Reliable contact structure of moving and static contacts

Abstract

The utility model belongs to the technical field of vacuum circuit breakers, and particularly relates to a reliable contact structure for moving and static contacts, which comprises a fixed seat, a connecting seat and a moving contact. According to the reliable contact structure of the moving contact and the static contact, the contact mechanism is additionally arranged on the outer surface wall of the lead screw, so that abrasion and deformation of the lead screw and the static contact are reduced, the propelling distance of the lead screw and the static contact reaches 200 mm, the contact efficiency is improved, and the problems that in the prior art, due to deformation of a propelling mechanism, the propelling distance of an original design is 200 mm, and the contact efficiency is low in the prior art are solved. The problems that a moving contact and a static contact are meshed on an inclined plane and cannot be reliably contacted due to the fact that a lead screw deforms and is abraded after being used for a long time and the actual propelling distance is only 190 mm or so are solved, the contact stability of the static contact can be improved through a contact mechanism, other mechanical mechanisms can operate more accurately in the operation process, the machining efficiency of products is improved, and the production cost is reduced. And the device is simple in structure and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a reliable contact structure of moving and static contacts. Background Art

[0002] In actual use, the most common fault of contactors is contact damage, so the key to improving their reliability lies in how to extend the service life of the contacts.

[0003] At present, the industry's common contactor contact docking adopts a spherical surface to spherical surface structure, the two docking is spherical surface to spherical surface, and the diameters of the moving and static contacts are consistent. In addition, due to the deformation of the propulsion mechanism in the prior art, the original design propulsion distance is 200mm. Due to the deformation of the lead screw and the wear of long-term use, the actual propulsion distance is only about 190mm, so that the moving and static contacts are engaged on the inclined surface and cannot be reliably contacted.

[0004] Therefore, we urgently need to provide a reliable contact structure for moving and static contacts. Utility Model Content

[0005] The purpose of the utility model is to provide a reliable contact structure for moving and static contacts, so as to solve the problem in the prior art proposed in the above background technology that due to the deformation of the propulsion mechanism, the original design propulsion distance is 200mm, but due to the deformation of the lead screw and the wear of long-term use, the actual propulsion distance is only about 190mm, so that the moving and static contacts are engaged on the inclined surface and cannot be reliably contacted.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reliable contact structure for moving and static contacts, comprising a fixed seat, a connecting seat and a moving contact, the connecting seat is installed on the side of the fixed seat, the moving contact is installed on the side of the connecting seat, the side of the fixed seat is provided with a static contact, the side of the fixed seat is provided with an upper contact plate and a lower contact plate, the inner sides of the upper contact plate and the lower contact plate are provided with stabilizing parts, the outer walls of the upper contact plate and the lower contact plate are provided with connecting frames, the top and bottom ends of the connecting frame are connected with fastening bolts, and the inner sides of the upper contact plate and the lower contact plate are provided with abutments.

[0007] Preferably, the moving contact is used in conjunction with the inner cavity formed by the upper contact plate and the lower contact plate, thereby playing a stabilizing role. The stabilizing members are symmetrically distributed on the inner sides of the upper contact plate and the lower contact plate, thereby improving the contact stability.

[0008] Preferably, the connection frame is fixed to the upper contact plate and the lower contact plate by fastening bolts, thereby facilitating installation and disassembly of the connection frame and improving stability and firmness. The fastening bolts are symmetrically distributed in pairs, thereby improving the fixing efficiency of the connection frame.

[0009] Preferably, the abutments are symmetrically distributed on the upper and lower sides of the static contact, and the outer walls of the abutments abut against the upper and lower sides of the static contact, thereby further improving the contact stability of the device.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The movable and static contacts have a reliable contact structure. The contact mechanism is added to the outer wall of the lead screw to reduce the wear and deformation of the lead screw and the static contact, thereby increasing the propulsion distance to 200 mm, thereby improving the contact efficiency. This solves the problem in the prior art proposed in the background technology that due to the deformation of the propulsion mechanism, the original design propulsion distance is 200 mm, but due to the deformation of the lead screw and the wear due to long-term use, the actual propulsion distance is only about 190 mm, causing the movable and static contacts to mesh on the inclined surface and fail to make reliable contact.

[0012] 2. The moving and static contacts have a reliable contact structure, and the contact stability of the static contacts can be improved through the contact mechanism, so that other mechanical mechanisms can operate more accurately during operation. In addition, the device has a simple structure and is relatively easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0014] Figure 2 It is a side view structural schematic diagram of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the other side of the utility model;

[0016] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0017] In the figure: 1. fixing seat; 2. connecting seat; 3. moving contact; 4. static contact; 5. upper contact plate; 6. lower contact plate; 7. stabilizing member; 8. connecting frame; 9. fastening bolt; 10. abutment. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0020] Embodiment 1:

[0021] A reliable contact structure for moving and static contacts, comprising a fixed seat 1, a connecting seat 2 and a moving contact 3, wherein the connecting seat 2 is mounted on the side of the fixed seat 1, the moving contact 3 is mounted on the side of the connecting seat 2, the moving contact 3 is used in conjunction with an inner cavity formed by an upper contact plate 5 and a lower contact plate 6, thereby playing a stabilizing role, a static contact 4 is arranged on the side of the fixed seat 1, an upper contact plate 5 and a lower contact plate 6 are arranged on the side of the fixed seat 1, a stabilizing member 7 is installed on the inner side of the upper contact plate 5 and the lower contact plate 6, the stabilizing member 7 is symmetrically distributed on the inner side of the upper contact plate 5 and the lower contact plate 6, thereby improving the contact stability, the upper contact plate 5 and A connecting frame 8 is provided on the outer wall of the lower contact plate 6, and the connecting frame 8 is fixed to the upper contact plate 5 and the lower contact plate 6 by fastening bolts 9, which facilitates the installation and disassembly of the connecting frame 8 and also improves the stability and firmness. The top and bottom ends of the connecting frame 8 are connected with fastening bolts 9, and the fastening bolts 9 are symmetrically distributed in pairs, thereby improving the fixing efficiency of the connecting frame 8. Abutments 10 are installed on the inner sides of the upper contact plate 5 and the lower contact plate 6, and the abutments 10 are symmetrically distributed on the upper and lower sides of the static contact 4, and the outer walls of the abutments 10 abut against the upper and lower sides of the static contact 4, thereby further improving the contact stability of the device.

[0022] When in use, the moving contact 3 is inserted into the space between the upper contact plate 5 and the lower contact plate 6. Under the contact with the stabilizing member 7, it can provide a certain stability, and the upper contact plate 5 and the lower contact plate 6 are fixed to the connecting frame 8 by the fastening bolt 9. The static contact 4 is inserted into the space formed by the other end of the upper contact plate 5 and the lower contact plate 6. The abutment 10 can also play a certain stabilizing role, thereby improving the stability and reliability of the entire device.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A reliable contact structure for moving and static contacts, comprising a fixed seat (1), a connecting seat (2) and a moving contact (3), wherein the connecting seat (2) is mounted on a side of the fixed seat (1), and the moving contact (3) is mounted on a side of the connecting seat (2), characterized in that: A static contact (4) is arranged on the side of the fixing seat (1), an upper contact plate (5) and a lower contact plate (6) are arranged on the side of the fixing seat (1), a stabilizing member (7) is installed on the inner side of the upper contact plate (5) and the lower contact plate (6), a connecting frame (8) is arranged on the outer wall of the upper contact plate (5) and the lower contact plate (6), a fastening bolt (9) is connected to the top and bottom ends of the connecting frame (8), and a resist (10) is installed on the inner side of the upper contact plate (5) and the lower contact plate (6).

2. A reliable contact structure for moving and static contacts according to claim 1, characterized in that: The moving contact (3) is used in conjunction with an inner cavity formed by an upper contact plate (5) and a lower contact plate (6), and the stabilizing member (7) is symmetrically distributed on the inner sides of the upper contact plate (5) and the lower contact plate (6).

3. The reliable contact structure of moving and static contacts according to claim 1, characterized in that: The connection frame (8) is fixed to the upper contact plate (5) and the lower contact plate (6) via fastening bolts (9), and the fastening bolts (9) are symmetrically distributed in pairs.

4. The reliable contact structure of moving and static contacts according to claim 1, characterized in that: The abutment member (10) is symmetrically distributed on the upper and lower sides of the stationary contact (4), and the outer wall of the abutment member (10) abuts against the upper and lower sides of the stationary contact (4).

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