CN216902618U - Mute microswitch - Google Patents

Abstract

The utility model discloses a mute microswitch which comprises an upper cover, a base, a first contact terminal, a second contact terminal, a contact piece, an elastic piece and a pressing handle, wherein the first contact terminal and the second contact terminal are both arranged on the base, a placing groove is arranged between the first contact terminal and the second contact terminal on the base, the elastic piece is arranged in the placing groove, the pressing handle is arranged on the contact piece, the pressing handle is arranged above the elastic piece and is in contact with the elastic piece, one end of the contact piece is connected with the first contact terminal, and a contact is arranged at the other end of the contact piece. Through the technical scheme that the contact piece in the prior art is used for bearing the deformation function and the electric connection function, the connection piece is changed into the technical scheme that the connection piece is used for bearing the electric connection function, an independent elastic piece is additionally arranged to serve as an ascending and descending elastic source of the connection piece, and then the elastic piece is muted in the deformation process to achieve the silencing effect.

Description

Mute microswitch

Technical Field

The utility model relates to the field of microswitches, in particular to a mute microswitch.

Background

At present, with the diversification of use scenes, people have different requirements on the key sounds of a mouse and a keyboard in different occasions. In some particular situations, it is undesirable for a user to make a sound when pressing a keyboard, mouse, or other device involving a microswitch.

For a common microswitch, the sound is mainly generated due to the deformation of the structure of the microswitch, the sound is generated in the resetting process or the deformation. During the resetting process, the device collides with other parts to generate sound. In order to solve the above problems, for example, in chinese patent 2021207768559, a technical solution for adding a sound-absorbing pad is provided to solve the problem of sound generated by impact, and reduce the sound generated during the upward and downward movement of the resilient plate.

However, with the above prior art, it is still found that there is a certain sound in use, and although the sound of striking of the elastic sheet can be effectively reduced by the sound-absorbing pad, the sound emitted during the upward and downward movement cannot be eliminated because of the deformation of the elastic sheet itself, which is determined by the structure of the elastic sheet. On the one hand, the spring plate is used as a contact piece and takes charge of the function of electric connection between the contact terminals, so a metal sheet is needed to be used, on the other hand, the metal sheet is effectively contacted with the fixed end in the processes of ascending and descending in order to realize the ascending and descending, and therefore a bent contact position is needed to be arranged, the bent position cannot be too small, otherwise, larger elasticity cannot be provided, and the ascending or descending of the spring plate is realized. However, the consequence of the large bending position is that a slight "click" is produced during the upward and downward movement of the deformation of the spring, which is a noise determined by the structure of the spring itself.

SUMMERY OF THE UTILITY MODEL

The mute microswitch is characterized by comprising an upper cover, a base, a first contact terminal, a second contact terminal, a contact piece, an elastic piece and a pressing handle, wherein the first contact terminal and the second contact terminal are arranged on the base, a placing groove is formed in the base between the first contact terminal and the second contact terminal, the elastic piece is arranged in the placing groove, the pressing handle is arranged on the contact piece, the pressing handle is arranged above the elastic piece and is in contact with the elastic piece, one end of the contact piece is connected with the first contact terminal, and a contact is arranged at the other end of the contact piece. Through with among the prior art contact piece both undertake elastic deformation's function and the function of electricity connection part, add the shell fragment setting and pressing the handle below, the contact piece is connected with first terminal, when making the contact piece go upward or down when needs elastic deformation, carry out elastic deformation by the shell fragment that sets up in the standing groove to solved among the prior art, must undertake the problem that elastic deformation leads to taking place by connection piece itself. In addition, the elastic sheet is arranged between the first terminal and the second terminal, so that the pressing handle is arranged above the elastic sheet, the overall size of the switch is reduced, and the elastic effect of pressing by the pressing handle is guaranteed.

Preferably, the shape of the elastic sheet is a whole flat and convex shape, and the edge of the elastic sheet and the edge in the placing groove have a certain space suitable for the elastic sheet to deform and extend. When the flat convex elastic sheet is deformed, the deformation degree is not large relative to elastic sheets with convex structures, so that the shape is changed without making sound, the purpose of noise elimination is achieved, and meanwhile, the flat convex is beneficial to reducing the overall height of the micro switch and the overall volume.

Preferably, the placing groove is a through groove structure with two open ends. The structure of the through groove is beneficial to the placement of the flat and convex elastic sheets.

Preferably, the upper cover and the base can be mutually buckled and connected, the upper cover is provided with a pressing handle hole, the pressing handle can stretch out of the upper cover through the pressing handle hole, and the through groove openings on two sides of the placing groove can be shielded by the inner side of the upper cover. After the upper cover and the lower cover cooperate, the openings on the two sides of the placing groove can be sealed on the inner side of the upper cover, so that the position of the elastic sheet is limited in the space formed by the placing groove and the upper cover, the position of the elastic sheet is fixed, and meanwhile, a certain distance is reserved between the elastic sheet and the edge on the inner side of the placing groove, and therefore, the work of the elastic sheet is not influenced.

Preferably, the contact piece on be provided with the elasticity bayonet socket, the elasticity bayonet socket be connected with first contact terminal, the elasticity bayonet socket including crooked piece, crooked piece only one side be connected with the contact piece, crooked piece length no longer than half of contact piece length, crooked piece set up in one side according to the handle. The elastic bayonet is favorable for the contact piece to be effectively contacted with the first contact terminal when the contact piece moves, and effective electric connection is ensured. The short bent piece does not cause the whole contact piece to deform greatly in the ascending or descending process of the contact piece, so that no sound is produced. The bending piece is arranged on one side of the pressing handle, so that the size of the bending piece can be effectively limited on one hand, and on the other hand, the contact piece is convenient to process.

Preferably, the first contact terminal is further provided with a locking interface, the locking structure is in a notch shape, and the locking interface can be locked with the tail end of the bent piece in a matching mode. The card interface and the terminal card of crooked piece, the crooked elastic deformation of crooked piece self can make its self elasticity card on the card interface of fixing, go upward or down the in-process at the contact piece, the terminal of crooked piece can effectively fix on the card interface of fixing for crooked piece is gone upward or is down along with the contact piece, thereby realizes effectual electricity and connects.

Preferably, the device also comprises a bearing strip, and the bearing strip is arranged at the bottom of the placing groove. The effect of bearing strip is the intensity that improves the standing groove base, prevents that the shell fragment from fish tail standing groove's surface after deformation many times for the whole loss of standing groove warp.

Preferably, the bearing strip and first contact terminal or second contact terminal structure as an organic whole, bearing strip and first contact terminal or second contact terminal structure as an organic whole are favorable to production and processing, reduce spare part quantity, reduce the equipment degree of difficulty, improve the structural strength of bearing strip.

Preferably, the bearing strip is exposed out of the surface of the placing groove and is flush with the surface of the placing groove. The surface of standing groove is exposed to the bearing strip, and flushes with the standing groove and can make at shell fragment deformation in-process, can partly contact with the bearing strip who exposes the standing groove surface, improves the wearability of standing groove, reduces because of pressing the shell fragment many times for shell fragment edge scratch standing groove surface.

Preferably, the device further comprises a wear-resistant surface, and the wear-resistant surface is arranged on the surface of the placing groove. Wear-resisting surface can effectively reduce the damage of shell fragment to the standing groove surface, improves holistic life.

The utility model has the following technical effects:

1. the internal structure is changed, and the noise elimination effect is achieved. Through the technical scheme that the contact piece in the prior art is used for bearing the deformation function and the electric connection function, the connection piece is changed into the technical scheme that the connection piece is only used for bearing the electric connection function, an independent elastic piece is additionally arranged to serve as an ascending and descending elastic source of the connection piece, and then through the design of the elastic piece structure, the elastic piece is silent in the deformation process, so that the structural reason of the occurrence of the microswitch is solved, the multiple function limitation of the connection piece in the prior art is solved, and the silencing effect is realized.

2. The volume change is small. In structural design, on one hand, the elastic sheet is arranged between the first contact terminal and the second contact terminal, the space between the contact terminals is effectively utilized, compared with the integral contact sheet design in the prior art, the required length space change is small, and on the other hand, the elastic sheet is in a flat convex shape, so that the height change is small compared with the prior art, and compared with the prior art, the technical scheme of the utility model has small volume change, can directly replace the existing micro switch with the same specification, and is convenient for product updating and market popularization.

3. The production process is simple and easy, and the cost is easy to control. The standing groove on the base is integrated into one piece, and the setting of shell fragment is because the standing groove also is convenient for place for leading to the groove, and consequently the technology of whole equipment is the same with prior art, only increases a shell fragment in the part cost, and the cost is lower, but the result of use that obtains promotes obviously, consequently has higher economic benefits.

4. The structure between shell fragment and standing groove is wear-resisting, difficult ageing. Through increasing bearing strip and wear-resisting surface, can effectively reduce because the shell fragment presses the damage that deformation leads to causing with the friction on standing groove surface many times for this technical scheme's life is not less than prior art's life.

Drawings

Fig. 1 is an exploded view of the structure in example 1 of this patent.

Fig. 2 is a structural view of a first contact terminal and a second contact terminal in embodiment 1 of this patent.

Fig. 3 is a drawing showing an assembly structure without an upper cover in embodiment 1 of this patent.

Fig. 4 is a fully assembled configuration diagram in embodiment 1 of this patent.

Fig. 5 is a sectional view taken along a-a direction in fig. 4.

Wherein, 1 is an upper cover, 11 is a press handle hole, 2 is a base, 3 is a first contact terminal, 31 is a clamping interface, 4 is a second contact terminal, 5 is a contact piece, 51 is a contact, 52 is an elastic bayonet, 521 is a bending piece, 6 is an elastic piece, 7 is a press handle, 71 is a bulge, 8 is a placing groove, and 9 is a bearing strip.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand for those skilled in the art and will therefore make the scope of the utility model more clearly defined.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "head", "tail", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example 1

In this embodiment, as shown in fig. 1 and fig. 2, the first contact terminal 3 and the second contact terminal 4 are included, wherein the first contact terminal 3 is provided with a locking interface 31, and the locking interface 31 is shaped like an inwardly recessed notch to facilitate abutting. A bearing strip 9 is arranged below the first contact terminal 3, the bearing strip 9 and the first contact terminal 3 are of an integral structure, and the thickness of the first contact terminal 3 is the same as that of the bearing strip 9. The upper surface of the second contact terminal 4 is provided with a contact bump for making contact with the contact 51 on the contact piece 5. The bearing strip 9 is a horizontal elongated structure, and the upper surface thereof is a smooth surface. The first contact terminal 3 and the second contact terminal 4 are arranged on the base 2, and are spaced by a certain distance, a placing groove 8 is arranged on the base 2 between the first contact terminal 3 and the second contact terminal 4, the placing groove 8 is a through groove structure with two open sides, the two sides are provided with boss structures extending towards the center of the placing groove 8, the boss structures extending towards the center and the bottom of the placing groove 8 jointly form an accommodating space for placing the elastic sheet 6, the boss can limit the position of the elastic sheet 6, and the elastic sheet 6 cannot be separated from the placing groove 8 directly above the placing groove 8. The upper surface of the load-bearing bar 9 integrally connected to the first contact terminal 3 is exposed just above the center of the surface of the mounting groove 8 and flush with the surface of the mounting groove 8.

In this embodiment, the elastic sheet 6 is a flat protrusion structure, the upper and lower edges of which are arc-shaped structures, and the two sides of which are parallel notches. Adopt the benefit of this structure to receive extrusion when deformation downwards at shell fragment 6, the position that its lower limb is the longest, circular-arc furthest department promptly, can at first deform, this department is the biggest with the frictional degree on standing groove 8 surface promptly, but because the standing groove 8 surface of this department, expose the bearing strip 9 on standing groove 8 surface just, consequently 6 direct fricative positions of shell fragment are bearing strip 9 in fact, consequently reduce standing groove 8 surface influence, improve overall structure's life. The shell fragment 6 is placed in standing groove 8, and the edge of shell fragment 6 and the edge in the standing groove 8 have certain space that is suitable for shell fragment 6 deformation to extend.

In the embodiment, the pressing handle 7 is arranged on the contact piece 5, and the specific structure is that the pressing handle 7 is arranged in the middle of the contact piece 5, and the pressing handle 7 is wrapped in the middle of the contact piece 5. A step convex structure is arranged above the pressing handle 7, so that the pressing handle 7 can conveniently extend out of the hole 11 of the pressing handle 7 of the upper cover 1, and a user can conveniently press the pressing handle. A bulge 71 is arranged below the press handle 7, and the bulge 71 can effectively transmit the pressure received by the press handle 7 to the surface of the elastic sheet 6. An elastic bayonet 52 is provided at one end of the contact piece 5 connected to the first contact terminal 3. The elastic bayonet 52 is specifically composed of a bent piece 521 and a space convenient for being clamped with the first contact terminal 3, the bent piece 521 is specifically bent, one side of the bent piece 521 is connected with the contact piece 5, and the other side of the bent piece 521 is abutted to the elastic bayonet 52 on the first contact terminal 3. In the space of the elastic bayonet 52 convenient for being clamped with the first contact terminal 3, the first contact terminal 3 can be smoothly clamped into the elastic bayonet 52, and meanwhile, due to the elastic action of the bent piece 521 and the abutting relation with the elastic bayonet 52, the bent piece 521 can still be effectively released from the first contact terminal 3 in the ascending or descending process of the contact piece 5, and the electrical connection is kept. At one end of the contact piece 5 connected to the second contact terminal 4, a contact 51 is provided.

Realize combining through the lock between upper cover 1 and the base 2, after upper cover 1 combines with base 2 simultaneously, 1 inboard of upper cover just with the standing groove 8 both sides opening cooperation on the base 2 for the logical groove opening of 8 both sides of standing groove can be sheltered from to the inboard of upper cover 1. After the elastic sheet 6 is combined with the upper cover 1 and the base 2, on one hand, due to the action of the bosses on the two sides of the placing groove 8, the upper and lower spatial positions are limited, and meanwhile, the elastic sheet can not be separated from the placing groove 8 through the right upper part; on the other hand, since the upper cover 1 blocks the openings on both sides of the placement groove 8, the elastic pieces 6 cannot be separated from the placement groove 8 through the openings on both sides of the placement groove 8. Thus, the fixing of the position of the spring 6 is achieved.

This embodiment is assembled as shown in figures 3 and 4.

In operation, as shown in fig. 5, the present embodiment is operated by the user pushing the push handle 7 which exposes the upper cover 1. On one hand, in the process of downward movement of the pressing handle 7, the contact piece 5 is driven to move downward, and at this time, because the contact piece 5 is connected with the first contact terminal 3 through the elastic bayonet 52, the elastic bayonet 52 is bent, but still keeps the connection with the first contact terminal 3; the second contact terminal 4 is connected to the contact piece 5 through the contact 51, and the first contact terminal 3 is electrically connected to the second contact terminal 4 through the contact piece 5. On the other hand, in the process of downward movement of the pressing handle 7, the protrusion 71 at the bottom of the pressing handle 7 can extrude the elastic sheet 6 arranged on the placing groove 8, as can be clearly understood in fig. 5, under the condition that the elastic sheet 6 is not pressed, the edge of the elastic sheet 6 and the edge in the placing groove 8 have a certain space suitable for deformation and extension of the elastic sheet 6, and after the elastic sheet 6 is pressed, the elastic sheet 6 deforms and extends towards the edge of the placing groove 8. In this deformation process, because shell fragment 6 is circular-arc edge from top to bottom, both sides are the domes of parallel incision structure, therefore the direction of extension is the extension of upper and lower direction, simultaneously because again from top to bottom be circular-arc, consequently the most distal end of circular arc is at first atress deformation, its direct friction sets up the upper surface on the bearing strip 9 on the standing groove 8 surface in this department just, consequently can not lead to the fact great damage to remaining standing groove 8 surface.

After the user loosens the pressing handle 7, the elastic sheet 6 is restored under the action of elastic potential energy, the pressing handle 7 is jacked up by the upper surface of the elastic sheet 6, the pressing handle 7 drives the contact piece 5 to move upwards, so that the second contact terminal 4 is separated from the contact 51 of the contact piece 5, and the electrical separation of the first contact terminal 3 and the second terminal is realized.

Example 2

The difference between this embodiment and embodiment 1 is that the upper and lower parts of the elastic sheet 6 in this embodiment are flush, and both sides are parallel interface structures, and the overall shape is a flat convex arch structure.

Example 3

The present embodiment is different from embodiment 1 in that the load-bearing bars 9 of the present embodiment are independent structures and are independently disposed on the surface of the placing groove 8.

Example 4

The difference between this embodiment and embodiment 1 lies in, and this embodiment is still including wear-resisting surface, and wear-resisting surface sets up on 8 surfaces of standing groove, and shell fragment 6 sets up on wear-resisting surface, can rub with wear-resisting surface when shell fragment 6 deforms, does not wear and tear 8 surfaces of standing groove, improves whole life.

Example 5

The present embodiment differs from embodiment 4 in that the wear surface of the present embodiment is of one-piece construction with the load carrying bar 9.

Example 6

The present embodiment differs from embodiment 5 in that the wear surface, the load-bearing strip 9 and the first contact terminal 3 of the present embodiment are of a unitary construction.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A mute microswitch is characterized by comprising an upper cover (1), a base (2), a first contact terminal (3), a second contact terminal (4), a contact piece (5), an elastic piece (6) and a pressing handle (7), the first contact terminal (3) and the second contact terminal (4) are both arranged on the base (2), the base (2) is provided with a plurality of contact holes, a placing groove (8) is arranged between the first contact terminal (3) and the second contact terminal (4), the elastic sheet (6) is arranged in the placing groove (8), the pressing handle (7) is arranged on the contact sheet (5), the pressing handle (7) is arranged above the elastic sheet (6), the contact piece is in contact with the elastic piece (6), one end of the contact piece (5) is connected with the first contact terminal (3), and the other end of the contact piece (5) is provided with a contact (51).

2. The mute microswitch as in claim 1, wherein the spring plate (6) is in the shape of an integral flat bulge, and the edge of the spring plate (6) and the edge in the placing groove (8) have a certain space suitable for the deformation and extension of the spring plate (6).

3. A mute microswitch as claimed in claim 2, wherein the holding slot (8) is a through slot structure with two open ends.

4. A mute microswitch according to claim 3, wherein the upper cover (1) and the base (2) can be mutually buckled and connected, the upper cover (1) is provided with a press handle (7) hole (11), the press handle (7) can extend out of the upper cover (1) through the press handle (7) hole (11), and the through slot openings at two sides of the placing slot (8) can be shielded by the inner side of the upper cover (1).

5. The mute microswitch as in claim 1, wherein the contact piece (5) is provided with an elastic bayonet (52), the elastic bayonet (52) is connected with the first contact terminal (3), the elastic bayonet (52) comprises a bent piece (521), only one side of the bent piece (521) is connected with the contact piece (5), the length of the bent piece (521) is not more than one half of the length of the contact piece (5), and the bent piece (521) is arranged on one side of the press handle (7).

6. A mute microswitch according to claim 5, wherein the first contact terminal (3) is further provided with a locking interface (31), the locking structure is in a notch shape, and the locking interface (31) can be matched and locked with the tail end of the bent sheet (521).

7. The mute microswitch of claim 1, further comprising a bearing bar (9), wherein the bearing bar (9) is arranged at the bottom of the placing groove (8).

8. A mute microswitch according to claim 7, characterised in that the load carrying bar (9) is of integral construction with the first contact terminal (3) or the second contact terminal (4).

9. A silent microswitch according to claim 7, wherein the load carrying bar (9) is exposed at the surface of the placement groove (8) and is flush with the surface of the placement groove (8).

10. A mute microswitch according to claim 1 further comprising a wear surface, said wear surface being disposed above the surface of the holding tank (8).

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