Bilateral self-locking piston and telescopic icebreaking nozzle

Abstract

The double-side self-locking piston is installed in the telescopic icebreaking nozzle and comprises a close-fitting section, the close-fitting section comprises at least one self-locking ring, the self-locking ring deforms towards an installation wall in the telescopic icebreaking nozzle when subjected to hydraulic pressure of washing liquid, and the larger the hydraulic pressure is, the smaller the self-locking ring deforms towards the installation wall in the telescopic icebreaking nozzle, and the larger the self-locking ring deforms towards the installation wall in the telescopic icebreaking nozzle. The self-locking ring is extruded more tightly, so that the double-side self-locking piston can bear a larger hydraulic value; the loose matching section is arranged to be in loose matching with an inner mounting wall of the telescopic icebreaking nozzle so as to reduce friction with the mounting wall, so that the double-side self-locking piston is conveniently hydraulically pushed by washing liquid to achieve the function of opening or closing the telescopic icebreaking nozzle, and support is provided for the function that the spray head end of the telescopic icebreaking nozzle is firstly ejected out and then the washing liquid is sprayed out.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, specifically to a double-sided self-locking piston and telescopic ice-breaking nozzle. Background Technology

[0002] Telescopic nozzles are used in vehicles to clean components such as lidar, sensors, and cameras. Their telescopic function allows the nozzle to extend when cleaning fluid is needed and retract when not needed. In addition, the telescopic nozzle has a certain ice-breaking ability when it encounters ice.

[0003] Existing telescopic nozzles typically have an opening valve inside. Under normal circumstances, when the hydraulic pressure of the washing fluid reaches a certain value, the nozzle extends first, and then the opening valve opens, allowing the washing fluid to be sprayed out from the nozzle through the opening valve. However, in cold conditions, the nozzle tip of the telescopic nozzle is frozen, while the water inlet of the telescopic nozzle continues to supply washing fluid. Because conventional opening valves can only withstand a relatively low hydraulic pressure value, when the hydraulic pressure of the washing fluid reaches the opening value of the opening valve but the nozzle tip has not yet been pushed out, the washing fluid will spray out inside the vehicle, causing water leakage inside the vehicle and even damaging electrical circuits. Telescopic ice-breaking nozzles with this type of opening valve will also fail in cold conditions. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a double-sided self-locking piston that can withstand a large hydraulic value, and a telescopic ice-breaking nozzle with such a double-sided self-locking piston that can ensure that the nozzle end is pushed out first and then the washing liquid is sprayed out.

[0005] The technical solution adopted by this utility model to solve the above problems is: a double-sided self-locking piston, which is installed inside a telescopic ice-breaking nozzle, comprising:

[0006] A fitting section, wherein the fitting section is positioned in the direction of receiving hydraulic pressure from the washing fluid; the fitting section includes at least one self-locking ring; the self-locking ring deforms toward the mounting wall within the telescopic ice-breaking nozzle when subjected to hydraulic pressure from the washing fluid, so as to form a tight fit with the mounting wall; and

[0007] A loose fitting section, wherein the loose fitting section is disposed at one end of the tight fitting section; the loose fitting section is configured to loosely fit with the inner mounting wall of the telescopic ice-breaking nozzle.

[0008] Compared with the prior art, the double-sided self-locking piston of this utility model is installed inside the telescopic ice-breaking nozzle. It includes a tight-fitting section, which includes at least one self-locking ring. When the self-locking ring is subjected to the hydraulic pressure of the washing liquid, it deforms towards the mounting wall inside the telescopic ice-breaking nozzle. The greater the hydraulic pressure, the tighter the self-locking ring is squeezed, so that the double-sided self-locking piston can withstand a larger hydraulic pressure value. The loose-fitting section is set to loosely fit with the mounting wall inside the telescopic ice-breaking nozzle in order to reduce friction with the mounting wall. This makes it easier for the double-sided self-locking piston to be pushed by the hydraulic pressure of the washing liquid to open or close the telescopic ice-breaking nozzle, thereby supporting the function of the nozzle tip of the telescopic ice-breaking nozzle being pushed out first and then spraying the washing liquid.

[0009] According to one embodiment of the present invention, a through hole is further provided; the through hole includes a tight-fitting section through hole disposed in the tight-fitting section and a loose-fitting section through hole disposed in the loose-fitting section.

[0010] According to one embodiment of the present invention, the self-locking ring includes an outer self-locking ring and an inner self-locking ring; the inner self-locking ring is configured to deform toward the through hole when subjected to hydraulic pressure from the washing liquid; the outer self-locking ring is configured to deform in the opposite direction to the through hole when subjected to hydraulic pressure from the washing liquid.

[0011] According to one embodiment of the present invention, the loose section has a hook groove; the hook groove is configured to have an L-shaped cross-section.

[0012] According to one embodiment of the present invention, the loose section includes at least one reinforcing rib; the reinforcing rib is configured to connect from the inner wall of the hook groove to the outer wall.

[0013] A telescopic ice-breaking nozzle, including the aforementioned double-sided self-locking piston, further includes:

[0014] An outer sleeve assembly, wherein the outer sleeve assembly has a receiving cavity; the outer sleeve assembly includes a central column extending forward from the rear end of the receiving cavity; the front end of the central column has at least one communicating space through which washing liquid can pass;

[0015] A telescopic tube assembly, specifically the telescopic tube assembly comprising a telescopic tube; the telescopic tube having an internal transition flow channel; double-sided self-locking pistons disposed at the rear end of the telescopic tube; the front end of the central column passing through the through hole into the transition flow channel; and

[0016] A nozzle, wherein the nozzle is disposed at the front end of the telescopic tube.

[0017] According to one embodiment of the present invention, the telescopic tube assembly includes a baffle plate disposed at the rear end of the telescopic tube and a hook portion disposed at the rear end of the baffle plate; the baffle plate cooperates with the front end face of the loose section; the hook portion cooperates with the hook groove.

[0018] According to one embodiment of the present invention, the receiving cavity is separated into a rear liquid storage cavity by a double-sided self-locking piston; when the rear liquid storage cavity receives liquid supply, the water pressure pushes the telescopic tube assembly and the nozzle from the rear position to the front position through the double-sided self-locking piston, and causes the nozzle to be pushed out; when the double-sided self-locking piston is pushed to the front position by the water pressure, the rear liquid storage cavity is connected to the transition channel through the connecting space, and the nozzle sprays out washing liquid.

[0019] 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. Attached Figure Description

[0020] Figure 1 A perspective view of one side of a preferred embodiment of the double-sided self-locking piston according to the present utility model;

[0021] Figure 2 This is a perspective view of the other side of a double-sided self-locking piston according to a preferred embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of a double-sided self-locking piston according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a perspective view of the retracted state of the telescopic ice-breaking nozzle according to a preferred embodiment of the present invention;

[0024] Figure 5 This is a perspective view of the telescopic ice-breaking nozzle in the extended state according to a preferred embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional schematic diagram of the retracted state of the telescopic ice-breaking nozzle according to a preferred embodiment of the present invention.

[0026] Figure 7 This is a cross-sectional view of the telescopic ice-breaking nozzle in the extended state according to a 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 1-3 The diagram shows a double-sided self-locking piston, which is installed inside a telescopic ice-breaking nozzle. It includes a tight-fitting section 1 and a loose-fitting section 2. The tight-fitting section 1 is positioned in the direction of receiving hydraulic pressure from the washing liquid. The tight-fitting section 1 includes at least one self-locking ring 11. When the self-locking ring 11 is subjected to hydraulic pressure from the washing liquid, it deforms toward the mounting wall inside the telescopic ice-breaking nozzle to form a tight fit with the mounting wall. The loose-fitting section 2 is located at one end of the tight-fitting section 1. The loose-fitting section 2 is configured to loosely fit with the mounting wall inside the telescopic ice-breaking nozzle.

[0032] In practical use, the double-sided self-locking piston of this utility model is installed inside the telescopic ice-breaking nozzle. It includes a tight-fitting section 1, which includes at least one self-locking ring 11. When the self-locking ring 11 is subjected to the hydraulic pressure of the washing liquid, it deforms toward the mounting wall inside the telescopic ice-breaking nozzle. The greater the hydraulic pressure, the tighter the self-locking ring 11 is squeezed, so that the double-sided self-locking piston can withstand a larger hydraulic pressure value. The loose-fitting section 2 is set to be loosely fitted with the mounting wall inside the telescopic ice-breaking nozzle in order to reduce friction with the mounting wall. This makes it easier for the double-sided self-locking piston to be pushed by the hydraulic pressure of the washing liquid to open or close the telescopic ice-breaking nozzle, thereby providing support for the function of the nozzle head of the telescopic ice-breaking nozzle being pushed out first and then spraying the washing liquid.

[0033] Please continue reading. Figure 1-3 It further includes a through hole 3; the through hole 3 includes a tight section through hole 31 disposed in the tight section 1 and a loose section through hole 32 disposed in the loose section 2.

[0034] Please continue reading. Figure 1-3 The self-locking ring 11 includes an outer self-locking ring 111 and an inner self-locking ring 112; the inner self-locking ring 112 is configured to deform toward the through hole 3 when subjected to hydraulic pressure from the washing liquid; the outer self-locking ring 111 is configured to deform in the opposite direction to the through hole 3 when subjected to hydraulic pressure from the washing liquid.

[0035] Please continue reading. Figure 1-3 The loose section 2 has a hook groove 21; the hook groove 21 is configured to have an L-shaped cross section.

[0036] Please continue reading. Figure 1-3 The loose section 2 includes at least one reinforcing rib 22; the reinforcing rib 22 is configured to connect from the inner wall of the hook groove 21 to the outer wall.

[0037] Please see Figure 4-7 The telescopic ice-breaking nozzle shown includes the aforementioned double-sided self-locking piston, an outer tube assembly 4, a telescopic tube assembly 5, and a nozzle 6; wherein the outer tube assembly 4 has a receiving cavity 41; the outer tube assembly 4 includes a central column 42 extending forward from the rear end of the receiving cavity 41; the front end of the central column 42 has at least one communicating space 421 through which washing liquid can pass; the telescopic tube assembly 5 includes a telescopic tube 51; the telescopic tube 51 has a transition flow channel 511 inside; the double-sided self-locking piston is disposed at the rear end of the telescopic tube 51; the front end of the central column 42 passes through the through hole 3 and enters the transition flow channel 511; wherein the nozzle 6 is disposed at the front end of the telescopic tube 51.

[0038] Please continue reading. Figure 4-7 The telescopic tube assembly 5 includes a baffle 52 disposed at the rear end of the telescopic tube 51 and a hook 53 disposed at the rear end of the baffle 52; the baffle 52 cooperates with the front end face of the loose section 2; the hook 53 cooperates with the hook groove 21.

[0039] Please continue reading. Figure 4-7 The receiving cavity 41 is divided into a rear liquid storage cavity 411 by double-sided self-locking pistons. When the rear liquid storage cavity 411 receives liquid, the water pressure pushes the telescopic tube assembly 5 and the nozzle 6 from the rear position to the front position through the double-sided self-locking pistons, and causes the nozzle 6 to be pushed out. When the double-sided self-locking pistons are pushed to the front position by the water pressure, the rear liquid storage cavity 411 is connected to the transition flow channel 511 through the connecting space 421, and the nozzle 6 sprays out the washing liquid.

[0040] Please continue reading. Figure 4-7 The communicating space 421 is configured as at least one liquid guide channel opened at the front end of the central column 42.

[0041] In actual use, the outer sleeve assembly 4 has a receiving cavity 41 and a central column 42, and the central column 42 has a communicating space 421. The telescopic tube assembly 5 includes a telescopic tube 51, and the double-sided self-locking pistons separate the receiving cavity 41 into a rear liquid storage chamber 411. When the rear liquid storage chamber 411 receives liquid, the hydraulic pressure will squeeze the double-sided self-locking pistons, causing the double-sided self-locking pistons to undergo self-locking deformation towards the receiving cavity 41 and the central column 42 while being pushed from the rear position. This ensures that when the hydraulic pressure in the rear liquid storage chamber 411 is large, the double-sided self-locking pistons can withstand the pressure and be stably pushed forward, without moving along the central column 42. 2. The edge of the outer sleeve assembly 4 leaks liquid, which allows the hydraulic pressure to act as much as possible on the telescopic tube assembly 5, so that the telescopic tube assembly 5 can drive the nozzle 6 to be pushed out first; when the double self-locking pistons are pushed to the front position by water pressure, their position corresponds to the connecting space 421. At this time, the nozzle 6 and the cover must have been pushed out. The rear liquid storage chamber 411 and the transition flow channel 511 are then connected through the connecting space 421, which ultimately ensures that the washing liquid is sprayed out from the nozzle 6 after the nozzle 6 is pushed out, thereby avoiding water leakage inside the car body caused by the washing liquid being sprayed out before the nozzle 6 is extended, and also improving the cleaning effect.

[0042] For details, please continue reading. Figure 5 The enlarged view in the lower right corner shows that when the rear liquid storage chamber 411 receives liquid supply in direction A, the outer self-locking ring 111 deforms in direction B. The greater the hydraulic pressure, the tighter the outer self-locking ring 111 is pressed against the inner wall of the receiving chamber 41, i.e., against the inner mounting wall of the aforementioned telescopic ice-breaking nozzle, thus preventing the washing liquid from leaking towards the inner wall of the receiving chamber 41. The inner self-locking ring 112 deforms in direction C. The greater the hydraulic pressure, the tighter the inner self-locking ring 112 is pressed against the outer wall of the central column 42, thus preventing the washing liquid from leaking towards the outer wall of the central column 42. Through the design of simultaneous self-locking on both sides, the rear liquid storage chamber 411 can withstand a large hydraulic pressure without leakage, thus ensuring that the telescopic tube assembly 5 and the nozzle 6 can be stably pushed out first.

[0043] Furthermore, conventional pistons often form a seal by interfering with the outer wall of the opening valve and the inner wall of the rear liquid storage chamber 411. When the operating temperature is too high, conventional pistons may deform and shrink, causing the interfering fit to fail and resulting in leakage. However, the outer self-locking ring 111 and the inner self-locking ring 112 can be set with a larger dimensional margin. Even if the outer self-locking ring 111 and the inner self-locking ring 112 deform and shrink when the operating temperature is too high, the sealing performance can be guaranteed by the dimensional margin.

[0044] It is worth mentioning that the tight-fitting section 1 of the double-sided self-locking piston is set to face the rear liquid storage chamber 411. Since the tight-fitting section 1 has a double-sided self-locking function under hydraulic pressure, the friction generated by the tight-fitting section 1 is relatively large when the rear liquid storage chamber 411 receives liquid. At this time, if the loose-fitting section 2 is still set to be tightly attached to the inner wall of the receiving cavity 41 and the outer wall of the central column 42, the friction generated by the entire double-sided self-locking piston will be too large and difficult to push. Based on the above considerations, the loose-fitting section 2 is set to have a first gap with the inner wall of the receiving cavity 41 and a second gap with the outer wall of the central column 42 in order to reduce the friction generated by the loose-fitting section 2, so that the friction of the entire double-sided self-locking piston is appropriate when it is pushed forward, thereby satisfying the double-sided self-locking effect and facilitating pushing.

[0045] It is understandable that the loose section 2 is set to have an outer diameter smaller than the inner diameter of the receiving cavity 41 so that a first gap is formed between the loose section 2 and the inner wall of the receiving cavity 41, and the loose section through hole 32 is set to have a diameter larger than the outer diameter of the central column 42 so that a second gap is generated between the piston hole of the loose section 2 and the outer wall of the central column 42.

[0046] 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 double-sided self-locking piston, which is installed inside a telescopic ice-breaking nozzle, characterized in that, include: A fitting section (1), wherein the fitting section (1) is positioned in the direction of receiving hydraulic pressure from the washing liquid; the fitting section (1) includes at least one self-locking ring (11); the self-locking ring (11) deforms toward the mounting wall inside the telescopic ice-breaking nozzle when subjected to hydraulic pressure from the washing liquid, so as to form a tight fit with the mounting wall; and A loose section (2), wherein the loose section (2) is disposed at one end of the tight section (1); the loose section (2) is configured to loosely fit with the inner wall of the telescopic ice-breaking nozzle.

2. The double-sided self-locking piston according to claim 1, characterized in that: It further has a through hole (3); the through hole (3) includes a tight fitting section through hole (31) disposed in the tight fitting section (1) and a loose fitting section through hole (32) disposed in the loose fitting section (2).

3. The double-sided self-locking piston according to claim 2, characterized in that: The self-locking ring (11) includes an outer self-locking ring (111) and an inner self-locking ring (112); the inner self-locking ring (112) is configured to deform toward the through hole (3) when subjected to hydraulic pressure of the washing liquid; the outer self-locking ring (111) is configured to deform in the opposite direction to the through hole (3) when subjected to hydraulic pressure of the washing liquid.

4. The double-sided self-locking piston according to claim 1, characterized in that: The loose section (2) has a hook groove (21); the hook groove (21) is configured to have an L-shaped cross section.

5. The double-sided self-locking piston according to claim 4, characterized in that: The loose section (2) includes at least one reinforcing rib (22); the reinforcing rib (22) is configured to connect from the inner wall of the hook groove (21) to the outer wall.

6. A telescopic ice-breaking nozzle, comprising the double-sided self-locking piston as described in any one of claims 1-5, characterized in that, include: An outer sleeve assembly (4), wherein the outer sleeve assembly (4) has a receiving cavity (41); the outer sleeve assembly (4) includes a central column (42) extending forward from the rear end of the receiving cavity (41); the front end of the central column (42) has at least one communicating space (421) through which washing liquid can pass; A telescopic tube assembly (5), which includes a telescopic tube (51); the telescopic tube (51) has a transition channel (511) inside; a double-sided self-locking piston is disposed at the rear end of the telescopic tube (51); the front end of the central column (42) passes through the through hole (3) and enters the transition channel (511); and A nozzle (6), wherein the nozzle (6) is disposed at the front end of the telescopic tube (51).

7. The telescopic ice-breaking nozzle according to claim 6, characterized in that: The telescopic tube assembly (5) includes a baffle (52) disposed at the rear end of the telescopic tube (51) and a hook (53) disposed at the rear end of the baffle (52); the baffle (52) cooperates with the front end face of the loose section (2); the hook (53) cooperates with the hook groove (21).

8. The telescopic ice-breaking nozzle according to claim 6, characterized in that: The receiving cavity (41) is separated into a rear liquid storage cavity (411) by a double-sided self-locking piston; when the rear liquid storage cavity (411) receives liquid supply, the water pressure pushes the telescopic tube assembly (5) and the nozzle (6) from the rear position to move forward through the double-sided self-locking piston, and causes the nozzle (6) to be pushed out; when the double-sided self-locking piston is pushed to the front position by the water pressure, the rear liquid storage cavity (411) is connected to the transition channel (511) through the connecting space (421), and the nozzle (6) sprays out washing liquid.

9. The telescopic ice-breaking nozzle according to claim 6, characterized in that: The communicating space (421) is configured as at least one liquid guide channel opened at the front end of the central column (42).

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