Telescopic cleaning nozzle and vehicle

Abstract

The utility model relates to nozzle structure technical field especially relates to a telescopic cleaning nozzle and vehicle, include: casing assembly, piston subassembly, elastic piece. When the piston is located in the cleaning position, the cleaning mouth can stretch out the first inner chamber, when the piston is located in the self -cleaning position, the self -cleaning mouth can stretch out the first inner chamber and be located in the crack between telescopic cleaning nozzle and vehicle outer trim piece. Through setting up the self -cleaning mouth on the piston, when the piston moves under the action of water flow pressure and is located in the self -cleaning position, the self -cleaning mouth can stretch out the first inner chamber and be located in the crack between telescopic cleaning nozzle and vehicle outer trim piece, clean the dust and dirt accumulated in the crack, replace manual cleaning, improve the cleaning efficiency. And also can clean at any time in the process of driving, convenient operation. The self -cleaning mouth is inclined along the height direction and sets up, makes the water flow that the self -cleaning mouth sprays in the crack inside forms a certain impact annular water flow, improves the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of nozzle structure technology, and in particular to a telescopic cleaning nozzle and vehicle. Background Technology

[0002] With the development of autonomous driving technology, the adaptability of intelligent driving sensors to various environments is becoming increasingly demanding, leading to a growing number of intelligent driving sensors being equipped with cleaning devices. To maintain the vehicle's aesthetics, the nozzles are designed as concealed telescopic nozzles. This inevitably creates a gap between the telescopic nozzles and the vehicle's exterior trim. Because this gap is exposed to the outside for extended periods, it easily accumulates dust and dirt, requiring manual cleaning, which is quite inconvenient. Utility Model Content

[0003] This utility model provides a telescopic cleaning nozzle and a vehicle to solve the technical problem of inconvenient cleaning of the gap between the telescopic nozzle and the vehicle's exterior trim.

[0004] This utility model provides a telescopic cleaning nozzle, the telescopic cleaning nozzle comprising: A housing assembly having a water inlet and a first inner cavity communicating with the water inlet; A piston assembly includes a piston and a cover, the cover being disposed on the piston, the piston being disposed within a first inner cavity, the piston being movable relative to the housing assembly between an initial position, a cleaning position, and a self-cleaning position, the piston being provided with a cleaning port and a self-cleaning port that are capable of communicating with the first inner cavity, the self-cleaning port being inclined along the height direction; An elastic element, sleeved on the piston, is used to drive the piston back to the initial position; When the piston is in the cleaning position, the cleaning port can extend out of the first inner cavity; when the piston is in the self-cleaning position, the self-cleaning port can extend out of the first inner cavity and be located in the gap between the telescopic cleaning nozzle and the vehicle exterior trim.

[0005] In one embodiment of the present invention, a first flow channel is provided between the cleaning port and the first inner cavity, and a second flow channel is provided between the self-cleaning port and the first inner cavity. When the piston is in the cleaning position, the cleaning port and the first inner cavity are connected through the first flow channel. When the piston is in the self-cleaning position, the self-cleaning port and the first inner cavity are connected through the second flow channel.

[0006] In one embodiment of the present invention, the piston has a second inner cavity, and an isolation plate is disposed in the second inner cavity. The housing assembly includes a housing and a piston guide sleeved inside the housing. The piston is sleeved inside the piston guide, and the outer periphery of the piston and the piston guide are slidably sealed. A guide post is disposed on the inner bottom wall of the housing, and the piston is sleeved on the guide post. The isolation plate is inserted into the guide post and divides the second inner cavity into a first part and a second part that are independent of each other. The end face edge of the guide post is provided with a first notch corresponding to the first part and a second notch corresponding to the second part. The first part and the first notch communicate to form a first flow channel, and the second part and the second notch communicate to form a second flow channel.

[0007] In one embodiment of the present invention, the length of the first notch along the axial direction of the guide post is greater than the length of the second notch along the axial direction of the guide post.

[0008] In one embodiment of the present invention, the length of the first notch along the axial direction of the guide post and the length of the second notch along the axial direction of the guide post are both less than the axial length of the guide post.

[0009] In one embodiment of this utility model, a heating element is embedded in the outer wall of the housing, and the piston guide is made of a thermally conductive material.

[0010] In one embodiment of the present invention, the number of heating elements is multiple and they are evenly distributed along the circumference of the housing.

[0011] In one embodiment of the present invention, a heat-conducting element is embedded in the cover body, and the heat-conducting element is arranged around the circumference of the cover body.

[0012] In one embodiment of the present invention, an anti-rotation structure is provided between the piston guide and the piston. The outer periphery of the piston has a first plane, and the inner wall of the piston guide has a second plane. The first plane and the second plane are correspondingly arranged and cooperate with each other to form the anti-rotation structure.

[0013] This utility model also provides a vehicle, including an exterior trim piece and a telescopic cleaning nozzle as described above, wherein the telescopic cleaning nozzle is disposed within the exterior trim piece.

[0014] The beneficial effects of this utility model are as follows: This utility model proposes a telescopic cleaning nozzle with a self-cleaning port on the piston. When the piston moves under water pressure and reaches the self-cleaning position, the self-cleaning port extends out of the first inner cavity and is located in the gap between the telescopic cleaning nozzle and the vehicle's exterior trim, cleaning the dust and dirt accumulated in the gap. This replaces manual cleaning and improves cleaning efficiency. Furthermore, cleaning can be performed at any time while driving, making it convenient to operate. The self-cleaning port is inclined along the height direction, causing the water jet from the self-cleaning port to form a ring-shaped water flow with a certain impact force inside the gap, improving the cleaning effect. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 Provided in one embodiment of this utility model Figure 1 Sectional view at point AA; Figure 3 This is an exploded view of the overall structure provided in one embodiment of the present invention; Figure 4 This is a bottom view of the cover provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of a piston structure provided in one embodiment of the present invention; Figure 6 This is provided in one embodiment of the present utility model. Figure 5 Sectional view at point BB; Figure 7 This is provided in one embodiment of the present utility model. Figure 5 Sectional view at CC; Figure 8 This is a top view of a piston guide provided in one embodiment of the present invention; Figure 9 This is a schematic diagram of the internal structure of the shell provided in one embodiment of the present invention; Figure 10 This is a schematic diagram showing the installation of the telescopic cleaning nozzle and the interior panel in one embodiment of the present invention; Figure 11 This is a schematic diagram showing the piston in the cleaning position according to one embodiment of the present invention; Figure 12 This is a schematic diagram showing the state of the piston between the cleaning position and the self-cleaning position according to one embodiment of the present invention; Figure 13 This is a schematic diagram showing the piston in the self-cleaning position according to one embodiment of the present invention.

[0017] The attached figures are labeled as follows: 1-Housing assembly; 11-Housing; 111-Inlet; 112-First inner cavity; 113-Guide post; 113a-First notch; 113b-Second notch; 12-Piston guide; 121-Second plane; 2-Piston; 21-Self-cleaning port; 22-Cleaning port; 23-Second inner cavity; 231-First part; 232-Second part; 24-Blocking plate; 25-Cover groove; 26-First plane; 3-Gap; 4-Cover; 41-Heat conductor; 5-Elastic element; 6-Heating element; 7-Sealing ring; 8-Vehicle exterior trim; 9-Gap. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0021] Telescopic cleaning nozzles are installed between the vehicle exterior trim pieces 8. When the piston 2 is in the initial position, the upper surface of the cover 4 is flush with the upper surface of the vehicle exterior trim piece 8, or the upper surface of the cover 4 is lower than the upper surface of the vehicle exterior trim piece 8, to improve the aesthetics of the vehicle exterior trim piece 8. At this time, a gap 3 is formed between the outer peripheral sidewall of the cover 4 and the sidewall of the vehicle exterior trim piece 8.

[0022] Please see Figures 1 to 13 , Figure 1 A telescopic cleaning nozzle is provided as an embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the telescopic cleaning nozzle includes: The housing assembly 1 has a water inlet 111 and a first inner cavity 112 that communicates with the water inlet 111. The piston assembly includes a piston 2 and a cover 4. The cover 4 is disposed on the piston 2. The piston 2 is disposed in the first inner cavity 112. The piston 2 can move relative to the housing assembly 1 between an initial position, a cleaning position and a self-cleaning position. The piston 2 is provided with a cleaning port 22 and a self-cleaning port 21 that can communicate with the first inner cavity 112. The self-cleaning port 21 is inclined along the height direction. The elastic element 5 is sleeved on the piston 2 and is used to drive the piston 2 to return to its initial position. When the piston 2 is in the cleaning position, the cleaning port 22 can extend out of the first inner cavity 112; when the piston 2 is in the self-cleaning position, the self-cleaning port 21 can extend out of the first inner cavity 112 and is located in the gap 3 between the telescopic cleaning nozzle and the vehicle exterior trim 8.

[0023] Specifically, the housing assembly 1 has a first inner cavity 112, which is closed at the bottom and open at the top; that is, the housing assembly 1 is a hollow structure, closed at the bottom and open at the top. A water inlet 111 is provided on the outer side wall at the bottom of the housing assembly 1, which communicates with the first inner cavity 112, allowing the vehicle's washing liquid and water to enter the first inner cavity 112 from the water inlet 111.

[0024] The piston assembly includes a piston 2 and a cover 4. The cover 4 is disposed on top of the piston 2, and its shape can be customized. The piston 2 is snapped into a cover groove 25 on its top. The piston 2 is disposed within a first inner cavity 112 and can move up and down within the first inner cavity 112, that is, the piston 2 can move relative to the housing assembly 1 between an initial position, a cleaning position, and a self-cleaning position. The upward movement height of the piston 2 is controlled by an external washing pump by adjusting the water pressure. The bottom of the side wall of the piston 2 slides and seals against the side wall of the first inner cavity 112, preventing washing liquid and water from flowing between the side wall of the piston 2 and the side wall of the first inner cavity 112. The outer wall of the piston 2 is provided with a cleaning port 22 and a self-cleaning port 21 that communicate with the first inner cavity 112. The heights of the cleaning port 22 and the self-cleaning port 21 can be the same or different. The self-cleaning port 21 is inclined with the outer side higher than the inner side. In this embodiment, the telescopic cleaning nozzle can be cylindrical in shape. In other embodiments, it can also be other shapes, which will not affect the implementation of this embodiment.

[0025] The initial position is the position of piston 2 when its bottom wall contacts the bottom wall of housing assembly 1. At this time, there is no connection between the water inlet 111 and the first inner cavity 112, and no washing liquid or water is sprayed out from the cleaning port 22 and the self-cleaning port 21. The cleaning position is the position of piston 2 when the first inner cavity 112 is connected to the cleaning port 22. As washing liquid and water enter the first inner cavity 112 from the water inlet 111, piston 2 moves upward under the pressure of the mixture of washing liquid and water. When piston 2 moves to the point where the cleaning port 22 is connected to the first inner cavity 112, the cleaning port 22 extends out of the first inner cavity 112, and the cleaning port 22 sprays out the mixture to clean the intelligent driving sensor. Similarly, when the mixture enters the first inner cavity 112 through the water inlet 111, piston 2 moves upward under the pressure of the mixture until the self-cleaning port 21 is connected to the first inner cavity 112, at which point piston 2 is in the self-cleaning position. The self-cleaning port 21 extends out of the first inner cavity 112 and is located in the gap 3 between the piston 2 and the vehicle exterior trim 8. The self-cleaning port 21 sprays a mixture to clean the gap 3 between the telescopic cleaning nozzle and the vehicle exterior trim 8. The initial position is at the bottom, and the height of the cleaning position and the self-cleaning position are determined by the height of the cleaning port 22 and the self-cleaning port 21.

[0026] The elastic element 5 is a spring, which is sleeved on the outer wall of the piston 2. A stepped structure is provided at the bottom of the side wall of the piston 2. The upper end of the spring abuts against the inner wall of the first inner cavity 112, and the lower end abuts against the stepped structure of the side wall of the piston 2, so that the elastic element 5 can drive the piston 2 to reset to the initial position.

[0027] The water inlet 111 is located at the bottom of the outer periphery of the housing 11, or the water inlet 111 is located on the bottom wall of the housing 11.

[0028] In this embodiment, by providing a self-cleaning port 21 on the piston 2, when the piston 2 moves under the action of water pressure and is in the self-cleaning position, the self-cleaning port 21 can extend out of the first inner cavity 112 and be located in the gap 3 between the telescopic cleaning nozzle and the vehicle exterior trim 8, cleaning the dust and dirt accumulated in the gap 3, replacing manual cleaning and improving cleaning efficiency. Furthermore, cleaning can be performed at any time during driving, making operation convenient. Since the gap 3 formed between the cover 4 and the vehicle exterior trim 8 is an annular gap, the water flow sprayed from the self-cleaning port 21 can form an annular water flow inside the gap 3. The self-cleaning port 21 is inclined along the height direction, so that the water flow sprayed from the self-cleaning port 21 forms an annular water flow with a certain impact force inside the gap 3, improving the cleaning effect.

[0029] In one embodiment, a first flow channel is provided between the cleaning port 22 and the first inner cavity 112, and a second flow channel is provided between the self-cleaning port 21 and the first inner cavity 112. When the piston 2 is in the cleaning position, the cleaning port 22 and the first inner cavity 112 are connected through the first flow channel, and when the piston 2 is in the self-cleaning position, the self-cleaning port 21 and the first inner cavity 112 are connected through the second flow channel.

[0030] The cleaning port 22 is connected to the first inner cavity 112 via the first flow channel, and the self-cleaning port 21 is connected to the first inner cavity 112 via the second flow channel. The first and second flow channels can be connected or independent of each other. When the piston 2 is not moved to the cleaning or self-cleaning position, neither the first nor the second flow channel is connected, and the cleaning port 22 and the self-cleaning port 21 are not working. By setting the first and second flow channels, the water output from the cleaning port 22 and the self-cleaning port 21 can be controlled, preventing the washing liquid and water from being discharged before the cleaning port 22 and the self-cleaning port 21 extend out of the first inner cavity 112, thus avoiding resource waste and affecting the cleaning effect.

[0031] In another embodiment, when the piston 2 is in the self-cleaning position, the second flow channel connects the self-cleaning port 21 with the first inner cavity 112, and at the same time, the first flow channel also connects the cleaning port 22 with the first inner cavity 112.

[0032] In some implementations, such as Figure 2 , Figure 3 , Figure 6 and Figure 9As shown, piston 2 has a second inner cavity 23, and a partition plate 24 is provided in the second inner cavity 23. The housing assembly 1 includes a housing 11 and a piston guide 12 fitted inside the housing 11. Piston 2 is fitted inside the piston guide 12, and the outer periphery of piston 2 is slidably sealed with piston guide 12. A guide post 113 is provided on the inner bottom wall of housing 11. Piston 2 is fitted on the guide post 113. The partition plate is inserted into the guide post 113 and divides the second inner cavity 23 into a first part 231 and a second part 232 that are independent of each other. The end face edge of the guide post 113 is provided with a first notch 113a corresponding to the first part 231 and a second notch 113b corresponding to the second part 232. The first part 231 and the first notch 113a can communicate to form a first flow channel, and the second part 232 and the second notch 113b can communicate to form a second flow channel.

[0033] The piston 2 has a second inner cavity 23, with an opening at the bottom, which is also the bottom opening of the piston 2. Both the cleaning port 22 and the self-cleaning port 21 communicate with the second inner cavity 23. A partition plate 24 is provided on the top wall of the second inner cavity 23, extending downwards. The piston guide 12 is a hollow cylinder with openings at both the top and bottom. The lower end of the piston guide 12 abuts against the bottom wall of the housing 11. The top opening of the piston guide 12 has a sliding seal between its inner wall and the outer periphery of the piston 2, allowing the piston 2 to enter and exit through the top opening of the piston guide 12 while preventing the mixture from flowing out between the piston guide 12 and the piston 2. The top surface of the piston guide 12 extends radially outwards to form a flange, and the lower end surface of the flange abuts against the upper end surface of the housing 11, thus fixing the piston guide 12 within the housing 11. The piston guide 12 is fixed relative to the housing 11, and the piston guide 12 can be assembled into the housing 11 by a heat assembly process or adhesive.

[0034] The piston 2 is fitted onto the outer periphery of the guide post 113, that is, the piston 2 is fitted onto the outer periphery of the guide post 113 through the second inner cavity 23. The upper end face of the guide post 113 is provided with a guide groove extending vertically, and the partition plate 24 is inserted into the guide post 113 through the guide groove. The partition plate 24 divides the second inner cavity 23 into two independent parts: a first part 231 and a second part 232. The longitudinal cross-sectional areas of the first part 231 and the second part 232 may be the same or different. The upper end face edge of the guide post 113 is provided with a first notch 113a and a second notch 113b, which extend vertically downwards. The first notch 113a and the second notch 113b are not connected to each other, and the first notch 113a and the second notch 113b may be arranged opposite each other on the outer periphery of the guide post 113. The first part 231 of the second inner cavity 23 communicates with the first notch 113a to form a first flow channel, and the second part 232 of the second inner cavity 23 communicates with the second notch 113b to form a second flow channel. The first notch 113a and the second notch 113b are independent of each other, and the first part 231 and the second part 232 of the second inner cavity 23 are independent of each other, thus the first flow channel and the second flow channel are independent of each other. By setting the piston guide 12 and the guide post 113, the piston 2 can be guided when moving in the vertical direction, improving the smoothness of the piston 2's movement. The first notch 113a and the second notch 113b have simple structures and are easy to manufacture. The independence of the first flow channel and the second flow channel allows the cleaning port 22 and the self-cleaning port 21 to be controlled independently, so that the cleaning operation and the self-cleaning operation can be operated independently, which is convenient to use and saves resources.

[0035] In some implementations, such as Figure 2 and Figure 9 As shown, the length of the first notch 113a along the axial direction of the guide post 113 is greater than the length of the second notch 113b along the axial direction of the guide post 113.

[0036] The vertical length of the first notch 113a is greater than the vertical length of the second notch 113b, resulting in the bottom height of the first notch 113a being lower than the bottom height of the second notch 113b. Driven by the mixture, the piston 2 moves upwards, with its bottom first passing through the first notch 113a. When the bottom height of the piston 2 is higher than the first notch 113a (cleaning position), the first inner cavity 112 connects to the first notch 113a, meaning the first inner cavity 112 connects to the first flow channel, allowing the mixture to enter the cleaning port 22 through the first notch 113a and the second inner cavity 23. Simultaneously, because the bottom of the piston 2 does not reach the height of the second notch 113b, the first inner cavity 112 does not connect to the second notch 113b, preventing the washing liquid and water from entering the self-cleaning port 21 through the second notch 113b. When piston 2 continues to move upward until its bottom is higher than the bottom of the second notch 113b (self-cleaning position), the first inner cavity 112 and the second notch 113b become connected. The mixture enters the self-cleaning port 21 through the second notch 113b and the second inner cavity 23 for self-cleaning. This structure can close the self-cleaning port 21 during cleaning operations, preventing it from interfering with normal cleaning. Furthermore, the piston 2's extension and retraction height can be adjusted by controlling the pressure of the external washing pump, allowing switching between cleaning and self-cleaning functions for ease of use.

[0037] In some implementations, such as Figure 2 and Figure 9 As shown, the length of the first notch 113a along the axial direction of the guide post 113 and the length of the second notch 113b along the axial direction of the guide post 113 are both less than the axial length of the guide post 113.

[0038] Specifically, the distances between the bottom of the first notch 113a and the bottom of the second notch 113b and the bottom wall of the housing 11 are both greater than zero. The first flow channel can only be opened when the piston 2 moves upward and the bottom of the piston 2 exceeds the bottom of the first notch 113a. At the same time, the cleaning port 22 starts spraying water, realizing the delayed water spraying function that starts spraying water only after the piston 2 moves upward to a certain height. When the elastic element 5 drives the piston 2 to return to the initial position, the height of the bottom of the piston 2 is lower than the height of the bottom of the first notch 113a and the second notch 113b. Neither the cleaning port 22 nor the self-cleaning port 21 is open. Under atmospheric pressure, the mixed liquid will not flow back from the inlet 111 to the external washing pot, realizing the backflow prevention function (similar to the function of a check valve).

[0039] In some implementations, such as Figure 2 As shown, a heating element 6 is embedded in the outer wall of the housing 11, and the piston guide 12 is made of a heat-conducting material.

[0040] The heating element 6 can be an electric heater or other heat-generating component. The outer periphery of the housing 11 has a radially outward protrusion, within which a placement groove for the heating element 6 is provided, and the heating element 6 is correspondingly placed within the placement groove. Multiple protrusions and heating elements 6 can be provided, arranged circumferentially along the outer periphery of the housing 11. The piston guide 12 can be made of a highly thermally conductive metal, enabling rapid heat transfer from the heating element 6 to the cover 4, thus increasing the speed of heat transfer from the heating element 6 to the periphery of the cover 4. The housing 11 can be an injection-molded part, or it can also be made of a highly thermally conductive metal to improve the efficiency and effectiveness of heat transfer to the cover 4.

[0041] In some implementations, such as Figure 2 and Figure 4 As shown, a heat-conducting component 41 is embedded in the cover body 4, and the heat-conducting component 41 is arranged around the circumference of the cover body 4.

[0042] The heat-conducting component 41 is made of a metal material with good thermal conductivity. The heat-conducting component 41 is horizontally embedded around the bottom of the cover 4 and extends upwards to the top of the cover 4. For example, the heat-conducting component 41 is a U-shaped or O-shaped metal sheet, and its height is slightly less than or equal to the height of the cover 4. The entire heating process is as follows: heating element 6 generates heat --> housing 11, piston guide 12 --> cover 4 (heat-conducting component 41) --> periphery of the cover 4. This arrangement allows the heat generated by the heating element 6 during operation to be quickly conducted to the periphery of the cover 4, achieving a rapid ice-melting effect.

[0043] In some implementations, such as Figure 2 As shown, there are multiple heating elements 6, which are evenly distributed along the circumference of the housing 11.

[0044] The more heating elements 6 there are, the better the heating effect and the higher the ice melting efficiency.

[0045] In some embodiments, an anti-rotation structure is provided between the piston guide 12 and the piston 2.

[0046] The anti-rotation structure prevents the piston 2 from rotating when it rises or falls, thereby limiting the cleaning port 22 and the self-cleaning port 21.

[0047] In some implementations, such as Figure 7 and Figure 8 As shown, the outer periphery of the piston 2 has a first plane 26, and the inner wall of the piston guide 12 has a second plane 121. The first plane 26 and the second plane 121 are correspondingly arranged and cooperate with each other to form an anti-rotation structure.

[0048] The outer side wall of piston 2 has a first plane 26 extending through its axial direction, and the inner side wall of piston guide 12 has a second plane 121 extending through its axial direction. The first plane 26 and the second plane 121 are correspondingly arranged and can cooperate with each other. When piston 2 moves in the vertical direction, the cooperation between the first plane 26 and the second plane 121 can prevent piston 2 from rotating relative to piston guide 12, thereby playing an anti-rotation role.

[0049] In some implementations, such as Figure 3 As shown, the outer peripheral sidewall of the housing 11 is fitted with a sealing ring 7, which can seal the housing 11 of the telescopic cleaning nozzle with the vehicle when the telescopic cleaning nozzle is installed on the vehicle, preventing the mixed liquid in the telescopic cleaning nozzle from flowing into the vehicle from between the housing 11 and the vehicle.

[0050] This embodiment also provides a vehicle, including an exterior trim piece 8 and a telescopic cleaning nozzle as described in the above embodiment, the telescopic cleaning nozzle being disposed within the exterior trim piece 8.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A telescopic cleaning nozzle, characterized in that, include: A housing assembly having a water inlet and a first inner cavity communicating with the water inlet; A piston assembly includes a piston and a cover, the cover being disposed on the piston, the piston being disposed within a first inner cavity, the piston being movable relative to the housing assembly between an initial position, a cleaning position, and a self-cleaning position, the piston being provided with a cleaning port and a self-cleaning port that are capable of communicating with the first inner cavity, the self-cleaning port being inclined along the height direction; An elastic element, sleeved on the piston, is used to drive the piston back to the initial position; When the piston is in the cleaning position, the cleaning port can extend out of the first inner cavity; when the piston is in the self-cleaning position, the self-cleaning port can extend out of the first inner cavity and be located in the gap between the telescopic cleaning nozzle and the vehicle exterior trim.

2. The telescopic cleaning nozzle according to claim 1, characterized in that, A first flow channel is provided between the cleaning port and the first inner cavity, and a second flow channel is provided between the self-cleaning port and the first inner cavity. When the piston is in the cleaning position, the cleaning port and the first inner cavity are connected through the first flow channel. When the piston is in the self-cleaning position, the self-cleaning port and the first inner cavity are connected through the second flow channel.

3. The telescopic cleaning nozzle according to claim 2, characterized in that, The piston has a second inner cavity, in which a partition plate is disposed. The housing assembly includes a housing and a piston guide sleeved within the housing. The piston is sleeved within the piston guide, and the outer periphery of the piston and the piston guide are slidably sealed. A guide post is disposed on the inner bottom wall of the housing, and the piston is sleeved on the guide post. The partition plate is inserted into the guide post and divides the second inner cavity into a first part and a second part that are independent of each other. The end face edge of the guide post is provided with a first notch corresponding to the first part and a second notch corresponding to the second part. The first part and the first notch communicate to form the first flow channel, and the second part and the second notch communicate to form the second flow channel.

4. The telescopic cleaning nozzle according to claim 3, characterized in that, The length of the first notch along the axial direction of the guide post is greater than the length of the second notch along the axial direction of the guide post.

5. The telescopic cleaning nozzle according to claim 3, characterized in that, The lengths of the first notch along the axial direction of the guide post and the lengths of the second notch along the axial direction of the guide post are both less than the axial length of the guide post.

6. The telescopic cleaning nozzle according to claim 3, characterized in that, The outer wall of the housing is embedded with a heating element, and the piston guide is made of a thermally conductive material.

7. The telescopic cleaning nozzle according to claim 6, characterized in that, The number of heating elements is multiple and they are evenly distributed along the circumference of the housing.

8. The telescopic cleaning nozzle according to any one of claims 1-7, characterized in that, The cover is embedded with a heat-conducting element, which is arranged around the circumference of the cover.

9. The telescopic cleaning nozzle according to any one of claims 3-7, characterized in that, An anti-rotation structure is provided between the piston guide and the piston. The outer periphery of the piston has a first plane, and the inner wall of the piston guide has a second plane. The first plane and the second plane are correspondingly arranged and cooperate with each other to form the anti-rotation structure.

10. A vehicle, characterized in that, It includes a vehicle exterior trim piece and a telescopic cleaning nozzle as described in any one of claims 1 to 9, wherein the telescopic cleaning nozzle is disposed within the vehicle exterior trim piece.

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