Micro switch with audible and silent state switching

Abstract

A micro switch with audible and silent state switching, comprising a base (1), an upper cover (2), a key (3), a driving plate (4), a stationary contact plate and a moving contact plate, wherein the base (1) is provided with a movement recess (5), a switching assembly (6) is provided in the movement recess (5), the switching assembly (6) comprises a sliding member, a sound-generating contact (61) and a silent contact, the sound-generating contact (61) and the silent contact are both arranged on the sliding member, a push block (63) is provided on a side wall of the sliding member, a sliding hole (7) allowing the push block (63) to move is provided on a side wall of the base (1), the push block (63) extends from the sliding hole (7) to an outer side of the base (1), and the sound-generating contact (61) and the silent contact are both arranged below the driving plate (4); when the sliding member drives the sound-generating contact (61) to slide to a position directly below the driving plate (4), the silent contact is offset from the position directly below the driving plate (4); and when the sliding member drives the silent contact to slide to the position directly below the driving plate (4), the sound-generating contact (61) is offset from the position directly below the driving plate (4). The present disclosure has the effect that by means of moving the push block (63) outside the base, the silent contact and the sound-generating contact (61) can be moved, thereby quickly and simply switching between a silent state and a sound-generating state and maintaining a continuous good hand feeling.

Description

A micro switch with or without sound Technical Field

[0001] The utility model relates to the field of micro switches, in particular to a micro switch with or without sound. Background Art

[0002] A microswitch is a signal input and output structure for keyboard keys. It consists of a housing, a key, a driver, a static contact piece, a moving contact piece, and a sounding contact. Pressing the key, which protrudes from the top wall of the housing, causes the driver to slide downward, which in turn drives the moving contact piece connected to the driver to move toward the static contact piece, causing the moving contact piece and the static contact piece to contact, thus achieving electrical conduction. Simultaneously with electrical conduction, the driver slides down and strikes the sounding contact, producing a sound. This ensures that the microswitch signal is connected and a corresponding sound is emitted, providing 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 methods are more troublesome to operate and can 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 micro switch for switching between sound and silence.

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

[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, a switching assembly being provided in the movable groove, the switching assembly comprising a sliding member, a sounding contact and a silent contact, the sounding contact and the silent contact being both provided 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 provided 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 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 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, 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 the other end, and a contact ridge is provided on the bottom wall of the driving plate; when the silent contact slides to the bottom of 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 the bottom of the driving plate, the sounding contact is opposite to the contact ridge.

[0008] Preferably, the sliding part 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 contact and the sounding contact are both arranged on the plug-in block, and the slider has an avoidance hole along the thickness direction, and the avoidance hole is connected to the slot.

[0009] Preferably, the outer shell of the plug-in block is provided with a shock-absorbing rubber sleeve, the shock-absorbing rubber sleeve is integrally connected with the silent rubber sleeve, the shock-absorbing rubber sleeve has an insertion interface for the plug-in block, 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-reducing hole along its own thickness direction, and the material-reducing hole penetrates one end of the plug-in block along the length direction to form a plug-in opening. The length direction of the plug-in block is consistent with that of the shock-absorbing rubber sleeve, and the plug-in interface and the silent contact are respectively located at the two ends of the shock-absorbing rubber sleeve along the length direction. 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 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 present invention 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 provided on the sliding member moves to the position directly below the driving plate, and the driving plate is driven by the key to hit the sound contact downward, thereby making a sound; when the micro switch needs to be adjusted to the silent state, the sliding member is moved, so that the silent contact provided on the sliding member moves to the position directly below the driving plate, and the driving plate is driven by the key to hit the silent contact downward, thereby achieving the same pressing feel as in the sound state, while no sound is made, thereby achieving a silent effect. The movement of the silent contact and the sound contact can be achieved by moving the push block outside the base, thereby quickly and easily switching between the silent state and the sound state and maintaining a stable and good feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the overall structure of a micro switch for switching between sound and soundless according to the present invention.

[0018] FIG2 is a schematic diagram illustrating the position structure of the driving plate and the sound switching component.

[0019] FIG. 3 is an exploded view illustrating a sound switching component.

[0020] FIG. 4 is a schematic structural diagram illustrating a mounting slot.

[0021] Explanation of the accompanying reference numerals: 1. base; 2. upper cover; 3. button; 4. drive plate; 5. movable slot; 6. switching assembly; 61. sound 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.

[0022] DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to Figures 1-4.

[0024] The present invention discloses a micro switch for switching between sound and silence. Referring to Figures 1 and 2, in this embodiment, a micro switch for switching between sound and silence includes a base 1, an upper cover 2, a button 3, a driving plate 4, a static contact plate, and a moving contact plate. The base 1 is provided with a movable groove 5, in which a switching assembly 6 is provided. The switching assembly 6 includes a sliding member, a sounding contact 61, and a silent contact. The sounding contact 61 and the silent contact are both provided on the sliding member. A push block 63 is provided on the side wall of the sliding member. A sliding hole 7 for displacement of the push block 63 is provided 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 silent contact are both provided below the driving plate 4. When the sliding member drives the sounding contact 61 to slide directly below the driving plate 4, the silent contact is offset from the position directly below the driving plate 4. When the sliding member drives the silent contact to slide directly below the driving plate 4, the sounding contact 61 is offset from the position directly below the driving plate 4.

[0025] The slider is disposed within the movable slot 5. When the microswitch needs to be adjusted to the sounding state, the push block 63 is pushed to slide the slider, causing the sounding contact 61 on the slider to move to the position directly below the drive plate 4. Driven by the key 3, the drive plate 4 strikes downward against the sounding contact 61, thereby producing a sound. When the microswitch needs to be adjusted to the silent state, the slider is moved, causing the silent contact on the slider to move to the position directly below the drive plate 4. Driven by the key 3, the drive plate 4 strikes downward against the silent contact, thereby achieving the same pressing feel as in the sounding state, while not producing a sound, thus achieving a silent effect. The silent contact and the sounding contact 61 can be moved by moving the push block 63 outside the base 1, thereby quickly and easily switching between the silent and sounding states while maintaining a stable and good feel.

[0026] 2 and 3 , in this 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 bullet-shaped, 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 the other end, and a contact ridge 8 is provided on the bottom wall of the driving plate 4; when the silent contact slides to the bottom of the driving plate 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 plate 4, the sounding contact 61 is opposite to the contact ridge 8.

[0027] The silent contact and the sounding contact 61 are of the same shape and are both provided on the sliding member. The provision of the contact ridge 8 can solve the problem of the height difference required 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 provided with a height difference, and the switching process does not require switching the top height position of the silent contact and the sounding contact 61. By simply providing the contact ridge 8, when the silent contact or the sounding contact 61 abuts the drive plate 4, the other contact is separated from the drive plate 4, making the overall structure more simple. At the same time, there is no need to completely move the non-working contact to offset it from the lower surface of the drive plate 4, which helps to reduce the overall volume required to be set up for the micro switch, making the overall structure of the micro switch more compact.

[0028] 2 and 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 provided 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.

[0029] 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 plug-in block 66 as a whole, which is beneficial to reduce the situation where the entire sliding part needs to be replaced when the silent contact or the sounding contact 61 is damaged, thereby reducing the cost of maintenance.

[0030] 2 and 3 , in this embodiment, a shock-absorbing rubber sleeve 62 is provided on the outer cover of the plug-in block 66 , and the shock-absorbing rubber sleeve 62 is integrally connected to the mute rubber sleeve 64 . The shock-absorbing rubber sleeve 62 has an insertion port 622 for inserting the plug-in block 66 . 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 has a socket 621 for the sound-emitting 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 .

[0031] The shock-absorbing rubber sleeve 62 is installed in the slot 67 together with the plug-in block 66. 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.

[0032] 2 and 3 , in this embodiment, the plug-in block 66 has a material reduction hole 661 passing through it along its thickness direction. The material reduction hole 661 passes through 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. The plug-in port 622 and the silent 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 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.

[0033] 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 space for the plug-in block 66 to deform, making it easier for the plug-in block 66 to be sleeved in the shock-absorbing rubber sleeve 62, making it less likely for the shock-absorbing rubber sleeve 62 to become fatigued due to the long-term placement of the solid plug-in block 66, and further causing 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.

[0034] 2 and 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 sounding contact 61 is opposite to the contact protrusion 8 .

[0035] The clamping block 68 is clamped in the clamping slot 69 , thereby fixing the switching assembly 6 as a whole in two states, which is beneficial to improving the stability of the two state settings.

[0036] Referring to Figures 2 and 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.

[0037] 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 on the block 68 during its movement, thereby providing deformation space for the entire sliding part for the switching of the slot 69, reducing the wear on the block 68 and making the block 68 less likely to be damaged or broken.

[0038] 2 and 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.

[0039] 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.

[0040] 2 and 3 , in this embodiment, the peripheral wall of the insertion port 622 is an inclined guide surface 11 .

[0041] 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 .

[0042] 2 and 3 , in this embodiment, both the silent contact and the sounding contact 61 are metal plates.

[0043] Both the silent and audible contacts 61 are frequently subjected to collision with the driver plate 4. The metal plate has good ductility, is resistant to collision, and is not easily deformed. It also protects the driver plate 4, reducing deformation caused by prolonged impact, thereby increasing the service life of the silent and audible contacts 61. In this embodiment, both the silent and audible contacts 61 are made of thick aluminum plates. In other embodiments, the silent and audible contacts 61 can be made of other harder metal plates, such as iron or silver.

[0044] 1 and 2 , in this embodiment, the sliding hole 7 passes through both the upper cover 2 and the side wall of the base 1 .

[0045] When the push block 63 slides, it simultaneously generates an impact force on the side walls of the upper cover 2 and the sliding hole 7 of the base 1, which is beneficial to reduce the misalignment of the upper cover 2 and the base 1, making the micro switch more compact as a whole.

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

Claims

1. A sound-on / sound-off switching microswitch, characterized in that: It includes a base (1), an upper cover (2), a button (3), a driving piece (4), a static contact piece, and a moving contact piece. The base (1) is provided with a movable groove (5), and a switching component (6) is arranged in the movable groove (5). The switching component (6) includes a sliding piece, a sounding contact (61), and a mute contact. Both the sounding contact (61) and the mute contact are arranged on the sliding piece. A pushing block (63) is arranged on the side wall of the sliding piece, and a sliding hole (7) for the displacement of the pushing block (63) is arranged on the side wall of the base (1). The pushing block (63) extends out of the base (1) from the sliding hole (7). Both the sounding contact (61) and the mute contact are arranged below the driving piece (4); when the sliding piece drives the sounding contact (61) to slide directly below the driving piece (4), the mute contact is offset from directly below the driving piece (4); when the sliding piece drives the mute contact to slide directly below the driving piece (4), the sounding contact (61) is offset from directly below the driving piece (4).

2. The audible and inaudible switching microswitch according to claim 1, characterized in that: The mute contact and the sounding contact (61) are hard blocks with the same shape. The outer periphery of the mute contact is covered with a mute rubber sleeve (64). The mute contact is in a bullet shape with a narrow upper part and a wide lower part. The cross-sectional area of one end of the mute contact close to the driving piece (4) is smaller than that of the other end. A contact rib (8) is arranged on the bottom wall of the driving piece (4); when the mute contact slides directly below the driving piece (4), the mute contact is aligned with the contact rib (8), and the sounding contact (61) is offset from the contact rib (8); when the sounding contact (61) slides directly below the driving piece (4), the sounding contact (61) is aligned with the contact rib (8).

3. The sound-on / sound-off switching microswitch according to claim 2, characterized in that: The sliding piece includes a slider (65) and a plug-in block (66). The slider (65) is integrally connected with the pushing block (63). The slider (65) is hollow to form a slot (67) for the plug-in of the plug-in block (66). Both the mute contact and the sounding contact (61) are arranged on the plug-in block (66). An avoidance hole (12) is arranged in the slider (65) along the thickness direction, and the avoidance hole (12) communicates with the slot (67).

4. The audible and inaudible switching microswitch according to claim 3, characterized in that: A shock-absorbing rubber sleeve (62) is sleeved outside the plug-in block (66). The shock-absorbing rubber sleeve (62) is integrally connected with the mute rubber sleeve (64). The shock-absorbing rubber sleeve (62) is provided with a plug-in opening (622) for the insertion of the plug-in block (66). The shape of the inner wall 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 jack (621) for the sounding contact (61) to pass through. The outer peripheral wall of the shock-absorbing rubber sleeve (62) is in tight contact with the inner peripheral wall of the slot (67).

5. The audible and inaudible switching microswitch according to claim 4, wherein: The plug-in block (66) is penetrated with a material-reducing hole (661) along its own thickness direction. The material-reducing hole (661) penetrates 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 the same as that of the shock-absorbing rubber sleeve (62). The plug-in interface (622) and the silent contact are respectively located at both 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 inaudible switching microswitch according to claim 3, wherein: A clamping block (68) is arranged on one side of the sliding block (65) away from the pushing block (63). Two clamping grooves (69) are arranged in the moving groove (5). When the clamping block (68) is located in one of the clamping grooves (69), the silent contact is opposite to the contact rib (8). When the clamping block (68) is located in the other clamping groove (69), the sounding contact (61) is opposite to the contact rib (8).

7. The audible and inaudible switching microswitch according to claim 6, characterized in that: An extension plate (9) is connected to the end of the sliding block (65). The length direction of the extension plate (9) is the same as that of the sliding block (65). A buffer gap (10) is left between the extension plate (9) and the sliding block (65). The clamping block (68) is integrally connected to the side of the extension plate (9) away from the sliding block (65).

8. The audible and inaudible switching microswitch according to claim 7, wherein: The extension plate (9) is integrally connected to the sliding block (65), and the connection part between the extension plate (9) and the sliding block (65) is in an arc transition.

9. The audible and inaudible switching microswitch according to claim 5, wherein: The peripheral wall of the plug-in interface (622) is an inclined guiding surface (11).

10. The audible and inaudible switching microswitch according to claim 1, wherein: Both the silent contact and the sounding contact (61) are metal plates.

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