Telescopic icebreaking nozzle

Abstract

An outer sleeve assembly comprises a containing cavity and a center column, a telescopic pipe assembly comprises a telescopic pipe and a double-side self-locking piston, and the double-side self-locking piston divides the containing cavity into a rear liquid storage cavity. When washing liquid is introduced into the rear liquid storage cavity, the hydraulic pressure of the washing liquid pushes the telescopic pipe to move from the rear position to the front position through the double-side self-locking piston, the spray head is closed in the process to ensure that the telescopic pipe and the spray head are ejected out firstly, and when the double-side self-locking piston pushes the telescopic pipe to the front position, the spray head is opened, so that the washing liquid is sprayed out after the spray head extends out; and the washing liquid is prevented from leaking into the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, specifically to a telescopic ice-breaking nozzle. Background Technology

[0002] Telescopic nozzles on vehicles include extendable nozzle sections and are commonly used to spray detergent to clean sensing structures such as lidar, sensors, and cameras.

[0003] In cold environments, retractable nozzles often freeze. When the extendable nozzle part is frozen while the water inlet of the retractable nozzle is supplying water, the high water pressure often breaks through the control valve inside the retractable nozzle, causing the detergent to spray out before the nozzle part is broken and extended. Since the nozzle part is not extended, this detergent will leak into the vehicle, causing water leakage inside the vehicle. In severe cases, it can cause electrical short circuits inside the vehicle and lead to spontaneous combustion. Utility Model Content

[0004] The problem this invention aims to solve is to provide a telescopic ice-breaking nozzle that can spray washing liquid after the nozzle part extends out.

[0005] The technical solution adopted by this utility model to solve the above problems is: a telescopic ice-breaking nozzle, comprising:

[0006] An outer sleeve assembly, wherein the outer sleeve assembly has a receiving cavity; the outer sleeve assembly includes a central post disposed within the receiving cavity;

[0007] A telescopic tube assembly, wherein the telescopic tube assembly includes a telescopic tube and a double-sided self-locking piston disposed in the telescopic tube assembly; the double-sided self-locking piston divides the receiving cavity into a rear liquid storage chamber; the rear liquid storage chamber is used to introduce washing liquid, so that the hydraulic pressure of the washing liquid pushes the telescopic tube from the rear position to the front position of the receiving cavity via the double-sided self-locking piston; and

[0008] A nozzle, wherein the nozzle is disposed at the front end of the telescopic tube;

[0009] When the dual-sided self-locking piston is in the rear position of the receiving cavity, the nozzle is closed; when the dual-sided self-locking piston is in the front position of the receiving cavity, the nozzle is open.

[0010] Compared with the prior art, the outer sleeve assembly of this utility model includes a receiving cavity and a central column, and the telescopic tube assembly includes a telescopic tube and double-sided self-locking pistons, with the double-sided self-locking pistons separating the receiving cavity into a rear liquid storage cavity; when washing fluid is introduced into the rear liquid storage cavity, the hydraulic pressure of the washing fluid pushes the telescopic tube from the rear position to the front position through the double-sided self-locking pistons. During this process, the nozzle is closed to ensure that the telescopic tube and the nozzle are pushed out first. When the double-sided self-locking pistons push the telescopic tube to the front position, the nozzle opens, thereby ensuring that the washing fluid is sprayed out after the nozzle extends, preventing the washing fluid from leaking into the vehicle interior.

[0011] According to one embodiment of the present invention, the outer tube assembly includes an outer tube body, a sleeve cap disposed at the front end of the outer tube body, and a liquid inlet tube disposed at the rear end of the outer tube body; the receiving cavity is disposed between the outer tube body and the sleeve cap.

[0012] According to one embodiment of the present invention, the central column includes a communicating space disposed at the front end of the outer sleeve body and a fixing part disposed at the rear end of the outer sleeve body; the fixing part has at least one liquid inlet hole; the liquid inlet pipe supplies liquid to the rear liquid storage chamber through the liquid inlet hole.

[0013] According to one embodiment of the present invention, the telescopic tube has a transition channel inside; when the double-sided self-locking piston is in the front position of the receiving cavity, the rear liquid storage cavity is connected to the transition channel through the communicating space; the telescopic tube assembly further includes a baffle plate disposed at the rear end of the telescopic tube.

[0014] According to one embodiment of the present invention, the dual-sided self-locking piston includes a tight-fitting section near the rear end of the receiving cavity; the tight-fitting section includes an outer self-locking ring and an inner self-locking ring; when the rear liquid storage cavity receives liquid supply, the outer self-locking ring deforms toward the inner wall of the receiving cavity, and the inner self-locking ring deforms toward the outer wall of the central column; when the dual-sided self-locking piston is in the front position, the inner self-locking ring engages with the communicating space.

[0015] According to one embodiment of the present invention, the communicating space is configured as at least one liquid guide groove opened at the front end of the central column.

[0016] According to one embodiment of the present invention, the front end of the connected space is set to be tapered in order to form the connected space.

[0017] According to one embodiment of the present invention, the length of the central column is set to be less than the distance from the rear to the front of the double-sided self-locking piston, so as to form the communicating space.

[0018] According to one embodiment of the present invention, a reset structure is further included; the reset structure is sleeved between the sleeve cover and the baffle.

[0019] According to one embodiment of the present invention, a heating structure is further included; the structure includes at least one heating element; the outer sleeve assembly further includes a heating housing disposed outside the rear liquid storage chamber; the heating element is disposed inside the heating housing to heat the washing liquid in the rear liquid storage chamber. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the retracted state according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention in its retracted state;

[0022] Figure 3 This is a three-dimensional schematic diagram of the extended state according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the extended state according to a preferred embodiment of the present invention;

[0024] Figure 5 This is a perspective view of a double-sided self-locking piston according to a preferred embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the connected space of another preferred embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional view of the connected space of another preferred embodiment of the present invention. Detailed Implementation

[0027] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0028] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0029] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0030] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0031] Please see Figure 1-5 The telescopic ice-breaking nozzle shown includes an outer tube assembly 1, a telescopic tube assembly 2, and a nozzle 3. The outer tube assembly 1 has a receiving cavity 11 and includes a central column 12 disposed within the receiving cavity 11. The telescopic tube assembly 2 includes a telescopic tube 21 and a double-sided self-locking piston 22 disposed within the telescopic tube assembly 2. The double-sided self-locking piston 22 divides the receiving cavity 11 into a rear liquid storage chamber 111. The rear liquid storage chamber 111 is used to introduce washing liquid, so that the hydraulic pressure of the washing liquid pushes the telescopic tube 21 from the rear position to the front position of the receiving cavity 11 via the double-sided self-locking piston 22. The nozzle 3 is disposed at the front end of the telescopic tube 21. When the double-sided self-locking piston 22 is in the rear position of the receiving cavity 11, the nozzle 3 is closed; when the double-sided self-locking piston 22 is in the front position of the receiving cavity 11, the nozzle 3 is open.

[0032] In actual use, the outer sleeve assembly 1 of this utility model includes a receiving cavity 11 and a central column 12, and the telescopic tube assembly 2 includes a telescopic tube 21 and a double-sided self-locking piston 22. The double-sided self-locking piston 22 separates the receiving cavity 11 into a rear liquid storage cavity 111. When the rear liquid storage cavity 111 is filled with washing liquid, the hydraulic pressure of the washing liquid pushes the telescopic tube 21 from the rear position to the front position through the double-sided self-locking piston 22. During this process, the nozzle 3 is closed to ensure that the telescopic tube 21 and the nozzle 3 are pushed out first. When the double-sided self-locking piston 22 pushes the telescopic tube 21 to the front position, the nozzle 3 is opened, thereby ensuring that the nozzle 3 extends before spraying the washing liquid, preventing the washing liquid from leaking into the vehicle.

[0033] It is worth mentioning that the nozzle 3 includes a nozzle connecting section 31, a spray section 32 disposed at the front end of the nozzle connecting section 31, and a sealing ring 33 disposed at the nozzle connecting section 31. The sealing ring 33 is used to prevent the washing liquid from leaking from this position, which would cause a decrease in spray pressure. The nozzle connecting section 31 has an installation cavity 311. The front end of the telescopic tube 21 is inserted into the installation cavity 311 and abuts against the sealing ring 33. The spray section 32 has a pre-pressurization cavity 321 communicating with the installation cavity 311, a secondary pressurization cavity 322 communicating with the pre-pressurization cavity 321, and a water outlet channel 323 communicating with the secondary pressurization cavity 322. The pre-pressurization cavity 321 allows the washing liquid from the transition channel 211 to enter with less energy loss and gives the washing liquid a first pressurization. The secondary pressurization cavity 322 gives the washing liquid a second pressurization. The water outlet channel 323 adjusts the spray direction of the washing liquid and makes the washing liquid spray out in a fan shape.

[0034] Please continue reading. Figure 2 , Figure 4 The outer tube assembly 1 includes an outer tube body 13, a sleeve cap 14 disposed at the front end of the outer tube body 13, and an inlet tube 15 disposed at the rear end of the outer tube body 13; the receiving cavity 11 is disposed between the outer tube body 13 and the sleeve cap 14.

[0035] Please continue reading. Figure 2 , Figure 4 The central column 12 includes a communicating space 121 disposed at the front end of the outer tube body 13 and a fixing part 122 disposed at the rear end of the outer tube body 13; the fixing part 122 has at least one liquid inlet hole 1221; the liquid inlet pipe 15 supplies liquid to the rear liquid storage chamber 111 through the liquid inlet hole 1221.

[0036] Please continue reading. Figure 2 , Figure 4The telescopic tube 21 has a transition channel 211 inside; when the double-sided self-locking piston 22 is in the front position of the receiving cavity 11, the rear liquid storage cavity 111 is connected to the transition channel 211 through the communication space 121; the telescopic tube assembly 2 further includes a baffle 23 disposed at the rear end of the telescopic tube 21.

[0037] Please continue reading. Figure 2 , Figure 4 , Figure 5 The dual-sided self-locking piston 22 includes a tight-fitting section 221 near the rear end of the receiving cavity 11; the tight-fitting section 221 includes an outer self-locking ring 2211 and an inner self-locking ring 2212; when the rear liquid storage cavity 111 receives liquid supply, the outer self-locking ring 2211 deforms toward the inner wall of the receiving cavity 11, and the inner self-locking ring 2212 deforms toward the outer wall of the central column 12; when the dual-sided self-locking piston 22 is in the front position, the inner self-locking ring 2212 engages with the communicating space 121.

[0038] For details, please continue reading. Figure 2 The enlarged view in the lower right corner shows that when the rear liquid storage chamber 111 receives liquid supply in direction A, the outer self-locking ring 2211 deforms in direction B. The greater the hydraulic pressure, the tighter the outer self-locking ring 2211 is pressed against the inner wall of the receiving chamber 11, thus preventing the washing liquid from leaking towards the inner wall of the receiving chamber 11. The inner self-locking ring 2212 deforms in direction C. The greater the hydraulic pressure, the tighter the inner self-locking ring 2212 is pressed against the outer wall of the central column 12, thus preventing the washing liquid from leaking towards the outer wall of the central column 12. Through the design of simultaneous self-locking on both sides, the rear liquid storage chamber 111 can withstand a large hydraulic pressure without leakage, thus ensuring that the telescopic tube assembly 2 and the nozzle 3 can be stably pushed out first.

[0039] Furthermore, conventional pistons often form a seal by interfering with the outer wall of the piston and the inner wall of the rear liquid storage chamber 111. When the operating temperature is too high, the conventional piston may deform and shrink, causing the interfering fit to fail and resulting in leakage. However, the outer self-locking ring 2211 and the inner self-locking ring 2212 can be set with a larger dimensional margin. Even if the outer self-locking ring 2211 and the inner self-locking ring 2212 deform and shrink when the operating temperature is too high, the sealing performance can be guaranteed by the dimensional margin.

[0040] Please continue reading. Figure 4In this embodiment, the connecting space 121 is configured as at least one liquid guiding groove opened at the front end of the central column 12; multiple liquid guiding grooves are provided and are arranged circumferentially along the front end of the central column 12. Under this configuration, firstly, the multiple streams of washing liquid entering the transition channel 211 from the rear liquid storage chamber 111 through the connecting space 121 have uniform flow rates; secondly, the liquid guiding groove is formed by hollowing out part of the material while keeping the outer diameter of the front end of the central column 12 unchanged, so that when the double-sided self-locking piston 22 is in the front position, the inner self-locking ring 2212 is still supported by the outer wall of the central column 12, and since the double-sided self-locking piston 22 does not disengage from the front end of the central column 12 when it is in the front position, the inner self-locking ring 2212 is not easy to fold during the back-and-forth movement of the double-sided self-locking piston 22; if the inner self-locking ring 2212 folds, water leakage is likely to occur.

[0041] Please continue reading. Figure 6 In some other embodiments, the front end of the communicating space 121 is set to be tapered in order to form the communicating space 121; since the size of the tapered part is smaller than the inner self-locking ring 2212, when the double-sided self-locking piston 22 is in the front position, the inner self-locking ring 2212 disengages from the tapered part, so that the rear liquid storage chamber 111 communicates with the transition flow channel 211.

[0042] Please continue reading. Figure 7 In other embodiments, the length of the central column 12 is set to be less than the distance of the double-sided self-locking piston 22 from the rear position to the front position, so as to form a communicating space 121; that is, when the central column 12 is set to be shorter, the double-sided self-locking piston 22 disengages from the front end of the central column 12 when in the front position, so that the rear liquid storage chamber 111 communicates with the transition channel 211.

[0043] Please continue reading. Figure 1-4 It further includes a reset structure 4; the reset structure 4 is sleeved between the sleeve cover 14 and the baffle 23.

[0044] Specifically, the sleeve cover 14 includes a cover body 141, a plurality of hooks 142 distributed circumferentially along the cover body 141, and a connecting part 143 disposed at the rear end of the cover body 141; the outer sleeve body 13 includes a fixing plate 131 disposed at the front end; the fixing plate 131 has a plurality of slots 1311; when the connecting part 143 is inserted into the outer sleeve body 13, the hooks 142 are inserted into the slots 1311; the cover body 141 includes a front baffle 1411; the reset structure 4 is sleeved on the outside of the telescopic tube 21, and the rear end of the reset structure 4 abuts against the baffle 23, and the front end abuts against the front baffle 1411 via the connecting part 143; the telescopic tube 21 includes a limiting plate 212; the limiting plate 212 is configured to cooperate with the front baffle 1411 for limiting; when the limiting plate 212 contacts the front baffle 1411, the double-sided self-locking pistons 22 are in the front position.

[0045] Furthermore, when the sleeve cover 14 is subjected to a forward force, the engagement of the hook 142 and the slot 1311 prevents dislocation. When the sleeve cover 14 is subjected to a backward force, the engagement of the cover body 141 and the fixing plate 131 limits its movement. The reset structure 4 is located between the baffle 23 and the front baffle 1411. When the telescopic high-pressure nozzle needs to extend, the hydraulic thrust needs to overcome the friction generated by the double-sided self-locking pistons 22 and the elastic force generated by the reset structure 4. Therefore, reducing the friction generated by the loose section 222 during the extension process is beneficial to the smooth extension of the telescopic high-pressure nozzle. When the telescopic high-pressure nozzle needs to retract, the compressed reset structure 4 unfolds so that the telescopic tube assembly 2 and the nozzle 3 can be reset via the baffle 23. Therefore, reducing the friction generated by the loose section 222 during the extension process is beneficial to the smooth retraction of the telescopic high-pressure nozzle.

[0046] Furthermore, the limiting plate 212 ensures that when the telescopic tube 21 is pushed to the front position, the limiting plate 212 contacts the front baffle 1411. In this position, the positions of the double-sided self-locking pistons 22 correspond precisely to the communicating space 121, allowing the washing liquid to flow along the nozzle 3 even when the nozzle 3 is inevitably pushed out. Figure 4 The spray is emitted along the path indicated by the arrow.

[0047] It is worth mentioning that, in this configuration, the double-sided self-locking piston 22 functions as a piston sealing ring during its movement in the rear position and from the rear to the front position, ensuring that the washing liquid cannot be sprayed out before the nozzle 3 is fully ejected. When the double-sided self-locking piston 22 is in the front position, it functions as an opening valve, allowing the connecting space 121 to connect the rear liquid storage chamber 111 and the transition flow channel 211. The double-sided self-locking piston 22 integrates the functions of the piston sealing ring and the opening valve into one unit, saving material costs and the axial length of the entire telescopic high-pressure nozzle.

[0048] Please continue reading. Figure 2 , Figure 4 The device further includes a heating structure 5; including at least one heating element 51; the outer sleeve assembly 1 further includes a heating housing 16 disposed outside the rear liquid storage chamber 111; the heating element 51 is disposed inside the heating housing 16 so as to heat the washing liquid in the rear liquid storage chamber 111.

[0049] Specifically, the heating structure 5 of a conventional telescopic high-pressure nozzle is often located at the nozzle 3. However, because the flow rate of the washing liquid when the nozzle 3 sprays out is relatively fast, the washing liquid is sprayed out before it has a chance to be heated, resulting in poor heating effect. Furthermore, this positioning of the heating structure 5 also presents problems such as the nozzle 3 being too large and unsightly, and the repeated extension and retraction pulling on the heating structure 5's wires. When the rear liquid storage chamber 111 receives liquid, the washing liquid in the rear liquid storage chamber 111, in order to overcome the frictional force generated by the double-sided self-locking pistons 22 and the elastic force generated by the reset structure 4, [the washing liquid...]. The increase rate is relatively slow, which gives the heating structure 5 located on the outside of the rear liquid storage chamber 111 a longer heating time, so that the washing liquid can obtain a higher temperature. When the hot washing liquid in the rear liquid storage chamber 111 is sprayed out through the nozzle 3, it can not only heat the nozzle 3 and help dissolve the ice on the outer cover of the nozzle 3 and the ice on the water outlet channel 323, but also has a stronger cleaning effect, making the cleaning function better. At the same time, the position setting of the heating structure 5 also solves the problems of the nozzle 3 being too large, unsightly, and the repeated extension and retraction of the heating structure 5's wires.

[0050] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A telescopic ice-breaking nozzle, characterized in that, include: An outer tube assembly (1) having a receiving cavity (11); the outer tube assembly (1) includes a central column (12) disposed within the receiving cavity (11); A telescopic tube assembly (2), wherein the telescopic tube assembly (2) includes a telescopic tube (21) and a double-sided self-locking piston (22) disposed in the telescopic tube assembly (2); the double-sided self-locking piston (22) divides the receiving cavity (11) into a rear liquid storage chamber (111); the rear liquid storage chamber (111) is used to introduce washing liquid, so that the hydraulic pressure of the washing liquid pushes the telescopic tube (21) from the rear position to the front position of the receiving cavity (11) via the double-sided self-locking piston (22); and A nozzle (3), wherein the nozzle (3) is disposed at the front end of the telescopic tube (21); When the double-sided self-locking piston (22) is in the rear position of the receiving cavity (11), the nozzle (3) is closed; when the double-sided self-locking piston (22) is in the front position of the receiving cavity (11), the nozzle (3) is open.

2. The telescopic ice-breaking nozzle according to claim 1, characterized in that: The outer tube assembly (1) includes an outer tube body (13), a sleeve cap (14) disposed at the front end of the outer tube body (13), and an inlet tube (15) disposed at the rear end of the outer tube body (13); the receiving cavity (11) is disposed between the outer tube body (13) and the sleeve cap (14).

3. The telescopic ice-breaking nozzle according to claim 2, characterized in that: The central column (12) includes a communicating space (121) disposed at the front end of the outer tube body (13) and a fixing part (122) disposed at the rear end of the outer tube body (13); the fixing part (122) has at least one liquid inlet hole (1221); the liquid inlet pipe (15) supplies liquid to the rear liquid storage chamber (111) through the liquid inlet hole (1221).

4. The telescopic ice-breaking nozzle according to claim 3, characterized in that: The telescopic tube (21) has a transition channel (211) inside; when the double-sided self-locking piston (22) is in the front position of the receiving cavity (11), the rear liquid storage cavity (111) is connected to the transition channel (211) through the communication space (121); the telescopic tube assembly (2) further includes a baffle (23) disposed at the rear end of the telescopic tube (21).

5. The telescopic ice-breaking nozzle according to claim 4, characterized in that: The dual-sided self-locking piston (22) includes a tight-fitting section (221) near the rear end of the receiving cavity (11); the tight-fitting section (221) includes an outer self-locking ring (2211) and an inner self-locking ring (2212); when the rear liquid storage cavity (111) receives liquid supply, the outer self-locking ring (2211) deforms toward the inner wall of the receiving cavity (11), and the inner self-locking ring (2212) deforms toward the outer wall of the central column (12); when the dual-sided self-locking piston (22) is in the front position, the inner self-locking ring (2212) engages with the communicating space (121).

6. The telescopic ice-breaking nozzle according to claim 5, characterized in that: The communicating space (121) is configured as at least one liquid guide channel opened at the front end of the central column (12).

7. The telescopic ice-breaking nozzle according to claim 5, characterized in that: The front end of the connecting space (121) is set to be tapered in order to form the connecting space (121).

8. The telescopic ice-breaking nozzle according to claim 5, characterized in that: The length of the central column (12) is set to be less than the distance from the rear to the front of the double-sided self-locking piston (22) so as to form the communicating space (121).

9. The telescopic ice-breaking nozzle according to claim 4, characterized in that: It further includes a reset structure (4); the reset structure (4) is fitted between the sleeve cap (14) and the baffle (23).

10. The telescopic ice-breaking nozzle according to claim 1, characterized in that: The device further includes a heating structure (5); the device includes at least one heating element (51); the outer sleeve assembly (1) further includes a heating housing (16) disposed outside the rear liquid storage chamber (111); the heating element (51) is disposed inside the heating housing (16) to heat the washing liquid in the rear liquid storage chamber (111).

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