Sound and silent switching microswitch

Abstract

The utility model discloses a voiced and silent switching microswitch, which comprises a base, an upper cover, a key, a driving sheet, a contact static sheet and a contact movable sheet, the base is provided with a movable groove, a switching assembly is arranged in the movable groove, the switching assembly comprises a sliding piece, a sound production contact and a silent contact, the sound production contact and the silent contact are both arranged on the sliding piece, and the sound production contact and the silent contact are arranged on the sliding piece. A push block is arranged on the side wall of the sliding piece, a sliding hole for the push block to move is formed in the side wall of the base, the push block extends out of the base from the sliding hole, and the sound production contact and the mute contact are both arranged below the driving piece. When the sliding piece drives the sound production contact to slide to the position under the driving piece, the mute contact and the position under the driving piece are staggered. When the sliding piece drives the mute contact to slide to the position under the driving piece, the sound production contact and the position under the driving piece are staggered. According to the utility model, movement of the mute contact and the sounding contact can be realized by moving the push block outside the base, so that a mute state and a sounding state can be quickly and simply switched, and a stable and good hand feeling effect can be maintained.

Description

Technical Field

[0001] The utility model relates to the field of micro switches, in particular to an audible or silent switching micro switch. Background Art

[0002] The micro switch is a signal input and output structure of a keyboard key. The micro switch includes a shell, a key, a drive sheet, a contact static sheet, a contact moving sheet, and a sound contact. Pressing down the key protruding from the top wall of the shell drives the drive sheet to slide down, and then drives the contact moving sheet connected to the drive sheet to move toward the contact static sheet, so that the contact moving sheet and the contact static sheet contact to achieve conduction. While the electricity is conducting, the drive sheet slides down and hits the sound contact to make a sound, so that the micro switch signal is connected and the corresponding sound is emitted, providing users with a better user experience.

[0003] However, in some environments, the sound of the keyboard can easily affect others, so the keyboard needs to be switched to a silent state. The conversion is generally handled by removing the sound contacts or using a silent pad. These operations are more troublesome and easily affect the feel of the keyboard. Utility Model Content

[0004] In order to realize convenient switching between the "sound state" and the "silent state" of the micro switch without affecting the hand feel, the utility model provides a sound-silent switching micro switch.

[0005] The utility model provides a micro switch with sound or without sound, which adopts the following technical scheme:

[0006] A micro switch for switching between sound and silence, comprising a base, an upper cover, a button, a driving plate, a static contact plate and a moving contact plate, the base being provided with a movable groove, the movable groove being provided with a switching assembly, the switching assembly comprising a sliding member, a sounding contact and a silent contact, the sounding contact and the silent contact being both arranged on the sliding member, the side wall of the sliding member being provided with a push block, the side wall of the base being provided with a sliding hole for displacement of the push block, the push block extending from the sliding hole to the outside of the base, the sounding contact and the silent contact being both arranged below the driving plate; when the sliding member drives the sounding contact to slide to directly below the driving plate, the silent contact is offset from the directly below the driving plate; when the sliding member drives the silent contact to slide to directly below the driving plate, the sounding contact is offset from the directly below the driving plate.

[0007] Preferably, the silent contact and the sounding contact are hard blocks of the same shape, the outer periphery of the silent contact is covered with a silent rubber sleeve, the silent contact is bullet-shaped which is narrow at the top and wide at the bottom, the cross-sectional area of ​​one end of the silent contact close to the driving plate is smaller than that of the other end, and a contact ridge is provided on the bottom wall of the driving plate; when the silent contact slides to directly below the driving plate, the silent contact is opposite to the contact ridge, and the sounding contact is staggered with the contact ridge; when the sounding contact slides to directly below the driving plate, the sounding contact is opposite to the contact ridge.

[0008] Preferably, the sliding member includes a slider and a plug-in block, the slider is integrally connected to the push block, the slider is hollow to form a slot for the plug-in block to be plugged in, the silent contacts and the sounding contacts are both arranged on the plug-in block, the slider has an avoidance hole along the thickness direction, and the avoidance hole is connected to the slot.

[0009] Preferably, the outer sleeve of the plug-in block is provided with a shock-absorbing rubber sleeve, the shock-absorbing rubber sleeve is integrally connected with the sound-absorbing rubber sleeve, the shock-absorbing rubber sleeve has an insertion interface for the plug-in block to be inserted, the inner wall shape of the shock-absorbing rubber sleeve is adapted to the outer peripheral shape of the plug-in block, the shock-absorbing rubber sleeve has a socket for the sound-emitting contact to pass through, and the outer peripheral wall of the shock-absorbing rubber sleeve is tightly pressed against the inner peripheral wall of the slot.

[0010] Preferably, the plug-in block is penetrated by a material reduction hole along its thickness direction, the material reduction hole penetrates one end of the plug-in block along the length direction to form a plug-in opening, the plug-in block is consistent with the length direction of the shock-absorbing rubber sleeve, the plug-in port and the silent contact are respectively located at the two ends of the shock-absorbing rubber sleeve along the length direction, and when the plug-in block is arranged in the shock-absorbing rubber sleeve, one end of the plug-in opening of the plug-in block is located below the silent contact.

[0011] Preferably, a card block is provided on the side of the slider away from the push block, and two card slots are provided in the movable slot. When the card block is located in one of the card slots, the silent contact is opposite to the contact protrusion; when the card block is located in the other card slot, the sounding contact is opposite to the contact protrusion.

[0012] Preferably, an extension plate is connected to the end of the slider, the length direction of the extension plate is consistent with the length direction of the slider, a buffer gap is left between the extension plate and the slider, and the clamping block is integrally connected to the side of the extension plate away from the slider.

[0013] Preferably, the extension plate is integrally connected to the slider, and the connection between the extension plate and the slider is an arc transition.

[0014] Preferably, the peripheral wall of the plug port is an inclined guide surface.

[0015] Preferably, the silent contacts and the sounding contacts are both metal plates.

[0016] In summary, the utility model includes the following beneficial technical effects: the sliding member is arranged in the movable groove, and when the micro switch needs to be adjusted to the sound state, the push block is pushed to slide the sliding member, so that the sound contact arranged on the sliding member moves to the position directly below the driving plate, and the driving plate hits the sound contact downward under the drive of the key to make a sound; when the micro switch needs to be adjusted to the silent state, the sliding member is moved, so that the silent contact arranged on the sliding member moves to the position directly below the driving plate, and the driving plate hits the silent contact downward under the drive of the key, thereby achieving the same pressing feel as in the sound state, and at the same time, no sound is made, so as to achieve the silent effect. The push block outside the moving base can realize the movement of the silent contact and the sound contact, so as to quickly and easily switch between the silent state and the sound state and maintain a stable and good feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a micro switch with or without sound.

[0018] Figure 2 It is a schematic diagram for illustrating the position structure of the driver plate and the sound switching component.

[0019] Figure 3 is a diagram illustrating a breakdown of the sound switching components.

[0020] Figure 4 It is a structural diagram used to illustrate the installation slot.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. upper cover; 3. button; 4. drive plate; 5. movable slot; 6. switching assembly; 61. sound-generating contact; 62. shock-absorbing rubber sleeve; 621. jack; 622. plug interface; 63. push block; 64. silent rubber sleeve; 65. slider; 66. plug-in block; 661. material reduction hole; 662. plug-in opening; 67. slot; 68. card block; 69. card slot; 7. sliding hole; 8. contact ridge; 9. extension plate; 10. buffer gap; 11. guide surface; 12. avoidance hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-4 The utility model is described in further detail.

[0023] The utility model discloses a micro switch for switching between sound and sound. Figure 1 as well as Figure 2In the present embodiment, a micro switch for switching between sound and soundlessness includes a base 1, an upper cover 2, a button 3, a driving plate 4, a static contact plate and a dynamic contact plate. The base 1 is provided with a movable groove 5, and a switching assembly 6 is arranged in the movable groove 5. The switching assembly 6 includes a sliding member, a sounding contact 61 and a mute contact. The sounding contact 61 and the mute contact are both arranged on the sliding member. A push block 63 is arranged on the side wall of the sliding member. A sliding hole 7 for displacement of the push block 63 is arranged on the side wall of the base 1. The push block 63 extends from the sliding hole 7 to the outside of the base 1. The sounding contact 61 and the mute contact are both arranged below the driving plate 4; when the sliding member drives the sounding contact 61 to slide to the point directly below the driving plate 4, the mute contact is offset from the point directly below the driving plate 4; when the sliding member drives the mute contact to slide to the point directly below the driving plate 4, the sounding contact 61 is offset from the point directly below the driving plate 4.

[0024] The sliding member is arranged in the movable groove 5. When the micro switch needs to be adjusted to the sound state, the push block 63 is pushed to slide the sliding member, so that the sound contact 61 arranged on the sliding member moves to the position directly below the driving plate 4. The driving plate 4 is driven by the key 3 and hits the sound contact 61 downward to make a sound; when the micro switch needs to be adjusted to the silent state, the sliding member is moved so that the silent contact arranged on the sliding member moves to the position directly below the driving plate 4. The driving plate 4 is driven by the key 3 and hits the silent contact downward to achieve the same pressing feel as in the sound state, and no sound is made at the same time, achieving a silent effect. The push block 63 outside the moving base 1 can realize the movement of the silent contact and the sound contact 61, so as to quickly and easily switch between the silent state and the sound state and maintain a stable and good feel.

[0025] Reference Figure 2 as well as Figure 3 In the present embodiment, the silent contact and the sounding contact 61 are hard blocks of the same shape, the outer periphery of the silent contact is covered with a silent rubber sleeve 64, the silent contact is in the shape of a bullet which is narrow at the top and wide at the bottom, the cross-sectional area of ​​one end of the silent contact close to the driving sheet 4 is smaller than that of the other end, and a contact ridge 8 is provided on the bottom wall of the driving sheet 4; when the silent contact slides to the bottom of the driving sheet 4, the silent contact is opposite to the contact ridge 8, and the sounding contact 61 is staggered from the contact ridge 8; when the sounding contact 61 slides to the bottom of the driving sheet 4, the sounding contact 61 is opposite to the contact ridge 8.

[0026] The silent contact and the sounding contact 61 have the same shape and are both arranged on the sliding member. The arrangement of the contact convex strip 8 can solve the problem of the height difference that needs to be generated during the switching process between the silent contact and the sounding contact 61. The silent contact and the sounding contact 61 do not need to be arranged with a height difference, and the switching process does not need to switch the top height position of the silent contact and the sounding contact 61. By simply setting the contact convex strip 8, when the silent contact or the sounding contact 61 abuts against the driving sheet 4, the other contact is separated from the driving sheet 4, making the overall structure more concise. At the same time, there is no need to completely move the non-working contact to be offset from the lower surface of the driving sheet 4, which is conducive to reducing the volume that needs to be set as a micro switch, making the overall structure of the micro switch more compact.

[0027] Reference Figure 2 as well as Figure 3 In this embodiment, the sliding member includes a slider 65 and a plug-in block 66. The slider 65 is integrally connected to the push block 63. The slider 65 is hollow to form a slot 67 for the plug-in block 66 to be plugged in. The silent contact and the sounding contact 61 are both arranged on the plug-in block 66. The slider 65 has an avoidance hole 12 along the thickness direction, and the avoidance hole 12 is connected to the slot 67.

[0028] When the silent contact or the sounding contact 61 is damaged by impact, the plug-in block 66 can be pulled out from the slider 65 to repair the silent contact, the sounding contact 61 or the plug-in block 66 or replace the entire plug-in block 66, which is helpful to reduce the need to replace the entire sliding part when the silent contact or the sounding contact 61 is damaged, thereby reducing the cost of repair.

[0029] Reference Figure 2 as well as Figure 3 In the present embodiment, a shock-absorbing rubber sleeve 62 is disposed on the outer cover of the plug-in block 66, and the shock-absorbing rubber sleeve 62 is integrally connected with the mute rubber sleeve 64. The shock-absorbing rubber sleeve 62 is provided with an insertion port 622 for inserting the plug-in block 66, and the inner wall shape of the shock-absorbing rubber sleeve 62 is adapted to the outer peripheral shape of the plug-in block 66. The shock-absorbing rubber sleeve 62 is provided with a plug hole 621 for the sound contact 61 to pass through, and the outer peripheral wall of the shock-absorbing rubber sleeve 62 is tightly pressed against the inner peripheral wall of the slot 67.

[0030] The shock-absorbing rubber sleeve 62 is installed together with the plug-in block 66 in the slot 67. The shock-absorbing rubber sleeve 62 can reduce the noise generated by the collision between the plug-in block 66 and the slider 65 when the driving plate 4 hits downward, which is beneficial to improving the silent effect in the silent state, and is also beneficial to reducing noise other than the sound of the collision between the driving plate 4 and the sounding contact 61 in the sounding state. At the same time, the setting of the shock-absorbing rubber sleeve 62 makes it difficult for the plug-in block 66 to slide relative to the slider 65, so that the plug-in block 66 is firmly installed in the slot 67, which is beneficial to improving the stability of the installation of the silent contact and the sounding contact 61.

[0031] Reference Figure 2 as well as Figure 3 In the present embodiment, the plug-in block 66 has a material reduction hole 661 extending along its thickness direction, and the material reduction hole 661 extends through one end of the plug-in block 66 along the length direction to form a plug-in opening 662. The length direction of the plug-in block 66 is consistent with that of the shock-absorbing rubber sleeve 62, and the plug-in port 622 and the mute contact are respectively located at the two ends of the shock-absorbing rubber sleeve 62 along the length direction. When the plug-in block 66 is disposed in the shock-absorbing rubber sleeve 62, one end of the plug-in opening 662 of the plug-in block 66 is located below the mute contact.

[0032] The plug-in block 66 is inserted into the shock-absorbing rubber sleeve 62 to support the silent contact. In order to achieve the effect of being tightly sleeved on the outer periphery of the plug-in block 66, the inner periphery of the shock-absorbing rubber sleeve 62 is interference fit with the outer periphery of the plug-in block 66. Therefore, in the process of inserting or removing the plug-in block 66 from the shock-absorbing rubber sleeve 62, the plug-in hole can provide a deformation space for the plug-in block 66, so that the plug-in block 66 is easier to be sleeved in the shock-absorbing rubber sleeve 62, and the shock-absorbing rubber sleeve 62 is less likely to cause fatigue due to the long-term placement of the solid plug-in block 66, which in turn causes the shock-absorbing rubber sleeve 62 to become loose after long-term use and difficult to be tightly sleeved on the outer periphery of the plug-in block 66.

[0033] Reference Figure 2 as well as Figure 4 In this embodiment, a block 68 is provided on the side of the slider 65 away from the push block 63, and two slots 69 are provided in the movable slot 5. When the block 68 is located in one of the slots 69, the silent contact is opposite to the contact protrusion 8; when the block 68 is located in the other slot 69, the sound contact 61 is opposite to the contact protrusion 8.

[0034] The clamping block 68 is clamped in the clamping slot 69, so that the switching assembly 6 is fixed in two states as a whole, which is beneficial to improve the stability of the two state settings.

[0035] Reference Figure 2 as well as Figure 3 In this embodiment, an extension plate 9 is connected to the end of the slider 65, the length direction of the extension plate 9 is consistent with the length direction of the slider 65, a buffer gap 10 is left between the extension plate 9 and the slider 65, and the block 68 is integrally connected to the side of the extension plate 9 away from the slider 65.

[0036] The buffer gap 10 between the extension plate 9 and the slider 65 can buffer the squeezing of the side wall of the movable groove 5 during the movement of the block 68, thereby providing deformation space for the entire sliding part for switching the slot 69, reducing the wear on the block 68 and making the block 68 less likely to be damaged or broken.

[0037] Reference Figure 2 as well as Figure 3 In this embodiment, the extension plate 9 is integrally connected to the slider 65, and the connection between the extension plate 9 and the slider 65 is an arc transition.

[0038] The arc transition section between the extension plate 9 and the slider 65 can buffer the deformation of the extension plate 9 caused by the thrust, making the connection between the extension plate 9 and the slider 65 less likely to break. At the same time, by setting the end of the extension plate 9 to be connected to the end of the slider 65, the torque of the thrust received by the block 68 to the end of the extension plate 9 can be increased, making the extension plate 9 less likely to break, which is beneficial to improving the service life of the sliding part.

[0039] Reference Figure 2 as well as Figure 3 In this embodiment, the peripheral wall of the plug-in port 622 is an inclined guide surface 11 .

[0040] The provision of the guide surface 11 makes it easier for the plug-in block 66 to be inserted into the shock-absorbing rubber sleeve 62 .

[0041] Reference Figure 2 as well as Figure 3 In this embodiment, both the silent contact and the sounding contact 61 are metal plates.

[0042] The silent contact and the sounding contact 61 are both in a state of frequently colliding with the driving plate 4. The metal plate has good ductility, is resistant to collision and is not easily deformed, and can protect the driving plate 4, reduce the deformation of the driving plate 4 due to long-term collision, and is conducive to improving the service life of the silent contact and the sounding contact 61. In this embodiment, the silent contact and the sounding contact 61 are both thick aluminum plates. In other embodiments, the silent contact and the sounding contact 61 can be other harder metal plates such as iron plates and silver plates.

[0043] Reference Figure 1 as well as Figure 2 In this embodiment, the sliding hole 7 penetrates the side walls of the upper cover 2 and the base 1 at the same time.

[0044] When the push block 63 slides, it simultaneously generates impact force on the side walls of the upper cover 2 and the sliding hole 7 of the base 1, which is helpful to reduce the misalignment of the upper cover 2 and the base 1, making the micro switch more compact as a whole.

[0045] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A micro switch with or without sound, characterized in that: The invention comprises a base (1), an upper cover (2), a button (3), a driving plate (4), a static contact plate and a dynamic contact plate, wherein the base (1) is provided with a movable groove (5), a switching component (6) is arranged in the movable groove (5), the switching component (6) comprises a sliding member, a sounding contact (61) and a mute contact, the sounding contact (61) and the mute contact are both arranged on the sliding member, a push block (63) is arranged on the side wall of the sliding member, and a sliding member (63) is arranged on the side wall of the base (1) for the push block (63) to move. The sliding member (63) extends from the sliding hole (7) to the outside of the base (1); the sound contact (61) and the silent contact are both arranged below the driving plate (4); when the sliding member drives the sound contact (61) to slide to the bottom of the driving plate (4), the silent contact is offset from the bottom of the driving plate (4); when the sliding member drives the silent contact to slide to the bottom of the driving plate (4), the sound contact (61) is offset from the bottom of the driving plate (4).

2. The audible and silent switching micro switch according to claim 1, characterized in that: The silent contact and the sounding contact (61) are hard blocks of the same shape. The outer periphery of the silent contact is covered with a silent rubber sleeve (64). The silent contact is in the shape of a bullet that is narrow at the top and wide at the bottom. The cross-sectional area of ​​one end of the silent contact close to the driving plate (4) is smaller than that of the other end. The bottom wall of the driving plate (4) is provided with a contact convex strip (8); when the silent contact slides to the bottom of the driving plate (4), the silent contact is opposite to the contact convex strip (8), and the sounding contact (61) is staggered from the contact convex strip (8); when the sounding contact (61) slides to the bottom of the driving plate (4), the sounding contact (61) is opposite to the contact convex strip (8).

3. The audible and silent switching micro switch according to claim 2, characterized in that: The sliding member comprises a slider (65) and a plug-in block (66); the slider (65) is integrally connected to the push block (63); the slider (65) is hollow to form a slot (67) for the plug-in block (66); the mute contact and the sound contact (61) are both arranged on the plug-in block (66); the slider (65) is provided with an avoidance hole (12) along the thickness direction; the avoidance hole (12) is communicated with the slot (67).

4. The audible and silent switching micro switch according to claim 3 is characterized in that: The plug-in block (66) is provided with a shock-absorbing rubber sleeve (62) on its outer cover. The shock-absorbing rubber sleeve (62) is integrally connected with the mute rubber sleeve (64). The shock-absorbing rubber sleeve (62) is provided with an insertion port (622) for the plug-in block (66) to be inserted. The inner wall shape of the shock-absorbing rubber sleeve (62) is adapted to the outer peripheral shape of the plug-in block (66). The shock-absorbing rubber sleeve (62) is provided with a plug hole (621) for the sound-generating contact (61) to pass through. The outer peripheral wall of the shock-absorbing rubber sleeve (62) is tightly pressed against the inner peripheral wall of the slot (67).

5. The audible and silent switching micro switch according to claim 4, characterized in that: The plug-in block (66) is penetrated by a material reduction hole (661) along its thickness direction, and the material reduction hole (661) penetrates one end of the plug-in block (66) along the length direction to form a plug-in opening (662). The plug-in block (66) is consistent with the length direction of the shock-absorbing rubber sleeve (62), and the plug-in interface (622) and the silent contact are respectively located at two ends of the shock-absorbing rubber sleeve (62) along the length direction. When the plug-in block (66) is arranged in the shock-absorbing rubber sleeve (62), one end of the plug-in opening (662) of the plug-in block (66) is located below the silent contact.

6. The audible and silent switching micro switch according to claim 3, characterized in that: A clamping block (68) is provided on one side of the slider (65) away from the push block (63), and two clamping slots (69) are provided in the movable slot (5). When the clamping block (68) is located in one of the clamping slots (69), the silent contact is directly opposite to the contact convex strip (8); when the clamping block (68) is located in the other clamping slot (69), the sound-generating contact (61) is directly opposite to the contact convex strip (8).

7. The audible and silent switching micro switch according to claim 6, characterized in that: An extension plate (9) is connected to the end of the slider (65); the length direction of the extension plate (9) is consistent with the length direction of the slider (65); a buffer gap (10) is left between the extension plate (9) and the slider (65); and the clamping block (68) is integrally connected to a side of the extension plate (9) away from the slider (65).

8. The audible and silent switching micro switch according to claim 7, characterized in that: The extension plate (9) is integrally connected to the slider (65), and the connection between the extension plate (9) and the slider (65) is an arc transition.

9. The audible and silent switching micro switch according to claim 5, characterized in that: The peripheral wall of the insertion port (622) is an inclined guide surface (11).

10. The audible and silent switching micro switch according to claim 1, characterized in that: The silent contact and the sounding contact (61) are both metal plates.

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