Spray gun as well as intelligent cover plate and pedestal pan applying spray gun

By using a motor-driven guide structure and damping mechanism in the smart toilet gun, the translation and rotation of the nozzle are solved, and the high cost and large space occupation problems caused by multi-motor control in the prior art are solved, and cost reduction and space saving are achieved.

CN223214682UActive Publication Date: 2025-08-12GUANGDONG LEHUA HOME FURNISHING CO LTD
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Patent Information

Application Number
CN202422400191.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-08-12
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

The barrel of the existing smart toilet gun cannot adjust the direction of the water column and requires multiple motors to control it, resulting in high structural costs and large space occupancy.

Method used

The spray gun design is adopted with a motor-driven spray gun, combining the guide structure and damping mechanism to realize the translation and rotation of the nozzle, and perform different actions through a motor, simplifying the control logic and reducing structural costs.

Benefits of technology

It effectively reduces the structural cost of the spray gun, simplifies control logic, and reduces the space occupancy of smart covers and toilets.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223214682U_ABST
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Abstract

The utility model discloses a spray gun, and discloses an intelligent cover plate with the spray gun and a pedestal pan. The first pipe body is installed on the pipe support and can do linear translation in the axial direction, and a guide structure is arranged on the first pipe body. The motor is used for driving the first pipe body to translate; the second pipe body is mounted on the first pipe body, and the first pipe body can synchronously translate or asynchronously translate along the same straight line relative to the second pipe body; the spray head is rotatably mounted on the second pipe body, the spray head is slidably connected with the guide structure, and the first pipe body can drive the spray head to translate or rotate through the guide structure; the damping mechanism is located on the moving path of the second pipe body and applies resistance to the second pipe body. Under the cooperation of the motor, the guide structure and the damping mechanism, the translation action of the first pipe body and the second pipe body and the rotation action of the spray head can be achieved; different actions can be completed only through one motor, the overall structure cost is effectively reduced, and the control logic is simplified.
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Description

Technical Field

[0001] The utility model relates to spray washing equipment, in particular to a spray gun and an intelligent cover plate and a toilet using the same. Background Art

[0002] Most smart toilets are equipped with a spray gun assembly for functions such as posterior washing and feminine washing. When the spray gun assembly is not activated, the gun barrel is generally placed at the back of the smart toilet lid. When the spray gun assembly is activated, the gun barrel is extended using a stepper motor or other device, and cleaning water is sprayed through a nozzle at the front of the gun barrel through a pipeline, facilitating the cleaning of the body. However, most gun barrels cannot adjust the deflection of the water jet to the left or right. Some that can control the deflection of the water jet from the gun barrel require a separate motor control, resulting in high structural costs. In addition, space must be reserved for this motor, resulting in a large space requirement. Utility Model Content

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention proposes a spray gun.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides an intelligent cover plate and a toilet with the spray gun.

[0006] The spray gun according to the first embodiment of the present invention comprises:

[0007] Tube support;

[0008] a first tube body, mounted on the tube support and capable of linear translation along the axial direction, wherein the first tube body is provided with a guide structure;

[0009] a second tube body, mounted on the first tube body, wherein the first tube body is capable of synchronous translation or asynchronous translation along the same straight line relative to the second tube body;

[0010] a nozzle rotatably mounted on the second tube body, the nozzle being slidably connected to the guide structure, and the first tube body being capable of driving the nozzle to translate or rotate via the guide structure;

[0011] a damping mechanism, the damping mechanism being located on the movement path of the second tube body. When the second tube body moves to align with the damping mechanism, the damping mechanism applies resistance to the second tube body, causing the second tube body to translate relative to the first tube body, and driving the nozzle to rotate relative to the second tube body via the guide structure;

[0012] A motor is used to drive the first tube to translate.

[0013] The spray gun according to the embodiment of the present invention has at least the following beneficial effects: with the cooperation of a motor, a guide structure and a damping mechanism, the translational movement of the first tube body and the second tube body and the rotational movement of the nozzle can be realized; only one motor is required to complete different actions, effectively reducing the overall structural cost and simplifying the control logic.

[0014] According to some embodiments of the present invention, the first tube body is provided with a first rack arranged along its axial direction, the motor is driven by meshing with the first rack through a first gear, and the tube support is provided with a linearly extending slide groove, and the first rack is passed through the slide groove.

[0015] According to some embodiments of the present invention, the guide structure is that a first guide groove is provided on the inner wall of the first tube body, the first guide groove extends spirally around the central axis of the first tube body, the second tube body is coaxially inserted into the first tube body, the nozzle is rotatably connected to the end of the second tube body, and a sliding portion is provided on the nozzle head, and the sliding portion is slidably connected in the first guide groove.

[0016] According to some embodiments of the present invention, a second guide groove is provided on the inner wall of the second tube body, and the second guide groove is arranged in a ring shape around the central axis of the second tube body. A plug-in portion is provided on the nozzle, and a hook body is provided on the plug-in portion. The plug-in portion is coaxially inserted into the second tube body, and the hook body is hooked in the second guide groove.

[0017] According to some embodiments of the present invention, a water outlet is provided on the circumferential side wall of the nozzle, and a window is opened on the circumferential side wall of the first tube body. When spraying water, the water outlet sprays outward through the window along the radial direction of the first tube body.

[0018] According to some embodiments of the present invention, the damping mechanism includes an elastic member and a rotating member, the rotating member is rotatably mounted on the tube support, the elastic member applies rotational damping to the rotating member, and the rotating member is used to apply the resistance to the movement of the second tube body.

[0019] According to some embodiments of the present invention, the second tube body is provided with a second rack arranged along its axial direction, the rotating member includes a second gear, and the second rack and the second gear can be meshed and transmitted.

[0020] According to some embodiments of the present invention, the rotating member includes a shaft and a damping disk, the damping disk extends radially along the shaft, the shaft is rotatably connected to the pipe support, one of the planes of the damping disk is affixed to the side wall of the pipe support, the elastic member abuts against the damping disk and applies an elastic force to the damping disk axially downward onto the side wall of the pipe support to form the rotational damping.

[0021] The smart cover according to the second embodiment of the present invention includes a spray gun.

[0022] The smart cover according to the embodiment of the present invention has at least the following beneficial effects: the spray gun has a single motor structure, which reduces the space occupied by the smart cover and reduces the structural cost.

[0023] The toilet according to the second embodiment of the present invention includes a spray gun or an intelligent cover.

[0024] The toilet according to the embodiment of the present invention has at least the following beneficial effects: the spray gun has a single motor structure, which reduces the space occupied by the toilet and reduces the structural cost.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a schematic diagram of the structure when the spray gun is in the initial position;

[0028] Figure 2 yes Figure 1 Schematic diagram from another perspective;

[0029] Figure 3 yes Figure 1 Schematic diagram of the structural decomposition;

[0030] Figure 4 yes Figure 1 Schematic diagram of the internal structure;

[0031] Figure 5 yes Figure 4 Schematic diagram of switching to another usage state;

[0032] Figure 6 It is a structural diagram of the pipe support;

[0033] Figure 7 is a structural schematic diagram of the first tube body;

[0034] Figure 8 1 is a schematic structural diagram of the second tube body;

[0035] Figure 9 It is a structural diagram of the nozzle;

[0036] Figure 10It is a schematic diagram of the structural decomposition of the damping mechanism.

[0037] Figure 1: Pipe support 100; slide 110; pipe 120; first pipe body 200; first rack 210; first guide groove 220; window 230; second pipe body 300; second guide groove 310; second rack 320; nozzle 400; sliding portion 410; plug-in portion 420; hook body 421; water outlet 430; damping mechanism 500; elastic member 510; rotating member 520; second gear 530; shaft 540; damping disc 550; motor 600; first gear 610. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] The utility model relates to a spray gun, which comprises a pipe support 100, a first pipe body 200, a motor 600, a second pipe body 300, a spray head 400 and a damping mechanism 500.

[0040] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown, the tube support 100 can be configured as a structure such as a bracket. In this embodiment, a pipe 120 is provided on the frame of the tube support 100, and the first tube body 200 is passed through the pipe 120 to be installed on the tube support 100. The first tube body 200 can linearly translate relative to the tube support 100 along the axial direction. In the direction shown in the figure, the axial direction of the first tube body 200 is forward and backward, and the first tube body 200 translates in the forward and backward directions on the tube support 100. A guide structure is provided on the first tube body 200. The motor 600 can be installed on the tube support 100, and the motor 600 can be a stepping motor 600. The motor 600 can drive the first tube body 200 to move forward or backward by gear transmission, belt transmission, reducer transmission, etc. The second tube body 300 is installed on the first tube body 200, and the central axes of the first tube body 200 and the second tube body 300 are in the same direction. The second tube body 300 can be directly and coaxially inserted into the first tube body 200, or the first tube body 200 and the second tube body 300 can be indirectly connected through other connecting accessories. The first tube body 200 and the second tube body 300 can be synchronously translated along the axial direction, and the two can also be asynchronously translated in the same direction or in opposite directions at differential speeds in the axial direction. The nozzle 400 is installed on the second tube body 300, and the nozzle 400 and the second tube body 300 are relatively fixed in the axial direction, and the nozzle 400 can rotate around the central axis relative to the second tube body 300. The nozzle 400 is slidably connected to the guide structure. The damping mechanism 500 can be installed on the pipe support 100, and the damping mechanism 500 is located on the translation path of the second tube body 300. Initially, as Figure 4 As shown, the first tube body 200 and the second tube body 300 are located at the rear of the tube support 100, and the damping mechanism 500 is located on the forward path of the second tube body 300. During the translation of the second tube body 300, initially, the second tube body 300 enters the range of the damping mechanism 500, and the second tube body 300 and the damping mechanism 500 are not connected or in contact with each other. At this time, driven by the motor 600, the first tube body 200 moves forward axially, and the first tube body 200 drives the nozzle 400 to move forward axially synchronously through the guide structure. At the same time, the nozzle 400 drives the second tube body 300 to move forward axially synchronously, that is, the first tube body 200, the nozzle 400 and the second tube body 300 move forward synchronously at the same speed. As shown Figure 5As shown, when the first tube body 200 moves until the second tube body 300 enters the range of the damping mechanism 500, the second tube body 300 connects or contacts the damping mechanism 500. The motor 600 drives the first tube body 200 to continue moving forward, and the damping mechanism 500 applies resistance to the second tube body 300. This resistance has a certain obstructive effect on the forward movement of the second tube body 300, positioning the second tube body 300 at its current position. As the first tube body 200 continues to move forward, the second tube body 300 exerts a force pulling the nozzle 400 backward relative to the first tube body 200, preventing the nozzle 400 from continuing to move forward synchronously with the guide structure. At this time, the nozzle 400 will slide relative to the guide structure, and the guiding effect of the guide structure will rotate the nozzle 400 clockwise around the axis relative to the second tube body 300, thereby changing the direction of the nozzle 400. When the motor 600 drives the first tube 200 backward, the spray head 400 slides in the other direction relative to the guide structure, thereby causing the spray head 400 to rotate counterclockwise about the axis relative to the second tube 300. The second tube 300 is positioned in its current position due to the resistance of the damping mechanism 500. When the motor 600 rotates forward and reverse, it drives the first tube 200 forward and backward. The spray head 400 rotates clockwise or counterclockwise under the guidance of the guide structure, thereby changing the direction of the water spray from the spray head 400. After use, the motor 600 drives the first tube 200 backward. After the first tube 200 retreats to a certain position, it pushes the second tube 300 away from the damping mechanism 500. After the second tube 300 loses the resistance of the damping mechanism 500, the first tube 200 uses the guide structure to drive the spray head 400 and the second tube 300 to continue to move backward. At this time, the spray head 400 does not rotate relative to the second tube 300. Until the first tube body 200 and the second tube body 300 retreat and return to their original positions, the motor 600 stops. With the cooperation of a motor 600, a guide structure and a damping mechanism 500, the translational movement of the first tube body 200 and the second tube body 300 and the rotational movement of the spray head 400 can be realized. Compared with each action requiring a different drive mechanism for independent control, the spray gun only needs one motor 600 to complete different actions, effectively reducing the overall structural cost and simplifying the control logic. The utility model also relates to an intelligent cover plate, which includes the above-mentioned spray gun. It also relates to a toilet, which includes the above-mentioned spray gun or uses the above-mentioned cover plate. The spray gun is used to realize functions such as butt washing and women's washing. The spray head 400 in the spray gun is connected to an external liquid supply system or a liquid medicine device on the toilet. The liquid medicine device can be connected to the spray head 400 through a water pipe through the second tube body 300. The motor 600 is connected to the control system on the intelligent cover plate or the toilet. The spray gun has a single motor 600 structure, which reduces the space occupied by the smart cover or toilet and reduces the structural cost.

[0041] In some specific embodiments of the present invention, Figure 1 、 Figure 3 、 Figure 4、 Figure 6 and Figure 7 As shown, the first tube body 200 is provided with a first rack 210, which extends axially along the outer wall of the first tube body 200. The first rack 210 can be mounted on the first tube body 200 as a separate component or integrally formed therewith. The motor 600 and the first rack 210 are engaged and driven by a first gear 610. A chute 110 is provided on the tube support 100, extending along the direction of movement of the first tube body 200. A hollow cylindrical pipe 120 can be provided on the tube support 100. The chute 110 can be provided on the sidewall of the pipe 120 along the axial direction of the pipe 120, and the chute 110 can penetrate the inside and outside of the chute 110 along the radial direction of the pipe 120. The first tube body 200 is placed on the tube support 100 and penetrates the pipe 120. The inner diameter of the pipe 120 is slightly larger than the outer diameter of the first tube body 200. The first rack 210 is disposed within the chute 110 and extends beyond the pipe 120. The motor 600 drives the first gear 610 to rotate, which, through the first rack 210, drives the first tube 200 to move along the chute 110. The chute 110 guides the translation of the first tube 200 while restricting its rotation.

[0042] In some embodiments of the present invention, Figure 1 、 Figure 2 、 Figure 4 、 Figure 7 and Figure 9As shown, the guide structure is that a first guide groove 220 is provided on the inner wall of the first tube body 200. The inner wall of the first tube body 200 can be provided with one first guide groove 220, or a plurality of first guide grooves 220 can be provided. The first guide groove 220 extends in a threaded shape around the central axis of the first tube body 200. The inner diameter of the first tube body 200 is slightly larger than that of the second tube body 300, and the second tube body 300 is coaxially arranged in the first tube body 200. In order to prevent the second tube body 300 from rotating relative to the first tube body 200, a limiting groove can be provided between the first tube body 200 and the second tube body 300. The limiting groove extends along the axial direction of the first tube body 200, and the second tube body 300 slides in the limiting groove. The limiting rotation structure between the first tube body 200 and the second tube body 300 can also be other forms. The nozzle 400 is rotatably mounted on the end of the second tube body 300. The nozzle 400 is provided with a sliding connection portion 410, which can be a protruding column radially protruding from the outer wall of the nozzle 400. The sliding connection portion 410 is slidably connected to the first guide groove 220. When the second tube 300 is not subjected to resistance from the damping mechanism 500, the friction between the first tube 200 and the second tube 300, as well as the dragging of the nozzle 400 by the first guide groove 110 through the sliding connection portion 410, causes the second tube 300 to translate synchronously with the first tube 200. When the second tube 300 is subjected to resistance from the damping mechanism 500, the second tube 300 and the nozzle 400 are restricted from axial translation following the first tube 200. At this time, as the first tube 200 translates, the sliding connection portion 410 slides along the spiral extension direction of the first guide groove 220, thereby causing the nozzle 400 to rotate on the second tube 300.

[0043] The nozzle 400 can be rotatably mounted on the second tube 300 via a rotating shaft. The rotating shaft prevents the nozzle 400 and the second tube 300 from moving relative to each other in the axial direction. The connection method of the nozzle 400 and the second tube 300 is not limited to this. In this embodiment, Figure 1 、 Figure 4 、 Figure 8 and Figure 9 As shown, the inner wall of the second tube body 300 is provided with a second guide groove 310. The second guide groove 310 is arranged in an annular shape around the central axis of the second tube body 300. The second guide groove 310 can be a closed loop or an open loop. The nozzle 400 can be configured as a cylindrical structure. The nozzle 400 is provided with a plug-in portion 420, which extends in a cylindrical shape along the axial direction of the nozzle 400. The plug-in portion 420 is provided with a hook body 421 in the shape of a barb. The plug-in portion 420 is coaxially inserted into the second tube body 300, and the hook body 421 is hooked into the second guide groove 310. The cooperation between the hook body 421 and the second guide groove 310 restrains the nozzle 400 axially on the second tube body 300. At the same time, when the nozzle 400 rotates relative to the second tube body 300, the hook body 421 slides along the second guide groove 310.

[0044] In some embodiments of the present invention, Figure 1 、 Figure 7 and Figure 9 As shown, a water outlet 430 is provided on the circumferential sidewall of the nozzle 400. One or more water outlets 430 may be provided. A window 230 is provided on the circumferential sidewall of the first tube body 200. The window 230 may be located near the end of the first tube body 200. When spraying water, the water outlet 430 sprays water outward through the window 230 in the radial direction of the first tube body 200. The water outlet 430 changes the spray direction as the nozzle 400 rotates.

[0045] The damping mechanism 500 can be a damping block, which abuts against the outer wall of the second tube 300 to create frictional resistance, thereby limiting the forward movement of the second tube 300. The damping mechanism 500 can also have other structures. In this embodiment, the damping mechanism 500 includes an elastic member 510 and a rotating member 520. The elastic member 510 can be a spring, a torsion spring, or the like. The rotating member 520 is rotatably mounted on the tube holder 100. The elastic member 510 applies rotational damping to the rotating member 520. When the second tube 300 moves into alignment with the damping mechanism 500, the rotating member 520 connects or contacts the second tube 300, thereby applying resistance to the movement of the second tube 300. The rotating member 520 can be a roller structure, with the circumferential outer wall of the rotating member 520 abutting against the second tube 300. As the second tube 300 moves forward with the first tube 200, friction between the rotating member 520 and the second tube 300 creates resistance. The elastic member 510 adjusts the damping force exerted on the rotating member 520. When the first tube 200 returns to its initial position, the first tube 200 pushes the second tube 300 backward. The thrust exerted by the first tube 200 on the second tube 300 overcomes the resistance of the rotating member 520, causing the rotating member 520 to rotate. This prevents the rotating member 520 from exerting excessive resistance on the second tube 300, which would affect the return of the first and second tubes 200 and 300.

[0046] Specifically, such as Figure 4 、 Figure 6 and Figure 8As shown, the second tube body 300 is provided with a second rack 320. The second rack 320 extends axially along the outer wall of the second tube body 300. The section of the second tube body 300 where the second rack 320 is located is located outside the first tube body 200. The rotating member 520 includes a second gear 530. The second rack 320 and the second gear 530 are capable of meshing and transmitting. When the second tube body 300 advances with the first tube body 200, the second rack 320 enters the range of the damping mechanism 500 and meshes with the second gear 530. The first tube body 200 continues to advance, and the meshing of the second gear 530 and the second rack 320 limits the forward movement of the second tube body 300. When the first tube body 200 retreats and resets, the rear end of the first rack 210 on the first tube body 200 can abut the front end of the second rack 320, thereby pushing the second tube body 300 backward and reset, and the second gear 530 meshes and rotates relative to the second rack 320. The second gear 530 and the second rack 320 ensure a stable connection between the damping mechanism 500 and the second tube 300, thereby limiting the movement of the second tube 300 and preventing the damping mechanism 500 from directly contacting and rubbing against the tube wall of the second tube 300, causing wear or noise. Furthermore, the second rack 320 can be slidably connected to the chute 110 of the tube holder 100, thereby guiding the movement of the second tube 300 and limiting its rotation.

[0047] Further, such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 10 As shown, the rotating member 520 includes a shaft 540 and a damping disc 550. The damping disc 550 extends in a disc shape along the radial direction of the shaft 540. The shaft 540 is rotatably connected to the pipe support 100. The shaft 540 is perpendicular to the axial direction of the second tube body 300. The second gear 530 is coaxially mounted on the shaft 540. One plane of the damping disc 550 is in contact with the side wall of the pipe support 100. The elastic member 510 is a spring. The spring is sleeved on the shaft 540. One end of the elastic member 510 can be supported by the pipe support 100 or by the outer shell of the damping mechanism 500, and the other end of the elastic member 510 abuts against the damping disc 550. The elastic member 510 applies an elastic force to the damping disc 550, which axially presses the damping disc 550 downward toward the sidewall of the tube holder 100, thereby increasing the pressure between the damping disc 550 and the sidewall of the tube holder 100. As a result, the rotating member 520 utilizes the friction between the sidewall of the tube holder 100 and the damping disc 550 to generate rotational damping. The damping level can be adjusted by controlling the elastic force exerted by the elastic member 510 on the damping disc 550.

[0048] Throughout this specification, references to "some specific embodiments" and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spray gun, characterized in that: include: Tube support (100); A first tube body (200) is mounted on the tube support (100) and is capable of linear translation along the axial direction, and a guide structure is provided on the first tube body (200); A second tube body (300) is mounted on the first tube body (200), and the first tube body (200) is capable of synchronous translation or asynchronous translation along the same straight line relative to the second tube body (300); A nozzle (400) is rotatably mounted on the second tube body (300), the nozzle head (400) is slidably connected to the guide structure, and the first tube body (200) can drive the nozzle head (400) to translate or rotate through the guide structure; a damping mechanism (500), the damping mechanism (500) being located on a moving path of the second tube body (300); when the second tube body (300) moves to align with the damping mechanism (500), the damping mechanism (500) applies resistance to the second tube body (300) so that the second tube body (300) and the first tube body (200) move in relative translation, and drives the nozzle (400) to rotate relative to the second tube body (300) through the guide structure; The motor (600) is used to drive the first tube (200) to move in translation.

2. The spray gun according to claim 1, characterized in that: The first tube body (200) is provided with a first rack (210) arranged along its axial direction, the motor (600) is meshed with the first rack (210) for transmission via a first gear (610), the tube support (100) is provided with a linearly extending slide groove (110), and the first rack (210) is passed through the slide groove (110).

3. The spray gun according to claim 1, characterized in that: The guide structure is as follows: a first guide groove (220) is provided on the inner wall of the first tube body (200), the first guide groove (220) is spirally extended around the central axis of the first tube body (200), the second tube body (300) is coaxially penetrated by the first tube body (200), the nozzle (400) is rotatably connected to the end of the second tube body (300), and the nozzle (400) is provided with a sliding portion (410), and the sliding portion (410) is slidably connected in the first guide groove (220).

4. The spray gun according to claim 1 or 3, characterized in that: The inner wall of the second tube body (300) is provided with a second guide groove (310), and the second guide groove (310) is arranged in a ring shape around the central axis of the second tube body (300). The nozzle (400) is provided with a plug-in portion (420), and the plug-in portion (420) is provided with a hook body (421). The plug-in portion (420) is coaxially inserted into the second tube body (300), and the hook body (421) is hooked in the second guide groove (310).

5. The spray gun according to claim 3, characterized in that: A water outlet (430) is provided on the circumferential side wall of the nozzle (400), and a window (230) is provided on the circumferential side wall of the first tube body (200). When water is sprayed from the water outlet (430), the water is sprayed outward in the radial direction of the first tube body (200) through the window (230).

6. The spray gun according to claim 1, characterized in that: The damping mechanism (500) comprises an elastic member (510) and a rotating member (520), wherein the rotating member (520) is rotatably mounted on the tube support (100), the elastic member (510) applies rotational damping to the rotating member (520), and the rotating member (520) is used to apply the resistance to the movement of the second tube body (300).

7. The spray gun according to claim 6, characterized in that: The second tube (300) is provided with a second rack (320) arranged along its axial direction. The rotating member (520) includes a second gear (530). The second rack (320) and the second gear (530) are capable of meshing and transmitting.

8. The spray gun according to claim 6, characterized in that: The rotating member (520) includes a shaft (540) and a damping disc (550), wherein the damping disc (550) extends radially from the shaft (540), and the shaft (540) is rotatably connected to the pipe support (100), wherein one plane of the damping disc (550) is in contact with the side wall of the pipe support (100), and the elastic member (510) abuts against the damping disc (550) and applies an elastic force to the damping disc (550) that presses the damping disc (550) axially downward onto the side wall of the pipe support (100) to form the rotation damping.

9. A smart cover, characterized by: A spray gun comprising the spray gun according to any one of claims 1 to 8.

10. A toilet, characterized in that: Including the spray gun according to any one of claims 1 to 8 or the smart cover according to claim 9.