CN218631824U - Casing subassembly and contactor - Google Patents

Abstract

The embodiment of the application provides a shell assembly and a contactor, and relates to the technical field of distribution equipment. The housing assembly includes: base, base and dust cover. The base has the installation cavity, and the roof of installation cavity is equipped with the accent, and the lateral wall is equipped with the opening. The base covers the cavity opening. The dust cover has a lap joint arm, and the base pass through the centre gripping lap joint arm to make the dust cover lid close the opening. This application embodiment is through setting up the overlap joint arm on the dust cover to through with overlap joint arm centre gripping between base and base, realize the fixed to the dust cover, simplified the structure and the processing technology of dust cover, and then simplified the assembly process of dust cover, base and base, improved shell assembly's assembly efficiency.

Description

Casing subassembly and contactor

Technical Field

The embodiment of the application relates to the technical field of distribution equipment, in particular to a shell assembly and a contactor.

Background

The contactor is a device which is applied to a distribution circuit, can quickly cut off main circuits of alternating current and direct current, and can frequently turn on and off a large-current control circuit. The housing assembly is an assembly for mounting and housing the internal components of the contactor.

However, the complex structure of the components in the conventional housing assembly may reduce the assembly efficiency of the housing assembly.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present application provide a housing assembly and a contactor, which are used to solve the problem of low assembly efficiency of the existing housing assembly.

In a first aspect, embodiments of the present application provide a housing assembly. The housing assembly includes: base, base and dust cover. The base has the installation cavity, and the roof of installation cavity is equipped with the accent, and the lateral wall is equipped with the opening. The base covers the cavity opening. The dust cover has a lap joint arm, and the base pass through centre gripping lap joint arm to make the dust cover close the opening.

Among the technical scheme of this application embodiment, through set up the overlap joint arm on the dust cover, through with the direct centre gripping of overlap joint arm between base and base, can realize the fixed to the dust cover, for among the prior art, through set up complicated connection structure on the dust cover, and connect the dust cover in the base through connection structure, not only make the structure and the processing technology of dust cover obtain simplifying, still saved the process that the base is connected with the dust cover earlier, make the dust cover, the assembly process of base and base has obtained the simplification, thereby make housing assembly's assembly efficiency obtain improving. In addition, after the dust cover closed the opening of installation cavity, can also block the pollutant (for example, dust, fabric etc.) in the environment, reduce the pollutant and get into inside the installation cavity along the opening, cause the possibility of influence to electromagnetic system.

In an alternative mode, the base is provided with a top surface, the base is provided with a bottom surface, and when the base covers the cavity opening, the top surface is opposite to the bottom surface; the lap arm is sandwiched between the top and bottom surfaces.

Through above-mentioned scheme, behind top surface and the bottom surface centre gripping overlap joint arm, overlap joint arm can be firm be fixed in between base and the base to close the opening lid, realize blockking to the pollutant.

In an alternative form, one of the base and the base is provided with a recess adapted to the lapping arm, and the other presses the lapping arm when the lapping arm is in the recess.

Through above-mentioned scheme, behind the diapire of recess and base or the base centre gripping overlap joint arm, overlap joint arm can be firm be fixed in between base and the base to close the opening lid, realize blockking the pollutant.

In an alternative mode, one of the base and the base is provided with a protrusion, the other one of the base and the base is provided with a mounting groove matched with the protrusion and the lapping arm, and after the lapping arm is arranged in the mounting groove, the protrusion presses the lapping arm.

Through above-mentioned scheme, the tank bottom of mounting groove and protruding centre gripping overlap joint arm back, the overlap joint arm can be firmly fixed in between base and the base to close the opening lid, realize blockking of pollutant.

In an alternative mode, the lapping arm is provided with a first guide surface, and the first guide surface is used for guiding when the lapping arm enters the mounting groove; and/or the bulge is provided with a second guide surface which is used for guiding when the bulge enters the mounting groove.

Through the scheme, the bulge and the lap joint arm can enter the mounting groove more easily, and the possibility of damage to the mounting groove is reduced.

In an optional mode, one of the base and the dust cover is further provided with a buckle, the other one of the base and the dust cover is further provided with a clamping groove matched with the buckle, and the dust cover is detachably connected to the base through the buckle and the clamping groove.

Through above-mentioned scheme, on the basis of base and base centre gripping overlap joint arm, the base can also be connected with the dust cover buckle to improve the reliability that casing assembly connects.

In an optional mode, one of the base and the dust cover is further provided with a connecting column, the other one of the base and the dust cover is further provided with a connecting hole matched with the connecting column, and the dust cover is detachably connected to the base through the connecting column and the connecting hole.

Through above-mentioned scheme, on the basis of base and base centre gripping overlap joint arm, the base can also be connected with the dust cover interference to improve the reliability that casing assembly connects.

In an alternative mode, the housing assembly further comprises a bolt or a screw, the dust cover is further provided with a through hole adapted to the bolt or the screw, the base is further provided with a threaded hole adapted to the bolt or the screw, and one end of the bolt or the screw penetrates through the through hole and is fixed to the threaded hole so as to connect the base and the dust cover.

Through above-mentioned scheme, on the basis of base and base centre gripping overlap joint arm, base and dust cover can also be through bolt or screw connection to improve the reliability that casing subassembly connects.

In an alternative form, the dust boot is provided with louvers.

Through above-mentioned scheme, the dust cover can also play the radiating action when dustproof.

In a second aspect, embodiments of the present application also provide a contactor including the housing assembly of the first aspect.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and in order that the technical means of the embodiments of the present application can be clearly understood, the embodiments of the present application are specifically described below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a top view of a housing assembly according to some embodiments of the present application.

Fig. 2 is an exploded view of a housing assembly according to some embodiments of the present application.

Fig. 3 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A in fig. 1.

FIG. 4 is a first schematic view of the base and base clamp strap arm illustrated in FIG. 3 at location C.

Fig. 5 is a second schematic view of the base and base clamp latch arm illustrated in fig. 3 at location C.

FIG. 6 is a third schematic view of the base and base clamp strap arm illustrated in FIG. 3 at location C.

Description of reference numerals:

1. a base; 10. a mounting cavity; q, a cavity opening; K. an opening; 11. a top surface; 13. a groove; 14. mounting grooves; 2. a base; 21. a bottom surface; 22. a protrusion; 3. a dust cover; 31. a lapping arm; 32. and (4) heat dissipation holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: there are three cases of A, both A and B, and B. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. For example, in the description of the present application, the terms "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, which are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be considered limiting of the present application.

Furthermore, the terms "first," "second," and the like in the description and claims of this application or in the foregoing drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential order, either explicitly or implicitly, including one or more of the features. In the description of the present application, unless otherwise specified, "plurality" means two or more (including two), and similarly, "plural groups" means two or more (including two).

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., "connected" or "connected" of a mechanical structure may mean physically connected, e.g., physically connected, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

First, it should be noted that the housing assembly provided in the embodiments of the present application includes, but is not limited to, a contactor, and may also be used in other power distribution equipment, such as a circuit breaker. The practical application main body of the shell assembly is not specially limited.

In order to facilitate understanding of the housing assembly of the embodiments of the present application, the housing assembly is exemplarily described as applied to a contactor.

The embodiment of the application provides a shell assembly. FIG. 1 is a top view of a housing assembly according to some embodiments of the present application. Fig. 2 is an exploded view of a housing assembly according to some embodiments of the present application. As shown in fig. 1 and 2, the housing assembly includes: base 1, base 2 and dust cover 3. Base 1 has installation cavity 10, and the roof of installation cavity 10 is equipped with accent Q, and the lateral wall is equipped with opening K. The base 2 covers the cavity opening Q. The dust cover 3 has a lap arm 31, and the base 1 and the base 2 sandwich the lap arm 31 so that the dust cover 3 covers the opening K.

The base 1 is a component of an electromagnetic system for fixing a contactor. The base 1 may include a bottom plate and two vertical walls integrally connected to the bottom plate, and the two vertical walls may be disposed opposite to each other and enclose the bottom plate to form an installation cavity 10. One side that two founds the wall and keep away from the bottom plate is the accent Q of installation cavity 10, and the side that is adjacent with accent Q and does not set up the founding wall is the opening K of installation cavity 10. When the base 1 is installed with the electromagnetic system through the installation cavity 10, the electromagnetic system can be installed in the installation cavity 10 along the cavity opening Q or the opening K.

The base 2 is a member for covering the opening Q of the mounting chamber 10 after the electromagnetic system is mounted in the mounting chamber 10. After the base 2 is covered on the cavity opening Q, part of the components in the contact system can be installed.

The dust cover 3 is a member for covering the opening K of the mounting cavity 10 after the electromagnetic system is mounted in the mounting cavity 10. The dust cover 3 may be provided with a recess facing the base 1 to accommodate a part of the components (e.g. circuit board) of the electromagnetic system after covering the opening K. In addition, behind the dust cover 3 lid closed opening K, can also block the pollutant (for example, dust, fabric etc.) in the environment, reduce the pollutant and get into inside the contactor along opening K, cause the possibility of influence to electromagnetic system.

When assembling the housing assembly, in the prior art, a connection structure (e.g., a buckle, a bolt, etc.) for connecting with the base 1 is usually disposed on the dust cover 3, and the dust cover 3 is connected to the base 1 through the connection structure, and then the base 2 is connected to the base 1. In the assembly process, firstly, the dust cover 3 needs to be connected to the base 1, and then the base 2 needs to be connected to the base 1, so that the assembly process of the dust cover 3, the base 1 and the base 2 is complex; secondly, when connecting dust cover 3 and base 1, in order to improve the firm nature that base 1 and dust cover 3 are connected, it is comparatively complicated with the connection structure setting usually, and this can lead to the structure and the processing technology of dust cover 3 complicated, and then leads to the assembly technology of dust cover 3 and base 1 complicated, makes the assembly efficiency of casing subassembly reduce.

Therefore, this application embodiment is through setting up overlap joint arm 31 on dust cover 3, through with overlap joint arm 31 direct centre gripping between base 2 and base 1, can realize the fixed to dust cover 3, for prior art through set up complicated connection structure on dust cover 3, and connect the dust cover in the base through connection structure, the structure and the processing technology of dust cover 3 have not only been simplified, the process of base 1 earlier being connected with dust cover 3 has still been saved, make base 1, base 2 and dust cover 3's assembly process have been simplified, thereby make housing assembly's assembly efficiency obtain improving.

In the embodiment of the present invention, a plurality of the overlapping arms 31 may be provided at different positions of the dust cover 3, and a plurality of the overlapping arms 31 may be clamped between different portions of the base 1 and the base 2, so as to improve the fixing efficiency of the dust cover 3. In addition, a plurality of overlap joint arms 31 all can set up to the sheet structure that has the first face and the second face that deviate from each other to, when base 1 and base 2 centre gripping overlap joint arm 31, base 1 can contact with the first face of overlap joint arm 31, base 2 can contact with the second face of overlap joint arm 31, like this, can make base 1 and base 2 and overlap joint arm 31's area of contact increase, and then make base 1 and base 2 increase the centre gripping dynamics to dust cover 3.

In addition, after the base 1 and the base 2 clamp the lapping arm 31, the base 1 and the base 2 can be connected in other ways (for example, by screw connection), so that on the basis of high connection firmness of the base 1 and the base 2, the clamping force of the base 1 and the base 2 on the lapping arm 31 is also high.

The manner in which the base 2 and the base 1 clamp the bridge arm 31 may be various, and the manner in which the base 2 and the base 1 clamp the bridge arm 31 will be described below with reference to fig. 3 to 6. Fig. 4 is a first schematic view of the pedestal 1 and the base 2 clamping the bridging arm 31, as shown in the part C in fig. 3. Fig. 5 is a second schematic view of the pedestal 1 and the base 2 clamping the overlapping arm 31 illustrated in the portion C of fig. 3. Fig. 6 is a third schematic view of the pedestal 1 and the base 2 clamping the overlapping arm 31 illustrated in the portion C of fig. 3.

In some embodiments, with reference to fig. 3 and 4, the base 1 has a top surface 11, the base 2 has a bottom surface 21, and the top surface 11 is opposite to the bottom surface 21 when the base 2 covers the cavity Q; the bridge arm 31 is sandwiched between the top surface 11 and the bottom surface 21.

The top surface 11 is a surface of the base 1 on the side where the mounting cavity 10 is provided. The bottom surface 21 is a surface of the base 2 facing the opening Q side of the mounting cavity 10 of the base 1. The top surface 11 is opposite to the bottom surface 21, which means that along the direction that the base 2 covers the cavity opening Q, the projection of the top surface 11 and the projection of the bottom surface 21 at least partially coincide, for example, partially coincide or completely coincide.

When the lapping arm 31 is clamped between the top surface 11 and the bottom surface 21, the projection of the lapping arm 31 can fall into the overlapping region of the projection of the top surface 11 and the projection of the bottom surface 21 along the direction that the base 2 covers the cavity opening Q.

It should be noted that, the top surface 11 and the bottom surface 21 may be configured as a plane with a certain roughness, so that after the lapping arm 31 is clamped by the bottom surface 21 and the top surface 11, the contact area with the top surface 11 and the bottom surface 21 is relatively larger than that when the top surface 11 and the bottom surface 21 are configured as a curved surface or other structures, and the friction force between the lapping arm 31 and the top surface 11 is relatively larger, the lapping arm 31 is not easy to slip out from between the bottom surface 21 and the top surface 11.

In the solution of this embodiment, after the overlapping arm 31 is clamped between the top surface 11 and the bottom surface 21, the overlapping arm 31 can be firmly fixed between the base 1 and the base 2 to cover the opening K.

In other embodiments, referring to fig. 3 and 5, one of the base 1 and the base 2 is provided with a groove 13 adapted to the lapping arm 31, and the other presses the lapping arm 31 when the lapping arm 31 is located in the groove 13.

In this embodiment, the base 1 may be provided with a groove 13 adapted to the overlapping arm 31, and the base 2 may press the overlapping arm 31 when the overlapping arm 31 is disposed in the groove 13. Alternatively, the base 2 may be provided with a groove 13 adapted to the overlapping arm 31, and the base 1 may press the overlapping arm 31 when the overlapping arm 31 is disposed in the groove 13. That is, the bottom wall of the groove 13 can clamp the overlapping arm 31 together with the base 1 or the base 2; wherein the bottom wall of the groove 13 refers to the wall opposite to the notch of the groove 13.

It is noted that, in a direction perpendicular to the depth of the groove 13, the dimension of the groove 13 may be greater than or equal to the dimension of the overlapping arm 31; when the size of the groove 13 is equal to that of the overlapping arm 31, the groove wall of the groove 13 can limit the overlapping arm 31, so as to reduce the possibility that the overlapping arm 31 moves in the direction perpendicular to the depth direction of the groove 13 and is separated from the groove 13.

Further, in the direction perpendicular to the depth direction of the groove 13, when the size of the groove 13 is equal to the size of the overlapping arm 31, the bottom wall of the groove 13 may be provided with a convex strip, and the surface of the overlapping arm 31 facing the bottom wall may be provided with a concave adapted to the convex strip, wherein the arrangement direction of the convex strip and the concave may be the same as the connecting line direction of the two side walls of the groove 13; or, two side walls of the groove 13 may be provided with a convex strip, and a surface of the lapping arm 31 facing the side walls may be provided with a notch adapted to the convex strip, wherein the arrangement direction of the convex strip and the notch may be the same as the direction of the notch of the groove 13; thus, when the bridging arm 31 is located in the groove 13, the convex strip can be matched with the concave opening to limit the bridging arm 31, and the possibility that the bridging arm 31 is separated from the groove 13 is reduced.

In the technical scheme of this embodiment, after the bottom wall of recess 13 and base 1 or base 2 centre gripping overlap joint arm 31, overlap joint arm 31 can be firmly fixed in between base 1 and the base 2 to close opening K.

In still other embodiments, referring to fig. 3 and 6, one of the base 1 and the base 2 is provided with a protrusion 22, the other is provided with a mounting groove 14 matching with the protrusion 22 and the lapping arm 31, and after the lapping arm 31 is placed in the mounting groove 14, the protrusion 22 presses the lapping arm 31.

In this embodiment, the base 2 may be provided with the protrusion 22, the base 1 may be provided with the mounting groove 14 adapted to the overlapping arm 31 and the protrusion 22, and after the overlapping arm 31 is disposed in the mounting groove 14, the protrusion 22 of the base 2 compresses the overlapping arm 31. Or, the base 1 may be provided with the protrusion 22, the base 2 may be provided with the mounting groove 14 adapted to the overlapping arm 31 and the protrusion 22, and after the overlapping arm 31 is sequentially disposed in the mounting groove 14, the protrusion 22 of the base 1 presses the overlapping arm 31. That is, the groove bottom of the mounting groove 14 can sandwich the lap joint arm 31 together with the projection 22; wherein, the groove bottom of the mounting groove 14 means a wall opposite to the notch of the mounting groove 14.

Similar to the above embodiment, the size of the mounting groove 14 may be greater than or equal to the protrusion 22 and greater than or equal to the size of the lap joint arm 31 in the depth direction perpendicular to the mounting groove 14; when the size of the mounting groove 14 is equal to the size of the protrusion 22 and equal to the size of the overlapping arm 31, the contact area between the groove bottom of the mounting groove 14 and the protrusion 22 and the contact area between the protrusion 22 and the overlapping arm 31 are larger, the pressing force of the groove bottom and the protrusion 22 on the overlapping arm 31 is larger, and the overlapping arm 31 is less prone to being separated from the mounting groove 14.

In addition, the groove bottom and the groove side wall of the mounting groove 14 may also be provided with the above-mentioned protruding strips, and one side of the lap joint arm 31 facing the groove bottom and one side facing the groove side wall may also be provided with notches adapted to the protruding strips, so that the lap joint arm 31 is limited by the protruding strips and the notches, and the possibility that the lap joint arm 31 comes off from the groove 13 is reduced.

In the technical solution of this embodiment, after the groove bottom of the mounting groove 14 and the protrusion 22 clamp the lapping arm 31, the lapping arm 31 can be firmly fixed between the base 1 and the base 2 to cover the opening K.

On the basis of this embodiment, furthermore, the lapping arm 31 is provided with a first guide surface for guiding when the lapping arm 31 enters the mounting groove 14; and/or the projection 22 is provided with a second guide surface for guiding the projection 22 when it enters the mounting slot 14.

The first guide surface may be provided between a side of the lap arm 31 facing the bottom of the mounting groove 14 and a side of the groove sidewall of the mounting groove 14 to guide when the lap arm 31 enters the mounting groove 14. A second guide surface may be provided between a side of the protrusion 22 facing the lap arm 31 and a side of the groove sidewall facing the mounting groove 14 to guide when the protrusion 22 enters the mounting groove 14.

It should be noted that, both the first guide surface and the second guide surface may be set to be smooth planes or cambered surfaces. To reduce friction with the groove side wall of the mounting groove 14 when the lapping arm 31 and the projection 22 enter the groove 13, so that the lapping arm 31 and the projection 22 more easily enter the mounting groove 14.

According to other embodiments of the present application, one of the base 1 and the dust cover 3 is further provided with a buckle, the other is further provided with a clamping groove adapted to the buckle, and the dust cover 3 is detachably connected to the base 1 through the buckle and the clamping groove.

In this embodiment, the base 1 may be provided with a buckle, and the dust cover 3 may be provided with a clamping groove adapted to the buckle. Or, the dust cover 3 can be provided with a buckle, and the base 1 can be provided with a clamping groove matched with the buckle.

Through above-mentioned scheme, on base 1 and 2 centre gripping overlap joint arms 31's of base basis, base 1 and dust cover 3 can also be through the buckle can dismantle the connection to improve the reliability that housing assembly connects.

According to other embodiments of the application, one of the base 1 and the dust cover 3 is further provided with a connecting column, the other is further provided with a connecting hole matched with the connecting column, and the dust cover 3 is detachably connected to the base 1 through the connecting column and the connecting hole.

In this embodiment, the base 1 can be provided with a connecting column, and the dust cover 3 can be provided with a connecting hole matched with the connecting column. Or, the dust cover 3 may be provided with a connection column, and the base 1 may be provided with a connection hole adapted to the connection column.

The connecting column can be cylindrical, correspondingly, the connecting hole can be a cylindrical hole; or the connecting column can be set to be prism-shaped, correspondingly, and the connecting hole can be set to be a prism hole. In addition, the connection hole may be a through hole or a blind hole, which is not particularly limited in the embodiment of the present application.

In the technical scheme of this embodiment, on base 1 and 2 centre gripping overlap joint arms 31's of base basis, base 1 and dust cover 3 can also be through spliced pole and connecting hole interference connection to improve the reliability that housing assembly connects.

According to other embodiments of the present application, the housing assembly further includes a bolt or a screw, the dust cover 3 is further provided with a through hole adapted to the bolt or the screw, the base 1 is further provided with a threaded hole adapted to the bolt or the screw, and one end of the bolt or the screw passes through the through hole and is fixed to the threaded hole to connect the base 1 and the dust cover 3.

The through hole may be a threaded hole or a smooth hole, which is not particularly limited in this application. The aperture of the through hole may be larger than that of the screw hole to reduce the possibility of deformation of the base 1 when the bolt or screw is coupled to the screw hole.

In the technical scheme of this embodiment, on the basis that base 1 and base 2 centre gripping overlap joint arm 31, base 1 and dust cover 3 can also pass through bolt or screw connection to improve the reliability that the casing subassembly connects.

When the housing assembly is applied to a contactor with a relatively small power, the heat dissipation of the electromagnetic system installed in the installation cavity 10 of the base 1 is small, and therefore, the dust cover 3 does not need to be detached from the base 1, and the heat dissipation requirement of the electromagnetic system can be met. However, when the housing assembly is applied to a contactor with a large power ratio, the heat dissipation of the electromagnetic system in the installation cavity 10 of the base 1 is large, and therefore, if the base 1 is not detached from the dust cover 3, heat energy generated by the electromagnetic system is easily gathered inside the base 1, and the use performance of the electromagnetic system is affected, so that the dust cover 3 and the base 1 need to be detachably connected, so that the dust cover 3 can be detached from the base 1, and heat energy generated by the electromagnetic system can be transmitted to the outside of the base 1, and the normal use performance of the electromagnetic system is ensured.

Based on this, the overlapping arm 31 of dust cover 3 is clamped through base 1 and base 2 in the embodiment of the application, and base 1 and dust cover 3 are set to be detachably connected, so that when the power of the contactor is large, overlapping arm 31 of dust cover 3 can be detached from between base 1 and base 2, and dust cover 3 can be detached from base 1, so as to meet the heat dissipation requirement of the contactor.

In addition, based on the above heat dissipation problem, according to other embodiments of the present application, please continue to refer to fig. 2, the dust cover 3 is provided with heat dissipation holes 32.

The heat dissipation holes 32 may be distributed on the dust cover 3 at intervals, and the shape of the heat dissipation holes 32 may be circular, elliptical, or square, which is not limited in the embodiment of the present application.

The heat dissipation holes 32 may be disposed opposite to the more heat dissipation components in the electromagnetic system, so that the heat generated by the components can be rapidly moved to the outside of the contactor, thereby reducing the possibility of influence on other components.

The embodiment of this application still provides a contactor, and this contactor includes aforementioned casing subassembly.

When the contactor includes the housing assembly, the beneficial effects of the housing assembly are explained in detail in the foregoing embodiments, and therefore, the embodiments of the present application are not described herein again.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A housing assembly, comprising:

the base is provided with a mounting cavity, the top wall of the mounting cavity is provided with a cavity opening, and the side wall of the mounting cavity is provided with an opening;

the base covers the cavity opening;

and the base clamp the overlapping arm so that the dust cover covers the opening.

2. The housing assembly of claim 1 wherein the base has a top surface and the base has a bottom surface, the top surface being opposite the bottom surface when the base is fitted over the opening;

the overlapping arm is clamped between the top surface and the bottom surface.

3. The housing assembly of claim 1 wherein one of the base and the base is provided with a groove that fits into the snap arm and the other presses against the snap arm when the snap arm is in the groove.

4. The housing assembly of claim 1, wherein one of the base and the base is provided with a protrusion and the other is provided with a mounting slot that mates with the protrusion and the snap arm; after the lap joint arm is arranged in the mounting groove, the protrusion compresses the lap joint arm.

5. The housing assembly of claim 4 wherein the lapping arm is provided with a first guide surface for guiding the lapping arm as it enters the mounting slot;

and/or, the bulge is provided with a second guide surface which is used for guiding when the bulge enters the mounting groove.

6. The housing assembly of claim 1, wherein one of the base and the dust cover is further provided with a snap and the other is further provided with a slot adapted to the snap, the dust cover being detachably connected to the base through the snap and the slot.

7. The housing assembly of claim 1, wherein one of the base and the dust cover is further provided with a connecting post, the other is further provided with a connecting hole adapted to the connecting post, and the dust cover is detachably connected to the base through the connecting post and the connecting hole.

8. The housing assembly of claim 1, further comprising a bolt or a screw, wherein the dust cover further has a through hole adapted to the bolt or the screw, and wherein the base further has a threaded hole adapted to the bolt or the screw, and wherein one end of the bolt or the screw passes through the through hole and is fixed to the threaded hole to connect the base and the dust cover.

9. The housing assembly of claim 1, wherein the dust shield is provided with heat dissipation apertures.

10. A contactor, characterized by comprising a housing assembly according to any of claims 1 to 9.

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