Double-coil switch with contact temperature monitoring function

Abstract

The utility model belongs to the technical field of relays and discloses a double-coil switch with a contact temperature monitoring function, which comprises a double-coil switch body and a temperature sensor, a contact cavity is arranged in the double-coil switch body, the double-coil switch body further comprises the temperature sensor used for monitoring contact temperature, a temperature sensing end of the temperature sensor is arranged in the contact cavity, and the temperature sensing end of the temperature sensor is connected with the contact cavity. The temperature sensor is arranged in the contact cavity so that the temperature sensing end of the temperature sensor can sense the temperature in the contact cavity in real time so as to monitor the real-time temperature of the contact in the contact cavity, the temperature of the contact can be monitored in real time through the temperature sensor, temperature abnormity can be found in time, and then abnormity warning is provided for a user.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a double-coil switch with contact temperature monitoring. Background Art

[0002] A dual-coil switch is a relay used to control circuits. It is widely used in fields such as intelligent control of automotive power supplies, smart homes, and industrial control systems. It has two independent coils, an iron core, and a set of contacts. One coil is used to attract the iron core, while the other coil is used to release the iron core. When current is passed through any set of coils, the iron core will be attracted or released, thereby opening or closing the contacts.

[0003] Existing double-coil switches may encounter abnormal problems such as excessive contact temperature during daily use. For example, after a double-coil switch has been used for a long time, the silver layer on the contact surface is damaged, resulting in an increase in the voltage drop when the contacts are opened and closed, which in turn increases the heat generation and causes abnormal contact temperature; or the load current is too large (i.e., greater than the rated current or the maximum allowable current) causing abnormal contact temperature; or the circuit is not locked, or other poor contact causes abnormal contact temperature. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a dual-coil switch with contact temperature monitoring, which can monitor the contact temperature in real time through a temperature sensor, detect temperature anomalies in time, and provide abnormal warnings.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a double-coil switch with contact temperature monitoring, comprising a double-coil switch body, wherein the double-coil switch body is provided with a contact cavity, and further comprising a temperature sensor for monitoring the contact temperature; the temperature sensing end of the temperature sensor is arranged in the contact cavity, so that the temperature sensing end of the temperature sensor senses the temperature in the contact cavity in real time, so as to monitor the real-time temperature of the contact in the contact cavity.

[0007] Furthermore, the temperature sensor is equipped with a control board, which is installed in the double-coil switch body; the signal output end of the temperature sensor is connected to the signal input end of the control board; and the temperature sensing end of the temperature sensor is suspended and fixed in the contact cavity.

[0008] Furthermore, the double-coil switch body includes a shell and a switch body, the shell includes an upper shell and a lower shell arranged upper and lower, the inner cavities of the upper shell and the lower shell together form an installation cavity, and the switch body is assembled in the installation cavity.

[0009] Furthermore, the switch body includes a contact part and a coil part, the contact of the contact part extends into the inner cavity of the lower shell, and the inner cavity wall of the lower shell and the contact part jointly form the contact cavity; the control board is fixed on the lower shell.

[0010] Furthermore, the temperature sensing end of the temperature sensor is a temperature measuring piece, which includes a temperature measuring part, a plug-in part, and a connecting part connecting the temperature measuring part and the plug-in part; the signal processing circuit and the signal output end of the temperature sensor are integrated on the control board, and the plug-in part is inserted and fixed on the signal output end of the temperature sensor so that the temperature measuring piece forms a stable support and forms an electrical connection with the signal input end of the control board.

[0011] Furthermore, the temperature measuring part and the plug-in part are respectively arranged at an angle with the connecting part.

[0012] Furthermore, the angle formed by the temperature measuring part and the connecting part is 90 degrees, and the angle formed by the plug-in part and the connecting part is 90 degrees.

[0013] The technical solution provided by the utility model has the following beneficial effects:

[0014] By arranging the temperature sensing end of the temperature sensor in the contact cavity, the temperature sensing end of the temperature sensor can sense the temperature in the contact cavity in real time, so as to monitor the real-time temperature of the contact in the contact cavity, and when the contact temperature suddenly rises abnormally, the temperature abnormality can be discovered in time through the temperature sensor, and then an abnormal warning can be provided to prevent more serious accidents from occurring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a cross-sectional view of a dual coil switch with contact temperature monitoring in an embodiment;

[0016] Figure 2 Shown is an exploded view of a dual coil switch with contact temperature monitoring in an embodiment;

[0017] Figure 3 Shown Figure 2 A magnified schematic diagram of area A in the middle;

[0018] Figure 4 Shown is a schematic diagram of a temperature sensor in an embodiment. DETAILED DESCRIPTION

[0019] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figures 1 to 3 As shown, this embodiment provides a dual-coil switch with contact temperature monitoring (hereinafter referred to as the dual-coil switch), the dual-coil switch includes a dual-coil switch body 1, the dual-coil switch body 1 has a contact cavity 13, the dual-coil switch also includes a temperature sensor for monitoring the contact temperature, the temperature sensing end of the temperature sensor is arranged in the contact cavity 13, so that the temperature sensing end of the temperature sensor senses the temperature in the contact cavity 13 in real time, so as to monitor the real-time temperature of the contact in the contact cavity 13.

[0022] In this embodiment, the temperature sensor is equipped with a control board 3, which is assembled in the double-coil switch body 1. The signal output end of the temperature sensor is connected to the signal input end of the control board 3, and the temperature sensing end of the temperature sensor is suspended and fixed in the contact cavity 13.

[0023] like Figure 4 As shown, the temperature sensing end of the temperature sensor is a temperature measuring piece 2, and the temperature measuring piece 2 includes a temperature measuring part 21 and a plug-in part 23 and a connecting part 22 connecting the temperature measuring part 21 and the plug-in part 23. The signal processing circuit and the signal output end of the temperature sensor are integrated on the control board 3. The plug-in part 23 is inserted and fixed on the signal output end of the temperature sensor, that is, the plug-in part 23 is welded to the signal output end of the temperature sensor on the control board 3, so that the temperature measuring piece 2 forms a stable support and is electrically connected to the signal input end of the control board 3, that is, the electrical connection between the signal output end of the temperature sensor and the signal input end of the control board 3 is realized, and then the actual temperature measured signal value of the temperature sensor is transmitted to the display end of the control board 3 or the control unit of the control board 3.

[0024] The angle formed by the temperature measuring part 21 and the connecting part 22 is 90 degrees, and the angle formed by the plug-in part 23 and the connecting part 22 is 90 degrees, so that the temperature measuring piece 2 is stepped, and the temperature measuring piece 2 is arranged at a distance from the double-coil switch body 1, so as to further ensure the stability of the temperature measuring piece 2 suspended and fixed in the contact cavity 13, and also avoid the temperature measuring piece 2 directly contacting the double-coil switch body 1, so as to prevent the temperature measuring piece 2 from being damaged by the abnormal current on the double-coil switch body 1.

[0025] By setting the temperature sensing end of the temperature sensor in the contact cavity 13, the temperature sensing end of the temperature sensor can sense the temperature in the contact cavity 13 in real time, so as to monitor the real-time temperature of the contacts in the contact cavity 13, and when the contact temperature suddenly rises abnormally, the temperature abnormality can be detected in time through the temperature sensor, and then an abnormal warning can be provided to prevent more serious accidents.

[0026] Of course, in other embodiments, the angles between the temperature measuring portion 21 and the plug-in portion 23 and the connecting portion 22 may be less than 90 degrees or greater than 90 degrees, which will not be described in detail herein.

[0027] In another preferred embodiment, Figure 2 As shown, the double-coil switch body 1 includes a shell 11 and a switch body 12. The shell 11 includes an upper shell 111 and a lower shell 112 arranged upper and lower. The inner cavities of the upper shell 111 and the lower shell 112 together form an installation cavity, and the switch body 12 is assembled in the installation cavity.

[0028] More specifically, the switch body 12 includes a contact portion 121 and a coil portion 122. The contact of the contact portion 121 extends into the inner cavity of the lower shell 112, and the inner cavity wall of the lower shell 112 and the contact portion 121 together form a contact cavity 13. The control board 3 is fixed to the lower shell 112 by screws. In addition, the coil portion 122 of the assembled double-coil switch is inserted into the inner cavity of the upper shell 111.

[0029] In this specific embodiment, the number of temperature measuring plates 2 is 2, and the temperature measuring plates 2 are metal copper plates or other heat-conducting metal plates. At the same time, the control board 3 is also correspondingly integrated with a signal processing circuit and a signal output end of a temperature sensor that matches the temperature measuring plate 2; or the control board 3 is also correspondingly integrated with a signal output end of a temperature sensor that matches the temperature measuring plate 2, and the two temperature measuring plates 2 share the signal processing circuit of the same temperature sensor.

[0030] The two temperature measuring pieces 2 are respectively installed in the contact cavity 13 at intervals. The contact cavity 13 is located in the installation cavity to ensure that the air in the contact cavity 13 is in a closed state to prevent the temperature sensor from being disturbed by the outside world when monitoring the contact temperature.

[0031] The temperature measuring part 21, the connecting part 22 and the connecting part 22 are all at a certain distance from the outer surface of the contact part 121 to ensure that they are not in direct contact with each other and are in a suspended state, and the temperature measuring part 21 is in direct contact with the air in the contact cavity 13 to ensure temperature monitoring of the air in the contact cavity 13.

[0032] When the temperature of the contact is abnormally high, the heat generated by the contact conducts heat to the air in the contact cavity 13, so that the temperature in the contact cavity 13 rises accordingly. At this time, the temperature measuring part 21 in the contact cavity 13 also senses the real-time temperature in the contact cavity 13 accordingly, and feeds back the monitored real-time temperature to the user, so that the user can find the abnormal contact temperature in time and immediately cut off the power to facilitate the user to check the circuit or replace the damaged double-coil switch.

[0033] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A double coil switch with contact temperature monitoring, comprising a double coil switch body, wherein the double coil switch body has a contact cavity, characterized in that: Also included is a temperature sensor for monitoring the contact temperature; The temperature sensing end of the temperature sensor is arranged in the contact cavity, so that the temperature sensing end of the temperature sensor senses the temperature in the contact cavity in real time, so as to monitor the real-time temperature of the contact in the contact cavity.

2. The double coil switch with contact temperature monitoring according to claim 1, characterized in that: The temperature sensor is equipped with a control board, and the control board is installed in the double-coil switch body; the signal output end of the temperature sensor is connected to the signal input end of the control board; the temperature sensing end of the temperature sensor is suspended and fixed in the contact cavity.

3. The double coil switch with contact temperature monitoring according to claim 2, characterized in that: The double-coil switch body comprises a shell and a switch body, the shell comprises an upper shell and a lower shell which are arranged in an upper and lower manner, the inner cavities of the upper shell and the lower shell together form an installation cavity, and the switch body is assembled in the installation cavity.

4. The double coil switch with contact temperature monitoring according to claim 3, characterized in that: The switch body comprises a contact part and a coil part, the contact of the contact part extends into the inner cavity of the lower shell, and the inner cavity wall of the lower shell and the contact part jointly form the contact cavity; the control board is fixed on the lower shell.

5. The double coil switch with contact temperature monitoring according to any one of claims 2 to 4, characterized in that: The temperature sensing end of the temperature sensor is a temperature measuring piece, which includes a temperature measuring part, a plug-in part, and a connecting part connecting the temperature measuring part and the plug-in part; the signal processing circuit and the signal output end of the temperature sensor are integrated on the control board, and the plug-in part is inserted and fixed on the signal output end of the temperature sensor so that the temperature measuring piece forms a stable support and is electrically connected to the signal input end of the control board.

6. The double coil switch with contact temperature monitoring according to claim 5, characterized in that: The temperature measuring part and the plug-in part are respectively arranged at an angle with the connecting part.

7. The double coil switch with contact temperature monitoring according to claim 5, characterized in that: The included angle between the temperature measuring part and the connecting part is 90 degrees, and the included angle between the plug-in part and the connecting part is 90 degrees.

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