CN213212056U

CN213212056U - High-wiring-terminal straight-plate contactor

Info

Publication number: CN213212056U
Application number: CN202022324385.0U
Authority: CN
Inventors: 宁乐平; 宁龙禹
Original assignee: Nanjing Quanning Electric Co ltd
Current assignee: Nanjing Quanning Electric Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-05-14
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a high wiring terminal straight plate contactor, belonging to the technical field of contactors, comprising an upper shell, a lower shell, a linkage rod and a rod sleeve component arranged at one end of the linkage rod, wherein a static contact and a moving contact matched with the static contact are arranged in the upper shell; the moving contact is connected with the linkage rod through the rod sleeve component; the lower shell is internally provided with a hollow coil, a static iron core positioned in the hollow coil and a movable iron core matched with the static iron core, the movable iron core is internally provided with a reset spring cavity and a reset spring arranged in the reset spring cavity, the rod sleeve assembly is sleeved at one end of the linkage rod, and the other end of the linkage rod penetrates through the upper shell and is arranged in the reset spring; be provided with the flank that is used for moving the iron core and drives on the trace, flank up end with reset spring cavity upper wall is laminated mutually, this high terminal post straight board contactor, simple structure, convenient to use.

Description

High-wiring-terminal straight-plate contactor

Technical Field

The utility model belongs to the technical field of the contactor, concretely relates to high terminal straight plate contactor.

Background

At present, a single-pole direct current contactor for switching a buffer resistor is used on a domestic frequency converter, most frequency converter manufacturers use the single-pole direct current contactor with the rated working voltage of 48V and the insulation voltage of only 60V, the voltage on a direct current bus of the frequency converter with the working voltage of 380V is up to more than 500V, and the use of the contactor can bring higher potential safety hazards to the frequency converter. When the frequency converter is normally started and stopped, the direct current bus voltage is very low and is lower than the 48V rated working voltage of the contactor, and the contactor is in an unbroken state for a long time in normal working, so the contactor has no problem of connection and breaking capacity, even the problem of arc extinction can not be considered, so the reliability of the contactor used on the frequency converter is guaranteed, but the direct current bus voltage of the frequency converter with the working voltage of 380V can be increased to more than 500V in normal working, although some insulation measures are taken on the periphery of the contactor by a frequency converter manufacturer, the potential safety hazard still exists, and the cost is increased. The frequency converter manufacturer suffers from no suitable product replacement, so the frequency converter manufacturer can use the product at all.

The existing insulation voltage is the ordinary unipolar direct current contactor of 60V for insulation voltage, the trace adopts metal material, the creepage distance between moving contact and contact spring and the trace only satisfies 60V's insulation requirement, and the metal trace passes must be metal material's moving contact and movable iron core again, the moving contact is electrified at the during operation, can conduct when voltage is higher and move on the iron core, move the iron core and contact with the metal casing of contactor again, when the voltage of moving contact switch-on is higher than 60V, use in the converter that direct current bus voltage is 500V, contactor metal casing has electrified possibility, there is the potential safety hazard, the trace lower extreme is connected with the reaction spring simultaneously, the reaction spring leads to the fact unstability with the trace easily, need research and develop a novel contactor and solve current problem.

Disclosure of Invention

An object of the utility model is to provide a high terminal straight board contactor to solve the reaction spring and be connected unstable problem with the trace.

In order to achieve the above object, the utility model provides a following technical scheme: a high wiring terminal straight plate contactor comprises an upper shell, a lower shell, a linkage rod and a rod sleeve assembly arranged at one end of the linkage rod, wherein a fixed contact and a movable contact matched with the fixed contact are arranged in the upper shell; the moving contact is connected with the linkage rod through the rod sleeve component;

the lower shell is internally provided with a hollow coil, a static iron core positioned in the hollow coil and a movable iron core matched with the static iron core, the movable iron core is internally provided with a reset spring cavity and a reset spring arranged in the reset spring cavity, the rod sleeve assembly is sleeved at one end of the linkage rod, and the other end of the linkage rod penetrates through the upper shell and is arranged in the reset spring; be provided with the flank that is used for moving the iron core and drives on the trace, the flank up end with reset spring cavity upper wall is laminated mutually, reset spring cover is located on the trace, and reset spring's one end and flank under terminal surface contact, the other end is contradicted on quiet iron core.

Preferably, the fixed contacts are electrically connected with the fixed contact plates respectively, a sliding cavity is arranged in the middle of the hollow coil, and the movable iron core and the fixed iron core are arranged in the sliding cavity.

Preferably, the trace other end is provided with the reset spring locating part that is used for imbedding reset spring, go up the casing top and install the arc extinguishing shield through the dust gasket.

Preferably, the material of the trace is a flame-retardant non-metallic material.

Preferably, the material of the rod sleeve component is a flame-retardant non-metallic material.

Preferably, the length of the side wing from the upper end face of the linkage rod is greater than the length of the side wing from the lower end face of the linkage rod.

Preferably, the rod sleeve component is fixed on the end face, far away from the side wing, of the linkage rod through a screw rod.

Preferably, the other end of the return spring is arranged in a groove above the static iron core.

Preferably, the lower shell is fixedly connected with the upper shell, the upper shell is provided with two control wire connection nails electrically connected with the hollow coil, and an insulating part is arranged between the two connection nails and the static contact plate.

Preferably, the rod sleeve component comprises a rod sleeve sleeved at the upper end of the linkage rod, a contact spring capable of enabling the movable contact to generate elasticity when moving along the rod sleeve, and a fixing part enabling the rod sleeve to be fixed at the upper end of the linkage rod.

The utility model discloses a technological effect and advantage: this high terminal straight plate contactor, simple structure, convenient to use, on the one hand, the material of trace is the non-metallic material of fire resistance, has solved the electrified hidden danger of contactor metal casing, and on the other hand is provided with the flank that is used for moving the iron core and drives on the trace, the flank up end with reset spring cavity upper wall is laminated mutually, makes the connection of reaction spring and trace more stable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic structural view of the rod cover assembly of the present invention.

In the figure: 101. a rod sleeve assembly; 102. a linkage rod; 103. a moving contact; 104. static contact; 105. a binding post; 106. an upper housing; 107. a movable iron core; 108. a stationary iron core; 109. a hollow coil; 110. a lower housing; 111. a contact spring; 112. an arc-extinguishing dust cover; 113. a rod sleeve; 114. a dust-proof pad; 115. a return spring; 116. a return spring cavity; 117. a sliding cavity; 118. a side wing; 121. a wiring nail; 122. an insulating member; 130. a fixing member; 131. a return spring stop.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a high terminal vertical plate contactor as shown in the figure, including last casing 106, lower casing 110, trace 102 and set up the rod cover subassembly 101 in trace 102 one end, rod cover subassembly 101 is including the rod cover 113 of cover locating trace 102 upper end, can make movable contact 103 produce elastic contact spring 111 along the rod cover when moving, make rod cover 113 be fixed in the mounting 130 of trace 102 upper end, in this embodiment, the material of rod cover subassembly 101 is the non-metallic material of fire retardance, prevent that contactor metal casing has electrified hidden danger, the other end of trace 102 is provided with the reset spring locating part 131 that is used for putting into reset spring 115, install arc extinguishing shield 112 through dust gasket 114 above last casing 106, prevent that the electric arc from leaking; the linkage rod 102 is made of flame-retardant non-metallic materials, a static contact 104 and a moving contact 103 matched with the static contact 104 are arranged in an upper shell 106, the static contact 104 is electrically connected with a static contact plate 105, a sliding cavity 117 is arranged in the middle of a hollow coil 109, a moving iron core 107 and a static iron core 108 are arranged in the sliding cavity 117, the stability during movement is ensured, and the moving contact 103 is connected with the linkage rod 102 through a rod sleeve component 101; the rod sleeve assembly 101 is fixed on the end face, far away from the side wing 118, of the linkage rod 102 through a screw, a hollow coil 109, a static iron core 108 located in the hollow coil 109 and a movable iron core 107 matched with the static iron core 108 are arranged in the lower shell 110, a return spring cavity 116 and a return spring 115 arranged in the return spring cavity 116 are arranged in the movable iron core 107, the rod sleeve assembly 101 is sleeved at one end of the linkage rod 102, and the other end of the linkage rod 102 penetrates through the upper shell 106 and is arranged in the return spring 115; the other end of the return spring 115 is arranged in a groove above the static iron core 108;

it should be noted that, the linkage rod 102 is provided with a side wing 118 for driving the movable iron core 107, an upper end surface of the side wing 118 is attached to an upper wall of the return spring cavity 116, the return spring 115 is sleeved on the linkage rod 102, and one end of the return spring 115 contacts with a lower end surface of the side wing 118, and the other end abuts against the stationary iron core 108, in this embodiment, a length of the side wing 118 from the upper end surface of the linkage rod 102 is greater than a length of the side wing 118 from the lower end surface of the linkage rod 102, so that the return spring 115 is more stably connected with the linkage rod 102, the lower shell 110 is fixedly connected with the upper shell 106, the upper shell 106 is provided with two control wire connection pins 121 electrically connected with the hollow coil 109, and an insulating member 122 is provided between the two control wire connection pins 121 and the stationary contact plate.

The working principle is as follows: when the high-wiring-post straight-plate contactor is connected with a power supply, the wiring nail 121 transmits electricity to the hollow coil 109, the static iron core 108 generates electromagnetic force at the moment, the movable iron core 107 is attracted by the magnetic force, overcomes the elastic force of the reset spring 115 sleeved on the reset spring limiting piece 131, and moves towards the static iron core 108; the motion of the movable iron core 107 drives the linkage rod 102 to move downwards; the lever sleeve assembly 101 sleeved on the linkage rod 102 moves along with the linkage rod 102, so that the movable contact 103 is contacted with the fixed contact 104, the contacts are closed, and the load is controlled.

When the power supply is powered off, the hollow coil 109 loses electric energy, the electromagnetic attraction of the static iron core 108 disappears, the movable iron core 107 is away from the static iron core 108 by the counterforce of the reset spring 115 sleeved on the reset spring limiting piece 131, the movable iron core 107 moves upwards to the original position, the linkage rod 102 moves upwards to drive the movable iron core 107 to move upwards, the upper end face of the movable iron core 107 is in contact with the upper shell 106, and the movable iron core 107 moves to the initial position; at this time, the rod sleeve assembly 101 moves upward along with the linkage rod 102, so that the movable contact 103 and the fixed contact 104 on the rod sleeve assembly 101 are disconnected, the contacts are disconnected, and the control of the load is stopped.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A high terminal straight plate contactor is characterized in that: the device comprises an upper shell (106), a lower shell (110), a linkage rod (102) and a rod sleeve component (101) arranged at one end of the linkage rod (102), wherein a static contact (104) and a movable contact (103) matched with the static contact (104) are arranged in the upper shell (106); the moving contact (103) is connected with the linkage rod (102) through the rod sleeve component (101);

the magnetic coupling device is characterized in that a hollow coil (109), a static iron core (108) positioned in the hollow coil (109) and a movable iron core (107) matched with the static iron core (108) are arranged in the lower shell (110), a reset spring cavity (116) and a reset spring (115) arranged in the reset spring cavity (116) are arranged in the movable iron core (107), the linkage rod (102) is sleeved with the rod sleeve component (101), and the other end of the linkage rod (102) penetrates through the upper shell (106) and is arranged in the reset spring (115); be provided with flank (118) that is used for moving iron core (107) to drive on trace (102), flank (118) up end with reset spring cavity (116) upper wall laminates mutually, reset spring (115) cover is located on trace (102), and the one end of reset spring (115) and flank (118) lower terminal surface contact, and the other end is contradicted on quiet iron core (108).

2. A high terminal beam contactor as claimed in claim 1, wherein: the static contact (104) is electrically connected with a static contact plate (105) respectively, a sliding cavity (117) is arranged in the middle of the hollow coil (109), and the movable iron core (107) and the static iron core (108) are arranged in the sliding cavity (117).

3. A high terminal beam contactor as claimed in claim 1, wherein: the other end of the linkage rod (102) is provided with a return spring limiting piece (131) used for being placed in a return spring (115), and an arc-extinguishing dustproof cover (112) is installed above the upper shell (106) through a dustproof pad (114).

4. A high terminal beam contactor as claimed in claim 1, wherein: the material of the linkage rod (102) is a flame-retardant non-metallic material.

5. A high terminal beam contactor as claimed in claim 1, wherein: the rod sleeve component (101) is made of flame-retardant non-metallic materials.

6. A high terminal beam contactor as claimed in claim 1, wherein: the length of the side wing (118) from the upper end face of the linkage rod (102) is greater than the length of the side wing (118) from the lower end face of the linkage rod (102).

7. A high terminal beam contactor as claimed in claim 1, wherein: the rod sleeve component (101) is fixed on the end face, far away from the side wing (118), of the linkage rod (102) through a screw rod.

8. A high terminal beam contactor as claimed in claim 1, wherein: the other end of the return spring (115) is arranged in a groove above the static iron core (108).

9. A high terminal beam contactor as claimed in claim 1, wherein: the lower shell (110) is fixedly connected with the upper shell (106), the upper shell (106) is provided with two control wire connection nails (121) electrically connected with the hollow coil (109), and an insulating part (122) is arranged between the two connection nails (121) and the static contact plate (105).

10. A high terminal beam contactor as claimed in claim 1, wherein: the rod sleeve component (101) comprises a rod sleeve (113) sleeved at the upper end of the linkage rod (102), a contact spring (111) capable of enabling the moving contact (103) to generate elasticity when moving along the rod sleeve (113), and a fixing piece (130) enabling the rod sleeve (113) to be fixed at the upper end of the linkage rod (102).