CN204464175U - A screw anti-shaking and anti-off contactor - Google Patents

Abstract

The utility model discloses a kind of screw anti-shake anticreep contactor, prior art medium and small cage contactor terminal screw easily rock to overcome, caducous deficiency.This contactor comprises panel, watt grommet screw, static contact component, housing.Static contact component is arranged in the draw-in groove of housing, and static contact component is fixed by housing; Erecting of panel is at housing tip, and a watt grommet screw is arranged in the screwed hole of static contact component; Panel is provided with screw mounting hole, positioning element is provided with around the one side towards housing, screw mounting hole of this panel, this positioning element extends in housing and end has the bending of certain angle, the sidewall locations of housing is also provided with limiting component, limiting component on every two adjacent walls of housing is symmetrical, and limiting component is interference fit with watt pad.Improvement project structure of the present utility model is simple, not only reduces watt grommet screw and rocks the noise caused, and greatly reduces the risk that in transportation, watt grommet screw is lost.

Description

A screw anti-shaking and anti-off contactor

technical field

The utility model relates to a contactor, which belongs to the technical field of low-voltage electrical appliances.

Background technique

A contactor is an electrical appliance that uses a coil to flow current to generate a magnetic field to close the contacts to control the load. Its main control objects are motors and other circuit loads. In some low-voltage contactors, the terminal screws are mainly tile screws. As shown in Figure 6, during the long-distance transportation of contactor products, the screws are prone to serious shaking and even fall off from the tile. The user of the contactor brings a lot of unnecessary trouble. Therefore, for the small frame contactor using the pad screw, the easy shaking and falling off of the wiring screw is a problem that needs to be solved urgently. The usual solution is to fix by means of reinforcing ribs, or provide screw threads in the threaded holes in the screw heads and the matching caps to make them match.

Contents of the invention

The purpose of this utility model is to overcome the disadvantages of the prior art that the wiring screws of small and medium-sized frame contactors are easy to shake and fall off, and to provide a screw anti-shake and anti-off contactor, which combines the tile pad screw with the panel and the shell, so that the tile Pads and screws eliminate shaking and falling off.

In order to achieve the above object, the technical solution of the utility model is:

A screw anti-shaking and anti-off contactor includes: a panel, a tile screw, a static contact assembly, and a housing. The static contact assembly is installed in the card slot of the housing, and the housing fixes the static contact assembly; the panel is installed on the top of the housing, and the panel is fixed in the housing through a buckle connection, and the tile pad screw is installed on the static contact In the threaded hole of the component; a screw mounting hole is provided on the panel, and a positioning part is arranged on the side of the panel facing the housing and around the screw mounting hole. The positioning part extends into the housing and has a certain angle of bending at the end.

Further, the above-mentioned positioning part of the panel is specifically arranged on the edge of the screw installation hole, and is a pair of thin sheets symmetrical to the center of the screw installation hole.

Further, the two sheets of the positioning component are bent away from each other at a certain angle, the thickness of the sheet is preferably 0.5mm, and have the characteristics of flexible positioning; when the screw is screwed up to a certain position, it will contact the positioning component, at this time The screw continues to move upwards, and the positioning part extends to both sides. When the screw is fully unscrewed, the positioning part will apply a certain pressure to the screw pad to ensure the stability of the screw.

Further, a limiting component is also provided on the side wall of the housing, and the limiting components on every two adjacent side walls of the housing are symmetrical, and the limiting component and the pad are in an interference fit. When the screw is unscrewed upwards to a certain position, it will be in contact with the limiting part. At this time, the screw continues to move upwards, and the limiting part extends away from the other side. When the screw is fully unscrewed, the limiting part will exert force on the pad screw A certain amount of pressure is applied to ensure the stability of the screw.

Further, the static contact assembly includes an auxiliary circuit static contact assembly and a main circuit static contact assembly, the pad screws of the main circuit are limited by the two side walls of the housing, and the pad screws of the auxiliary circuit are limited by the panel. When the tile pad screw withdraws from the threaded hole of the static contact of the auxiliary circuit, the tile pad contacts the positioning part of the panel after reaching a certain position, and continues to run upward, and the tile pad will be subjected to the external force exerted by the panel. When the screw no longer moves, due to Under the action of external force, the panel can well fix the tile pad; when the tile pad screw withdraws from the threaded hole of the static contact of the main circuit, the tile pad reaches a certain position and contacts the limit part of the shell, and continues to run upward, and the tile pad It will be subjected to the external force exerted by the shell. When the screw no longer moves, due to the external force, the shell can well fix the pad.

By adopting the above-mentioned technical scheme, when the pad screw installed on the static contact assembly of the main circuit falls off, it is positioned by the limiting parts on the two adjacent side walls of the housing, and installed on the auxiliary contact assembly. When the pad screw on the circuit static contact assembly falls off, it is positioned by the positioning part of the panel, so that the pad screw can be fixed, which effectively solves the problem that the pad screw shakes and falls off during the long-distance transportation of the contactor . The improved scheme of the utility model has simple structure, is easy to realize, and has low cost. After adding the positioning part and the limit part of the utility model, the contactor not only reduces the noise caused by the shaking of the pad screw during assembly and transportation of the contactor, but also greatly reduces the risk of loss of the pad screw during transportation.

Description of drawings

Figure 1 is a schematic diagram of a normally open auxiliary static contact assembly.

Fig. 2 is a schematic diagram of a normally closed auxiliary static contact assembly.

Fig. 3 is a schematic diagram of the static contact assembly of the main circuit.

Fig. 4 is a schematic diagram of the housing of the embodiment.

Fig. 5 is a schematic diagram of the panel of the embodiment.

Fig. 6 is a schematic diagram of a pad screw.

Fig. 7 is a left side view of the housing of the embodiment when the housing is just in contact with the pad.

FIG. 8 is a sectional view along AA direction of FIG. 7 .

Fig. 9 is a left side view of the casing when the main circuit screw of the embodiment stops moving.

Fig. 10 is a sectional view along AA direction of Fig. 9 .

Fig. 11 is a left side view of the panel when the panel of the embodiment is just in contact with the pad.

Fig. 12 is a cross-sectional view along B-B direction of Fig. 11 .

Fig. 13 is a left side view of the panel when the auxiliary circuit screw of the embodiment stops moving.

Fig. 14 is a sectional view along B-B direction of Fig. 13 .

The marks in the figure indicate: 1. Threaded hole; 2. Threaded hole; 3. Threaded hole; 4. Side wall; 5. Limiting part; 6. Positioning part; 7. Screw mounting hole; 8. Screw; .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

The screw anti-sway and anti-off contactor in this preferred embodiment includes a panel, a tile screw, a static contact assembly, and a housing. As shown in Figure 1-Figure 3, the static contact assembly is installed in the card slot of the housing, and the static contact assembly includes normally open auxiliary static contact assembly, normally closed auxiliary static contact assembly, main circuit static contact Assemblies, the normally open auxiliary static contact assembly, the normally closed auxiliary static contact assembly, and the main circuit static contact assembly are respectively provided with threaded holes 1, 2, and 3, and the tile pad screws are installed in the threaded holes 1, 2, and 3. ; The tile pad screw is composed of tile pad 9 and screw 8, as shown in Figure 6.

The panel is installed on the top of the housing, as shown in Figure 5, the panel is provided with a screw mounting hole 7, on the side of the panel facing the housing, the edge of the screw mounting hole 7 is provided with a positioning component 6, the positioning component 6 It is a pair of thin sheets that are symmetrical with the screw mounting hole 7 as the center, and the two symmetrical thin sheets are bent away from each other at a certain angle, and the thickness of the thin sheets is preferably 0.5mm.

The schematic diagram of the housing is shown in Figure 4. A limiting component 5 is arranged on the side wall 4 of the housing. The limiting components 5 on every two adjacent side walls 4 are symmetrical, and the limiting component 5 and the pad 9 is interference fit.

When the tile pad screw withdraws from the threaded hole of the static contact of the auxiliary circuit, the tile pad contacts the positioning part of the panel after reaching a certain position, as shown in Figure 11 and 12; the screw continues to move upward, and the tile pad will be subjected to the external force exerted by the panel , when the screw no longer moves, due to the action of external force, the panel can well fix the tile pad, as shown in Figure 13 and 14; when the tile pad screw withdraws from the threaded hole of the static contact of the main circuit, the tile pad reaches After a certain position, it contacts with the limiting part of the shell, as shown in Figure 7 and 8; the screw continues to move upward, and the tile pad will be subjected to the external force exerted by the shell. When the screw no longer moves, due to the external force, the shell can be very fast. Fix the pad well, as shown in Figure 9 and 10.

The utility model is not limited to the above-mentioned embodiments, and all technical solutions formed by equivalent replacement or equivalent replacement belong to the protection scope of the utility model.

Claims (9)

1. A screw anti-shaking and anti-off contactor, comprising a panel, a tile screw, a static contact assembly, and a housing, wherein the panel is placed on the top of the housing, and the static contact assembly is installed on the top of the housing In the card slot, the tile pad screw is installed in the threaded hole of the static contact assembly. It is characterized in that a positioning component is provided at the screw mounting hole on the side of the panel that is in contact with the shell, and the positioning component is positioned toward the shell. Extended in the body with bends at the ends. 2. The screw anti-sway and anti-off contactor according to claim 1, characterized in that: the positioning parts are a pair of thin sheets symmetrical with the threaded hole as the center, which apply pressure to the tile screw deviated from the original position to Hold the screw steady. 3. The screw anti-sway and anti-off contactor according to claim 2, characterized in that: the ends of the two symmetrical thin pieces of the positioning part are respectively bent in the direction away from each other, so that the tiles that deviate from the original position Pad screw for flexible positioning. 4. The screw anti-shake and anti-off contactor according to claim 3, characterized in that: when the screw of the tile pad screw is unscrewed upward to a certain position, the screw is in contact with the positioning part; the screw continues to When moving upwards, the two thin pieces of the positioning part extend away from each other; after the screw is fully unscrewed, the positioning part exerts pressure on the pad screw to keep the screw stable. 5. The screw anti-sway and anti-off contactor according to claim 4, characterized in that: the thickness of the two symmetrical thin pieces of the positioning component is 0.5 mm. 6. The screw anti-sway and anti-off contactor according to any one of claims 1 to 5, characterized in that: a limiting part is provided on the side wall of the housing. 7. The screw anti-sway and anti-off contactor according to claim 6, characterized in that: the limiting parts on the adjacent side walls of the housing are symmetrical, and the limiting parts and the pad screws The tile pads are an interference fit. 8. The screw anti-sway and anti-off contactor according to claim 7, characterized in that: when the screw of the tile pad screw is screwed upward to a certain position, the screw is in contact with the limiting part; When continuing to move upward, the limiting part extends away from the opposite side; after the screw is fully unscrewed, the limiting part exerts pressure on the pad screw to keep the screw stable. 9. The screw anti-sway and anti-off contactor according to claim 8, wherein the static contact assembly includes an auxiliary circuit static contact assembly and a main circuit static contact assembly, wherein the static contact assembly installed on the main circuit The pad screws on the contact assembly are limited by two adjacent side walls of the housing, and the pad screws installed on the static contact assembly of the auxiliary circuit are limited by the panel.