Type of one-piece microswitch with built-in resistor(s)

Abstract

A type of one-piece microswitch with built-in resistor(s) having a switch casing, a button on the switch casing, with a pedestal located in the casing, a common terminal, a first terminal and a second terminal installed for connection to external circuits with the common terminal electrically connected to the first contact, the first and the second terminals electrically connected to the second contact respectively. The common terminal is connected to the first and/or second terminal via one or more resistors with a switching device used for switchover of connection or disconnection between the first and the second contacts. The button and pedestal are connected by a spring piece or spring. The switching device is installed on the button, which constitutes a linkage with the button.

Claims

1. A type of one-piece microswitch with built-in resistor(s), comprising a switch casing, a button installed on the switch casing, with a pedestal installed in the switch casing, the common, first and second terminals located on the pedestal to electrically connect with external circuits, a first contact electrically connected to the common terminal, a second contact electrically connected to the first terminal and the second terminal respectively. It has following characteristics: the common terminal is connected to the first and/or second terminal via one or more resistors with a switching device used for switchover of connection or disconnection between the first and the second contacts; the button and pedestal are connected by a spring piece or spring; the switching device is installed on the button, which constitutes a linkage with the button.

2. The one-piece microswitch with built-in resistor(s) as said in claim 1, is characterized in that one or more resistors is, or are installed between the first and second terminals.

3. The one-piece microswitch with built-in resistor(s) as said in claim 1, wherein, the said switching device is a slider.

4. The one-piece microswitch with built-in resistor(s) according to claim 1, wherein, the said resistor is a chip or plug-in resistor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a structure diagram of the one-piece microswitch with built-in resistor(s).

[0013] FIG. 2 is an electric schematic diagram of the one-piece microswitch with built-in resistor(s).

DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment and figures will be illustrated to further elaborate the utility model. But the embodiments of the utility model are not limited to this.

Embodiment 1

[0015] As shown in FIG. 1 and FIG. 2, this embodiment provides a type of one-piece microswitch with built-in resistor(s) comprising a switch casing (1), a button (2) installed on the switch casing (1), with a pedestal (3) installed in the switch casing (1), three terminals installed on the pedestal (3) used to connect to the external circuits, namely, a common terminal (4), a first terminal (5) and a second terminal (6), a first contact (7) electrically connected to the common terminal (4), a second contact (8) electrically connected to the first terminal (5) and the second terminal (6) separately. The said common terminal (4) is connected to the first terminal (5)and/or second terminal (6) via one or more resistors (9) with a switching device (10) used for switchover of connection or disconnection between the first contact (7)and the second contact (8); the said button (2) and pedestal (3) are connected by a spring piece or spring (11); the said switching device (10) is installed on the button (2), which constitutes a linkage with the button (2). In the above structure, the switching device and the button constitute a linkage, while the first contact is always electrically connected to the common terminal and the second contact is electrically connected or disconnected to the first terminal and/or the second terminal through the linkage with the button to meet practical circuit control requirements.

[0016] Alternatively, one resistor or more resistors are installed between a first terminal (5) and a second terminal (6). In a specific application, if resistors of other types are needed for the signal control, it can be realized by changing the shapes of a first terminal (5) and a second terminal (6) or the way these terminals are connected and increasing or decreasing the resistance to satisfy the control function requirement and the performance requirement.

[0017] In this embodiment, switching device (10) is a slider. During the linkage process with the button, it can realize the connection or disconnection between the first contact (7) and the second contact (8) via a slider.

[0018] In order to make an easy installation and meet the practical needs, the resistor (9) is a chip resistor or a plug-in resistor.

[0019] It should be noted that the resistor(s) in this utility model is/are specifically arranged in the microswitch according to the specific circuit control or signal control and the slider contact of the microswitch can make the first contact (7) and the second contact (8) connected with a slider or snap. By improving the traditional structure of the available button to combine the control circuit and the mechanical switch and installing resistors needing type conversions directly in the switch casing of the microswitch, identical function can be realized with the prior circuit board omitted, which greatly saves space and cost, making the microswitch easier to use and satisfying the requirements of microswitch for micromation, high density, modularization and light weight.

[0020] The embodiment above is a preferred embodiment of the utility model. Yet the embodiment of the utility mode is not restricted by the given embodiment. Any other alternations, modifications, replacements, combinations and simplifications made without deviations from the spiritual essence and principle of the utility model can be equivalent replacements and are covered in the scope of protection for the utility model.