Windscreen wiper connecting rod structure, windscreen wiper assembly and rail transit vehicle

Abstract

The invention discloses a windscreen wiper connecting rod structure, a windscreen wiper assembly and a rail transit vehicle, and relates to the technical field of rail transit vehicles. The connecting rod structure of the windscreen wiper comprises two brush rods which are arranged in parallel at an interval, two ends of the first connecting rod are respectively connected with the two brush rods; one end of the transmission rod is connected with the first connecting rod far away from one side of the brush rod; one end of the second connecting rod is connected with the other end of the transmission rod away from one side of the first connecting rod; and one end of the sliding assembly is connected with the tops of the two brush rods along the preset direction. The windscreen wiper solves the problems that the size of a front windscreen of a rail transit vehicle is wide, and when a windscreen wiper wipes, due to the fact that a brush piece cannot make contact with upper and lower glue lines of the windscreen, and the wiping area can only cover a sector-shaped area in the middle of the windscreen, large areas on the two sides of the windscreen cannot make contact with the wiping brush, and the wiping effect is poor. And the stopping position of the brush sheet is also far away from the side edge of the windshield, so that the sight of the cab is influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit vehicles, in particular to a wiper linkage structure, a wiper assembly and a rail transit vehicle. BACKGROUND

[0002] The wiper is a tool for simple cleaning on the vehicle glass to prevent rain and other dirt from affecting the line of sight, which is an important part to ensure driving safety.

[0003] However, the front windshield of the rail transit vehicle is relatively wide, when the wiper is brushed, the brush piece cannot contact the upper and lower rubber joints of the windshield, and the brushing area can only cover a segment of the fan ring-shaped area in the middle of the windshield, causing a problem that a large area on both sides of the windshield cannot be brushed, and the stop position of the brush piece is also far from the side edge of the windshield, affecting the driver's vision. In view of the above problems, no effective solution has been proposed so far. SUMMARY

[0004] The present application provides a wiper linkage structure, a wiper assembly and a rail transit vehicle to at least solve one of the problems existing in the prior art.

[0005] Technical solution: A wiper linkage structure, comprising:

[0006] Two spaced and parallel brush rods;

[0007] A first connecting rod, two ends of which are connected to two brush rods respectively;

[0008] A transmission rod, one end of which is connected to the first connecting rod away from the brush rod side;

[0009] A second connecting rod, one end of which is connected to the other end of the transmission rod away from the first connecting rod side; and

[0010] A sliding assembly, one end of which is connected to the top of the two brush rods in a predetermined direction, and the other end is movably connected to the other end of the second connecting rod close to the transmission rod side;

[0011] Wherein, when the first connecting rod on the brush rod is oriented to rotate, the first connecting rod drives the second connecting rod at the end of the transmission rod to move in a predetermined direction, so that the sliding assembly at the top of the second connecting rod moves cyclically.

[0012] As a preferred, the top of the brush rod is provided with a wiper blade clamping rocker plate close to the first connecting rod side.

[0013] As a preferred, the sliding assembly comprises a sliding rail connected to the wiper blade clamping rocker plate, a sliding block is detachably arranged in the sliding rail, and the sliding block is connected to the output end of the second connecting rod.

[0014] The second connecting rod drives the slider to perform directional cyclic reciprocating motion in the slide rail.

[0015] Preferably, a brush clip is detachably provided on the slider.

[0016] Preferably, one end of the transmission rod is connected to the center of the first connecting rod to form a first node.

[0017] Preferably, the end of the transmission rod is hinged to the end of the second connecting rod to form a second node;

[0018] When the connecting rod moves, the movement trajectory of the second node is lower than the movement trajectory of the first node, so that the second connecting rod moves according to the preset degree of freedom.

[0019] Preferably, the top of the brush rod forms an angle with the top of the sliding assembly;

[0020] When the brush rod moves toward the middle, the angle becomes smaller, so that the second connecting rod is located at the lowest point;

[0021] When the brush rod moves sideways, the angle becomes larger so that the second connecting rod is located at the highest point.

[0022] In order to achieve the above-mentioned objectives, according to another aspect of the present application, a wiper assembly is also provided.

[0023] The wiper assembly according to the present application includes the wiper connecting rod structure described above;

[0024] It also includes: a brush sheet connected to the brush sheet holder along a preset direction;

[0025] There are two groups of wiper connecting rod structures, and the two groups of wiper connecting rod structures are symmetrically arranged;

[0026] When the brush bar scrapes the middle of the windshield, the angle becomes smaller, and the brush moves to the lowest point of the windshield along with the circular motion of the transmission bar;

[0027] When the brush rod scrapes both sides of the windshield, the angle becomes larger, and the brush moves to the highest point of the windshield along with the circular motion of the transmission rod to dynamically compensate for the up and down movement offset of the brush and increase the scraping area.

[0028] Preferably, a driving component is provided at the bottom of the wiper linkage structure, and the driving component drives the brush blade to approach the outer edge of the windshield to increase the wiping width and the stopping position of the outward-moving brush blade.

[0029] In order to achieve the above-mentioned purpose, according to another aspect of the present application, a rail transit vehicle is also provided.

[0030] The rail transit vehicle according to the present application includes the wiper assembly.

[0031] Beneficial effect: In the embodiment of the present application, an optimized structure is adopted. When the first connecting rod on the brush rod rotates in a certain direction, the first connecting rod drives the second connecting rod at the end of the transmission rod to move in a predetermined direction, so that the sliding assembly located at the top of the second connecting rod moves back and forth in a cycle, thereby achieving the purpose of dynamic scraping, thereby increasing the scraping area and further moving the stop position of the brush arm outward without affecting the line of sight in the driver's cab. This solves the problem that the front windshield of the rail transit vehicle is relatively wide. When the wiper is scraping, the brush blade cannot contact the upper and lower glue seams of the windshield, and the scraping area can only cover a fan-shaped area in the middle of the windshield, resulting in a large area on both sides of the windshield that cannot be touched by the scraper, and the stop position of the brush blade is also far from the side edge of the windshield, affecting the line of sight in the driver's cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front view of the wiper connecting rod structure of the present invention without the wiper blade;

[0033] Figure 2 is a rear view of the wiper linkage structure of the present invention;

[0034] Figure 3 This is an axonometric view of the wiper connecting rod structure of the present invention without the wiper clip and the wiper blade;

[0035] Figure 4 This is a schematic diagram of the core principle of the mechanically driven rectangular wiper of the wiper linkage structure of the present invention;

[0036] Figure 5 is a schematic diagram of the wiping area of ​​an existing wiper assembly; and

[0037] Figure 6 It is a schematic diagram of the wiping area of ​​the wiper assembly of the present invention.

[0038] The accompanying drawings are:

[0039] 10. Brush rod;

[0040] 20. First connecting rod;

[0041] 30. Transmission rod;

[0042] 40. Second connecting rod;

[0043] 50. Sliding assembly; 501. Slide rail; 502. Slider;

[0044] 60. Brush clip rocker;

[0045] 70. Brush clip;

[0046] 80. Brush film;

[0047] 90. Existing plan scraping area;

[0048] 100. The scraping area of ​​this application;

[0049] a. First node; b. Second node. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations 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.

[0052] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0053] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] like Figure 1-6 As shown, the present application relates to a wiper connecting rod structure, a wiper assembly and a rail transit vehicle. Figure 1-3 As shown, the wiper linkage structure includes: two brush rods 10 spaced apart and arranged in parallel; the brush rod 10 refers to the two wiper arm rods of the wiper, which maintain a certain distance and are parallel to each other. The brush rod 10 is a support rod for installing the wiper blade; it can achieve a good assembly effect, thereby ensuring a stable wiping effect.

[0055] A first connecting rod 20 has its two ends connected to the two brush rods 10 respectively; the first connecting rod 20 connects the opposite ends of the two brush rods 10 to form a bridge structure, so that the movement of the two brush rods 10 is coordinated and synchronous rotation is ensured; at the same time, it can also achieve a good coordination effect with other components, thereby achieving the effect of power transmission.

[0056] A transmission rod 30 has one end connected to the first connecting rod 20 on the side away from the brush rod 10; by connecting the transmission rod 30 to one end of the first connecting rod 20 and away from the side of the brush rod 10, the rotational force of the first connecting rod 20 can be transmitted to the second connecting rod 40; at the same time, the effect of changing the motion state can be achieved, thereby achieving the effect of circular motion, thereby ensuring good directional movement effect of subsequent other components.

[0057] A second connecting rod 40, one end of which is connected to the other end of the transmission rod 30 away from the first connecting rod 20; one end of the second connecting rod 40 is hinged on the transmission rod 30; it can receive the circular motion from the transmission rod 30 and transmit and convert it; its movement direction is constrained by its other end (the end connected to the sliding component 50).

[0058] A sliding assembly 50, one end of which is connected to the top of the two brush rods 10 along a preset direction, and the other end is movably connected to the other end of the second connecting rod 40 close to the side of the transmission rod 30; one end of the sliding assembly 50 is fixed or hinged to the top of the two brush rods 10, and this connection point is usually fixed or has limited rotational freedom; the other end is movably connected to the second connecting rod 40, and the connection point is located at the end of the second connecting rod 40 away from the transmission rod 30. This connection allows the end of the second connecting rod 40 to move along a preset direction on the sliding assembly 50.

[0059] In the present application, the preset direction may be a vertical direction or a Z-axis direction in a three-coordinate system.

[0060] When the first connecting rod 20 on the brush rod 10 rotates in a directional manner, the first connecting rod 20 drives the second connecting rod 40 at the end of the transmission rod 30 to move in a directional manner in a preset direction, so that the sliding assembly 50 located at the top of the second connecting rod 40 moves back and forth in a cyclical manner.

[0061] The wiper connecting rod structure of the present application is connected to the brush arm on one side and the brush blade 80 on the other side. The force of the wiper motor driving the brush rod 10 (brush arm) to move is used as the driving force for the dynamic adjustment of the wiper wiper blade 80. The slide rail 501 and the slider 502 are installed on the brush blade clamp rocker 60, and the brush blade clamp 70 is installed on the slider 502 and the upper connecting rod. The brush blade 80 is then fastened to the brush blade clamp 70 and connected to the brush rod 10 through the first connecting rod 20. The angle change between the brush blade 80 and the brush rod 10 is used to realize the movement of the brush blade 80 relative to the brush rod 10 up and down, and compensate for the upper and lower movement distance of the brush blade 80 during the wiping operation, thereby driving the brush blade 80 to reciprocate up and down relative to the brush arm, thereby realizing dynamic wiping and increasing the wiping width.

[0062] Specifically, the connection method of this application is:

[0063] First, the brush clip 70 is connected to the slider 502 and the second connecting rod 40 respectively by bolts, and then the connected module and the brush clip 70 rocker plate 60 are fixedly connected by fasteners. The first connecting rod 20 is fixed to the brush rod 10 as the fixed end of the circular motion. The transmission rod 30 and the first connecting rod 20 are fixed by fasteners as the movable connection end of the entire mechanism. One end of the second connecting rod 40 is connected to one end of the transmission rod 30, and the other end is fixedly connected to the slider 502.

[0064] When the brush rod 10 is in motion, with the first connecting rod 20 as the fixed point and the brush rod 10 swinging at different angles, the transmission rod 30 makes a circular motion so that the second connecting rod 40 pushes the slider 502 to move up or down in the slide rail 501; when the brush rod 10 scrapes the middle of the windshield, the angle becomes smaller and the brush piece 80 moves to the lowest point of the windshield with the circular motion of the transmission rod 30; when the brush rod 10 scrapes both sides of the windshield, the angle becomes larger and the brush piece 80 moves to the highest point of the windshield with the circular motion of the transmission rod 30, thereby compensating for the up and down movement offset of the brush piece 80 and achieving the purpose of increasing the scraping area.

[0065] like Figure 4 As shown, the brush rod 10AB performs circular motion around point A, and the brush disc CD can move back and forth vertically along the slide rail 501. During the operation of the brush rod 10AB, the angle between the brush disc CD and the brush rod 10AB will continuously change. A connecting rod EF is added to the brush rod 10AB, with one end fixed to point E of the scraper rod and the other end fixed to point F of the brush disc. The connecting rod EF can only perform circular motion around point E. When the scraper rod is in operation, the changing angle between the brush rod 10AB and the brush disc CD will drive the connecting rod EF to rotate, pushing the brush disc CD to move vertically along the slide rail 501, dynamically compensating for the distance moved by the brush disc CD during the scraping motion and realizing a dynamic scraping function.

[0066] The present invention adopts dynamic scraping compensation of the brush blade 80. When the brush arm moves toward the middle of the windshield, the brush blade 80 moves downward relative to the brush arm, away from the glue seam on the upper part of the windshield; when the brush arm moves toward the sides of the windshield, the brush blade 80 moves upward relative to the brush arm, away from the glue seam on the lower part of the glass, so that the brush blade 80 can continue to move outward, thereby achieving the purpose of increasing the scraping area, and the stop position of the brush arm can be further moved outward without affecting the line of sight in the driver's cab.

[0067] The structure of the present invention can be used as a separate connection module to connect different brush arms and brush blades 80, adapting to different wiper products. It has a simple structure, is easy to install, and is convenient for maintenance and replacement.

[0068] From the above description, it can be seen that this application achieves the following technical effects:

[0069] In the embodiment of the present application, an optimized structure is adopted. When the first connecting rod 20 on the brush rod 10 rotates in a certain direction, the first connecting rod 20 drives the second connecting rod 40 at the end of the transmission rod 30 to move in a predetermined direction, so that the sliding assembly 50 located at the top of the second connecting rod 40 can move back and forth in a circular motion, thereby achieving the purpose of dynamic scraping, thereby increasing the scraping area and further moving the stop position of the brush arm outward without affecting the line of sight of the driver's cab. This solves the problem that the front windshield of the rail transit vehicle is relatively wide. When the wiper is scraping, the brush blade 80 cannot contact the upper and lower glue seams of the windshield, and the scraping area can only cover a fan-shaped area in the middle of the windshield, resulting in a large area on both sides of the windshield that cannot be touched by the scraper, and the stop position of the brush blade 80 is also far from the side edge of the windshield, affecting the line of sight of the driver's cab.

[0070] Furthermore, a brush blade clamping rocker 60 is provided at the top of the brush rod 10 near the first connecting rod 20. It is understood that by providing the brush blade clamping rocker 60, the installation position of the brush blade 80 can be fixed and adjusted, so that the brush blade 80 can be stably clamped to the end of the brush rod 10 and can cooperate with the movement of the connecting rod.

[0071] Furthermore, the sliding assembly 50 includes: a slide rail 501 connected to the brush clip rocker 60, a slider 502 detachably provided in the slide rail 501, and the slider 502 is connected to the output end of the second connecting rod 40;

[0072] The second connecting rod 40 drives the slider 502 to perform directional cyclic reciprocating motion in the slide rail 501. It can be understood that a good sliding effect can be achieved while ensuring a good directional movement effect.

[0073] Furthermore, a brush clip 70 is detachably provided on the slider 502. It can be understood that this can facilitate assembly and disassembly, and at the same time, can facilitate good assembly with other components.

[0074] Furthermore, one end of the transmission rod 30 is connected to the center of the first connecting rod 20 to form a first node a. It can be understood that the transmission rod 30 is connected to the first connecting rod 20 at the center position to form a first motion pivot (first node a), which is a key node for power input and transmission.

[0075] Furthermore, the end of the transmission rod 30 is hinged to the end of the second connecting rod 40 to form a second node b;

[0076] During link motion, the trajectory of the second node b is lower than the trajectory of the first node a, allowing the second link 40 to move according to the pre-set degrees of freedom. It will be appreciated that the ends of the transmission rod 30 and the second link 40 are hingedly connected, forming the second node b. During link motion, the trajectory of the second node b is lower than the trajectory of the first node a, allowing the second link 40 to flexibly move along the pre-set trajectory according to the designed degrees of freedom.

[0077] Furthermore, the top of the brush rod 10 forms an angle with the top of the sliding assembly 50;

[0078] When the brush rod 10 moves toward the middle, the angle becomes smaller, so that the second connecting rod 40 is located at the lowest point;

[0079] When the brush arm 10 moves sideways, the angle increases, so that the second connecting rod 40 is at the highest point. It can be understood that this ensures a good scraping effect, and at the same time, it can also achieve the wiper blade 80 to dynamically wipe the rain according to the expected path. The brush blade 80 can move up and down. When the brush blade 80 is located on both sides, there is still a gap between the brush blade 80 and the lower edge of the windshield, so the brush arm can continue to scrape outward, which not only increases the scraping width, but also allows the brush blade 80 to stop outward without affecting the driver's cab's vision.

[0080] The present application also relates to a wiper assembly, comprising the wiper connecting rod structure;

[0081] It also includes: a brush sheet 80 connected to the brush sheet holder 70 along a preset direction;

[0082] There are two groups of wiper connecting rod structures, and the two groups of wiper connecting rod structures are symmetrically arranged;

[0083] When the brush rod 10 scrapes the middle of the windshield, the angle becomes smaller, and the brush blade 80 moves to the lowest point of the windshield along with the circular motion of the transmission rod 30;

[0084] When the brush rod 10 scrapes both sides of the windshield, the angle becomes larger, and the brush blade 80 moves to the highest point of the windshield along with the circular motion of the transmission rod 30 to dynamically compensate for the upward and downward movement offset of the brush blade 80 and increase the scraping area.

[0085] Furthermore, a drive component is provided at the bottom of the wiper linkage structure. This drive component drives the wiper blade 80 toward the outer edge of the windshield, thereby increasing the wiping width and moving the wiper blade 80 outward to its stopping position. As can be appreciated, this ensures a good drive effect, thereby ensuring stable wiping performance. The drive component is a wiper motor.

[0086] like Figure 5-6 In order to better understand and demonstrate the technical effects of this application, the following explanations are given:

[0087] When the existing wiper is wiping, due to the large curvature of the windshield, the wiping area can only cover a fan-shaped area 90 in the middle of the windshield, resulting in a large area on both sides of the windshield that cannot be wiped, and the stop position of the wiper is also far from the side edge of the windshield, affecting the driver's cab's vision.

[0088] By adopting the structure of the present application, the wiping area 100 can be completely covered and wiped. The brush arm and the brush blade can be connected in a structure that can dynamically move up and down according to the wiping position. When the brush arm moves toward the middle of the windshield, the brush blade moves downward relative to the brush arm; when the brush arm moves toward the sides of the windshield, the brush blade moves upward relative to the brush arm, thereby increasing the width of the wiping area of ​​the wiper and allowing the stop position of the brush arm to be further moved outward without affecting the driver's cab's line of sight.

[0089] The present application also relates to a rail transit vehicle, including the wiper assembly.

[0090] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. The wiper connecting rod structure is characterized in that: include: Two brush rods (10) spaced apart and arranged in parallel; a first connecting rod (20), the two ends of which are respectively connected to the two brush rods (10); a transmission rod (30), one end of which is connected to the first connecting rod (20) on a side away from the brush rod (10); a second connecting rod (40), one end of which is connected to the other end of the transmission rod (30) on a side away from the first connecting rod (20); and a sliding assembly (50), one end of which is connected to the top of the two brush rods (10) along a preset direction, and the other end of which is movably connected to the other end of the second connecting rod (40) on the side close to the transmission rod (30); When the first connecting rod (20) on the brush rod (10) rotates in a directional manner, the first connecting rod (20) drives the second connecting rod (40) at the end of the transmission rod (30) to move in a directional manner in a preset direction, so that the sliding assembly (50) located at the top of the second connecting rod (40) moves back and forth in a cycle.

2. The wiper linkage structure according to claim 1, characterized in that: A brush piece clamping rocking plate (60) is provided on the top of the brush rod (10) near one side of the first connecting rod (20).

3. The wiper linkage structure according to claim 2, characterized in that: The sliding assembly (50) comprises: a slide rail (501) connected to the brush clamp rocker (60); a slider (502) is detachably provided in the slide rail (501); and the slider (502) is connected to the output end of the second connecting rod (40); The second connecting rod (40) drives the slider (502) to perform directional cyclic reciprocating motion in the slide rail (501).

4. The wiper linkage structure according to claim 3, characterized in that: A brush clip (70) is detachably provided on the slider (502).

5. The wiper linkage structure according to claim 1, wherein: One end of the transmission rod (30) is connected to the center of the first connecting rod (20) to form a first node (a).

6. The wiper linkage structure according to claim 5, characterized in that: The end of the transmission rod (30) is hinged to the end of the second connecting rod (40) to form a second node (b); When the connecting rod moves, the movement trajectory of the second node (b) is lower than the movement trajectory of the first node (a), so that the second connecting rod (40) moves according to the preset degree of freedom.

7. The wiper linkage structure according to claim 1, wherein: The top of the brush rod (10) forms an angle with the top of the sliding assembly (50); When the brush rod (10) moves toward the middle, the angle becomes smaller, so that the second connecting rod (40) is located at the lowest point; When the brush rod (10) moves sideways, the angle becomes larger, so that the second connecting rod (40) is located at the highest point.

8. The wiper assembly is characterized in that: comprising a wiper linkage structure according to any one of claims 1 to 7; It also includes: a brush sheet (80) connected to the brush sheet holder (70) along a preset direction; There are two groups of wiper connecting rod structures, and the two groups of wiper connecting rod structures are symmetrically arranged; When the brush rod (10) scrapes the middle of the windshield, the angle becomes smaller, and the brush blade (80) moves to the lowest point of the windshield along with the circular motion of the transmission rod (30); When the brush rod (10) scrapes both sides of the windshield, the angle becomes larger, and the brush blade (80) moves to the highest point of the windshield along with the circular motion of the transmission rod (30), so as to dynamically compensate for the upward and downward movement offset of the brush blade (80) and increase the scraping area.

9. The wiper assembly according to claim 8, characterized in that: A driving component is provided at the bottom of the wiper link structure, and the driving component drives the wiper blade (80) to approach the outer edge of the windshield to increase the wiping width and the stop position of the outward-moving wiper blade (80).

10. A rail transit vehicle, characterized in that: The invention comprises a wiper assembly as claimed in any one of claims 8 to 9.

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