CN215496551U - Microwave waveguide overheating circuit breaker - Google Patents
Microwave waveguide overheating circuit breaker Download PDFInfo
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- CN215496551U CN215496551U CN202122174132.4U CN202122174132U CN215496551U CN 215496551 U CN215496551 U CN 215496551U CN 202122174132 U CN202122174132 U CN 202122174132U CN 215496551 U CN215496551 U CN 215496551U
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- memory spring
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Abstract
The utility model discloses a microwave waveguide overheating circuit breaking device which comprises a positioning plate, a threaded sleeve, a two-way memory spring, a movable contact plate, a fixed contact plate, a top plate, an adjusting plate, an ejector rod and a guide rod, wherein the threaded sleeve is fixedly arranged on the positioning plate, the upper end of the sleeve is in threaded connection with the threaded sleeve, the movable contact plate is fixedly arranged in the sleeve, an upper contact is arranged on the top surface of the movable contact plate, and a first electric wire in contact with the upper contact is fixedly arranged on the movable contact plate. When the waveguide device is in an abnormal working state, the interior of the shell of the waveguide device is rapidly heated and reaches the memory temperature of the high-temperature form of the two-way memory spring, the two-way memory spring loses elasticity, the movable contact plate, the top plate and the ejector rod move downwards under the action of gravity, and the lower contact is separated from the upper contact at the moment, so that the microwave waveguide device is in an open circuit state and is further protected.
Description
Technical Field
The utility model belongs to the technical field of microwave waveguides, and particularly relates to a microwave waveguide overheating circuit breaking device.
Background
Microwave refers to electromagnetic wave in the range of 300MHz to 300GHz, and waveguide is a transmission device specific to microwave systems. The original double-core or cable, capacitor, inductor and the like are replaced, and the traditional cable and the like are only suitable for the transmission of electromagnetic waves with the frequency below 300 MHz. Waveguide switches are common devices in microwave electronics, and function to select microwave channels as desired and achieve high quality transmission of signals. Compared with other microwave switches, the electromechanical microwave waveguide switch has the characteristics of low standing wave, small insertion loss and large power capacity, and is widely applied to systems such as radar, electronic countermeasure and the like. When the temperature inside the housing of the microwave waveguide device is suddenly increased due to the abnormal working state or working environment of the microwave waveguide device, the microwave waveguide device is easily damaged or the service life of the microwave waveguide device is affected, and the power supply circuit of the microwave waveguide device needs to be cut off in time.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: provided is a microwave waveguide overheating cut-off device capable of cutting off a power supply circuit when the temperature inside a microwave waveguide device casing rises sharply.
In order to solve the technical problems, the utility model is realized by the following technical scheme: a microwave waveguide overheating circuit breaking device comprises a positioning plate, a threaded sleeve, a two-way memory spring, a movable contact plate, a fixed contact plate, a top plate, an adjusting plate, an ejector rod and a guide rod, wherein the threaded sleeve is fixedly arranged on the positioning plate, the upper end of the sleeve is in threaded connection with the threaded sleeve, the movable contact plate is fixedly arranged in the sleeve, an upper contact is arranged on the top surface of the movable contact plate, a first electric wire which is in contact with the upper contact is fixedly arranged on the movable contact plate, the fixed contact plate is slidably arranged in the sleeve, a lower contact which is matched with the upper contact in position is arranged on the lower plate surface of the fixed contact plate, a second electric wire which is in contact with the lower contact is fixedly arranged on the fixed contact plate, the first electric wire and the second electric wire both extend to the outside of the sleeve, the top plate is slidably arranged in the sleeve, and the top plate is fixedly connected with the movable contact plate through the ejector rod, the double-stroke memory spring is arranged in the sleeve, the upper end of the double-stroke memory spring is fixedly connected with the top plate, the adjusting plate is installed in the sleeve in a sliding mode, the lower end of the double-stroke memory spring is fixedly connected with the adjusting plate, the lower end of the sleeve is in threaded connection with a positioning bolt used for fixedly pressing the adjusting plate, the upper ends of at least two guide rods are fixedly installed on the fixed contact plate, and the lower ends of the guide rods penetrate through the movable contact plate and the top plate in a sliding mode.
Preferably, an adhesive layer is fixedly arranged on the top surface of the positioning plate.
Preferably, the threaded sleeve is fixedly welded on the positioning plate.
Preferably, the two-way memory spring is a nickel-titanium alloy two-way memory spring.
Compared with the prior art, the utility model has the advantages that: the first wire circuit is connected to a power supply source, the second wire circuit is connected to a power supply input end of the microwave waveguide device, the sleeve is rotated to move outwards relative to the threaded sleeve, the lower end of the sleeve and the upper plate surface of the positioning plate can be abutted to the inner wall of the shell of the waveguide device, the installation is firm, when the temperature in the shell of the waveguide device is normal, the two-way memory spring is in the maximum elastic force state according to the characteristics of the two-way memory spring, when the waveguide device is in an abnormal working state and causes the temperature in the shell to be rapidly raised and reaches the memory temperature of the high-temperature form of the two-way memory spring, the two-way memory spring loses elasticity, the movable contact plate, the top plate and the ejector rod move downwards under the action of gravity, the lower contact is separated from the upper contact at the moment, the microwave waveguide device is in an open circuit state, and the microwave waveguide device is further protected.
Description of the drawings:
the utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of the internal structure of the present invention.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to specific embodiments below:
as shown in fig. 1, the microwave waveguide overheating circuit breaking device comprises a positioning plate 1, a screw sleeve 2, a sleeve 3, a two-way memory spring 4, a movable contact plate 5, a fixed contact plate 6, a top plate 7, an adjusting plate 8, a top rod 9 and a guide rod 10, wherein the screw sleeve 2 is fixedly arranged on the positioning plate 1, the upper end of the sleeve 3 is in threaded connection with the screw sleeve 2, the movable contact plate 5 is fixedly arranged in the sleeve 3, an upper contact 61 is arranged on the top surface of the movable contact plate 5, a first electric wire 52 in contact with the upper contact 61 is fixedly arranged on the movable contact plate 5, the fixed contact plate 6 is slidably arranged in the sleeve 3, a lower contact 51 matched with the upper contact 61 is arranged on the lower plate surface of the fixed contact plate 6, a second electric wire 62 in contact with the lower contact 51 is fixedly arranged on the fixed contact plate 6, and the first electric wire 52 and the second electric wire 62 both extend to the outside of the sleeve 3, the top plate 7 is slidably mounted inside the sleeve 3, the top plate 7 is fixedly connected with the movable contact plate 5 through a top rod 9, the two-way memory spring 4 is arranged in the sleeve 3, the upper end of the two-way memory spring 4 is fixedly connected with the top plate 7, the adjusting plate 8 is slidably mounted in the sleeve 3, the lower end of the two-way memory spring 4 is fixedly connected with the adjusting plate 8, the lower end of the sleeve 3 is in threaded connection with a positioning bolt 12 used for tightly pressing and fixing the adjusting plate 8, the upper ends of at least two guide rods 10 are fixedly mounted on the fixed contact plate 6, the lower ends of the guide rods 10 slide to penetrate through the movable contact plate 5 and the top plate 7, and the two-way memory spring 4 is made of nickel-titanium alloy.
In order to fix the positioning plate 1 inside the housing of the waveguide device, an adhesive layer 11 is fixedly arranged on the top surface of the positioning plate 1.
The thread insert 2 is fixedly welded on the positioning part 1, and the thread insert is fixedly welded and has the advantages of firm structure and convenience in installation.
The first wire 51 is connected with a power supply circuit, the second wire 61 is connected with a power supply input end of the microwave waveguide device, the sleeve 3 is rotated to move outwards relative to the threaded sleeve 2, the lower end of the sleeve 3 and the upper plate surface of the positioning plate 1 can be abutted against the inner wall of the shell of the waveguide device, the microwave waveguide device has the advantage of firm installation, when the temperature in the shell of the waveguide device is at a normal temperature, according to the characteristics of the two-way memory spring 4, the two-way memory spring 4 is in a maximum elastic force state, when the waveguide device is in an abnormal working state, the temperature in the shell is rapidly raised and reaches the memory temperature of the high-temperature state of the two-way memory spring 4, the two-way memory spring 4 loses elasticity, the movable contact plate 5, the top plate 7 and the ejector rod 9 move downwards under the action of gravity, and the lower contact 61 is separated from the upper contact 61 at the moment, so that the microwave waveguide device is in an open circuit state, thereby protecting it.
It is to be emphasized that: it will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. A microwave waveguide overheating cut-off device, characterized in that: comprises a positioning plate (1), a threaded sleeve (2), a sleeve (3), a two-way memory spring (4), a movable contact plate (5), a fixed contact plate (6), a top plate (7), an adjusting plate (8), a push rod (9) and a guide rod (10), wherein the threaded sleeve (2) is fixedly arranged on the positioning plate (1), the upper end of the sleeve (3) is in threaded connection with the threaded sleeve (2), the movable contact plate (5) is fixedly arranged in the sleeve (3), an upper contact (61) is arranged on the top surface of the movable contact plate (5), a first electric wire (52) in contact with the upper contact (61) is fixedly arranged on the movable contact plate (5), the fixed contact plate (6) is slidably arranged in the sleeve (3), a lower contact (51) matched with the upper contact (61) in position is arranged on the lower plate surface of the fixed contact plate (6), a second electric wire (62) in contact with the lower contact (51) is fixedly arranged on the fixed contact plate (6), the first electric wire (52) and the second electric wire (62) both extend to the outside of the sleeve (3), the top plate (7) is slidably arranged in the sleeve (3), the top plate (7) is fixedly connected with the movable contact plate (5) through a mandril (9), the two-way memory spring (4) is arranged in the sleeve (3), and the upper end of the two-way memory spring (4) is fixedly connected with the top plate (7), the adjusting plate (8) is installed in the sleeve (3) in a sliding way, the lower end of the two-way memory spring (4) is fixedly connected with the adjusting plate (8), the lower end of the sleeve (3) is provided with a positioning bolt (12) which is used for pressing and fixing the adjusting plate (8), the upper ends of at least two guide rods (10) are fixedly arranged on the fixed contact plate (6), the lower end of the guide rod (10) penetrates through the movable contact board (5) and the top board (7) in a sliding mode.
2. A microwave waveguide overheating disconnection apparatus according to claim 1, wherein: and an adhesive layer (11) is fixedly arranged on the top surface of the positioning plate (1).
3. A microwave waveguide overheating disconnection apparatus according to claim 1, wherein: the threaded sleeve (2) is fixedly welded on the positioning plate (1).
4. A microwave waveguide overheating disconnection apparatus according to claim 1, wherein: the two-way memory spring (4) is a nickel-titanium alloy two-way memory spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122174132.4U CN215496551U (en) | 2021-09-09 | 2021-09-09 | Microwave waveguide overheating circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122174132.4U CN215496551U (en) | 2021-09-09 | 2021-09-09 | Microwave waveguide overheating circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215496551U true CN215496551U (en) | 2022-01-11 |
Family
ID=79768617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122174132.4U Active CN215496551U (en) | 2021-09-09 | 2021-09-09 | Microwave waveguide overheating circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215496551U (en) |
-
2021
- 2021-09-09 CN CN202122174132.4U patent/CN215496551U/en active Active
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