Wiper arm nozzle, wiper and car

Abstract

The application provides a wiper arm nozzle, a wiper and a car. The wiper arm nozzle comprises a nozzle body and a mounting portion. The mounting portion is hollow inside and communicates with a water inlet of the nozzle body. The mounting portion is open at both ends. A flow guide plate is inserted into the mounting portion. The flow guide plate is provided with a first flow channel and a second flow channel. The first flow channel forms a first water outlet at one end of the mounting portion. The second flow channel forms a second water outlet at the other end of the mounting portion. The first flow channel and the second flow channel are connected with a self-excitation flow channel. The first flow channel and the second flow channel gradually widen in the direction close to the water outlet. The wiper arm nozzle is provided with the first water outlet and the second water outlet. Both the water outlets widen in the direction close to the water outlet. The first flow channel and the second flow channel are connected with the self-excitation flow channel. The water sprayed from the two water outlets presents a left-right swinging fan shape. In this way, the water flow is more uniform, the coverage area is large, and the blank area is small.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a wiper arm nozzle, a wiper, and an automobile. Background Technology

[0002] More and more cars on the market are equipped with wiper arm nozzles. Since wiper arm nozzles are not affected by wind pressure during vehicle operation and do not consume excess water, they spray almost all of the water onto the wiping area, achieving a better cleaning and wetting effect. Moreover, the cleaning effect is better, thus providing drivers with a better experience in terms of both appearance and use.

[0003] However, because current wiper arm nozzles on the market require extremely small dimensions and space to enclose the nozzle, the nozzle itself can only be made very small. The spray pattern is a dot-like shape, appearing as a jet of water on the glass. This jet-like water flow covers a small area with many unused areas, making it easy for the wipers to dry-wipe and damage the glass. This dot-like nozzle is also relatively thick, which not only reduces washer fluid utilization but also more easily obstructs the driver's view. Summary of the Invention

[0004] The first aspect of the present invention provides a wiper arm nozzle to solve the defects of the prior art where the spray area of ​​the spot-type wiper arm nozzle is small and the blank area is large, which makes the wiper easy to dry wipe and damage the glass.

[0005] To achieve the above objectives, a first aspect of the present invention provides a wiper arm nozzle, comprising:

[0006] The nozzle body is equipped with a water inlet;

[0007] The mounting part is disposed on the nozzle body, and its interior is hollow to form a mounting cavity. The bottom of the mounting cavity is connected to the water inlet. The mounting part has a first opening and a second opening at both ends.

[0008] A flow guide plate is inserted into the mounting cavity and partially located at the first opening and the second opening. The flow guide plate is provided with a first flow channel and a second flow channel. The first flow channel forms a first outlet at the first opening, and the second flow channel forms a second outlet at the second opening.

[0009] The first flow channel and the second flow channel are connected by a self-excited flow channel. The first flow channel gradually widens in the direction near the first outlet, and the second flow channel gradually widens in the direction near the second outlet.

[0010] The wiper arm nozzle features a first and a second water outlet, both of which widen towards the point of contact with the water source. A self-excited flow channel connects the first and second flow channels, causing the water jets from the two outlets to oscillate in a fan shape, resulting in a uniform S-shaped distribution of water particles within the fan-shaped area. This design ensures more even water flow, a larger coverage area, and fewer unused areas.

[0011] Preferably, the self-excited flow channel includes a flow divider disposed on the guide vane, and two opposing flow divider blocks are disposed inside the flow divider. A first flow divider is formed between the two flow divider blocks and the inner wall of the flow divider, and a second flow divider is formed between the two flow divider blocks. The second flow divider gradually widens in the direction close to the first outlet or the second outlet.

[0012] Preferably, when the guide vane is inserted into the mounting cavity, the portion of the guide vane located on both sides of the first flow channel and the second flow channel fits against the inner wall of the mounting portion to form a first water outlet channel and a second water outlet channel, wherein the flow directions of the first flow channel and the second flow channel are opposite.

[0013] Preferably, the first flow channel and the second flow channel are located on the same side of the guide vane; or

[0014] The first flow channel and the second flow channel are located on both sides of the guide vane.

[0015] Preferably, a limiting block is provided on the mounting part, and the limiting block is located below the second opening. When the guide plate is inserted into the mounting cavity, the limiting block abuts against the guide plate.

[0016] Preferably, the first opening is larger than the second opening, and the first opening forms the insertion end of the mounting portion.

[0017] Preferably, the limiting block is recessed to form a locking portion, and the guide plate is provided with an extension section, which can be inserted into the locking portion.

[0018] Preferably, the mounting part is integrally connected to the nozzle body.

[0019] A second aspect of the present invention provides a windshield wiper, comprising:

[0020] Wiper arms; and

[0021] As described in any of the above embodiments, the wiper arm nozzle is disposed on the wiper arm, and the first water outlet and the second water outlet are respectively oriented in two opposite directions of the wiper arm.

[0022] The wiper arm nozzles of this wiper spray from two directions, covering a large area and making it easy for the wiper arm to sweep. Because the wiper arm nozzles have a large spray coverage area and spray evenly, the wiper arm will not splash water far when it rotates, thus avoiding obstructing the driver's view.

[0023] A third aspect of the present invention provides an automobile comprising two windshield wipers as described in the above embodiments.

[0024] Since the car has the windshield wipers described in the above embodiments, the car has the aforementioned beneficial effects that the windshield wipers can achieve, which will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the wiper arm nozzle provided in the first aspect embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the nozzle body provided in an embodiment of the present invention;

[0028] Figure 3 This is a side view of the nozzle body provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of a flow guide provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the back structure of another flow guide provided in an embodiment of the present invention;

[0031] Figure 6 This is a front view of another flow guide provided in an embodiment of the present invention.

[0032] Figure 7 This is a schematic diagram of the structure of a windshield wiper provided in the second aspect embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the spot spray of a windshield wiper in the prior art;

[0034] Figure 9 yes Figure 8 Distribution diagram of the spot spray flow rate of the medium windshield wiper;

[0035] Figure 10 This is a schematic diagram of the wiper spray pattern of the present invention;

[0036] Figure 11 This is a windshield wiper spray flow distribution diagram of the present invention;

[0037] Figure 12 This is a schematic diagram of the self-excitation of the self-excitation flow channel of the guide vane of the present invention;

[0038] Figure 13 yes Figure 12 A magnified view of part a in the diagram.

[0039] Figure label:

[0040] 100. Wiper arm nozzle; 110. Nozzle body; 111. Water inlet; 120. Mounting part; 121. First opening; 122. Second opening; 123. Limiting block; 124. Snap-fit ​​part; 130. Guide vane; 131. First flow channel; 132. Second flow channel; 133. Flow channel wall; 134. Extension section; 140. Self-excited flow channel; 141. Flow divider; 1411. Flow divider block; 1412. First guide part; 1413. Second guide part; 200. Wiper arm; 210. Wiper arm. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] Combination Figure 8 and Figure 9 The existing wiper arm nozzles use a point-shooting structure, and the water sprayed from the wiper arm nozzles is in the form of a column. The large gaps between the water columns can cause the wiper arm to dry-brush during the swinging process, which can damage the glass.

[0043] like Figure 1 As shown, this application embodiment provides a wiper arm nozzle 100, including a nozzle body 110, a mounting part 120, and a guide vane 130. This wiper arm nozzle 100 consists of three components, has a simple manufacturing process, fewer parts, and can reduce manufacturing and labor costs.

[0044] Combination Figures 1 to 4The nozzle body 110 is provided with an inlet 111. The mounting part 120 is provided on the nozzle body 110 and has a hollow interior forming a mounting cavity. The bottom of the mounting cavity is connected to the inlet 111. The mounting part 120 has a first opening 121 and a second opening 122 at both ends. The guide vane 130 is inserted into the mounting cavity and is partially located at the first opening 121 and the second opening 122. The guide vane 130 is provided with a first flow channel 131 and a second flow channel 132. The first flow channel 131 forms a first outlet at the first opening 121, and the second flow channel 132 forms a second outlet at the second opening 122. The first flow channel 131 and the second flow channel 132 are connected by a self-excited flow channel 140. The first flow channel 131 gradually widens in the direction of the first outlet, and the second flow channel 132 gradually widens in the direction of the second outlet.

[0045] When the wiper arm nozzle 100 needs to spray water onto the glass, pressurized water enters the mounting cavity from the inlet 111. Under the action of the guide vane 130, the water flows through the first flow channel 131 and the second flow channel 132, respectively, and is sprayed out from the first outlet and the second outlet. Since the first opening 121 and the second opening 122 are located at opposite ends of the mounting portion 120, the water flows from the first outlet and the second outlet are in opposite directions. Because the first flow channel 131 is connected to a self-excited flow channel 140 near the first outlet, and the second flow channel 132 is connected to a self-excited flow channel 140 near the second outlet, the water sprayed from the first outlet and the second outlet will spread out in a fan-shaped pattern, swinging left and right, so that the water particles are evenly distributed in an S-shape within the fan-shaped area. Therefore, the area of ​​water sprayed on the glass is large, and the blank area is small, thus preventing the wiper from damaging the glass by dry wiping.

[0046] Combination Figure 12 and Figure 13 In one embodiment, the self-excited flow channel 140 includes a flow-dividing section 141 disposed on the guide vane 130. Two opposing flow-dividing blocks 1411 are disposed inside the flow-dividing section 141. A first flow-guiding section 1412 is formed between the two flow-dividing blocks 1411 and the inner wall of the flow-dividing section 141, and a second flow-guiding section 1413 is formed between the two flow-dividing blocks 1411. The second flow-guiding section 1413 gradually widens in the direction approaching the first outlet. The two first flow-guiding sections 1412 are located on both sides of the second flow-guiding section 1413. Water flowing from the two first flow-guiding sections 1412 and water flowing from the second flow-guiding section 1413 merge and enter the first or second outlet, exhibiting a cross-swaying state under the action of the inner wall of the first or second outlet.

[0047] In some specific embodiments, the angle between the fan-shaped water jets ejected from the first and second outlets can reach 140°-180°. This increases the coverage area of ​​the water jets.

[0048] When the guide vane 130 is inserted into the mounting cavity, the portions of the guide vane 130 on both sides of the first flow channel 131 and the second flow channel 132 are fitted against the inner wall of the mounting portion 120 to form a first water outlet channel and a second water outlet channel. It should be understood that the first flow channel 131 and the second flow channel 132 are groove structures on the surface of the guide vane 130. When the guide vane 130 is in close contact with the inner wall of the mounting portion 120, the water flow will be guided by the first and second water outlet channels, allowing the water to be sprayed evenly at the first and second water outlets. The flow directions of the first flow channel 131 and the second flow channel 132 are opposite. This allows for spraying from two directions, resulting in a larger coverage area.

[0049] like Figure 4 As shown, in one embodiment, the first flow channel 131 and the second flow channel 132 are located on the same side of the guide vane 130. The first flow channel 131 and the second flow channel 132 share the same water inlet channel. The water flows into the water inlet channel, then disperses at the intersection of the first flow channel 131 and the second flow channel 132 and enters the first flow channel 131 and the second flow channel 132 respectively, and then is sprayed out from the first outlet and the second outlet.

[0050] like Figure 5 and Figure 6 As shown, in another embodiment, the first flow channel 131 and the second flow channel 132 are located on opposite sides of the guide vane 130. The first flow channel 131 and the second flow channel 132 each have two independent inlet ends. Water flows into the first flow channel 131 and the second flow channel 132 from the two inlet ends respectively, and then is ejected from the first outlet and the second outlet. Compared to having the first flow channel 131 and the second flow channel 132 on the same side of the guide vane 130, this arrangement makes better use of the space within the guide vane 130, resulting in a smaller structure.

[0051] In this application, both the first flow channel 131 and the second flow channel 132 include two opposing flow channel walls 133, which gradually converge towards the interior of the mounting cavity from the first or second water outlet. The two flow channel walls 133 intersect each other, and in certain specific shapes, the first flow channel 131 and the second flow channel 132 are trapezoidal at the first opening 121 and the second opening 122. It should be noted that after the guide vane 130 is installed and sealed with the mounting part 120, under the action of the self-excited flow channel 140, the water jets ejected from the first and second water outlets can form a flat fan shape, and the water jets sway left and right. The water particles form an S-shaped uniform distribution within the fan-shaped area, making the ejected water jet more uniform.

[0052] Combination Figures 1 to 3In one embodiment, a limiting block 123 is provided on the mounting portion 120, and the limiting block 123 is located below the second opening 122. When the guide vane 130 is inserted into the mounting cavity, the limiting block 123 abuts against the guide vane 130. To prevent the guide vane 130 from easily loosening due to water pressure when inserted into the mounting cavity, thus affecting the spraying effect, the guide vane 130 and the mounting portion 120 are interference-fitted. The mounting portion 120 and the limiting block 123 together limit the guide vane 130 to ensure stable installation of the guide vane 130.

[0053] Furthermore, the first opening 121 is larger than the second opening 122, and the first opening 121 forms the insertion end of the mounting portion 120. The guide vane 130 is inserted into the mounting portion 120 through the first opening 121 and stops moving when it abuts against the limiting block 123. At this time, the guide vane 130 abuts against the limiting block 123 and the inner walls on both sides and the inner wall on the top of the mounting portion 120. In this way, inserting the guide vane 130 through the first opening 121 makes the installation of the wiper arm nozzle 100 more convenient.

[0054] Furthermore, the limiting block 123 is recessed to form a locking portion 124, which is groove-shaped. The guide vane 130 is provided with an extension section 134, which can be inserted into the locking portion 124. The extension section 134 and the groove opening are interference-fitted, that is, when the extension section 134 is inserted into the groove, the extension section 134 fits against the inner wall of the groove. In this way, when the guide vane 130 is not pressed into the mounting portion 120, water flow can be prevented from flowing out from the gap between the groove and the guide vane 130, thus avoiding affecting the spraying effect of the nozzle.

[0055] like Figure 1 As shown, in one embodiment, the mounting part 120 is part of the nozzle body 110. Both the mounting part 120 and the nozzle body 110 are plastic parts, which are integrally injection molded from plastic parts. This facilitates the manufacturing of the nozzle body 110. At the same time, the connection between the mounting part 120 and the nozzle body 110 is smooth, avoiding a large gap between the mounting part 120 and the nozzle body 110 when the guide vane 130 is inserted. This ensures good sealing when the guide vane 130 is inserted, thus guaranteeing the spraying efficiency.

[0056] This invention The wiper arm nozzle 100 consists of a nozzle body 110, a guide vane 130, and a mounting part 120. It has few parts, a simple structure, and is easy to install. The mounting part 120 is integrally connected to the nozzle body 110, and the guide vane 130 is interference-fitted with the mounting part 120, which makes the nozzle structure compact and can reduce manufacturing and labor costs.

[0057] Combination Figure 7 , Figure 10 and Figure 11As shown, a second aspect of the present invention provides a windshield wiper 200, including a wiper arm 210 and a wiper arm nozzle 100 of any of the above embodiments. The wiper arm nozzle 100 is disposed on the wiper arm 210, with a first water outlet and a second water outlet facing opposite directions from the wiper arm 210. Since the water sprayed from the first and second water outlets forms a swaying fan shape, the wiper arm nozzle 100 of the windshield wiper 200 sprays from two directions, resulting in a large coverage area and uniform spray, facilitating wiping by the wiper arm 210. Because the wiper arm nozzle 100 has a large spray coverage area and uniform spray, the wiper arm 210 does not splash water far when rotating, thus avoiding obstructing the driver's view.

[0058] A third aspect of the present invention provides an automobile comprising two windshield wipers 200 as described in the above embodiment. The two windshield wipers 200 are rotatably mounted on the automobile for spraying water and wiping the windshield of the automobile.

[0059] Since the automobile has the windshield wiper 200 of the above embodiment, the automobile has the aforementioned beneficial effects that the windshield wiper 200 can achieve, which will not be repeated here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wiper arm nozzle, characterized in that, include: The nozzle body (110) is provided with a water inlet (111). The mounting part (120) is disposed on the nozzle body (110), and its interior is hollow to form a mounting cavity. The bottom of the mounting cavity is connected to the water inlet (111). The mounting part (120) has a first opening (121) and a second opening (122) at both ends. A guide vane (130) is inserted into the mounting cavity and partially located at the first opening (121) and the second opening (122). The guide vane (130) is provided with a first flow channel (131) and a second flow channel (132). The first flow channel (131) forms a first outlet at the first opening (121), and the second flow channel (132) forms a second outlet at the second opening (122). The first flow channel (131) and the second flow channel (132) are connected by a self-excited flow channel (140). The first flow channel (131) gradually widens in the direction near the first outlet, and the second flow channel (132) gradually widens in the direction near the second outlet. The mounting portion (120) is provided with a limiting block (123), which is located below the second opening (122). When the guide plate (130) is inserted into the mounting cavity, the limiting block (123) abuts against the guide plate (130). The limiting block (123) is recessed to form a snap-fit ​​portion (124), and the guide plate (130) is provided with an extension section (134). The extension section (134) can be inserted into the snap-fit ​​portion (124) and is interference-fitted with the groove of the snap-fit ​​portion (124). When the guide vane (130) is inserted into the mounting cavity, the portion of the guide vane (130) on both sides of the first flow channel (131) and the second flow channel (132) is attached to the inner wall of the mounting part (120) to form a first water outlet channel and a second water outlet channel respectively, wherein the flow direction of the first flow channel (131) and the second flow channel (132) is opposite; based on the fact that the first flow channel (131) is connected to the self-excited flow channel (140) in the direction near the first water outlet and the second flow channel (132) is connected to the direction near the second water outlet, the water sprayed from the first water outlet and the second water outlet will spread in a fan shape that swings left and right to both ends, so that the water particles form an S-shaped uniform distribution in the fan-shaped area.

2. The wiper arm nozzle according to claim 1, characterized in that, The self-excited flow channel (140) includes a flow divider (141) disposed on the guide vane (130). The flow divider (141) has two opposing flow divider blocks (1411) disposed inside. A first flow guide (1412) is formed between the two flow divider blocks (1411) and the inner wall of the flow divider (141). A second flow guide (1413) is formed between the two flow divider blocks (1411). The second flow guide (1413) gradually widens in the direction close to the first outlet or the second outlet.

3. The wiper arm nozzle according to claim 1, characterized in that, The first flow channel (131) and the second flow channel (132) are located on the same side of the guide vane (130); or the first flow channel (131) and the second flow channel (132) are located on opposite sides of the guide vane (130); the angle between the fan-shaped water flow ejected from the first outlet and the second outlet reaches 140°-180°.

4. The wiper arm nozzle according to claim 1, characterized in that, The first opening (121) is larger than the second opening (122), and the first opening (121) forms the insertion end of the mounting part (120).

5. The wiper arm nozzle according to claim 1, characterized in that, The mounting part (120) is integrally connected to the nozzle body (110).

6. A windshield wiper, characterized in that, include: Wiper arm (210); as well as The wiper arm nozzle (100) as described in any one of claims 1 to 5 is disposed on the wiper arm (210), wherein the first water outlet and the second water outlet are respectively oriented in two opposite directions toward the wiper arm (210).

7. A car, characterized in that, Includes two windshield wipers as described in claim 6.

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