CN112837953A - Mechanical interlocking structure and multi-stage contactor - Google Patents
Mechanical interlocking structure and multi-stage contactor Download PDFInfo
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- CN112837953A CN112837953A CN202110254939.0A CN202110254939A CN112837953A CN 112837953 A CN112837953 A CN 112837953A CN 202110254939 A CN202110254939 A CN 202110254939A CN 112837953 A CN112837953 A CN 112837953A
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- 230000009471 action Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 210000000078 claw Anatomy 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 9
- 238000000429 assembly Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
- H01H50/323—Latching movable parts mechanically for interlocking two or more relays
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- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a mechanical interlocking structure and a multistage contactor comprising the same, and belongs to the technical field of low-voltage control electric appliances. The mechanical interlocking structure comprises an interlocking piece and a locking piece arranged on the interlocking piece, wherein the locking piece comprises an elastic arm and an interlocking head arranged at one end of the elastic arm; the interlocking heads are provided with a pair of interlocking heads which are respectively arranged towards one side of the interlocking piece in a protruding mode. The mechanical interlocking structure is fixedly arranged between two adjacent contactors, meanwhile, the contact assemblies of the two adjacent contactors are respectively provided with a boss protruding towards the interlocking piece, and the bosses can be matched with elastic lock catches of the interlocking heads in the process that the contact assemblies move back and forth, so that the interlocking function between the multi-stage contactors can be realized; compared with the structural design that an additional fixing device is needed to fix the interlocking piece on the contactor body in the prior art, the interlocking device has the advantages of simpler structure and more convenient assembly, and the interlocking action is simple and stable, so that the safety and reliability of circuit control are ensured.
Description
Technical Field
The invention relates to the technical field of low-voltage control electric appliances, in particular to a mechanical interlocking structure and a multistage contactor comprising the same.
Background
The contactor is also called as an electromagnetic switch and is applied to electric power, power distribution and power utilization occasions. The contactor is an electric appliance which utilizes a coil to flow current to generate a magnetic field and drives a moving contact to be closed or opened through a connecting mechanism so as to control a load. The working principle of the contactor is as follows: when the coil of the contactor is electrified, the coil current can generate a magnetic field, and the generated magnetic field enables the static iron core to generate electromagnetic attraction to attract the movable iron core and drive the contact of the alternating current contactor to act. When the coil is powered off, the electromagnetic attraction disappears, and the iron core is released under the action of the counterforce spring to restore the contact. In practical application, many electrical appliances often need to be interlocked, and under the requirement, the multi-stage contactor is generated.
The mechanical interlocking mechanism between the existing three-pole contactor and four-pole contactor comprises a mechanical interlocking mechanism and a fixing device connected with a contactor body, so that the product structure is complex, the operation is inconvenient, and the manufacturing and assembling cost is high.
In view of the above, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a mechanical interlocking structure and a multi-stage contactor, which are used for solving the problems of complex structure and inconvenient operation of an interlocking mechanism in the prior art.
In order to achieve the purpose, the invention adopts the following technical means:
a mechanical interlocking structure comprises an interlocking piece and a locking piece arranged on the interlocking piece, wherein an avoiding hole is formed in the middle of the interlocking piece, and the locking piece comprises an elastic arm and an interlocking head arranged at one end of the elastic arm;
one end of the elastic arm, which is far away from the interlocking head, is fixedly connected to the edge of the avoidance hole, and the elastic arm extends along the avoidance hole; the interlocking heads are provided with a pair of interlocking heads which are respectively arranged towards one side of the interlocking piece in a protruding mode.
As a further improvement, the long edges of the elastic arms are provided with reinforcing pieces, and the reinforcing pieces are formed by protruding the corresponding long edges towards the direction vertical to the plane where the elastic arms are located.
A multi-stage contactor comprises at least two contactors arranged side by side, and a mechanical interlocking structure is fixedly arranged between every two adjacent contactors.
As a further improvement, each contactor comprises an electromagnetic system and a contact assembly, the contact assembly is connected to one end of the electromagnetic system and can move back and forth along a first direction under the action of the electromagnetic system, and the first direction is consistent with the length direction of the elastic arm;
the side edges of each contact assembly are provided with a boss projecting towards the interlocking member, the bosses being adapted to resiliently snap-fit with the interlocking head during movement of the contact assembly back and forth along the first direction.
As a further improvement, each contactor further comprises an insulating body, a mounting cavity penetrating along a first direction is formed in the insulating body, and the electromagnetic system and the contact assembly are mounted in the mounting cavity;
the front end and the rear end of the insulating body are respectively provided with a front cover and a rear plate.
As a further improvement, a gap is arranged between the insulating bodies of the two contactors, and the mechanical interlocking structure is arranged in the gap;
the side wall of the insulating body is provided with an avoiding groove corresponding to the contact component, the boss penetrates through the avoiding groove, and the interlocking head is inserted into the avoiding groove.
As a further improvement, a positioning mechanism is further arranged on the interlocking piece, and the positioning mechanism comprises a first positioning column and a second positioning column which are respectively positioned at the head end and the tail end of the elastic arm;
the first positioning column is arranged in a direction vertical to the plane of the interlocking piece, and the second positioning column is arranged along the length direction of the elastic arm;
two first positioning columns are arranged and are respectively inserted into the avoidance grooves of the two adjacent insulation bodies; the two second positioning columns are respectively inserted on the two adjacent rear plates.
As a further improvement, the positioning mechanism further comprises two symmetrically arranged buckle structures, the two buckle structures are respectively arranged at two sides of the interlocking piece, each buckle structure comprises a clamp arm and a clamping jaw connected to one end of the clamp arm, the other end of the clamp arm is connected to the interlocking piece, and a certain gap is reserved between the clamp arm and the interlocking piece;
each clamping jaw spans two adjacent insulation bodies so that the two insulation bodies are close to each other.
As a further improvement, the end of the boss is arc-shaped, and the interlocking head is triangular.
As a further improvement, the elastic arm and the interlocking head are made of an elastic plastic integrated piece.
Compared with the prior art, the invention has the following technical effects:
the mechanical interlocking structure comprises an interlocking piece and a locking piece, wherein the locking piece comprises an elastic arm and an interlocking head, and the interlocking head is arranged at the end part of the elastic arm and can deviate in a small amplitude along with the swinging of the elastic arm; the interlocking part is fixedly arranged between two adjacent contactors, meanwhile, bosses protruding towards the interlocking part are arranged on the contact assemblies of the two adjacent contactors, and the bosses can be matched with elastic lock catches of the interlocking heads in the process that the contact assemblies move back and forth, so that the interlocking function between the multi-stage contactors can be realized; compared with the structural design that an additional fixing device is needed to fix the interlocking piece on the contactor body in the prior art, the mechanical interlocking structure has the advantages of simpler structure and more convenient assembly, and the interlocking action is simple and stable, so that the safety and reliability of circuit control are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a perspective view illustrating a multi-stage contactor according to a preferred embodiment of the present invention;
FIG. 2 shows a front view of the multi-stage contactor of FIG. 1;
fig. 3 shows an exploded perspective view of the multi-stage contactor of fig. 1;
FIG. 4 shows a perspective view of the mechanical interlock structure of the present invention;
fig. 5 shows a cross-sectional view of the multi-stage contactor of fig. 1;
FIG. 6 shows a partial enlarged view at A in FIG. 5;
figure 7 shows a schematic view of the assembly of the interlock piece and the contact assembly of the present invention.
Description of the main element symbols:
multi-stage contactor-100; a contactor-101; an insulator body-10; a mounting cavity-11; avoidance groove-12; -an electromagnetic system-20; a contact assembly-30; a boss-31; a front cover-40; a back plate-50; an interlock-61; avoidance holes-611; a locking piece-62; a resilient arm-621; an interlock-622; a reinforcing tab-623; a first positioning post-71; a second positioning post-72; a snap-fit structure-73; clamp arm-731; a pawl-732.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "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 the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1 and 2, the present embodiment discloses a multi-stage contactor 100 including a mechanical interlocking structure, and specifically, the multi-stage contactor 100 has two poles, that is, two contactors 101 are arranged side by side to form a two-pole contactor.
Referring to fig. 3, in the present embodiment, each contactor 101 includes an insulating body 10, an electromagnetic system 20, a contact assembly 30, a front cover 40 and a back plate 50. The two contactors 101 are arranged side by side with a mechanical interlock between them.
Specifically, the insulating body 10 is provided therein with a through-going mounting cavity 11, the contact assembly 30 and the electromagnetic system 20 are mounted in the mounting cavity 11 in tandem, and the contact assembly 30 is connected to the electromagnetic system 20 and can move back and forth along the front-back direction under the action of the electromagnetic system 20. The interaction between the electromagnetic system 20 and the contact assembly 30 is conventional in the art and will not be described in detail herein.
Referring to fig. 4, the mechanical interlocking structure includes an interlocking member 61 and a locking member 62 disposed thereon, specifically, a main body of the interlocking member 61 is plate-shaped, and a bar-shaped avoiding hole 611 is formed in the middle of the interlocking member 61; the locking member 62 further includes a resilient arm 621 and an interlocking head 622 disposed at one end of the resilient arm 621.
During manufacturing, one end of the elastic arm 621, which is far away from the interlocking head 622, is fixedly connected to the edge of the avoiding hole 611, specifically, to the rear edge thereof; the resilient arms 621 and the interlocking head 622 extend along the length of the relief hole 611. The interlocking heads 622 are provided in a pair, and protrude toward one side of the interlocking member 61, that is, the protruding direction is perpendicular to the plane of the interlocking member 61.
Referring to fig. 4 and 7, in a preferred embodiment, the long side of the elastic arm 621 is provided with a reinforcing tab 623, and the reinforcing tab 623 is formed by protruding the corresponding long side of the elastic arm 621 toward a direction perpendicular to the plane of the elastic arm 621.
In the present embodiment, the contact assembly 30 also has a plate-shaped main structure, and the side of the contact assembly 30 is provided with a boss 31 protruding toward the interlocking member 61, and the boss 31 is used for elastically snap-fitting with the interlocking head 622 on the side during the back and forth movement of the contact assembly 30 along the front and back directions.
In order to make the boss 31 and the interlocking head 622 fit smoothly, the end face of the boss 31 is arc-shaped, and the interlocking head 622 is triangular (as shown in fig. 5 and 6).
Referring to fig. 1 and fig. 6, in one embodiment, the contact assembly 30 is provided with a relief groove 12 on opposite sidewalls of two adjacent insulation bodies 10, a front end of the relief groove 12 penetrates through a front edge of the insulation body 10, and a rear end extends to a middle portion of the insulation body 10. Interlocking heads 622 disposed on both sides of the elastic arm 621 are inserted into the escape groove 12, and the bosses 31 of the contact assembly 30 are inserted into the escape groove 12, and the bosses 31 pass therebetween in accordance with the movement of the contact assembly 30.
Therefore, when the boss 31 of one of the contact assemblies 30 is snap-fitted with the interlocking head 622 on the side, the elastic arm 621 swings in the opposite direction to enable the boss 31 to be smoothly snap-fitted. Similarly, when the boss 31 of the other contact assembly 30 is in snap-fit engagement with the interlocking head 622 on the side, the resilient arm 621 swings toward the other side. The avoiding groove 12 formed in the insulating body 10 leaves a sufficient movement space for the elastic arm 621, so that the locking operation can be smoothly performed. It should be noted that the width W of the two interlocking heads 622 in the left-right direction is greater than the distance D between the two bosses 31 and smaller than the distance H between the opposite edges of the two contact assemblies 30 (as shown in fig. 6), so that the two contact assemblies 30 cannot be latched simultaneously, but only one contact assembly is latched, which meets the requirement of the interlocking function of the multi-stage contactor 100.
The interlocking member 61 of the present embodiment is directly and fixedly installed between the two contactors 101, and specifically, the interlocking member 61 is fixedly installed in the gap between the two insulating bodies 10 by a positioning mechanism.
Referring to fig. 4, fig. 5 and fig. 6, in one embodiment, the positioning mechanism includes a first positioning post 71 and a second positioning post 72 respectively located at the head and the tail ends of the elastic arm 621; the first positioning post 71 is arranged in a direction perpendicular to the plane of the interlocking member 61, and the second positioning post 72 is arranged along the length direction of the elastic arm 621; therefore, the two positioning posts can accurately position the interlocking piece 61 between the insulating bodies 10.
Referring to fig. 7, more specifically, two first positioning posts 71 are provided, protruding from two side surfaces of the interlocking member 61, and inserted into the avoiding grooves 12 of two adjacent insulating bodies 10 during assembly; the two second positioning posts 72 are respectively protruded from the rear edge of the interlocking member 61 and respectively inserted on the rear plates 50 of the adjacent two contacts 101 during assembly. Further, the front cover 40 blocks the front end of the first positioning post 71 to prevent the interlocking member 61 from moving forward. By this, the position of the interlocking member 61 in the gap is accurately positioned, and the interlocking member 61 is prevented from loosening to cause the malfunction of the contactor 101.
Referring to fig. 4, as a preferred embodiment, the positioning mechanism further includes two symmetrically disposed buckling structures 73, the two buckling structures 73 are disposed on two sides of the interlocking member 61, each buckling structure 73 includes a clamping arm 731 and a claw 732 connected to one end of the clamping arm 731, the other end of the clamping arm 731 is connected to the interlocking member 61, and a certain gap is reserved between the clamping arm 731 and the interlocking member 61; when assembling, each clamping jaw 732 spans two adjacent insulation bodies 10, so that the two insulation bodies 10 are close to each other, and the structural design not only can enhance the stability of the position of the interlocking piece 61, but also can enhance the structural stability of the whole two-pole contactor to a certain extent.
In summary, the mechanical interlocking structure of the present invention includes an interlocking member 61 and a locking member 62, wherein the locking member 62 includes an elastic arm 621 and an interlocking head 622, and the interlocking head 622 is disposed at an end of the elastic arm 621 and can make a small deviation along with the swinging of the elastic arm 621; the interlocking piece 61 is fixedly arranged between two adjacent contactors 101, meanwhile, the contact assemblies 30 of two adjacent contactors 101 are respectively provided with a boss 31 protruding towards the interlocking piece 61, and the bosses 31 can be matched with the interlocking heads 622 in an elastic locking manner in the process that the contact assemblies 30 move back and forth, so that the interlocking function of the multistage contactor 100 can be realized; compared with the structural design that an additional fixing device is needed to fix the interlocking piece 61 on the contactor 101 body in the prior art, the mechanical interlocking structure has the advantages of simpler structure and more convenient assembly, and the interlocking action is simple and stable, so that the safety and the reliability of circuit control are ensured.
It should be noted that the above embodiment merely exemplifies the case of the two-pole contactor 101, and according to the purpose of the present invention, the mechanical interlock structure of the present invention can be applied to three-stage, four-stage and above contactors 101, and the effects of the present invention, such as simple structure, convenient assembly, and stable and reliable interlock operation, can be achieved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A mechanical interlocking structure is characterized by comprising an interlocking piece and a locking piece arranged on the interlocking piece, wherein an avoiding hole is formed in the middle of the interlocking piece, and the locking piece comprises an elastic arm and an interlocking head arranged at one end of the elastic arm;
one end of the elastic arm, which is far away from the interlocking head, is fixedly connected to the edge of the avoidance hole, and the elastic arm extends along the avoidance hole; the interlocking heads are provided with a pair of interlocking heads which are respectively arranged towards one side of the interlocking piece in a protruding mode.
2. The mechanical interlock of claim 1, wherein said spring arms are provided with reinforcing tabs on their long sides, said reinforcing tabs being formed by corresponding long sides projecting in a direction perpendicular to the plane of said spring arms.
3. A multi-stage contactor comprising at least two contactors arranged side by side, wherein a mechanical interlock structure according to any one of claims 1-2 is fixedly mounted between two adjacent contactors.
4. The multi-stage contactor as claimed in claim 3, wherein each of said contactors comprises an electromagnetic system and a contact assembly connected to one end of said electromagnetic system and movable back and forth in a first direction under the action of said electromagnetic system, said first direction being coincident with the length direction of said spring arm;
the side edges of each contact assembly are provided with a boss projecting towards the interlocking member, the bosses being adapted to resiliently snap-fit with the interlocking head during movement of the contact assembly back and forth along the first direction.
5. The multilevel contactor of claim 4, wherein each of said contactors further comprises an insulating body having a mounting cavity defined therein extending therethrough in a first direction, said electromagnetic system and said contact assembly being mounted within said mounting cavity;
the front end and the rear end of the insulating body are respectively provided with a front cover and a rear plate.
6. The multi-stage contactor as claimed in claim 5, wherein a space is provided between the insulating bodies of two of said contactors, and said mechanical interlocking structure is installed in said space;
the side wall of the insulating body is provided with an avoiding groove corresponding to the contact component, the boss penetrates through the avoiding groove, and the interlocking head is inserted into the avoiding groove.
7. The multi-stage contactor as claimed in claim 6, wherein said interlocking member further comprises a positioning mechanism, said positioning mechanism comprising a first positioning post and a second positioning post respectively located at the head and tail ends of said elastic arm;
the first positioning column is arranged in a direction vertical to the plane of the interlocking piece, and the second positioning column is arranged along the length direction of the elastic arm;
two first positioning columns are arranged and are respectively inserted into the avoidance grooves of the two adjacent insulation bodies; the two second positioning columns are respectively inserted on the two adjacent rear plates.
8. The multi-stage contactor as claimed in claim 6 or 7, wherein said positioning mechanism further comprises two symmetrically arranged snap structures, two of said snap structures are respectively arranged at two sides of said interlocking member, each snap structure comprises a snap arm and a claw connected to one end of said snap arm, the other end of said snap arm is connected to said interlocking member, and a certain gap is reserved between said snap arm and said interlocking member;
each clamping jaw spans two adjacent insulation bodies so that the two insulation bodies are close to each other.
9. The multiple stage contactor as claimed in claim 4, wherein said bosses are arcuate in end and said interlocking heads are triangular in shape.
10. The multi-stage contactor as claimed in claim 3, wherein said resilient arms and said interlocking heads are a single piece of resilient plastic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110254939.0A CN112837953B (en) | 2021-03-09 | 2021-03-09 | Mechanical interlocking structure and multistage contactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110254939.0A CN112837953B (en) | 2021-03-09 | 2021-03-09 | Mechanical interlocking structure and multistage contactor |
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| CN112837953B CN112837953B (en) | 2024-09-24 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192776A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | Mechanical interlocking device of isolating switch and circuit breaker |
| CN215118699U (en) * | 2021-03-09 | 2021-12-10 | 浙江和诚智能电气有限公司 | Mechanical interlocking structure and multi-stage contactor |
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- 2021-03-09 CN CN202110254939.0A patent/CN112837953B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192776A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | Mechanical interlocking device of isolating switch and circuit breaker |
| CN215118699U (en) * | 2021-03-09 | 2021-12-10 | 浙江和诚智能电气有限公司 | Mechanical interlocking structure and multi-stage contactor |
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