Electromagnetic contactor with mechanical linkage mechanism

Abstract

The utility model discloses an electromagnetic contactor with mechanical linkage mechanisms, which is characterized in that an armature and a coil are arranged in the electromagnetic contactor, the armature is connected with a contact support, the coil is connected with a conversion contact, and a plurality of groups of mechanical linkage mechanisms are further arranged in the electromagnetic contactor. The mechanical linkage mechanism is respectively clamped with the armature and the contact support; each mechanical linkage mechanism comprises a sickle-shaped interlocking piece and a C-shaped interlocking piece which are connected in a one-to-one mode, and the adjacent mechanical linkage mechanisms are connected through a linkage rod. On the basis of a two-pole contactor, modular combination and connection are realized, and a built-in mechanical linkage mechanism realizes expansion of a four-pole or even multi-pole contactor, so that the purpose of expanding the pole number of a small-sized contactor is achieved. Through the interlocking principle of a mechanical linkage mechanism, the linkage of the action of the contactor is realized, and the synchronism and consistency of the on-off of the contacts of a four-pole or even multi-pole contactor are achieved, so that the overall reliability of the expanded contactor is improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic contactors, specifically to an electromagnetic contactor with a mechanical linkage mechanism. Background Technology

[0002] Electromagnetic contactors are among the most widely used electrical components in electrical automation control systems, and their safety and stability are crucial for the reliable operation of these systems. Currently, in the domestic low-voltage electrical industry, expanding the number of poles in small contactors used in household and similar applications requires a completely new design and re-molding of all parts to achieve the effect of a two-pole, four-pole, or even multi-pole contactor, resulting in high production costs. Furthermore, with the increase in the number of poles, the design and manufacturing of contactors face even higher technical requirements. While optimizing and upgrading accordingly, it is also necessary to ensure the reliability of the electromagnetic mechanism, the durability of the contact system, and the effectiveness of the arc-extinguishing device, significantly increasing the difficulty of expanding the number of poles in electromagnetic contactors. Utility Model Content

[0003] This utility model provides an electromagnetic contactor with a mechanical linkage mechanism, which aims to solve the problem that when expanding the number of stages based on the existing two-stage contactor, a completely new design and new molding of all parts are required, resulting in high production costs and great difficulty in expansion.

[0004] To achieve its purpose, this utility model adopts the following technical solution:

[0005] An electromagnetic contactor with a mechanical linkage mechanism is provided. The electromagnetic contactor has an armature and a coil. A contact bracket is connected to the armature, and a changeover contact is connected to the coil. The electromagnetic contactor also has several sets of mechanical linkage mechanisms, which are respectively engaged with the armature and the contact bracket. The mechanical linkage mechanism includes a sickle-shaped interlocking element and a C-shaped interlocking element that are connected one-to-one. Adjacent sets of mechanical linkage mechanisms are connected by a linkage rod.

[0006] Furthermore, the sickle-shaped interlocking component includes an inverted L-shaped first connecting plate, with a first connecting part vertically connected to the outer side of the longitudinal portion of the first connecting plate, and a sickle-shaped hooking part connected to the inner side of the longitudinal portion of the first connecting plate, and a hook provided at the bottom of the longitudinal portion; a dovetail boss is provided on the inner side of the horizontal portion of the first connecting plate, and a bidirectional guide positioning groove is provided on the side of the inner cavity of the first connecting plate near the sickle-shaped hooking part.

[0007] Furthermore, the C-type interlocking component includes a 7-shaped second connecting plate, with a second connecting part vertically connected to the outer side of the longitudinal portion of the second connecting plate, and a C-shaped hook-on portion provided at the end of the longitudinal portion of the second connecting plate; a dovetail groove adapted to the dovetail boss is provided on the outer side of the horizontal portion of the second connecting plate, and a receiving window is provided in the inner cavity of the second connecting plate.

[0008] Furthermore, both the first connecting part and the second connecting part are cylindrical structures with openings, and the two ends of the linkage rod are respectively inserted into the openings of the first connecting part and the second connecting part to connect the mechanical linkage mechanisms of adjacent groups.

[0009] Furthermore, the sickle-shaped interlocking component is installed downward along the contact bracket via a bidirectional guide positioning groove until the bottom hook is attached to the contact bracket, and the sickle-shaped attachment part is attached to the changeover contact on the coil.

[0010] Furthermore, the C-type interlocking component is attached to the contact support through the receiving window. After the armature is inserted into the C-type attachment, the C-type interlocking component, the contact support, and the armature become an integral movable part that moves synchronously.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model provides an electromagnetic contactor with a mechanical linkage mechanism. Based on a two-pole contactor, it is modularly combined and connected, and through the built-in mechanical linkage mechanism, it can be expanded into a four-pole or even multi-pole contactor, thereby increasing the number of poles of a small contactor. Through the interlocking principle of the mechanical linkage mechanism, the contactor's operation is synchronized, achieving synchronicity and consistency in the opening and closing of the contacts of four-pole or even multi-pole contactors, thus improving the overall reliability of the expanded contactor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the electromagnetic contactor with a mechanical linkage mechanism according to this utility model.

[0014] Figure 2 This is a schematic diagram of the connection structure of the sickle-shaped interlocking component, the C-shaped interlocking component, and the linkage rod of this utility model;

[0015] Figure 3 This is a schematic diagram of the sickle-shaped interlocking component of this utility model;

[0016] Figure 4 This is a schematic diagram of the sickle-shaped interlocking component of this utility model from another angle.

[0017] Figure 5 This is a schematic diagram of the C-type interlocking component of this utility model;

[0018] In the diagram: 1-Sickle-shaped interlocking component; 2-C-type interlocking component; 3-Linkage rod; 4-Contact bracket; 5-Armature; 6-Coil; 7-Change contact; 101-First connecting part; 102-Hook; 103-Sickle-shaped hook; 104-Dovetail boss; 105-Two-way guide positioning groove; 106-First connecting plate; 201-Second connecting part; 202-Dovetail groove; 203-Accommodation window; 204-C-type hook; 205-Second connecting plate. Detailed Implementation

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

[0020] like Figure 1-5 As shown, this utility model is an electromagnetic contactor with a mechanical linkage mechanism. The electromagnetic contactor has an armature 5 and a coil 6. A contact support 4 is connected to the armature 5, and a changeover contact 7 is connected to the coil 6. The electromagnetic contactor also has two sets of mechanical linkage mechanisms, which are respectively engaged with the armature 5 and the contact support 4. The mechanical linkage mechanism includes a sickle-shaped interlocking member 1 and a C-shaped interlocking member 2 that are connected one-to-one.

[0021] The sickle-shaped interlocking component 1 includes an inverted L-shaped first connecting plate 106. A first connecting part 101 is vertically connected to the outer side of the longitudinal part of the first connecting plate 106, and a sickle-shaped hook part 103 is connected to the inner side of the longitudinal part of the first connecting plate 106. A hook 102 is provided at the bottom of the longitudinal part. A dovetail boss 104 is provided on the inner side of the horizontal part of the first connecting plate 106, and a bidirectional guide positioning groove 105 is provided on the side of the inner cavity of the first connecting plate 106 near the sickle-shaped hook part 103.

[0022] The C-type interlocking component 2 includes a 7-shaped second connecting plate 205, a second connecting part 201 vertically connected to the outer side of the longitudinal part of the second connecting plate 205, and a C-shaped hook part 204 provided at the end of the longitudinal part of the second connecting plate 205; a dovetail groove 202 adapted to the dovetail boss 104 is provided on the outer side of the horizontal part of the second connecting plate 205, and a receiving window 203 is provided in the inner cavity of the second connecting plate 205.

[0023] The first connecting part 101 and the second connecting part 201 are both cylindrical structures with openings. The two ends of the linkage rod 3 are respectively inserted into the openings of the first connecting part 101 and the second connecting part 201 to connect the mechanical linkage mechanisms of adjacent groups.

[0024] During installation, the sickle-shaped interlocking component 1 is aligned and installed downwards along the contact bracket 4 via the bidirectional guide positioning groove 105. During installation, the dovetail boss 104 of the sickle-shaped interlocking component 1 is aligned with the dovetail groove (202) of the C-type interlocking component 2, and simultaneously pushed downwards until the bottom hook 102 of the sickle-shaped interlocking component 1 is hooked onto the contact bracket 4, and the sickle-shaped hooking part 103 is hooked onto the switching contact 7 on the coil 6 with a gap. This is to allow sufficient distance for switching from the coil to the holding coil during the contactor's engagement process. The C-type interlocking component 2 is hooked onto the contact bracket 4 via the receiving window 203. After the armature 5 is inserted into the C-type hooking part 204, the C-type interlocking component 2, the contact bracket 4, and the armature 5 become a single movable part that moves synchronously. Finally, the mechanical linkage mechanisms of adjacent groups are connected via the linkage rod 3, and after being snapped in place, they are put into use to realize the function of a four-stage contactor. When a multi-stage contactor is required, a mechanical linkage mechanism can be added as needed.

Claims

1. An electromagnetic contactor with a mechanical linkage mechanism, wherein the electromagnetic contactor is provided with an armature (5) and a coil (6), a contact support (4) is connected to the armature (5), and a changeover contact (7) is connected to the coil (6), characterized in that: The electromagnetic contactor is also provided with several sets of mechanical linkage mechanisms, which are respectively engaged with the armature (5) and the contact bracket (4); the mechanical linkage mechanism includes a sickle-shaped interlocking member (1) and a C-shaped interlocking member (2) connected one-to-one, and adjacent sets of mechanical linkage mechanisms are connected by a linkage rod (3).

2. An electromagnetic contactor with a mechanical linkage mechanism as described in claim 1, characterized in that: The sickle-shaped interlocking component (1) includes an inverted L-shaped first connecting plate (106), with a first connecting part (101) vertically connected to the outer side of the longitudinal part of the first connecting plate (106), and a sickle-shaped hook part (103) connected to the inner side of the longitudinal part of the first connecting plate (106), and a hook (102) provided at the bottom of the longitudinal part; a dovetail boss (104) is provided on the inner side of the horizontal part of the first connecting plate (106), and a bidirectional guide positioning groove (105) is provided on the side of the inner cavity of the first connecting plate (106) near the sickle-shaped hook part (103).

3. An electromagnetic contactor with a mechanical linkage mechanism as described in claim 2, characterized in that: The C-type interlocking component (2) includes a 7-shaped second connecting plate (205), a second connecting part (201) is vertically connected to the outer side of the longitudinal part of the second connecting plate (205), and a C-shaped hook part (204) is provided at the end of the longitudinal part of the second connecting plate (205); a dovetail groove (202) adapted to the dovetail boss (104) is provided on the outer side of the horizontal part of the second connecting plate (205), and a receiving window (203) is provided in the inner cavity of the second connecting plate (205).

4. An electromagnetic contactor with a mechanical linkage mechanism as described in claim 3, characterized in that: The first connecting part (101) and the second connecting part (201) are both cylindrical structures with openings. The two ends of the linkage rod (3) are respectively inserted into the openings of the first connecting part (101) and the second connecting part (201) to connect the mechanical linkage mechanisms of adjacent groups.

5. An electromagnetic contactor with a mechanical linkage mechanism as described in claim 4, characterized in that: The sickle-shaped interlocking component (1) is installed downward along the contact bracket (4) through the bidirectional guide positioning groove (105) until the bottom hook (102) is hooked on the contact bracket (4), and the sickle-shaped hook part (103) is hooked on the change contact (7) on the coil (6).

6. An electromagnetic contactor with a mechanical linkage mechanism as described in claim 5, characterized in that: The C-type interlocking component (2) is attached to the contact support (4) through the receiving window (203). After the armature (5) is inserted into the C-type attachment (204), the C-type interlocking component (2), the contact support (4) and the armature (5) become an integral movable part and move synchronously.

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