CN212322914U - Auxiliary switch device for high-voltage direct-current relay - Google Patents
Auxiliary switch device for high-voltage direct-current relay Download PDFInfo
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- CN212322914U CN212322914U CN202020511728.1U CN202020511728U CN212322914U CN 212322914 U CN212322914 U CN 212322914U CN 202020511728 U CN202020511728 U CN 202020511728U CN 212322914 U CN212322914 U CN 212322914U
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Abstract
The utility model discloses an auxiliary switch device for a high-voltage direct-current relay, which belongs to the field of high-voltage direct-current relays and comprises a shell, a coil arranged inside the shell, a movable iron core arranged inside the coil, a transmission rod connected with the movable iron core, a spring for realizing the reset function of the movable iron core and the transmission rod, a fixed contact fixed on the shell and a movable contact aligned with the fixed contact and fixed at the upper end of the transmission rod; a second contact is fixed on the transmission rod, a first contact which is aligned with and matched with the second contact is connected to the shell, and the first contact is used for being connected with an external signal circuit; the transmission rod is fixed with a connecting plate, the connecting plate is fixed with an indicating block penetrating through the shell, and the shell is provided with a limiting opening for the indicating block to move in a telescopic mode. The utility model discloses a contact switch and mechanical structure combination are used, can dual instruction high voltage direct current relay's operating condition, even corresponding external signal circuit breaks down also can effectively exert a function, and the using value is higher.
Description
Technical Field
The utility model relates to a high voltage direct current relay field, specificly relate to an auxiliary switch device for high voltage direct current relay.
Background
The high-voltage direct-current relay is an electronic control device, which has a control system (also called an input loop) and a controlled system (also called an output loop), and is usually applied to an automatic control circuit under the condition of supplying power by a direct-current power supply. The common high-voltage direct-current relay generally has no auxiliary switch, the working state of the relay can not be monitored in real time, timely and effective feedback can not be realized when abnormality occurs, an external special circuit is needed to be adopted for carrying out signal acquisition on the working state of the high-voltage direct-current relay in practical application, the cost is increased, the requirement on designers is high, the overall dimension of the whole control system is limited, and the development direction of miniaturization and light weight of the whole vehicle system is not met.
At present, an auxiliary switch device for a high-voltage direct-current relay is disclosed in a patent with an authorization publication number of CN 209029309U, which includes a metal cavity and a movable iron core disposed in the metal cavity, a first contact is disposed at the bottom of the metal cavity through a ceramic ring, a second contact is disposed at the bottom of the movable iron core through a conduction piece, and the first contact, the conduction piece and the second contact form a contact switch. When the high-voltage direct-current relay is applied, the movable iron core drives the transmission rod to ascend, the second contact is far away from the first contact, and the contact switch is disconnected; when the high-voltage direct-current relay is closed, the movable iron core drives the transmission rod to descend, the second contact contacts the first contact, the contact switch is switched on, the first contact is connected with an external signal circuit, and the working state of the high-voltage direct-current relay can be judged through signals of the external circuit. The switch device is simple in structure, is installed in the high-voltage direct-current relay, does not occupy redundant space, and effectively ensures that the function of an auxiliary contact switch is realized under the condition that the original volume of a product is not changed. However, it has the following disadvantages: once the external signal circuit corresponding to the contact switch has a fault, the indication function of the auxiliary switch device on the working state of the high-voltage direct-current relay is invalid.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide an auxiliary switch device for high voltage direct current relay, it adopts contact switch and mechanical structure combination application, can dual instruction high voltage direct current relay's operating condition, even corresponding external signal circuit breaks down also can effectively exert a function, and the using value is higher.
2. Technical scheme
In order to solve the above problem, the utility model adopts the following technical scheme:
an auxiliary switch device for a high-voltage direct-current relay comprises a shell, a coil arranged in the shell, a movable iron core arranged on the inner side of the coil, a transmission rod connected with the movable iron core, a spring for realizing the reset function of the movable iron core and the transmission rod, a fixed contact fixed on the shell and a movable contact aligned with the fixed contact and fixed at the upper end of the transmission rod; a second contact is fixed on the transmission rod, a first contact which is aligned with and matched with the second contact is connected to the shell, and the first contact is used for being connected with an external signal circuit; the transmission rod is fixed with a connecting plate, an indicating block penetrating through the shell is fixed on the connecting plate, and a limiting opening for the indicating block to move in a telescopic mode is formed in the shell.
Further, the second lower end of the transmission rod longitudinally penetrates through the movable iron core and extends to the lower portion of the movable iron core, the second contact and the connecting plate are connected to the lower end of the transmission rod respectively, the first contact is located between the movable iron core and the second contact, and the limiting opening is formed in the bottom of the shell. The main parts of the auxiliary switch device are arranged at the lower end of the shell, so that the adverse effect on other structures can be avoided. The first contact is arranged above the second contact, so that when a coil of the high-voltage direct-current relay is electrified, the transmission rod and the movable iron core ascend together, the second contact moves upwards along with the transmission rod to contact the first contact, and a corresponding external signal circuit is conducted; when the coil of the high-voltage direct-current relay is powered off, the transmission rod and the movable iron core descend together, the second contact moves downwards along with the transmission rod to be separated from the first contact, the corresponding external signal circuit is disconnected, namely the corresponding external signal circuit is synchronously switched on and synchronously switched off with the high-voltage direct-current relay, the application conforms to the inertial thinking of people, and the application is convenient.
Further, be equipped with in the casing and be used for setting up the last cavity of moving contact and be used for setting up the lower cavity that moves the iron core, the transfer line with move iron core sliding connection, be fixed with the stopper of butt moving the iron core upper end on the transfer line, the below that moves the iron core is equipped with the limiting plate that is used for installing first contact, the lower cavity internal fixation is equipped with the fixed block that is located the stopper top, the upper end of transfer line vertically runs through the fixed block and extends to in the supreme cavity, a guide way that is used for installing the spring is seted up to the lower part of fixed block, the lower extreme fixed connection of spring. The driving rod and the movable iron core are connected in a sliding mode, so that the step of fixed connection between the driving rod and the movable iron core can be saved, the limiting block can facilitate the upward movement of the movable iron core to push the driving rod to move upwards, the limiting block used for installing the first contact is used for limiting the lower end of the movable iron core, and the purpose of limiting the downward stroke of the movable iron core and the driving rod is achieved by fully utilizing the existing components; the setting of fixed block makes the spring can install earlier fixed again with fixed block and casing fixed connection can, the setting installation of the spring of being convenient for.
Furthermore, a sealing rubber ring is arranged in the limiting opening along the peripheral side of the limiting opening. The sealing rubber ring can prevent external factors such as dust, water vapor and the like from entering the shell through the limiting port, and is favorable for protecting parts in the shell.
3. Advantageous effects
The utility model is provided with a first contact with fixed position and a second contact moving along with the transmission rod to form a contact switch, and the first contact is used for being connected with an external signal circuit and can indicate the working state of the high-voltage direct-current relay; still be equipped with simultaneously with transfer line fixed connection's instruction piece, and instruct the piece and can run through to the casing outside, can instruct high-voltage direct current relay's operating condition through the inboard or the outside that the instruction piece is located the casing, promptly the utility model discloses a contact switch and mechanical structure combination are used, can dual instruction high-voltage direct current relay's operating condition, even corresponding external signal circuit breaks down and also can effectively exert a function, and can judge whether corresponding external signal circuit breaks down through the position of the information of the corresponding external signal circuit of contrast and instruction piece, and the using value is higher.
Drawings
Fig. 1 is a schematic structural diagram of the high-voltage direct-current relay of the present invention when the high-voltage direct-current relay is powered off;
fig. 2 is a schematic structural diagram of the high-voltage direct-current relay of the present invention when the high-voltage direct-current relay is powered on;
FIG. 3 is a schematic diagram of an external signal circuit according to an embodiment.
Reference numerals: 1. a second contact; 2. a first contact; 3. a limiting block; 4. a spring; 5. A fixed block; 6. a transmission rod; 7. a moving contact; 8. static contact; 9. a movable iron core; 10. a connecting plate; 11. sealing the rubber ring; 12. an indication block; 13. a housing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 2, an auxiliary switch device for a high-voltage direct-current relay includes a housing 13, a coil disposed inside the housing 13, a movable iron core 9 disposed inside the coil, a transmission rod 6 connected to the movable iron core 9, a spring 4 for implementing a reset function of the movable iron core 9 and the transmission rod 6, a stationary contact 8 fixed on the housing 13, and a movable contact 7 aligned with the stationary contact 8 and fixed on an upper end of the transmission rod 6; a second contact 1 is fixed on the driving rod 6, a first contact 2 aligned and matched with the second contact 1 is connected to the shell 13, and the first contact 2 is used for being connected with an external signal circuit; the transmission rod 6 is fixed with a connecting plate 10, the connecting plate 10 is fixed with an indicating block 12 penetrating through a shell 13, and the shell 13 is provided with a limiting opening for the indicating block 12 to move in a telescopic mode.
In this embodiment, a sealing rubber ring 11 is arranged in the limiting opening along the peripheral side of the limiting opening. The sealing rubber ring 11 can prevent external factors such as dust, water vapor and the like from entering the shell 13 through the limiting port, and is favorable for protecting parts inside the shell 13.
Example 2
The present embodiment is different from embodiment 1 in that:
in this embodiment, the second lower end of the transmission rod 6 longitudinally penetrates through the movable iron core 9 and extends to the lower side of the movable iron core 9, the second contact 1 and the connection plate 10 are respectively connected to the lower end of the transmission rod 6, the first contact 2 is located between the movable iron core 9 and the second contact 1, and the limiting opening is opened at the bottom of the housing 13. The main components of the auxiliary switch device are arranged at the lower end of the shell 13, so that the adverse effect on other structures can be avoided; the first contact 2 is arranged above the second contact 1, so that when a coil of the high-voltage direct-current relay is electrified, the transmission rod 6 and the movable iron core 9 ascend together, the second contact 1 moves upwards along with the transmission rod 6 to be in contact with the first contact 2, and a corresponding external signal circuit is conducted; when the coil of the high-voltage direct-current relay is powered off, the transmission rod 6 and the movable iron core 9 descend together, the second contact 1 moves downwards along with the transmission rod 6 to be separated from the first contact 2, the corresponding external signal circuit is disconnected, namely the corresponding external signal circuit is synchronously switched on and switched off with the high-voltage direct-current relay, the application conforms to the inertial thinking of people, and the application is convenient.
In this embodiment, be equipped with in the casing 13 and be used for setting up the last cavity of moving contact 7 and be used for setting up the lower cavity that moves iron core 9, transfer line 6 with move iron core 9 sliding connection, be fixed with the stopper 3 of butt in moving iron core 9 upper end on transfer line 6, the below of moving iron core 9 is equipped with the limiting plate that is used for installing first contact 2, the indoor fixed block 5 that is located stopper 3 top that is equipped with of lower cavity, the upper end of transfer line 6 vertically runs through fixed block 5 and extends to the supreme cavity in, a guide way that is used for installing spring 4 is seted up to the lower part of fixed block 5, the lower extreme fixed connection of spring 4 is on stopper 3. The transmission rod 6 is connected with the movable iron core 9 in a sliding manner, so that the step of fixed connection between the transmission rod 6 and the movable iron core 9 can be saved, the limiting block 3 can facilitate the upward movement of the movable iron core 9 to push the transmission rod 6 to move upward, the limiting block for mounting the first contact 2 is used for limiting the lower end of the movable iron core 9, and the purpose of limiting the downward stroke of the movable iron core 9 and the transmission rod 6 is achieved by fully utilizing the existing components; the spring 4 can be installed and fixed firstly by the aid of the fixing block 5, and then the fixing block 5 and the shell 13 are fixedly connected, so that the spring 4 is convenient to install.
Otherwise, the same procedure as in example 1 was repeated.
The specific working principle of the auxiliary switch device for the high-voltage direct-current relay is as follows:
the first contact 2 is connected to a switch control circuit (external signal circuit) of the LED lamp, as shown in fig. 3, S denotes the first contact 2, L denotes the LED lamp, and P denotes a power source.
As shown in fig. 2, when the coil of the high-voltage direct-current relay is energized, an electromagnetic attraction force is generated due to an electromagnetic action, the movable iron core 9 moves upwards and pushes the transmission rod 6 to move upwards through the limit block 3, the spring 4 is compressed, the movable contact 7 moves upwards along with the transmission rod 6 to be in contact with the fixed contact 8 for conduction, meanwhile, the second contact 1 moves upwards along with the transmission rod 6 to be in contact with the first contact 2, so that the switch S is closed, the LED lamp is turned on, the connecting plate 10 moves upwards along with the transmission rod 6 to drive the indicating block 12 to move upwards, and the bottom of the indicating block 12 is located on the; as shown in fig. 1, when the coil of the high-voltage direct-current relay is powered off, due to the fact that the electromagnetic attraction force disappears, under the reset action of the spring 4, the limiting block 3 pushes the transmission rod 6 and the movable iron core 9 to move downwards, the movable contact 7 moves downwards along with the transmission rod 6 to be separated from the fixed contact 8, meanwhile, the second contact 1 moves downwards along with the transmission rod 6 to be separated from the first contact 2, the switch S is turned off, the LED lamp is turned off, the connecting plate 10 moves downwards along with the transmission rod 6 to drive the indicating block 12 to move downwards, and the bottom of the indicating block 12 extends out of.
If the bottom of the indication block 12 is located on the inner side of the limit port and the LED lamp is not turned on, or the bottom of the indication block 12 is located on the outer side of the limit port and the LED lamp is turned on, the fault of the switch control circuit of the LED lamp can be known. Therefore, whether the corresponding external signal circuit is faulty or not can be determined by comparing the information of the corresponding external signal circuit with the position of the indication block.
According to the above, the utility model discloses a contact switch and mechanical structure combination are used, can dual instruction high voltage direct current relay's operating condition, even corresponding external signal circuit also can effectively exert a function of breaking down, and can judge whether corresponding external signal circuit breaks down through the information of the corresponding external signal circuit of contrast and the position of instruction piece, and the using value is higher.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (4)
1. An auxiliary switch device for a high-voltage direct-current relay comprises a shell (13), a coil arranged in the shell (13), a movable iron core (9) arranged on the inner side of the coil, a transmission rod (6) connected with the movable iron core (9), a spring (4) used for realizing the reset function of the movable iron core (9) and the transmission rod (6), a static contact (8) fixed on the shell (13) and a movable contact (7) aligned with the static contact (8) and fixed at the upper end of the transmission rod (6); the circuit is characterized in that a second contact (1) is fixed on the transmission rod (6), a first contact (2) which is aligned with and matched with the second contact (1) is connected to the shell (13), and the first contact (2) is used for being connected with an external signal circuit; the transmission rod (6) is fixedly provided with a connecting plate (10), an indicating block (12) penetrating through a shell (13) is fixedly arranged on the connecting plate (10), and the shell (13) is provided with a limiting opening for the indicating block (12) to move in a telescopic mode.
2. The auxiliary switch device for the HVDC relay according to claim 1, wherein the second lower end of the transmission rod (6) longitudinally penetrates through the movable iron core (9) and extends to the lower part of the movable iron core (9), the second contact (1) and the connecting plate (10) are respectively connected to the lower end of the transmission rod (6), the first contact (2) is located between the movable iron core (9) and the second contact (1), and the limiting opening is opened at the bottom of the housing (13).
3. An auxiliary switching device for a HVDC relay according to claim 2, it is characterized in that an upper chamber used for arranging the moving contact (7) and a lower chamber used for arranging the moving iron core (9) are arranged in the shell (13), the transmission rod (6) is connected with the movable iron core (9) in a sliding way, a limit block (3) which is abutted against the upper end of the movable iron core (9) is fixed on the transmission rod (6), a limiting plate for installing the first contact (2) is arranged below the movable iron core (9), a fixed block (5) positioned above the limiting block (3) is fixedly arranged in the lower cavity, the upper end of the transmission rod (6) longitudinally penetrates through the fixing block (5) and extends into the upper cavity, the lower part of the fixed block (5) is provided with a guide groove for installing the spring (4), and the lower end of the spring (4) is fixedly connected to the limiting block (3).
4. The auxiliary switch device for the HVDC relay of claim 1, wherein the limiting opening is provided with a sealing rubber ring (11) along the peripheral side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020511728.1U CN212322914U (en) | 2020-04-09 | 2020-04-09 | Auxiliary switch device for high-voltage direct-current relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020511728.1U CN212322914U (en) | 2020-04-09 | 2020-04-09 | Auxiliary switch device for high-voltage direct-current relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212322914U true CN212322914U (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020511728.1U Active CN212322914U (en) | 2020-04-09 | 2020-04-09 | Auxiliary switch device for high-voltage direct-current relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212322914U (en) |
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2020
- 2020-04-09 CN CN202020511728.1U patent/CN212322914U/en active Active
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