CN218069681U

CN218069681U - Micro-switch

Info

Publication number: CN218069681U
Application number: CN202222171433.6U
Authority: CN
Inventors: 鲁文杰; 潘家全; 黎万腾; 高洪; 钱广
Original assignee: Dongnan Electronics Co ltd
Current assignee: Dongnan Electronics Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-12-16
Anticipated expiration: 2032-08-17

Abstract

The utility model discloses a micro-gap switch, including casing, button and first, second, the third electrically conducts, the casing inboard is provided with the contact bridge, is provided with elastic component between contact bridge and the first electrically conductive piece, and the second electrically conducts and all includes the supporting part with the third electrically conductive piece, and the other end of contact bridge is provided with first silver contact, all is provided with second silver contact on the supporting part of the second electrically conductive piece and the supporting part of the third electrically conductive piece, and first silver contact is including two first electrically conductive contact portions, and second silver contact is including the electrically conductive contact portion of second, the shape structure of first electrically conductive contact portion and the electrically conductive contact portion of second is the same, and all includes curved contact fitting surface, the lateral width of the electrically conductive contact portion of second is greater than the width of supporting part, and the electrically conductive contact portion both sides of second extend and be formed with the flank. The utility model discloses a micro-gap switch compares in prior art simple structure, electric life-span and stable performance better, the suitability is wider.

Description

Micro-switch

Technical Field

The utility model relates to a micro-gap switch.

Background

The existing microswitch generally comprises a shell, a button movably arranged on the shell, a first conductive piece, a second conductive piece and a third conductive piece, wherein the first conductive piece, the second conductive piece and the third conductive piece are arranged between the inner side and the outer side of the shell in a penetrating mode, a contact bridge is arranged on the inner side of the shell in a swinging mode, one end of the contact bridge is in conductive connection with the first conductive piece, the contact bridge is in compression contact with the second conductive piece through an elastic component, and the contact bridge can be driven to swing when the button is pressed, so that one end of the contact bridge is separated from the first conductive piece and is in conductive contact connection with the third conductive piece.

In order to avoid electric arcs or sparks generated when the contact bridge is in contact with the second conductive piece or the third conductive piece, silver contacts are generally welded and fixed at contact parts among the contact bridge, the second conductive piece and the third conductive piece of the existing microswitch, the silver contacts generally adopt a structure similar to a rivet, are small in size and poor in contact effect, can only meet the use of small current, and are short in service life and poor in stability when dealing with a large current environment.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a simple structure, electric life-span and stable performance are better, the wider micro-gap switch of suitability.

In order to achieve the above object, the present invention provides a micro switch, comprising a housing, a button disposed on the housing, and a first, a second and a third conductive members disposed between the inner and outer sides of the housing, wherein a contact bridge is disposed inside the housing, one end of the contact bridge is connected to the first conductive member in a swing manner, the other end of the contact bridge is in conductive contact with the second conductive member or the third conductive member in a swing manner, the button is used for driving the contact bridge to swing, an elastic member for driving the contact bridge to reset is disposed between the contact bridge and the first conductive member, the second conductive member and the third conductive member each include a support portion disposed inside the housing, the support portions of the second conductive member and the third conductive member are disposed at two sides along the swing direction of the other end of the contact bridge, the other end of contact bridge is provided with first silver contact, all is provided with on the supporting part of the second conductive spare and the supporting part of the third conductive spare and contacts electrically conductive second silver contact with the cooperation of first silver contact, and first silver contact is including corresponding two first electrically conductive contact portions that set up in the both sides of the other end edge swing direction of contact bridge, and second silver contact is including the electrically conductive contact portion of second with the electrically conductive contact portion cooperation contact of first electrically conductive contact portion, the shape structure of first electrically conductive contact portion and the electrically conductive contact portion of second is the same, and all includes curved contact fitting surface, the lateral width of the electrically conductive contact portion of second is greater than the width that corresponds the complex supporting part of being connected with it, and the relative both sides of supporting part in second electrically conductive contact portion both sides extend and are formed with the flank.

Furthermore, the first silver contact comprises a first component and a second component, one end of the first component is provided with the first conductive contact part, the other end of the contact bridge is provided with a connecting hole, the other end of the first component is provided with a first plugging part which is matched and plugged with the connecting hole, the first plugging part comprises a plugging hole, one end of the second component is provided with the first conductive contact part, and the other end of the second component is provided with a second plugging part which is matched and plugged and fixed with the plugging hole.

Furthermore, the width of the second inserting part is gradually reduced towards the front end direction of the second inserting part.

Furthermore, the two first conductive contact parts of the first silver contact are correspondingly welded and fixed on two sides of the other end of the contact bridge along the swinging direction.

Furthermore, one end of the second silver contact comprises the second conductive contact part, the other end of the second silver contact comprises a riveting part which is matched and riveted with the supporting part, the supporting part is provided with a riveting hole which is matched and riveted with the riveting part, one corresponding side of the two supporting parts is provided with a first port communicated with the riveting hole, and at least one side of the supporting part is provided with a second port communicated with the riveting hole.

Furthermore, the two sides of the riveting part and the two sides of the supporting part are further fixed by welding after the riveting part and the supporting part are riveted.

Furthermore, the end part of the riveting part is provided with a first limiting part, and the riveting hole is provided with a second limiting part which is matched with the first limiting part to prevent the riveting part from coming off from the first port.

The utility model has the advantages that: because the angle of its first silver contact also can change along with it when contacting the swing of bridge, adopt the same shape structure and have the first electrically conductive contact site and the second electrically conductive contact site of arc contact fitting surface and have better contact effect when electrically conductive the cooperation to the flank that second electrically conductive contact site both sides formed can further improvement first silver contact and the area of contact between the second silver contact, therefore have better life and stability when dealing with great electric current environment.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a disassembled view of the embodiment of the present invention;

fig. 3 is an assembly schematic view of conductive members according to an embodiment of the present invention;

fig. 4 is an assembly schematic view of a first silver contact according to an embodiment of the present invention;

fig. 5 is a schematic assembly view 1 of a second silver contact according to an embodiment of the present invention;

fig. 6 is an assembly diagram 2 of a second silver contact according to an embodiment of the present invention.

Detailed Description

The embodiment of the micro switch of the utility model is shown in fig. 1-6, which comprises a shell 1, a button 2 arranged on the shell 1, and a first, a second and a third conductive pieces (3,4,5) arranged between the inner and outer sides of the shell 1, wherein the shell 1 is composed of an upper shell 11, a base 12 and a waterproof cover 13, the upper shell 11 is movably connected with the button 2, a waterproof jacket 6 is arranged between the button 2 and the upper shell 11, an inner cavity is formed between the upper shell 11 and the base 12, one end of the first, the second and the third conductive pieces is arranged in the inner cavity of the shell, the other end is provided with a wiring terminal, the waterproof cover 13 is arranged outside the wiring terminals of the first, the second and the third conductive pieces in a covering manner and is used for pouring waterproof glue at the wiring position of the wiring terminal, the inner side of the shell 1 is provided with a contact bridge 71, one end of the contact bridge 71 is connected with the first 3 in a matching swing manner, the other end of the contact bridge 71 is in conductive contact with the second conductive piece 4 or the third conductive piece 5 through swinging, the button 2 is used for driving the contact bridge 71 to swing, the button 2 can be directly pressed on the contact bridge 71 and can also be indirectly driven through a transmission piece and the contact bridge 71, an elastic component 72 for driving the contact bridge 71 to reset is arranged between the contact bridge 71 and the first conductive piece 3, the second conductive piece 4 and the third conductive piece 5 respectively comprise supporting parts (40 and 50) arranged on the inner side of the shell 1, the supporting part 40 of the second conductive piece and the supporting part 50 of the third conductive piece are distributed and arranged on two sides along the swinging direction of the other end of the contact bridge 71, the other end of the contact bridge 71 is provided with a first silver contact 8, the supporting part 40 of the second conductive piece and the supporting part 50 of the third conductive piece are respectively provided with a second silver contact 9 which is in conductive contact with the first silver contact 8, the first silver contact 8 comprises two first conductive contact parts 81 correspondingly arranged on two sides of the contact bridge 71, the second silver contact 9 comprises a second conductive contact part 91 which is matched with the first conductive contact part 81 to be in contact with the first conductive contact part for conduction, the first conductive contact part 81 and the second conductive contact part 91 are both in a square structure and comprise arc-shaped contact matching surfaces (810 and 910), the lateral width of the second conductive contact part 91 is greater than that of a supporting part (40 or 50) correspondingly connected and matched with the second conductive contact part 91, and two sides of two opposite supporting parts of the second conductive contact part 91 extend to form side wings 911 (see fig. 6).

The lateral width of the second conductive contact part 91 can be increased by the arrangement of the side wings 911, so that the contact area between the first conductive contact part 81 and the second conductive contact part 91 can be increased, the product can be more suitable for use in a high-current link, the contact effect between contacts can be improved by the arrangement of the arc-shaped contact matching surface, the stability of a microswitch product can be improved, and the service life and the stability are improved. The utility model discloses in the material of the main application of silver contact have silver, copper, iron, aluminium etc. generally need be with its silvering to strengthen its electrically conductive efficiency and prevent the oxidation, the composition of silver contact constitutes and belongs to the common technique in electrical switch field.

In this embodiment, as shown in fig. 4, the first silver contact 8 includes a first component and a second component, one end of the first component is provided with the first conductive contact portion 81, the other end of the contact bridge 71 is provided with a connection hole 710, the size of the connection hole 710 is smaller than that of the first conductive contact portion 81, the other end of the first component is provided with a first insertion portion 82 which is inserted into the connection hole 710 in a matching manner, the first insertion portion 82 includes an insertion hole 821, one end of the second component is provided with the first conductive contact portion 81, the other end of the second component is provided with a second insertion portion 83 which is inserted into the insertion hole 821 in a matching manner, and the width of the second insertion portion 83 is gradually reduced toward the front end thereof. Utilize the grafting cooperation of tight fit between second grafting portion 83 and the spliced eye 821, realize fixed the connection between first component part, the second component part, keep first silver contact 8 joint in the connecting hole 710 of contact bridge 71 simultaneously, simple structure, simple to operate can its reliability of location.

In another embodiment, the two first conductive contact portions 81 of the first silver contact are correspondingly welded and fixed on two sides of the other end of the contact bridge 71 along the swinging direction, so that the structure of the first silver contact can be simplified, and the production and the processing of parts are facilitated.

In this embodiment, one end of the second silver contact 9 includes the second conductive contact portion 91, the other end of the second silver contact 9 includes a riveting portion 92 that is in riveting fixation with a support portion, a riveting hole 60 that is in riveting fixation with the riveting portion 92 is provided on the support portion (40 or 50), a first port that is communicated with the riveting hole 60 is provided on one corresponding side of each of the two support portions, a connection portion between the first port and the second conductive contact portion 91 is provided for passing through, and second ports that are communicated with the riveting hole 60 are provided on two sides of the support portion. During installation, the riveting part 92 of the second silver contact 9 can be installed in the riveting hole 60 along the second opening, and is pressed and fixed in a riveting mode, and the parts of the two sides of the riveting part extending out from the second opening are further fixed between the two sides of the supporting part in a welding mode. Riveting portion 92 is T style of calligraphy structure, and riveting portion 92's tip has first spacing portion, and the riveting hole has the spacing portion of second that cooperates with first spacing portion in order to prevent that riveting portion 92 from deviating from first mouth, and the cooperation through first spacing portion and second spacing portion can further improve the connection effect between riveting portion 92 and the riveting hole 60, also makes things convenient for the preinstallation between two parts before the riveting.

The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a micro-gap switch, including the casing, set up the button on the casing and wear to establish first, second, the third between the casing inside and outside electrically conductive, the casing inboard is provided with the contact bridge, and the one end of contact bridge is connected with the cooperation swing of first electrically conductive piece, and the other end of contact bridge is through swing and the electrically conductive contact cooperation of second electrically conductive piece or the electrically conductive piece of third, and the button is used for the drive the swing of contact bridge is provided with the elastic component who is used for driving the contact bridge to reset between contact bridge and the first electrically conductive piece, its characterized in that: the second conductive piece and the third conductive piece respectively comprise a supporting part arranged on the inner side of the shell, the supporting parts of the second conductive piece and the third conductive piece are distributed on two sides along the swinging direction of the other end of the contact bridge, the other end of the contact bridge is provided with a first silver contact, the supporting parts of the second conductive piece and the third conductive piece are respectively provided with a second silver contact which is in fit contact with the first silver contact and is conductive, the first silver contact comprises two first conductive contact parts correspondingly arranged on two sides of the other end of the contact bridge along the swinging direction, the second silver contact comprises a second conductive contact part which is in fit contact with the first conductive contact parts and is conductive, the first conductive contact part and the second conductive contact part are same in shape and structure and respectively comprise arc-shaped contact matching surfaces, the lateral width of the second conductive contact part is larger than the width of the supporting part corresponding to the second conductive contact part, and two sides of the second conductive contact part extend to two sides of the supporting part to form side wings.

2. The microswitch of claim 1, wherein: the first silver contact comprises a first component and a second component, wherein one end of the first component is provided with the first conductive contact part, the other end of the contact bridge is provided with a connecting hole, the other end of the first component is provided with a first inserting part which is matched and inserted with the connecting hole, the first inserting part comprises an inserting hole, one end of the second component is provided with the first conductive contact part, and the other end of the second component is provided with a second inserting part which is matched and inserted and fixed with the inserting hole.

3. The microswitch of claim 2, wherein: the width of the second inserting part is gradually reduced towards the front end direction of the second inserting part.

4. The microswitch of claim 1, wherein: and the two first conductive contact parts of the first silver contact are correspondingly welded and fixed on two sides of the other end of the contact bridge along the swinging direction.

5. The microswitch of claim 1, wherein: one end of the second silver contact comprises a second conductive contact part, the other end of the second silver contact comprises a riveting part which is matched and riveted with the supporting part, a riveting hole which is matched and riveted with the riveting part is formed in the supporting part, a first opening which is communicated with the riveting hole is formed in one corresponding side of each of the two supporting parts, and a second opening which is communicated with the riveting hole is formed in at least one side of the supporting part.

6. The microswitch of claim 5, wherein: and the two sides of the riveting part and the two sides of the supporting part are further fixed by welding after the riveting part and the supporting part are riveted.

7. The microswitch of claim 5, wherein: the end part of the riveting part is provided with a first limiting part, and the riveting hole is provided with a second limiting part which is matched with the first limiting part so as to prevent the riveting part from being separated from the first port.