Contactor and main contact interlocking installation structure thereof

Abstract

The utility model relates to a contactor and a main contact interlocking installation structure thereof. The contactor comprises a support and a main contact mechanism, the main contact mechanism comprises a shell, a static contact and a moving contact, the static contact and the moving contact are mounted in the shell, the support is provided with joint parts which are arranged in groups, each joint part is provided with a bayonet, the main contact mechanism further comprises buckles which are formed in the shell in groups, and the buckles are connected with the static contact and the moving contact. Each buckle is provided with a first clamping plate and a baffle connected to the first clamping plate at an angle. And each group of buckles can be embedded into the bayonets of the corresponding group of joint parts by moving the first clamping plates of the buckles in the first direction together, and can be in stopping fit with the peripheries of the bayonets in the second direction forming an angle with the first direction by the baffles of the buckles and the peripheries of the bayonets.

Description

Technical Field

[0001] The utility model relates to a switch electrical appliance, in particular to a contactor and a main contact interlocking installation structure thereof. Background Art

[0002] A contactor is a widely used switching device that utilizes electromagnetic, pneumatic, or hydraulic principles to control the main circuit through a control circuit. Advantages include strong current-cutting capability, rapid operation, safe operation, frequent operation, and remote control. Contactors can control a variety of electrical loads, such as electric motors. A contactor typically comprises a main contact assembly, a drive mechanism that drives the moving contact of the main contact assembly into engagement with the stationary contact, and a biasing mechanism that biases the moving contact away from the stationary contact.

[0003] In traditional contactors, holes are pre-drilled in the current-carrying components of the main contact unit. During installation, the main contact unit is secured to the housing using bolts and nuts inserted through these holes. This design can damage the current-carrying components, causing abnormal heating when current flows through areas with smaller conductor cross-sectional areas. Furthermore, the use of bolts and nuts increases material costs and assembly labor.

[0004] Therefore, there is a certain demand in the industry for improving the main contact mounting structure of the contactor to simplify the installation process and improve the performance of the contactor. Utility Model Content

[0005] The utility model aims to provide a main contact interlocking installation structure, which can at least solve some of the above technical problems.

[0006] The utility model also aims to provide a contactor using the above improved main contact interlocking installation structure.

[0007] According to one aspect of the present invention, a main contact interlocking mounting structure of a contactor is provided, wherein the contactor includes a support and a main contact mechanism, the main contact mechanism includes a housing, a static contact and a moving contact installed in the housing, the support has joints arranged in groups, wherein each joint has a bayonet, and the main contact mechanism also includes a group of clips formed on the housing, each clip having a first clip and a baffle connected to the first clip at an angle; wherein each group of clips is configured to be able to move together along a first direction with the first clip contained therein to embed into the bayonet of the corresponding group of joints, and to form a stop fit with the baffle contained therein and the periphery of the bayonet along a second direction at an angle to the first direction.

[0008] According to this solution, a symmetrical interlocking structure is designed between the main contact mechanism's housing and the support that supports it, allowing the main contact mechanism to be removably mounted to the housing in a simple manner. This design does not damage the main contact mechanism's current-carrying components, effectively preventing abnormal heating of the conductors. Furthermore, the simple connection structure between the main contact mechanism and the housing effectively saves material costs and simplifies assembly work, facilitating automated production.

[0009] In some embodiments, the support has a plurality of openings separated by partitions, and each engaging portion is formed in a corresponding opening.

[0010] In some embodiments, in the opening, an escape opening is formed between the engaging portion and the peripheral surface of the opening for the buckle to pass through along the second direction, and the escape opening is communicated with the snap-on opening of the engaging portion.

[0011] In some embodiments, each engaging portion includes two relatively arranged protrusions, the surfaces of the two protrusions facing each other define a gap serving as at least a portion of the bayonet, and the protrusions form a stop fit with the corresponding baffle of the buckle in the second direction.

[0012] In some embodiments, the joint includes a limit plate extending from the protrusion along a second direction opposite to the first direction, the spacing between two relative limit plates in the joint is greater than the spacing between the two protrusions, and at least a portion of the buckle is embedded between the two relative limit plates.

[0013] In some embodiments, the buckle includes a second clamping plate arranged crosswise with the first clamping plate, and the second clamping plate is embedded between the two opposite limiting plates.

[0014] In some embodiments, the second clamping plate is formed with outwardly convex arc surfaces at two opposite ends, and the two limiting plates each have an arc-shaped groove adapted to accommodate the arc surface.

[0015] In some embodiments, the side surface of the limiting plate facing the peripheral surface of the opening is configured as an inclined surface, and the distance between the inclined surface and the peripheral surface of the opening gradually increases in a direction approaching the center of the joint portion.

[0016] In some embodiments, the housing includes two half shells connected together, wherein each half shell is formed with a snap-fit portion, and the snap-fit portions of the two half shells have the same structure and are combined together to construct a complete snap-fit.

[0017] According to another aspect of the present invention, a contactor is provided, comprising a base and a main contact mechanism, a drive mechanism and a control circuit mounted on the base, wherein the aforementioned main contact interlocking mounting structure is provided between the main contact mechanism and the base, and wherein at least a portion of the base is configured as the support.

[0018] Some of the other features and advantages of the present invention will be apparent to those skilled in the art after reading this application, and the other parts will be described in the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the main contact mechanism and the support assembled together according to an embodiment of the present utility model;

[0021] Figure 2 is a three-dimensional schematic diagram of a support according to an embodiment of the present utility model;

[0022] Figure 3 is a front view of a support according to an embodiment of the present utility model;

[0023] Figure 4 yes Figure 3 A magnified view of point A;

[0024] Figure 5 is a schematic diagram of a main contact mechanism according to an embodiment of the present utility model;

[0025] Figure 6 yes Figure 5 Enlarged view of point B.

[0026] Description of reference numerals:

[0027] 1-support; 2-opening; 3-mounting hole; 4-joint; 4A-first joint; 4B-

[0028] Second joint; 41-protrusion; 42-limiting plate; 43-stop surface; 44-arc groove; 4

[0029] 5- inclined surface; 46- bayonet; 6- opening; 7- partition; 5- main contact mechanism; 51- housing; 5

[0030] 11-opening; 512-half shell; 52-static contact; 53-contact support; 54-clip; 54A-

[0031] A buckle; 54B-second buckle; 541-first card plate; 542-second card plate; 543

[0032] -Curved surface; 544-Baffle DETAILED DESCRIPTION

[0033] With reference to the accompanying drawings, schematic diagrams of the contactor and its main contact interlocking mounting structure disclosed in the present invention are described in detail. Although the drawings are provided to illustrate some embodiments of the present invention, they are not necessarily drawn to the dimensions of the specific embodiments, and certain features may be enlarged, removed, or partially cut away to better illustrate and explain the disclosure of the present invention. Some components in the drawings may be repositioned as needed without affecting the technical effect. The phrase "in the drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0034] Certain directional terms used in the following description of the drawings, such as "inner," "outer," "above," "below," and other directional terms, should be understood to have their normal meanings and refer to those directions when the drawings are normally viewed. Unless otherwise indicated, the directional terms used in this specification are generally in accordance with conventional directions understood by those skilled in the art.

[0035] The terms "first", "first", "second", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0036] A contactor may include a base and functional components mounted on the base, including a main contact mechanism, a drive mechanism, a biasing mechanism, and a control circuit. The main contact mechanism may consist of multiple main contact assemblies, which may be arranged side by side and fixed to the base. Individual main contact assemblies may be modular in design, allowing for easy interchangeability and simplifying contactor installation and maintenance.

[0037] The contactor base can be a split-body structure, for example, consisting of multiple detachable supports, upon which the functional components of the contactor can be mounted. The supports can be designed with different configurations based on the functional components they support. The multiple supports of the base can be assembled together using any suitable method, including but not limited to snaps, bolts, etc.

[0038] Alternatively, the base of the contactor may be integral and have a plurality of cavities formed therein to mount various functional components. In this case, the base may be considered to be formed by a large support.

[0039] Figure 1 One of the supports 1 of the split base is shown, which is detachably connected to the main contact mechanism 5 by means of an interlocking structure. This interlocking structure simplifies the assembly process of the main contact mechanism and the base and is easy to process.

[0040] Figures 2 to 4 The structure of the support 1 is shown as an example. As shown in the figure, the support 1 is an integrally formed part with an overall frame-like configuration. It can be connected to other supports through mounting holes 3 using bolts or positioning pins. The support 1 has multiple openings 2 arranged side by side in the horizontal direction in the center to accommodate the contact supports 53 of the main contact mechanism 5 (shown in FIG. Figure 5 The number of openings 2 corresponds one-to-one with the number of main contact mechanisms 5, shown here as three. Also corresponding one-to-one with the main contact mechanisms 5 are the sets of joints formed on the support 1 for securing the main contact mechanisms 5. In other words, each main contact mechanism 5 is secured to the support 1 via a set of joints 4.

[0041] like Figure 1 and Figure 3 As shown, vertically, another opening 6 is formed on the opposite sides of each opening 2, and a joint 4 is formed in each opening 6. Laterally, two adjacent openings 6 are separated by a partition 7. A group of joints is composed of the joint 4 on one vertical side of each opening 2 (i.e., the first joint 4A) and the joint 4 on the other vertical side of the opening 2 (i.e., the second joint 4B), to correspondingly install a main contact mechanism 5. In other words, the opening 2 and the joints 4 on both sides of the vertical opposite sides together form an assembly structure for installing a main contact mechanism 5. Considering that the structure of each joint 4 and the orientation in the corresponding opening 6 are consistent, only the joints 4 are shown here. Figure 3 The joint portion 4 defined by the circle at A is taken as an example for detailed description.

[0042] like Figure 4 As shown, in each opening 6, the two protrusions 41 of the joint 4 are arranged relative to each other. The space between the surfaces of the two protrusions 41 facing each other has a certain volume, thereby constructing a configuration similar to a channel. In the embodiment shown, the protrusions 41 are respectively engaged with the two adjacent peripheral surfaces of the opening 6 with adjacent two sides. In other embodiments, the arrangement of the protrusions can be changed, for example, only one side is engaged with one peripheral surface of the opening 6, while the other side is separated from the peripheral surface of the opening 6. In any case, as long as a space is maintained between the two protrusions 41.

[0043] The two protrusions 41 of the joint 4 in each opening 6 are arranged opposite each other, with a limit plate 42 formed on each protrusion 41. The limit plates 42 extend from the protrusions 41 and in a direction away from the space between the protrusions. The two limit plates 42 of the joint 4 in the opening 6 are also arranged opposite each other, with a space formed between the two limit plates 42. The space between the limit plates 42 is connected to the space between the protrusions 41, and the lateral dimension of the space between the limit plates 42 is greater than the lateral dimension of the space between the protrusions 41. As a result, the two opposing limit plates 42 and the two opposing protrusions 41 jointly define a slot 46 that allows the mounting structure of the main contact mechanism 5 to be snapped into place. The limit plates 42 are respectively engaged with the protrusions and the circumference of the opening 6 on adjacent sides. In other embodiments, the arrangement of the limit plates can be modified, for example, so that they only engage with the protrusions 41 and are separated from the circumference of the opening. Alternatively, the limit plates can be engaged only with the circumference of the opening and separated from the protrusions 41.

[0044] A sloped surface 45 is constructed at the top of the limiting plate 41. This sloped surface 45 faces the top circumferential surface of the opening 6, and the distance between this sloped surface and the top circumferential surface gradually increases as it approaches the center of the joint 4. Thus, a clearance opening is defined between the limiting plate 41 and the circumferential surface of the opening 6, allowing the mounting structure of the main contact mechanism 5 to pass through. The clearance opening is connected to the bayonet 46, so that the mounting structure of the main contact mechanism 5 can pass through the clearance opening in one direction and then snap into the bayonet 46 in another angled direction. The sloped surfaces 45 of the two opposing limiting plates 41 in the joint 4 also jointly limit and guide the movement path of the main contact mechanism 5 when passing through the clearance opening.

[0045] refer to Figure 2 One side surface of the limit plate 41 is flush with the same side surface of the protrusion 41, thereby constructing an entire flat surface. This side surface of the protrusion 41 is also a stop surface 43 that can form a stop fit with the mounting structure of the main contact mechanism 5.

[0046] As described above, an interlocking connection is formed between the main contact mechanism 5 and the support 1. In order to adapt to the bayonet 46 of the joint portion 4 of the support 1, the main contact mechanism 5 forms a buckle structure 54.

[0047] Figure 5 The main contact mechanism 5 is shown as an example. As shown, a single main contact mechanism 5 can integrate multiple functional components within a housing 51, such as a static contact, a moving contact mechanism, and an arc extinguishing mechanism. The housing 51 can be a two-piece structure formed by two half-shells 512. The two half-shells 512 can be joined together by bolts or snaps to form the internal storage space of the housing 51. The two half-shells 512 can be structurally identical. The housing 51 not only provides protection and support for the other functional components installed within, but also provides better phase-to-phase insulation for the main circuit.

[0048] One end of the static contact 52 is fixed within the housing 51 and is provided with a static contact point, while the other end of the static contact 52 extends from the housing 51, with the extended end configured as a terminal. The two static contacts 52 can be arranged opposite each other in the housing 51, with the ends of the two static contacts 52 that are closer to each other being fixed within the housing 51 and provided with a static contact point, while the ends of the two static contacts 52 that are farther away from each other extend from the upper and lower sides of the housing 51, respectively, and configured as terminals.

[0049] The moving contact mechanism is movably mounted in the housing 51 and can move relative to the housing 51 and the static contact 52. The moving contact mechanism mainly includes a contact support 53 and a moving contact (not shown in the figure), wherein the moving contact is mounted on the contact support 53, and the contact support 53 can move perpendicular to the extension direction of the static contact 52. A portion of the contact support 53 is located in the housing 51 to support the moving contact, and one end of the contact support 53 extends from the opening 511 of the housing 51 for operation by the drive mechanism. To this end, the protruding end of the contact support 53 can be formed with a coupling structure for engaging the drive mechanism. The moving contact is fixedly mounted on the contact support 53 and can move with the contact support 53. The moving contact can extend in the same direction as the static contact 52, and is adapted to the two static contacts 52, and two symmetrical moving contacts can extend from the top and bottom of the contact support 53. When the contact support 53 moves in the front-to-back direction of the housing 51 , it can drive the moving contact to approach and engage with the static contact 52 , or separate from the static contact 52 , thereby closing or opening the main circuit of the contactor.

[0050] The mounting structure for locking the main contact mechanism 5 into the bayonet 46 of the support 1 is constructed as a buckle 54. Figure 6 As shown, the clip 54 is mounted on the outer surface of the housing 51, closer to the stationary contact 52 than to the moving contact. The clip 54 includes a first clip 541 and a second clip 542 that are cross-connected, with the first clip 541 arranged vertically and the second clip 542 arranged horizontally. A baffle 544 is connected to the ends of the first and second clips 541, 542 that are away from the housing 51. The baffle 544 is perpendicular to the first and second clips 541, 542, and spaced apart from the housing 51.

[0051] For each main contact mechanism 5, a group or a pair of buckles 54 with the same structure are arranged on the housing 51, and they are respectively located on the opposite sides of the contact support 53. Figure 5For example, the snap 54 on one side of the contact support 53 (i.e., the first snap 54A) and the snap 54 on the other side of the contact support 53 (i.e., the second snap 54B) constitute a set of snaps, which are adapted to the set of engagement portions 4 of the support 1. In the case where the housing 51 is composed of two half shells 512, each half shell 512 can be formed with a portion of the snap. When the two half shells 512 are combined, their respective snap portions are also combined to construct a complete snap 54.

[0052] The following is a detailed description of the process of interlocking the support 1 and the main contact mechanism 5 using the solution of the present invention.

[0053] First, align the set of clips 54 of the main contact mechanism 5 with the set of joints 4 of the support 1, and then insert each clip 54 through the corresponding escape opening of the joint 4. With the side of the joint 4 where the retaining plate 42 aligns with the surface of the protrusion 41 being the front side, and the opposite side being the rear side, the clip 54 passes through the escape opening of the joint 4 from the rear side to the front side. After extending the retaining plate 544 of the clip 54 out of the escape opening, the clip 54 can be dropped into the retaining opening 46 of the joint 4. The first retaining plate 541 of the clip 54 is inserted into the gap between the two protrusions 41 of the joint 4, while the second retaining plate 542 of the clip 54 is embedded in the gap between the two retaining plates 42 of the joint 4. The second retaining plate 542 is supported by the step formed between the retaining plate 42 and the protrusion 41. At this point, the retaining plate 544 forms a stopper with the stopper 43 of the protrusion 41, preventing the clip 54 from slipping out of the retaining opening 46 in the front-to-back direction. Thereby, the main contact mechanism 5 and the support 1 form an interlocking connection by means of the snap hook 54 and the bayonet hole 46 .

[0054] For better fit, outwardly convex arcuate surfaces 543 may be formed on opposite ends of the second clamping plate 542 of the buckle 54, and corresponding arcuate grooves 44 may be formed on the limiting plate 42 of the joint portion 4. The second clamping plate 542 may be embedded in the gap between the two opposing limiting plates 42, with the arcuate surfaces 543 embedded in the corresponding arcuate grooves 44.

[0055] When the main contact mechanism 5 is mounted on the support 1, a group of clips 54 are synchronously passed through the corresponding avoidance openings in the corresponding group of joints 4 in the same direction (for example, from back to front in the horizontal direction) and are simultaneously inserted into the corresponding clip openings 46 in another direction (for example, from top to bottom in the vertical direction). This installation method is simple and easy to operate and can realize the automation of the assembly process.

[0056] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0057] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A main contact interlocking installation structure of a contactor, wherein: The contactor comprises a support (1) and a main contact mechanism (5), wherein the main contact mechanism (5) comprises a housing (51), a static contact (52) and a moving contact installed in the housing (51), and is characterized in that the support (1) has joints (4) arranged in groups, wherein each joint (4) has a bayonet (46), and the main contact mechanism (5) further comprises a group of buckles (54) formed on the housing (51), each buckle (54) has a first clamping plate (541) and a baffle (544) connected to the first clamping plate (541) at an angle; Each group of buckles (54) is configured to move together with the first clamping plate (541) contained therein along a first direction to be embedded in the bayonet (46) of the corresponding group of joints (4), and to form a stop fit with the bayonet (46) around the bayonet (46) along a second direction that is angled with the first direction with the baffle (544) contained therein.

2. The main contact interlocking installation structure according to claim 1, characterized in that: The support (1) has a plurality of openings (6) separated by partitions (7), and each engaging portion (4) is formed in a corresponding opening (6).

3. The main contact interlocking installation structure according to claim 2, characterized in that: In the opening (6), a relief opening for the buckle (54) to pass through along the second direction is formed between the joint (4) and the peripheral surface of the opening (6), and the relief opening is communicated with the snap opening (46) of the joint (4).

4. The main contact interlocking installation structure according to claim 2 or 3, characterized in that: Each joint portion (4) comprises two protrusions (41) arranged opposite to each other, wherein surfaces of the two protrusions (41) facing each other define a gap serving as at least a portion of the bayonet (46), and the protrusions (41) form a stop fit with the baffle (544) of the corresponding buckle (54) in the second direction.

5. The main contact interlocking installation structure according to claim 4, characterized in that: The joint portion (4) comprises a limiting plate (42) extending from the protrusion (41) along a second direction opposite to the first direction, the interval between two opposing limiting plates (42) in the joint portion (4) is greater than the interval between the two protrusions (41), and at least a portion of the buckle (54) is embedded between the two opposing limiting plates (42).

6. The main contact interlocking installation structure according to claim 5, characterized in that: The buckle (54) comprises a second clamping plate (542) arranged crosswise with the first clamping plate (541), and the second clamping plate (542) is embedded between the two opposing limiting plates (42).

7. The main contact interlocking installation structure according to claim 6, characterized in that: The second clamping plate (542) is formed with outwardly convex arc surfaces (543) at two opposite ends, and the two limiting plates (42) each have an arc-shaped groove (44) adapted to accommodate the arc surface (543).

8. The main contact interlocking installation structure according to claim 5, characterized in that: The side surface of the limiting plate (42) facing the peripheral surface of the opening (6) is configured as an inclined surface (45), and the distance between the inclined surface (45) and the peripheral surface of the opening (6) gradually increases in a direction approaching the center of the joint (4).

9. The main contact interlocking installation structure according to claim 1, characterized in that: The housing (51) comprises two half shells (512) connected together, wherein each half shell (512) is formed with a buckle portion, and the buckle portions of the two half shells (512) have the same structure and are combined together to construct a complete buckle (54).

10. A contactor comprising a base and a main contact mechanism (5), a drive mechanism and a control circuit mounted on the base, characterized in that: A main contact interlocking mounting structure according to any one of claims 1 to 9 is provided between the main contact mechanism (5) and the base, wherein at least a portion of the base is configured as the support (1).

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