Flushing sensing device and urinal using same

Abstract

The invention discloses a flushing induction device and discloses a urinal with the flushing induction device, and the flushing induction device comprises a solenoid valve assembly which is arranged on a water passing pipe and used for controlling the opening and closing of the water passing pipe; each connecting assembly comprises a flexible connector, a connecting base and a fastener, one end of the flexible connector is inserted into the connecting base, the flexible connector and the connecting base are clamped and fixed through the fastener, the connecting base is used for communicating an external water pipe with the flexible connector, and the connecting assemblies are installed at the two ends of the water passing pipe and connected with the water passing pipe through the flexible connector; multi-degree-of-freedom connection of the flushing sensing device, the water inlet pipe and the water outlet pipe is achieved through flexible connection, the installation difficulty degree is greatly reduced, and the problem that installation cannot be achieved due to installation environment limitation or size deviation is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of urinal flushing devices, and particularly to a flushing induction device and a urinal using the same. Background Art

[0002] The existing up-and-down type induction flushing devices basically adopt the technical solution of an inlet pipe adapted to a solenoid valve. After the solenoid valve receives the induction driving electric energy, the solenoid valve is opened, and water flows through the nozzle to achieve flushing. The installation method of this technical solution is of the direct plug type. The curved foot is wrapped with raw material tape and screwed into the pre-embedded pipe interface, and then the faucet is inserted into the curved foot and locked. During actual installation, once the pre-embedded pipes for hot and cold water inlets are skewed, it will cause the faucet to be unable to be installed, or the pre-embedded pipes are sunken too much, making it difficult to ensure the screwing stability between the curved foot and the pre-embedded pipe, seriously affecting the installation efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the above technical problems in the related art to some extent. For this purpose, the present invention provides a flushing induction device.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] The present invention also provides a urinal having the above flushing induction device.

[0006] The flushing induction device according to the first aspect embodiment of the present invention includes:

[0007] A water pipe, on which a solenoid valve assembly is provided for controlling its opening and closing;

[0008] A connection assembly, including a flexible connection, a connection seat and a fastener. One end of the flexible connection is inserted into the connection seat, and the fastener clamps and fixes the flexible connection to the connection seat. The connection seat is used to connect an external water pipe to the flexible connection. The connection assemblies are installed at both ends of the water pipe, and the connection assembly is connected to the water pipe through the flexible connection.

[0009] The flushing induction device according to the embodiment of the present invention has at least the following beneficial effects: The multi-degree-of-freedom connection between the flushing induction device and the inlet pipe and the outlet pipe is realized through the flexible connection, greatly reducing the installation difficulty and effectively solving the problem that it cannot be installed due to installation environment limitations or dimensional deviations.

[0010] According to some embodiments of the present invention, a plug-in cavity is formed inside the connecting seat, and both ends of the plug-in cavity are open. A through groove connected to the plug-in cavity is formed on the side wall of the connecting seat, and a ring-shaped extending groove is provided on the outer wall of the flexible connection. A part of the flexible connection is plugged into the plug-in cavity, and the groove is opposite to the through groove. The fastener is provided with a clamping arm, and the clamping arm passes through the through groove and is clamped on the clamping groove.

[0011] According to some embodiments of the present invention, the flexible connection is provided with a plurality of the slots, wherein a portion of the slots are sleeved with sealing rings, and the sealing rings are used to seal the connection between the connecting seat and the flexible connection or between the water pipe and the flexible connection.

[0012] According to some embodiments of the present invention, the soft connection includes a first tube body, a second tube body and a transition part, the first tube body and the second tube body are formed at both ends of the transition part, the first tube body and the second tube body are flexible tube bodies, one of the first tube body and the second tube body is connected to the connecting seat, and the other is connected to the end of the water pipe.

[0013] According to some embodiments of the present invention, a fixing frame and a control box are further included, the water pipe, the solenoid valve assembly and the connecting assembly are installed on the control box, the control box is also provided with a sensing module, and the fixing frame and the control box are connected in a snap-on manner.

[0014] According to some embodiments of the present invention, the solenoid valve assembly includes a solenoid valve body and a water pressure self-compensating mechanism, the water pipe includes a water inlet section and a water outlet section connected in sequence, a water outlet is provided between the water inlet section and the water outlet section, the water pressure self-compensating mechanism is installed on the water pipe, the water pressure self-compensating mechanism includes a spring-loaded head and a first flow channel, the spring-loaded head can move between a first position and a second position relative to the water outlet, the spring-loaded head tends to elastically move to the first position to block the water outlet, the spring-loaded head can move to the second position to leave the water outlet after being acted upon by the water pressure of the water inlet section, a second flow channel is provided on the spring-loaded head, the water inlet section, the second flow channel, the first flow channel and the water outlet section are connected in sequence, and the solenoid valve body is used to control the opening and closing of the first flow channel.

[0015] According to some embodiments of the present invention, the spring-loaded head includes a shaft body, the second flow channel is opened in the shaft body along the axial direction of the shaft body, the shaft body has a water hole opened in the radial direction, the second flow channel is connected with the water inlet section through the water hole, an elastic ring is sleeved on the shaft body, the elastic ring is aligned with the water hole, and the elastic ring is elastically deformed by the water pressure of the water inlet section to change the blocking area of ​​the water hole.

[0016] According to some embodiments of the present invention, the shaft body includes a first shaft section and a second shaft section arranged coaxially. The outer diameter of the first shaft section is smaller than that of the second shaft section. The water passing hole is opened on the first shaft section, and the elastic ring is sleeved on the first shaft section and abuts against the second shaft section.

[0017] According to some embodiments of the present invention, the water pressure self-compensation mechanism further includes a base body. An elastic diaphragm and an elastic member are provided between the elastic pressing head and the base body. The elastic member applies an elastic acting force to the elastic pressing head to make it tend to move to the first position. A water passing cavity is defined between the elastic diaphragm and the base body. The first flow channel is opened on the base body, and the first flow channel is communicated with the second flow channel through the water passing cavity.

[0018] The urinal according to the second aspect embodiment of the present invention includes a flushing induction device.

[0019] The urinal according to the embodiment of the present invention has at least the following beneficial effects: The multi-degree-of-freedom connection of the flushing induction device with the water inlet pipe and the water outlet pipe is realized through the flexible connection, greatly reducing the installation difficulty and effectively solving the problem that the installation cannot be carried out due to installation environment limitations or size deviations.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 is a partial structural schematic diagram of the flushing induction device;

[0023] Figure 2 is Figure 1 the structural exploded view of

[0024] Figure 3 is the structural schematic diagram of the flexible connection;

[0025] Figure 4 is the cross-sectional view of the water passing pipe in the top view direction;

[0026] Figure 5 is Figure 1 the cross-sectional view of

[0027] Figure 6 is the structural schematic diagram of the elastic pressing head;

[0028] Figure 7 is Figure 1Structural schematic diagram of assembling water inlet pipe and water outlet pipe;

[0029] Figure 8 yes Figure 7 Schematic diagram of the structure assembled on the fixing frame and control box.

[0030] Reference numerals: water pipe 100; water inlet section 110; water outlet section 120; water outlet 130; solenoid valve assembly 200; solenoid valve body 210; water pressure self-compensation mechanism 220; first flow channel 221; spring pressure head 230; second flow channel 231; shaft 240; water hole 241; first shaft section 242; second shaft section 243; elastic ring 250; base 260; water chamber 261; elastic diaphragm 270 ; Elastic member 280; Connecting assembly 300; Flexible connection 310; Slot 311; First tube body 312; Second tube body 313; Adapter 314; Fixing plate 315; Mounting hole 316; Connecting seat 320; Insertion cavity 321; Through groove 322; Fastener 330; Clamp arm 331; Sealing ring 400; Water inlet pipe 510; Water outlet pipe 520; Fixing bracket 610; Control box 620; Sensor module 630. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, 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 be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The present invention relates to a flushing sensing device, comprising a water pipe 100 and a connecting assembly 300.

[0033] like Figure 1 and Figure 2 As shown, a solenoid valve assembly 200 is installed on the water pipe 100, and the solenoid valve assembly 200 controls the opening and closing of the water pipe 100. The solenoid valve assembly 200 works according to the sensing module 630 on the flushing sensing device. The connecting assembly 300 includes a soft connection 310, a connecting seat 320 and a fastener 330. The soft connection 310 is a flexible pipe. One end of the soft connection 310 is inserted into the connecting seat 320, and the soft connection 310 and the connecting seat 320 are fastened and fixed by the fastener 330. The connecting assemblies 300 are installed on both ends of the water pipe 100, and the connecting assemblies 300 are connected to the water pipe 100 through the soft connection 310. In actual use, the flushing sensing device is applied to the urinal. As shown Figure 7As shown in the figure, the external water inlet pipe 510 is connected to the fixed seat of one of the connecting components 300. The fixed seat and the water inlet pipe 510 can be connected by means of threads or the like. The fixed seat connects the water inlet pipe 510 to the corresponding flexible connection 310. The water inlet pipe 510 is connected to the tap water pipeline. The external water outlet pipe 520 is connected to the fixed seat of the other connecting component 300. The fixed seat and the water outlet pipe 520 can be connected by means of threads or the like. The fixed seat connects the water outlet pipe 520 to the corresponding flexible connection 310. The water outlet pipe 520 is connected to the flushing pipeline of the urinal. Tap water is discharged into the urinal through the water inlet pipe 510, the connecting component 300, the water passing pipe 100, the connecting component 300, and the water outlet pipe 520 in sequence. During the installation process, the water inlet pipe 510 and the water outlet pipe 520 can be installed by embedding them in the wall or the like. The water inlet pipe 510 does not move relative to the tap water pipeline, and the water outlet pipe 520 does not move relative to the urinal. The flexible connection 310 realizes the multi-degree-of-freedom connection between the flushing induction device and the water inlet pipe 510 and the water outlet pipe 520, greatly reducing the installation difficulty and effectively solving the problem that installation cannot be carried out due to installation environment restrictions or dimensional deviations.

[0034] In one embodiment, as Figure 1 、 Figure 2 and Figure 3 shown, the connecting seat 320 can be set as a cylindrical structure, and the inside of the connecting seat 320 is hollow to form an insertion cavity 321. Both ends of the insertion cavity 321 are open. A through groove 322 is provided on the side wall of the connecting seat 320, and the through groove 322 communicates with the insertion cavity 321. A clamping groove 311 is provided on the outer wall of the flexible connection 310, and the clamping groove 311 extends in a ring shape along the circumference of the outer wall of the flexible connection 310. A part of the flexible connection 310 is inserted into the insertion cavity 321, and after insertion, the position of the clamping groove 311 is opposite to that of the through groove 322. The fastener 330 can be set as a U-shaped structure, and the fastener 330 is provided with clamping arms 331. The fastener 330 is sleeved on the connecting seat 320, the clamping arms 331 pass through the through groove 322, and the clamping arms 331 are simultaneously clamped onto the clamping groove 311, thereby fixing the connecting seat 320 and the flexible connection 310 axially. Two through grooves 322 can be provided on the connecting seat 320, and two clamping arms 331 are correspondingly provided on the fastener 330. The two clamping arms 331 pass through the two through grooves 322 respectively and are clamped into the clamping groove 311. The two clamping arms 331 also have a certain radial clamping force on the clamping groove 311, thereby preventing the fastener 330 from disengaging from the connecting seat 320. During maintenance, only the fastener 330 needs to be loaded and unloaded, and the water inlet pipe 510 and the water outlet pipe 520 can be quickly loaded and unloaded relative to the flushing induction device without removing the ceramic body of the urinal, and after-sales maintenance is more convenient.

[0035] Furthermore, as Figure 3As shown in the figure, a plurality of clamping grooves 311 are provided on the flexible connection 310. The clamping grooves 311 are sequentially distributed along the axial direction of the flexible connection 310. A sealing ring 400 is sleeved on a part of the clamping grooves 311. The sealing ring 400 is inserted into the connection seat 320 or the water pipe 100 along with the flexible connection 310. The sealing ring 400 abuts against the inner wall of the connection seat 320 or the water pipe 100, so as to seal the connection between the connection seat 320 and the flexible connection 310 or between the water pipe 100 and the flexible connection 310, thereby preventing water leakage. At least one clamping groove 311 that is not sleeved with the sealing ring 400 is reserved on the part of the flexible connection 310 inserted into the connection seat 320, which is used to cooperate with the fastener 330 for clamping and fixing.

[0036] In one embodiment, as Figure 3 shown, the flexible connection 310 includes a first pipe body 312, a second pipe body 313 and a transition part 314. The first pipe body 312 and the pipe body are formed at both ends of the transition part 314. The first pipe body 312 and the second pipe body 313 are flexible pipe bodies. One of the first pipe body 312 and the second pipe body 313 is connected to the connection seat 320, and the other is connected to the end of the water pipe 100. The transition part 314 serves as an intermediate connection component between the first pipe body 312 and the second pipe body 313. The first pipe body 312 and the second pipe body 313 are communicated through the transition part 314. At the same time, the transition part 314 can be made of a hard material and is difficult to deform. The transition part 314 is set according to the relative installation positions of the water pipe 100, the water inlet pipe 510 and the water outlet pipe 520. For example, if the installation orientation of the water pipe 100 is horizontal and the installation orientations of the water inlet pipe 510 and the water outlet pipe 520 are vertical, the transition part 314 is set to be L-shaped, so that the first pipe body 312 and the second pipe body 313 are distributed in an L-shape, so as to adapt to the relative installation positions of the water pipe 100, the water inlet pipe 510 and the water outlet pipe 520. At the same time, the flexible connection 310 can be fixed to the installation environment through the transition part 314. For example, a fixing plate 315 extends from the transition part 314, and mounting holes 316 are provided in the fixing plate 315. Screws are used to pass through the mounting holes 316 to fix the flexible connection 310 in the installation environment.

[0037] In some embodiments of the present invention, as Figure 8As shown, the flushing induction device further includes a fixing bracket 610 and a control box 620. The water passing pipe 100, the solenoid valve assembly 200 and the connecting assembly 300 are installed on the control box 620, and an induction module 630 is further provided on the control box 620. The induction module 630 controls the operation of the solenoid valve assembly 200 by sensing the human body. The control box 620 and the fixing bracket 610 do not need to be embedded in the installation environment. During installation, the fixing bracket 610 is installed on the plane of the ceramic body of the urinal, and then the control box 620 is quickly connected to the fixing bracket 610, and the control box 620 and the fixing bracket 610 are buckled and fixed to each other. It can solve most of the installation problems that cannot be installed due to insufficient wall space size and the inner cavity space of the ceramic body, which cause inconvenience in installation.

[0038] In some embodiments of the present invention, such as Figure 2 and Figure 5As shown, the solenoid valve assembly 200 includes a solenoid valve body 210 and a water pressure self-compensation mechanism 220. The water pipe 100 includes a water inlet section 110 and a water outlet section 120 that are connected in sequence. A water passing port 130 is provided between the water inlet section 110 and the water outlet section 120. The water inlet section 110 and the water outlet section 120 are connected through the water passing port 130. The water pressure self-compensation mechanism 220 is installed on the water pipe 100. The water pressure self-compensation mechanism 220 includes a spring pressing head 230 and a first flow channel 221. The spring pressing head 230 moves elastically on the water pressure self-compensation mechanism 220, and the moving position has a first position and a second position relative to the water passing port 130. Without being affected by water pressure, the spring pressing head 230 tends to elastically move to the first position. When the spring pressing head 230 is in the first position, the spring pressing head 230 blocks the water passing port 130. When water enters the water inlet section 110, the spring pressing head 230 can move to the second position under the action of the water pressure in the water inlet section 110. When in the second position, the spring pressing head 230 leaves the water passing port 130. A second flow channel 231 is provided on the spring pressing head 230. The water inlet section 110, the second flow channel 231, the first flow channel 221, and the water outlet section 120 are connected in sequence. The solenoid valve body 210 is installed on the water pressure self-compensation mechanism 220, and the opening and closing of the first flow channel 221 are controlled by the solenoid valve body 210. Under normal conditions, the solenoid valve body 210 shuts off the first flow channel 221. At this time, the water in the water inlet section 110 enters the first flow channel 221 through the second flow channel 231, and the spring pressing head 230 cooperates with the water pressure on the side where the first flow channel 221 is located to remain in the first position and block the water passing port 130. When flushing is required, the solenoid valve body 210 is opened, the first flow channel 221 is opened, and the water in the first flow channel 221 is discharged and depressurized towards the water outlet section 120. The spring pressing head 230 moves to the second position under the action of the water pressure in the water inlet section 110. The water passing port 130 is opened, and the water in the water inlet section 110 quickly flows through the water passing port 130 into the water outlet section 120, and then is discharged for flushing through the connecting assembly 300 and the water outlet pipe 520. After flushing for a period of time, the solenoid valve body 210 shuts off the first flow channel 221. The first flow channel 221 gradually replenishes water and increases pressure again through the second flow channel 231. When the water pressure in the water inlet section 110 is high, the water replenishing speed of the first flow channel 221 is fast, and the spring pressing head 230 is pushed to quickly move to the first position. When the water pressure in the water inlet section 110 is low, the water replenishing speed of the first flow channel 221 is relatively slow, and the time taken to move to the first position becomes longer, thereby increasing the flushing time.

[0039] Further, as Figure 5 and Figure 6As shown, the pressing head 230 includes a shaft body 240. A second flow channel 231 is axially formed in the shaft body 240 along the axial direction of the shaft body 240. The shaft body 240 is radially provided with water passing holes 241. The second flow channel 231 is communicated with the water inlet section 110 through the water passing holes 241. An elastic ring 250 is sleeved on the shaft body 240. The elastic ring 250 is aligned with the water passing holes 241, and the elastic ring 250 blocks the water passing holes 241. The elastic ring 250 will undergo elastic deformation according to the water pressure in the water inlet section 110, and the size of the elastic deformation will change the blocking area of the water passing holes 241. When the water pressure in the water inlet section 110 is high, the deformation amount of the elastic ring 250 is large, reducing the blocking area of the water passing holes 241, so that water can quickly pass through the water passing holes 241 and the first flow channel 221 to supplement the second flow channel 231, thereby accelerating the moving speed of the pressing head 230 towards the first position. When the water pressure in the water inlet section 110 is relatively low, the deformation amount of the elastic ring 250 is small, and the blocking area of the elastic ring 250 for the water passing holes 241 is small, thereby slowing down the supplement speed of water passing through the water passing holes 241 and the first flow channel 221 to the second flow channel 231, and further slowing down the moving speed of the pressing head 230 towards the first position, and lengthening the drainage time of the water inlet section 110 passing through the water passing port 130 to the water outlet section 120.

[0040] Based on the above embodiments, the shaft body 240 includes a first shaft section 242 and a second shaft section 243 which are coaxially arranged. The outer diameter of the first shaft section 242 is smaller than the outer diameter of the second shaft section 243. The water passing holes 241 are formed in the first shaft section 242, and the elastic ring 250 is sleeved on the first shaft section 242 and abuts against the second shaft section 243. The water in the water inlet section 110 acts on the elastic ring 250, squeezing the elastic ring 250 towards the direction of the second shaft section 243, and the end of the second shaft section 243 supports the elastic ring 250, so that the elastic ring 250 deforms under different water pressures.

[0041] Further, the water pressure self-compensation mechanism 220 further includes a base body 260, which can be configured as a box-like structure. An elastic diaphragm 270 and an elastic member 280 are provided between the elastic pressing head 230 and the base body 260. The elastic member 280 can be a spring. The elastic member 280 exerts an elastic acting force on the elastic pressing head 230 to make it tend to move to the first position. A water passing cavity 261 is defined between the elastic diaphragm 270 and the base body 260. The elastic member 280 can be located in the water passing cavity 261. One end of the elastic member 280 abuts against the base body 260, and the other end abuts against the elastic pressing head 230. A first flow channel 221 is formed on the base body 260. The first flow channel 221 communicates with the second flow channel 231 through the water passing cavity 261. Water is stored in the water passing cavity 261 through the second flow channel 231, increasing the water storage amount on the side of the first flow channel 221 of the elastic pressing head 230. When the elastic pressing head 230 moves, the elastic diaphragm 270 will deform with the elastic pressing head 230. When the elastic pressing head 230 moves from the second position to the first position, while the elastic diaphragm 270 deforms, the volume of the water passing cavity 261 becomes larger.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of this specification, the description of reference terms such as "some specific embodiments" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flushing sensing device, characterized in that: include: A water pipe (100), wherein the water pipe (100) is provided with a solenoid valve assembly (200) for controlling the opening and closing of the water pipe; A connection assembly (300) comprises a flexible connection (310), a connection seat (320) and a fastener (330); one end of the flexible connection (310) is inserted into the connection seat (320); the fastener (330) clamps and fixes the flexible connection (310) and the connection seat (320); the connection seat (320) is used to connect an external water pipe to the flexible connection (310); both ends of the water pipe (100) are installed with the connection assembly (300); and the connection assembly (300) is connected to the water pipe (100) via the flexible connection (310).

2. The flushing sensor device according to claim 1, characterized in that: An inserting cavity (321) is formed inside the connecting seat (320), and both ends of the inserting cavity (321) are open. A through groove (322) connected to the inserting cavity (321) is formed on the side wall of the connecting seat (320). An annularly extending clamping groove (311) is provided on the outer wall of the flexible connection (310). A part of the flexible connection (310) is inserted into the inserting cavity (321), and the clamping groove (311) is opposite to the through groove (322). The fastener (330) is provided with a clamping arm (331), and the clamping arm (331) is passed through the through groove (322) and clamped on the clamping groove (311).

3. The flushing sensing device according to claim 2, characterized in that: The flexible connection (310) is provided with a plurality of the slots (311), wherein a sealing ring (400) is sleeved on a portion of the slots (311), and the sealing ring (400) is used to seal the connection between the connection seat (320) and the flexible connection (310) or between the water pipe (100) and the flexible connection (310).

4. The flushing sensing device according to claim 1 or 2, characterized in that: The soft connection (310) comprises a first tube body (312), a second tube body (313) and a transition portion (314); the first tube body (312) and the second tube body (313) are formed at two ends of the transition portion (314); the first tube body (312) and the second tube body (313) are flexible tube bodies; one of the first tube body (312) and the second tube body (313) is connected to the connection seat (320), and the other is connected to an end of the water pipe (100).

5. The flushing sensor device according to claim 1, characterized in that: It also comprises a fixing frame (610) and a control box (620), the water pipe (100), the solenoid valve assembly (200) and the connection assembly (300) being mounted on the control box (620), the control box (620) also being provided with a sensing module (630), and the fixing frame (610) and the control box (620) being connected in a snap-on manner.

6. The flushing sensor device according to claim 1, characterized in that: The solenoid valve assembly (200) comprises a solenoid valve body (210) and a water pressure self-compensation mechanism (220); the water pipe (100) comprises a water inlet section (110) and a water outlet section (120) which are connected in sequence; a water outlet (130) is provided between the water inlet section (110) and the water outlet section (120); the water pressure self-compensation mechanism (220) is installed on the water pipe (100); the water pressure self-compensation mechanism (220) comprises a spring-loaded head (230) and a first flow channel (221); the spring-loaded head (230) can be positioned relative to the water outlet (130) at a first position and a second position. The spring-loaded head (230) moves between two positions, the spring-loaded head (230) tends to elastically move to the first position to block the water outlet (130), and the spring-loaded head (230) can move to the second position to leave the water outlet (130) after being acted upon by the water pressure of the water inlet section (110), and a second flow channel (231) is provided on the spring-loaded head (230), and the water inlet section (110), the second flow channel (231), the first flow channel (221) and the water outlet section (120) are connected in sequence, and the solenoid valve body (210) is used to control the opening and closing of the first flow channel (221).

7. The flushing sensing device according to claim 6, characterized in that: The spring-loaded head (230) comprises a shaft body (240); the second flow channel (231) is opened in the shaft body (240) along the axial direction of the shaft body (240); the shaft body (240) is provided with a water passage hole (241) along the radial direction; the second flow channel (231) is communicated with the water inlet section (110) through the water passage hole (241); an elastic ring (250) is sleeved on the shaft body (240); the elastic ring (250) is aligned with the water passage hole (241); the elastic ring (250) is elastically deformed under the water pressure of the water inlet section (110) to change the shielding area of ​​the water passage hole (241).

8. The flushing sensing device according to claim 7, characterized in that: The shaft body (240) comprises a first shaft segment (242) and a second shaft segment (243) which are coaxially arranged, the outer diameter of the first shaft segment (242) being smaller than the outer diameter of the second shaft segment (243), the water passage hole (241) being provided on the first shaft segment (242), and the elastic ring (250) being sleeved on the first shaft segment (242) and abutting against the second shaft segment (243).

9. The flushing sensor device according to any one of claims 6 to 8, characterized in that: The water pressure self-compensation mechanism (220) further comprises a base (260); an elastic diaphragm (270) and an elastic member (280) are provided between the spring-loaded head (230) and the base (260); the elastic member (280) applies an elastic force to the spring-loaded head (230) so as to cause the spring-loaded head (230) to move to the first position; a water passage cavity (261) is defined between the elastic diaphragm (270) and the base (260); the first flow channel (221) is provided on the base (260); and the first flow channel (221) is connected to the second flow channel (231) through the water passage cavity (261).

10. A urinal, characterized in that: A flushing sensing device comprising any one of claims 1 to 9.

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