JP2019190195A - Flush valve device - Google Patents

Abstract

To provide a flush valve device capable of suppressing accumulation of dust at a portion to which a sensor window is attached in a configuration in which the sensor window is provided on an upper surface of a cover member.SOLUTION: The flush valve device 1 includes: a sensor 421 that emits light upward; a cylindrical cover body 51 that is disposed so as to cover the sensor 421, and includes an upper surface plate 511 that is disposed above the sensor 421; and an upper surface panel 52 that functions as a sensor window of the sensor 421 and is arranged to cover the entire upper surface 511a of the upper surface plate 511 of the cover main body 51.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a flush valve device.

  2. Description of the Related Art Conventionally, a flush valve device in which a hand-holding sensor (sensor) is disposed on the upper side inside a cover member and a sensor window is provided on the upper surface of the cover member is known (see, for example, Patent Document 1). In the flash valve device described in Patent Document 1, a sensor window is provided on a part of the upper surface of the cover member.

JP 2006-283353 A

  In a flush valve device having a sensor window on a part of the upper surface of the cover member, dust may accumulate between the sensor window and the upper surface of the cover member in a portion of the upper surface of the cover member to which the sensor window is attached.

  An object of the present invention is to provide a flash valve device capable of suppressing dust from being collected in a portion where a sensor window is attached in a configuration in which a sensor window is provided on an upper surface of a cover member.

  The present invention includes a sensor that emits light upward (for example, a hand-holding sensor 421 described later) and a cylindrical cover main body (for example, a cover main body 51 described later) disposed so as to cover the sensor. A cover body having an upper surface plate disposed above the sensor, and a function as a sensor window of the sensor, and an upper surface (for example, an upper surface plate 511 described later) Further, the present invention relates to a flash valve device (for example, a later-described flash valve device 1) including an upper surface panel (for example, a later-described sensor window top plate 52) disposed so as to cover the entire upper surface 511a) to be described later.

  Further, it is preferable that an engaging portion (for example, a lower surface engaging portion 522 described later) that engages with the cover main body is formed on a lower surface (for example, a lower surface 52b described later) of the upper surface panel.

  In addition, a hole (for example, a claw engagement groove hole 516 described later) is formed in the upper surface plate of the cover body, and the engagement portion extends downward from the lower surface of the upper panel through the hole. An extension part (for example, an extension part 522a to be described later) and a claw (for example, a lower end member to be described later) that is formed at the lower end of the extension part and hooks to the lower surface (for example, the lower surface 511b to be described later) of the upper surface plate of the cover body. A claw portion 522b).

  In addition, a display unit (for example, operation information 521a to be described later) is provided on the upper surface (for example, an upper surface 52a to be described later) of the upper panel, and the display unit is a light emitting unit ( For example, it is preferable that the light emitting element 421a and a light receiving unit (for example, a light receiving element 421b to be described later) are disposed at positions shifted from each other.

  ADVANTAGE OF THE INVENTION According to this invention, in the structure which provides a sensor window on the upper surface of a cover member, the flash valve apparatus which can suppress that dust accumulates in the part which attaches a sensor window can be provided.

1 is an overall perspective view of a flash valve device according to an embodiment of the present invention. It is a perspective view which shows the state which removed the cover member from the flash valve apparatus of this embodiment. It is a perspective view which shows a bracket and a controller unit. It is a perspective view which shows the state which removed the sensor window top plate from the cover member. It is a front view of the sensor window top plate showing the positional relationship between the operation information on the top surface of the sensor window top plate and the hand-holding sensor. It is a perspective view which shows the lower surface engaging part of a sensor window top plate. It is AA sectional view taken on the line of FIG. 5, Comprising: It is sectional drawing which shows the engagement state of a cover member and a sensor window top plate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment. FIG. 1 is an overall perspective view of a flash valve device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state where the cover member 5 is removed from the flash valve device 1 of the present embodiment. FIG. 3 is a perspective view showing the bracket 3 and the controller unit 4. FIG. 4 is a perspective view showing a state where the sensor window top plate 52 is removed from the cover member 5. FIG. 5 is a front view of the sensor window top plate 52 showing the positional relationship between the operation information 521a on the top surface 52a of the sensor window top plate 52 and the hand-holding sensor 421. FIG. 6 is a perspective view showing the lower surface engaging portion 522 of the sensor window top plate 52. FIG. 7 is a cross-sectional view taken along line AA in FIG. 5, and is a cross-sectional view showing an engagement state between the cover member 5 and the sensor window top plate 52.

  In the present embodiment, when facing the sensor window 54 provided on the front surface of the cover body 51 of the flash valve device 1 in FIGS. 1 and 2, the front-rear direction of the flash valve device 1 is also referred to as the front-rear direction. . In the front-rear direction, the front side is also referred to as the front side, and the back side is also referred to as the rear side. Further, when facing the sensor window 54 provided on the front surface of the cover main body 51 of the flash valve device 1 in FIG. 1, the left and right direction of the flash valve device 1 is also referred to as the left and right direction. In the left-right direction, when facing the flash valve device 1 in FIG. 1, the left front side is also referred to as the left side (one side), and the right back side is also referred to as the right side (the other side).

  As shown in FIGS. 1 and 2, the flush valve device 1 includes a valve unit 2, a bracket 3, a controller unit 4, and a cover member 5. The valve unit 2, the bracket 3 and the controller unit 4 are arranged inside the cover member 5 in this order from the lower side to the upper side.

  As shown in FIG. 2, the valve unit 2 is disposed on the lower side inside the cover member 5. The valve unit 2 includes a valve body 21, a water supply side connection port 22 connected to the water stop cock 12 through the joint pipe 11, an operation button 23, and a drain side connection port 24. A bracket 3 (described later) is connected to the flange portion 25 on the upper side of the valve unit 2.

  A U-shaped bottom plate 26 is fixed to the bottom of the valve unit 2. The bottom plate 26 includes a main body part 261 that closes an opening on the bottom surface of the cover member 5 (described later) inside the cover member 5, and standing parts 262 that are formed at both ends in the left-right direction of the main body part 261.

  The water supply side connection port 22 is formed in the cylinder shape which protrudes to the side from the left side surface, and the joint pipe 11 is connected. The joint pipe 11 extends to the left from the water supply side connection port 22 on the left side surface of the valve unit 2, and a stop cock 12 is connected to the joint pipe 11.

  The operation button 23 is a push button type button, and protrudes rightward from the right side surface of the flash valve device 1. The operation button 23 is pushed leftward in an emergency such as a power failure, thereby opening the valve portion of the valve unit 2 and causing the toilet flushing water to flow out.

  The drain side connection port 24 is provided at the bottom of the valve unit 2. The drainage side connection port 24 is a connection port for drainage piping, and is connected to the drainage side connection port 24 in a state in which the joint pipe 13 constituting a part of the drainage piping protrudes downward.

  As shown in FIG. 2, the bracket 3 is disposed between the valve unit 2 and the controller unit 4, connected to the flange portion 25 on the upper side of the valve unit 2, and supports the controller unit 4. As shown in FIG. 3, the bracket 3 protrudes horizontally laterally at a lower portion of the bracket body 31, a pair of extending engagement portions 32 extending upward from the upper surface of the bracket body 31, and the bracket body 31. Four lower fixing protruding plate portions 33, a rising pressing portion 34 formed on the left side (one side) in the left-right direction, and a rising fixing portion 35 formed on the right side (the other side) in the left-right direction. Have.

  As shown in FIG. 3, the bracket body 31 includes a peripheral wall portion 311 and an upper surface portion 312 having an opening 312a. On the upper side of the bracket body 31, the controller unit 4 is disposed in a state where the controller unit 4 is engaged with the pair of extending engagement portions 32.

  As shown in FIG. 3, the pair of extending engagement portions 32 are arranged on the front side of the upper surface portion 312 of the bracket body 31 so as to be separated from the end portions in the left-right direction. Each of the pair of extending engaging portions 32 includes an extending portion 321 extending upward from the upper surface of the bracket body 31 and an engaging claw portion 322 formed at the upper end of the extending portion 321. The engaging claw portion 322 is formed at the upper end of the extending portion 321 so as to incline toward the inside as it goes from the upper side to the lower side and protrudes inward. A pair of engaging grooves 411 a (described later) of the controller case 411 of the controller main body 41 of the controller unit 4 are engaged with the extended engaging portion 32.

  As shown in FIG. 3, the four lower fixing protruding plate portions 33 protrude laterally at the lower end portion of the bracket 3. Each of the four lower fixing protruding plate portions 33 is provided with a U-shaped cutout 331. Each U-shaped notch 331 is formed so as to open rightward. A fixing screw 251 (see FIG. 2) that is screwed into the flange portion 25 formed on the upper side of the valve unit 2 (see FIG. 2) is inserted into the notch 331. As shown in FIG. 2, in the bracket 3, the shaft portion of the fixing screw 251 is inserted into the U-shaped notch 331, and in this state, the fixing screw 251 is tightened downward on the flange portion 25 (see FIG. 2). Is fixed to the upper side of the valve unit 2.

  As shown in FIG. 3, the rising pressing portion 34 rises from the upper surface of the bracket body 31 on the left side in the left-right direction of the bracket 3. A rubber material 341 (buffer member) is wound around the rising pressing portion 34 in the horizontal direction. The rising pressing portion 34 is pressed against the inner surface of the left side plate of the cover member 5 when the cover member 5 is covered, and the rubber material 341 is pressed against the inner surface of the left side plate of the cover member 5.

  The rising fixing portion 35 rises from the upper surface portion 312 of the bracket body 31 on the right side of the bracket 3 in the left-right direction. The rising fixing portion 35 is formed with a screw hole 351 penetrating in the left-right direction.

  In a state where the cover member 5 is covered, when the cover member 5 is fixed to the bracket 3, the rubber material 341 wound around the rising pressing portion 34 is pressed against the inner surface of the left side plate of the cover member 5. Then, the fixing screw 53 is inserted into a screw insertion hole 515 (see FIG. 2, described later) formed on the left side surface of the cover member 5 and screwed into the screw hole 351 of the rising fixing portion 35 of the bracket 3. Thereby, the cover member 5 is fixed to the bracket 3.

  Thus, in the state where the cover member 5 is covered, the rubber material 341 is pressed against the left side of the cover member 5 and can be fixed by the fixing screw 53 at the fixing portion 35 on the right side of the cover member 5. The backlash of the cover member 5 can be prevented. In the present embodiment, when the cover member 5 is fixed to the bracket 3, only the right side of the cover member 5 needs to be screwed with the fixing screw 53. Workability can be improved as compared with the case of doing so. In addition, since the rising fixing portion 35 is provided on the right side of the bracket 3, a right-handed worker can easily perform the fixing operation of the fixing screw 53.

  In the bracket 3, the rising pressing portion 34 and the rising fixing portion 35 may be provided on the opposite sides in the left-right direction with respect to the present embodiment. That is, in the bracket 3, the rising pressing portion 34 may be provided on the right side, and the rising fixing portion 35 may be provided on the left side.

  As shown in FIG. 3, the controller unit 4 is disposed on the upper side inside the cover member 5. The controller unit 4 is attached to the upper side of the bracket 3. The controller unit 4 includes a controller main body 41 and a sensor unit 42. The sensor unit 42 is placed on the top of the controller main body 41, and the controller main body 41 is supported by the bracket 3.

  The controller main body 41 has a controller case 411, and a human body detection sensor 412 for detecting a front human body and a control unit (not shown) are arranged inside the controller case 411. The human body detection sensor 412 detects a human body (user) on the front side of the flash valve device 1. The control unit determines whether it is a stool or a urine according to the length of the detection time detected by the human body detection sensor 412, and controls the outflow amount of the toilet flushing water according to this.

  A pair of engaging grooves 411a are formed on the side surfaces of the controller case 411 on both sides in the left-right direction. The pair of engaging grooves 411a are formed in a concave groove shape extending in the front-rear direction and recessed on both side surfaces of the controller case 411 in the left-right direction. When the controller main body 41 is attached to the bracket 3, the engaging claws 322 of the pair of extending engaging portions 32 of the bracket 3 are engaged with the pair of engaging grooves 411 a.

  The sensor unit 42 is configured separately from the controller main body 41 and is supported by a mounting plate 45 fixed to the upper part of the controller main body 41. As shown in FIG. 3, the sensor unit 42 has a sensor case body 425. Inside the sensor case body 425, a hand-holding sensor 421 (sensor) is disposed. The hand-holding sensor 421 is disposed on the upper side inside the cover main body 51.

  The mounting plate 45 has a base end fixed to the upper portion of the controller main body 41 by a fixing screw 451, and a sensor unit side screw 452 having a long shaft portion is screwed to the other end.

  The sensor unit side screw 452 has a head portion 452a at the upper end, and a shaft portion 452b extending downward from the head portion 452a protrudes laterally from both sides of the sensor unit 42 in the lateral direction. It is inserted through the insertion hole. A coil spring 453 is inserted through the shaft 452b of the sensor unit side screw 452. The coil spring 453 exerts an upward biasing force with respect to the sensor unit 42 between the boss portion 42 a of the sensor unit 42 and the mounting plate 45. The sensor unit 42 is elastically supported from below by a coil spring 453.

  The sensor case body 425 includes a sensor case main body 425a and a sensor case protruding portion 425b protruding from the upper surface of the sensor case main body 425a. The sensor case protruding portion 425b is disposed at a position shifted to the left in the left-right direction of the sensor case body 425.

  In the sensor case protruding portion 425b, a portion corresponding to the hand-holding sensor 421 is made of a light-transmitting material, and the upper surface thereof is inclined downward toward the center in the left-right direction of the flash valve device 1. It is formed in the shape of an inclined surface. Inside the sensor case projecting portion 425b, a hand-holding sensor 421 is disposed at a position shifted to the left in the left-right direction in the sensor case body 425 and is inclined along the inclination of the sensor case projecting portion 425b ( (Not shown).

  In this embodiment, the hand-holding sensor 421 has a light emitting element 421a (light emitting part) and a light receiving element 421b (light receiving part) arranged in the front-rear direction on the left side of the center in the left-right direction of the sensor window top plate 52. It is configured. The hand-holding sensor 421 is disposed with the optical axes of the light-emitting element 421a and the light-receiving element 421b constituting the hand-holding sensor 421 facing upward on the center side in the left-right direction of the sensor unit 42. The light emitting element 421a emits light upward. The light receiving element 421b receives the reflected light that is emitted to the light emitting element 421a and reflected by the hand.

  By arranging in this way, the light emitting element 421a has the operation information 521a at a position shifted to the left in the left-right direction of the sensor case body 425 from the position where the operation information 521a of the sensor window top plate 52 described later is displayed. In order to be able to irradiate light on the hand held upward, the operation information 521a is tilted so as to irradiate light obliquely upward. In addition, the light receiving element 421b can receive the reflected light reflected by the hand held above the operation information 521a so that the reflected light reflected by the hand held above the operation information 521a can be received. Be skewed.

  As shown in FIG. 2, the cover member 5 covers the valve unit 2, the bracket 3, and the controller unit 4. As illustrated in FIG. 4, the cover member 5 includes a cover body 51 and a sensor window top plate 52 (upper panel).

  As shown in FIG. 4, the cover main body 51 has a substantially square cylindrical shape having an upper surface plate 511 and having an open bottom surface. The upper surface plate 511 is formed in a plate shape, is formed in a substantially rectangular shape in plan view (when viewed from above), and has four corners formed in an arc shape. The cover body 51 is disposed so as to cover the hand-holding sensor 421. The top plate 511 is disposed above the hand-holding sensor 421.

  As shown in FIG. 2, the cover main body 51 covers the valve unit 2, the bracket 3, and the controller unit 4 from above, and covers the entire valve unit 2, bracket 3, and controller unit 4 from the outside. Yes.

  2 and 4, the cover main body 51 includes a front opening 512 formed on the front surface, an upper opening 513 formed on the upper plate 511, and a pair of notches formed on the left and right side surfaces. 514, a screw insertion hole 515 formed on the right side surface in the left-right direction, and four claw engagement groove holes 516 (holes) formed in the upper surface plate 511.

As shown in FIG. 4, the front opening 512 opens at a position corresponding to the human body detection sensor 412 (see FIG. 3) on the front surface of the cover main body 51. The front opening 512 has a sensor window 54. It is attached.
The upper surface opening 513 opens at a position corresponding to the hand-holding sensor 421 (see FIG. 3) on the upper surface plate 511 of the cover main body 51.

  As shown in FIG. 2, the pair of notches 514 are formed at the lower ends of the left and right side surfaces of the cover body 51 by being cut out in a U shape.

  As shown in FIG. 2, the screw insertion hole 515 is formed through the right side surface in the left-right direction. When the cover member 5 is fixed to the bracket 3 in a state where the cover member 5 is covered, the screw insertion hole 515 is inserted with a fixing screw 53 that is screwed into the screw hole 351 of the rising fixing portion 35 of the bracket 3. The That is, as shown in FIG. 2, the cover main body 51 is fixed to the bracket 3 by the fixing screw 53 in the screw insertion hole 515 on the right side surface in the left-right direction.

  As shown in FIG. 4, the four claw engaging grooves 516 are formed at four positions spaced apart from each other on the upper and lower sides of the upper surface plate 511 of the cover main body 51, and are formed to extend a predetermined length in the front and rear directions. The upper surface plate 511 of 51 is penetrated in groove shape. Four claw engaging grooves 516 engage with four lower surface engaging portions 522 (described later) formed on the lower surface 52 b of the sensor window top surface plate 52.

  As shown in FIG. 4, the sensor window top surface plate 52 is attached to the upper surface 511 a of the upper surface plate 511 of the cover body 51 at the uppermost portion of the cover member 5. As shown in FIG. 5, the sensor window top plate 52 is formed in substantially the same shape as the upper surface 511 a of the upper surface plate 511 of the cover body 51 in plan view (when viewed from above). The sensor window top plate 52 is formed in a plate shape, is formed in a substantially rectangular shape in a plan view (when viewed from above), and has four corners in an arc shape. The sensor window top plate 52 has a function as a sensor window of the hand-holding sensor 421.

  The sensor window top surface plate 52 is disposed so as to cover the entire upper surface 511 a of the upper surface plate 511 of the cover body 51. That is, when the sensor window top plate 52 is attached to the upper surface 511a of the upper surface plate 511 of the cover main body 51, the upper surface 511a of the cover main body 51 cannot be seen from the upper side, and the upper surface plate 511 of the cover main body 51 is visible. The entire upper surface 511a of the sensor window is covered with the sensor window top plate 52.

  As shown in FIG. 6, four lower surface engaging portions 522 (engaging portions) projecting downward are formed on the lower surface 52 b of the sensor window top surface plate 52. The four lower surface engaging portions 522 are formed at four positions on the lower surface 52 b of the sensor window top surface plate 52 that are spaced apart from each other on the left and right and front and rear at positions corresponding to the four claw engaging grooves 516 of the upper surface plate 511 of the cover body 51. The The four lower surface engaging portions 522 include an extending portion 522a (extending portion) that extends downward from the lower surface 52b of the sensor window top surface plate 52 through the claw engaging groove hole 516, and an extending portion 522a. A lower end engaging claw portion 522b (claw) formed at the lower end. The lower end engaging claw portion 522b protrudes to the center side in the left-right direction of the sensor window top surface plate 52 at the lower end of the extending portion 522a. The lower end engaging claw portion 522 b is hooked on the lower surface 511 b of the upper surface plate 511 of the cover main body 51. As shown in FIG. 7, the four lower surface engaging portions 522 are engaged with the four claw engaging grooves 516 when the sensor window top surface plate 52 is attached to the upper surface plate 511 of the cover main body 51.

  As shown in FIG. 5, an operation for guiding the user's hand (object) to a predetermined position at the approximate center in the front-rear direction and the front side at the approximate center in the left-right direction of the upper surface 52a of the sensor window top panel 52. Information 521a (display unit) is provided. The operation information 521a is adjacent to the light emitting element 421a (light emitting unit) and the light receiving element 421b (light receiving unit) constituting the hand-holding sensor 421 and is viewed in plan (when the sensor window top plate 52 is viewed from above). ) It is arranged at a position shifted to the right side with respect to the hand-holding sensor 421 (light emitting element 421a and light receiving element 421b). Specifically, the operation information 521a is arranged at a position shifted from the light emitting element 421a when viewed in the emission direction of the light emitting element 421a and viewed in the reflection direction when the reflected light returns to the light receiving element 421b. In such a case, the light receiving element 421b is disposed at a shifted position.

  In the present embodiment, as the operation information 521a, for example, pictograms (pictograms) indicating a flow of water (vortex) and characters “Place your hand over the sensor.” Are shown. ing. In addition, characters “flow” and “Flush” are described behind the operation information 521a (upper right in the drawing of FIG. 4).

  In the flash valve device 1 configured as described above, when the user holds his hand over the operation information 521a, the emitted light emitted from the light emitting element 421a hits the user's hand (object) and is reflected. The light receiving element 421b receives the reflected light. The light receiving element 421b transmits a detection signal to a control unit (not shown) based on the reflected light. The control unit transmits an output signal to a cleaning mechanism (not shown). The cleaning mechanism operates a pump or the like based on the output signal and discharges cleaning water.

  Further, when the user leaves, the light emitted from the light emitting element 412a of the human body detection sensor 412 (see FIG. 3) hits the user and is reflected, and the light receiving element 412b of the human body detection sensor 412 is reflected by the user. The reflected light reflected upon hitting is received. The light receiving element 412b of the human body detection sensor 412 transmits a detection signal to a control unit (not shown) based on the received reflected light. The control unit transmits an output signal to a cleaning mechanism (not shown). The cleaning mechanism operates a pump or the like based on the output signal and discharges cleaning water.

  In the flash valve device 1 described above, the operation information 521a displayed on the sensor window top plate 52 disposed above the hand-holding sensor 421 is a plan view (when the sensor window top plate 52 is viewed from above). B) It is arranged at a position shifted to the right side of the hand-holding sensor 421. Therefore, since the operation information 521a is not arranged so as to overlap the hand-holding sensor 421 in a plan view (when the sensor window top plate 52 is viewed from above), the emitted light emitted from the light emitting element 421a is operated. Without being blocked by the information 521a, the emitted light reaches the user's hand (object) held over the operation information 521a. Further, since the operation information 521a is not arranged so as to overlap with the hand-holding sensor 421 in a plan view (when the sensor window top plate 52 is viewed from above), the emitted light is the user's hand (object). The reflected light that hits the light reaches the light receiving element 421b without being blocked by the operation information 521a. Therefore, the hand-holding sensor 421 can accurately detect the hand.

The flash valve device 1 according to the present embodiment described above has the following effects.
The flash valve device 1 according to the present embodiment includes a hand-holding sensor 421 that emits light upward and a cylindrical cover body 51 that is disposed so as to cover the hand-holding sensor 421. The cover main body 51 having the upper surface plate 511 disposed above the hand-holding sensor 421 and the function as a sensor window of the hand-holding sensor 421 covering the entire upper surface 511a of the upper surface plate 511 of the cover main body 51 And a sensor window top plate 52 to be arranged. Thereby, it can suppress that a dust accumulates in the part which attaches the sensor window top plate 52 which has a function as a sensor window. Further, even if the sensor window top surface plate 52 having a function as a sensor window is attached to the upper surface 511 a of the upper surface plate 511 of the cover member 5, there is a gap between the sensor window top surface plate 52 and the upper surface plate 511 of the cover body 51. Therefore, the design can be improved.

  In the present embodiment, a lower surface engaging portion 522 that engages with the cover main body 51 is formed on the lower surface 52 b of the sensor window top surface plate 52. Thus, the sensor window top plate 52 can be attached to the cover main body 51 simply by engaging the sensor window top plate 52 with the cover main body 51 at the lower surface engaging portion 522. Workability can be improved. Further, since the sensor window top plate 52 is engaged with the cover main body 51 at the lower surface engaging portion 522, it is difficult for the sensor window top plate 52 to fall off from the cover main body 51.

  In the present embodiment, the upper surface plate 511 of the cover main body 51 is formed with a claw engagement groove hole 516, and the lower surface engagement portion 522 extends from the lower surface 52 b of the sensor window top surface plate 52 to the claw engagement groove hole 516. And a lower end engaging claw portion 522b that is formed at the lower end of the extension portion 522a and hooks on the lower surface 511b of the upper surface plate 511 of the cover body 51.

  Therefore, when the sensor window top plate 52 is attached to the cover body 51, the extended portion 522a is passed through the claw engagement groove hole 516 through the lower surface 511b of the upper surface plate 511 of the cover body 51, and the lower end engagement claw portion 522b. Since the lower surface engaging portion 522 of the sensor window top plate 52 can be engaged with the cover main body 51 simply by hooking, the workability when attaching the sensor window top plate 52 to the cover main body 51 is good. Further, when the sensor window top plate 52 is removed from the cover body 51, the lower surface 511 b of the upper surface plate 511 of the cover body 51 is changed from the lower surface 511 b of the upper surface plate 511 of the cover body 51 with the cover body 51 removed from the bracket 3. The sensor window top plate 52 can be removed from the cover main body 51 simply by removing the lower end engaging claw portion 522b hooked on the cover body 51. Therefore, workability when removing the sensor window top plate 52 from the cover main body 51 is good.

  In the present embodiment, operation information 521a is provided on the upper surface 52a of the sensor window top plate 52, and the operation information 521a is a light emitting element 421a and a light receiving element 421b that constitute the hand-holding sensor 421 in a plan view. It is arranged at a position shifted with respect to. Accordingly, the operation information 521a is not arranged so as to overlap the hand-holding sensor 421 in a plan view (when the sensor window top plate 52 is viewed from the upper side), and thus the emitted light emitted from the light emitting element 421a is not Without being blocked by the operation information 521a, the emitted light reaches the user's hand (object) held above the operation information 521a, and reflected light that is reflected by the user's hand (object) is reflected. The light reaches the light receiving element 421b without being blocked by the operation information 521a. Therefore, the hand-holding sensor 421 can accurately detect the hand.

The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the sensor window top surface plate 52 is disposed so as to cover the entire upper surface 511 a of the upper surface plate 511 disposed at the highest position of the cover body 51. However, there may be a plurality of upper surfaces on the upper portion of the cover body 51 when there are steps or irregularities on the upper portion of the cover body 51. In such a case, the upper surface of the cover body is not limited to the upper surface arranged at the highest position. The upper surface of the cover main body may be an upper surface disposed above the hand-holding sensor. When the cover main body 51 has a plurality of upper surfaces, of the plurality of upper surfaces of the cover main body, above the hand-holding sensor. What is necessary is just to arrange | position so that the upper surface panel (sensor window top plate) may cover the whole upper surface of the upper surface board arrange | positioned.

1 Flash valve device 51 Cover body 52 Sensor window top plate (upper panel)
52a Upper surface 52b Lower surface 421 Hand holding sensor (sensor)
421a Light emitting element (light emitting part)
421b Light receiving element (light receiving part)
511 Upper surface plate 511a Upper surface 511b Lower surface 516 Claw engaging groove hole (hole)
521a Operation information (display unit)
522 Lower surface engaging portion (engaging portion)
522a Extension part 522b Lower end engaging claw part (claw)

Claims (4)

A sensor that emits light upward;
A cylindrical cover body disposed so as to cover the sensor, the cover body having a top plate disposed above the sensor;
A flush valve device comprising: a top panel having a function as a sensor window of the sensor and arranged to cover the entire top surface of the top plate of the cover body.   The flush valve device according to claim 1, wherein an engagement portion that engages with the cover body is formed on a lower surface of the upper panel. A hole is formed in the upper surface plate of the cover body,
The engaging portion includes: an extending portion that extends downward from the lower surface of the upper panel through the hole; and a claw that is formed at a lower end of the extending portion and is hooked on the lower surface of the upper surface plate of the cover body. The flush valve device according to claim 2, comprising: A display unit is provided on the upper surface of the upper panel,
The flash valve device according to any one of claims 1 to 3, wherein the display unit is disposed at a position shifted from a light emitting unit and a light receiving unit constituting the sensor in plan view.

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