CN218939474U

CN218939474U - Micro-switch

Info

Publication number: CN218939474U
Application number: CN202123161188.2U
Authority: CN
Inventors: 陆泳康; 李边江
Original assignee: Individual
Current assignee: Microcontrol Internet Of Things Technology Guangdong Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2023-04-28
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a micro-switch, which comprises: the base is provided with a COM terminal; the COM terminal has a clamping portion and a first connecting portion. The clamping part is arranged above the base; the lower end of the first connecting part penetrates out of the bottom of the base. The NO terminal is provided with a first bending part and a second connecting part; the first bending part is arranged above the base; the lower end of the second connecting part penetrates out of the bottom of the base. The NC terminal has a second bending part and a third connecting part. The second bending part is arranged above the first bending part; the lower end of the third connecting part penetrates out of the bottom of the base. The connecting terminal is connected to the bottom of the base below the second bending part. One end of the switching piece is connected with the clamping part, and the other end of the switching piece is arranged between the first bending part and the second bending part. A plurality of resistors are connected between the first connecting part and the third connecting part. The utility model solves the technical problems of insufficient universality, low resistance utilization rate and the like in the prior art.

Description

Micro-switch

Technical Field

The utility model relates to the technical field of micro switches, in particular to a micro switch with good universality.

Background

The micro-switch is widely applied to control equipment in various industries such as machinery, electronics, medical treatment and the like. As can be seen from market research information, in addition to the military fields of aerospace, weaponry, electronic communication equipment and the like which are concentrated in high technology, the micro-switch product has higher requirements in various civil electrical fields. The micro-switch product is not limited to a single group of switch functions, and the market has higher requirements on miniaturization, high density, modularization, light weight and the like. At present, research and development of series products of micro switches are in scattered and unordered states in China, and the performance of the products is low. Based on this, chinese patent CN105118710a discloses an integrated micro-switch with built-in resistor, which comprises a switch housing and a button arranged on the switch housing, wherein a base is arranged in the switch housing, a common terminal, a first terminal and a second terminal are mounted on the base and used for being connected with an external circuit, the common terminal is electrically connected with a first contact, the first terminal and the second terminal are respectively electrically connected with a second contact, the common terminal is connected with the first terminal and/or the second terminal through one or more resistors, a switch device for switching on or off the first contact and the second contact is arranged between the first contact and the second contact, the button is connected with the base through a spring piece or a spring, and the switch device is mounted on the button and the button forms linkage.

However, the integrated micro-switch with built-in resistor has the defects of insufficient versatility, difficult assembly of resistor, easy failure of floating switch device and low utilization rate of resistor. Specifically, the resistor of the micro switch must be pre-installed inside the housing, and the housing and the terminal of the micro switch are mostly manufactured by an integrated process; therefore, if the user needs to replace the resistor of a different size, the molding die of the case must be re-opened, resulting in insufficient versatility. In addition, the connection between the resistor and the terminal usually requires a welding process, and the resistor provided in the micro switch is installed inside the housing, so that the manufacturing process of workers is affected. Furthermore, the switch device of the micro switch is a sliding sheet, and specifically, the sliding sheet realizes the connection or disconnection of the sliding sheet and the first contact or the second contact along with the linkage process of the button arranged on the sliding sheet. Since the sliding process has no locking structure, the sliding process is easily displaced due to vibration, so that the switch is not in a preset position, and the switching function of the sliding process is disabled. Furthermore, as can be seen from the schematic circuit diagram of the micro-switch, under the condition that three terminals are connected into a circuit, the micro-switch can only select one of the preset two resistors and cannot be used at the same time, so that the utilization rate of the built-in resistor is limited.

Disclosure of Invention

Based on the above, it is necessary to provide a micro switch and a manufacturing method thereof, which are required to solve the technical problems of insufficient versatility, difficult assembly of the micro switch, easy failure of the sliding switch device and low resistance utilization rate in the prior art.

A micro-switch, comprising: base, COM terminal, NO terminal, NC terminal, connection terminal, switch sheet, and several resistors. The base is provided with the COM terminal; the COM terminal is provided with a clamping part and a first connecting part. The clamping part is arranged above the base; the first connecting part is connected with the clamping part, and the lower end of the first connecting part penetrates out of the bottom of the base. The NO terminal is arranged adjacent to the COM terminal and is arranged on the base; the NO terminal is provided with a first bending part and a second connecting part; the first bending part is arranged above the base; the second connecting part is connected with the first bending part, and the lower end of the second connecting part penetrates out of the bottom of the base. The NC terminal is arranged at the other side of the NO terminal relative to the COM terminal and is connected with the base; the NC terminal has a second bending part and a third connecting part. The second bending part is arranged above the first bending part; the third connecting part is connected with the second bending part, and the lower end of the third connecting part penetrates out of the bottom of the base. The connecting terminal is connected to the bottom of the base below the second bending part. One end of the switching piece is connected with the clamping part, and the other end of the switching piece is arranged between the first bending part and the second bending part. A plurality of resistors are connected between the first connecting part and the third connecting part and/or a plurality of resistors are connected between the third connecting part and the connecting terminal.

Further, a switch button is arranged above the base.

Further, a supporting sheet is arranged below the switching sheet; one end of the supporting sheet is connected to the base, and the other end of the supporting sheet is connected to the lower portion of the switch button.

Further, a spring is arranged above the supporting sheet; the springs are respectively connected with the switching piece and the supporting piece.

Further, the first connecting portion has a first welding point;

further, the first welding point is disposed on a side surface of the first connection portion.

Further, a second welding point is arranged on the side face of the third connecting part;

further, a third welding point is arranged on the side face of the connecting terminal.

Further, a plurality of resistors are connected between the first connecting portion and the second connecting portion.

Further, a plurality of resistors are connected between the second connection part and the connection terminal.

Further, a protective housing is arranged above the base.

In summary, according to the utility model, the base, the COM terminal, the NO terminal, the NC terminal, the connecting terminal, the switching piece and the resistors of the micro switch are connected by reasonable structures, so that the technical problems of insufficient universality, difficult assembly resistance, easy failure of the sliding switch device and low resistance utilization rate of the micro switch in the prior art can be solved. The utility model relates to a terminal direct welding resistor micro switch, which is characterized in that a plurality of resistors are respectively connected between a first welding point and a second welding point and/or between a third welding point and a fourth welding point; and further, the technical problems of insufficient universality and difficult resistor assembly caused by the built-in resistor in the prior art are avoided. More specifically, the resistor is externally arranged, so that the degree of freedom of material selection is greater when a user selects the resistance value of the resistor; and, external resistance is more easily welded connection. In addition, the direct welding resistance micro switch of the terminal is also provided with a switch button, a supporting sheet and a spring; the switch piece is connected with the switch button, the supporting piece and the spring, so that the technical problem that a sliding switch device of the micro switch is easy to fail in the prior art is solved. More specifically, the action of the support plate and the spring driving the switch plate is a one-shot one-action, unlike prior art schemes that switch by sliding. Compared with the scheme of sliding switching in the prior art, the scheme of the micro switch has stronger structural stability, and further solves the defect that the scheme switch in the prior art is easy to fail. Further, when the user communicates the clamping portion with the second bending portion through the switching piece, that is, when the COM terminal and the NC terminal are in a conductive state. At this time, a plurality of the resistors connected between the first connection portion and the third connection portion are short-circuited; that is, only a plurality of the resistors connected between the third connection portion and the connection terminal are connected to an external circuit at this time. When the user communicates the clamping portion with the first bending portion through the switching piece, that is, the COM terminal and the NO terminal are in a conductive state. At this time, the resistors connected between the first connection portion and the third connection portion, and the resistors connected between the third connection portion and the connection terminal are connected to an external circuit. Therefore, the micro switch of the present utility model can effectively partially or completely utilize all the resistors previously connected by the user.

Drawings

FIG. 1 is a schematic diagram of a micro switch according to the present utility model;

FIG. 2 is a schematic view of another direction of a micro switch according to the present utility model;

FIG. 3 is a schematic perspective view of an embodiment of a micro switch according to the present utility model;

FIG. 4 is a schematic circuit diagram of a micro-switch according to the embodiment shown in FIG. 3;

FIG. 5 is a schematic perspective view of another embodiment of a micro switch according to the present utility model;

FIG. 6 is a schematic circuit diagram of a micro-switch according to the embodiment shown in FIG. 5;

FIG. 7 is a schematic perspective view of another embodiment of a microswitch according to the present utility model;

FIG. 8 is a schematic circuit diagram of a micro-switch according to the embodiment shown in FIG. 7;

fig. 9 is a schematic view illustrating another direction of a micro switch according to the present utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, a micro switch of the present utility model includes: base 1, COM terminal 2, NO terminal 3, NC terminal 4, connection terminal 5, switch 6, and resistors 7. The base 1 is provided with the COM terminal 2; the COM terminal 2 has a clamping portion 201 and a first connecting portion 202. The clamping part 201 is arranged above the base 1; the first connecting portion 202 is connected to the clamping portion 201, and the lower end of the first connecting portion 202 penetrates out of the bottom of the base 1. The NO terminal 3 is provided adjacent to the COM terminal 2 on the base 1; the NO terminal 3 has a first bending portion 301 and a second connecting portion 302; the first bending portion 301 is disposed above the base 1; the second connecting portion 302 is connected to the first bending portion 301, and a lower end of the second connecting portion 302 penetrates out of the bottom of the base 1. The NC terminal 4 is provided on the other side of the NO terminal 3 with respect to the COM terminal 2 and is connected to the base 1; the NC terminal 4 has a second bent portion 401 and a third connecting portion 402. The second bending portion 401 is disposed above the first bending portion 301; the third connecting portion 402 is connected to the second bending portion 401, and the lower end of the third connecting portion 402 penetrates out of the bottom of the base 1. The connection terminal 5 is connected to the bottom of the base 1 below the second bending portion 401. One end of the switching piece 6 is connected to the clamping portion 201, and the other end of the switching piece 6 is disposed between the first bending portion 301 and the second bending portion 401. A plurality of resistors 7 are connected between the first connection portion 202 and the third connection portion 402 and/or a plurality of resistors 7 are connected between the third connection portion 402 and the connection terminal 5.

In particular, the base 1 may be molded from an insulating material, for example, the base 1 may be plastic, rubber, or other similar insulating material. The COM terminal 2, the NO terminal 3, the NC terminal 4, the connection terminal 5, and the switching sheet 6 are all made of a conductive material, for example, a metal material, preferably a metal material having good conductive properties such as copper, copper alloy, aluminum, or silver. The COM terminal 2, the NO terminal 3, the NC terminal 4, and the connection terminal 5 may be connected to the base 1 by being fastened or integrally formed; further, the COM terminal 2, the NO terminal 3, the NC terminal 4, and the connection terminal 5 are insulated from each other in the base 1; the clamping portion 201 is electrically connected to the first connecting portion 202, the first bending portion 301 is electrically connected to the second connecting portion 302, and the second bending portion 401 is electrically connected to the third connecting portion 402. Further, the first connection portion 202 may be connected to an external circuit through a COM lead 203; the connection terminal 5 may communicate with an external circuit through an NC lead 501. Please continue to refer to fig. 3 and fig. 4; as can be seen in connection with fig. 3 and 4; when the user communicates the engaging portion 201 with the second bending portion 401 via the switching piece 6, that is, when the COM terminal 2 and the NC terminal 4 are in a conductive state. At this time, the plurality of resistors 7 connected between the first connection portion 202 and the third connection portion 402 are short-circuited; that is, only the plurality of resistors 7 connected between the third connection part 402 and the connection terminal 5 are connected to an external circuit. When the user communicates the engaging portion 201 with the first bending portion 301 via the switching piece 6, that is, when the COM terminal 2 and the NO terminal 3 are in a conductive state. At this time, the resistors 7 connected between the first connection part 202 and the third connection part 402, and the resistors 7 connected between the third connection part 402 and the connection terminal 5 are connected to an external circuit. One embodiment is shown in the schematic circuit diagram of fig. 4; in this embodiment, a resistor R1 is connected between the first connection portion 202 and the third connection portion 402; a resistor R2 is connected between the third connection part 402 and the connection terminal 5. More specifically, when the COM terminal 2 and the NC terminal 4 are in a conductive state, the resistor R1 is short-circuited; at this time, only the R2 resistor is connected to an external circuit. When the COM terminal 2 and the NO terminal 3 are in a conductive state, the resistor R1 and the resistor R2 are connected to an external circuit. Still further, please continue to refer to fig. 5 and 6; another embodiment is shown in fig. 5 and 6; in such an embodiment: the NC terminal 4 is provided with a third connecting portion 402 having a hollow lower end, that is, a plurality of resistors 7 are welded below the NO terminal 3 and the COM terminal 2, that is, a plurality of resistors 7 are connected between the second connecting portion 302 and the first connecting portion 202; meanwhile, a plurality of resistors are connected between the second connection portion 302 and the connection terminal 5. Similarly, when the COM terminal 2 and the NO terminal 3 are in the on state, the resistor R1 is short-circuited; at this time, only the R2 resistor is connected to an external circuit. When the COM terminal 2 and the NC terminal 4 are in a conductive state, the resistor R1 and the resistor R2 are connected to an external circuit. Still further, please continue to refer to fig. 7 and 8; yet another embodiment is shown in fig. 7 and 8, in which: the lower end of the third connection part 402 provided in the NC terminal 4 is left empty, and only a plurality of resistors are connected between the second connection part 302 and the connection terminal 5; at this time, when the COM terminal 2 and the NO terminal 3 are in a conductive state, the resistor R is connected to an external circuit; when the COM terminal 2 and the NC terminal 4 are in a conductive state, an external circuit is in an open state. In summary, a plurality of resistors 7 are connected between the first connection portion 202 and the second connection portion 302; a plurality of resistors 7 are connected between the second connection portion 302 and the connection terminal 5. Therefore, the micro switch of the present utility model can effectively partially or completely utilize all the resistors previously connected by the user.

Further, please continue to refer to fig. 9; fig. 9 is a schematic view illustrating another direction of a micro switch according to the present utility model. A switch button 8 is arranged above the base 1. A supporting sheet 9 is arranged below the switching sheet 6; one end of the supporting piece 9 is connected to the base 1, and the other end of the supporting piece 9 is connected to the lower portion of the switch button 8. A spring 10 is arranged above the supporting sheet 9; the springs 10 are connected to the switching pieces 6 and the supporting pieces 9, respectively. Specifically, when one end of the switch plate 6 abuts against the second bending portion 401, if the user presses the switch button 8, the lower end of the switch button 8 drives one end of the support plate 9, and at this time, the support plate 9 will trigger the spring 10 to pull the switch plate 6, so that one end of the switch plate 6 leaves the second bending portion 401 and abuts against the first bending portion 301. Similarly, when one end of the switch plate 6 abuts against the first bending portion 301, if the user presses the switch button 8, the lower end of the switch button 8 drives one end of the support plate 9, and at this time, the support plate 9 triggers the spring 10 to pull the switch plate 6, so that one end of the switch plate 6 leaves the first bending portion 301 and abuts against the second bending portion 401. Therefore, the mutual matching among the switching piece 6, the switch button 8, the supporting piece 9 and the spring 10 can enable a user to conveniently switch different circuit switch combinations; and, the action of driving the switch piece 6 by the support piece 9 and the spring 10 is one-shot action, unlike the prior art scheme of switching by sliding. Compared with the scheme of sliding switching in the prior art, the scheme of the micro switch has stronger structural stability, and further solves the defect that the scheme switch in the prior art is easy to fail.

Further, please refer to fig. 2. The first connection portion 202 has a first welding point 202a; the first welding point 202a is disposed on a side surface of the first connecting portion 202. Similarly, a second welding point 402a is disposed on the side surface of the third connecting portion 402; the side of the connection terminal 5 is provided with a third welding point 502. Specifically, the first welding point 202a, the second welding point 402a and the third welding point 502 are small metal pieces introduced from the large metal surface of the terminal, and the design is favorable for reliable connection when a user welds a resistor, so that the defect that a solder and other connectors are quickly cooled by the large metal surface to cause cold joint or pseudo joint is avoided.

In addition, a protective shell 11 can be arranged above the base 1; the COM terminal 2, the NO terminal 3, the NC terminal 4, the connection terminal 5, the switching piece 6, the support piece 9, and the spring 10 are all provided inside the protective case 11. The protective shell 11 has the function of protecting the internal components from damage.

In summary, the base 1, the COM terminal 2, the NO terminal 3, the NC terminal 4, the connection terminal 5, the switch sheet 6 and the plurality of resistors 7 of the present utility model, which are provided in the terminal direct welding resistor micro switch, can solve the technical problems of insufficient versatility, difficult assembly of the resistor, easy failure of the sliding switch device and low utilization rate of the resistor in the prior art by reasonable structural connection. The utility model relates to a terminal direct welding resistance micro-switch, which is provided with a plurality of resistors 7 respectively connected between a first welding point 202a and a second welding point 402a and/or between the second welding point 402a and a third welding point 502; and further, the technical problems of insufficient universality and difficult assembly of the resistor caused by the built-in resistor 7 in the prior art are avoided. More specifically, the resistor 7 is externally arranged, so that the degree of freedom of material selection is greater when a user selects the resistance value of the resistor; and, the external resistor 7 is easier to be welded. In addition, the direct welding resistance micro switch of the terminal is also provided with a switch button 8, a supporting sheet 9 and a spring 10; the switch sheet 6 is connected with the switch button 8, the support sheet 9 and the spring 10, so that the technical problem that a sliding switch device of a micro switch is easy to fail in the prior art is solved. More specifically, the action of the support 9 and the spring 10 driving the switch 6 is a one-shot one-action, unlike the prior art solutions of switching by sliding. Compared with the scheme of sliding switching in the prior art, the scheme of the micro switch has stronger structural stability, and further solves the defect that the scheme switch in the prior art is easy to fail. Further, when the user communicates the engaging portion 201 with the second bending portion 401 via the switching piece 6, that is, when the COM terminal 2 and the NC terminal 4 are in a conductive state. At this time, the plurality of resistors 7 connected between the first connection portion 202 and the third connection portion 402 are short-circuited; that is, only the plurality of resistors 7 connected between the third connection part 402 and the connection terminal 5 are connected to an external circuit. When the user communicates the engaging portion 201 with the first bending portion 301 via the switching piece 6, that is, when the COM terminal 2 and the NO terminal 3 are in a conductive state. At this time, the resistors 7 connected between the first connection part 202 and the third connection part 402, and the resistors 7 connected between the third connection part 402 and the connection terminal 5 are connected to an external circuit. Therefore, the micro switch of the present utility model can effectively partially or completely utilize all the resistors previously connected by the user.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A micro-switch, characterized in that the micro-switch comprises: a base (1), a COM terminal (2), a NO terminal (3), an NC terminal (4), a connecting terminal (5), a switching piece (6) and a plurality of resistors (7); the base (1) is provided with the COM terminal (2); the COM terminal (2) is provided with a clamping part (201) and a first connecting part (202); the clamping part (201) is arranged above the base (1); the first connecting part (202) is connected with the clamping part (201), and the lower end of the first connecting part (202) penetrates out of the bottom of the base (1); the NO terminal (3) is arranged adjacent to the COM terminal (2) on the base (1); the NO terminal (3) has a first bending part (301) and a second connecting part (302); the first bending part (301) is arranged above the base (1); the second connecting part (302) is connected with the first bending part (301), and the lower end of the second connecting part (302) penetrates out of the bottom of the base (1); the NC terminal (4) is arranged on the other side of the NO terminal (3) relative to the COM terminal (2) and is connected to the base (1); the NC terminal (4) has a second bending part (401) and a third connecting part (402); the second bending part (401) is arranged above the first bending part (301); the third connecting part (402) is connected with the second bending part (401), and the lower end of the third connecting part (402) penetrates out of the bottom of the base (1); the connecting terminal (5) is connected to the bottom of the base (1) below the second bending part (401); one end of the switching piece (6) is connected with the clamping part (201), and the other end of the switching piece (6) is arranged between the first bending part (301) and the second bending part (401); a plurality of resistors (7) are connected between the first connecting part (202) and the third connecting part (402) and/or a plurality of resistors (7) are connected between the third connecting part (402) and the connecting terminal (5).

2. A microswitch as in claim 1 wherein: a switch button (8) is arranged above the base (1).

3. A microswitch as in claim 2 wherein: a supporting sheet (9) is arranged below the switching sheet (6); one end of the supporting sheet (9) is connected to the base (1), and the other end of the supporting sheet (9) is connected to the lower portion of the switch button (8).

4. A microswitch according to claim 3 wherein: a spring (10) is arranged above the supporting sheet (9); the spring (10) is respectively connected with the switching piece (6) and the supporting piece (9).

5. A microswitch as in claim 1 wherein: the first connection part (202) is provided with a first welding point (202 a); the first welding point (202 a) is arranged on the side surface of the first connecting part (202).

6. A microswitch as in claim 5 wherein: the side surface of the third connecting part (402) is provided with a second welding point (402 a).

7. A microswitch as in claim 6 wherein: the side face of the connecting terminal (5) is provided with a third welding point (502).

8. A microswitch as in claim 1 wherein: a plurality of resistors (7) are connected between the first connecting part (202) and the second connecting part (302).

9. A microswitch as in claim 8 wherein: a plurality of resistors (7) are connected between the second connecting part (302) and the connecting terminal (5).

10. A microswitch as in claim 1 wherein: a protective shell (11) is arranged above the base (1).