Micro key with high sealing performance

Abstract

The utility model provides a miniature key with high sealing performance, which comprises a key shell, a key main structure and a cover plate, the key main structure comprises a convex part and an extension part, the convex part and the extension part are integrally formed, the key shell is fixedly connected with the cover plate, the key main structure is fixedly connected with the cover plate, and the cover plate is fixedly connected with the key shell. And a plurality of sealing components are arranged on the extension part. The miniature key with high sealing performance provided by the utility model is simple in structure and low in manufacturing cost, the key main structure, the extension part and the sealing bulge are integrally formed, and the waterproof performance and the dustproof performance of the miniature key can meet IP68 regulations.

Description

Technical Field

[0001] The utility model belongs to the field of buttons, and particularly relates to a high-sealing micro button. Background Art

[0002] A micro button, also known as a miniaturized button or a micro switch, is a very small electronic switch that has been widely used in fields such as mobile phones and other portable devices, small electronic devices, medical devices, industrial control devices, wearable devices, and precision instruments. They are favored for their small size, strong durability, and easy operation.

[0003] However, due to the application scenario limitations of the above micro buttons, the waterproof and dustproof performance of micro buttons usually needs to reach IP68 to ensure the reliability and durability of micro buttons. The IP rating consists of two digits. The first digit represents the dustproof rating, and the second digit represents the waterproof rating. The larger the number, the higher the protection level. IP68 means the dustproof rating is 6, completely preventing dust from entering; the waterproof rating is 8, and it can be immersed in water for a long time under specific conditions without any water ingress that can cause damage.

[0004] In the prior art, after the main structure of the button is installed in the groove of the housing, it is also necessary to fill the gap between the two with glue to achieve the waterproof and dustproof effect. Because the size of the micro button is small, the reserved glue injection gap is also small, so the glue injection amount is extremely small, as low as 0.005 ml. Precise control of the glue amount is required during the glue injection step. If the glue amount is too small, voids inside will cause the micro button to be unable to be waterproof and dustproof; if the glue amount is too large, the excess glue will overflow and be difficult to clean on the micro button, affecting the accuracy of the button, and the consistency of the button cannot be guaranteed. In addition, the glue in the glue-injected and sealed micro button has a risk of aging and failure after long-term use, and the aged glue cannot provide the waterproof and dustproof effect.

[0005] Based on the above, the present application provides a technical solution to solve the above technical problems. Summary of the Utility Model

[0006] In view of the difficult manufacturing of high-sealing micro buttons in the prior art, the utility model provides a high-sealing micro button, including:

[0007] A button housing, a button main structure, and a cover plate. The button main structure includes a protrusion and an extension part, the protrusion and the extension part are integrally formed, the button housing and the cover plate are fixedly connected, the button main structure and the cover plate are fixedly connected, and the extension part is provided with a plurality of sealing members.

[0008] In a specific embodiment of the present utility model, the cover plate is annular, including an inner ring portion and an outer ring portion. The inner ring portion and the outer ring portion are integrally formed, and the height of the outer ring portion is greater than the height of the inner ring portion.

[0009] In a specific embodiment of the present utility model, the lower side of the outer ring portion is welded and connected to the key housing.

[0010] In a specific embodiment of the present utility model, the lower side of the outer ring portion is ultrasonically welded to the key housing.

[0011] In a specific embodiment of the present utility model, the extension portion is annular, including an extended inner ring portion and an extended outer ring portion. The height of the extended inner ring portion is greater than the height of the extended outer ring portion.

[0012] In a specific embodiment of the present utility model, a plurality of sealing members are provided on both the extended inner ring portion and the extended outer ring portion. The sealing members are sealing protrusions, and the sealing protrusions are integrally formed with the extension portion.

[0013] In a specific embodiment of the present utility model, the sealing protrusions are provided on the contact surface between the extended inner ring portion and the inner ring portion of the cover plate, and on the contact surface between the extended outer ring portion and the key housing.

[0014] In a specific embodiment of the present utility model, R1 > r1 + r2, where R1 represents the length of the inner ring portion, r1 represents the length of the extended inner ring portion, and r2 represents the length of the extended outer ring portion.

[0015] In a specific embodiment of the present utility model, after the outer ring portion is fixedly connected to the key housing, a plurality of the sealing protrusions jointly seal the L-shaped channel formed between the key housing, the key and the cover plate.

[0016] In a specific embodiment of the present utility model, the high-sealing micro key is a silicone key.

[0017] The present utility model can bring at least one of the following beneficial effects: The present utility model provides a high-sealing micro key, including: a key housing, a key main structure and a cover plate. The key main structure includes a protrusion portion and an extension portion, and the protrusion portion and the extension portion are integrally formed. The key housing and the cover plate are fixedly connected. After the cover plate and the key are ultrasonically welded, a plurality of sealing protrusions integrally formed with the extension portion on the extension portion completely seal the micro key. The high-sealing micro key proposed by the present utility model avoids using glue injection with high process difficulty. The micro key has a simple structure and low manufacturing cost. The key main structure, the extension portion and the sealing protrusions are all integrally formed. The waterproof and dustproof properties of the micro key can meet the requirements of IP68. Brief Description of the Drawings

[0018] The preferred embodiments will be further described below in a clear and understandable manner in conjunction with the drawings, with respect to the above-mentioned characteristics, technical features, advantages and their implementation manners.

[0019] Figure 1 Schematic cross-section of the highly sealed micro-button proposed in the embodiment of the present utility model Figure 1 ;

[0020] Figure 2 Schematic cross-section of the highly sealed micro-button proposed in the embodiment of the present utility model Figure 2 。 Detailed Description of the Preferred Embodiments

[0021] The following further details each aspect of the present utility model.

[0022] Unless otherwise defined or stated, all professional and scientific terms used herein have the same meaning as those familiar to persons skilled in the art. In addition, any methods and materials similar or equivalent to those described herein may be applied to the present utility model.

[0023] The following explains the terms.

[0024] It can be understood that although terms such as "first", "second", etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element may be referred to as a second element without departing from the teachings of the inventive concept.

[0025] In the present utility model, the terms "comprising", "including" or "containing" mean that various components can be applied together in the mixtures or compositions of the present utility model. Thus, the term "consisting essentially of..." is included in the terms "comprising", "including" or "containing".

[0026] Unless otherwise clearly specified and defined, the terms "connected", "communicated with" and "connected" of the present utility model should be understood in a broad sense. For example, it may be a fixed connection, or may be connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0027] For example, if an element (or component) is referred to as being on another element, coupled to another element, or connected to another element, then the one element can be formed directly on, coupled to, or connected to the other element, or there can be one or more intervening elements therebetween. Conversely, if the expressions "directly on...", "directly coupled to...", and "directly connected to..." are used herein, then it means there are no intervening elements. Other words used to describe the relationship between elements should be interpreted similarly, such as "between..." and "directly between...", "attached" and "directly attached", "adjacent" and "directly adjacent", and so on.

[0028] It should be further noted that the terms "front", "rear", "left", "right", "upper", and "lower" used in the following description refer to the directions in the accompanying drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. It can be understood that herein, these terms are used to describe the relationship of one element, layer, or region relative to another element, layer, or region as shown in the accompanying drawings. Except for the orientations described in the accompanying drawings, these terms should also include other orientations of the device.

[0029] Other aspects of the present utility model will be apparent to those skilled in the art from the disclosure herein.

[0030] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will describe the specific embodiments of the present utility model with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.

[0031] It should also be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present application. The diagrams only show the components related to the present application and are not drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be arbitrarily changed, and the component layout type may also be more complex. For example, the thickness of the elements in the accompanying drawings can be exaggerated for clarity.

[0032] Embodiment

[0033] In view of the scenario in the prior art where it is difficult to manufacture a micro button with high sealing performance, as Figure 1 shown, the present utility model provides a micro button with high sealing performance, including:

[0034] A button housing 1, a main button structure 3, and a cover plate 2. The main button structure 3 includes a protruding portion and an extending portion, and the protruding portion and the extending portion are integrally formed. The button housing 1 and the cover plate 2 are fixedly connected, and the main button structure 3 and the cover plate 2 are fixedly connected. The extending portion is provided with a plurality of sealing members A and B.

[0035] Specifically, the high-sealing micro button is a silicone button, that is, the button housing, the main button structure, and the cover plate are all made of silicone.

[0036] The micro buttons in the prior art only include a button housing and a main button structure. The present utility model innovatively adds a cover plate 2, and by providing the sealing members A and B, when the cover plate 2 and the button housing 1 are welded, the sealing members A and B can seal multiple gaps between the button housing 1, the main button structure 3, and the cover plate 2, ensuring the high sealing performance of the micro button, and the waterproof and dustproof performances meet the requirements of IP68.

[0037] In a preferred embodiment of the present utility model, the cover plate 2 is annular, including an inner ring portion and an outer ring portion. The inner ring portion and the outer ring portion are integrally formed, and the height H1 of the outer ring portion is greater than the height H2 of the inner ring portion.

[0038] Preferably, the lower side of the outer ring portion is welded to the button housing 1, as Figure 1 shown, and the welding points are the triangular portions in the figure.

[0039] It should be understood that Figure 1 the figure shows a transverse cross-section of the high-sealing micro button. Although Figure 1 two symmetrical triangular welding points are shown in the figure, in fact, the contact surface between the lower side of the outer ring portion and the button housing 1 is a circular ring, that is, the welding points are also circular rings, and the center of the circular ring welding points is the center of the main button structure 3.

[0040] In a specific embodiment of the present utility model, the lower side of the outer ring portion and the button housing 1 are ultrasonically welded.

[0041] Specifically, ultrasonic welding is also called ultrasonic bonding. Ultrasonic welding has the advantages of fast processing speed, high welding strength, low welding cost, and strong welding stability.

[0042] Preferably, the extending portion is annular, including an extending inner ring portion and an extending outer ring portion, and the height of the extending inner ring portion is greater than the height of the extending outer ring portion.

[0043] More specifically, a plurality of sealing members A and B are provided on both the extending inner ring portion and the extending outer ring portion. The sealing members A and B are sealing protrusions, and the sealing protrusions are integrally formed with the extending portion.

[0044] In a specific embodiment of the present utility model, the sealing protrusions are provided on the contact surface between the extended inner ring portion and the inner ring portion of the cover plate, and on the contact surface between the extended outer ring portion and the key housing 1.

[0045] As Figure 2 shown, specifically, one sealing protrusion is provided on each of the contact surface between the extended inner ring portion and the inner ring portion of the cover plate and the contact surface between the extended outer ring portion and the key housing. After the outer ring portion is fixedly connected to the key housing, a plurality of the sealing protrusions jointly seal the L-shaped channel formed between the key housing, the key and the cover plate.

[0046] Specifically, the protrusion portion, the extension portion of the main key structure 3 and the sealing members A and B are integrally formed.

[0047] In a specific embodiment of the present utility model, as Figure 1 shown, R1 > r1 + r2, where R1 represents the length of the inner ring portion, r1 represents the length of the extended inner ring portion, and r2 represents the length of the extended outer ring portion.

[0048] It should be understood that Figure 1 the figure shows a transverse cross-section of the high-sealing micro key. The above-mentioned outer ring portion, inner ring portion, extended outer ring portion, and extended inner ring portion are all rectangles in the figure, but in the actually manufactured micro key, the outer ring portion, inner ring portion, extended outer ring portion, and extended inner ring portion are all annular, and the centers of the outer ring portion, inner ring portion, extended outer ring portion, and extended inner ring portion are all the center of the main key structure 3.

[0049] In summary, the present utility model has obtained the following effects:

[0050] The present utility model provides a high-sealing micro key, including: a key housing, a main key structure and a cover plate. The main key structure includes a protrusion portion and an extension portion, and the protrusion portion and the extension portion are integrally formed. The key housing and the cover plate are fixedly connected. After the cover plate and the key are ultrasonically welded, a plurality of sealing protrusions integrally formed with the extension portion on the extension portion completely seal the micro key. The high-sealing micro key proposed by the present utility model avoids using glue injection with high process difficulty. The micro key has a simple structure and low manufacturing cost. The main key structure, the extension portion and the sealing protrusions are all integrally formed. The waterproof and dustproof properties of the micro key can meet the requirements of IP68.

[0051] Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. In addition, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0052] Those skilled in the art know that in addition to implementing the system provided by the present utility model and its various devices, modules, and units in the form of pure computer-readable program code, the method steps can be logically programmed to enable the system provided by the present utility model and its various devices, modules, and units to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc., to achieve the same function. Therefore, the system provided by the present utility model and its various devices, modules, and units can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be regarded as the structures within the hardware component; the devices, modules, and units for implementing various functions can also be regarded as either software modules for implementing the method or structures within the hardware component.

[0053] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

[0054] All the documents mentioned in the present utility model are cited as references in this application, as if each document is cited as a reference separately. In addition, it should be understood that after reading the above content of the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A high-sealing micro-key, characterized in that: include: A button shell, a button main structure and a cover plate, wherein the button main structure includes a raised portion and an extended portion, the raised portion and the extended portion are integrally formed, the button shell and the cover plate are fixedly connected, the button main structure and the cover plate are fixedly connected, and the extended portion includes a plurality of sealing components.

2. The high-sealing micro-key according to claim 1, characterized in that: The cover plate is annular and includes an inner ring portion and an outer ring portion. The inner ring portion and the outer ring portion are integrally formed, and the height of the outer ring portion is greater than the height of the inner ring portion.

3. The high-sealing micro key according to claim 2, characterized in that: The lower side of the outer ring portion is welded to the button housing.

4. The high-sealing micro-key according to claim 3, characterized in that: The lower side of the outer ring portion is ultrasonically welded to the button housing.

5. The high-sealing micro key according to any one of claims 2 to 4, characterized in that: The extension portion is annular and includes an inner extension portion and an outer extension portion. The height of the inner extension portion is greater than the height of the outer extension portion.

6. The high-sealing micro key according to claim 5, characterized in that: A plurality of sealing components are disposed on the inner extension ring portion and the outer extension ring portion. The sealing components are sealing protrusions, and the sealing protrusions are integrally formed with the extension portion.

7. The high-sealing micro key according to claim 6, characterized in that: The sealing protrusion is arranged on the contact surface between the extended inner ring portion and the inner ring portion of the cover plate, and on the contact surface between the extended outer ring portion and the button housing.

8. The high-sealing micro key according to claim 7, characterized in that: R1>r1+r2, wherein R1 represents the length of the inner ring portion, r1 represents the length of the extended inner ring portion, and r2 represents the length of the extended outer ring portion.

9. The high-sealing micro key according to claim 8, characterized in that: After the outer ring portion is fixedly connected to the button housing, a plurality of the sealing protrusions jointly seal the L-shaped channel formed between the button housing, the button and the cover plate.

10. The high-sealing micro key according to claim 1, characterized in that: The high-sealability micro-button is a silicone button.

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