CN214624910U

CN214624910U - Movable contact spring installation component of high-voltage direct-current contactor

Info

Publication number: CN214624910U
Application number: CN202023341427.8U
Authority: CN
Inventors: 刘士杰
Original assignee: Changzhou Jishi Electric Appliance Co ltd
Current assignee: Changzhou Jishi Electric Appliance Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-05
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a movable contact spring mounting component of a high-voltage direct-current contactor, which comprises a push rod, an insulating bracket connected with the upper end of the push rod, a movable contact spring connected with the insulating bracket, a movable contact spring arranged between the movable contact spring and the insulating bracket, and a stationary contact arranged at the top of the movable contact spring and opposite to the stationary contact; the moving plate connecting rod comprises a top plate and a side plate, the lower part of the side plate is fixedly connected with the insulating support, the upper part of the side plate is fixedly connected with the top plate, and the bottom of the top plate is provided with a bulge; the top of movable contact spring and the protruding relative position of arch have seted up the cartridge hole, protruding cartridge in cartridge hole and protruding and cartridge hole between clearance fit, the top and the tracking spring elasticity butt of movable contact spring for the control is protruding to be located the cartridge hole all the time. The present case can realize the stability of movable contact spring in the horizontal direction, and then prevents that the movable contact spring from taking place the skew together with the movable contact of installing at the movable contact spring top, guarantees the stability of movable contact and stationary contact point contact resistance.

Description

Movable contact spring installation component of high-voltage direct-current contactor

Technical Field

The utility model belongs to the technical field of high voltage direct current contactor, specifically be a high voltage direct current contactor's movable contact spring installation component.

Background

The high-voltage direct-current contactor can be used for rapidly and frequently switching on and off a high-current control circuit, is often applied to control of a motor, and can also be used for controlling electric loads of factory equipment, an electric heater, a working machine, various electric power units and the like, and the contactor not only can switch on and off the circuit, but also has a low-voltage release protection effect. The contactor has large control capacity, is suitable for frequent operation and remote control, and is one of important elements in an automatic control system. The working principle is as follows: after the coil is powered on, a magnetic field is generated, the generated magnetic field enables the static iron core arranged at the top of the framework to generate electromagnetic attraction to attract the movable iron core on the push rod iron core assembly, the movable iron core moves towards the static iron core, and then the push rod iron core assembly is driven to enable the movable contact to move upwards to be in contact with the static contact. However, in the prior art, due to the structural limitation of the movable contact piece mounting assembly, the limiting effect on the movable contact piece is not strong, so that the movable contact piece deflects and cannot be effectively contacted with the static contact piece, and then a short circuit is formed inside the contactor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a high voltage direct current contactor's movable contact spring installation component.

In order to realize the purpose, the utility model discloses a technical scheme is: a movable contact piece mounting assembly of a high-voltage direct-current contactor comprises a push rod, an insulating support connected with the upper end of the push rod, a movable contact piece connecting rod connected with the insulating support, a movable contact piece connected with the movable contact piece connecting rod, a tracking spring arranged between the movable contact piece and the insulating support and a fixed contact arranged at the top of the movable contact piece and opposite to a fixed contact of the high-voltage direct-current contactor; the moving plate connecting rod comprises a top plate and a side plate, the lower part of the side plate is fixedly connected with the insulating support, the upper part of the side plate is fixedly connected with the top plate, and the bottom of the top plate is provided with a bulge; the movable contact spring is characterized in that the top of the movable contact spring is opposite to the protrusion, an insertion hole is formed in the position, opposite to the protrusion, of the top of the movable contact spring, the protrusion is inserted into the insertion hole and is in clearance fit with the insertion hole, and the top of the movable contact spring is elastically abutted to the tracking spring and used for controlling the protrusion to be located in the insertion hole all the time.

Furthermore, the bottom of the movable contact spring is provided with a positioning column corresponding to the tracking spring, and the upper part of the tracking spring is sleeved on the positioning column and is limited by the positioning column in the radial direction.

Furthermore, a spring guide hole is formed in the top of the insulating support, the lower portion of the tracking spring is located in the spring guide hole, the bottom of the tracking spring is connected with the bottom of the spring guide hole, and the tracking spring is limited in the radial direction by a positioning hole.

Compared with the prior art, the utility model discloses the technological effect who gains does: the utility model discloses at first through insulating support with moving contact connecting rod and push rod fixed connection, the protruding cartridge that sets up on the rethread moving contact connecting rod realizes the moving contact in the stability of horizontal direction in the mounting hole at moving contact top, and then prevents that the moving contact from taking place the skew together with the moving contact of installing at moving contact top to guarantee the accurate contact of moving contact and stationary contact and contact resistance's stability.

Drawings

Fig. 1 is a schematic structural diagram of a moving contact mounting assembly of a high-voltage direct-current contactor according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is a schematic connection diagram of the push rod, the moving plate connecting rod and the insulating support of the moving contact mounting assembly of the high-voltage direct-current contactor according to the embodiment of the present invention.

The reference numbers in the figures are: 1. the coil comprises a yoke iron sleeve, 2 a coil framework, 3 a static iron core, 4 a static contact seat, 401 a cavity, 402 a notch, 5 a static contact, 6 an arc extinguishing cover, 7 magnetic steel, 8 a supporting frame, 801 a bottom plate, 802 a positioning frame, 803 a vertical plate, 804 a convex part, 9 a push rod, 10 a movable contact, 11 a movable iron core, 12 a second through hole, 13 an insulating support, 14 a rectangular guide column, 15 a movable contact, 1501 a positioning column, 16 a movable contact connecting rod, 1601 a protrusion, 1602 a side plate, 1603 a top plate, 17 an insertion hole and 18 a tracking spring.

Detailed Description

The utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The specific embodiment of the present invention is shown in fig. 1 to 3, a moving contact mounting assembly of a high voltage direct current contactor, which comprises a push rod 9, an insulating support 13 connected with the upper end of the push rod 9, a moving contact connecting rod 16 connected with the insulating support 13, a moving contact 15 connected with the moving contact connecting rod 16, a tracking spring 18 arranged between the moving contact 15 and the insulating support, and a fixed contact arranged on the top of the moving contact 15 and opposite to the fixed contact of the high voltage direct current contactor; the moving plate connecting rod 16 comprises a top plate 1603 and a side plate 1602, the lower part of the side plate 1602 is fixedly connected with the insulating support, the upper part of the side plate 1602 is fixedly connected with the top plate 1603, and a protrusion 1601 is arranged at the bottom of the top plate 1603; the top of movable contact 15 and protruding 1601 relative position have seted up cartridge hole 17, protruding 1601 cartridge in cartridge hole 17 and protruding 1601 clearance fit between cartridge hole 17, the top of movable contact 15 and the elasticity butt of tracking spring 18 for control protruding 1601 is located cartridge hole 17 all the time.

The bottom of movable contact 15 is equipped with reference column 1501 corresponding to tracking spring 18, and the upper portion of tracking spring 18 overlaps on reference column 1501 and is radially spacing by reference column 1501.

The top of the insulating support is provided with a spring guide hole, the lower part of the tracking spring 18 is positioned in the spring guide hole, the bottom of the tracking spring 18 is connected with the bottom of the spring guide hole, and the radial direction of the tracking spring 18 is limited by a positioning hole. The spring guide hole, the tracking spring 18, the insertion hole 17 and the protrusion 1601 are vertically and coaxially arranged, and the center of gravity of the movable contact piece 15 is located on the central axis of the insertion hole 17, so that the movable contact piece can have a limiting and guiding effect on the tracking spring, and the tracking spring is prevented from being bent or deflected. The tracking spring 18 has a supporting function for the moving contact piece on one hand, and has a certain recoil function at the moment when the moving contact is in contact with the fixed contact conveniently on the other hand, thereby preventing the damage to the high-voltage direct-current contactor and prolonging the service life of the high-voltage direct-current contactor.

In this embodiment, the movable contact piece connecting rod 16 is first fixedly connected with the push rod through the insulating support, and then the protrusion 1601 arranged on the movable contact piece connecting rod 16 is inserted into the mounting hole at the top of the movable contact piece 15, so as to realize the stability of the movable contact piece 15 in the horizontal direction, and further prevent the movable contact piece 15 from deviating together with the movable contact mounted at the top of the movable contact piece 15, thereby ensuring the accurate contact between the movable contact piece and the stationary contact and the stability of the contact resistance.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. A movable contact piece mounting assembly of a high-voltage direct-current contactor is characterized by comprising a push rod (9), an insulating support (13) connected with the upper end of the push rod (9), a movable contact piece connecting rod (16) connected with the insulating support (13), a movable contact piece (15) connected with the movable contact piece connecting rod (16), a tracking spring (18) arranged between the movable contact piece (15) and the insulating support, and a fixed contact arranged at the top of the movable contact piece (15) and opposite to a fixed contact of the high-voltage direct-current contactor; the moving plate connecting rod (16) comprises a top plate (1603) and a side plate (1602), the lower portion of the side plate (1602) is fixedly connected with the insulating support (13), the upper portion of the side plate (1602) is fixedly connected with the top plate (1603), and a protrusion (1601) is arranged at the bottom of the top plate (1603); the top of movable contact piece (15) with the relative position of arch (1601) has seted up cartridge hole (17), protruding (1601) cartridge is in cartridge hole (17) and clearance fit between arch (1601) and cartridge hole (17), the top and the tracking spring (18) elasticity butt of movable contact piece (15) for control arch (1601) is located cartridge hole (17) all the time.

2. A moving contact mounting assembly for a high voltage dc contactor according to claim 1, wherein: the bottom of the movable contact spring (15) is provided with a positioning column (1501) corresponding to the tracking spring (18), and the upper part of the tracking spring (18) is sleeved on the positioning column (1501) and is limited by the positioning column (1501) in the radial direction.

3. A moving contact mounting assembly for a high voltage dc contactor according to claim 1, wherein: the top of the insulating support (13) is provided with a spring guide hole, the lower part of the tracking spring (18) is positioned in the spring guide hole, the bottom of the tracking spring (18) is connected with the bottom of the spring guide hole, and the tracking spring (18) is limited by the spring guide hole in the radial direction.

4. A moving contact mounting assembly for a high voltage dc contactor according to claim 3, wherein: the spring guide hole, the tracking spring (18), the insertion hole (17) and the protrusion (1601) are vertically and coaxially arranged, and the gravity center of the movable contact piece (15) is located on the central axis of the insertion hole (17).