cylinder, and the first return spring is similar to the spring of the cylinder. In the initial state, the air pressure in the hollow structure of the connecting arm 330 is 0, the first return spring is in a free state, the telescopic arm 360 is in a retracted state (i.e., the second end of the telescopic arm 360 is located in the hollow structure), and the mirror body 600 is folded. At this time, the mirror body 600 is the mirror body 600 before being unfolded. The telescopic arm 360 of the connecting assembly of the first regulating mechanism 300 and the second regulating mechanism 400 extends or retracts under the elastic force of the first return spring and the change of the air pressure of the second ventilation and exhaust port (changing the air pressure in the hollow structure where the first return spring is located). The specific working process is: the pneumatic regulating valve between the second ventilation and exhaust holes 331 of the first regulating mechanism 300 and the second regulating mechanism 400 and the air source is controlled at the same time, and the air source simultaneously inflates the hollow structures of the first regulating mechanism 300 and the second regulating mechanism 400 through the second ventilation and exhaust holes 331, and the inflation pressure acts on the telescopic arm 360 to stretch the first return spring, thereby causing the first return spring to stretch. The second end of the telescopic arm 360 extends out of the connecting arm 330. Since the axial hole at the second end of the telescopic arm 360 is connected to the first rotating shaft 640 and the second rotating shaft 650 of the mirror body 600, the upper and lower sides of the mirror body 600 are pushed to move, so that the mirror body 600 is unfolded; when the hollow structure is exhausted through the second exhaust hole 331, the elastic force generated by the compressed first return spring acts on the telescopic arm 360, so that the second end of the telescopic arm 360 is retracted into the hollow structure of the connecting arm 330, and then the mirror body 600 is retracted until the air pressure in the hollow structure is 0, and the extended length of the telescopic arm 360 relative to the connecting arm 330 is X 1 , the elastic coefficient of the first return spring is k 2 .

[0067] In this embodiment, the connecting arm 330 is an L-shaped structure, the first end of the L-shaped structure is connected to the slider 320, and the second end thereof is a hollow structure. When the telescopic arm 360 extends from the second end of the L-shaped structure, a thrust is generated on the upper and lower sides of the mirror body 600, thereby unfolding the mirror body 600; when the telescopic arm 360 retracts into the second end of the L-shaped structure, a pulling force is generated on the upper and lower sides of the mirror body 600, thereby folding the mirror body 600. The shaft hole on the telescopic arm 360 is a cylindrical shaft hole, so as to cooperate with the cylindrical first rotating shaft 640 and the second rotating shaft 650 of the mirror body 600 to form a rotating structure, and the rotating structure can realize 360° rotation.

[0068] When the mirror body 600 is in the forward or rearward viewing state, the flip angle of the mirror body 600 can also be adjusted by adjusting the position of the slider 320 in the housing 310. In the initial state, the pressures of the first inner cavity and the second inner cavity are both 0, the second return spring 340 and the third return spring 350 are the same and are both in a free state, and the slider 320 is in the middle position of the housing 310. At this time, the mirror body 600 is the mirror body 600 before flipping. When the corresponding first inner cavity is inflated through the third exhaust holes of the first adjustment mechanism 300 and the second adjustment mechanism 400 at the same time, the inflation pressure acts on the slider 320, causing the slider 320 to move toward the second inner cavity, thereby compressing the third return spring 350, causing the upper and lower sides of the mirror body 600 to move relative to each other, thereby realizing positive or negative flipping of the mirror body 600, and the corresponding flipping angle is positive or negative; when the first inner cavities of the first adjustment mechanism 300 and the second adjustment mechanism 400 are exhausted through their respective third exhaust holes, the elastic force generated by the third return spring 350 acts on the slider 320, causing the slider 320 to move toward the first inner cavity until the slider 320 is in the middle position of the shell 310, the air pressure in the first inner cavity and the second inner cavity is 0, and the mirror body 600 returns to the state before flipping. Similarly, when the second inner cavity is inflated through the fourth exhaust holes of the first adjustment mechanism 300 and the second adjustment mechanism 400 at the same time, the inflation pressure acts on the slider 320, causing the slider 320 to move toward the first inner cavity, thereby compressing the second return spring 340, causing the upper and lower sides of the mirror body 600 to move relative to each other, thereby realizing negative or positive flipping of the mirror body 600, and the corresponding flipping angle is negative or positive; when the second inner cavities of the first adjustment mechanism 300 and the second adjustment mechanism 400 are exhausted through their respective fourth exhaust holes, the elastic force generated by the second return spring 340 acts on the slider 320, causing the slider 320 to move toward the second inner cavity until the slider 320 is in the middle position of the outer shell 310, the air pressure in the first inner cavity and the second inner cavity is 0, and the mirror body 600 returns to the state before flipping.

[0069] In the forward-looking or rearward-looking state (i.e., the locking plate 120 of the first locking mechanism 100 or the second locking mechanism 200 is already in the retracted state), the electrical control module controls the other locking plate 120 to retract, so that the first rotating arm 620 and the second rotating arm 630 of the mirror body 600 are both in a free state, and then controls the pressure of the first inner cavity or the second inner cavity of the first adjustment mechanism 300 and the second adjustment mechanism 400 to control the position of the slider 320 in the housing 310, so as to realize the control of the flip angle of the mirror body 600 in the rearward-looking state or the forward-looking state.

[0070] The control sequence of unfolding and flipping is: first, control the locking plate 120 on one side of the mirror body 600 to retract, then control the telescopic arms 360 of the first adjustment mechanism 300 and the second adjustment mechanism 400 to extend, so that the mirror body 600 is unfolded to realize the forward or rearward viewing function, then control the extended locking plate 120 to retract, and finally control the sliders 320 of the first adjustment mechanism 300 and the second adjustment mechanism 400 to move, so as to realize the flipping control of the mirror body 600. The control sequence of returning to the initial state (or resetting) is: first, control the sliders 320 of the first adjustment mechanism 300 and the second adjustment mechanism 400 to move to the middle position of the housing 310, so that the mirror body 600 is restored to the state before flipping, then control the telescopic arms 360 of the first adjustment mechanism 300 and the second adjustment mechanism 400 to retract, so that the mirror body 600 is folded, and finally control the locking plates 120 on both sides of the mirror body 600 to extend, so as to realize the locking of the mirror body 600.

[0071] In this embodiment, Figure 3 As shown, the first locking mechanism 100 is located on the left side of the mirror body 600, the second locking mechanism 200 is located on the right side of the mirror body 600, the first adjustment mechanism 300 is located on the upper side of the mirror body 600, and the second adjustment mechanism 400 is located on the lower side of the mirror body 600. If the slider 320 of the first adjustment mechanism 300 moves to the right and the slider 320 of the second adjustment mechanism 400 moves to the left, the flip angle of the mirror body 600 is positive; if the slider 320 of the first adjustment mechanism 300 moves to the left and the slider 320 of the second adjustment mechanism 400 moves to the right, the flip angle of the mirror body 600 is negative. When the flip angle is adjusted, the displacement of the slider 320 relative to the initial position of the slider 320 (that is, the slider 320 is in the middle position of the housing 310) is X 2 / X 3 , X 2 is the displacement of the slider 320 when the upper slider 320 moves to the right and the lower slider 320 moves to the left, X 3 is the displacement of the slider 320 when the upper slider 320 moves to the left and the lower slider 320 moves to the right, and the elastic coefficient of the second return spring 340 or the third return spring 350 is k 3 .

[0072] In a specific embodiment of the present invention, the first rotating arm 620 and the second rotating arm 630 are both cylindrical, and grooves matching the shapes of the first rotating arm 620 and the second rotating arm 630 are provided on the first cushion block 700 and the second cushion block 800, that is, semicircular grooves are provided on the first cushion block 700 and the second cushion block 800, so as to facilitate the free rotation of the first rotating arm 620 or the second rotating arm 630 in the groove when the mirror body 600 is unfolded, and the positioning of the first rotating arm 620 or the second rotating arm 630 in the groove when the mirror body 600 is locked. The locking plate 120 extends out and presses on the first rotating arm 620 and / or the second rotating arm 630 in the middle of the two sides of the mirror body 600, and the end of the locking plate 120 faces the through groove area between the edge of the mirror body 600 and the first rotating arm 620 or the second rotating arm 630. In this embodiment, the first cushion block 700 and the second cushion block 800 are rubber sealing pads.

[0073] In a specific embodiment of the present invention, the mirror surface 610 is a mirror surface 610 that is light-transmissive on the outside and light-reflective on the inside; wherein, the inside refers to the side close to the vehicle body when the mirror body 600 is in a locked state. The light-transmissive outside allows the mirror body 600 to project light as a side window during vehicle operation, ensuring that the side of the vehicle is visible and light enters during operation; the light-reflective inside allows the mirror body 600 to be used as a rear / front mirror when the vehicle arrives at a station or returns to the depot. The reflective surface of the mirror surface 610 is located on the inside, so there is no need to clean the rearview mirror outside the vehicle, which is convenient for the driver to operate and maintain.

[0074] When the locking plates 120 of the first locking mechanism 100 and the second locking mechanism 200 are both extended (initial state), and the telescopic arms 360 of the connecting components of the first adjusting mechanism 300 and the second adjusting mechanism 400 are both retracted, the first rotating arm 620 is located between the locking plate 120 of the first locking mechanism 100 and the first cushion block 700, and the second rotating arm 630 is located between the locking plate 120 of the second locking mechanism 200 and the second cushion block 800, and the mirror body 600 is in a locked state. When the locking plate 120 is extended, the air pressure in the corresponding cylinder 110 is 0, and the corresponding locking spring 130 is in a free state; when the telescopic arm 360 of the connecting component is retracted, the air pressure in the corresponding connecting arm 330 is 0, and the corresponding first return spring is in a free state.

[0075] When the locking plate 120 of the first locking mechanism 100 retracts, the locking plate 120 of the second locking mechanism 200 extends, and the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are both extended, the first rotating arm 620 is in a free state, the second rotating arm 630 is in a limited state, and the mirror body 600 is in a rear-view state. Air is inflated into the cylinder 110 through the first air vent 111 of the first locking mechanism 100, and the locking spring 130 is compressed under the inflation pressure, so that the locking plate 120 retracts into the cylinder 110, thereby exposing the first rotating arm 620 of the mirror body 600 and being in a free state, and then air is inflated into the hollow structure of the connecting arm 330 through the second air vent 331 of the first adjustment mechanism 300 and the second adjustment mechanism 400, and the first return spring is stretched under the inflation pressure, so that the telescopic arm 360 extends out from the connecting arm 330, thereby pushing the mirror body 600 to unfold with the second rotating arm 630 as the rotation axis, so that the reflective surface of the mirror 610 faces the rear of the vehicle body, thereby realizing the rear-view function.

[0076] When the locking plate 120 of the second locking mechanism 200 retracts, the locking plate 120 of the first locking mechanism 100 extends, and the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are both extended, the second rotating arm 630 is in a free state, the first rotating arm 620 is in a limited state, and the mirror body 600 is in a forward-looking state. Air is inflated into the cylinder 110 through the first air vent 111 of the second locking mechanism 200, and the locking spring 130 is compressed under the inflation pressure, so that the locking plate 120 retracts into the cylinder 110, thereby exposing the second rotating arm 630 of the mirror body 600 and being in a free state, and then air is inflated into the hollow structure of the connecting arm 330 through the second air vent 331 of the first adjustment mechanism 300 and the second adjustment mechanism 400, and the first return spring is stretched under the inflation pressure, so that the telescopic arm 360 extends out from the connecting arm 330, thereby pushing the mirror body 600 to unfold with the first rotating arm 620 as the rotation axis, so that the reflective surface of the mirror 610 faces the front of the vehicle body, thereby realizing the forward-looking function.

[0077] When the mirror body 600 is in the forward-looking or rearward-looking state, the extended locking plate 120 is controlled to retract, and the first rotating arm 620 or the second rotating arm 630 on both sides of the mirror body 600 are in a free state, and then the first adjustment mechanism 300 and the slider 320 of the second adjustment structure are controlled to move to realize the flipping control of the mirror body 600.

[0078] Based on the same inventive concept, an embodiment of the present invention further provides a control method for the rearview mirror device as described above, the method comprising the following steps:

[0079] Step S101: When the control module does not receive a continuous zero-speed signal, the locking plates 120 of the first locking mechanism 100 and the second locking mechanism 200 are controlled to extend, and the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are controlled to retract, so that the mirror body 600 is in a locked state.

[0080] When the zero speed signal is disconnected, the control module disconnects the power supply and signal transmission between each pneumatic control valve, each pneumatic control valve loses power, the air source cannot be connected to the first exhaust hole 111, the second exhaust hole 331, the third exhaust hole and the fourth exhaust hole, the air pressure at the output end of each pneumatic control valve is 0, the locking plates 120 of the first locking mechanism 100 and the second locking mechanism 200 are extended, and the first rotating arm 620 and the second rotating arm 630 of the mirror body 600 are stuck, and the mirror body 600 is in a locked state. At this time, the inflation pressure P in the cylinder 110 of the first locking mechanism 100 and the second locking mechanism 200 is 1 are all 0, and the extended length of the locking plate 120 is L 1 ; Inflation pressure P in the hollow structure of the connecting arm 330 2 is 0, the extension length of the telescopic arm 360 is X 1 The inflation pressure P of the first inner cavity and the second inner cavity of the housing 310 is 0; 3 are all 0, the displacement of the slider 320 is X 2 / X 3 Both are 0.

[0081] When the control module receives a continuous zero-speed signal, the circuit between the control module and each pneumatic control valve is connected, the control module provides power to the pneumatic control valve, the input and output valve ports of the pneumatic control valve are connected, and the rearview mirror device is in working state.

[0082] Step S102: When a continuous zero-speed signal is received and a rear-view command (including an expansion angle command) is received, the locking plate 120 of the first locking mechanism 100 is controlled to retract, the locking plate 120 of the second locking mechanism 200 is extended, and the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are both extended, so that the mirror body 600 is in a rear-view state.

[0083] The control module controls the pneumatic regulating valve between the first air outlet 111 of the first locking mechanism 100 and the air source to be connected. The air source provides the cylinder 110 of the first locking mechanism 100 with an inflation pressure of:

[0084] P 1 =(n×k 1 ×L 1 ) / S 1 (1)

[0085] Among them, P1 is the inflation pressure of the cylinder 110 of the first locking mechanism 100; n is the number of locking springs 130 in the cylinder 110 of the first locking mechanism 100; k 1 L is the elastic coefficient of the corresponding locking spring 130; 1 S is the retraction distance of the locking plate 120 of the first locking mechanism 100, that is, the compression amount of the locking spring 130; 1 P is the effective area of ​​the locking plate 120 that bears the air pressure. 11 is the inflation pressure of the cylinder 110 of the first locking mechanism 100, P 12 is the inflation pressure of the cylinder 110 of the second locking mechanism 200 .

[0086] After the retraction control of the locking plate 120 of the first locking mechanism 100 is completed, after a delay of t, the control module simultaneously controls the pneumatic regulating valve between the second exhaust hole 331 of the first adjusting mechanism 300 and the second adjusting mechanism 400 and the air source to be connected, and the air source provides the inflation pressure of the hollow structure of the connecting arm 330 of the first adjusting mechanism 300 and the second adjusting mechanism 400 through the pneumatic regulating valve to be:

[0087] P 2 =k 2 ×X 1 / S 2 (2)

[0088] Among them, P 2 k is the inflation pressure of the connecting arm 330 of the first adjusting mechanism 300 or the second adjusting mechanism 400; 2 is the elastic coefficient of the first return spring; 1 S is the extension length of the corresponding telescopic arm 360 relative to the connecting arm 330; 2 It is the effective area of ​​the telescopic arm 360 that withstands the air pressure.

[0089] like Figure 7 As shown, the inflation pressure in the connecting arm 330 is P 2 The telescopic arm 360 in the connecting arm 330 overcomes the pulling force of the first return spring and extends outward. 1 Under the action of the telescopic arm 360, the mirror body 600 rotates and unfolds around the contact surface between the second rotating arm 630 and the second cushion block 800. The unfolding angle refers to the angle between the mirror body 600 before unfolding and the mirror body 600 after unfolding. The mirror body 600 before unfolding refers to the mirror body 600 in a locked state. 1 for:

[0090] α 1 =2arcsin(X 1 / 2L) (3)

[0091] Wherein, L is the distance between the center of the first rotating shaft 640 and the center of the first rotating arm 620, or the distance between the center of the second rotating shaft 650 and the center of the second rotating arm 630, such as Figure 8 As shown, D is the length of the mirror body 600, and W is the width of the mirror body 600. The initial value of the deployment angle is set according to the principle of ergonomics, preferably α 1 It is 60°~120°.

[0092] Substituting formula (3) into formula (2), we get:

[0093] P 2 =2Lk 2 sin(α 1 / 2) / S 2 (4)

[0094] Step S103: When a continuous zero-speed signal is received and a forward-looking instruction is received, the locking plate 120 of the second locking mechanism 200 is controlled to retract, the locking plate 120 of the first locking mechanism 100 is extended, and the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are both extended, so that the mirror body 600 is in a forward-looking state.

[0095] The control module controls the pneumatic regulating valve between the first exhaust hole 111 of the second locking mechanism 200 and the air source to be connected. The air source provides the cylinder 110 of the second locking mechanism 200 with an inflation pressure as shown in formula (1) through the pneumatic regulating valve.

[0096] After completing the retraction control of the locking plate 120 of the second locking mechanism 200, after a delay of time t, the control module simultaneously controls the pneumatic regulating valve between the second exhaust hole 331 of the first adjusting mechanism 300 and the second adjusting mechanism 400 and the air source to be connected, and the air source provides the inflation pressure for the hollow structure of the connecting arm 330 of the first adjusting mechanism 300 and the second adjusting mechanism 400 through the pneumatic regulating valve as shown in formula (4).

[0097] The inflation pressure in the connecting arm 330 is P 2 The telescopic arm 360 in the connecting arm 330 overcomes the pulling force of the first return spring and extends outward. 1 Under the action of the telescopic arm 360, the mirror body 600 rotates and unfolds around the contact surface between the first rotating arm 620 and the first cushion block 700, and the unfolding angle is α 1 .

[0098] In steps S102 and S103, the inflation pressures can be determined according to the required deployment angle of the mirror body 600 (i.e., the deployment angle instruction), and the extension length X of the telescopic arm 360 can be adjusted. 1 , realizing pneumatic control of the mirror body's 600 degree deployment angle.

[0099] Step S104: When a continuous zero-speed signal, a rear-view command or a forward-view command, and a flipping command are received, the locking plate 120 of the first locking mechanism 100 or the second locking mechanism 200 is controlled to retract, the locking plate 120 of the second locking mechanism 200 or the first locking mechanism 100 is extended, and the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are extended, so that the mirror body 600 is in a rear-view state or a forward-view state; the locking plate 120 of the second locking mechanism 200 or the first locking mechanism 100 is controlled to retract, and the sliders 320 of the first adjustment structure and the second adjustment mechanism 400 are controlled to move to adjust the flipping angle of the mirror body 600.

[0100] When a continuous zero-speed signal, a rear-view command and a flipping command are received, the locking plate 120 of the first locking mechanism 100 is controlled to retract, and the locking plate 120 of the second locking mechanism 200 is extended. After a delay time t, the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are controlled to extend to unfold the mirror body 600, so that the mirror body 600 is in a rear-view state; then the locking plate 120 of the second locking mechanism 200 is controlled to retract, and after a delay time t, the sliders 320 of the first adjustment mechanism and the second adjustment mechanism 400 are controlled to move to adjust the flipping angle of the mirror body 600.

[0101] When a continuous zero-speed signal, a forward-looking command and a flipping command are received, the locking plate 120 of the second locking mechanism 200 is controlled to retract, and the locking plate 120 of the first locking mechanism 100 is extended. After a delay time t, the telescopic arms 360 of the connecting components of the first adjustment mechanism 300 and the second adjustment mechanism 400 are controlled to extend, and the mirror body 600 is unfolded to put the mirror body 600 in a forward-looking state; then the locking plate 120 of the first locking mechanism 100 is controlled to retract, and after a delay time t, the sliders 320 of the first adjustment mechanism and the second adjustment mechanism 400 are controlled to move to adjust the flipping angle of the mirror body 600.

[0102] In this embodiment, the delay time is set according to the elastic coefficient of the spring.

[0103] In the forward or rearward viewing state, the electrical control module controls the other extended locking plate 120 to retract, so that the first rotating arm 620 and the second rotating arm 630 of the mirror body 600 are both in a free state. After a delay time t, the pressure of the first inner cavity or the second inner cavity of the first adjustment mechanism 300 and the second adjustment mechanism 400 is controlled to control the position of the slider 320 in the housing 310, so as to realize the control of the flip angle of the mirror body 600 in the rearward or forward viewing state. In the initial state, the pressure of the first inner cavity and the second inner cavity are both 0, the second return spring 340 and the third return spring 350 are the same and are both in a free state, and the slider 320 is in the middle position of the housing 310, that is, X 2 / X3 are both 0, at which time the mirror body 600 is the mirror body 600 before flipping, and the mirror body 600 is 90° with the horizontal plane. When the corresponding first inner cavity is inflated through the third through-and-out holes of the first adjustment mechanism 300 and the second adjustment mechanism 400 at the same time, the inflation pressure acts on the slider 320, causing the slider 320 to move toward the second inner cavity, thereby compressing the third return spring 350, causing the upper side and the lower side of the mirror body 600 to move in opposite directions, thereby realizing the flipping of the mirror body 600; when the first inner cavities of the first adjustment mechanism 300 and the second adjustment mechanism 400 are exhausted through their respective third through-and-out holes, the elastic force generated by the third return spring 350 acts on the slider 320, causing the slider 320 to move toward the first inner cavity, until the slider 320 is in the middle position of the housing 310, the air pressure of the first inner cavity and the second inner cavity is 0, and the mirror body 600 returns to the state before flipping.

[0104] Similarly, when the second inner cavity is inflated through the fourth exhaust holes of the first adjustment mechanism 300 and the second adjustment mechanism 400 at the same time, the inflation pressure acts on the slider 320, causing the slider 320 to move toward the first inner cavity, thereby compressing the second return spring 340, causing the upper and lower sides of the mirror body 600 to move in opposite directions, thereby realizing the flipping of the mirror body 600; when the second inner cavities of the first adjustment mechanism 300 and the second adjustment mechanism 400 are exhausted through their respective fourth exhaust holes, the elastic force generated by the second return spring 340 acts on the slider 320, causing the slider 320 to move toward the second inner cavity, until the slider 320 is in the middle position of the outer shell 310, the air pressure in the first inner cavity and the second inner cavity is 0, and the mirror body 600 returns to the state before flipping.

[0105] like Fig. 9 As shown, when the slider 320 on the upper side of the mirror body 600 moves to the right and the slider 320 on the lower side of the mirror body 600 moves to the left, the mirror body 600 is positively flipped, and the flip angle is α 2 , the displacement of the slider 320 is X 2 When the slider 320 on the upper side of the mirror body 600 moves to the left and the slider 320 on the lower side of the mirror body 600 moves to the right, the mirror body 600 is negatively flipped, and the flip angle is -α 2 , the displacement of the slider 320 is X 3 .

[0106] When adjusting the flip angle of the mirror body 600, the inflation pressure of the first inner cavity or the second inner cavity of the first adjustment mechanism 300 and the second adjustment mechanism 400 is:

[0107] P 3 =2k 3 X 2 / S 3 or P 3 =2k 3 X 3 / S3 (5)

[0108] Among them, P 3 k is the inflation pressure of the first inner cavity or the second inner cavity; 3 is the elastic coefficient of the second return spring 340 or the third return spring 350; X 2 , X 3 is the displacement of the slider 320; S 3 It is the effective area of ​​the slider 320 that withstands the air pressure.

[0109] Inflate the first inner cavity or the second inner cavity of the first adjustment mechanism 300 or the second adjustment mechanism 400 with gas P 3 The slider 320 is subjected to pressure and moves against the elastic force of the second return spring 340 or the third return spring 350, and the upper slider 320 and the lower slider 320 slide relative to each other to form a flip angle α. 2 for:

[0110] α 2 =arctan(2X 2 / W) or α 2 =arctan(2X 3 / W) (6)

[0111] Wherein, W is the width of the mirror body 600, such as Figure 8 shown.

[0112] Substituting formula (6) into formula (5), we get:

[0113] P 3 =k 3 Wtanα 2 / S 3 (7)

[0114] Among them, P 3 k is the inflation pressure of the first inner cavity or the second inner cavity; 3 is the elastic coefficient of the second return spring 340 or the third return spring 350; W is the width of the mirror body 600; α 2 S is the flip angle of the mirror body 600, that is, the angle between the mirror body 600 before flipping and the mirror body 600 after flipping; 3 P is the effective area of ​​the slider 320 of the first adjustment mechanism 300 or the second adjustment mechanism 400 that withstands the air pressure. 31 is the inflation pressure of the first inner cavity, P 32 is the inflation pressure of the second inner cavity.

[0115] The rearview mirror device of the present invention sequentially disconnects the flip command (A signal), the unfolding angle command (i.e., α 1Adjustment command, D signal), forward or backward command (ON signal) to reset:

[0116] When the control module continuously receives the V0 signal (i.e., zero speed signal), the ON signal, the D signal, and the disconnection A signal, the control module controls the third exhaust hole or the fourth exhaust hole to open, removes the air pressure in the first inner cavity or the second inner cavity of the first adjustment mechanism 300 and the second adjustment mechanism 400, and the slider 320 returns to the initial position (i.e., the middle position of the housing 310) under the action of the second return spring 340 or the third return spring 350, and the flip angle of the mirror body 600 is 0;

[0117] When the control module continuously receives the V0 signal, the ON signal, the disconnect A signal, and the disconnect D signal, the control module controls the second air vent 331 to open, removes the air pressure in the connecting arm 330 of the first adjustment mechanism 300 and the second adjustment mechanism 400, and the mirror body 600 is retracted to the side 500 of the vehicle body under the action of the first return spring and the telescopic arm 360, and the unfolding angle of the mirror body 600 is 0;

[0118] When the control module continuously receives the V0 signal, the A and D signals are disconnected, and the ON signal is disconnected, the control module controls the first exhaust hole 111 to open, and the air pressure in the cylinder 110 of the first locking mechanism 100 and / or the second locking mechanism 200 is eliminated. The locking plate 120 slides out of the travel L under the action of the locking spring 130. 1 , the first rotating arm 620 and the second rotating arm 630 are clamped, and the mirror body 600 is in a reset state.

[0119] When the V0 signal of the control module is disconnected, the pneumatic control valve loses power and the mirror body 600 is in a locked state.

[0120] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A rearview mirror device, used in rail vehicles, It is characterized in that The device includes a rearview mirror assembly and a control module; The rearview mirror assembly includes a mirror body, and a first locking mechanism, a second locking mechanism, a first adjusting mechanism, a second adjusting mechanism, a first cushion block and a second cushion block arranged on the side of the vehicle body; the mirror body includes a mirror surface, a first rotating arm and a second rotating arm respectively arranged on the left and right sides of the mirror surface, and a first rotating shaft and a second rotating shaft respectively arranged on the upper and lower sides of the mirror surface; the first rotating shaft is arranged in the shaft hole of the connecting component of the first adjusting mechanism, and the second rotating shaft is arranged in the shaft hole of the connecting component of the second adjusting mechanism; The control module is used to control the extension or retraction of the locking plate of the first locking mechanism and / or the second locking mechanism, and control the extension or retraction of the connecting assembly of the first adjusting mechanism and the second adjusting mechanism, so as to realize the control of the mirror body being in a locked state, a rear-view state or a front-view state; when the mirror body is in a locked state, the first rotating arm is located between the locking plate of the first locking mechanism and the first cushion block, and the second rotating arm is located between the locking plate of the second locking mechanism and the second cushion block; when the mirror body is in a rear-view or front-view state, the second rotating arm is located between the locking plate of the second locking mechanism and the second cushion block, or the first rotating arm is located between the locking plate of the first locking mechanism and the first cushion block; The control module includes an air source and an electrical control module; the air source is respectively connected to the ventilation holes of the first locking mechanism, the second locking mechanism, the first regulating mechanism and the second regulating mechanism, and a pneumatic regulating valve is provided on the pipeline between the air source and each ventilation hole; the electrical control module is electrically connected to the pneumatic regulating valve; The electrical control module controls the locking plates of the first locking mechanism and the second locking mechanism, and the connecting components of the first regulating mechanism and the second regulating mechanism by controlling the pneumatic regulating valves; The first locking mechanism and the second locking mechanism each comprise a cylinder body, a locking plate and at least one locking spring; the first end of the locking plate is disposed in the cylinder body, and the second end extends out of the cylinder body; one end of each locking spring is connected to the first end of the locking plate, and the other end is connected to the inner wall of the cylinder body; the cylinder body is provided with a first exhaust hole for communicating with the air source; The first adjustment mechanism and the second adjustment mechanism both include a housing, a slider and a connecting assembly; The slider is arranged in the shell; the connecting assembly includes a connecting arm, a telescopic arm and a first return spring, the first end of the connecting arm is connected to the slider, and the second end thereof extends to the outside of the shell and is a hollow structure; the first end of the telescopic arm is located in the hollow structure, the second end of the telescopic arm extends to the outside of the hollow structure and is provided with the axial hole, one end of the first return spring is fixed to the first end of the telescopic arm, and the other end is fixed in the hollow structure; a second exhaust hole for communicating with the air source is provided on the hollow structure.

2. The rearview mirror device according to claim 1, Features: The slider divides the inner cavity of the shell into a first inner cavity and a second inner cavity, a second return spring is arranged in the first inner cavity, and two ends of the second return spring are respectively connected to the end surface of the shell and the slider, and a third return spring is arranged in the second inner cavity, and two ends of the third return spring are respectively connected to the end surface of the shell and the slider; A third exhaust hole and a fourth exhaust hole for communicating with the gas source are respectively provided on the outer shell, the third exhaust hole is used to inflate and exhaust the first inner cavity, and the fourth exhaust hole is used to inflate and exhaust the second inner cavity.

3. The rearview mirror device according to claim 1 or 2, Features: The control module is also used to control the retraction of the extended locking plate when the mirror body is in the rear-view state or the front-view state, and control the movement of the sliders of the first adjustment mechanism and the second adjustment mechanism, so as to realize the control of the flipping angle of the mirror body in the rear-view state or the front-view state.

4. The rearview mirror device according to claim 1 or 2, Features: The first cushion block and the second cushion block are both provided with grooves matching the shapes of the first rotating arm and the second rotating arm; the first rotating arm and the second rotating arm are both cylindrical.

5. The rearview mirror device according to claim 1 or 2, Features: The mirror surface is a mirror surface that is light-transmissive on the outside and light-reflective on the inside; wherein the inside refers to the side close to the vehicle body when the mirror body is in a locked state.

6. A method for controlling a rearview mirror device according to any one of claims 1 to 5, It is characterized in that The method comprises the following steps: When no continuous zero-speed signal is received, the locking plates of the first locking mechanism and the second locking mechanism are controlled to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are controlled to retract, so that the mirror body is in a locked state; When a continuous zero-speed signal and a rear-view command are received, the locking plate of the first locking mechanism is controlled to retract, the locking plate of the second locking mechanism is controlled to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are both extended, so that the mirror body is in a rear-view state; When a continuous zero-speed signal and a forward-looking command are received, the locking plate of the second locking mechanism is controlled to retract, the locking plate of the first locking mechanism is extended, and the connecting components of the first adjustment mechanism and the second adjustment mechanism are extended, so that the mirror body is in a forward-looking state.

7. The control method of the rearview mirror device according to claim 6, It is characterized in that When the locking plate is retracted, the inflation pressure of the cylinder of the first locking mechanism or the second locking mechanism is: P 1 =(n×k 1 ×L 1 ) / S 1 Among them, P 1 is the inflation pressure of the cylinder of the first locking mechanism or the second locking mechanism; n is the number of locking springs in the corresponding cylinder; k 1 is the elastic coefficient of the corresponding locking spring; L 1 is the retraction distance of the corresponding locking plate; S 1 It is the effective area of ​​the corresponding locking plate that withstands the air pressure.

8. The control method of the rearview mirror device according to claim 6, It is characterized in that When the extension control of the connecting assembly is performed, the inflation pressure of the connecting arms of the first adjusting mechanism and the second adjusting mechanism are both: P 2 =2Lk 2 sin(α 1 / 2) / S 2 Among them, P 2 is the inflation pressure of the connecting arm of the first adjusting mechanism or the second adjusting mechanism; L is the distance between the center of the first rotating shaft and the center of the first rotating arm, or the distance between the center of the second rotating shaft and the center of the second rotating arm; k 2 is the elastic coefficient of the first return spring; 1 is the unfolding angle of the mirror body; S 2 It is the effective area of ​​the telescopic arm that withstands the air pressure.

9. The control method of the rearview mirror device according to any one of claims 6 to 8, It is characterized in that The method further includes, when receiving a continuous zero speed signal, a rear view command or a forward view command, and a flip command, controlling the locking plate of the first locking mechanism or the second locking mechanism to retract, the locking plate of the second locking mechanism or the first locking mechanism to extend, and the connecting components of the first adjustment mechanism and the second adjustment mechanism to extend, so that the mirror body is in a rear view state or a forward view state; The extended locking plate is controlled to retract, and the sliders of the first adjustment structure and the second adjustment mechanism are controlled to move, so as to adjust the flipping angle of the mirror body.

10. The control method of the rearview mirror device according to claim 9, It is characterized in that When adjusting the flip angle of the mirror body, the inflation pressure of the first inner cavity or the second inner cavity of the first adjustment mechanism and the second adjustment mechanism is: P 3 =k 3 Wtanα 2 / S 3 Among them, P 3 k is the inflation pressure of the first inner cavity or the second inner cavity; 3 is the elastic coefficient of the second return spring or the third return spring; W is the width of the mirror body; α 2 is the flip angle of the mirror; S 3 It is the effective area of ​​the slider of the first regulating mechanism or the second regulating mechanism that withstands the air pressure.

11. The control method of the rearview mirror device according to claim 6, It is characterized in that The first locking mechanism and / or the second locking mechanism are controlled first, and then the first adjusting mechanism and the second adjusting mechanism are controlled after a delay.

12. A rail vehicle, Features: Recessed areas are provided on both sides of the vehicle body, and a rearview mirror device as claimed in any one of claims 1 to 5 is provided in the recessed areas; when the mirror body of the rearview mirror device is in a locked state, the rearview mirror device is flush with the side of the vehicle body.

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