CN109950064B - Contact with grinding function - Google Patents
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- CN109950064B CN109950064B CN201910180428.1A CN201910180428A CN109950064B CN 109950064 B CN109950064 B CN 109950064B CN 201910180428 A CN201910180428 A CN 201910180428A CN 109950064 B CN109950064 B CN 109950064B
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- contact
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- pull rod
- shaped pull
- assembly
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Abstract
The invention discloses a contact with a grinding function, which comprises two oppositely arranged static contact assemblies, an inverted U-shaped pull rod arranged between the two static contact assemblies, and a moving contact assembly arranged between two side surfaces of the inverted U-shaped pull rod, wherein the moving contact assembly is positioned right above the two static contact assemblies, a contact pressure plate spring is also arranged between the upper side surface of the moving contact assembly and the inverted U-shaped pull rod, two side surfaces of the inverted U-shaped pull rod are respectively provided with a strip hole, a connecting shaft is arranged between the two strip holes, and the connecting shaft penetrates through the moving contact assembly. The contact with the grinding function has the advantages of simple and compact structure, small volume, small operating force, small impact energy, small contact bounce in the closing process, large contact pressure and small contact resistance, and the moving contact and the static contact have the grinding function and can be self-cleaned.
Description
Technical Field
The invention belongs to the technical field of low-voltage electrical equipment, and particularly relates to a contact with a grinding function.
Background
The contact structure mainly used for the low-voltage electrical apparatus at present is a formula structure and a bridge structure, the contact process of the contact can not be ground, the contact pressure and the contact surface are small, and the arc dividing capability and the electric stability are poor. Therefore, the contact is easy to burn, the service life is short, the reliability is low, and the maintenance cost is increased.
In view of the above disadvantages of the conventional contact structure, it is necessary to design a contact structure having a grinding function, a large open distance, high electrical stability, and a buffering impact energy.
Disclosure of Invention
The invention aims to provide a contact with a grinding function, which solves the defects that the existing contact has low pressure and can not be ground.
The invention adopts the technical scheme that the contact with the grinding function comprises two oppositely arranged static contact assemblies, an inverted U-shaped pull rod is arranged between the two static contact assemblies, and the contact also comprises a moving contact assembly arranged between two side surfaces of the inverted U-shaped pull rod, wherein the moving contact assembly is positioned right above the two static contact assemblies, a contact pressure plate spring is also arranged between the upper side surface of the moving contact assembly and the inverted U-shaped pull rod, two side surfaces of the inverted U-shaped pull rod are respectively provided with a long hole, a connecting shaft is arranged between the two long holes, and the connecting shaft penetrates through the moving contact assembly.
The present invention is also characterized in that,
the bottom surface of the moving contact component is provided with a moving contact blade at the position contacted with the static contact component, and the upper surface of the static contact component is provided with a static contact blade at the position contacted with the moving contact component.
The shape of the static contact blade and the movable contact blade is any one of rectangle, circle or special shape.
The contact surface of the static contact blade and the movable contact blade is a plane or a cambered surface.
The central line of the long holes along the length direction forms an acute included angle with the horizontal rod direction.
The invention has the beneficial effects that:
the contact with the grinding function has the advantages of small volume and simple and compact structure, overcomes the defects that the existing contact cannot be ground when in contact and has small contact pressure, improves the contact pressure of the contact, increases the contact surface of the contact, and improves the electric stability and the contact reliability of the contact.
Drawings
FIG. 1 is a schematic view of a contact having a grinding function according to the present invention;
FIG. 2 is a schematic view of a pull rod of a contact with grinding function according to the present invention;
FIG. 3 is a schematic view of the initial attraction state of a contact with grinding function according to the present invention;
fig. 4 is a schematic view of a fully closed contact with a grinding function according to the present invention.
In the figure, 1, a static contact assembly, 2, an inverted U-shaped pull rod, 3, a connecting shaft, 4, a moving contact assembly, 5, a contact pressure plate spring, 6, a moving contact piece, 7, a static contact piece and 8, a long hole are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a contact with a grinding function, which comprises two oppositely arranged static contact assemblies 1 as shown in figure 1, wherein an inverted U-shaped pull rod 2 is arranged between the two static contact assemblies 1, the contact also comprises a moving contact assembly 4 arranged between two side surfaces of the inverted U-shaped pull rod 2, the moving contact assembly 4 is positioned right above the two static contact assemblies 1, a contact pressure plate spring 5 is also arranged between the upper side surface of the moving contact assembly 4 and the inverted U-shaped pull rod 2, as shown in figure 2, two side surfaces of the inverted U-shaped pull rod 2 are respectively provided with a strip hole 8, a connecting shaft 3 is arranged between the two strip holes 8, and the connecting shaft 3 penetrates through the moving contact assembly 4; the central line of the long hole 8 along the length direction forms an acute angle with the horizontal rod direction, the moving contact component 4 slides up and down on the pull rod 2 in the shape of an inverted U along with the connecting shaft 3, and the moving contact component 4 can slide to one side when in downward sliding movement because the long hole 8 has a certain inclination angle.
The bottom surface of moving contact subassembly 4 is provided with movable contact piece 6 with the position of stationary contact subassembly 1 contact, and the position of the upper surface of stationary contact subassembly 1 and the contact of moving contact subassembly 4 is provided with stationary contact piece 7.
The shapes of the static contact blade 7 and the movable contact blade 6 are any one of rectangle, circle or special shape, and the preferred shape is rectangle.
The contact surfaces of the static contact blade 7 and the movable contact blade 6 are both planes or cambered surfaces, and the cambered surfaces are preferably cambered surfaces.
According to the contact with the grinding function, in order to avoid damage to the contact component when the moving contact component 4 and the static contact component 1 are in hard contact, the moving contact component 4 needs to be movably connected into the inverted U-shaped pull rod 2, and after the moving contact component 4 is contacted with the static contact component 1, the moving contact component 4 can be ground and buffered so as to be in grinding contact with the static contact component 1. Preferably, the contact pressure plate spring 5 is positioned between the inverted-U-shaped pull rod 2 and the moving contact component 4 and is in contact with the moving contact component 4 and the inverted-U-shaped pull rod 2; the moving contact component 4 is connected with the pull rod 2 in the shape of the inverted U through the connecting shaft 3 and moves up and down along with the pull rod 2 in the shape of the inverted U. The inner side surface of the top of the pull rod 2 in the shape of the inverted U is provided with a boss for clamping the contact pressure plate spring 5.
As shown in fig. 3, which is a schematic diagram of the initial attraction state of the contact with the grinding function of the present invention, when the inverted U-shaped pull rod 2 moves downward, the moving contact assembly 4 is driven to move downward, and when the moving contact pieces 6 at two sides of the moving contact assembly 4 contact with the stationary contact pieces 7 of the two stationary contact assemblies 1, the loop is conducted.
As shown in fig. 4, which is a schematic diagram of a fully closed state of a contact with a grinding function according to the present invention, when an inverted U-shaped pull rod 2 continues to move downward to a predetermined position, at this time, the moving contact assembly 4 does not continue to move downward, the moving contact assembly 4 and two static contact assemblies 1 are in a loop conduction state, but the connecting shaft 3 moves to a predetermined position at the top in an inclined elongated hole slot of the pull rod 2, and simultaneously, the moving contact assembly 4 is driven to slide to one side, and moving contact blades at two sides of the moving contact assembly 4 respectively contact with static contact blades 7 on the two static contact assemblies 1, and are ground and moved for a certain distance.
According to the mode, the contact with the grinding function has the advantages of simple and compact structure, small volume, small operating force, small impact energy, small contact bounce in the closing process, large contact pressure and small contact resistance, and the moving contact and the static contact have the grinding function and can be self-cleaned.
Claims (2)
1. The contact with the grinding function is characterized by comprising two oppositely arranged fixed contact assemblies (1), wherein an inverted U-shaped pull rod (2) is arranged between the two fixed contact assemblies (1), the movable contact assembly (4) is arranged between two side faces of the inverted U-shaped pull rod (2), the movable contact assembly (4) is positioned right above the two fixed contact assemblies (1), a contact pressure plate spring (5) is further arranged between the upper side face of the movable contact assembly (4) and the inverted U-shaped pull rod (2), two side faces of the inverted U-shaped pull rod (2) are respectively provided with a long strip hole (8), a connecting shaft (3) is arranged between the two long strip holes (8), and the connecting shaft (3) penetrates through the movable contact assembly (4);
a movable contact blade (6) is arranged at the position where the bottom surface of the movable contact component (4) is contacted with the fixed contact component (1), and a fixed contact blade (7) is arranged at the position where the upper surface of the fixed contact component (1) is contacted with the movable contact component (4);
the shapes of the static contact blade (7) and the moving contact blade (6) are any one of rectangle, circle or abnormity;
the central line of the long holes (8) along the length direction forms an acute included angle with the horizontal rod direction.
2. A grinding contact according to claim 1, characterized in that the contact surfaces of the stationary contact blade (7) and the movable contact blade (6) are both flat or cambered surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180428.1A CN109950064B (en) | 2019-03-11 | 2019-03-11 | Contact with grinding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180428.1A CN109950064B (en) | 2019-03-11 | 2019-03-11 | Contact with grinding function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109950064A CN109950064A (en) | 2019-06-28 |
| CN109950064B true CN109950064B (en) | 2020-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910180428.1A Active CN109950064B (en) | 2019-03-11 | 2019-03-11 | Contact with grinding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109950064B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015212818A1 (en) * | 2015-07-08 | 2017-01-12 | Te Connectivity Germany Gmbh | Contact bridge arrangement for an electrical switching element |
| CN105679619B (en) * | 2016-03-30 | 2017-11-10 | 上海电科电器科技有限公司 | The connection disjunction mechanism of electric switch |
| CN108091500B (en) * | 2016-11-23 | 2021-05-18 | 浙江正泰电器股份有限公司 | Pressure self-balancing structure of double-breakpoint contact bridge |
| DE102017109210B4 (en) * | 2017-04-28 | 2023-10-12 | Tdk Electronics Ag | relay |
| CN208061879U (en) * | 2018-03-12 | 2018-11-06 | 西安开天铁路电气股份有限公司 | A kind of contact mechanism |
| CN209374283U (en) * | 2019-03-11 | 2019-09-10 | 西安开天铁路电气股份有限公司 | A kind of electrical contact with grinding function |
-
2019
- 2019-03-11 CN CN201910180428.1A patent/CN109950064B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109950064A (en) | 2019-06-28 |
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Effective date of registration: 20211011 Address after: Room 1202, No. 1088, Zhongshan South Road, Huangpu District, Shanghai 200001 Patentee after: Shanghai yingzhenyingtai measurement and Control Technology Co.,Ltd. Address before: No.85, Jinye 1st Road, high tech Zone, Xi'an, Shaanxi 710065 Patentee before: XI'AN KAITIAN RAILWAY ELECTRICAL Co.,Ltd. |