Windscreen wiper assembly and vehicle

Abstract

The utility model provides a windscreen wiper assembly and a vehicle. The problems that a connecting pipeline of the windscreen wiper assembly is exposed, deformed and invalid can be solved. The windscreen wiper assembly comprises a wiper rod and a wiper blade, wherein the wiper rod is provided with a first conveying channel for washing liquid; the windscreen wiper output shaft is connected with the wiper rod; the windscreen wiper output shaft is provided with a second conveying channel for the washing liquid; and the second conveying channel is communicated with the first conveying channel.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a windshield wiper assembly and a vehicle. Background Technology

[0002] like Figure 7 and Figure 8 As shown, Figure 7 This is a schematic diagram of a windshield wiper assembly 01 located at the windshield 02 of a vehicle; Figure 8 for Figure 7 A schematic diagram showing the connection between the wiper arm 012 and the connecting pipe 013 of the windshield wiper assembly 01.

[0003] Vehicles are generally equipped with a windshield wiper assembly 01, which includes a wiper blade 011 and a wiper arm 012. The wiper arm 012 reciprocates to drive the wiper blade 011 to swing, thereby cleaning the windshield 02. The wiper blade 011 is equipped with a nozzle to spray washer fluid onto the windshield, and the wiper arm 012 is equipped with a delivery channel for conveying washer fluid. In addition, the windshield wiper assembly 01 also has a connecting pipe 013, which connects the washer fluid tank and the delivery channel of the wiper arm 012. Because the wiper arm 012 needs to reciprocate, the connecting pipe 013 needs to be relatively long at the connection point with the wiper arm 012 to accommodate the reciprocating motion of the wiper arm 012. This results in a long exposed connecting pipe 013, and the connecting pipe 013 is also prone to deformation and failure due to the movement of the wiper arm 012. Utility Model Content

[0004] The purpose of this application is to provide a wiper assembly and vehicle that can improve the problems of exposed connecting pipes and deformation failure of the wiper assembly.

[0005] To solve the above-mentioned technical problems, this application provides a wiper assembly, including:

[0006] A scraper bar, wherein the scraper bar is provided with a first delivery channel for washing liquid;

[0007] A wiper output shaft is provided, which is connected to the wiper arm; the wiper output shaft is provided with a second conveying channel for washer fluid; the second conveying channel is connected to the first conveying channel.

[0008] Optionally, the wiper assembly further includes a connecting pipe, through which the second delivery channel is connected to the first delivery channel;

[0009] Alternatively, the first conveying channel and the second conveying channel can be connected together.

[0010] Optionally, the scraper bar has an inner side, which is the side of the scraper bar closest to the vehicle interior, and the connecting pipe is located on the inner side of the scraper bar.

[0011] Optionally, the wiper bar has a connecting hole, and the wiper output shaft has a first end, which passes through the connecting hole;

[0012] The second conveying channel includes a first channel segment and a second channel segment extending axially along the wiper output shaft. One end of the first channel segment is connected to the second channel segment, and the other end passes through the side wall of the wiper output shaft. The connecting pipe is connected to the first channel segment.

[0013] Optionally, the wiper assembly further includes a first connector, one end of which is inserted into the first channel segment and the other end of which is inserted into the connecting pipe.

[0014] Optionally, the wiper bar has a connecting hole, the wiper output shaft has a first end, the first end passes through the connecting hole, the port of the first conveying channel is located on the hole wall corresponding to the connecting hole, and one end of the second conveying channel is connected to the port.

[0015] Optionally, the first end passes through the connecting hole and is press-fitted to the wiper output shaft; the wiper assembly also includes a bushing and a cap, the bushing covers the first end and is press-fitted to the first end, and the cap covers the bushing and the first end.

[0016] Optionally, the wiper output shaft has a first end and a second end, the first end being connected to the wiper bar, and the second conveying channel extending through the second end of the wiper output shaft along its axial direction.

[0017] Optionally, the wiper assembly further includes a second connector, which is rotatably sealed to the channel wall corresponding to the second delivery channel.

[0018] The wiper assembly in this application has a second washer fluid delivery channel on its wiper output shaft. A portion of the passage for delivering washer fluid to the wiper blade is built into the wiper output shaft. The wiper output shaft and the wiper arm are relatively fixed; that is, the relative position of the wiper arm and the wiper output shaft remains unchanged during the reciprocating motion of the wiper arm. Compared to the prior art where the connecting pipe to the washer fluid tank is directly connected to the wiper arm, in this application, the washer fluid from the tank only needs to be delivered to the wiper output shaft through the connecting pipe. There is no need to reserve a long connecting pipe at the wiper arm position, thereby reducing the exposure of the connecting pipe and improving the resistance to deformation and failure caused by the wiper arm's movement.

[0019] This application also provides a vehicle including any of the wiper assemblies described above. A vehicle having a wiper assembly as described above has the same technical effects as the aforementioned wiper assembly, and for the sake of brevity, will not be described further here. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the location of the wiper assembly on the windshield of a vehicle in one embodiment of this application; it is for illustrative purposes only. Figure 1 One wiper unit;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a windshield wiper unit;

[0022] Figure 3 for Figure 1 A schematic diagram of the connection position between the wiper arm and the wiper output shaft of the windshield wiper assembly;

[0023] Figure 4 for Figure 3 sectional view diagram;

[0024] Figure 5 for Figure 4 An enlarged diagram of part A in the middle shows the specific connection method between the wiper output shaft and the wiper arm;

[0025] Figure 6 This is a schematic diagram of the connection between the wiper output shaft and the wiper arm in another embodiment of this application;

[0026] Figure 7 This is a schematic diagram of a windshield wiper assembly located on the windshield of a vehicle.

[0027] Figure 8 for Figure 7 A schematic diagram of the wiper arm and connecting pipes of the windshield wiper assembly.

[0028] The reference numerals in the above figures are explained as follows:

[0029] 10-Wiper assembly; 101-Wiper output shaft; 1011-First end; 10111-Chamfered surface; 1012-Second end; 101a-Second conveying channel; 101a1-First channel section; 101a2-Second channel section; 102-Wiper bar; 102a-First conveying channel; 102aa-Port; 102b-Connecting hole; 102c-Sink; 103-Connecting pipe; 104-Second connector; 105-First connector; 106-Mounting base; 107-Fasting bolt; 108-Wiper blade; 109-Cap; 110-Bushing; 111-Shaft sleeve;

[0030] 20-Dust baffle;

[0031] 30 - Windshield. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The terms "first," "second," etc., used in the embodiments of this application are only used to distinguish features with the same or similar structures, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram showing the position of the wiper assembly 10 on the windshield 30 of a vehicle in one embodiment of this application; it is for illustrative purposes only. Figure 1 One wiper unit; Figure 2 for Figure 1 A schematic diagram of the structure of a windshield wiper unit.

[0034] The vehicle includes a windshield wiper assembly 10. Figure 1 In this vehicle, a dust baffle 20 is located below the windshield 30. A wiper assembly 10 is mounted on the dust baffle 20. The wiper assembly 10 includes two wiper units, each consisting of a wiper arm 102 and a wiper blade 108. The wiper arm 102 reciprocates, causing the wiper blade 108 to reciprocate. The wiper blade 108 directly contacts the windshield 30 to remove rainwater, dust, and other debris. The wiper assembly 10 also includes a drive component, which may include a motor and a transmission assembly. The motor drives the wiper arm 102 to reciprocate via the transmission assembly, and the transmission assembly can simultaneously drive the reciprocating motion of both wiper units.

[0035] Please continue to refer to the following for details. Figure 3 and Figure 4 , Figure 3 for Figure 1 A schematic diagram of the connection position between the wiper arm 102 and the wiper output shaft 101 of the windshield wiper assembly 10; Figure 4 for Figure 3 A cross-sectional view diagram.

[0036] Each wiper unit includes a wiper output shaft 101, a wiper arm 102 connected to the wiper output shaft 101, and the wiper arm 102 is driven to swing by the wiper output shaft 101. As mentioned above, the drive component of the wiper assembly 10 includes a motor, which drives the wiper output shaft 101 to rotate through a transmission assembly. When the wiper output shaft 101 rotates, it drives the wiper arm 102 to swing back and forth. The transmission assembly can be a crank-connecting rod mechanism. During the transmission process, the crank-connecting rod mechanism drives the wiper output shaft 101 to rotate forward and backward, thereby driving the wiper arm 102 to rotate. The transmission of the crank-connecting rod mechanism is existing technology and will not be discussed further here.

[0037] In this embodiment, the wiper arm 102 of the wiper assembly 10 is provided with a first conveying channel 102a. The first conveying channel 102a is connected to the nozzle of the wiper blade 108. The first conveying channel 102a can convey the washing liquid (such as windshield washer fluid) to the nozzle of the wiper blade 108 to spray the washing liquid onto the windshield 30 to achieve the purpose of cleaning.

[0038] Notably, in this embodiment, the wiper output shaft 101 is provided with a second conveying channel 101a. That is, the wiper output shaft 101 can be machined with a channel to serve as the second conveying channel 101a, and the second conveying channel 101a is connected to the first conveying channel 102a. Both the first and second conveying channels 102a are used to convey washer fluid. The second conveying channel 101a can be connected to the washer fluid tank in the vehicle. Thus, the washer fluid in the tank can be first conveyed to the second conveying channel 101a via a connecting pipe, then conveyed by the second conveying channel 101a to the first conveying channel 102a, and finally supplied to the wiper blade 108 by the first conveying channel 102a.

[0039] With this configuration, a portion of the passage for delivering wash fluid to the wiper blade 108 is built into the wiper output shaft 101. The wiper output shaft 101 and the wiper arm 102 are relatively fixed, meaning that the relative position of the wiper arm 102 and the wiper output shaft 101 remains unchanged during the reciprocating swing of the wiper arm 102. Compared to the prior art where the connecting pipe connected to the wash fluid tank is directly connected to the wiper arm, in this embodiment, the wash fluid from the wash fluid tank only needs to be delivered to the wiper output shaft 101 through the connecting pipe. There is no need to reserve a long connecting pipe at the position of the wiper arm 102, thereby reducing the exposure of the connecting pipe and improving the deformation failure of the connecting pipe caused by the movement of the wiper arm 102.

[0040] Can be combined Figure 1 , Figure 4 In this embodiment, the windshield 30 and the hood are connected by a dust baffle 20. The wiper output shaft 101 passes through the dust baffle 20 at the windshield 30. The two ends of the wiper output shaft 101 can be defined as a first end 1011 and a second end 1012. The first end 1011 is located on the outside of the dust baffle 20, and the second end 1012 is located on the inside of the dust baffle 20, i.e., inside the vehicle body, specifically in the front compartment of the vehicle. The washer fluid reservoir, etc., are also located in the front compartment of the vehicle. Figure 4Most of the wiper output shaft 101 is located inside the dust baffle 20. Additionally, the wiper assembly 10 in this embodiment also includes a mounting base 106 and a bushing 111. The wiper output shaft 101 is inserted into the bushing 111, which is fixed to the vehicle body via the mounting base 106. Specifically, the mounting base 106 is fixed to the vehicle body via fastening bolts 107. The wiper output shaft 101 passes through the bushing 111, which limits its movement, allowing it to rotate only around its axis. The wiper output shaft 101 and the bushing 111 can be connected via a bearing (not shown) to further ensure smooth rotation.

[0041] For example, Figure 4 The wiper assembly 10 also includes a connecting pipe 103, through which the second conveying channel 101a of the wiper output shaft 101 is connected to the first conveying channel 102a. The connecting pipe 103 is externally mounted on the wiper arm 102. Since the wiper arm 102 and the wiper output shaft 101 are two independent components in this embodiment, the separately provided connecting pipe 103 facilitates the connection between the first conveying channel 102a and the second conveying channel 101a. Of course, since the relative positions of the wiper output shaft 101 and the wiper bar 102 remain unchanged, the connecting pipe 103 only serves to connect the first conveying channel 102a and the second conveying channel 101a. The connecting pipe 103 does not need to swing with the wiper bar 102 or rotate with the wiper output shaft 101. In this embodiment, the length of the connecting pipe 103 can be set to be smaller. In contrast, the connecting pipe in the prior art needs to connect the wash liquid tank and the wiper bar 102. The connecting pipe needs to swing with the wiper bar 102, so a longer length needs to be reserved at the position of the wiper bar 102. In comparison, the length of the connecting pipe 103 at the wiper bar 102 in this embodiment is smaller and does not need to move with the wiper bar 102.

[0042] Furthermore, the wiper stalk 102 can be defined as having an inner side and an outer side. The inner side is the side of the wiper stalk 102 closest to the windshield 30 of the vehicle, and the outer side is arranged opposite to the inner side. The outer side can also be understood as the side facing forward of the vehicle. It should be understood that the wiper assembly 10 shown in the accompanying drawings of this embodiment is disposed at the position of the windshield 30. Obviously, if the wiper assembly 10 is also provided for the rear window of the vehicle, the wiper assembly 10 in this embodiment is also applicable to the rear window. In this case, the outer side of the wiper stalk 102 is the side facing backward of the vehicle. It can be seen that the inner side of the wiper stalk 102 is the side closer to the vehicle interior, and vice versa.

[0043] In some specific embodiments, the connecting pipe 103 can be located inside the wiper arm 102. This allows the wiper arm 102 to conceal the connecting pipe 103, preventing it from being seen from the outside. This provides a hidden-pipe wiper assembly 10, which improves the overall vehicle appearance. Of course, it is precisely because the connecting pipe 103 can be relatively short and occupies a small volume that it can be concealed by the wiper arm 102. In contrast, in the prior art, longer connecting pipes pre-installed at the wiper arm 102 cannot be concealed by the wiper arm 102.

[0044] You can continue to refer to this. Figure 4 As mentioned above, the wiper arm 102 and the wiper output shaft 101 are connected and fixed to each other. Specifically, in this embodiment, the wiper arm 102 has a connecting hole 102b, and the first end 1011 of the wiper output shaft 101 passes through the connecting hole 102b to be connected and fixed to the wiper arm 102. At this time, the second conveying channel 101a includes a first channel segment 101a1 and a second channel segment 101a2 extending axially along the wiper output shaft 101. One end of the first channel segment 101a1 connects to the second channel segment 101a2, and the other end penetrates the side wall of the wiper output shaft 101. The second channel segment 101a2 can specifically extend radially along the wiper output shaft 101, and the connecting pipe 103 can connect to the first channel segment 101a1. Figure 4 As can be seen, the second conveying channel 101a in this embodiment is approximately L-shaped, so that the connecting pipe 103 can be connected to the side wall of the wiper output shaft 101 without affecting the connection between the first end 1011 of the wiper output shaft 101 and the wiper arm 102, and it is also convenient to place the connecting pipe 103 inside the wiper arm 102. Of course, the second conveying channel 101a can also pass through the first end 1011 of the wiper output shaft 101.

[0045] Please refer to Figure 5 , Figure 5 for Figure 4 The enlarged schematic diagram of part A shows the specific connection method between the wiper output shaft 101 and the wiper arm 102.

[0046] In this embodiment, the first end 1011 of the wiper output shaft 101 and the connecting hole 102b can be press-fitted together. Specifically, the side wall surface of the first end 1011 of the wiper output shaft 101 can be knurled to enhance the reliability of the press-fit. Figure 5 The side wall of the first end 1011 of the wiper output shaft 101 includes a chamfered surface 10111, which is knurled to facilitate guiding insertion and press-fitting with the connecting hole 102b. Additionally, the wiper assembly 10 in this embodiment is also provided with a cap 109, which covers the end face of the portion of the first end 1011 that protrudes from the connecting hole 102b, serving to protect it and maintain its appearance. Figure 5In the wiper arm 102, a recessed groove 102c is provided, which connects to a connecting hole 102b. The portion of the wiper output shaft 101 extending out of the connecting hole 102b can be located within the recessed groove 102c. A cap 109 seals the opening of the recessed groove. The cap 109 can be made of rubber to allow partial insertion into the recessed groove 102c, providing elastic deformation for sealing. Additionally, the wiper assembly 10 can also be provided with a bushing 110. The bushing 110 can be press-fitted onto the outside of the first end 1011 of the wiper output shaft 101. Similarly, knurling is provided on the sidewall surface of the first end 1011 to improve the press-fitting effect. In this case, the cap 109 can be press-fitted onto the outside of the bushing 110. The bushing 110 facilitates the press-fitting of the cap 109. Figure 5 As shown, the bottom of the sink 102c has an annular protrusion, and the inner cavity of the annular protrusion is part of the connecting hole 102b. The bushing 110 can abut against the annular protrusion axially, which also helps to prevent the wiper output shaft 101 from disengaging from the connecting hole 102b and improves the reliability of fixing the wiper arm 102 and the wiper output shaft 101.

[0047] Continue to refer to Figure 4 In this embodiment, the wiper assembly 10 also includes a first connector 105. One end of the first connector 105 is inserted into the first channel section 101a1, and the other end is inserted into the connecting pipe 103. The first connector 105 facilitates the connection between the second conveying channel 101a and the connecting pipe 103. In fact, the connecting pipe 103 and the first conveying channel 102a can also be connected through the connector.

[0048] Let's look again. Figure 4 In this embodiment, the wiper assembly 10 further includes a second connector 104, which is rotary-sealed to the channel wall corresponding to the second delivery channel 101a. As described above, the second delivery channel 101a and the washer fluid tank can be connected via a connecting pipe. The wiper output shaft 101, which is provided with the second delivery channel 101a, reciprocates around its axis under the drive of the crank-connecting rod mechanism. After the second connector 104 is provided for rotary sealing connection, the rotation of the wiper output shaft 101 will not affect the connecting pipe, thus improving the deformation and failure of the connecting pipe inside the front compartment. Similarly, the connecting pipe does not need to reserve length to accommodate the rotation of the wiper output shaft 101, thus shortening the length of the connecting pipe. Of course, the rotary-sealed second connector 104 can also be omitted, and the second delivery channel 101a can be directly connected to the connecting pipe, or the connecting pipe can be connected via a non-rotationally sealed connector.

[0049] In detail, in this embodiment, the second conveying channel 101a extends axially through the second end 1012 of the wiper output shaft 101. However, the second conveying channel 101a is not limited to extending through the second end 1012. For example, both ends of the second conveying channel 101a could extend through the sidewall of the wiper output shaft 101, which is also a feasible solution. This embodiment does not impose specific limitations on this. The second conveying channel 101a is simply designed to extend through the wiper output shaft 101, without needing an opening in the sidewall of the wiper output shaft 101. This facilitates the connection between the wiper output shaft 101 and the transmission assembly. When the transmission assembly is a crank-connecting rod mechanism, the connecting rod of the crank-connecting rod structure can be connected to the second end 1012 of the wiper output shaft 101. For example, the connecting rod can have a hole structure, and the second end 1012 can extend through the hole structure. In this case, the aforementioned second connector 104 can axially connect with the second conveying channel 101a, specifically with the second channel segment 101a2.

[0050] In the above embodiment, the first conveying channel 102a and the second conveying channel 101a are connected by a connecting pipe 103. However, this is not a limitation; for example, the first conveying channel 102a and the second conveying channel 101a can also be connected directly, thus eliminating the need for the connecting pipe 103. Figure 6 As shown, Figure 6 This is a schematic diagram of the connection between the wiper output shaft 101 and the wiper arm 102 in another embodiment of this application.

[0051] In this embodiment, the wiper assembly 10 has a structure basically the same as that in the above embodiments, except that the first conveying channel 102a and the second conveying channel 101a are directly connected without a connecting pipe 103. The wiper arm 102 in this embodiment also has a connecting hole 102b, and its connection method with the wiper output shaft 101 is the same as in the above embodiments. However, the first conveying channel 102a on the wiper arm 102 has a port 102aa, which is located on the wall of the hole corresponding to the connecting hole 102b. One end of the second conveying channel 101a is connected to the port 102aa. Figure 6 As shown, the first channel segment 101a1 of the second conveying channel 101a and the port 102aa of the first conveying channel 102a are connected. Of course, although this embodiment does not require the connection pipe 103 and is structurally simpler, from the perspective of assembly and processing, the embodiment with the connection pipe 103 described above is easier to implement.

[0052] This application also provides a vehicle that includes the wiper assembly 10 described in the above embodiments. Therefore, the vehicle also has the same technical effects as the wiper assembly 10 described above, and will not be described again.

[0053] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A wiper assembly, characterized in that, include: Scraper (102), the scraper (102) is provided with a first delivery channel (102a) for washing liquid; A wiper output shaft (101) is connected to the wiper arm (102); the wiper output shaft (101) is provided with a second conveying channel (101a) for washing liquid; the second conveying channel (101a) is connected to the first conveying channel (102a).

2. The wiper assembly according to claim 1, characterized in that, The wiper assembly (10) also includes a connecting pipe (103), through which the second delivery channel (101a) is connected to the first delivery channel (102a). Alternatively, the first conveying channel (102a) and the second conveying channel (101a) are connected.

3. The wiper assembly according to claim 2, characterized in that, The scraper (102) has an inner side, which is the side of the scraper (102) closer to the vehicle interior, and the connecting pipe (103) is located on the inner side of the scraper (102).

4. The wiper assembly according to claim 3, characterized in that, The wiper arm (102) has a connecting hole (102b), and the wiper output shaft (101) has a first end (1011), which passes through the connecting hole (102b). The second conveying channel (101a) includes a first channel segment (101a1) and a second channel segment (101a2) extending axially along the wiper output shaft (101). One end of the first channel segment (101a1) is connected to the second channel segment (101a2), and the other end passes through the side wall of the wiper output shaft (101). The connecting pipe (103) is connected to the first channel segment (101a1).

5. The wiper assembly according to claim 4, characterized in that, The wiper assembly (10) also includes a first connector (105), one end of which is inserted into the first channel segment (101a1) and the other end is inserted into the connecting pipe (103).

6. The wiper assembly according to claim 2, characterized in that, The wiper arm (102) has a connecting hole (102b), the wiper output shaft (101) has a first end (1011), the first end (1011) passes through the connecting hole (102b), the port (102aa) of the first conveying channel (102a) is located on the hole wall corresponding to the connecting hole (102b), and one end of the second conveying channel (101a) is connected to the port (102aa).

7. The wiper assembly according to claim 4 or 6, characterized in that, The first end (1011) passes through the connecting hole (102b) and is press-fitted to the wiper output shaft (101); the wiper assembly (10) also includes a bushing (110) and a cap (109), the bushing (110) covers the first end (1011) and is press-fitted to the first end (1011), and the cap (109) covers the bushing (110) and the first end (1011).

8. The wiper assembly according to any one of claims 1-6, characterized in that, The wiper output shaft (101) has a first end (1011) and a second end (1012), the first end (1011) is connected to the wiper bar (102), and the second conveying channel (101a) passes through the second end (1012) of the wiper output shaft (101) along the axial direction of the wiper output shaft (101).

9. The wiper assembly according to any one of claims 1-6, characterized in that, The wiper assembly (10) further includes a second connector (104), which is rotatably sealed to the channel wall corresponding to the second delivery channel (101a).

10. A vehicle, characterized in that, Includes the wiper assembly (10) as described in any one of claims 1-9.

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