recording device

Abstract

The embodiment of the application provides a recording device, which comprises a shell, a key structure and an elastic piece. The shell has a containing cavity for accommodating a control circuit. The control circuit is provided with a switch piece on the side facing the mounting groove. The key structure comprises a pressing piece and a plurality of trigger pieces. The plurality of trigger pieces are integrally formed on one end face of the pressing piece. The trigger pieces are protruded on the pressing piece along a first axis. The trigger pieces are arranged in the shell. The trigger pieces and the shell are in clearance fit or transition fit. Along the first axis, the cross-sectional area of the trigger pieces is S1, and the area of the end face of the pressing piece for connecting the trigger pieces is S2. S1 and S2 satisfy S1 / S2 = 0.1-1. The elastic piece is arranged on the moving path of the key structure. The elastic piece is accommodated in the containing groove. The elastic piece is suitable for providing the key structure moving towards the switch piece with a rebound force opposite to the moving direction. The stability of the key structure is improved, and the key structure is not prone to lateral tilting during long-time use.

Description

Technical Field

[0001] This application relates to the field of recording equipment technology, and more particularly to a recording device. Background Technology

[0002] With the development of artificial intelligence and speech recognition technology, more and more electronic products based on speech processing technology are becoming popular. Voice recorders, as one such electronic product capable of recording audio, are widely loved by users in both work and daily life. Voice recorders typically contain microphones, circuit boards, and other components to enable them to record audio.

[0003] The voice recorder in this technology has a sensor inside. By pressing the sensor from the outside of the recorder's casing, the sensor will send the pressure feedback to the circuit board, which can control the recorder, including controlling the recorder to turn on and off, or it can also control the recorder's focus recording function. Utility Model Content

[0004] This application provides a recording device that increases the stability of the button structure, making it less prone to tilting during prolonged use.

[0005] This application provides a recording device, including a housing, a button structure, and an elastic element. The housing has a receiving cavity for accommodating a control circuit. A switch is provided on one side of the control circuit. The button structure includes a pressing element and several trigger elements. The trigger elements are connected to one end face of the pressing element. The trigger elements protrude from the pressing element along a first axis and pass through the housing. The trigger elements and the housing are clearance-fitted or transition-fitted. Under external force, the trigger elements move toward the switch element to trigger the switch element. Along the first axis, the cross-sectional area of ​​the trigger element is S1, and the area of ​​the end face of the pressing element used to connect the trigger element is S2. S1 and S2 satisfy: S1 / S2=0.1-1. The elastic element is disposed on the movement path of the button structure and is adapted to provide a rebound force opposite to the movement direction for the button structure moving toward the switch element.

[0006] This application allows for the reasonable setting of the dimensions of the trigger and the press by setting the ratio between the cross-sectional area S of the trigger element and the area S of the end face of the press element used to connect the trigger element. This ensures the bending strength of the connection position between the trigger and the press element and makes it less likely for the trigger element to tilt relative to the housing, thereby improving the stability of the button structure.

[0007] In one possible implementation, S1 / S2 is any value between 0.2 and 0.9; or S1 / S2 is any value between 0.3 and 0.8; or S1 / S2 is any value between 0.4 and 0.7; or S1 / S2 is any value between 0.5 and 0.6.

[0008] In one possible implementation, the cross-sectional areas of the triggers are equal along the first axis.

[0009] In one possible implementation, the trigger is cylindrical, with one end of the trigger connected to the center of the pressing element along its axial direction.

[0010] In one possible implementation, the housing is provided with a mounting groove communicating with the accommodating cavity, the pressing member is located in the mounting groove, and a gap is provided between the peripheral wall of the pressing member and the inner wall of the mounting groove.

[0011] In one possible implementation, a gap of 0.01 mm or more and 0.07 mm or less is provided between the peripheral wall of the pressing element and the inner wall of the mounting groove.

[0012] In one possible implementation, the trigger stroke of the switch is parallel to the first direction, and the path of the button structure moving toward the switch is parallel to the first direction, or forms an angle with the first direction, wherein the angle is an acute angle.

[0013] In one possible implementation, along the first direction, the pressing member has a pressing surface facing away from the trigger member, the pressing surface being flush with the upper end face of the housing, or the pressing surface being at least partially lower than the upper end face of the housing.

[0014] In one possible implementation, the circumferential edge of the pressing surface is adjacent to the upper end face of the housing. When the upper end face of the housing is curved, in a first direction, the height of the circumferential edge of the pressing surface is flush with the height of its adjacent upper end face, or the height of the circumferential edge of the pressing surface is lower than the height of its adjacent upper end face.

[0015] In one possible implementation, when the button structure moves toward the switch element, the shortest distance between the pressing surface and the upper end surface of the housing is greater than or equal to 0 mm and less than or equal to 1.2 mm.

[0016] In one possible implementation, the pressing surface is curved, and along a first direction, the curved surface bends toward the trigger.

[0017] In one possible implementation, the pressing surface is a flexible material surface, or the pressing surface is provided with a flexible material layer.

[0018] In one possible implementation, the pressing surface is provided with multiple raised dots, or with grid stripes.

[0019] In one possible implementation, the button structure also includes a side portion, which is arranged in a ring shape, with the inner ring of the side portion forming a receiving groove, and the elastic element located within the receiving groove.

[0020] In one possible implementation, the side portion is adapted to be inserted into the mounting groove, the side wall of the side portion is provided with a foolproof groove, the inner wall of the mounting groove is provided with a foolproof element, and when the side portion is inserted into the mounting groove, the foolproof element is adapted to be inserted into the foolproof groove.

[0021] In one possible implementation, the housing is provided with a perforation that extends through the housing and connects to the receiving cavity, and the trigger element passes through the perforation.

[0022] In one possible implementation, a first groove is formed on the peripheral wall of the trigger, and a limiting member suitable for suppressing the tilting of the trigger is inserted into the first groove. The limiting member is adapted to abut against the inner wall of the housing.

[0023] In one possible implementation, the peripheral wall of the trigger is further provided with a second groove around the first axis, and a sealing ring is provided in the second groove. When the trigger is inserted into the through hole, the sealing ring fits against the inner wall of the through hole.

[0024] In one possible implementation, along the direction of the first axis, the distance between the opposite end walls of the second groove is greater than or equal to 0.25 and less than or equal to 1.

[0025] In one possible implementation, the housing is provided with a protrusion located at the bottom of the mounting groove and covering the through hole, the through hole penetrating the protrusion, and the button structure also includes a guide member circumferentially disposed on the side wall of the protrusion.

[0026] In one possible implementation, a sound insulation element is also included, which is connected to the control circuit and covers the switch element.

[0027] In one possible implementation, a microphone is also included, which is connected to the control circuit. The inner wall of the housing is provided with a baffle extending toward the control circuit and surrounding the microphone.

[0028] In one possible implementation, the end of the enclosure near the control circuit is connected to the control circuit via a sound-absorbing component.

[0029] In one possible implementation, the housing includes a first housing and a second housing, which are connected to each other and enclose a receiving cavity.

[0030] In one possible implementation, the elastic element has a plurality of interconnected corrugated segments, which are spaced apart along a first direction, and adjacent corrugated segments are bent toward each other at least at opposite locations along the first direction.

[0031] In one possible implementation, multiple corrugated segments are arranged around a second axis parallel to the first direction. Each corrugated segment has at least one crest and at least one trough along its surrounding path. The crest and trough are curved structures extending in the opposite direction to the first direction. The crest of one of two adjacent corrugated segments and the trough of the other are arranged correspondingly in the first direction.

[0032] In one possible implementation, along the first direction, the cross-section of the elastic element is an annular structure, and the radial dimension of the outer ring of the annular structure is D, where D satisfies: 3mm≤D≤9mm.

[0033] In one possible implementation, the outer ring radial dimension D of the ring structure is any value between 4 mm and 8 mm; or, the outer ring radial dimension D of the ring structure is any value between 5 mm and 7 mm; or, the outer ring radial dimension D of the ring structure is any value between 5.7 mm and 6.3 mm.

[0034] In one possible implementation, the distance between the inner ring wall and the outer ring wall of the annular structure along the radial direction of the annular structure is L1, where L1 satisfies: 0.3mm≤L1≤1mm.

[0035] In one possible implementation, the distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.4 mm and 0.9 mm; or, the distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.5 mm and 0.8 mm; or, the distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.6 mm and 0.7 mm.

[0036] In one possible implementation, the thickness of the corrugated segment along the first direction is H, where H satisfies: 0.08mm ≤ H ≤ 0.13mm.

[0037] In one possible implementation, the distance between the opposite ends of the elastic element along the first direction is M, where M satisfies: 1.1mm ≤ M ≤ 2.4mm.

[0038] In one possible implementation, the distance M between the opposite ends of the elastic element is any value between 1.3mm and 2.2mm; or, the distance M between the opposite ends of the elastic element is any value between 1.5mm and 2.0mm; or, the distance M between the opposite ends of the elastic element is any value between 1.6mm and 1.9mm.

[0039] In one possible implementation, a movable space is formed between the button structure and the housing, the movable space extends along a first direction, an elastic element is located within the movable space, and one end of the elastic element along the first direction is connected to the button structure. The size of the movable space along the first direction is F, where F≤1.1mm.

[0040] In one possible implementation, the button structure and the switch element are spaced apart along the first direction, and the distance between the button structure and the switch element is L2, where L2 satisfies: 0.25mm≤L2<1.1mm.

[0041] In one possible implementation, the distance L2 between the button structure and the switch element is any value between 0.3mm and 1.0mm; or, the distance L2 between the button structure and the switch element is any value between 0.5mm and 0.8mm.

[0042] In one possible implementation, the elastic element is spirally arranged around a second axis along a first direction, with each spiral segment forming a corrugated segment; or

[0043] The elastic element consists of multiple independent corrugated segments, which are closed-loop ring structures, with the crests and troughs of two adjacent corrugated segments connected together.

[0044] In one possible implementation, the elastic element is made of a metallic material. Attached Figure Description

[0045] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0046] Figure 1 Exploded view of the recording device provided in this application;

[0047] Figure 2 An exploded view of the button structure provided in this application;

[0048] Figure 3 A cross-sectional view of the button structure provided in this application;

[0049] Figure 4 A side view of the button structure provided in this application;

[0050] Figure 5 A cross-sectional view of the recording device provided in this application;

[0051] Figure 6 A cross-sectional view of the elastic element provided in this application;

[0052] Figure 7 Another cross-sectional view of the elastic element provided in this application.

[0053] Explanation of reference numerals in the attached figures:

[0054] 10. Housing; 11. First housing; 111. Mounting groove; 112. Protrusion; 1121. Perforation; 113. Enclosure; 114. Muffler; 115. Foolproofing element; 12. Middle frame; 13. Second housing; 14. Receiving cavity; 15. Sound insulation element; 20. Button structure; 21. Pressing element; 211. Pressing surface; 212. Connecting surface; 22. Side; 221. Foolproofing groove; 23. Trigger; 231. First groove; 232. Second groove; 24. Limiting element; 25. Sealing ring; 26. Receiving groove; 27. Guide element; 30. Elastic element; 31. Corrugated section; 311. Crest; 312. Trough; 40. Main board; 41. Switch; 50. Microphone.

[0055] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0056] As known from the background technology, the voice recorder of this technology has a pressing area on its casing, and a pressing sensor is installed on the control circuit inside the casing, located at the pressing area. When a finger presses the pressing area, the sensor detects the pressure and controls the voice recorder's on / off state. Furthermore, during the recording process, repeatedly pressing the pressing area can activate the recorder's priority recording function.

[0057] The aforementioned method of controlling the recorder by receiving pressure from the outside of the housing via an internal sensor provides insufficient feedback. After a finger presses the button, it's difficult to detect whether the recorder is on or off, affecting control accuracy. Therefore, related technologies employ a mechanical button-triggered switch to control the recorder's on / off state, enhancing the feedback effect when the recorder is triggered.

[0058] However, when pressing buttons in daily life, the pressure is not always along the direction of the button's movement. That is to say, the pressure applied when pressing a button is often at an angle to the direction of the button's movement. This will apply a force perpendicular to the button's axis. Pressing the button for a long time will cause the button to tilt in the direction perpendicular to its axis (that is, perpendicular to its direction of movement), which will make the button and the housing prone to shaking.

[0059] Based on this, this application provides a recording device that modifies the press button. By limiting the size of the button, the strength of the button in the direction perpendicular to its movement can be increased, so that the button is less likely to tilt when there is an angle between the pressing force and the movement direction of the button.

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] See Figure 1 , Figure 2 and Figure 5 As shown, the recording device of this application includes a housing 10, a control circuit 40, a button structure 20, and an elastic element 30. The housing 10 serves as the overall frame of the recording device, and its shape and dimensions define the overall shape and dimensions of the recording device. The housing 10 serves as the mounting carrier for other structures of the recording device; the control circuit 40, button structure 20, and elastic element 30 can all be mounted on the housing 10. The housing 10 also serves to protect the structures mounted on it. The housing 10 of this application can be made of metal, or it can be made of polymer materials such as plastic, or it can be partially made of metal and partially made of other materials; no special limitations are made here.

[0062] The control circuit 40 of this application is installed in the housing 10, and a receiving cavity 14 is provided inside the housing 10. The control circuit 40 is located in the receiving cavity 14. The control circuit 40 is an important structure of the recording device, and it integrates components such as a receiver and a transcriber for receiving sound and saving the received voice, or it can convert the voice into text for output. The control circuit 40 also integrates a power supply and a transmission module. The power supply provides power to the recording device, and the transmission module can be a Bluetooth module or a WIFI module for wireless connection with mobile devices such as mobile phones and computers. In addition, the control circuit 40 is also provided with a switch 41, which is used to turn the recording device on and off. Touching the switch 41 turns on the recording device, allowing the recording device to start recording. The recording device can be turned off by pressing and holding the switch 41 or by pressing the switch 41 repeatedly.

[0063] The housing 10 is provided with a mounting groove 111, which is connected to the accommodating cavity 14. The switch 41 is located in the control circuit 40 at the position corresponding to the mounting groove 111.

[0064] The button structure 20 includes a pressing element and several trigger elements. The trigger elements are connected to one end face of the pressing element. The trigger elements protrude from the pressing element along a first axis E, and pass through the housing. The trigger elements and housing are clearance-fitted or transition-fitted. Under external force, the trigger elements move towards the switching element to trigger it. Along the first axis E, the cross-sectional area of ​​the trigger element 23 is S1, and the area of ​​the end face of the pressing element 21 used to connect to the trigger element 23 is S2. S1 and S2 satisfy: S1 / S2 = 0.1 - 1. It should be noted that the first axis E is the central axis of the trigger element 23. Figure 3 The dashed line E shown represents...

[0065] It should be noted that the pressing member 21 is a flat structural component with a certain thickness. One end of the trigger member 23 is connected to an end face in the thickness direction of the pressing member 21, and the trigger member 23 extends from the end face of the pressing member 21 connected to it in a direction away from the pressing member 21. The extension direction of the trigger member 23 is the direction of its first axis E.

[0066] It is understood that one or more trigger elements 23 can be provided. When multiple trigger elements 23 are provided, all multiple trigger elements 23 extend along the first axis E, and the shape and size of the multiple trigger elements 23 can be the same or partially the same. This application uses the button structure 20 with one trigger element 23 as an example for illustration.

[0067] It is understandable that the button structure 20 can directly trigger the switch element 41. For example, if the switch element 41 is located on the movement path of the button structure 20, it can drive the button structure 20 to move towards the switch element 41 until the button structure 20 abuts against the switch element 41. Continuing to move the button structure 20 can press the switching portion of the switch element 41 to control the opening and closing of the recording device. Alternatively, the button structure 20 can also indirectly trigger the switch element 41. For example, if a flexible or movable element is provided between the button structure 20 and the switch element 41, the button structure 20 can trigger the switch element 41 by pressing against the flexible or movable element.

[0068] It should be noted that the switch 41 is a push-button switch. Therefore, the trigger end of the switch 41 is movable. The trigger end of the switch 41 can be pressed by the button structure 20, so that the trigger end moves along the trigger stroke to realize the closing or closing of the switch.

[0069] The elastic element 30 is housed in the receiving groove 26 and is disposed on the movement path of the button structure 20, specifically on the path where the button structure 20 moves toward the switch element 41. When an external force drives the button structure 20 to move toward the switch element 41, it will press against the elastic element 30. Thus, the elastic element 30 is adapted to provide a rebound force opposite to the direction of movement for the button structure 20 moving toward the switch element 41. When the external force is removed, the rebound force of the elastic element 30 can force the button structure 20 to disengage from the switch element 41 and return to its original position.

[0070] This application incorporates a button structure 20, which includes an integrally formed pressing element 21 and a trigger element 23. The trigger element 23 passes through the housing 10 and has a transition fit or clearance fit with the housing 10. It is understood that the pressing element 21 is adapted to receive external pressure, thereby driving the trigger element 23 to move and trigger the switch element 41. The button structure 20 and the housing 10 form a mechanical connection structure. When the button structure 20 is pressed, the travel of the button structure 20 towards the switch element 41 provides a strong feedback effect. The movement of the button structure 20 can be used to determine whether the switch element 41 has been successfully triggered, increasing control accuracy.

[0071] It is understood that the trigger element 23 is inserted into the housing 10, and the trigger element 23 is a structural component extending along the first axis E. The thickness of the trigger element 23 is directly related to whether the button structure 20 is prone to tilting during use. For example, the thicker the trigger element 23, the stronger the connection stability between it and the pressing element 21, and the stronger its bending strength. When it is inserted into the housing 10 and the button is pressed, it is less likely to tilt between the trigger element 23 and the pressing element, or between the trigger element 23 and the housing 10. This application sets the ratio between the cross-sectional area S1 of the trigger element 23 and the area S2 of the end face of the pressing element 21 used to connect the trigger element 23, so as to reasonably set the dimensions of the trigger element 23 and the pressing element 21, to ensure the bending strength of the connection position between the trigger element 23 and the pressing element 21, and to make the trigger element 23 less likely to tilt relative to the housing 10, thereby improving the stability of the button structure 20.

[0072] In some embodiments, S1 / S2 is 0.1, 0.2, 0.21, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, or 1. Preferably, S1 / S2 is 0.21. S1 / S2 can be any value between 0.2 and 0.9; or any value between 0.3 and 0.8; or any value between 0.4 and 0.7; or any value between 0.5 and 0.6.

[0073] In some embodiments, the pressing member 22 and the trigger member 23 can be integrally formed or separately disposed. When the pressing member 22 and the trigger member 23 are separately disposed, there are various ways to connect them, such as by screws or by adhesive. This application describes the connection of the two by adhesive as an example.

[0074] When the pressing member 22 and the trigger member 23 are bonded, an adhesive is provided between the pressing member 22 and the trigger member 23. For example, glue can be applied to the end face of the trigger member 23 facing away from the trigger member 23 or high-viscosity double-sided adhesive can be applied to the end face of the trigger member 23 facing away from the trigger member 23. Then, one end face of the pressing member 22 is pressed against the position of the trigger member 23 where glue is applied or double-sided adhesive is applied.

[0075] In some embodiments, the cross-sections of the trigger member 23 along the first axis E are all equal. The trigger member 23 can be of various shapes, such as square or cylindrical. This application uses a cylindrical trigger member 23 as an example for illustration. The pressing member 21 can be square or circular, etc., without special limitation. One end of the trigger member 23 along the first axis E is connected to the center of the pressing member 21. If the pressing member 21 is a regular shape, such as square or cylindrical, the central axis of the trigger member 23 and the central axis of the pressing member 21 are coaxial.

[0076] In some embodiments, the elastic element 30 is made of a metallic material. For example, the material of the elastic element 30 can be alloy steel made by adding alloying elements such as silicon, manganese, chromium, and vanadium to carbon steel, or stainless steel, or carbon steel. The trigger element 23 is a metallic material component, which can ensure the compressive strength of the trigger element 23.

[0077] In some possible implementations, the housing 10 is provided with a mounting groove 111 communicating with the accommodating cavity 14, the pressing member 21 is movably disposed in the mounting groove 111 and is adapted to receive external force, the trigger member 23 passes through the housing 10 and is partially located in the accommodating cavity 14, and the trigger member 23 is adapted to trigger the switch member 41.

[0078] In some embodiments, along the first direction, a mounting groove 111 is formed at the position of the housing 10 corresponding to the button structure 20. The mounting groove 111 can be a through groove that penetrates the housing 10 or a recessed groove. This application uses a recessed groove as an example for description. The pressing member 21 passes through the mounting groove 111, and a gap is provided between the peripheral wall of the pressing member 21 and the inner wall of the mounting groove 111. The mounting groove 111 has an opening formed on the end face of the housing 10, so that the pressing member 21 of the button structure 20 can contact the external environment through the mounting groove 111.

[0079] It should be noted that the shape of the mounting groove 111 is the same as that of the pressing member 21, and the size of the mounting groove 111 is slightly larger than that of the pressing member 21. In this way, the pressing member 21 can be inserted into the mounting groove 111, ensuring that the pressing member 21 can move within the mounting groove 111.

[0080] For example, a gap of 0.01 mm or more and 0.07 mm or less is provided between the peripheral wall of the pressing member 21 and the inner wall of the mounting groove 111.

[0081] The pressing member 21 of this application can be of various shapes, such as square or round. This application will use a round pressing member 21 as an example for explanation. In this case, the mounting hole is also round.

[0082] For ease of explanation, this application embodiment introduces a Cartesian coordinate system, wherein the X-axis is parallel to a first direction, which is parallel to the height direction of the recording device; the Y-axis is parallel to a second direction, which is parallel to the width direction of the recording device; and the Z-axis is parallel to a third direction, which is parallel to the length direction of the recording device. The second axis is the dashed line K in the figure.

[0083] It should be noted that the button structure 20 moves toward the switch element 41, and the direction of movement of the button structure 20 is not limited, as long as it can smoothly press the trigger end of the switch element 41, causing its trigger end shell to move along its trigger stroke. For example, the direction of movement of the trigger end of the switch element 41 in this application (i.e., the direction of the trigger stroke) can be set to be parallel to the first direction, and the path of movement of the button structure 20 can be parallel to the first direction. In this case, the button structure 20 moves directly toward the switch element 41 in the first direction. Alternatively, the direction of movement of the button structure 20 can be at an angle to the trigger stroke of the switch element 41, that is, the button structure 20 can also move obliquely toward the switch element 41. When the direction of movement of the button structure 20 is at an angle to the trigger stroke of the switch element 41, the angle is an acute angle.

[0084] In some embodiments, along the first direction, the connecting end face of the pressing member 21 and the trigger member 23 is a connecting surface 212, and the end of the pressing member 21 facing away from the trigger member 23 is provided with a pressing surface 211. When an external force is applied to the pressing member 21, the pressing force is usually applied to the pressing surface 211. In this application, the pressing surface 211 is flush with the upper end face of the housing 10, or the pressing surface 211 is at least partially lower than the upper end face of the housing 10. It should be noted here that the upper end face of the housing 10 refers to the end face of the housing 10 where the mounting hole is located away from the internal receiving cavity 14, that is, the outer surface of the housing 10 used to open the mounting hole. By setting the pressing surface 211 of the pressing member 21 to be flush with or lower than the surface of the housing 10, it is possible to prevent the pressing member 21 from protruding from the surface of the housing 10, thus preventing the problem of the recording device being turned on due to accidental contact with the pressing member 21.

[0085] It is worth mentioning that the upper surface of the housing 10 can be a plane or a curved surface. When the upper surface of the housing 10 is a plane, the height of the pressing surface 211 is lower than the height of the upper surface of the housing 10 in the first direction. When the upper surface of the housing 10 is a curved surface, the height of the upper surface of the housing 10 at different positions in the first direction may be different. In this case, the height of the pressing surface 211 in the first direction needs to be set according to the height of the upper surface of the housing 10. Specifically, when the pressing member 21 is connected to the housing 10, the circumferential edge of the pressing surface 211 is adjacent to the upper surface of the housing 10. Thus, in the first direction, the height of the circumferential edge of the pressing surface 211 can be set to be flush with the height of its adjacent upper surface, or the height of the circumferential edge of the pressing surface 211 can be set to be lower than the height of its adjacent upper surface. This prevents the edge of the pressing surface 211 from protruding from the upper surface of the housing 10. Then, based on the curvature of the upper surface, the pressing surface 211 is set as a curved surface that is recessed towards the inside of the housing 10, so that the pressing surface 211 is lower than the upper surface of the housing 10.

[0086] In this application, the height of the circumferential edge of the pressing surface 211 is preferably set to be flush with the upper surface of the adjacent housing 10. This ensures the smoothness of the button edge and provides a better feel when the finger presses it.

[0087] See Figures 1 to 5 As shown, in some embodiments, the pressing surface 211 is curved along the first direction, and the curved surface bends toward the trigger 23. By setting the pressing surface 211 as a curved surface that bends toward the trigger 23, it can concentrate the stress. When pressing force is applied to the pressing surface 211, the pressing force can be concentrated in the middle position and transmitted to the trigger 23, and then to the switch 41, making it easier to press the switch 41.

[0088] Furthermore, by making the pressing surface 211 curved, it can be distinguished from the surface of the housing 10. Thus, when the recording device is applied to a mobile phone and attached to the back of the phone, the user can quickly find the pressing surface 211 for blind operation. In addition, the button structure 20 of this application is located at the corner of the housing 10. For example, when the recording device is attached to the back of the phone, the button structure 20 is located in the upper left or upper right corner. When holding the phone, the index finger can just touch the pressing surface 211, making it convenient to press the button structure 20 during a call.

[0089] In addition to setting the pressing surface 211 as a curved surface, quick blind operation of the pressing surface 211 can also be achieved in the following ways:

[0090] For example, the pressing surface 211 can be made of a flexible material, or a flexible material layer can be applied to the surface of the pressing surface 211, and then the housing 10 can be made of a rigid material.

[0091] Alternatively, the pressing surface 211 can be made of a material with a rougher texture, so that the difference between the pressing surface 211 and the housing 10 can be quickly distinguished;

[0092] Alternatively, multiple raised dots may be provided on the surface of the pressing surface 211; or, grid stripes may be provided on the surface of the pressing surface 211, etc.

[0093] In some embodiments, the end face of the first housing 11 facing away from the second housing 13 is the upper end face of the housing 10, and this end face is designated as end face P. The mounting hole is opened from this end face toward the second housing 13. The entire end face of the pressing surface 211 is lower than end face P. In this way, the first housing 11 forms a recess at the position of the pressing surface 211, which can prevent accidental activation of the pressing member 21 due to the pressing surface 211 protruding from the first housing 11, and avoid accidental activation of the switch member 41.

[0094] For example, the minimum distance between the pressing surface 211 and the end face P can be 0mm. In this case, the periphery of the pressing surface 211 is flush with the upper end face of the first housing 1110, or the middle position of the pressing surface 211 is flush with the upper end face of the first housing 1110. According to the actual movement stroke of the button structure 20, when the button structure 20 moves towards the switch member 41 in the first direction, the shortest distance between the pressing surface 211 and the surface of the housing 10 is greater than or equal to 0mm and less than or equal to 1.2mm.

[0095] See Figures 1 to 5As shown, in some possible implementations, the button structure 20 further includes a side portion 22, which is arranged in a ring shape, and the inner ring of the side portion 22 surrounds and forms a receiving groove 26. The receiving groove 26 can be of various shapes, including but not limited to square or circular. This application uses a circular groove as an example for illustration. The central axis of the trigger member 23 and the central axis of the receiving groove 26 are coaxially arranged. One end of the side portion 22 along the central axis is connected to the edge of the pressing member 21 facing the trigger member 23, and the side portion 22 protrudes from the pressing member 21 in a direction away from the pressing surface 211 of the pressing member 21. The side portion 22 and the trigger member 23 are spaced apart. The side portion 22 is adapted to be inserted into the mounting groove 111. When the side portion 22 is inserted into the mounting groove 111, its sidewall faces the inner wall of the mounting groove 111. A foolproof groove 221 is provided on the side wall of the side portion 22 facing away from the trigger member 23. The foolproof groove 221 is formed on the side wall of the side portion 22 facing away from the press member 21 and has a notch. A foolproof member 115 protrudes from the inner wall of the mounting groove 111 toward the center of the mounting groove 111. When the side portion 22 is inserted into the mounting groove 111, the foolproof member 115 is adapted to be inserted into the foolproof groove 221. By providing the foolproof member 115 protruding from the inner wall of the mounting groove 111 and providing the foolproof groove 221 that matches the foolproof member 115 on the side wall of the side portion 22, the accurate position of the button structure 20 when connected to the mounting groove 111 can be ensured. Specifically, the button structure 20 can only be successfully installed into the mounting slot 111 when the anti-misalignment groove 221 and the anti-misalignment component 115 are installed facing each other. When the anti-misalignment groove 221 and the anti-misalignment component 115 are misaligned, since the anti-misalignment component 115 is a protruding structure, the side wall of the side portion 22 cannot provide a structure (anti-misalignment groove 221) for the anti-misalignment component 115 to make way. At this time, the anti-misalignment component 115 prevents the side portion 22 from entering the mounting slot 111, thereby preventing the button structure 20 from being installed in the wrong position.

[0096] In some embodiments, a through hole 1121 is provided on the housing 10 at a position corresponding to the mounting groove 111. The through hole 1121 penetrates the housing 10 to communicate with the receiving cavity 14. The through hole 1121 also communicates with the mounting groove 111, thereby connecting the mounting groove 111 and the receiving cavity 14 through the through hole 1121. When the pressing member 21 is movably disposed in the mounting groove 111, the trigger member 23 can be disposed through the through hole 1121, and the end of the trigger member 23 away from the pressing member 21 can extend into the receiving cavity 14.

[0097] It should be noted that a protrusion 112 is also provided at the bottom of the mounting groove 111. The protrusion 112 is located in the middle of the mounting groove 111, and a through hole 1121 is formed at the position of the corresponding protrusion 112 on the housing 10, and the through hole 1121 passes through the protrusion 112. By setting the protrusion 112 and having the through hole 1121 pass through it, the extension dimension of the through hole 1121 can be increased, thereby making the trigger 23 more stable when moving in the through hole 1121.

[0098] It is worth mentioning that the button structure 20 also includes a guide 27, which is located within the receiving groove 26. The guide 27 is connected to one end of the pressing member 21 facing away from the pressing surface 211, and is circumferentially arranged around the side wall of the protrusion 112. When the trigger member 23 is inserted into the through hole 1121, the end face of the guide 27 facing the protrusion 112 fits against the side wall of the protrusion 112. The cooperation between the guide 27 and the protrusion 112 can increase the resistance of the trigger member 23 to tilting, making it less likely for the trigger member 23 to tilt.

[0099] In some implementations, a first groove 231 is formed on the peripheral wall of the trigger member 23, located at the end of the trigger member 23 away from the pressing member 21. A limiting member 24 is inserted into the first groove 231. The limiting member 24 can be a retaining spring, which can be engaged from the side end of the trigger portion into the first groove 231 to increase the radial dimension of the trigger member 23, making its dimension larger than the dimension of the through hole 1121. When the trigger member 23 is inserted into the through hole 1121, the limiting member 24 is engaged in the first groove 231, and the limiting member 24 engages the housing 10 between itself and the pressing member 21. When the elastic member 30 forces the button structure 20 to reset in a direction away from the housing 10, the limiting member 24 is adapted to abut against the inner wall of the housing 10 to prevent the trigger member 23 from disengaging from the through hole 1121. In addition, the elastic element 30 can provide the button structure 20 with an elastic force that is opposite to the limiting element 24. Due to the reaction force, the limiting element 24 applies a force opposite to the elastic element 30 to the trigger element 23. The elastic force of the elastic element 40 and the reaction force on the limiting element 24 can increase the axial preload of the trigger element 23, ensuring that the trigger element 23 is not prone to tilting after reset, and making the button structure 20 less prone to shaking.

[0100] In some embodiments, the peripheral wall of the trigger member 23 is further provided with a second groove 232, which is located between the first groove 231 and the pressing member 21. The second groove 232 is an annular groove, which is arranged around the first axis E on the peripheral wall of the trigger member 23. A sealing ring 25 is provided in the second groove 232. When the trigger member 23 passes through the through hole 1121, the sealing ring 25 fits against the inner wall of the through hole 1121. By providing a sealing ring 25 on the peripheral wall of the trigger member 23, the sealing between the trigger member 23 and the inner wall of the through hole 1121 can be increased, preventing dust or moisture from entering the recorder.

[0101] Along the direction of the first axis E, the distance between the two opposite end walls of the second groove 232 is greater than or equal to 0.25 and less than or equal to 1.

[0102] In some embodiments, the recording device further includes a sound-insulating member 15, which is connected to the control circuit 40 and covers the switch member 41. The sound-insulating member 15 may be a silencing diaphragm. When the triggering part triggers the switch member 41, it may first come into contact with the sound-insulating member 15. The sound-insulating member 15 can be used to block the sound of the button being pressed when the switch member 41 is triggered, so as to reduce the impact of noise on the microphone 50's sound pickup.

[0103] See Figures 1 to 5 As shown, in one possible implementation, the housing 10 includes a first housing 11, a middle frame 12, and a second housing 13. The first housing 11 and the second housing 13 are detachably connected to opposite ends of the middle frame 12, for example, by means of a snap-fit ​​structure, a fastening structure, or screws. The first housing 11, the middle frame 12, and the second housing 13 form a receiving cavity 14, within which the control circuit 40 and the elastic element 30 are located. A portion of the middle frame 12 protrudes into the receiving cavity 14, and the control circuit 40 can be connected to the protruding structure of the middle frame 12 by screws.

[0104] In some embodiments, the recording device further includes a microphone 50, which is connected to the control circuit 40 and is adapted to receive external sounds. The microphone 50 is disposed on the end face of the control circuit 40 facing the first housing 11. A baffle portion 113 is provided on the inner wall of the first housing 11 corresponding to the position of the microphone 50. One end of the baffle portion 113 is connected to the inner wall of the first housing 11, and the other end extends toward the microphone 50 of the control circuit 40. The baffle portion 113 has a ring-shaped structure, with an inner ring surrounding an accommodating space. The baffle portion 113 surrounds the microphone 50, enclosing it within the accommodating space. The end of the baffle portion 113 away from the first housing 11 abuts against the control circuit 40. By providing the baffle portion 113, the microphone 50 can be enclosed, thus preventing the microphone 50 from receiving sounds emitted when the button structure 20 presses the switch 41, and avoiding the microphone 50 picking up noise.

[0105] It should be noted that a sound-absorbing component 114 is provided between the end of the enclosure 113 away from the first housing 11 and the control circuit 40, and the end of the enclosure 113 away from the first housing 11 and the control circuit 40 are connected through the sound-absorbing component 114. This sound-absorbing component 114 can be, for example, sound-absorbing cotton. By providing the sound-absorbing component 114, rigid contact between the enclosure 113 and the control circuit 40 can be prevented, and the sound-absorbing effect of the enclosure 113 can be increased, preventing the microphone 50 from picking up noise.

[0106] It is worth mentioning that the enclosure 113 itself can be formed of sound-absorbing cotton, or a layer of sound-absorbing cotton structure can be installed on the outer wall and / or inner wall of the enclosure 113 to increase the sound absorption effect of the enclosure 113.

[0107] The rebound structure of the relevant technology is a compression spring. One end of the compression spring abuts against or connects to the button structure, and the other end connects to the voice recorder's housing or control circuit. When an external force is applied to the button structure to trigger the switch, it presses against the compression spring, causing it to rebound. When the external force is removed from the button structure, the rebound force of the compression spring forces the button structure back to its original position. Understandably, to ensure the rebound effect, the compression spring in existing voice recorders is relatively large, occupying a large space and resulting in a large volume of voice recorder. With the increasing demand for miniaturization and thinness of voice recorders, the internal usable space of voice recorders is gradually shrinking. The space reserved for the compression spring's movement may only be about 1mm. This means that either the number of coils of the compression spring can be reduced while keeping the diameter or thickness of the spring wire unchanged, but when the number of coils is less than 3, the two ends of the compression spring cannot be tightly closed, which is not convenient for mass production and assembly; or the diameter or thickness of the spring wire can be reduced to maintain the number of coils, but the elasticity will be greatly reduced, and the durability and reliability of the compression spring will be reduced. This will greatly reduce the rebound effect of the buttons. After prolonged use, the rebound of the buttons will fail, reducing the durability and reliability of the buttons and affecting the feel of the buttons when pressed.

[0108] Based on this, the recording device of this application improves the elastic element that drives the key structure to rebound, making it different from the traditional rebound structure. The elastic element of this application includes multiple corrugated segments arranged in a circle, and two adjacent corrugated segments have oppositely arranged curved segments. When the elastic element is compressed, the opposite curved segments press against each other, so that the elastic force of the elastic element can still be guaranteed even if the size of the elastic element is small.

[0109] Specifically, see Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the elastic element 30 of this application includes a plurality of interconnected corrugated segments 31, the plurality of corrugated segments 31 are spaced apart along a first direction, and adjacent two corrugated segments 31 are bent toward each other at least at opposite positions along the first direction.

[0110] In this application, multiple corrugated segments 31 are stacked along a first direction, and each corrugated segment 31 is arranged around a second axis parallel to the first direction. Each corrugated segment 31 has at least one crest 311 and at least one trough 312 along its surrounding path. The crest 311 and the trough 312 are curved structures arranged in opposite directions along the first direction. The crest 311 of one of two adjacent corrugated segments 31 and the trough 312 of the other are arranged correspondingly in the first direction.

[0111] It should be noted that the fact that the peak 311 of one of two adjacent corrugated segments 31 and the trough 312 of the other are set to correspond in the first direction means that, in two adjacent corrugated segments 31, the peak 311 of one corrugated segment 31 corresponds to the trough 312 of the other corrugated segment 31, and the trough 312 of the corrugated segment 31 corresponds to the peak 311 of the other corrugated segment 31.

[0112] This application incorporates an elastic element 30. When an external force causes the button structure 20 to trigger the switch 41, the rebound force of the elastic element 30 forces the button structure 20 back to its original position when the external force is removed. This ensures that the button structure 20 remains stable and does not wobble when pressed, and the pressing finger receives force feedback from the button structure 20, improving the pressing feel.

[0113] Furthermore, the elastic element 30 of this application includes multiple corrugated segments 31, with adjacent corrugated segments 31 bent towards each other at least partially along a first direction. Specifically, each corrugated segment 31 has a crest 311 and a trough 312, and the multiple corrugated segments 31 are stacked, with the crests 311 and troughs 312 of adjacent corrugated segments 31 corresponding to each other. In this way, when the button structure 20 compresses the elastic element 30, the crests 311 of adjacent corrugated segments 31 press against the troughs 312. Since the crests 311 and troughs 312 are curved structures, the elastic strength can be increased, thereby improving the reliability of the elastic element 30. When the housing 10 of the recording device is small, the space for accommodating the elastic element 30 is also small. Compared with existing elastic structures such as compression springs, the elastic element 30 of this application is smaller in size while generating the same elastic force. In other words, the elastic element 30 of this application can be applied to recording devices with a small rebound space while ensuring its rebound force, which helps to reduce the rebound space of the recording device and make the recording device structure more compact. In addition, since the elastic element 30 of this application has a structure with opposing bending between two adjacent corrugated segments 31, the bending structure can not only increase the elastic force of the corrugated segments 31, but also increase the durability and reliability of the corrugated segments 31, ensuring the service life of the elastic element 30, thereby increasing the durability and reliability of the button structure 20.

[0114] See Figure 1 , Figure 6 and Figure 7 As shown, in some feasible ways, the cross-section of the elastic element 30 along the first direction is a closed annular structure. The annular shape of the elastic element 30 can be various, such as square, elliptical or circular, etc. The elastic element 30 of this application is approximately annular.

[0115] The radial dimension of the outer ring of the annular structure should not be too large or too small. An excessively large dimension occupies a large amount of space, while an excessively small dimension is not only difficult to process but also reduces its elasticity. In this application, the radial dimension of the outer ring is D, where D satisfies: 3mm ≤ D ≤ 9mm.

[0116] For example, the radial dimension D of the outer ring of the elastic element 30 along the first direction is 3mm, 4mm, 5mm, 5.7mm, 6mm, 6.3mm, 7mm, 8mm, or 9mm. Preferably, the radial dimension D of the outer ring of the elastic element 30 along the first direction is 6mm. The radial dimension D of the outer ring of the annular structure is any value between 4mm and 8mm; or, the radial dimension D of the outer ring of the annular structure is any value between 5mm and 7mm; or, the radial dimension D of the outer ring of the annular structure is any value between 5.7mm and 6.3mm.

[0117] It should be noted that by setting the outer ring radial dimension of the elastic element 30, this application can limit the overall size range of the elastic element 30, so that the radial dimension of the elastic element 30 can meet the requirements of having sufficient strength and reliability, and also ensure that the space occupied by the elastic element 30 is not too large.

[0118] In some embodiments, the distance between the inner and outer ring walls of the annular structure along the radial direction is L1, where L1 = 0.3 mm - 1 mm. It is worth noting that the second axis is the central axis of the annular structure, and L1 can be considered as the width of the annular structure in the direction perpendicular to the second axis.

[0119] For example, L1 is 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm. Preferably, the distance L1 between the inner and outer ring walls of the annular structure is 0.4mm. The distance L1 between the inner and outer ring walls of the annular structure can be any value between 0.4mm and 0.9mm; or, the distance L1 between the inner and outer ring walls of the annular structure can be any value between 0.5mm and 0.8mm; or, the distance L1 between the inner and outer ring walls of the annular structure can be any value between 0.6mm and 0.7mm.

[0120] Under the condition that the radial dimension of the cross-section of the elastic element 30 meets the above requirements, the width of the elastic element 30 in the direction perpendicular to the second axis should not be too wide. If it is too wide, it indicates that the elastic element 30 has more structures providing elastic force, resulting in a larger elastic force. This requires more force to press the button structure 20, making pressing the button more difficult. When the elastic element 30 is compressed, the crests 311 and troughs 312 of each corrugated segment 31 will undergo relative displacement. If the width of the elastic element 30 in the direction perpendicular to the second axis is too narrow, the crests 311 and troughs 312 will separate during relative displacement, causing jamming between adjacent corrugated segments 31. Therefore, the L=0.3mm-0.5mm in this application ensures that the elastic force of the elastic element 30 is appropriate and that jamming is less likely to occur.

[0121] See Figure 1 , Figure 6 and Figure 7 As shown, in some feasible ways, the elastic element 30 of this application can specifically be a long strip structure. Along the first direction, the elastic element 30 is spirally arranged around the second axis, and each spiral segment forms a corrugated segment 31.

[0122] Alternatively, the elastic element 30 includes multiple independent corrugated segments 31, with multiple corrugated ends stacked along the first direction. Each corrugated segment 31 is a closed-loop annular structure, and the peaks 311 and troughs 312 of two adjacent corrugated segments 31 are connected.

[0123] The specific design of the elastic element 30 needs to be determined according to the actual situation, and no special restrictions are made here. This application takes the elastic element 30 as an integral structure and spirally arranged around the second axis as an example for explanation.

[0124] The cross-section of the elastic element 30 along its length can be of various shapes, such as circular, elliptical, or even square. In this application, the cross-section of the elastic element 30 along its length is flat.

[0125] The dimension of the corrugated segment 31 perpendicular to its length direction is the thickness of the corrugated segment 31. In this embodiment, the thickness of the corrugated segment 31 along the first direction is H, where H = 0.08 mm - 0.13 mm.

[0126] The thickness of the corrugated section 31 is related to the radial dimension and radial width of the annular structure of the elastic element 30. This makes it unsuitable for the corrugated section 31 to be too thick or too thin. In the embodiments of this application, the thickness of the corrugated section 31 is 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, and 0.13mm. When the thickness of the corrugated section 31 is less than 0.08mm, the corrugated section 31 is too thin, which not only affects the strength of the elastic element 30 but also increases the manufacturing difficulty, making the entire elastic element 30 difficult to process. When the thickness of the corrugated section 31 is greater than 0.13mm, the corrugated section 31 is too thick, which will result in a larger overall elastic force of the elastic element 30, increasing the difficulty of pressing the button structure 20. Therefore, this application sets the thickness H of the corrugated section 31 to 0.08mm-0.13mm, which can reduce the manufacturing difficulty and the difficulty of pressing.

[0127] See Figure 1 and Figure 5 As shown, in some embodiments, a movable space is formed between the button structure 20 and the housing 10. The movable space extends along a first direction, and the elastic member 30 is located in the movable space. One end of the elastic member 30 along the first direction is connected to the button structure 20, and the other end can abut against the control circuit 40.

[0128] The length of the elastic element 30 can be equal to or greater than the dimension of the movable space along the first direction. Thus, in its free state, the elastic element 30 is either neither stretched nor compressed, or it is compressed. When an external force is applied to the button structure 20 toward the switch member 41, the button structure 20 begins to compress the elastic element 30, generating elastic force.

[0129] For example, along the first direction, the size of the movable space is F, where 0 < F ≤ 1.1 mm. By setting the size of the movable space to be less than or equal to 1.1 mm, it is beneficial to reduce the range of motion of the elastic member 30, thereby reducing the space occupied by the elastic member 30.

[0130] It should be noted that the distance between the two ends of the elastic element 30 is M, which is the overall length of the elastic element 30, M = 1.1mm - 2.4mm. It can be understood that when M is 1.1mm, the length of the elastic element 30 is exactly the same as the size of the moving space. When M is greater than 1.1mm, the elastic element 30 is in a compressed state within the moving space. The length of the elastic element 30 should not be too large, as this will result in a greater amount of compression within the moving space, reducing the subsequent compression space and hindering the movement of the button structure 20.

[0131] For example, M can be 1.1mm, 1.3mm, 1.5mm, 1.6mm, 1.7mm, 1.9mm, 2.1mm, 2.2mm, 2.3mm, or 2.4mm. Preferably, the distance M between the opposite ends of the elastic member 30 is 1.1mm. The distance M between the opposite ends of the elastic member 30 can be any value between 1.3mm and 2.2mm; or, the distance M between the opposite ends of the elastic member 30 can be any value between 1.5mm and 2.0mm; or, the distance M between the opposite ends of the elastic member 30 can be any value between 1.6mm and 1.9mm.

[0132] It is worth mentioning that the corrugated segment 31 has a certain thickness, and the elastic element 30 has multiple corrugated segments 31. Therefore, the size of the movable space needs to be determined according to the actual situation. For example, the size of the movable space should be at least greater than the length of the elastic element 30 when it has two corrugated segments 31.

[0133] In some embodiments, the corrugated segment 31 has at least one crest 311 and one trough 312, both of which are curved structures. The crest 311 and the trough 312 are curved in opposite directions along the second axis, and both the crest 311 and the trough 312 are curved structures, so the corrugated segment 31 is configured to be wavy overall.

[0134] The number of crests 311 and troughs 312 in the corrugated segment 31 of this application should not be too large. The maximum number of crests 311 and troughs 312 should be three, that is, the number of crests 311 and troughs 312 should be between one and three, including one and three. The number of crests 311 and troughs 312 can be equal or unequal, depending on the design requirements.

[0135] See Figure 1 and Figure 5 As shown, in some embodiments, the housing 10 and the button structure 20 are relatively movable relative to each other. The button structure 20 has at least a first stroke relative to the housing 10 towards the switch member 41 and a second stroke relative to the housing 10 away from the switch member 41. There may be a certain gap between the button structure 20 and the switch member 41, or the button structure 20 may abut against the trigger structure of the switch member 41 in a free state. When the button structure 20 moves along the first stroke, it can press and trigger the switch member 41; when the button structure 20 moves along the second stroke, it can stop the switch member 41 from triggering. The housing 10 and the button structure 20 will be described in detail below.

[0136] In some feasible implementations, along the first direction, the button structure 20 and the switch element 41 are spaced apart, and the distance between the button structure 20 and the switch element 41 is L2, where 0.25mm ≤ L2 < 1.1mm. It is understood that when there is a gap between the button structure 20 and the switch element 41, pressing the button structure 20 will not cause the button structure 20 to press against the switch element 41 first. This gap can act as a buffer, preventing damage to the switch element 41 caused by sudden pressing of the button structure 20. Furthermore, the gap between the button structure 20 and the switch element 41 cannot be too large; theoretically, it should not exceed 1.1mm, i.e., it should not exceed the size of the movable space. This is because the switch element 41 is also located within the movable space, and part of the button structure 20 can move into the movable space to compress the switch element 41. The switch element 41 itself has thickness; if the gap between the button structure 20 and the switch element 41 is set too large, it will increase the thickness of the recording device, leading to an increase in its volume.

[0137] For example, L2 in this application is 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, or 1.1mm. Preferably, the distance L2 between the button structure 20 and the switch element 41 is 0.25mm. The distance L2 between the button structure 20 and the switch element 41 can be any value between 0.3mm and 1.0mm; or, the distance L2 between the button structure 20 and the switch element 41 can be any value between 0.5mm and 0.8mm.

[0138] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A recording device, characterized in that, include: A housing having a receiving cavity for accommodating a control circuit, wherein a switch is provided on one side of the control circuit; A button structure includes a pressing element and several trigger elements. The trigger elements are connected to one end face of the pressing element. Each trigger element protrudes from the pressing element along a first axis and passes through a housing. The trigger elements and the housing have a clearance fit or a transition fit. Under external force, the trigger elements move towards the switch element to trigger it. Along the first axis, the cross-sectional area of ​​the trigger element is S1, and the area of ​​the end face of the pressing element used to connect to the trigger element is S2. S1 and S2 satisfy: S1 / S2 = 0.1 - 1; and An elastic element is disposed on the movement path of the button structure, and the elastic element is adapted to provide a restoring force opposite to the direction of movement to the button structure as it moves toward the switch element.

2. The recording device according to claim 1, characterized in that, The S1 / S2 is any value between 0.2 and 0.9; or any value between 0.3 and 0.8; or any value between 0.4 and 0.7; or any value between 0.5 and 0.

6.

3. The recording device according to claim 1, characterized in that, Along the first axis, the cross-sectional areas of the triggers are equal.

4. The recording device according to claim 3, characterized in that, The trigger is cylindrical, and one end of the trigger along its axis is connected to the center of the pressing element.

5. The recording device according to claim 1, characterized in that, The housing is provided with a mounting groove communicating with the accommodating cavity, the pressing member is located in the mounting groove, and a gap is provided between the peripheral wall of the pressing member and the inner wall of the mounting groove.

6. The recording device according to claim 5, characterized in that, A gap of 0.01 mm or more and 0.07 mm or less is provided between the peripheral wall of the pressing member and the inner wall of the mounting groove.

7. The recording device according to claim 1, characterized in that, The trigger stroke of the switch is parallel to the first direction, and the path of the button structure moving toward the switch is parallel to the first direction, or forms an angle with the first direction, wherein the angle is an acute angle.

8. The recording device according to claim 5, characterized in that, Along the first direction, the pressing member has a pressing surface facing away from the trigger member, the pressing surface being flush with the upper end surface of the housing, or the pressing surface being at least partially lower than the upper end surface of the housing.

9. The recording device according to claim 8, characterized in that, The circumferential edge of the pressing surface is adjacent to the upper end surface of the housing. When the upper end surface of the housing is curved, in the first direction, the height of the circumferential edge of the pressing surface is flush with the height of its adjacent upper end surface, or the height of the circumferential edge of the pressing surface is lower than the height of its adjacent upper end surface.

10. The recording device according to claim 8, characterized in that, When the button structure moves toward the switch, the shortest distance between the pressing surface and the upper end surface of the housing is greater than or equal to 0 mm and less than or equal to 1.2 mm.

11. The recording device according to claim 8, characterized in that, The pressing surface is curved, and along the first direction, the curved surface bends toward the trigger.

12. The recording device according to claim 8, characterized in that, The pressing surface is made of a flexible material, or the pressing surface is provided with a flexible material layer.

13. The recording device according to claim 8, characterized in that, The pressing surface is provided with multiple raised dots, or the pressing surface is provided with grid stripes.

14. The recording device according to claim 5, characterized in that, The button structure also includes a side portion, which is arranged in a ring shape. The inner ring of the side portion forms a receiving groove, and the elastic element is located in the receiving groove.

15. The recording device according to claim 14, characterized in that, The side portion is adapted to be inserted into the mounting groove. The side wall of the side portion is provided with a foolproof groove. The inner wall of the mounting groove is provided with a foolproof member. When the side portion is inserted into the mounting groove, the foolproof member is adapted to be inserted into the foolproof groove.

16. The recording device according to claim 5, characterized in that, The housing is provided with a through hole, the through hole penetrates the housing and communicates with the receiving cavity, and the trigger is disposed through the through hole.

17. The recording device according to claim 16, characterized in that, A first groove is formed on the peripheral wall of the trigger, and a limiting member suitable for suppressing the tilting of the trigger is inserted into the first groove. The limiting member is adapted to abut against the inner wall of the housing.

18. The recording device according to claim 17, characterized in that, The peripheral wall of the trigger is provided with a second groove around the first axis, and a sealing ring is provided in the second groove. When the trigger is inserted into the through hole, the sealing ring fits against the inner wall of the through hole.

19. The recording device according to claim 18, characterized in that, Along the direction of the first axis, the distance between the opposite end walls of the second groove is greater than or equal to 0.25 and less than or equal to 1.

20. The recording device according to claim 16, characterized in that, The housing is provided with a protrusion, which is located at the bottom of the mounting groove and covers the through hole. The through hole is provided through the protrusion. The button structure also includes a guide, which is circumferentially disposed on the side wall of the protrusion.

21. The recording device according to any one of claims 1-20, characterized in that, It also includes a sound insulation component, which is connected to the control circuit and covers the switch component.

22. The recording device according to any one of claims 1-20, characterized in that, It also includes a microphone connected to the control circuit. The inner wall of the housing is provided with a baffle extending toward the control circuit and surrounding the microphone.

23. The recording device according to claim 22, characterized in that, The end of the enclosure near the control circuit is connected to the control circuit via a sound-absorbing component.

24. The recording device according to any one of claims 1-20, characterized in that, The housing includes a first housing and a second housing, the first housing and the second housing are connected, and the first housing and the second housing surround to form the accommodating cavity.

25. The recording device according to any one of claims 1-20, characterized in that, The elastic element has multiple interconnected corrugated segments, which are spaced apart along a first direction, and adjacent corrugated segments are bent toward each other at least at opposite positions along the first direction.

26. The recording device according to claim 25, characterized in that, The plurality of corrugated segments are arranged around a second axis parallel to the first direction. Each corrugated segment has at least one crest and at least one trough along its surrounding path. The crest and the trough are curved structures extending in the opposite direction to the first direction. The crest of one of two adjacent corrugated segments and the trough of the other are arranged correspondingly in the first direction.

27. The recording device according to claim 26, characterized in that, Along the first direction, the cross-section of the elastic element is an annular structure, and the outer ring radial dimension of the annular structure is D, where D satisfies: 3mm≤D≤9mm.

28. The recording device according to claim 27, characterized in that, The outer ring radial dimension D of the ring structure is any value between 4mm and 8mm; or, the outer ring radial dimension D of the ring structure is any value between 5mm and 7mm; or, the outer ring radial dimension D of the ring structure is any value between 5.7mm and 6.3mm.

29. The recording device according to claim 27, characterized in that, Along the radial direction of the annular structure, the distance between the inner ring wall and the outer ring wall of the annular structure is L1, and L1 satisfies: 0.3mm≤L1≤1mm.

30. The recording device according to claim 29, characterized in that, The distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.4 mm and 0.9 mm; or, the distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.5 mm and 0.8 mm; or, the distance L1 between the inner ring wall and the outer ring wall of the annular structure is any value between 0.6 mm and 0.7 mm.

31. The recording device according to claim 27, characterized in that, Along the first direction, the thickness of the corrugated segment is H, where H satisfies: 0.08mm ≤ H ≤ 0.13mm.

32. The recording device according to claim 26, characterized in that, Along the first direction, the distance between the opposite ends of the elastic element is M, where M satisfies: 1.1mm ≤ M ≤ 2.4mm.

33. The recording device according to claim 32, characterized in that, The distance M between the two opposite ends of the elastic element is any value between 1.3mm and 2.2mm; or, the distance M between the two opposite ends of the elastic element is any value between 1.5mm and 2.0mm; or, the distance M between the two opposite ends of the elastic element is any value between 1.6mm and 1.9mm.

34. The recording device according to claim 32, characterized in that, An active space is formed between the button structure and the housing, the active space extends along a first direction, the elastic element is located within the active space, and one end of the elastic element along the first direction is connected to the button structure. Along the first direction, the size of the active space is F, where F≤1.1mm.

35. The recording device according to claim 34, characterized in that, Along the first direction, the button structure and the switch are spaced apart, and the distance between the button structure and the switch is L2, where L2 satisfies: 0.25mm≤L2<1.1mm.

36. The recording device according to claim 35, characterized in that, The distance L2 between the button structure and the switch is any value between 0.3mm and 1.0mm; or, the distance L2 between the button structure and the switch is any value between 0.5mm and 0.8mm.

37. The recording device according to claim 27, characterized in that, Along the first direction, the elastic element is spirally arranged around the second axis, and each spiral segment forms the corrugated segment; or The elastic element includes multiple independent corrugated segments, each corrugated segment having a closed-loop annular structure, with the crests and troughs of two adjacent corrugated segments connected together.

38. The recording device according to any one of claims 1-20, characterized in that, The elastic element is made of metal.

Images