A spray boom device

Abstract

A spray boom assembly includes a spray boom body and a sliding member slidably disposed therein, as well as a first limiting member and a second driving mechanism. The second driving mechanism drives the first limiting member to switch to a first limited position or a first reset position. When in the first limited position, the first limiting member abuts against the sliding member, and the sliding member slides relative to the spray boom body to abut against the nozzle, causing the nozzle to detach from the spray boom body. When in the first reset position, the first limiting member releases its restriction on the sliding member, allowing the extended spray boom assembly to retract. The first limiting member, controlled by the second driving mechanism, can selectively limit the sliding member at specific times, thereby converting the reverse movement of the spray boom body into a pushing force on the nozzle. This solves the problems of inconvenience caused by manual nozzle disassembly, easy water splashing, and easy retraction of the spray boom during installation in the prior art, achieving the technical effects of improving cleaning convenience, enhancing hygiene, and improving user experience.

Description

Technical Field

[0001] This utility model relates to the technical field of intelligent toilet spray bar devices, and in particular to a spray bar device with an automatically detachable nozzle. Background Technology

[0002] As an indispensable key component of a smart toilet, the nozzle needs to be disassembled and thoroughly cleaned regularly for hygiene and health reasons during long-term use. Currently, the conventional nozzle disassembly operation usually relies on manual operation. However, after long-term use, scale, stains, and other residues easily accumulate inside and on the surface of the nozzle. Users often have to use considerable force to forcibly pull it out, which is not only laborious but also prone to causing residual water inside the nozzle to be violently flung out, wetting the surrounding environment or the user's clothing, resulting in a poor user experience. Utility Model Content

[0003] This utility model provides a spray bar device to solve the problem of inconvenient nozzle disassembly in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A spray boom device includes a fixed base, a spray boom assembly, and a first drive mechanism. The spray boom assembly is slidably connected to the fixed base and is driven by the first drive mechanism to extend or retract relative to the fixed base. The spray boom assembly includes a spray boom body and a sliding member slidably disposed within the spray boom body. The spray boom body is connected to a detachable nozzle. The device also includes:

[0006] The first limiting member and the second driving mechanism drive the first limiting member to switch to the first limiting position or the first reset position after the spray bar assembly extends out of the fixed seat.

[0007] When the spray bar assembly retracts and the first limiting member is in the first limiting position, the first limiting member abuts against the sliding member, causing the sliding member to slide relative to the spray bar body to abut against the nozzle, so that the nozzle disengages from the spray bar body; when the spray bar assembly retracts and the first limiting member is in the first reset position, the first limiting member cancels the limiting of the sliding member, and the spray bar body drives the sliding member to retract.

[0008] Furthermore, one of the sliding member and the main body of the spray bar has a limiting protrusion, and the other has a limiting groove. The limiting protrusion is slidably connected to the limiting groove, and the limiting groove restricts the movement stroke of the sliding member relative to the main body of the spray bar.

[0009] Furthermore, the first limiting member is provided with a first limiting position and a second limiting position, which are respectively used to abut against the two sides of the sliding member away from the nozzle.

[0010] Furthermore, the fixed base is provided with a main slide groove for sliding connection of the spray bar assembly. The main slide groove is provided with a clearance hole for the first limiting position and the second limiting position to enter and exit the main slide groove, so as to abut against the sliding member or cancel the limiting of the sliding member.

[0011] Furthermore, it also includes a second limiting member, which is linked to the first limiting member. The first limiting member drives the second limiting member to switch to the second limiting position or the second reset position after the spray bar assembly extends out of the fixed seat.

[0012] When in the second limiting position, the second limiting member abuts against the main body of the spray bar, restricting the retraction of the main body of the spray bar when the nozzle is installed; when in the second reset position, the second limiting member cancels the restriction on the main body of the spray bar, causing the extended spray bar assembly to retract.

[0013] Furthermore, the main slide is provided with a clearance track extending along the moving direction of the spray bar body, and the spray bar body is provided with a limiting part that passes through and moves along the clearance track. The second limiting member restricts or cancels the limiting part.

[0014] Furthermore, the second drive mechanism can also drive the first limiting member to switch to a first initial position between the first limiting position and the first reset position;

[0015] When the first limiting member is in the first limiting position, the first limiting member drives the second limiting member to the second reset position;

[0016] When the first limiting member is in the first reset position, the first limiting member drives the second limiting member to the second limiting position;

[0017] When the first limiting member is in the first initial position, the first limiting member drives the second limiting member to the second initial position, so that the first limiting member and the second limiting member simultaneously cancel the limiting of the spray bar assembly.

[0018] Furthermore, the fixed base is provided with a first sliding groove, and a second limiting member is provided in the first sliding groove. The first limiting member drives the second limiting member to move up and down along the first sliding groove to limit or cancel the limiting of the spray bar body.

[0019] Furthermore, the first limiting member has a plurality of teeth around its axis, and the second limiting member has a rack. The teeth and the rack mesh with each other to drive the second limiting member to move; or, the first limiting member has a push rod that swings with it, and the push rod pushes the second limiting member to move.

[0020] Furthermore, the second drive mechanism can also drive the first limiting member to switch to a first initial position between the first limiting position and the first reset position;

[0021] When the first limiting member is in the first limiting position and the first initial position, the second limiting member is in the second reset position;

[0022] When the first limiting member is in the first reset position, the first limiting member drives the second limiting member to the second limiting position.

[0023] Furthermore, the fixed base is provided with a second sliding groove, and a second limiting member that moves left and right within the second sliding groove is provided. An elastic member is also provided within the second sliding groove, with both ends of the elastic member abutting against the elastic member and the second limiting member. The elastic member is used to provide a force to the second limiting member to switch it to the second reset position.

[0024] Furthermore, the second limiting member is provided with a guide slope, and the first limiting member can abut against the guide slope to push the second limiting member to switch to the second limiting position.

[0025] The beneficial effects of this utility model are:

[0026] 1. This utility model proposes a spray bar device, including a spray bar assembly. The spray bar assembly includes a spray bar body and a sliding member slidably disposed therein. The spray bar body is connected to a detachable nozzle. It also includes a first limiting member and a second driving mechanism. The second driving mechanism drives the first limiting member to switch to a first limiting position or a first reset position. When in the first limiting position, the first limiting member abuts against the sliding member, and the sliding member slides relative to the spray bar body to abut against the nozzle, causing the nozzle to detach from the spray bar body. When in the first reset position, the first limiting member releases its restriction on the sliding member, allowing the extended spray bar assembly to retract. The first limiting member, controlled by the second driving mechanism, can selectively limit the sliding member at specific times, thereby converting the reverse movement of the spray bar body into a pushing force on the nozzle. This solves the problems of inconvenience caused by manual nozzle disassembly, easy water splashing, and easy retraction of the spray bar during installation in the prior art, achieving the technical effects of improving cleaning convenience, enhancing hygiene, and improving user experience.

[0027] 2. The present invention proposes a spray bar device in which a limiting protrusion and a limiting groove are provided between the sliding member and the spray bar body and are mutually concave and slidably connected. The movement of the sliding member is strictly constrained within a preset range, which not only ensures sufficient advance distance to complete nozzle disassembly, but also avoids structural interference or functional abnormality caused by overtravel.

[0028] 3. The present invention proposes a spray bar device in which the first limiting member is provided with a first limiting position and a second limiting position. The first limiting position and the second limiting position respectively abut against the ends of the sliding member from both sides to form a double-sided limiting. Compared with the single-point limiting, the double-point contact structure can effectively prevent the sliding member from deflecting, tilting or local stress concentration during the force process.

[0029] 4. The spray bar device proposed in this utility model further includes a second limiting member, which is linked to the first limiting member. The first limiting member drives the second limiting member to switch to the second limiting position or the second reset position after the spray bar assembly extends out of the fixing seat. When in the second limiting position, the second limiting member abuts against the spray bar body, restricting the spray bar body from retracting when the nozzle is installed, thereby effectively preventing the spray bar from retracting due to the thrust generated by the user installing the nozzle.

[0030] 5. The spray bar device proposed in this utility model has a guide slope on the second limiting member, which transforms the possible rigid collision into a progressive sliding push, effectively reducing the impact vibration during the movement. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is one of the initial position diagrams for Embodiment 1;

[0033] Figure 2 This is a schematic diagram of the nozzle detaching from the main body of the spray bar in Example 1;

[0034] Figure 3 This is a schematic diagram of the spray bar body being held in place in Example 1;

[0035] Figure 4 This is a schematic diagram of the spray bar assembly in Embodiment 1;

[0036] Figure 5 This is an exploded view of Example 1;

[0037] Figure 6 This is a schematic diagram of the first limiting member in Embodiment 1;

[0038] Figure 7 This is a schematic diagram of the second limiting member in Embodiment 1;

[0039] Figure 8 This is a schematic diagram of the cooperation between the first and second limiting members in Embodiment 1;

[0040] Figure 9 This is the second schematic diagram of the initial position in Example 1;

[0041] Figure 10 For the corresponding Figure 9 A cross-sectional view along the direction of movement of the spray bar assembly;

[0042] Figure 11 for Figure 10 Enlarged view of a portion of point A in the middle;

[0043] Figure 12 This is a schematic diagram showing the spray bar assembly fully extended in Example 1;

[0044] Figure 13 This is a schematic diagram of the first limiting member in the first limiting position according to Embodiment 1;

[0045] Figure 14 for Figure 13 Enlarged view of a section at point B in the middle;

[0046] Figure 15 This is a schematic diagram of the nozzle being ejected in Example 1;

[0047] Figure 16 For the corresponding Figure 15 A cross-sectional view along the direction of movement of the spray bar assembly;

[0048] Figure 17 for Figure 16 Enlarged view of part C in the middle

[0049] Figure 18 This is a schematic diagram showing the second limiting member in the second limiting position in Embodiment 1;

[0050] Figure 19 For the corresponding Figure 18 Cross-sectional view along the direction of movement of the spray bar assembly

[0051] Figure 20 for Figure 19 Enlarged view of a section at point D;

[0052] Figure 21 This is a schematic diagram of the initial position in Example 2;

[0053] Figure 22 This is a schematic diagram of the first limiting member in Embodiment 2;

[0054] Figure 23 For the corresponding Figure 21 A cross-sectional view along the direction of movement of the spray bar assembly;

[0055] Figure 24 for Figure 23 Enlarged view of a section at point E in the middle;

[0056] Figure 25 This is a cross-sectional view along the moving direction of the spray bar assembly when the nozzle is ejected in Embodiment 2.

[0057] Figure 26 for Figure 25 A magnified view of a section at point F in the middle;

[0058] Figure 27 This is a cross-sectional view of the spray bar assembly moving in the direction of movement when the second limiting member is in the second limiting position, as described in Embodiment 2.

[0059] Figure 28 for Figure 27 Enlarged view of a section at point G in the middle;

[0060] Figure 29 This is a schematic diagram of the initial position in Example 3;

[0061] Figure 30 For along Figure 29 Sectional view along the middle AA direction;

[0062] Figure 31 For the corresponding Figure 29 A cross-sectional view along the direction of movement of the spray bar assembly;

[0063] Figure 32 for Figure 31 Enlarged view of a section at point H;

[0064] Figure 33 This is a cross-sectional view along the moving direction of the spray bar assembly when the nozzle is ejected in Embodiment 3.

[0065] Figure 34 for Figure 33 Enlarged view of a section at point I;

[0066] Figure 35 This is a cross-sectional view of the spray bar assembly moving in the direction of movement when the second limiting member is in the second limiting position in Embodiment 3;

[0067] Figure 36 for Figure 35 Enlarged view of a section at point J;

[0068] Figure 37 When the second limiting member of Embodiment 3 is in the second limiting position, along Figure 29 Sectional view along the middle AA direction;

[0069] Figure 38 This is a schematic diagram of the second limiting member in Embodiment 3;

[0070] In the figure, 10 is a fixed base; 101 is a main slide groove; 102 is a clearance hole; 103 is a clearance track; 104 is a first slide groove; 105 is a second slide groove; 20 is a spray bar assembly; 201 is a spray bar body; 2011 is a housing; 20111 is a limiting groove; 2012 is a body; 20121 is a limiting part; 202 is a sliding member; 2021 is a limiting protrusion; 203 is a nozzle; 30 is a first limiting member; 301 is the second limiting member. 1. Rotating shaft; 3011. First rotating part; 3012. First limiting position; 302. Second rotating shaft; 3021. Second rotating part; 3022. Second limiting position; 303. Gear; 304. Push rod; 40. Second limiting member; 401. Rack; 402. Guide slope; 50. Elastic member; 60. First drive mechanism; 601. First motor; 602. Gear; 603. Gear belt; 70. Second drive mechanism. Detailed Implementation

[0071] Example 1

[0072] The following is combined with Figures 1-20 This utility model will be described in detail.

[0073] A spray boom device includes a fixed base 10, a spray boom assembly 20, and a first drive mechanism 60. The spray boom assembly 20 is slidably connected to the fixed base 10 and is driven by the first drive mechanism 60 to extend or retract relative to the fixed base 10. The spray boom includes a spray boom body 201 and a sliding member 202 slidably disposed within the spray boom body 201. The spray boom body 201 is connected to a detachable nozzle 203. The device also includes:

[0074] The first limiting member 30 and the second driving mechanism 70 drive the first limiting member 30 to switch to the first limiting position or the first reset position after the spray bar assembly 20 extends out of the fixed seat 10. When in the first limiting position, the first limiting member 30 abuts against the sliding member 202, and the sliding member 202 slides relative to the spray bar body 201 to abut against the nozzle 203, so that the nozzle 203 disengages from the spray bar body 201. When in the first reset position, the first limiting member 30 cancels the limiting of the sliding member 202, so that the extended spray bar assembly 20 retracts.

[0075] The mounting base 10 serves as the mounting base for the entire device, stably integrated within the toilet seat, providing support and a guiding foundation for other moving parts. The spray boom assembly 20 is slidably connected to the mounting base 10 and can complete reciprocating linear motion under the drive of the first drive mechanism 60, realizing the extension action during cleaning operations and the retraction and return to position after use. The first drive mechanism 60 includes a first motor 601, a gear 602, and a toothed belt 603. The first motor 601 is driven by the gear 602 meshing with the toothed belt 603, which is connected to the spray boom assembly 20, thereby driving the spray boom assembly 20 to slide along the mounting base 10.

[0076] The main body 201 of the spray bar forms the main channel for liquid flow. A connecting structure is provided at the front end for assembling the nozzle 203. This connection can be a snap-fit, magnetic, threaded, or interference fit type, allowing for easy replacement and cleaning of the nozzle 203. A sliding member 202 is located inside the main body 201 and can slide along the direction of movement of the main body 201.

[0077] When the first limiting member 30 reaches the first limiting position, its front end or side abuts against the end of the sliding member 202 away from the nozzle 203, forming a physical block against the backward movement of the sliding member 202. Subsequently, the first drive mechanism 60 controls the spray bar assembly 20 to begin retraction. Since the sliding member 202 is locked by the first limiting member 30 and cannot retract with the spray bar body 201, during the retraction of the spray bar body 201, the sliding member 202 generates a forward relative displacement relative to the spray bar body 201. This relative movement causes the front end of the sliding member 202 to gradually approach and eventually abut against the inner side of the nozzle 203, continuously applying a thrust until the nozzle 203 detaches from the spray bar body 201, completing the automatic disassembly process.

[0078] When the nozzle 203 does not require cleaning, the second drive mechanism 70 switches the first limiting member 30 to the first reset position, causing it to exit the contact area with the sliding member 202 and releasing its limiting constraint. At this time, the sliding member 202 returns to its free state and no longer obstructs the overall movement of the spray bar assembly 20, so the first drive mechanism 60 can smoothly drive the entire spray bar assembly 20 to extend or retract in a relatively fixed position.

[0079] This embodiment implements a structural design that can trigger the internal sliding member 202 to move during the retraction of the spray bar, thereby pushing the nozzle 203 to automatically disengage. The first limiting member 30, controlled by the second driving mechanism 70, can selectively limit the sliding member 202 at a specific time, thereby using the reverse movement of the spray bar body 201 to convert it into a pushing force on the nozzle 203. This solves the problems of inconvenience in operation, easy splashing of water droplets, and easy retraction of the spray bar during installation caused by the reliance on manual disassembly of the nozzle 203 in the prior art. It achieves the technical effects of improving cleaning convenience, enhancing hygiene level, and improving user experience.

[0080] like Figure 4 As shown, one of the sliding member 202 and the spray bar body 201 is provided with a limiting protrusion 2021, and the other is provided with a limiting groove 20111. The limiting protrusion 2021 is slidably connected to the limiting groove 20111, and the limiting groove 20111 restricts the movement stroke of the sliding member 202 relative to the spray bar body 201.

[0081] The limiting protrusion 2021 is a raised structure provided on the slider 202 or the spray bar body 201, extending a certain length along the moving direction of the spray bar assembly 20, and is used to embed into the corresponding limiting groove 20111 to achieve guided sliding. The limiting groove 20111 is an elongated recessed channel on another component, with a length greater than the extension length of the limiting protrusion 2021 but a matching width. The walls at both ends of the recessed channel constrain the moving stroke of the limiting protrusion 2021, ensuring that the slider 202 does not overextend the spray bar assembly 20. Furthermore, the spray bar body 201 includes a housing 2011 and a body 2012 fixedly connected within the housing 2011. An internal space is formed between the housing 2011 and the body 2012 to accommodate the movement of the slider 202. The slider 202 is slidably connected to the housing 2011 and located at the bottom of the body 2012, and the nozzle 203 is detachably connected to the front end of the body 2012. The limiting protrusion 2021 is provided on the outer periphery of the sliding member 202, and the corresponding position of the side wall of the spray bar body 201 is provided with a limiting groove 20111 of a certain length; in other embodiments, the limiting protrusion 2021 is provided on the inner wall of the spray bar body 201, and the outer surface of the sliding member 202 is provided with a corresponding limiting groove 20111 to accommodate the limiting protrusion 2021.

[0082] Through the cooperation structure of the limiting protrusion 2021 and the limiting groove 20111, the movement of the sliding member 202 is strictly constrained within the preset range, which not only ensures sufficient advance distance to complete the disassembly of the nozzle 203, but also avoids structural interference or functional abnormality caused by overtravel.

[0083] like Figure 6 As shown, the first limiting member 30 is provided with a first limiting position 3012 and a second limiting position 3022, which are respectively used to abut against the two sides of the end of the sliding member 202 away from the nozzle 203. Specifically, the first limiting position 3012 and the second limiting position 3022 are two oppositely arranged protrusions on the first limiting member 30, which are symmetrically or approximately symmetrically distributed in space, corresponding to the left and right sides of the end of the sliding member 202 away from the nozzle 203, respectively. When the first limiting member 30 moves to the first limiting position, the first limiting position 3012 and the second limiting position 3022 abut against the ends of the sliding member 202 from both sides, forming a double-sided limiting. Compared with single-point limiting, this double-point contact structure can effectively prevent the sliding member 202 from deflecting, tilting, or experiencing local stress concentration during the force application process.

[0084] The specific shapes of the first limiting position 3012 and the second limiting position 3022 can be designed as flat or inclined structures according to actual assembly requirements to match the end profile of the sliding member 202 and improve contact stability. For example, the first limiting position 3012 and the second limiting position 3022 adopt a rectangular boss structure with a micro-arc chamfer, which ensures sufficient contact area and avoids stress concentration at sharp angles.

[0085] Furthermore, the first limiting member 30 includes a first rotating shaft 301 and a second rotating shaft 302. The first rotating shaft 301 includes a first rotating part 3011 and a first limiting position 3012 disposed radially on the first rotating part 3011. The second rotating shaft 302 includes a second rotating part 3021 and a second limiting position 3022 disposed radially on the second rotating part 3021. The first rotating part 3011 and the second rotating part 3021 are interconnected and rotate synchronously, so that the first limiting position 3012 and the second limiting position 3022 always maintain a consistent relative position, ensuring that a balanced clamping force is applied to both ends of the sliding member 202.

[0086] like Figure 14 As shown, the fixed base 10 is provided with a main slide groove 101 for sliding connection of the spray bar assembly 20. The main slide groove 101 is provided with a clearance hole 102. The clearance hole 102 is used for the first limiting position 3012 and the second limiting position 3022 to enter and exit the main slide groove 101, so as to abut against the sliding member 202 or cancel the limiting of the sliding member 202.

[0087] The cross-sectional shape of the main slide 101 can be designed as a rectangular, dovetail, or T-shaped guide rail structure, etc. The clearance hole 102 is a through hole structure opened on the bottom wall of the main slide 101. Its position corresponds to the movement trajectory of the first limiting member 30, allowing the first limiting position 3012 and the second limiting position 3022 on the first limiting member 30 to enter or exit the internal space of the main slide 101 through the clearance hole 102. The shape of the clearance hole 102 can be designed as a circular, elongated, or irregular opening according to the movement mode of the first limiting member 30. The size must meet the requirement that the first limiting position 3012 and the second limiting position 3022 can pass smoothly, while avoiding excessive size that would reduce the structural strength or allow foreign objects to enter.

[0088] The spray boom assembly also includes a second limiting member 40, which is linked to the first limiting member 30. The first limiting member 30 drives the second limiting member 40 to switch to a second limiting position or a second reset position after the spray boom assembly 20 extends out of the fixing seat 10. When in the second limiting position, the second limiting member 40 abuts against the spray boom body 201, restricting the spray boom body 201 from retracting when the nozzle 203 is installed. When in the second reset position, the second limiting member 40 cancels the restriction on the spray boom body 201, causing the extended spray boom assembly 20 to retract.

[0089] Linkage connection refers to a defined mechanical coupling relationship between the first limiting member 30 and the second limiting member 40, such that a change in the position of the first limiting member 30 directly causes a positional response in the second limiting member 40. Specifically, the timing and position of the first limiting member 30 and the second limiting member 40 are uniformly controlled by the second drive mechanism 70. Linkage connection methods include rigid transmission (such as gear 602 and rack 401, linkage mechanism), flexible connection (steel wire cable), and indirect action (such as through cam drive), as long as synchronous motion can be achieved. For example, when the first limiting member 30 is rotated by the second drive mechanism 70, it drives the second limiting member 40 to enter or exit the limiting area of ​​the spray bar body 201 by lifting, swinging, or lateral movement.

[0090] In summary, by setting a second limiting member 40 that is linked to the first limiting member 30, mechanical locking of the spray bar body 201 is achieved during the nozzle 203 installation stage, thereby effectively preventing the spray bar from retracting due to the user applying thrust.

[0091] like Figure 5 As shown, the main slide 101 is provided with a clearance track 103 extending along the moving direction of the spray bar body 201. The spray bar body 201 is provided with a limiting part 20121 that passes through and moves along the clearance track 103. The second limiting member 40 limits or cancels the limiting part 20121. The clearance track 103 extends continuously along the extension / retraction direction of the spray bar body 201, and its length covers the maximum stroke range of the spray bar assembly 20. The limiting part 20121 is a protruding structure provided on the outside of the spray bar body 201 and slidingly engaged with the clearance track 103. It can be a rib-like protrusion integrally formed on the spray bar body 201, or it can be an independently installed pin or slider.

[0092] The second drive mechanism 70 can also drive the first limiting member 30 to switch to a first initial position between the first limiting position and the first reset position. The linkage relationship between the first limiting member 30 and the second limiting member 40 is as follows:

[0093] When the first limiting member 30 is in the first limiting position, the first limiting member 30 drives the second limiting member 40 to the second reset position; when the first limiting member 30 is in the first reset position, the first limiting member 30 drives the second limiting member 40 to the second limiting position; when the first limiting member 30 is in the first initial position, the first limiting member 30 drives the second limiting member 40 to the second initial position, so that the first limiting member 30 and the second limiting member 40 simultaneously cancel the limitation on the spray bar assembly 20, so that the spray bar assembly 20 can be freely retracted.

[0094] As can be seen, the movement path of the first limiting member 30 is designed to have three stable working points: the first limiting position is used to trigger the disassembly action of the nozzle 203, at which time the first limiting member 30 abuts against the sliding member 202 to restrict its backward movement, forcing the sliding member 202 to push the nozzle 203 away; the first reset position indicates the limit release state, allowing the spray bar assembly 20 to retract into the fixed base 10 as a whole; and the first initial position is set between the two, as an intermediate operating position, so that the second limiting member 40 enters the non-operating state simultaneously. The specific implementation of the three stable working points of the first limiting member 30 is an intermediate stop position in the rotation angle. The first driving mechanism 60 drives the first limiting member 30 to rotate in the same direction to different angles to correspond to the first reset position, the first initial position and the first limiting position respectively, thereby driving the second limiting member 40 to enter the second limiting position, the second initial position and the second reset position in sequence, realizing multi-stage linkage control.

[0095] The linkage between the first limiting member 30 and the second limiting member 40 enables multi-state limit control logic based on a single drive source. During the nozzle 203 cleaning process, the spray bar assembly 20 undergoes multiple stages: "extension → retraction of the limiting sliding member 202 → automatic disassembly of the nozzle 203 → extension → retraction of the limiting spray bar body 201 → installation of the nozzle 203 → reset." Each stage has different limit requirements. Using independent drives would increase system complexity and cost. However, by setting the linkage between the first limiting member 30 and the second limiting member, a multi-mode switching function is achieved—in automatic disassembly mode, only the first limiting member 30 functions; in installation and protection mode, only the second limiting member 40 functions; and during normal use of the spray bar assembly 20, both need to be in the first initial position and the second initial position respectively, allowing the spray bar assembly 20 to enter a fully free state.

[0096] The fixed base 10 is provided with a first sliding groove 104, and a second limiting member 40 is provided in the first sliding groove 104. The first limiting member 30 drives the second limiting member 40 to move up and down along the first sliding groove 104 to limit or cancel the limiting of the spray bar body 201. Specifically, as Figures 6 to 8 As shown, the first limiting member 30 is provided with a plurality of teeth 303 around its axis, and the second limiting member 40 is provided with a rack 401. The teeth 303 and the rack 401 mesh with each other to drive the second limiting member 40 to move.

[0097] The first limiting member 30 and the second limiting member 40 form a gear 602 and rack 401 structure. The gear 602 and rack 401 transmission structure converts rotational motion into linear motion. The gear 602 and rack 401 structure has the advantage of compact structure and is particularly suitable for application scenarios with limited design space. Specifically, when the second drive mechanism 70 drives the first limiting member 30 to rotate, the teeth 303 mesh with the rack 401, thereby driving the second limiting member 40 to move up and down along the slide groove. This allows the second limiting member 40 to enter or exit the area that limits the spray bar body 201, thus limiting or releasing the limit on the spray bar body 201.

[0098] The working principle of the spray bar device proposed in this embodiment is as follows:

[0099] like Figures 9 to 11 As shown, at this time, the first limiting member 30 and the second limiting member 40 are in the first initial position and the second initial position respectively, and the spray bar assembly 20 can extend and retract freely;

[0100] The first drive mechanism 60 drives the spray boom assembly 20 to fully extend, as follows: Figure 12 As shown. Subsequently, the second drive mechanism 70 drives the first limiting member 30 to rotate to the first limiting position, causing its teeth 303 to drive the second limiting member 40 to move down along the first slide groove 104 to the second reset position. At this time, the first limiting member 30 enters the limiting area of ​​the sliding member 202, and the second limiting member 40 disengages from the limiting area of ​​the spray bar body 201, as shown. Figure 13 and Figure 14 As shown.

[0101] The first drive mechanism 60 drives the spray bar assembly 20 to retract. The sliding member 202 stops at a designated position under the constraint of the first limiting member 30. The spray bar body 201 continues to retract, causing relative displacement between the sliding member 202 and the spray bar body 201. This allows the sliding member 202 to gradually approach the nozzle 203 until it contacts the nozzle 203 and applies axial force, triggering the automatic disassembly mechanism of the nozzle 203 to achieve rapid separation of the nozzle 203. Figures 15 to 17 As shown.

[0102] After nozzle 203 is disassembled and cleaned, it needs to be reinstalled. At this time, the first drive mechanism 60 drives the spray bar assembly 20 to extend, creating space for the first limiting member 30 to exit the limiting area of ​​the sliding member 202. Subsequently, the second drive mechanism 70 drives the first limiting member 30 to rotate in the opposite direction to the first reset position. The teeth 303 of the first limiting member 30 drive the second limiting member 40 to move upwards along the first slide groove 104 to the second limiting position. At this time, the second limiting member 40 enters the limiting area of ​​the spray bar body 201, and the first limiting member 30 disengages from the limiting area of ​​the sliding member 202. The first drive mechanism 60 drives the spray bar assembly 20 to retract until the spray bar body 201 abuts against the second limiting member 40 and stops moving. Figures 18 to 20 As shown. Because the second limiting member 40 limits the spray bar body 201, the installation accuracy will not be affected by the free movement of the spray bar assembly 20 when the user installs the nozzle 203, thus ensuring the coaxial alignment and stable docking of the nozzle 203 and the spray bar body 201.

[0103] After the nozzle 203 is installed in place, the first drive mechanism 60 drives the spray bar assembly 20 to extend again, creating movement space for the second limiting member 40 to exit the limiting area of ​​the spray bar body 201; then, the second drive mechanism 70 drives the first limiting member 30 to rotate to the first initial position, and its teeth 303 drive the second limiting member 40 to move down to the second initial position. At this time, both the first limiting member 30 and the second limiting member 40 return to their initial state, and the spray bar assembly 20 can extend and retract freely, entering the next working cycle.

[0104] Example 2

[0105] The following is combined with Figures 21-28 This utility model will be described in detail.

[0106] The difference between this embodiment and Embodiment 1 is that an alternative transmission connection method is proposed between the second limiting member 40 and the first limiting member 30 and the second limiting member 40. The movement state of the first limiting member 30 is the same as in Embodiment 1. Therefore, the other parts in Embodiment 1 are also applicable to this embodiment.

[0107] In this embodiment, the first limiting member 30 is provided with a push rod 304 that swings with it, and the push rod 304 pushes the second limiting member 40 to move. The push rod 304 pushes the structure to apply force directly through the lever principle.

[0108] A push rod 304, which swings with the first limiting member 30, is connected or integrated to the first limiting member 30. One end of the push rod 304 is fixed to the first limiting member 30, and the other end extends freely and contacts or connects with the second limiting member 40. When the first limiting member 30 rotates at an angle under the action of the second driving mechanism 70, the push rod 304 swings accordingly and pushes the second limiting member 40 along the first slide groove 104 with its free end.

[0109] In actual arrangement, the push rod 304 and the second limiting member 40 can transmit thrust through planar contact, roller transition or pin hinge, etc., to reduce frictional resistance and prevent jamming.

[0110] The working principle of the spray bar device proposed in this embodiment is the same as that in Embodiment 1, and will not be described again.

[0111] Example 3

[0112] The following is combined with Figures 29-38 This utility model will be described in detail.

[0113] The difference between this embodiment and Embodiment 1 is that a new transmission connection method is proposed between the second limiting member 40 and the first limiting member 30 and the second limiting member 40. In this embodiment, the movement state of the second limiting member 40 differs from that in Embodiment 1, while the movement state of the first limiting member 30 is the same as in Embodiment 1. Therefore, the other parts of Embodiment 1 are also applicable to this embodiment.

[0114] In this embodiment, the second driving mechanism 70 can also drive the first limiting member 30 to switch to the first initial position between the first limiting position and the first reset position; when the first limiting member 30 is in the first limiting position and the first initial position, the elastic member 50 drives the second limiting member 40 to the second reset position; when the first limiting member 30 is in the first reset position, the first limiting member 30 drives the second limiting member 40 to the second limiting position.

[0115] like Figure 30 and Figure 37 As shown, the fixed base 10 is provided with a second slide groove 105, within which a second limiting member 40 is provided that moves left and right. An elastic member 50 is also provided within the second slide groove 105, with both ends of the elastic member 50 abutting against the second limiting member 40. The elastic member 50 provides a force to the second limiting member 40, causing it to switch to a second reset position. The second slide groove 105 is a guide channel formed inside the fixed base 10, used to accommodate and guide the second limiting member 40 to move linearly in a preset direction. Its extension direction is preferably perpendicular to or at a certain angle to the extension direction of the spray bar body 201 to adapt to the overall structural layout requirements. The elastic member 50 can be a common elastic element such as a compression spring, torsion spring, rubber pad, or elastic metal sheet, and can be selected as a helical compression spring.

[0116] As can be seen, the movement path of the first limiting member 30 is the same as that in Embodiment 1, and it also has three stable working points. However, the first limiting member 30 and the second limiting member 40 are not fully linked. That is, the first limiting member 30 can only switch the second limiting member 40 from the second reset position to the second limiting position by abutting and pressing. When the first limiting member 30 disengages from the second limiting member 40, the elastic member 50 independently drives it back to the second reset position. Figures 30 to 37 As shown. Therefore, in this embodiment, the second limiting member 40 is only triggered when the first limiting member 30 reaches the first reset position, and in the remaining stages, the elastic member 50 keeps it in the second reset position.

[0117] like Figure 38 As shown, the second limiting member 40 is provided with a guide slope 402. The first limiting member 30 can abut against the guide slope 402 to push the second limiting member 40 to switch to the second limiting position, so that the rigid collision that may have existed is transformed into a progressive sliding push, which effectively reduces the impact vibration during the movement.

[0118] Specifically, when the first limiting member 30 rotates and swings under the drive of the second driving mechanism 70, it gradually approaches and abuts against the guide inclined surface 402. The force applied to the guide inclined surface 402 is decomposed into a normal component perpendicular to the guide inclined surface 402 and a tangential component along the direction of the guide inclined surface 402. The latter is converted into a force that pushes the second limiting member 40 to slide along the groove, thereby overcoming the preload of the elastic member 50 and smoothly switching from the second reset position to the second limiting position. The specific shape of the guide inclined surface 402 can be designed as a straight inclined surface or an arc transition inclined surface according to the actual assembly space and movement trajectory. Rollers can also be used instead of surface contact to further reduce frictional resistance.

[0119] The working principle of the spray bar device proposed in this embodiment is as follows:

[0120] like Figures 29 to 32 As shown, at this time, the first limiting member 30 and the second limiting member 40 are in the first initial position and the second initial position respectively, and the spray bar assembly 20 can extend and retract freely;

[0121] The first drive mechanism 60 drives the spray bar assembly 20 to fully extend. Subsequently, the second drive mechanism 70 drives the first limiting member 30 to rotate to the first limiting position, causing its teeth 303 to drive the second limiting member 40 to move down along the first sliding groove 104 to the second reset position. At this time, the first limiting member 30 enters the limiting area of ​​the sliding member 202, and the second limiting member 40 disengages from the limiting area of ​​the spray bar body 201. The first drive mechanism 60 drives the spray bar assembly 20 to retract, and the sliding member 202 stops at the designated position under the constraint of the first limiting member 30. The spray bar body 201 continues to retract, and the sliding member 202 and the spray bar body 201 generate relative displacement, causing the sliding member 202 to gradually approach the nozzle 203 until the sliding member 202 contacts the nozzle 203 and applies axial force, triggering the automatic disassembly mechanism of the nozzle 203 to achieve rapid separation of the nozzle 203. Figure 33 and Figure 34 As shown.

[0122] After the nozzle 203 is disassembled and cleaned, it needs to be reinstalled. At this time, the first drive mechanism 60 drives the spray bar assembly 20 to extend, creating space for the first limiting member 30 to exit the limiting area of ​​the sliding member 202. Subsequently, the second drive mechanism 70 drives the first limiting member 30 to rotate in the opposite direction to the first reset position. The first limiting member 30 abuts against the guide slope 402, thereby overcoming the force of the elastic member 50 and pushing the second limiting member 40 along the second slide groove 105 to the second limiting position. At this time, the second limiting member 40 enters the limiting area of ​​the spray bar body 201, and the first limiting member 30 disengages from the limiting area of ​​the sliding member 202. Figures 35 to 37 The first drive mechanism 60 drives the spray bar assembly 20 to retract until the spray bar body 201 abuts against the second limiting member 40 and stops moving. Since the second limiting member 40 limits the spray bar body 201, the installation accuracy will not be affected by the free movement of the spray bar assembly 20 when the user installs the nozzle 203, thereby ensuring the coaxial alignment and stable docking of the nozzle 203 and the spray bar body 201.

[0123] After the nozzle 203 is installed in place, the first drive mechanism 60 drives the spray bar assembly 20 to extend again, creating movement space for the second limiting member 40 to exit the limiting area of ​​the spray bar body 201; then, the second drive mechanism 70 drives the first limiting member 30 to rotate to the first initial position, the first limiting member 30 disengages from the second limiting member 40, and the second limiting member 40 moves along the second slide groove 105 to the second reset position under the action of the elastic member 50. At this time, both the first limiting member 30 and the second limiting member 40 return to their initial state, and the spray bar assembly 20 can extend and retract freely, entering the next working cycle.

[0124] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A spray boom device, comprising a fixed base, a spray boom assembly, and a first driving mechanism, wherein the spray boom assembly is slidably connected to the fixed base and is driven by the first driving mechanism to extend or retract relative to the fixed base, characterized in that, The spray bar assembly includes a spray bar body and a sliding member slidably disposed within the spray bar body. The spray bar body is connected to a detachable nozzle, and further includes: A first limiting member and a second driving mechanism, wherein the second driving mechanism drives the first limiting member to switch to a first limiting position or a first reset position after the spray bar assembly extends out of the fixed seat; When the spray bar assembly retracts and the first limiting member is in the first limiting position, the first limiting member abuts against the sliding member, causing the sliding member to slide relative to the spray bar body to abut against the nozzle, so that the nozzle disengages from the spray bar body; when the spray bar assembly retracts and the first limiting member is in the first reset position, the first limiting member releases its limitation on the sliding member, and the spray bar body drives the sliding member to retract.

2. The spray boom device as described in claim 1, characterized in that, The sliding member and the spray bar body each have a limiting protrusion and a limiting groove. The limiting protrusion is slidably connected to the limiting groove, and the limiting groove restricts the movement of the sliding member relative to the spray bar body.

3. The spray boom device as described in claim 1, characterized in that, The first limiting member is provided with a first limiting position and a second limiting position, which are respectively used to abut against the two sides of the sliding member away from the nozzle.

4. The spray boom device as described in claim 3, characterized in that, The fixed base is provided with a main slide groove for slidingly connecting the spray bar assembly. The main slide groove is provided with a clearance hole, which is used for the first limiting position and the second limiting position to enter and exit the main slide groove to abut against the sliding member or to cancel the limiting of the sliding member.

5. The spray boom device as described in claim 4, characterized in that, It also includes a second limiting member, which is linked to the first limiting member. The first limiting member drives the second limiting member to switch to a second limiting position or a second reset position after the spray bar assembly extends out of the fixed seat. When in the second limiting position, the second limiting member abuts against the spray bar body, restricting the retraction of the spray bar body when the nozzle is installed; when in the second reset position, the second limiting member cancels the restriction on the spray bar body, causing the extended spray bar assembly to retract.

6. The spray boom device as described in claim 5, characterized in that, The main slide is provided with a clearance track extending along the moving direction of the spray bar body. The spray bar body is provided with a limiting part that passes through and moves along the clearance track. The second limiting member restricts or cancels the limiting of the limiting part.

7. A spray boom device as described in claim 6, characterized in that, The second driving mechanism can also drive the first limiting member to switch to a first initial position between the first limiting position and the first reset position; When the first limiting member is in the first limiting position, the first limiting member drives the second limiting member to the second reset position; When the first limiting member is in the first reset position, the first limiting member drives the second limiting member to the second limiting position. When the first limiting member is in the first initial position, the first limiting member drives the second limiting member to the second initial position, so that the first limiting member and the second limiting member simultaneously cancel the limiting of the spray bar assembly.

8. A spray boom device as described in claim 7, characterized in that, The fixed base is provided with a first sliding groove, and a second limiting member is provided in the first sliding groove. The first limiting member drives the second limiting member to move up and down along the first sliding groove to limit or cancel the limiting of the spray bar body.

9. A spray boom device as described in claim 8, characterized in that, The first limiting member has a plurality of teeth around its axis, and the second limiting member has a rack. The teeth and the rack mesh with each other to drive the second limiting member to move; or, the first limiting member has a push rod that swings with it, and the push rod pushes the second limiting member to move.

10. A spray boom device as described in claim 6, characterized in that, The second driving mechanism can also drive the first limiting member to switch to a first initial position between the first limiting position and the first reset position; When the first limiting member is in the first limiting position and the first initial position, the second limiting member is in the second reset position; When the first limiting member is in the first reset position, the first limiting member drives the second limiting member to the second limiting position.

11. A spray boom device as described in claim 10, characterized in that, The fixed base is provided with a second sliding groove, and a second limiting member that moves left and right along the second sliding groove is provided in the second sliding groove. An elastic member is also provided in the second sliding groove. The two ends of the elastic member abut against the elastic member and the second limiting member. The elastic member is used to provide a force to the second limiting member to switch it to the second reset position.

12. A spray boom device as described in claim 11, characterized in that, The second limiting member is provided with a guide slope, and the first limiting member can abut against the guide slope to push the second limiting member to switch to the second limiting position.

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