CN108320967B

CN108320967B - Novel micro-gap switch

Info

Publication number: CN108320967B
Application number: CN201810175187.7A
Authority: CN
Inventors: 付东; 赖冰焕
Original assignee: Huizhou Gateron Electronic Technology Co ltd
Current assignee: Huizhou Gateron Electronic Technology Co ltd
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2023-10-20
Anticipated expiration: 2038-03-02
Also published as: CN108320967A

Abstract

The novel micro switch comprises a base, an upper shell, a pressing part, a spring and an elastic sheet, wherein a common terminal and an output terminal are arranged on the base, the lower part of each terminal extends out of the base, the pressing part is arranged on the upper shell, the pressing part slides up and down relative to the base, the spring is arranged right below the pressing part in the base, a mounting column is arranged on the base, the elastic sheet comprises a clamping part and an elastic part, an outward protruding part I is arranged on the elastic part, a contact I is arranged at the lower end of the elastic part, and a contact II is arranged on the output terminal; the pressing mechanism is provided with a driving part, and the first contact and the second contact are connected or disconnected when contacting, so that a connection or disconnection signal is generated. The switch has reasonable structural design, the elastic sheet is stably arranged on the base, and the elastic sheet is driven by the driving of the pressing mechanism to press so as to realize the connection or disconnection of signals, so that the switch has very stable and reliable working performance, simplifies the process, reduces the production cost, has longer service life and greatly improves the market competitiveness of enterprises.

Description

Novel micro-gap switch

Technical Field

The invention belongs to the technical field of micro-switches, and particularly relates to an improvement of a micro-switch structure.

Background

At present, the micro-switch is widely applied to industrial control, such as products of home appliances or automobiles, and the like, has various types, and has the defects of unstable and reliable contact performance, various parts, complex process, high cost, short service life and the like, cannot meet the requirement of industrial rapid development, and reduces the market competitiveness of enterprises.

Disclosure of Invention

The invention aims to solve the technical problem of providing the micro switch which has more stable and reliable performance, lower cost and longer service life.

In order to solve the technical problems, the invention adopts the following technical scheme:

the novel micro switch comprises a base, an upper shell, a pressing die and a spring, wherein the upper shell is connected with the base, the pressing die and the spring are arranged on the base, the common terminal and the output terminal are normally open terminals or normally closed terminals, the lower part of each terminal extends out of the base, the pressing die is arranged on the upper shell and slides up and down relative to the base, the spring is arranged right below the pressing die in the base, a mounting column for sleeving the spring is arranged on the base, the novel micro switch further comprises a spring piece arranged on the base, the spring piece comprises a clamping part positioned at the upper part and an elastic part positioned at the middle lower part of one side of the spring piece, the elastic part is provided with a first outwards protruding part, the lower end of the elastic part is provided with a first contact, and the output terminal is provided with a second contact corresponding to the first contact; the pressing mechanism is provided with a driving part which drives the first inner pressure of the protruding part to enable the first contact to be contacted with the second contact, and the first contact is connected with or disconnected from the second contact when the first contact is contacted with the second contact, so that a connection or disconnection signal is generated.

Preferably, the elastic portion extends downward from the side edge of the clamping portion.

Preferably, the contact surface between the driving part and the first protrusion is a flat surface.

Preferably, a second protrusion facing inward is provided on a contact surface between the driving portion and the first protrusion.

Preferably, a notch is formed on one side of the spring clamping portion, and the clamping portion is connected with the base in a clamping manner through the notch.

Preferably, a fastening hole is formed on the other side of the elastic sheet clamping part, and a boss matched with the fastening hole is arranged at the corresponding position of the fastening hole on the base.

Preferably, any two symmetrical side surfaces of the mounting column are flat surfaces.

Preferably, the upper portion of the mounting post is tapered.

Preferably, the common terminal and the output terminal respectively comprise an end head part and two clamping pieces symmetrically extending out of the clamping plug-in units from two sides of the bottom of the end head part, the tail ends of the clamping pieces are bent, and the outer turning angles of the bending of the clamping pieces are inwards.

Preferably, the holding piece is formed by bending and extending from the end of the tip.

The invention has the following remarkable effects:

the micro switch has reasonable structural design, the elastic sheet is stably arranged on the base, and the elastic sheet is driven by the driving of the pressing mechanism to press so as to realize the connection or disconnection of signals, so that the working performance of the switch is very stable and reliable, the process is simplified, the production cost is reduced, the service life of the switch is longer, and the market competitiveness of enterprises is greatly improved.

Drawings

FIG. 1 is a schematic diagram of an exploded view of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the first latch and spring in the upper case;

FIG. 3 is a schematic view of the mounting structure of the base, spring, common terminal and normally open terminal of the first embodiment;

FIG. 4 is a schematic structural view of the first press latch, the spring and the normally open terminal in an initial state;

FIG. 5 is a schematic view of the structure of the first pressing latch, the spring and the normally open terminal in the pressed closed state;

FIG. 6 is a schematic diagram of a split structure according to an embodiment of the present invention;

FIG. 7 is a schematic view of the internal structure of the second latch and spring in the upper housing;

FIG. 8 is a schematic diagram of the mounting structure of the second base, spring, common terminal and normally closed terminal of the embodiment;

fig. 9 is a schematic structural view of the second embodiment when the catch, the spring and the normally-closed terminal are in an initial state;

fig. 10 is a schematic view of the structure of the second embodiment when the latch, the spring and the normally-closed terminal are in a pressed-off state.

Description of the drawings:

1, the upper shell 3 of the boss 2 of the mounting column 11 presses the flat surface 312 of the driving part 311 of the sincere 31, the second 32 annular groove 321 conical protrusion 4, the spring 50, the second 501 end head 502 clamping piece 51, the normally open terminal 52, the normally closed terminal 53, the spring 6, the spring 61, the clamping part 611, the notch 612, the buckling hole 62, the first 622 elastic part, the first 7 sealing ring convex ring 71 and the 711 conical concave part.

Detailed Description

The present invention will be described in further detail below with reference to the drawings and examples for the understanding of those skilled in the art.

Embodiment one: as shown in fig. 1-5, a novel micro switch comprises a base 1, an upper shell 2, a pressing mechanism 3 and a spring 4, wherein the base 1 and the upper shell 2 are buckled and connected together, a common terminal 51 and an output terminal are arranged on the base 1, the output terminal is a normally open terminal 52, and the lower parts of the common terminal 51 and the normally open terminal 52 extend out of the base 1; the pressing mechanism 3 is arranged on the upper shell 2, the upper part of the pressing mechanism 3 extends out of the upper shell, and the pressing mechanism 3 can slide up and down relative to the base 1; the spring 4 is arranged in the base 1 and is positioned under the pressing die 3, the upper part of the spring 4 stretches into the bottom in the pressing die 3, the base 1 is provided with the mounting column 11, the lower part of the spring 4 is sleeved on the spring 4, so as to avoid a clamping line, namely, avoid a die parting line, avoid a batch peak, and the two symmetrical side surfaces of any group of the mounting column 11 are flat surfaces, so that the upper part of the mounting column 11 is conical for convenient guiding.

The micro switch of the embodiment further comprises a spring plate 6 arranged on the base 1, wherein the spring plate 6 comprises a clamping part 61 positioned at the upper part and an elastic part 62 positioned at the middle lower part of one side of the spring plate 6, an outward protruding part I621 is arranged on the elastic part 62, a contact I622 is arranged at the lower end of the elastic part 62, and a contact II 50 corresponding to the contact I622 in position is arranged on the normally open terminal 52; the pressing part 3 is provided with a driving part 31, the contact surface of the driving part 31 and the first protruding part 621 is a flat surface 311, and the driving part 31 is used for driving the first protruding part 621 to press the first contact 622 to contact the second contact 50.

In this embodiment, the elastic portion 62 extends downward from the clamping portion 61 toward the side, so that the driving portion 31 is more labor-saving, easier and smoother when the elastic portion 62 is driven by being pushed down.

In this embodiment, a notch 611 is formed on one side of the clamping portion 61 of the elastic sheet 6, and the clamping portion 61 is connected with the base 1 in a clamping manner through the notch 611, so that the connection is stable; a fastening hole 612 is formed on the other side of the clip portion 61 of the elastic sheet 6, a boss 12 matching with the fastening hole 612 is formed on the base 1 at a position corresponding to the fastening hole 612, the boss 12 is inclined, and inclined surfaces for guiding are respectively formed at the upper end and the lower end of the boss 12; the clamping part 61 is also connected with the base 1 through soldering tin, so that the elastic sheet 6 is stably installed on the base 1 through three-direction positioning in the X axis, the Y axis and the Z axis, the working stability and the reliability are improved, and the service life of a product is prolonged.

In this embodiment, the common terminal and the normally open terminal 52 respectively include an end head 501 and two clamping pieces 502 symmetrically extending from two sides of the bottom of the end head 501 to form a clamping insert, the tail ends of the clamping pieces 502 are bent, and the outer corners of the bending of the clamping pieces 502 are inward, so that the insert can be directly inserted into the clamping pieces 502, the connection is very convenient, the connection is stable, the contact is reliable, the process is simplified, and the production efficiency is higher. Here, the clip 502 is formed by bending and extending from the end of the tip 52.

In this embodiment, the sealing ring 7 is sleeved on the pressing portion 3, the annular groove 32 is arranged at the upper portion of the pressing portion 3, the conical protruding portion 321 is arranged in the annular groove 32, the protruding ring 71 is arranged on the inner side of the upper portion of the sealing ring 7, the conical recessed portion 711 is arranged on the inner side of the protruding ring 71, the conical protruding portion 321 is clamped into the conical recessed portion 711, the protruding ring 71 is in interference fit with the annular groove 32, and the sealing ring 7 improves the waterproof and dustproof effects of the switch.

The inner side wall of the second annular groove 161 is provided with a protruding part 162, the side surface of the protruding ring 191 is provided with a recessed part 192, the protruding ring 191 of the sealing ring 19 is embedded into the second annular groove 161 of the pressing part 16, and meanwhile, the protruding part 162 of the pressing part 16 is also embedded into the recessed part 192 of the sealing ring 19, so that the waterproof and dustproof effects are greatly improved.

When the micro switch of the embodiment works, the pressing part 3 is pressed, the spring 4 is compressed downwards by the pressing part 3, the driving part 31 is driven to press the protruding part one 621 of the elastic part 62 of the elastic sheet 6 in the descending process by the pressing part 3, and the contact one 622 is contacted with the contact two 50 when the protruding part one 621 is pressed inwards, so that the signal is conducted, and the operation is stable and reliable.

Embodiment two: as shown in fig. 6 to 10, the micro switch structure disclosed in this embodiment is similar to that in the first embodiment, except that the output terminal is a normally closed terminal 53.

In this embodiment, the contact surface between the driving part 31 and the first protrusion 621 is provided with the second protrusion 312 facing the inner side, and in the initial state, the second protrusion 312 presses the first protrusion 621, the second protrusion 312 makes an arc transition when contacting the first protrusion 621, and the first contact 622 is in a conductive state when the first protrusion 621 is pressed; when the micro switch works, the pressing part 3 is pressed, the spring 4 is compressed downwards by the pressing part 3, the second protruding part 312 of the driving part 31 is separated from the first protruding part 621 in the descending process of the pressing part 3, and the first contact 622 is separated from the second contact 50, so that signals are disconnected, and the work is stable and reliable. Compared with the structure in the first embodiment, the structure of the embodiment also has the advantages of stable and reliable work, simplified process, low cost and long service life.

The above embodiments are preferred embodiments of the present invention, not intended to be limiting and exhaustive, and the invention can be modified in other ways within the same spirit. It should be noted that any obvious substitution is within the scope of the present invention without departing from the inventive concept.

Claims

1. The utility model provides a novel micro-gap switch, includes base (1), upper housing (2) of being connected with the base, presses sincere (3) and spring (4), installs common terminal (51) and output terminal on the base, output terminal is normally open terminal (52) or normally closed terminal (53), and the lower part of each terminal stretches out in the base, press sincere to install on the upper housing, press sincere relative base to slide from top to bottom, the spring is located in the base according to sincere under, is equipped with on the base and is used for erection column (11) of spring suit, its characterized in that: the power supply circuit also comprises a spring piece (6) arranged on the base, wherein the spring piece comprises a clamping part (61) positioned at the upper part and an elastic part (62) positioned at the middle lower part of one side of the spring piece, the elastic part is provided with a first outwards protruding part (621), the lower end of the elastic part is provided with a first contact (622), and the output terminal is provided with a second contact (50) corresponding to the first contact; the pressing mechanism is provided with a driving part (31) for driving the first inner pressure of the protruding part to enable the first contact to be contacted with the second contact, and the first contact is connected with or disconnected from the second contact when the first contact is contacted with the second contact, so that a connection or disconnection signal is generated;

the elastic part is formed by extending downwards from the clamping part near the side edge;

a notch (611) is arranged on one side of the clamping part of the elastic sheet, and the clamping part is connected with the base in a clamping way through the notch;

the other side of the clamping part of the elastic sheet is provided with a buckling hole (612), and a boss (12) matched with the buckling hole is arranged at the corresponding position of the buckling hole on the base.

2. The novel microswitch of claim 1 wherein: the contact surface of the driving part and the first protruding part is a flat surface (311).

3. The novel microswitch of claim 1 wherein: the contact surface of the driving part and the first bulge is provided with a second bulge (312) facing inwards.

4. The novel microswitch of claim 1 wherein: any two symmetrical side surfaces of the mounting column are flat surfaces.

5. The novel microswitch of claim 1 wherein: the upper part of the mounting column is conical.

6. The novel microswitch of claim 1 wherein: the common terminal and the output terminal respectively comprise an end head part (501) and two clamping pieces (502) symmetrically extending out of the clamping plug-in from two sides of the bottom of the end head part, the tail ends of the clamping pieces are bent, and the outer turning angles of the bending of the clamping pieces are inwards.

7. The novel microswitch of claim 6 wherein: the clamping piece is formed by bending and extending from the tail end of the end head.