A cleaning component

Abstract

A cleaning assembly comprises a bracket and a spray rod portion that can be extended and retracted on the bracket, a self-cleaning assembly is installed at the front end of the spray rod portion, the self-cleaning assembly comprises an upper cover and a pressure plate, the upper cover is provided with a cleaning hole, one end of the pressure plate is hinged to the lower end of the upper cover, and a reset device is provided between the pressure plate and the upper cover, the pressure plate is also provided with a descaling member, and the bracket is provided with a limiting portion; during the extension and retraction process of the spray rod portion, the pressure plate abuts against the limiting portion so that the pressure plate swings upward around the hinge between the pressure plate and the upper cover, so that the descaling member is inserted into the cleaning hole, and after the pressure plate is separated from the limiting portion, the descaling member is pulled out of the cleaning hole by the reset device.

Description

Technical Field

[0001] The invention relates to the technical field of nozzle self-cleaning, and in particular to a cleaning component. Background Art

[0002] At present, smart toilets and covers have become one of the key hardware considerations when renovating bathrooms. However, the water quality in different regions of my country varies greatly, especially in hard water areas. Scale deposition often occurs due to water quality problems, which eventually leads to the water outlet pipes in the smart cover not working properly. This is a huge challenge for the use of smart toilets.

[0003] Therefore, various bathroom R&D companies have made self-cleaning a core feature of smart toilet covers. Water enters the smart toilet cover's internal water system, where it's heated before being ejected through the front cleaning hole, enabling the nozzle's self-cleaning function. However, water in hard water areas contains large amounts of calcium and magnesium ions, which easily form scale upon heating. As scale accumulates during use of smart toilets, it can easily clog the cleaning hole, rendering the smart toilet cover's self-cleaning function ineffective. Therefore, effectively unblocking and cleaning the cleaning hole is a major pain point in the industry.

[0004] Chinese patent CN201921610541.0 discloses a self-cleaning human body flushing device. During the telescopic movement, the self-cleaning water channel sprays water on the nozzle, and the cleaning element rubs against the nozzle to wash the nozzle. However, this patent can only clean the outer surface of the nozzle and cannot perform descaling operations deep inside the nozzle. Summary of the Invention

[0005] In view of the shortcomings of the background technology, the purpose of the present invention is to provide a cleaning component.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The cleaning component of claim 1, wherein the front end of the cleaning component is mounted on a support and a spray bar portion that can be extended or retracted therefrom. The cleaning component comprises an upper cover and a pressure plate, the upper cover is provided with a cleaning hole and a slot, one end of the pressure plate is pivotally connected to the slot and is located on the outer side of the upper cover, the other end of the pressure plate is provided with an actuating portion, and a reset device is provided between the pressure plate and the upper cover, and the pressure plate is further provided with a descaling member, the bracket is provided with a limiting portion that can abut against the actuating portion, the limiting portion is located on a path where the self-cleaning component is extended or retracted as the spray bar portion drives the self-cleaning component. When the spray bar portion drives the self-cleaning component to extend or retract, the actuating portion of the pressure plate abuts against the limiting portion, causing the pressure plate to swing around the slot toward the upper cover, thereby inserting the descaling member into the cleaning hole, and when the actuating portion disengages from the limiting portion during the extension and retraction process, the reset device completely pulls the descaling member out of the cleaning hole.

[0008] Furthermore, the pressure plate is pivotally connected to the bottom of the upper cover through the slot, and the actuating portion is provided on the lower end surface of the pressure plate, so that the pressure plate can abut against the limiting portion when the spray rod portion is extended or retracted, thereby pushing the pressure plate so that the other end thereof swings around the slot toward the upper cover.

[0009] Furthermore, the actuating portion is provided with driving surfaces on both the front and rear sides along the extension and retraction direction of the pressing plate, and the height of the driving surfaces is higher than the limiting portion.

[0010] Furthermore, the driving surface includes a first driving surface and a second driving surface, and a transition portion is connected between the first driving surface and the second driving surface; during the extension of the spray boom portion, the limiting portion abuts and pushes the first driving surface to cause the pressure plate to swing upward; during the retraction of the spray boom portion, the limiting portion abuts and pushes the second driving surface to cause the pressure plate to swing upward; when the transition portion abuts against the limiting portion, the pressure plate swings upward to the highest point.

[0011] Furthermore, a guide portion is provided at the front end of the bracket, and the guide portion is provided with a guide hole for the extension and retraction of the spray rod portion, and at least a portion of the inner wall surface of the bottom of the guide hole constitutes the limiting portion.

[0012] Furthermore, the pressure plate is provided with a first mounting position and a second mounting position, the first mounting position is away from the pressure plate and pivotally connected to one end of the slot and is used to install the descaling component, and the second mounting position is close to the pressure plate and pivotally connected to one end of the slot and is used to install the reset device.

[0013] Furthermore, a sealing member is clamped in the first installation position, and the sealing member is sleeved on the lower part of the descaling member.

[0014] Furthermore, the lower end of the upper cover is connected to the lower cover, and the lower cover is provided with a through hole and a receiving groove. The sealing member is slidingly and sealingly fitted in the through hole, and the receiving groove cooperates with the second mounting position to fix the upper and lower ends of the reset device respectively.

[0015] Furthermore, the portion of the sealing member located in the through hole is Y-shaped.

[0016] Furthermore, the front end of the lower cover is provided with a fixing portion, one end of the pressure plate is provided with a first clip, and the other end is provided with a second clip, the second mounting position is close to the first clip, the actuating portion and the first mounting position are close to the second clip, the first clip is pivotally connected to the slot, and the second clip is overlapped on the fixing portion.

[0017] Furthermore, the fixing portion includes two buckles arranged opposite to the hook, and the second buckle is provided with a fixing surface overlapping the hook.

[0018] Furthermore, a third mounting position is provided at the upper end of the upper cover for mounting a nozzle cover, and the nozzle cover is provided with a nozzle connected to the cleaning hole.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention proposes a cleaning assembly, wherein a self-cleaning assembly is mounted on the front end of the spray boom and moves forward and backward as the spray boom retracts and contracts, and a limiting portion is provided on the retracting path of the self-cleaning assembly. During the movement, an actuating portion provided on the pressure plate can abut against the limiting portion, so that the pressure plate can swing around one end pivotally connected to the upper cover, thereby inserting the descaling member on the pressure plate into the cleaning hole, and when the actuating portion of the pressure plate is disengaged from the limiting portion, the resetting device completely removes the descaling member from the cleaning hole; the actuating portion of the pressure plate abuts against the limiting portion during the extension and retraction process, respectively, thereby causing the limiting portion to push the pressure plate to swing toward the upper cover during the extension and retraction process, thereby inserting the descaling member into the cleaning hole during the extension and retraction process. Therefore, within one extension and retraction cycle of the spray boom, the descaling member can clean the cleaning hole twice, effectively preventing scaling in the cleaning hole.

[0021] 2. The present invention proposes a cleaning assembly, in which an actuating portion is provided at the bottom front end of the pressure plate, and the actuating portion is provided with driving surfaces on both the front and rear sides along the extension and retraction direction of the pressure plate, and the driving surfaces are higher than the limiting portion, so that the limiting portion can push the pressure plate through the driving surfaces to cause it to swing; since the driving surfaces are provided on both the front and rear sides in the extension and retraction direction of the actuating portion, the limiting portion pushes the pressure plate during the extension and retraction process of the spray rod portion, thereby inserting the descaling component into the cleaning hole; therefore, the cleaning hole will be unblocked and cleaned before and after each use of the spray rod portion.

[0022] 3. The present invention proposes a cleaning component, wherein the driving surface includes a first driving surface and a second driving surface, and the first driving surface and the second driving member are connected by a transition portion; during the extension of the spray boom portion, the limiting portion pushes the push plate upward by the first driving surface; during the retraction of the spray boom portion, the limiting portion pushes the push plate upward by the second driving surface; when the transition portion abuts against the limiting portion, the pressure plate swings upward to the highest point.

[0023] 4. The present invention proposes a cleaning assembly, in which a reset device is provided between the pressure plate and the lower cover, for ensuring that the descaling component can be restored to its initial position after being inserted into the cleaning hole for dredging and cleaning, and the second mounting position of the pressure plate and the accommodating groove of the lower cover respectively fix the lower end and the upper end of the reset device, ensuring that the position of the reset device will not shift during operation.

[0024] 5. The present invention proposes a cleaning component, in which a descaling member is externally mounted on a sealing member, and the sealing member is clamped on a pressure plate; the sealing member can be slidably and sealingly fitted in the through hole of the lower cover, and the portion of the sealing member located in the through hole is Y-shaped, thereby ensuring that the sealing member can seal while reducing frictional resistance with the inner wall of the through hole during sliding.

[0025] 6. A cleaning assembly proposed by the present invention has a first buckle at one end of the pressure plate and a second buckle at the other end, the first buckle is pivotally connected within the slot so that the pressure plate can swing around the slot; a fixing portion for overlapping the second buckle is provided at the lower end of the lower cover, and the fixing portion is used to limit the initial position of the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 is a schematic diagram of a cleaning assembly of the present invention;

[0028] Figure 2 An exploded view of a cleaning assembly of the present invention;

[0029] Figure 3 for Figure 2 A partial enlarged view;

[0030] Figure 4 A schematic diagram of a pressure plate of a cleaning assembly of the present invention;

[0031] Figure 5 A schematic diagram of a pressure plate of a cleaning assembly of the present invention from another angle;

[0032] Figure 6 A cross-sectional view of a pressure plate of a cleaning assembly of the present invention;

[0033] Figure 7 A cross-sectional view of an upper cover of a cleaning assembly of the present invention;

[0034] Figure 8 This is a schematic diagram of a lower cover of a cleaning assembly of the present invention;

[0035] Figure 9 A schematic diagram of a nozzle cover of a cleaning assembly of the present invention;

[0036] Figure 10 A cross-sectional view of a nozzle cover of a cleaning assembly of the present invention;

[0037] Figure 11 This is a schematic diagram of an initial state of a cleaning component of the present invention;

[0038] Figure 12A This is a schematic diagram of the extension of the spray bar portion of a cleaning assembly of the present invention;

[0039] Figure 12B This is a second schematic diagram of the extension of the spray bar portion of a cleaning assembly of the present invention;

[0040] Figure 12C This is a third schematic diagram of the extension of the spray bar portion of a cleaning assembly of the present invention;

[0041] Figure 13A This is a schematic diagram of the retraction of the spray boom portion of a cleaning assembly of the present invention;

[0042] Figure 13B This is a second schematic diagram of the retraction of the spray boom portion of a cleaning assembly of the present invention;

[0043] Figure 13C This is a third schematic diagram of the retraction of the spray boom portion of a cleaning assembly of the present invention;

[0044] In the figure, 10, bracket; 101, guide part; 1011, guide hole; 1012, give way groove; 1013, limit part; 20, spray rod part; 201, transmission part; 30, self-cleaning component; 301, upper cover; 3011, cleaning hole; 3012, third installation position; 3013, boss; 3014, groove; 3015, slot; 302, lower cover; 3021, through hole; 3022, fixing part; 40, pressure plate; 401, actuator; 4011, first drive Surface; 4012, second drive surface; 4013, transition part; 402, first installation position; 4021, snap-in hole; 4022, fixing hole; 403, second installation position; 404, first snap; 405, second snap; 4051, fixing surface; 50, descaling part; 60, reset device; 70, sealing part; 80, nozzle cover; 801, nozzle; 802, water channel; 803, rib; 901, drive motor; 902, conveyor belt; 903, transition gear. DETAILED DESCRIPTION

[0045] The following combination Figure 1-1 3. The present invention is described in detail.

[0046] A cleaning assembly includes a bracket 10 and a spray bar portion 20 that can be extended and retracted on the bracket 10. The front end of the spray bar portion 20 is equipped with a self-cleaning assembly 30 that can be extended and retracted with it. The self-cleaning assembly 30 includes an upper cover 301 and a pressing plate 40. The upper cover 301 is provided with a cleaning hole 3011 and a slot 3015. One end of the pressing plate 40 is pivotally connected to the slot 3015 and is located on the outside of the upper cover 301. The other end of the pressing plate 40 is provided with an actuating portion 401, and a reset device 60 is provided between the pressing plate 40 and the upper cover 301. The pressing plate 40 is equipped with at least one descaling member 50. The bracket 10 is provided with a There is a limiting portion 1013 that can abut against the actuating portion 401, and the limiting portion 1013 is located on the telescopic path of the self-cleaning component 30 along with the spray rod portion 20; the spray rod portion 20 drives the self-cleaning component 30 during the telescopic process, so that the actuating portion 401 of the pressure plate 40 abuts against the limiting portion 1013, so that the pressure plate 40 swings around the slot 3015 toward the upper cover 301, thereby allowing the descaling component 50 to be inserted into the cleaning hole 3011, and when the actuating portion 401 disengages from the limiting portion 1013 during the telescopic process, the resetting device 60 completely pulls the descaling component 50 out of the cleaning hole 3011.

[0047] Therefore, the actuator 401 of the pressure plate 40 abuts against the stopper 1013 during both the extension and retraction processes, causing the stopper 1013 to push the pressure plate 40 toward the upper cover 301 during both the extension and retraction processes, thereby allowing the descaling member 50 to be inserted into the cleaning hole 3011 during both the extension and retraction processes. Therefore, within one extension and retraction cycle of the spray boom 20, the descaling member 50 can clean the cleaning hole 3011 twice, effectively preventing scale from forming in the cleaning hole 3011.

[0048] In this embodiment, the pressing plate 40 is pivotally connected to the bottom of the upper cover 301 via the slot 3015, and the actuating portion 401 is provided on the lower end surface of the pressing plate 40, so that the pressing plate 40 can abut against the limiting portion 1013 when the spray boom portion 20 is extended or retracted, thereby pushing the pressing plate 40 so that the other end thereof swings upward about the slot 3015 toward the upper cover 301. In other embodiments, the pressing plate 40 can also be pivotally connected to the top of the upper cover 301 via the slot 3015, and the actuating portion 401 is provided on the upper end surface of the pressing plate 40, so that the pressing plate 40 can abut against the limiting portion 1013 when the spray boom portion 20 is extended or retracted, thereby pushing the pressing plate 40 so that the other end thereof swings downward about the slot 3015 toward the upper cover 301.

[0049] In this embodiment, the actuator 401 is provided with driving surfaces on both the front and rear sides along the extension and retraction direction of the pressure plate 40, and the height of the driving surfaces is higher than the limiting portion 1013. Furthermore, the driving surfaces include a first driving surface 4011 and a second driving surface 4012, with a transition portion 4013 connecting the first driving surface 4011 and the second driving surface 4012. When the boom portion 20 is extended, the limiting portion 1013 abuts and pushes the first driving surface 4011 to cause the pressure plate 40 to swing upward. When the boom portion 20 is retracted, the limiting portion 1013 abuts and pushes the second driving surface 4012 to cause the pressure plate 40 to swing upward. When the transition portion 4013 abuts the limiting portion 1013, the pressure plate 40 swings upward to its highest point.

[0050] In this embodiment, a guide portion 101 is provided at the front end of the bracket 10 . The guide portion 101 is provided with a guide hole 1011 for the extension and retraction of the spray rod 20 . At least a portion of the inner wall surface of the bottom of the guide hole 1011 constitutes a limiting portion 1013 .

[0051] In this embodiment, a transmission portion 201 is provided at the bottom of the boom portion 20 for transmission connection to the drive motor 901. A clearance groove 1012 is provided at the bottom of the guide hole 1011 to allow for the transmission portion 201. Positioning portions 1013 are provided on either side of the clearance groove 1012. The drive portion is correspondingly provided on either side of the bottom front end of the pressure plate 40, wherein the transmission portion 201 is a rack. Specifically, the bracket 10 is provided with the drive motor 901. One end of the conveyor belt 902 is sleeved onto the output end of the drive motor 901. The other end of the conveyor belt 902 is sleeved onto a transition gear 903. The transition gear 903 engages with the transmission portion 201. Thus, the boom portion 20 can be extended or retracted by rotating the drive motor 901 forward or reverse.

[0052] In this embodiment, the pressure plate 40 is provided with a first mounting position 402 and a second mounting position 403. The first mounting position 402 is pivotally connected to one end of the slot 3015 away from the pressure plate 40 and is used to install the descaling component 50. The second mounting position 403 is pivotally connected to one end of the slot 3015 close to the pressure plate 40 and is used to install the reset device 60. Furthermore, a sealing component 70 is clamped in the first mounting position 402, and the sealing component 70 is sleeved on the lower part of the descaling component 50.

[0053] In this embodiment, the descaling member 50 is a descaling needle, one end of which is elbow-shaped and the other end is vertical. The first mounting position 402 includes a snap-in hole 4021 and a fixing hole 4022. The sidewall of the snap-in hole 4021 is provided with a protrusion. The descaling member 50 is located in the snap-in hole 4021, and its elbow-shaped end is inserted into the fixing hole 4022. At the same time, the sealing member 70 is snap-fitted into the snap-in hole 4021 via a protrusion and is sleeved on the outside of the descaling member 50. Specifically, there are two first mounting positions 402, which can also be increased or decreased according to actual needs. Each first mounting position 402 is equipped with a descaling member 50, and the outside of each descaling member 50 is sleeved with a sealing member 70, which is snap-fitted into the corresponding first mounting position 402. The second mounting position 403 is in the shape of a groove and is used to fix the lower end of the reset device 60 , and the reset device 60 is a spring. The reset device 60 is used to ensure that the descaling member 50 can be restored to its initial position after being inserted into the cleaning hole 3011 for dredging and cleaning.

[0054] In this embodiment, the lower end of the upper cover 301 is connected to the lower cover 302, and the lower cover 302 is provided with a through hole 3021 and a receiving groove. The sealing member 70 is slidingly and sealingly fitted in the through hole 3021, and the receiving groove cooperates with the second mounting position 403, and is respectively used to fix the upper and lower ends of the reset device 60, to ensure that the position of the reset device 60 does not shift during operation; further, the portion of the sealing member 70 located in the through hole 3021 is Y-shaped, to ensure that the sealing member 70 is sealed while reducing the friction resistance with the inner wall of the through hole 3021 during sliding.

[0055] In this embodiment, a fixing portion 3022 is provided at the front end of the lower cover 302, and a first latch 404 and a second latch 405 are provided along the length of the pressing plate 40. The first latch 404 is connected to the lower end of the upper cover 301, facilitating the pressing plate 40 to swing about the first latch 404 when the driving portion is pushed by the limiting portion 1013. The second latch 405 overlaps the fixing portion 3022, and the fixing portion 3022 is used to define the initial position of the pressing plate 40. Furthermore, the fixing portion 3022 includes two latches arranged opposite to each other, and the second latch 405 has a fixing surface 4051 that overlaps the latch.

[0056] In this embodiment, the upper end of the upper cover 301 is provided with a third mounting position 3012 for mounting the nozzle cover 80. The nozzle cover 80 is provided with a nozzle 801 that communicates with the cleaning hole 3011. Specifically, the nozzle cover 80 is provided with the nozzle 801 and the water passage 802 that communicate with each other. The bottom wall of the third mounting position 3012 is provided with a boss 3013, which is provided with the cleaning hole 3011. The water passage 802 is sleeved outside the boss 3013. The front and rear side walls of the third mounting position 3012 are provided with grooves 3014. The front and rear side walls of the nozzle cover 80 are provided with ribs 803 that can be snapped into the grooves 3014.

[0057] The working principle of the cleaning component proposed by the present invention is as follows:

[0058] Take the first buckle 404 of the pressure plate 40 as an example, which is pivotally connected to the lower part of the upper cover 301. The driving motor 901 is started in forward rotation, so that the spray rod 20 extends forward, and the self-cleaning assembly 30 moves forward with the spray rod 20. The first driving surface 4011 of the driving part abuts against the limiting part 1013, as shown in FIG. Figure 12A As shown; the self-cleaning assembly 30 continues to move forward with the spray rod portion 20, and the limiting portion 1013 pushes the pressure plate 40 through the first driving surface 4011 to swing upward around the slot 3015 until the transition portion 4013 abuts against the limiting portion 1013, so that the sealing member 70 installed on the pressure plate 40 slides upward in the through hole 3021 and the descaling member 50 moves upward and is inserted into the cleaning hole 3011. At this time, the pressure plate 40 swings upward to the highest point, thereby clearing the cleaning hole 3011. Figure 12B As shown; the self-cleaning assembly 30 continues to move forward with the spray rod portion 20, the driving portion disengages the limiting portion 1013 and under the action of the reset device 60, the pressure plate 40 swings downward, thereby driving the sealing member 70 to slide downward in the through hole 3021 until the second buckle 405 abuts against the hook portion of the lower cover 302, thereby pulling the descaling member 50 out of the cleaning hole 3011, as shown Figure 12C So far, the cleaning of the cleaning hole 3011 is completed.

[0059] The driving motor 901 is reversed and started, so that the spraying rod 20 retracts backwards, and the self-cleaning assembly 30 retracts backwards along with the spraying rod 20. The second driving surface 4012 of the driving part abuts against the limiting part 1013, as shown in FIG. Figure 13A As shown; the self-cleaning assembly 30 continues to move backward with the spray rod portion 20, and the limiting portion 1013 pushes the pressure plate 40 through the second driving surface 4012 to swing upward around the slot 3015 until the transition portion 4013 abuts against the limiting portion 1013, so that the sealing member 70 installed on the pressure plate 40 slides upward in the through hole 3021 and the descaling member 50 moves upward and is inserted into the cleaning hole 3011. At this time, the pressure plate 40 swings upward to the highest point, thereby clearing and cleaning the cleaning hole 3011. Figure 13BAs shown; the self-cleaning assembly 30 continues to move backward with the spray rod portion 20, the driving portion disengages from the limiting portion 1013 and under the action of the reset device 60, the pressure plate 40 swings downward, thereby driving the sealing member 70 to slide downward in the through hole 3021 until the second buckle 405 abuts against the hook portion of the lower cover 302, thereby pulling the descaling member 50 out of the cleaning hole 3011, as shown Figure 13C So far, the secondary dredging and cleaning of the cleaning hole 3011 is completed.

[0060] Therefore, each time the user uses the spray boom portion 20, the self-cleaning component 30 will be inserted into the cleaning hole 3011 for combing and cleaning during the extension and retraction of the spray boom portion 20. That is, the user uses the spray boom portion 20 once, and the cleaning hole 3011 will be cleaned twice, continuously keeping the cleaning hole 3011 unobstructed, ensuring that the self-cleaning function of the nozzle 801 operates normally.

[0061] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A cleaning assembly comprising a bracket and a spray bar portion that can be extended and retracted on the bracket, characterized in that: The front end of the spray boom portion is equipped with a self-cleaning component that can be extended and retracted with it, and the self-cleaning component includes an upper cover and a pressure plate, the upper cover is provided with a cleaning hole and a slot, one end of the pressure plate is pivotally connected to the slot and is located on the outside of the upper cover, the other end of the pressure plate is provided with an actuating portion, and a reset device is provided between the pressure plate and the upper cover, the pressure plate is also equipped with a descaling member, the bracket is provided with a limiting portion that can abut against the actuating portion, and the limiting portion is located on the path of the self-cleaning component as the spray boom portion is extended and retracted; the spray boom portion drives the self-cleaning component in the process of extension and retraction, so that the actuating portion of the pressure plate abuts against the limiting portion so that the pressure plate swings around the slot toward the upper cover, thereby allowing the descaling member to be inserted into the cleaning hole, and when the actuating portion disengages from the limiting portion during the extension and retraction process, the descaling member is completely pulled out of the cleaning hole by the reset device.

2. A cleaning assembly according to claim 1, characterized in that: The pressure plate is pivotally connected to the bottom of the upper cover through the slot, and the actuating portion is provided on the lower end surface of the pressure plate, so that the pressure plate can abut against the limiting portion when the spray rod portion is extended or retracted, thereby pushing the pressure plate so that the other end thereof swings around the slot toward the upper cover.

3. A cleaning assembly according to claim 2, characterized in that: The actuating portion is provided with driving surfaces on both the front and rear sides along the extension and contraction direction of the pressing plate, and the height of the driving surfaces is higher than that of the limiting portion.

4. A cleaning assembly according to claim 3, characterized in that: The driving surface includes a first driving surface and a second driving surface, and a transition portion is connected between the first driving surface and the second driving surface; during the extension of the spray boom portion, the limiting portion abuts and pushes the first driving surface to cause the pressure plate to swing upward; during the retraction of the spray boom portion, the limiting portion abuts and pushes the second driving surface to cause the pressure plate to swing upward; when the transition portion abuts against the limiting portion, the pressure plate swings upward to the highest point.

5. A cleaning assembly according to claim 1, characterized in that: A guide portion is provided at the front end of the bracket. The guide portion is provided with a guide hole for the extension and retraction of the spray rod portion. At least a portion of the inner wall surface of the bottom of the guide hole constitutes the limiting portion.

6. A cleaning assembly according to claim 1, characterized in that: The pressure plate is provided with a first mounting position and a second mounting position, the first mounting position is away from the pressure plate and pivotally connected to one end of the slot and is used to install the descaling component, and the second mounting position is close to the pressure plate and pivotally connected to one end of the slot and is used to install the reset device.

7. A cleaning assembly according to claim 6, characterized in that: A sealing component is clamped in the first installation position, and the sealing component is sleeved on the lower part of the descaling component.

8. A cleaning assembly according to claim 7, characterized in that: The lower end of the upper cover is connected to the lower cover, and the lower cover is provided with a through hole and a receiving groove. The sealing member is slidingly and sealingly fitted in the through hole, and the receiving groove cooperates with the second mounting position to fix the upper and lower ends of the reset device respectively.

9. A cleaning assembly according to claim 8, characterized in that: The portion of the sealing member located in the through hole is Y-shaped.

10. A cleaning assembly according to claim 8, characterized in that: A fixing portion is provided at the front end of the lower cover, a first clip is provided at one end of the pressure plate, and a second clip is provided at the other end, the second mounting position is close to the first clip, the actuating portion and the first mounting position are close to the second clip, the first clip is pivotally connected to the slot, and the second clip is overlapped on the fixing portion.

11. A cleaning assembly according to claim 10, characterized in that: The fixing portion includes two buckles arranged opposite to the hook, and the second buckle is provided with a fixing surface overlapped with the hook.

12. A cleaning assembly according to claim 1, characterized in that: A third mounting position is provided at the upper end of the upper cover for mounting a nozzle cover, wherein the nozzle cover is provided with a nozzle connected to the cleaning hole.

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