Pressurizing mechanism and contactor

Abstract

The utility model provides a pressurization mechanism and contactor relates to contactor technical field, pressurization mechanism includes first magnetic conductive sheet and second magnetic conductive sheet, the second magnetic conductive sheet is connected with moving contact module, when the moving contact module is electrified, the first magnetic conductive sheet and the second magnetic conductive sheet are magnetized and form the attractive force to apply the pressure to the moving contact module, increase the contact pressure, and increase the contact pressure. And the current short-circuit impact resistance of the contactor is improved. By arranging the pressurizing mechanism, the magnetic conductive sheets in the pressurizing mechanism can be magnetized after the contact module is contacted and electrified, so that attraction force is formed between the two groups of magnetic conductive sheets, the contact pressure is increased by utilizing the attraction force, and the short-circuit current impact resistance of electronic products such as a contactor and a relay is further improved; and the requirement that the short-circuit current impact resistance is 20KA or above can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage DC contactors, in particular to a boosting mechanism and a contactor. Background Art

[0002] In the field of high-voltage DC contactor technology, current contactors have limited ability to resist short-circuit current shocks. For example, some usage scenarios require that the contactor's ability to resist short-circuit current shocks reach 20KA or greater. Existing contactors are difficult to meet the requirements, and the pressure parameters between the contacts play an important role in improving the ability to resist short-circuit current shocks. Therefore, this application proposes a boosting mechanism for increasing the contact pressure and improving the contactor's ability to resist short-circuit current shocks.

[0003] In addition, there is a problem in that the closing and opening states of the main contacts of a traditional contactor or relay are not clearly indicated, and the present invention also provides a solution. Utility Model Content

[0004] The purpose of the utility model is to provide a boosting mechanism and a contactor, which solves the problem that the traditional contactor or relay has a low contact pressure, resulting in difficulty in further improving the ability to resist current short-circuit impact.

[0005] In order to solve the above problems, the utility model provides a boosting mechanism and a contactor, including a first magnetic conductive sheet and a second magnetic conductive sheet. The first magnetic conductive sheet is fixed on the base, and the second magnetic conductive sheet is connected to the moving contact module. When the moving contact module is energized, the second magnetic conductive sheet is magnetized, and an attractive force is formed between the first magnetic conductive sheet and the second magnetic conductive sheet, which applies pressure to the moving contact module, increases the contact pressure, and thereby improves the contactor's ability to resist current short-circuit impact.

[0006] Optionally, the first magnetic conductive sheet and the second magnetic conductive sheet may be disposed in an upper and lower position opposite to each other, or in other orientations.

[0007] Optionally, the second magnetic conductive sheet is fixedly connected to the moving contact by riveting, and limits the contact spring via a convex bump or a concave pit or three or more convex points and contacts the contact spring.

[0008] According to an embodiment of the present invention, the moving contact module includes several groups of single-pole contact assemblies, and the number of the first magnetic conductive sheets and the second magnetic conductive sheets is the same as the number of the single-pole contact assemblies.

[0009] In other embodiments, a group of first magnetic conductive sheets and a second magnetic conductive sheet may be used to achieve pressurization of multiple groups of contacts.

[0010] Optionally, the second magnetic conductive sheet moves with the contact assembly toward the first magnetic conductive sheet or does not move. The closer the second magnetic conductive sheet is to the first magnetic conductive sheet, the stronger the attraction is, achieving an effect of increasing the pressure on the contact.

[0011] According to an embodiment of the present invention, a plurality of the first magnetic conductive sheets are each installed with a pressing plate, and the pressing plate serves to assist in fixing the first magnetic conductive sheets.

[0012] According to an embodiment of the present invention, the first magnetic conductive sheet and the second magnetic conductive sheet both adopt a U-shaped structure or a U-shaped structure matched with a flat plate structure.

[0013] A contactor or relay comprises the above-mentioned boosting mechanism.

[0014] According to one embodiment of the present invention, the contactor also includes an auxiliary contact mechanism for monitoring the status of the main contacts. The auxiliary contacts can reflect the opening and closing status of the main contacts through the current or signal flowing through them, thereby monitoring the closing and opening status of the main contacts.

[0015] According to an embodiment of the present invention, the auxiliary contact mechanism is mounted on the base and is fixed with the assistance of a pressing plate.

[0016] The beneficial effect of the present invention is that, by setting up a boosting mechanism, the magnetic conductive sheet in the boosting mechanism can be magnetized after the contact module is in contact and energized, thereby forming an attractive force between the two groups of magnetic conductive sheets. This attractive force is used to increase the contact pressure, thereby improving the ability of electronic products such as contactors and relays to resist short-circuit current impacts, and can meet the requirements of short-circuit current impact resistance of 20KA and above. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the structure of a single-stage contact assembly and a booster mechanism;

[0019] Figure 2 It is a schematic diagram of the structure of the two-pole contact assembly and the boost mechanism;

[0020] Figure 3 It is a structural diagram of the pressure plate;

[0021] Figure 4 It is a structural diagram of the auxiliary contact mechanism. DETAILED DESCRIPTION

[0022] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0023] Example 1:

[0024] Booster mechanism, such as Figure 1 , including a first magnetic conductive sheet 031, a second magnetic conductive sheet 032 and a pressing plate 033.

[0025] The first magnetic conductive sheet 031 and the second magnetic conductive sheet 032 are arranged in an upper and lower opposite arrangement. In this embodiment, two groups of single-stage contact assemblies 022 are provided in the moving contact module to constitute a two-stage contact assembly. When the moving contact module is pushed upward by the electromagnetic system, the moving contact on the single-stage contact assembly 022 contacts the static contact above. The first magnetic conductive sheet 031 and the second magnetic conductive sheet 032 are respectively provided in two groups. The second magnetic conductive sheet 032 is connected to the single-stage contact assembly 022. When the moving contact module is energized, the first magnetic conductive sheet 031 and the second magnetic conductive sheet 032 are magnetized and form an attractive force. The second magnetic conductive sheet 032 is actuated and transmitted to the moving contact module, thereby increasing the contact pressure and achieving the effect of boosting the contact, thereby improving the contactor's ability to resist short-circuit current impact.

[0026] Furthermore, the second magnetic conductive sheet 032 is fixedly connected to the moving contact by riveting, and limits the contact spring 034 through a convex bump or a concave pit or three or more convex points and contacts the contact spring 034.

[0027] Example 2:

[0028] On the basis of Example 1, Figure 2 The two first magnetic conductive sheets 031 are fixed on the base 011 , and a pressure plate 033 is provided on the upper side. The pressure plate 033 is connected to the base 011 , and the pressure plate plays an auxiliary role in fixing the first magnetic conductive sheets 031 .

[0029] Example 3:

[0030] On the basis of embodiment 1 or 2, the first magnetic conductive sheet 031 and the second magnetic conductive sheet 032 both adopt a U-shaped structure, or one of the magnetic conductive sheets adopts a flat plate structure to improve the attraction effect.

[0031] Example 4:

[0032] Based on any of the above embodiments, in this embodiment, the second magnetic conductive sheet 032 can be optionally configured to move toward the first magnetic conductive sheet 031 or not move when the contact assembly 022 is actuated. The closer the second magnetic conductive sheet is to the first magnetic conductive sheet, the stronger the attraction, thereby achieving a pressurized contact effect.

[0033] A contactor or a relay. In this solution, a contactor is taken as an example, and the boosting mechanism in any of the above embodiments is provided in the contactor.

[0034] The contactor also includes an auxiliary contact mechanism 081, which is used to monitor the status of the main contacts (i.e., moving and static contacts). The auxiliary contacts can reflect the opening and closing status of the main contacts through the current or signal flowing through them (and can also be connected to indicator lights), thereby monitoring the closing and opening status of the main contacts.

[0035] Specifically, if Figure 3 The auxiliary contact mechanism 081 can be installed on the base 011 and further reinforced by the pressure plate 033. The push rod 023 is the push rod of the electromagnetic system that pushes the moving contact to move. When the push rod 023 is pushed upward, the auxiliary contact is closed. When the push rod 023 is pushed downward, the auxiliary contact is disconnected.

[0036] Since the auxiliary contacts are pushed by the push rod, their closing and opening actions are consistent with the main contacts. The auxiliary contacts can reflect the opening and closing status of the main contacts through the current or signal flowing through them, thereby monitoring the closing and opening status of the main contacts.

[0037] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A boosting mechanism, characterized in that: The invention comprises a first magnetic conductive sheet (031), a second magnetic conductive sheet (032) and a base (011), wherein the first magnetic conductive sheet (031) is fixed on the base (011), and the second magnetic conductive sheet (032) is connected to the moving contact module. When the moving contact module is powered on, the second magnetic conductive sheet (032) is magnetized, and the first magnetic conductive sheet (031) and the second magnetic conductive sheet (032) form an attractive force, exerting pressure on the moving contact module, thereby increasing the contact pressure.

2. The boosting mechanism according to claim 1, characterized in that: The moving contact module comprises a plurality of groups of single-stage contact assemblies (022), and the number of the first magnetic conductive sheets (031) and the second magnetic conductive sheets (032) is the same as the number of the single-stage contact assemblies (022).

3. The boosting mechanism according to claim 1, characterized in that: The second magnetic conductive sheet (032) is fixedly connected to the moving contact by riveting, and limits the contact spring (034) through a convex bump or a concave pit or three or more convex points and contacts the contact spring (034).

4. The boosting mechanism according to claim 1, characterized in that: The second magnetic conductive sheet (032) moves along with the contact assembly toward the first magnetic conductive sheet (031) or does not move.

5. The boosting mechanism according to claim 2, characterized in that: The boosting mechanism further comprises a pressing plate (033), wherein the pressing plate (033) contacts and cooperates with the first magnetic conductive sheet (031) and is used to fix the first magnetic conductive sheet (031).

6. The boosting mechanism according to any one of claims 1 to 5, characterized in that: The first magnetic conductive sheet (031) and the second magnetic conductive sheet (032) both adopt a U-shaped structure or one of them adopts a flat plate structure.

7. A contactor, characterized in that: The invention comprises the boosting mechanism according to any one of claims 1 to 6.

8. The contactor according to claim 7, characterized in that: The contactor also includes an auxiliary contact mechanism (081) for monitoring the status of the main contacts.

9. The contactor according to claim 8, characterized in that: The auxiliary contact mechanism (081) is mounted on the base (011) and fixed by a pressing plate (033).

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