A normally open button switch with pressing feedback function

Abstract

The utility model discloses a kind of normally open button switch with press feedback function, including bottom shell, static contact, button, waterproof cover, pressboard, dynamic contact component and press feedback component;Press feedback component contains trigger lever, reset elastic member and metal spring, the stem of trigger lever is connected into the spring hole at the bottom of button, reset elastic member is located in spring hole and two ends are respectively connected with spring hole bottom wall and the connecting step of trigger lever, metal spring is located below the effect projection of trigger lever and is abutted with it.The switch can produce the auditory feedback of "tick" sound and the tactile feedback of hand feeling when pressing button through press feedback component, so that user can accurately judge whether operation is effective, avoid repeated pressing or operation not in place, improve operation accuracy and experience, and structure design is reasonable, each component cooperation is stable, guarantee the reliable realization of switch function.

Description

Technical Field

[0001] This utility model relates to the technical field of normally open push button switches with press feedback function, specifically a normally open push button switch with press feedback function. Background Technology

[0002] In numerous fields such as industrial control, smart homes, and medical devices, normally open push-button switches with pressure feedback function are widely used as a fundamental and crucial electrical control component for circuit on / off control. Their working principle is as follows: when no external force is applied, the moving contact component inside the switch is separated from the stationary contact, and the circuit is open. When an external force is applied to the button, the moving contact component moves and contacts the stationary contact, thus connecting the circuit. After the external force is removed, the button returns to its original position under the action of the reset structure, the moving contact component separates from the stationary contact again, and the circuit returns to the open state. A typical structure is shown in our previous application, application number CN2020228548821, which discloses a waterproof normally open push-button switch.

[0003] However, commonly available normally open push-button switches with press feedback have a significant drawback in practical use: they lack an effective feedback mechanism during pressing. Specifically, users cannot receive a clear audible signal when pressing the button, nor can they clearly perceive whether the button has been effectively pressed and the circuit has been switched on or off. This lack of feedback can cause inconvenience in many scenarios. For example, in emergency control procedures in industrial production, operators may delay operations due to uncertainty about whether the button has been successfully pressed, posing a safety hazard. In smart home control, users may repeatedly press the button, affecting the user experience and potentially shortening the switch's lifespan.

[0004] Therefore, how to set an effective press feedback component on a normally open push-button switch with press feedback function to achieve sound and tactile feedback when pressed, thereby improving the accuracy and user experience of operation, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a normally open push button switch with a press feedback function.

[0006] The technical solution adopted by this utility model is: a normally open push button switch with a pressing feedback function, including a bottom shell, a static contact piece connected to the bottom shell, a button movably connected to the bottom shell, a waterproof cover sleeved on the button, a pressure plate set on the waterproof cover and connected to the bottom shell, and a moving contact component set at the bottom of the button, and also includes a pressing feedback component, wherein the pressing feedback component includes a trigger rod, a reset elastic element and a metal spring.

[0007] The trigger rod includes a rod portion, a connecting step, and an actuating protrusion. The rod portion extends into and connects to the spring hole at the bottom of the button.

[0008] The reset elastic element is disposed in the spring hole, with one end abutting against the bottom wall of the spring hole and the other end abutting against the connecting step;

[0009] The metal spring is positioned below the actuating protrusion, and the actuating surface of the metal spring abuts against the actuating protrusion.

[0010] Furthermore, the reset elastic element is a helical spring, and an annular groove for positioning one end of the helical spring is provided on the side surface of the connecting step away from the action protrusion.

[0011] Furthermore, guide bosses are provided on both sides of the button, and guide grooves that are adapted to the guide bosses are provided on the inner wall of the inner cavity of the bottom shell.

[0012] Furthermore, the inner cavity bottom wall of the bottom shell is provided with a positioning groove for positioning the metal spring and the connecting step, and the positioning groove, the metal spring and the connecting step are all circular structures.

[0013] Furthermore, the bottom of the guide boss extends into a limiting step, and the bottom of the guide groove is provided with a limiting groove that matches the limiting step.

[0014] Furthermore, the metal spring includes a metal disc and an annular step around the outer ring of the metal disc, with an arc transition between the annular step and the metal disc.

[0015] Furthermore, the height of the circular step is 1-3mm, and the height of the functional protrusion is 2-5mm.

[0016] The beneficial effects of this utility model are:

[0017] 1. Effectively provides tactile feedback, enhancing the user experience and accuracy. The metal spring in the tactile feedback component works in conjunction with the actuating protrusion on the trigger lever. When the user presses the button, the actuating protrusion acts on the metal spring, causing it to deform and produce a "click" sound. Simultaneously, this tactile feedback provides the user with clear tactile feedback. This design allows users to clearly determine whether the button has been effectively pressed through both auditory and tactile perception, avoiding problems such as repeated pressing or incomplete operation due to lack of feedback.

[0018] 2. The structure is reasonably designed, with strong stability and reliability. The trigger rod extends into and connects to the spring hole at the bottom of the button. The reset elastic element is set inside the spring hole, with one end abutting against the bottom wall of the spring hole and the other end abutting against the connecting step of the trigger rod. This structural layout allows the reset elastic element to stably provide a reset force when the trigger rod moves under the action of the button, ensuring precise and stable cooperation between the trigger rod and the metal spring.

[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0022] Figure 3 This is an exploded view of the present invention.

[0023] Figure 4 This is a schematic diagram of the trigger lever.

[0024] Figure 5 This is a structural schematic diagram of the trigger lever from another perspective.

[0025] Figure 6 This is a schematic diagram of the structure of a metal shrapnel.

[0026] Figure 7 This is a schematic diagram of the bottom shell structure.

[0027] Figure 8 This is a schematic diagram of the button's structure.

[0028] Figure 1-8 In the middle: 1. Bottom shell; 2. Static contact piece; 3. Button; 4. Waterproof cover; 5. Pressure plate; 6. Moving contact assembly; 7. Trigger rod; 8. Reset elastic element; 9. Metal spring; 10. Rod part; 11. Connecting step; 12. Actuating protrusion; 13. Annular groove; 14. Guide boss; 15. Guide groove; 16. Positioning groove; 17. Limiting step; 18. Limiting groove; 19. Metal disc; 20. Circular step; 21. Spring hole. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] This utility model provides a normally open push button switch with a press feedback function.

[0032] In this embodiment, refer to Figure 1-8 The normally open push button switch with press feedback function includes a base shell 1, a stationary contact piece 2 connected to the base shell 1, a button 3 movably connected inside the base shell, a waterproof cover 4 sleeved on the button 3, a pressure plate 5 set on the waterproof cover 4 and connected to the base shell, and a moving contact component 6 set at the bottom of the button. It also includes a press feedback component, which includes a trigger rod 7, a reset elastic element 8, and a metal spring 9.

[0033] The trigger lever 7 includes a lever portion 10, a connecting step 11, and an actuating protrusion 12. The lever portion 10 extends into and connects to the spring hole 21 at the bottom of the button.

[0034] The reset elastic element is disposed in the spring hole 21, with one end abutting against the bottom wall of the spring hole and the other end abutting against the connecting step;

[0035] The metal spring is positioned below the actuating protrusion, and the actuating surface of the metal spring abuts against the actuating protrusion.

[0036] In the above technical solution, a press feedback assembly consisting of a trigger rod, a reset elastic element, and a metal spring is added to the basic structure of a normally open push-button switch with press feedback function. The rod of the trigger rod is connected to the spring hole at the bottom of the button, the reset elastic element provides a reset force to the button within the spring hole, and the metal spring is located below and abuts against the actuating protrusion. When the button is pressed, the trigger rod moves down with the button, the actuating protrusion squeezes the metal spring to deform it, generating feedback; when the button is released, the reset elastic element pushes the trigger rod to reset, and the metal spring returns to its original shape.

[0037] The press feedback component provides auditory feedback ("click") and tactile feedback when pressed, allowing users to accurately judge whether the operation is effective, avoiding repeated pressing or incomplete operation, and improving operation accuracy and user experience. The stable cooperation of each component ensures the coordinated realization of the normal on / off function and feedback function of the switch.

[0038] Specifically, the reset elastic element is a helical spring, and an annular groove 13 for positioning one end of the helical spring is provided on the side surface of the connecting step away from the action protrusion.

[0039] In this embodiment, the reset elastic element can be a helical spring, and an annular groove is provided on the side of the connecting step away from the action protrusion to position one end of the helical spring. The annular groove can limit the lateral displacement of the helical spring, ensuring its axial expansion and contraction during force application and reset. This enhances the connection stability of the helical spring, prevents spring displacement or detachment, and ensures a stable output of the reset force.

[0040] Specifically, guide protrusions 14 are provided on both sides of the button, and guide grooves 15 that are adapted to the guide protrusions 14 are provided on the inner wall of the inner cavity of the bottom shell.

[0041] In this embodiment, guide bosses are provided on both sides of the button, and a matching guide groove is provided on the inner wall of the bottom shell cavity. When the button is pressed or reset, the guide bosses slide along the guide grooves, restricting the movement trajectory of the button. This provides precise guidance for the movement of the button, prevents the button from deviating or tilting, ensures accurate contact or separation between the moving contact component and the stationary contact, and guarantees the reliability of circuit switching.

[0042] Specifically, the bottom wall of the inner cavity of the bottom shell is provided with a positioning groove 16 for positioning the metal spring and the connecting step. The positioning groove, the metal spring and the connecting step are all circular structures.

[0043] In this embodiment, a positioning groove is provided on the bottom wall of the inner cavity of the bottom shell. The metal spring and the connecting step are circular and adapted to the positioning groove. The positioning groove radially positions the metal spring and the connecting step to prevent them from shifting. This ensures that the metal spring and the trigger rod's actuating protrusion are always accurately aligned, guaranteeing the stability and consistency of the pressing feedback; it also prevents the metal spring and the connecting step from being affected by vibration or operational displacement, thus improving structural stability and operational reliability.

[0044] Specifically, the bottom of the guide boss extends into a limiting step 17, and the bottom of the guide groove is provided with a limiting groove 18 that matches the limiting step 17.

[0045] In this embodiment, a limiting step extends from the bottom of the guide boss, and a matching limiting groove is provided at the bottom of the guide groove. When the button is pressed to its limit position, the limiting step abuts against the limiting groove, restricting the button from moving further down. This prevents excessive button pressing from damaging the moving contact component, reset elastic element, or metal spring, thus providing protection; at the same time, it clearly defines the effective pressing stroke of the button, ensuring consistent operation and improving safety.

[0046] Specifically, the metal spring includes a metal disc 19 and an annular step 20 on the outer ring of the metal disc, with an arc transition between the annular step and the metal disc.

[0047] In this embodiment, the metal spring consists of a metal disc and an outer circular step, with a rounded transition between the two. When pressed, the actuating protrusion squeezes the metal disc, causing it to deform, and the force is transmitted to the circular step through the rounded transition. During reset, the rounded transition facilitates elastic recovery.

[0048] Specifically, the height of the circular step is 1-3mm, and the height of the functional protrusion is 2-5mm.

[0049] In this embodiment, the height of the circular step is limited to 1-3mm and the height of the actuating protrusion is limited to 2-5mm. This size range ensures that the pressure of the actuating protrusion on the metal spring is moderate and the deformation of the metal spring is reasonable.

[0050] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A normally open push button switch with a press feedback function, comprising a base shell, a stationary contact piece connected to the base shell, a button movably connected to the base shell, a waterproof cover sleeved on the button, a pressure plate disposed on the waterproof cover and connected to the base shell, and a moving contact assembly disposed at the bottom of the button, characterized in that: It also includes a pressure feedback component, which includes a trigger rod, a reset elastic element, and a metal spring. The trigger rod includes a rod portion, a connecting step, and an actuating protrusion. The rod portion extends into and connects to the spring hole at the bottom of the button. The reset elastic element is disposed in the spring hole, with one end abutting against the bottom wall of the spring hole and the other end abutting against the connecting step; The metal spring is positioned below the actuating protrusion, and the actuating surface of the metal spring abuts against the actuating protrusion.

2. The normally open push button switch with press feedback function according to claim 1, characterized in that: The reset elastic element is a helical spring, and an annular groove for positioning one end of the helical spring is provided on the side surface of the connecting step away from the action protrusion.

3. The normally open push button switch with press feedback function according to claim 1, characterized in that: The button has guide bosses on both sides, and the inner wall of the bottom shell has guide grooves that match the guide bosses.

4. The normally open push button switch with press feedback function according to claim 1, characterized in that: The bottom wall of the inner cavity of the bottom shell is provided with a positioning groove for positioning the metal spring and the connecting step. The positioning groove, the metal spring and the connecting step are all circular structures.

5. The normally open push-button switch with press feedback function according to claim 3, characterized in that: The bottom of the guide boss extends into a limiting step, and the bottom of the guide groove is provided with a limiting groove that matches the limiting step.

6. The normally open push button switch with press feedback function according to claim 1, characterized in that: The metal spring includes a metal disc and an annular step around the outer ring of the metal disc, with an arc transition between the annular step and the metal disc.

7. The normally open push button switch with press feedback function according to claim 6, characterized in that: The height of the circular step is 1-3mm, and the height of the functional protrusion is 2-5mm.

Images