CN220340402U

CN220340402U - Distance sensing device and bathroom product

Info

Publication number: CN220340402U
Application number: CN202320288336.7U
Authority: CN
Inventors: 梅建军; 苑芳生; 任文杰
Original assignee: Shanghai Kohler Electronics Ltd
Current assignee: Shanghai Kohler Electronics Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2024-01-12
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a distance sensing device and a bathroom product. The distance sensing device includes: the shell comprises a sensing panel, wherein the sensing panel is provided with a sensing area suitable for light transmission; the distance sensing module is arranged on the inner side of the shell body and comprises a signal transmitting and receiving surface, the signal transmitting and receiving surface is abutted to the inner surface of the sensing area, and the signal transmitting and receiving surface is provided with a transmitting end and a receiving end which are arranged at intervals; the blocking part is arranged on the induction area of the induction panel and isolates the emission area corresponding to the emission end from the receiving area corresponding to the receiving end on the induction area. The utility model solves the problem that the transmitting end and the receiving end of the distance sensing module are mutually interfered due to unreasonable structural design of the conventional distance sensing device.

Description

Distance sensing device and bathroom product

Technical Field

The utility model relates to the field of distance sensing devices, in particular to a distance sensing device for bathroom products.

Background

In the bathroom industry, the induction technology of the squatting pan mainly comprises the traditional infrared induction technology, the PSD (photoelectric detection) technology, the microwave radar induction technology, the TOF (time of flight) technology and the like. The infrared sensing device is sensitive to the color of a detected target, the influence of ambient light is large, and the detection distance error is large; the PSD device has high cost and large module volume; the microwave radar sensing device has the defects of high power consumption and large detection distance error. The distance sensing device adopting the TOF technology has the characteristics of small volume, quick response, high recognition rate precision, wide dynamic sensing range and the like, and is particularly suitable for the bathroom industry.

At present, in a distance sensing device adopting a TOF technology, a transparent shell is generally adopted for packaging so as to prevent malicious damage and water vapor from entering, and the following technical problems exist in the use process: 1. the thickness of the transparent shell weakens the sensing distance of the TOF module, wherein the mirror reflection and refraction of the transparent shell on the outer surface cause mutual interference between the transmitting end and the receiving end of the TOF module, so that the detection distance of the TOF module in practical application is greatly reduced. 2. If the TOF transmitting and receiving window positioned on the shell is worn or scratched to a certain extent in the using process, the transmitted signal enters the receiving end after being diffusely reflected for many times, so that the TOF module is misidentified as a detection target.

Disclosure of Invention

The utility model aims to solve the technical problem that the mutual interference between a transmitting end and a receiving end of a distance sensing module is caused by unreasonable structural design of the conventional distance sensing device.

Aiming at the technical problems, the utility model provides the following technical scheme:

a distance sensing device, comprising: the shell comprises a sensing panel, wherein the sensing panel is provided with a sensing area suitable for light transmission; the distance sensing module is arranged on the inner side of the shell body and comprises a signal transmitting and receiving surface, the signal transmitting and receiving surface is abutted to the inner surface of the sensing area, and the signal transmitting and receiving surface is provided with a transmitting end and a receiving end which are arranged at intervals; the blocking part is arranged on the induction area of the induction panel and is used for isolating light from the emission area corresponding to the emission end and the receiving area corresponding to the receiving end on the induction area.

In some embodiments of the present utility model, the sensing area of the sensing panel is provided with a jack, and at least a part of the area of the blocking portion is inserted into the jack to isolate the transmitting area from the receiving area.

In some embodiments of the present utility model, the blocking portion includes a blocking block, the blocking block is fixed on the inner side of the sensing area of the sensing panel, a blocking protrusion is disposed on the blocking block, and the blocking protrusion is inserted into the insertion hole.

In some embodiments of the present utility model, the blocking portion is integrally formed with the housing body and is formed with the sensing area of the sensing panel by two-shot molding.

In some embodiments of the present utility model, the distance sensing module includes a first motherboard and a second motherboard, where the first motherboard and the second motherboard are electrically connected; the first main board is arranged inside the shell body through a fastening component, and the second main board is provided with the signal transmitting and receiving surface.

In some embodiments of the present utility model, a sealing member is disposed between the second main board and the sensing area, and the sealing member surrounds the signal transmitting and receiving surface of the second main board.

In some embodiments of the present utility model, a boss is disposed in a middle area of the second main board, and a surface of the boss forms the signal transmitting and receiving surface.

In some embodiments of the present utility model, the blocking block includes a frame-shaped main body and a blocking protrusion located at one side of the frame-shaped main body, and the boss of the second main board is inserted into the frame-shaped main body.

In some embodiments of the present utility model, the middle area of the sensing panel protrudes outward to form a sensing area, and the sensing area forms a transparent or semitransparent area.

In some embodiments of the present utility model, the first motherboard and the second motherboard are electrically connected through a plurality of pins, and the first motherboard and the second motherboard are disposed at intervals.

In some embodiments of the present utility model, a plurality of limiting ribs and connecting holes are provided on the inner side of the housing body, and the first main board is clamped on the limiting ribs and connected to the connecting holes through fastening screws penetrating through the first main board.

In some embodiments of the present utility model, the housing body and the area of the first main board away from the second main board are filled with epoxy resin.

The utility model also provides a bathroom product, which comprises the distance sensing device and a control valve for controlling the water yield of the bathroom product.

Compared with the prior art, the technical scheme of the utility model has the following technical effects:

according to the distance sensing device provided by the utility model, the transmitting area and the receiving area in the sensing area of the sensing panel are divided by the blocking part, so that light passing through the transmitting area can not enter the receiving area even through multiple diffuse reflection, the transmitting area and the receiving area on the sensing panel can not interfere with each other, and the detection precision is higher. The working performance and the anti-interference capability of the distance sensing module are improved, so that the reliability and the detection precision of the distance sensing device are integrally improved.

Drawings

The objects and advantages of the present utility model will be better understood by describing in detail preferred embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 is an exploded view of one embodiment of a distance sensing device of the present utility model;

FIG. 2 is a cross-sectional view of one embodiment of a distance sensing device of the present utility model;

FIG. 3 is a schematic diagram of a distance sensing module in a distance sensing device according to an embodiment of the present utility model;

FIG. 4 is a schematic front view of a housing body of a distance sensing device according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a blocking portion of the distance sensing device according to an embodiment of the present utility model;

FIG. 6 is a schematic view of an inner side structure of a housing body of the distance sensing device according to an embodiment of the present utility model;

fig. 7 is an exploded view of another embodiment of the distance sensing device of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Fig. 1 shows a specific embodiment of a distance sensing device provided by the utility model, which is used for bathroom products, such as a toilet, a hand basin and the like, and is used for detecting whether a shielding object exists on the front side of the bathroom product by emitting and receiving light signals, and a controller of the bathroom product controls the on-off of a corresponding control valve of the bathroom product according to the detection signals of the distance sensing device. It will be apparent to those skilled in the art that the distance sensing device may be used in other distance detection applications.

Specifically, as shown in fig. 1 to 4, the distance sensing device comprises a housing body 10 and a distance sensing module 20 mounted on the inner side of the housing body 10, wherein the housing body 10 comprises a sensing panel 11, and the sensing panel 11 is provided with a sensing area 11a suitable for light transmission; the distance sensing module 20 includes a signal transmitting and receiving surface 20a, the signal transmitting and receiving surface 20a is abutted to the inner surface of the sensing area 11a, and the signal transmitting and receiving surface 20a has a transmitting end 20a-1 and a receiving end 20a-2 which are arranged at intervals; specifically, the distance sensing module may employ a TOF module, which emits modulated near infrared light through the emitting end 20a-1, reflects the near infrared light to the receiving end 20a-2 after encountering an object, and detects the distance of the target object by calculating the time difference or phase difference between the light emission and reflection. The distance sensing device further comprises a blocking portion 30 disposed on the sensing area 11a of the sensing panel 11, the blocking portion 30 isolates the transmitting area 11a-1 corresponding to the transmitting end 20a-1 and the receiving area 11a-2 corresponding to the receiving end 20a-2 on the sensing area 11a from light, wherein the light is isolated, the blocking portion 30 is not penetrated by light, the light passing through the transmitting area 11a-1 cannot enter the receiving area 11a-2 even through multiple diffuse reflection, the transmitting area 11a-1 and the receiving area 11a-2 on the sensing panel 11 cannot interfere with each other, and the detection accuracy is high.

Specifically, the sensing region 11a of the sensing panel 11 forms a transparent or semitransparent region so that light can be transmitted along the surface thereof. Typically, the sensing panel is entirely made of a black transparent plastic material, or only the sensing area 11a is provided as black transparent plastic; as shown in fig. 4, the sensing area 11a is provided with a jack 11b, and at least a part of the area of the blocking portion 30 is inserted into the jack 11b to isolate the transmitting area 11a-1 from the receiving area 11a-2. The blocking portion 30 is made of non-transparent plastic material of the same color as the sensing area, so that light cannot pass through the area.

More specifically, in an alternative embodiment, as shown in fig. 1, 2 and 6, the blocking portion 30 includes a blocking block 31, the blocking block 31 is fixed inside the sensing area 11a of the sensing panel 11 by using an ultrasonic welding process, a blocking protrusion 311 is disposed on the blocking block 31, and the blocking protrusion 311 is inserted into the insertion hole 11 b. More specifically, the blocking block 31 includes a frame-shaped body 312 and a blocking protrusion 311 located at one side of the frame-shaped body 312, and the transmitting area 11a-1 and the receiving area 11a-2 on the sensing area are located at two sides of the blocking protrusion 311, respectively.

In another alternative embodiment, as shown in fig. 7, the blocking portion 30 is integrally formed with the housing body 10, and the opaque blocking portion 30 is formed in the middle area of the sensing area 11a of the transparent sensing panel 11 by using a secondary molding injection process, so as to isolate the transmitting area 11a-1 from the receiving area 11a-2 of the sensing area 11 a.

In an alternative embodiment, as shown in fig. 1 and 3, the distance sensing module 20 includes a first main board 21 and a second main board 22, where the first main board 21 is electrically connected to the second main board 22; the first main board 21 is mounted inside the housing body 10 through a fastening component, and the second main board 22 is provided with the signal transmitting and receiving surface 20a. By arranging the first main board 21 and the second main board 22, the second main board 22 can be arranged to match the shape of the sensing area 11a on the sensing panel 11, and the signal transmitting and receiving surface 20a can be abutted against the inner surface of the sensing area 11a, so that signal attenuation caused by the interval between the signal transmitting and receiving surface 20a and the surface of the sensing area 11a is avoided.

In order to prevent moisture and the like from entering the second main board, as shown in fig. 2, a sealing member 40 is disposed between the second main board 22 and the sensing area 11a of the sensing panel 11, the sealing member 40 is made of sealing foam or rubber, and the sealing member 40 surrounds the signal transmitting and receiving surface of the second main board 22, so as to prevent moisture or dust located in an outer area of the second main board 22 from entering the signal transmitting and receiving surface 20a of the second main board 22 along the inner surface of the sensing panel.

More specifically, the middle area of the second main board 22 is provided with a boss 221, the surface of the boss 221 forms the signal transmitting-receiving surface 20a, and the sealing member 40 surrounds the outer area of the boss 221. The boss 221 of the second main board 22 is inserted into the frame-shaped main body 312, so as to further improve the positioning accuracy of the second main board 22 and the housing body 10.

The middle area of the induction panel 11 protrudes outwards to form an induction area 11a, the induction area 11a can be rectangular, circular or elliptical, the inner wall of the induction area 11a and other areas of the induction panel 11 form a step structure, the outer contour of the sealing element 40 is matched with the shape of the inner wall of the induction area 11a, and the sealing element 40 is limited to the inner side of the inner wall of the induction area 11a by the step structure.

Specifically, in an alternative embodiment, as shown in fig. 1, the first motherboard 21 and the second motherboard 22 are electrically connected through a plurality of pins 23, where the pins on one hand implement power supply connection between the first motherboard and the second motherboard, and on the other hand can also perform data signal transmission; the pins 23 may enable the first main board 21 and the second main board 22 to be disposed at intervals, so as to facilitate the installation and fixation of the distance sensing module 20 and the housing body.

Specifically, in order to reliably connect the distance sensing module 20 to the inner side of the housing body 10, as shown in fig. 6, a plurality of limiting ribs 12 and connecting holes 13 are provided on the inner side of the housing body 10, and the limiting ribs 12 can limit the mounting position of the first main board 21, wherein the board surface of the first main board 21 abuts against the upper surface of a part of the limiting ribs 12, a clamping groove is provided on a part of the limiting ribs 12, the first main board 21 is clamped in a part of the clamping groove of the limiting ribs 12, and after the mounting position of the first main board 21 is limited, the first main board 21 is connected to the connecting holes 13 through fastening screws penetrating through the first main board 21, and the first main board 21 can be reliably connected to the housing body 10 through the limiting connection structure.

In an alternative embodiment, the housing body 10 and the area of the first main board 21 remote from the second main board 22 are filled with epoxy resin. The distance sensing device can achieve the performances of water resistance, moisture resistance and cold and hot high and low temperature impact resistance.

The utility model also provides a specific embodiment of the bathroom product using the distance sensing device. Specifically, the bathroom product can be an intelligent toilet, and the intelligent toilet further comprises a control valve for controlling the water yield of the bathroom product. The distance sensing device is used for detecting the distance between a shielding object (such as a user body) positioned in front of the toilet and the bathroom product, and the controller of the intelligent toilet controls the control valve according to the detection signal of the distance sensing device so as to determine the water yield of the toilet. For example, when the distance between the shielding object and the bathroom product detected by the distance sensing device is smaller than a first distance value, controlling the water yield of the toilet to be a first set value; when the distance sensing device detects that the distance between the shielding object and the bathroom product is larger than the first distance value and smaller than the second distance value, the water yield of the toilet is controlled to be a second set value.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.

Claims

1. A distance sensing device, comprising:

a housing body (10), wherein the housing body (10) comprises a sensing panel (11), and a sensing area (11 a) suitable for light transmission is arranged on the sensing panel (11);

the distance sensing module (20) is arranged on the inner side of the shell body (10), the distance sensing module (20) comprises a signal transmitting and receiving surface (20 a), the signal transmitting and receiving surface (20 a) is abutted to the inner surface of the sensing area (11 a), and the signal transmitting and receiving surface (20 a) is provided with transmitting ends (20 a-1) and receiving ends (20 a-2) which are arranged at intervals;

the blocking part (30) is arranged on the sensing area (11 a) of the sensing panel (11), and the blocking part (30) isolates light rays from the transmitting area corresponding to the transmitting end (20 a-1) and the receiving area corresponding to the receiving end (20 a-2) on the sensing area (11 a).

2. A distance sensing device according to claim 1, characterized in that the sensing area (11 a) of the sensing panel (11) is provided with a receptacle (11 b) in which at least part of the area of the blocking portion (30) is inserted for isolating the transmitting area from the receiving area.

3. A distance sensing device according to claim 2, wherein the blocking portion (30) comprises a blocking block (31), the blocking block (31) is fixed inside the sensing area (11 a) of the sensing panel (11), a blocking protrusion (311) is arranged on the blocking block (31), and the blocking protrusion (311) is inserted into the insertion hole (11 b).

4. A distance sensing device according to claim 1, characterized in that the barrier (30) is integrally formed with the housing body (10) and is injection molded over the sensing area (11 a) of the sensing panel (11).

5. A distance sensing device according to claim 3, wherein the distance sensing module (20) comprises a first main board (21) and a second main board (22), the first main board (21) being electrically connected to the second main board (22); the first main board (21) is arranged inside the shell body (10) through a fastening component, and the second main board (22) is provided with the signal transmitting and receiving surface (20 a).

6. A distance sensing device according to claim 5, wherein a sealing member (40) is arranged between the second main board (22) and the sensing area (11 a), and the sealing member (40) surrounds the signal transmitting and receiving surface (20 a) of the second main board (22).

7. A distance sensing device according to claim 5, characterized in that the middle area of the second main plate (22) is provided with a boss (221), the surface of the boss (221) forming the signal transmitting-receiving surface (20 a).

8. A distance sensing device according to claim 7, wherein the blocking block (31) comprises a frame-shaped main body (312) and a blocking protrusion (311) located at one side of the frame-shaped main body (312), and the boss (221) of the second main board (22) is inserted into the frame-shaped main body (312).

9. A distance sensing device according to claim 1, characterized in that the central area of the sensing panel (11) protrudes outwards to form a sensing area (11 a), said sensing area (11 a) being formed as a transparent or translucent area.

10. A distance sensing device according to claim 5, characterized in that the first main board (21) and the second main board (22) are electrically connected by a plurality of pins (23), and the first main board (21) and the second main board (22) are arranged at intervals.

11. The distance sensing device according to claim 5, wherein a plurality of limiting ribs (12) and connecting holes (13) are formed on the inner side of the housing body (10), and the first main board (21) is clamped on the limiting ribs (12) and connected to the connecting holes (13) through fastening screws penetrating through the first main board (21).

12. A distance sensing device according to claim 4, wherein the housing body (10) and the area of the first main board (21) remote from the second main board (22) are filled with epoxy resin.

13. A toilet and bathroom product comprising a distance sensing device according to any one of claims 1-12 and a control valve for controlling the amount of water output from the toilet and bathroom product.