Contact system and contactor

Abstract

The utility model provides a contact system and a contactor, and relates to the technical field of contactors, the contact system comprises a base, a multi-pole moving contact assembly and at least two static contact assemblies; the multi-pole moving contact assembly comprises at least one single-pole moving contact assembly; the monopole moving contact assembly comprises a moving contact, and two ends of the moving contact are provided with at least two moving contacts. The static contact assembly comprises a static contact and a static contact point; the static contact assembly is arranged on the base, the connection position of the moving contact and the moving contact is arranged to be an inclined plane, and the connection position of the static contact and the static contact is arranged to be an inclined plane; the inclined surface guides an arc. The inclined structures are arranged on the moving contact and the static contact, and the inclined direction faces the arc extinguish chamber, so that when the contacts are closed or disconnected, generated electric arcs can rapidly move into the arc extinguish chamber under the action of the inclined structures, and rapid completion of arc extinguish is facilitated; therefore, the strength of the contact seat is enhanced, and the insulation between the two electrodes is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to a contact system and a contactor. Background Art

[0002] In the contactor field, with the rapid development of new energy vehicles, energy storage and other industries, the market volume of high-voltage DC contactors, as key components of these emerging industries, is growing.

[0003] High-voltage DC contactors may generate arcs when closing and opening. Especially when opening, if the strong arc is only struck by an arc-strike plate, it is difficult to quickly introduce the arc into the arc extinguishing chamber, and thus it is impossible to achieve a faster arc extinguishing effect. In response to the above-mentioned defects, this application is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a contact system and a contactor, which realize the auxiliary arc striking effect through the structural design of the moving contact and solve the problem that the arc is difficult to quickly enter the arc extinguishing chamber.

[0005] In order to solve the above problems, the utility model provides a contact system, including a base, a multi-pole moving contact assembly and at least two static contact assemblies; the multi-pole moving contact assembly includes at least one single-pole moving contact assembly; the single-pole moving contact assembly includes a moving contact, and at least two moving contacts are provided at both ends of the moving contact; the static contact assembly includes a static contact and a static contact; the static contact assembly is arranged on the base, and the connection position between the moving contact and the moving contact is provided with an inclined surface, and the connection position between the static contact and the static contact is provided with an inclined surface; the inclined surface is used to guide the arc.

[0006] Optionally, the moving contact adopts a rectangular long strip structure, and the two moving contacts are respectively installed at the two end positions of the moving contact, forming an inclined structure at the two end positions of the moving contact.

[0007] In other embodiments, other shapes such as an elliptical strip or the like may also be used as long as the movable contacts can be installed at intervals.

[0008] According to an embodiment of the present invention, the inclination angles of the two ends of the moving contact are ≤30°.

[0009] According to an embodiment of the present invention, the single-pole moving contact assembly further includes a moving arc-striking piece. The two ends of the moving contact are respectively connected to a moving arc-striking piece. The moving arc-striking piece is located on the outside of the moving contact and is bent downward.

[0010] According to an embodiment of the present invention, the static contact assembly further includes a static arc-striking piece.

[0011] Optionally, the static contact is arranged to be inclined or an inclined surface is arranged on the static contact.

[0012] According to an embodiment of the present invention, the contact system further comprises a contact base, and the contact base is provided with a slot for mounting the movable contact.

[0013] According to one embodiment of the present utility model, at least two groups of single-pole moving contact assemblies are provided, and the two groups of single-pole moving contact assemblies are respectively installed in different slots. A separation structure is provided on the contact seat, and the separation structure is provided between the two slots to ensure insulation between the two levels.

[0014] According to an embodiment of the present invention, the partition structure includes ribs, and the ribs are arranged in several groups, such as 2 to 4 groups.

[0015] According to an embodiment of the present invention, a driving connection structure is provided on the contact seat, which is used to be connected to an actuating member of an electromagnetic system that drives the contact seat to move.

[0016] According to an embodiment of the present invention, the base is provided with a protrusion, and the contact seat is provided with a guide groove, and the protrusion matches the guide groove to ensure the running track of the contact seat.

[0017] A contactor or relay comprises the above-mentioned contact system and arc extinguishing chambers, wherein the arc extinguishing chambers are arranged on both sides of the moving contact, and the moving contact and the static contact are inclined towards the arc extinguishing chambers on both sides.

[0018] The beneficial effect of the present invention is that, by arranging an inclined structure on the moving contact and the static contact, with the inclined direction facing the arc extinguishing chamber, when the contacts are closed or opened, the generated arc can quickly move to the arc extinguishing chamber under the action of the inclined structure, which is conducive to the rapid completion of arc extinguishing, and, by arranging a separation structure composed of multiple ribs on the contact seat, the strength of the contact seat is enhanced while the insulation between the two poles is guaranteed; in addition, in this solution, the moving contact is arranged to have a bridge-type double-breakpoint structure, so that the contact load capacity is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the contactor;

[0021] Figure 2 is a structural diagram of the contact system;

[0022] Figure 3 Schematic diagram of the structure of the moving contact assembly;

[0023] Figure 4 It is a structural diagram of the contact seat;

[0024] Figure 5It is a structural diagram of the moving contact assembly and the static contact assembly when in contact;

[0025] Figure 6 It is a schematic diagram of the matching structure of the contact seat and the base. DETAILED DESCRIPTION

[0026] 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.

[0027] [Example 1]

[0028] Contact systems such as Figure 2-Figure 4 , which can be applicable to a contactor or a relay, includes a moving contact assembly 012 and a static contact assembly 013.

[0029] The moving contact assembly includes a single-pole moving contact assembly 022 and a contact base 021, wherein the number of single-pole moving contact assemblies 022 is the number of poles of the single-pole or multi-pole contactor. In this embodiment, at least two groups of single-pole moving contact assemblies 022 are provided to form a multi-stage moving contact assembly.

[0030] like Figure 2 The single-pole moving contact assembly 022 includes a moving contact 041, a moving contact point 042 and a moving arc-striking piece 043. The moving contact 041 adopts a rectangular long strip structure. The two moving contacts 042 are respectively installed at the two ends of the moving contact 041 to form a bridge-type double-breakpoint structure, which doubles the contact opening distance.

[0031] The connection position between the moving contact 041 and the moving contact point 042 is tilted, and the tilt direction is toward the arc extinguishing chamber on both sides, with the end thereof being the lowest point. The tilted moving contact 041 is used to guide the arc.

[0032] In this embodiment, the inclination angles of both ends of the moving contact 041 are ≤30°.

[0033] The two ends of the moving contact 041 are respectively connected to a moving arc-striking piece 043 . The moving arc-striking piece 043 is located outside the moving contact 042 and is bent toward the arc extinguishing chamber 003 .

[0034] like Figure 3The contact base 021 is preferably made of plastic or other polymer materials. The contact base 021 is provided with a card slot 0213 for installing the moving contact 041. The card slot 0213 is symmetrically arranged on the contact base 021. The moving contact 041 is fixed in the card slot 0213 by means of a snap. A separation structure is provided on the contact base 021. The separation structure is arranged between two card slots 0213. In this embodiment, the separation structure includes three ribs 0212. There is a gap between adjacent ribs 0212. The multi-layer ribs 0212 strengthen the strength of the contact base 021 while ensuring insulation between the two poles.

[0035] A driving connection structure 0211 is provided on the rib plate 0212 . In this embodiment, a hollow cylinder is used to connect to a push rod 023 of an electromagnetic system that drives the contact base 021 to move.

[0036] like Figure 4 The static contact assembly is installed on the base 011, and two groups are correspondingly arranged, including a static contact 044, a static contact point 045 and a static arc-striking piece 046. The static contact 044 has an inclined surface, and the inclination direction is the same as that of the moving contact 041, and is also inclined toward the arc-striking chamber.

[0037] The left static contact 044 is inclined at a certain angle 0400 toward the left arc extinguishing chamber, and the right static contact is inclined at an angle 0401 toward the right arc extinguishing chamber; the static contact and one end of the moving contact are arranged in pairs; when the contacts are closed and opened, especially when opened, the arc is directed toward the inside of the arc extinguishing chamber, which is conducive to arc extinguishing.

[0038] The above-mentioned angles 0400 and 0401 are preferably the same as the inclination angles at both ends of the moving contact 041.

[0039] like Figure 6 The base 011 is provided with a protrusion 0113, and the contact seat 021 is provided with a guide groove 0215. The protrusion 0113 matches the guide groove 0215 to ensure the running track of the contact seat.

[0040] A contactor or relay, in this embodiment, a contactor is taken as an example, such as Figure 1 , including an upper cover 004, a lower cover 005, an arc extinguishing chamber 003, an electromagnetic system 001 and a contact system 002. The arc extinguishing chambers are arranged on both sides of the moving contact 041, and the inclination directions of the moving contact 041 and the static contact 044 are toward the arc extinguishing chambers on both sides.

[0041] 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 contact system, characterized in that: The invention comprises a base (011), a moving contact assembly and at least two stationary contact assemblies (013); the moving contact assembly comprises at least one single-pole moving contact assembly (022); the single-pole moving contact assembly (022) comprises a moving contact (041), and at least two moving contacts (042) are provided at both ends of the moving contact (041); the stationary contact assembly (013) comprises a stationary contact (044) and a stationary contact (045); the stationary contact assembly (013) is provided on the base (011), an inclined surface is provided at a connection position between the moving contact (041) and the moving contact (042), and an inclined surface is provided at a connection position between the stationary contact (044) and the stationary contact (045); the inclined surface is used to guide an arc.

2. The contact system according to claim 1, wherein: The two moving contacts (042) are respectively installed at the two end positions of the moving contact (041), forming an inclined structure at the two end positions of the moving contact (041).

3. The contact system according to claim 1, wherein: The inclination angles of both ends of the moving contact (041) are ≤30°.

4. The contact system according to claim 1, wherein: The single-pole moving contact assembly (022) further comprises a moving arc-striking piece (043), and two ends of the moving contact (041) are respectively connected to a moving arc-striking piece (043).

5. The contact system according to claim 1, wherein: The contact system further comprises a contact seat (021), wherein a slot (0213) for mounting a moving contact (041) is provided on the contact seat (021).

6. The contact system according to claim 5, characterized in that: At least two groups of the single-pole moving contact assemblies (022) are provided, and the two groups of the single-pole moving contact assemblies (022) are respectively installed in different slots (0213). A separation structure is provided on the contact seat (021), and the separation structure is provided between the two slots (0213).

7. The contact system according to claim 6, characterized in that: The partition structure comprises rib plates (0212), and the rib plates (0212) are arranged in a plurality of groups.

8. The contact system according to any one of claims 5 to 7, characterized in that: A drive connection structure (0211) is provided on the contact seat (021).

9. The contact system according to claim 6 or 7, characterized in that: The base (011) is provided with a protrusion (0113), and the contact seat (021) is provided with a guide groove (0215). The protrusion (0113) matches the guide groove (0215) to ensure the running track of the contact seat.

10. A contactor, characterized in that: The invention comprises a contact system and an arc extinguishing chamber (003) as claimed in any one of claims 1 to 9, wherein the arc extinguishing chamber (003) is provided on both sides of a moving contact (041), and both ends of the moving contact (041) are inclined toward the arc extinguishing chambers on both sides.

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