An underwater key encoder based on double hall sensors
Patent Information
- Application Number
- CN202522481845.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-24
AI Technical Summary
[0003]第一、触点与旋转构件直接接触，使得在长期旋转使用下，需要经常性的接触并发生摩擦，时间久之后，便容易磨损，造成寿命短；
[0013]由于采用了上述方案，本实用新型采用霍尔传感器和磁铁之间的感应原理，让进行旋转和按压的操控杆与霍尔传感器分隔开，使得在操控时，不会进行接触，也就不会发生磨损；同时，以十分简单的结构实现操控杆旋转和按压动作，其中在防水上，因为采用分隔的方式进行设计，电路板处便不需要考虑活动间隙，可以十分简单的进行防水设计，并且防水性能也更好，更有保障。
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Figure CN224909468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underwater button encoder technology, and in particular to an underwater button encoder based on dual Hall sensors. Background Technology
[0002] Most of the knobs and buttons in underwater electronic devices are powered by mechanical encoders. Traditional mechanical encoders have the following problems when used underwater:
[0003] First, the contact points are in direct contact with the rotating components, which means that they need to be in frequent contact and friction during long-term rotation. Over time, this will easily wear out and result in a short lifespan.
[0004] Secondly, the overall mechanism of mechanical encoders is relatively complex, and corresponding rotational space needs to be set up inside. If it is to be used underwater, the requirements for waterproof structure design are high. Moreover, as the usage time increases, i.e., wear and tear, it is basically impossible to avoid water leakage.
[0005] Third, some mechanical encoders are only designed to allow rotation and cannot simultaneously have a pressing function. If they are designed to have both pressing and rotation, the structure will be more complex, which will further increase the difficulty of waterproof structure design.
[0006] Therefore, structural innovation is necessary to address the shortcomings of the existing technologies. Utility Model Content
[0007] To address the shortcomings of the existing technology, the purpose of this utility model is to provide an underwater button encoder based on dual Hall sensors that has a simple structure and avoids the impact of mechanical wear on service life.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] An underwater button encoder based on dual Hall sensors includes a housing, a control lever, and a base mounted on an underwater device. The bottom of the housing fits into the base, forming a sealed cavity between the bottom of the housing and the base. A circuit board electrically connected to the underwater device is fixedly installed within the sealed cavity. A linear Hall sensor is positioned at the center of the circuit board, and at least two latching Hall sensors are positioned along the edges of the circuit board. A movable cavity is located at the top of the housing, and the bottom end of the control lever is inserted into the movable cavity. The bottom end of the control lever also has a limiting edge for preventing the control lever from disengaging from the movable cavity. A ring magnet and a bar magnet are fixedly mounted at the bottom end of the control lever. The ring magnet is positioned directly above the latching Hall sensor, and the bar magnet is positioned directly above the linear Hall sensor. A spring is installed within the movable cavity, with one end of the spring placed at the bottom of the movable cavity and the other end placed on the ring magnet.
[0010] Preferably, at least one sealing ring is provided at the mating point between the outer shell and the base.
[0011] Preferably, the top of the control lever is provided with an anti-slip part.
[0012] Preferably, a limiting groove is provided at the bottom of the movable cavity, and one end of the spring is placed in the limiting groove.
[0013] By adopting the above-mentioned solution, this utility model uses the induction principle between the Hall sensor and the magnet to separate the control lever that rotates and presses from the Hall sensor, so that there is no contact during operation and no wear occurs. At the same time, the rotation and pressing actions of the control lever are realized with a very simple structure. In terms of waterproofing, because of the separation design, there is no need to consider the movement gap at the circuit board, which can be easily waterproofed, and the waterproof performance is better and more reliable. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0015] Figure 2 This is a cross-sectional view of an embodiment of the present utility model.
[0016] Figure 3 This is a schematic diagram of the circuit board structure according to an embodiment of the present invention. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0020] like Figures 1 to 3 As shown, this embodiment provides an underwater button encoder based on dual Hall sensors, including a housing 1, a control lever 2, and a base 3 mounted on an underwater device. The bottom of the housing 1 is fitted onto the base 3, and a sealed cavity 4 is formed between the bottom of the housing 1 and the base 3. A circuit board 5 electrically connected to the underwater device is fixedly installed inside the sealed cavity 4. A linear Hall sensor 6 is disposed at the center of the circuit board 5, and at least two latching Hall sensors 7 are disposed at the edges of the circuit board 5. A movable Hall sensor 7 is disposed at the top of the housing 1. The movable cavity 8 is provided with a bottom end of the control lever 2 inserted into it. The bottom end of the control lever 2 is also provided with a limiting edge 9 for limiting the control lever 2 from disengaging from the movable cavity 8. The bottom end of the control lever 2 is fixedly provided with a ring magnet 10 and a bar magnet 11. The ring magnet 10 is located directly above the latching Hall sensor 7, and the bar magnet 11 is located directly above the linear Hall sensor 6. A spring 12 is provided in the movable cavity 8. One end of the spring 12 is placed at the bottom of the movable cavity 8, and the other end of the spring 12 is placed on the ring magnet 10.
[0021] This embodiment primarily employs the induction principle between two types of Hall sensors and magnets to separate the rotating and pressing control lever 2 from the Hall sensors, preventing contact and wear during operation. Simultaneously, it achieves the rotation and pressing actions of the control lever 2 with a very simple structure; simply inserting the control lever 2 into the movable cavity 8, with a spring 12 installed in the movable cavity 8 for reset. This allows for both pressing and rotating operations of the control lever 2. When the control lever 2 is pressed down or released and rebounds, i.e., when the bar magnet 11 moves up and down, the resulting magnetic field change is detected by the linear Hall sensor 6, which changes the output level to determine whether the button is pressed or released. When the control lever 2 is rotated, i.e., when the ring magnet 10 rotates, the resulting magnetic field change is detected by two latching Hall sensors 7. When the polarity changes, the output level of the latching Hall sensors 7 changes, thus affecting the encoder's rotation control. In this way, a non-contact underwater button encoder can be realized using two types of magnets and two types of Hall sensors. Furthermore, because of the non-contact design, not only is wear avoided, but also waterproofing is achieved through a separation design. There is no need to consider the movement gap at the circuit board, so it can be made into an absolutely sealed design. Moreover, a very simple waterproof design can be used, that is, at least one sealing ring 13 is provided at the mating point between the outer shell 1 and the base.
[0022] Furthermore, to facilitate rotation, the top of the control lever 2 in this embodiment is provided with an anti-slip part 14. Of course, the specific shape of the anti-slip part 14 can be varied, such as a scalloped head, a serrated surface, etc.
[0023] Furthermore, in order to prevent the spring 12 from deviating during compression or rebound, a limiting groove 15 is provided at the bottom of the active cavity 8 in this embodiment. One end of the spring 12 is placed inside the limiting groove 15, which can effectively limit the position of the spring 12 and ensure that the spring 12 will not deviate.
[0024] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An underwater button encoder based on dual Hall sensors, characterized in that: The device includes a housing, a control lever, and a base mounted on an underwater device. The bottom of the housing fits onto the base, forming a sealed cavity between the bottom of the housing and the base. A circuit board electrically connected to the underwater device is fixedly installed within the sealed cavity. A linear Hall sensor is positioned at the center of the circuit board, and at least two latching Hall sensors are positioned along the edges of the circuit board. A movable cavity is located at the top of the housing, and the bottom end of the control lever is inserted into the movable cavity. The bottom end of the control lever also has a limiting edge for preventing the control lever from disengaging from the movable cavity. A ring magnet and a bar magnet are fixedly mounted at the bottom end of the control lever. The ring magnet is positioned directly above the latching Hall sensor, and the bar magnet is positioned directly above the linear Hall sensor. A spring is installed within the movable cavity, with one end of the spring placed at the bottom of the movable cavity and the other end placed on the ring magnet.
2. The underwater button encoder based on a dual Hall sensor as described in claim 1, characterized in that: At least one sealing ring is provided at the mating point between the outer shell and the base.
3. The underwater button encoder based on a dual Hall sensor as described in claim 2, characterized in that: The top of the control lever is provided with an anti-slip part.
4. The underwater button encoder based on a dual Hall sensor as described in claim 3, characterized in that: A limiting groove is provided at the bottom of the movable cavity, and one end of the spring is placed in the limiting groove.