Telescopic high-pressure nozzle and induction structure

Abstract

The invention provides a telescopic high-pressure nozzle and an induction structure, an outer sleeve assembly of the telescopic high-pressure nozzle is provided with a containing cavity and a center column, the center column is provided with a communication space, 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 a rear liquid storage cavity obtains supplied liquid, hydraulic pressure extrudes a double-side self-locking piston, so that the double-side self-locking piston generates self-locking deformation towards a containing cavity and a center column while being pushed from the rear position, and it is guaranteed that a telescopic pipe assembly firstly drives a spraying head to eject out; when the double-side self-locking piston is pushed to the front position by water pressure, the position of the double-side self-locking piston corresponds to the communicating space, the rear liquid storage cavity is communicated with the transition flow channel through the communicating space, and finally it is guaranteed that washing liquid is sprayed out of the spray head after the spray head and the decorative cover are ejected out, so that water leakage in a vehicle body caused by the fact that the washing liquid is sprayed out when the spray head does not stretch out is avoided; the cleaning effect is also improved; the induction structure comprises the telescopic high-pressure nozzle, and therefore a good cleaning effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nozzles, and in particular to a telescopic high-pressure nozzle and an induction structure. Background Art

[0002] Retractable high-pressure nozzles are widely used in transportation equipment because they can spray water at high pressure when extended and have a hidden effect when retracted. For example, in cars with sensing modules, the high-pressure water spray when the nozzle is extended can clean the surface of the sensing module to ensure the sensing function of the sensing module. When the nozzle is retracted, it can be hidden inside the car to make the car's appearance more beautiful.

[0003] The end of the existing telescopic high-pressure nozzle is generally provided with a decorative cover, which is integrated with the outer shell of the traffic equipment through the decorative cover to increase the aesthetics of the surface of the traffic equipment. However, in actual use, the decorative cover is often difficult to extend due to freezing and other reasons; when high-pressure cleaning fluid is introduced into the water inlet end of the telescopic high-pressure nozzle and the decorative cover cannot be opened, the sealing ring or valve responsible for opening the telescopic high-pressure nozzle will be pushed open, and the cleaning fluid will be sprayed inside the vehicle body, which may cause water leakage at the least and electrical short circuit inside the vehicle body or even spontaneous combustion of the vehicle at worst; and, since the existing retractable high-pressure nozzle has leaked before the decorative cover is pushed open, the cleaning fluid that should have been sprayed on the surface of the sensing module cannot be sprayed, and the high-pressure water spraying function of the telescopic high-pressure nozzle fails, which ultimately leads to abnormal sensing function of the sensing module. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a telescopic high-pressure nozzle which can spray washing liquid after the decorative cover is pushed open and has better cleaning function, and an induction structure with the telescopic high-pressure nozzle.

[0005] The technical solution adopted by the present invention to solve the above problems is: a telescopic high-pressure nozzle, comprising an outer sleeve assembly, a telescopic tube assembly telescopically arranged on the outer sleeve assembly, and a nozzle arranged at the front end of the telescopic tube assembly;

[0006] 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 (;

[0007] The telescopic tube assembly includes a telescopic tube and a double-sided self-locking piston arranged at the rear end of the telescopic tube; a transition flow channel is provided inside the telescopic tube; the front end of the center column passes through the double-sided self-locking piston and enters the transition flow channel;

[0008] The accommodating chamber is separated into a rear liquid storage chamber by the double-sided self-locking piston; when the rear liquid storage chamber is supplied with liquid, the water pressure pushes the telescopic tube assembly and the nozzle forward from the rear position through the double-sided self-locking piston, and pushes the nozzle out; when the double-sided self-locking piston is pushed to the front position by the water pressure, the rear liquid storage chamber is connected with the transition flow channel through the connecting space, and the nozzle sprays out the washing liquid.

[0009] Compared with the prior art, the outer sleeve assembly of the present invention has a accommodating chamber and a central column, and the central column has a connecting space, the telescopic tube assembly includes a telescopic tube and a double-sided self-locking piston, and the double-sided self-locking piston separates the accommodating chamber from the rear liquid storage chamber; when the rear liquid storage chamber obtains liquid supply, the hydraulic pressure will squeeze the double-sided self-locking piston, so that the double-sided self-locking piston will generate a self-locking deformation toward the accommodating chamber and the central column while being pushed from the rear position, so as to ensure that when the hydraulic pressure in the rear liquid storage chamber is large, the double-sided self-locking piston can be pushed forward stably without moving along the central column and the outer sleeve. The edge of the sleeve assembly leaks liquid, which makes the hydraulic pressure act on the telescopic tube assembly as much as possible to ensure that the telescopic tube assembly drives the nozzle to be ejected first; when the double-sided self-locking piston is pushed to the front position by the water pressure, its position corresponds to the connecting space. At this time, the nozzle and the decorative cover must have been ejected, and the rear liquid storage chamber and the transition flow channel are then connected through the connecting space, which ultimately ensures that the washing liquid is sprayed out from the nozzle after the nozzle and the decorative cover are ejected, thereby avoiding water leakage inside the car body caused by the washing liquid being sprayed out when the nozzle is not extended, and also improving the cleaning effect.

[0010] The present invention provides a telescopic high-pressure nozzle, wherein the double-sided self-locking piston includes a tight-fitting section near the rear end of the accommodating chamber; the tight-fitting section includes an outer self-locking ring and an inner self-locking ring; when the rear liquid storage chamber is supplied with liquid, the outer self-locking ring deforms toward the inner wall of the accommodating chamber, and the inner self-locking ring deforms toward the outer wall of the center column.

[0011] In a telescopic high-pressure nozzle of the present invention, the double-sided self-locking piston includes a loose section away from the rear end of the accommodating chamber; the loose section is configured to have a first gap with the inner wall of the accommodating chamber and a second gap with the outer wall of the central column;

[0012] The loose section is provided with a hook groove.

[0013] The present invention relates to a telescopic high-pressure nozzle, wherein the outer sleeve assembly comprises an outer sleeve body, a sleeve cover provided at the front end of the outer sleeve body, and a liquid inlet pipe provided at the rear end of the outer sleeve body;

[0014] The accommodating cavity is provided between the outer sleeve body and the sleeve cover;

[0015] The central column includes a fixing portion arranged at the rear end of the outer sleeve body; the fixing portion has at least one liquid inlet hole; the liquid inlet pipe supplies liquid to the rear liquid storage cavity through the liquid inlet hole.

[0016] The present invention provides a telescopic high-pressure nozzle, wherein the telescopic tube assembly includes a baffle arranged at the rear end of the telescopic tube and a hook portion arranged at the rear end of the baffle; the baffle cooperates with the front end surface of the loose section; the hook portion cooperates with the hook groove; a plurality of reinforcing ribs are provided in the hook groove, and the reinforcing ribs are arranged to connect from the inner wall to the outer wall of the hook groove.

[0017] The telescopic high-pressure nozzle of the present invention further comprises a reset structure;

[0018] The sleeve cover includes a cover body, a plurality of hooks distributed along the circumference of the cover body, and a connector provided at the rear end of the cover body; the outer sleeve body includes a fixing plate provided at the front end; the fixing plate has a plurality of slots; when the connector is inserted into the outer sleeve body, the hooks are inserted into the slots;

[0019] The cover body includes a front baffle; the reset structure is sleeved on the outside of the telescopic tube, and the rear end of the reset structure abuts against the baffle, and the front end abuts against the front baffle through the connecting portion;

[0020] The telescopic tube includes a limit plate; the limit plate is configured to cooperate with the front baffle for limiting position; when the limit plate contacts the front baffle, the double-sided self-locking piston is in the front position.

[0021] In the telescopic high-pressure nozzle of the present invention, the communication space is configured as at least one liquid guide groove opened at the front end of the central column.

[0022] The present invention relates to a telescopic high-pressure nozzle, wherein the nozzle comprises a nozzle connecting section, a spraying section arranged at the front end of the nozzle connecting section, and a sealing ring arranged at the nozzle connecting section;

[0023] The nozzle connecting section has a mounting cavity; the front end of the telescopic tube is inserted into the mounting cavity and abuts against the sealing ring;

[0024] The ejection section comprises a pre-pressurization chamber communicating with the installation chamber, a secondary pressurization chamber communicating with the pre-pressurization chamber, and a water outlet channel communicating with the secondary pressurization chamber.

[0025] The telescopic high-pressure nozzle of the present invention further includes a heating structure; the heating structure includes at least one heating element; the outer sleeve assembly further includes a heating shell arranged on the outside of the rear liquid storage chamber; the heating element is arranged in the heating shell to heat the washing liquid in the rear liquid storage chamber.

[0026] An induction structure, comprising the aforementioned telescopic high-pressure nozzle, further comprising a mounting cover plate and an induction portion disposed within the mounting cover plate;

[0027] The mounting cover includes a sensing portion accommodating frame, two wing plates arranged on both sides of the sensing portion accommodating frame, and a nozzle mounting plate arranged at the upper end or the lower end of the sensing portion accommodating frame; the sensing portion includes a sensing surface;

[0028] The sensing portion is arranged in the sensing portion accommodating frame, and the sensing surface extends out of the sensing portion accommodating frame; the fixing plate is arranged on the nozzle mounting plate; when the nozzle is extended, the washing liquid sprayed from the water outlet channel is directed toward the sensing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional schematic diagram of a retractable high-pressure nozzle in a retracted state according to a preferred embodiment of the present invention;

[0030] Figure 2 is a cross-sectional schematic diagram of a retractable high-pressure nozzle in a retracted state according to a preferred embodiment of the present invention;

[0031] Figure 3 is a three-dimensional schematic diagram of a telescopic high-pressure nozzle in an extended state according to a preferred embodiment of the present invention;

[0032] Figure 4 is a cross-sectional schematic diagram of a telescopic high-pressure nozzle in an extended state according to a preferred embodiment of the present invention;

[0033] Figure 5 is a cross-sectional schematic diagram of a telescopic high-pressure nozzle in an extended state according to another preferred embodiment of the present invention;

[0034] Figure 6 is a cross-sectional schematic diagram of a telescopic high-pressure nozzle in an extended state according to another preferred embodiment of the present invention;

[0035] Figure 7 Schematic diagram of a double-sided self-locking piston according to a preferred embodiment of the present invention;

[0036] Figure 8 is a cross-sectional schematic diagram of an outer sleeve assembly according to a preferred embodiment of the present invention;

[0037] Figure 9 is a perspective schematic diagram of a double-sided self-locking piston and telescopic tube assembly according to another preferred embodiment of the present invention;

[0038] Figure 10 A schematic perspective diagram of a sensing structure according to a preferred embodiment of the present invention from a side perspective;

[0039] Figure 11is a three-dimensional schematic diagram from another side perspective of a sensing structure according to a preferred embodiment of the present invention;

[0040] Figure 12 FIG. 1 is a side view of a sensing structure according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0041] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and their variations herein is intended to cover the items and their equivalents set forth below and additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variations are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings.

[0042] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0043] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

[0044] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0045] See also Figure 1-9The telescopic high-pressure nozzle shown in the figure comprises an outer sleeve assembly 1, a telescopic tube assembly 2 which is telescopically arranged on the outer sleeve assembly 1, and a nozzle 3 arranged at the front end of the telescopic tube assembly 2; the outer sleeve assembly 1 has a receiving chamber 11; the outer sleeve assembly 1 includes a central column 12 extending forward from the rear end of the receiving chamber 11; the front end of the central column 12 has at least one connecting space 121 for washing liquid to pass through; the telescopic tube assembly 2 includes a telescopic tube 21 and a double-sided self-locking piston 22 arranged at the rear end of the telescopic tube 21; the telescopic tube 21 has a central column 12 extending forward from the rear end of the receiving chamber 11; the central column 12 has at least one connecting space 121 for washing liquid to pass through; the telescopic tube assembly 2 includes a telescopic tube 21 and a double-sided self-locking piston 22 arranged at the rear end of the telescopic tube 21; The front end of the central column 12 passes through the double-sided self-locking piston 22 and enters the transition flow channel 211; the accommodating chamber 11 is separated into a rear liquid storage chamber 111 by the double-sided self-locking piston 22; when the rear liquid storage chamber 111 is supplied with liquid, the water pressure pushes the telescopic tube assembly 2 and the nozzle 3 from the rear position forward through the double-sided self-locking piston 22, and pushes the nozzle 3 out; when the double-sided self-locking piston 22 is pushed to the front position by the water pressure, the rear liquid storage chamber 111 is connected with the transition flow channel 211 through the connecting space 121, and the nozzle 3 sprays out the washing liquid.

[0046] In actual use, the outer sleeve assembly 1 of the present invention has a accommodating chamber 11 and a central column 12, and the central column 12 has a connecting space 121. The telescopic tube assembly 2 includes a telescopic tube 21 and a double-sided self-locking piston 22, and the double-sided self-locking piston 22 separates the accommodating chamber 11 from the rear liquid storage chamber 111; when the rear liquid storage chamber 111 is supplied with liquid, the hydraulic pressure will squeeze the double-sided self-locking piston 22, so that the double-sided self-locking piston 22 is pushed from the rear position and generates a self-locking deformation toward the accommodating chamber 11 and the central column 12, so as to ensure that when the hydraulic pressure in the rear liquid storage chamber 111 is large, the double-sided self-locking piston 22 can be stably pushed forward without Liquid leaks along the edge of the center column 12 and the outer sleeve assembly 1, so that the hydraulic pressure acts on the telescopic tube assembly 2 as much as possible to ensure that the telescopic tube assembly 2 drives the spray head 3 to be ejected first; when the double-sided self-locking piston 22 is pushed to the front position by the water pressure, its position corresponds to the connecting space 121. At this time, the spray head 3 and the decorative cover must have been ejected, and the rear liquid storage chamber 111 and the transition flow channel 211 are then connected through the connecting space 121, ultimately ensuring that the washing liquid is sprayed out from the spray head 3 after the spray head 3 and the decorative cover are ejected, thereby avoiding water leakage inside the car body caused by the washing liquid being sprayed out when the spray head 3 is not extended, and also improving the cleaning effect.

[0047] It is worth mentioning that the situation in which the decorative cover and the nozzle 3 are difficult to push open is caused not only by freezing, but also by accumulation of dust and debris, as well as human factors, etc. The use of the aforementioned telescopic high-pressure nozzle can make the nozzle 3 and the decorative cover be pushed out first, and then the nozzle 3 sprays out the washing liquid, which has solved other problems except freezing.

[0048] Please continue reading Figure 2 、 Figure 5, wherein the double-sided self-locking piston 22 includes a tight-fitting section 221 close to the rear end of the accommodating chamber 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 chamber 111 is supplied with liquid, the outer self-locking ring 2211 is deformed toward the inner wall of the accommodating chamber 11, and the inner self-locking ring 2212 is deformed toward the outer wall of the center column 12.

[0049] It is worth noting that the double-sided self-locking piston 22 has a piston hole for the center column 12 to pass through, the inner self-locking ring 2212 is arranged on the inner edge of the piston hole, and the outer self-locking ring 2211 is arranged on the outer edge of the tight-fitting section 221.

[0050] For more details, please see Figure 2 In the enlarged view in the lower right corner, when the rear liquid storage chamber 111 receives liquid supply in direction A, the outer self-locking ring 2211 is deformed in direction B, and the greater the hydraulic pressure, the tighter the outer self-locking ring 2211 is squeezed against the inner wall of the accommodating chamber 11, thereby preventing the washing liquid from leaking toward the inner wall of the accommodating chamber 11; the inner self-locking ring 2212 is deformed in direction C, and the greater the hydraulic pressure, the tighter the inner self-locking ring 2212 is squeezed against the outer wall of the center column 12, thereby preventing the washing liquid from leaking toward the outer wall of the center column 12; through the design of simultaneous self-locking on both sides, the rear liquid storage chamber 111 can withstand a larger hydraulic pressure without leakage, thereby ensuring that the telescopic tube assembly 2 and the nozzle 3 can be stably ejected first.

[0051] In addition, conventional pistons often form a seal by an interference fit between 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 interference fit to fail, thereby causing leakage; while the outer self-locking ring 2211 and the inner self-locking ring 2212 can be set with a larger size margin. Even if the outer self-locking ring 2211 and the inner self-locking ring 2212 are deformed and shrunk when the operating temperature is too high, the sealing performance can be guaranteed by reserving the size margin.

[0052] Please continue reading Figure 2 、 Figure 5 The double-sided self-locking piston 22 includes a loose section 222 away from the rear end of the accommodating chamber 11; the loose section 222 is configured to have a first gap with the inner wall of the accommodating chamber 11 and a second gap with the outer wall of the center column 12; and a hook groove 2221 is provided in the loose section 222.

[0053] It is worth mentioning that the tight-fitting section 221 of the double-sided self-locking piston 22 is set to face the rear liquid storage chamber 111. Since the tight-fitting section 221 has a double-sided self-locking effect under the action of hydraulic pressure, when the rear liquid storage chamber 111 is supplied with liquid, the friction force generated by the tight-fitting section 221 is relatively large. At this time, if the loose-fitting section 222 is still set to be close to the inner wall of the accommodating chamber 11 and the outer wall of the center column 12, the friction force generated by the entire double-sided self-locking piston 22 will be too large and difficult to push; based on the above considerations, the loose-fitting section 222 is set to have a first gap with the inner wall of the accommodating chamber 11 and a second gap with the outer wall of the center column 12, so as to reduce the friction force generated by the loose-fitting section 222, and thereby make the friction force of the entire double-sided self-locking piston 22 appropriate when being pushed forward, thereby satisfying the double-sided self-locking effect and being easy to push.

[0054] It can be understood that the loose section 222 is set to have an outer diameter smaller than the inner diameter of the accommodating chamber 11, so that a first gap is formed between the loose section 222 and the inner wall of the accommodating chamber 11, and the piston hole of the loose section 222 is set to have a diameter larger than the outer diameter of the center column 12, so that a second gap is generated between the piston hole of the loose section 222 and the outer wall of the center column 12.

[0055] Furthermore, a hook groove 2221 is defined in the loose section 222 , and the hook groove 2221 is configured to have an L-shaped cross section so as to fit the telescopic tube 21 .

[0056] Please continue reading Figure 2 、 Figure 3 、 Figure 7 The outer sleeve assembly 1 includes an outer sleeve body 13, a sleeve cover 14 arranged at the front end of the outer sleeve body 13, and a liquid inlet pipe 15 arranged at the rear end of the outer sleeve body 13; the liquid inlet pipe 15 is used to connect to an external liquid storage tank to provide cleaning liquid to the telescopic high-pressure nozzle; the accommodating chamber 11 is arranged between the outer sleeve body 13 and the sleeve cover 14; the central column 12 includes a fixing portion 122 arranged at the rear end of the outer sleeve body 13; the fixing portion 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.

[0057] Please continue reading Figure 4 The telescopic tube assembly 2 includes a baffle 23 provided at the rear end of the telescopic tube 21 and a hook portion 24 provided at the rear end of the baffle 23 ; the baffle 23 cooperates with the front end surface of the loose section 222 ; the hook portion 24 cooperates with the hook groove 2221 .

[0058] Furthermore, the hook portion 24 is configured to have an L-shaped cross-section so as to cooperate with the hook groove 2221 having an L-shaped cross-section to prevent the hook portion 24 from loosening from the double-sided self-locking piston 22; when the telescopic high-pressure nozzle needs to be extended, the front end surface of the loose section 222 pushes the baffle 23, thereby pushing the entire telescopic tube assembly 2 and the nozzle 3 forward; when the telescopic high-pressure nozzle needs to be retracted, the baffle 23 pushes the front end surface of the loose section 222, thereby resetting the entire telescopic tube assembly 2 and the nozzle 3.

[0059] Please continue reading Figure 9 In other embodiments, the hook groove 2221 has a plurality of reinforcing ribs, which are arranged to connect from the inner wall of the hook groove 2221 to the outer wall so as to pull the outer wall of the hook groove 2221 to prevent the loose section 222 from deforming toward the inner wall of the accommodating cavity 11 under extreme conditions such as temperature changes, uneven force or component wear, causing the first gap to decrease or disappear, thereby ensuring the role of the loose section 222 in reducing friction; the corresponding hook portion 24 is arranged to have a plurality of empty slots so as to avoid the plurality of reinforcing ribs in the hook groove 2221, so that the hook portion 24 can be smoothly inserted into the hook groove 2221 to form a fit.

[0060] Please continue reading Figure 2 、 Figure 4 , which further includes a reset structure 4;

[0061] The sleeve cover 14 includes a cover body 141, a plurality of hooks 142 distributed along the circumference of the cover body 141, and a connector 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 connector 143 is inserted into the outer sleeve body 13, the hooks 142 are inserted into the slots 1311.

[0062] The cover 141 includes a front baffle 1411 ; the reset structure 4 is sleeved on the outside of the telescopic tube 21 , with the rear end of the reset structure 4 abutting against the baffle 23 , and the front end thereof abutting against the front baffle 1411 through the connecting portion 143 ;

[0063] The telescopic tube 21 includes a limit plate 212 ; the limit plate 212 is configured to cooperate with the front baffle 1411 to limit position; when the limit plate 212 contacts the front baffle 1411 , the double-sided self-locking piston 22 is in the front position.

[0064] Specifically, when the sleeve cover 14 is subjected to a forward force, the hook 142 and the slot 1311 cooperate to prevent dislocation; when the sleeve cover 14 is subjected to a backward force, the cover body 141 and the fixed plate 131 cooperate to limit the position; the reset structure 4 is arranged between the baffle 23 and the front baffle 1411. When the telescopic high-pressure nozzle needs to be extended, the thrust generated by the hydraulic pressure needs to overcome the friction generated by the double-sided self-locking piston 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 conducive to the smooth extension of the telescopic high-pressure nozzle; when the telescopic high-pressure nozzle needs to be retracted, the compressed reset structure 4 is expanded so that the telescopic tube assembly 2 and the nozzle 3 are reset through the baffle 23. Therefore, reducing the friction generated by the loose section 222 during the extension process is conducive to the smooth retraction of the telescopic high-pressure nozzle.

[0065] In addition, by setting the limit plate 212, when the telescopic tube 21 is pushed to the front position, the limit plate 212 contacts the front baffle 1411. In this position, the position of the double-sided self-locking piston 22 corresponds exactly to the connecting space 121, and the washing liquid can be ejected along the premise that the nozzle 3 must be ejected. Figure 4 The ejection path is shown by the arrow.

[0066] It is worth mentioning that under this setting, the double-sided self-locking piston 22 plays the role of a piston sealing ring in the rear position and during the movement from the rear position to the front position, and its function is to ensure that the washing liquid cannot be sprayed out before the nozzle 3 is completely pushed out; when the double-sided self-locking piston 22 is in the front position, it plays the role of an opening valve, so that the connecting space 121 can be connected to the rear liquid storage chamber 111 and the transition channel 211; the double-sided self-locking piston 22 integrates the functions of the piston sealing ring and the opening valve into one, saving material costs and the axial length of the entire telescopic high-pressure nozzle.

[0067] Please continue reading Figure 4 , wherein the communicating space 121 is configured as at least one liquid guiding groove opened at the front end of the center column 12, and the liquid guiding groove has a certain length, and the length is greater than the axial dimension of the double-sided self-locking piston 22, so as to ensure that when the double-sided self-locking piston 22 is in the front position, the communicating space 121 can connect the rear liquid storage chamber 111 and the transition channel 211 and the double-sided self-locking piston 22 does not fall out from the front end of the center column 12.

[0068] Please see further Figure 4In this embodiment, the aforementioned liquid guide grooves are provided in plurality and are arranged circumferentially along the front end of the central column 12. Under this arrangement, firstly, the flow rate of the multiple streams of washing liquid entering the transition channel 211 from the rear liquid storage chamber 111 through the connecting space 121 is made uniform; secondly, the liquid guide grooves are formed by hollowing out part of the material while the outer diameter of the front end of the central column 12 remains unchanged, so that when the double-sided self-locking piston 22 is in the front position, the inner self-locking ring 2212 is still in a state supported by the outer wall of the central column 12, and because the double-sided self-locking piston 22 does not fall out from the front end of the central column 12 when in the front position, the inner self-locking ring 2212 is not easy to fold during the forward and backward movement of the double-sided self-locking piston 22; if the inner self-locking ring 2212 folds, water leakage is likely to occur.

[0069] Please continue reading Figure 5 In other embodiments, the connecting space 121 is configured to be formed by a tapered portion at the front end of the center column 12. Since the size of the tapered portion 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 is disengaged from the tapered portion, so that the rear liquid storage chamber 111 is connected to the transition channel 211.

[0070] Please continue reading Figure 6 In other embodiments, the connecting space 121 is configured to be formed by the misalignment of the center column 12 and the double-sided self-locking pistons 22, that is, when the center column 12 is configured to be shorter, the double-sided self-locking pistons 22 are disengaged from the front end of the center column 12 when in the front position, so that the rear liquid storage chamber 111 is connected to the transition channel 211.

[0071] It is understandable that the communication space 121 can be implemented in one or more of the aforementioned liquid guide groove manner, tapered portion manner and staggered manner.

[0072] Please continue reading Figure 2 、 Figure 4 , wherein the nozzle 3 includes a nozzle connecting section 31, a spraying section 32 arranged at the front end of the nozzle connecting section 31 and a sealing ring 33 arranged at the nozzle connecting section 31, the sealing ring 33 is used to prevent the washing liquid from leaking from this position and causing the spraying pressure to decrease; 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 spraying section 32 has a pre-pressurization chamber 321 communicating with the installation cavity 311, a secondary pressurization chamber 322 communicating with the pre-pressurization chamber 321 and a water outlet channel 323 communicating with the secondary pressurization chamber 322; through the provision of the pre-pressurization chamber 321, the washing liquid from the transition flow channel 211 can enter with less energy loss and give the washing liquid a first pressurization; through the provision of the secondary pressurization chamber 322, the washing liquid is given a second pressurization; through the provision of the water outlet channel 323, the spraying direction of the washing liquid is adjusted, and the washing liquid is sprayed out in a fan shape.

[0073] Also, please continue reading Figure 9 The front end of the telescopic tube 21 is also provided with a plurality of nozzle buckling parts, and the nozzle connecting section 31 has a plurality of nozzle buckling grooves. The nozzle buckling parts cooperate with the nozzle buckling grooves to enable the nozzle 3 to work stably under high hydraulic pressure.

[0074] Please continue reading Figure 2 、 Figure 4 , which further includes a heating structure 5; the heating structure 5 includes at least one heating element 51; the outer sleeve assembly 1 further includes a heating shell 16 arranged on the outside of the rear liquid storage chamber 111; the heating element 51 is arranged in the heating shell 16 to heat the washing liquid in the rear liquid storage chamber 111.

[0075] Specifically, the heating structure 5 of the conventional telescopic high-pressure nozzle is often set at the position of the nozzle 3. However, since the nozzle 3 has a high flow rate when spraying the washing liquid, the washing liquid is sprayed out before it has time to be heated, so the heating effect is poor. In addition, the position setting of this heating structure 5 also has problems such as the nozzle 3 structure being too large, unsightly, and repeatedly stretching and pulling the wires of the heating structure 5. When the rear liquid storage chamber 111 is supplied with liquid, the washing liquid in the rear liquid storage chamber 111 overcomes the friction generated by the double-sided self-locking piston 22 and the elastic force generated by the reset structure 4. The increasing speed is relatively slow, which gives the heating structure 5 arranged on the outside of the rear liquid storage chamber 111 a longer heating time, so that the washing liquid obtains a higher temperature; when the hotter 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 in the water outlet channel 323, but also has a stronger decontamination effect, so that the cleaning function is better; at the same time, the position setting of the heating structure 5 also solves the problems of the nozzle 3 structure being too large, unsightly, and repeatedly stretching and pulling the wires of the heating structure 5.

[0076] It is worth mentioning that the heating housing 16 is arranged in a circular shape with an opening at the rear. The installation of the heating element 51 includes the following steps:

[0077] Step 1: Place the outer sleeve assembly 1 vertically so that the opening of the heating shell 16 faces upward;

[0078] Step 2: Bend the pins of the plurality of heating elements 51 and evenly hang them at the opening of the heating housing 16 so that the bodies of the heating elements 51 are located inside the heating housing 16 and the pins of the heating elements 51 are located outside the heating housing 16;

[0079] Step 3: Pour thermal conductive glue into the heating housing 16;

[0080] Step 4: Heat the outer sleeve assembly 1 to solidify the thermal conductive glue in the heating shell 16 .

[0081] Please continue reading Figure 10-12 The induction structure shown includes the aforementioned telescopic high-pressure nozzle, a mounting cover plate 6 and a sensing portion 7 disposed in the mounting cover plate 6 .

[0082] During actual use, the mounting cover 6 is connected to the traffic equipment, and the sensing part 7 is installed inside the mounting cover 6 to obtain fixation, so that the sensing part 7 can play a sensing role; the sensing structure includes the aforementioned telescopic high-pressure nozzle. When the nozzle 3 pushes open the decorative cover and extends, it can spray out the washing liquid and clean the sensing part 7.

[0083] Furthermore, the sensing unit 7 includes at least one of a laser radar, a sensor, and a camera.

[0084] Please continue reading Figure 10-12 The mounting cover 6 includes a sensing portion accommodating frame 61, two wing plates 62 disposed on both sides of the sensing portion accommodating frame 61, and a nozzle mounting plate 63 disposed at the upper end or the lower end of the sensing portion accommodating frame 61; the sensing portion 7 includes a sensing surface 71;

[0085] The sensing portion 7 is arranged in the sensing portion accommodating frame 61, and the sensing surface 71 passes through the sensing portion accommodating frame 61; the fixing plate 131 is arranged on the nozzle mounting plate 63; when the nozzle 3 is extended, the washing liquid sprayed from the water outlet channel 323 is directed toward the sensing surface 71.

[0086] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A telescopic high-pressure nozzle, characterized in that: It comprises an outer sleeve assembly (1), a telescopic tube assembly (2) telescopically arranged on the outer sleeve assembly (1), and a nozzle (3) arranged at the front end of the telescopic tube assembly (2); The outer sleeve assembly (1) has a receiving cavity (11); the outer sleeve assembly (1) includes a central column (12) extending forward from the rear end of the receiving cavity (11); the front end of the central column (12) has at least one communicating space (121) for washing liquid to pass through; The telescopic tube assembly (2) comprises a telescopic tube (21) and a double-sided self-locking piston (22) arranged at the rear end of the telescopic tube (21); a transition flow channel (211) is provided inside the telescopic tube (21); the front end of the center column (12) passes through the double-sided self-locking piston (22) and enters the transition flow channel (211); The accommodating chamber (11) is separated into a rear liquid storage chamber (111) by the double-sided self-locking piston (22); when the rear liquid storage chamber (111) is supplied with liquid, the water pressure pushes the telescopic tube assembly (2) and the spray head (3) from the rear position forward through the double-sided self-locking piston (22), and pushes the spray head (3) out; when the double-sided self-locking piston (22) is pushed to the front position by the water pressure, the rear liquid storage chamber (111) is connected to the transition flow channel (211) through the connecting space (121), and the spray head (3) sprays out the washing liquid.

2. The telescopic high-pressure nozzle according to claim 1, characterized in that: The double-sided self-locking piston (22) comprises a tight-fitting section (221) close to the rear end of the accommodating chamber (11); the tight-fitting section (221) comprises an outer self-locking ring (2211) and an inner self-locking ring (2212); when the rear liquid storage chamber (111) is supplied with liquid, the outer self-locking ring (2211) is deformed toward the inner wall of the accommodating chamber (11), and the inner self-locking ring (2212) is deformed toward the outer wall of the central column (12).

3. The telescopic high-pressure nozzle according to claim 2, characterized in that: The double-sided self-locking piston (22) comprises a loose section (222) away from the rear end of the accommodating chamber (11); the loose section (222) is configured to have a first gap with the inner wall of the accommodating chamber (11) and a second gap with the outer wall of the central column (12); The loose section (222) has a hook groove (2221) therein.

4. The telescopic high-pressure nozzle according to claim 3, characterized in that: The outer sleeve assembly (1) comprises an outer sleeve body (13), a sleeve cover (14) arranged at the front end of the outer sleeve body (13), and a liquid inlet pipe (15) arranged at the rear end of the outer sleeve body (13); The accommodating cavity (11) is provided between the outer sleeve body (13) and the sleeve cover (14); The central column (12) includes a fixing portion (122) arranged at the rear end of the outer sleeve body (13); the fixing portion (122) has at least one liquid inlet hole (1221); and the liquid inlet pipe (15) supplies liquid to the rear liquid storage chamber (111) through the liquid inlet hole (1221).

5. The telescopic high-pressure nozzle according to claim 4, characterized in that: The telescopic tube assembly (2) comprises a baffle (23) provided at the rear end of the telescopic tube (21) and a hook portion (24) provided at the rear end of the baffle (23); the baffle (23) cooperates with the front end surface of the loose section (222); the hook portion (24) cooperates with the hook groove (2221); A plurality of reinforcing ribs are provided in the hook groove (2221), and the reinforcing ribs are arranged to connect from the inner wall to the outer wall of the hook groove (2221).

6. The telescopic high-pressure nozzle according to claim 5, characterized in that: further comprising a reset structure (4); The sleeve cover (14) comprises a cover body (141), a plurality of hooks (142) distributed along the circumference of the cover body (141), and a connector (143) arranged at the rear end of the cover body (141); the outer sleeve body (13) comprises a fixing plate (131) arranged at the front end; the fixing plate (131) has a plurality of slots (1311); when the connector (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) through the connecting portion (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 piston (22) is in a forward position.

7. The telescopic high-pressure nozzle according to claim 1, characterized in that: The communication space (121) is configured as at least one liquid-conducting groove opened at the front end of the central column (12).

8. The telescopic high-pressure nozzle according to claim 1, characterized in that: The nozzle (3) comprises a nozzle connecting section (31), a spraying section (32) arranged at the front end of the nozzle connecting section (31), and a sealing ring (33) arranged at the side of the nozzle connecting section (31); The nozzle connecting section (31) has a mounting cavity (311); the front end of the telescopic tube (21) is inserted into the mounting cavity (311) and abuts against the sealing ring (33); The ejection section (32) comprises a pre-pressurization chamber (321) communicating with the installation chamber (311), a secondary pressurization chamber (322) communicating with the pre-pressurization chamber (321), and a water outlet channel (323) communicating with the secondary pressurization chamber (322).

9. The telescopic high-pressure nozzle according to claim 1, characterized in that: It further comprises a heating structure (5); the heating structure (5) comprises at least one heating element (51); the outer sleeve assembly (1) further comprises a heating shell (16) arranged outside the rear liquid storage chamber (111); the heating element (51) is arranged in the heating shell (16) to heat the washing liquid in the rear liquid storage chamber (111).

10. An induction structure comprising the telescopic high-pressure nozzle according to any one of claims 1 to 9, characterized in that: It comprises a mounting cover plate (6) and a sensing portion (7) disposed in the mounting cover plate (6); The mounting cover plate (6) comprises a sensing portion accommodating frame (61), two wing plates (62) arranged on both sides of the sensing portion accommodating frame (61), and a nozzle mounting plate (63) arranged at the upper end or the lower end of the sensing portion accommodating frame (61); the sensing portion (7) comprises a sensing surface (71); The sensing portion (7) is arranged in the sensing portion accommodating frame (61), and the sensing surface (71) extends out of the sensing portion accommodating frame (61); the fixing plate (131) is arranged on the nozzle mounting plate (63); when the nozzle (3) is extended, the washing liquid sprayed from the water outlet channel (323) is directed toward the sensing surface (71).

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