CN218548321U

CN218548321U - Contact anti-rotation structure of contactor and contactor thereof

Info

Publication number: CN218548321U
Application number: CN202223111078.XU
Authority: CN
Inventors: 张仁刚; 黄邹浩; 夏耀环; 周利凡
Original assignee: Zhejiang Aokai Electric Co ltd
Current assignee: Zhejiang Aokai Electric Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-02-28
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a contact anti-rotation structure of contactor and contactor thereof, including the casing that has the installation cavity to and but reciprocating motion sets up the moving contact in the installation cavity under the drive of electromagnetic mechanism, and fix in the casing and divide and establish two reference columns in the moving contact both sides, and be provided with in the moving contact both sides with two reference column complex two location guide ways, make the reference column extend along the axial of installation cavity and pass the location guide way. The anti-rotation structure of the contact adopting the technical scheme is simple in design and small in occupied space, and the two positioning columns are used for limiting the moving contact to rotate towards any side, so that the effect of preventing the moving contact from deflecting in the movement process is achieved, the situation that the moving contact deflects when the moving contact does reciprocating movement is guaranteed, the matching contact of the moving contact and the fixed contact is accurate and reliable, and the service life and the service performance of the direct current contactor are prolonged.

Description

Contact anti-rotation structure of contactor and contactor thereof

Technical Field

The utility model relates to an electromagnetic switch technical field, concretely relates to contactor's contact anti-rotation structure and contactor thereof.

Background

The direct current contactor is an electromagnetic switch for controlling the on-off of a large current by on-off of a small current, and the working principle is as follows: when the coil of the contactor is electrified under the action of small current, the coil generates a magnetic field, so that a main circuit is switched on or off under the action of electromagnetic force generated by the magnetic field of the coil, namely, the movable contact and the fixed contact are contacted to realize conduction, and the movable contact and the fixed contact are not contacted to realize power failure, thereby achieving the purpose of controlling large current by small current.

The conventional direct current contactor mainly comprises an electromagnetic part (a movable iron core, a static iron core and an electromagnetic coil), a contact part and an arc extinguishing part, wherein the contact part comprises a main contact structure and an auxiliary contact structure, the main contact structure comprises a static contact fixed at the bottom of a contactor shell and a movable contact which is arranged in the contactor shell and can move in a reciprocating manner relative to the static contact, an ejector rod is connected between the movable iron core and the movable contact, and the movable iron core drives the movable contact to be in contact with the static contact through the ejector rod. Therefore, the traditional direct current contactor can attract the moving contact to move and contact with the fixed contact when being electrified, but the moving contact is easy to deflect in the moving process, so that the moving contact on the moving contact deflects, and the service life of the direct current contactor can be shortened.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the moving contact among the prior art and taking place the position condition of deflecting easily at the removal in-process to cause the moving contact incline, can shorten direct current contactor life's problem like this.

In order to solve the technical problem, the utility model provides a contactor anti-rotation structure, include: a housing having a mounting cavity;

the moving contact is movably arranged in the mounting cavity and driven by the electromagnetic mechanism to reciprocate along the axial direction of the mounting cavity;

the positioning structure comprises two positioning columns which are fixed in the shell and respectively arranged on two sides of the moving contact, and two positioning guide grooves which are correspondingly arranged on two sides of the moving contact and matched with the two positioning columns, wherein the positioning columns extend through the positioning guide grooves along the axial direction of the mounting cavity.

In the contact anti-rotation structure of the contactor, the positioning column is integrally formed on the inner bottom surface of the shell in an injection molding mode.

In the contact anti-rotation structure of the contactor, the positioning column is installed on the inner bottom surface of the shell through the fixing structure.

In the contact anti-rotation structure of the contactor, the fixing structure is a threaded structure, a clamping structure, an interference structure or an adhesive structure arranged between the positioning column and the shell.

In the contact anti-rotation structure of the contactor, two protruding structures are formed in the middle positions of the two side edges of the moving contact, and the two positioning guide grooves are respectively and oppositely arranged on the two protruding structures.

In the contact anti-rotation structure of the contactor, the two positioning guide grooves are arc grooves formed on the two protruding structures.

In the contact anti-rotation structure of the contactor, the mounting cavity comprises a contact groove area provided with a group of fixed contacts matched with the moving contact and two mounting groove areas arranged on two sides of the contact groove area, and the two positioning columns are cylindrical structures made of metal materials and arranged in the two mounting groove areas.

The utility model also provides a contactor, including moving contact, static contact, electromagnetic mechanism and any one of the aforesaid contact anti-rotation structure, electromagnetic mechanism have penetrate in the installation cavity of casing with the elasticity push rod structure that the moving contact links to each other.

In the foretell contactor, electromagnetic mechanism includes coil structure and the relative quiet iron core that sets up in coil structure's inner chamber and moves the iron core, elasticity push rod structure sets up including the linkage in moving the iron core and extending the push rod of quiet iron core along the axial extension of installation cavity, and the cover is located spring structure on the push rod, spring structure's one end butt in on the quiet iron core, its other end butt is in move in the fashioned positioning groove of iron core.

The utility model discloses technical scheme compares in prior art has following advantage:

1. the utility model provides an among the contact anti-rotation structure of contactor, through being provided with two reference columns that are located the moving contact both sides in the casing, and correspond and be provided with two location guide ways in the moving contact both sides, make two reference columns extend respectively along the axial of installation cavity and pass two location guide ways, the benefit of design lies in like this, be used for restricting the moving contact to take place to rotate to arbitrary side through two reference columns, thereby the moving contact to play the effect of preventing deflecting in the motion process, can not take place the moving contact incline the condition when guaranteeing the moving contact to do reciprocating motion along the axial of installation cavity, ensure to move, the static contact cooperation contact is accurate reliable, this kind of contact anti-rotation structure design is simple, installation convenient to use, occupation space is little again, thereby help promoting DC contactor's life and performance.

2. The utility model provides an among the contact rotation-proof structure of contactor, this kind of reference column can adopt the interior bottom surface of the fixed casing of integrative mode of moulding plastics, and the shaping is made conveniently, and structural stability is good, is favorable to improving the installation effectiveness, and obviously, this reference column can also install at the interior bottom surface of casing through fixed knot structure, and this kind of fixed knot constructs can be for modes such as joint structure or screw thread structure or interference structure, and is visible from this, the reference column has multiple mounting form on the casing, can select according to the installation demand, installs also convenient and fast.

3. The utility model provides an among the contactor, it is provided with as above contact anti-rotating structure, therefore have naturally because of setting up all advantages that above-mentioned contact anti-rotating structure brought, be through elasticity push rod structural connection moving contact according to electromagnetic mechanism to at the drive of circular telegram during operation the moving contact is to being close to static contact one side and removing, can prevent effectively that the moving contact from taking place the phenomenon of deflecting when removing through contact anti-rotating structure at this in-process, accurate with the cooperation contact of guaranteeing moving contact and static contact, prevent to take place the contact skew or the bad condition of contact between two contacts, use safe and reliable more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic plan view of a contact rotation preventing structure of a contactor according to the present invention;

fig. 2 is a schematic view of the installation structure of the positioning column of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of a contactor according to the present invention;

description of reference numerals: 1. a housing; 11. a mounting cavity; 12. installing a groove area; 2. a moving contact; 21. a raised structure; 3. a positioning column; 4. a positioning guide groove; 5. an electromagnetic mechanism; 51. a coil structure; 52. a movable iron core; 53. a stationary iron core; 6. a push rod; 7. and a spring structure.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the present embodiment provides a contact rotation preventing structure of a contactor as shown in fig. 1 to 3, including:

a housing 1 having a mounting cavity 11;

the moving contact 2 is movably arranged in the mounting cavity 11 and driven by the electromagnetic mechanism 5 to reciprocate along the axial direction of the mounting cavity 11;

the positioning structure comprises two positioning columns 3 which are fixed in the shell 1 and are respectively arranged on two sides of the moving contact 2, and two positioning guide grooves 4 which are correspondingly arranged on two sides of the moving contact 2 and are matched with the two positioning columns 3, wherein the positioning columns 3 extend through the positioning guide grooves 4 along the axial direction of the installation cavity 11.

The above embodiment is the core technical scheme of this embodiment, two positioning columns 3 located at two sides of the moving contact 2 are arranged in the housing 1, and two positioning guide grooves 4 are correspondingly arranged at two sides of the moving contact 2, so that the two positioning columns 3 respectively extend through the two positioning guide grooves 4, and the moving contact 2 is limited to rotate towards any side by the two positioning columns 3, so that the moving contact can play a role of preventing deflection in the motion process, the moving contact is ensured not to deflect when reciprocating along the axial direction of the installation cavity, and the matching and contact of the moving contact and the static contact are ensured to be accurate and reliable.

As shown in fig. 1, two protruding structures 21 are formed at the middle positions of the two side edges of the movable contact 2, two positioning guide grooves 4 are respectively and oppositely arranged on the two protruding structures 21, specifically, the two positioning guide grooves 4 are arc grooves formed on the two protruding structures 21, and an anti-rotation effect is achieved on the movable contact through the cooperation of the arc grooves and the positioning columns.

As a specific structural arrangement, the mounting cavity 11 includes a contact groove area provided with a group of fixed contacts matched with the movable contact 2, and two mounting groove areas 12 arranged at two sides of the contact groove area, the movable contact 2 moves up and down in the contact groove area along the axial direction of the mounting cavity 11, and the two positioning columns 3 are made of metal materials and are arranged in the cylindrical structures of the two mounting groove areas 12, so that the positioning columns are designed to not interfere with the normal movement of the movable contact.

In this embodiment, the contactor is a direct current contactor structure, and according to the cylindrical structure that reference column 3 was made for metal material, refer to fig. 2, this kind of reference column 3 is preferred integrative injection moulding be in the interior bottom surface of casing 1, the shaping is made conveniently, and structural stability is good, is favorable to improving the installation effectiveness. Obviously, the positioning column 3 can also be installed on the inner bottom surface of the housing 1 through a fixing structure, wherein the fixing structure can preferably be a clamping structure arranged between the positioning column 3 and the housing 1, and the clamping structure includes a clamping groove structure arranged on the housing 1, and a buckle structure arranged at the bottom of the positioning column 3 and adapted to be clamped in the clamping groove structure; alternatively, the fixing structure can be selected as a thread structure, and the thread structure comprises a threaded hole arranged in the shell 1 and a threaded end arranged at the bottom of the positioning column 3 and fastened in the threaded hole; or, the fixing structure can also be an interference structure, the interference structure comprises an interference mounting hole arranged in the shell, the positioning column 3 is tightly fitted and inserted in the interference mounting hole to form interference fit, namely the positioning column 3 and the interference mounting hole are matched in size to meet the fastening and mounting requirements; certainly, the fixing structure can also be an adhesive structure arranged between the positioning column 3 and the housing 1, the adhesive structure comprises an adhesive filled in a mounting hole formed in the housing 1, the positioning column 3 is fully contacted with the adhesive after being inserted into the mounting hole, and the positioning column is installed and fixed after being solidified by the adhesive. Therefore, the positioning column 3 can be installed and fixed in any mode of a clamping structure, a thread structure, an interference structure or an adhesive structure, and the positioning column is designed to have multiple installation forms on the shell, can be selected according to installation requirements, and is convenient and fast to install. A person skilled in the art can select a specific arrangement manner of the positioning pillars according to the above description, and details of other equivalent embodiments are not repeated herein.

Example 2

The present embodiment provides a contactor as shown in fig. 3, which includes a moving contact 2, a fixed contact, an electromagnetic mechanism 5 and a contact rotation preventing structure described in embodiment 1, where the electromagnetic mechanism 5 includes a coil structure 51, a fixed iron core 53 and a movable iron core 52 that are relatively disposed in an inner cavity of the coil structure 51, and an elastic push rod structure that penetrates through an installation cavity 11 of the housing 1 and is connected to the moving contact 2, the elastic push rod structure includes a push rod 6 that is disposed in a linkage manner on the movable iron core 52 and extends through the fixed iron core 53 along an axial direction of the installation cavity, and a spring structure 7 that is sleeved on the push rod 6, one end of the spring structure abuts against the fixed iron core 53, and the other end of the spring structure abuts against a positioning groove formed in the movable iron core 52, and this structural design positions and installs the spring structure between the fixed iron core 53 and the movable iron core 52, and transmits motion and force between the movable iron core and the moving contact by using the push rod 6, so that when the electromagnetic mechanism is powered on, the moving iron core drives the moving contact to move upward under the driving force of the moving contact, thereby the moving contact and the moving iron core are separated from the restoring structure when the electromagnetic force is powered on the electromagnetic mechanism.

The contactor adopting the technical scheme has all advantages brought by the arrangement of the terminal clamp device naturally by arranging the contact anti-rotation structure, the electromagnetic mechanism 5 is connected with the moving contact 2 through the elastic push rod structure and drives the moving contact to move towards one side close to the static contact when in power-on work, and the deflection phenomenon of the moving contact when moving can be effectively prevented through the contact anti-rotation structure in the process, so that the moving contact is ensured to be accurately matched with the static contact, the condition of contact deflection or poor contact between the two contacts is prevented, and the contactor is safer and more reliable to use.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A contact rotation-preventing structure of a contactor is characterized by comprising:

a housing (1) having a mounting cavity (11);

the moving contact (2) is movably arranged in the mounting cavity (11) and driven by the electromagnetic mechanism (5) to reciprocate along the axial direction of the mounting cavity (11);

the positioning structure comprises two positioning columns (3) which are fixed in the shell (1) and are respectively arranged on two sides of the moving contact (2), and two positioning guide grooves (4) which are correspondingly arranged on two sides of the moving contact (2) and are matched with the two positioning columns (3), wherein the positioning columns (3) extend through the positioning guide grooves (4) along the axial direction of the installation cavity.

2. A contact rotation preventing structure of a contactor according to claim 1, wherein: the positioning column (3) is integrally formed on the inner bottom surface of the shell (1) in an injection molding mode.

3. A contact rotation preventing structure of a contactor according to claim 2, wherein: the positioning column (3) is installed on the inner bottom surface of the shell (1) through a fixing structure.

4. A contact rotation preventing structure of a contactor according to claim 3, wherein: the fixing structure is a thread structure or a clamping structure or an interference structure or an adhesive structure arranged between the positioning column (3) and the shell (1).

5. A contact rotation preventing structure of a contactor according to any one of claims 1 to 4, wherein: two protruding structures (21) are formed in the middle of the two side edges of the moving contact (2), and the two positioning guide grooves (4) are respectively and oppositely arranged on the two protruding structures (21).

6. A contact rotation preventing structure of a contactor according to claim 5, wherein: the two positioning guide grooves (4) are arc grooves formed on the two protruding structures (21).

7. The contact anti-rotation structure of the contactor according to claim 6, wherein: the mounting cavity (11) comprises a contact groove area provided with a group of fixed contacts matched with the moving contact (2) and two mounting groove areas (12) arranged on two sides of the contact groove area, and the two positioning columns (3) are made of metal materials and are of cylindrical structures arranged in the two mounting groove areas (12).

8. A contactor is characterized by comprising a moving contact (2), a fixed contact, an electromagnetic mechanism (5) and a contact anti-rotation structure as claimed in any one of claims 1 to 7, wherein the electromagnetic mechanism (5) is provided with an elastic push rod structure which penetrates into an installation cavity of a shell (1) and is connected with the moving contact.

9. A contactor according to claim 8, wherein: electromagnetic mechanism (5) include coil structure (51) and relative quiet iron core (53) of setting in the inner chamber of coil structure (51) and move iron core (52), elasticity push rod structure sets up including the linkage in moving iron core (52) and extending push rod (6) of quiet iron core (53) along the axial of installation cavity, and the cover is located spring structure (7) on push rod (6), spring structure's one end butt in on quiet iron core (53), its other end butt is in move in the fashioned positioning groove of iron core (52).