Side pressing type thin type tactile switch

Abstract

The utility model belongs to switch technical field, specifically is a kind of side press formula thin type light touch switch, including shell, pot piece, base contact, first touch plate and second touch plate, shell is composed of upper cover and base, pot piece is connected with first touch plate electrically with contact, base contact is connected with second touch plate electrically, button assembly and driving part of bendable trigger part are equipped in shell, trigger part is integrally formed by button body gap, button body is slidably arranged in shell side wall and extends to shell outside, driving part is the integrated structure of upper cover punch bending, trigger part top end and bottom end are provided with arc grooves, both contact surfaces are provided with arc chamfer, button assembly gap is equipped with torsion spring type touch mechanism, including energy storage rod, knock column and contact part with bevel, both sides in shell are equipped with reset mechanism, base is assembled waterproof membrane by mounting ring, the utility model's switch structure is compact, realize thin type, action is stable and touch is clear, adapt small thin electronic equipment.

Description

Technical Field

[0001] This utility model belongs to the field of switch technology, specifically a side-press thin tactile switch. Background Technology

[0002] In small, thin electronic devices such as mobile phones, smartwatches, and portable sensors, side-press tactile switches are the core components for realizing functional control. Their thinness, high stability, and user experience have become key technical indicators. The existing side-press tactile switches have limitations in their adaptability and performance in thin devices due to their structural design.

[0003] The existing side-press tactile switches have the following drawbacks: the triggering and driving structures of the switch are mostly designed as independent components, and the driving part needs to be processed separately and fixed to the housing. This decentralized structure not only results in a large number of parts and complex assembly processes, but also occupies a lot of longitudinal space due to the inevitable assembly gaps and connection redundancy between multiple parts, making it difficult to compress the overall thickness of the housing and failing to meet the hard requirements of thinness. Therefore, a side-press thin tactile switch is proposed to address the above problems. Utility Model Content

[0004] To address the shortcomings of existing side-press tactile switches, a new type of thin side-press tactile switch is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The side-press thin tactile switch of this utility model includes a housing, a dome switch with contacts, a base contact, a first contact plate electrically connected to the dome switch, and a second contact plate electrically connected to the base contact. The housing is composed of a top cover and a base. A button assembly with a bendable trigger part is provided inside the housing. A driving part is provided inside the housing for bending and squeezing the dome switch to make its contacts electrically connected to the base contacts.

[0006] Preferably, the button assembly includes a button body, the trigger portion is formed through a notch in the button body, the button body is slidably disposed on the side wall of the housing through a notch in the upper cover, and one end of the button body extends out of the side wall of the housing.

[0007] Preferably, the trigger part has arc-shaped grooves at both the top and bottom ends, away from the dome piece, for bending.

[0008] Preferably, the drive unit is formed by stamping and bending the upper cover, and is an integral structure with the upper cover.

[0009] Preferably, the contact surfaces of both the trigger part and the drive part are provided with arc-shaped chamfers.

[0010] Preferably, the button assembly is provided with a tactile mechanism, which includes a torsion spring located on the inner wall of the notch and sleeved by a fixed rod. One end of the torsion spring is fixed to the inner wall of the notch, and the other end extends to provide an energy storage rod. The end of the energy storage rod is provided with a striking post, and the side wall of the trigger part is provided with a contact part for compressing and storing energy in the torsion spring.

[0011] Preferably, the contact portion is provided with inclined bevels on both the front and rear sides in the direction of movement of the trigger portion.

[0012] Preferably, a waterproof membrane is fitted inside the base, above the dome switch, via an mounting ring located on its inner wall edge.

[0013] Preferably, the housing is provided with a reset mechanism for resetting the button assembly to the outside of the housing after it is pressed. The reset mechanism is provided with two sets located on both sides of the button body. The reset mechanism includes a connecting block on the button body and a reset spring connected between the connecting block and the inner wall of the housing.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides a side-press thin tactile switch. The trigger part is integrally formed through the notch of the button body and is combined with the integrated drive part formed by stamping and bending the upper cover. There is no need to assemble separate trigger and drive components. This simplifies the structure, reduces the number of parts, and eliminates the gap redundancy caused by the assembly of multiple parts. The longitudinal dimension of the housing is significantly compressed, which meets the hard requirements of thin devices for switch thickness.

[0016] The arc-shaped groove design at the top and bottom of the trigger part can guide its smooth bending in a very small space, avoiding structural damage caused by deformation dispersion. At the same time, in conjunction with the arc-shaped chamfered contact structure between the trigger part and the drive part, it can achieve smooth line contact transmission, reduce wear and ensure the stability of the pressing action.

[0017] The torsion spring tactile mechanism is integrated into the notch of the button body, providing clear and perceptible pressing feedback without taking up extra space. It adapts to the thin design while improving the user experience, and the overall structure is compact. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural view of the entire utility model;

[0020] Figure 2 This is a cross-sectional view and a partial enlarged view of the switch of this utility model in the untriggered state;

[0021] Figure 3 This is a cross-sectional view of the state after the switch of this utility model is triggered;

[0022] Figure 4 yes Figure 2 A three-dimensional structural diagram;

[0023] Figure 5 This is a top view of the top section of the shell of this utility model;

[0024] Legend:

[0025] 1. Housing; 101. Top cover; 102. Base; 2. Dome switch; 201. Contact; 3. Base contact; 4. First contact plate; 5. Second contact plate; 6. Drive unit; 7. Chamfered corner; 8. Touch mechanism; 801. Torsion spring; 802. Energy storage rod; 803. Striking post; 804. Contact part; 8041. Bevel; 9. Button assembly; 901. Trigger part; 9011. Arc groove; 902. Button body; 903. Notch; 10. Mounting ring; 11. Waterproof membrane; 12. Reset mechanism; 1201. Connecting block; 1202. Reset spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Specific implementation examples are given below.

[0028] Please see Figures 1-5 The present invention discloses a side-press thin tactile switch, comprising a housing 1, a dome switch 2 with contacts 201, a base contact 3, a first contact plate 4 electrically connected to the dome switch 2, and a second contact plate 5 electrically connected to the base contact 3. The housing 1 is composed of an upper cover 101 and a base 102, which are fixedly connected by rivets. A button assembly 9 with a bendable trigger part 901 is provided inside the housing 1. A drive part 6 is provided inside the housing 1 for bending and squeezing the dome switch 2 to make the contacts 201 on it electrically connected to the base contact 3.

[0029] The button assembly 9 includes a button body 902, and the trigger part 901 is formed through a notch 903 on the button body 902. The button body 902 is slidably disposed on the side wall of the housing 1 through a notch on the upper cover 101, and one end of it extends out of the side wall of the housing 1.

[0030] The housing 1 is equipped with a reset mechanism 12 for resetting the button assembly 9 to the outside of the housing 1 after being pressed. The reset mechanism 12 has two sets located on both sides of the button body 902. The reset mechanism 12 includes a connecting block 1201 on the button body 902 and a reset spring 1202 connected between the connecting block 1201 and the inner wall of the housing 1. During operation, when a lateral pressing force is applied to the button body 902 extending outward from the housing 1, the reset spring 1202 is stretched, and the trigger part 901 moves inward from the housing 1. During this process, the driving part 6 inside the housing 1 contacts the trigger part 901 and forms a limiting support. As the pressing force continues to act, the driving part 6 exerts a guiding squeeze on the trigger part 901, causing the trigger part 901 to bend in a specific direction. After bending, the trigger part 901 directly squeezes the dome switch 2 below, causing the dome switch 2 to deform and the contact points on its surface to bend. The circuit is connected when the button 201 contacts the base contact 3 on the base 102. Current is transmitted through the first contact plate 4, which is electrically connected to the dome switch 2, and the second contact plate 5, which is electrically connected to the base contact 3. When the pressure is released, the button body 902 is pulled by the elastic restoring force of the reset spring 1202, which drives the button body 902 to slide back to the outside of the housing 1 along the notch of the upper cover 101. The trigger part 901 then returns to its original state. The dome switch 2 rebounds under its own elasticity, and its contact 201 separates from the base contact 3, disconnecting the circuit. The switch returns to its initial state. The overall structure of this utility model is compact and adaptable to the installation requirements of thin devices. The trigger part 901 is integrally formed through the notch 903 of the button body 902, eliminating the need for additional independent trigger components. This simplifies the structure, reduces the number of parts, and reduces assembly errors. At the same time, it saves internal space in the housing 1, further ensuring the thinness of the switch.

[0031] Furthermore, the trigger part 901 has arc-shaped grooves 9011 at its top and bottom ends, away from the dome switch 2, for bending. During operation, when the trigger part 901 bends towards the dome switch 2 under the action of the drive part 6, the arc-shaped grooves 9011 at its top and bottom ends away from the dome switch 2 will form stress concentration areas. The curved surface structure of the arc-shaped groove 9011 restricts the deformation of the material of the trigger part 901 during bending to the arc-shaped area, avoiding local overstretching or compression caused by deformation dispersion. At the same time, the arc transition design reduces the internal stress of the material during bending, allowing the trigger part 901 to bend smoothly along the extension direction of the arc-shaped groove 9011. This ensures that the dome switch 2 can be effectively deformed without the trigger part 901 breaking due to excessive bending. Through the combination of the above structures, the arc-shaped groove 9011 can achieve the required bending range in a smaller space, further adapting to the requirements of thinness and miniaturization of the switch.

[0032] Furthermore, the drive unit 6 is formed by stamping and bending the upper cover 101, and is an integral structure with the upper cover 101. During operation, the drive unit 6 is integrally formed by stamping and bending the metal upper cover 101, so that it forms an integral structure without splicing with the upper cover 101. The integrated design of the drive unit 6 and the upper cover 101 has no additional assembly gaps and redundant connection structures, which compresses the longitudinal dimension of the housing 1, meets the hard requirements of the thickness of the thin tactile switch, and eliminates the production, transportation and assembly processes of the independent drive component, reduces the number of parts, and reduces production costs and assembly time. Compared with the independently assembled drive unit, the integrated design does not require additional assembly space, further compressing the internal volume of the housing 1, and providing structural guarantee for the thinning of the tactile switch.

[0033] Furthermore, both the trigger part 901 and the drive part 6 have arc-shaped chamfers 7 on their opposing contact surfaces. During operation, when the trigger part 901 moves towards the drive part 6, the arc-shaped chamfers 7 make initial contact. The curved surface structure of the arc-shaped chamfer changes the contact method from surface contact to line contact, and the contact point can smoothly slide along the arc surface as the trigger part 901 moves, avoiding jamming. During the sliding process, the guiding effect of the arc-shaped chamfer 7 allows the trigger part 901 to deform smoothly in the bending direction, ensuring that the bending trajectory of the trigger part 901 is accurately aligned with the center area of ​​the dome switch 2. At the same time, the line contact method reduces the friction area between the two, reducing the wear during relative sliding. When resetting, the arc-shaped chamfer 7 can also guide the trigger part 901 to smoothly disengage from the drive part 6 and return to its initial position, improving the user's pressing feel, avoiding circuit failure due to contact misalignment, and improving the reliability of the switch action.

[0034] Furthermore, the button assembly 9 is provided with a tactile mechanism 8, which includes a torsion spring 801 located on the inner wall of the notch 903 and sleeved by a fixing rod. One end of the torsion spring 801 is fixed to the inner wall of the notch 903, and the other end extends to provide an energy storage rod 802. The end of the energy storage rod 802 is provided with a striking post 803. The side wall of the trigger part 901 is provided with a contact part 804 for compressing and storing energy in the torsion spring 801. The contact part 804 is located on both sides in the moving direction of the trigger part 901. All are equipped with a ramp 8041. During operation, in the initial state, the torsion spring 801 is in a naturally relaxed state, and the energy storage rod 802 is separated from the contact part 804. When the button body 902 is pressed, the trigger part 901 moves into the housing 1, and the contact part 804 moves synchronously with the trigger part 901. The ramp 8041 on the front side of its movement gradually contacts the energy storage rod 802 and pushes the energy storage rod 802 to rotate around the fixed rod. At this time, the torsion spring 801 is compressed and stores elastic potential energy. As the pressing action continues, the stored energy... The energy rod 802 slides along the inclined surface of the ramp 8041, and the compression of the torsion spring 801 gradually increases until the contact part 804 slides over the striking post 803. At this time, the torsion spring 801 instantly releases the stored elastic potential energy, causing the energy storage rod 802 to rotate rapidly. The striking post 803 at its end strikes the inner wall of the housing 1, producing clear tactile feedback, indicating to the user that the dome switch 2 and the base contact point 3 have achieved conductivity. After release, the button assembly 9 moves outward under the action of the reset mechanism 12, and the ramp 804 on the rear side of the contact part 804... 041 pushes the energy storage rod 802 to rotate in the opposite direction, the torsion spring 801 relaxes and resets, and the energy storage rod 802 and the striking post 803 return to their initial positions, preparing for the next press tactile feedback. Through the design and cooperation of the above structure, clear and perceptible press tactile feedback is provided to the user, helping the user to accurately judge the on / off state of the switch. The tactile mechanism 8 is integrated into the notch 903 of the button body 902, with a compact structure that does not require a large amount of extra space inside the housing 1, and is suitable for the thin and miniaturized design of the switch.

[0035] Furthermore, a waterproof membrane 11 is fitted inside the base 102 above the dome switch 2 via a mounting ring 10 set along its inner wall edge. During operation, the waterproof membrane 11 is fixedly fitted above the dome switch 2 via the mounting ring 10 along the inner wall edge of the base 102, forming a sealed barrier covering the dome switch 2, base contacts 3, and other core conductive components. When the switch is in a humid or dusty environment, the waterproof membrane 11 can prevent moisture, dust, oil, and other foreign matter from entering through gaps in the housing 1 or the sliding part of the button assembly 9, avoiding foreign matter adhering to the contact 201 of the dome switch 2 or the surface of the base contacts 3. Simultaneously, the waterproof membrane 11 is made of a material with a certain degree of elasticity; when the trigger part 901 bends and squeezes the dome switch 2, the waterproof membrane... The waterproof membrane 11 can adapt to the deformation of the dome 2 with slight deformation, without hindering the contact between the dome 2 and the base contact 3. When the dome 2 springs back to its original position, the waterproof membrane 11 can also return to its original shape simultaneously without affecting the normal operation of the switch. This improves the waterproof and dustproof rating of the switch, expands the applicable scenarios of the switch, and makes it suitable for use in humid environments such as bathrooms and kitchens or dusty outdoor environments. It enhances the environmental adaptability of the product, protects the core conductive components such as the dome 2 and the base contact 3 from foreign object corrosion, avoids poor contact or circuit failure caused by contact oxidation and contamination, and extends the service life of the switch. Compared with the overall sealed shell design, this partial waterproof structure is lighter and does not increase the overall thickness of the switch, making it suitable for thinner designs.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A side-press type thin tactile switch, comprising a housing (1), a dome switch (2) with contacts (201), a base contact (3), a first contact plate (4) electrically connected to the dome switch (2), and a second contact plate (5) electrically connected to the base contact (3), characterized in that: The housing (1) is composed of a top cover (101) and a base (102). A button assembly (9) with a bendable trigger part (901) is provided inside the housing (1). A drive part (6) is provided inside the housing (1) for bending the trigger part (901) to squeeze the dome switch (2) so that its upper contact (201) is electrically connected to the base contact (3).

2. The side-press type thin tactile switch according to claim 1, characterized in that: The button assembly (9) includes a button body (902), and the trigger part (901) is formed through a notch (903) on the button body (902). The button body (902) is slidably disposed on the side wall of the housing (1) through a notch on the top cover (101), and one end of it extends out of the side wall of the housing (1).

3. A side-press type thin tactile switch according to claim 1, characterized in that: The trigger part (901) has an arc-shaped groove (9011) at both the top and bottom ends away from the dome piece (2) for bending.

4. A side-press type thin tactile switch according to claim 1, characterized in that: The drive unit (6) is formed by stamping and bending the upper cover (101) and is an integral structure with the upper cover (101).

5. A side-press type thin tactile switch according to claim 1, characterized in that: Both the trigger part (901) and the drive part (6) have arc-shaped chamfers (7) on their opposite contact surfaces.

6. A side-press type thin tactile switch according to claim 2, characterized in that: The button assembly (9) is provided with a tactile mechanism (8), which includes a torsion spring (801) located on the inner wall of the notch (903) and sleeved by a fixing rod. One end of the torsion spring (801) is fixed to the inner wall of the notch (903), and the other end extends to provide an energy storage rod (802). The end of the energy storage rod (802) is provided with a striking post (803). The side wall of the trigger part (901) is provided with a contact part (804) for compressing and storing energy in the torsion spring (801).

7. A side-press type thin tactile switch according to claim 6, characterized in that: The contact portion (804) is provided with inclined bevels (8041) on both the front and rear sides in the moving direction of the trigger portion (901).

8. A side-press type thin tactile switch according to claim 1, characterized in that: The base (102) is fitted with a waterproof membrane (11) through an installation ring (10) located above the dome (2) and along its inner wall edge.

9. A side-press type thin tactile switch according to claim 1, characterized in that: The housing (1) is provided with a reset mechanism (12) for resetting the button assembly (9) to the outside of the housing (1) after being pressed. The reset mechanism (12) is provided with two sets located on both sides of the button body (902). The reset mechanism (12) includes a connecting block (1201) on the button body (902) and a reset spring (1202) connected between the connecting block (1201) and the inner wall of the housing (1).

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