Waterproof sensor

Abstract

The utility model provides a waterproof sensor, and belongs to the field of sensors. The waterproof sensor comprises an upper shell, a lower shell and a first sealing ring, the upper shell is detachably connected with the lower shell; a protruding part is arranged on the contact face of the lower shell and the upper shell, and the protruding part is sleeved with the first sealing ring. The inner wall of the upper shell abuts against the first sealing ring and extrudes the first sealing ring to achieve sealing between the upper shell and the lower shell. According to the waterproof sensor, the performance and the structure can be kept stable in a liquid environment under the condition that a protective cover is not used.

Description

Technical Field

[0001] The utility model relates to the field of sensors, in particular to a waterproof sensor. Background Art

[0002] A sensor is a detection device that can detect physical, chemical, biological and other information, and convert the perceived information into an electrical signal or a digital signal to meet the requirements of information transmission, processing, storage, display, recording and control.

[0003] The sensor has a powerful ability to collect and process information and automatically exchange information, can accurately sense and transmit various information, and has the advantages of high precision, high reliability, strong adaptability, etc.

[0004] Waterproof treatment is required in places such as data centers, communication computer rooms, power stations, warehouses, and archives. However, most current sensors do not support waterproofing, resulting in a relatively single use scenario for sensors. Summary of the Utility Model

[0005] This application provides a waterproof sensor that can maintain good working performance in a long-term liquid environment.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A waterproof sensor includes an upper housing, a lower housing and a first sealing ring; the upper housing is detachably connected to the lower housing; the lower housing is provided with a protruding portion on the contact surface with the upper housing, and the first sealing ring is sleeved outside the protruding portion; the inner wall of the upper housing abuts against the first sealing ring and squeezes the first sealing ring to achieve sealing between the upper and lower housings.

[0008] The waterproof sensor provided by this application realizes the sealing between the upper and lower housings by sleeving a first sealing ring on the protruding member of the lower housing and under the extrusion of the upper and lower housings. The structure of the utility model is simple and easy to implement, and a protective cover is not required.

[0009] According to some embodiments of this application, a bending member is formed at the top of the protruding portion close to the upper housing, and a receiving groove is formed between the bending member, the protruding portion and the lower housing, and the first sealing ring is arranged in the receiving groove.

[0010] According to some embodiments of this application, it further includes an interface and a second sealing ring. The lower housing is provided with a communication hole, the interface end of the interface is communicated with the communication hole, the second sealing ring is sleeved outside the interface end of the interface, and the interface abuts against the inner wall of the lower housing through the second sealing ring.

[0011] According to some embodiments of the present application, it further includes an interface board and a limit post. The interface board is fixed to the side of the interface. An elastic member is provided inside the lower housing, and the elastic member abuts against the interface board. A limit post is provided on the side of the interface board away from the elastic member, and the limit post fixedly connects the interface board and the lower housing.

[0012] According to some embodiments of the present application, it further includes a button and a third sealing ring. An installation hole is provided on the side wall of the lower housing, the button is movably arranged in the installation hole, the third sealing ring is sleeved on the button, and the third sealing ring abuts against the lower housing.

[0013] According to some embodiments of the present application, an annular groove is provided on the button, and the third sealing ring is embedded in the annular groove.

[0014] According to some embodiments of the present application, it further includes an optical element, and the output end of the optical element is bonded to the upper housing and / or the lower housing.

[0015] According to some embodiments of the present application, the optical element includes a first light guide column, and the first light guide column is fixed to the upper housing and / or the lower housing by dispensing glue.

[0016] According to some embodiments of the present application, the optical element includes a second light guide column, and the second light guide column is fixed to the upper housing and / or the lower housing by hot melting.

[0017] According to some embodiments of the present application, it further includes a cover body and a fourth sealing ring. The cover body is provided at the bottom of the lower housing and is detachably connected to the lower housing; the fourth sealing ring is provided between the cover body and the lower housing and abuts against the lower housing.

[0018] The beneficial effects of the present utility model compared with the prior art are:

[0019] For the waterproof sensor provided by the present utility model, a first sealing ring is provided between the upper and lower housings, and the upper and lower housings achieve the waterproof effect by extruding the first sealing ring;

[0020] For the waterproof sensor provided by the present utility model, the button abuts against the inner wall of the lower housing through the third sealing ring, and by providing a groove on the button and embedding the third sealing ring in the groove, the contact area between the third sealing ring and the inner wall of the lower housing is reduced, facilitating the pressing of the button;

[0021] For the waterproof sensor provided by the present utility model, the optical element can improve its airtightness with the housing through hot melting or dispensing glue fixation, meeting the waterproof performance requirements;

[0022] The waterproof sensor provided by the present utility model is provided with a battery sealing ring at the bottom of the lower housing, and the waterproof effect is achieved by the extrusion between the lower housing and the battery cover. The battery cover is detachable, which is convenient for replacing the battery.

[0023] For the interface of the waterproof sensor provided by the present utility model, the seal between the interface and the lower housing is realized through the extrusion of the sealing ring provided thereon and the elastic member provided on the lower housing. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Exploded view of the waterproof sensor provided by the embodiment of the present utility model;

[0026] Figure 2 Cross-sectional view of the waterproof sensor provided by the embodiment of the present utility model;

[0027] Figure 3 For Figure 2 Enlarged view of part A in

[0028] Figure 4 For Figure 2 Enlarged view of part B in

[0029] Figure 5 Top view of the lower housing of the waterproof sensor provided by the embodiment of the present utility model;

[0030] Figure 6 Another cross-sectional view of the waterproof sensor provided by the embodiment of the present utility model;

[0031] Figure 7 For Figure 6 Enlarged view of part C in

[0032] Figure 8 For Figure 6 Enlarged view of part D in

[0033] The reference numerals in the drawings are as follows:

[0034] 11. Upper housing; 12. Lower housing; 121. Protruding part; 122. Elastic member; 123. Mounting member;

[0035] 2. First sealing ring;

[0036] 3. Interface; 31. Interface board; 32. Second sealing ring;

[0037] 4. Button; 41. Third sealing ring;

[0038] 5. First light guide column; 51. First adhesive layer;

[0039] 6. Second light guide column; 61. Second adhesive layer; 62. Heat melting column;

[0040] 7. Cover body; 71. Fourth sealing ring. Detailed implementation manners

[0041] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious, and without departing from the spirit and scope of this specification, the general principles defined here can be applied to other embodiments and applications. Therefore, this specification is not limited to the illustrated embodiments, but has the broadest scope consistent with the claims.

[0042] The terms used here are only for the purpose of describing specific example embodiments and are not restrictive. For example, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" used here may also include the plural forms. When used in this specification, the terms "comprise", "include" and / or "contain" mean that the associated integers, steps, operations, elements and / or components exist, but do not exclude the existence of one or more other features, integers, steps, operations, elements, components and / or groups, or the addition of other features, integers, steps, operations, elements, components and / or groups in this system / method.

[0043] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0044] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific situation.

[0045] Furthermore, the terms "installed", "set up", "equipped with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In view of the following description, these features of this specification and other features, as well as the operation and functions of the related elements of the structure, and the combination and manufacturing economy of the components can be significantly improved. Referring to the attached drawings, all of these form a part of this specification. However, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0047] In this application, the said sealing ring is made of materials with good sealing performance, such as silica gel, fluororubber, etc. In the following embodiments, unless otherwise specified, the sealing rings are all made of silica gel material.

[0048] A sensor is a detection device that can detect physical, chemical, biological and other information, and convert the perceived information into electrical signals or digital signals to meet the requirements of information transmission, processing, storage, display, recording and control, etc.

[0049] The sensor has a powerful ability to collect and process information and automatically exchange information, can accurately sense and transmit various information, and has the advantages of high precision, high reliability, strong adaptability, etc.

[0050] In many usage scenarios, especially in the fields of medical equipment, smart home, etc., the sensor is required to be able to withstand high-pressure water impact or long-term immersion, while maintaining good stability and accuracy.

[0051] However, currently most sensors do not support waterproofing, or a protective cover is attached outside the sensor to achieve the waterproof effect, resulting in relatively single usage scenarios of the sensor and inconvenient use.

[0052] A waterproof sensor proposed by the present utility model realizes the waterproofing of the housing structure by setting a sealing ring between the upper and lower housings and squeezing the sealing ring, and respectively sets a sealing structure on each component communicating with the outside, and can realize the waterproofing of the entire sensor structure without relying on an external protective cover.

[0053] To achieve the above effects, the present utility model provides a waterproof sensor, including an upper housing, a lower housing, and a sealing ring disposed between the upper and lower housings, and realizes the sealing between the upper and lower housings by squeezing the sealing ring.

[0054] Such asFigures 1-3 As shown, an upper housing 11, a lower housing 12, and a first sealing ring 2 disposed therebetween. The upper housing 11 and the lower housing 12 are detachably connected. Specifically, the upper housing 11 and the lower housing 12 are fixed by screws and buckles. On the contact surface of the lower housing 12 with the upper housing 11, there is a protruding portion 121, and the first sealing ring 2 is sleeved outside the protruding portion 121. The area of the lower end surface of the lower housing 12 gradually decreases when approaching the protruding portion 121, and a groove is formed on the inner wall of the lower housing 12 to be able to abut against the upper housing 11 while accommodating the protruding portion 121. At the same time, the inner wall of the lower housing 12 abuts against the first sealing ring 2, thus realizing the sealed connection between the upper housing 11 and the lower housing 12.

[0055] To maintain the relative stability of the first sealing ring 2 and prevent the first sealing ring 2 from detaching from the sensor when the sensor collides or shakes violently, resulting in the sensor losing its waterproof ability, a bending member is formed at the top of the protruding portion 121 in the direction close to the upper housing 11. The bending member and the protruding portion 121 together form a hook-shaped structure. An accommodating groove is formed between the bending member, the protruding portion 121, and the lower housing 12, and the first sealing ring 2 is located in the accommodating groove. The hook-shaped structure is used to prevent the first sealing ring 2 from undergoing violent deformation due to extrusion and external forces and being extruded from the gap between the protruding portion 121 and the lower housing 12.

[0056] The interface 3 of the sensor provides an electrical connection between the sensor and external devices (such as a microcontroller, a data acquisition system, a display device, etc.). Therefore, the waterproofing of the interface 3 needs to be considered emphatically.

[0057] Taking Type-C as an example of the interface 3 below, a through communication hole is provided on the lower housing 12, and the interface end of the interface 3 is communicated with the communication hole for physical connection with an external device. A second sealing ring 32 is sleeved outside the interface end of the interface 3, and a groove is formed at the front end of the interface end. The second sealing ring 32 is disposed in the groove so that the interface 3 abuts against the inner wall of the lower housing 12 through the second sealing ring 32 to realize the sealed connection between the interface 3 and the lower housing 12.

[0058] Since the interface end of the interface 3 is provided on the lower housing 12, the extrusion force on the second sealing ring 32 is not strong, resulting in the second sealing ring 32 being prone to slipping, as Figure 3 shown, an elastic member 122 is provided on the lower housing 12. At the same time, to prevent the interface 3 from being damaged due to the extrusion force, an interface board 31 is fixed on one side of the interface 3. The elastic member 122 can also prevent the interface board 31 from bouncing upward under the elastic force. Under the action of the elastic member 122 and the lower housing 12, to prevent the interface board 31 from retreating, a limiting post 33 is provided on the side of the interface board 31 away from the elastic member 122, and the limiting post 33 fixedly connects the interface board 31 and the lower housing 12.

[0059] The interface board 31 abuts against the elastic member 122 and transmits the acting force to the second sealing ring 32, thereby fixing the position of the second sealing ring 32.

[0060] There are various waterproof designs for the sensor button 4. For example, by reasonably designing the layout of the sensor traces, grounding copper plating, and series resistors, etc., to avoid water droplets straddling multiple electrodes and causing mis-triggering. Another example is, as Figure 4 shown, the side wall of the lower housing 12 is provided with a mounting hole, which divides the lower housing 12 into a mounting member 123 connected to the upper housing 11 and a main body. The button 4 is movably arranged in the mounting hole, and a third sealing ring 41 is sleeved outside the button 4. The upper end of the third sealing ring 41 abuts against the mounting member 123 and the lower end abuts against the lower housing 12, which can improve the sealing performance of the connection between the button 4 and the sensor and ensure that water cannot enter.

[0061] In order to achieve frequent pressing of the button 4 while maintaining good sealing performance, an annular groove is provided on the button 4, and the third sealing ring 41 is embedded in the annular groove. Since the contact surface between the third sealing ring 41 and the lower housing 12 is small, when the third sealing ring 41 moves together with the button 4, it will not significantly affect the sealing performance between the button 4 and the sensor.

[0062] Optical elements use optical principles for measurement and detection and are important elements in sensors. Here, the light guide column is taken as an example. As Figures 6-8 shown, the first light guide column 5 is arranged at the top of the upper housing 11, and the second light guide column 6 is arranged on the side of the lower housing 12. The first light guide column 5 and the second light guide column 6 are respectively preliminarily fixed on the sensor through the first adhesive layer 51 and the second adhesive layer 61. The first light guide column 5 is a light-sensing light guide column, so it is fixed on the PCBA board by dispensing glue. The second light guide column 6 is fixed to the lower housing 12 by means of hot melt posts 62.

[0063] As Figure 1 shown, a cover body 7 is further connected to the bottom of the sensor lower housing 12. A fourth sealing ring 71 is arranged between the cover body 7 and the lower housing 12, and the fourth sealing ring 71 abuts against the lower housing 12. The cover body 7 is snap-fitted and threadedly connected to the lower housing 12, and at the same time can squeeze the fourth sealing ring 71 to achieve the sealing between the lower housing 12 and the cover body 7.

[0064] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A waterproof sensor, characterized in that: It includes an upper shell, a lower shell and a first sealing ring; the upper shell is detachably connected to the lower shell; the lower shell is provided with a protrusion on the contact surface with the upper shell, and the first sealing ring is sleeved outside the protrusion; the inner wall of the upper shell abuts against the first sealing ring and squeezes the first sealing ring to achieve sealing between the upper and lower shells.

2. The waterproof sensor according to claim 1, characterized in that: A bending piece is formed at the top end of the protrusion close to the upper shell body, and a receiving groove is formed between the bending piece, the protrusion and the lower shell body, and the first sealing ring is arranged in the receiving groove.

3. The waterproof sensor according to claim 1, characterized in that: It also includes an interface and a second sealing ring. The lower shell is provided with a connecting hole. The interface end of the interface is connected to the connecting hole. The interface end of the interface is covered with the second sealing ring. The interface abuts against the inner wall of the lower shell through the second sealing ring.

4. The waterproof sensor according to claim 3, characterized in that: It also includes an interface plate and a limiting column, wherein the interface plate is fixed to the side of the interface, an elastic member is provided inside the lower shell, the elastic member abuts against the interface plate, and the limiting column is provided on the side of the interface plate away from the elastic member, and the limiting column fixedly connects the interface plate and the lower shell.

5. The waterproof sensor according to claim 1, characterized in that: It also includes a button and a third sealing ring. The side wall of the lower shell is provided with a mounting hole. The button can be movably arranged in the mounting hole. The third sealing ring is sleeved on the button and abuts against the lower shell.

6. The waterproof sensor according to claim 5, characterized in that: The button is provided with an annular groove, and the third sealing ring is embedded in the annular groove.

7. The waterproof sensor according to claim 1, characterized in that: It also includes an optical element, and an output end of the optical element is bonded to the upper shell and / or the lower shell.

8. The waterproof sensor according to claim 7, characterized in that: The optical element comprises a first light guide column, and the first light guide column is fixed to the upper shell and / or the lower shell by glue.

9. The waterproof sensor according to claim 7, characterized in that: The optical element comprises a second light guide column, and the second light guide column is fixed to the upper shell and / or the lower shell by thermal melting.

10. The waterproof sensor according to any one of claims 1 to 9, characterized in that: It also includes a cover body and a fourth sealing ring. The cover body is provided with the bottom of the lower shell and is detachably connected to the lower shell. The fourth sealing ring is provided between the cover body and the lower shell and abuts against the lower shell.

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