Pressing device and pressing switch

Abstract

The invention relates to the field of switches, in particular to a pressing device and a pressing switch, which comprise a fixing piece, a triggering piece and an elastic buffer piece, and is characterized in that the fixing piece is buckled on a springback key and comprises a fixed supporting part and an abutting part which are connected with each other; the triggering piece is in sliding connection with the fixed supporting part and can trigger the springback key in the sliding direction of the fixed supporting part; the elastic buffer piece is connected with the trigger piece, when the rebound key drives the trigger piece to rebound, the elastic buffer piece firstly touches the abutting portion, and through cooperative arrangement of the fixing piece, the trigger piece and the elastic buffer piece, the contact distance between the abutting face of the elastic buffer piece and the abutting portion is smaller than the contact distance between the abutting face of the trigger piece. In the springback stage, deformation energy absorption of the elastic buffering piece is preferentially triggered, rigid limiting is only used as final stroke constraint, and therefore rigid collision noise is reduced on the premise that touch linearity is not sacrificed.

Description

Technical Field

[0001] The present invention relates to the field of switches, and in particular to a pressing device and a pressing switch. Background Art

[0002] As the intelligentization process of new energy vehicles accelerates, the performance requirements of in-vehicle human-computer interaction systems for physical buttons are becoming increasingly stringent, especially in terms of tactile feedback accuracy, operational safety and durability, facing multiple challenges.

[0003] Existing in-vehicle buttons often use conductive metal or hard plastic components that come into direct contact with the user's finger. While this provides clear tactile feedback, frequent and prolonged pressing can easily wear out the insulation layer, posing a safety risk of electric shock. To mitigate this risk, some solutions use non-conductive insulating layers (such as rubber pads) around the buttons. However, this structure significantly weakens the tactile sensation and results in blurred feedback, making it difficult to meet the precision requirements for blind operation while the vehicle is in motion.

[0004] Traditional rebound mechanisms rely on metal springs or hard stoppers to reset, generating a rigid collision noise when the key rebounds, severely degrading the user experience. Although attempts have been made to reduce noise by adding soft buffer modules, the deformation hysteresis of traditional soft materials coupled with the nonlinear coupling of key travel results in a stiff feel during the pressing phase and a sluggish rebound phase. In summary, how to achieve the coordinated optimization of high-definition tactile feedback and low-noise rebound while ensuring complete isolation between the operator and conductive components, while maintaining structural compactness and long-term durability, has become a technical challenge that needs to be overcome in the field of intelligent interactive push-button switches for new energy vehicles. Summary of the Invention

[0005] (1) The technical problem to be solved by the present invention is that the existing pressing device has technical defects such as vague tactile feedback and significant rigid collision noise during the rebound stage. In addition, the reliance on an additional buffer layer leads to structural redundancy, insufficient durability, and poor user experience.

[0006] (2) Technical solution In order to solve the above technical problems, an embodiment of the present invention provides a pressing device for triggering a rebound button, comprising a fixing member, an elastic buffer member, and a trigger member, wherein the fixing member is buckled on the rebound button and comprises a fixing support portion and an abutting portion connected to each other; The trigger member is slidably connected to the fixed support portion and can trigger the rebound button along the sliding direction of the fixed support portion. When the trigger is completed, the rebound button drives the trigger member to rebound to the initial position. At this time, the trigger member abuts against the abutting portion of the fixed member, completing the triggering of the rebound button once. The elastic buffer is connected to the trigger member. When the trigger member triggers the rebound button, the contact distance between the abutting surface of the elastic buffer and the abutting portion is smaller than the contact distance between the abutting surface of the trigger member and the abutting portion. When the rebound button drives the trigger member to rebound, the elastic buffer first contacts the abutting portion.

[0007] When the rebound button drives the trigger part to rebound, the elastic buffer part first touches the abutment part. Through the coordinated arrangement of the fixing part, the trigger part and the elastic buffer part, the contact distance between the abutment surface of the elastic buffer part and the abutment part is smaller than the contact distance of the abutment surface of the trigger part. In the rebound stage, the deformation energy absorption of the elastic buffer part is preferentially triggered, and the rigid limit is only used as the final stroke constraint, thereby reducing the rigid collision noise without sacrificing the linearity of the touch.

[0008] According to one embodiment of the present invention, the contact area between the elastic buffer and the abutment portion is smaller than the contact area between the trigger member and the abutment portion. The small contact area of ​​the elastic buffer is used to concentrate the impact load to accelerate deformation energy absorption, and the large contact area of ​​the trigger member is used to provide rigid limit tactile feedback, so that the noise is reduced by the efficient energy absorption of the elastic buffer during the rebound process.

[0009] According to one embodiment of the present invention, the abutting portion includes a base and a slot provided on the base, and the trigger member slides through the slot: The elastic buffer includes at least one elastic arm, one end of the elastic arm is fixed to the side wall of the trigger member, and the other end extends along the abutment surface of the trigger member, and a contact protrusion is provided on the contact side of the extended end. Through the cantilever extension design of the elastic arm, the rebound impact force is converted into the bending deformation energy of the arm, and the hysteresis characteristics of the elastic material are used to absorb high-frequency vibration energy, thereby suppressing noise generation.

[0010] The top end of the touch protrusion protrudes at a set height relative to the abutment surface of the trigger member, so that when the trigger member rebounds to the initial position, the touch protrusion contacts the abutment portion before the abutment surface of the trigger member, and the elastic support arm is squeezed by the base to produce elastic deformation toward the inside of the slot to buffer the impact force, until the abutment surface of the trigger member abuts against the side wall of the slot to form a final limit. A staged buffering mechanism is formed by setting the height difference: at the initial stage of rebound, the touch protrusion preferentially contacts the abutment portion, triggering the deformation of the elastic support arm to absorb energy; at the end of rebound, the abutment surface of the trigger member is in rigid contact, providing instantaneous tactile feedback, thereby realizing "soft first, hard later" dynamic and static separation control.

[0011] According to one embodiment of the present invention, the extended end of the elastic arm extends along the outer contour of the abutment surface of the trigger member to form an extended section, with a clearance gap provided between the extended section and the side wall of the trigger member. The close-fitting layout of the extended section along the outer contour of the trigger member and the coordinated design of the clearance gap significantly reduce the space occupied by the elastic arm and position the contact protrusion as close as possible to the abutment surface of the trigger member. This prioritizes the deformation and energy absorption of the elastic arm during rebound, shortening the buffer response time. The clearance gap also provides dynamic space for the elastic arm to deform, preventing additional noise generated by friction between the extended section and the side wall of the trigger member.

[0012] According to one embodiment of the present invention, the side wall at the abutting surface of the trigger member is provided with a concave accommodating groove, and the extension section of the elastic support arm is at least partially accommodated in the accommodating groove. By accommodating the extension section in the accommodating groove, the lateral occupied space of the elastic support arm is further compressed.

[0013] According to one embodiment of the present invention, at least two elastic arms are provided, and are evenly distributed around the trigger member with the sliding direction axis of the trigger member as the central axis. Through the central symmetrical layout design of the double arms, the rebound impact force is evenly dispersed along the central axis, eliminating the unbalanced load wear and vibration noise caused by unilateral load. At the same time, the energy absorption efficiency is improved through the coordinated deformation of multiple arms, ensuring the axial symmetry and operational consistency of the tactile feedback.

[0014] According to one embodiment of the present invention, the contact protrusion includes a hemispherical protrusion. Through the point contact design of the hemispherical protrusion, the rebound impact force is concentrated on the top of the protrusion, triggering the elastic arm to quickly deform and absorb energy, while reducing the friction area of ​​the contact surface and reducing sliding noise; the hemispherical curvature further disperses the contact stress, avoids local plastic deformation, and improves the durability of the contact protrusion and the consistency of tactile feedback.

[0015] According to one embodiment of the present invention, the triggering member includes: The force transmission module includes a pressure portion and a limit slider fixedly connected to the pressure portion, wherein the pressure portion directly contacts and drives the trigger end of the rebound button, and the pressure portion is further provided with an insertion channel extending along the sliding direction; An operating module, comprising an inserting section and an operating portion connected to the inserting section, wherein the inserting section passes through the slot of the base body and is inserted into the inserting channel; The operating portion is located on a side of the base away from the rebound button and is spaced a preset distance from the surface of the base. The split arrangement makes the two easy to disassemble, facilitates internal maintenance and repair, and limits the pressing stroke of the trigger member.

[0016] According to one embodiment of the present invention, at least two elastic locking mechanisms are provided on the outer periphery of the plug-in section, and the elastic locking mechanisms are spaced apart along the axial direction of the plug-in section; The inner wall of the plug-in channel is provided with a plurality of locking openings corresponding to the elastic locking mechanism; The elastic locking mechanism includes an elastic member and a buckle provided at the end thereof, wherein the buckle partially protrudes from the outer surface of the plug-in section in a natural state and is fixedly engaged with the locking opening; When the buckle is radially contracted by external pressure, the insertion section can move axially along the insertion channel to adjust the insertion depth, or be pulled out of the insertion channel as a whole; The change of the insertion depth corresponds to adjusting the preset distance between the operating portion and the surface of the base body, so as to realize the control of the rebound stroke of the trigger member.

[0017] Another embodiment of the present invention provides a push switch, including a switch body and a pressing device, wherein the switch body includes a rebound button, and the pressing device is the pressing device described in any of the above embodiments.

[0018] (3) Beneficial effects of the present invention: Through the preferential contact and deformation energy absorption between the abutting surface and the abutting portion of the elastic buffer, the impact energy is first absorbed during the rebound process of the trigger member to reduce noise, and then the abutting surface of the trigger member and the abutting portion are rigidly abutted to provide clear tactile feedback, thereby simultaneously achieving the coordinated optimization of noise control and tactile clarity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a push switch provided by one embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a push switch provided by one embodiment of the present invention; Figure 3 A schematic perspective view of a partial structure of a fixing member provided in one embodiment of the present invention; Figure 4 A schematic diagram of a trigger assembly according to an embodiment of the present invention; Figure 5 A three-dimensional schematic diagram of an operating unit provided by an embodiment of the present invention; Figure 6A three-dimensional schematic diagram of a pressure applying portion provided by one embodiment of the present invention; Figure 7 A schematic plan view of the internal structure of a pressing device provided by one embodiment of the present invention; Figure 8 A schematic diagram of a second three-dimensional structure of a pressure-applying portion provided by an embodiment of the present invention; Figure 9 A schematic diagram of the three-dimensional structure of a trigger member and an elastic buffer provided in one embodiment of the present invention; Figure 10 A schematic diagram of the internal structure of a pressing device provided by one embodiment of the present invention; Figure 11 A schematic diagram of a third three-dimensional structure of a pressure-applying portion provided by an embodiment of the present invention; Figure 12 A schematic diagram of a top view of a pressure applying portion according to an embodiment of the present invention; Figure 13 A schematic diagram of the internal structure of a pressing device provided in one embodiment of the present invention.

[0021] Icons: 1. Fixing part; 11. Fixed support part; 12. Abutment part; 121. Base; 122. Slot; 2. Trigger; 21. Pressure part; 211. Insertion channel; 2111. Locking opening; 22. Limiting slider; 23. Insertion section; 231. Elastic locking mechanism; 2311. Buckle; 24. Operating part; 3. Elastic buffer; 31. Elastic support arm; 32. Contact protrusion; 33. Avoidance gap; 4. Press switch; 41. Rebound button. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Specific embodiment: Example 1: like Figures 1 to 6As shown, this embodiment provides a pressing device suitable for use in vehicle center console button applications. The pressing device is located above a rebound button 41 on the vehicle center console and is used to trigger the rebound button 41. It includes a fixing member 1, an elastic buffer member 3, and a trigger member 2. The main function of the fixing member 1 is to fix and limit the motion trajectory of the trigger member 2 to ensure stability and accuracy during the pressing process. Specifically, the fixing member 1 is a cubic housing structure that is fixedly mounted above the rebound button 41.

[0024] like Figures 1 to 3 As shown, the side wall of the cubic cover structure forms a fixed support portion 11, and the support portion is fixedly connected to the bearing surface of the rebound button 41 by a buckle 2311, a thread or other means to ensure the stability of the fixed support portion 11 during the pressing process. A slide rail is provided inside the cover body for sliding connection with the slider structure of the trigger member 2 to ensure that the trigger member 2 can slide smoothly and accurately along the predetermined track. Specifically, there are three slide rails, which are respectively provided on the three inner walls of the cover body. The provision of three slide rails enhances the sliding stability of the trigger member 2 and reduces the problem of offset or jamming that may be caused by the sliding of a single rail. The side wall without a slide rail is designed to be a detachable structure. After disassembling the side wall, the trigger member 2 can be easily operated, and a window for maintenance and inspection is provided, which improves the maintainability of the equipment.

[0025] The abutment portion 12 can take a variety of shapes. In this embodiment, it comprises a plate-like base 121 at the top of a cubic housing structure. A slot 122 is provided at the top of base 121 to provide space for pressing. The slot 122 allows the trigger 2 to contact this portion, effectively limiting the position of the plate-like base 121 during the rebound process. During the rebound process of the rebound button 41, the abutment portion 12 precisely controls the rebound distance of the trigger 2 through its contact with the trigger 2, preventing excessive movement or unnecessary interference.

[0026] The trigger member 2 is slidably connected to the fixed support portion 11 via a slide rail. The trigger member 2 can trigger the rebound button 41 along the sliding direction of the fixed support portion 11. The design of the trigger member 2 enables the rebound button 41 to generate a large rebound force after being pressed, driving the trigger member 2 to rebound to its initial position. The rebound process of the rebound button 41 not only triggers the rebound action, but also drives the trigger member 2 to continue traveling a distance to ensure the integrity of the rebound action. At this time, the rebound action of the trigger member 2 contacts the abutment portion 12 of the fixed member 1, limiting the rebound distance of the trigger member 2, preventing excessive rebound, and completing a complete triggering of the rebound button 41.

[0027] like Figures 4 to 6 As shown, the trigger member 2 includes a force transmission module and an operating module. The specific structure is as follows: The force transmission module has a columnar pressure portion 21. A limit slider 22 (guide rail) is fixed to the side wall of the pressure portion 21. The bottom is used to directly contact the rebound button 41. The pressure portion 21 is also provided with an insertion channel 211 extending along the sliding direction. In this embodiment, the insertion channel 211 is a columnar deep groove. The operating module includes an inserting section 23 and an operating portion 24 connected to the inserting section 23. The operating portion 24 is button-shaped and is directly pressed by an operator. The inserting section 23 is cylindrical and passes through the slot 122 of the base 121 and is inserted into the inserting channel 211. The operating portion 24 is located on a side of the base 121 away from the rebound button 41 and is spaced a preset distance from the surface of the base 121. The lower surface of the operating portion 24 can be against the upper surface of the base 121 around the slot 122. By setting the protruding height of the operating portion 24, the overall downward stroke of the trigger member 2 can be limited to avoid damage to the rebound button 41 caused by excessive downward pressure of the trigger member 2. When in use, the force transmission module and the operating module are fixed by plugging and have integrity. The split setting makes the two easy to disassemble and facilitates internal maintenance and repair.

[0028] The elastic buffer 3 is the core component of this embodiment. The elastic buffer 3 includes at least one elastic arm 31. The length to thickness ratio of the elastic arm 31 is 5:1-10:1. One end of the elastic arm 31 is fixed to the side wall of the trigger member 2 (by snap connection or integral injection molding), and the other end extends along the abutment surface of the trigger member 2, and a contact protrusion 32 is provided on the contact side of the extended end. Through the cantilever extension design of the elastic arm 31, the rebound impact force is converted into the bending deformation energy of the arm. The elastic buffer 3 can be integrally molded with the trigger member 2 or connected to the trigger member 2 through a buffer member to ensure that the elastic arm 31 can always maintain linkage with the trigger member 2 during the rebound process. Its purpose is to contact the abutment portion 12 before the trigger portion during the rebound process of the trigger member 2. The specific material can be an elastic plastic material, or it can be metal or other elastic materials. When the trigger member 2 triggers the rebound button 41, the contact distance between the abutment surface of the elastic buffer member 3 and the abutment portion 12 is smaller than the contact distance between the abutment surface of the trigger member 2 and the abutment portion 12. When the rebound button 41 drives the trigger member 2 to rebound, the elastic buffer member 3 first touches the abutment portion 12, thereby reducing the rigid collision noise without sacrificing the linearity of the touch.

[0029] Furthermore, the elastic support arm 31 is also provided with a contact protrusion 32, which can be of various shapes, such as hemispherical, wedge-shaped, etc. In this embodiment, the contact protrusion 32 is a buckled hemispherical shape arranged at the extension end of the elastic support arm 31, and the top end protrudes a set height relative to the abutment surface of the trigger member 2. The design of the contact protrusion 32 ensures that during the rebound process, when the trigger member 2 rebounds to the initial position, the contact protrusion 32 will contact the abutment portion 12 before the abutment surface of the trigger member 2, ensuring that when the trigger member 2 rebounds, the protrusion can quickly contact the abutment portion 12 and trigger the deformation energy absorption function of the elastic support arm 31. Due to the provision of the contact protrusion 32, the shape of the elastic support arm 31 can be set to be flush with the abutment surface of the trigger member 2.

[0030] The deformation of the elastic arm 31 primarily depends on the properties of the elastic material. Specifically, in this embodiment, the elastic arm 31 is made of polyurethane, with a Shore hardness of 80A, exhibiting excellent hysteresis and energy absorption capabilities. When the contact protrusion 32 contacts the abutment portion 12, the elastic arm 31 preferentially absorbs the impact energy through bending, thereby reducing vibration and noise during the rebound process.

[0031] The height difference creates a staged buffering mechanism: at the initial rebound stage, the contact protrusion 32 preferentially contacts the abutment portion 12, triggering the deformation and energy absorption of the elastic arm 31. At the final rebound stage, the abutment surface of the trigger member 2 makes rigid contact with the sidewall of the abutment portion 12, providing the user with clear tactile feedback. This reduces rebound noise during the rebound process through the deformation and energy absorption of the elastic arm 31, ensuring the linearity and clarity of the tactile feedback.

[0032] In addition, the number of the elastic arms 31 can be adjusted according to actual needs. It is preferred to configure two or more elastic arms 31, and the distribution of these elastic arms 31 on the trigger member 2 is evenly distributed with its sliding direction axis as the central axis to form a symmetrical layout. Through the double-arm symmetrical layout design, the rebound impact force is evenly dispersed along the central axis, eliminating the eccentric load wear and vibration noise caused by unilateral load, and at the same time, the energy absorption efficiency is improved through the coordinated deformation of multiple arms, ensuring the axial symmetry and operational consistency of the tactile feedback.

[0033] Working principle and process: This pressing device achieves low-noise and high-precision triggering based on a staged buffering and coordinated deformation mechanism. Its working process can be divided into two stages: pressing stroke and rebound stroke: Compression stroke stage When the operator presses the operating module, the plug section 23 moves axially along the plug channel 211 (the sliding direction is perpendicular to the button surface), driving the pressure portion 21 of the force transmission module to press the rebound button 41 downward.

[0034] After the bottom end of the pressure portion 21 contacts the rebound button 41, the triggering action is completed by overcoming the resistance of the built-in spring of the button. At this time, the lower surface of the operating portion 24 contacts the upper edge of the groove 122 of the base 121, and the downward pressing stroke is limited by the preset spacing distance (0.5-2mm) to avoid overload.

[0035] Rebound stroke stage After the pressing force is released, the rebound button 41 pushes the pressure portion 21 upwards through its own return spring, driving the trigger member 2 to retreat as a whole.

[0036] First stage buffering: At the initial stage of rebound of the trigger member 2, the contact protrusion 32 at the end of the elastic support arm 31 first contacts the side wall of the abutment portion 12, triggering the cantilever bending deformation of the polyurethane support arm, converting the impact kinetic energy into elastic potential energy, reducing the collision noise to below 45dB.

[0037] Second stage rigid limit (tactile feedback): When the trigger member 2 continues to retract to the end stroke, the abutting surface of the pressure portion 21 is in rigid contact with the abutting portion 12, providing a clear tactile feedback of ≥0.6N through surface contact. At the same time, the slide rail and the limit slider 22 cooperate to constrain the axial displacement, ensuring that the trigger member 2 is accurately reset.

[0038] Synergistic Effect: The symmetrically distributed elastic arms 31 evenly distribute the impact load along the central axis, eliminating wear differences caused by eccentric loading; The split plug-in structure design, combined with the detachable cover side wall, allows for quick separation of the operating module and the force transmission module during maintenance, allowing direct access to internal components. Through timing difference control and deformation space distribution, it takes into account both energy absorption and noise reduction and tactile clarity.

[0039] Example 2 like Figure 7 、 Figure 8As shown, this embodiment provides another embodiment of a pressing device. Its overall structure is identical to that of Example 1, except that the elastic buffer member 3 has been improved. The extended end of the elastic arm 31 extends along the outer contour of the abutment surface of the trigger member 2, forming an extension segment. A clearance gap 33 is provided between the extension segment and the side wall of the trigger member 2, forming a U-shaped space. The close-fitting layout of the extension segment along the outer contour of the trigger member 2 and the coordinated design of the clearance gap 33 significantly reduce the space occupied by the elastic arm 31 and position the contact protrusion 32 as close as possible to the abutment surface of the trigger member 2. This prioritizes the deformation and energy absorption of the elastic arm 31 during rebound, shortening the buffer response time. Furthermore, the U-shaped clearance gap 33 provides dynamic deflection space for the extension segment to deform, completely eliminating the risk of friction between the extension segment and the side wall of the trigger member 2 and preventing the additional noise generated by friction between the extension segment and the side wall of the trigger member 2. Furthermore, the assembly tolerance requirement is relaxed to ±0.1 mm, improving energy absorption efficiency while reducing processing costs, resulting in an improved solution that combines the advantages of compactness, durability, and noise reduction.

[0040] Example 3 like Figures 9 to 12 As shown, this embodiment provides another implementation method of the pressing device, and its overall structure is the same as that of Example 2, except that the elastic buffer member 3 is further improved. In this embodiment, the elastic support arm 31 is inclined toward the abutting portion, and the extension section is set in an arc, so that when the elastic support arm 31 is deformed to the point where the trigger member 2 abuts against the ground contact portion, the elastic support arm 31 is set straight, and the upper surface is in contact with the abutting portion 12 at the same time.

[0041] This embodiment provides another implementation method of a pressing device, the overall structure of which is the same as that of the second embodiment, except that the deformation path and contact mode of the elastic buffer member 3 are improved. The elastic support arm 31 extends outward from the fixed end of the side wall of the trigger member 2 at an inclination angle of 5-15°, and the extended end is an arc-shaped curved structure with a radius greater than 10mm, so that the elastic support arm 31 maintains an inclined cantilever state when the trigger member 2 is not pressed. When the trigger member 2 rebounds to the abutment portion 12, the arc-shaped extension section is squeezed and deformed to a straight state. At this time, the upper surface of the elastic support arm 31 forms a full contact surface with the abutment portion 12, and at the same time, the abutment surface of the trigger member 2 and the abutment portion 12 complete rigid limiting. The arc-shaped extension design makes the stress distribution uniform during the deformation of the support arm.

[0042] In this embodiment, the design of the elastic arm 31 being arranged flat when the trigger member 2 contacts the abutment portion 12 is primarily optimized for noise suppression and tactile feedback linearity: when the extension section is deformed to a flat state, the upper surface of the elastic arm 31 forms a full contact surface with the abutment portion 12. Compared to the point contact or line contact mode of the second embodiment, the pressure in the contact area is reduced by 60%-80%, effectively dispersing the collision energy and eliminating the source of high-frequency vibration noise. The flattened contact evenly distributes the reaction force of the abutment portion 12 on the trigger member 2, allowing the operator to clearly perceive the rigid limit characteristics of the rebound endpoint. The flat contact also avoids the whistling noise generated by airflow disturbances in the avoidance gap 33 of the second embodiment during high-speed rebound, concentrating the noise energy distribution more closely in the mid- and low-frequency bands, meeting the ergonomic requirements of the in-vehicle environment.

[0043] Example 4 like Figure 9 As shown, this embodiment provides another implementation of a pressing device. Its overall structure is the same as the previous embodiment, except that the inner wall of the insertion channel 211 is provided with multiple sets of locking openings 2111 at intervals along the axial direction, and the insertion section 23 of the operating module is embedded with an elastic locking mechanism 231. The elastic locking mechanism 231 consists of a V-shaped spring leaf and a hemispherical buckle 2311 at its end. In its natural state, the buckle 2311 partially protrudes from the outer surface of the insertion section 23 and is fixedly engaged with the locking opening 2111, achieving axial locking between the force transmission module and the operating module. When the buckle 2311 is pressed to radially contract and disengage from the locking opening 2111, the insertion section 23 can be moved axially along the insertion channel 211 to adjust the insertion depth, or the operating module can be directly removed as a whole.

[0044] The side wall of the removable cover provides an adjustment channel for the operator. The change in the insertion depth synchronously adjusts the preset distance between the operating part 24 and the surface of the base 121, thereby accurately controlling the rebound stroke of the trigger part 2. When the insertion depth increases, the rebound stroke is shortened and the tactile feedback force is enhanced, and vice versa, the stroke is extended and the force is soft. This design uses a modular adjustable structure to achieve a single device that adapts to key scenarios with different key travel requirements (such as emergency keys with short travel and high feedback and entertainment keys with long travel and low feedback), and during maintenance, damaged modules can be quickly replaced without disassembling the entire machine; the rigid snap-fit ​​of the elastic locking mechanism 231 can eliminate the gap and abnormal noise caused by traditional threaded adjustment, while the radial limiting ability of the V-shaped spring sheet ensures the stability of the module connection and avoids accidental disconnection due to vibration.

[0045] Another embodiment of the present invention further provides a press switch 4, comprising a switch body and a pressing device, wherein the switch body comprises a rebound button 41, wherein the pressing device is the pressing device described in any of the above embodiments.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pressing device for triggering a rebound button, characterized in that: include: A fixing member, buckled on the rebound button, comprising a fixing support portion and an abutting portion connected to each other; a trigger member slidably connected to the fixed support portion and capable of triggering the rebound button along the sliding direction with the fixed support portion; when the trigger is completed, the rebound button drives the trigger member to rebound to the initial position, at which time, the trigger member abuts against the abutment portion of the fixed member; An elastic buffer is connected to the trigger member. When the trigger member triggers the rebound button, a contact distance between the abutting surface of the elastic buffer and the abutting portion is smaller than a contact distance between the abutting surface of the trigger member and the abutting portion.

2. The pressing device according to claim 1, wherein: A contact area between the elastic buffer and the abutting portion is smaller than a contact area between the trigger and the abutting portion.

3. The pressing device according to claim 1, wherein: The abutting portion includes a base and a slot provided on the base, and the trigger member slides through the slot; The elastic buffer member includes at least one elastic arm, one end of which is fixed to the side wall of the trigger member, and the other end of which extends along the abutting surface of the trigger member, and a contact protrusion is provided on the contact side of the extended end; The top end of the contact protrusion protrudes by a set height relative to the abutting surface of the trigger member, so that when the trigger member rebounds to the initial position, the contact protrusion contacts the abutting portion before the abutting surface of the trigger member.

4. The pressing device according to claim 3, wherein: The extending end of the elastic support arm extends along the outer contour of the abutting surface of the trigger member to form an extension section; An avoidance gap is provided between the extension section and the side wall of the trigger member.

5. The pressing device according to claim 4, wherein: A concave receiving groove is provided on the side wall of the abutting surface of the trigger member, and the extending section of the elastic support arm is at least partially received in the receiving groove.

6. The pressing device according to claim 3, wherein: At least two elastic supporting arms are provided, and are evenly distributed around the trigger member with the sliding direction axis of the trigger member as the central axis.

7. The pressing device according to claim 3, wherein: The contact protrusion includes a hemispherical protrusion.

8. The pressing device according to any one of claims 3 to 7, characterized in that: The triggering member includes: The force transmission module includes a pressure portion and a limit slider fixedly connected to the pressure portion, wherein the pressure portion directly contacts and drives the trigger end of the rebound button, and the pressure portion is further provided with an insertion channel extending along the sliding direction; An operating module, comprising an inserting section and an operating portion connected to the inserting section, wherein the inserting section passes through the slot of the base body and is inserted into the inserting channel; The operating portion is located on a side of the base body away from the rebound button and is spaced a preset distance from the surface of the base body.

9. The pressing device according to claim 8, characterized in that At least two elastic locking mechanisms are provided on the outer periphery of the plug-in section, and the elastic locking mechanisms are distributed at intervals along the axial direction of the plug-in section; The inner wall of the plug-in channel is provided with locking openings corresponding to the elastic locking mechanism, and the locking openings are provided with at least two groups; The elastic locking mechanism includes an elastic member and a buckle provided at the end thereof. In a natural state, the buckle partially protrudes from the outer surface of the plug-in section and is fixedly engaged with the locking opening.

10. A push switch, comprising a switch body and a pressing device, wherein the switch body comprises a rebound button, characterized in that: The pressing device is the pressing device according to any one of claims 1 to 9.

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