CN216120120U - Static contact fixed knot constructs and contactor - Google Patents

Abstract

The utility model discloses a fixed contact fixing structure and a contactor, wherein the fixed contact fixing structure comprises a shell and a contact plate arranged in the shell, a channel for inserting the contact plate is formed in the shell, a fixed contact is arranged at the front end of the contact plate, the contact plate is inserted into the channel from the inlet end of the channel, grooves are formed in two sides of a plate body of the contact plate, bosses corresponding to the grooves are arranged in the channel, and the contact plate is fastened to the shell through the clamping matching of the grooves and the bosses. The fixing structure is convenient to mount and reliable in fixing, and the contact plate can be effectively prevented from being separated from the shell.

Description

Static contact fixed knot constructs and contactor

Technical Field

The utility model relates to the technical field of contactors, in particular to a fixed contact fixing structure of a contactor.

The utility model also relates to a contactor provided with the static contact fixing structure.

Background

The contactor is an electrical appliance which uses a coil to flow current to generate a magnetic field in industrial electricity to close a contact so as to control a load, is widely applied to electric power, distribution and power utilization occasions, and is mainly divided into an alternating current contactor and a direct current contactor.

The working principle of the contactor is as follows: when the coil of the contactor is electrified, the coil current can generate a magnetic field, the generated magnetic field enables the static iron core to generate electromagnetic attraction to attract the movable iron core and drive the alternating current contactor to act, the normally closed contact is opened, the normally open contact is closed, and the normally closed contact and the normally open contact are linked. When the coil is powered off, the electromagnetic attraction disappears, the armature is released under the action of the release spring, the contact is restored, the normally open contact is disconnected, and the normally closed contact is closed.

The fixed knot of static contact plate of traditional contactor constructs, generally inserts the contact plate of static contact and with the spacing structure of body shell complex, realizes about spacing, then screws the contact plate from body shell upper portion or body shell lower part through the screw, and the screw additionally adopts locking scheme to fasten, reaches the spacing function demand of the contact plate of static contact. The mode of realizing the front and back limiting of the contact plate through the screw has the advantages of high part cost, complex installation and low production efficiency.

Still some contactors are at the inside mounting groove that sets up of casing, and the static contact plate realizes the location through the interference fit with the mounting groove, and this kind of fixed knot constructs the reliability relatively poor, has the problem that the contact plate drops easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fixed structure of a static contact. The fixing structure is convenient to mount and reliable in fixing, and the contact plate can be effectively prevented from being separated from the shell.

Another object of the present invention is to provide a contactor having the fixed contact fixing structure.

In order to achieve the above object, the present invention provides a fixed contact fixing structure, which includes a housing and a contact plate disposed in the housing, wherein a channel for inserting the contact plate is formed in the housing, a fixed contact is disposed at the front end of the contact plate, the contact plate is inserted into the channel from the inlet end of the channel, a groove is disposed on a side surface of a plate body of the contact plate, the channel is provided with a boss corresponding to the groove, and the contact plate is fastened to the housing by the clamping fit of the groove and the boss.

Optionally, the contact plate has a first portion, a transition portion and a second portion from the front end to the recess, and the width of the transition portion gradually widens from the first portion to the second portion.

Optionally, a limiting structure capable of limiting the contact plate to be continuously inserted forwards in a clamping mode of the groove and the boss is arranged at the rear portion of the contact plate.

Optionally, the limiting structure includes a first bending portion and a second bending portion located at the rear of the contact plate, and the first bending portion and the second bending portion form a zigzag shape and abut against the housing; and/or, the limiting structure comprises a limiting step positioned on the side surface of the contact plate, and the limiting step is abutted to the shell.

Optionally, a notch part is arranged on one side of the rear part of the contact plate; and/or the length of the groove is greater than that of the boss and less than that of the channel along the direction from the front end to the rear end of the contact plate.

Optionally, the boss projects towards the channel outlet end and the inside of the channel at the channel outlet port, respectively.

Optionally, the outer contour of the boss includes a transition slope surface at the rear side, a sliding mating surface at the inner side, a locking surface at the front side, and a back surface at the outer side.

Optionally, both the included angle between the transition inclined surface and the inner wall of the channel and the included angle between the transition inclined surface and the sliding matching surface are obtuse angles; the included angle between the sliding matching surface and the clamping and stopping surface is a right angle, and the included angle between the back surface and the clamping and stopping surface and the included angle between the back surface and the front end surface of the channel are obtuse angles.

Optionally, the channel includes an upper channel, a middle channel, and a lower channel, the upper channel is configured to pass through the upper convex portion of the static contact, the middle channel is configured to pass through the contact plate, the lower channel is configured to pass through the lower convex portion of the static contact, and the bosses are located on left and right sides of an outlet end of the middle channel.

In order to achieve the above another object, the present invention further provides a contactor, including a housing and a static contact plate disposed on the housing, wherein the static contact plate is mounted on the housing through any one of the static contact fixing structures.

The fixed contact fixing structure provided by the utility model is characterized in that grooves are formed in two sides of a plate body of the contact plate, and bosses corresponding to the grooves are formed in two sides of an outlet end of a shell channel. Therefore, when the contact plate is installed, the freedom degrees of the contact plate in the upper direction, the lower direction, the left direction and the right direction can be limited by means of the channel, and moreover, after the contact plate is inserted in the channel in place, the bosses on the two sides of the channel can be clamped into the grooves on the two sides of the contact plate, so that the contact plate is prevented from retreating from the channel, the front freedom degree and the rear freedom degree of the contact plate are limited, the contact plate is fastened on the shell, and the contact plate is convenient to install, reliable in fixation and capable of effectively preventing the contact plate from being separated from the shell.

The contactor provided by the utility model is provided with the static contact fixing structure, and the static contact fixing structure has the technical effects, so the contactor provided with the static contact fixing structure also has corresponding technical effects.

Drawings

Fig. 1 is an axial view of a fixed contact structure according to an embodiment of the present invention;

fig. 2 is an axial view of the fixed contact structure shown in fig. 1 from a reverse perspective;

fig. 3 is a front view of the fixed contact structure shown in fig. 1;

FIG. 4 is a view A-A of FIG. 3;

FIG. 5 is a partial enlarged view of the portion B in FIG. 3;

FIG. 6 is a partial enlarged view of the portion C in FIG. 4;

fig. 7 is an isometric view of fig. 4.

In the figure:

1. housing 2, contact plate 21, first portion 22, transition portion 23, second portion 24, first bent portion 25, second bent portion 26, notch portion 27, limit step 3, channel 31, upper channel 32, middle channel 33, lower channel 4, fixed contact 41, upper protrusion 42, lower protrusion 5, groove 6, boss 61, transition inclined surface 62, sliding mating surface 63, locking surface 64, back surface

Detailed Description

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

As shown in fig. 1, 2 and 3, in an embodiment, the fixed contact structure provided by the present invention mainly includes a housing 1 and a plurality of contact plates 2 disposed on the housing 1, and for the convenience of clearly showing the fixed contact structure, other components of the contactor are omitted in the drawings.

Specifically, the number of the contact plates 2 shown in the present embodiment is three, accordingly, three channels 3 for inserting the contact plates are formed inside the housing 1, one end of each contact plate 2 penetrating through the channel 3 is respectively provided with a fixed contact 4, after the fixed contact 4 is installed on the contact plate 2, the fixed contact 4 forms a substantially circular upper convex portion 41 on the upper surface of the contact plate 2, and a substantially circular lower convex portion 42 on the lower surface of the contact plate 2, so that, in order to smoothly insert the contact plate 2, each channel 3 inside the housing 1 is also correspondingly divided into an upper channel 31, a middle channel 32 and a lower channel 33 (see fig. 5), and the upper channel 31, the middle channel 32 and the lower channel 33 are interconnected and intercommunicated from top to bottom, that is, each channel 3 can be divided into three parts from top to bottom.

In the process of inserting the contact plate 2, the upper protrusion 41 formed by the fixed contact 4 can pass through the upper channel 31, the contact plate 2 can pass through the middle channel 32, the lower protrusion 42 formed by the fixed contact 4 can pass through the lower channel 32, the transverse width of the middle channel 32 is the largest, and the size of the cross section of the middle channel is slightly larger than that of the contact plate 2, so that the freedom degree of the contact plate 2 in the upper, lower, left and right directions can be sufficiently limited on the premise of ensuring smooth insertion of the contact plate 2, the transverse width of the upper channel 31 is smaller than that of the middle channel 32, a certain gap is formed between the inner wall of the upper channel and the upper protrusion 41 formed by the fixed contact 4, the transverse width of the lower channel 33 is smaller than that of the upper channel 31, the depth is shallow, and a certain gap is formed between the inner wall of the lower protrusion 42 formed by the fixed contact 4 and the lower channel 31.

As shown in fig. 4 to 7, the contact plate 2 has a first portion 21, a transition portion 22 and a second portion 23 from the front end to the recess 5 through one end of the passage 3, and the width of the transition portion 22 gradually widens from the first portion 21 to the second portion 23.

The left and right sides at its plate body middle part of contact plate 2 is equipped with rectangular groove 5 respectively, and passageway 3 is equipped with the boss 6 that corresponds to groove 5 in the left and right sides of exit end, and this boss 6 is located the exit end both sides of middle passageway 32, and contact plate 2 inserts the back that targets in place forward, alright with cooperate the fastening on casing 1 through the joint of boss 6 and groove 5.

In the present embodiment, the length of the groove 5 is designed to be greater than the length of the boss 6 and less than the length of the passage 3 in the direction from the front end to the rear end of the contact plate 2. Of course, the length of the recess 5 can also be designed to be relatively short, so that it is possible to snap into the projection 6 precisely.

The detailed configuration of the boss 6 on the left side of the channel 3 will be described in more detail below, and the boss 6 on the right side of the channel 3 is symmetrical in structure. The projection 6 projects at the outlet end of the duct 3 towards the outlet end of the duct and towards the inside of the duct, and has an outer contour with a transition bevel 61 on the rear side, a sliding counter-surface 62 on the inside, a locking surface 63 on the front side and a rear surface 64 on the outside.

The included angle between the transition inclined surface 61 and the inner wall of the channel 3 and the included angle between the transition inclined surface 61 and the sliding matching surface 62 are both obtuse angles; the included angle between the sliding engagement surface 62 and the clamping surface 63 is a right angle, and the included angle between the clamping surface 63 and the back surface 64 and the included angle between the back surface 64 and the front end surface of the channel 3 are obtuse angles.

Such a boss structure allows the boss 6 to have a certain amount of elastic deformation during insertion into the contact plate 2, which can be expanded by the contact plate 2 and then rebound, after which the latching surface 63 of the boss 6 abuts against the front wall surface of the recess 5, thereby limiting the degree of freedom of the contact plate 2 to retreat backward.

The rear portion of the contact plate 2 is designed to have a zigzag shape having a first bending portion 24 and a second bending portion 25, and abuts against the step portion of the housing 1, in the present embodiment, both the first bending portion 24 and the second bending portion 25 are designed to be right angles, in other embodiments, the first bending portion 24 and the second bending portion 25 may also be designed to be obtuse angles, or one of the bending portions is right angle and the other bending portion is obtuse angle. With this construction, the contact plate 2 can be restricted from being inserted further forward into the passage 3 after the snap-fit engagement of the recess 5 with the projection 6.

Meanwhile, the contact plate 2 is provided with a limiting step 27 at one side of the rear part, and after the groove 5 is in clamping fit with the boss 6, the limiting step 27 abuts against one side of the inlet end of the channel 3, so that the contact plate 2 is limited from being continuously inserted into the channel 3 forwards.

It will be appreciated that the "zigzag" structure or the limit step 27 described above may be provided separately in order to limit the distance by which the contact plate 2 is inserted forward.

In addition, the rear part of the contact plate 2 is provided with a notch part 26 on one side to achieve the functions of avoiding and reducing materials.

When assembling, each contact plate 2 is inserted into the corresponding channel 3 one by one from the inlet end, when the contact plate 2 is pushed forward, the transverse width of the first part 21 of the front end of the contact plate 2 is smaller than the distance between the left and right bosses 6, so that the contact plate 2 can enter the channel 3 without resistance, then the inclined surfaces at both sides of the transition part 22 at the front end of the contact plate 2 are contacted with the transition inclined surfaces 61 of the bosses 6 and are elastically deformed under the pressure of the contact plate 2, after the transition part 22 at the front end of the contact plate 2 exceeds the bosses 6, the left and right sides of the second part 23 at the front end of the contact plate 2 are contacted with the sliding matching surfaces 62 of the bosses 6, and after the second part 23 also exceeds the bosses 6, the bosses 6 are quickly rebounded inwards and enter the grooves 5 at both sides of the contact plate 2.

At this time, the rear portion of the contact plate 2 is restricted by the first and second bent portions 24 and 25 and cannot be further pushed forward, and the locking surface 63 of the boss 6 abuts against the front wall surface of the recess 5 and cannot be withdrawn backward, so that the degree of freedom in the front-rear direction of the contact plate 2 is limited, and the passage 3 itself can restrict the contact plate 2 in the up-down, left-right and up-down directions, so that the contact plate 2 can be reliably positioned on the housing 1 and is not easily detached.

It should be noted here that although the fixed structure of the static contact can achieve the purpose of positioning without using fasteners such as screws, it is not excluded that the fixed structure is further reinforced by fasteners such as screws on the basis of clamping the boss 6 and the groove 5, that is, the fixed structure may be used alone or in combination with other structures.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the housing 1 is provided with a plurality of layers of channels 3, each layer having a plurality of channels 3, or the boss 6 is designed to have other shapes capable of elastic deformation, and so on. This is not illustrated here, since many implementations are possible.

This static contact fixed knot constructs when installation contact plate 2, not only can be spacing with the help of passageway 3 to contact plate 2 upper and lower, left and right degree of freedom, moreover, after contact plate 2 inserts in the passageway 3 and targets in place, the boss 6 of passageway 3 both sides can block in the recess 5 of contact plate 2 both sides, thereby prevent that contact plate 2 from withdrawing from the passageway backward, make contact plate 2 preceding, back degree of freedom also receive spacingly, thereby fasten contact plate 2 on casing 1, can prevent effectively that contact plate 2 from deviating from casing 1, and has simple to operate, beneficial effect such as fixed reliable.

In addition to the above-mentioned fixed structure of the static contact, the present invention further provides a contactor, which has a housing 1 and a static contact plate disposed on the housing 1, wherein the static contact plate is mounted on the housing 1 through the above-mentioned fixed structure of the static contact.

The fixed contact structure and the contactor provided by the utility model are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The fixed structure of the static contact comprises a shell (1) and a contact plate (2) arranged on the shell (1), wherein a channel (3) used for being inserted into the contact plate (2) is formed inside the shell (1), the static contact (4) is arranged at the front end of the contact plate (2), the contact plate (2) is inserted into the channel (3) from the inlet end of the channel (3), and the fixed structure of the static contact is characterized in that a groove (5) is formed in the side surface of a plate body of the contact plate (2), a boss (6) corresponding to the groove (5) is arranged on the channel (3), and the contact plate (2) is fastened on the shell (1) through the clamping fit of the groove (5) and the boss (6).

2. The stationary contact fixing structure of claim 1, wherein the contact plate (2) has a first portion (21), a transition portion (22) and a second portion (23) from the front end to the recess (5), and the width of the transition portion (22) gradually widens from the first portion (21) to the second portion (23).

3. The fixed contact head structure of claim 1, wherein a limiting structure is disposed at the rear portion of the contact plate (2) for limiting the contact plate (2) from being inserted forward after the groove (5) and the boss (6) are engaged.

4. The fixed contact fixing structure of claim 3, wherein the limiting structure comprises a first bending portion (24) and a second bending portion (25) located at the rear portion of the contact plate (2), the first bending portion (24) and the second bending portion (25) form a zigzag shape and abut against the housing (1); and/or the limiting structure comprises a limiting step (27) located on the side face of the contact plate (2), and the limiting step (27) abuts against the shell (1).

5. The static contact fixing structure of claim 4, wherein the rear portion of the contact plate (2) is provided with a notch portion (26) at one side; and/or the length of the groove (5) is greater than the length of the boss (6) and less than the length of the channel (3) along the direction from the front end to the rear end of the contact plate (2).

6. The stationary contact fixing structure of claim 1, wherein the boss (6) protrudes from the outlet end of the channel (3) and from the inner side of the channel (3) at the outlet port of the channel (3).

7. The stationary contact fixing structure of claim 6, wherein the outer contour of the boss (6) comprises a transition slope (61) at the rear side, a sliding mating surface (62) at the inner side, a latch surface (63) at the front side, and a back surface (64) at the outer side.

8. The fixed contact terminal structure of claim 7, wherein the included angle between the transition inclined surface (61) and the inner wall of the channel (3) and the included angle between the transition inclined surface (61) and the sliding mating surface (62) are obtuse angles; the included angle between the sliding matching surface (62) and the clamping surface (63) is a right angle, and the included angle between the clamping surface (63) and the back surface (64) and the included angle between the back surface (64) and the front end surface of the channel (3) are obtuse angles.

9. The fixed contact terminal structure of claim 1, wherein the channel (3) comprises an upper channel (31), a middle channel (32) and a lower channel (33), the upper channel (31) is used for passing through an upper protrusion (41) of the fixed contact terminal (4), the middle channel (32) is used for passing through the contact plate (2), the lower channel (33) is used for passing through a lower protrusion (42) of the fixed contact terminal (4), and the bosses (6) are located on the left side and the right side of the outlet end of the middle channel (32).

10. A contactor, comprising a housing and a stationary contact plate disposed on the housing, wherein the stationary contact plate is mounted on the housing through the stationary contact fixing structure of any one of claims 1 to 9.

Images