CN218782979U - Contactor shell and contactor - Google Patents

Abstract

The application relates to the technical field of contactors, in particular to a contactor shell and a contactor, which comprise a shell, wherein a wiring port is formed in the shell, the contactor shell further comprises a guide part and a dustproof plate, the guide part is arranged on the shell, the dustproof plate is connected with the shell through the guide part, the guide part is used for guiding the dustproof plate to move along a preset path, and the preset path passes through the wiring port, so that the wiring port can be closed or opened when the dustproof plate moves; so, can be through following the removal dust guard of predetermineeing the route for the dust guard can carry out the shutoff to the wiring mouth, prevents inside the dust gets into contactor from the wiring mouth, thereby improves contactor dustproof effect, makes contactor in the use, and the inside dust that is difficult for piling up of contactor can make contactor be difficult for producing the noise in the use, prolongs the life of contactor.

Description

Contactor shell and contactor

Technical Field

The application relates to the technical field of contactors, in particular to a contactor shell and a contactor.

Background

The contactor is widely applied to low-voltage circuits, is an industrial necessity which is safe to use, convenient to control, large in quantity and wide in range, and has the working principle that when an electromagnetic coil of the contactor is not electrified, the contact of a moving contact and a static contact are kept at an off position by the counter-acting force of a spring and the self weight of an armature. When the electromagnetic coil is connected with a control voltage (generally a rated voltage) through a control circuit, the electromagnetic force overcomes the counterforce of the spring to attract the armature to the magnetic yoke, and drives the moving contact to move towards the fixed contact, so that the contact is closed, and the circuit is connected.

The existing contactor is widely used as a power breaking and control circuit, and the circuit is opened and closed by using a contact, but along with the use of the contactor, because the structure of the contactor is unreasonable, the dust accumulation speed in the contactor is high, and the service life of the contactor is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, this application embodiment provides a contactor shell and contactor, and it shelters from the wiring mouth through the dust guard for the wiring mouth is the encapsulated situation, can prevent that the dust from the wiring mouth department entering wire connector inside, improves the dustproof effect of contactor.

The embodiment of the application provides a contactor shell, including the casing, be equipped with the wiring mouth on the casing, still include guide part and dust guard, on the casing was located to the guide part, the dust guard passed through the guide part and is connected with the casing, and the guide part is used for guiding the dust guard along predetermineeing the route and removes, predetermines the route and passes through the wiring mouth for can seal or open the wiring mouth when the dust guard removed.

In the above embodiment, when the wiring is required, the dust-proof plate is moved along the preset path, and the dust-proof plate is moved away from the wiring port, so that the wiring port is in an open state; when needing to prevent dust to the wiring mouth, remove the removal dust guard along predetermineeing the route, remove the dust guard to wiring mouth department for the dust guard carries out the shutoff to the wiring mouth, thereby makes the wiring mouth be the encapsulated situation, with the inside dust of reduction through wiring mouth entering contactor, thereby improves dustproof effect.

In some embodiments of this application, be equipped with spacing subassembly on the casing, be equipped with the mounting on the dust guard, spacing subassembly and mounting cooperation for fix the dust guard in predetermined position department.

In the above embodiment, when the dust guard removed preset position department, the mounting will be fixed the dust guard with spacing subassembly cooperation to the prevention dust guard continues to remove, can fix the dust guard at preset position department like this, avoids the dust guard to remove at will, uses or dustproof effect causes the influence to the contactor.

In some embodiments of the present application, the limiting assembly includes a limiting plate, the limiting plate is connected to the housing, and a gap is provided between a portion of the limiting plate and a sidewall of the housing for the dust guard to move; when the dust guard removed to the mounting and was located the clearance, the mounting can cooperate with the limiting plate of the clearance both sides that correspond or the lateral wall of casing, fixes the dust guard.

In the above embodiment, when the dust guard removed along predetermineeing the route, will pass through the polylith limiting plate, when the part that the dust guard was equipped with the mounting removed to the clearance in, the mounting will cooperate with the limiting plate that is located corresponding clearance both sides or the lateral wall of casing to fixed dust guard avoids the dust guard to remove at will, influences the use or the dustproof effect of connector.

In some embodiments of the application, the limiting plates are provided with a plurality of limiting plates, the limiting plates include a first limiting plate and a second limiting plate, the first limiting plate and the second limiting plate are respectively arranged on two opposite sides of the wiring port along a preset path, and when the wiring port is opened, the fixing piece is positioned in a gap between the first limiting plate and the side wall of the shell; when the wiring port is closed, the fixing piece is positioned in a gap between the second limiting plate and the side wall of the shell.

In the above embodiment, during wiring, the dust guard is moved, so that the part of the dust guard, which is provided with the fixing piece, moves into the gap between the first limiting plate and the side wall of the shell, the dust guard is fixed, and the wiring port is opened, so that the contactor can conveniently perform wiring through the wiring port; when the wiring port is in an idle state, the dustproof plate is moved, so that the part of the dustproof plate, which is provided with the fixing piece, moves into a gap between the second limiting plate and the side wall of the shell, the dustproof plate is fixed, the idle wiring port is sealed, and dust is prevented from entering the contactor through the idle wiring port; thus, the dustproof effect of the contactor shell can be improved.

In some embodiments of this application, the mounting is including setting up the arch on the dust guard, and when the arch was located the clearance, the limiting plate or the cooperation of casing lateral wall butt of protruding and the clearance both sides that correspond were fixed the dust guard.

In the above embodiment, when dust guard and arch were located the clearance, protruding limiting plate or the cooperation of casing lateral wall butt with the clearance both sides that correspond for can reach interference fit's effect between dust guard and the clearance, in order to prevent the dust guard to remove, realize the fixed to dust guard, simple structure and convenient operation like this.

In some embodiments of the present application, the protrusions are resilient protrusions.

In the above embodiment, when the dustproof plate moves the elastic bulge and removes in the clearance, the elastic bulge receives the extrusion of limiting plate or casing lateral wall and will produce deformation for the elastic bulge is changeed in removing to the clearance, and because the friction between elastic bulge and limiting plate or the casing lateral wall is elastic friction, can reduce dustproof plate and move the elastic bulge when removing between limiting plate and casing lateral wall, the wearing and tearing that the elastic bulge received, thereby increase contactor housing's life.

In some embodiments of the present application, the protrusion is a bar and perpendicular to the predetermined path.

In the above embodiment, can pass through under protruding and stopper interference fit's the condition at the dust guard, increase the dust guard at the frictional force that receives along spout moving direction, improve the fixed effect to the dust guard.

In some embodiments of the present application, the sliding groove penetrates through a side wall of the housing to form an assembly opening, the assembly opening faces the base of the contactor, and at least part of the dust guard is disposed in the sliding groove.

In the above embodiment, through the assembly opening, can assemble the dust guard to the spout in, later with casing and base assembly together to carry out the shutoff through the base to the assembly opening, prevent the dust guard and break away from with the spout, can realize the assembly of contactor shell and base, convenient assembling can improve assembly efficiency.

In some embodiments of this application, the dust guard is close to the outside one side of casing and is equipped with the portion of sliding, can drive the dust guard removal with external force effect portion of sliding.

In the above-mentioned embodiment, with external force action in the portion of sliding, remove the dust guard through the portion of sliding, convenience when can improving the dust guard and remove, the operation of being more convenient for.

Embodiments of the present application further provide a contactor including a contactor housing and a base as in any of the above embodiments, the base being connected to a housing in the contactor housing.

In the above-mentioned embodiment, the contactor shell can seal the wiring mouth, reduces the dust that gets into the contactor inside through the wiring mouth to improve dustproof effect.

The embodiment of the application provides a contactor shell and contactor can be through following the dust guard of predetermineeing the route removal for the dust guard can carry out the shutoff to the wiring mouth, prevents inside the dust gets into contactor from the wiring mouth, thereby improves the dustproof effect of contactor, makes contactor in the use, and the inside dust that is difficult for piling up of contactor can make the contactor be difficult for producing the noise in the use, prolongs the life of contactor.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and the embodiments of the present application can be implemented according to the content of the description in order to make the technical means of the embodiments of the present application more clearly understood, and the detailed description of the present application is provided 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 based on the drawings without creative efforts.

FIG. 1 is a sectional view of a contactor housing according to an embodiment of the present application;

FIG. 2 is an enlarged view of the portion A in FIG. 1;

FIG. 3 is a schematic view of a portion of a contactor housing according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a contactor according to an embodiment of the present application.

Description of the drawings:

1. a housing; 11. a chute; 12. a dust-proof plate; 121. a protrusion; 122. a sliding part; 13. a first limit plate; 14. a second limiting plate; 15. an assembly port; 2. a wiring port; 3. a base.

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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the drawings are intended to cover, but not to exclude, other elements. The word "a" or "an" does not exclude the presence of a plurality.

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: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the circuit breaker of the present application. For example, in the description of the present application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for the convenience of description and simplicity of description only, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application.

Further, expressions of indication directions such as an X direction, a Y direction, and a Z direction, which are used to explain operations and configurations of each member of the circuit breaker of the present embodiment, are not absolute but relative, and although these indications are appropriate when each member of the battery pack is in the positions shown in the drawings, when the positions are changed, the directions should be interpreted differently to correspond to the changes.

Furthermore, the terms "first," "second," and the like in the description and claims of the present application or in the above-described drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential order, and may explicitly or implicitly include 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" means two or more (including two).

In the description of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., "connected" or "connected" of a mechanical structure may refer to a physical connection, e.g., a physical connection may be a fixed connection, e.g., a fixed connection by a fastener, such as a screw, bolt, or other fastener; the physical connection can also be a detachable connection, such as a mutual snap-fit or snap-fit connection; the physical connection may also be an integral connection, for example, a connection made by welding, gluing or integrally forming the connection. "connected" or "coupling" of circuit structures may mean not only physical coupling but also electrical or signal coupling, for example, direct coupling, i.e., physical coupling, or indirect coupling via at least one element therebetween, as long as electrical communication is achieved, or communication between the two elements; signal connection may refer to signal connection through a medium, such as radio waves, in addition to signal connection through circuitry. 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.

As shown in fig. 1, the embodiment of the present application provides a contactor housing, which includes a housing 1, a guide portion and a dust guard 12, where the housing 1 is provided with a wiring port 2, the guide portion is provided on the housing, the dust guard 12 is connected with the housing 1 through the guide portion, the guide portion is used to guide the dust guard 12 to move along a preset path, and the preset path passes through the wiring port 2, so that the wiring port 2 can be closed or opened when the dust guard 12 moves. The guiding portion may be configured as a rotating shaft, the dust guard 12 is fixed on the housing 1 through the rotating shaft, and the wiring port 2 is provided in a circular region formed by the dust guard 12 rotating around the rotating shaft as a center of circle, at this time, the preset path refers to the circular region formed by the dust guard 12 rotating around the rotating shaft as a center of circle.

In some embodiments of the present application, the guide portion is configured as a chute 11, at least a portion of the dust-proof plate 12 being disposed within the chute 11; at this time, the preset path refers to an area through which the dust-proof plate 12 passes when the dust-proof plate 12 slides from one end of the chute 11 to the other end of the chute 11; in practical application, when wiring is needed, the dust-proof plate 12 slides in the sliding groove 11, so that the dust-proof plate 12 moves along the direction far away from the wiring port 2, and the wiring port 2 is in an open state; when needs carry out dustproof processing to wiring mouth 2, slide dust guard 12 in spout 11, move dust guard 12 towards wiring mouth 2 for dust guard 12 carries out the shutoff to wiring mouth 2, thereby makes wiring mouth 2 be the encapsulated situation, reduces the dust that gets into the contactor inside through wiring mouth 2, thereby improves dustproof effect.

It should be noted that the connection mode of the dust-proof plate 12 and the chute 11 may be direct connection or indirect connection, the direct connection may be that the dust-proof plate 12 is integrally located in the chute 11, and the side wall of the dust-proof plate 12 abuts against the inner side wall of the chute 11, at this time, the wiring port 2 may be opened on the bottom wall of the chute 11 and is close to the base 3; the indirect connection may be that a sliding block is disposed on the dust-proof plate 12, and the sliding block is connected to the sliding groove 11 in a sliding manner, so as to connect the dust-proof plate 12 to the sliding groove 11, where at least a part of the dust-proof plate 12 refers to the sliding block. When the wiring port 2 is plugged by the dust-proof plate 12, the side wall of the dust-proof plate 12 is attached to the edge area of the wiring port 2, so that dust is prevented from entering the contactor from a gap between the dust-proof plate 12 and the edge area of the wiring port 2.

In some embodiments of the present application, as shown in fig. 2 and 4, the sliding groove 11 penetrates through the side wall of the housing 1 to form the assembly opening 15, the assembly opening 15 faces the base 5 of the contactor, at this time, the dust guard 2 can be assembled into the sliding groove 11 through the assembly opening 15, then the housing 1 and the base 3 are assembled together, so that the assembly opening 15 is sealed through the base 3, the dust guard 2 can be prevented from being separated from the sliding groove 11, the assembly of the contactor housing and the base 3 can be realized, the assembly is convenient, and the assembly efficiency can be improved.

As shown in fig. 1 and fig. 2, in some embodiments of the present application, a limiting component is disposed on the housing 1, and a fixing component is disposed on the dust-proof plate 12, and the limiting component and the fixing component cooperate to fix the dust-proof plate 12 at a predetermined position. Wherein, spacing subassembly can be along predetermineeing the recess of route seting up on casing 1, and the mounting can be that the setting is close to the spring of casing 1 one side at dust guard 12 and jump the beans, and when the part that dust guard 12 was equipped with the spring and jumps the beans removed the opening part to the recess, the spring jumps the beans and will insert to the recess under the spring action in, fixes dust guard 12 for dust guard 12 can't remove along predetermineeing the route when not receiving the exogenic action. Mounting and spacing subassembly cooperation are fixed dust guard 12, can fix dust guard 12 in predetermineeing position department, avoid dust guard 12 to remove at will, cause the influence to contactor's use or dustproof effect.

In some embodiments of the present application, the limiting assembly includes a limiting plate, the limiting plate is connected to the housing 1, and a gap is provided between a portion of the limiting plate and a sidewall of the housing 1 for the dust guard 2 to move; when dust guard 2 removed to the mounting and was located the clearance, the mounting can cooperate with the limiting plate of the clearance both sides that correspond or the lateral wall of casing 1, fixes dust guard 2. Wherein, when the two ends of the limiting plate are connected with the housing 1, a gap is provided between the middle portion of the limiting plate and the sidewall of the housing 1, and at this time, the portion of the limiting plate means the middle portion of the limiting plate.

In some optional embodiments, the limiting plates are provided with a plurality of limiting plates, the plurality of limiting plates comprise a first limiting plate 13 and a second limiting plate 14, the first limiting plate 13 and the second limiting plate 14 are respectively arranged on two opposite sides of the wire connection port 2 along a preset path, the fixing piece is arranged on the dust-proof plate 12, and when the wire connection port 2 is opened, the fixing piece is positioned in a gap between the first limiting plate 13 and the side wall of the shell 1; when the wire connection port 2 is closed, the fixing piece is positioned in a gap between the second limiting plate 14 and the side wall of the shell 1. Like this, make in the part that dust guard 12 was equipped with the mounting removes the clearance between first limiting plate 13 and the casing 1 lateral wall, wiring mouth 2 will be the open mode, make in the part that dust guard 12 was equipped with the mounting removes the clearance between second limiting plate 14 and the casing 1 lateral wall, wiring mouth 2 will be the encapsulated situation, inside in order to prevent the dust to get into the contactor through idle wiring mouth 2, so, can be under the unchangeable condition of the volume of contactor shell keeps, improve the dustproof effect of contactor shell. It should be noted that, the plugging degree of the interface 2 after the dust-proof plate 12 is fixed is determined by the position of the limiting plate, and the number and the position of the limiting plate can be determined according to the actual requirement, such as: the position of limiting plate can be confirmed according to the specification of power cord, and the quantity of limiting plate can be confirmed according to the power cord specification that the contactor can support, and this application embodiment does not do the restriction. For example, the limiting plate may be three, and when the part of the dust-proof plate 12 provided with the fixing member is located in a gap between any one of the three limiting plates and the housing 1, the dust-proof plate 12 may completely block the wire connection port 2, or only block a partial area of the wire connection port 2, or not block the wire connection port 2. So, after the wiring, can be according to the specification of power cord, remove dust guard 12 and carry out the shutoff to the subregion of wiring mouth 2, only open the region that can supply the power cord to pass, can reduce the bore of wiring mouth 2 like this under the condition that does not influence the wiring, and then reduce the dust that gets into the contactor inside through wiring mouth 2, improve dustproof effect. The mounting can be the magnet that sets up at limiting plate and dust guard 12 and limiting plate overlap portion department, and when the part that dust guard 12 was equipped with the mounting passed through the opening and moves to the clearance in, dust guard 12 will be connected with the limiting plate magnetism through magnet for dust guard 12 can't follow the route removal of predetermineeing when not receiving the exogenic action.

As shown in fig. 2 and 3, in some embodiments of the present application, the fixing member includes a protrusion 121 disposed on the dust-proof plate 12, and when the protrusion 121 is located in the gap, the protrusion 121 is in abutting engagement with the limiting plate or the side wall of the housing 1 on both sides of the corresponding gap, so as to fix the dust-proof plate 2. In practical application, when arch 121 was located the clearance, arch 121 will be close to the lateral wall butt of casing 1 with the limiting plate, perhaps, be close to the lateral wall butt of limiting plate with casing 1 for dust guard 12 can reach through arch 121 with clearance interference fit's effect, in order to prevent dust guard 12 to remove, realizes the fixed to dust guard 12, simple structure and convenient operation like this. Wherein, arch 121 is the strip to the route is predetermine to the perpendicular to, can increase the dust guard 12 at the frictional force that receives along 11 moving direction of spout under the dust guard 12 passes through arch 121 and stopper interference fit's the condition like this, improves the fixed effect to dust guard 12.

In some embodiments of the present application, the protrusion 121 is a resilient protrusion 121; illustratively, the protrusion 121 may be made of rubber. So, when the part that dust guard 12 was equipped with arch 121 moved between limiting plate and the casing 1, elastic bulge 121 received limiting plate or casing 1's extrusion will produce deformation for elastic bulge 121 changes in moving between limiting plate and the casing 1, and because the friction between elastic bulge 121 and the limiting plate is elastic friction, can reduce the wearing and tearing that arch 121 removed the in-process and received between limiting plate and casing 1, thereby increases contactor shell's life. It should be noted that the cross-sectional area of the protrusion 121 along the length direction gradually increases from the edge to the highest point; for example, the cross section of the protrusion 121 generated in the direction perpendicular to the length direction may be a sector, a trapezoid, or the like, so that the protrusion 121 is moved to between the limiting plate and the housing 1 along with the dust-proof plate 12, thereby fixing the dust-proof plate 12.

In some embodiments of the present application, the dust-proof plate 12 is provided with a sliding portion 122, and an external force is applied to the sliding portion 122 to drive the dust-proof plate 12 to move. The sliding part 122 may be any structure that can drive the dust guard 12 to move by applying an external force to the sliding part 122; for example, the sliding part 122 may be a circular groove provided on the side of the dust-proof plate 12 away from the housing 1, or may be an anti-slip pattern provided on the side wall of the dust-proof plate 12. The arrangement of the sliding part 122 can improve the convenience when the dust guard 12 moves, and is more convenient to operate.

The working principle of the embodiment of the application is as follows: through removing dust guard 12 along predetermineeing the route, change the position of dust guard 12 for dust guard 12 can carry out the shutoff to wiring mouth 2, prevents inside the dust gets into the contactor from wiring mouth 2, thereby improves the dustproof effect that is equipped with the contactor of this contactor shell, makes the contactor in the use, and the dust is difficult for piling up in the contactor is inside, can make the contactor be difficult for producing the noise in the use, prolongs the life of contactor.

As shown in fig. 4, the present embodiment further provides a contactor, which includes a contactor housing and a base 3 according to any one of the above embodiments, wherein the base 3 is connected to the housing 1 in the contactor housing.

The working principle of the embodiment of the application is as follows: remove dust guard 12 on the contactor shell along predetermineeing the route, change the position of dust guard 12 for dust guard 12 can carry out the shutoff to wiring mouth 2, prevents inside the dust gets into the contactor from wiring mouth 2, thereby improves the dustproof effect of contactor, makes the contactor in the use, and the inside dust that is difficult for piling up of contactor can make the contactor be difficult for producing the noise in the use, prolongs the life of contactor.

Those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

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. The utility model provides a contactor shell, includes the casing, be equipped with wiring mouth on the casing, its characterized in that still includes guide part and dust guard, the guide part is located on the casing, the dust guard passes through the guide part with the casing is connected, the guide part is used for the guide the dust guard removes along predetermineeing the route, predetermine the route and pass through wiring mouth makes can seal or open when the dust guard removes wiring mouth.

2. The contactor housing as claimed in claim 1, wherein a stop assembly is provided on the housing and a fixing member is provided on the dust guard, the stop assembly and the fixing member cooperating to fix the dust guard at a predetermined position.

3. The contactor housing as claimed in claim 2, wherein the position limiting assembly comprises a position limiting plate, the position limiting plate is connected to the casing, and a gap is provided between a portion of the position limiting plate and a side wall of the casing for the dust guard to move; when the dust guard moves to the mounting is located in the clearance, the mounting can with the limiting plate of clearance both sides or the lateral wall cooperation of casing, it is right the dust guard fixes.

4. The contactor housing as claimed in claim 3, wherein the plurality of limiting plates comprises a first limiting plate and a second limiting plate, the first limiting plate and the second limiting plate are respectively disposed along the predetermined path at two opposite sides of the wire connection port, and when the wire connection port is opened, the fixing member is located in the gap between the first limiting plate and the sidewall of the housing; when the wiring port is closed, the fixing piece is located in the gap between the second limiting plate and the side wall of the shell.

5. The contactor housing as claimed in claim 3, wherein the fixing member comprises a protrusion disposed on the dust guard, and when the protrusion is located in the gap, the protrusion is in abutting engagement with the corresponding limiting plate or the housing sidewall on both sides of the gap to fix the dust guard.

6. The contactor housing as claimed in claim 5, wherein the protrusions are resilient protrusions.

7. The contactor housing as claimed in claim 5, wherein said projections are bar-shaped and perpendicular to said predetermined path.

8. The contactor housing as claimed in claim 1, wherein the guide is configured as a slide slot forming a mounting opening through a side wall of the housing, the mounting opening facing a base of the contactor, at least part of the dust guard being disposed within the slide slot.

9. The contactor housing as claimed in claim 1, wherein a sliding portion is provided on a side of the dust guard adjacent to the outside of the casing, and the dust guard can be driven to move by applying an external force to the sliding portion.

10. A contactor, comprising a contactor housing according to any of claims 1-9 and a base, said base being connected to a housing in said contactor housing.

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