Vehicle wiper system and rail vehicle

Abstract

The present invention provides a vehicle wiper system, which includes: a wiper blade, a scraper rod, a transmission shaft, and a motor; the wiper blade is used to wipe away raindrops on the vehicle window glass; the first end of the scraper rod is connected to the scraper blade, the second end of the scraper rod is tightly connected to the first end of the transmission shaft, and the second end of the transmission shaft is transmission-connected to the motor shaft of the motor; the motor is used to drive the transmission shaft to rotate forward or reverse to drive the scraper blade to reciprocate on the vehicle window glass. A rail vehicle includes the above-mentioned vehicle wiper system. The vehicle wiper system and rail vehicle provided by the present invention use a motor and a transmission shaft transmission-connected to the motor as a driving mechanism to drive the scraper rod and the scraper strip to move, and the scraper blade is driven to reciprocate by the forward and reverse rotation of the motor. Since the forward and reverse rotation of the motor is controlled by a control signal, the reciprocating stroke of the scraper blade no longer needs to be realized by a complex mechanical structure, thereby avoiding the jamming phenomenon of the connecting rod mechanism and improving the service life of the wiper system.

Description

Technical Field

[0001] The invention relates to the field of vehicle manufacturing, and in particular to a vehicle windshield wiper system and a rail vehicle. Background Art

[0002] The wiper system in the vehicle is used to control the wiper rod to drive the wiper blade to move on the windshield, scraping off raindrops and dust attached to the vehicle, improving the driver's visibility and increasing driving safety.

[0003] In the related art, the windshield wiper system includes a permanent magnet DC motor, a fixed frame, a connecting rod mechanism, a wiper rod and a wiper strip. The motor is connected to the connecting rod mechanism, and the connecting rod mechanism includes a first connecting rod, a second connecting rod and a third connecting rod. The motor shaft of the motor is connected to the first connecting rod, and the first connecting rod can rotate around the axis of the motor shaft. The first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is connected to one end of the third connecting rod through an axle pin. The connecting rod mechanism and the permanent magnet DC motor are fixed to the fixed frame. An arc-shaped through hole is provided on the fixed frame, and the axle pin connecting the second connecting rod and the third connecting rod extends into the arc-shaped through hole and can slide in the arc-shaped through hole. The third connecting rod performs a fan-shaped motion around the axle pin located at the center of the arc-shaped through hole on the fixed frame. The shaft of the permanent magnet DC motor rotates clockwise or counterclockwise, driving the first connecting rod to rotate around the axis of the permanent magnet DC motor, and the first connecting rod drives the second connecting rod to move. When the second connecting rod moves to one side to the maximum value, the shaft pin connecting the second connecting rod and the third connecting rod abuts against one end point of the arc-shaped through hole, and the second connecting rod no longer follows the movement of the first connecting rod until the first connecting rod rotates to an extreme position, and the second connecting rod moves to the other end point of the arc-shaped through hole driven by the first connecting rod. In this way, the scraper rod is driven by the permanent magnet DC motor to move in a fan-shaped manner, and the scraper rod drives the scraper blade to move on the windshield to achieve scraping and brushing.

[0004] However, in the above-mentioned wiper system, the reciprocating motion of the wiper blade needs to be achieved through the cooperation of a permanent magnet DC motor and a connecting rod mechanism. However, the connection between the first connecting rod and the second connecting rod, and the connection between the second connecting rod and the third connecting rod of the connecting rod mechanism will deform after long-term use, causing the connecting rod mechanism to get stuck, resulting in damage to the wiper system and shortening the service life of the wiper system. Summary of the invention

[0005] The invention provides a vehicle windshield wiper system and a rail vehicle, which solves the problem that a connecting rod mechanism of the existing vehicle windshield wiper system is easily stuck and causes damage to the windshield wiper system.

[0006] The present invention provides a vehicle windshield wiper system, comprising: a wiper blade, a wiper rod, a transmission shaft, and a motor;

[0007] The scraper is used to wipe away raindrops on the vehicle window glass;

[0008] The first end of the scraper rod is connected to the scraper blade, the second end of the scraper rod is tightly connected to the first end of the transmission shaft, and the second end of the transmission shaft is transmission-connected to the motor shaft of the motor;

[0009] The motor is used to drive the transmission shaft to rotate forward or reversely to drive the wiper blade to perform reciprocating motion on the vehicle window glass.

[0010] Optionally, the vehicle wiper system provided by the present invention further includes a reducer, wherein the input end of the reducer is drivingly connected to the motor shaft of the motor, and the output shaft of the reducer is tightly connected to the second end of the transmission shaft.

[0011] Optionally, the vehicle wiper system provided by the present invention further includes a coupling, and the motor and the second end of the transmission shaft are fastened to each other via the coupling.

[0012] Optionally, the vehicle wiper system provided by the present invention further includes a reducer and a coupling, the motor shaft of the motor is transmission-connected to the input end of the reducer, and the output shaft of the reducer is fastened to the second end of the transmission shaft through the coupling.

[0013] Optionally, the vehicle wiper system provided by the present invention further includes a support frame, the coupling is installed inside the support frame, the motor and the reducer are located outside the support frame, the output shaft of the reducer passes through the support frame and is fastened to the coupling, the transmission shaft passes through the support frame and is fastened to the coupling, and the transmission shaft and the reducer are respectively arranged on opposite sides of the coupling.

[0014] Optionally, in the vehicle wiper system provided by the present invention, the motor is electrically connected to a drive circuit module, and the drive circuit module is used to drive the motor.

[0015] Optionally, the vehicle wiper system provided by the present invention further includes a control assembly, which includes a control switch and a control chip, the control chip is electrically connected to the drive circuit module, the control chip is electrically connected to the control switch, and the control chip sends a control signal to the drive circuit module according to the control instruction input by the control switch.

[0016] Optionally, in the vehicle wiper system provided by the present invention, the control switch includes a knob, and the knob is used to input at least two control instructions for controlling the wiper blade rotation speed into the control chip.

[0017] Optionally, in the vehicle wiper system provided by the present invention, the wiper blade includes a brush strip and a bracket, the brush strip is used to contact the windshield, the first end of the bracket is fastened to the brush strip, and the second end of the bracket is rotatably connected to the scraper rod; and / or the motor is a stepping motor.

[0018] The present invention also provides a rail vehicle, comprising a vehicle body and the vehicle windshield wiper system as described above.

[0019] The vehicle wiper system and rail vehicle provided by the present invention drive the wiper blade to reciprocate by the forward and reverse rotation of the motor, and use the friction between the wiper blade and the vehicle window glass to wipe away raindrops on the vehicle window glass. Each stroke of the wiper blade is realized by the control signal of the motor, avoiding the jamming phenomenon of the connecting rod mechanism and prolonging the service life of the wiper system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is a schematic structural diagram of a vehicle windshield wiper system provided by Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of a wiper blade structure in a vehicle windshield wiper system provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a vehicle windshield wiper system provided by Embodiment 2 of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a vehicle windshield wiper system provided by Embodiment 3 of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a vehicle windshield wiper system provided by Embodiment 4 of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a vehicle windshield wiper system provided by Embodiment 5 of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a vehicle windshield wiper system provided by Embodiment 6 of the present invention;

[0028] Figure 8 This is a schematic diagram of the control switch structure in a vehicle wiper system provided by Embodiment 6 of the present invention.

[0029] Description of reference numerals:

[0030] 1- Scraper;

[0031] 11-Brush bar;

[0032] 12-Stand;

[0033] 121-main support;

[0034] 122- auxiliary bracket;

[0035] 2- Scraping rod;

[0036] 3- Transmission shaft;

[0037] 4- Motor;

[0038] 5- reducer;

[0039] 6-Coupling;

[0040] 7- Support frame;

[0041] 8- driving circuit module;

[0042] 9-Control assembly

[0043] 91-control chip

[0044] 92-Control switch

[0045] 921-knob;

[0046] 922-Control Panel. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0048] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] The automotive wiper system uses a permanent magnet DC motor to drive the connecting rod to move, and uses the connecting rod to drive the wiper rod to move in a fan-shaped motion on the car window glass, driving the wiper blade to move back and forth on the car window glass to wipe away raindrops on the car window glass. However, the joints of the connecting rod mechanism are easily deformed during long-term movement, causing the connecting rod mechanism to get stuck, resulting in damage to the wiper system and shortening the service life of the wiper system.

[0050] In order to solve the above defects, the present invention adopts another mechanism to replace the above connecting rod transmission mechanism, so as to avoid the damage of the wiper system caused by the connecting rod being stuck. Specifically, a motor that can rotate forward and reverse is used, and the scraper blade is installed on the motor shaft of the motor through the scraper rod and the transmission shaft, so that when the motor rotates forward and reverse, the scraper blade can reciprocate on the glass to scrape off the raindrops on the car window glass. Since the forward and reverse rotation of the motor is controlled by a control signal, the whole system will not be stuck, thereby improving the service life of the system.

[0051] Embodiment 1

[0052] Figure 1 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment, Figure 2 FIG. 1 is a schematic diagram of a wiper blade structure in a vehicle windshield wiper system provided in this embodiment. Figure 1-Figure 2 As shown, the vehicle windshield wiper system provided in this embodiment comprises: a wiper blade 1, a wiper rod 2, a transmission shaft 3, and a motor 4. The wiper blade 1 is used to wipe away raindrops on the vehicle window glass.

[0053] Exemplarily, the scraper blade 1 includes a brush strip 11 and a bracket 12, the brush strip 11 is used to contact the windshield, a first end of the bracket 12 is fastened to the brush strip 11, and a second end of the bracket 12 is rotatably connected to the scraper rod 2;

[0054] The brush strip 11 may be a rubber strip or a bristle brush strip 11. The present embodiment does not limit the specific structure of the brush strip 11, as long as the structure can brush away raindrops on the surface of the vehicle window glass when moving on the vehicle window glass.

[0055] The brush strip 11 and the bracket 12 can be connected in a variety of ways, for example, flanges are provided on both sides of the end of the brush strip 11 connected to the bracket 12, and grooves are provided on both sides of the first end of the bracket 12, and the flanges are embedded in the grooves. The connection method between the brush strip 11 and the bracket 12 is not limited in this embodiment, as long as the connection method can fasten the brush strip 11 and the bracket 12.

[0056] It should be understood that the second end of the bracket 12 and the scraper rod 2 can be rotatably connected in a variety of ways. For example, the second end of the bracket 12 and the scraper rod 2 can be connected by a shaft pin.

[0057] Furthermore, the first end surface of the bracket 12 is set as a movable surface. For example, the bracket 12 includes a main bracket 121 and two auxiliary brackets 122. The first end of the main bracket 121 is respectively connected to the second ends of the two auxiliary brackets 122 by axle pins on both sides. The second end of the main bracket 121 is rotatably connected to the scraper rod 2, and the first ends of the two auxiliary brackets 122 are respectively connected to the two sides of the brush strip 11. By setting the first end surface of the bracket 12 as a movable surface, the brush strip 11 can be better fitted to the window glass, and a gap between the brush strip 11 and the window glass can be prevented.

[0058] By fastening the first end of the bracket 12 to the brush strip 11 and rotatably connecting the second end of the bracket 12 to the scraper rod 2, the scraper blade 1 and the window glass can be more closely fitted to avoid a gap between the scraper blade 1 and the window glass that causes poor brushing.

[0059] The first end of the scraper rod 2 is connected to the scraper blade 1, and the second end of the scraper rod 2 is tightly connected to the first end of the transmission shaft 3. In some feasible embodiments, the first end of the scraper rod 2 is fixedly connected to an axle pin seat, and the first end of the scraper rod 2 is connected to the scraper blade 1 axle pin through the axle pin seat. The second end of the scraper rod 2 is provided with a hole groove, and the first end of the transmission shaft 3 is inserted into the hole groove at the second end of the scraper rod 2. A variety of connection methods can be used between the scraper rod 2 and the transmission shaft 3, for example, threaded connection or interference connection, etc. This embodiment does not limit the connection method between the scraper rod 2 and the transmission shaft 3.

[0060] The second end of the transmission shaft 3 is in transmission connection with the motor shaft of the motor 4. In some implementations, the transmission shaft 3 is a multi-stage transmission shaft, that is, the shaft diameter of the first end of the transmission shaft 3 is smaller than the shaft diameter of the second end of the transmission shaft 3, and at least one shaft shoulder is provided in the middle of the transmission shaft 3. The second end of the transmission shaft 3 and the motor shaft of the motor 4 can be connected in a variety of ways, for example, by welding. This embodiment does not limit the connection method of the second end of the transmission shaft 3 and the motor shaft of the motor 4.

[0061] In some possible implementations, the transmission shaft 3 is provided with a shoulder near the first end, the vehicle body is provided with a through hole, the first end of the transmission shaft 3 passes through the through hole to connect with the scraper rod 2, and the shoulder of the transmission shaft 3 abuts against the through hole of the vehicle body. Optionally, the first end of the transmission shaft 3 is detachably connected to the second end of the scraper rod 2, for example, the second end of the scraper rod 2 is provided with a hole groove, the inside of the hole groove is provided with a thread, the first end of the transmission shaft 3 is provided with an external thread, and the internal thread provided on the groove wall of the hole groove is threadedly connected with the external thread provided on the first end of the transmission shaft 3. It should be noted that the connection method for the scraper rod 2 and the transmission shaft 3 is not restrictive. In some other examples, as long as the connection method satisfies the requirements of fixing the scraper rod 2 and the transmission shaft 3, the transmission shaft 3 drives the scraper rod 2 to rotate synchronously around the axis of the transmission shaft 3 when the transmission shaft 3 rotates.

[0062] Exemplarily, the scraper rod 2 and the transmission shaft 3 are an integrated structure similar to an "L" shape, one end of the "L" structure is connected to the scraper blade 1, and the other end of the "L" structure is connected to the motor shaft of the motor 4. When the scraper rod 2 and the transmission shaft 3 are an integrated structure, the uneven movement of the scraper rod caused by the loose connection between the scraper rod and the transmission shaft is avoided. Similarly, the scraper rod 2 and the transmission shaft 3 are not restrictive to adopt an integrated structure. In some other examples, a split structure can also be used and assembled together.

[0063] The motor 4 includes a power receiving end, a body and a motor shaft. The motor body is connected to the power receiving end, and the motor shaft of the motor extends out of the motor body. When the motor power receiving end receives different signals, the motor shaft of the motor 4 can rotate forward or reverse, which is used to drive the transmission shaft 3 to rotate forward or reverse, so as to drive the wiper blade 1 to reciprocate on the vehicle window glass.

[0064] Exemplarily, the motor 4 is located inside the vehicle body and is drivingly connected to the second end of the transmission shaft 3. The first end of the transmission shaft 3 passes through the vehicle body and is fastened to the second end of the scraper rod 2. The first end of the transmission shaft 3 is located at the bottom of the vehicle window glass.

[0065] When the vehicle windshield wiper system provided in this embodiment is working, the motor shaft of the motor 4 rotates around the axis. For example, the motor shaft of the motor 4 rotates forward, and the motor shaft of the motor 4 is connected to the second end of the transmission shaft 3, driving the transmission shaft 3 and the motor shaft of the motor 4 to rotate synchronously; the first end of the transmission shaft 3 is tightly connected to the second end of the scraper rod 2, and when the transmission shaft 3 rotates, the scraper rod 2 is driven to rotate around the axis of the transmission shaft 3; the first end of the scraper rod 2 is connected to the scraper blade 1, and when the scraper rod 2 rotates around the axis of the transmission shaft 3, the scraper blade 1 is driven to move. When the scraper blade 1 moves to the end point, the motor shaft of the motor 4 rotates in the reverse direction again, driving the transmission shaft 3 to rotate in the reverse direction around the axis. When the transmission shaft 3 moves, it drives the scraper rod 2 to rotate in the reverse direction around the axis of the transmission shaft 3, and the scraper rod 2 drives the scraper blade 1 to move in the reverse direction. In the process of continuous forward and reverse rotation, the motor shaft of the motor 4 drives the scraper blade 1 to reciprocate on the vehicle window glass to achieve scraping.

[0066] Based on the above, it can be known that the vehicle wiper system of the present embodiment adopts a motor capable of forward and reverse rotation and a transmission shaft connected to the motor as a driving mechanism to replace the driving mechanism composed of a permanent magnet DC motor and a connecting rod mechanism adopted in the related art. Since the motor of the present embodiment can be controlled to rotate forward and reverse by a control signal, thereby driving the transmission shaft connected to the motor to rotate forward and reverse, and then driving the scraper rod fastened to the transmission shaft and the scraper strip connected to the scraper rod to perform reciprocating motion, there is no need to use a complex mechanical coordination method such as a connecting rod mechanism to realize the scraping of the vehicle window glass by the scraper strip. Therefore, the jamming phenomenon caused by the deformation of the joint part of the connecting rod mechanism when the scraper rod 2 is driven by the connecting rod mechanism can be avoided, so as to improve the service life of the vehicle wiper system.

[0067] Embodiment 2

[0068] Figure 3 FIG. 1 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment. Figure 3 As shown, on the basis of the first embodiment, further, a reducer 5 is included, the input end of the reducer 5 is drivingly connected to the motor 4 shaft of the motor 4, and the output shaft of the reducer 5 is fastened to the second end of the transmission shaft 3.

[0069] Among them, under the condition of the same output power, the speed is inversely proportional to the torque. Adding the reducer 5 slows down the speed, that is, increases the torque. The present embodiment does not limit the structure of the reducer 5, as long as the reducer 5 can reduce the speed and increase the torque. For example, the reducer 5 can use a worm gear reducer.

[0070] Exemplarily, the worm gear reducer includes a worm wheel and a worm, the axes of the worm wheel and the worm are perpendicular to each other, the shaft diameter of the worm wheel is larger than the shaft diameter of the worm, the worm wheel and the worm are meshed with each other, and one end of the worm is connected to the motor shaft of the motor 4 as the input end of the reducer 5. It should be understood that the input end of the reducer 5 and the motor shaft of the motor 4 can be connected in a variety of ways, for example, a key connection. This embodiment does not limit the connection method between the input end of the reducer 5 and the motor shaft of the motor 4.

[0071] When the motor shaft of the motor 4 drives the worm to rotate, the worm and the worm wheel are meshed, and the worm drives the worm wheel to rotate. Since the shaft diameter of the worm wheel is larger than the shaft diameter of the worm, the rotation speed of the worm wheel is slower than the rotation speed of the worm. The output shaft is connected to the middle of the worm wheel to ensure that the axis of the worm wheel and the axis of the output shaft are on the same straight line. Similarly, the worm wheel and the output shaft can be connected in a variety of ways, for example, key connection. This embodiment does not limit the connection method between the worm wheel and the output shaft.

[0072] Furthermore, the reduction ratio of the reducer 5 is calculated based on the friction coefficient between the wiper blade 1 and the window glass. For example, the reduction ratio of the reducer 5 is 1:10. When the friction coefficient between the wiper blade 1 and the window glass is different, the reducer 5 with a different reduction ratio can be replaced.

[0073] In this embodiment, a reducer 5 is added between the motor 4 and the transmission shaft 3 to increase the output torque, so that even if a motor 4 with relatively small power is used, the transmission shaft 3 can be easily driven to rotate forward or reverse, thereby driving the wiper blade 1 to reciprocate on the window glass.

[0074] Embodiment 3

[0075] Figure 4 FIG. 1 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment. Figure 4As shown, on the basis of the first embodiment, further, a coupling 6 is included, and the motor 4 and the second end of the transmission shaft 3 are fastened and connected through the coupling. The type of the coupling 6 is not limited in this embodiment, as long as the coupling 6 can fasten and connect the motor 4 and the second end of the transmission shaft 3, for example, the coupling 6 uses a diaphragm coupling.

[0076] Exemplarily, the diaphragm coupling includes at least one diaphragm and two shaft seats. The diaphragm can be fastened between the two shaft seats with pins. Due to the elasticity of the diaphragm, there can be a certain angle deviation between the axes of the two shaft seats. The motor shaft of the motor 4 is connected to one shaft seat, and the second end of the transmission shaft 3 is connected to another shaft seat. The use of a diaphragm coupling to connect the motor shaft and the transmission shaft 3 can ensure that when there is an angle within a certain range between the axis of the motor shaft and the axis of the transmission shaft 3, the motor shaft and the transmission shaft 3 can rotate synchronously. The range of the angle is determined by the number of diaphragms and the elasticity and thickness of a single diaphragm.

[0077] It should be understood that the shaft seat and the motor shaft or transmission shaft 3 can be connected in a variety of ways, for example, they can be fixed by screws. During installation, the transmission shaft 3 or the motor shaft is inserted into the shaft seat, and after being fixed, the screws are tightened, and the shaft seat holds the transmission shaft 3 or the motor shaft tightly. This embodiment does not limit the connection method between the shaft seat and the transmission shaft or the motor shaft, as long as the connection method can achieve a tight connection between the shaft seat and the motor shaft or the transmission shaft.

[0078] In this embodiment, the motor 4 and the transmission shaft 3 are fastened together by the coupling 6, so that the motor 4 and the transmission shaft 3 are easy to disassemble and it is easier to replace the parts of the vehicle wiper system when they are damaged. At the same time, when there is a certain angle between the motor shaft axis of the motor 4 and the axis of the transmission shaft 3, the use of the coupling 6 to fasten the motor shaft of the motor 4 and the transmission shaft 3 can ensure that when the motor shaft of the motor 4 rotates, it can also drive the transmission shaft 3 to rotate synchronously.

[0079] Embodiment 4

[0080] Figure 5 FIG. 1 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment. Figure 5 As shown, on the basis of embodiment 1, it further includes a reducer 5 and a coupling, the motor shaft of the motor 4 is transmission-connected to the input end of the reducer 5, and the output shaft of the reducer 5 is fastened to the second end of the transmission shaft 3 through the coupling.

[0081] The present embodiment does not limit the structure of the reducer 5, as long as the reducer 5 can reduce the rotation speed and increase the torque. For example, a worm reducer can be used for the reducer 5. For the structure of the worm reducer, please refer to the above embodiment, which will not be described in detail in the present embodiment.

[0082] Further, the reduction ratio of the reducer 5 is calculated based on the friction coefficient between the wiper blade 1 and the window glass. For example, the reduction ratio of the reducer 5 is 1:10. The type of the coupling 6 is not limited in this embodiment, as long as the coupling 6 can fasten the motor 4 and the second end of the transmission shaft 3. For example, the coupling 6 uses a diaphragm coupling. For the structure of the diaphragm coupling, please refer to the above embodiment, and this embodiment will not be repeated here.

[0083] In this embodiment, a reducer 5 and a coupling 6 are added between the motor 4 and the transmission shaft 3. The use of the reducer 5 increases the output torque, so that even if a motor 4 with a relatively small power is used, the transmission shaft 3 can be easily driven to rotate forward or reverse, so as to drive the scraper 1 to reciprocate on the window glass. At the same time, the coupling 6 is used to fasten the output shaft of the reducer 5 with the transmission shaft 3, which is not only convenient for disassembly and assembly, but also, if the axis of the output shaft of the reducer 5 and the axis of the transmission shaft 3 have an angle within a certain range, the coupling 6 is used to connect the two, so that the transmission shaft 3 and the output shaft of the reducer 5 can be ensured to rotate synchronously.

[0084] Embodiment 5

[0085] Figure 6 FIG. 1 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment. Figure 6 As shown, on the basis of embodiment 4, it also includes a support frame 7, a coupling 6 is installed inside the support frame 7, the motor 4 and the reducer 5 are located outside the support frame 7, the output shaft of the reducer 5 passes through the support frame 7 and is fastened to the coupling 6, the transmission shaft 3 passes through the support frame 7 and is fastened to the coupling, and the transmission shaft 3 and the reducer 5 are respectively arranged on opposite sides of the coupling.

[0086] Exemplarily, the motor 4 and the reducer 5 are detachably connected to the support frame 7, respectively, for easy replacement. For example, the motor 4 is connected to the support frame 7 by screws, and the reducer 5 is connected to the support frame 7 by screws. Of course, the manner in which the motor 4 and the support frame 7 are detachably connected by screws is not restrictive, and in other examples, a snap connection or other detachable connection manner may also be used.

[0087] In some possible implementations, through holes are respectively provided on opposite sides of the support frame 7. After the reducer 5 is fixed on the side of the support frame 7, the output shaft of the reducer 5 passes through the through hole on one side and is fastened to the coupling 6, and the transmission shaft 3 passes through the through hole on the other side of the support frame 7 and is fastened to the coupling 6. The structure of the support frame 7 can be in various forms. For example, the support frame 7 can be a square box structure, the coupling 6 is located inside the box, the output shaft of the reducer 5 and the transmission shaft 3 pass through opposite sides of the box, such as the top surface and the bottom surface, respectively, and the output shaft of the reducer 5 is fastened to opposite sides of the coupling 6; or, the support frame 7 includes two support plates, the two support plates are arranged in parallel, the two support plates are connected together by a support column located between the two support plates, the coupling 6 is located in the two support plates, the reducer 5 and the motor 4 are located on one of the support plates, the output shaft of the reducer 5 passes through the support plate and is fastened to one side of the coupling 6, and the transmission shaft 3 passes through the other support plate and is fastened to the other side of the coupling 6. It should be understood that the above structure of the support frame 7 is not restrictive. In some other examples, the support frame 7 may also be other structures, as long as the coupling 6 is located inside the structure and can fix the reducer 5 and the motor 4.

[0088] In this embodiment, the motor 4 and the reducer 5 can be fixed by the support frame 7. At the same time, the coupling 6 is placed inside the support frame 7 to protect the coupling 6 from being bumped.

[0089] Embodiment 6

[0090] Figure 7 is a schematic diagram of the structure of a vehicle windshield wiper system provided in this embodiment, Figure 8 FIG. 1 is a schematic diagram of a control switch structure in a vehicle windshield wiper system provided in this embodiment. Figure 7-Figure 8 As shown, based on the above embodiment, the motor 4 is electrically connected to the drive circuit module 8 , and the drive circuit module 8 is used to drive the motor 4 .

[0091] For example, the drive circuit module 8 can provide a control signal, such as a PWM signal, to the motor 4 to control the current output to the motor so as to control the rotation speed and rotation direction of the motor 4. In other words, the vehicle wiper system can control the running state of the motor 4 by controlling the drive circuit module 8, thereby indirectly controlling the movement state of the wiper blade 1 on the vehicle window glass.

[0092] Furthermore, the vehicle wiper system also includes a control assembly 9, which includes a control switch 92 and a control chip 91. The control chip 91 is electrically connected to the drive circuit module 8. The control chip 91 is electrically connected to the control switch 92. The control chip 91 sends a control signal to the drive circuit module 8 according to the switch instruction input by the control switch 92.

[0093] Exemplarily, the control chip 91 sends a control signal to the drive circuit module 8 according to the switch instruction input by the control switch 92, which can be divided into a PWM signal, a rotation direction signal and a rotation enable signal, wherein the PWM signal is a simple harmonic square wave, and the control chip 91 can output PWM signals of different frequencies to the drive circuit module 8, so that the drive circuit module 8 controls the speed of the motor 4. Secondly, the control chip 91 can output a rotation direction signal to the drive circuit module 8, so that the drive circuit module 8 controls the motor 4 to rotate forward or reverse. Next, the control chip 91 can output a rotation enable signal to the drive circuit module 8, so that the drive circuit module 8 controls the motor 4 to start rotating.

[0094] It should be noted that the control chip 91 can be in various forms, for example, the control chip 91 can be a single chip microcomputer or a DSP chip, and this embodiment does not limit the specific form of the control chip 91. The control chip 91 calculates the number of steps and speed of the motor 4 during a single scraping by using the preset scraping range and scraping frequency, and transmits a signal to the drive circuit module 8.

[0095] Exemplarily, the control switch 92 adopts a universal conversion switch. In some possible implementations, the control switch 92 includes a knob 921, which is used to input at least two control instructions for controlling the rotation speed of the scraper 1 to the control chip 91. Among them, the knob 921 can be rotated on the control panel 922, and the control panel 922 is provided with three gears of high speed, low speed and stop. When the pointer of the knob 921 rotates to a certain gear, the control switch 92 transmits the corresponding switch instruction to the control chip 91. For the specific structure of the control switch 92, this embodiment does not make specific restrictions, as long as the switch instructions of high speed, low speed and stop can be transmitted to the control chip 91. Among them, the control switch 92 can be located on the operating table for user control.

[0096] Optionally, the driving circuit module 8 and the control chip 91 are located inside the support frame 7 and fixed to the side walls of the support frame 7, which can prevent the driving circuit module 8 and the control chip 91 from colliding and being damaged during the movement of the vehicle.

[0097] In this embodiment, by connecting the motor 4 to the drive circuit module 8, and at the same time electrically connecting the drive circuit module 8 to the control chip 91, and then electrically connecting the control chip 91 to the control switch 92, the user only needs to adjust the control switch 92 to different gears to achieve control of the scraping movement state. The drive circuit module 8 outputs power to the A phase and the B phase of the motor 4 to control the rotation direction and the number of rotation steps of the motor 4. The motor 4 is connected to the transmission shaft 3 to drive the scraper rod 2 to rotate. When the single-pass scraping is completed, the control chip 91 sends a reverse rotation direction instruction to the drive circuit module 8, and the scraper rod 2 moves in the opposite direction and returns to its original position to achieve reciprocating scraping.

[0098] Furthermore, the motor 4 is a stepper motor. The motor shaft of the stepper motor can rotate forward or reverse, and the forward rotation and flipping of the motor shaft drive the transmission shaft to rotate forward or reverse, so as to drive the scraper to reciprocate on the window glass. The forward or reverse rotation of the motor shaft of the stepper motor is controlled by a drive circuit module electrically connected to the stepper motor.

[0099] A stepper motor is used as the motor 4 , because the stepper motor can rotate forward or reverse, which meets the use requirements. At the same time, the stepper motor is a brushless motor 4 , which avoids damage to the wiper system caused by a failure of the carbon brush of the motor 4 .

[0100] Embodiment 7

[0101] On the basis of the above embodiments, this embodiment further provides a rail vehicle, comprising a vehicle body and any one of the above vehicle wiper systems, and the rail vehicle can be used for cargo transportation or passenger transportation.

[0102] The rail vehicle provided in the present embodiment uses the above-mentioned vehicle wiper system. The vehicle wiper system adopts a motor capable of forward and reverse rotation and a transmission shaft connected to the motor as a driving mechanism to replace the driving mechanism composed of a permanent magnet DC motor and a connecting rod mechanism used in the relevant technology. Since the motor of the present embodiment can be controlled to rotate forward and reverse by a control signal, thereby driving the transmission shaft connected to the motor to rotate forward and reverse, and then driving the scraper rod tightly connected to the transmission shaft and the scraper strip connected to the scraper rod to perform reciprocating motion, there is no need to use a complex mechanical coordination method such as a connecting rod mechanism to achieve the scraping of the window glass by the scraper strip. Therefore, the jamming phenomenon caused by the deformation of the joint part of the connecting rod mechanism when the connecting rod mechanism is used to drive the scraper rod 2 to move can be avoided, so as to improve the service life of the vehicle wiper system and reduce the use and maintenance costs of the rail vehicle.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle windshield wiper system, characterized in that: include: Scraper blade, scraper rod, transmission shaft, motor; The scraper is used to wipe away raindrops on the vehicle window glass; The first end of the scraper rod is connected to the scraper blade, the second end of the scraper rod is tightly connected to the first end of the transmission shaft, and the second end of the transmission shaft is transmission-connected to the motor shaft of the motor; The motor is used to drive the transmission shaft to rotate forward or reversely, so as to drive the scraper to make a reciprocating motion on the window glass; It also includes a reducer and a coupling, wherein the motor shaft of the motor is drivingly connected to the input end of the reducer, and the output shaft of the reducer is fastened to the second end of the transmission shaft through the coupling; It also includes a support frame, which includes two support plates, the two support plates are arranged in parallel, and the two support plates are connected together by a support column located between the two support plates. The coupling is located in the two support plates, and the reducer and the motor are located on one of the support plates. The output shaft of the reducer passes through the support plate and is fastened to one side of the coupling, and the transmission shaft passes through the other support plate and is fastened to the other side of the coupling.

2. The vehicle wiper system according to claim 1, characterized in that: It also includes a driving circuit module, the motor is electrically connected to the driving circuit module, and the driving circuit module is used to drive the motor.

3. The vehicle wiper system according to claim 2, characterized in that: It also includes a control assembly, which includes a control switch and a control chip. The control chip is electrically connected to the drive circuit module. The control chip is electrically connected to the control switch. The control chip sends a control signal to the drive circuit module according to the control instruction input by the control switch.

4. The vehicle wiper system according to claim 3, characterized in that: The control switch comprises a knob, and the knob is used to input at least two control instructions for controlling the rotation speed of the scraper blade into the control chip.

5. The vehicle wiper system according to claim 1, characterized in that: The scraper blade comprises a brush strip and a bracket, wherein the brush strip is used to contact the windshield, a first end of the bracket is fixedly connected to the brush strip, and a second end of the bracket is rotatably connected to the scraper rod; and / or, The motor is a stepping motor.

6. A rail vehicle, characterized in that: The invention comprises a vehicle body and a vehicle windshield wiper system as claimed in any one of claims 1 to 5.

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