CN210349638U

CN210349638U - Micro-gap switch of stable in structure

Info

Publication number: CN210349638U
Application number: CN201921714081.6U
Authority: CN
Inventors: 陈红
Original assignee: Huizhou Hongbao Electrical Appliance Co ltd
Current assignee: Huizhou Hongbao Electrical Appliance Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-04-17
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a micro-gap switch with stable structure, including casing (1), fixed terminal (2), elastic terminal (3) and button (4), fixed terminal (2) and elastic terminal (3) are all installed in casing (1), button (4) stretches out to the casing (1) outside from casing (1) inboard to drive elastic terminal (3) and fixed terminal (2) electrical contact or separation; elastic terminal (3) are including stiff end (31), elasticity connecting portion (32) and electrical property link (33), stiff end (31) are fixed on casing (1) and are stretched out outside casing (1), electrical property link (33) are through spring (5) elasticity butt in casing (1), elasticity connecting portion (32) are connected between stiff end (31) and electrical property link (33), button (4) and electrical property link (33) looks butt. The utility model is used for make micro-gap switch more reliable durable.

Description

Micro-gap switch of stable in structure

Technical Field

The utility model relates to a circuit switch technical field, concretely relates to stable in structure's micro-gap switch.

Background

The circuit switch is an electrical element for controlling the on-off of the circuit, and the functions of the circuit can be realized only by arranging a switch in a common circuit, such as a lighting switch in a household circuit, a keyboard switch on a computer, a switch for controlling the on-off of an electrical appliance on electrical equipment and the like. The microswitch is a circuit switch which is a commonly used switch in an electric appliance structure, one of two terminals of the common microswitch is elastically arranged through a spring, and the movable terminal is pressed to be communicated or separated with a fixed terminal through a press button, so that the on-off of a circuit is realized. Some microswitches are frequently used, and repeated use easily causes the spring in the microswitches to generate unrecoverable deformation, so that the use stability and the service life of the microswitches are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to not enough in the background art, provide a micro-gap switch that can solve.

In order to solve the technical problem, the technical scheme of the utility model is that: a microswitch with a stable structure comprises a shell, a fixed terminal, an elastic terminal and a button, wherein the fixed terminal and the elastic terminal are both arranged in the shell, and the button extends out of the shell from the inner side of the shell and drives the elastic terminal to be electrically contacted with or separated from the fixed terminal; the elastic terminal comprises a fixed end, an elastic connecting portion and an electrical connecting end, the fixed end is fixed on the shell and extends out of the shell, the electrical connecting end is in the shell through elastic butt of a spring, the elastic connecting portion is connected between the fixed end and the electrical connecting end, and the button is in butt joint with the electrical connecting end.

Furthermore, the elastic connecting portion is of a spring plate structure, and the fixed end and the electric connecting end are both provided with reinforcing structures.

Further, the stiff end is the bilayer structure of punching press formation, electric connection end one side has the strengthening rib of bending type.

Further, the spring is a compression spring, and the spring and the fixed terminal are arranged on the same side or different sides of the electric connection end.

Further, the shell comprises a front shell and a rear shell, and the front shell and the rear shell are clamped and fixed together; the fixed terminal and the elastic terminal are clamped and fixed between the front shell and the rear shell.

Furthermore, metal contact pieces are arranged on the electric connection end and the fixed terminal, the metal contact pieces are of arc surface structures, and the electric connection end and the metal contact pieces on the fixed terminal are arranged oppositely.

The utility model discloses the beneficial effect who realizes mainly has following several: the elastic terminal of the microswitch is provided with a structure comprising a fixed end, an elastic connecting part and an electrical connecting end, and the elastic connecting part is connected between the fixed end and the electrical connecting end so that the elastic terminal has elasticity; and electrical property link is still through spring elasticity butt in the casing, and the elastic action of elastic terminal and spring makes elastic terminal have stronger elasticity, and elastic terminal and spring all can produce deformation when pressing the button for elastic terminal is difficult for taking place unrecoverable deformation, thereby more reliable, life is longer when making micro-gap switch use.

Drawings

Fig. 1 is a schematic view of an overall structure of a first, second or third micro switch according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a micro switch according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of the micro switch according to the first embodiment of the present invention, wherein the fixed terminal, the elastic terminal, the button, the spring and the metal contact piece are engaged with each other;

fig. 4 is a schematic structural view of an elastic terminal of a first, second or third micro-switch according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a fixed terminal of a micro switch according to one or two embodiments of the present invention;

fig. 6 is an exploded schematic view of a micro switch according to a second embodiment of the present invention;

fig. 7 is a schematic structural view showing the fitting of the fixed terminal, the elastic terminal, the button, the spring and the metal contact of the micro-switch according to the second embodiment of the present invention;

fig. 8 is an exploded schematic view of a microswitch in the third embodiment of the present invention;

fig. 9 is a schematic structural view of the micro switch according to the third embodiment of the present invention, wherein the fixed terminal, the elastic terminal, the button, the spring and the metal contact piece are engaged with each other;

fig. 10 is a schematic structural view of a fixing terminal of a micro-gap switch according to a third embodiment of the present invention.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

Referring to fig. 1-5, a microswitch with a stable structure, which is more stable and has a longer service life by improving the internal structure of the switch. The microswitch comprises a shell 1, a fixed terminal 2, an elastic terminal 3 and a button 4, wherein the shell 1 and the button 4 are generally in a plastic shell structure formed by injection molding; the fixed terminal 2 and the elastic terminal 3 are generally formed by press molding. The fixed terminal 2 and the elastic terminal 3 are both arranged in the shell 1 and extend out of the shell 1; specifically, the fixed terminal 2 and the elastic terminal 3 may be integrally injection-molded in the housing 1 when the housing 1 is injection-molded, or the fixed terminal 2 and the elastic terminal 3 may be fixed to the housing 1 by means of screwing or the like. The button 4 activity sets up on casing 1, stretches out the casing 1 outside from casing 1 inboard, can drive elastic terminal 3 and fixed terminal 2 electrical contact or separation through pressing button 4, and micro-gap switch is closed when elastic terminal 3 and fixed terminal 2 electrical contact, and micro-gap switch is disconnected when elastic terminal 3 and fixed terminal 2 electrical separation.

Referring to fig. 3 and 4, the elastic terminal 3 is a deformable structure that is deformed to contact with or separate from the fixed terminal 2. The elastic terminal 3 comprises a fixed end 31, an elastic connecting part 32 and an electrical connecting end 33, wherein the fixed end 31 is used for being mounted with the shell 1 and extends out of the shell 1 to be connected with an external circuit; the electrical connection end 33 is used for contacting with the fixed terminal 2 and is abutted with the button 4, and the electrical connection end 33 is elastically abutted in the shell 1 through the spring 5; the elastic connecting portion 32 is connected between the fixed end 31 and the electrical connecting end 33, and the elastic connecting portion 32 may be a spring, a leaf spring, or the like. The elastic terminal 3 is provided with a structure comprising a fixed end 31, an elastic connecting portion 32 and an electrical connecting end 33, and the elastic connecting portion 32 is connected between the fixed end 31 and the electrical connecting end 33, so that the elastic terminal 3 has elasticity; and electric connection end 33 still passes through spring 5 elasticity butt in casing 1, and the elastic action of elastic terminal 3 and spring makes elastic terminal have stronger elasticity, and elastic terminal 3 and spring all can produce deformation when pressing the button for elastic terminal 3 is difficult for taking place the deformation that can't resume, thereby is more reliable, life is longer when making micro-gap switch use.

Referring to fig. 3 and 4, as a further preferred scheme, the elastic connection portion 32 preferably adopts a spring plate structure, so that the fixed end 31 of the elastic terminal 3, the elastic connection portion 32 and the electrical connection end 33 can be integrally formed by stamping, thereby facilitating the production and assembly of the micro switch. All be provided with additional strengthening on stiff end 31 and the electrical connection end 33, guarantee that the elastic terminal is fixed on casing 1 and have sufficient intensity when being pressed by the button, reliability and extension micro-gap switch's life when further guaranteeing the micro-gap switch to use. Stiff end 31 adopts bilayer structure to strengthen when stamping forming with both sides to middle punching press bilayer structure for stiff end 31 has sufficient intensity. The electrical connection end 33 is reinforced by reinforcing ribs, one side of the electrical connection end is provided with a reinforcing rib 331 formed by bending, and two sides of the electrical connection end 33 can be punched to one side to form the reinforcing rib. Adopt bilayer structure to strengthen stiff end 31, adopt strengthening rib 331 to strengthen electrical connection end 33, two kinds of additional strengthening all can adopt the mode preparation of punching press, do not need other technology or equipment, have guaranteed the convenience of micro-gap switch production.

Referring to fig. 2 and 3, the micro switch in the present embodiment is configured as a normally closed switch, and the fixed terminal is in electrical contact with the elastic terminal in a natural state and is in a closed state; when the button 4 is pressed, the fixed terminal and the elastic terminal are electrically separated, and the micro switch is switched off. Specifically, the following structure may be adopted: the spring 5 is a compression spring, is in a compressed state when not subjected to external force, and abuts between the shell 1 and the electrical connection end 33; the spring 5 and the fixed terminal 2 are arranged on two different sides of the electric connection end 33, and the button 4 and the fixed terminal are arranged on the same side, so that when the button 4 is not acted by external force, the electric connection end 33 is abutted against the fixed terminal 2 under the action of elastic force generated by spring compression, and the microswitch is continuously closed; when the button 4 is pressed, the spring 5 is further compressed, so that the electric connection end 33 is separated from the fixed terminal 2, and the micro switch is switched off; when the button 4 is released, the electrical connection terminal 33 returns to the closed state with the fixed terminal 2, and the micro switch is closed again.

Referring to fig. 2, in order to facilitate the installation of the micro switch, the housing 1 is provided as a two-part structure of a front housing 11 and a rear housing 12, and the front housing 11 and the rear housing 12 are fixed together by a snap fit provided therebetween. The fixed terminal 2 is provided with a clamping groove 21, the fixed end 31 is provided with a clamping groove 311, the front shell 11 and the rear shell 12 are provided with clamping blocks corresponding to the clamping grooves, and the fixed terminal 2 and the elastic terminal 3 are clamped and fixed between the front shell 11 and the rear shell 12 through the matching of the clamping grooves and the clamping blocks. When mounting, the fixed terminal 2 and the elastic terminal 3 are mounted on the front case 11 or the rear case 12, then the front case 11 is engaged with the rear case 12, and the fixed terminal 2 and the elastic terminal 3 are clamped between the front case 11 and the rear case 12 while the front case 11 is engaged with the rear case 12. The front shell 11 and the rear shell 12, the fixed terminal, the elastic terminal and the shell are fixed by adopting the structure, so that the micro switch is more convenient to assemble, and the labor cost in assembling can be saved.

Referring to fig. 2 and 3, the electrical connection end 33 and the fixed terminal 2 are both provided with the metal contact 6, and openings may be formed in the electrical connection end 33 and the fixed terminal 2 to rivet the metal contact 6 in the openings. The top surface of metal contact 6 is cambered surface structure or spherical surface structure's protruding structure, and electrical connection end 33 sets up with metal contact 6 on the fixed terminal 2 relatively to when making

electrical connection end

33 and 2 electrical contact of fixed terminal, metal contact 6 on the two contact can, can make the micro-gap switch during operation more sensitive from this, also avoided contact failure's emergence, stability when guaranteeing the micro-gap switch use.

Example two

Referring to fig. 6 and 7, the structure of the micro switch in this embodiment is the same as that in the first embodiment as a whole, except that the micro switch in this embodiment is a normally open switch, the fixed terminal and the elastic terminal are electrically separated in a natural state, and the micro switch is in an off state; when the button 4 is pressed, the fixed terminal is electrically contacted with the elastic terminal, and the micro switch is closed. Specifically, the following structure may be adopted: the spring 5 is a compression spring, is in a compressed state when not subjected to external force, and abuts between the shell 1 and the electrical connection end 33; the spring 5 and the fixed terminal 2 are arranged on the same side of the electric connection end 33, and the button 4 and the fixed terminal are arranged on different sides, so that when the button 4 is not acted by external force, the electric connection end 33 is separated from the fixed terminal 2 under the action of elastic force generated by spring compression, and the microswitch is continuously disconnected; when the button 4 is pressed, the spring 5 is further compressed, so that the electric connecting end 33 is contacted with the fixed terminal 2, and the microswitch is closed; when the button 4 is released, the electrical connection terminal 33 is restored to the state of being separated from the fixed terminal 2, and the micro switch is turned off again.

EXAMPLE III

Referring to fig. 8 to 10, the microswitch in the present embodiment is the same as that in the first embodiment as a whole, and is also a normally closed microswitch, and the whole structure and the working process are the same as those in the first embodiment, except for the structure and the position of the fixed terminal 2. The same parts are not described in detail, and the following description is made for the differences:

referring to fig. 8 to 10, in the first embodiment, the fixed terminal 2 is a three-dimensional L-shaped structure, the mounting surface for mounting the metal contact 6, the mounting surface fixed to the housing 1, and the portion connecting the two mounting surfaces are not on the same plane, and can be formed by multiple punching; in this embodiment, the fixed terminal 2 is a simple L-shaped structure, and the punching and bending process can be performed once to form the mounting surface of the metal contact piece 6, and the punching process can be performed once. The fixed terminal 2 of the first embodiment is installed at the position of the electrical connection end 33 close to the elastic connection portion 32, and the fixed terminal 2 of the first embodiment is installed at the end of the electrical connection end 33. Therefore, the production cost of the microswitch can be reduced by simplifying the process of fixing the terminal and reducing the material use of the elastic terminal.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A micro-gap switch with stable structure is characterized in that: the novel multifunctional electric connector comprises a shell (1), a fixed terminal (2), an elastic terminal (3) and a button (4), wherein the fixed terminal (2) and the elastic terminal (3) are both arranged in the shell (1), the button (4) extends out of the shell (1) from the inner side of the shell (1), and the elastic terminal (3) is driven to be electrically contacted with or separated from the fixed terminal (2); elastic terminal (3) are including stiff end (31), elasticity connecting portion (32) and electrical property link (33), stiff end (31) are fixed on casing (1) and are stretched out outside casing (1), electrical property link (33) are through spring (5) elasticity butt in casing (1), elasticity connecting portion (32) are connected between stiff end (31) and electrical property link (33), button (4) and electrical property link (33) looks butt.

2. The structurally stable microswitch of claim 1, wherein: the elastic connecting part (32) is of a spring plate structure, and the fixed end (31) and the electric connecting end (33) are both provided with reinforcing structures.

3. The structurally stable microswitch of claim 2, wherein: the fixed end (31) is of a double-layer structure formed by stamping, and one side of the electric connection end (33) is provided with a reinforcing rib (331) formed by bending.

4. A micro-switch with stable structure according to any one of claims 1 to 3, characterized in that: the spring (5) is a pressure spring, and the spring (5) and the fixed terminal (2) are arranged on the same side or different sides of the electric connection end (33).

5. The configurationally stable microswitch of claim 4, wherein: the shell (1) comprises a front shell (11) and a rear shell (12), and the front shell (11) and the rear shell (12) are clamped and fixed together; the fixed terminal (2) and the elastic terminal (3) are clamped and fixed between the front shell (11) and the rear shell (12).

6. The configurationally stable microswitch of claim 5, wherein: all be provided with metal contact (6) on electrical connection end (33) and fixed terminal (2), metal contact (6) are cambered surface structure, and electrical connection end (33) and fixed terminal (2) on metal contact (6) relative setting.