Switch for electrical control

Abstract

The utility model relates to the technical field of electrical correlation, in particular to a switch for electrical control, which comprises a shell, and a control mechanism is arranged in the shell. According to the electrical control switch, through the arrangement of the control mechanism, when the normally open switch is operated, the first button cap is pressed down firstly, the first button cap drives the first pressure block to move, the first pressure block drives the second moving contact to move, at the moment, the second moving contact and the second static contact are closed, a power supply is connected, and when the first button cap is loosened, the second spring loses acting force and deforms and resets; when the normally-closed switch is operated, the second button cap is pressed down firstly, the second button cap drives the second pressure block to move, the second pressure block drives the first moving contact to be separated from the first static contact, and at the moment, the power supply is switched off. After the second button cap is loosened, the first spring loses acting force to drive the second pressure block to reset, the second pressure block drives the first moving contact to be separated from the first static contact, and the switch returns to the normally-closed state at the moment.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical related fields, in particular to a switch for electrical control. Background Art

[0002] In the 18th and 19th centuries, with the advancement of science and technology, people's understanding of electricity and magnetism gradually deepened. For example, Benjamin Franklin conducted the famous kite experiment, proving that lightning is an electrical phenomenon. At the same time, Oersted discovered the magnetic effect of electric current. Scientists such as Ampere and Faraday also made important contributions. In the late 20th and early 21st centuries, with the rapid development of computer technology and electronic technology, electrical engineering has also undergone major changes. Modern electrical engineering covers a wide range of fields, including power systems, electronics, control systems, communication technology, computer engineering, etc. Based on the needs of industrial production and mechanical equipment control, there is a special need for a switch for electrical control.

[0003] However, the existing electrical control switches are mostly composite control switches, which are generally small and easy to be accidentally touched during daily operation and use. In addition, it is sometimes impossible to determine whether the control is successfully achieved when pressing the control button during use. There may be a risk of electric shock during maintenance or replacement of parts. Utility Model Content

[0004] The purpose of the utility model is to provide an electrical control switch to solve the existing electrical control switches proposed in the above-mentioned background technology. Since most of the electrical control switches in life adopt compound control switches, the compound control switches are generally small and easy to be accidentally touched in daily operation and use. In addition, when pressing the control button during use, it is sometimes impossible to determine whether the control is successful. If maintenance or replacement of parts occurs, there may be a risk of electric shock.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrical control switch, comprising a housing, a control mechanism is arranged inside the housing, and a display mechanism is arranged inside the housing;

[0006] The control mechanism includes a first button cap, a second button cap, a first static contact, a first spring, a second static contact, a second spring, a first piezoelectric crystal, a first pressure block, a second pressure block, a second piezoelectric crystal, a first moving contact, a first pin, a second moving contact and a second pin. The first button cap is installed on one side of the inner surface of the shell, the second button cap is installed on one side of the inner surface of the shell, the first static contact is installed on one side of the inner surface of the shell, the first spring is fixedly connected to one side of the inner surface of the shell, the second static contact is installed on one side of the inner surface of the shell, the second spring is fixedly connected to one side of the inner surface of the shell, the first piezoelectric crystal is installed on one side of the surface of the first button cap, the first pressure block is fixedly connected to one side of the surface of the first button cap, the second pressure block is fixedly connected to one side of the surface of the second button cap, the second piezoelectric crystal is installed on one side of the surface of the second button cap, the first moving contact is installed on one side of the surface of the first static contact, one end of the first static contact is electrically connected to the first pin, the second moving contact is installed on one side of the surface of the second static contact, and one end of the second static contact is electrically connected to the second pin.

[0007] Preferably, the first stationary contact is installed on one side of the surface of the first moving contact, and the second stationary contact is installed on one side of the surface of the second moving contact.

[0008] Preferably, one end of the first spring is fixedly connected to the first pressure block, and one end of the second spring is fixedly connected to the second pressure block.

[0009] Preferably, the display mechanism includes a display screen, a fixing plate, bolts and a temperature sensor, the display screen is installed on one side of the surface of the shell, the fixing plate is installed on one side of the inner surface of the shell, bolts are installed inside the shell, and the temperature sensor is installed on one side of the inner surface of the shell.

[0010] Preferably, the display screen is electrically connected to the temperature sensor, and the bolt passes through the fixing plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the electrical control switch is provided with a control mechanism, and pressing the first button cap can close the second static contact and the second moving contact to connect the power supply. At this time, the tactile feedback of the first piezoelectric crystal is used to confirm that the button is turned on, and releasing the first button cap will reset and disconnect under the action of the second spring, so that the second static contact and the second moving contact return to the disconnected state, and pressing the second button cap can disconnect the first static contact and the first moving contact, and the disconnection is confirmed through the tactile feedback of the second piezoelectric crystal, and releasing the second button cap will reset and close under the action of the first spring, so that the first static contact and the first moving contact return to the closed state, separating the reset switch into separate buttons can reduce the error operation rate, and through the setting of the piezoelectric crystal, the user can get confirmation that the button is pressed or released through tactile feedback, which can reduce the possibility of error operation for some important operations, such as starting the machine, closing the safety door, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the decomposed structure of the control mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the exploded structure of the display mechanism of the utility model;

[0015] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0016] In the figure: 1. shell; 2. control mechanism; 201. first button cap; 202. second button cap; 203. first static contact; 204. first spring; 205. second static contact; 206. second spring; 207. first piezoelectric crystal; 208. first pressure block; 209. second pressure block; 210. second piezoelectric crystal; 211. first moving contact; 212. first pin; 213. second moving contact; 214. second pin; 3. display mechanism; 301. display screen; 302. fixing plate; 303. bolt; 304. temperature sensor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 The utility model provides a technical solution: an electrical control switch, comprising a housing 1, a control mechanism 2 is arranged inside the housing 1, and a display mechanism 3 is arranged inside the housing 1;

[0019] The control mechanism 2 includes a first button cap 201, a second button cap 202, a first static contact 203, a first spring 204, a second static contact 205, a second spring 206, a first piezoelectric crystal 207, a first pressure block 208, a second pressure block 209, a second piezoelectric crystal 210, a first moving contact 211, a first pin 212, a second moving contact 213 and a second pin 214. The first button cap 201 is installed on one side of the inner surface of the shell 1, the second button cap 202 is installed on one side of the inner surface of the shell 1, the first static contact 203 is installed on one side of the inner surface of the shell 1, the first spring 204 is fixedly connected to one side of the inner surface of the shell 1, the second static contact 205 is installed on one side of the inner surface of the shell 1, and the inner surface of the shell 1 is installed on one side. A second spring 206 is fixedly connected, a first piezoelectric crystal 207 is installed on one side of the surface of the first button cap 201, a first pressure block 208 is fixedly connected to one side of the surface of the first button cap 201, a second pressure block 209 is fixedly connected to one side of the surface of the second button cap 202, a second piezoelectric crystal 210 is installed on one side of the surface of the second button cap 202, a first moving contact 211 is installed on one side of the surface of the first static contact 203, one end of the first static contact 203 is electrically connected to the first pin 212, a second moving contact 213 is installed on one side of the surface of the second static contact 205, one end of the second static contact 205 is electrically connected to the second pin 214, through the first button cap 201, the second button cap 202, the first static contact 203, the first spring 204, The second static contact 205, the second spring 206, the first piezoelectric crystal 207, the first pressure block 208, the second pressure block 209, the second piezoelectric crystal 210, the first moving contact 211, the first pin 212, the second moving contact 213 and the second pin 214 are arranged such that when operating the normally open switch, the first button cap 201 is first pressed, the first button cap 201 drives the first pressure block 208 to move, the first pressure block 208 drives the second moving contact 213 to move, and at the same time the second spring 206 is squeezed and deformed by force, at which time the second moving contact 213 is closed with the second static contact 205, the power is turned on, and the confirmation that the button is turned on is obtained through the tactile feedback of the first piezoelectric crystal 207, and when the first button cap 201 is released, the second spring 206 loses its force and is deformed and reset , driving the second moving contact 213 to separate from the second static contact 205, at this time the switch returns to the normally open state, when operating the normally closed switch, first press the second button cap 202, the second button cap 202 drives the second pressure block 209 to move, the second pressure block 209 drives the first moving contact 211 to separate from the first static contact 203, at this time the power is disconnected, and the tactile feedback of the second piezoelectric crystal 210 is used to confirm that the button is disconnected, the first spring 204 is squeezed and deformed by the second pressure block 209, after the second button cap 202 is released, the first spring 204 loses its force and drives the second pressure block 209 to reset, the second pressure block 209 drives the first moving contact 211 to separate from the first static contact 203, at this time the switch returns to the normally closed state, through the setting of the first pin 212,The power supply can be controlled by controlling the normally closed switch, and the power supply can be controlled by controlling the normally open switch through the setting of the second pin 214.

[0020] Furthermore, the first static contact 203 is installed on one side of the surface of the first moving contact 211, and the second static contact 205 is installed on one side of the surface of the second moving contact 213. Through the setting of the first moving contact 211, when the first moving contact 211 is separated from the first static contact 203 by the force of the second pressure block 209, the power supply can be disconnected.

[0021] Furthermore, one end of the first spring 204 is fixedly connected to the first pressure block 208, and one end of the second spring 206 is fixedly connected to the second pressure block 209. Through the setting of the first spring 204, the elastic force provided by the first spring 204 keeps the first moving contact 211 and the first static contact 203 of the normally closed switch in a closed state under normal conditions. When the second button cap 202 is pressed, the second pressure block 209 drives the first spring 204 to be compressed, storing elastic potential energy. When the second button cap 202 is released, the elastic potential energy of the first spring 204 is released and pushes the first moving contact 211 and the first static contact 203 to close, so that the normally closed switch can be automatically reset, ensuring that the circuit remains in a closed state when there is no external operation.

[0022] Furthermore, the display mechanism 3 includes a display screen 301, a fixing plate 302, bolts 303 and a temperature sensor 304. The display screen 301 is installed on one side of the surface of the shell 1, the fixing plate 302 is installed on one side of the inner surface of the shell 1, the bolts 303 are installed inside the shell 1, and the temperature sensor 304 is installed on one side of the inner surface of the shell 1. Through the arrangement of the display screen 301, the fixing plate 302, the bolts 303 and the temperature sensor 304, the temperature inside the electrical switch can be detected by the temperature sensor 304, and the temperature can be displayed on the display screen 301, so that the temperature state inside the switch can be observed. Through the arrangement of the fixing plate 302, the four sides of the temperature sensor 304 are fixed by the fixing plate 302, and the fixing plate 302 is fixed to one side of the surface of the shell 1 by the bolts 303, so that the temperature sensor 304 can be installed inside the shell 1.

[0023] Furthermore, the display screen 301 is electrically connected to the temperature sensor 304, and the bolt 303 passes through the fixing plate 302. Through the setting of the display screen 301, the temperature inside the shell 1 can be detected by the temperature sensor 304 and the temperature is displayed on the display screen 301, so as to observe the temperature inside the shell 1.

[0024] Working principle: When operating a normally open switch, first press the first button cap 201, the first button cap 201 drives the first pressure block 208 to move, the first pressure block 208 drives the second moving contact 213 to move, and at the same time the second spring 206 is squeezed and deformed. At this time, the second moving contact 213 and the second static contact 205 are closed, the power is turned on, and the tactile feedback of the first piezoelectric crystal 207 is used to confirm that the button is turned on. When the first button cap 201 is released, the second spring 206 loses its force and is deformed and reset, driving the second moving contact 213 to separate from the second static contact 205. At this time, the switch returns to the normally open state. When operating a normally closed switch, first press the second button cap 202, the second button cap 202 drives the second pressure block 209 to move, and the second pressure block 209 drives the first moving contact 211 to separate from the first static contact 203. At this time, the power is disconnected, and the tactile feedback of the second piezoelectric crystal 210 is used to confirm that the button is disconnected. 204 is squeezed and deformed by the second pressure block 209. After the second button cap 202 is released, the first spring 204 loses its force and drives the second pressure block 209 to reset. The second pressure block 209 drives the first moving contact 211 to separate from the first static contact 203. At this time, the switch returns to the normally closed state. Through the setting of the first pin 212, the power supply can be controlled by controlling the normally closed switch. Through the setting of the second pin 214, the power supply can be controlled by controlling the normally open switch. The temperature inside the electrical switch can be detected by the temperature sensor 304, and the temperature can be displayed on the display screen 301, so that the temperature state inside the switch can be observed. Through the setting of the fixing plate 302, the four sides of the temperature sensor 304 are fixed by the fixing plate 302, and the fixing plate 302 is fixed to one side of the surface of the shell 1 by bolts 303, so that the temperature sensor 304 can be installed inside the shell 1.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switch for electrical control, comprising a housing (1), characterized in that: A control mechanism (2) is arranged inside the housing (1), and a display mechanism (3) is arranged inside the housing (1); The control mechanism (2) comprises a first button cap (201), a second button cap (202), a first static contact (203), a first spring (204), a second static contact (205), a second spring (206), a first piezoelectric crystal (207), a first pressure block (208), a second pressure block (209), a second piezoelectric crystal (210), a first moving contact (211), a first pin (212), a second moving contact (213) and a second pin (214); the first button cap (201) is mounted on one side of the inner surface of the shell (1); the second button cap (202) is mounted on one side of the inner surface of the shell (1); the first static contact (203) is mounted on one side of the inner surface of the shell (1); the first spring (204) is fixedly connected to one side of the inner surface of the shell (1); and the second spring (204) is mounted on one side of the inner surface of the shell (1). A second static contact (205) is provided, a second spring (206) is fixedly connected to one side of the inner surface of the housing (1), a first piezoelectric crystal (207) is installed on one side of the surface of the first button cap (201), a first pressure block (208) is fixedly connected to one side of the surface of the first button cap (201), a second pressure block (209) is fixedly connected to one side of the surface of the second button cap (202), a second piezoelectric crystal (210) is installed on one side of the surface of the second button cap (202), a first moving contact (211) is installed on one side of the surface of the first static contact (203), one end of the first static contact (203) is electrically connected to a first pin (212), a second moving contact (213) is installed on one side of the surface of the second static contact (205), and one end of the second static contact (205) is electrically connected to a second pin (214).

2. An electrical control switch according to claim 1, characterized in that: The first stationary contact (203) is installed on one side of the surface of the first moving contact (211), and the second stationary contact (205) is installed on one side of the surface of the second moving contact (213).

3. The electrical control switch according to claim 1, characterized in that: One end of the first spring (204) is fixedly connected to the first pressure block (208), and one end of the second spring (206) is fixedly connected to the second pressure block (209).

4. The electrical control switch according to claim 1, characterized in that: The display mechanism (3) comprises a display screen (301), a fixing plate (302), bolts (303) and a temperature sensor (304); the display screen (301) is mounted on one side of the surface of the shell (1); the fixing plate (302) is mounted on one side of the inner surface of the shell (1); the bolts (303) are mounted inside the shell (1); and the temperature sensor (304) is mounted on one side of the inner surface of the shell (1).

5. An electrical control switch according to claim 4, characterized in that: The display screen (301) is electrically connected to the temperature sensor (304), and the bolt (303) passes through the fixing plate (302).

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